[Title 40 CFR ]
[Code of Federal Regulations (annual edition) - July 1, 1999 Edition]
[From the U.S. Government Printing Office]


          40



          Protection of Environment



[[Page 1]]

          PART 63 (Secs. 63.1200--End)

                         Revised as of July 1, 1999

          CONTAINING
          A CODIFICATION OF DOCUMENTS
          OF GENERAL APPLICABILITY
          AND FUTURE EFFECT

          AS OF JULY 1, 1999
          With Ancillaries
          Published by
          the Office of the Federal Register
          National Archives and Records
          Administration

          as a Special Edition of
          the Federal Register

[[Page ii]]

                                      

               ----------------------------------------------------------
               As of July 1, 1999
               Title 40, Parts 63
               Revised as of July 1, 1998
               Is Replaced by Two Volumes
               Title 40, Part 63, (Secs. 63.1-63.1199)
               and
               Title 40, Parts 63, (Sec. 63.1200-End
                                      
               ----------------------------------------------------------


                     U.S. GOVERNMENT PRINTING OFFICE
                            WASHINGTON : 1999



               For sale by U.S. Government Printing Office
 Superintendent of Documents, Mail Stop: SSOP, Washington, DC 20402-9328

[[Page iii]]




                            Table of Contents



                                                                    Page
  Explanation.................................................       v

  Title 40:
          Chapter I--Environmental Protection Agency 
          (Continued)                                                3
  Finding Aids:
    Material Approved for Incorporation by Reference..........     701
    Table of CFR Titles and Chapters..........................     703
    Alphabetical List of Agencies Appearing in the CFR........     721
    List of CFR Sections Affected.............................     731

[[Page iv]]


      


                     ----------------------------

                     Cite this Code:  CFR
                     To cite the regulations in 
                       this volume use title, 
                       part and section number. 
                       Thus,  40 CFR 63.1211 
                       refers to title 40, part 
                       63, section 1211.

                     ----------------------------

[[Page v]]



                               EXPLANATION

    The Code of Federal Regulations is a codification of the general and 
permanent rules published in the Federal Register by the Executive 
departments and agencies of the Federal Government. The Code is divided 
into 50 titles which represent broad areas subject to Federal 
regulation. Each title is divided into chapters which usually bear the 
name of the issuing agency. Each chapter is further subdivided into 
parts covering specific regulatory areas.
    Each volume of the Code is revised at least once each calendar year 
and issued on a quarterly basis approximately as follows:

Title 1 through Title 16.................................as of January 1
Title 17 through Title 27..................................as of April 1
Title 28 through Title 41...................................as of July 1
Title 42 through Title 50................................as of October 1

    The appropriate revision date is printed on the cover of each 
volume.

LEGAL STATUS

    The contents of the Federal Register are required to be judicially 
noticed (44 U.S.C. 1507). The Code of Federal Regulations is prima facie 
evidence of the text of the original documents (44 U.S.C. 1510).

HOW TO USE THE CODE OF FEDERAL REGULATIONS

    The Code of Federal Regulations is kept up to date by the individual 
issues of the Federal Register. These two publications must be used 
together to determine the latest version of any given rule.
    To determine whether a Code volume has been amended since its 
revision date (in this case, July 1, 1999), consult the ``List of CFR 
Sections Affected (LSA),'' which is issued monthly, and the ``Cumulative 
List of Parts Affected,'' which appears in the Reader Aids section of 
the daily Federal Register. These two lists will identify the Federal 
Register page number of the latest amendment of any given rule.

EFFECTIVE AND EXPIRATION DATES

    Each volume of the Code contains amendments published in the Federal 
Register since the last revision of that volume of the Code. Source 
citations for the regulations are referred to by volume number and page 
number of the Federal Register and date of publication. Publication 
dates and effective dates are usually not the same and care must be 
exercised by the user in determining the actual effective date. In 
instances where the effective date is beyond the cut-off date for the 
Code a note has been inserted to reflect the future effective date. In 
those instances where a regulation published in the Federal Register 
states a date certain for expiration, an appropriate note will be 
inserted following the text.

OMB CONTROL NUMBERS

    The Paperwork Reduction Act of 1980 (Pub. L. 96-511) requires 
Federal agencies to display an OMB control number with their information 
collection request.

[[Page vi]]

Many agencies have begun publishing numerous OMB control numbers as 
amendments to existing regulations in the CFR. These OMB numbers are 
placed as close as possible to the applicable recordkeeping or reporting 
requirements.

OBSOLETE PROVISIONS

    Provisions that become obsolete before the revision date stated on 
the cover of each volume are not carried. Code users may find the text 
of provisions in effect on a given date in the past by using the 
appropriate numerical list of sections affected. For the period before 
January 1, 1986, consult either the List of CFR Sections Affected, 1949-
1963, 1964-1972, or 1973-1985, published in seven separate volumes. For 
the period beginning January 1, 1986, a ``List of CFR Sections 
Affected'' is published at the end of each CFR volume.

INCORPORATION BY REFERENCE

    What is incorporation by reference? Incorporation by reference was 
established by statute and allows Federal agencies to meet the 
requirement to publish regulations in the Federal Register by referring 
to materials already published elsewhere. For an incorporation to be 
valid, the Director of the Federal Register must approve it. The legal 
effect of incorporation by reference is that the material is treated as 
if it were published in full in the Federal Register (5 U.S.C. 552(a)). 
This material, like any other properly issued regulation, has the force 
of law.
    What is a proper incorporation by reference? The Director of the 
Federal Register will approve an incorporation by reference only when 
the requirements of 1 CFR part 51 are met. Some of the elements on which 
approval is based are:
    (a) The incorporation will substantially reduce the volume of 
material published in the Federal Register.
    (b) The matter incorporated is in fact available to the extent 
necessary to afford fairness and uniformity in the administrative 
process.
    (c) The incorporating document is drafted and submitted for 
publication in accordance with 1 CFR part 51.
    Properly approved incorporations by reference in this volume are 
listed in the Finding Aids at the end of this volume.
    What if the material incorporated by reference cannot be found? If 
you have any problem locating or obtaining a copy of material listed in 
the Finding Aids of this volume as an approved incorporation by 
reference, please contact the agency that issued the regulation 
containing that incorporation. If, after contacting the agency, you find 
the material is not available, please notify the Director of the Federal 
Register, National Archives and Records Administration, Washington DC 
20408, or call (202) 523-4534.

CFR INDEXES AND TABULAR GUIDES

    A subject index to the Code of Federal Regulations is contained in a 
separate volume, revised annually as of January 1, entitled CFR Index 
and Finding Aids. This volume contains the Parallel Table of Statutory 
Authorities and Agency Rules (Table I). A list of CFR titles, chapters, 
and parts and an alphabetical list of agencies publishing in the CFR are 
also included in this volume.
    An index to the text of ``Title 3--The President'' is carried within 
that volume.
    The Federal Register Index is issued monthly in cumulative form. 
This index is based on a consolidation of the ``Contents'' entries in 
the daily Federal Register.
    A List of CFR Sections Affected (LSA) is published monthly, keyed to 
the revision dates of the 50 CFR titles.

[[Page vii]]


REPUBLICATION OF MATERIAL

    There are no restrictions on the republication of material appearing 
in the Code of Federal Regulations.

INQUIRIES

    For a legal interpretation or explanation of any regulation in this 
volume, contact the issuing agency. The issuing agency's name appears at 
the top of odd-numbered pages.
    For inquiries concerning CFR reference assistance, call 202-523-5227 
or write to the Director, Office of the Federal Register, National 
Archives and Records Administration, Washington, DC 20408.

SALES

    The Government Printing Office (GPO) processes all sales and 
distribution of the CFR. For payment by credit card, call 202-512-1800, 
M-F, 8 a.m. to 4 p.m. e.s.t. or fax your order to 202-512-2233, 24 hours 
a day. For payment by check, write to the Superintendent of Documents, 
Attn: New Orders, P.O. Box 371954, Pittsburgh, PA 15250-7954. For GPO 
Customer Service call 202-512-1803.

ELECTRONIC SERVICES

    The full text of the Code of Federal Regulations, The United States 
Government Manual, the Federal Register, Public Laws, Weekly Compilation 
of Presidential Documents and the Privacy Act Compilation are available 
in electronic format at www.access.gpo.gov/nara (``GPO Access''). For 
more information, contact Electronic Information Dissemination Services, 
U.S. Government Printing Office. Phone 202-512-1530, or 888-293-6498 
(toll-free). E-mail, gpoaccess@gpo.gov.
    The Office of the Federal Register also offers a free service on the 
National Archives and Records Administration's (NARA) World Wide Web 
site for public law numbers, Federal Register finding aids, and related 
information. Connect to NARA's web site at www.nara.gov/fedreg. The NARA 
site also contains links to GPO Access.

                              Raymond A. Mosley,
                                    Director,
                          Office of the Federal Register.

July 1, 1999.

[[Page ix]]



                               THIS TITLE

    Title 40--Protection of Environment is composed of twenty-four 
volumes. The parts in these volumes are arranged in the following order: 
parts 1-49, parts 50-51, part 52 (52.01-52.1018), part 52 (52.1019-End), 
parts 53-59, part 60, parts 61-62, part 63 (63.1-63.1199), part 63 
(63.1200-End), parts 64-71, parts 72-80, parts 81-85, part 86, parts 87-
135, parts 136-149, parts 150-189, parts 190-259, parts 260-265, parts 
266-299, parts 300-399, parts 400-424, parts 425-699, parts 700-789, and 
part 790 to End. The contents of these volumes represent all current 
regulations codified under this title of the CFR as of July 1, 1999.

    Chapter I--Environmental Protection Agency appears in all twenty-
four volumes. A Pesticide Tolerance Commodity/Chemical Index appears in 
parts 150-189. A Toxic Substances Chemical--CAS Number Index appears in 
parts 700-789 and part 790 to End. Redesignation Tables appear in the 
volumes containing parts 50-51, parts 150-189, and parts 700-789. 
Regulations issued by the Council on Environmental Quality appear in the 
volume containing part 790 to End. The OMB control numbers for title 40 
appear in Sec. 9.1 of this chapter.

    For this volume, Ruth Reedy Green was Chief Editor. The Code of 
Federal Regulations publication program is under the direction of 
Frances D. McDonald, assisted by Alomha S. Morris.

[[Page x]]




[[Page 1]]



                   TITLE 40--PROTECTION OF ENVIRONMENT




                      (This book contains part 63)

  --------------------------------------------------------------------
                                                                    Part

chapter i--Environmental Protection Agency (Continued)......          63

[[Page 3]]



               CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY




  --------------------------------------------------------------------

                 SUBCHAPTER C--AIR PROGRAMS (CONTINUED)

Part                                                                Page
63              National emission standards for hazardous 
                    air pollutants for source categories....           5


  Editorial Note: Subchapter C--Air Programs is contained in volumes 40 
CFR parts 50-51, part 52 (52.01-52.1018), part 52 (52.1019-end), parts 
53-59, part 60, parts 61-62, part 63 (63.1-63.1199, part 63 (63.1200-
End), parts 64-71, parts 72-80, parts 81-85, part 86, and parts 87-135.

[[Page 5]]



                 SUBCHAPTER C--AIR PROGRAMS (Continued)





PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES--Table of Contents




 Subpart EEE--National Emission Standards for Hazardous Air Pollutants 
                     From Hazardous Waste Combustors

63.1200-63.1210  [Reserved]
63.1211  Notification requirements.
63.1212  Progress reports.
63.1213  Certification.
63.1214  Extension of the compliance date.
63.1215  Sources that become affected sources after the effective date 
          of this subpart.
63.1216  Extension of compliance date to install pollution prevention or 
          waste minimization controls.

Subpart FFF  [Reserved]

 Subpart GGG--National Emission Standards for Pharmaceuticals Production

63.1250  Applicability.
63.1251  Definitions.
63.1252  Standards: General.
63.1253  Standards: Storage tanks.
63.1254  Standards: Process vents.
63.1255  Standards: Equipment leaks.
63.1256  Standards: Wastewater.
63.1257  Test methods and compliance procedures.
63.1258  Monitoring requirements.
63.1259  Recordkeeping requirements.
63.1260  Reporting requirements.
63.1261  Delegation of authority.

Table 1 to Subpart GGG--General Provisions Applicability to Subpart GGG
Table 2 to Subpart GGG--Partially Soluble HAP
Table 3 to Subpart GGG--Soluble HAP
Table 4 to Subpart GGG--Monitoring Requirements for Control Devices
Table 5 to Subpart GGG--Control Requirements for Items of Equipment That 
          Meet the Criteria of Sec. 63.1252(f)
Table 6 to Subpart GGG--Wastewater--Compliance Options for Wastewater 
          Tanks
Table 7 to Subpart GGG--Wastewater--Inspection and Monitoring 
          Requirements for Waste Management Units
Table 8 to Subpart GGG--Fraction Measured (Fm) for HAP 
          Compounds in Wastewater Streams
Table 9 to Subpart GGG--Default Biorates for List 1 Compounds

 Subpart HHH--National Emission Standards for Hazardous Air Pollutants 
          From Natural Gas Transmission and Storage Facilities

63.1270  Applicability and designation of affected source.
63.1271  Definitions.
63.1272  Startups, shutdowns, and malfunctions.
63.1273  [Reserved]
63.1274  General standards.
63.1275  Glycol dehydration unit process vent standards.
63.1276-63.1280  [Reserved]
63.1281  Control equipment requirements.
63.1282  Test methods, compliance procedures, and compliance 
          demonstrations.
63.1283  Inspection and monitoring requirements.
63.1284  Recordkeeping requirements.
63.1285  Reporting requirements.
63.1286  Delegation of authority.
63.1287  Alternative means of emission limitation.
63.1288-63.1289  [Reserved]

Appendix to Subpart HHH--Tables

 Subpart III--National Emission Standards for Hazardous Air Pollutants 
                for Flexible Polyurethane Foam Production

63.1290  Applicability.
63.1291  Compliance schedule.
63.1292  Definitions.
63.1293  Standards for slabstock flexible polyurethane foam production.
63.1294  Standards for slabstock flexible polyurethane foam production--
          diisocyanate emissions.
63.1295  Standards for slabstock flexible polyurethane foam production--
          HAP ABA storage vessels.
63.1296  Standards for slabstock flexible polyurethane foam production--
          HAP ABA equipment leaks.
63.1297  Standards for slabstock flexible polyurethane foam production--
          HAP ABA emissions from the production line.
63.1298  Standards for slabstock flexible polyurethane foam production--
          HAP emissions from equipment cleaning.
63.1299  Standards for slabstock flexible polyurethane foam production--
          source-wide emission limitation.
63.1300  Standards for molded flexible polyurethane foam production.
63.1301  Standards for rebond foam production.
63.1302  Applicability of subpart A requirements.
63.1303  Monitoring requirements.
63.1304  Testing requirements.

[[Page 6]]

63.1305  Alternative means of emission limitation.
63.1306  Reporting requirements.
63.1307  Recordkeeping requirements.
63.1308  Compliance demonstrations.
63.1309  Delegation of authority.

Appendix to Subpart III--Tables

  Subpart JJJ--National Emission Standards for Hazardous Air Pollutant 
                 Emissions: Group IV Polymers and Resins

63.1310  Applicability and designation of affected sources.
63.1311  Compliance schedule and relationship to existing applicable 
          rules.
63.1312  Definitions.
63.1313  Emission standards.
63.1314  Storage vessel provisions.
63.1315  Continuous process vents provisions.
63.1316  PET and polystyrene affected sources--emissions control 
          provisions.
63.1317  PET and polystyrene continuous process affected sources--
          monitoring provisions.
63.1318  PET and polystyrene continuous process affected sources--
          testing and compliance demonstration provisions.
63.1319  PET and polystyrene continuous process affected sources--
          recordkeeping provisions.
63.1320  PET and polystyrene continuous process affected sources--
          reporting provisions.
63.1321  Batch process vents provisions.
63.1322  Batch process vents--reference control technology.
63.1323  Batch process vents--methods and procedures for group 
          determination.
63.1324  Batch process vents--monitoring provisions.
63.1325  Batch process vents--performance test methods and procedures to 
          determine compliance.
63.1326  Batch process vents--recordkeeping provisions.
63.1327  Batch process vents--reporting requirements.
63.1328  Heat exchange systems provisions.
63.1329  Process contact cooling towers provisions.
63.1330  Wastewater provisions.
63.1331  Equipment leak provisions.
63.1332  Emissions averaging provisions.
63.1333  Additional test methods and procedures.
63.1334  Parameter monitoring levels and excursions.
63.1335  General recordkeeping and reporting provisions.
Table 1 to Subpart JJJ--Applicability of General Provisions to Subpart 
          JJJ Affected Sources
Table 2 to Subpart JJJ--Group 1 Storage Vessels at Existing Affected 
          Sources
Table 3 to Subpart JJJ--Group 1 Storage Vessels at Existing Affected 
          Sources Producing the Listed Thermoplastics
Table 4 to Subpart JJJ--Group 1 Storage Vessels at New Affected Sources
Table 5 to Subpart JJJ--Group 1 Storage Vessels at New Affected Sources 
          Producing the Listed Thermoplastics
Table 6 to Subpart JJJ--Known Organic Hazardous Air Pollutants From 
          Thermoplastics Products
Table 7 to Subpart JJJ--Group 1 Batch Process Vents--Monitoring, 
          Recordkeeping, and Reporting Requirements
Table 8 to Subpart JJJ--Operating Parameters for Which Levels are 
          Required to be Established for Continuous and Batch Process 
          Vents and Aggregate Batch Vent Streams

Subpart KKK  [Reserved]

 Subpart LLL--National Emission Standards for Hazardous Air Pollutants 
             From the Portland Cement Manufacturing Industry

                                 General

63.1340  Applicability and designation of affected sources.
63.1341  Definitions.

                 Emission Standards and Operating Limits

63.1342  Standards: General.
63.1343  Standards for kilns and in-line kiln/raw mills.
63.1344  Operating limits for kilns and in-line kiln/raw mills.
63.1345  Standards for clinker coolers.
63.1346  Standards for new and reconstructed raw material dryers.
63.1347  Standards for raw and finish mills.
63.1348  Standards for affected sources other than kilns; in-line kiln 
          raw mills; clinker coolers; new and reconstructed raw material 
          dryers; and raw and finish mills.

                  Monitoring and Compliance Provisions

63.1349  Performance testing requirements.
63.1350  Monitoring requirements.
63.1351  Compliance dates.
63.1352  Additional test methods.

                Notification, Reporting and Recordkeeping

63.1353  Notification requirements.
63.1354  Reporting requirements.
63.1355  Recordkeeping requirements.

                                  Other

63.1356  Exemption from new source performance standards.
63.1357  Temporary, conditioned exemption from particulate and opacity 
          standards.
63.1358  Delegation of authority.
63.1359  [Reserved]

[[Page 7]]


Table 1 to Subpart LLL of Part 63--Applicability of General Provisions

 Subpart MMM--National Emission Standards for Hazardous Air Pollutants 
               for Pesticide Active Ingredient Production

63.1360  Applicability.
63.1361  Definitions.
63.1362  Standards.
63.1363  Standards for equipment leaks.
63.1364  Compliance dates.
63.1365  Test methods and initial compliance procedures.
63.1366  Monitoring and inspection requirements.
63.1367  Recordkeeping requirements.
63.1368  Reporting requirements.
63.1369  Delegation of authority.

Table 1 to Subpart MMM of part 63--General Provisions Applicability to 
          Subpart MMM.
Table 2 to Subpart MMM of part 63--Standards for New and Existing PAI 
          Sources.
Table 3 to Subpart MMM of Part 63--Monitoring Requirements for Control 
          Devices.
Table 4 to Subpart MMM of Part 63--Control Requirements for Items of 
          Equipment that Meet the Criteria of Sec. 63.1362(k).

 Subpart NNN--National Emission Standards for Hazardous Air Pollutants 
                    for Wool Fiberglass Manufacturing

63.1380  Applicability.
63.1381  Definitions.
63.1382  Emission standards.
63.1383  Monitoring requirements.
63.1384  Performance test requirements.
63.1385  Test methods and procedures.
63.1386  Notification, recordkeeping, and reporting requirements.
63.1387  Compliance dates.
63.1388--63.1399  [Reserved]

Table 1 to Subpart NNN of part 63--Applicability of general provisions 
          (40 CFR part 63, subpart A) to subpart NNN.
Appendix A to Subpart NNN of part 63--Method for the determination of 
          LOI
Appendix B to Subpart NNN of part 63--Free formaldehyde analysis of 
          insulation resins by hydroxylamine hydrochloride
Appendix C to Subpart NNN of part 63--Method for the determination of 
          product density

Subpart OOO  [Reserved]

  Subpart PPP--National Emission Standards for Hazardous Air Pollutant 
               Emissions for Polyether Polyols Production

63.1420  Applicability and designation of affected sources.
63.1421  Delegation of authority.
63.1422  Compliance dates and relationship of this rule to existing 
          applicable rules.
63.1423  Definitions.
63.1424  Emission standards.
63.1425  Process vent control requirements.
63.1426  Process vent requirements for determining organic HAP 
          concentration, control efficiency, and aggregated organic HAP 
          emission reduction for a PMPU.
63.1427  Process vent requirements for processes using extended cookout 
          as an epoxide emission reduction technique.
63.1428  Process vent requirements for group determination of PMPUs 
          using a nonepoxide organic HAP to make or modify the product.
63.1429  Process vent monitoring requirements.
63.1430  Process vent reporting and recordkeeping requirements.
63.1431  Process vent annual epoxides emission factor plan requirements.
63.1432  Storage vessel provisions.
63.1433  Wastewater provisions.
63.1434  Equipment leak provisions.
63.1435  Heat exchanger provisions.
63.1436  [Reserved]
63.1437  Additional requirements for performance testing.
63.1438  Parameter monitoring levels and excursions.
63.1439  General recordkeeping and reporting provisions.

Table 1 to Subpart PPP of Part 63--Applicability of General Provisions 
          to Subpart PPP Affected Sources
Table 2 to Subpart PPP of Part 63--Applicability of Subparts F, G, H, 
          and U to Subpart PPP Affected Sources
Table 3 to Subpart PPP of Part 63--Group 1 Storage Vessels at Existing 
          and New Affected Sources
Table 4 to Subpart PPP of Part 63--Known Organic HAP From Polyether 
          Polyol Products
Table 5 to Subpart PPP of Part 63--Process Vents From Batch Unit 
          Operations--Monitoring, Recordkeeping, and Reporting 
          Requirements
Table 6 to Subpart PPP of Part 63--Process Vents From Continuous Unit 
          Operations--Monitoring, Recordkeeping, and Reporting 
          Requirements
Table 7 to Subpart PPP of Part 63--Operating Parameters for Which 
          Monitoring Levels are Required to be Established for Process 
          Vents Streams
Table 8 to Subpart PPP of Part 63--Routine Reports Required by This 
          Subpart

[[Page 8]]

Subparts QQQ--SSS  [Reserved]

 Subpart TTT--National Emission Standards for Hazardous Air Pollutants 
                        for Primary Lead Smelting

63.1541  Applicability.
63.1542  Definitions.
63.1543  Standards for process and process fugitive sources.
63.1544  Standards for fugitive dust sources.
63.1545  Compliance dates.
63.1546  Test methods.
63.1547  Monitoring requirements.
63.1548  Notification requirements.
63.1549  Recordkeeping and reporting requirements.
63.1550  Delegation of authority.

Subparts UUU--WWW  [Reserved]

 Subpart XXX--National Emission Standards for Hazardous Air Pollutants 
     for Ferroalloys Production: Ferromanganese and Silicomanganese

63.1620-63.1649  [Reserved]
63.1650  Applicability and compliance dates.
63.1651  Definitions.
63.1652  Emission standards.
63.1653  Opacity standards.
63.1654  Operational and work practice standards.
63.1655  Maintenance requirements.
63.1656  Performance testing, test methods, and compliance 
          demonstrations.
63.1657  Monitoring requirements.
63.1658  Notification requirements.
63.1659  Reporting requirements.
63.1660  Recordkeeping requirements.
63.1661  Delegation of authorities.
63.1662-63.1679  [Reserved]

Appendix A to Part 63--Test Methods
Appendix B to Part 63--Sources Defined for Early Reduction Provisions
Appendix C to Part 63--Determination of the Fraction Biodegraded 
          (Fbio) in a Biological Treatment Unit
Appendix D to Part 63--Alternative Validation Procedure for EPA Waste 
          and Wastewater Methods

    Authority: 42 U.S.C. 7401 et seq.

    Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.



 Subpart EEE--National Emission Standards for Hazardous Air Pollutants 
                     From Hazardous Waste Combustors

    Source: 63 FR 33820, June 19, 1998, unless otherwise noted.



Sec. Sec. 63.1200-63.1210  [Reserved]



Sec. 63.1211  Notification requirements.

    (a) Notification of Intent To Comply (NIC). (1) All hazardous waste 
combustors subject to this subpart shall prepare a Notification of 
Intent to Comply that includes the following information:
    (i) General information:
    (A) The name and address of the owner/operator and the source;
    (B) Whether the source is a major or an area source;
    (C) Waste minimization and emission control technique(s) being 
considered;
    (D) Emission monitoring technique(s) being considered;
    (E) Waste minimization and emission control technique(s) 
effectiveness;
    (F) A description of the evaluation criteria used or to be used to 
select waste minimization and/or emission control technique(s); and
    (G) A statement that the source intends to comply with this subpart 
by controlling emissions from the combustion of hazardous waste pursuant 
to the standards of this subpart.
    (ii) Information on key activities and estimated dates for these 
activities that will bring the source into compliance with emission 
control requirements of this subpart. The submission of key activities 
and dates is not intended to be static and may be revised by the source 
during the period the NIC is in effect. Revisions shall be submitted to 
the regulatory authority and be made available to the public. The 
following are the key activities and dates that shall be included:
    (A) The dates for beginning and completion of engineering studies to 
evaluate emission control systems or process changes for emissions;
    (B) The date by which contracts for emission control systems or 
process changes for emission control will be awarded, or the date by 
which orders will be issued for the purchase of component parts to 
accomplish emission control or process changes;
    (C) The date by which construction applications will be submitted;
    (D) The date by which on-site construction, installation of emission 
control equipment, or process change is to be initiated;

[[Page 9]]

    (E) The date by which on-site construction, installation of emission 
control equipment, or process change is to be completed; and
    (F) The date by which final compliance is to be achieved. The 
individual dates and milestones listed in paragraphs (a)(1)(ii)(A) 
through (F) of this section as part of the NIC are not requirements and 
therefore are not enforceable deadlines; the Agency is requiring 
paragraphs (a)(1)(ii)(A) through (F) of this section as part of the NIC 
only to inform the public of the source's intentions towards coming into 
compliance.
    (iii) A summary of the public meeting required under paragraph (b) 
of this section.
    (iv) For any source that does not intend to comply, but will not 
stop burning hazardous waste as required under paragraph (c) of this 
section, a certification that the designated source will:
    (A) Stop burning hazardous waste on or before the compliance date of 
the emission standards of this Subpart; and
    (B) Be necessary to combust the hazardous waste from another on-site 
source, during the year prior to the compliance date of the emission 
standards of this Subpart, because that other source is:
    (1) Installing equipment to come into compliance with the emission 
standards of this Subpart; or
    (2) Installing source reduction modifications to eliminate the need 
for further combustion of wastes.
    (2) A draft of the NIC must be made available for public review no 
later than 30 days prior to the public meeting required under paragraph 
(b)(1) of this section.
    (3) The final NIC must be submitted to the permitting agency no 
later than one year following the effective date of the emission 
standards of this subpart.
    (b) NIC Public Meeting and Notice. (1) Prior to the submission of 
the NIC to the permitting agency, and no later than 10 months after the 
effective date of the emission standards of this subpart, the source 
shall hold at least one informal meeting with the public to discuss 
anticipated activities described in the draft NIC for achieving 
compliance with the MACT standards promulgated in this subpart. The 
source must post a sign-in sheet or otherwise provide a voluntary 
opportunity for attendees to provide their names and addresses.
    (2) The source shall submit a summary of the meeting, along with the 
list of attendees and their addresses developed under paragraph (b)(1) 
of this section, and copies of any written comments or materials 
submitted at the meeting, to the permitting agency as part of the final 
NIC, in accordance with paragraph (a)(1)(iii) of this section.
    (3) The source must provide public notice of the NIC meeting at 
least 30 days prior to the meeting. The source shall provide public 
notice in all of the following forms:
    (i) Newspaper advertisement. The source shall publish a notice in a 
newspaper of general circulation in the county or equivalent 
jurisdiction of the source. In addition, the source shall publish the 
notice in newspapers of general circulation in adjacent counties or 
equivalent jurisdiction where such publication would be necessary to 
inform the affected public. The notice must be published as a display 
advertisement.
    (ii) Visible and accessible sign. The source shall post a notice on 
a clearly marked sign at or near the source. If the source places the 
sign on the source's property, then the sign must be large enough to be 
readable from the nearest spot where the public would pass by the 
source.
    (iii) Broadcast media announcement. The source shall broadcast a 
notice at least once on at least one local radio station or television 
station.
    (iv) Notice to the facility mailing list. The source shall provide a 
copy of the notice to the facility mailing list in accordance with 
Sec. 124.10(c)(1)(ix) of this chapter.
    (4) The notices required under paragraph (b)(3) of this section must 
include:
    (i) The date, time, and location of the meeting;
    (ii) A brief description of the purpose of the meeting;
    (iii) A brief description of the source and proposed operations, 
including the address or a map (e.g., a sketched or

[[Page 10]]

copied street map) of the source location;
    (iv) A statement encouraging people to contact the source at least 
72 hours before the meeting if they need special access to participate 
in the meeting;
    (v) A statement describing how the draft NIC can be obtained; and
    (vi) The name, address, and telephone number of a contact person for 
the NIC.
    (c) Sources that do not intend to comply. Those sources subject to 
the requirements of this subpart, except those sources meeting the 
requirements of paragraph (a)(1)(iv) of this section:
    (1) Who signify in their NIC an intent not to comply with the 
requirements of this Subpart, must stop burning hazardous waste on or 
before two years after the effective date of the emmission standards of 
this subpart;
    (2) Who do not intend to comply with this subpart must include in 
their NIC a schedule that includes key dates for the steps to be taken 
to stop burning hazardous waste. Key dates include the date for 
submittal of RCRA closure documents.



Sec. 63.1212  Progress reports.

    (a) General. Not later than two years after the effective date of 
the emission standards of this subpart, all sources subject to this 
Subpart except those hazardous waste combustion sources that comply with 
paragraph (b)(2) of this section shall:
    (1) Complete engineering design for any physical modifications to 
the source needed to comply with the emissions standards of this 
subpart;
    (2) Submit applicable construction applications to the applicable 
regulatory authority; and
    (3) Enter into a binding contractual commitment to purchase, 
fabricate, and install any equipment, devices, and ancillary structures 
needed to comply with the emission requirements of this subpart.
    (b) Demonstration. (1) Hazardous waste combustion sources shall 
submit to the regulatory authority a progress report on or before two 
years after the effective date of the emission standards of this subpart 
which contains information demonstrating that the source has met the 
requirements of paragraph (a) of this section. This information will be 
used by the regulatory authority to determine if the source has made 
adequate progress towards compliance with the applicable emission 
standards.
    (2) Sources that intend to come into compliance with the emissions 
standards of this subpart, but can do so without undertaking any of the 
activities described in paragraph (a) of this section, shall submit 
documentation either:
    (i) Demonstrating that the source, at the time of the progress 
report, is in compliance with the emissions requirements; or
    (ii) Specifying the steps that will be taken to bring the source 
into compliance, without undertaking any of the activities listed in 
paragraphs (a)(1) through (3) of this section.
    (3) Sources that fail to comply with paragraph (a) above or 
paragraph (b)(2) of this section shall stop burning hazardous waste on 
or before the date two years after the effective date of the emission 
standards of this subpart.
    (c) Schedule. (1) The progress report shall contain a detailed 
schedule that lists key dates for all projects that will bring the 
source into compliance with the requirements of this subpart (i.e., key 
dates for the activities required under paragraphs (b)(1)(i) through 
(iii) of this section). Dates shall cover the time frame from the 
progress report through the compliance date of the emission standards of 
this subpart.
    (2) The schedule shall contain the following dates:
    (i) Bid and award dates for construction contracts and equipment 
supply contractors;
    (ii) Milestones such as ground breaking, completion of drawings and 
specifications, equipment deliveries, intermediate construction 
completions, and testing;
    (iii) The dates on which applications were submitted for or obtained 
operating and construction permits or licenses;
    (iv) The dates by which approvals of any permits or licenses are 
anticipated; and

[[Page 11]]

    (v) The projected date by which the source will be in compliance 
with the requirements of this subpart.
    (d) Notice of intent to comply. The progress report shall contain a 
statement that the source intends or does not intend to come into 
compliance with the applicable emission control requirements of this 
subpart.
    (e) Sources that do not intend to comply. (1) Sources that: 
indicated in their NIC their intent not to comply with this subpart and 
stop burning hazardous waste prior to the submittal of a progress 
report; or meet the requirements of paragraph (a)(1)(iv) of this section 
are not required to include the requirements of paragraphs (b) and (c) 
of this section to their progress report, but shall include in their 
progress report: the date on which the source stopped burning hazardous 
waste; and the date(s) on which RCRA closure documents were submitted.
    (2) Those sources that signify in the progress report, submitted not 
later than two years after the effective date of the emission standards 
of this subpart, their intention not to comply with the requirements of 
this subpart must stop burning hazardous waste on or before the date two 
years after the effective date of the emission standards of this 
subpart.



Sec. 63.1213  Certification.

    (a) The Notice of Intent to Comply (NIC) and Progress Report 
submitted shall contain the following certification signed and dated by 
an authorized representative of the source:

    I certify under penalty of law that I have personally examined and 
am familiar with the information submitted in this document and all 
attachments and that, based on my inquiry of those individuals 
immediately responsible for obtaining the information, I believe that 
the information is true, accurate, and complete. I am aware that there 
are significant penalties for submitting false information, including 
the possibility of fine and imprisonment.

    (b) An authorized representative should be a responsible corporate 
officer (for a corporation), a general partner (for a partnership), the 
proprietor (of a sole proprietorship), or a principal executive officer 
or ranking elected official (for a municipality, State, Federal, or 
other public agency).



Sec. 63.1214  Extension of the compliance date.

    (a) A source that intends to come into compliance with the 
requirements of this subpart, but due to the installation of controls 
will not meet the compliance date, may request an extension of the 
compliance date for one year.
    (b) Sources subject to this subpart shall follow the requirements of 
Sec. 63.6(i)(4) or Sec. 63.1216 to request an extension of the 
compliance date.



Sec. 63.1215  Sources that become affected sources after the effective date of the emission standards of this subpart.

    (a) A source that begins to burn hazardous waste after the effective 
date of the emission standards of this subpart, therefore becoming an 
affected source, but prior to 9 months after the effective date of the 
emission standards of this subpart shall comply with all the 
requirements of Secs. 63.1211 through 63.1213 and associated time frames 
for public meetings and document submittals.
    (b) A source that intends to begin burning hazardous waste more than 
9 months after the effective date of the emission standards of this 
subpart, therefore becoming an affected source, shall meet all the 
requirements of Secs. 63.1211 through 63.1213 prior to burning hazardous 
waste.
    (1) Such sources shall make a draft NIC available, notice their 
public meeting, hold their public meeting, and submit a final NIC prior 
to burning hazardous waste.
    (2) Such sources also shall submit their progress report at the time 
of the submittal of their final NIC.



Sec. 63.1216  Extension of the compliance date to install pollution prevention or waste minimization controls.

    (a) Applicability. The owner or operator of any source subject to 
the requirements of this subpart may request from the Administrator or 
State with an approved Title V program an extension of one year to 
comply with the emission standards in this subpart, if the owner or 
operator can reasonably

[[Page 12]]

document that the installation of pollution prevention or waste 
minimization measures will significantly reduce the amount and/or 
toxicity of hazardous wastes entering the feedstream(s) of the 
combustion device(s) subject to this subpart, and that the facility 
could not otherwise install the necessary control measures and comply 
within three years after the effective date of the emission standards of 
this subpart.
    (b) Requirements for requesting an extension. Requests for a one-
year extension must be in writing, must be received not later than 12 
months before the affected source's compliance date, and must contain 
the following information:
    (1) A description of pollution prevention or waste minimization 
controls that, when installed, will significantly reduce the amount and/
or toxicity of hazardous wastes entering the feedstream(s) of the 
combustion device(s) subject to this subpart. Pollution prevention or 
waste minimization measures may include: equipment or technology 
modifications, reformulation or redesign of products, substitution of 
raw materials, improvements in work practices, maintenance, training, 
inventory control, or recycling practices conducted as defined in 40 CFR 
261.1(c);
    (2) A description of other pollution controls to be installed that 
are necessary to comply with the emission standards;
    (3) A reduction goal or estimate of the annual reductions in 
quantity and/or toxicity of hazardous waste(s) entering combustion 
feedstream(s) that will occur by installing the proposed pollution 
prevention or waste minimization measures;
    (4) A comparison of reductions in the amounts and/or toxicity of 
hazardous wastes combusted after installation of pollution prevention or 
waste minimization measures to the amounts and/or toxicity of hazardous 
wastes combusted prior to the installation of these measures; and, if 
the difference is less than a fifteen percent reduction, a comparison to 
pollution prevention and waste minimization reductions recorded during 
the previous five years;
    (5) Reasonable documentation that installation of the pollution 
prevention or waste minimization changes will not result in a net 
increase (except for documented increases in production) of hazardous 
constituents released to the environment through other emissions, wastes 
or effluents;
    (6) Reasonable documentation that the design and installation of 
waste minimization and other measures that are necessary for compliance 
cannot otherwise be installed within the three year compliance period, 
and
    (7) The information required in 40 CFR 63.6(i)(6)(i)(B) through (D).
    (8) Documentation prepared under an existing State required 
pollution prevention program that contains the information may be 
enclosed with a request for extension in lieu of paragraphs (b)(1) 
through (7) of this section.
    (c) Approval of request for extension of compliance. Based on the 
information provided in any request made under paragraph (a) of this 
section, the Administrator or State with an approved Title V program may 
grant an extension of compliance with the emission standards identified 
in paragraph (a) of this section. The extension will be in writing in 
accordance with Secs. 63.6(i)(10)(i) through 63.6(i)(10)(v)(A). EPA and 
States must consider the information required in paragraph (a) of this 
section in approving or denying requests for one-year compliance 
extensions.

Subpart FFF  [Reserved]



 Subpart GGG--National Emission Standards for Pharmaceuticals Production

    Source: 63 FR 50326, Sept. 21, 1998, unless otherwise noted.



Sec. 63.1250  Applicability.

    (a) Definition of affected source. The affected source subject to 
this subpart is the pharmaceutical manufacturing operation, as defined 
in Sec. 63.1251. Except as specified in paragraph (d) of this section, 
the provisions of this subpart

[[Page 13]]

apply to pharmaceutical manufacturing operations that meet the criteria 
specified in paragraphs (a)(1) through (a)(3) of this section as 
follows:
    (1) Manufacture a pharmaceutical product, as defined in 
Sec. 63.1251;
    (2) Are located at a plant site that is a major source as defined in 
section 112(a) of the Act; and
    (3) Process, use, or produce HAP.
    (b) New source applicability. A new affected source subject to this 
subpart and to which the requirements for new sources apply is: an 
affected source for which construction or reconstruction commenced after 
April 2, 1997 and the standard was applicable at the time of 
construction or reconstruction; or a pharmaceutical manufacturing 
process unit (PMPU), dedicated to manufacturing a single product, that 
has the potential to emit 10 tons per year of any one HAP or 25 tons per 
year of combined HAP, for which construction commenced after April 2, 
1997.
    (c) General Provisions. Table 1 of this subpart specifies the 
provisions of subpart A of this part that apply to an owner or operator 
of an affected source subject to this subpart, and clarifies specific 
provisions in subpart A of this part as necessary for this subpart.
    (d) Processes exempted from the affected source. The provisions of 
this subpart do not apply to research and development facilities.
    (e) Storage tank ownership determination. The owner or operator 
shall follow the procedures specified in paragraphs (e)(1) through 
(e)(5) of this section to determine to which PMPU a storage tank shall 
belong.
    (1) If a storage tank is dedicated to a single PMPU, the storage 
tank shall belong to that PMPU.
    (2) If a storage tank is shared among PMPU's, then the storage tank 
shall belong to that PMPU located on the same plant site as the storage 
tank that has the greatest annual volume input into or output from the 
storage tank (i.e., said PMPU has the predominant use of the storage 
tank).
    (3) If predominant use cannot be determined for a storage tank that 
is shared among PMPU's and if one of those PMPU's is subject to this 
subpart, the storage tank shall belong to said PMPU.
    (4) If the predominant use of a storage tank varies from year to 
year, then predominant use shall be determined based on the utilization 
that occurred during the year preceding September 21, 1998 for existing 
affected sources. For new affected sources, predominant use will be 
based on the first year after initial startup. The determination of 
predominant use shall be reported in the Notification of Compliance 
Status required by Sec. 63.1260(f). If the predominant use changes, the 
redetermination of predominant use shall be reported in the next 
Periodic Report.
    (5) If the storage tank begins receiving material from (or sending 
material to) another PMPU; or ceases to receive material from (or send 
material to) a PMPU; or if the applicability of this subpart to a 
storage tank has been determined according to the provisions of 
paragraphs (e)(1) through (4) of this section and there is a significant 
change in the use of the storage tank that could reasonably change the 
predominant use, the owner or operator shall reevaluate the 
applicability of this subpart to the storage tank, and report such 
changes to EPA in the next Periodic report.
    (f) Compliance dates. The compliance dates for affected sources are 
as follows:
    (1) An owner or operator of an existing affected source must comply 
with the provisions of this subpart within 3 years after September 21, 
1998.
    (2) An owner or operator of a new or reconstructed affected source 
must comply with the provisions of this subpart on September 21, 1998 or 
upon startup, whichever is later.
    (3) Notwithstanding the requirements of paragraphs (f)(1) and (2) of 
this section, a new source which commences construction or 
reconstruction after April 2, 1997 and before September 21, 1998 shall 
not be required to comply with such promulgated standard until 3 years 
after September 21, 1998 if:
    (i) The promulgated standard is more stringent than the proposed 
standard; and
    (ii) The owner or operator complies with the standard as proposed 
during the 3-year period immediately after September 21, 1998.

[[Page 14]]

    (4) Pursuant to section 112(i)(3)(B) of the Act, an owner or 
operator may request an extension allowing the existing source up to 1 
additional year to comply with section 112(d) standards.
    (i) For purposes of this subpart, a request for an extension shall 
be submitted no later than 120 days prior to the compliance dates 
specified in paragraphs (f)(1) through (3) of this section, except as 
provided in paragraph (f)(4)(ii) of this section. The dates specified in 
Sec. 63.6(i) for submittal of requests for extensions shall not apply to 
sources subject to this subpart.
    (ii) An owner or operator may submit a compliance extension request 
after the date specified in paragraph (f)(4)(i) of this section provided 
the need for the compliance extension arose after that date and before 
the otherwise applicable compliance date, and the need arose due to 
circumstances beyond reasonable control of the owner or operator. This 
request shall include the data described in Sec. 63.6(i)(6)(i)(A), (B), 
(C), and (D).
    (g) Applicability of this subpart except during periods of startup, 
shutdown, and malfunction. (1) Each provision set forth in this subpart 
shall apply at all times except that emission limitations shall not 
apply during periods of: startup; shutdown; and malfunction, if the 
startup, shutdown, and malfunction precludes the ability of a particular 
emission point of an affected source to comply with one or more specific 
emission limitations to which it is subject and the owner or operator 
follows the provisions for periods of startup, shutdown, and 
malfunction, as specified in Secs. 63.1259(a)(3) and 63.1260(i). 
Startup, shutdown, and malfunction are defined in Sec. 63.1251.
    (2) The provisions set forth in Sec. 63.1255 of this subpart shall 
apply at all times except during periods of nonoperation of the PMPU (or 
specific portion thereof) in which the lines are drained and 
depressurized resulting in the cessation of the emissions to which 
Sec. 63.1255 of this subpart applies.
    (3) The owner or operator shall not shut down items of equipment 
that are required or utilized for compliance with the emissions 
limitations of this subpart during times when emissions (or, where 
applicable, wastewater streams or residuals) are being routed to such 
items of equipment, if the shutdown would contravene emissions 
limitations of this subpart applicable to such items of equipment. This 
paragraph does not apply if the item of equipment is malfunctioning, or 
if the owner or operator must shut down the equipment to avoid damage 
due to a malfunction of the PMPU or portion thereof.
    (4) During startups, shutdowns, and malfunctions when the emissions 
limitations of this subpart do not apply pursuant to paragraphs (g)(1) 
through (3) of this section, the owner or operator shall implement, to 
the extent reasonably available, measures to prevent or minimize excess 
emissions to the extent practical. For purposes of this paragraph, 
``excess emissions'' means emissions in excess of those that would have 
occurred if there were no startup, shutdown, or malfunction and the 
owner or operator complied with the relevant provisions of this subpart. 
The measures to be taken shall be identified in the applicable startup, 
shutdown, and malfunction plan, and may include, but are not limited to, 
air pollution control technologies, work practices, pollution 
prevention, monitoring, and/or changes in the manner of operation of the 
source. Back-up control devices are not required, but may be used if 
available.
    (h) Consistency with other regulations. (1) Consistency with other 
MACT standards. After the compliance dates specified in this section, an 
affected source subject to the provisions of this subpart that is also 
subject to the provisions of any other subpart of 40 CFR part 63 may 
elect, to the extent the subparts are consistent, which subpart under 
which to maintain records and report to EPA. The affected source shall 
identify in the Notification of Compliance Status report required by 
Sec. 63.1260(f) under which authority such records will be maintained.
    (2) Consistency with 40 CFR parts 264 and 265, subparts AA, BB, and/
or CC. After the compliance dates specified in this section, if any 
affected source subject to this subpart is also subject to monitoring, 
recordkeeping, and reporting requirements in 40 CFR part 264, subpart 
AA, BB, or CC, or is subject to

[[Page 15]]

monitoring and recordkeeping requirements in 40 CFR part 265, subpart 
AA, BB, or CC and the owner or operator complies with the periodic 
reporting requirements under 40 CFR part 264, subpart AA, BB, or CC that 
would apply to the device if the facility had final-permitted status, 
the owner or operator may elect to comply either with the monitoring, 
recordkeeping, and reporting requirements of this subpart, or with the 
monitoring, recordkeeping, and reporting requirements in 40 CFR parts 
264 and/or 265, as described in this paragraph, which shall constitute 
compliance with the monitoring, record keeping, and reporting 
requirements of this subpart. If the owner or operator elects to comply 
with the monitoring, recordkeeping, and reporting requirements in 40 CFR 
parts 264 and/or 265, the owner or operator shall report all information 
required by Sec. 63.1260(g). The owner or operator shall identify in the 
Notification of Compliance Status required by Sec. 63.1260(f) the 
monitoring, recordkeeping, and reporting authority under which the owner 
or operator will comply.
    (3) Consistency with 40 CFR 60.112b. After the compliance dates 
specified in this section, a storage tank controlled with a floating 
roof and in compliance with the provisions of 40 CFR 60.112b, subpart 
Kb, constitutes compliance with the provisions of this subpart GGG. A 
storage tank with a fixed roof, closed vent system, and control device 
in compliance with the provisions of 40 CFR 60.112b, subpart Kb must 
comply with the monitoring, recordkeeping, and reporting provisions of 
this subpart GGG. The owner or operator shall identify in the 
Notification of Compliance Status report required by Sec. 63.1260(f) 
which tanks are in compliance with subpart Kb.
    (4) Consistency with subpart I of this part. After the compliance 
dates specified in this section, for equipment at an affected source 
subject to this subpart that is also subject to subpart I of this part, 
an owner or operator may elect to comply with either the provisions of 
this subpart GGG or the provisions of subpart I of this part. The owner 
or operator shall identify in the Notification of Compliance Status 
report required by Sec. 63.1260(f) the provisions with which the owner 
elects to comply.
    (5) Consistency with other regulations for wastewater. After the 
compliance dates specified in this section, the owner or operator of an 
affected wastewater that is also subject to provisions in 40 CFR parts 
260 through 272 shall comply with the more stringent control 
requirements (e.g., waste management units, numerical treatment 
standards, etc.) and the more stringent testing, monitoring, recording, 
and recordkeeping requirements that overlap between the provisions of 
this subpart and the provisions of 40 CFR parts 260 through 272. The 
owner or operator shall keep a record of the information used to 
determine which requirements were the most stringent and shall submit 
this information if requested by the Administrator.
    (i) For the purposes of establishing whether a person is in 
violation of this subpart, nothing in this subpart shall preclude the 
use of any credible evidence or information relevant to whether a source 
would have been in compliance with applicable requirements.



Sec. 63.1251  Definitions.

    Terms used in this subpart are defined in the Act, in subpart A of 
this part, or in this section. If the same term is defined in subpart A 
of this part and in this section, it shall have the meaning given in 
this section for the purposes of this subpart.
    Active ingredient means any component that is intended to furnish 
pharmacological activity or other direct effect in the diagnosis, cure, 
mitigation, treatment, or prevention of disease, or to affect the 
structure or any function of the body of man or other animals. The term 
includes those components that may undergo chemical change in the 
manufacture of the pharmaceutical product and be present in the 
pharmaceutical product in a modified form intended to furnish the 
specified activity or effect.
    Actual HAP emissions means the HAP emitted to the atmosphere from 
either uncontrolled or controlled emission points.

[[Page 16]]

    Air pollution control device or Control device means equipment 
installed on a process vent, storage tank, wastewater treatment exhaust 
stack, or combination thereof that reduces the mass of HAP emitted to 
the air. The equipment may consist of an individual device or a series 
of devices. Examples include, but are not limited to, incinerators, 
carbon adsorption units, condensers, flares, boilers, process heaters, 
and gas absorbers. Process condensers are not considered air pollution 
control devices or control devices.
    Annual average concentration, as used in the wastewater provisions, 
means the annual average concentration as determined according to the 
procedures specified in Sec. 63.1257(e)(1).
    Automated monitoring and recording system means any means of 
measuring values of monitored parameters and creating a hard copy or 
computer record of the measured values that does not require manual 
reading of monitoring instruments and manual transcription of data 
values. Automated monitoring and recording systems include, but are not 
limited to, computerized systems and strip charts.
    Batch emission episode means a discrete venting episode that may be 
associated with a single unit operation. A unit operation may have more 
than one batch emission episode. For example, a displacement of vapor 
resulting from the charging of a vessel with HAP will result in a 
discrete emission episode that will last through the duration of the 
charge and will have an average flowrate equal to the rate of the 
charge. If the vessel is then heated, there will also be another 
discrete emission episode resulting from the expulsion of expanded 
vapor. Both emission episodes may occur in the same vessel or unit 
operation. There are possibly other emission episodes that may occur 
from the vessel or other process equipment, depending on process 
operations.
    Batch operation or Batch process means a noncontinuous operation 
involving intermittent or discontinuous feed into equipment, and, in 
general, involves the emptying of the equipment after the batch 
operation ceases and prior to beginning a new operation. Addition of raw 
material and withdrawal of product do not occur simultaneously in a 
batch operation.
    Bench-scale batch process means a batch process (other than a 
research and development facility) that is capable of being located on a 
laboratory bench top. This bench-scale equipment will typically include 
reagent feed vessels, a small reactor and associated product separator, 
recovery and holding equipment. These processes are only capable of 
producing small quantities of product.
    Block means a time period that comprises a single batch.
    Cleaning operation means routine rinsing, washing, or boil-off of 
equipment in batch operations between batches.
    Closed biological treatment process means a tank or surface 
impoundment where biological treatment occurs and air emissions from the 
treatment process are routed to either a control device by means of a 
closed-vent system or by means of hard-piping. The tank or surface 
impoundment has a fixed roof, as defined in this section, or a floating 
flexible membrane cover that meets the requirements specified in 
Sec. 63.1256(c).
    Closed-loop system means an enclosed system that returns process 
fluid to the process and is not vented to the atmosphere except through 
a closed-vent system.
    Closed-purge system means a system or combination of system and 
portable containers, to capture purged liquids. Containers must be 
covered or closed when not being filled or emptied.
    Closed-vent system means a system that is not open to the atmosphere 
and is composed of piping, ductwork, connections, and, if necessary, 
flow inducing devices that transport gas or vapor from an emission point 
to a control device.
    Combustion device means an individual unit of equipment, such as a 
flare, incinerator, process heater, or boiler, used for the combustion 
of HAP vapors.
    Component means any ingredient for use in the manufacture of a drug 
product, including those that may not appear in such drug product.
    Connector means flanged, screwed, or other joined fittings used to 
connect

[[Page 17]]

two pipe lines or a pipe line and a piece of equipment. A common 
connector is a flange. Joined fittings welded completely around the 
circumference of the interface are not considered connectors for the 
purpose of this regulation. For the purpose of reporting and 
recordkeeping, connector means joined fittings that are not 
inaccessible, ceramic, or ceramic-lined as described in 
Sec. 63.1255(b)(1)(vii) and Sec. 63.1255(f)(3).
    Construction means the onsite fabrication, erection, or installation 
of an affected source or a PMPU.
    Consumption means the quantity of HAP entering a process that is not 
used as reactant (makeup). If the same HAP component is generated in the 
process as well as added as makeup, consumption shall include the 
quantity generated in the process, as calculated assuming 100 
theoretical conversion. The quantity of material used as reactant is the 
theoretical amount needed assuming a 100 percent stoichiometric 
conversion. Makeup is the net amount of material that must be added to 
the process to replenish losses.
    Container, as used in the wastewater provisions, means any portable 
waste management unit that has a capacity greater than or equal to 0.1 
m3 in which a material is stored, transported, treated, or 
otherwise handled. Examples of containers are drums, barrels, tank 
trucks, barges, dumpsters, tank cars, dump trucks, and ships.
    Continuous process means a process where the inputs and outputs flow 
continuously throughout the duration of the process. Continuous 
processes are typically steady state.
    Continuous recorder means a data recording device that either 
records an instantaneous data value at least once every 15 minutes or 
records 15-minute or more frequent block average values.
    Continuous seal means a seal that forms a continuous closure that 
completely covers the space between the wall of the storage tank and the 
edge of the floating roof. A continuous seal may be a vapor-mounted, 
liquid-mounted, or metallic shoe seal.
    Control device, for purposes of this Sec. 63.1255, means any 
equipment used for recovering or oxidizing organic hazardous air 
pollutant vapors. Such equipment includes, but is not limited to, 
absorbers, carbon adsorbers, condensers, flares, boilers, and process 
heaters.
    Controlled HAP emissions means the quantity of HAP discharged to the 
atmosphere from an air pollution control device.
    Cover, as used in the wastewater provisions, means a device or 
system which is placed on or over a waste management unit containing 
wastewater or residuals so that the entire surface area is enclosed to 
minimize air emissions. A cover may have openings necessary for 
operation, inspection, and maintenance of the waste management unit such 
as access hatches, sampling ports, and gauge wells provided that each 
opening is closed when not in use. Examples of covers include a fixed 
roof installed on a wastewater tank, a lid installed on a container, and 
an air-supported enclosure installed over a waste management unit.
    Dedicated PMPU means a PMPU that is composed of equipment that is 
used to manufacture the same product for a continuous period of 6 months 
or greater. The PMPU includes any shared storage tank(s) that are 
determined to belong to the PMPU according to the procedures in 
Sec. 63.1250(e).
    Double block and bleed system means two block valves connected in 
series with a bleed valve or line that can vent the line between the two 
block valves.
    Duct work means a conveyance system such as those commonly used for 
heating and ventilation systems. It is often made of sheet metal and 
often has sections connected by screws or crimping. Hard-piping is not 
ductwork.
    Enhanced biological treatment system or enhanced biological 
treatment process means an aerated, thoroughly mixed treatment unit(s) 
that contains biomass suspended in water followed by a clarifier that 
removes biomass from the treated water and recycles recovered biomass to 
the aeration unit. The mixed liquor volatile suspended solids (biomass) 
is greater than 1 kilogram per cubic meter throughout each aeration 
unit. The biomass is suspended and aerated in the water of the aeration 
unit(s) by either submerged air flow or mechanical agitation. A 
thoroughly mixed treatment unit is a unit

[[Page 18]]

that is designed and operated to approach or achieve uniform biomass 
distribution and organic compound concentration throughout the aeration 
unit by quickly dispersing the recycled biomass and the wastewater 
entering the unit.
    Equipment, for purposes of Sec. 63.1255, means each pump, 
compressor, agitator, pressure relief device, sampling connection 
system, open-ended valve or line, valve, connector, and instrumentation 
system in organic hazardous air pollutant service; and any control 
devices or closed-vent systems required by this subpart.
    Excipient means any substance other than the active drug or product 
which have been appropriately evaluated for safety and are included in a 
drug delivery system to either aid the processing of the drug delivery 
system during its manufacture; protect, support or enhance stability, 
bioavailability, or patient acceptability; assist in product 
identification; or enhance any other attribute of the overall safety and 
effectiveness of the drug delivery system during storage or use.
    External floating roof means a pontoon-type or double-deck type 
cover that rests on the liquid surface in a storage tank or waste 
management unit with no fixed roof.
    Fill or filling means the introduction of material into a storage 
tank or the introduction of a wastewater stream or residual into a waste 
management unit, but not necessarily to complete capacity.
    First attempt at repair means to take action for the purpose of 
stopping or reducing leakage of organic material to the atmosphere.
    Fixed roof means a cover that is mounted on a waste management unit 
or storage tank in a stationary manner and that does not move with 
fluctuations in liquid level.
    Floating roof means a cover consisting of a double deck, pontoon 
single deck, internal floating cover or covered floating roof, which 
rests upon and is supported by the liquid being contained, and is 
equipped with a closure seal or seals to close the space between the 
roof edge and waste management unit or storage tank wall.
    Flow indicator means a device which indicates whether gas flow is, 
or whether the valve position would allow gas flow to be, present in a 
line.
    Formulation means the process of mixing, blending, or diluting one 
or more active or inert ingredients with one or more active or inert 
ingredients, without an intended chemical reaction, to obtain a 
pharmaceutical dosage form. Formulation operations include mixing, 
compounding, blending, and tablet coating.
    Group of processes means all of the equipment associated with 
processes in a building, processing area, or facility-wide. For a 
dedicated process, a group of processes may consist of a single process.
    Halogen atoms mean atoms of chlorine or fluorine.
    Halogenated compounds means organic HAP compounds that contain 
halogen atoms.
    Halogenated vent stream or Halogenated stream means a process, 
storage tank, or waste management unit vent determined to have a 
concentration of halogenated compounds of greater than 20 ppmv, as 
determined through process knowledge, test results using Method 18 of 40 
CFR part 60, appendix A, or test results using any other test method 
that has been validated according to the procedures in Method 301 of 
appendix A of this part.
    Hard-piping means piping or tubing that is manufactured and properly 
installed using good engineering judgment and standards, such as ANSI 
B31-3.
    Hydrogen halides and halogens means hydrogen chloride (HCl), 
chlorine (Cl2), and hydrogen fluoride (HF).
    In gas/vapor service means that a piece of equipment in organic 
hazardous air pollutant service contains a gas or vapor at operating 
conditions.
    In heavy liquid service means that a piece of equipment in organic 
hazardous air pollutant service is not in gas/vapor service or in light 
liquid service.
    In light liquid service means that a piece of equipment in organic 
hazardous air pollutant service contains a liquid that meets the 
following conditions:

[[Page 19]]

    (1) The vapor pressure of one or more of the organic compounds is 
greater than 0.3 kilopascals at 20 deg.C;
    (2) The total concentration of the pure organic compounds 
constituents having a vapor pressure greater than 0.3 kilopascals at 
20 deg.C is equal to or greater than 20 percent by weight of the total 
process stream; and
    (3) The fluid is a liquid at operating conditions. (Note: Vapor 
pressures may be determined by the methods described in 40 CFR 
60.485(e)(1).)
    In liquid service means that a piece of equipment in organic 
hazardous air pollutant service is not in gas/vapor service.
    In organic hazardous air pollutant or in organic HAP service means 
that a piece of equipment either contains or contacts a fluid (liquid or 
gas) that is at least 5 percent by weight of total organic HAP's as 
determined according to the provisions of Sec. 63.180(d). The provisions 
of Sec. 63.180(d) also specify how to determine that a piece of 
equipment is not in organic HAP service.
    In vacuum service means that equipment is operating at an internal 
pressure which is at least 5 kilopascals below ambient pressure.
    In-situ sampling systems means nonextractive samplers or in-line 
samplers.
    Individual drain system means the stationary system used to convey 
wastewater streams or residuals to a waste management unit. The term 
includes hard piping; all process drains and junction boxes; and 
associated sewer lines, other junction boxes, manholes, sumps, and lift 
stations conveying wastewater streams or residuals. A segregated 
stormwater sewer system, which is a drain and collection system designed 
and operated for the sole purpose of collecting rainfall-runoff at a 
facility, and which is segregated from all other individual drain 
systems, is excluded from this definition.
    Initial startup means the first time a new or reconstructed source 
begins production. Initial startup does not include operation solely for 
testing equipment. Initial startup does not include subsequent start ups 
(as defined in this section) of processes following malfunctions or 
process shutdowns.
    Internal floating roof means a cover that rests or floats on the 
liquid surface (but not necessarily in complete contact with it) inside 
a storage tank or waste management unit that has a permanently affixed 
roof.
    Instrumentation system means a group of equipment components used to 
condition and convey a sample of the process fluid to analyzers and 
instruments for the purpose of determining process operating conditions 
(e.g., composition, pressure, flow, etc.). Valves and connectors are the 
predominant type of equipment used in instrumentation systems; however, 
other types of equipment may also be included in these systems. Only 
valves nominally 0.5 inches and smaller, and connectors nominally 0.75 
inches and smaller in diameter are considered instrumentation systems 
for the purposes of this subpart. Valves greater than nominally 0.5 
inches and connectors greater than nominally 0.75 inches associated with 
instrumentation systems are not considered part of instrumentation 
systems and must be monitored individually.
    Junction box means a manhole or access point to a wastewater sewer 
system line or a lift station.
    Large control device means a control device that controls process 
vents with total emissions of greater than or equal to 10 tons of HAP 
per year, before control.
    Liquid-mounted seal means a foam- or liquid-filled seal mounted in 
contact with the liquid between the wall of the storage tank or waste 
management unit and the floating roof. The seal is mounted continuously 
around the tank or unit.
    Liquids dripping means any visible leakage from the seal including 
dripping, spraying, misting, clouding, and ice formation. Indications of 
liquid dripping include puddling or new stains that are indicative of an 
existing evaporated drip.
    Malfunction means any sudden, infrequent, and not reasonably 
preventable failure of air pollution control equipment, emissions 
monitoring equipment, process equipment, or a process to operate in a 
normal or usual manner. Failures that are caused all or in

[[Page 20]]

part by poor maintenance or careless operation are not malfunctions.
    Maximum true vapor pressure means the equilibrium partial pressure 
exerted by the total organic HAP in the stored or transferred liquid at 
the temperature equal to the highest calendar-month average of the 
liquid storage or transferred temperature for liquids stored or 
transferred above or below the ambient temperature or at the local 
maximum monthly average temperature as reported by the National Weather 
Service for liquids stored or transferred at the ambient temperature, as 
determined:
    (1) In accordance with methods described in Chapter 19.2 of the 
American Petroleum Institute's Manual of Petroleum Measurement 
Standards, Evaporative Loss From Floating-Roof Tanks (incorporated by 
reference as specified in Sec. 63.14); or
    (2) As obtained from standard reference texts; or
    (3) As determined by the American Society for Testing and Materials 
Method D2879-97, Test Method for Vapor Pressure-Temperature Relationship 
and Initial Decomposition Temperature of Liquids by Isoteniscope 
(incorporated by reference as specified in Sec. 63.14); or
    (4) Any other method approved by the Administrator.
    Metallic shoe seal or mechanical shoe seal means metal sheets that 
are held vertically against the wall of the storage tank by springs, 
weighted levers, or other mechanisms and connected to the floating roof 
by braces or other means. A flexible coated fabric (envelope) spans the 
annular space between the metal sheet and the floating roof.
    Nondedicated formulation operations means equipment used to 
formulate numerous products.
    Nondedicated recovery device(s) means a recovery device that 
receives material from more than one PMPU.
    Nonrepairable means that it is technically infeasible to repair a 
piece of equipment from which a leak has been detected without a process 
shutdown.
    Open biological treatment process means a biological treatment 
process that is not a closed biological treatment process as defined in 
this section.
    Open-ended valve or line means any valve, except pressure relief 
valves, having one side of the valve seat in contact with process fluid 
and one side open to atmosphere, either directly or through open piping.
    Operating scenario for the purposes of reporting and recordkeeping, 
means any specific operation of a PMPU and includes for each process:
    (1) A description of the process and the type of process equipment 
used;
    (2) An identification of related process vents and their associated 
emissions episodes and durations, wastewater PODs, and storage tanks;
    (3) The applicable control requirements of this subpart, including 
the level of required control;
    (4) The control or treatment devices used, as applicable, including 
a description of operating and/or testing conditions for any associated 
control device;
    (5) The process vents, wastewater PODs, and storage tanks (including 
those from other processes) that are simultaneously routed to the 
control or treatment device(s);
    (6) The applicable monitoring requirements of this subpart and any 
parametric level that assures compliance for all emissions routed to the 
control or treatment device;
    (7) Calculations and engineering analyses required to demonstrate 
compliance; and
    (8) A verification that the operating conditions for any associated 
control or treatment device have not been exceeded and that any required 
calculations and engineering analyses have been performed. For reporting 
purposes, a change to any of these elements not previously reported, 
except for paragraph (5) of this definition, shall constitute a new 
operating scenario.
    Partially soluble HAP means a HAP listed in Table 2 of this subpart.
    Pharmaceutical manufacturing operations means the facility-wide 
collection of PMPU's and any other equipment such as heat exchanger 
systems, or cooling towers that are not associated with an individual 
PMPU, but that are located at a facility for the purpose of 
manufacturing pharmaceutical products and are under common control.

[[Page 21]]

    Pharmaceutical manufacturing process unit (PMPU) means the process, 
as defined in this subpart, and any associated storage tanks, equipment 
identified in Sec. 63.1252(f), and components such as pumps, 
compressors, agitators, pressure relief devices, sampling connection 
systems, open-ended valves or lines, valves, connectors, and 
instrumentation systems that are used in the manufacturing of a 
pharmaceutical product.
    Pharmaceutical product means:
    (1) Any material described by the standard industrial classification 
(SIC) code 2833 or 2834;
    (2) Any material whose manufacturing process is described by north 
american industrial classification system (NAICS) code 325411 or 325412;
    (3) A finished dosage form of a drug, for example, a tablet, 
capsule, solution, etc., that contains an active ingredient generally, 
but not necessarily, in association with inactive ingredients; or
    (4) Any component whose intended primary use is to furnish 
pharmacological activity or other direct effect in the diagnosis, cure, 
mitigation, treatment, or prevention of disease, or to affect the 
structure or any function of the body of man or other animals (the term 
does not include excipients, but includes drug components such as raw 
starting materials or precursors that undergo chemical change or 
processing before they become active ingredients).
    Plant site means all contiguous or adjoining property that is under 
common control, including properties that are separated only by a road 
or other public right-of-way. Common control includes properties that 
are owned, leased, or operated by the same entity, parent entity, 
subsidiary, or any combination thereof.
    Point of determination (POD) means the point where a wastewater 
stream exits the process, storage tank, or last recovery device. If 
soluble and/or partially soluble HAP compounds are not recovered from 
water before discharge, the discharge point from the process equipment 
or storage tank is a POD. If water streams are routed to a recovery 
device, the discharge from the recovery device is a POD. There can be 
more than 1 POD per process or PMPU.
    Pressure release means the emission of materials resulting from the 
system pressure being greater than the set pressure of the pressure 
relief device. This release can be one release or a series of releases 
over a short time period due to a malfunction in the process.
    Pressure relief device or valve means a safety device used to 
prevent operating pressures from exceeding the maximum allowable working 
pressure of the process equipment. A common pressure relief device is a 
spring-loaded pressure relief valve. Devices that are actuated either by 
a pressure of less than or equal to 2.5 psig or by a vacuum are not 
pressure relief devices.
    Primary use means the single largest use of a material.
    Process means all equipment which collectively function to produce a 
pharmaceutical product. A process may consist of one or more unit 
operations. For the purposes of this subpart, process includes all or a 
combination of reaction, recovery, separation, purification, or other 
activity, operation, manufacture, or treatment which are used to produce 
a pharmaceutical product. Cleaning operations conducted are considered 
part of the process. The holding of the pharmaceutical product in tanks 
or other holding equipment for more than 30 consecutive days, or 
transfer of the pharmaceutical product to containers for shipment, marks 
the end of a process, and the tanks are considered part of the PMPU that 
produced the stored material. When material from one unit operation is 
used as the feedstock for the production of two or more different 
pharmaceutical products, the unit operation is considered the endpoint 
of the process that produced the material, and the unit operations into 
which the material is routed mark the beginning of the other processes. 
Nondedicated recovery devices located within a contiguous area within 
the affected source are considered single processes. Nondedicated 
formulation operations occurring within a contiguous area are considered 
a single process that is used to formulate numerous materials and/or 
products. Quality Assurance and Quality Control laboratories are not 
considered part of any process.

[[Page 22]]

    Process condenser means a condenser whose primary purpose is to 
recover material as an integral part of a process. The condenser must 
support a vapor-to-liquid phase change for periods of source equipment 
operation that are at or above the boiling or bubble point of 
substance(s) at the liquid surface. Examples of process condensers 
include distillation condensers, reflux condensers, and condensers used 
in stripping or flashing operations. In a series of condensers, all 
condensers up to and including the first condenser with an exit gas 
temperature below the boiling or bubble point of the substance(s) at the 
liquid surface are considered to be process condensers. All condensers 
in line prior to a vacuum source are included in this definition.
    Process shutdown means a work practice or operational procedure that 
stops production from a process or part of a process during which it is 
technically feasible to clear process material from a process or part of 
a process consistent with safety constraints and during which repairs 
can be effected. An unscheduled work practice or operational procedure 
that stops production from a process or part of a process for less than 
24 hours is not a process shutdown. An unscheduled work practice or 
operational procedure that would stop production from a process or part 
of a process for a shorter period of time than would be required to 
clear the process or part of the process of materials and start up the 
process, and would result in greater emissions than delay of repair of 
leaking components until the next scheduled process shutdown, is not a 
process shutdown. The use of spare equipment and technically feasible 
bypassing of equipment without stopping production are not process 
shutdowns.
    Process tank means a tank that is used to collect material 
discharged from a feedstock storage tank or unit operation within the 
process and transfer this material to another unit operation within the 
process or to a product storage tank. Surge control vessels and bottoms 
receivers that fit these conditions are considered process tanks.
    Process vent means a vent from a unit operation or vents from 
multiple unit operations within a process that are manifolded together 
into a common header, through which a HAP-containing gas stream is, or 
has the potential to be, released to the atmosphere. Examples of process 
vents include, but are not limited to, vents on condensers used for 
product recovery, bottom receivers, surge control vessels, reactors, 
filters, centrifuges, and process tanks. Emission streams that are 
undiluted and uncontrolled containing less than 50 ppmv HAP, as 
determined through process knowledge that no HAP are present in the 
emission stream or using an engineering assessment as discussed in 
Sec. 63.1257(d)(2)(ii), test data using Methods 18 of 40 CFR part 60, 
appendix A, or any other test method that has been validated according 
to the procedures in Method 301 of appendix A of this part, are not 
considered process vents. Process vents do not include vents on storage 
tanks regulated under Sec. 63.1253, vents on wastewater emission sources 
regulated under Sec. 63.1256, or pieces of equipment regulated under 
Sec. 63.1255.
    Production-indexed HAP consumption factor is the result of dividing 
the annual consumption of total HAP by the annual production rate, per 
process.
    Production-indexed volatile organic compound (VOC) consumption 
factor is the result of dividing the annual consumption of total VOC by 
the annual production rate, per process.
    Publicly owned treatment works (POTW) means any devices and systems 
used in the storage, treatment, recycling, and reclamation of municipal 
sewage or industrial wastes of a liquid nature as defined in section 
212(2)(A) of the Clean Water Act, as amended [33 U.S.C. 
Sec. 1292(2)(A)]. A POTW includes the treatment works, intercepting 
sewers, outfall sewers, sewage collection systems, pumping, power, and 
other equipment. The POTW is defined at 40 CFR 403.3(o).
    Reactor means a device or vessel in which one or more chemicals or 
reactants, other than air, are combined or decomposed in such a way that 
their molecular structures are altered and one or more new organic 
compounds are formed.
    Recovery device, as used in the wastewater provisions, means an 
individual

[[Page 23]]

unit of equipment used for the purpose of recovering chemicals for fuel 
value (i.e., net positive heating value), use, reuse, or for sale for 
fuel value, use or reuse. Examples of equipment that may be recovery 
devices include organic removal devices such as decanters, strippers, or 
thin-film evaporation units. To be a recovery device, a decanter and any 
other equipment based on the operating principle of gravity separation 
must receive only two-phase liquid streams.
    Repaired means that equipment is adjusted, or otherwise altered, to 
eliminate a leak as defined in the applicable sections of Sec. 63.1255.
    Research and development facility means any stationary source whose 
primary purpose is to conduct research and development into new 
processes and products, where such source is operated under the close 
supervision of technically trained personnel, and is not engaged in the 
manufacture of products for commercial sale in commerce, except in a de 
minimis manner.
    Residual means any HAP-containing liquid or solid material that is 
removed from a wastewater stream by a waste management unit or treatment 
process that does not destroy organics (nondestructive unit). Examples 
of residuals from nondestructive waste management units are: the organic 
layer and bottom residue removed by a decanter or organic-water 
separator and the overheads from a steam stripper or air stripper. 
Examples of materials which are not residuals are: silt; mud; leaves; 
bottoms from a steam stripper or air stripper; and sludges, ash, or 
other materials removed from wastewater being treated by destructive 
devices such as biological treatment units and incinerators.
    Safety device means a closure device such as a pressure relief 
valve, frangible disc, fusible plug, or any other type of device which 
functions exclusively to prevent physical damage or permanent 
deformation to a unit or its air emission control equipment by venting 
gases or vapors directly to the atmosphere during unsafe conditions 
resulting from an unplanned, accidental, or emergency event. For the 
purposes of this subpart, a safety device is not used for routine 
venting of gases or vapors from the vapor headspace underneath a cover 
such as during filling of the unit or to adjust the pressure in this 
vapor headspace in response to normal daily diurnal ambient temperature 
fluctuations. A safety device is designed to remain in a closed position 
during normal operations and open only when the internal pressure, or 
another relevant parameter, exceeds the device threshold setting 
applicable to the air emission control equipment as determined by the 
owner or operator based on manufacturer recommendations, applicable 
regulations, fire protection and prevention codes, standard engineering 
codes and practices, or other requirements for the safe handling of 
flammable, combustible, explosive, reactive, or hazardous materials.
    Sampling connection system means an assembly of equipment within a 
process unit used during periods of representative operation to take 
samples of the process fluid. Equipment used to take nonroutine grab 
samples is not considered a sampling connection system.
    Sensor means a device that measures a physical quantity or the 
change in a physical quantity, such as temperature, pressure, flow rate, 
pH, or liquid level.
    Set pressure means the pressure at which a properly operating 
pressure relief device begins to open to relieve atypical process system 
operating pressure.
    Sewer line means a lateral, trunk line, branch line, or other 
conduit including, but not limited to, grates, trenches, etc., used to 
convey wastewater streams or residuals to a downstream waste management 
unit.
    Shutdown means the cessation of operation of a PMPU or an individual 
piece of equipment required or used to comply with this part or for 
emptying and degassing storage tanks. Shutdown occurs for purposes 
including but not limited to: periodic maintenance, replacement of 
equipment, or repair. Shutdown does not apply to routine batch 
operations or the rinsing or washing of equipment in batch operations 
between batches.
    Single-seal system means a floating roof having one continuous seal 
that completely covers the space between

[[Page 24]]

the wall of the storage tank and the edge of the floating roof. This 
seal may be a vapor-mounted, liquid-mounted, or metallic shoe seal.
    Small control device means a control device that controls process 
vents with total emissions of less than 10 tons of HAP per year, before 
control.
    Soluble HAP means a HAP listed in Table 3 of this subpart.
    Startup means the first time a new or reconstructed source begins 
production, or, for new equipment added, including equipment used to 
comply with this subpart, the first time the equipment is put into 
operation, or for the introduction of a new product/process, the first 
time the product or process is run in equipment. As used in 
Sec. 63.1255, startup means the setting in operation of a piece of 
equipment or a control device that is subject to this subpart.
    Storage tank means a tank or other vessel that is used to store 
organic liquids that contain one or more HAP as feedstocks or products 
of a PMPU. The following are not considered storage tanks for the 
purposes of this subpart:
    (1) Vessels permanently attached to motor vehicles such as trucks, 
railcars, barges, or ships;
    (2) Pressure vessels designed to operate in excess of 204.9 
kilopascals and without emissions to the atmosphere;
    (3) Vessels storing organic liquids that contain HAP only as 
impurities;
    (4) Wastewater storage tanks; and
    (5) Process tanks.
    Surface impoundment means a waste management unit which is a natural 
topographic depression, manmade excavation, or diked area formed 
primarily of earthen materials (although it may be lined with manmade 
materials), which is designed to hold an accumulation of liquid wastes 
or waste containing free liquids. A surface impoundment is used for the 
purpose of treating, storing, or disposing of wastewater or residuals, 
and is not an injection well. Examples of surface impoundments are 
equalization, settling, and aeration pits, ponds, and lagoons.
    Total organic compounds (TOC) means those compounds measured 
according to the procedures of Method 18 or Method 25A, 40 CFR part 60, 
appendix A.
    Treatment process means a specific technique that removes or 
destroys the organics in a wastewater or residual stream such as a steam 
stripping unit, thin-film evaporation unit, waste incinerator, 
biological treatment unit, or any other process applied to wastewater 
streams or residuals to comply with Sec. 63.1256. Most treatment 
processes are conducted in tanks. Treatment processes are a subset of 
waste management units.
    Uncontrolled HAP emissions means a gas stream containing HAP which 
has exited the process (or process condenser, if any), but which has not 
yet been introduced into an air pollution control device to reduce the 
mass of HAP in the stream. If the process vent is not routed to an air 
pollution control device, uncontrolled emissions are those HAP emissions 
released to the atmosphere.
    Unit operation means those processing steps that occur within 
distinct equipment that are used, among other things, to prepare 
reactants, facilitate reactions, separate and purify products, and 
recycle materials. Equipment used for these purposes includes but is not 
limited to reactors, distillation columns, extraction columns, 
absorbers, decanters, dryers, condensers, and filtration equipment.
    Vapor-mounted seal means a continuous seal that completely covers 
the annular space between the wall, the storage tank or waste management 
unit and the edge of the floating roof and is mounted such that there is 
a vapor space between the stored liquid and the bottom of the seal.
    Volatile organic compounds (VOC) means those materials defined in 40 
CFR 51.100.
    Waste management unit means the equipment, structure(s),and or 
devices used to convey, store, treat, or dispose of wastewater streams 
or residuals. Examples of waste management units include wastewater 
tanks, air flotation units, surface impoundments, containers, oil-water 
or organic-water separators, individual drain systems, biological 
wastewater treatment units, waste incinerators, and organic removal 
devices such as steam and air stripper units, and thin film evaporation 
units. If such equipment is used

[[Page 25]]

for recovery then it is part of a pharmaceutical process and is not a 
waste management unit.
    Wastewater means any portion of an individual wastewater stream or 
any aggregation of wastewater streams.
    Wastewater stream means water that is discarded from a PMPU through 
a single POD, that contains an annual average concentration of partially 
soluble and/or soluble HAP compounds of at least 5 parts per million by 
weight and a load of at least 0.05 kg/yr, and that is not exempted by 
the provisions of Sec. 63.1256(a)(3). For the purposes of this subpart, 
noncontact cooling water is not considered a wastewater stream. 
Wastewater streams are generated by both process operations and 
maintenance activities.
    Wastewater tank means a stationary waste management unit that is 
designed to contain an accumulation of wastewater or residuals and is 
constructed primarily of nonearthen materials (e.g., wood, concrete, 
steel, plastic) which provide structural support. Wastewater tanks used 
for flow equalization are included in this definition.
    Water seal controls means a seal pot, p-leg trap, or other type of 
trap filled with water (e.g., flooded sewers that maintain water levels 
adequate to prevent air flow through the system) that creates a water 
barrier between the sewer line and the atmosphere. The water level of 
the seal must be maintained in the vertical leg of a drain in order to 
be considered a water seal.



Sec. 63.1252  Standards: General.

    Each owner or operator of any affected source subject to the 
provisions of this subpart shall control HAP emissions to the level 
specified in this section on and after the compliance dates specified in 
Sec. 63.1250(f). Compliance with the emission limits may be demonstrated 
initially through the provisions of Sec. 63.1257 (Test methods and 
compliance procedures) and continuously through the provisions of 
Sec. 63.1258 (Monitoring requirements).
    (a) Opening of a safety device. Opening of a safety device, as 
defined in Sec. 63.1251, is allowed at any time conditions require it to 
do so to avoid unsafe conditions.
    (b) Closed-vent systems. The owner or operator of a closed-vent 
system that contains bypass lines that could divert a vent stream away 
from a control device used to comply with the requirements in 
Secs. 63.1253, 63.1254, and 63.1256 shall comply with the requirements 
of Table 4 to this subpart and paragraph (b)(1) or (2) of this section. 
Equipment such as low leg drains, high point bleeds, analyzer vents, 
open-ended valves or lines, rupture disks and pressure relief valves 
needed for safety purposes are not subject to this paragraph.
    (1) Install, calibrate, maintain, and operate a flow indicator that 
determines whether vent stream flow is present at least once every 15 
minutes. Records shall be maintained as specified in 
Sec. 63.1259(i)(6)(i). The flow indicator shall be installed at the 
entrance to any bypass line that could divert the vent stream away from 
the control device to the atmosphere; or
    (2) Secure the bypass line valve in the closed position with a car 
seal or lock and key type configuration. A visual inspection of the seal 
or closure mechanism shall be performed at least once every month to 
ensure that the valve is maintained in the closed position and the vent 
stream is not diverted through the bypass line. Records shall be 
maintained as specified in Sec. 63.1259(i)(6)(ii).
    (c) Heat exchange systems. Except as provided in paragraph (c)(2) of 
this section, owners and operators of affected sources shall comply with 
the requirements in paragraph (c)(1) of this section for heat exchange 
systems that cool process equipment or materials used in pharmaceutical 
manufacturing operations.
    (1) The heat exchange system shall be treated according to the 
provisions of Sec. 63.104, except that the monitoring frequency shall be 
no less than quarterly.
    (2) For identifying leaking equipment, the owner or operator of heat 
exchange systems on equipment which meet current good manufacturing 
practice (CGMP) requirements of 21 CFR part 211 may elect to use the 
physical integrity of the reactor as the surrogate indicator of heat 
exchange system leaks around the reactor.
    (d) Emissions averaging provisions. Except as specified in 
paragraphs (d)(1)

[[Page 26]]

through (5) of this section, owners or operators of storage tanks or 
processes subject to the provisions of Secs. 63.1253 and 63.1254 may 
choose to comply by using emissions averaging requirements specified in 
Sec. 63.1257(g) or (h) for any storage tank or process.
    (1) A State may prohibit averaging of HAP emissions and require the 
owner or operator of an existing source to comply with the provisions in 
Secs. 63.1253 and 63.1254.
    (2) Only emission sources subject to the requirements of 
Sec. 63.1253(b)(1) and (c)(1) or Sec. 63.1254(a)(2), (a)(3)(ii)(A) or 
(a)(3)(iii) may be included in any averaging group.
    (3) Processes which have been permanently shutdown or storage tanks 
permanently taken out of HAP service may not be included in any 
averaging group.
    (4) Processes and storage tanks already controlled on or before 
November 15, 1990 may not be included in an emissions averaging group, 
except where the level of control is increased after November 15, 1990. 
In these cases, the uncontrolled emissions shall be the controlled 
emissions as calculated on November 15, 1990 for the purpose of 
determining the uncontrolled emissions as specified in Sec. 63.1257(g) 
and (h).
    (5) Emission points controlled to comply with a State or Federal 
rule other than this subpart may not be included in an emission 
averaging group, unless the level of control has been increased after 
November 15, 1990 above what is required by the other State or Federal 
rule. Only the control above what is required by the other State or 
Federal rule will be credited. However, if an emission point has been 
used to generate emissions averaging credit in an approved emissions 
average, and the point is subsequently made subject to a State or 
Federal rule other than this subpart, the point can continue to generate 
emissions averaging credit for the purpose of complying with the 
previously approved average.
    (6) Not more than 20 processes subject to Sec. 63.1254(a)(2)(i), 20 
storage tanks subject to Sec. 63.1253(b)(1), and 20 storage tanks 
subject to Sec. 63.1253(c)(1)(i) at an affected source may be included 
in an emissions averaging group.
    (7) Compliance with the emissions standards in Sec. 63.1253 shall be 
satisfied when the annual percent reduction efficiency is greater than 
or equal to 90 percent for those tanks meeting the requirements of 
Sec. 63.1253(a)(1) and 95 percent for those tanks meeting the 
requirements of Sec. 63.1253(a)(2), as demonstrated using the test 
methods and compliance procedures specified in Sec. 63.1257(g).
    (8) Compliance with the emissions standards in Sec. 63.1254(a)(2) 
shall be satisfied when the annual percent reduction efficiency is 
greater than or equal to 93 percent, as demonstrated using the test 
methods and compliance procedures specified in Sec. 63.1257(h).
    (e) Pollution prevention alternative. Except as provided in 
paragraph (e)(1) of this section, owners and operators may choose to 
meet the pollution prevention alternative requirement specified in 
either paragraph (e)(2) or (3) of this section for any PMPU, in lieu of 
the requirements specified in Secs. 63.1253, 63.1254, 63.1255, and 
63.1256. Compliance with paragraphs (e)(2) and (3) of this section shall 
be demonstrated through the procedures in Sec. 63.1257(f).
    (1) The HAP that are generated in the PMPU that are not part of the 
production-indexed consumption factor must be controlled according to 
the requirements of Secs. 63.1253, 63.1254, 63.1255, and 63.1256. The 
HAP that are generated as a result of combustion control of emissions 
must be controlled according to the requirements of paragraph (g) of 
this section.
    (2) The production-indexed HAP consumption factor (kg HAP consumed/
kg produced) shall be reduced by at least 75 percent from a 3 year 
average baseline established no earlier than the 1987 calendar year, or 
for the time period from startup of the process until the present in 
which the PMPU was operational and data are available, whichever is the 
lesser time period. If a time period less than 3 years is used to set 
the baseline, the data must represent at least 1 year's worth of data. 
For any reduction in the HAP factor achieved by reducing a HAP that is 
also a VOC, an equivalent reduction in the VOC factor is also required. 
For any reduction in the HAP factor that is achieved

[[Page 27]]

by reducing a HAP that is not a VOC, the VOC factor may not be 
increased.
    (3) Both requirements specified in paragraphs (e)(3)(i) and (ii) of 
this section are met.
    (i) The production-indexed HAP consumption factor (kg HAP consumed/
kg produced) shall be reduced by at least 50 percent from a 3-year 
average baseline established no earlier than the 1987 calendar year, or 
for the time period from startup of the process until the present in 
which the PMPU was operational and data are available, whichever is 
less. If a time period less than 3 years is used to set the baseline, 
the data must represent at least 1 year's worth of data. For any 
reduction in the HAP factor achieved by reducing a HAP that is also a 
VOC, an equivalent reduction in the VOC factor is also required. For any 
reduction in the HAP factor that is achieved by reducing a HAP that is 
not a VOC, the VOC factor may not be increased.
    (ii) The total PMPU HAP emissions shall be reduced by an amount, in 
kg/yr, that, when divided by the annual production rate, in kg/yr, and 
added to the reduction of the production-indexed HAP consumption factor, 
in kg/kg, yields a value of at least 75 percent of the average baseline 
HAP production-indexed consumption factor established according to 
paragraph (e)(3)(i) of this section according to the equation provided 
in Sec. 63.1257(f)(2)(ii)(A). The total PMPU VOC emissions shall be 
reduced by an amount calculated according to the equation provided in 
Sec. 63.1257(f)(2)(ii)(B). The annual reduction in HAP and VOC air 
emissions must be due to the use of the following control devices:
    (A) Combustion control devices such as incinerators, flares or 
process heaters.
    (B) Control devices such as condensers and carbon adsorbers whose 
recovered product is destroyed or shipped offsite for destruction.
    (C) Any control device that does not ultimately allow for recycling 
of material back to the PMPU.
    (D) Any control device for which the owner or operator can 
demonstrate that the use of the device in controlling HAP emissions will 
have no effect on the production-indexed consumption factor for the 
PMPU.
    (f) Control requirements for certain liquid streams in open systems 
within a PMPU. (1) The owner or operator shall comply with the 
provisions of Table 5 of this subpart, for each item of equipment 
meeting all the criteria specified in paragraphs (f)(2) through (4) and 
either paragraph (f)(5)(i) or (ii) of this section.
    (2) The item of equipment is of a type identified in Table 5 of this 
subpart;
    (3) The item of equipment is part of a PMPU, as defined in 
Sec. 63.1251;
    (4) The item of equipment is controlled less stringently than in 
Table 5 of this subpart and the item of equipment is not otherwise 
exempt from controls by the provisions of this subpart or subpart A of 
this part; and
    (5) The item of equipment:
    (i) Is a drain, drain hub, manhole, lift station, trench, pipe, or 
oil/water separator that conveys water with an annual average 
concentration greater than or equal to 1,300 parts per million by weight 
(ppmw) of partially soluble HAP compounds; or an annual average 
concentration greater than or equal to 5,200 ppmw of partially soluble 
and/or soluble HAP compounds. The annual average concentration shall be 
determined according to the procedures in Sec. 63.1257(e)(1)(ii).
    (ii) Is a tank that receives one or more streams that contain water 
with an annual average concentration greater than or equal to 1,300 ppmw 
of partially soluble HAP compounds, or greater than or equal to 5,200 
ppmw of total partially soluble and/or soluble HAP compounds. The owner 
or operator of the source shall determine the average concentration of 
the stream at the inlet to the tank and according to the procedures in 
Sec. 63.1257(e)(1)(ii).
    (g) Control requirements for halogenated vent streams that are 
controlled by combustion devices. If a combustion device is used to 
comply with the provisions of Secs. 63.1253 (storage tanks), 63.1254 
(process vents), 63.1256(h) (wastewater vent streams) for a halogenated 
vent stream, then the vent stream shall be ducted to a halogen reduction 
device such as, but not limited to, a scrubber, before it is discharged

[[Page 28]]

to the atmosphere. The halogen reduction device must reduce emissions by 
the amounts specified in either paragraph (g)(1) or (2) of this section.
    (1) A halogen reduction device after the combustion control device 
must reduce overall emissions of hydrogen halides and halogens, as 
defined in Sec. 63.1251, by 95 percent or to a concentration less than 
or equal to 20 ppmv.
    (2) A halogen reduction device located before the combustion control 
device must reduce the halogen atom content of the vent stream to a 
concentration less than or equal to 20 ppmv.



Sec. 63.1253  Standards: Storage tanks.

    (a) Except as provided in paragraphs (d) and (e) of this section, 
the owner or operator of a storage tank meeting the criteria of 
paragraph (a)(1) of this section is subject to the requirements of 
paragraph (b) of this section. Except as provided in paragraphs (d) and 
(e) of this section, the owner or operator of a storage tank meeting the 
criteria of paragraph (a)(2) of this section is subject to the 
requirements of paragraph (c) of this section. Compliance with the 
provisions of paragraphs (b) and (c) of this section is demonstrated 
using the initial compliance procedures in Sec. 63.1257(c) and the 
monitoring requirements in Sec. 63.1258.
    (1) A storage tank with a design capacity greater than or equal to 
38 m3 (10,000 gallons [gal]) but less than 75 m3 
(20,000 gal), and storing a liquid for which the maximum true vapor 
pressure of total HAP is greater than or equal to 13.1 kPa (1.9 psia).
    (2) A storage tank with a design capacity greater than or equal to 
75 m3 (20,000 gal) storing a liquid for which the maximum 
true vapor pressure of total HAP is greater than or equal to 13.1 kPa 
(1.9 psia).
    (b) The owner or operator of a storage tank shall equip the affected 
storage tank with either a fixed roof with internal floating roof, an 
external floating roof, an external floating roof converted to an 
internal floating roof, or a closed-vent system meeting the conditions 
of Sec. 63.1252(b) with a control device that meets any of the following 
conditions:
    (1) Reduces inlet emissions of total HAP by 90 percent by weight or 
greater;
    (2) Is an enclosed combustion device that provides a minimum 
residence time of 0.5 seconds at a minimum temperature of 760 deg. C;
    (3) Is a flare that meets the requirements of Sec. 63.11(b); or
    (4) Is a control device specified in Sec. 63.1257(a)(4).
    (c) The owner or operator of a storage tank shall equip the affected 
storage tank with either a fixed roof with internal floating roof, an 
external floating roof, an external floating roof converted to an 
internal floating roof, or a closed-vent system meeting the conditions 
of Sec. 63.1252(b) with a control device that meets any of the following 
conditions:
    (1) Reduces inlet emissions of total HAP as specified in paragraph 
(c)(1) (i) or (ii) of this section:
    (i) By 95 percent by weight or greater; or (ii) If the owner or 
operator can demonstrate that a control device installed on a storage 
tank on or before April 2, 1997 is designed to reduce inlet emissions of 
total HAP by greater than or equal to 90 percent by weight but less than 
95 percent by weight, then the control device is required to be operated 
to reduce inlet emissions of total HAP by 90 percent or greater.
    (2) Is an enclosed combustion device that provides a minimum 
residence time of 0.5 seconds at a minimum temperature of 760 deg. C;
    (3) Is a flare that meets the requirements of Sec. 63.11(b); or
    (4) Is a control device specified in Sec. 63.1257(a)(4).
    (d) As an alternative standard, the owner or operator of an existing 
or new affected source may comply with the storage tank standards by 
routing storage tank vents to a control device achieving an outlet TOC 
concentration, as calibrated on methane or the predominant HAP, of 20 
ppmv or less, and an outlet concentration of hydrogen halides and 
halogens of 20 ppmv or less. Compliance with the outlet concentrations 
shall be determined by the initial compliance procedures of 
Sec. 63.1257(c)(4) and the continuous emission monitoring requirements 
of Sec. 63.1258(b)(5).

[[Page 29]]

    (e) Planned routine maintenance. The specifications and requirements 
in paragraphs (b) through (d) of this section for control devices do not 
apply during periods of planned routine maintenance. Periods of planned 
routine maintenance of the control devices, during which the control 
device does not meet the specifications of paragraphs (b) through (d) of 
this section, as applicable, shall not exceed 240 hours per year.



Sec. 63.1254  Standards: Process vents.

    (a) Existing sources. Except as provided in paragraph (c) of this 
section, the owner or operator of an existing affected source must 
control the collection of all gas streams originating from processes 
subject to this standard so as to comply with the requirements in 
paragraph (a)(1) or the requirements of paragraphs (a)(2) and (a)(3) of 
this section. If any vent within a process meets the criteria of 
paragraph (a)(3)(i) of this section, the owner or operator must comply 
with the provisions in paragraphs (a)(2) and (a)(3) for that process. 
The requirements of paragraphs (a) (1) and (2) of this section apply to 
all process vents within a process, as a group, and do not apply to 
individual vents. An owner or operator may switch from compliance with 
paragraph (a)(1) of this section to compliance with paragraphs (a) (2) 
and (3) of this section only after at least 1 year of operation in 
compliance with paragraph (a)(1) of this section. An owner or operator 
may switch from compliance with paragraphs (a) (2) and (3) of this 
section to compliance with paragraph (a)(1) of this section at any time. 
Notification of such a change in the compliance method shall be reported 
according to the procedures in Sec. 63.1260(h) of this subpart. 
Compliance with the required emission limits or reductions in paragraphs 
(a) (1) through (3) of this section may be demonstrated using the 
initial compliance procedures described in Sec. 63.1257(d) and the 
monitoring requirements described in Sec. 63.1258.
    (1) Except for processes with a vent that meets the conditions in 
paragraph (a)(3)(i) of this section, actual HAP emissions shall not 
exceed 900 kilograms (kg) per year [2,000 pounds per year] from the sum 
of all process vents within a process.
    (i) Except as provided in paragraph (a)(1)(ii) of this section, the 
owner or operator is limited to 7 processes in any 365-day period that 
can be selected to comply with paragraph (a)(1) of this section.
    (ii) The owner or operator may exclude processes with less than 100 
lb/yr HAP, on an uncontrolled basis, from the 7-process limit described 
in paragraph (a)(1)(i) of this section.
    (2) Uncontrolled HAP emissions from the sum of all process vents 
within a process that do not meet the conditions in paragraph (a)(3)(i) 
of this section or are not controlled according to any of the 
requirements of paragraphs (a)(2)(i), (a)(2)(ii), (a)(2)(iii), or (c) of 
this section shall be reduced by 93 percent or greater by weight.
    (i) To outlet concentrations less than or equal to 20 ppmv as TOC 
and less than or equal to 20 ppmv as hydrogen halides and halogens;
    (ii) By a flare that meets the requirements of Sec. 63.11(b); or 
(iii) By a control device specified in Sec. 63.1257(a)(4).
    (3) Except as provided in paragraph (a)(3)(iii) of this section, 
uncontrolled HAP emissions from each process vent that meets the 
conditions in paragraph (a)(3)(i) of this section shall be reduced as 
specified in paragraph (a)(3)(ii) of this section.
    (i) Uncontrolled HAP emissions from a process vent shall be reduced 
as specified in paragraph (a)(3)(ii) if the vent meets either of the 
criteria described in paragraph (a)(3)(i) (A) or (B) of this section:
    (A) The flow-weighted average flowrate calculated using Equation 1 
of this subpart is less than or equal to the flowrate calculated using 
Equation 2 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.000

[GRAPHIC] [TIFF OMITTED] TR21SE98.001

Where:


[[Page 30]]


FRa = flow-weighted average flowrate for the vent, scfm
Di = duration of each emission event, min
FRi = flowrate of each emission event, scfm
n = number of emission events
FR = flowrate, scfm
HL = annual uncontrolled HAP emissions, lb/yr, as defined in 
Sec. 63.1251

    (B) As an alternative to the criteria described in paragraph 
(a)(3)(i)(A) of this section, uncontrolled HAP emissions from a process 
vent shall be reduced or controlled as specified in paragraph (a)(3)(ii) 
of this section if the process vent meets the criteria specified in 
paragraphs (a)(3)(i)(B)(1) and (2) of this section or the criteria 
specified in paragraphs (a)(3)(i)(B)(1) and (3) of this section.
    (1) Uncontrolled HAP emissions from the process vent exceed 25 tons 
per year.
    (2) The flow-weighted average flowrate for the vent, as calculated 
in Equation 1 of this section, is less than or equal to 100 scfm.
    (3) The flow weighted average is greater than 100 scfm and less than 
or equal to the flowrate calculated using Equation 2 of this section.
    (ii) Uncontrolled HAP emissions shall be reduced:
    (A) By 98 percent by weight or greater; or
    (B) To outlet concentrations less than or equal to 20 ppmv as TOC 
and less than or equal to 20 ppmv as hydrogen halides and halogens; or
    (C) By a flare that meets the requirements of Sec. 63.11(b); or
    (D) By a control device specified in Sec. 63.1257(a)(4).
    (iii) If the owner or operator can demonstrate that a control 
device, installed on a process vent that meets the conditions of 
paragraph (a)(3)(i) of this section on or before April 2, 1997, was 
designed to reduce uncontrolled HAP emissions of total HAP by greater 
than or equal to 93 percent by weight, but less than 98 percent by 
weight, then the control device is required to be operated to reduce 
inlet emissions of total HAP by 93 percent by weight or greater.
    (b) New sources. Uncontrolled HAP emissions from the sum of all 
process vents within a process at a new affected source that are not 
controlled according to any of the requirements of paragraphs (b)(1), 
(2), or (3) of this section or paragraph (c) of this section shall be 
reduced by 98 percent or greater by weight if the uncontrolled HAP 
emissions from the sum of all process vents within a process is greater 
than 180 kg/yr (400 lb/yr). Compliance with the required emission limit 
or reduction is demonstrated using the initial compliance procedures in 
Sec. 63.1257(d) and the monitoring requirements described in 
Sec. 63.1258.
    (1) To outlet concentrations less than or equal to 20 ppmv as TOC 
and less than or equal to 20 ppmv as hydrogen halides and halogens;
    (2) By a flare that meets the requirements of Sec. 63.11(b); or
    (3) By a control device specified in Sec. 63.1257(a)(4).
    (c) As an alternative standard, the owner or operator of an existing 
or new affected source may comply with the process vent standards by 
routing all vents from a process to a control device achieving an outlet 
TOC concentration, as calibrated on methane or the predominant HAP, of 
20 ppmv or less, and an outlet concentration of hydrogen halides and 
halogens of 20 ppmv or less. Any process vents within a process that are 
not routed to this control device must be controlled in accordance with 
the provisions of paragraphs (a)(2),(a)(3), and (b) of this section, as 
applicable. Compliance with the outlet concentrations shall be 
determined by the initial compliance procedures described in 
Sec. 63.1257(d)(1)(iv) and the continuous emission monitoring 
requirements described in Sec. 63.1258(b)(5).



Sec. 63.1255  Standards: Equipment leaks.

    (a) General Equipment Leak Requirements. (1) The provisions of this 
section apply to pumps, compressors, agitators, pressure relief devices, 
sampling connection systems, open-ended valves or lines, valves, 
connectors, instrumentation systems, control devices, and closed-vent 
systems required by this subpart that are intended to operate in organic 
hazardous air pollutant service 300 hours or more during

[[Page 31]]

the calendar year within a source subject to the provisions of this 
subpart.
    (2) Consistency with other regulations. After the compliance date 
for a process, equipment subject to both this section and either of the 
following will be required to comply only with the provisions of this 
subpart:
    (i) 40 CFR part 60.
    (ii) 40 CFR part 61.
    (3) [Reserved]
    (4) The provisions in Sec. 63.1(a)(3) of subpart A of this part do 
not alter the provisions in paragraph (a)(2) of this section.
    (5) Lines and equipment not containing process fluids are not 
subject to the provisions of this section. Utilities, and other 
nonprocess lines, such as heating and cooling systems which do not 
combine their materials with those in the processes they serve, are not 
considered to be part of a process.
    (6) The provisions of this section do not apply to bench-scale 
processes, regardless of whether the processes are located at the same 
plant site as a process subject to the provisions of this subpart.
    (7) Each piece of equipment to which this section applies shall be 
identified such that it can be distinguished readily from equipment that 
is not subject to this section. Identification of the equipment does not 
require physical tagging of the equipment. For example, the equipment 
may be identified on a plant site plan, in log entries, or by 
designation of process boundaries by some form of weatherproof 
identification. If changes are made to the affected source subject to 
the leak detection requirements, equipment identification for each type 
of component shall be updated, if needed, within 15 calendar days of the 
end of each monitoring period for that component.
    (8) Equipment that is in vacuum service is excluded from the 
requirements of this section.
    (9) Equipment that is in organic HAP service, but is in such service 
less than 300 hours per calendar year, is excluded from the requirements 
of this section if it is identified as required in paragraph (g)(9) of 
this section.
    (10) When each leak is detected by visual, audible, or olfactory 
means, or by monitoring as described in Sec. 63.180(b) or (c), the 
following requirements apply:
    (i) A weatherproof and readily visible identification, marked with 
the equipment identification number, shall be attached to the leaking 
equipment.
    (ii) The identification on a valve or connector in light liquid or 
gas/vapor service may be removed after it has been monitored as 
specified in paragraph (e)(7)(iii) of this section and Sec. 63.174(e), 
and no leak has been detected during the follow-up monitoring.
    (iii) The identification on equipment, except on a valve or 
connector in light liquid or gas/vapor service, may be removed after it 
has been repaired.
    (b) References. (1) The owner or operator of a source subject to 
this section shall comply with the following sections of subpart H, 
except for Sec. 63.160, Sec. 63.161, Sec. 63.162, Sec. 63.163, 
Sec. 63.167, Sec. 63.168, Sec. 63.170, Sec. 63.171, Sec. 63.172, 
Sec. 63.173, Sec. 63.181, and Sec. 63.182 of this subpart. In place of 
Sec. 63.160 and Sec. 63.162, the owner or operator shall comply with 
paragraph (a) of this section; in place of Sec. 63.161, the owner or 
operator shall comply with Sec. 63.1251 of this subpart; in place of 
Sec. 63.163 and Sec. 63.173, the owner or operator shall comply with 
paragraph (c) of this section; in place of Sec. 63.167, the owner or 
operator shall comply with paragraph (d) of this section; in place of 
Sec. 63.168, the owner or operator shall comply with paragraph (e) of 
this section; in place of Sec. 63.170, the owner or operator shall 
comply with Sec. 63.1254 of this subpart; in place of Sec. 63.171, the 
owner or operator shall comply with paragraph (b)(1)(v) of this section; 
in place of Sec. 63.172, the owner or operator shall comply with 
paragraph (b)(1)(vi) of this section; in place of Sec. 63.181, the owner 
or operator shall comply with paragraph (g) of this section; in place of 
Sec. 63.182, the owner or operator shall comply with paragraph (h) of 
this section. The term ``process unit'' as used in subpart H shall be 
considered to be defined the same as ``group of processes'' for sources 
subject to this subpart GGG.
    (i) Section 63.164, Compressors;
    (ii) Section 63.165, Pressure relief devices in gas/vapor service;
    (iii) Section 63.166, Sampling connection systems;

[[Page 32]]

    (iv) Section 63.169, Pumps, valves, connectors, and agitators in 
heavy liquid service; instrumentation systems; and pressure relief 
devices in liquid service;
    (v) Section 63.171, Delay of repair, shall apply except 
Sec. 63.171(a) shall not apply. Instead, delay of repair of equipment 
for which leaks have been detected is allowed if one of the following 
conditions exist:
    (A) The repair is technically infeasible without a process shutdown. 
Repair of this equipment shall occur by the end of the next scheduled 
process shutdown.
    (B) The owner or operator determines that repair personnel would be 
exposed to an immediate danger if attempting to repair without a process 
shutdown. Repair of this equipment shall occur by the end of the next 
scheduled process shutdown.
    (vi) Section 63.172, Closed-vent systems and control devices, for 
closed-vent systems used to comply with this subpart, and for control 
devices used to comply with this section only, except
    (A) Sections 63.172(k) and (l) shall not apply. In place of 
Sec. 63.172(k) and (l), the owner or operator shall comply with 
paragraph (f) of this section.
    (B) Owners or operators may, instead of complying with the 
provisions of Sec. 63.172(f), design a closed-vent system to operate at 
a pressure below atmospheric pressure. The system shall be equipped with 
at least one pressure gage or other pressure measurement device that can 
be read from a readily accessible location to verify that negative 
pressure is being maintained in the closed-vent system when the 
associated control device is operating.
    (vii) Section 63.174, Connectors, except:
    (A) Sections 63.174(f) and (g) shall not apply. In place of 
Sec. 63.174(f) and (g), the owner or operator shall comply with 
paragraph (f) of this section.
    (B) Days that the connectors are not in organic HAP service shall 
not be considered part of the 3 month period in Sec. 63.174(e).
    (C) Section 63.174(b)(3)(ii) shall not apply. Instead, if the 
percent leaking connectors in the process unit was less than 0.5 
percent, but equal to or greater than 0.25 percent, during the last 
required monitoring period, monitoring shall be performed once every 4 
years. An owner or operator may comply with the requirements of this 
paragraph by monitoring at least 40 percent of the connectors in the 
first 2 years and the remainder of the connectors within the next 2 
years. The percent leaking connectors will be calculated for the total 
of all monitoring performed during the 4 year period.
    (D) Section 63.174(b)(3)(iv) shall not apply. Instead, the owner or 
operator shall increase the monitoring frequency to once every 2 years 
for the next monitoring period if leaking connectors comprise at least 
0.5 percent but less than 1.0 percent of the connectors monitored within 
the 4 years specified in paragraph (b)(1)(vii)(C) of this section or the 
first 4 years specified in Sec. 63.174(b)(3)(iii). At the end of that 2 
year monitoring period, the owner or operator shall monitor once per 
year while the percent leaking connectors is greater than or equal to 
0.5 percent; if the percent leaking connectors is less than 0.5 percent, 
the owner or operator may return to monitoring once every 4 years or may 
monitor in accordance with Sec. 63.174(b)(3)(iii), if appropriate.
    (E) Section 63.174(b)(3)(v) shall not apply. Instead, if an owner or 
operator complying with the requirements of paragraph (b)(1)(vii)(C) and 
(D) of this section or Sec. 63.174 (b)(3)(iii) for a group of processes 
determines that 1 percent or greater of the connectors are leaking, the 
owner or operator shall increase the monitoring frequency to one time 
per year. The owner or operator may again elect to use the provisions of 
paragraphs (b)(1)(vii)(C) or (D) of this section after a monitoring 
period in which less than 0.5 percent of the connectors are determined 
to be leaking.
    (F) Section 63.174(b)(3)(iii) shall not apply. Instead, monitoring 
shall be required once every 8 years, if the percent leaking connectors 
in the process unit was less than 0.25 percent during the last required 
monitoring period. An owner or operator shall monitor at least 50 
percent of the connectors in the first 4 years and the remainder of the 
connectors within the next 4 years. If the percent leaking connectors in 
the first 4 years is equal to or greater

[[Page 33]]

than 0.35 percent, the monitoring program shall revert at that time to 
the appropriate monitoring frequency specified in paragraphs 
(b)(1)(vii)(C), (D), or (E) of this section.
    (viii) Section 63.177, Alternative means of emission limitation: 
General;
    (ix) Section 63.178, Alternative means of emission limitation: Batch 
processes, except that Sec. 63.178(b), requirements for pressure 
testing, shall apply to all processes, not just batch processes;
    (x) Section 63.179, Alternative means of emission limitation: 
Enclosed-vented process units;
    (xi) Section 63.180, Test methods and procedures, except 
Sec. 63.180(b)(4)(ii)(A) through (C) shall not apply. Instead 
calibration gases shall be a mixture of methane and air at a 
concentration of approximately, but less than, 10,000 parts per million 
methane for agitators; 2,000 parts per million for pumps; and 500 parts 
per million for all other equipment, except as provided in section 
63.180(b)(4)(iii).
    (2) [Reserved]
    (c) Standards for Pumps in Light Liquid Service and Agitators in 
Gas/Vapor Service and in Light Liquid Service. (1) The provisions of 
this section apply to each pump that is in light organic HAP liquid 
service, and to each agitator in organic HAP gas/vapor service or in 
light organic HAP liquid service.
    (2)(i) Monitoring. Each pump and agitator subject to this section 
shall be monitored quarterly to detect leaks by the method specified in 
Sec. 63.180(b) of subpart H, except as provided in Sec. 63.177 of 
subpart H, paragraph (f) of this section, and paragraphs (c)(5) through 
(c)(9) of this section.
    (ii) Leak definition. The instrument reading, as determined by the 
method as specified in Sec. 63.180(b), that defines a leak is:
    (A) For agitators, an instrument reading of 10,000 parts per million 
or greater.
    (B) For pumps, an instrument reading of 2,000 parts per million or 
greater.
    (iii) Visual Inspections. Each pump and agitator shall be checked by 
visual inspection each calendar week for indications of liquids dripping 
from the pump or agitator seal. If there are indications of liquids 
dripping from the seal, a leak is detected.
    (3) Repair provisions. (i) When a leak is detected, it shall be 
repaired as soon as practicable, but not later than 15 calendar days 
after it is detected, except as provided in paragraph (b)(1)(v) of this 
section.
    (ii) A first attempt at repair shall be made no later than 5 
calendar days after the leak is detected. First attempts at repair 
include, but are not limited to, the following practices where 
practicable:
    (A) Tightening of packing gland nuts.
    (B) Ensuring that the seal flush is operating at design pressure and 
temperature.
    (4) Calculation of percent leakers. (i) The owner or operator shall 
decide no later than the end of the first monitoring period what groups 
of processes will be developed. Once the owner or operator has decided, 
all subsequent percent calculations shall be made on the same basis.
    (ii) If, calculated on a 1 year rolling average, the greater of 
either 10 percent or three of the pumps in a group of processes leak, 
the owner or operator shall monitor each pump once per month.
    (iii) The number of pumps in a group of processes shall be the sum 
of all the pumps in organic HAP service, except that pumps found leaking 
in a continuous process within 1 quarter after startup of the pump shall 
not count in the percent leaking pumps calculation for that one 
monitoring period only.
    (iv) Percent leaking pumps shall be determined by the following 
Equation 3:

%PL = [(PL--PS)/(PT--
PS)]  x  100 (Eq. 3)

Where:
%PL = percent leaking pumps
PL = number of pumps found leaking as determined through 
quarterly monitoring as required in paragraphs (c)(2)(i) and (c)(2)(ii) 
of this section.
PT = total pumps in organic HAP service, including those 
meeting the criteria in paragraphs (c)(5) and (c)(6) of this section
PS = number of pumps in a continuous process leaking within 1 quarter of 
startup during the current monitoring period


[[Page 34]]


    (5) Exemptions. Each pump or agitator equipped with a dual 
mechanical seal system that includes a barrier fluid system is exempt 
from the requirements of paragraphs (c)(1) through (c)(4)(iii) of this 
section, provided the following requirements are met:
    (i) Each dual mechanical seal system is:
    (A) Operated with the barrier fluid at a pressure that is at all 
times greater than the pump/agitator stuffing box pressure; or
    (B) Equipped with a barrier fluid degassing reservoir that is 
connected by a closed-vent system to a control device that complies with 
the requirements of paragraph (b)(1)(vi) of this section; or
    (C) Equipped with a closed-loop system that purges the barrier fluid 
into a process stream.
    (ii) The barrier fluid is not in light liquid service.
    (iii) Each barrier fluid system is equipped with a sensor that will 
detect failure of the seal system, the barrier fluid system, or both.
    (iv) Each pump/agitator is checked by visual inspection each 
calendar week for indications of liquids dripping from the pump/agitator 
seal.
    (A) If there are indications of liquids dripping from the pump/
agitator seal at the time of the weekly inspection, the pump/agitator 
shall be monitored as specified in Sec. 63.180(b) to determine if there 
is a leak of organic HAP in the barrier fluid.
    (B) If an instrument reading of 2,000 parts per million or greater 
is measured for pumps, or 10,000 parts per million or greater is 
measured for agitators, a leak is detected.
    (v) Each sensor as described in paragraph (c)(5)(iii) of this 
section is observed daily or is equipped with an alarm unless the pump 
is located within the boundary of an unmanned plant site.
    (vi)(A) The owner or operator determines, based on design 
considerations and operating experience, criteria applicable to the 
presence and frequency of drips and to the sensor that indicate failure 
of the seal system, the barrier fluid system, or both.
    (B) If indications of liquids dripping from the pump/agitator seal 
exceed the criteria established in paragraph (c)(5)(vi)(A) of this 
section, or if, based on the criteria established in paragraph 
(c)(5)(vi)(A) of this section, the sensor indicates failure of the seal 
system, the barrier fluid system, or both, a leak is detected.
    (C) When a leak is detected, it shall be repaired as soon as 
practicable, but not later than 15 calendar days after it is detected, 
except as provided in paragraph (b)(1)(v) of this section.
    (D) A first attempt at repair shall be made no later than 5 calendar 
days after each leak is detected.
    (6) Any pump/agitator that is designed with no externally actuated 
shaft penetrating the pump/agitator housing is exempt from the 
requirements of paragraphs (c)(1) through (c)(4) of this section, except 
for the requirements of paragraph (c)(2)(iii) and, for pumps, paragraph 
(c)(4)(iv).
    (7) Any pump/agitator equipped with a closed-vent system capable of 
capturing and transporting any leakage from the seal or seals back to 
the process or to a control device that complies with the requirements 
of paragraph (b)(1)(vi) of this section is exempt from the requirements 
of paragraphs (c)(2) through (c)(5) of this section.
    (8) Any pump/agitator that is located within the boundary of an 
unmanned plant site is exempt from the weekly visual inspection 
requirement of paragraphs (c)(2)(iii) and (c)(5)(iv) of this section, 
and the daily requirements of paragraph (c)(5)(v) of this section, 
provided that each pump/agitator is visually inspected as often as 
practicable and at least monthly.
    (9) If more than 90 percent of the pumps in a group of processes 
meet the criteria in either paragraph (c)(5) or (c)(6) of this section, 
the process is exempt from the requirements of paragraph (c)(4) of this 
section.
    (d) Standards: Open-Ended Valves or Lines. (1)(i) Each open-ended 
valve or line shall be equipped with a cap, blind flange, plug, or a 
second valve, except as provided in Sec. 63.177 and paragraphs (d)(4) 
through (6) of this section.
    (ii) The cap, blind flange, plug, or second valve shall seal the 
open end at all times except during operations requiring process fluid 
flow through the open-ended valve or line, or during

[[Page 35]]

maintenance or repair. The cap, blind flange, plug, or second valve 
shall be in place within 1 hour of cessation of operations requiring 
process fluid flow through the open-ended valve or line, or within 1 
hour of cessation of maintenance or repair.
    (2) Each open-ended valve or line equipped with a second valve shall 
be operated in a manner such that the valve on the process fluid end is 
closed before the second valve is closed.
    (3) When a double block and bleed system is being used, the bleed 
valve or line may remain open during operations that require venting the 
line between the block valves but shall comply with paragraph (d)(1) of 
this section at all other times.
    (4) Open-ended valves or lines in an emergency shutdown system which 
are designed to open automatically in the event of a process upset are 
exempt from the requirements of paragraphs (d)(1) through (d)(3) of this 
section.
    (5) Open-ended valves or lines containing materials which would 
autocatalytically polymerize are exempt from the requirements of 
paragraphs (d)(1) through (d)(3) of this section.
    (6) Open-ended valves or lines containing materials which could 
cause an explosion, serious overpressure, or other safety hazard if 
capped or equipped with a double block and bleed system as specified in 
paragraphs (d)(1) through (d)(3) of this section are exempt from the 
requirements of paragraphs (d)(1) through (d)(3) of this section.
    (e) Standards: Valves in Gas/Vapor Service and in Light Liquid 
Service. (1) The provisions of this section apply to valves that are 
either in gas organic HAP service or in light liquid organic HAP 
service.
    (2) For existing and new affected sources, all valves subject to 
this section shall be monitored, except as provided in paragraph (f) of 
this section and in Sec. 63.177, by no later than 1 year after the 
compliance date.
    (3) Monitoring. The owner or operator of a source subject to this 
section shall monitor all valves, except as provided in paragraph (f) of 
this section and in Sec. 63.177, at the intervals specified in paragraph 
(e)(4) of this section and shall comply with all other provisions of 
this section, except as provided in paragraph (b)(1)(v) of this section, 
Sec. 63.178, and Sec. 63.179.
    (i) The valves shall be monitored to detect leaks by the method 
specified in Sec. 63.180(b).
    (ii) An instrument reading of 500 parts per million or greater 
defines a leak.
    (4) Subsequent monitoring frequencies. After conducting the initial 
survey required in paragraph (e)(2) of this section, the owner or 
operator shall monitor valves for leaks at the intervals specified 
below:
    (i) For a group of processes with 2 percent or greater leaking 
valves, calculated according to paragraph (e)(6) of this section, the 
owner or operator shall monitor each valve once per month, except as 
specified in paragraph (e)(9) of this section.
    (ii) For a group of processes with less than 2 percent leaking 
valves, the owner or operator shall monitor each valve once each 
quarter, except as provided in paragraphs (e)(4)(iii) through (e)(4)(v) 
of this section.
    (iii) For a group of processes with less than 1 percent leaking 
valves, the owner or operator may elect to monitor each valve once every 
2 quarters.
    (iv) For a group of processes with less than 0.5 percent leaking 
valves, the owner or operator may elect to monitor each valve once every 
4 quarters.
    (v) For a group of processes with less than 0.25 percent leaking 
valves, the owner or operator may elect to monitor each valve once every 
2 years.
    (5) Calculation of percent leakers. For a group of processes to 
which this subpart applies, an owner or operator may choose to subdivide 
the valves in the applicable group of processes and apply the provisions 
of paragraph (e)(4) of this section to each subgroup. If the owner or 
operator elects to subdivide the valves in the applicable group of 
processes, then the provisions of paragraphs (e)(5)(i) through 
(e)(5)(viii) of this section apply.
    (i) The overall performance of total valves in the applicable group 
of processes must be less than 2 percent leaking valves, as detected 
according to paragraphs (e)(3) (i) and (ii) of this section and as 
calculated according to

[[Page 36]]

paragraphs (e)(6) (ii) and (iii) of this section.
    (ii) The initial assignment or subsequent reassignment of valves to 
subgroups shall be governed by the provisions of paragraphs (e)(5)(ii) 
(A) through (C) of this section.
    (A) The owner or operator shall determine which valves are assigned 
to each subgroup. Valves with less than 1 year of monitoring data or 
valves not monitored within the last 12 months must be placed initially 
into the most frequently monitored subgroup until at least 1 year of 
monitoring data has been obtained.
    (B) Any valve or group of valves can be reassigned from a less 
frequently monitored subgroup to a more frequently monitored subgroup 
provided that the valves to be reassigned were monitored during the most 
recent monitoring period for the less frequently monitored subgroup. The 
monitoring results must be included with the less frequently monitored 
subgroup's monitoring event and associated next percent leaking valves 
calculation for that group.
    (C) Any valve or group of valves can be reassigned from a more 
frequently monitored subgroup to a less frequently monitored subgroup 
provided that the valves to be reassigned have not leaked for the period 
of the less frequently monitored subgroup (e.g., for the last 12 months, 
if the valve or group of valves is to be reassigned to a subgroup being 
monitored annually). Nonrepairable valves may not be reassigned to a 
less frequently monitored subgroup.
    (iii) The owner or operator shall determine every 6 months if the 
overall performance of total valves in the applicable group of processes 
is less than 2 percent leaking valves and so indicate the performance in 
the next periodic report. If the overall performance of total valves in 
the applicable group of processes is 2 percent leaking valves or 
greater, the owner or operator shall revert to the program required in 
paragraphs (e)(2) through (e)(4) of this section. The overall 
performance of total valves in the applicable group of processes shall 
be calculated as a weighted average of the percent leaking valves of 
each subgroup according to the following Equation 4:
[GRAPHIC] [TIFF OMITTED] TR21SE98.002

where:

%VLO = overall performance of total valves in the applicable 
process or group of processes
%VLi = percent leaking valves in subgroup I, most recent 
value calculated according to the procedures in paragraphs (e)(6) (ii) 
and (iii) of this section
Vi = number of valves in subgroup I
n = number of subgroups

    (iv) Records. In addition to records required by paragraph (g) of 
this section, the owner or operator shall maintain records specified in 
paragraphs (e)(5)(iv)(A) through (D) of this section.
    (A) Which valves are assigned to each subgroup,
    (B) Monitoring results and calculations made for each subgroup for 
each monitoring period,
    (C) Which valves are reassigned and when they were reassigned, and
    (D) The results of the semiannual overall performance calculation 
required in paragraph (e)(5)(iii) of this section.
    (v) The owner or operator shall notify the Administrator no later 
than 30 days prior to the beginning of the next monitoring period of the 
decision to subgroup valves. The notification shall identify the 
participating processes and the valves assigned to each subgroup.
    (vi) Semiannual reports. In addition to the information required by 
paragraph (h)(3) of this section, the owner or operator shall submit in 
the periodic reports the information specified in paragraphs 
(e)(5)(vi)(A) and (B) of this section.
    (A) Valve reassignments occurring during the reporting period, and
    (B) Results of the semiannual overall performance calculation 
required by paragraph (e)(5)(iii) of this section.

[[Page 37]]

    (vii) To determine the monitoring frequency for each subgroup, the 
calculation procedures of paragraph (e)(6)(iii) of this section shall be 
used.
    (viii) Except for the overall performance calculations required by 
paragraphs (e)(5)(i) and (e)(5)(iii) of this section, each subgroup 
shall be treated as if it were a process for the purposes of applying 
the provisions of this section.
    (6)(i) The owner or operator shall decide no later than the 
implementation date of this subpart or upon revision of an operating 
permit how to group the processes. Once the owner or operator has 
decided, all subsequent percentage calculations shall be made on the 
same basis.
    (ii) Percent leaking valves for each group of processes or subgroup 
shall be determined by the following Equation 5:

%VL = [VL/VT]  x  100    (Eq. 5)

Where:

%VL = percent leaking valves
VL = number of valves found leaking excluding nonrepairables 
as provided in paragraph (e)(6)(iv)(A) of this section
VT = total valves monitored, in a monitoring period excluding 
valves monitored as required by (e)(7)(iii) of this section

    (iii) When determining monitoring frequency for each group of 
processes or subgroup subject to monthly, quarterly, or semiannual 
monitoring frequencies, the percent leaking valves shall be the 
arithmetic average of the percent leaking valves from the last two 
monitoring periods. When determining monitoring frequency for each group 
of processes or subgroup subject to annual or biennial (once every 2 
years) monitoring frequencies, the percent leaking valves shall be the 
arithmetic average of the percent leaking valves from the last three 
monitoring periods.
    (iv)(A) Nonrepairable valves shall be included in the calculation of 
percent leaking valves the first time the valve is identified as leaking 
and nonrepairable and as required to comply with paragraph (e)(6)(iv)(B) 
of this section. Otherwise, a number of nonrepairable valves (identified 
and included in the percent leaking calculation in a previous period) up 
to a maximum of 1 percent of the total number of valves in organic HAP 
service at a process may be excluded from calculation of percent leaking 
valves for subsequent monitoring periods.
    (B) If the number of nonrepairable valves exceeds 1 percent of the 
total number of valves in organic HAP service at a process, the number 
of nonrepairable valves exceeding 1 percent of the total number of 
valves in organic HAP service shall be included in the calculation of 
percent leaking valves.
    (7) Repair provisions. (i) When a leak is detected, it shall be 
repaired as soon as practicable, but no later than 15 calendar days 
after the leak is detected, except as provided in paragraph (b)(1)(v) of 
this section.
    (ii) A first attempt at repair shall be made no later than 5 
calendar days after each leak is detected.
    (iii) When a leak is repaired, the valve shall be monitored at least 
once within the first 3 months after its repair. Days that the valve is 
not in organic HAP service shall not be considered part of this 3 month 
period.
    (8) First attempts at repair include, but are not limited to, the 
following practices where practicable:
    (i) Tightening of bonnet bolts,
    (ii) Replacement of bonnet bolts,
    (iii) Tightening of packing gland nuts, and
    (iv) Injection of lubricant into lubricated packing.
    (9) Any equipment located at a plant site with fewer than 250 valves 
in organic HAP service in the affected source is exempt from the 
requirements for monthly monitoring specified in paragraph (e)(4)(i) of 
this section. Instead, the owner or operator shall monitor each valve in 
organic HAP service for leaks once each quarter, or comply with 
paragraphs (e)(4)(iii) or (e)(4)(iv) of this section.
    (f) Unsafe to Monitor, Difficult to Monitor, and Inaccessible 
Equipment. (1) Equipment that is designated as unsafe to monitor, 
difficult to monitor, or inaccessible is exempt from the monitoring 
requirements specified in paragraphs (f)(1)(i) through (iv) of this 
section provided the owner or operator meets the requirements specified 
in paragraph (f)(2), (f)(3), or (f)(4) of this

[[Page 38]]

section, as applicable. Ceramic or ceramic-lined connectors are subject 
to the same requirements as inaccessible connectors.
    (i) For pumps and agitators, paragraphs (c)(2), (c)(3), and (c)(4) 
of this section do not apply.
    (ii) For valves, paragraphs (e)(2) through (e)(7) of this section do 
not apply.
    (iii) For closed-vent systems, Sec. 63.172(f)(1) and (2), and (g) do 
not apply.
    (iv) For connectors, Sec. 63.174(b) through (e) do not apply.
    (2) Equipment that is unsafe to monitor. (i) Equipment may be 
designated as unsafe to monitor if the owner or operator determines that 
monitoring personnel would be exposed to an immediate danger as a 
consequence of complying with the monitoring requirements in paragraphs 
(f)(1)(i) through (iv) of this section.
    (ii) The owner or operator of equipment that is designated as 
unsafe-to-monitor must have a written plan that requires monitoring of 
the equipment as frequently as practicable during safe-to-monitor times, 
but not more frequently than the periodic monitoring schedule otherwise 
applicable.
    (3) Equipment that is difficult to monitor. (i) Equipment may be 
designated as difficult to monitor if the owner or operator determines 
that the equipment cannot be monitored without elevating the monitoring 
personnel more than 2 meters above a support surface or it is not 
accessible at anytime in a safe manner;
    (ii) At an existing source, any equipment within a group of 
processes that meets the criteria of paragraph (f)(3)(i) of this section 
may be designated as difficult to monitor. At a new affected source, an 
owner or operator may designate no more than 3 percent of each type of 
equipment as difficult to monitor.
    (iii) The owner or operator of equipment designated as difficult to 
monitor must follow a written plan that requires monitoring of the 
equipment at least once per calendar year.
    (4) Inaccessible equipment and ceramic or ceramic-lined connectors. 
(i) A connector, agitator, or valve may be designated as inaccessible if 
it is:
    (A) Buried;
    (B) Insulated in a manner that prevents access to the equipment by a 
monitor probe;
    (C) Obstructed by equipment or piping that prevents access to the 
equipment by a monitor probe;
    (D) Unable to be reached from a wheeled scissor-lift or hydraulic-
type scaffold which would allow access to equipment up to 7.6 meters (25 
feet) above the ground; or
    (E) Not able to be accessed at any time in a safe manner to perform 
monitoring. Unsafe access includes, but is not limited to, the use of a 
wheeled scissor-lift on unstable or uneven terrain, the use of a 
motorized man-lift basket in areas where an ignition potential exists, 
or access would require near proximity to hazards such as electrical 
lines, or would risk damage to equipment.
    (ii) At an existing source, any connector, agitator, or valve that 
meets the criteria of paragraph (f)(4)(i) of this section may be 
designated as inaccessible. At a new affected source, an owner or 
operator may designate no more than 3 percent of each type of equipment 
as inaccessible.
    (iii) If any inaccessible equipment or ceramic or ceramic-lined 
connector is observed by visual, audible, olfactory, or other means to 
be leaking, the leak shall be repaired as soon as practicable, but no 
later than 15 calendar days after the leak is detected, except as 
provided in paragraph (g) of this section.
    (g) Recordkeeping Requirements. (1) An owner or operator of more 
than one group of processes subject to the provisions of this section 
may comply with the recordkeeping requirements for the groups of 
processes in one recordkeeping system if the system identifies with each 
record the program being implemented (e.g., quarterly monitoring) for 
each type of equipment. All records and information required by this 
section shall be maintained in a manner that can be readily accessed at 
the plant site. This could include physically locating the records at 
the plant site or accessing the records from a central location by 
computer at the plant site.

[[Page 39]]

    (2) General recordkeeping. Except as provided in paragraph (e) of 
this section and in paragraph (a)(9) of this section, the following 
information pertaining to all equipment subject to the requirements in 
this section shall be recorded:
    (i)(A) A list of identification numbers for equipment (except 
connectors that are not subject to paragraph (f) of this section and 
instrumentation systems) subject to the requirements of this section. 
Connectors, except those subject to paragraph (f) of this section, need 
not be individually identified if all connectors in a designated area or 
length of pipe subject to the provisions of this section are identified 
as a group, and the number of subject connectors is indicated. The list 
for each type of equipment shall be completed no later than the 
completion of the initial survey required for that component. The list 
of identification numbers shall be updated, if needed, to incorporate 
equipment changes within 15 calendar days of the completion of each 
monitoring survey for the type of equipment component monitored.
    (B) A schedule for monitoring connectors subject to the provisions 
of Sec. 63.174(a) and valves subject to the provisions of paragraph 
(e)(4) of this section.
    (C) Physical tagging of the equipment to indicate that it is in 
organic HAP service is not required. Equipment subject to the provisions 
of this section may be identified on a plant site plan, in log entries, 
or by other appropriate methods.
    (ii)(A) A list of identification numbers for equipment that the 
owner or operator elects to equip with a closed-vent system and control 
device, under the provisions of paragraph (c)(7) of this section, 
Sec. 63.164(h), or Sec. 63.165(c).
    (B) A list of identification numbers for compressors that the owner 
or operator elects to designate as operating with an instrument reading 
of less than 500 parts per million above background, under the 
provisions of Sec. 63.164(i).
    (iii)(A) A list of identification numbers for pressure relief 
devices subject to the provisions in Sec. 63.165(a).
    (B) A list of identification numbers for pressure relief devices 
equipped with rupture disks, under the provisions of Sec. 63.165(d).
    (iv) Identification of instrumentation systems subject to the 
provisions of this section. Individual components in an instrumentation 
system need not be identified.
    (v) The owner or operator may develop a written procedure that 
identifies the conditions that justify a delay of repair. The written 
procedures may be included as part of the startup/shutdown/malfunction 
plan, required by Sec. 63.1260(i), for the source or may be part of a 
separate document that is maintained at the plant site. Reasons for 
delay of repair may be documented by citing the relevant sections of the 
written procedure.
    (vi) The following information shall be recorded for each dual 
mechanical seal system:
    (A) Design criteria required by paragraph (c)(5)(vi)(A) of this 
section and Sec. 63.164(e)(2), and an explanation of the design 
criteria; and
    (B) Any changes to these criteria and the reasons for the changes.
    (vii) A list of equipment designated as unsafe to monitor, difficult 
to monitor, or inaccessible under paragraphs (f) or (b)(1)(v)(B) of this 
section and a copy of the plan for monitoring or inspecting this 
equipment.
    (viii) A list of connectors removed from and added to the process, 
as described in Sec. 63.174(i)(1), and documentation of the integrity of 
the weld for any removed connectors, as required in Sec. 63.174(j). This 
is not required unless the net credits for removed connectors is 
expected to be used.
    (ix) For batch processes that the owner or operator elects to 
monitor as provided under Sec. 63.178(c), a list of equipment added to 
batch product processes since the last monitoring period required in 
Secs. 63.178(c)(3)(ii) and (3)(iii). This list must be completed for 
each type of equipment within 15 calendar days of the completion of each 
monitoring survey for the type of equipment monitored.
    (3) Records of visual inspections. For visual inspections of 
equipment subject to the provisions of paragraphs

[[Page 40]]

(c)(2)(iii) and (c)(5)(iv)(A) of this section, the owner or operator 
shall document that the inspection was conducted and the date of the 
inspection. The owner or operator shall maintain records as specified in 
paragraph (g)(4) of this section for leaking equipment identified in 
this inspection, except as provided in paragraph (g)(5) of this section. 
These records shall be retained for 2 years.
    (4) Monitoring records. When each leak is detected as specified in 
paragraph (c) of this section and Sec. 63.164; paragraph (e) of this 
section and Sec. 63.169; and Secs. 63.172 and 63.174 of subpart H, the 
following information shall be recorded and kept for 2 years onsite and 
3 years offsite (5 years total):
    (i) The instrument and the equipment identification number and the 
operator name, initials, or identification number.
    (ii) The date the leak was detected and the date of the first 
attempt to repair the leak.
    (iii) The date of successful repair of the leak.
    (iv) If postrepair monitoring is required, the maximum instrument 
reading measured by Method 21 of 40 CFR part 60, appendix A after the 
leak is successfully repaired or determined to be nonrepairable.
    (v) ``Repair delayed'' and the reason for the delay if a leak is not 
repaired within 15 calendar days after discovery of the leak.
    (A) The owner or operator may develop a written procedure that 
identifies the conditions that justify a delay of repair. In such cases, 
reasons for delay of repair may be documented by citing the relevant 
sections of the written procedure.
    (B) If delay of repair was caused by depletion of stocked parts, 
there must be documentation that the spare parts were sufficiently 
stocked onsite before depletion and the reason for depletion.
    (vi) If repairs were delayed, dates of process shutdowns that occur 
while the equipment is unrepaired.
    (vii)(A) If the alternative in Sec. 63.174(c)(1)(ii) is not in use 
for the monitoring period, identification, either by list, location 
(area or grouping), or tagging of connectors disturbed since the last 
monitoring period required in Sec. 63.174(b), as described in 
Sec. 63.174(c)(1).
    (B) The date and results of follow-up monitoring as required in 
Sec. 63.174(c). If identification of disturbed connectors is made by 
location, then all connectors within the designated location shall be 
monitored.
    (viii) The date and results of the monitoring required in 
Sec. 63.178(c)(3)(i) for equipment added to a batch process since the 
last monitoring period required in Secs. 63.178(c)(3)(ii) and 
(c)(3)(iii). If no leaking equipment is found in this monitoring, the 
owner or operator shall record that the inspection was performed. 
Records of the actual monitoring results are not required.
    (ix) Copies of the periodic reports as specified in paragraph (h)(3) 
of this section, if records are not maintained on a computerized data 
base capable of generating summary reports from the records.
    (5) Records of pressure tests. The owner or operator who elects to 
pressure test a process equipment train and supply lines between storage 
and processing areas to demonstrate compliance with this section is 
exempt from the requirements of paragraphs (g)(2), (g)(3), (g)(4), and 
(g)(6) of this section. Instead, the owner or operator shall maintain 
records of the following information:
    (i) The identification of each product, or product code, produced 
during the calendar year. It is not necessary to identify individual 
items of equipment in the process equipment train.
    (ii) Records demonstrating the proportion of the time during the 
calendar year the equipment is in use in the process that is subject to 
the provisions of this subpart. Examples of suitable documentation are 
records of time in use for individual pieces of equipment or average 
time in use for the process unit. These records are not required if the 
owner or operator does not adjust monitoring frequency by the time in 
use, as provided in Sec. 63.178(c)(3)(iii).
    (iii) Physical tagging of the equipment to identify that it is in 
organic HAP service and subject to the provisions of this section is not 
required. Equipment in a process subject to the provisions of this 
appendix may be

[[Page 41]]

identified on a plant site plan, in log entries, or by other appropriate 
methods.
    (iv) The dates of each pressure test required in Sec. 63.178(b), the 
test pressure, and the pressure drop observed during the test.
    (v) Records of any visible, audible, or olfactory evidence of fluid 
loss.
    (vi) When a process equipment train does not pass two consecutive 
pressure tests, the following information shall be recorded in a log and 
kept for 2 years:
    (A) The date of each pressure test and the date of each leak repair 
attempt.
    (B) Repair methods applied in each attempt to repair the leak.
    (C) The reason for the delay of repair.
    (D) The expected date for delivery of the replacement equipment and 
the actual date of delivery of the replacement equipment.
    (E) The date of successful repair.
    (6) Records of compressor compliance tests. The dates and results of 
each compliance test required for compressors subject to the provisions 
in Sec. 63.164(i) and the dates and results of the monitoring following 
a pressure release for each pressure relief device subject to the 
provisions in Secs. 63.165(a) and (b). The results shall include:
    (i) The background level measured during each compliance test.
    (ii) The maximum instrument reading measured at each piece of 
equipment during each compliance test.
    (7) Records for closed-vent systems. The owner or operator shall 
maintain records of the information specified in paragraphs (g)(7)(i) 
through (g)(7)(iii) of this section for closed-vent systems and control 
devices subject to the provisions of paragraph (b)(1)(vi) of this 
section. The records specified in paragraph (g)(7)(i) of this section 
shall be retained for the life of the equipment. The records specified 
in paragraphs (g)(7)(ii) and (g)(7)(iii) of this section shall be 
retained for 2 years.
    (i) The design specifications and performance demonstrations 
specified in paragraphs (g)(7)(i)(A) through (g)(7)(i)(D) of this 
section.
    (A) Detailed schematics, design specifications of the control 
device, and piping and instrumentation diagrams.
    (B) The dates and descriptions of any changes in the design 
specifications.
    (C) The flare design (i.e., steam assisted, air assisted, or 
nonassisted) and the results of the compliance demonstration required by 
Sec. 63.11(b).
    (D) A description of the parameter or parameters monitored, as 
required in paragraph (b)(1)(vi) of this section, to ensure that control 
devices are operated and maintained in conformance with their design and 
an explanation of why that parameter (or parameters) was selected for 
the monitoring.
    (ii) Records of operation of closed-vent systems and control 
devices.
    (A) Dates and durations when the closed-vent systems and control 
devices required in paragraph (c) of this section and Secs. 63.164 
through 63.166 are not operated as designed as indicated by the 
monitored parameters, including periods when a flare pilot light system 
does not have a flame.
    (B) Dates and durations during which the monitoring system or 
monitoring device is inoperative.
    (C) Dates and durations of startups and shutdowns of control devices 
required in paragraph (c)(7) of this section and Secs. 63.164 through 
63.166.
    (iii) Records of inspections of closed-vent systems subject to the 
provisions of Sec. 63.172.
    (A) For each inspection conducted in accordance with the provisions 
of Sec. 63.172(f)(1) or (f)(2) during which no leaks were detected, a 
record that the inspection was performed, the date of the inspection, 
and a statement that no leaks were detected.
    (B) For each inspection conducted in accordance with the provisions 
of Sec. 63.172(f)(1) or (f)(2) during which leaks were detected, the 
information specified in paragraph (g)(4) of this section shall be 
recorded.
    (8) Records for components in heavy liquid service. Information, 
data, and analysis used to determine that a piece of equipment or 
process is in heavy liquid service shall be recorded. Such a 
determination shall include an analysis or demonstration that the 
process fluids do not meet the criteria of ``in light liquid or gas 
service.'' Examples of information that could document this include, but 
are not limited to, records of chemicals purchased for the process,

[[Page 42]]

analyses of process stream composition, engineering calculations, or 
process knowledge.
    (9) Records of exempt components. Identification, either by list, 
location (area or group) of equipment in organic HAP service less than 
300 hours per year subject to the provisions of this section.
    (10) Records of alternative means of compliance determination. 
Owners and operators choosing to comply with the requirements of 
Sec. 63.179 shall maintain the following records:
    (i) Identification of the process(es) and the organic HAP they 
handle.
    (ii) A schematic of the process, enclosure, and closed-vent system.
    (iii) A description of the system used to create a negative pressure 
in the enclosure to ensure that all emissions are routed to the control 
device.
    (h) Reporting Requirements. (1) Each owner or operator of a source 
subject to this section shall submit the reports listed in paragraphs 
(h)(1)(i) through (ii) of this section.
    (i) A Notification of Compliance Status Report described in 
paragraph (h)(2) of this section,
    (ii) Periodic Reports described in paragraph (h)(3) of this section, 
and
    (2) Notification of compliance report. Each owner or operator of a 
source subject to this section shall submit the information specified in 
paragraphs (h)(2)(i) through (iii) of this section in the Notification 
of Compliance Status Report described in Sec. 63.1260(f).
    (i) The notification shall provide the information listed in 
paragraphs (h)(2)(i)(A) through (C) of this section for each process 
subject to the requirements of paragraphs (b) through (g) of this 
section.
    (A) Process group identification.
    (B) Approximate number of each equipment type (e.g., valves, pumps) 
in organic HAP service, excluding equipment in vacuum service.
    (C) Method of compliance with the standard (for example, ``monthly 
leak detection and repair'' or ``equipped with dual mechanical seals'').
    (ii) The notification shall provide the information listed in 
paragraphs (h)(2)(ii)(A) and (B) of this section for each process 
subject to the requirements of paragraph (b)(1)(ix) of this section and 
Sec. 63.178(b).
    (A) Products or product codes subject to the provisions of this 
section, and
    (B) Planned schedule for pressure testing when equipment is 
configured for production of products subject to the provisions of this 
section.
    (iii) The notification shall provide the information listed in 
paragraphs (h)(2)(iii)(A) and (B) of this section for each process 
subject to the requirements in Sec. 63.179.
    (A) Process identification.
    (B) A description of the system used to create a negative pressure 
in the enclosure and the control device used to comply with the 
requirements of paragraph (b)(1)(vi) of this section.
    (iv) Any change in the information submitted under paragraph (h) of 
this section shall be provided to the Administrator as a part of 
subsequent Periodic Reports. Section 63.9(j) shall not apply to the 
Notification of Compliance Status Report described in this paragraph 
(h)(2) of this section.
    (3) Periodic reports. The owner or operator of a source subject to 
this section shall submit Periodic Reports.
    (i) A report containing the information in paragraphs (h)(3)(ii), 
(h)(3)(iii), and (h)(3)(iv) of this section shall be submitted 
semiannually starting 6 months after the Notification of Compliance 
Status Report, as required in paragraph (h)(2) of this section. The 
first periodic report shall cover the first 6 months after the 
compliance date specified in Sec. 63.1250(e). Each subsequent periodic 
report shall cover the 6 month period following the preceding period.
    (ii) For equipment complying with the provisions of paragraphs (b) 
through (g) of this section, the summary information listed in 
paragraphs (h)(3)(ii)(A) through (L) of this section for each monitoring 
period during the 6-month period.
    (A) The number of valves for which leaks were detected as described 
in paragraph (e)(3) of this section, the percent leakers, and the total 
number of valves monitored;
    (B) The number of valves for which leaks were not repaired as 
required in

[[Page 43]]

paragraph (e)(7) of this section, identifying the number of those that 
are determined nonrepairable;
    (C) The number of pumps and agitators for which leaks were detected 
as described in paragraph (c)(2) of this section, the percent leakers, 
and the total number of pumps and agitators monitored;
    (D) The number of pumps and agitators for which leaks were not 
repaired as required in paragraph (c)(3) of this section;
    (E) The number of compressors for which leaks were detected as 
described in Sec. 63.164(f);
    (F) The number of compressors for which leaks were not repaired as 
required in Sec. 63.164(g);
    (G) The number of connectors for which leaks were detected as 
described in Sec. 63.174(a), the percent of connectors leaking, and the 
total number of connectors monitored;
    (H) The number of connectors for which leaks were not repaired as 
required in Sec. 63.174(d), identifying the number of those that are 
determined nonrepairable;
    (I) The facts that explain any delay of repairs and, where 
appropriate, why a process shutdown was technically infeasible.
    (J) The results of all monitoring to show compliance with 
Secs. 63.164(i), 63.165(a), and 63.172(f) conducted within the 
semiannual reporting period.
    (K) If applicable, the initiation of a monthly monitoring program 
under either paragraph (c)(4)(ii) or paragraph (e)(4)(i) of this 
section.
    (L) If applicable, notification of a change in connector monitoring 
alternatives as described in Sec. 63.174(c)(1).
    (iii) For owners or operators electing to meet the requirements of 
Sec. 63.178(b), the report shall include the information listed in 
paragraphs (h)(3)(iii)(A) through (E) of this paragraph for each 
process.
    (A) Product process equipment train identification;
    (B) The number of pressure tests conducted;
    (C) The number of pressure tests where the equipment train failed 
either the retest or two consecutive pressure tests;
    (D) The facts that explain any delay of repairs; and
    (E) The results of all monitoring to determine compliance with 
Sec. 63.172(f) of subpart H.
    (iv) Any revisions to items reported in earlier Notification of 
Compliance Status Report, if the method of compliance has changed since 
the last report or any other changes to the information reported has 
occurred.



Sec. 63.1256  Standards: Wastewater.

    (a) General. Each owner or operator of any affected source (existing 
or new) shall comply with the general wastewater requirements in 
paragraphs (a)(1) and (2) of this section.
    (1) Identify wastewater that requires control. For each POD, the 
owner or operator shall comply with the requirements in either paragraph 
(a)(1)(i), or (ii) of this section to determine whether a wastewater 
stream is an affected wastewater stream that requires control for 
soluble and/or partially soluble HAP compounds or to designate the 
wastewater stream as an affected wastewater stream, respectively. The 
owner or operator may use a combination of the approaches in paragraphs 
(a)(1)(i) and (ii) of this section for different affected wastewater 
generated at the source. The owner or operator shall also comply with 
the requirements for multiphase discharges in paragraph (a)(4) of this 
section. Wastewater identified in paragraph (a)(3) of this section is 
exempt from the provisions of this subpart.
    (i) Determine characteristics of a wastewater stream. At new and 
existing sources, a wastewater stream is an affected wastewater stream 
if the annual average concentration and annual load exceed any of the 
criteria specified in paragraph (a)(1)(i)(A) through (C) of this 
section. At new sources, a wastewater stream is subject to additional 
control requirements if the annual average concentration and annual load 
exceed the criteria specified in paragraphs (a)(1)(i)(D) of this 
section. The owner or operator shall comply with the provisions of 
Sec. 63.1257(e)(1) to determine the annual average concentrations and 
annual load of partially soluble and soluble HAP compounds.

[[Page 44]]

    (A) The wastewater stream contains partially soluble HAP compounds 
at an annual average concentration greater than 1,300 ppmw, and the 
total soluble and partially soluble HAP load in all wastewater from the 
PMPU exceeds 1 Mg/yr.
    (B) The wastewater stream contains partially soluble and/or soluble 
HAP compounds at an annual average concentration of 5,200 ppmw, and the 
total soluble and partially soluble HAP load in all wastewater from the 
PMPU exceeds 1 Mg/yr.
    (C) The wastewater stream contains partially soluble and/or soluble 
HAP at an annual average concentration of greater than 10,000 ppmw, and 
the total partially soluble and/or soluble HAP load in all wastewater 
from the affected source is greater than 1 Mg/yr.
    (D) The wastewater stream contains soluble HAP compounds at an 
annual average concentration greater than 110,000 ppmw, and the total 
soluble and partially soluble HAP load in all wastewater from the PMPU 
exceeds 1 Mg/yr.
    (ii) Designate wastewater as affected wastewater. For existing 
sources, the owner or operator may elect to designate wastewater streams 
as meeting the criteria of either paragraphs (a)(1)(i)(A),(B), or (C) of 
this section. For new sources, the owner or operator may elect to 
designate wastewater streams meeting the criterion in paragraph 
(a)(1)(i)(D) or for wastewater known to contain no soluble HAP, as 
meeting the criterion in paragraph (a)(1)(i)(A) of this section. For 
designated wastewater the procedures specified in paragraphs 
(a)(1)(ii)(A) and (B) of this section shall be followed, except as 
specified in paragraphs (g)(8)(i), (g)(9)(i), and (g)(10) of this 
section. The owner or operator is not required to determine the annual 
average concentration or load for each designated wastewater stream for 
the purposes of this section.
    (A) From the POD for the wastewater stream that is designated as an 
affected wastewater stream to the location where the owner or operator 
elects to designate such wastewater stream as an affected wastewater 
stream, the owner or operator shall comply with all applicable emission 
suppression requirements specified in paragraphs (b) through (f) of this 
section.
    (B) From the location where the owner or operator designates a 
wastewater stream as an affected wastewater stream, such wastewater 
stream shall be managed in accordance with all applicable emission 
suppression requirements specified in paragraphs (b) through (f) of this 
section and with the treatment requirements in paragraph (g) of this 
section.
    (iii) Scrubber Effluent. Effluent from a water scrubber that has 
been used to control Table 2 HAP-containing vent streams that are 
controlled in order to meet the process vent requirements in 
Sec. 63.1254 of this subpart is considered an affected wastewater 
stream.
    (2) Requirements for affected wastewater. (i) An owner or operator 
of a facility shall comply with the applicable requirements for 
wastewater tanks, surface impoundments, containers, individual drain 
systems, and oil/water separators as specified in paragraphs (b) through 
(f) of this section, except as provided in paragraph (g)(3) of this 
section.
    (ii) Comply with the applicable requirements for control of soluble 
and partially soluble compounds as specified in paragraph (g) of this 
section. Alternatively, the owner or operator may elect to comply with 
the treatment provisions specified in paragraph (a)(5) of this section.
    (iii) Comply with the applicable monitoring and inspection 
requirements specified in Sec. 63.1258.
    (iv) Comply with the applicable recordkeeping and reporting 
requirements specified in Secs. 63.1259 and 63.1260.
    (3) Exempt wastewater. The following wastewaters are not subject to 
the wastewater provisions of this part:
    (i) Stormwater from segregated sewers;
    (ii) Water from fire-fighting and deluge systems, including testing 
of such systems;
    (iii) Spills; and
    (iv) Water from safety showers.
    (4) Requirements for multiphase discharges. The owner or operator 
shall not discharge a separate phase that can be isolated through 
gravity separation from the aqueous phase to a waste management or 
treatment unit, unless

[[Page 45]]

the stream is discharged to a treatment unit in compliance with 
paragraph (g)(13) of this section.
    (5) Offsite treatment or onsite treatment not owned or operated by 
the source. The owner or operator may elect to transfer affected 
wastewater streams that contain less than 50 ppmw of partially soluble 
HAP or a residual removed from such affected wastewater to an onsite 
treatment operation not owned or operated by the owner or operator of 
the source generating the wastewater or residual, or to an offsite 
treatment operation, provided that the waste management units up to the 
activated sludge unit are covered or the owner or operator demonstrates 
that less than 5 percent of the total soluble HAP is emitted from the 
these units.
    (i) The owner or operator transferring the wastewater or residual 
shall:
    (A) Comply with the provisions specified in paragraphs (b) through 
(f) of this section for each waste management unit that receives or 
manages affected wastewater or a residual removed from affected 
wastewater prior to shipment or transport.
    (B) Include a notice with each shipment or transport of affected 
wastewater or residual removed from affected wastewater. The notice 
shall state that the affected wastewater or residual contains organic 
HAP that are to be treated in accordance with the provisions of this 
subpart. When the transport is continuous or ongoing (for example, 
discharge to a publicly-owned treatment works), the notice shall be 
submitted to the treatment operator initially and whenever there is a 
change in the required treatment. The owner or operator shall keep a 
record of the notice in accordance with Sec. 63.1259(g).
    (ii) The owner or operator may not transfer the affected wastewater 
or residual unless the transferee has submitted to the EPA a written 
certification that the transferee will manage and treat any affected 
wastewater or residual removed from affected wastewater received from a 
source subject to the requirements of this subpart in accordance with 
the requirements of either:
    (A) Paragraphs (b) through (i) of this section; or
    (B) Subpart D of this part if alternative emission limitations have 
been granted the transferor in accordance with those provisions; or
    (C) Section 63.6(g).
    (iii) The certifying entity may revoke the written certification by 
sending a written statement to the EPA and the owner or operator giving 
at least 90 days notice that the certifying entity is rescinding 
acceptance of responsibility for compliance with the regulatory 
provisions listed in this paragraph. Upon expiration of the notice 
period, the owner or operator may not transfer the wastewater stream or 
residual to the treatment operation.
    (iv) By providing this written certification to the EPA, the 
certifying entity accepts responsibility for compliance with the 
regulatory provisions listed in paragraph (a)(5)(ii) of this section 
with respect to any shipment of wastewater or residual covered by the 
written certification. Failure to abide by any of those provisions with 
respect to such shipments may result in enforcement action by the EPA 
against the certifying entity in accordance with the enforcement 
provisions applicable to violations of these provisions by owners or 
operators of sources.
    (v) Written certifications and revocation statements, to the EPA 
from the transferees of wastewater or residuals shall be signed by the 
responsible official of the certifying entity, provide the name and 
address of the certifying entity, and be sent to the appropriate EPA 
Regional Office at the addresses listed in Sec. 63.13. Such written 
certifications are not transferable by the treater.
    (b) Wastewater tanks. For each wastewater tank that receives, 
manages, or treats affected wastewater or a residual removed from 
affected wastewater, the owner or operator shall comply with the 
requirements of either paragraph (b)(1) or (2) of this section as 
specified in Table 6 of this subpart.
    (1) The owner or operator shall operate and maintain a fixed roof 
except when the contents of the wastewater tank are heated, treated by 
means of an exothermic reaction, or sparged, during which time the owner 
or operator shall comply with the requirements specified in paragraph 
(b)(2) of

[[Page 46]]

this section. For the purposes of this paragraph, the requirements of 
paragraph (b)(2) of this section are satisfied by operating and 
maintaining a fixed roof if the owner or operator demonstrates that the 
total soluble and partially soluble HAP emissions from the wastewater 
tank are no more than 5 percent higher than the emissions would be if 
the contents of the wastewater tank were not heated, treated by an 
exothermic reaction, or sparged.
    (2) The owner or operator shall comply with the requirements in 
paragraphs (b)(3) through (9) of this section and shall operate and 
maintain one of the emission control techniques listed in paragraphs 
(b)(2)(i) through (iii) of this section.
    (i) A fixed roof and a closed-vent system that routes the organic 
HAP vapors vented from the wastewater tank to a control device; or
    (ii) A fixed roof and an internal floating roof that meets the 
requirements specified in Sec. 63.119(b), with the differences noted in 
Sec. 63.1257(c)(3)(i) through (iii) for the purposes of this subpart; or
    (iii) An external floating roof that meets the requirements 
specified in Secs. 63.119(c), 63.120(b)(5), and 63.120(b)(6), with the 
differences noted in Sec. 63.1257(c)(3)(i) through (v) for the purposes 
of this subpart.
    (3) If the owner or operator elects to comply with the requirements 
of paragraph (b)(2)(i) of this section, the fixed roof shall meet the 
requirements of paragraph (b)(3)(i) of this section, the control device 
shall meet the requirements of paragraph (b)(3)(ii) of this section, and 
the closed-vent system shall meet the requirements of paragraph 
(b)(3)(iii) of this section.
    (i) The fixed roof shall meet the following requirements:
    (A) Except as provided in paragraph (b)(3)(iv) of this section, the 
fixed roof and all openings (e.g., access hatches, sampling ports, and 
gauge wells) shall be maintained in accordance with the requirements 
specified in Sec. 63.1258(h).
    (B) Each opening shall be maintained in a closed position (e.g., 
covered by a lid) at all times that the wastewater tank contains 
affected wastewater or residual removed from affected wastewater except 
when it is necessary to use the opening for wastewater sampling, 
removal, or for equipment inspection, maintenance, or repair.
    (ii) The control device shall be designed, operated, and inspected 
in accordance with the requirements of paragraph (h) of this section.
    (iii) Except as provided in paragraph (b)(3)(iv) of this section, 
the closed-vent system shall be inspected in accordance with the 
requirements of Sec. 63.1258(h).
    (iv) For any fixed roof tank and closed-vent system that is operated 
and maintained under negative pressure, the owner or operator is not 
required to comply with the requirements specified in Sec. 63.1258(h).
    (4) If the owner or operator elects to comply with the requirements 
of paragraph (b)(2)(ii) of this section, the floating roof shall be 
inspected according to the procedures specified in Sec. 63.120(a)(2) and 
(3), with the differences noted in Sec. 63.1257(c)(3)(iv) for the 
purposes of this subpart.
    (5) Except as provided in paragraph (b)(6) of this section, if the 
owner or operator elects to comply with the requirements of paragraph 
(b)(2)(iii) of this section, seal gaps shall be measured according to 
the procedures specified in Sec. 63.120(b)(2)(i) through (b)(4) and the 
wastewater tank shall be inspected to determine compliance with 
Sec. 63.120(b)(5) and (6) according to the schedule specified in 
Sec. 63.120(b)(1)(i) through (iii).
    (6) If the owner or operator determines that it is unsafe to perform 
the seal gap measurements specified in Sec. 63.120(b)(2)(i) through 
(b)(4) or to inspect the wastewater tank to determine compliance with 
Sec. 63.120(b)(5) and (6) because the floating roof appears to be 
structurally unsound and poses an imminent or potential danger to 
inspecting personnel, the owner or operator shall comply with the 
requirements in either paragraph (b)(6)(i) or (ii) of this section.
    (ii) The owner or operator shall empty and remove the wastewater 
tank from service within 45 calendar days of determining that the roof 
is unsafe. If the wastewater tank cannot be emptied within 45 calendar 
days, the owner or operator may utilize up to two extensions of up to 30 
additional

[[Page 47]]

calendar days each. Documentation of a decision to utilize an extension 
shall include an explanation of why it was unsafe to perform the 
inspection or seal gap measurement, shall document that alternate 
storage capacity is unavailable, and shall specify a schedule of actions 
that will ensure that the wastewater tank will be emptied as soon as 
possible.
    (7) Except as provided in paragraph (b)(6) of this section, each 
wastewater tank shall be inspected initially, and semiannually 
thereafter, for improper work practices in accordance with 
Sec. 63.1258(g). For wastewater tanks, improper work practice includes, 
but is not limited to, leaving open any access door or other opening 
when such door or opening is not in use.
    (8) Except as provided in paragraph (b)(6) of this section, each 
wastewater tank shall be inspected for control equipment failures as 
defined in paragraph (b)(8)(i) of this section according to the schedule 
in paragraphs (b)(8)(ii) and (iii) of this section in accordance with 
Sec. 63.1258(g).
    (i) Control equipment failures for wastewater tanks include, but are 
not limited to, the conditions specified in paragraphs (b)(8)(i)(A) 
through (I) of this section.
    (A) The floating roof is not resting on either the surface of the 
liquid or on the leg supports.
    (B) There is stored liquid on the floating roof.
    (C) A rim seal is detached from the floating roof.
    (D) There are holes, tears, cracks or gaps in the rim seal or seal 
fabric of the floating roof.
    (E) There are visible gaps between the seal of an internal floating 
roof and the wall of the wastewater tank.
    (F) There are gaps between the metallic shoe seal or the liquid 
mounted primary seal of an external floating roof and the wall of the 
wastewater tank that exceed 212 square centimeters per meter of tank 
diameter or the width of any portion of any gap between the primary seal 
and the tank wall exceeds 3.81 centimeters.
    (G) There are gaps between the secondary seal of an external 
floating roof and the wall of the wastewater tank that exceed 21.2 
square centimeters per meter of tank diameter or the width of any 
portion of any gap between the secondary seal and the tank wall exceeds 
1.27 centimeters.
    (H) Where a metallic shoe seal is used on an external floating roof, 
one end of the metallic shoe does not extend into the stored liquid or 
one end of the metallic shoe does not extend a minimum vertical distance 
of 61 centimeters above the surface of the stored liquid.
    (I) A gasket, joint, lid, cover, or door has a crack or gap, or is 
broken.
    (ii) The owner or operator shall inspect for the control equipment 
failures in paragraphs (b)(8)(i)(A) through (H) according to the 
schedule specified in paragraphs (b)(4) and (5) of this section.
    (iii) The owner or operator shall inspect for the control equipment 
failures in paragraph (b)(8)(i)(I) of this section initially, and 
semiannually thereafter.
    (9) Except as provided in paragraph (i) of this section, when an 
improper work practice or a control equipment failure is identified, 
first efforts at repair shall be made no later than 5 calendar days 
after identification and repair shall be completed within 45 calendar 
days after identification. If a failure that is detected during 
inspections required by this section cannot be repaired within 45 
calendar days and if the tank cannot be emptied within 45 calendar days, 
the owner or operator may utilize up to two extensions of up to 30 
additional calendar days each. Documentation of a decision to utilize an 
extension shall include a description of the failure, shall document 
that alternate storage capacity is unavailable, and shall specify a 
schedule of actions that will ensure that the control equipment will be 
repaired or the tank will be emptied as soon as practical.
    (c) Surface impoundments. For each surface impoundment that 
receives, manages, or treats affected wastewater or a residual removed 
from affected wastewater, the owner or operator shall comply with the 
requirements of paragraphs (c)(1), (2), and (3) of this section.
    (1) The owner or operator shall operate and maintain on each surface 
impoundment either a cover (e.g., air-supported structure or rigid 
cover) and a

[[Page 48]]

closed-vent system that routes the organic hazardous air pollutants 
vapors vented from the surface impoundment to a control device in 
accordance with paragraphs (c)(1)(i), (iii), (iv), and (v) of this 
section, or a floating flexible membrane cover as specified in paragraph 
(c)(1)(ii) of this section.
    (i) The cover and all openings shall meet the following 
requirements:
    (A) Except as provided in paragraph (c)(1)(iv) of this section, the 
cover and all openings (e.g., access hatches, sampling ports, and gauge 
wells) shall be maintained in accordance with the requirements specified 
in Sec. 63.1258(h).
    (B) Each opening shall be maintained in a closed position (e.g., 
covered by a lid) at all times that affected wastewater or residual 
removed from affected wastewater is in the surface impoundment except 
when it is necessary to use the opening for sampling, removal, or for 
equipment inspection, maintenance, or repair.
    (C) The cover shall be used at all times that affected wastewater or 
residual removed from affected wastewater is in the surface impoundment 
except during removal of treatment residuals in accordance with 40 CFR 
268.4 or closure of the surface impoundment in accordance with 40 CFR 
264.228.
    (ii) Floating flexible membrane covers shall meet the requirements 
specified in paragraphs (c)(1)(ii)(A) through (F) of this section.
    (A) The floating flexible cover shall be designed to float on the 
liquid surface during normal operations, and to form a continuous 
barrier over the entire surface area of the liquid.
    (B) The cover shall be fabricated from a synthetic membrane material 
that is either:
    (1) High density polyethylene (HDPE) with a thickness no less than 
2.5 millimeters (100 mils); or
    (2) A material or a composite of different materials determined to 
have both organic permeability properties that are equivalent to those 
of the material listed in paragraph (c)(1)(ii)(B)(1) of this section, 
and chemical and physical properties that maintain the material 
integrity for the intended service life of the material.
    (C) The cover shall be installed in a manner such that there are no 
visible cracks, holes, gaps, or other open spaces between cover section 
seams or between the interface of the cover edge and its foundation 
mountings.
    (D) Except as provided for in paragraph (c)(1)(ii)(E) of this 
section, each opening in the floating membrane cover shall be equipped 
with a closure device designed to operate such that when the closure 
device is secured in the closed position there are no visible cracks, 
holes, gaps, or other open spaces in the closure device or between the 
perimeter of the cover opening and the closure device.
    (E) The floating membrane cover may be equipped with one or more 
emergency cover drains for removal of stormwater. Each emergency cover 
drain shall be equipped with a slotted membrane fabric cover that covers 
at least 90 percent of the area of the opening or a flexible fabric 
sleeve seal.
    (F) The closure devices shall be made of suitable materials that 
will minimize exposure of organic HAP to the atmosphere, to the extent 
practical, and will maintain the integrity of the equipment throughout 
its intended service life. Factors to be considered in designing the 
closure devices shall include: the effects of any contact with the 
liquid and its vapor managed in the surface impoundment; the effects of 
outdoor exposure to wind, moisture, and sunlight; and the operating 
practices used for the surface impoundment on which the floating 
membrane cover is installed.
    (G) Whenever affected wastewater or residual from affected 
wastewater is in the surface impoundment, the floating membrane cover 
shall float on the liquid and each closure device shall be secured in 
the closed position. Opening of closure devices or removal of the cover 
is allowed to provide access to the surface impoundment for performing 
routine inspection, maintenance, or other activities needed for normal 
operations and/or to remove accumulated sludge or other residues from 
the bottom of surface impoundment. Openings shall be maintained in 
accordance with Sec. 63.1258(h).
    (iii) The control device shall be designed, operated, and inspected 
in accordance with paragraph (h) of this section.

[[Page 49]]

    (iv) Except as provided in paragraph (c)(1)(v) of this section, the 
closed-vent system shall be inspected in accordance with 
Sec. 63.1258(h).
    (v) For any cover and closed-vent system that is operated and 
maintained under negative pressure, the owner or operator is not 
required to comply with the requirements specified in Sec. 63.1258(h).
    (2) Each surface impoundment shall be inspected initially, and 
semiannually thereafter, for improper work practices and control 
equipment failures in accordance with Sec. 63.1258(g).
    (i) For surface impoundments, improper work practice includes, but 
is not limited to, leaving open any access hatch or other opening when 
such hatch or opening is not in use.
    (ii) For surface impoundments, control equipment failure includes, 
but is not limited to, any time a joint, lid, cover, or door has a crack 
or gap, or is broken.
    (3) Except as provided in paragraph (i) of this section, when an 
improper work practice or a control equipment failure is identified, 
first efforts at repair shall be made no later than 5 calendar days 
after identification and repair shall be completed within 45 calendar 
days after identification.
    (d) Containers. For each container that receives, manages, or treats 
affected wastewater or a residual removed from affected wastewater, the 
owner or operator shall comply with the requirements of paragraphs 
(d)(1) through (5) of this section.
    (1) The owner or operator shall operate and maintain a cover on each 
container used to handle, transfer, or store affected wastewater or a 
residual removed from affected wastewater in accordance with the 
following requirements:
    (i) Except as provided in paragraph (d)(3)(iv) of this section, if 
the capacity of the container is greater than 0.42 m3, the 
cover and all openings (e.g., bungs, hatches, sampling ports, and 
pressure relief devices) shall be maintained in accordance with the 
requirements specified in Sec. 63.1258(h).
    (ii) If the capacity of the container is less than or equal to 0.42 
m3, the owner or operator shall comply with either paragraph 
(d)(1)(ii)(A) or (B) of this section.
    (A) The container must meet existing Department of Transportation 
specifications and testing requirements under 49 CFR part 178; or
    (B) Except as provided in paragraph (d)(3)(iv) of this section, the 
cover and all openings shall be maintained without leaks as specified in 
Sec. 63.1258(h).
    (iii) The cover and all openings shall be maintained in a closed 
position (e.g., covered by a lid) at all times that affected wastewater 
or a residual removed from affected wastewater is in the container 
except when it is necessary to use the opening for filling, removal, 
inspection, sampling, or pressure relief events related to safety 
considerations.
    (2) For containers with a capacity greater than or equal to 0.42 
m3, either a submerged fill pipe shall be used when a 
container is being filled by pumping with affected wastewater or a 
residual removed from affected wastewater or the container shall be 
located within an enclosure with a closed-vent system that routes the 
organic HAP vapors vented from the container to a control device.
    (i) The submerged fill pipe outlet shall extend to no more than 6 
inches or within two fill pipe diameters of the bottom of the container 
while the container is being filled.
    (ii) The cover shall remain in place and all openings shall be 
maintained in a closed position except for those openings required for 
the submerged fill pipe and for venting of the container to prevent 
physical damage or permanent deformation of the container or cover.
    (3) During treatment of affected wastewater or a residual removed 
from affected wastewater, including aeration, thermal or other 
treatment, in a container, whenever it is necessary for the container to 
be open, the container shall be located within an enclosure with a 
closed-vent system that routes the organic HAP vapors vented from the 
container to a control device.
    (i) Except as provided in paragraph (d)(3)(iv) of this section, the 
enclosure and all openings (e.g., doors, hatches) shall be maintained in 
accordance with the requirements specified in Sec. 63.1258(h).

[[Page 50]]

    (ii) The control device shall be designed, operated, and inspected 
in accordance with paragraph (h) of this section.
    (iii) Except as provided in paragraph (d)(3)(iv) of this section, 
the closed-vent system shall be inspected in accordance with 
Sec. 63.1258(h).
    (iv) For any enclosure and closed-vent system that is operated and 
maintained under negative pressure, the owner or operator is not 
required to comply with the requirements specified in Sec. 63.1258(h).
    (4) Each container shall be inspected initially, and semiannually 
thereafter, for improper work practices and control equipment failures 
in accordance with Sec. 63.1258(g).
    (i) For containers, improper work practice includes, but is not 
limited to, leaving open any access hatch or other opening when such 
hatch or opening is not in use.
    (ii) For containers, control equipment failure includes, but is not 
limited to, any time a cover or door has a gap or crack, or is broken.
    (5) Except as provided in paragraph (i) of this section, when an 
improper work practice or a control equipment failure is identified, 
first efforts at repair shall be made no later than 5 calendar days 
after identification and repair shall be completed within 15 calendar 
days after identification.
    (e) Individual drain systems. For each individual drain system that 
receives or manages affected wastewater or a residual removed from 
affected wastewater, the owner or operator shall comply with the 
requirements of paragraphs (e) (1), (2), and (3) or with paragraphs (e) 
(4), (5), and (6) of this section.
    (1) If the owner or operator elects to comply with this paragraph, 
the owner or operator shall operate and maintain on each opening in the 
individual drain system a cover and if vented, route the vapors to a 
process or through a closed-vent system to a control device. The owner 
or operator shall comply with the requirements of paragraphs (e)(1) (i) 
through (v) of this section.
    (i) The cover and all openings shall meet the following 
requirements:
    (A) Except as provided in paragraph (e)(1)(iv) of this section, the 
cover and all openings (e.g., access hatches, sampling ports) shall be 
maintained in accordance with the requirements specified in 
Sec. 63.1258(h).
    (B) The cover and all openings shall be maintained in a closed 
position at all times that affected wastewater or a residual removed 
from affected wastewater is in the drain system except when it is 
necessary to use the opening for sampling or removal, or for equipment 
inspection, maintenance, or repair.
    (ii) The control device shall be designed, operated, and inspected 
in accordance with paragraph (h) of this section.
    (iii) Except as provided in paragraph (e)(1)(iv) of this section, 
the closed-vent system shall be inspected in accordance with 
Sec. 63.1258(h).
    (iv) For any cover and closed-vent system that is operated and 
maintained under negative pressure, the owner or operator is not 
required to comply with the requirements specified in Sec. 63.1258(h).
    (v) The individual drain system shall be designed and operated to 
segregate the vapors within the system from other drain systems and the 
atmosphere.
    (2) Each individual drain system shall be inspected initially, and 
semiannually thereafter, for improper work practices and control 
equipment failures, in accordance with Sec. 63.1258(g).
    (i) For individual drain systems, improper work practice includes, 
but is not limited to, leaving open any access hatch or other opening 
when such hatch or opening is not in use for sampling or removal, or for 
equipment inspection, maintenance, or repair.
    (ii) For individual drain systems, control equipment failure 
includes, but is not limited to, any time a joint, lid, cover, or door 
has a gap or crack, or is broken.
    (3) Except as provided in paragraph (i) of this section, when an 
improper work practice or a control equipment failure is identified, 
first efforts at repair shall be made no later than 5 calendar days 
after identification and repair shall be completed within 15 calendar 
days after identification.
    (4) If the owner or operator elects to comply with this paragraph, 
the owner

[[Page 51]]

or operator shall comply with the requirements in paragraphs (e)(4) (i) 
through (iii) of this section:
    (i) Each drain shall be equipped with water seal controls or a 
tightly fitting cap or plug. The owner or operator shall comply with 
paragraphs (e)(4)(i)(A) and (B) of this section.
    (A) For each drain equipped with a water seal, the owner or operator 
shall ensure that the water seal is maintained. For example, a flow-
monitoring device indicating positive flow from a main to a branch water 
line supplying a trap or water being continuously dripped into the trap 
by a hose could be used to verify flow of water to the trap. Visual 
observation is also an acceptable alternative.
    (B) If a water seal is used on a drain receiving affected 
wastewater, the owner or operator shall either extend the pipe 
discharging the wastewater below the liquid surface in the water seal of 
the receiving drain, or install a flexible shield (or other enclosure 
which restricts wind motion across the open area between the pipe and 
the drain) that encloses the space between the pipe discharging the 
wastewater to the drain receiving the wastewater. (Water seals which are 
used on hubs receiving wastewater that is not subject to the provisions 
of this subpart for the purpose of eliminating cross ventilation to 
drains carrying affected wastewater are not required to have a flexible 
cap or extended subsurface discharging pipe.)
    (ii) Each junction box shall be equipped with a tightly fitting 
solid cover (i.e., no visible gaps, cracks, or holes) which shall be 
kept in place at all times except during inspection and maintenance. If 
the junction box is vented, the owner or operator shall comply with the 
requirements in paragraph (e)(4)(ii) (A) or (B) of this section.
    (A) The junction box shall be vented to a process or through a 
closed-vent system to a control device. The closed-vent system shall be 
inspected in accordance with the requirements of Sec. 63.1258(h) and the 
control device shall be designed, operated, and inspected in accordance 
with the requirements of paragraph (h) of this section.
    (B) If the junction box is filled and emptied by gravity flow (i.e., 
there is no pump) or is operated with no more than slight fluctuations 
in the liquid level, the owner or operator may vent the junction box to 
the atmosphere provided that the junction box complies with the 
requirements in paragraphs (e)(4)(ii)(B) (1) and (2) of this section.
    (1) The vent pipe shall be at least 90 centimeters in length and no 
greater than 10.2 centimeters in nominal inside diameter.
    (2) Water seals shall be installed and maintained at the wastewater 
entrance(s) to or exit from the junction box restricting ventilation in 
the individual drain system and between components in the individual 
drain system. The owner or operator shall demonstrate (e.g., by visual 
inspection or smoke test) upon request by the Administrator that the 
junction box water seal is properly designed and restricts ventilation.
    (iii) Each sewer line shall not be open to the atmosphere and shall 
be covered or enclosed in a manner so as to have no visible gaps or 
cracks in joints, seals, or other emission interfaces. (Note: This 
provision applies to sewers located inside and outside of buildings.)
    (5) Equipment used to comply with paragraphs (e)(4) (i), (ii), or 
(iii) of this section shall be inspected as follows:
    (i) Each drain using a tightly fitting cap or plug shall be visually 
inspected initially, and semiannually thereafter, to ensure caps or 
plugs are in place and that there are no gaps, cracks, or other holes in 
the cap or plug.
    (ii) Each junction box shall be visually inspected initially, and 
semiannually thereafter, to ensure that there are no gaps, cracks, or 
other holes in the cover.
    (iii) The unburied portion of each sewer line shall be visually 
inspected initially, and semiannually thereafter, for indication of 
cracks or gaps that could result in air emissions.
    (6) Except as provided in paragraph (i) of this section, when a gap, 
hole, or crack is identified in a joint or cover, first efforts at 
repair shall be made no later than 5 calendar days after identification, 
and repair shall be completed

[[Page 52]]

within 15 calendar days after identification.
    (f) Oil-water separators. For each oil-water separator that 
receives, manages, or treats affected wastewater or a residual removed 
from affected wastewater, the owner or operator shall comply with the 
requirements of paragraphs (f)(1) through (6) of this section.
    (1) The owner or operator shall maintain one of the following:
    (i) A fixed roof and a closed-vent system that routes the organic 
HAP vapors vented from the oil-water separator to a control device. The 
fixed roof, closed-vent system, and control device shall meet the 
requirements specified in paragraph (f)(2) of this section;
    (ii) A floating roof that meets the requirements in 40 CFR 60.693-
2(a)(1)(i), (a)(1)(ii), (a)(2), (a)(3), and (a)(4). For portions of the 
oil-water separator where it is infeasible to construct and operate a 
floating roof, such as over the weir mechanism, the owner or operator 
shall operate and maintain a fixed roof, closed-vent system, and control 
device that meet the requirements specified in paragraph (f)(2) of this 
section.
    (2) A fixed roof shall meet the requirements of paragraph (f)(2)(i) 
of this section, a control device shall meet the requirements of 
paragraph (f)(2)(ii) of this section, and a closed-vent system shall 
meet the requirements of (f)(2)(iii) of this section.
    (i) The fixed roof shall meet the following requirements:
    (A) Except as provided in (f)(2)(iv) of this section, the fixed roof 
and all openings (e.g., access hatches, sampling ports, and gauge wells) 
shall be maintained in accordance with the requirements specified in 
Sec. 63.1258(h).
    (B) Each opening shall be maintained in a closed, sealed position 
(e.g., covered by a lid that is gasketed and latched) at all times that 
the oil-water separator contains affected wastewater or a residual 
removed from affected wastewater except when it is necessary to use the 
opening for sampling or removal, or for equipment inspection, 
maintenance, or repair.
    (ii) The control device shall be designed, operated, and inspected 
in accordance with the requirements of paragraph (h) of this section.
    (iii) Except as provided in paragraph (f)(2)(iv) of this section, 
the closed-vent system shall be inspected in accordance with the 
requirements of Sec. 63.1258(h).
    (iv) For any fixed-roof and closed-vent system that is operated and 
maintained under negative pressure, the owner or operator is not 
required to comply with the requirements of Sec. 63.1258(h).
    (3) If the owner or operator elects to comply with the requirements 
of paragraph (f)(1)(ii) of this section, seal gaps shall be measured 
according to the procedures specified in 40 CFR part 60, subpart QQQ 
Sec. 60.696(d)(1) and the schedule specified in paragraphs (f)(3)(i) and 
(ii) of this section.
    (i) Measurement of primary seal gaps shall be performed within 60 
calendar days after installation of the floating roof and introduction 
of affected wastewater or a residual removed from affected wastewater 
and once every 5 years thereafter.
    (ii) Measurement of secondary seal gaps shall be performed within 60 
calendar days after installation of the floating roof and introduction 
of affected wastewater or a residual removed from affected wastewater 
and once every year thereafter.
    (4) Each oil-water separator shall be inspected initially, and 
semiannually thereafter, for improper work practices in accordance with 
Sec. 63.1258(g). For oil-water separators, improper work practice 
includes, but is not limited to, leaving open or ungasketed any access 
door or other opening when such door or opening is not in use.
    (5) Each oil-water separator shall be inspected for control 
equipment failures as defined in paragraph (f)(5)(i) of this section 
according to the schedule specified in paragraphs (f)(5)(ii) and (iii) 
of this section.
    (i) For oil-water separators, control equipment failure includes, 
but is not limited to, the conditions specified in paragraphs 
(f)(5)(i)(A) through (G) of this section.
    (A) The floating roof is not resting on either the surface of the 
liquid or on the leg supports.

[[Page 53]]

    (B) There is stored liquid on the floating roof.
    (C) A rim seal is detached from the floating roof.
    (D) There are holes, tears, or other open spaces in the rim seal or 
seal fabric of the floating roof.
    (E) There are gaps between the primary seal and the separator wall 
that exceed 67 square centimeters per meter of separator wall perimeter 
or the width of any portion of any gap between the primary seal and the 
separator wall exceeds 3.8 centimeters.
    (F) There are gaps between the secondary seal and the separator wall 
that exceed 6.7 square centimeters per meter of separator wall perimeter 
or the width of any portion of any gap between the secondary seal and 
the separator wall exceeds 1.3 centimeters.
    (G) A gasket, joint, lid, cover, or door has a gap or crack, or is 
broken.
    (ii) The owner or operator shall inspect for the control equipment 
failures in paragraphs (f)(5)(i)(A) through (F) according to the 
schedule specified in paragraph (f)(3) of this section.
    (iii) The owner or operator shall inspect for control equipment 
failures in paragraph (f)(5)(i)(G) of this section initially, and 
semiannually thereafter.
    (6) Except as provided in paragraph (i) of this section, when an 
improper work practice or a control equipment failure is identified, 
first efforts at repair shall be made no later than 5 calendar days 
after identification and repair shall be completed within 45 calendar 
days after identification.
    (g) Performance standards for treatment processes managing 
wastewater and/or residuals removed from wastewater. This section 
specifies the performance standards for treating affected wastewater. 
The owner or operator shall comply with the requirements as specified in 
paragraphs (g)(1) through (6) of this section. Where multiple compliance 
options are provided, the options may be used in combination for 
different wastewater and/or for different compounds (e.g., soluble 
versus partially soluble compounds) in the same wastewater, except where 
otherwise provided in this section. Once affected wastewater or a 
residual removed from affected wastewater has been treated in accordance 
with this subpart, it is no longer subject to the requirements of this 
subpart.
    (1) Existing source. For a wastewater stream at an existing source 
that exceeds or is designated to exceed the concentration and load 
criteria in paragraph (a)(1)(i)(A) of this section, the owner or 
operator shall comply with a control option in paragraph (g)(8) of this 
section. For a wastewater stream at an existing source that exceeds the 
concentration and load criteria in either paragraph (a)(1)(i)(B) or (C) 
of this section, the owner or operator shall comply with a control 
option in paragraph (g)(8) of this section and a control option in 
paragraph (g)(9) of this section. As an alternative to the control 
options in paragraphs (g)(8) and (g)(9) of this section, the owner or 
operator may comply with a control option in either paragraph (g)(10), 
(11) or (13) of this section, as applicable.
    (2) New source. For a wastewater stream at a new source that exceeds 
or is designated to exceed the concentration and load criteria in 
paragraph (a)(1)(i)(A) of this section, the owner or operator shall 
comply with a control option in paragraph (g)(8) of this section. For 
wastewater at a new source that exceeds the concentration and load 
criteria in either paragraph (a)(1)(i)(B) or (C) of this section, but 
does not exceed the criteria in paragraph (a)(1)(i)(D) of this section, 
the owner or operator shall comply with a control option in paragraph 
(g)(8) of this section and a control option in paragraph (g)(9) of this 
section. As an alternative to the control options in paragraphs (g)(8) 
and/or (9) of this section, the owner or operator may comply with a 
control option in either paragraph (g)(10), (11), or (13) of this 
section, as applicable. For a wastewater stream at a new source that 
exceeds or is designated to exceed the concentration and load criteria 
in paragraph (a)(1)(i)(D) of this section, the owner or operator shall 
comply with a control option in paragraph (g)(12) or (13) of this 
section.
    (3) Biological treatment processes. Biological treatment processes 
in compliance with this section may be either open or closed biological 
treatment processes as defined in Sec. 63.1251. An open biological 
treatment process in

[[Page 54]]

compliance with this section need not be covered and vented to a control 
device. An open or a closed biological treatment process in compliance 
with this section and using Sec. 63.1257(e)(2)(iii)(E) or (F) to 
demonstrate compliance is not subject to the requirements of paragraphs 
(b) and (c) of this section. A closed biological treatment process in 
compliance with this section and using Sec. 63.1257(e)(2)(iii)(G) to 
demonstrate compliance shall comply with the requirements of paragraphs 
(b) and (c) of this section. Waste management units upstream of an open 
or closed biological treatment process shall meet the requirements of 
paragraphs (b) through (f) of this section, as applicable.
    (4) Performance tests and design evaluations. If the Resource 
Conservation and Recovery Act (RCRA) option [paragraph (g)(13) of this 
section] or the enhanced biological treatment process for soluble HAP 
compounds option [paragraph (g)(10) of this section] is selected to 
comply with this section, neither a design evaluation nor a performance 
test is required. For any other nonbiological treatment process, and for 
closed biological treatment processes as defined in Sec. 63.1251, the 
owner or operator shall conduct either a design evaluation as specified 
in Sec. 63.1257(e)(2)(ii) or performance test as specified in 
Sec. 63.1257(e)(2)(iii). For each open biological treatment process as 
defined in Sec. 63.1251, the owner or operator shall conduct a 
performance test as specified in Sec. 63.1257(e)(2)(iii)(E) or (F).
    (5) Control device requirements. When gases are vented from the 
treatment process, the owner or operator shall comply with the 
applicable control device requirements specified in paragraph (h) of 
this section and Sec. 63.1257(e)(3), and the applicable leak inspection 
provisions specified in Sec. 63.1258(h). This requirement is in addition 
to the requirements for treatment systems specified in paragraphs (g)(8) 
through (14) of this section. This requirement does not apply to any 
open biological treatment process that meets the mass removal 
requirements.
    (6) Residuals: general. When residuals result from treating affected 
wastewater, the owner or operator shall comply with the requirements for 
residuals specified in paragraph (g)(14) of this section.
    (7) Treatment using a series of treatment processes. In all cases 
where the wastewater provisions in this subpart allow or require the use 
of a treatment process or control device to comply with emissions 
limitations, the owner or operator may use multiple treatment processes 
or control devices, respectively. For combinations of treatment 
processes where the wastewater stream is conveyed by hard-piping, the 
owner or operator shall comply with either the requirements of paragraph 
(g)(7)(i) or (ii) of this section. For combinations of treatment 
processes where the wastewater stream is not conveyed by hard-piping, 
the owner or operator shall comply with the requirements of paragraph 
(g)(7)(ii) of this section. For combinations of control devices, the 
owner or operator shall comply with the requirements of paragraph 
(g)(7)(i) of this section.
    (i) Compliance across the combination of all treatment units or 
control devices in series. (A) For combinations of treatment processes, 
the wastewater stream shall be conveyed by hard-piping between the 
treatment processes. For combinations of control devices, the vented gas 
stream shall be conveyed by hard-piping between the control devices.
    (B) For combinations of treatment processes, each treatment process 
shall meet the applicable requirements of paragraphs (b) through (f) of 
this section, except as provided in paragraph (g)(3) of this section.
    (C) The owner or operator shall identify, and keep a record of, the 
combination of treatment processes or of control devices, including 
identification of the first and last treatment process or control 
device. The owner or operator shall include this information as part of 
the treatment process description reported in the Notification of 
Compliance Status.
    (D) The performance test or design evaluation shall determine 
compliance across the combination of treatment processes or control 
devices. If a performance test is conducted, the ``inlet'' shall be the 
point at which the wastewater stream or residual enters the

[[Page 55]]

first treatment process, or the vented gas stream enters the first 
control device. The ``outlet'' shall be the point at which the treated 
wastewater stream exits the last treatment process, or the vented gas 
stream exits the last control device.
    (ii) Compliance across individual units. (A) For combinations of 
treatment processes, each treatment process shall meet the applicable 
requirements of paragraphs (b) through (f) of this section except as 
provided in paragraph (g)(3) of this section.
    (B) The owner or operator shall identify, and keep a record of, the 
combination of treatment processes, including identification of the 
first and last treatment process. The owner or operator shall include 
this information as part of the treatment process description reported 
in the Notification of Compliance Status report.
    (C) The owner or operator shall determine the mass removed or 
destroyed by each treatment process. The performance test or design 
evaluation shall determine compliance for the combination of treatment 
processes by adding together the mass removed or destroyed by each 
treatment process and determine the overall control efficiency of the 
treatment system.
    (8) Control options: Wastewater containing partially soluble HAP 
compounds. The owner or operator shall comply with either paragraph 
(g)(8)(i) or (ii) of this section for the control of partially soluble 
HAP compounds at new or existing sources.
    (i) 50 ppmw concentration option. The owner or operator shall comply 
with paragraphs (g)(8)(i)(A) and (B) of this section.
    (A) Reduce, by removal or destruction, the concentration of total 
partially soluble HAP compounds to a level less than 50 ppmw as 
determined by the procedures specified in Sec. 63.1257(e)(2)(iii)(B).
    (B) This option shall not be used when the treatment process is a 
biological treatment process. This option shall not be used when the 
wastewater is designated as an affected wastewater as specified in 
paragraph (a)(1)(ii) of this section. Dilution shall not be used to 
achieve compliance with this option.
    (ii) Percent mass removal/destruction option. The owner or operator 
shall reduce, by removal or destruction, the mass of total partially 
soluble HAP compounds by 99 percent or more. The removal destruction 
efficiency shall be determined by the procedures specified in 
Sec. 63.1257(e)(2)(iii)(C), for noncombustion, nonbiological treatment 
processes; Sec. 63.1257(e)(2)(iii)(D), for combustion processes; and 
Sec. 63.1257(e)(2)(iii)(F) or (G) for biological treatment processes.
    (9) Control options: Wastewater containing soluble HAP compounds. 
The owner or operator shall comply with either paragraph (g)(9)(i) or 
(ii) of this section for the control of soluble HAP compounds at new or 
existing sources.
    (i) 520 ppmw concentration option. The owner or operator shall 
comply with paragraphs (g)(9)(i)(A) and (B) of this section.
    (A) Reduce, by removal or destruction, the concentration of total 
soluble HAP compounds to a level less than 520 ppmw as determined in the 
procedures specified in Sec. 63.1257(e)(2)(iii)(B).
    (B) This option shall not be used when the treatment process is a 
biological treatment process. This option shall not be used when the 
wastewater is designated as an affected wastewater as specified in 
paragraph (a)(1)(ii) of this section. Dilution shall not be used to 
achieve compliance with this option.
    (ii) Percent mass removal/destruction option. The owner or operator 
shall reduce, by removal or destruction, the mass of total soluble HAP 
by 90 percent or more. The removal/destruction efficiency shall be 
determined by the procedures in Sec. 63.1257(e)(2)(iii)(C), for 
noncombustion, nonbiological treatment processes; 
Sec. 63.1257(e)(2)(iii)(D), for combustion processes; and 
Sec. 63.1257(e)(2)(iii)(F) or (G) for biological treatment processes.
    (10) Control option: Enhanced biotreatment for wastewater containing 
soluble HAP. The owner or operator may elect to treat affected 
wastewater streams containing soluble HAP and less than 50 ppmw 
partially soluble HAP in an enhanced biological treatment system, as 
defined in Sec. 63.1251. This option shall not be used when the 
wastewater is designated as an affected wastewater as specified in 
paragraph (a)(1)(ii) of

[[Page 56]]

this section. These treatment processes are exempt from the design 
evaluation or performance tests requirements specified in paragraph 
(g)(4) of this section.
    (11) 95-percent mass reduction option, for biological treatment 
processes. The owner or operator of a new or existing source using 
biological treatment for any affected wastewater shall reduce the mass 
of total soluble and partially soluble HAP sent to that biological 
treatment unit by at least 95 percent. All wastewater as defined in 
Sec. 63.1251 entering such a biological treatment unit from PMPU's 
subject to this subpart shall be included in the demonstration of the 
95-percent mass removal. The owner or operator shall comply with 
paragraphs (g)(11)(i) through (iv) of this section.
    (i) Except as provided in paragraph (g)(11)(iv) of this section, the 
owner or operator shall ensure that all wastewater from PMPU's subject 
to this subpart entering a biological treatment unit are treated to 
destroy at least 95-percent total mass of all soluble and partially 
soluble HAP compounds.
    (ii) For open biological treatment processes, compliance shall be 
determined using the procedures specified in Sec. 63.1257(e)(2)(iii)(E). 
For closed aerobic biological treatment processes compliance shall be 
determined using the procedures specified in Sec. 63.1257(e)(2)(iii)(E) 
or (G). For closed anaerobic biological treatment processes compliance 
shall be determined using the procedures specified in 
Sec. 63.1257(e)(2)(iii)(G).
    (iii) For each treatment process or waste management unit that 
receives, manages, or treats wastewater subject to this paragraph, from 
the POD to the biological treatment unit, the owner or operator shall 
comply with paragraphs (b) through (f) of this section for control of 
air emissions. When complying with this paragraph, the term affected 
wastewater in paragraphs (b) through (f) of this section shall mean all 
wastewater from PMPU's, not just affected wastewater.
    (iv) If wastewater is in compliance with the requirements in 
paragraph (g)(8), (9), or (12) of this section before entering the 
biological treatment unit, the hazardous air pollutants mass of that 
wastewater is not required to be included in the total mass flow rate 
entering the biological treatment unit for the purpose of demonstrating 
compliance.
    (12) Percent mass removal/destruction option for soluble HAP 
compounds at new sources. The owner or operator of a new source shall 
reduce, by removal or destruction, the mass flow rate of total soluble 
HAP from affected wastewater by 99 percent or more. The removal/
destruction efficiency shall be determined by the procedures in 
Sec. 63.1257(e)(2)(iii)(C), for noncombustion, nonbiological treatment 
processes; Sec. 63.1257(e)(2)(iii)(D), for combustion processes; and 
Sec. 63.1257(e)(2)(iii)(F) or (G) for biological treatment processes.
    (13) Treatment in a RCRA unit option. The owner or operator shall 
treat the affected wastewater or residual in a unit identified in, and 
complying with, paragraph (g)(13)(i), (ii), or (iii) of this section. 
These units are exempt from the design evaluation or performance tests 
requirements specified in paragraph (g)(4) of this section and 
Sec. 63.1257(e)(2), and from the monitoring requirements specified in 
paragraph (a)(2)(iii) of this section, as well as recordkeeping and 
reporting requirements associated with monitoring and performance tests.
    (i) The wastewater or residual is discharged to a hazardous waste 
incinerator for which the owner or operator has been issued a final 
permit under 40 CFR part 270 and complies with the requirements of 40 
CFR part 264, subpart O, or has certified compliance with the interim 
status requirements of 40 CFR part 265, subpart O;
    (ii) The wastewater or residual is discharged to a process heater or 
boiler burning hazardous waste for which the owner or operator:
    (A) Has been issued a final permit under 40 CFR part 270 and 
complies with the requirements of 40 CFR part 266, subpart H; or
    (B) Has certified compliance with the interim status requirements of 
40 CFR part 266, subpart H.
    (iii) The wastewater or residual is discharged to an underground 
injection well for which the owner or operator has been issued a final 
permit under 40 CFR part 270 or 40 CFR part 144 and

[[Page 57]]

complies with the requirements of 40 CFR part 122. The owner or operator 
shall comply with all applicable requirements of this subpart prior to 
the point where the wastewater enters the underground portion of the 
injection well.
    (14) Residuals. For each residual removed from affected wastewater, 
the owner or operator shall control for air emissions by complying with 
paragraphs (b) through (f) of this section and by complying with one of 
the provisions in paragraphs (g)(14)(i) through (iv) of this section.
    (i) Recycle the residual to a production process or sell the 
residual for the purpose of recycling. Once a residual is returned to a 
production process, the residual is no longer subject to this section.
    (ii) Return the residual to the treatment process.
    (iii) Treat the residual to destroy the total combined mass flow 
rate of soluble and/or partially soluble HAP compounds by 99 percent or 
more, as determined by the procedures specified in 
Sec. 63.1257(e)(2)(iii)(C) or (D).
    (iv) Comply with the requirements for RCRA treatment options 
specified in paragraph (g)(13) of this section.
    (h) Control devices. For each control device or combination of 
control devices used to comply with the provisions in paragraphs (b) 
through (f) and (g)(5) of this section, the owner or operator shall 
operate and maintain the control device or combination of control 
devices in accordance with the requirements of paragraphs (h) (1) 
through (4) of this section.
    (1) Whenever organic HAP emissions are vented to a control device 
which is used to comply with the provisions of this subpart, such 
control device shall be operating.
    (2) The control device shall be designed and operated in accordance 
with paragraph (h)(2) (i), (ii), (iii), (iv), or (v) of this section, as 
demonstrated by the provisions in Sec. 63.1257(e)(3).
    (i) An enclosed combustion device (including but not limited to a 
vapor incinerator, boiler, or process heater) shall meet the conditions 
in paragraph (h)(2)(i) (A), (B), or (C) of this section, alone or in 
combination with other control devices. If a boiler or process heater is 
used as the control device, then the vent stream shall be introduced 
into the flame zone of the boiler or process heater.
    (A) Reduce the organic HAP emissions vented to the control device by 
95 percent by weight or greater;
    (B) Achieve an outlet TOC concentration of 20 ppmv on a dry basis 
corrected to 3 percent oxygen. The owner or operator shall use either 
Method 18 of 40 CFR part 60, appendix A, or any other method or data 
that has been validated according to the applicable procedures in Method 
301 of appendix A of this part; or
    (C) Provide a minimum residence time of 0.5 seconds at a minimum 
temperature of 760 deg.C.
    (ii) A vapor recovery system (including but not limited to a carbon 
adsorption system or condenser), alone or in combination with other 
control devices, shall reduce the organic HAP emissions vented to the 
control device by 95 percent by weight or greater or achieve an outlet 
TOC concentration of 20 ppmv. The 20 ppmv performance standard is not 
applicable to compliance with the provisions of paragraphs (c) or (d) of 
this section.
    (iii) A flare shall comply with the requirements of Sec. 63.11(b).
    (iv) A scrubber, alone or in combination with other control devices, 
shall reduce the organic HAP emissions in such a manner that 95 weight-
percent is either removed, or destroyed by chemical reaction with the 
scrubbing liquid, or achieve an outlet TOC concentration of 20 ppmv. The 
20 ppmv performance standard is not applicable to compliance with the 
provisions of paragraphs (c) or (d) of this section.
    (v) Any other control device used shall, alone or in combination 
with other control devices, reduce the organic HAP emissions vented to 
the control device by 95 percent by weight or greater or achieve an 
outlet TOC concentration of 20 ppmv. The 20 ppmv performance standard is 
not applicable to compliance with the provisions of paragraphs (c) or 
(d) of this section.
    (3) If the control device is a combustion device, the owner or 
operator shall comply with the requirements in Sec. 63.1252(g) to 
control halogenated vent streams.

[[Page 58]]

    (4) Except as provided in paragraph (i) of this section, if gaps, 
cracks, tears, or holes are observed in ductwork, piping, or connections 
to covers and control devices during an inspection, a first effort to 
repair shall be made as soon as practical but no later than 5 calendar 
days after identification. Repair shall be completed no later than 15 
calendar days after identification or discovery of the defect.
    (i) Delay of repair. Delay of repair of equipment for which a 
control equipment failure or a gap, crack, tear, or hole has been 
identified, is allowed if the repair is technically infeasible without a 
shutdown, as defined in Sec. 63.1251, or if the owner or operator 
determines that emissions of purged material from immediate repair would 
be greater than the emissions likely to result from delay of repair. 
Repair of this equipment shall occur by the end of the next shutdown.
    (1) Delay of repair of equipment for which a control equipment 
failure or a gap, crack, tear, or hole has been identified, is allowed 
if the equipment is emptied or is no longer used to treat or manage 
affected wastewater or residuals removed from affected wastewater.
    (2) Delay of repair of equipment for which a control equipment 
failure or a gap, crack, tear, or hole has been identified is also 
allowed if additional time is necessary due to the unavailability of 
parts beyond the control of the owner or operator. Repair shall be 
completed as soon as practical. The owner or operator who uses this 
provision shall comply with the requirements of Sec. 63.1259(h) to 
document the reasons that the delay of repair was necessary.



Sec. 63.1257   Test methods and compliance procedures.

    (a) General. Except as specified in paragraph (a)(5) of this 
section, the procedures specified in paragraphs (c), (d), (e), and (f) 
of this section are required to demonstrate initial compliance with 
Secs. 63.1253, 63.1254, 63.1256, and 63.1252(e), respectively. The 
provisions in paragraphs (a) (2) through (3) apply to performance tests 
that are specified in paragraphs (c), (d), and (e) of this section. The 
provisions in paragraph (a)(5) of this section are used to demonstrate 
initial compliance with the alternative standards specified in 
Secs. 63.1253(d) and 63.1254(c). The provisions in paragraph (a)(6) of 
this section are used to comply with the outlet concentration 
requirements specified in Secs. 63.1253(c), 63.1254 (a)(2)(i) and 
(a)(3)(ii)(B), 63.1254(b)(i) and 63.1256(h)(2).
    (1) Design evaluation. To demonstrate that a control device meets 
the required control efficiency, a design evaluation must address the 
composition and organic HAP concentration of the vent stream entering 
the control device. A design evaluation also must address other vent 
stream characteristics and control device operating parameters as 
specified in any one of paragraphs (a)(1) (i) through (vi) of this 
section, depending on the type of control device that is used. If the 
vent stream is not the only inlet to the control device, the efficiency 
demonstration also must consider all other vapors, gases, and liquids, 
other than fuels, received by the control device.
    (i) For an enclosed combustion device used to comply with the 
provisions of 63.1253 (b)(2) or (c)(2), or 63.1256(h)(2)(i)(C) with a 
minimum residence time of 0.5 seconds and a minimum temperature of 
760 deg.C, the design evaluation must document that these conditions 
exist.
    (ii) For a combustion control device that does not satisfy the 
criteria in paragraph (a)(1)(i) of this section, the design evaluation 
must document control efficiency and address the following 
characteristics, depending on the type of control device:
    (A) For a thermal vapor incinerator, the design evaluation must 
consider the autoignition temperature of the organic HAP, must consider 
the vent stream flow rate, and must establish the design minimum and 
average temperature in the combustion zone and the combustion zone 
residence time.
    (B) For a catalytic vapor incinerator, the design evaluation shall 
consider the vent stream flow rate and shall establish the design 
minimum and average temperatures across the catalyst bed inlet and 
outlet.
    (C) For a boiler or process heater, the design evaluation shall 
consider the vent stream flow rate; shall establish the design minimum 
and average flame

[[Page 59]]

zone temperatures and combustion zone residence time; and shall describe 
the method and location where the vent stream is introduced into the 
flame zone.
    (iii) For a condenser, the design evaluation shall consider the vent 
stream flow rate, relative humidity, and temperature and shall establish 
the design outlet organic HAP compound concentration level, design 
average temperature of the condenser exhaust vent stream, and the design 
average temperatures of the coolant fluid at the condenser inlet and 
outlet. The temperature of the gas stream exiting the condenser must be 
measured and used to establish the outlet organic HAP concentration.
    (iv) For a carbon adsorption system that regenerates the carbon bed 
directly onsite in the control device such as a fixed-bed adsorber, the 
design evaluation shall consider the vent stream flow rate, relative 
humidity, and temperature and shall establish the design exhaust vent 
stream organic compound concentration level, adsorption cycle time, 
number and capacity of carbon beds, type and working capacity of 
activated carbon used for carbon beds, design total regeneration stream 
mass or volumetric flow over the period of each complete carbon bed 
regeneration cycle, design carbon bed temperature after regeneration, 
design carbon bed regeneration time, and design service life of carbon. 
For vacuum desorption, the pressure drop shall be included.
    (v) For a carbon adsorption system that does not regenerate the 
carbon bed directly onsite in the control device such as a carbon 
canister, the design evaluation shall consider the vent stream mass or 
volumetric flow rate, relative humidity, and temperature and shall 
establish the design exhaust vent stream organic compound concentration 
level, capacity of carbon bed, type and working capacity of activated 
carbon used for carbon bed, and design carbon replacement interval based 
on the total carbon working capacity of the control device and source 
operating schedule.
    (vi) For a scrubber, the design evaluation shall consider the vent 
stream composition; constituent concentrations; liquid-to-vapor ratio; 
scrubbing liquid flow rate and concentration; temperature; and the 
reaction kinetics of the constituents with the scrubbing liquid. The 
design evaluation shall establish the design exhaust vent stream organic 
compound concentration level and will include the additional information 
in paragraphs (a)(1)(vi)(A) and (B) of this section for trays and a 
packed column scrubber.
    (A) Type and total number of theoretical and actual trays;
    (B) Type and total surface area of packing for entire column, and 
for individual packed sections if column contains more than one packed 
section.
    (2) Calculation of TOC or total organic HAP concentration. The TOC 
concentration or total organic HAP concentration is the sum of the 
concentrations of the individual components. If compliance is being 
determined based on TOC, the owner or operator shall compute TOC for 
each run using Equation 6 of this subpart. If compliance with the 
wastewater provisions is being determined based on total organic HAP, 
the owner or operator shall compute total organic HAP using Equation 6 
of this subpart, except that only the organic HAP compounds shall be 
summed; when determining compliance with paragraph (e)(3)(i) of this 
section, only the soluble and partially soluble HAP compounds shall be 
summed.
[GRAPHIC] [TIFF OMITTED] TR21SE98.003

where:
    CGT=total concentration of TOC in vented gas stream, 
average of samples, dry basis, ppmv
CGSi,j=concentration of sample components in vented gas 
stream for sample j, dry basis, ppmv
i=identifier for a compound
n=number of components in the sample
j=identifier for a sample
m=number of samples in the sample run

    (3) Percent oxygen correction for combustion control devices. If the 
control device is a combustion device, the TOC or total organic HAP 
concentrations must be corrected to 3 percent oxygen. The

[[Page 60]]

integrated sampling and analysis procedures of Method 3B of 40 CFR part 
60, appendix A shall be used to determine the actual oxygen 
concentration (%02d). The samples shall be taken during the 
same time that the TOC or total organic HAP samples are taken. The 
concentration corrected to 3 percent oxygen (Cd) shall be 
computed using Equation 7 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.004

where:

Cc = concentration of TOC or total organic HAP corrected to 3 
percent oxygen, dry basis, ppmv
Cm = total concentration of TOC in vented gas stream, average 
of samples, dry basis, ppmv
%02d = concentration of oxygen measured in vented gas stream, 
dry basis, percent by volume

    (4) Exemptions from compliance demonstrations. An owner or operator 
using any control device specified in paragraphs (a)(4)(i) through (iv) 
of this section is exempt from the initial compliance provisions in 
paragraphs (c), (d), and (e) of this section.
    (i) A boiler or process heater with a design heat input capacity of 
44 megawatts or greater.
    (ii) A boiler or process heater into which the emission stream is 
introduced with the primary fuel.
    (iii) A boiler or process heater burning hazardous waste for which 
the owner or operator:
    (A) Has been issued a final permit under 40 CFR part 270 and 
complies with the requirements of 40 CFR part 266, subpart H, or
    (B) Has certified compliance with the interim status requirements of 
40 CFR part 266, subpart H.
    (iv) A hazardous waste incinerator for which the owner or operator 
has been issued a final permit under 40 CFR part 270 and complies with 
the requirements of 40 CFR part 264, subpart O, or has certified 
compliance with the interim status requirements of 40 CFR part 265, 
subpart O.
    (5) Initial compliance with alternative standard. Initial compliance 
with the alternative standards in Secs. 63.1253(d) and 63.1254(c) is 
demonstrated when the outlet TOC concentration is 20 ppmv or less, and 
the outlet hydrogen halide and halogen concentration is 20 ppmv or less. 
To demonstrate initial compliance, the owner or operator shall be in 
compliance with the monitoring provisions in Sec. 63.1258(b)(5) on the 
initial compliance date. The owner or operator shall use Method 18 to 
determine the predominant organic HAP in the emission stream if the TOC 
monitor is calibrated on the predominant HAP.
    (6) Initial compliance with the 20 ppmv outlet limit. Initial 
compliance with the 20 ppmv TOC and hydrogen halide and halogen 
concentration is demonstrated when the outlet TOC concentration is 20 
ppmv or less, and the outlet hydrogen halide and halogen concentration 
is 20 ppmv or less. To demonstrate initial compliance, the operator 
shall use test methods described in paragraph (b) of this section. The 
owner or operator shall comply with the monitoring provisions in 
Sec. 63.1258(b)(1) through (5) of this subpart on the initial compliance 
date.
    (b) Test methods. When testing is conducted to measure emissions 
from an affected source, the test methods specified in paragraphs (b)(1) 
through (10) of this section shall be used.
    (1) EPA Method 1 or 1A of appendix A of part 60 is used for sample 
and velocity traverses.
    (2) EPA Method 2, 2A, 2C, or 2D of appendix A of part 60 is used for 
velocity and volumetric flow rates.
    (3) EPA Method 3 of appendix A of part 60 is used for gas analysis.
    (4) EPA Method 4 of appendix A of part 60 is used for stack gas 
moisture.
    (5) [Reserved]
    (6) Concentration measurements shall be adjusted to negate the 
dilution effects of introducing nonaffected gaseous streams into the 
vent streams prior to control or measurement. The following methods are 
specified for concentration measurements:
    (i) Method 18 may be used to determine HAP concentration in any 
control device efficiency determination.
    (ii) Method 25 of appendix A of part 60 may be used to determine 
total gaseous nonmethane organic concentration for control efficiency 
determinations in combustion devices.

[[Page 61]]

    (iii) Method 26 of appendix A of part 60 shall be used to determine 
hydrogen chloride concentrations in control device efficiency 
determinations or in the 20 ppmv outlet hydrogen halide concentration 
standard.
    (iv) Method 25A of appendix A of part 60 may be used to determine 
the HAP or TOC concentration for control device efficiency 
determinations under the conditions specified in Method 25 of appendix A 
for direct measurement of an effluent with a flame ionization detector, 
or in demonstrating compliance with the 20 ppmv TOC outlet standard. If 
Method 25A is used to determine the concentration of TOC for the 20 ppmv 
standard, the instrument shall be calibrated on methane or the 
predominant HAP. If calibrating on the predominant HAP, the use of 
Method 25A shall comply with paragraphs (b)(6)(iv)(A) through (C) of 
this section.
    (A) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A, shall be the single organic HAP representing 
the largest percent by volume.
    (B) The use of Method 25A, 40 CFR part 60, appendix A, is acceptable 
if the response from the high level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (C) The span value of the analyzer must be less than 100 ppmv.
    (7) Testing conditions for continuous processes. Testing of 
emissions on equipment operating as part of a continuous process will 
consist of three l-hour runs. Gas stream volumetric flow rates shall be 
measured every 15 minutes during each 1-hour run. The HAP concentration 
shall be determined from samples collected in an integrated sample over 
the duration of each l-hour test run, or from grab samples collected 
simultaneously with the flow rate measurements (every 15 minutes). If an 
integrated sample is collected for laboratory analysis, the sampling 
rate shall be adjusted proportionally to reflect variations in flow 
rate. For continuous gas streams, the emission rate used to determine 
compliance shall be the average emission rate of the three test runs.
    (8) Testing and compliance determination conditions for batch 
processes. Testing of emissions on equipment where the flow of gaseous 
emissions is intermittent (batch operations) shall be conducted as 
specified in paragraphs (b)(8)(i) through (iii) of this section.
    (i) Except as provided in paragraph (b)(9) of this section for 
condensers, testing shall be conducted at absolute worst-case conditions 
or hypothetical worst-case conditions. Gas stream volumetric flow rates 
shall be measured at 15-minute intervals. The HAP or TOC concentration 
shall be determined from samples collected in an integrated sample over 
the duration of the test, or from grab samples collected simultaneously 
with the flow rate measurements (every 15 minutes). If an integrated 
sample is collected for laboratory analysis, the sampling rate shall be 
adjusted proportionally to reflect variations in flow rate. The absolute 
worst-case or hypothetical worst-case conditions shall be characterized 
by the criteria presented in paragraphs (b)(8)(i)(A) and (B)of this 
section. In all cases, a site-specific plan shall be submitted to the 
Administrator for approval prior to testing in accordance with 
Sec. 63.7(c) and Sec. 63.1260(l). The test plan shall include the 
emission profile described in paragraph (b)(8)(ii) of this section.
    (A) Absolute worst-case conditions are defined by the criteria 
presented in paragraph (b)(8)(i)(A)(1) or (2) of this section if the 
maximum load is the most challenging condition for the control device. 
Otherwise, absolute worst-case conditions are defined by the conditions 
in paragraph (b)(8)(i)(A)(3) of this section.
    (1) The period in which the inlet to the control device will contain 
at least 50 percent of the maximum HAP load (in lb) capable of being 
vented to the control device over any 8 hour period. An emission profile 
as described in paragraph (b)(8)(ii)(A) of this section shall be used to 
identify the 8-hour period that includes the maximum projected HAP load.
    (2) A 1-hour period of time in which the inlet to the control device 
will contain the highest HAP mass loading rate, in lb/hr, capable of 
being vented

[[Page 62]]

to the control device. An emission profile as described in paragraph 
(b)(8)(ii)(A) of this section shall be used to identify the 1-hour 
period of maximum HAP loading.
    (3) The period of time when the HAP loading or stream composition 
(including non-HAP) is most challenging for the control device. These 
conditions include, but are not limited to the following:
    (i) Periods when the stream contains the highest combined VOC and 
HAP load, in lb/hr, described by the emission profiles in (b)(8)(ii);
    (ii) Periods when the streams contain HAP constituents that approach 
limits of solubility for scrubbing media;
    (iii) Periods when the streams contain HAP constituents that 
approach limits of adsorptivity for carbon adsorption systems.
    (B) Hypothetical worst-case conditions are simulated test conditions 
that, at a minimum, contain the highest hourly HAP load of emissions 
that would be predicted to be vented to the control device from the 
emissions profile described in paragraph (b)(8)(ii)(B) or (C) of this 
section.
    (ii) Emissions profile. The owner or operator may choose to perform 
tests only during those periods of the worst-case conditions that the 
owner or operator selects to control as part of achieving the required 
emission reduction. The owner or operator must develop an emission 
profile for the vent to the control device that describes the 
characteristics of the vent stream at the inlet to the control device 
under worst case conditions. The emission profile shall be developed 
based on any one of the procedures described in (b)(8)(ii)(A) through 
(C) of this section, as required by paragraph (b)(8)(i).
    (A) Emission profile by process. The emission profile must consider 
all emission episodes that could contribute to the vent stack for a 
period of time that is sufficient to include all processes venting to 
the stack and shall consider production scheduling. The profile shall 
describe the HAP load to the device that equals the highest sum of 
emissions from the episodes that can vent to the control device in any 
given hour. Emissions per episode shall be calculated using the 
procedures specified in paragraph (d)(2) of this section. Emissions per 
episode shall be divided by the duration of the episode only if the 
duration of the episode is longer than 1 hour.
    (B) Emission profile by equipment. The emission profile must consist 
of emissions that meet or exceed the highest emissions, in lb/hr, that 
would be expected under actual processing conditions. The profile shall 
describe equipment configurations used to generate the emission events, 
volatility of materials processed in the equipment, and the rationale 
used to identify and characterize the emission events. The emissions may 
be based on using a compound more volatile than compounds actually used 
in the process(es), and the emissions may be generated from all 
equipment in the process(es) or only selected equipment.
    (C) Emission profile by capture and control device limitation. The 
emission profile shall consider the capture and control system 
limitations and the highest emissions, in lb/hr, that can be routed to 
the control device, based on maximum flowrate and concentrations 
possible because of limitations on conveyance and control equipment 
(e.g., fans, LEL alarms and safety bypasses).
    (iii) Three runs, at a minimum of 1 hour each and a maximum of 8 
hours each, are required for performance testing. Each run must occur 
over the same worst-case conditions, as defined in paragraph (b)(8)(i) 
of this section.
    (9) Testing requirements for condensers. For emission streams 
controlled using condensers, continuous direct measurement of condenser 
outlet gas temperature to be used in determining concentrations per the 
design evaluation described in Sec. 63.1257(a)(1)(iii) is required.
    (10) Wastewater testing. Wastewater analysis shall be conducted in 
accordance with paragraph (b)(10)(i), (ii), (iii), or (iv) of this 
section.
    (i) Method 305. Use procedures specified in Method 305 of 40 CFR 
part 63, appendix A and comply with requirements specified in paragraph 
(b)(10)(v) of this section.
    (ii) Method 624, 625, 1624, 1625, or 8270. Use procedures specified 
in Method 624, 625, 1624, 1625, or 8270 of 40 CFR part 136,

[[Page 63]]

appendix A and comply with requirements in paragraph (b)(10)(v) of this 
section.
    (iii) Other EPA Methods. Use procedures specified in the method, 
validate the method using the procedures in paragraph (b)(10)(iii)(A) or 
(B) of this section, and comply with the procedures in paragraph 
(b)(10)(v) of this section.
    (A) Validate the method according to section 5.1 or 5.3 of Method 
301 of 40 CFR part 63, appendix A.
    (B) Follow the procedure as specified in ``Alternative Validation 
Procedure for EPA Waste Methods'' 40 CFR part 63, appendix D.
    (iv) Methods other than an EPA method. Use procedures specified in 
the method, validate the method using the procedures in paragraph 
(b)(10)(iii)(A) of this section, and comply with the requirements in 
paragraph (b)(10)(v) of this section.
    (v) Sampling plan. The owner or operator shall prepare a sampling 
plan. Wastewater samples shall be collected using sampling procedures 
which minimize loss of organic compounds during sample collection and 
analysis and maintain sample integrity. The sample plan shall include 
procedures for determining recovery efficiency of the relevant partially 
soluble and soluble HAP compounds. An example of an acceptable sampling 
plan would be one that incorporates similar sampling and sample handling 
requirements to those of Method 25D of 40 CFR part 60, appendix A. The 
sampling plan shall be maintained at the facility.
    (c) Initial compliance with storage tank provisions. The owner or 
operator of an affected storage tank shall demonstrate initial 
compliance with Sec. 63.1253(b) or (c), as applicable, by fulfilling the 
requirements of paragraph (c)(1),or (c)(2), or (c)(3) of this section.
    (1) Performance test. If this option is chosen to demonstrate 
initial compliance with the percent reduction requirement of 
Sec. 63.1253(b)(1) or (c)(1)(i), the efficiency of the control device 
shall be calculated using performance test data as specified in 
paragraphs (c)(1)(i) through (iii) of this section. Initial compliance 
with the outlet concentration requirement of Sec. 63.1253(b)(2) or 
(c)(1)(ii) is demonstrated by fulfilling the requirements of paragraph 
(a)(6) of this section.
    (i) Equations 8 and 9 of this subpart shall be used to calculate the 
mass rate of total HAP reasonably expected maximum filling rate at the 
inlet and outlet of the control device for standard conditions of 
20 deg.C: where:
[GRAPHIC] [TIFF OMITTED] TR21SE98.005

[GRAPHIC] [TIFF OMITTED] TR21SE98.006

where:

Cij, Coj = concentration of sample component j of 
the gas stream at the inlet and outlet of the control device, 
respectively, dry basis, ppmv
Ei, Eo = mass rate of total HAP at the inlet and 
outlet of the control device, respectively, dry basis, kg/hr
Mij, Moj = molecular weight of sample component j 
of the gas stream at the inlet and outlet of the control device, 
respectively, gram/gram-mole
Qi, Qo = flow rate of gas stream at the inlet and 
outlet of the control device, respectively, dry standard cubic meter per 
minute
K2 = constant, 2.494  x  10-6 (parts per million) 
-1 (gram-mole per standard cubic meter) (kilogram/gram) 
(minute/hour), where standard temperature is 20 deg.C
n = number of sample components in the gas stream

    (ii) The percent reduction in total HAP shall be calculated using 
Equation 10 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.007

where:

R = control efficiency of control device, percent
Ei = mass rate of total HAP at the inlet to the control 
device as calculated under paragraph (c)(1)(i) of this section, 
kilograms organic HAP per hour

[[Page 64]]

Eo = mass rate of total HAP at the outlet of the control 
device, as calculated under paragraph (c)(1)(i) of this section, 
kilograms organic HAP per hour

    (iii) A performance test is not required to be conducted if the 
control device used to comply with Sec. 63.1253 (storage tank 
provisions) is also used to comply with Sec. 63.1254 (process vent 
provisions), and compliance with Sec. 63.1254 has been demonstrated in 
accordance with paragraph (d) of this section.
    (2) Design evaluation. If this option is chosen to demonstrate 
initial compliance with the percent reduction requirement of 
Sec. 63.1253(b) or (c), a design evaluation shall be prepared in 
accordance with the provisions in paragraph (a)(1) of this section. The 
design evaluation shall include documentation demonstrating that the 
control device being used achieves the required control efficiency 
during reasonably expected maximum filling rate.
    (3) Floating roof. If the owner or operator of an affected source 
chooses to comply with the provisions of Sec. 63.1253(b) or (c) by 
installing a floating roof, the owner or operator shall comply with the 
procedures described in Secs. 63.119(b), (c), (d), and 63.120(a), (b), 
and (c), with the differences noted in paragraphs (c)(3)(i) through (v) 
of this section for the purposes of this subpart.
    (i) When the term ``storage vessel'' is used in Secs. 63.119 and 
63.120, the definition of ``storage tank'' in Sec. 63.1251 shall apply 
for the purposes of this subpart.
    (ii) When December 31, 1992 is referred to in Sec. 63.119, April 2, 
1997 shall apply instead for the purposes of this subpart.
    (iii) When April 22, 1994 is referred to in Sec. 63.119, September 
21, 1998 shall apply instead for the purposes of this subpart.
    (iv) When the phrase ``the compliance date specified in Sec. 63.100 
of subpart F of this part'' is referred to in Sec. 63.120, the phrase 
``the compliance date specified in Sec. 63.1250'' shall apply for the 
purposes of this subpart.
    (v) When the phrase ``the maximum true vapor pressure of the total 
organic HAP's in the stored liquid falls below the values defining Group 
1 storage vessels specified in table 5 or table 6 of this subpart'' is 
referred to in Sec. 63.120(b)(1)(iv), the phrase ``the maximum true 
vapor pressure of the total organic HAP in the stored liquid falls below 
13.1 kPa (1.9 psia)'' shall apply for the purposes of this subpart.
    (4) Initial compliance with alternative standard. Initial compliance 
with Sec. 63.1253(d) is demonstrated by fulfilling the requirements of 
paragraph (a)(5) of this section.
    (5) Planned maintenance. The owner or operator shall demonstrate 
compliance with the requirements of Sec. 63.1253(e) by including the 
periods of planned routine maintenance specified by date and time in 
each Periodic Report required by Sec. 63.1260.
    (d) Initial compliance with process vent provisions. An owner or 
operator of an affected source complying with the process vent standards 
in Sec. 63.1254 shall demonstrate compliance using the procedures 
described in paragraphs (d)(1) through (4) of this section.
    (1) Except as provided in paragraph (a)(4) of this section, initial 
compliance with the process vent standards in Sec. 63.1254 shall be 
demonstrated using the procedures specified in paragraphs (d)(1)(i) 
through (iv), as applicable.
    (i) Initial compliance with Sec. 63.1254(a)(1)(i) is demonstrated 
when the actual emissions of HAP from the sum of all process vents 
within a process that do not meet the criteria specified in 
Sec. 63.1254(a)(3) is less than or equal to 2,000 lb/yr. Initial 
compliance with Sec. 63.1254(a)(1)(ii) is demonstrated when the 
uncontrolled emissions of HAP from the sum of all process vents within a 
process is less than or equal to 100 lb/yr. Uncontrolled HAP emissions 
and controlled HAP emissions shall be determined using the procedures 
described in paragraphs (d)(2) and (3) of this section.
    (ii) Initial compliance with the percent reduction requirements in 
Secs. 63.1254(a)(2), (a)(3), and (b) is demonstrated by:
    (A) Determining controlled HAP emissions using the procedures 
described in paragraph (d)(3) of this section and uncontrolled HAP 
emissions

[[Page 65]]

determined using the procedures described in paragraph (d)(2) of this 
section and demonstrating that the reductions required by 
Secs. 63.1254(a)(2), (a)(3), and (b) are met; or
    (B) Controlling the process vents using a device meeting the 
criteria specified in paragraph (a)(4) of this section.
    (iii) Initial compliance with the outlet concentration requirements 
in Sec. 63.1254(a)(2)(ii) and (3) is demonstrated when the outlet TOC 
concentration is 20 ppmv or less and the outlet hydrogen halide and 
halogen concentration is 20 ppmv or less. The owner or operator shall 
demonstrate compliance by fulfilling the requirements in paragraph 
(a)(6) of this section.
    (iv) Initial compliance with Sec. 63.1254(c) is demonstrated by 
fulfilling the requirements of paragraph (a)(5) of this section.
    (2) Uncontrolled emissions. An owner or operator of an affected 
source complying with the emission limitation required by 
Sec. 63.1254(a)(1), or emissions reductions specified in 
Sec. 63.1254(a)(2), (a)(3), or (b), for each process vent within a 
process, shall calculate uncontrolled emissions from all equipment in 
the process according to the procedures described in paragraph (d)(2)(i) 
or (ii) of this section, as appropriate.
    (i) Emission estimation procedures. Owners or operators shall 
determine uncontrolled emissions of HAP using measurements and/or 
calculations for each batch emission episode within each unit operation 
according to the engineering evaluation methodology in paragraphs 
(d)(2)(i)(A) through (H) of this section. Except where variations are 
noted, individual HAP partial pressures in multicomponent systems shall 
be determined by the following methods: If the components are miscible 
in one another, use Raoult's law to calculate the partial pressures; if 
the solution is a dilute aqueous mixture, use Henry's law to calculate 
partial pressures; if Raoult's law or Henry's law are not appropriate or 
available, use experimentally obtained activity coefficients or models 
such as the group-contribution models, to predict activity coefficients, 
or assume the components of the system behave independently and use the 
summation of all vapor pressures from the HAP as the total HAP partial 
pressure. Chemical property data can be obtained from standard reference 
texts.
    (A) Vapor displacement. Emissions from vapor displacement due to 
transfer of material shall be calculated using Equation 11 of this 
subpart. The individual HAP partial pressures may be calculated using 
Raoult's law.
[GRAPHIC] [TIFF OMITTED] TR21SE98.008

where:

E = mass of HAP emitted
V = volume of gas displaced from the vessel
R = ideal gas law constant
T = temperature of the vessel vapor space; absolute
Pi = partial pressure of the individual HAP
MWi = molecular weight of the individual HAP
n = number of HAP compounds in the emission stream i = identifier for a 
HAP compound

    (B) Purging. Emissions from purging shall be calculated using 
Equation 12 of this subpart. The partial pressures of individual 
condensable compounds may be calculated using Raoult's law, the pressure 
of the vessel vapor space may be set equal to 760 mmHg, and the partial 
pressure of HAP shall be assumed to be 25 percent of the saturated value 
if the purge flow rate is greater than 100 standard cubic feet per 
minute (scfm).
[GRAPHIC] [TIFF OMITTED] TR21SE98.009


[[Page 66]]


Where:
E = mass of HAP emitted
V = purge flow rate at the temperature and pressure of the vessel vapor 
space
R = ideal gas law constant
T = temperature of the vessel vapor space; absolute
Pi = partial pressure of the individual HAP
Pj = partial pressure of individual condensable VOC compounds 
(including HAP)
PT = pressure of the vessel vapor space
MWi = molecular weight of the individual HAP
t = time of purge
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound
j = identifier for a condensable compound
m = number of condensable compounds (including HAP) in the emission 
stream

    (C) Heating. Emissions caused by the heating of a vessel to a 
temperature equal to or lower than 10 K below the boiling point shall be 
calculated using the procedures in either paragraph (d)(2)(i)(C)(1) or 
(3) of this section. Emissions caused by heating a vessel to a 
temperature that is higher than 10 K below the boiling point and less 
than the boiling point, must be calculated using the procedures in 
either paragraph (d)(2)(i)(C) (2) or (3) of this section. If the 
contents of a vessel are heated to the boiling point, emissions must be 
calculated using the procedures in paragraph (d)(2)(i)(C)(4) of this 
section.
    (1) This paragraph describes procedures to calculate emissions if 
the final temperature to which the vessel contents are heated is 10 K 
below the boiling point of the HAP in the vessel, or lower. The owner or 
operator shall calculate the mass of HAP emitted per episode using 
either Equation 13 or 14 of this subpart. The moles of noncondensable 
gas displaced are calculated using Equation 15 of this subpart. The 
initial and final pressure of the noncondensable gas in the vessel shall 
be calculated using Equation 16 of this subpart. The average molecular 
weight of HAP in the displaced gas shall be calculated using Equation 17 
of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.010

[GRAPHIC] [TIFF OMITTED] TR21SE98.011

[GRAPHIC] [TIFF OMITTED] TR21SE98.012

[GRAPHIC] [TIFF OMITTED] TR21SE98.013


[[Page 67]]


[GRAPHIC] [TIFF OMITTED] TR21SE98.014

Where:

E = mass of HAP vapor displaced from the vessel being heated
xi = mole fraction of each HAP in the liquid phase
xj = mole fraction of each condensable VOC (including HAP) in 
the liquid phase
(Pi*) = vapor pressure of each HAP in the vessel headspace at 
any temperature between the initial and final heatup temperatures, mmHg
(Pj*) = vapor pressure of each condensable VOC (including 
HAP) in the vessel headspace at any temperature between the initial and 
final heatup temperatures, mmHg
760 = atmospheric pressure, mmHg
MWHAP = the average molecular weight of HAP present in the 
displaced gas
 = number of moles of noncondensable gas displaced
V = volume of free space in the vessel
R = ideal gas law constant
T1 = initial temperature of vessel contents, absolute
T2 = final temperature of vessel contents, absolute
Pan = partial pressure of noncondensable gas in the vessel 
headspace at initial (n=1) and final (n=2) temperature
Patm = atmospheric pressure (when  is used 
in Equation 13 of this subpart, Patm may be set equal to 760 
mmHg for any vessel)
(Pj)Tn = partial pressure of each condensable 
compound (including HAP) in the vessel headspace at the initial 
temperature (n=1) and final (n=2) temperature
m = number of condensable compounds (including HAP) in the displaced 
vapor
j = identifier for a condensable compound
(Pi)Tn = partial pressure of each HAP in the 
vessel headspace at initial (T1) and final (T2) 
temperature; [for use in Equation 13, replace 
(Pi)T1+(Pi)T2 with 
Pi at the temperature used to calculate vapor pressure of HAP 
in Equation 13]
MWi = molecular weight of each HAP
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound

    (2) If the vessel contents are heated to a temperature that is 
higher than 10 K below the boiling point and less than the boiling 
point, emissions must be calculated using the procedures in paragraph 
(d)(2)(i)(C)(2)(i), or (ii), or (iii) of this section.
    (i) Use Equation 13 of this subpart. In Equation 13 of this subpart, 
the HAP vapor pressures must be determined at the temperature 10 K below 
the boiling point. In the calculation of  for 
Equation 13 of this subpart, T2 must be the temperature 10 K 
below the boiling point, and Pa2 must be determined at the 
temperature 10 K below the boiling point. In the calculation of 
MWHAP, the HAP partial pressures must be determined at the 
temperature 10 K below the boiling point.
    (ii) Use Equation 14 of this subpart. In Equation 14 of this 
subpart, the HAP partial pressures must be deter mined at the 
temperature 10 K below the boiling point. In the calculation of 
 for Equation 14 of this subpart, T2 must 
be the temperature 10 K below the boiling point, and Pa2 must 
be determined at the temperature 10 K below the boiling point. In the 
calculation of MWHAP, the HAP partial pressures must be 
determined at the temperature 10 K below the boiling point.
    (iii) Use Equation 14 of this subpart over specific temperature 
increments. If the initial temperature is lower than 10 K below the 
boiling point, emissions must be calculated as the sum over two 
increments; one increment is from the initial temperature to 10 K below 
the boiling point, and the second is from 10 K below the boiling point 
to the lower of either the final temperature or the temperature 5 K 
below the boiling

[[Page 68]]

point. If the initial temperature is higher than 10 K below the boiling 
point, emissions are calculated over one increment from the initial 
temperature to the lower of either the final temperature or the 
temperature 5 K below the boiling point.
    (3)(i) Emissions caused by heating a vessel are calculated using 
Equation 18 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.015

Where:

E = mass of HAP vapor displaced from the vessel being heated
Navg = average gas space molar volume during the heating 
process
PT= total pressure in the vessel
Pi,1 = partial pressure of the individual HAP compounds at 
T1
Pi,2 = partial pressure of the individual HAP compounds at 
T2
MWHAP = average molecular weight of the HAP compounds
ni,1 = number of moles of condensable in the vessel headspace 
at T1
ni,2 = number of moles of condensable in the vessel headspace 
at T2
n = number of HAP compounds in the emission stream

    (ii) The average gas space molar volume during the heating process 
is calculated using Equation 19 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.016

Where:

Navg = average gas space molar volume during the heating 
process
V = volume of free space in vessel
PT = total pressure in the vessel
R = ideal gas law constant
T1 = initial temperature of the vessel
T2 = final temperature of the vessel

    (iii) The difference in the number of moles of condensable in the 
vessel headspace between the initial and final temperatures is 
calculated using Equation 20 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.017

Where:

V = volume of free space in vessel
R = ideal gas law constant
T1 = initial temperature in the vessel
T2 = final temperature in the vessel
Pi,1 = partial pressure of the individual HAP compounds at 
T1
Pi,2 = partial pressure of the individual HAP compounds at 
T2
n = number of HAP compounds in the emission stream

    (4) If the vessel contents are heated to the boiling point, 
emissions must be

[[Page 69]]

calculated using the procedure in paragraphs (d)(2)(i)(c)(4)(i) and (ii) 
of this section.
    (i) Use either of the procedures in paragraph (d)(3)(i)(B)(3) of 
this section to calculate the emissions from heating to the boiling 
point (note that Pa2=0 in the calculation of; and
    (ii) While boiling, the vessel must be operated with a properly 
operated process condenser. An initial demonstration that a process 
condenser is properly operated is required for vessels that operate 
process condensers without secondary condensers that are air pollution 
control devices. The owner or operator must either measure the condenser 
exhaust gas temperature and show it is less than the boiling point of 
the substance(s) in the vessel, or perform a material balance around the 
vessel and condenser to show that at least 99 percent of the material 
vaporized while boiling is condensed. Uncontrolled emissions are assumed 
to be zero under these conditions. The initial demonstration shall be 
conducted for all appropriate operating scenarios and documented in the 
Notification of Compliance report described in Sec. 63.1260(f).
    (D) Depressurization. Emissions from depressurization shall be 
calculated using the procedures in either paragraphs (d)(2)(i)(D)(1) 
through (4), paragraphs (d)(2)(i)(D)(5) through (9), or paragraph 
(d)(2)(i)(D)(10) of this section.
    (1) Equations 21 and 22 of this subpart are used to calculate the 
initial and final volumes of noncondensable gas present in the vessel, 
adjusted to atmospheric pressure. The HAP partial pressures may be 
calculated using Raoult's law.
[GRAPHIC] [TIFF OMITTED] TR21SE98.018

[GRAPHIC] [TIFF OMITTED] TR21SE98.019

Where:

Vnc1 = initial volume of noncondensable gas in the vessel
Vnc2 = final volume of noncondensable gas in the vessel
V = free volume in the vessel being depressurized
Pnc1 = initial partial pressure of the noncondensable gas, as 
calculated using Equation 23 of this subpart, mmHg
Pnc2 = final partial pressure of the noncondensable gas, as 
calculated using Equation 24 of this subpart, mmHg
760 = atmospheric pressure, mmHg

    (2) The initial and final partial pressures of the noncondensable 
gas in the vessel are determined using Equations 23 and 24 of this 
subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.020

[GRAPHIC] [TIFF OMITTED] TR21SE98.021

Where:
Pnc1 = initial partial pressure of the noncondensable gas
Pnc2 = final partial pressure of the noncondensable gas
P1 = initial vessel pressure
P2 = final vessel pressure
Pj* = vapor pressure of each condensable (including HAP) in 
the emission stream
xj = mole fraction of each condensable (including HAP) in the 
emission stream
m = number of condensable compounds (including HAP) in the emission 
stream
j = identifier for a condensable compound

(3) The average ratio of moles of noncondensable to moles of HAP is 
calculated using Equation 25 of this subpart:

[[Page 70]]

[GRAPHIC] [TIFF OMITTED] TR21SE98.022

Where:

nR = average ratio of moles of noncondensable to moles of HAP
Pnc1 = initial partial pressure of the noncondensable gas, as 
calculated using Equation 23 of this subpart
Pnc2 = final partial pressure of the noncondensable gas, as 
calculated using Equation 24 of this subpart
Pi* = vapor pressure of each individual HAP
xi = mole fraction of each individual HAP in the liquid phase
n = number of HAP compounds
i = identifier for a HAP compound

    (4) The mass of HAP emitted shall be calculated using Equation 26 of 
this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.023

Where:

E = mass of HAP emitted
Vnc1 = initial volume of noncondensable gas in the vessel, as 
calculated using Equation 21 of this subpart
Vnc2 = final volume of noncondensable gas in the vessel, as 
calculated using Equation 22 of this subpart nR = average 
ratio of moles of noncondensable to moles of HAP, as calculated using 
Equation 25 of this subpart
Patm = atmospheric pressure, standard
R = ideal gas law constant
T = temperature of the vessel, absolute
MWHAP = average molecular weight of the HAP, as calculated 
using Equation 17 of this subpart

    (5) The moles of HAP vapor initially in the vessel are calculated 
using the ideal gas law using Equation 27 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.024

Where:

YHAP = mole fraction of HAP (the sum of the individual HAP 
fractions, Yi)
V = free volume in the vessel being depressurized
P1 = initial vessel pressure
R = ideal gas law constant
T = vessel temperature, absolute

    (6) The initial and final moles of noncondensable gas present in the 
vessel are calculated using Equations 28 and 29 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.025

[GRAPHIC] [TIFF OMITTED] TR21SE98.026

Where:

n1 = initial number of moles of noncondensable gas in the 
vessel
n2 = final number of moles of noncondensable gas in the 
vessel
V = free volume in the vessel being depressurized
Pnc1 = initial partial pressure of the noncondensable gas, as 
calculated using Equation 23 of this subpart
Pnc2 = final partial pressure of the noncondensable gas, as 
calculated using Equation 24 of this subpart
R = ideal gas law constant

[[Page 71]]

T = temperature, absolute

    (7) The initial and final partial pressures of the noncondensable 
gas in the vessel are determined using Equations 23 and 24 of this 
subpart.
    (8) The moles of HAP emitted during the depressurization are 
calculated by taking an approximation of the average ratio of moles of 
HAP to moles of noncondensable and multiplying by the total moles of 
noncondensables released during the depressurization, using Equation 30 
of this subpart:
where:
[GRAPHIC] [TIFF OMITTED] TR21SE98.027

nHAP = moles of HAP emitted
n1 = initial number of moles of noncondensable gas in the 
vessel, as calculated using Equation 28 of this subpart
n2 = final number of moles of noncondensable gas in the 
vessel, as calculated using Equation 29 of this subpart

    (9) The mass of HAP emitted can be calculated using Equation 31 of 
this subpart:

E =NHAP * MWHAP    (Eq. 31)

where:
E = mass of HAP emitted
nHAP = moles of HAP emitted, as calculated using Equation 30 
of this subpart
MWHAP = average molecular weight of the HAP as calculated 
using Equation 17 of this subpart

    (10) Emissions from depressurization may be calculated using 
Equation 32 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.028

where:

V = free volume in vessel being depressurized
R = ideal gas law constant
T = temperature of the vessel, absolute
P1 = initial pressure in the vessel
P2 = final pressure in the vessel
Pi = partial pressure of the individual HAP compounds
    MWi = molecular weight of the individual HAP compounds
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound

    (E) Vacuum systems. Emissions from vacuum systems may be calculated 
using Equation 33 of this subpart if the air leakage rate is known or 
can be approximated.
[GRAPHIC] [TIFF OMITTED] TR21SE98.029


[[Page 72]]


where:

E = mass of HAP emitted
Psystem = absolute pressure of receiving vessel or ejector 
outlet conditions, if there is no receiver
Pi* = vapor pressure of the HAP at the receiver temperature 
or the ejector outlet conditions
La = total air leak rate in the system, mass/time
MWnc = molecular weight of noncondensable gas
t = time of vacuum operation
MWHAP = average molecular weight of HAP in the emission 
stream, as calculated using Equation 17 of this subpart, with HAP 
partial pressures calculated at the temperature of the receiver or 
ejector outlet, as appropriate

    (F) Gas evolution. Emissions from gas evolution shall be calculated 
using Equation 12 of this subpart with V calculated using Equation 34 of 
this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.030

Where:

V = volumetric flow rate of gas evolution
Wg = mass flow rate of gas evolution
R = ideal gas law constant
T = temperature at the exit, absolute
PT = vessel pressure
MWg = molecular weight of the evolved gas

    (G) Air drying. Emissions from air drying shall be calculated using 
Equation 35 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.031

Where:

E = mass of HAP emitted
B = mass of dry solids
PS1 = HAP in material entering dryer, weight percent
PS2 = HAP in material exiting dryer, weight percent

    (H) Empty vessel purging. Emissions from empty vessel purging shall 
be calculated using Equation (36) of this subpart (Note: The term -Ft/v 
can be assumed to be 1):
[GRAPHIC] [TIFF OMITTED] TR21SE98.032

Where:

V = volume of empty vessel
R = ideal gas law constant
T = temperature of the vessel vapor space; absolute
Pi = partial pressure of the individual HAP at the beginning 
of the purge
(MWi) = molecular weight of the individual HAP
F = flowrate of the purge gas
t = duration of the purge
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound


[[Page 73]]


    (ii) Engineering assessments. The owner or operator shall conduct an 
engineering assessment to calculate uncontrolled HAP emissions for each 
emission episode that is not due to vapor displacement, purging, 
heating, depressurization, vacuum operations, gas evolution, or air 
drying. For emission episodes caused by any of these types of 
activities, the owner or operator also may calculate uncontrolled HAP 
emissions based on an engineering assessment if the owner or operator 
can demonstrate to the Administrator that the methods in paragraph 
(d)(2)(i) of this section are not appropriate. One criterion the owner 
or operator could use to demonstrate that the methods in paragraph 
(d)(2)(i) of this section are not appropriate is if previous test data 
are available that show a greater than 20 percent discrepancy between 
the test value and the estimated value. An engineering assessment 
includes, but is not limited to, the following:
    (A) Previous test results, provided the tests are representative of 
current operating practices at the process unit.
    (B) Bench-scale or pilot-scale test data representative of the 
process under representative operating conditions.
    (C) Maximum flow rate, HAP emission rate, concentration, or other 
relevant parameter specified or implied within a permit limit applicable 
to the process vent.
    (D) Design analysis based on accepted chemical engineering 
principles, measurable process parameters, or physical or chemical laws 
or properties. Examples of analytical methods include, but are not 
limited to:
    (1) Use of material balances based on process stoichiometry to 
estimate maximum organic HAP concentrations.
    (2) Estimation of maximum flow rate based on physical equipment 
design such as pump or blower capacities.
    (3) Estimation of HAP concentrations based on saturation conditions.
    (E) All data, assumptions, and procedures used in the engineering 
assessment shall be documented in accordance with Sec. 63.1260(e). Data 
or other information supporting a finding that the emissions estimation 
equations are inappropriate shall be reported in the Precompliance 
report.
    (3) Controlled emissions. An owner or operator shall determine 
controlled emissions using the procedures in either paragraph (d)(3)(i) 
or (ii) of this section. For condensers, controlled emissions shall be 
calculated using the emission estimation equations described in 
paragraph (d)(3)(i)(B) of this section.
    (i) Small control devices. Except for condensers, controlled 
emissions for each process vent that is controlled using a small control 
device shall be determined by using the design evaluation described in 
paragraph (d)(3)(i)(A) of this section, or conducting a performance test 
in accordance with paragraph (d)(3)(ii) of this section. Whenever a 
small control device becomes a large control device, the owner or 
operator must comply with the provisions in paragraph (d)(3)(ii) of this 
section and submit the test report in the next Periodic report.
    (A) Design evaluation. The design evaluation shall include 
documentation demonstrating that the control device being used achieves 
the required control efficiency under worst-case conditions, as 
determined from the emission profile described in 
Sec. 63.1257(b)(8)(ii). The control efficiency determined from this 
design evaluation shall be applied to uncontrolled emissions to estimate 
controlled emissions. The documentation must be conducted in accordance 
with the provisions in paragraph (a)(1) of this section. The design 
evaluation shall also include the value(s) and basis for the 
parameter(s) monitored under Sec. 63.1258.
    (B) Emission estimation equations. An owner or operator using a 
condenser as a control device shall determine controlled emissions using 
exhaust gas temperature measurements and calculations for each batch 
emission episode within each unit operation according to the engineering 
methodology in paragraphs (d)(3)(i)(B)(1) through (8) of this section. 
Individual HAP partial pressures shall be calculated as specified in 
paragraph (d)(2)(i) of this section.
    (1) Emissions from vapor displacement shall be calculated using 
Equation 11 of this subpart with T set equal to the temperature of the 
receiver and

[[Page 74]]

the HAP partial pressures determined at the temperature of the receiver.
    (2) Emissions from purging shall be calculated using Equation 12 of 
this subpart with T set equal to the temperature of the receiver and the 
HAP partial pressures determined at the temperature of the receiver.
    (3) Emissions from heating shall be calculated using either Equation 
13 of this subpart or Equation 37 of this subpart. In Equation 13, the 
HAP vapor pressures shall be determined at the temperature of the 
receiver. In Equations 13 and 37 of this subpart,  is 
equal to the number of moles of noncondensable displaced from the 
vessel, as calculated using Equation 15 of this subpart. In Equations 13 
and 37 of this subpart, the HAP average molecular weight shall be 
calculated using Equation 17 with the HAP partial pressures determined 
at the temperature of the receiver.
[GRAPHIC] [TIFF OMITTED] TR21SE98.033

Where:

E = mass of HAP emitted
 = moles of noncondensable gas displaced
PT = pressure in the receiver
Pi = partial pressure of the individual HAP at the receiver 
temperature
Pj = partial pressure of the individual condensable 
(including HAP) at the receiver temperature
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound
MWHAP = the average molecular weight of HAP in vapor exiting 
the receiver, as calculated using Equation 17 of this subpart
m = number of condensable compounds (including HAP) in the emission 
stream
    (4)(i) Emissions from depressurization shall be calculated using 
Equation 38 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.034

Where:

E = mass of HAP vapor emitted
Vnc1 = initial volume of noncondensable in the vessel, 
corrected to the final pressure, as calculated using Equation 39 of this 
subpart
Vnc2 = final volume of noncondensable in the vessel, as 
calculated using Equation 40 of this subpart
Pi = partial pressure of each individual HAP at the receiver 
temperature
Pj = partial pressure of each condensable (including HAP) at 
the receiver temperature
PT = receiver pressure
T = temperature of the receiver
R = ideal gas law constant
MWHAP = the average molecular weight of HAP calculated using 
Equation 17 of this subpart with partial pressures determined at the 
receiver temperature
i = identifier for a HAP compound
n = number of HAP compounds in the emission stream
m = number of condensable compounds (including HAP) in the emission 
stream
j = identifier for a condensable compound


[[Page 75]]


    (ii) The initial and final volumes of noncondensable gas present in 
the vessel, adjusted to the pressure of the receiver, are calculated 
using Equations 39 and 40 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.035

[GRAPHIC] [TIFF OMITTED] TR21SE98.036

Where:

Vnc1 = initial volume of noncondensable gas in the vessel
Vnc2 = final volume of noncondensable gas in the vessel
V = free volume in the vessel being depressurized
Pnc1 = initial partial pressure of the noncondensable gas, as 
calculated using Equation 41 of this subpart
Pnc2 = final partial pressure of the noncondensable gas, as 
calculated using Equation 42 of this subpart
PT = pressure of the receiver

    (iii) Initial and final partial pressures of the noncondensable gas 
in the vessel are determined using Equations 41 and 42 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.037

[GRAPHIC] [TIFF OMITTED] TR21SE98.038

Where:

Pnc1 = initial partial pressure of the noncondensable gas in 
the vessel
Pnc2 = final partial pressure of the noncondensable gas in 
the vessel
P1 = initial vessel pressure
P2 = final vessel pressure
Pj = partial pressure of each condensable compound (including 
HAP) in the vessel
m = number of condensable compounds (including HAP) in the emission 
stream
j = identifier for a condensable compound

    (5) Emissions from vacuum systems shall be calculated using Equation 
33 of this subpart.
    (6) Emissions from gas evolution shall be calculated using Equation 
12 with V calculated using Equation 34 of this subpart, T set equal to 
the receiver temperature, and the HAP partial pressures determined at 
the receiver temperature. The term for time, t, in Equation 12 of this 
subpart is not needed for the purposes of this calculation.
    (7) Emissions from air drying shall be calculated using Equation 11 
of this subpart with V equal to the air flow rate and Pi 
determined at the receiver temperature.
    (8) Emissions from empty vessel purging shall be calculated using 
equation 43 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.039

Where:

V = volume of empty vessel
R = ideal gas law constant
T1 = temperature of the vessel vapor space at beginning of 
purge
T2 = temperature of the receiver, absolute
(Pi)T1 = partial pressure of the individual HAP at 
the beginning of the purge
(Pi)T2 = partial pressure of the individual HAP at 
the receiver temperature

[[Page 76]]

MWi = molecular weight of the individual HAP
F = flowrate of the purge gas
t = duration of the purge
n = number of HAP compounds in the emission stream
i = identifier for a HAP compound

    (ii) Large control devices. Except for condensers, controlled 
emissions for each process vent that is controlled using a large control 
device shall be determined by applying the control efficiency of the 
large control device to the estimated uncontrolled emissions. The 
control efficiency shall be determined by conducting a performance test 
on the control device as described in paragraphs (d)(3)(ii)(A) through 
(C) of this section, or by using the results of a previous performance 
test as described in paragraph (d)(4) of this section. If the control 
device is intended to control only hydrogen halides and halogens, the 
owner or operator may assume the control efficiency of organic HAP is 
zero percent. If the control device is intended to control only organic 
HAP, the owner or operator may assume the control efficiency for 
hydrogen halides and halogen is zero percent. Owners and operators are 
not required to conduct performance tests for devices described in 
paragraphs (a)(4) and (d)(4) of this section that are large control 
devices, as defined in Sec. 63.1251.
    (A) The performance test shall be conducted by performing emission 
testing on the inlet and outlet, or, if complying with the provisions of 
Sec. 63.1254(c), on the outlet of the control device, following the test 
methods and procedures of Sec. 63.1257(b). Concentrations shall be 
calculated from the data obtained through emission testing according to 
the procedures in paragraph (a)(2) of this section. If the control 
device is a combustion device that uses supplemental combustion air, the 
concentrations shall be corrected to 3 percent oxygen according to the 
procedures in paragraph (a)(3) of this section.
    (B) Performance testing shall be conducted under absolute, or 
hypothetical worst-case conditions, as defined in paragraphs 
(b)(8)(i)(A) through (B) of this section.
    (C) The owner or operator may elect to conduct more than one 
performance test on the control device for the purpose of establishing 
more than one operating condition at which the control device achieves 
the required control efficiency.
    (4) An owner or operator is not required to conduct a performance 
test for the following:
    (i) Any control device for which a previous performance test was 
conducted, provided the test was conducted using the same procedures 
specified in Sec. 63.1257(b) over conditions typical of the appropriate 
worst-case, as defined in Sec. 63.1257(b)(8)(i). The results of the 
previous performance test shall be used to demonstrate compliance.
    (e) Compliance with wastewater provisions. (1) Determining annual 
average concentration and annual load. To determine the annual average 
concentration and annual load of partially soluble and/or soluble HAP 
compounds in a wastewater stream, as required by Sec. 63.1256(a)(1), an 
owner or operator shall comply with the provisions in paragraphs 
(e)(1)(i) through (iii) of this section. A wastewater stream is exempt 
from the requirements of Sec. 63.1256(a)(2) if the owner or operator 
determines the annual average concentration and annual load are below 
all of the applicability cutoffs specified in Sec. 63.1256(a)(1)(i)(A) 
through (D). For annual average concentration, only initial rinses are 
included. Concentration measurements based on Method 305 shall be 
adjusted by dividing each concentration by the compound-specific Fm 
factor listed in Table 8 of this subpart. Concentration measurements 
based on methods other than Method 305 may not be adjusted by the 
compound-specific Fm factor listed in Table 8 of this subpart.
    (i) Annual average concentration definition. (A) When complying with 
Sec. 63.1256(a)(1)(i)(A), the annual average concentration means the 
total mass of partially soluble HAP compounds occurring in the 
wastewater stream during the calendar year divided by the total mass of 
the wastewater stream discharged during the same calendar year.
    (B) When complying with Sec. 63.1256(a)(1)(i) (B) or (C), the annual

[[Page 77]]

average concentration means the total mass of partially soluble and/or 
soluble HAP compounds occurring in the wastewater stream during the 
calendar year divided by the total mass of the wastewater stream 
discharged during the same calendar year.
    (C) When complying with Sec. 63.1256(a)(1)(i)(D), the annual average 
concentration means the total mass of soluble HAP compounds occurring in 
the wastewater stream during the calendar year divided by the total mass 
of the wastewater stream discharged during the same calendar year.
    (ii) Determination of annual average concentration. An owner or 
operator shall determine annual average concentrations of partially 
soluble and/or soluble HAP compounds in accordance with the provisions 
specified in paragraph (e)(1)(ii)(A), (B), or (C) of this section. The 
owner or operator may determine annual average concentrations by process 
simulation. Data and other information supporting the simulation shall 
be reported in the Precompliance Report for approval by the 
Administrator. The annual average concentration shall be determined 
either at the POD or downstream of the POD with adjustment for 
concentration changes made according to paragraph (e)(1)(ii)(D) of this 
section.
    (A) Test methods. The concentration of partially soluble HAP, 
soluble HAP, or total HAP shall be measured using any of the methods 
described in paragraphs (b)(10)(i) through (iv) of this section.
    (B) Knowledge of the wastewater stream. The concentration of 
partially soluble HAP, soluble HAP, or total HAP shall be calculated 
based on knowledge of the wastewater stream according to the procedures 
in paragraphs (e)(1)(ii)(B)(1) and (2) of this section. The owner or 
operator shall document concentrations in the Notification of Compliance 
Status report described in Sec. 63.1260(f).
    (1) Mass balance. The owner or operator shall calculate the 
concentrations of HAP compounds in wastewater considering the total 
quantity of HAP discharged to the water, the amount of water at the POD, 
and the amounts of water and solvent lost to other mechanisms such as 
reactions, air emissions, or uptake in product or other processing 
materials. The quantities of HAP and water shall be based on batch 
sheets, manufacturing tickets, or FDA bills of materials. In cases where 
a chemical reaction occurs that generates or consumes HAP, the amount of 
HAP remaining after a reaction shall be based on stoichometry assuming 
100 percent theoretical consumption or yield, as applicable.
    (2) Published water solubility data. For single components in water, 
owners and operators may use the water solubilities published in 
standard reference texts at the POD temperature to determine maximum HAP 
concentration.
    (C) Bench scale or pilot-scale test data. The concentration of 
partially soluble HAP, soluble HAP, or total HAP shall be calculated 
based on bench scale or pilot-scale test data. The owner or operator 
shall provide sufficient information to demonstrate that the bench-scale 
or pilot-scale test concentration data are representative of actual HAP 
concentrations. The owner or operator shall also provide documentation 
describing the testing protocol, and the means by which sample 
variability and analytical variability were accounted for in the 
determination of HAP concentrations. Documentation of the pilot-scale or 
bench scale analysis shall be provided in the precompliance report.
    (D) Adjustment for concentrations determined downstream of the POD. 
The owner or operator shall make corrections to the annual average 
concentration when the concentration is determined downstream of the POD 
at a location where: two or more wastewater streams have been mixed; one 
or more wastewater streams have been treated; or, losses to the 
atmosphere have occurred. The owner or operator shall make the 
adjustments either to the individual data points or to the final annual 
average concentration.
    (iii) Determination of annual load. An owner or operator shall 
calculate the partially soluble and/or soluble HAP load in a wastewater 
stream based on the annual average concentration determined in paragraph 
(e)(1)(ii) (A), (B), or (C) of this section and the total volume of the 
wastewater stream, based

[[Page 78]]

on knowledge of the wastewater stream in accordance with paragraphs 
(e)(1)(ii)(B) of this section. The owner or operator shall maintain 
records of the total liters of wastewater discharged per year as 
specified in Sec. 63.1259(b).
    (2) Compliance with treatment unit control provisions. (i) 
Performance tests and design evaluations-general. To comply with the 
control options in Sec. 63.1256(g) (10) or (13), neither a design 
evaluation nor a performance test is required. For any other 
nonbiological treatment process, the owner or operator shall conduct 
either a design evaluation as specified in paragraph (e)(2)(ii) of this 
section, or a performance test as specified in paragraph (e)(2)(iii) of 
this section to demonstrate that each nonbiological treatment process 
used to comply with Sec. 63.1256(g) (8), (9), and/or (12) achieves the 
conditions specified for compliance. The owner or operator shall 
demonstrate by the procedures in either paragraph (e)(2) (ii) or (iii) 
of this section that each closed biological treatment process used to 
comply with Sec. 63.1256 (g)(8)(ii), (g)(9)(ii), (g)(11), or (g)(12) 
achieves the conditions specified for compliance. If an open biological 
treatment unit is used to comply with Sec. 63.1256 (g)(8)(ii), 
(g)(9)(ii), (g)(11), or (g)(12), the owner or operator shall comply with 
the performance test requirements in paragraph (e)(2)(iii) of this 
section.
    (ii) Design evaluation. A design evaluation and supporting 
documentation that addresses the operating characteristics of the 
treatment process and that is based on operation at a wastewater stream 
flow rate and a concentration under which it would be most difficult to 
demonstrate compliance. For closed biological treatment processes, the 
percent reduction from removal/destruction in the treatment unit and 
control device shall be determined by a mass balance over the unit. The 
mass flow rate of soluble and/or partially soluble HAP compounds exiting 
the treatment process shall be the sum of the mass flow rate of soluble 
and/or partially soluble HAP compounds in the wastewater stream exiting 
the biological treatment process and the mass flow rate of the vented 
gas stream exiting the control device. The mass flow rate entering the 
treatment process minus the mass flow rate exiting the process 
determines the actual mass removal. Compounds that meet the requirements 
specified in paragraph (e)(2)(iii)(A)(4) of this section are not 
required to be included in the design evaluation; the term ``performance 
test'' in paragraph (e)(2)(iii)(A)(4) of this section shall mean 
``design evaluation'' for the purposes of this paragraph.
    (iii) Performance tests. Performance tests shall be conducted using 
test methods and procedures that meet the applicable requirements 
specified in paragraphs (e)(2)(iii)(A) through (G) of this section.
    (A) General. This paragraph specifies the general procedures for 
performance tests that are conducted to demonstrate compliance of a 
treatment process with the control requirements specified in 
Sec. 63.1256(g).
    (1) Representative process unit operating conditions. Compliance 
shall be demonstrated for representative operating conditions. 
Operations during periods of malfunction and periods of nonoperation 
shall not constitute representative conditions. The owner or operator 
shall record the process information that is necessary to document 
operating conditions during the test.
    (2) Representative treatment process operating conditions. 
Performance tests shall be conducted when the treatment process is 
operating at a representative inlet flow rate and concentration. If the 
treatment process will be operating at several different sets of 
representative operating conditions, the owner or operator shall comply 
with paragraphs (e)(2)(iii)(A)(2)(i) and (ii) of this section. The owner 
or operator shall record information that is necessary to document 
treatment process or control device operating conditions during the 
test.
    (i) Range of operating conditions. If the treatment process will be 
operated at several different sets of representative operating 
conditions, performance testing over the entire range is not required. 
In such cases, the performance test results shall be supplemented with 
modeling and/or engineering assessments to demonstrate performance over 
the operating range.

[[Page 79]]

    (ii) Consideration of residence time. If concentration and/or flow 
rate to the treatment process are not relatively constant (i.e., 
comparison of inlet and outlet data will not be representative of 
performance), the owner or operator shall consider residence time, when 
determining concentration and flow rate.
    (3) Testing equipment. All testing equipment shall be prepared and 
installed as specified in the applicable test methods, or as approved by 
the Administrator.
    (4) Compounds not required to be considered in performance tests. 
Compounds that meet the requirements specified in (e)(2)(iii)(A)(4)(i), 
(ii), or (iii) of this section are not required to be included in the 
performance test. Concentration measurements based on Method 305 shall 
be adjusted by dividing each concentration by the compound-specific Fm 
factor listed in Table 8 of this subpart. Concentration measurements 
based on methods other than Method 305 shall not be adjusted by the 
compound-specific Fm factor listed in Table 8 of this subpart.
    (i) Compounds not used or produced by the PMPU; or
    (ii) Compounds with concentrations at the POD that are below 1 ppmw; 
or
    (iii) Compounds with concentrations at the POD that are below the 
lower detection limit where the lower detection limit is greater than 1 
ppmw. The method shall be an analytical method for wastewater which has 
the compound of interest as a target analyte.
    (5) Treatment using a series of treatment processes. In all cases 
where the wastewater provisions in this subpart allow or require the use 
of a treatment process to comply with emissions limitations, the owner 
or operator may use multiple treatment processes. The owner or operator 
complying with the requirements of Sec. 63.1256(g)(7)(i), when 
wastewater is conveyed by hard-piping, shall comply with either 
paragraph (e)(2)(iii)(A)(5)(i) or (ii) of this section. The owner or 
operator complying with the requirements of Sec. 63.1256(g)(7)(ii) shall 
comply with the requirements of paragraph (e)(2)(iii)(A)(5)(ii) of this 
section.
    (i) The owner or operator shall conduct the performance test across 
each series of treatment processes. For each series of treatment 
processes, inlet concentration and flow rate shall be measured either 
where the wastewater enters the first treatment process in a series of 
treatment processes, or prior to the first treatment process as 
specified in paragraph (e)(2)(iii)(A)(6) of this section. For each 
series of treatment processes, outlet concentration and flow rate shall 
be measured where the wastewater exits the last treatment process in the 
series of treatment processes, except when the last treatment process is 
an open or a closed aerobic biological treatment process demonstrating 
compliance by using the procedures in paragraphs (e)(2)(iii)(E) or (F) 
of this section. When the last treatment process is either an open or a 
closed aerobic biological treatment process demonstrating compliance by 
using the procedures in paragraphs (e)(2)(iii)(E) or (F) of this 
section, inlet and outlet concentrations and flow rates shall be 
measured at the inlet and outlet to the series of treatment processes 
prior to the biological treatment process and at the inlet to the 
biological treatment process, except as provided in paragraph 
(e)(2)(iii)(A)(6)(ii) of this section. The mass flow rate destroyed in 
the biological treatment process for which compliance is demonstrated 
using paragraph (e)(2)(iii)(E) or (F) of this section shall be added to 
the mass flow rate removed or destroyed in the series of treatment units 
before the biological treatment unit. This sum shall be used to 
calculate the overall control efficiency.
    (ii) The owner or operator shall conduct the performance test across 
each treatment process in the series of treatment processes. The mass 
flow rate removed or destroyed by each treatment process shall be added 
together and the overall control efficiency calculated to determine 
whether compliance has been demonstrated using paragraphs 
(e)(2)(iii)(C), (D), (E), (F), or (G) of this section, as applicable. If 
a biological treatment process is one of the treatment processes in the 
series of treatment processes, the inlet to the biological treatment 
process shall be the point at which the wastewater enters the biological 
treatment process, or the inlet to the equalization tank if

[[Page 80]]

all the criteria of paragraph (e)(2)(iii)(A)(6)(ii) of this section are 
met.
    (6) The owner or operator determining the inlet for purposes of 
demonstrating compliance with paragraph (e)(2)(iii)(E), or (F)of this 
section may elect to comply with paragraph (e)(2)(iii)(A)(6)(i) or (ii) 
of this section.
    (i) When wastewater is conveyed exclusively by hard-piping from the 
point of determination to a treatment process that is either the only 
treatment process or the first in a series of treatment processes (i.e., 
no treatment processes or other waste management units are used upstream 
of this treatment process to store, handle, or convey the wastewater), 
the inlet to the treatment process shall be at any location from the 
point of determination to where the wastewater stream enters the 
treatment process. When samples are taken upstream of the treatment 
process and before wastewater streams have converged, the owner or 
operator shall ensure that the mass flow rate of all affected wastewater 
is accounted for when using Sec. 63.1256(g)(8)(ii), (g)(9)(ii) or 
(g)(12) of this subpart to comply and that the mass flow rate of all 
wastewater, not just affected wastewater, is accounted for when using 
Sec. 63.1256(g)(11) to comply, except as provided in paragraph 
(e)(2)(iii)(A)(4) of this section.
    (ii) The owner or operator may consider the inlet to the 
equalization tank as the inlet to the biological treatment process if 
the wastewater is conveyed by hard-piping from either the last previous 
treatment process or the point of determination to the equalization 
tank; or the wastewater is conveyed from the equalization tank 
exclusively by hard-piping to the biological treatment process and no 
treatment processes or other waste management units are used to store, 
handle, or convey the wastewater between the equalization tank and the 
biological treatment process; or the equalization tank is equipped with 
a fixed roof and a closed-vent system that routes emissions to a control 
device that meets the requirements of Sec. 63.1256(b)(1)(i) through (iv) 
and Sec. 63.1256(b)(2)(i). The outlet from the series of treatment 
processes prior to the biological treatment process is the point at 
which the wastewater exits the last treatment process in the series 
prior to the equalization tank, if the equalization tank and biological 
treatment process are part of a series of treatment processes. The owner 
or operator shall ensure that the mass flow rate of all affected 
wastewater is accounted for when using Sec. 63.1256(g)(9)(ii) or (12) to 
comply and that the mass flow rate of all wastewater, not just affected 
wastewater is accounted for when using Sec. 63.1256(g)(11) to comply, 
except as provided in paragraph (e)(2)(iii)(A)(4) of this section.
    (B) Noncombustion treatment process--concentration limits. This 
paragraph applies to performance tests that are conducted to demonstrate 
compliance of a noncombustion treatment process with the ppmw wastewater 
stream concentration limits at the outlet of the treatment process. This 
compliance option is specified in Sec. 63.1256(g)(8)(i) and (9)(i). 
Wastewater samples shall be collected using sampling procedures which 
minimize loss of organic compounds during sample collection and analysis 
and maintain sample integrity per paragraph (b)(10)(iii) of this 
section. Samples shall be collected and analyzed using the procedures 
specified in paragraphs (b)(10)(i), (ii), and (iii) of this section. 
Samples may be grab samples or composite samples. Samples shall be taken 
at approximately equally spaced time intervals over a 1-hour period. 
Each 1-hour period constitutes a run, and the performance test shall 
consist of a minimum of three runs. Concentration measurements based on 
methods other than Method 305 may be adjusted by multiplying each 
concentration by the compound-specific Fm factor listed in Table 8 of 
this subpart. (For affected wastewater streams that contains both 
partially soluble and soluble HAP compounds, compliance is demonstrated 
only if the sum of the concentrations of partially soluble HAP compounds 
is less than 50 ppmw, and the sum of the concentrations of soluble HAP 
compounds is less than 520 ppmw.)
    (C) Noncombustion, nonbiological treatment process: percent mass 
removal/destruction option. This paragraph applies to performance tests 
that are conducted to demonstrate compliance of a

[[Page 81]]

noncombustion, nonbiological treatment process with the percent mass 
removal limits specified in Sec. 63.1256(g)(8)(ii) and (9)(ii) for 
partially soluble and soluble HAP compounds, respectively. The owner or 
operator shall comply with the requirements specified in paragraphs 
(e)(2)(iii)(C)(1) through (5) of this section.
    (1) Concentration. The concentration of partially soluble and/or 
soluble HAP compounds entering and exiting the treatment process shall 
be determined as provided in this paragraph. Wastewater samples shall be 
collected using sampling procedures which minimize loss of organic 
compounds during sample collection and analysis and maintain sample 
integrity per paragraph (b)(10)(v) of this section. The method shall be 
an analytical method for wastewater which has the compound of interest 
as a target analyte. Samples may be grab samples or composite samples. 
Samples shall be taken at approximately equally spaced time intervals 
over a 1-hour period. Each 1-hour period constitutes a run, and the 
performance test shall consist of a minimum of three runs. Concentration 
measurements based on Method 305 shall be adjusted by dividing each 
concentration by the compound-specific Fm factor listed in Table 8 of 
this subpart. Concentration measurements based on methods other than 
Method 305 shall not be adjusted by the compound-specific Fm factor 
listed in Table 8 of this subpart.
    (2) Flow rate. The flow rate of the entering and exiting wastewater 
streams shall be determined using inlet and outlet flow meters, 
respectively. Where the outlet flow is not greater than the inlet flow, 
a single flow meter may be used, and may be used at either the inlet or 
outlet. Flow rate measurements shall be taken at the same time as the 
concentration measurements.
    (3) Calculation of mass flow rate--for noncombustion, nonbiological 
treatment processes. The mass flow rates of partially soluble and/or 
soluble HAP compounds entering and exiting the treatment process are 
calculated using Equations 44 and 45 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR21SE98.040

[GRAPHIC] [TIFF OMITTED] TR21SE98.041

Where:

QMWa, QMWb = mass flow rate of partially soluble 
or soluble HAP compounds, average of all runs, in wastewater entering 
(QMWa) or exiting (QMWb) the treatment process, 
kg/hr
 = density of the wastewater, kg/m3
Qa,k, Qbb,k = volumetric flow rate of wastewater 
entering (Qa,k) or exiting (Qb,k) the treatment 
process during each run k, m3/hr
CT,a,k, CT,b,k = total concentration of partially 
soluble or soluble HAP compounds in wastewater entering 
(CT,a,k) or exiting (CT,b,k) the treatment process 
during each run k, ppmw
p = number of runs
k = identifier for a run
106 = conversion factor, mg/kg

    (4) Percent removal calculation for mass flow rate. The percent mass 
removal across the treatment process shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR21SE98.042

Where:

E = removal or destruction efficiency of the treatment process, percent
QMWa, QMWb = mass flow rate of partially soluble 
or soluble HAP compounds in wastewater entering (QMWa) and 
exiting (QMWb) the

[[Page 82]]

treatment process, kg/hr (as calculated using Equations 44 and 45 of 
this subpart)

    (5) Compare mass removal efficiency to required efficiency. Compare 
the mass removal efficiency (calculated in Equation 44 of this subpart) 
to the required efficiency as specified in Sec. 63.1256(g)(8)(ii) or 
(9)(ii). If complying with Sec. 63.1256(g)(8)(ii), compliance is 
demonstrated if the mass removal efficiency is 99 percent or greater. If 
complying with Sec. 63.1256(g)(9)(ii), compliance is demonstrated if the 
mass removal efficiency is 90 percent or greater.
    (D) Combustion treatment processes: percent mass removal/destruction 
option. This paragraph applies to performance tests that are conducted 
to demonstrate compliance of a combustion treatment process with the 
percent mass destruction limits specified in Sec. 63.1256(g)(8)(ii) for 
partially soluble HAP compounds, and/or Sec. 63.1256(g)(9)(ii) for 
soluble HAP compounds. The owner or operator shall comply with the 
requirements specified in paragraphs (e)(2)(iii)(D)(1) through (8) of 
this section.
    (1) Concentration in wastewater stream entering the combustion 
treatment process. The concentration of partially soluble and/or soluble 
HAP compounds entering the treatment process shall be determined as 
provided in this paragraph. Wastewater samples shall be collected using 
sampling procedures which minimize loss of organic compounds during 
sample collection and analysis and maintain sample integrity per 
paragraph (b)(10)(v) of this section. The method shall be an analytical 
method for wastewater which has the compound of interest as a target 
analyte. Samples may be grab samples or composite samples. Samples shall 
be taken at approximately equally spaced time intervals over a 1-hour 
period. Each 1-hour period constitutes a run, and the performance test 
shall consist of a minimum of three runs. Concentration measurements 
based on Method 305 of appendix A of this part shall be adjusted by 
dividing each concentration by the compound-specific Fm factor listed in 
Table 8 of this subpart. Concentration measurements based on methods 
other than Method 305 shall not be adjusted by the compound-specific Fm 
factor listed in Table 8 of this subpart.
    (2) Flow rate of wastewater entering the combustion treatment 
process. The flow rate of the wastewater stream entering the combustion 
treatment process shall be determined using an inlet flow meter. Flow 
rate measurements shall be taken at the same time as the concentration 
measurements.
    (3) Calculation of mass flow rate in wastewater stream entering 
combustion treatment processes. The mass flow rate of partially soluble 
and/or soluble HAP compounds entering the treatment process is 
calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR21SE98.043

Where:

QMWa = mass flow rate of partially soluble or soluble HAP 
compounds entering the combustion unit, kg/hr
= density of the wastewater stream, kg/m3
Qa,k = volumetric flow rate of wastewater entering the 
combustion unit during run k, m3/hr
CT,a,k = total concentration of partially soluble or soluble 
HAP compounds in the wastewater stream entering the combustion unit 
during run k, ppmw
 = number of runs
k = identifier for a run

    (4) Concentration in vented gas stream exiting the combustion 
treatment process. The concentration of partially soluble and/or soluble 
HAP compounds (or TOC) exiting the combustion treatment process in any 
vented gas stream shall be determined as provided in this

[[Page 83]]

paragraph. Samples may be grab samples or composite samples. Samples 
shall be taken at approximately equally spaced time intervals over a 1-
hour period. Each 1-hour period constitutes a run, and the performance 
test shall consist of a minimum of three runs. Concentration 
measurements shall be determined using Method 18 of 40 CFR part 60, 
appendix A. Alternatively, any other test method validated according to 
the procedures in Method 301 of appendix A of this part may be used.
    (5) Volumetric flow rate of vented gas stream exiting the combustion 
treatment process. The volumetric flow rate of the vented gas stream 
exiting the combustion treatment process shall be determined using 
Method 2, 2A, 2C, or 2D of 40 CFR part 60, appendix A, as appropriate. 
Volumetric flow rate measurements shall be taken at the same time as the 
concentration measurements.
    (6) Calculation of mass flow rate of vented gas stream exiting 
combustion treatment processes. The mass flow rate of partially soluble 
and/or soluble HAP compounds in a vented gas stream exiting the 
combustion treatment process shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR21SE98.044

where:

QMGb = mass rate of TOC (minus methane and ethane) or total 
partially soluble and/or soluble HAP, in vented gas stream, exiting 
(QMGb) the combustion device, dry basis, kg/hr
CGb,i = concentration of TOC (minus methane and ethane) or 
total partially soluble and/or soluble HAP, in vented gas stream, 
exiting (CGb,i) the combustion device, dry basis, ppmv
MWi = molecular weight of a component, kilogram/kilogram-mole
QGb = flow rate of gas stream exiting (QGb) the 
combustion device, dry standard cubic meters per hour
K2 = constant, 41.57 x 10-9 (parts per 
million)-1 (gram-mole per standard cubic meter) (kilogram/
gram), where standard temperature (gram-mole per standard cubic meter) 
is 20 deg.C
i = identifier for a compound
n = number of components in the sample

    (7) Destruction efficiency calculation. The destruction efficiency 
of the combustion unit for partially soluble and/or soluble HAP 
compounds shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR21SE98.045

Where:

E = destruction efficiency of partially soluble or soluble HAP compounds 
for the combustion unit, percent
QMW2a = mass flow rate of partially soluble or soluble HAP 
compounds entering the combustion unit, kg/hr
QMGb = mass flow rate of TOC (minus methane and ethane) or 
partially soluble and/or soluble HAP compounds in vented gas stream 
exiting the combustion treatment process, kg/hr
    (8) Compare mass destruction efficiency to required efficiency. 
Compare the mass destruction efficiency (calculated in Equation 49 of 
this subpart) to the required efficiency as specified in 
Sec. 63.1256(g)(8)(ii) or (g)(9)(ii). If complying with 
Sec. 63.1256(g)(8)(ii), compliance is demonstrated if the mass 
destruction efficiency is 99 percent or greater. If complying with 
Sec. 63.1256(g)(9)(ii), compliance is demonstrated if the mass 
destruction efficiency is 90 percent or greater.
    (E) Open or closed aerobic biological treatment processes: 95-
percent mass destruction option. This paragraph applies

[[Page 84]]

to performance tests that are conducted for open or closed aerobic 
biological treatment processes to demonstrate compliance with the 95-
percent mass destruction provisions in Sec. 63.1256(g)(11) for partially 
soluble and/or soluble HAP compounds.
    (1) Concentration in wastewater stream. The concentration of 
partially soluble and/or soluble HAP as provided in this paragraph. 
Concentration measurements to determine E shall be taken as provided in 
paragraph (e)(2)(iii)(A)(5) of this section for a series of treatment 
processes. Wastewater samples shall be collected using sampling 
procedures which minimize loss of organic compounds during sample 
collection and analysis and maintain sample integrity per paragraph 
(b)(10)(v) of this section. The method shall be an analytical method for 
wastewater which has the compound of interest as a target analyte. 
Samples may be grab samples or composite samples. Samples shall be taken 
at approximately equally spaced time intervals over a 1-hour period. 
Each 1-hour period constitutes a run, and the performance test shall 
consist of a minimum of three runs. Concentration measurements based on 
Method 305 shall be adjusted by dividing each concentration by the 
compound-specific Fm factor listed in Table 8 of this subpart. 
Concentration measurements based on methods other than Method 305 shall 
not be adjusted by the compound-specific Fm factor listed in Table 8 of 
this subpart.
    (2) Flow rate. Flow rate measurements to determine E shall be taken 
as provided in paragraph (e)(2)(iii)(A)(5) of this section for a series 
of treatment processes. Flow rate shall be determined using inlet and 
outlet flow measurement devices. Where the outlet flow is not greater 
than the inlet flow, a single flow measurement device may be used, and 
may be used at either the inlet or outlet. Flow rate measurements shall 
be taken at the same time as the concentration measurements.
    (3) Destruction efficiency. The owner or operator shall comply with 
the provisions in either paragraph (e)(2)(iii)(E)(3)(i), (ii) or (iii) 
of this section. Compliance is demonstrated if the destruction 
efficiency, E, is equal to or greater than 95 percent.
    (i) If the performance test is performed across the open or closed 
biological treatment system only, compliance is demonstrated if E is 
equal to Fbio, where E is the destruction efficiency of 
partially soluble and/or soluble HAP compounds and Fbio is 
the site-specific fraction of partially soluble and/or soluble HAP 
compounds biodegraded. Fbio shall be determined as specified 
in paragraph (e)(2)(iii)(E)(4) of this section and appendix C of subpart 
G of this part.
    (ii) If compliance is being demonstrated in accordance with 
paragraphs (e)(2)(iii)(A)(5)(i) or (ii) of this section, the removal 
efficiency shall be calculated using Equation 49 of this subpart. When 
complying with paragraph (e)(2)(iii)(A)(5)(i) of this section, the 
series of nonbiological treatment processes comprise one treatment 
process segment. When complying with paragraph (e)(2)(iii)(A)(5)(ii) of 
this section, each nonbiological treatment process is a treatment 
process segment.
[GRAPHIC] [TIFF OMITTED] TR21SE98.046

Where:

QMWa,i = the soluble and/or partially soluble HAP load 
entering a treatment process segment
QMWb,i = the soluble and/or partially soluble HAP load 
exiting a treatment process segment
n = the number of treatment process segments
i = identifier for a treatment process element
QMWbio = the inlet load of soluble and/or partially soluble 
HAP to the biological treatment process. The inlet is defined in 
accordance with

[[Page 85]]

paragraph (e)(2)(iii)(A)(6) of this section. If complying with paragraph 
(e)(2)(iii)(A)(6)(ii) of this section, QMWbio is equal to 
QMWb,n
Fbio = site-specific fraction of soluble and/or partially 
soluble HAP compounds biodegraded. Fbio shall be determined 
as specified in paragraph (e)(2)(iii)(E)(4) of this section and Appendix 
C of subpart G of this part.
QMWall = the total soluble and/or partially soluble HAP load 
to be treated.

    (4) Site-specific fraction biodegraded (Fbio). The 
procedures used to determine the compound-specific kinetic parameters 
for use in calculating Fbio differ for the compounds listed 
in Tables 2 and 3 of this subpart. An owner or operator shall calculate 
Fbio as specified in either paragraph (e)(2)(iii)(E)(4)(i) or 
(ii) of this section.
    (i) For biological treatment processes that do not meet the 
definition for enhanced biological treatment in Sec. 63.1251, the owner 
or operator shall determine the Fbio for the compounds in 
Tables 2 and 3 of this subpart using any of the procedures in appendix C 
to part 63, except procedure 3 (inlet and outlet concentration 
measurements). (The symbol ``Fbio'' represents the site-
specific fraction of an individual partially soluble or soluble HAP 
compound that is biodegraded.)
    (ii) If the biological treatment process meets the definition of 
``enhanced biological treatment process'' in Sec. 63.1251, the owner or 
operator shall determine Fbio for the compounds in Table 2 of 
this subpart using any of the procedures specified in appendix C to part 
63. The owner or operator shall calculate Fbio for the 
compounds in Table 3 of this subpart using the defaults for first order 
biodegradation rate constants (K1) in Table 9 of this subpart 
and follow the procedure explained in Form III of appendix C, 40 CFR 
part 63, or any of the procedures specified in appendix C of 40 CFR part 
63.
    (F) Open or closed aerobic biological treatment processes: percent 
removal for partially soluble or soluble HAP compounds. This paragraph 
applies to the use of performance tests that are conducted for open or 
closed aerobic biological treatment processes to demonstrate compliance 
with the percent removal provisions for either partially soluble HAP 
compounds in Sec. 63.1256(g)(8)(ii) or soluble HAP compounds in 
Sec. 63.1256(g)(9)(ii) or (g)(12). The owner or operator shall comply 
with the provisions in paragraph (e)(2)(iii)(E) of this section, except 
that compliance with Sec. 63.1256(g)(8)(ii) shall be demonstrated when E 
is equal to or greater than 99 percent, compliance with 
Sec. 63.1256(g)(9)(ii) shall be demonstrated when E is equal to or 
greater than 90 percent, and compliance with Sec. 63.1256(g)(12) shall 
be demonstrated when E is equal to or greater than 99 percent.
    (G) Closed biological treatment processes: percent mass removal 
option. This paragraph applies to the use of performance tests that are 
conducted for closed biological treatment processes to demonstrate 
compliance with the percent removal provisions in 
Secs. 63.1256(g)(8)(ii), (g)(9)(ii), (g)(11), or (g)(12). The owner or 
operator shall comply with the requirements specified in paragraphs 
(e)(2)(iii)(G) (1) through (4) of this section.
    (1) Comply with the procedures specified in paragraphs 
(e)(2)(iii)(C) (1) through (3) of this section to determine 
characteristics of the wastewater entering the biological treatment 
unit, except that the term ``partially soluble and/or soluble HAP'' 
shall mean ``soluble HAP'' for the purposes of this section if the owner 
or operator is complying with Sec. 63.1256(g)(9)(ii) or (g)(12), and it 
shall mean ``partially soluble HAP'' if the owner or operator is 
complying with Sec. 63.1256(g)(8)(ii).
    (2) Comply with the procedures specified in paragraphs 
(e)(2)(iii)(D) (4) through (6) of this section to determine the 
characteristics of gas vent streams exiting a control device, with the 
differences noted in paragraphs (e)(2)(iii)(G)(3) (i) and (ii) of this 
section.
    (i) The term ``partially soluble and/or soluble HAP'' shall mean 
``soluble HAP'' for the purposes of this section if the owner or 
operator is complying with Sec. 63.1256(g)(9)(ii) or (g)(12), and it 
shall mean ``partially soluble HAP'' if the owner or operator is 
complying with Sec. 63.1256(g)(8)(ii).

[[Page 86]]

    (ii) The term ``combustion treatment process'' shall mean ``control 
device'' for the purposes of this section.
    (3) Percent removal/destruction calculation. The percent removal and 
destruction across the treatment unit and any control device(s) shall be 
calculated using Equation 51 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.047

Where:

E = removal and destruction efficiency of the treatment unit and control 
device(s), percent
QMWa, QMWb = mass flow rate of partially soluble 
or soluble HAP compounds in wastewater entering (QMWa) and 
exiting (QMWb) the treatment process, kilograms per hour (as 
calculated using Equations WW1 and WW2)
QMGb = mass flow rate of partially soluble or soluble HAP 
compounds in vented gas stream exiting the combustion treatment process, 
kg/hr

    (4) Compare mass removal/destruction efficiency to required 
efficiency. Compare the mass removal/destruction efficiency (calculated 
using Equation 51 of this subpart) to the required efficiency as 
specified in Sec. 63.1256(g)(8)(ii), (g)(9)(ii), (g)(11), or (g)(12). If 
complying with Sec. 63.1256(g)(8)(ii), compliance is demonstrated if the 
mass removal/destruction is 99 percent or greater. If complying with 
Sec. 63.1256(g)(9)(ii), compliance is demonstrated if the mass removal/
destruction efficiency is 90 percent or greater. If complying with 
Sec. 63.1256(g)(11), compliance is demonstrated if the mass removal/
destruction efficiency is 95 percent or greater. If complying with 
Sec. 63.1256(g)(12), compliance is demonstrated if the mass removal/
destruction efficiency is 99 percent or greater.
    (3) Compliance with control device provisions. Except as provided in 
paragraph (e)(3)(iv) of this section, an owner or operator shall 
demonstrate that each control device or combination of control devices 
achieves the appropriate conditions specified in Sec. 63.1256(h)(2) by 
using one or more of the methods specified in paragraphs (e)(3)(i), 
(ii), or (iii) of this section.
    (i) Performance test for control devices other than flares. This 
paragraph applies to performance tests that are conducted to demonstrate 
compliance of a control device with the efficiency limits specified in 
Sec. 63.1256(h)(2). If complying with the 95-percent reduction 
efficiency requirement, comply with the requirements specified in 
paragraphs (e)(3)(i) (A) through (J) of this section. If complying with 
the 20 ppm by volume requirement, comply with the requirements specified 
in paragraphs (e)(3)(i) (A) through (G) and (e)(3)(i)(J) of this 
section.
    (A) General. The owner or operator shall comply with the general 
performance test provisions in paragraphs (e)(2)(iii)(A) (1) through (4) 
of this section, except that the term ``treatment unit'' shall mean 
``control device'' for the purposes of this section.
    (B) Sampling sites. Sampling sites shall be selected using Method 1 
or 1A of 40 CFR part 60, appendix A, as appropriate. For determination 
of compliance with the 95 percent reduction requirement, sampling sites 
shall be located at the inlet and the outlet of the control device. For 
determination of compliance with the 20 ppmv limit, the sampling site 
shall be located at the outlet of the control device.
    (C) Concentration in gas stream entering or exiting the control 
device. The concentration of total organic HAP or TOC in a gas stream 
shall be determined as provided in this paragraph. Samples may be grab 
samples or composite samples (i.e., integrated samples). Samples shall 
be taken at approximately equally spaced time intervals over a 1-hour 
period. Each 1-hour

[[Page 87]]

period constitutes a run, and the performance test shall consist of a 
minimum of three runs. Concentration measurements shall be determined 
using Method 18 of 40 CFR part 60, appendix A. Alternatively, any other 
test method validated according to the procedures in Method 301 of 
appendix A of this part may be used.
    (D) Volumetric flow rate of gas stream entering or exiting the 
control device. The volumetric flow rate of the gas stream shall be 
determined using Method 2, 2A, 2C, or 2D of 40 CFR part 60, appendix A, 
as appropriate. Volumetric flow rate measurements shall be taken at the 
same time as the concentration measurements.
    (E) Calculation of TOC concentration. The owner or operator shall 
compute TOC in accordance with the procedures in paragraph (a)(2) of 
this section.
    (F) Calculation of total organic HAP concentration. The owner or 
operator determining compliance based on total organic HAP concentration 
shall compute the total organic HAP concentration in accordance with the 
provisions in paragraph (a)(2) of this section.
    (G) Requirements for combustion control devices. If the control 
device is a combustion device, the owner or operator shall correct TOC 
and organic HAP concentrations to 3 percent oxygen in accordance with 
the provisions in paragraph (a)(3) of this section, and demonstrate 
initial compliance with the requirements for halogenated streams in 
accordance with paragraph (a)(6) of this section.
    (H) Mass rate calculation. The mass rate of either TOC (minus 
methane and ethane) or total organic HAP for each sample run shall be 
calculated using the following equations. Where the mass rate of TOC is 
being calculated, all organic compounds (minus methane and ethane) 
measured by methods specified in paragraph (e)(3)(i)(C) of this section 
are summed using Equations 52 and 53 of this subpart. Where the mass 
rate of total organic HAP is being calculated, only soluble and 
partially soluble HAP compounds shall be summed using Equations 52 and 
53.
[GRAPHIC] [TIFF OMITTED] TR21SE98.048

[GRAPHIC] [TIFF OMITTED] TR21SE98.049

Where:

CGa,i, CGb,i = concentration of TOC or total 
organic HAP, in vented gas stream, entering (CGa,i) and 
exiting (CGb,i) the control device, dry basis, ppmv
QMGa, QMGb = mass rate of TOC or total organic 
HAP, in vented gas stream, entering (QMGa) and exiting 
(QMGb) the control device, dry basis, kg/hr
Mwi = molecular weight of a component, kilogram/kilogram-mole
QGa,QGb = flow rate of gas stream entering 
(QGa) and exiting (QGb) the control device, dry 
standard cubic meters per hour
K2 = constant, 41.57  x 10-9 (parts per 
million)-1 (gram-mole per standard cubic meter) (kilogram/
gram), where standard temperature (gram-mole per standard cubic meter) 
is 20 deg.C
i = identifier for a compound
n = number of components in the sample

    (I) Percent reduction calculation. The percent reduction in TOC or 
total organic HAP for each sample run shall be calculated using Equation 
54 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.050


[[Page 88]]


where:

E = destruction efficiency of control device, percent
QMGa,QMGb = mass rate of TOC or total organic HAP, 
in vented gas stream entering and exiting (QMGb) the control 
device, dry basis, kilograms per hour

    (J) Compare mass destruction efficiency to required efficiency. If 
complying with the 95-percent reduction efficiency requirement, 
compliance is demonstrated if the mass destruction efficiency 
(calculated in Equation 51 of this subpart) is 95 percent or greater. If 
complying with the 20 ppmv limit, compliance is demonstrated if the 
outlet TOC concentration is 20 ppmv, or less.
    (ii) Design evaluation. A design evaluation conducted in accordance 
with the provisions in paragraph (a)(1) of this section. Compounds that 
meet the requirements specified in paragraph (e)(2)(iii)(A)(4) of this 
section are not required to be included in the design evaluation.
    (iii) Compliance demonstration for flares. When a flare is used to 
comply with Sec. 63.1256(h), the owner or operator shall comply with the 
flare provisions in Sec. 63.11(b). An owner or operator is not required 
to conduct a performance test to determine percent emission reduction or 
outlet organic HAP or TOC concentration when a flare is used.
    (iv) Exemptions from compliance demonstrations. An owner or operator 
using any control device specified in paragraph (a)(4) of this section 
is exempt from the requirements in paragraphs (e)(3)(i) through 
(e)(3)(iii) of this section and from the requirements in Sec. 63.6(f).
    (f) Pollution prevention alternative standard. The owner or operator 
shall demonstrate compliance with Sec. 63.1252(e)(2) using the 
procedures described in paragraph (f)(1) and (f)(3) of this section. The 
owner or operator shall demonstrate compliance with Sec. 63.1252(e)(3) 
using the procedures described in paragraphs (f)(2) and (f)(3) of this 
section.
    (1) Compliance is demonstrated when the annual kg/kg factor, 
calculated according to the procedure in paragraphs (f)(1)(i) and (iii) 
of this section, is reduced by at least 75 percent as calculated 
according to the procedure in paragraph (f)(1)(i) and (ii) of this 
section.
    (i) The production-indexed HAP consumption factors shall be 
calculated by dividing annual consumption of total HAP by the annual 
production rate, per process. The production-indexed total VOC 
consumption factor shall be calculated by dividing annual consumption of 
total VOC by the annual production rate, per process.
    (ii) The baseline factor is calculated from yearly production and 
consumption data for the first 3-year period in which the PMPU was 
operational, beginning no earlier than the 1987 calendar year, or for a 
minimum period of 12 months from startup of the process until the 
present in which the PMPU was operational and data are available, 
beginning no earlier than the 1987 calendar year.
    (iii) The annual factor is calculated on the following bases:
    (A) For continuous processes, the annual factor shall be calculated 
every 30 days for the 12-month period preceding the 30th day (30-day 
rolling average).
    (B) For batch processes, the annual factor shall be calculated every 
10 batches for the 12-month period preceding the 10th batch (10-batch 
rolling average). The annual factor shall be calculated every 5 batches 
if the number of batches is less than 10 for the 12-month period 
preceding the 10th batch and shall be calculated every year if the 
number of batches is less than 5 for the 12-month period preceding the 
5th batch.
    (2) Compliance is demonstrated when the requirements of paragraphs 
(f)(2)(i) through (iv) of this section are met.
    (i) The annual kg/kg factor, calculated according to the procedure 
in paragraphs (f)(1)(i) and (f)(1)(iii) of this section, is reduced to a 
value equal to or less than 50 percent of the baseline factor calculated 
according to the procedure in paragraphs (f)(1)(i) and (ii) of this 
section.
    (ii) The yearly reductions associated with add-on controls that meet 
the criteria of Secs. 63.1252(h)(3)(ii)(A) through (D) must be equal to 
or greater than the amounts calculated in paragraphs (f)(2)(ii)(A) and 
(B) of this section:
    (A) The mass of HAP calculated using Equation 55 of this subpart:


[[Page 89]]


[kg reduced]a = [kg/kg]b(0.75-PR)[kg 
produced]a    (Eq. 55)

Where:
[kg/kg]b = the baseline production-indexed HAP consumption 
factor, in kg/kg
[kg produced]a = the annual HAP production rate, in kg/yr
[kg reduced]a = the annual reduction required by add-on 
controls, in kg/yr
PR = the fractional reduction in the annual kg/kg factor 
achieved using pollution prevention where PR is 
0.5

    (B) The mass of VOC calculated using Equation 56 of this subpart:

VOC reduced = (VFbase - VFP - 
VFannual)  x  Mprod    (Eq. 56)

Where:

VOCreduced = required VOC emission reduction from add-on 
controls, kg/yr
VFbase = baseline VOC factor, kg VOC emitted/kg production
VFp = reduction in VOC factor achieved by pollution 
prevention, kg VOC emitted/kg production
VFannual = target annual VOC factor, kg VOC emitted/kg 
production
Mprod = production rate, kg/yr

    (iii) Demonstration that the criteria in Sec. 63.1252(e)(3)(ii)(A) 
through (D) are met shall be accomplished through a description of the 
control device and of the material streams entering and exiting the 
control device.
    (iv) The annual reduction achieved by the add-on control shall be 
quantified using the methods described in Sec. 63.1257(d).
    (3) Each owner or operator of a PMPU complying with the P2 standard 
shall prepare a P2 demonstration summary that shall contain, at a 
minimum, the following information:
    (i) Descriptions of the methodologies and forms used to measure and 
record daily consumption of HAP compounds reduced as part of the P2 
standard.
    (ii) Descriptions of the methodologies and forms used to measure and 
record daily production of products which are included in the P2 
standard.
    (iii) Supporting documentation for the descriptions provided in 
paragraphs (f)(3)(i) and (ii) including, but not limited to, operator 
log sheets and copies of daily, monthly, and annual inventories of 
materials and products.
    (g) Compliance with storage tank provisions by using emissions 
averaging. An owner or operator with two or more affected storage tanks 
may demonstrate compliance with Sec. 63.1253, as applicable, by 
fulfilling the requirements of paragraphs (g)(1) through (4) of this 
section.
    (1) The owner or operator shall develop and submit for approval an 
Implementation Plan containing all the information required in 
Sec. 63.1259(e) 6 months prior to the compliance date of the standard. 
The Administrator shall have 90 days to approve or disapprove the 
emissions averaging plan after which time the plan shall be considered 
approved.
    (2) The annual mass rate of total organic HAP (ETi, 
ETo) shall be calculated for each storage tank included in 
the emissions average using the procedures specified in paragraph 
(c)(1), (2), or (3) of this section.
    (3) Equations 57 and 58 of this subpart shall be used to calculate 
total HAP emissions for those tanks subject to Sec. 63.1253(b) or (c):
[GRAPHIC] [TIFF OMITTED] TR21SE98.051

[GRAPHIC] [TIFF OMITTED] TR21SE98.052

Where:

Eij = yearly mass rate of total HAP at the inlet of the 
control device for tank j
Eoj = yearly mass rate of total HAP at the outlet of the 
control device for tank j
ETi = total yearly uncontrolled HAP emissions
ETo = total yearly actual HAP emissions
n = number of tanks included in the emissions average

    (4) The overall percent reduction efficiency shall be calculated as 
follows:
[GRAPHIC] [TIFF OMITTED] TR21SE98.053

where:


[[Page 90]]


R = overall percent reduction efficiency
D = discount factor = 1.1 for all controlled storage tanks

    (h) Compliance with process vent provisions by using emissions 
averaging. An owner or operator with two or more affected processes 
complying with Sec. 63.1254 by using emissions averaging shall 
demonstrate compliance with paragraphs (h)(1), (2) and (3) of this 
section.
    (1) The owner or operator shall develop and submit for approval an 
Implementation Plan at least 6 months prior to the compliance date of 
the standard containing all the information required in Sec. 63.1259(e). 
The Administrator shall have 90 days to approve or disapprove the 
emissions averaging plan. The plan shall be considered approved if the 
Administrator either approves the plan in writing, or fails to 
disapprove the plan in writing. The 90-day period shall begin when the 
Administrator receives the request. If the request is denied, the owner 
or operator must still be in compliance with the standard by the 
compliance date.
    (2) Owners or operators shall calculate uncontrolled and controlled 
emissions of HAP by using the methods specified in paragraph (d)(2) and 
(3) of this section for each process included in the emissions average.
    (i) Equations 60 and 61 of this subpart shall be used to calculate 
total HAP emissions:
[GRAPHIC] [TIFF OMITTED] TR21SE98.054

where:

EUi = yearly uncontrolled emissions from process I
ECi = yearly actual emissions for process I
ETU = total yearly uncontrolled emissions
    ETC = total yearly actual emissions
n = number of processes included in the emissions average

    (3) The overall percent reduction efficiency shall be calculated 
using Equation 62 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR21SE98.055

[GRAPHIC] [TIFF OMITTED] TR21SE98.056

where:

R = overall percent reduction efficiency
D = discount factor = 1.1 for all controlled emission points



Sec. 63.1258  Monitoring Requirements.

    (a) The owner or operator of any existing, new, or reconstructed 
affected source shall provide evidence of continued compliance with the 
standard as specified in this section. During the initial compliance 
demonstration, maximum or minimum operating parameter levels, as 
appropriate, shall be established for emission sources that will 
indicate the source is in compliance. Test data, calculations, or 
information from the evaluation of the control device design shall be 
used to establish the operating parameter level.
    (b) Monitoring for control devices. (1) Parameters to monitor. 
Except as specified in paragraph (b)(1)(i) of this section, for each 
control device, the owner or operator shall install and operate 
monitoring devices and operate within the established parameter levels 
to ensure continued compliance with the standard. Monitoring parameters 
are specified for control scenarios in Table 4 of this subpart and in 
paragraphs (b)(1)(ii) through (xi) of this section.
    (i) Periodic verification. For control devices that control vent 
streams totaling less than 1 ton/yr HAP emissions, before control, 
monitoring shall consist of a daily verification that the device is 
operating properly. If the control device is used to control batch 
process vents alone or in combination with other streams, the 
verification may be on a per batch basis. This 
verification shall include, but not be limited to, a daily or per batch 
demonstration that the unit is working as designed and may include the 
daily measurements of the parameters described in (b)(1)(ii) through (x) 
of this section. This demonstration shall be included in the 
Precompliance report,

[[Page 91]]

to be submitted 6 months prior to the compliance date of the standard.
    (ii) Scrubbers. For affected sources using liquid scrubbers, the 
owner or operator shall establish a minimum scrubber liquid flow rate or 
pressure drop as a site-specific operating parameter which must be 
measured and recorded every 15 minutes during the period in which the 
scrubber is functioning in achieving the HAP removal required by this 
subpart. If the scrubber uses a caustic solution to remove acid 
emissions, the owner or operator shall establish a minimum pH of the 
effluent scrubber liquid as a site-specific operating parameter which 
must be monitored at least once a day. The minimum scrubber flowrate or 
pressure drop shall be based on the conditions anticipated under worst-
case conditions, as defined in Sec. 63.1257(b)(8)(i).
    (A) The monitoring device used to determine the pressure drop shall 
be certified by the manufacturer to be accurate to within a gage 
pressure of 10 percent of the maximum pressure drop 
measured.
    (B) The monitoring device used for measurement of scrubber liquid 
flowrate shall be certified by the manufacturer to be accurate within 
10 percent of the design scrubber liquid flowrate.
    (C) The monitoring device shall be calibrated annually.
    (iii) Condensers. For each condenser, the owner or operator shall 
establish the maximum condenser outlet gas temperature as a site-
specific operating parameter which must be measured and recorded at 
least every 15 minutes during the period in which the condenser is 
functioning in achieving the HAP removal required by this subpart.
    (A) The temperature monitoring device must be accurate to within 
2 percent of the temperature measured in degrees Celsius or 
2.5 deg.C, whichever is greater.
    (B) The temperature monitoring device must be calibrated annually.
    (iv) Regenerative carbon adsorbers. For each regenerative carbon 
adsorber, the owner or operator shall comply with the provisions in 
paragraphs (b)(1)(iv)(A) through (F) of this section.
    (A) Establish the regeneration cycle characteristics specified in 
paragraphs (b)(1)(iv)(A)(1) through (4) of this section under worst-case 
conditions, as defined in Sec. 63.1257(b)(8)(i).
    (1) Minimum regeneration frequency (i.e., operating time since last 
regeneration);
    (2) Minimum temperature to which the bed is heated during 
regeneration;
    (3) Maximum temperature to which the bed is cooled, measured within 
15 minutes of completing the cooling phase; and
    (4) Minimum regeneration stream flow.
    (B) Monitor and record the regeneration cycle characteristics 
specified in paragraphs (b)(1)(iv)(B)(1) through (4) of this section for 
each regeneration cycle.
    (1) Regeneration frequency (operating time since end of last 
regeneration);
    (2) Temperature to which the bed is heated during regeneration;
    (3) Temperature to which the bed is cooled, measured within 15 
minutes of the completion of the cooling phase; and
    (4) Regeneration stream flow.
    (C) Use a temperature monitoring device that is accurate to within 
2 percent of the temperature measured in degrees Celsius or 
 2.5  deg.C, whichever is greater.
    (D) Use a regeneration stream flow monitoring device capable of 
recording the total regeneration stream flow to within  10 
percent of the established value (i.e., accurate to within  
10 percent of the reading).
    (E) Calibrate the temperature and flow monitoring devices annually.
    (F) Conduct an annual check for bed poisoning in accordance with 
manufacturer's specifications.
    (v) Nonregenerative carbon adsorbers. For each nonregenerative 
carbon adsorber, the owner or operator shall establish and monitor the 
maximum time interval between replacement based on the conditions 
anticipated under worst-case, as defined in Sec. 63.1257(b)(8)(i).
    (vi) Flares. For each flare, the presence of the pilot flame shall 
be monitored every 15 minutes during the period in which the flare is 
functioning in

[[Page 92]]

achieving the HAP removal required by this subpart.
    (vii) Thermal incinerators. For each thermal incinerator, the owner 
or operator shall establish the minimum temperature of the gases exiting 
the combustion chamber as the site-specific operating parameter which 
must be measured and recorded at least once every 15 minutes during the 
period in which the combustion device is functioning in achieving the 
HAP removal required by this subpart.
    (A) The temperature monitoring device must be accurate to within 
 0.75 percent of the temperature measured in degrees Celsius 
or  2.5  deg.C, whichever is greater.
    (B) The monitoring device must be calibrated annually.
    (viii) Catalytic incinerators. For each catalytic incinerator, the 
owner or operator shall monitor the temperature of the gas stream 
immediately before and after the catalyst bed. The owner or operator 
shall establish the minimum temperature of the gas stream immediately 
before the catalyst bed and the minimum temperature difference across 
the catalyst bed as the site-specific operating parameter which must be 
monitored and recorded at leastonce every 15 minutes during the period 
in which the catalytic incinerator is functioning in achieving the HAP 
removal required by this subpart.
    (A) The temperature monitoring devices must be accurate to within 
 0.75 percent of the temperature measured in degrees Celsius 
or  2.5  deg.C, whichever is greater.
    (B) The temperature monitoring devices must be calibrated annually.
    (ix) Process heaters and boilers. (A) Except as specified in 
paragraph (b)(1)(ix)(B) of this section, for each boiler or process 
heater, the owner or operator shall establish the minimum temperature of 
the gases exiting the combustion chamber as the site-specific operating 
parameter which must be monitored and recorded at least once every 15 
minutes during the period in which the boiler or process heater is 
functioning in achieving the HAP removal required by this subpart.
    (1) The temperature monitoring device must be accurate to within 
0.75 percent of the temperature measured in degrees Celsius 
or 2.5 deg.C, whichever is greater.
    (2) The temperature monitoring device must be calibrated annually.
    (B) The owner or operator is exempt from the monitoring requirements 
specified in paragraph (b)(1)(ix)(A) of this section if either:
    (1) All vent streams are introduced with primary fuel; or
    (2) The design heat input capacity of the boiler or process heater 
is 44 megawatts or greater.
    (x) Continuous emission monitor. As an alternative to the parameters 
specified in paragraphs (b)(1)(ii) through (ix) of this section, an 
owner or operator may monitor and record the outlet HAP concentration or 
both the outlet TOC concentration and outlet hydrogen halide and halogen 
concentration every 15 minutes during the period in which the control 
device is functioning in achieving the HAP removal required by this 
subpart. The owner or operator need not monitor the hydrogen halide and 
halogen concentration if, based on process knowledge, the owner or 
operator determines that the emission stream does not contain hydrogen 
halides or halogens. The HAP or TOC monitor must meet the requirements 
of Performance Specification 8 or 9 of appendix B of part 60 and must be 
installed, calibrated, and maintained, according to Sec. 63.8. As part 
of the QA/QC Plan, calibration of the device must include, at a minimum, 
quarterly cylinder gas audits.
    (xi) CVS visual inspections. The owner or operator shall perform 
monthly visual inspections of each closed vent system as specified in 
Sec. 63.1252(b).
    (2) Averaging periods. Averaging periods for parametric monitoring 
levels shall be established according to paragraphs (b)(2)(i) through 
(iii) of this section.
    (i) Except as provided in paragraph (b)(2)(iii) of this section, a 
daily (24-hour) or block average shall be calculated as the average of 
all values for a monitored parameter level set according to the 
procedures in (b)(3)(iii) of this section recorded during the operating 
day or block.

[[Page 93]]

    (ii) The operating day or block shall be defined in the Notification 
of Compliance Status report. The daily average may be from midnight to 
midnight or another continuous 24-hour period. The block average is 
limited to a period of time that is, at a maximum, equal to the time 
from the beginning to end of a batch process.
    (iii) Monitoring values taken during periods in which the control 
devices are not functioning in controlling emissions, as indicated by 
periods of no flow, shall not be considered in the averages. Where flow 
to the device could be intermittent, the owner or operator shall 
install, calibrate and operate a flow indicator at the inlet or outlet 
of the control device to identify periods of no flow.
    (3) Procedures for setting parameter levels for control devices used 
to control emissions from process vents. (i) Small control devices. 
Except as provided in paragraph (b)(1)(i) of this section, for devices 
controlling less than 10 tons per year of HAP for which a performance 
test is not required, the parametric levels shall be set based on the 
design evaluation required in Sec. 63.1257(d)(3)(i). If a performance 
test is conducted, the monitoring parameter level shall be established 
according to the procedures in (b)(3)(ii) of this section.
    (ii) Large control devices. For devices controlling greater than 10 
tons per year of HAP for which a performance test is required, the 
parameter level must be established as follows:
    (A) If the operating parameter level to be established is a maximum, 
it must be based on the average of the values from each of the three 
test runs.
    (B) If the operating parameter level to be established is a minimum, 
it must be based on the average of the values from each of the three 
test runs.
    (C) The owner or operator may establish the parametric monitoring 
level(s) based on the performance test supplemented by engineering 
assessments and manufacturer's recommendations. Performance testing is 
not required to be conducted over the entire range of expected parameter 
values. The rationale for the specific level for each parameter, 
including any data and calculations used to develop the level(s) and a 
description of why the level indicates proper operation of the control 
device shall be provided in the Precompliance report. The procedures 
specified in this section have not been approved by the Administrator 
and determination of the parametric monitoring level using these 
procedures is subject to review and approval by the Administrator.
    (iii) Parameters for control devices controlling batch process 
vents. For devices controlling batch process vents alone or in 
combination with other streams, the parameter level(s) shall be 
established in accordance with paragraph (b)(3)(iii)(A) or (B) of this 
section.
    (A) If more than one batch emission episode has been selected to be 
controlled, a single level for the batch process(es) shall be determined 
from the initial compliance demonstration.
    (B) Instead of establishing a single level for the batch 
process(es), as described in paragraph (b)(3)(iii)(A) of this section, 
an owner or operator may establish separate levels for each batch 
emission episode, selected to be controlled. If separate monitoring 
levels are established, the owner or operator must provide a record 
indicating at what point in the daily schedule or log of processes 
required to be recorded per the requirements of Sec. 63.1259(b)(9) the 
parameter being monitored changes levels and must record at least one 
reading of the new parameter level, even if the duration of monitoring 
for the new parameter is less than 15-minutes.
    (4) Request approval to monitor alternative parameters. An owner or 
operator may request approval to monitor parameters other than those 
required by paragraphs (b)(1)(ii) through (ix) of this section. The 
request shall be submitted according to the procedures specified in 
Sec. 63.8(f) or included in the Precompliance report.
    (5) Monitoring for the alternative standards. For control devices 
that are used to comply with the provisions of Sec. 63.1253(d) or 
63.1254(c), the owner or operator shall monitor and record the outlet 
TOC concentration and the outlet hydrogen halide and halogen 
concentration every 15 minutes during the period in which the device is 
functioning in achieving the HAP removal

[[Page 94]]

required by this subpart. A TOC monitor meeting the requirements of 
Performance Specification 8 or 9 of appendix B of part 60 shall be 
installed, calibrated, and maintained, according to Sec. 63.8. The owner 
or operator need notmonitor the hydrogen halide and halogen 
concentration if, based on process knowledge, the owner or operator 
determines that the emission stream does not contain hydrogen halides or 
halogens.
    (6) Exceedances of operating parameters. An exceedance of an 
operating parameter is defined as one of the following:
    (i) If the parameter, averaged over the operating day or block, is 
below a minimum value established during the initial compliance 
demonstration.
    (ii) If the parameter, averaged over the operating day or block, is 
above the maximum value established during the initial compliance 
demonstration.
    (iii) Each loss of pilot flame for flares.
    (7) Excursions. Excursions are defined by either of the two cases 
listed in paragraphs (b)(7)(i) or (ii) of this section.
    (i) When the period of control device operation is 4 hours or 
greater in an operating day and monitoring data are insufficient to 
constitute a valid hour of data, as defined in paragraph (b)(7)(iii) of 
this section, for at least 75 percent of the operating hours.
    (ii) When the period of control device operation is less than 4 
hours in an operating day and more than one of the hours during the 
period of operation does not constitute a valid hour of data due to 
insufficient monitoring data.
    (iii) Monitoring data are insufficient to constitute a valid hour of 
data, as used in paragraphs (b)(7)(i) and (ii) of this section, if 
measured values are unavailable for any of the required 15-minute 
periods within the hour.
    (8) Violations. Exceedances of parameters monitored according to the 
provisions of paragraphs (b)(1)(ii) and (iv) through (ix) of this 
section or excursions as defined by paragraphs (b)(7)(i) through (iii) 
of this section constitute violations of the operating limit according 
to paragraphs (b)(8)(i), (ii), and (iv) of this section. Exceedances of 
the temperature limit monitored according to the provisions of paragraph 
(b)(1)(iii) of this section or exceedances of the outlet concentrations 
monitored according to the provisions of paragraph (b)(1)(x) of this 
section constitute violations of the emission limit according to 
paragraphs (b)(8)(i), (ii), and (iv) of this section. Exceedances of the 
outlet concentrations monitored according to the provisions of paragraph 
(b)(5) of this section constitute violations of the emission limit 
according to the provisions of paragraphs (b)(8)(iii) and (iv) of this 
section.
    (i) Except as provided in paragraph (b)(8)(iv) of this section, for 
episodes occurring more than once per day, exceedances of established 
parameter limits or excursions will result in no more than one violation 
per operating day for each monitored item of equipment utilized in the 
process.
    (ii) Except as provided in paragraph (b)(8)(iv) of this section, for 
control devices used for more than one process in the course of an 
operating day, exceedances or excursions will result in no more than one 
violation per operating day, per control device, for each process for 
which the control device is in service.
    (iii) Except as provided in paragraph (b)(8)(iv) of this section, 
exceedances of the 20 ppmv TOC outlet emission limit, averaged over the 
operating day, will result in no more than one violation per day per 
control device. Except as provided in paragraph (b)(8)(iv) of this 
section, exceedances of the 20 ppmv hydrogen halide or halogen outlet 
emission limit, averaged over the operating day, will result in no more 
than one violation per day per control device.
    (iv) Periods of time when monitoring measurements exceed the 
parameter values as well as periods of inadequate monitoring data do not 
constitute a violation if they occur during a startup, shutdown, or 
malfunction, and the facility follows its startup, shutdown, and 
malfunction plan.
    (c) Monitoring for emission limits. The owner or operator of any 
affected source complying with the provisions of Sec. 63.1254(a)(1) 
shall demonstrate continuous compliance with the 2,000 lb/yr emission 
limits by calculating daily a 365-day rolling summation of emissions. 
For owners and operators opting

[[Page 95]]

to switch compliance strategy from the 93 percent control requirement to 
the 2,000 lb/yr compliance method, as decribed in Sec. 63.1254(a), the 
rolling average must include emissions from the past 365 days. Each day 
that the total emissions per process exceeds 2,000 lb/yr will be 
considered a violation of the emission limit.
    (d) Monitoring for equipment leaks. The owner or operator of any 
affected source complying with the requirements of Sec. 63.1255 of this 
subpart shall meet the monitoring requirements described Sec. 63.1255 of 
this subpart.
    (e) Pollution prevention. The owner or operator of any affected 
source that chooses to comply with the requirements of 
Secs. 63.1252(e)(2) and (3) shall calculate a yearly rolling average of 
kg HAP consumption per kg production and kg VOC consumption per kg 
production every month or every 10 batches. Each rolling average kg/kg 
factor that exceeds the value established in Sec. 63.1257(f)(1)(ii) will 
be considered a violation of the emission limit.
    (f) Emissions averaging. The owner or operator of any affected 
source that chooses to comply with the requirements of Sec. 63.1252(d) 
shall meet all monitoring requirements specified in paragraphs (b)(1) 
and (3) of this section, as applicable, for all processes and storage 
tanks included in the emissions average.
    (g) Inspection and monitoring of waste management units and 
treatment processes. (1) For each wastewater tank, surface impoundment, 
container, individual drain system, and oil-water separator that 
receives, manages, or treats wastewater, a residual removed from 
wastewater, a recycled wastewater, or a recycled residual removed from 
wastewater, the owner or operator shall comply with the inspection 
requirements specified in Table 7 of this subpart.
    (2) For each biological treatment unit used to comply with 
Sec. 63.1256(g), the owner or operator shall monitor TSS, BOD, and the 
biomass concentration at a frequency approved by the permitting 
authority and using methods approved by the permitting authority. The 
owner or operator may request approval to monitor other parameters. The 
request shall be submitted in the Precompliance report according to the 
procedures specified in Sec. 63.1260(e), and shall include a description 
of planned reporting and recordkeeping procedures. The owner or operator 
shall include as part of the submittal the basis for the selected 
monitoring frequencies and the methods that will be used. The 
Administrator will specify appropriate reporting and recordkeeping 
requirements as part of the review of the permit application or by other 
appropriate means.
    (3) For nonbiological treatment units, the owner or operator shall 
request approval to monitor appropriate parameters that demonstrate 
proper operation of the selected treatment process. The request shall be 
submitted in the Precompliance report according to the procedures 
specified in Sec. 63.1260(e), and shall include a description of planned 
reporting and recordkeeping procedures. The Administrator will specify 
appropriate reporting and recordkeeping requirements as part of the 
review of the permit application or by other appropriate means.
    (h) Leak inspection provisions for vapor suppression equipment. (1) 
Except as provided in paragraph (h)(9) of this section, for each vapor 
collection system, closed-vent system, fixed roof, cover, or enclosure 
required to comply with this section, the owner or operator shall comply 
with the requirements of paragraphs (h)(2) through (8) of this section.
    (2) Except as provided in paragraphs (h)(6) and (7) of this section, 
each vapor collection system and closed-vent system shall be inspected 
according to the procedures and schedule specified in paragraphs 
(h)(2)(i) and (ii) of this section and each fixed roof, cover, and 
enclosure shall be inspected according to the procedures and schedule 
specified in paragraph (h)(2)(iii) of this section.
    (i) If the vapor collection system or closed-vent system is 
constructed of hard-piping, the owner or operator shall:
    (A) Conduct an initial inspection according to the procedures in 
paragraph (h)(3) of this section, and
    (B) Conduct annual visual inspections for visible, audible, or 
olfactory indications of leaks.

[[Page 96]]

    (ii) If the vapor collection system or closed-vent system is 
constructed of ductwork, the owner or operator shall:
    (A) Conduct an initial inspection according to the procedures in 
paragraph (h)(3) of this section, and
    (B) Conduct annual inspections according to the procedures in 
paragraph (h)(3) of this section.
    (C) Conduct annual visual inspections for visible, audible, or 
olfactory indications of leaks.
    (iii) For each fixed roof, cover, and enclosure, the owner or 
operator shall:
    (A) Conduct an initial inspection according to the procedures in 
paragraph (h)(3) of this section, and
    (B) Conduct semiannual visual inspections for visible, audible, or 
olfactory indications of leaks.
    (3) Each vapor collection system, closed-vent system, fixed roof, 
cover, and enclosure shall be inspected according to the procedures 
specified in paragraphs (h)(3)(i) through (v) of this section.
    (i) Inspections shall be conducted in accordance with Method 21 of 
40 CFR part 60, appendix A.
    (ii) Detection instrument performance criteria. (A) Except as 
provided in paragraph (h)(3)(ii)(B) of this section, the detection 
instrument shall meet the performance criteria of Method 21 of 40 CFR 
part 60, appendix A, except the instrument response factor criteria in 
section 3.1.2(a) of Method 21 shall be for the average composition of 
the process fluid not each individual VOC in the stream. For process 
streams that contain nitrogen, air, or other inerts which are not 
organic HAP or VOC, the average stream response factor shall be 
calculated on an inert-free basis.
    (B) If no instrument is available at the plant site that will meet 
the performance criteria specified in paragraph (h)(3)(ii)(A) of this 
section, the instrument readings may be adjusted by multiplying by the 
average response factor of the process fluid, calculated on an inert-
free basis as described in paragraph (h)(3)(ii)(A) of this section.
    (iii) The detection instrument shall be calibrated before use on 
each day of its use by the procedures specified in Method 21 of 40 CFR 
part 60, appendix A.
    (iv) Calibration gases shall be as follows:
    (A) Zero air (less than 10 parts per million hydrocarbon in air); 
and
    (B) Mixtures of methane in air at a concentration less than 10,000 
parts per million. A calibration gas other than methane in air may be 
used if the instrument does not respond to methane or if the instrument 
does not meet the performance criteria specified in paragraph 
(h)(2)(ii)(A) of this section. In such cases, the calibration gas may be 
a mixture of one or more of the compounds to be measured in air.
    (v) An owner or operator may elect to adjust or not adjust 
instrument readings for background. If an owner or operator elects to 
not adjust readings for background, all such instrument readings shall 
be compared directly to the applicable leak definition to determine 
whether there is a leak. If an owner or operator elects to adjust 
instrument readings for background, the owner or operator shall measure 
background concentration using the procedures in Sec. 63.180(b) and (c). 
The owner or operator shall subtract background reading from the maximum 
concentration indicated by the instrument.
    (vi) The background level shall be determined according to the 
procedures in Method 21 of 40 CFR part 60 appendix A.
    (vii) The arithmetic difference between the maximum concentration 
indicated by the instrument and the background level shall be compared 
with 500 parts per million for determining compliance.
    (4) Leaks, as indicated by an instrument reading greater than 500 
parts per million above background or by visual inspections, shall be 
repaired as soon as practicable, except as provided in paragraph (h)(5) 
of this section.
    (i) A first attempt at repair shall be made no later than 5 calendar 
days after the leak is detected.
    (ii) Repair shall be completed no later than 15 calendar days after 
the leak is detected, except as provided in paragraph (h)(4)(iii) of 
this section.
    (iii) For leaks found in vapor collection systems used for transfer 
operations, repairs shall be completed no later than 15 calendar days 
after the leak is detected or at the beginning of

[[Page 97]]

the next transfer loading operation, whichever is later.
    (5) Delay of repair of a vapor collection system, closed-vent 
system, fixed roof, cover, or enclosure for which leaks have been 
detected is allowed if the repair is technically infeasible without a 
shutdown, as defined in Sec. 63.1251, or if the owner or operator 
determines that emissions resulting from immediate repair would be 
greater than the fugitive emissions likely to result from delay of 
repair. Repair of such equipment shall be complete by the end of the 
next shutdown.
    (6) Any parts of the vapor collection system, closed-vent system, 
fixed roof, cover, or enclosure that are designated, as described in 
paragraph (h)(8)(i) of this section, as unsafe to inspect are exempt 
from the inspection requirements of paragraphs (h)(2)(i), (ii), and 
(iii) of this section if:
    (i) The owner or operator determines that the equipment is unsafe to 
inspect because inspecting personnel would be exposed to an imminent or 
potential danger as a consequence of complying with paragraphs 
(h)(2)(i), (ii), or (iii) of this section; and
    (ii) The owner or operator has a written plan that requires 
inspection of the equipment as frequently as practicable during safe-to-
inspect times.
    (7) Any parts of the vapor collection system, closed-vent system, 
fixed roof, cover, or enclosure that are designated, as described in 
paragraph (h)(8)(ii) of this section, as difficult to inspect are exempt 
from the inspection requirements of paragraphs (h)(2)(i), (ii), and 
(iii)(A) of this section if:
    (i) The owner or operator determines that the equipment cannot be 
inspected without elevating the inspecting personnel more than 2 meters 
above a support surface; and
    (ii) The owner or operator has a written plan that requires 
inspection of the equipment at least once every 5 years.
    (8) Records shall be maintained as specified in Sec. 63.1259(i) (4) 
through (9).
    (9) If a closed-vent system subject to this section is also subject 
to the equipment leak provisions of Sec. 63.1255, the owner or operator 
shall comply with the provisions of Sec. 63.1255 and is exempt from the 
requirements of this section.



Sec. 63.1259  Recordkeeping requirements.

    (a) Requirements of subpart A of this part. The owner or operator of 
an affected source shall comply with the recordkeeping requirements in 
subpart A of this part as specified in Table 1 of this subpart and in 
paragraphs (a)(1) through (5) of this section.
    (1) Data retention. Each owner or operator of an affected source 
shall keep copies of all records and reports required by this subpart 
for at least 5 years, as specified in Sec. 63.10(b)(1).
    (2) Records of applicability determinations. The owner or operator 
of a stationary source that is not subject to this subpart shall keep a 
record of the applicability determination, as specified in 
Sec. 63.10(b)(3).
    (3) Startup, shutdown, and malfunction plan. The owner or operator 
of an affected source shall develop and implement a written startup, 
shutdown, and malfunction plan as specified in Sec. 63.6(e)(3). This 
plan shall describe, in detail, procedures for operating and maintaining 
the affected source during periods of startup, shutdown, and malfunction 
and a program for corrective action for malfunctioning process, air 
pollution control, and monitoring equipment used to comply with this 
subpart. The owner or operator of an affected source shall keep the 
current and superseded versions of this plan onsite, as specified in 
Sec. 63.6(e)(3)(v). The owner or operator shall keep the startup, 
shutdown, and malfunction records specified in paragraphs (b)(3)(i) 
through (iii) of this section. Reports related to the plan shall be 
submitted as specified in Sec. 63.1260(i).
    (i) The owner or operator shall record the occurrence and duration 
of each malfunction of air pollution control equipment used to comply 
with this subpart, as specified in Sec. 63.6(e)(3)(iii).
    (ii) The owner or operator shall record the occurrence and duration 
of each malfunction of continuous monitoring systems used to comply with 
this subpart.
    (iii) For each startup, shutdown, or malfunction, the owner or 
operator shall record all information necessary to demonstrate that the 
procedures specified in the affected source's startup, shutdown, and 
malfunction plan were followed, as specified in

[[Page 98]]

Sec. 63.6(e)(3)(iii); alternatively, the owner or operator shall record 
any actions taken that are not consistent with the plan, as specified in 
Sec. 63.6(e)(3)(iv).
    (4) Recordkeeping requirements for sources with continuous 
monitoring systems. The owner or operator of an affected source who 
elects to install a continuous monitoring system shall maintain records 
specified in Sec. 63.10(c)(1) through (14).
    (5) Application for approval of construction or reconstruction. For 
new affected sources, each owner or operator shall comply with the 
provisions in Sec. 63.5 regarding construction and reconstruction, 
excluding the provisions specified in Sec. 63.5(d)(1)(ii)(H), (d)(2), 
and (d)(3)(ii).
    (b) Records of equipment operation. The owner or operator must keep 
the following records up-to-date and readily accessible:
    (1) Each measurement of a control device operating parameter 
monitored in accordance with Sec. 63.1258 and each measurement of a 
treatment process parameter monitored in accordance with 
Sec. 63.1258(g)(2) and (3).
    (2) For processes subject to Sec. 63.1252(e), records of 
consumption, production, and the rolling average values of the 
production-indexed HAP and VOC consumption factors.
    (3) For each continuous monitoring system used to comply with this 
subpart, records documenting the completion of calibration checks and 
maintenance of continuous monitoring systems.
    (4) For processes in compliance with the 2,000 lb/yr emission limit 
of Sec. 63.1254(a)(1), records of the rolling annual total emissions.
    (5) Records of the following, as appropriate:
    (i) The number of batches per year for each batch process.
    (ii) The operating hours per year for continuous processes.
    (6) Uncontrolled and controlled emissions per batch for each 
process.
    (7) Wastewater concentration per POD or process.
    (8) Number of storage tank turnovers per year, if used in an 
emissions average.
    (9) Daily schedule or log of each operating scenario prior to its 
operation.
    (10) Description of worst-case operating conditions as determined 
using the procedures described in Sec. 63.1257(b)(8) for control 
devices.
    (11) Periods of planned routine maintenance as described in 
Sec. 63.1257 (c)(5).
    (c) Records of operating scenarios. The owner or operator of an 
affected source shall keep records of each operating scenario which 
demonstrates compliance with this subpart.
    (d) Records of equipment leak detection and repair programs. The 
owner or operator of any affected source implementing the leak detection 
and repair (LDAR) program specified in Sec. 63.1255 of this subpart, 
shall implement the recordkeeping requirements in Sec. 63.1255 of this 
subpart.
    (e) Records of emissions averaging. The owner or operator of any 
affected source that chooses to comply with the requirements of 
Sec. 63.1252(d) shall maintain up-to-date records of the following 
information:
    (1) An Implementation Plan which shall include in the plan, for all 
process vents and storage tanks included in each of the averages, the 
information listed in paragraphs (e)(1)(i) through (v) of this section.
    (i) The identification of all process vents and storage tanks in 
each emissions average.
    (ii) The uncontrolled and controlled emissions of HAP and the 
overall percent reduction efficiency as determined in 
Secs. 63.1257(g)(1) through (4) or 63.1257(h)(1) through (3) as 
applicable.
    (iii) The calculations used to obtain the uncontrolled and 
controlled HAP emissions and the overall percent reduction efficiency.
    (iv) The estimated values for all parameters required to be 
monitored under Sec. 63.1258(f) for each process and storage tank 
included in an average.
    (v) A statement that the compliance demonstration, monitoring, 
inspection, recordkeeping and reporting provisions in Secs. 63.1257(g) 
and (h), 63.1258(f), and 63.1260(k) that are applicable to each emission 
point in the emissions average will be implemented beginning on the date 
of compliance.
    (2) The Implementation Plan must demonstrate that the emissions from 
the processes and storage tanks proposed to be included in the average 
will

[[Page 99]]

not result in greater hazard or, at the option of the operating permit 
authority, greater risk to human health or the environment than if the 
storage tanks and process vents were controlled according to the 
provisions in Secs. 63.1253 and 63.1254, respectively.
    (i) This demonstration of hazard or risk equivalency shall be made 
to the satisfaction of the operating permit authority.
    (A) The Administrator may require owners and operators to use 
specific methodologies and procedures for making a hazard or risk 
determination.
    (B) The demonstration and approval of hazard or risk equivalency 
shall be made according to any guidance that the Administrator makes 
available for use or any other technically sound information or methods.
    (ii) An emissions averaging plan that does not demonstrate hazard or 
risk equivalency to the satisfaction of the Administrator shall not be 
approved. The Administrator may require such adjustments to the 
emissions averaging plan as are necessary in order to ensure that the 
average will not result in greater hazard or risk to human health or the 
environment than would result if the emission points were controlled 
according to Secs. 63.1253 and 63.1254.
    (iii) A hazard or risk equivalency demonstration must:
    (A) Be a quantitative, comparative chemical hazard or risk 
assessment;
    (B) Account for differences between averaging and non-averaging 
options in chemical hazard or risk to human health or the environment; 
and
    (C) Meet any requirements set by the Administrator for such 
demonstrations.
    (3) Records as specified in paragraphs (a), (b) and (d) of this 
section.
    (4) A rolling quarterly calculation of the annual percent reduction 
efficiency as specified in Sec. 63.1257(g) and (h).
    (f) Records of delay of repair. Documentation of a decision to use a 
delay of repair due to unavailability of parts, as specified in 
Sec. 63.1256(i), shall include a description of the failure, the reason 
additional time was necessary (including a statement of why replacement 
parts were not kept onsite and when delivery from the manufacturer is 
scheduled), and the date when the repair was completed.
    (g) Record of wastewater stream or residual transfer. The owner or 
operator transferring an affected wastewater stream or residual removed 
from an affected wastewater stream in accordance with Sec. 63.1256(a)(5) 
shall keep a record of the notice sent to the treatment operator stating 
that the wastewater stream or residual contains organic HAP which are 
required to be managed and treated in accordance with the provisions of 
this subpart.
    (h) Records of extensions. The owner or operator shall keep 
documentation of a decision to use an extension, as specified in 
Sec. 63.1256(b)(6)(ii) or (b)(9), in a readily accessible location. The 
documentation shall include a description of the failure, documentation 
that alternate storage capacity is unavailable, and specification of a 
schedule of actions that will ensure that the control equipment will be 
repaired and the tank will be emptied as soon as practical.
    (i) Records of inspections. The owner or operator shall keep records 
specified in paragraphs (i)(1) through (9) of this section.
    (1) A record that each waste management unit inspection required by 
Sec. 63.1256(b) through (f) was performed.
    (2) A record that each inspection for control devices required by 
Sec. 63.1256(h) was performed.
    (3) A record of the results of each seal gap measurement required by 
Sec. 63.1256(b)(5) and (f)(3). The records shall include the date of 
measurement, the raw data obtained in the measurement, and the 
calculations described in Sec. 63.120(b)(2) through (4).
    (4) Records identifying all parts of the vapor collection system, 
closed-vent system, fixed roof, cover, or enclosure that are designated 
as unsafe to inspect in accordance with Sec. 63.1258(h)(6), an 
explanation of why the equipment is unsafe to inspect, and the plan for 
inspecting the equipment.
    (5) Records identifying all parts of the vapor collection system, 
closed-vent system, fixed roof, cover, or enclosure that are designated 
as difficult to inspect in accordance with Sec. 63.1258(h)(7), an 
explanation of why the equipment is difficult to inspect,

[[Page 100]]

and the plan for inspecting the equipment.
    (6) For each vapor collection system or closed-vent system that 
contains bypass lines that could divert a vent stream away from the 
control device and to the atmosphere, the owner or operator shall keep a 
record of the information specified in either paragraph (i)(6)(i) or 
(ii) of this section.
    (i) Hourly records of whether the flow indicator specified under 
Sec. 63.1252(b)(1) was operating and whether a diversion was detected at 
any time during the hour, as well as records of the times and durations 
of all periods when the vent stream is diverted from the control device 
or the flow indicator is not operating.
    (ii) Where a seal mechanism is used to comply with 
Sec. 63.1252(b)(2), hourly records of flow are not required. In such 
cases, the owner or operator shall record that the monthly visual 
inspection of the seals or closure mechanisms has been done, and shall 
record the occurrence of all periods when the seal mechanism is broken, 
the bypass line valve position has changed, or the key for a lock-and-
key type lock has been checked out, and records of any car-seal that has 
broken.
    (7) For each inspection conducted in accordance with 
Sec. 63.1258(h)(2) and (3) during which a leak is detected, a record of 
the information specified in paragraphs (i)(7)(i) through (viii) of this 
section.
    (i) The instrument identification numbers; operator name or 
initials; and identification of the equipment.
    (ii) The date the leak was detected and the date of the first 
attempt to repair the leak.
    (iii) Maximum instrument reading measured by the method specified in 
Sec. 63.1258(h)(4) after the leak is successfully repaired or determined 
to be nonrepairable.
    (iv) ``Repair delayed'' and the reason for the delay if a leak is 
not repaired within 15 calendar days after discovery of the leak.
    (v) The name, initials, or other form of identification of the owner 
or operator (or designee) whose decision it was that repair could not be 
effected without a shutdown.
    (vi) The expected date of successful repair of the leak if a leak is 
not repaired within 15 calendar days.
    (vii) Dates of shutdowns that occur while the equipment is 
unrepaired. (viii) The date of successful repair of the leak.
    (8) For each inspection conducted in accordance with 
Sec. 63.1258(h)(3) during which no leaks are detected, a record that the 
inspection was performed, the date of the inspection, and a statement 
that no leaks were detected.
    (9) For each visual inspection conducted in accordance with 
Sec. 63.1258(h)(2)(i)(B) or (h)(2)(iii)(B) of this section during which 
no leaks are detected, a record that the inspection was performed, the 
date of the inspection, and a statement that no leaks were detected.



Sec. 63.1260  Reporting requirements.

    (a) The owner or operator of an affected source shall comply with 
the reporting requirements of paragraphs (b) through (l) of this 
section. Applicable reporting requirements of Secs. 63.9 and 63.10 are 
also summarized in Table 1 of this subpart.
    (b) Initial notification. The owner or operator shall submit the 
applicable initial notification in accordance with Sec. 63.9(b) or (d).
    (c) Application for approval of construction or reconstruction. An 
owner or operator who is subject to Sec. 63.5(b)(3) shall submit to the 
Administrator an application for approval of the construction of a new 
major affected source, the reconstruction of a major affected source, or 
the reconstruction of a major source such that the source becomes a 
major affected source subject to the standards. The application shall be 
prepared in accordance with Sec. 63.5(d).
    (d) Notification of CMS performance evaluation. An owner or operator 
who is required by the Administrator to conduct a performance evaluation 
for a continuous monitoring system shall notify the Administrator of the 
date of the performance evaluation as specified in Sec. 63.8(e)(2).
    (e) Precompliance report. The Precompliance report shall be 
submitted at least 6 months prior to the compliance date of the 
standard. For

[[Page 101]]

new sources, the Precompliance report shall be submitted to the 
Administrator with the application for approval of construction or 
reconstruction. The Administrator shall have 90 days to approve or 
disapprove the plan. The plan shall be considered approved if the 
Administrator either approves the plan in writing, or fails to 
disapprove the plan in writing. The 90 day period shall begin when the 
Administrator receives the request. If the request is denied, the owner 
or operator must still be in compliance with the standard by the 
compliance date. To change any of the information submitted in the 
report, the owner or operator shall notify the Administrator 90 days 
before the planned change is to be implemented; the change shall be 
considered approved if the Administrator either approves the change in 
writing, or fails to disapprove the change in writing. The Precompliance 
report shall include:
    (1) Requests for approval to use alternative monitoring parameters 
or requests to set monitoring parameters according to 
Sec. 63.1258(b)(4).
    (2) Descriptions of the daily or per batch demonstrations to verify 
that control devices subject to Sec. 63.1258(b)(1)(i) are operating as 
designed.
    (3) A description of test conditions, and the corresponding 
monitoring parameter values for parameters that are set according to 
Sec. 63.1258(b)(3)(ii)(C).
    (4) For owners and operators complying with the requirements of 
Sec. 63.1252(e), the P2 demonstration summary required in 
Sec. 63.1257(f).
    (5) Data and rationale used to support an engineering assessment to 
calculate uncontrolled emissions from process vents as required in 
Sec. 63.1257(d)(2)(ii).
    (f) Notification of Compliance Status report. The Notification of 
Compliance Status report required under Sec. 63.9 shall be submitted no 
later than 150 days after the compliance date and shall include:
    (1) The results of any applicability determinations, emission 
calculations, or analyses used to identify and quantify HAP emissions 
from the affected source.
    (2) The results of emissions profiles, performance tests, 
engineering analyses, design evaluations, or calculations used to 
demonstrate compliance. For performance tests, results should include 
descriptions of sampling and analysis procedures and quality assurance 
procedures.
    (3) Descriptions of monitoring devices, monitoring frequencies, and 
the values of monitored parameters established during the initial 
compliance determinations, including data and calculations to support 
the levels established.
    (4) Listing of all operating scenarios.
    (5) Descriptions of worst-case operating and/or testing conditions 
for control devices.
    (6) Identification of emission points subject to overlapping 
requirements described in Sec. 63.1250(h) and the authority under which 
the owner or operator will comply.
    (g) Periodic reports. An owner or operator shall prepare Periodic 
reports in accordance with paragraphs (g)(1) and (2) of this section and 
submit them to the Administrator.
    (1) Submittal schedule. Except as provided in (g)(1) (i), (ii) and 
(iii) of this section, an owner or operator shall submit Periodic 
reports semiannually, beginning 60 operating days after the end of the 
applicable reporting period. The first report shall be submitted no 
later than 240 days after the date the Notification of Compliance Status 
is due and shall cover the 6-month period beginning on the date the 
Notification of Compliance Status is due.
    (i) When the Administrator determines on a case-by-case basis that 
more frequent reporting is necessary to accurately assess the compliance 
status of the affected source; or
    (ii) When the monitoring data are used directly for compliance 
determination and the source experience excess emissions, in which case 
quarterly reports shall be submitted. Once an affected source reports 
excess emissions, the affected source shall follow a quarterly reporting 
format until a request to reduce reporting frequency is approved. If an 
owner or operator submits a request to reduce the frequency of 
reporting, the provisions in Sec. 63.10(e)(3)(ii) and (iii) shall apply, 
except that the

[[Page 102]]

term ``excess emissions and continuous monitoring system performance 
report and/or summary report'' shall mean ``Periodic report'' for the 
purposes of this section.
    (iii) When a new operating scenario has been operated since the last 
report, in which case quarterly reports shall be submitted.
    (2) Content of Periodic report. The owner or operator shall include 
the information in paragraphs (g)(2)(i) through (vii) of this section, 
as applicable.
    (i) Each Periodic report must include the information in 
Sec. 63.10(e)(3)(vi)(A) through (I) and (K) through (M). For each 
continuous monitoring system, the Periodic report must also include the 
information in Sec. 63.10(e)(3)(vi)(J).
    (ii) If the total duration of excess emissions, parameter 
exceedances, or excursions for the reporting period is 1 percent or 
greater of the total operating time for the reporting period, or the 
total continuous monitoring system downtime for the reporting period is 
5 percent or greater of the total operating time for the reporting 
period, the Periodic report must include the information in paragraphs 
(g)(2)(ii)(A) through (D) of this section.
    (A) Monitoring data, including 15-minute monitoring values as well 
as daily average values of monitored parameters, for all operating days 
when the average values were outside the ranges established in the 
Notification of Compliance Status report or operating permit.
    (B) Duration of excursions, as defined in Sec. 63.1258(b)(7).
    (C) Operating logs and operating scenarios for all operating 
scenarios for all operating days when the values are outside the levels 
established in the Notification of Compliance Status report or operating 
permit.
    (D) When a continuous monitoring system is used, the information 
required in Sec. 63.10(c)(5) through (13).
    (iii) For each inspection conducted in accordance with 
Sec. 63.1258(h)(2) or (3) during which a leak is detected, the records 
specified in Sec. 63.1259(i)(7) must be included in the next Periodic 
report.
    (iv) For each vapor collection system or closed vent system with a 
bypass line subject to Sec. 63.1252(b)(1), records required under 
Sec. 63.1259(i)(6)(i) of all periods when the vent stream is diverted 
from the control device through a bypass line. For each vapor collection 
system or closed vent system with a bypass line subject to 
Sec. 63.1252(b)(2), records required under Sec. 63.1259(i)(6)(ii) of all 
periods in which the seal mechanism is broken, the bypass valve position 
has changed, or the key to unlock the bypass line valve was checked out.
    (v) The information in paragraphs (g)(2)(iv)(A) through (D) of this 
section shall be stated in the Periodic report, when applicable.
    (A) No excess emissions.
    (B) No exceedances of a parameter.
    (C) No excursions.
    (D) No continuous monitoring system has been inoperative, out of 
control, repaired, or adjusted.
    (vi) For each tank subject to control requirements, periods of 
planned routine maintenance during which the control device does not 
meet the specifications of Sec. 63.1253(b) through (d).
    (vii) Each new operating scenario which has been operated since the 
time period covered by the last Periodic report. For the initial 
Periodic report, each operating scenario for each process operated since 
the compliance date shall be submitted.
    (h) Notification of process change.
    (1) Except as specified in paragraph (h)(2) of this section, 
whenever a process change is made, or a change in any of the information 
submitted in the Notification of Compliance Status Report, the owner or 
operator shall submit a report quarterly. The report may be submitted as 
part of the next Periodic report required under paragraph (g) of this 
section. The report shall include:
    (i) A brief description of the process change.
    (ii) A description of any modifications to standard procedures or 
quality assurance procedures.
    (iii) Revisions to any of the information reported in the original 
Notification of Compliance Status Report under paragraph (f) of this 
section.
    (iv) Information required by the Notification of Compliance Status 
Report under paragraph (f) of this section for changes involving the 
addition of processes or equipment.

[[Page 103]]

    (2) An owner or operator must submit a report 60 days before the 
scheduled implementation date of either of the following:
    (i) Any change in the activity covered by the Precompliance report.
    (ii) A change in the status of a control device from small to large.
    (i) Reports of startup, shutdown, and malfunction. For the purposes 
of this subpart, the startup, shutdown, and malfunction reports shall be 
submitted on the same schedule as the periodic reports required under 
paragraph (g) of this section instead of the schedule specified in 
Sec. 63.10(d)(5)(i). These reports shall include the information 
specified in Sec. 63.1259(a)(3)(i) through (iii) and shall contain the 
name, title, and signature of the owner or operator or other responsible 
official who is certifying its accuracy. Reports are only required if a 
startup, shutdown, or malfunction occurred during the reporting period. 
Any time an owner or operator takes an action that is not consistent 
with the procedures specified in the affected source's startup, 
shutdown, and malfunction plan, the owner or operator shall submit an 
immediate startup, shutdown, and malfunction report as specified in 
Sec. 63.10(d)(4)(ii).
    (j) Reports of LDAR programs. The owner or operator of any affected 
source implementing the LDAR program specified in Sec. 63.1255 of this 
subpart shall implement the reporting requirements in Sec. 63.1255 of 
this subpart. Copies of all reports shall be retained as records for a 
period of 5 years, in accordance with the requirements of 
Sec. 63.10(b)(1).
    (k) Reports of emissions averaging. The owner or operator of any 
affected source that chooses to comply with the requirements of 
Sec. 63.1252(d) shall submit the implementation plan described in 
Sec. 63.1259(e) 6 months prior to the compliance date of the standard 
and the following information in the periodic reports:
    (1) The records specified in Sec. 63.1259(e) for each process or 
storage tank included in the emissions average;
    (2) All information as specified in paragraph (g) of this section 
for each process or storage tank included in the emissions average;
    (3) Any changes of the processes or storage tanks included in the 
average.
    (4) The calculation of the overall percent reduction efficiency for 
the reporting period.
    (5) Changes to the Implementation Plan which affect the calculation 
methodology of uncontrolled or controlled emissions or the hazard or 
risk equivalency determination.
    (6) Every second semiannual or fourth quarterly report, as 
appropriate, shall include the results according to Sec. 63.1259(e)(4) 
to demonstrate the emissions averaging provisions of Secs. 63.1252(d), 
63.1257(g) and (h), 63.1258(f), and 63.1259(f) are satisfied.
    (l) Notification of performance test and test plan. The owner or 
operator of an affected source shall notify the Administrator of the 
planned date of a performance test at least 60 days before the test in 
accordance with Sec. 63.7(b). The owner or operator also must submit the 
test plan required by Sec. 63.7(c) and the emission profile required by 
63.1257(b)(8)(ii) with the notification of the performance test.
    (m) Request for extension of compliance. An owner or operator may 
submit to the Administrator a request for an extension of compliance in 
accordance with Sec. 63.1250(f)(4).



Sec. 63.1261  Delegation of authority.

    (a) In delegating implementation and enforcement authority to a 
State under Sec. 112(d) of the Clean Air Act, the authorities contained 
in paragraph (b) of this section shall be retained by the Administrator 
and not transferred to a State.
    (b) The authority conferred in Sec. 63.177; the authority to approve 
applications for determination of equivalent means of emission 
limitation; and the authority to approve alternative test methods shall 
not be delegated to any State.

[[Page 104]]



                    Table 1 To Subpart GGG.--General Provisions Applicability To Subpart GGG
----------------------------------------------------------------------------------------------------------------
                                                                   Applies to
 General provisions reference      Summary of requirements         subpart GGG               Comments
----------------------------------------------------------------------------------------------------------------
63.1(a)(1)...................  General applicability of the     Yes.............  Additional terms defined in
                                General Provisions.                                Sec.  63.1251; when overlap
                                                                                   between subparts A and GGG of
                                                                                   this part, subpart GGG takes
                                                                                   precedence.
63.1(a)(2-7).................  ...............................  Yes               ..............................
63.1(a)(8)...................  ...............................  No..............  Discusses state programs.
63.1(a)(9-14)................  ...............................  Yes               ..............................
63.1(b)(1)...................  Initial applicability            Yes.............  Subpart GGG clarifies the
                                determination.                                     applicability in Sec.
                                                                                   63.1250.
63.1(b)(2)...................  Title V operating permit--see    Yes.............  All major affected sources are
                                part 70.                                           required to obtain a title V
                                                                                   permit.
63.1(b)(3)...................  Record of the applicability      Yes.............  All affected sources are
                                determination.                                     subject to subpart GGG
                                                                                   according to the
                                                                                   applicability definition of
                                                                                   subpart GGG.
63.1(c)(1)...................  Applicability after standards    Yes.............  Subpart GGG clarifies the
                                are set.                                           applicability of each
                                                                                   paragraph of subpart A to
                                                                                   sources subject to subpart
                                                                                   GGG.
63.1(c)(2)...................  Title V permit requirement.....  No..............  All major affected sources are
                                                                                   required to obtain a title V
                                                                                   permit. Area sources are not
                                                                                   subject to subpart GGG.
63.1(c)(3)...................  Reserved                         ................  ..............................
63.1(c)(4)...................  Requirements for existing        Yes               ..............................
                                source that obtains an
                                extension of compliance.
63.1(c)(5)...................  No.............................  Notification      Yes
                                                                 requirements
                                                                 for an area
                                                                 source that
                                                                 increases HAP
                                                                 emissions to
                                                                 major source
                                                                 levels.
63.1(d)......................  [Reserved].....................  NA
63.1(e)......................  Applicability of permit program  Yes
                                before a relevant standard has
                                been set.
63.2.........................  Definitions....................  Yes.............  Additional terms defined in
                                                                                   Sec.  63.1251; when overlap
                                                                                   between subparts A and GGG of
                                                                                   this part occurs, subpart GGG
                                                                                   takes precedence.
63.3.........................  Units and abbreviations........  Yes.............  Other units used in subpart
                                                                                   GGG are defined in that
                                                                                   subpart.
63.4.........................  Prohibited activities..........  Yes
63.5(a)......................  Construction and                 Yes.............  Except replace the terms
                                reconstruction--applicability.                     ``source'' and ``stationary
                                                                                   source'' with ``affected
                                                                                   source''.
63.5(b)(1)...................  Upon construction, relevant      Yes
                                standards for new sources.
63.5(b)(2)...................  [Reserved].....................  NA
63.5(b)(3)...................  New construction/reconstruction  Yes
63.5(b)(4)...................  Construction/reconstruction      Yes
                                notification.
63.5(b)(5)...................  Construction/reconstruction      Yes
                                compliance.
63.5(b)(6)...................  Equipment addition or process    Yes
                                change.
63.5(c)......................  [Reserved].....................  NA
63.5(d)......................  Application for approval of      Yes.............  Except for certain provisions
                                construction/reconstruction.                       identified in 63.1259(a)(5)
63.5(e)......................  ...............................  Construction/     Yes
                                                                 reconstruction
                                                                 approval..
63.5(f)......................  Construction/reconstruction      Yes.............  Except replace ``source'' with
                                approval based on prior State                      ``affected source''.
                                review..

[[Page 105]]

 
63.6(a)(1)...................  Compliance with standards and    Yes
                                maintenance requirements.
63.6(a)(2)...................  Requirements for area source     Yes
                                that increases emissions to
                                become major.
63.6(b)(1-2).................  Compliance dates for new and     No..............  Subpart GGG specifies
                                reconstructed sources.                             compliance dates.
63.6(b)(3-6).................  Compliance dates for area        Yes
                                sources that become major
                                sources.
63.6 (b)(7)..................  Compliance dates for new         No..............  Subpart GGG specifies NS
                                sources resulting from new                         applicability and compliance
                                unaffected area sources                            dates
                                becoming subject to standards.
63.6(c)......................  Compliance dates for existing    Yes.............   Except replace ``source''
                                sources.                                           with ``affected source''.
                                                                                   Subpart GGG specifies
                                                                                   compliance dates.
63.6(e)......................  Operation and maintenance        Yes.............  Startup, Shutdown, Malfunction
                                requirements.                                      Plan requirements
                                                                                   specifically include
                                                                                   malfunction process, control
                                                                                   and monitoring equipment.
63.6(f)-(g)..................  Compliance with nonopacity and   Yes.............  Except that subpart GGG
                                alternative nonopacity                             specifies performance test
                                emission standards.                                conditions.
63.6(h)......................  Opacity and visible emission     No..............  Subpart GGG does not contain
                                standards.                                         any opacity or visible
                                                                                   emission standards.
63.6(i)......................  Extension of compliance with     No..............  Sec.  63.1250(f)(4) specifies
                                emission standards.                                provisions for compliance
                                                                                   extensions.
63.6(j)......................  Exemption from compliance with   Yes
                                emission standards.
63.7(a)(1)...................  Performance testing              Yes.............  Subpart GGG specifies required
                                requirements..                                     testing and compliance
                                                                                   procedures.
63.7(a)(2)(I-ix).............  ...............................  Yes
63.7(a)(3)...................  ...............................  Yes
63.7(b)(1)...................  Notification of performance      Yes
                                test.
63.7(b)(2)...................  Notification of delay in         Yes
                                conducting a scheduled
                                performance test.
63.7(c)......................  Quality assurance program......  Yes.............  Except that the test plan must
                                                                                   be submitted with the
                                                                                   notification of the
                                                                                   performance test.
63.7(d)......................  Performance testing facilities.  Yes.............  Except replace ``source'' with
                                                                                   ``affected source''.
63.7(e)......................  Conduct of performance tests...  Yes.............  Subpart GGG also contains test
                                                                                   methods and procedures
                                                                                   specific to pharmaceutical
                                                                                   sources.
63.7(f)......................  Use of alternative test method.  Yes
63.7(g)......................  Data analysis, recordkeeping,    Yes
                                and reporting.
63.7(h)......................  Waiver of performance tests....  Yes
63.8(a)......................  Monitoring requirements........  Yes.............  See Sec.  63.1258.
63.8(b)(1)...................  Conduct of monitoring..........  Yes
63.8(b)(2)...................  CMS and combined effluents.....  No..............  Sec.  63.1258 of subpart GGG
                                                                                   provides specific CMS
                                                                                   requirements.
63.8(b)(3)-(c)(3)............  CMS requirements...............  Yes
63.8(c)(4-5).................  CMS operation requirements.....  Yes
63.8 (c)6-8).................  CMS calibration and malfunction  Yes
                                provisions.
63.8(d)......................  CMS quality control program....  Yes
63.8(e)(1)...................  Performance evaluations of CMS.  Yes
63.8(e)(2)...................  Notification of performance      Yes               ..............................
                                evaluation.
63.8(e)(3-4).................  CMS requirements/alternatives..  Yes               ..............................
63.8(e)(5)(i)................  Reporting performance            Yes.............  See Sec.
                                evaluation results.
63.1260 (a)..................
63.8(e)(5)(ii)...............  Results of COMS performance      No..............  Subpart GGG does not contain
                                evaluation.                                        any opacity or visible
                                                                                   emission standards.
63.8(f)-(g)..................  Alternative monitoring method/   Yes               ..............................
                                reduction of monitoring data.
63.9(a)-(d)..................  Notification requirements--      Yes               ..............................
                                Applicability and general
                                information.
63.9(e)......................  Notification of performance      Yes               ..............................
                                test.
63.9(f)......................  Notification of opacity and      No..............  Subpart GGG does not contain
                                visible emissions observations.                    any opacity or visible
                                                                                   emission standards.
63.9(g)(1)...................  Additional notification          Yes               ..............................
                                requirements for sources with
                                CMS.

[[Page 106]]

 
63.9(g)(2)...................  Notification of compliance with  No..............  Subpart GGG does not contain
                                opacity emission standard.                         any opacity or visible
                                                                                   emission standards.
63.9(g)(3)...................  Notification that criterion to   Yes               ..............................
                                continue use of alternative to
                                relative accuracy testing has
                                been exceeded.
63.9(h)......................  Notification of compliance       Yes.............  Due 150 days after compliance
                                status..                                           date.
63.9(i)......................  Adjustment to time periods or    Yes               ..............................
                                postmark deadlines for
                                submittal and review of
                                required communications.
63.9(j)......................  Change in information provided.  Yes               ..............................
63.10(a).....................  Recordkeeping requirements.....  Yes.............  See Sec.
63.1259......................
63.10(b)(1)..................  Records retention..............  Yes               ..............................
63.10(b)(2)..................  Information and documentation    No..............  Subpart GGG specifies
                                to support notifications.                          recordkeeping requirements.
63.10(b)(3)..................  Records retention for sources    Yes.............   Applicability requirements
                                not subject to relevant                            are given in Sec.  63.1250.
                                standard.
63.10(c)-(d)(2)..............  Other recordkeeping and          Yes.............
                                reporting provisions.
63.10(d)(3)..................  Reporting results of opacity or  No..............  Subpart GGG does not include
                                visible emissions observations.                    any opacity or visible
                                                                                   emission standards.
63.10(d)(4-5)................  Other recordkeeping and          Yes.............
                                reporting provisions.
63.10(e).....................  Additional CMS reporting         Yes.............
                                requirements.
63.10(f).....................  Waiver of recordkeeping or       Yes.............
                                reporting requirements..
63.11........................  Control device requirements for  Yes.............
                                flares.
63.12........................  State authority and delegations  Yes.............  See Sec.  63.1261.
63.13........................  Addresses of State air           Yes.............
                                pollution control agencies.
63.14........................  Incorporations by reference....  Yes.............
63.15........................  Availability of information and  Yes.............
                                confidentiality.
----------------------------------------------------------------------------------------------------------------


[[Page 107]]


             Table 2 To Subpart GGG.--Partially Soluble HAP
------------------------------------------------------------------------
 
-------------------------------------------------------------------------
1,1,1-Trichloroethane (methyl chloroform)
1,1,2,2-Tetrachloroethane
1,1,2-Trichloroethane
1,1-Dichloroethylene (vinylidene chloride)
1,2-Dibromoethane
1,2-Dichloroethane (ethylene dichloride)
1,2-Dichloropropane
1,3-Dichloropropene
2,4,5-Trichlorophenol
2-Butanone (mek)
1,4-Dichlorobenzene
2-Nitropropane
4-Methyl-2-pentanone (mibk)
Acetaldehyde
Acrolein
Acrylonitrile
Allyl chloride
Benzene
Benzyl chloride
Biphenyl
Bromoform (tribromomethane)
Bromomethane
Butadiene
Carbon disulfide
Chlorobenzene
Chloroethane (ethyl chloride)
Chloroform
Chloromethane
Chloroprene
Cumene
Dichloroethyl ether
Dinitrophenol
Epichlorohydrin
Ethyl acrylate
Ethylbenzene
Ethylene oxide
Hexachlorobenzene
Hexachlorobutadiene
Hexachloroethane
Methyl methacrylate
Methyl-t-butyl ether
Methylene chloride
N,N-dimethylaniline
Propionaldehyde.
Propylene oxide
Styrene
Tetrachloroethene (perchloroethylene)
Tetrachloromethane (carbon tetrachloride
Toluene
Trichlorobenzene (1,2,4-)
Trichloroethylene
Triethylamine
Trimethylpentane
Vinyl acetate
Vinyl chloride
Xylene (m)
Xylene (o)
Xylene (p)
N-hexane
------------------------------------------------------------------------


                  Table 3 To Subpart GGG.--Soluble HAP
------------------------------------------------------------------------
                                Compound
-------------------------------------------------------------------------
1,1-Dimethylhydrazine.
1,4-Dioxane.
Acetonitrile.
Acetophenone.
Diethyl sulfate.
Dimethyl sulfate.
Dinitrotoluene.
Ethylene glycol dimethyl ether.
Ethylene glycol monobutyl ether acetate.
Ethylene glycol monomethyl ether acetate.
Isophorone.
Methanol (methyl alcohol).
Nitrobenzene.
Toluidene.
------------------------------------------------------------------------


[[Page 108]]


                     Table 4 to Subpart GGG.--Monitoring Requirements for Control Devices a
----------------------------------------------------------------------------------------------------------------
                                      Monitoring equipment        Parameters to be
          Control device                    required                  monitored                 Frequency
----------------------------------------------------------------------------------------------------------------
All control devices..............  1. Flow indicator          1. Presence of flow       Hourly records of
                                    installed at all bypass    diverted from the         whether the flow
                                    lines to the atmosphere    control device to the     indicator was operating
                                    and equipped with          atmosphere or.            and whether a diversion
                                    continuous recorder or.                              was detected at any
                                                                                         time during each hour.
                                   2. Valves sealed closed    2. Monthly inspections    Monthly.
                                    with car-seal or lock-     of sealed valves.
                                    and-key configuration.
Scrubber.........................  Liquid flow rate or        1. Liquid flow rate into  1. Every 15 minutes.
                                    pressure drop mounting     or out of the scrubber
                                    device. Also a pH          or the pressure drop
                                    monitor if the scrubber    across the scrubber.
                                    is used to control acid
                                    emissions.
                                                              2. pH of effluent         2. Once a day.
                                                               scrubber liquid.
Thermal incinerator..............  Temperature monitoring     Firebox temperature.....  Every 15 minutes.
                                    device installed in
                                    firebox or in ductwork
                                    immediately downstream
                                    of firebox b.
Catalytic incinerator............  Temperature monitoring     Temperature difference    Every 15 minutes.
                                    device installed in gas    across catalyst bed.
                                    stream immediately
                                    before and after
                                    catalyst bed.
Flare............................  Heat sensing device        Presence of a flame at    Every 15 minutes.
                                    installed at the pilot     the pilot light.
                                    light.
Boiler or process heater 44 mega   Temperature monitoring     Combustion temperature..  Every 15 minutes.
 watts and vent stream is not       device installed in
 mixed with the primary fuel.       firebox b.
Condenser........................  Temperature monitoring     Condenser exit (product   Every 15 minutes.
                                    device installed at        side) temperature.
                                    condenser exit.
Carbon adsorber (nonregenerative)  None.....................  Operating time since      N/A.
                                                               last replacement.
Carbon adsorber (regenerative)...  Stream flow monitoring     1. Total regeneration     1. For each regeneration
                                    device, and.               stream mass or            cycle, record the total
                                                               volumetric flow during    regeneration stream
                                                               carbon bed regeneration   mass or volumetric
                                                               cycle(s).                 flow.
                                   Carbon bed temperature     2. Temperature of carbon  2. For each regeneration
                                    monitoring device.         bed after regeneration.   cycle, record the
                                                                                         maximum carbon bed-
                                                                                         temperature.
                                                              3. Temperature of carbon  3. Within 15 minutes of
                                                               bed within 15 minutes     completing any cooling
                                                               of completing any         cycle, record the
                                                               cooling cycle(s).         carbon bed temperature.
                                                              4. Operating time since   4. Operating time to be
                                                               end of last               based on worst-case
                                                               regeneration.             conditions.
                                                              5. Check for bed          5. Yearly.
                                                               poisoning.
----------------------------------------------------------------------------------------------------------------
a As an alternative to the monitoring requirements specified in this table, the owner or operator may use a CEM
  meeting the requirements of Performance Specifications 8 or 9 of appendix B of part 60 to monitor TOC every 15
  minutes.
b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any
  substantial heat exchange is encountered.


[[Page 109]]


  Table 5 To Subpart GGG.--Control Requirements for Items of Equipment
               That Meet the Criteria of Sec.  63.1252(f)
------------------------------------------------------------------------
      Item of equipment                  Control requirement a
------------------------------------------------------------------------
Drain or drain hub...........  (a) Tightly fitting solid cover (TFSC);
                                or
                               (b) TFSC with a vent to either a process,
                                or to a fuel gas system, or to a control
                                device meeting the requirements of Sec.
                                63.1256(h)(2); or
                               (c) Water seal with submerged discharge
                                or barrier to protect discharge from
                                wind.
Manhole b....................  (a) TFSC; or
                               (b) TFSC with a vent to either a process,
                                or to a fuel gas system, or to a control
                                device meeting the requirements of Sec.
                                63.1256(h)(2); or
                               (c) If the item is vented to the
                                atmosphere, use a TFSC with a properly
                                operating water seal at the entrance or
                                exit to the item to restrict ventilation
                                in the collection system. The vent pipe
                                shall be at least 90 cm in length and
                                not exceeding 10.2 cm in nominal inside
                                diameter.
Lift station.................  (a) TFSC; or
                               (b) TFSC with a vent to either a process,
                                or to a fuel gas system, or to a control
                                device meeting the requirements of Sec.
                                63.1256(h)(2); or
                               (c) If the lift station is vented to the
                                atmosphere, use a TFSC with a properly
                                operating water seal at the entrance or
                                exit to the item to restrict ventilation
                                in the collection system. The vent pipe
                                shall be at least 90 cm in length and
                                not exceeding 10.2 cm in nominal inside
                                diameter. The lift station shall be
                                level controlled to minimize changes in
                                the liquid level.
  Trench.....................  (a) TFSC; or
                               (b) TFSC with a vent to either a process,
                                or to a fuel gas system, or to a control
                                device meeting the requirements of Sec.
                                63.1256(h)(2); or
                               (c) If the item is vented to the
                                atmosphere, use a TFSC with a properly
                                operating water seal at the entrance or
                                exit to the item to restrict ventilation
                                in the collection system. The vent pipe
                                shall be at least 90 cm in length and
                                not exceeding 10.2 cm in nominal inside
                                diameter.
Pipe.........................  Each pipe shall have no visible gaps in
                                joints, seals, or other emission
                                interfaces
Oil/Water separator..........  (a) Equip with a fixed roof and route
                                vapors to a process or to a fuel gas
                                system, or equip with a closed-vent
                                system that routes vapors to a control
                                device meeting the requirements of Sec.
                                63.1256(h)(2); or
                               (b) Equip with a floating roof that meets
                                the equipment specifications of Sec.
                                60.693 (a)(1)(i), (a)(1)(ii), (a)(2),
                                (a)(3), and (a)(4).
 Tank........................  Maintain a fixed roof.c If the tank is
                                spargedd or used for heating or treating
                                by means of an exothermic reaction, a
                                fixed roof and a system shall be
                                maintained that routes the organic
                                hazardous air pollutants vapors to other
                                process equipment or a fuel gas system,
                                or a closed-vent system that routes
                                vapors to a control device that meets
                                the requirements of 40 CFR Sec.  63.119
                                (e)(1) or (e)(2).
------------------------------------------------------------------------
 AAAa Where a tightly fitting solid cover is required, it shall be
  maintained with no visible gaps or openings, except during periods of
  sampling, inspection, or maintenance.
 AAAb Manhole includes sumps and other points of access to a conveyance
  system.
 AAAc A fixed roof may have openings necessary for proper venting of the
  tank, such as pressure/vacuum vent, j-pipe vent.
 AAA d The liquid in the tank is agitated by injecting compressed air or
  gas.


 Table 6 to Subpart GGG.--Wastewater--Compliance Options for Wastewaster
                                  Tanks
------------------------------------------------------------------------
                               Maximum true
       Capacity, m\3\              vapor         Control requirements
                               pressure, kPa
------------------------------------------------------------------------
75..........................  ..............  Sec.  63.1256(b)(1).
>75 and 151.................            13.1  Sec.  63.1256(b)(1).
                                       >13.1  Sec.  63.1256(b)(2).
>151........................             5.2  Sec.  63.1256(b)(1).
                                        >5.2  Sec.  63.1256(b)(2).
------------------------------------------------------------------------


[[Page 110]]


                         Table 7 to Subpart GGG.--Wastewater--Inspection and Monitoring Requirements for Waste Management Units
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                      Inspection or monitoring   Frequency of inspection or
           To comply with                    requirement                 monitoring                                     Method
--------------------------------------------------------------------------------------------------------------------------------------------------------
TANKS:
    63.1256(b)(3)(i)...............  Inspect fixed roof and all  Initially Semiannually....  Visual.
                                      openings for leaks.
    63.1256(b)(4)..................  Inspect floating roof in    See Secs.  63.120(a)(2)     Visual.
                                      accordance with Secs.       and (a)(3).
                                      63.120(a)(2) and (a)(3).
    63.1256(b)(5)..................  Measure floating roof seal  ..........................  See Sec.  63.120(b)(2)(i) through (b)(4).
                                      gaps in accordance with
                                      Secs.  63.120(b)(2)(i)
                                      through (b)(4).
                                     --Primary seal gaps.......  Initially Once every 5      ...........................................................
                                                                  years (annually if no
                                                                  secondary seal).
                                     --Secondary seal gaps.....  Initially Semiannually....  ...........................................................
63.1256(b)(7)......................  Inspect wastewater tank     Initially Semiannually....  Visual.
63.1256(b)(8)......................   for control equipment
                                      failures and improper
                                      work practices.
SURFACE IMPOUNDMENTS:
    63.1256(c)(1)(i)...............  Inspect cover and all       Initially Semiannually....  Visual.
                                      openings for leaks.
    63.1256(c)(2)..................  Inspect surface             Initially Semiannually....  Visual.
                                      impoundment for control
                                      equipment failures and
                                      improper work practices.
CONTAINERS:
    63.1256(d)(1)(i)...............  Inspect cover and all       Initially Semiannually....  Visual.
    63.1256(d)(1)(ii)..............   openings for leaks.
    63.1256(d)(3)(i)...............  Inspect enclosure and all   Initially Semiannually....  Visual.
                                      openings for leaks.
    63.1256(d)(4)..................  Inspect container for       Initially Semiannually....  Visual.
                                      control equipment
                                      failures and improper
                                      work practices.
INDIVIDUAL DRAIN SYSTEMS a:
    63.1256(e)(1)(i)...............  Inspect cover and all       Initially Semiannually....  Visual.
                                      openings to ensure there
                                      are no gaps, cracks, or
                                      holes.
    63.1256(e)(2)..................  Inspect individual drain    Initially Semiannually....  Visual.
                                      system for control
                                      equipment failures and
                                      improper work practices.
    63.1256(e)(4)(i)...............  Verify that sufficient      Initially Semiannually....  Visual.
                                      water is present to
                                      properly maintain
                                      integrity of water seals.
    63.1256(e)(4)(ii)..............  Inspect all drains using    Initially Semiannually....  Visual.
    63.1256(e)(5)(i)...............   tightly-fitted caps or
                                      plugs to ensure caps and
                                      plugs are in place and
                                      properly installed.
    63.1256(e)(5)(ii)..............  Inspect all junction boxes  Initially Semiannually....  Visual or smoke test or other means as specified.
                                      to ensure covers are in
                                      place and have no visible
                                      gaps, cracks, or holes.
    63.1256(e)(5)(iii).............  Inspect unburied portion    Initially Semiannually....  Visual.
                                      of all sewer lines for
                                      cracks and gaps.
OIL-WATER SEPARATORS:

[[Page 111]]

 
    63.1256(f)(2)(i)...............  Inspect fixed roof and all  Initially Semiannually....  Visual.
                                      openings for leaks.
    63.1256(f)(3)..................  Measure floating roof seal  Initially b...............  See 40 CFR 60.696(d)(1).
                                      gaps in accordance with
                                      40 CFR 60.696(d)(1).
                                     --Primary seal gaps.......  Once every 5 years........  ...........................................................
    63.1256(f)(3)..................  --Secondary seal gaps.....  Initially b Annually.
    63.1256(f)(4)..................  Inspect oil-water           Initially Semiannually....  Visual.
                                      separator for control
                                      equipment failures and
                                      improper work practices.
--------------------------------------------------------------------------------------------------------------------------------------------------------
a As specified in Sec.  63.1256(e), the owner or operator shall comply with either the requirements of Sec.  63.1256(e)(1) and (2) or Sec.
  63.1256(e)(4) and (5).
b Within 60 days of installation as specified in Sec.  63.1256(f)(3).


[[Page 112]]


  Table 8 To Subpart GGG.--Fraction Measured (Fm) for HAP Compounds in
                           Wastewater Streams
------------------------------------------------------------------------
              Chemical name                  CAS No. a          Fm
------------------------------------------------------------------------
Acetaldehyde............................           75070         1.00
Acetonitrile............................           75058         0.99
Acetophenone............................           98862         0.31
Acrolein................................          107028         1.00
Acrylonitrile...........................          107131         1.00
Allyl chloride..........................          107051         1.00
Benzene.................................           71432         1.00
Benzyl chloride.........................          100447         1.00
Biphenyl................................           92524         0.86
Bromoform...............................           75252         1.00
Butadiene (1,3-)........................          106990         1.00
Carbon disulfide........................           75150         1.00
Carbon tetrachloride....................           56235         1.00
Chlorobenzene...........................          108907         0.96
Chloroform..............................           67663         1.00
Chloroprene (2-Chloro-1,3-butadiene)....          126998         1.00
Cumene..................................           98828         1.00
Dichlorobenzene (p-1,4-)................          106467         1.00
Dichloroethane (1,2-) (Ethylene                   107062         1.00
 dichloride)............................
Dichloroethylether (Bis(2-Chloroethyl             111444         0.76
 ether))................................
Dichloropropene (1,3-)..................          542756         1.00
Diethyl sulfate.........................           64675         0.0025
Dimethyl sulfate........................           77781         0.086
Dimethylaniline (N,N-)..................          121697         0.00080
Dimethylhydrazine (1,1-)................           57147         0.38
Dinitrophenol (2,4-)....................           51285         0.0077
Dinitrotoluene (2,4-)...................          121142         0.085
Dioxane (1,4-) (1,4-Diethyleneoxide)....          123911         0.87
Epichlorohydrin(1-Chloro-2,3-                     106898         0.94
 epoxypropane)..........................
Ethyl acrylate..........................          140885         1.00
Ethylbenzene............................          100414         1.00
Ethyl chloride (Chloroethane)...........           75003         1.00
Ethylene dibromide (Dibromomethane).....          106934         1.00
Ethylene glycol dimethyl ether..........          110714         0.86
Ethylene glycol monobutyl ether acetate.          112072         0.043
Ethylene glycol monomethyl ether acetate          110496         0.093
Ethylene oxide..........................           75218         1.00
Ethylidene dichloride (1,1-                        75343         1.00
 Dichloroethane)........................
Hexachlorobenzene.......................          118741         0.97
Hexachlorobutadiene.....................           87683         0.88
Hexachloroethane........................           67721         0.50
Hexane..................................          110543         1.00
Isophorone..............................           78591         0.47
Methanol................................           67561         0.85
Methyl bromide (Bromomethane)...........           74839         1.00
Methyl chloride (Chloromethane).........           74873         1.00
Methyl ethyl ketone (2-Butanone)........           78933         0.99
Methyl isobutyl ketone (Hexone).........          108101         0.98
Methyl methacrylate.....................           80626         1.00
Methyl tert-butyl ether.................         1634044         1.00
Methylene chloride (Dichloromethane)....           75092         1.00
Naphthalene.............................           91203         0.99
Nitrobenzene............................           98953         0.39
Nitropropane (2-).......................           79469         0.99
Phosgene................................           75445         1.00
Propionaldehyde.........................          123386         1.00
Propylene dichloride (1,2-                         78875         1.00
 Dichloropropane).......................
Propylene oxide.........................           75569         1.00
Styrene.................................          100425         1.00
Tetrachloroethane (1,1,2,2-)............           79345         1.00
Tetrachloroethylene (Perchloroethylene).          127184         1.00
Toluene.................................          108883         1.00
Toluidine (o-)..........................           95534         0.15
Trichlorobenzene (1,2,4-)...............          120821         1.00
Trichloroethane (1,1,1-) (Methyl                   71556         1.00
 chloroform)............................
Trichloroethane (1,1,2-) (Vinyl                    79005         0.98
 Trichloride)...........................
Trichloroethylene.......................           79016         1.00
Trichlorophenol (2,4,5-)................           95954         1.00
Triethylamine...........................          121448         1.00
Trimethylpentane (2,2,4-)...............          540841         1.00
Vinyl acetate...........................          108054         1.00

[[Page 113]]

 
Vinyl chloride (Chloroethylene).........           75014         1.00
Vinylidene chloride (1,1-                          75354         1.00
 Dichloroethylene)......................
Xylene (m-).............................          108383         1.00
Xylene (o-).............................           95476         1.00
Xylene (p-).............................          106423         1.00
------------------------------------------------------------------------
a CAS numbers refer to the Chemical Abstracts Service registry number
  assigned to specific compounds, isomers, or mixtures of compounds.


     Table 9 to Subpart GGG.--Default Biorates for List 1 Compounds
------------------------------------------------------------------------
                                                           Biorate (K1),
                      Compound name                        L/g MLVSS-hr
------------------------------------------------------------------------
Acetonitrile............................................           0.100
Acetophenone............................................           0.538
Diethyl sulfate.........................................           0.105
Dimethyl hydrazine(1,1).................................           0.227
Dimethyl sulfate........................................           0.178
Dinitrotoluene(2,4).....................................           0.784
Dioxane(1,4)............................................           0.393
Ethylene glycol dimethyl ether..........................           0.364
Ethylene glycol monomethyl ether acetate................           0.159
Ethylene glycol monobutyl ether acetate.................           0.496
Isophorone..............................................           0.598
Methanol................................................             (a)
Nitrobenzene............................................           2.300
Toluidine (-0)..........................................           0.859
------------------------------------------------------------------------
a For direct dischargers, the default biorate for methanol is 3.5 L/g
  MLVSS-hr; for indirect dischargers, the default biorate for methanol
  is 0.2 L/g MLVSS-hr.



 Subpart HHH--National Emission Standards for Hazardous Air Pollutants 
          From Natural Gas Transmission and Storage Facilities

    Source: 64 FR 32648, June 17, 1999, unless otherwise noted.



Sec. 63.1270  Applicability and designation of affected source.

    (a) This subpart applies to owners and operators of natural gas 
transmission and storage facilities that transport or store natural gas 
prior to entering the pipeline to a local distribution company or to a 
final end user (if there is no local distribution company), and that are 
major sources of hazardous air pollutants (HAP) emissions as determined 
using the maximum natural gas throughput calculated in either paragraph 
(a)(1) or (a)(2) of this section and paragraphs (a)(3) and (a)(4) of 
this section. A compressor station that transports natural gas prior to 
the point of custody transfer, or to a natural gas processing plant (if 
present) is considered a part of the oil and natural gas production 
source category. A facility that is determined to be an area source, 
based on emission estimates using the maximum natural gas throughput 
calculated as specified in paragraph (a)(1) or (a)(2) of this section, 
but subsequently increases emissions or potential to emit above the 
major source levels (without first obtaining and complying with other 
limitations that keep its potential to emit HAP below major source 
levels, becomes a major source and must comply thereafter with all 
applicable provisions of this subpart starting on the applicable 
compliance date specified in paragraph (d) of this section. Nothing in 
this paragraph is intended to preclude a source from limiting its 
potential to emit through other appropriate mechanisms that may be 
available through the permitting authority.
    (1) Facilities that store natural gas or facilities that transport 
and store natural gas shall determine major source status using the 
maximum annual facility natural gas throughput calculated according to 
paragraphs

[[Page 114]]

(a)(1)(i) through (a)(1)(iv) of this section.
    (i) The owner or operator shall determine the number of hours to 
complete the storage cycle for the facility. The storage cycle is the 
number of hours for the injection cycle, calculated according to the 
equation in paragraph (a)(1)(i)(A) of this section, plus the number of 
hours for the withdrawal cycle, calculated according to the equation in 
paragraph (a)(1)(i)(B) of this section.
    (A) The hours for the facility injection cycle are determined 
according to the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JN99.005

Where:

IC = Facility injection cycle in hours/cycle.
WGC = Working gas capacity in cubic meters. The working gas capacity is 
          defined as the maximum storage capacity minus the FERC cushion 
          (as defined in Sec. 63.1271).
IRmax = Maximum facility injection rate in cubic meters per 
          hour.

    (B) The hours for the facility withdrawal cycle are determined 
according to the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JN99.006

Where:

WC = Facility withdrawal cycle, hours/cycle.
WGC = Working gas capacity, cubic meters. The working gas capacity is 
          defined as the maximum storage capacity minus the FERC cushion 
          (as defined in Sec. 63.1271) and shall be the same value as 
          used in paragraph (a)(1)(i)(A) of this section.
WRmax = Maximum facility withdrawal rate in cubic meters per 
          hour.

    (ii) The owner or operator shall calculate the number of storage 
cycles for the facility per year according to the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JN99.007

Where:

Cycle = Number of storage cycles for the facility per year.
IC = Number of hours for a facility injection cycle, hours/cycle, as 
          calculated in paragraph (a)(1)(i)(A) of this section.
WC = Number of hours for a facility withdrawal cycle, hours/cycle, as 
          calculated in paragraph (a)(1)(i)(B) of this section.
    (iii) The owner or operator shall calculate the facilitywide maximum 
annual glycol dehydration unit hours of operation based on the following 
equation:

Operation = Cycles  x  WC

Where:

Operation = Facilitywide maximum annual glycol dehydration unit hours of 
          operation (hr/yr).
Cycles = Number of storage cycles for the facility per year, as 
          calculated in paragraph (a)(1)(ii) of this section.
WC = Number of hours for a facility withdrawal cycle, hours/cycle, as 
          calculated in paragraph (a)(1)(i)(B) of this section.

    (iv) The owner or operator shall calculate the maximum facilitywide 
natural gas throughput based on the following equation:

Throughput = Operation  x  WRmax

Where:

Throughput = Maximum facilitywide natural gas throughput in cubic meters 
          per year.
Operation = Maximum facilitywide annual glycol dehydration unit hours of 
          operation in hours per year, as calculated in paragraph 
          (a)(1)(iii) of this section.
WRmax = Maximum facility withdrawal rate in cubic meters per 
          hour.

    (2) Facilities that only transport natural gas shall calculate the 
maximum natural gas throughput as the highest annual natural gas 
throughput over the 5 years prior to June 17, 1999, multiplied by a 
factor of 1.2.
    (3) The owner or operator shall maintain records of the annual 
facility natural gas throughput each year and upon request, submit such 
records to the Administrator. If the facility annual natural gas 
throughput increases above the maximum natural gas throughput calculated 
in paragraph (a)(1) or (a)(2) of this section, the maximum natural gas 
throughput must be recalculated using the higher throughput multiplied 
by a factor of 1.2.
    (4) The owner or operator shall determine the maximum values for 
other parameters used to calculate potential emissions as the maximum 
over the same period for which maximum throughput is determined as 
specified in paragraph (a)(1) or (a)(2) of this section. These 
parameters shall be based

[[Page 115]]

on an annual average or the highest single measured value.
    (b) The affected source is each glycol dehydration unit.
    (c) The owner or operator of a facility that does not contain an 
affected source, as specified in paragraph (b) of this section, is not 
subject to the requirements of this subpart.
    (d) The owner or operator of each affected source shall achieve 
compliance with the provisions of this subpart by the following dates:
    (1) The owner or operator of an affected source, the construction or 
reconstruction of which commenced before February 6, 1998, shall achieve 
compliance with this provisions of the subpart no later than June 17, 
2002 except as provided for in Sec. 63.6(i). The owner or operator of an 
area source, the construction or reconstruction of which commenced 
before February 6, 1998, that increases its emissions of (or its 
potential to emit) HAP such that the source becomes a major source that 
is subject to this subpart shall comply with this subpart 3 years after 
becoming a major source.
    (2) The owner or operator of an affected source, the construction or 
reconstruction of which commences on or after February 6, 1998, shall 
achieve compliance with the provisions of this subpart immediately upon 
initial startup or June 17, 1999, whichever date is later. Area sources, 
the construction or reconstruction of which commences on or after 
February 6, 1998, that become major sources shall comply with the 
provisions of this standard immediately upon becoming a major source.
    (e) An owner or operator of an affected source that is a major 
source or is located at a major source and is subject to the provisions 
of this subpart is also subject to 40 CFR part 70 or part 71 permitting 
requirements.
    (f) Exemptions. A facility with a facilitywide actual annual average 
natural gas throughput less than 28.3 thousand standard cubic meters per 
day, where glycol dehydration units are the only HAP emission source, is 
not subject to the requirements of this subpart. Records shall be 
maintained as required in Sec. 63.10(b)(3).



Sec. 63.1271  Definitions.

    All terms used in this subpart shall have the meaning given to them 
in the Clean Air Act, subpart A of this part (General Provisions), and 
in this section. If the same term is defined in subpart A and in this 
section, it shall have the meaning given in this section for purposes of 
this subpart.
    Boiler means an enclosed device using controlled flame combustion 
and having the primary purpose of recovering and exporting thermal 
energy in the form of steam or hot water. Boiler also means any 
industrial furnace as defined in 40 CFR 260.10.
    Closed-vent system means a system that is not open to the atmosphere 
and is composed of piping, ductwork, connections, and if necessary, flow 
inducing devices that transport gas or vapor from an emission point to 
one or more control devices. If gas or vapor from regulated equipment is 
routed to a process (e.g., to a fuel gas system), the conveyance system 
shall not be considered a closed-vent system and is not subject to 
closed-vent system standards.
    Combustion device means an individual unit of equipment, such as a 
flare, incinerator, process heater, or boiler, used for the combustion 
of organic HAP emissions.
    Compressor station means any permanent combination of compressors 
that move natural gas at increased pressure from fields, in transmission 
pipelines, or into storage.
    Continuous recorder means a data recording device that either 
records an instantaneous data value at least once every hour or records 
hourly or more frequent block average values.
    Control device means any equipment used for recovering or oxidizing 
HAP or volatile organic compounds (VOC) vapors. Such equipment includes, 
but is not limited to, absorbers, carbon adsorbers, condensers, 
incinerators, flares, boilers, and process heaters. For the purposes of 
this subpart, if gas or vapor from regulated equipment is used, reused 
(i.e., injected into the flame zone of a combustion device), returned 
back to the process, or sold,

[[Page 116]]

then the recovery system used, including piping, connections, and flow 
inducing devices, is not considered to be control devices or closed-vent 
systems.
    Custody transfer means the transfer of hydrocarbon liquids or 
natural gas:
    (1) After processing and/or treatment in the producing operations; 
or
    (2) From storage vessels or automatic transfer facilities, or other 
equipment, including product loading racks, to pipelines or any other 
forms of transportation.
    Facility means any grouping of equipment where natural gas is 
processed, compressed, or stored prior to entering a pipeline to a local 
distribution company or (if there is no local distribution company) to a 
final end user. Examples of a facility for this source category are: an 
underground natural gas storage operation; or a natural gas compressor 
station that receives natural gas via pipeline, from an underground 
natural gas storage operation, or from a natural gas processing plant. 
The emission points associated with these phases include, but are not 
limited to, process vents. Processes that may have vents include, but 
are not limited to, dehydration and compressor station engines.
    Facility, for the purpose of a major source determination, means 
natural gas transmission and storage equipment that is located inside 
the boundaries of an individual surface site (as defined in this 
section) and is connected by ancillary equipment, such as gas flow lines 
or power lines. Equipment that is part of a facility will typically be 
located within close proximity to other equipment located at the same 
facility. Natural gas transmission and storage equipment or groupings of 
equipment located on different gas leases, mineral fee tracts, lease 
tracts, subsurface unit areas, surface fee tracts, or surface lease 
tracts shall not be considered part of the same facility.
    Federal Energy Regulatory Commission Cushion or FERC Cushion means 
the minimum natural gas capacity of a storage field as determined by the 
Federal Energy Regulatory Commission.
    Flame zone means the portion of the combustion chamber in a 
combustion device occupied by the flame envelope.
    Flash tank. See the definition for gas-condensate-glycol (GCG) 
separator.
    Flow indicator means a device which indicates whether gas flow is 
present in a line or whether the valve position would allow gas flow to 
be present in a line.
    Gas-condensate-glycol (GCG) separator means a two-or three-phase 
separator through which the ``rich'' glycol stream of a glycol 
dehydration unit is passed to remove entrained gas and hydrocarbon 
liquid. The GCG separator is commonly referred to as a flash separator 
or flash tank.
    Glycol dehydration unit means a device in which a liquid glycol 
(including, but not limited to, ethylene glycol, diethylene glycol, or 
triethylene glycol) absorbent directly contacts a natural gas stream and 
absorbs water in a contact tower or absorption column (absorber). The 
glycol contacts and absorbs water vapor and other gas stream 
constituents from the natural gas and becomes ``rich'' glycol. This 
glycol is then regenerated in the glycol dehydration unit reboiler. The 
``lean'' glycol is then recycled.
    Glycol dehydration unit baseline operations means operations 
representative of the glycol dehydration unit operations as of June 17, 
1999. For the purposes of this subpart, for determining the percentage 
of overall HAP emission reduction attributable to process modifications, 
glycol dehydration unit baseline operations shall be parameter values 
(including, but not limited to, glycol circulation rate or glycol-HAP 
absorbency) that represent actual long-term conditions (i.e., at least 1 
year). Glycol dehydration units in operation for less than 1 year shall 
document that the parameter values represent expected long-term 
operating conditions had process modifications not been made.
    Glycol dehydration unit process vent means either the glycol 
dehydration unit reboiler vent and the vent from the GCG separator 
(flash tank), if present.
    Glycol dehydration unit reboiler vent means the vent through which 
exhaust from the reboiler of a glycol dehydration unit passes from the 
reboiler to the atmosphere or to a control device.

[[Page 117]]

    Hazardous air pollutants or HAP means the chemical compounds listed 
in section 112(b) of the Clean Air Act (Act). All chemical compounds 
listed in section 112(b) of the Act need to be considered when making a 
major source determination. Only the HAP compounds listed in Table 1 of 
this subpart need to be considered when determining compliance.
    Incinerator means an enclosed combustion device that is used for 
destroying organic compounds. Auxiliary fuel may be used to heat waste 
gas to combustion temperatures. Any energy recovery section is not 
physically formed into one manufactured or assembled unit with the 
combustion section; rather, the energy recovery section is a separate 
section following the combustion section and the two are joined by ducts 
or connections carrying flue gas. The above energy recovery section 
limitation does not apply to an energy recovery section used solely to 
preheat the incoming vent stream or combustion air.
    Initial startup means the first time a new or reconstructed source 
begins production. For the purposes of this subpart, initial startup 
does not include subsequent startups (as defined in this section) of 
equipment, for example, following malfunctions or shutdowns.
    Major source, as used in this subpart, shall have the same meaning 
as in Sec. 63.2, except that:
    (1) Emissions from any pipeline compressor station or pump station 
shall not be aggregated with emissions from other similar units, whether 
or not such units are in a contiguous area or under common control; and
    (2) Emissions from processes, operations, and equipment that are not 
part of the same facility, as defined in this section, shall not be 
aggregated.
    Natural gas means a naturally occurring mixture of hydrocarbon and 
nonhydrocarbon gases found in geologic formations beneath the earth's 
surface. The principal hydrocarbon constituent is methane.
    Natural gas transmission means the pipelines used for the long 
distance transport of natural gas (excluding processing). Specific 
equipment used in natural gas transmission includes the land, mains, 
valves, meters, boosters, regulators, storage vessels, dehydrators, 
compressors, and their driving units and appurtenances, and equipment 
used for transporting gas from a production plant, delivery point of 
purchased gas, gathering system, storage area, or other wholesale source 
of gas to one or more distribution area(s).
    No detectable emissions means no escape of HAP from a device or 
system to the atmosphere as determined by:
    (1) Instrument monitoring results in accordance with the 
requirements of Sec. 63.1282(b); and
    (2) The absence of visible openings or defects in the device or 
system, such as rips, tears, or gaps.
    Operating parameter value means a minimum or maximum value 
established for a control device or process parameter which, if achieved 
by itself or in combination with one or more other operating parameter 
values, indicates that an owner or operator has complied with an 
applicable operating parameter limitation, over the appropriate 
averaging period as specified in Sec. 63.1282 (e) and (f).
    Operating permit means a permit required by 40 CFR part 70 or part 
71.
    Organic monitoring device means an instrument used to indicate the 
concentration level of organic compounds exiting a control device based 
on a detection principle such as infra-red, photoionization, or thermal 
conductivity.
    Primary fuel means the fuel that provides the principal heat input 
(i.e., more than 50 percent) to the device. To be considered primary, 
the fuel must be able to sustain operation without the addition of other 
fuels.
    Process heater means an enclosed device using a controlled flame, 
the primary purpose of which is to transfer heat to a process fluid or 
process material that is not a fluid, or to a heat transfer material for 
use in a process (rather than for steam generation) .
    Safety device means a device that meets both of the following 
conditions: the device is not used for planned or routine venting of 
liquids, gases, or fumes from the unit or equipment on which the device 
is installed; and the

[[Page 118]]

device remains in a closed, sealed position at all times except when an 
unplanned event requires that the device open for the purpose of 
preventing physical damage or permanent deformation of the unit or 
equipment on which the device is installed in accordance with good 
engineering and safety practices for handling flammable, combustible, 
explosive, or other hazardous materials. Examples of unplanned events 
which may require a safety device to open include failure of an 
essential equipment component or a sudden power outage.
    Shutdown means for purposes including, but not limited to, periodic 
maintenance, replacement of equipment, or repair, the cessation of 
operation of a glycol dehydration unit, or other affected source under 
this subpart, or equipment required or used solely to comply with this 
subpart.
    Startup means the setting into operation of a glycol dehydration 
unit, or other affected equipment under this subpart, or equipment 
required or used to comply with this subpart. Startup includes initial 
startup and operation solely for the purpose of testing equipment.
    Storage vessel means a tank or other vessel that is designed to 
contain an accumulation of crude oil, condensate, intermediate 
hydrocarbon liquids, produced water, or other liquid, and is constructed 
primarily of non-earthen materials (e.g., wood, concrete, steel, 
plastic) that provide structural support.
    Surface site means any combination of one or more graded pad sites, 
gravel pad sites, foundations, platforms, or the immediate physical 
location upon which equipment is physically affixed.
    Temperature monitoring device means an instrument used to monitor 
temperature and having a minimum accuracy of 2 percent of 
the temperature being monitored expressed in  deg.C, or 2.5 
deg.C, whichever is greater. The temperature monitoring device may 
measure temperature in degrees Fahrenheit or degrees Celsius, or both.
    Total organic compounds or TOC, as used in this subpart, means those 
compounds which can be measured according to the procedures of Method 
18, 40 CFR part 60, appendix A.
    Underground storage means the subsurface facilities utilized for 
storing natural gas that has been transferred from its original location 
for the primary purpose of load balancing, which is the process of 
equalizing the receipt and delivery of natural gas. Processes and 
operations that may be located at an underground storage facility 
include, but are not limited to, compression and dehydration.



Sec. 63.1272  Startups, shutdowns, and malfunctions.

    (a) The provisions set forth in this subpart shall apply at all 
times except during startups or shutdowns, during malfunctions, and 
during periods of non-operation of the affected sources (or specific 
portion thereof) resulting in cessation of the emissions to which this 
subpart applies. However, during the startup, shutdown, malfunction, or 
period of non-operation of one portion of an affected source, all 
emission points which can comply with the specific provisions to which 
they are subject must do so during the startup, shutdown, malfunction, 
or period of non-operation.
    (b) The owner or operator shall not shut down items of equipment 
that are required or utilized for compliance with the provisions of this 
subpart during times when emissions are being routed to such items of 
equipment, if the shutdown would contravene requirements of this subpart 
applicable to such items of equipment. This paragraph does not apply if 
the item of equipment is malfunctioning, or if the owner or operator 
must shut down the equipment to avoid damage due to a contemporaneous 
startup, shutdown, or malfunction of the affected source or a portion 
thereof.
    (c) During startups, shutdowns, and malfunctions when the 
requirements of this subpart do not apply pursuant to paragraphs (a) and 
(b) of this section, the owner or operator shall implement, to the 
extent reasonably available, measures to prevent or minimize excess 
emissions to the maximum extent practical. For purposes of this 
paragraph, the term ``excess emissions'' means emissions in excess of 
those that would have occurred if there were no startup, shutdown, or 
malfunction, and

[[Page 119]]

the owner or operator complied with the relevant provisions of this 
subpart. The measures to be taken shall be identified in the applicable 
startup, shutdown, and malfunction plan, and may include, but are not 
limited to, air pollution control technologies, recovery technologies, 
work practices, pollution prevention, monitoring, and/or changes in the 
manner of operation of the source. Back-up control devices are not 
required, but may be used if available.
    (d) The owner or operator shall prepare a startup, shutdown, or 
malfunction plan as required in Sec. 63.6(e)(3) except that the plan is 
not required to be incorporated by reference into the source's title V 
permit as specified in Sec. 63.6(e)(3)(i). Instead, the owner or 
operator shall keep the plan on record as required by 
Sec. 63.6(e)(3)(v). The failure of the plan to adequately minimize 
emissions during the startup, shutdown, or malfunction does not shield 
an owner or operator from enforcement actions.



Sec. 63.1273  [Reserved]



Sec. 63.1274  General standards.

    (a) Table 2 of this subpart specifies the provisions of subpart A 
(General Provisions) that apply and those that do not apply to owners 
and operators of affected sources subject to this subpart.
    (b) All reports required under this subpart shall be sent to the 
Administrator at the appropriate address listed in Sec. 63.13. Reports 
may be submitted on electronic media.
    (c) Except as specified in paragraph (d) of this section, the owner 
or operator of an affected source (i.e., glycol dehydration unit) 
located at an existing or new major source of HAP emissions shall comply 
with the requirements in this subpart as follows:
    (1) The control requirements for glycol dehydration unit process 
vents specified in Sec. 63.1275;
    (2) The monitoring requirements specified in Sec. 63.1283, and
    (3) The recordkeeping and reporting requirements specified in 
Secs. 63.1284 and 63.1285.
    (d) Exemptions. The owner or operator is exempt from the 
requirements of paragraph (c) of this section if the criteria listed in 
paragraph (d)(1) or (d)(2) of this section are met. Records of the 
determination of these criteria must be maintained as required in 
Sec. 63.1284(d) of this subpart.
    (1) The actual annual average flow of gas to the glycol dehydration 
unit is less than 283 thousand standard cubic meters per day, as 
determined by the procedures specified in Sec. 63.1282(a)(1) of this 
subpart; or
    (2) The actual average emissions of benzene from the glycol 
dehydration unit process vents to the atmosphere are less than 0.90 
megagram per year as determined by the procedures specified in 
Sec. 63.1282(a)(2) of this subpart.
    (e) Each owner or operator of a major HAP source subject to this 
subpart is required to apply for a part 70 or part 71 operating permit 
from the appropriate permitting authority. If the Administrator has 
approved a State operating permit program under part 70, the permit 
shall be obtained from the State authority. If a State operating permit 
program has not been approved, the owner or operator shall apply to the 
EPA Regional Office pursuant to part 71.
    (f) [Reserved]
    (g) In all cases where the provisions of this subpart require an 
owner or operator to repair leaks by a specified time after the leak is 
detected, it is a violation of this standard to fail to take action to 
repair the leak(s) within the specified time. If action is taken to 
repair the leak(s) within the specified time, failure of that action to 
successfully repair the leak(s) is not a violation of this standard. 
However, if the repairs are unsuccessful, a leak is detected and the 
owner or operator shall take further action as required by the 
applicable provisions of this subpart.



Sec. 63.1275  Glycol dehydration unit process vent standards.

    (a) This section applies to each glycol dehydration unit, subject to 
this subpart, with an actual annual average natural gas flowrate equal 
to or greater than 283 thousand standard cubic meters per day and with 
actual average benzene glycol dehydration unit process vent emissions 
equal to or greater than 0.90 megagrams per year.
    (b) Except as provided in paragraph (c) of this section, an owner or 
operator

[[Page 120]]

of a glycol dehydration unit process vent shall comply with the 
requirements specified in paragraphs (b)(1) and (b)(2) of this section.
    (1) For each glycol dehydration unit process vent, the owner or 
operator shall control air emissions by either paragraph (b)(1)(i) or 
(b)(1)(ii) of this section.
    (i) The owner or operator shall connect the process vent to a 
control device or a combination of control devices through a closed-vent 
system. The closed-vent system shall be designed and operated in 
accordance with the requirements of Sec. 63.1281(c). The control 
device(s) shall be designed and operated in accordance with the 
requirements of Sec. 63.1281(d).
    (ii) The owner or operator shall connect the process vent to a 
control device or a combination of control devices through a closed-vent 
system and the outlet benzene emissions from the control device(s) shall 
be less than 0.90 megagrams per year. The closed-vent system shall be 
designed and operated in accordance with the requirements of 
Sec. 63.1281(c). The control device(s) shall be designed and operated in 
accordance with the requirements of Sec. 63.1281(d), except that the 
performance requirements specified in Sec. 63.1281(d)(1)(i) and (ii) do 
not apply.
    (2) One or more safety devices that vent directly to the atmosphere 
may be used on the air emission control equipment installed to comply 
with paragraph (b)(1) of this section.
    (c) As an alternative to the requirements of paragraph (b) of this 
section, the owner or operator may comply with one of the following:
    (1) The owner or operator shall control air emissions by connecting 
the process vent to a process natural gas line.
    (2) The owner or operator shall demonstrate, to the Administrator's 
satisfaction, that the total HAP emissions to the atmosphere from the 
glycol dehydration unit process vent are reduced by 95.0 percent through 
process modifications or a combination of process modifications and one 
or more control devices, in accordance with the requirements specified 
in Sec. 63.1281(e).
    (3) Control of HAP emissions from a GCG separator (flash tank) vent 
is not required if the owner or operator demonstrates, to the 
Administrator's satisfaction, that total emissions to the atmosphere 
from the glycol dehydration unit process vent are reduced by one of the 
levels specified in paragraphs (c)(3)(i) through (c)(3)(ii), through the 
installation and operation of controls as specified in paragraph (b) (1) 
of this section.
    (i) HAP emissions are reduced by 95.0 percent or more.
    (ii) Benzene emissions are reduced to a level less than 0.90 
megagrams per year.



Secs. 63.1276-63.1280  [Reserved]



Sec. 63.1281  Control equipment requirements.

    (a) This section applies to each closed-vent system and control 
device installed and operated by the owner or operator to control air 
emissions as required by the provisions of this subpart. Compliance with 
paragraphs (c) and (d) of this section will be determined by review of 
the records required by Sec. 63.1284, the reports required by 
Sec. 63.1285, by review of performance test results, and by inspections.
    (b) [Reserved]
    (c) Closed-vent system requirements. (1) The closed-vent system 
shall route all gases, vapors, and fumes emitted from the material in a 
HAP emissions unit to a control device that meets the requirements 
specified in paragraph (d) of this section.
    (2) The closed-vent system shall be designed and operated with no 
detectable emissions.
    (3) If the closed-vent system contains one or more bypass devices 
that could be used to divert all or a portion of the gases, vapors, or 
fumes from entering the control device, the owner or operator shall meet 
the requirements specified in paragraphs (c)(3)(i) and (c)(3)(ii) of 
this section.
    (i) For each bypass device, except as provided for in paragraph 
(c)(3)(ii) of this section, the owner or operator shall either:
    (A) Properly install, calibrate, maintain, and operate a flow 
indicator at the inlet to the bypass device that could divert the stream 
away from the control device to the atmosphere that

[[Page 121]]

takes a reading at least once every 15 minutes, and that sounds an alarm 
when the bypass device is open such that the stream is being, or could 
be, diverted away from the control device to the atmosphere; or
    (B) Secure the bypass device valve installed at the inlet to the 
bypass device in the non-diverting position using a car-seal or a lock-
and-key type configuration. The owner or operator shall visually inspect 
the seal or closure mechanism at least once every month to verify that 
the valve is maintained in the non-diverting position and the vent 
stream is not diverted through the bypass device.
    (ii) Low leg drains, high point bleeds, analyzer vents, open-ended 
valves or lines, and safety devices are not subject to the requirements 
of paragraph (c)(3)(i) of this section.
    (d) Control device requirements. (1) The control device used to 
reduce HAP emissions in accordance with the standards of this subpart 
shall be one of the control devices specified in paragraphs (d)(1)(i) 
through (iii) of this section.
    (i) An enclosed combustion device (e.g., thermal vapor incinerator, 
catalytic vapor incinerator, boiler, or process heater) that is designed 
and operated in accordance with one of the following performance 
requirements:
    (A) Reduces the mass content of either TOC or total HAP in the gases 
vented to the device by 95.0 percent by weight or greater, as determined 
in accordance with the requirements of Sec. 63.1282(d);
    (B) Reduces the concentration of either TOC or total HAP in the 
exhaust gases at the outlet to the device to a level equal to or less 
than 20 parts per million by volume on a dry basis corrected to 3 
percent oxygen as determined in accordance with the requirements of 
Sec. 63.1282(d); or
    (C) Operates at a minimum residence time of 0.5 second at a minimum 
temperature of 760  deg.C.
    (D) If a boiler or process heater is used as the control device, 
then the vent stream shall be introduced into the flame zone of the 
boiler or process heater.
    (ii) A vapor recovery device (e.g., carbon adsorption system or 
condenser) or other control device that is designed and operated to 
reduce the mass content of either TOC or total HAP in the gases vented 
to the device by 95.0 percent by weight or greater as determined in 
accordance with the requirements of Sec. 63.1282(d).
    (iii) A flare that is designed and operated in accordance with the 
requirements of Sec. 63.11(b).
    (2) [Reserved]
    (3) The owner or operator shall demonstrate that a control device 
achieves the performance requirements of paragraph (d)(1) of this 
section by following the procedures specified in Sec. 63.1282(d).
    (4) The owner or operator shall operate each control device in 
accordance with the requirements specified in paragraphs (d)(4)(i) and 
(ii) of this section.
    (i) Each control device used to comply with this subpart shall be 
operating at all times when gases, vapors, and fumes are vented from the 
emissions unit or units through the closed-vent system to the control 
device, as required under Sec. 63.1275, except when maintenance or 
repair of a unit cannot be completed without a shutdown of the control 
device. An owner or operator may vent more than one unit to a control 
device used to comply with this subpart.
    (ii) For each control device monitored in accordance with the 
requirements of Sec. 63.1283(d), the owner or operator shall demonstrate 
compliance according to the requirements of Sec. 63.1282(e), or (f) as 
applicable.
    (5) For each carbon adsorption system used as a control device to 
meet the requirements of paragraph (d)(1) of this section, the owner or 
operator shall manage the carbon as follows:
    (i) Following the initial startup of the control device, all carbon 
in the control device shall be replaced with fresh carbon on a regular, 
predetermined time interval that is no longer than the carbon service 
life established for the carbon adsorption system.
    (ii) The spent carbon removed from the carbon adsorption system 
shall be either regenerated, reactivated, or burned in one of the units 
specified in paragraphs (d)(5)(ii)(A) through (d)(5)(ii)(G) of this 
section.

[[Page 122]]

    (A) Regenerated or reactivated in a thermal treatment unit for which 
the owner or operator has been issued a final permit under 40 CFR part 
270 that implements the requirements of 40 CFR part 264, subpart X.
    (B) Regenerated or reactivated in a thermal treatment unit equipped 
with and operating organic air emission controls in accordance with this 
section.
    (C) Regenerated or reactivated in a thermal treatment unit equipped 
with and operating organic air emission controls in accordance with a 
national emissions standard for HAP under another subpart in 40 CFR part 
61 or this part.
    (D) Burned in a hazardous waste incinerator for which the owner or 
operator has been issued a final permit under 40 CFR part 270 that 
implements the requirements of 40 CFR part 264, subpart O.
    (E) Burned in a hazardous waste incinerator which the owner or 
operator has designed and operates in accordance with the requirements 
of 40 CFR part 265, subpart O.
    (F) Burned in a boiler or industrial furnace for which the owner or 
operator has been issued a final permit under 40 CFR part 270 that 
implements the requirements of 40 CFR part 266, subpart H.
    (G) Burned in a boiler or industrial furnace which the owner or 
operator has designed and operates in accordance with the interim status 
requirements of 40 CFR part 266, subpart H.
    (e) Process modification requirements. Each owner or operator that 
chooses to comply with Sec. 63.1275(c)(2) shall meet the requirements 
specified in paragraphs (e)(1) through (e)(3) of this section.
    (1) The owner or operator shall determine glycol dehydration unit 
baseline operations (as defined in Sec. 63.1271). Records of glycol 
dehydration unit baseline operations shall be retained as required under 
Sec. 63.1284(b)(9).
    (2) The owner or operator shall document, to the Administrator's 
satisfaction, the conditions for which glycol dehydration unit baseline 
operations shall be modified to achieve the 95.0 percent overall HAP 
emission reduction, either through process modifications or through a 
combination of process modifications and one or more control devices. If 
a combination of process modifications and one or more control devices 
are used, the owner or operator shall also establish the percent HAP 
reduction to be achieved by the control device to achieve an overall HAP 
emission reduction of 95.0 percent for the glycol dehydration unit 
process vent. Only modifications in glycol dehydration unit operations 
directly related to process changes, including, but not limited to, 
changes in glycol circulation rate or glycol-HAP absorbency, shall be 
allowed. Changes in the inlet gas characteristics or natural gas 
throughput rate shall not be considered in determining the overall HAP 
emission reduction.
    (3) The owner or operator that achieves a 95.0 percent HAP emission 
reduction using process modifications alone shall comply with paragraph 
(e)(3)(i) of this section. The owner or operator that achieves a 95.0 
percent HAP emission reduction using a combination of process 
modifications and one or more control devices shall comply with 
paragraphs (e)(3)(i) and (e)(3)(ii) of this section.
    (i) The owner or operator shall maintain records, as required in 
Sec. 63.1284(b)(10), that the facility continues to operate in 
accordance with the conditions specified under paragraph (e)(2) of this 
section.
    (ii) The owner or operator shall comply with the control device 
requirements specified in paragraph (d) of this section, except that the 
emission reduction achieved shall be the emission reduction specified in 
paragraph (e)(2) of this section.



Sec. 63.1282  Test methods, compliance procedures, and compliance demonstrations.

    (a) Determination of glycol dehydration unit flowrate or benzene 
emissions. The procedures of this paragraph shall be used by an owner or 
operator to determine glycol dehydration unit natural gas flowrate or 
benzene emissions to meet the criteria for the exemption from control 
requirements under Sec. 63.1274(d).
    (1) The determination of actual flowrate of natural gas to a glycol 
dehydration unit shall be made using the

[[Page 123]]

procedures of either paragraph (a)(1)(i) or (a)(1)(ii) of this section.
    (i) The owner or operator shall install and operate a monitoring 
instrument that directly measures natural gas flowrate to the glycol 
dehydration unit with an accuracy of plus or minus 2 percent or better. 
The owner or operator shall convert the annual natural gas flowrate to a 
daily average by dividing the annual flowrate by the number of days per 
year the glycol dehydration unit processed natural gas.
    (ii) The owner or operator shall document, to the Administrator's 
satisfaction, that the actual annual average natural gas flowrate to the 
glycol dehydration unit is less than 85 thousand standard cubic meters 
per day.
    (2) The determination of actual average benzene emissions from a 
glycol dehydration unit shall be made using the procedures of either 
paragraph (a)(2)(i) or (a)(2)(ii) of this section. Emissions shall be 
determined either uncontrolled or with federally enforceable controls in 
place.
    (i) The owner or operator shall determine actual average benzene 
emissions using the model GRI-GLYCalcTM, Version 3.0 or 
higher, and the procedures presented in the associated GRI-
GLYCalcTM Technical Reference Manual. Inputs to the model 
shall be representative of actual operating conditions of the glycol 
dehydration unit and may be determined using the procedures documented 
in the Gas Research Institute (GRI) report entitled ``Atmospheric Rich/
Lean Method for Determining Glycol Dehydrator Emissions'' (GRI-95/
0368.1); or
    (ii) The owner or operator shall determine an average mass rate of 
benzene emissions in kilograms per hour through direct measurement by 
performing three runs of Method 18 in 40 CFR part 60, appendix A (or an 
equivalent method), and averaging the results of the three runs. Annual 
emissions in kilograms per year shall be determined by multiplying the 
mass rate by the number of hours the unit is operated per year. This 
result shall be converted to megagrams per year.
    (b) No detectable emissions test procedure. (1) The procedure shall 
be conducted in accordance with Method 21, 40 CFR part 60, appendix A.
    (2) The detection instrument shall meet the performance criteria of 
Method 21, 40 CFR part 60, appendix A, except the instrument response 
factor criteria in section 3.1.2(a) of Method 21 shall be for the 
average composition of the fluid, and not for each individual organic 
compound in the stream.
    (3) The detection instrument shall be calibrated before use on each 
day of its use by the procedures specified in Method 21, 40 CFR part 60, 
appendix A.
    (4) Calibration gases shall be as follows:
    (i) Zero air (less than 10 parts per million by volume hydrocarbon 
in air); and
    (ii) A mixture of methane in air at a methane concentration of less 
than 10,000 parts per million by volume.
    (5) An owner or operator may choose to adjust or not adjust the 
detection instrument readings to account for the background organic 
concentration level. If an owner or operator chooses to adjust the 
instrument readings for the background level, the background level value 
must be determined according to the procedures in Method 21 of 40 CFR 
part 60, appendix A.
    (6)(i) Except as provided in paragraph (b)(6)(i) of this section, 
the detection instrument shall meet the performance criteria of Method 
21 of 40 CFR part 60, appendix A, except the instrument response factor 
criteria in section 3.1.2(a) of Method 21 shall be for the average 
composition of the process fluid not each individual volatile organic 
compound in the stream. For process streams that contain nitrogen, air, 
or other inerts which are not organic hazardous air pollutants or 
volatile organic compounds, the average stream response factor shall be 
calculated on an inert-free basis.
    (ii) If no instrument is available at the facility that will meet 
the performance criteria specified in paragraph (b)(6)(i) of this 
section, the instrument readings may be adjusted by multiplying by the 
average response factor of the process fluid, calculated on an inert-
free basis as described in paragraph (b)(6)(i) of this section.
    (7) An owner or operator must determine if a potential leak 
interface operates with no detectable emissions using the applicable 
procedure specified in

[[Page 124]]

paragraph (b)(7)(i) or (b)(7)(ii) of this section.
    (i) If an owner or operator chooses not to adjust the detection 
instrument readings for the background organic concentration level, then 
the maximum organic concentration value measured by the detection 
instrument is compared directly to the applicable value for the 
potential leak interface as specified in paragraph (b)(8) of this 
section.
    (ii) If an owner or operator chooses to adjust the detection 
instrument readings for the background organic concentration level, the 
value of the arithmetic difference between the maximum organic 
concentration value measured by the instrument and the background 
organic concentration value as determined in paragraph (b)(5) of this 
section is compared with the applicable value for the potential leak 
interface as specified in paragraph (b)(8) of this section.
    (8) A potential leak interface is determined to operate with no 
detectable organic emissions if the organic concentration value 
determined in paragraph (b)(7) is less than 500 parts per million by 
volume.
    (c) [Reserved]
    (d) Control device performance test procedures. This paragraph 
applies to the performance testing of control devices. The owners or 
operators shall demonstrate that a control device achieves the 
performance requirements of Sec. 63.1281(d)(1) or (e)(3)(ii) using 
either a performance test as specified in paragraph (d)(3) of this 
section or a design analysis as specified in paragraph (d)(4) of this 
section. The owner or operator may elect to use the alternative 
procedures in paragraph (d)(5) of this section for performance testing 
of a condenser used to control emissions from a glycol dehydration unit 
process vent.
    (1) The following control devices are exempt from the requirements 
to conduct performance tests and design analyses under this section:
    (i) A flare that is designed and operated in accordance with 
Sec. 63.11(b);
    (ii) A boiler or process heater with a design heat input capacity of 
44 megawatts or greater;
    (iii) A boiler or process heater into which the vent stream is 
introduced with the primary fuel or is used as the primary fuel;
    (iv) A boiler or process heater burning hazardous waste for which 
the owner or operator has either been issued a final permit under 40 CFR 
part 270 and complies with the requirements of 40 CFR part 266, subpart 
H, or has certified compliance with the interim status requirements of 
40 CFR part 266, subpart H;
    (v) A hazardous waste incinerator for which the owner or operator 
has been issued a final permit under 40 CFR part 270 and complies with 
the requirements of 40 CFR part 264, subpart O, or has certified 
compliance with the interim status requirements of 40 CFR part 265, 
subpart O.
    (vi) A control device for which a performance test was conducted for 
determining compliance with a regulation promulgated by the EPA, and the 
test was conducted using the same methods specified in this section, and 
either no process changes have been made since the test, or the owner or 
operator can demonstrate that the results of the performance test, with 
or without adjustments, reliably demonstrate compliance despite process 
changes.
    (2) An owner or operator shall design and operate each flare in 
accordance with the requirements specified in Sec. 63.11(b) and in 
paragraphs (d)(2)(i) and (d)(2)(ii) of this section.
    (i) The compliance determination shall be conducted using Method 22 
of 40 CFR part 60, appendix A, to determine visible emissions.
    (ii) An owner or operator is not required to conduct a performance 
test to determine percent emission reduction or outlet organic HAP or 
TOC concentration when a flare is used.
    (3) For a performance test conducted to demonstrate that a control 
device meets the requirements of Sec. 63.1281(d)(1) or (e)(3)(ii), the 
owner or operator shall use the test methods and procedures specified in 
paragraphs (d)(3)(i) through (d)(3)(iv) of this section. The performance 
test shall be conducted according to the schedule specified in 
Sec. 63.7(a)(2), and the results of the performance test shall be 
submitted in the Notification of Compliance Status Report as required in 
Sec. 63.1285(d)(1)(ii).

[[Page 125]]

    (i) Method 1 or 1A, 40 CFR part 60, appendix A, as appropriate, 
shall be used for selection of the sampling sites specified in 
paragraphs (d)(3)(i)(A) and (B) of this section. Any references to 
particulate mentioned in Methods 1 and 1A do not apply to this section.
    (A) To determine compliance with the control device percent 
reduction requirements specified in Sec. 63.1281(d)(1)(i)(A),(d)(1)(ii), 
or (e)(3)(ii), sampling sites shall be located at the inlet of the first 
control device and at the outlet of the final control device.
    (B) To determine compliance with the enclosed combustion device 
total HAP concentration limit specified in Sec. 63.1281(d)(1)(i)(B), the 
sampling site shall be located at the outlet of the device.
    (ii) The gas volumetric flowrate shall be determined using Method 2, 
2A, 2C, or 2D, 40 CFR part 60, appendix A, as appropriate.
    (iii) To determine compliance with the control device percent 
reduction performance requirement in Sec. 63.1281(d)(1)(i)(A), 
63.1281(d)(1)(ii), or 63.1281(e)(3)(ii), the owner or operator shall use 
either Method 18, 40 CFR part 60, appendix A, or Method 25A, 40 CFR part 
60, appendix A; alternatively, any other method or data that have been 
validated according to the applicable procedures in Method 301 of 
appendix A of this part may be used. The following procedures shall be 
used to calculate the percentage of reduction:
    (A) The minimum sampling time for each run shall be 1 hour in which 
either an integrated sample or a minimum of four grab samples shall be 
taken. If grab sampling is used, then the samples shall be taken at 
approximately equal intervals in time, such as 15-minute intervals 
during the run.
    (B) The mass rate of either TOC (minus methane and ethane) or total 
HAP (Ei, Eo) shall be computed.
    (1) The following equations shall be used:
    [GRAPHIC] [TIFF OMITTED] TR17JN99.008
    
    [GRAPHIC] [TIFF OMITTED] TR17JN99.009
    
Where:

Cij, Coj = Concentration of sample component j of 
          the gas stream at the inlet and outlet of the control device, 
          respectively, dry basis, parts per million by volume.
Ei, Eo = Mass rate of TOC (minus methane and 
          ethane) or total HAP at the inlet and outlet of the control 
          device, respectively, dry basis, kilogram per hour.
Mij, Moj = Molecular weight of sample component j 
          of the gas stream at the inlet and outlet of the control 
          device, respectively, gram/gram-mole.
Qi, Qo = Flowrate of gas stream at the inlet and 
          outlet of the control device, respectively, dry standard cubic 
          meter per minute.
K2 = Constant, 2.494x10 -6 (parts per million) 
          -1 (gram-mole per standard cubic meter) (kilogram/
          gram) (minute/hour), where standard temperature is 20 deg.C.

    (2) When the TOC mass rate is calculated, all organic compounds 
(minus methane and ethane) measured by Method 18, of 40 CFR part 60, 
appendix A; or Method 25A, 40 CFR part 60, appendix A, shall be summed 
using the equations in paragraph (d)(3)(iii)(B)(1) of this section.
    (3) When the total HAP mass rate is calculated, only HAP chemicals 
listed in Table 1 of this subpart shall be summed using the equations in 
paragraph (d)(3)(iii)(B)(1) of this section.
    (C) The percentage of reduction in TOC (minus methane and ethane) or 
total HAP shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR17JN99.010

Where:

Rcd = Control efficiency of control device, percent.
Ei = Mass rate of TOC (minus methane and ethane) or total HAP 
          at the inlet to the control device as calculated under 
          paragraph (d)(3)(iii)(B) of this section, kilograms TOC per 
          hour or kilograms HAP per hour.
Eo = Mass rate of TOC (minus methane and ethane) or total HAP 
          at the outlet of the control device, as calculated under 
          paragraph (d)(3)(iii)(B) of this section, kilograms TOC per 
          hour or kilograms HAP per hour.


[[Page 126]]


    (D) If the vent stream entering a boiler or process heater with a 
design capacity less than 44 megawatts is introduced with the combustion 
air or as a secondary fuel, the weight-percentage of reduction of total 
HAP or TOC (minus methane and ethane) across the device shall be 
determined by comparing the TOC (minus methane and ethane) or total HAP 
in all combusted vent streams and primary and secondary fuels with the 
TOC (minus methane and ethane) or total HAP exiting the device, 
respectively.
    (iv) To determine compliance with the enclosed combustion device 
total HAP concentration limit specified in Sec. 63.1281(d)(1)(i)(B), the 
owner or operator shall use either Method 18, 40 CFR part 60, appendix 
A; or Method 25A, 40 CFR part 60, appendix A, to measure either TOC 
(minus methane and ethane) or total HAP. Alternatively, any other method 
or data that have been validated according to Method 301 of appendix A 
of this part, may be used. The following procedures shall be used to 
calculate parts per million by volume concentration, corrected to 3 
percent oxygen:
    (A) The minimum sampling time for each run shall be 1 hour in which 
either an integrated sample or a minimum of four grab samples shall be 
taken. If grab sampling is used, then the samples shall be taken at 
approximately equal intervals in time, such as 15-minute intervals 
during the run.
    (B) The TOC concentration or total HAP concentration shall be 
calculated according to paragraph (d)(3)(iv)(B)(1) or (d)(3)(iv)(B)(2) 
of this section.
    (1) The TOC concentration (CTOC) is the sum of the 
concentrations of the individual components and shall be computed for 
each run using the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JN99.011

Where:

CTOC = Concentration of total organic compounds minus methane 
          and ethane, dry basis, parts per million by volume.
Cji = Concentration of sample components j of sample i, dry 
          basis, parts per million by volume.
n = Number of components in the sample.
x = Number of samples in the sample run.

    (2) The total HAP concentration (CHAP) shall be computed 
according to the equation in paragraph (d)(3)(iv)(B)(1) of this section, 
except that only HAP chemicals listed in Table 1 of this subpart shall 
be summed.
    (C) The TOC concentration or total HAP concentration shall be 
corrected to 3 percent oxygen as follows:
    (1) The emission rate correction factor for excess air, integrated 
sampling and analysis procedures of Method 3B, 40 CFR part 60, appendix 
A, shall be used to determine the oxygen concentration 
(%O2d). The samples shall be taken during the same time that 
the samples are taken for determining TOC concentration or total HAP 
concentration.
    (2) The concentration corrected to 3 percent oxygen (Cc) 
shall be computed using the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JN99.012

Where:

Cc = TOC concentration of total HAP concentration corrected 
          to 3 percent oxygen, dry basis, parts per million by volume.
Cm = TOC concentration or total HAP concentration, dry basis, 
          parts per million by volume.
%O2d = Concentration of oxygen, dry basis, percent by volume.

    (4) For a design analysis conducted to meet the requirements of 
Sec. 63.1281(d)(1) or (e)(3)(ii), the owner or operator shall meet the 
requirements specified in paragraphs (d)(4)(i) and (d)(4)(ii) of this 
section. Documentation of the design analysis shall be submitted as a 
part of the Notification of Compliance Status Report as required in 
Sec. 63.1285(d)(1)(i).
    (i) The design analysis shall include analysis of the vent stream 
characteristics and control device operating parameters for the 
applicable control device as specified in paragraphs (d)(4)(i) (A) 
through (F) of this section.
    (A) For a thermal vapor incinerator, the design analysis shall 
include the vent stream composition, constituent

[[Page 127]]

concentrations, and flowrate and shall establish the design minimum and 
average temperatures in the combustion zone and the combustion zone 
residence time.
    (B) For a catalytic vapor incinerator, the design analysis shall 
include the vent stream composition, constituent concentrations, and 
flowrate and shall establish the design minimum and average temperatures 
across the catalyst bed inlet and outlet, and the design service life of 
the catalyst.
    (C) For a boiler or process heater, the design analysis shall 
include the vent stream composition, constituent concentrations, and 
flowrate; shall establish the design minimum and average flame zone 
temperatures and combustion zone residence time; and shall describe the 
method and location where the vent stream is introduced into the flame 
zone.
    (D) For a condenser, the design analysis shall include the vent 
stream composition, constituent concentrations, flowrate, relative 
humidity, and temperature, and shall establish the design outlet organic 
compound concentration level, design average temperature of the 
condenser exhaust vent stream, and the design average temperatures of 
the coolant fluid at the condenser inlet and outlet. As an alternative 
to the design analysis, an owner or operator may elect to use the 
procedures specified in paragraph (d)(5) of this section.
    (E) For a regenerable carbon adsorption, the design analysis shall 
include the vent stream composition, constituent concentrations, 
flowrate, relative humidity, and temperature, and shall establish the 
design exhaust vent stream organic compound concentration level, 
adsorption cycle time, number and capacity of carbon beds, type and 
working capacity of activated carbon used for the carbon beds, design 
total regeneration stream flow over the period of each complete carbon 
bed regeneration cycle, design carbon bed temperature after 
regeneration, design carbon bed regeneration time, and design service 
life of the carbon.
    (F) For a nonregenerable carbon adsorption system, such as a carbon 
canister, the design analysis shall include the vent stream composition, 
constituent concentrations, flowrate, relative humidity, and 
temperature, and shall establish the design exhaust vent stream organic 
compound concentration level, capacity of the carbon bed, type and 
working capacity of activated carbon used for the carbon bed, and design 
carbon replacement interval based on the total carbon working capacity 
of the control device and source operating schedule. In addition, these 
systems will incorporate dual carbon canisters in case of emission 
breakthrough occurring in one canister.
    (ii) If the owner or operator and the Administrator do not agree on 
a demonstration of control device performance using a design analysis, 
then the disagreement shall be resolved using the results of a 
performance test performed by the owner or operator in accordance with 
the requirements of paragraph (d)(3) of this section. The Administrator 
may choose to have an authorized representative observe the performance 
test.
    (5) As an alternative to the procedures in paragraphs (d)(3) and 
(d)(4)(i)(D) of this section, an owner or operator may elect to use the 
procedures documented in the GRI report entitled, ``Atmospheric Rich/
Lean Method for Determining Glycol Dehydrator Emissions,'' (GRI-95/
0368.1) as inputs for the model GRI-GLYCalcTM, Version 3.0 or 
higher, to determine condenser performance.
    (e) Compliance demonstration for control devices performance 
requirements. This paragraph applies to the demonstration of compliance 
with the control device performance requirements specified in 
Sec. 63.1281(d)(1) and (e)(3)(ii). Compliance shall be demonstrated 
using the requirements in paragraphs (e)(1) through (e)(3) of this 
section. As an alternative, an owner or operator that installs a 
condenser as the control device to achieve the requirements specified in 
Sec. 63.1281(d)(2)(ii) or Sec. 63.1275(c)(2), may demonstrate compliance 
according to paragraph (f) of this section. An owner or operator may 
switch between compliance with paragraph (e) of this section and 
compliance with paragraph (f) of this section only after at least 1 year 
of operation in compliance with the selected approach. Notification of 
such a change

[[Page 128]]

in the compliance method shall be reported in the next Periodic Report, 
as required in Sec. 63.1285(e), following the change.
    (1) The owner or operator shall establish a site specific maximum or 
minimum monitoring parameter value (as appropriate) according to the 
requirements of Sec. 63.1283(d)(5)(i).
    (2) The owner or operator shall calculate the daily average of the 
applicable monitored parameter in accordance with Sec. 63.1283(d)(4).
    (3) Compliance is achieved when the daily average of the monitoring 
parameter value calculated under paragraph (e)(2) of this section is 
either equal to or greater than the minimum or equal to or less than the 
maximum monitoring value established under paragraph (e)(1) of this 
section.
    (f) Compliance demonstration with percent reduction performance 
requirements--condensers. This paragraph applies to the demonstration of 
compliance with the performance requirements specified in 
Sec. 63.1281(d)(1)(ii) for condensers. Compliance shall be demonstrated 
using the procedures in paragraphs (f)(1) through (f)(3) of this 
section.
    (1) The owner or operator shall establish a site-specific condenser 
performance curve according to the procedures specified in 
Sec. 63.1283(d)(5)(ii).
    (2) Compliance with the percent reduction requirement in 
Sec. 63.1281(d)(1)(ii) or Sec. 63.1275(c)(2) shall be demonstrated by 
the procedures in paragraphs (f)(2)(i) through (f)(2)(iii) of this 
section.
    (i) The owner or operator must calculate the daily average condenser 
outlet temperature in accordance with Sec. 63.1283(d)(4).
    (ii) The owner or operator shall determine the condenser efficiency 
for the current operating day using the daily average condenser outlet 
temperature calculated in paragraph (f)(2)(i) of this section and the 
condenser performance curve established in paragraph (f)(1) of this 
section.
    (iii) Except as provided in paragraphs (f)(2)(iii) (A), (B), and (D) 
of this section, at the end of each operating day the owner or operator 
shall calculate the 30-day average HAP emission reduction from the 
condenser efficiencies determined in paragraph (f)(2)(ii) of this 
section for the preceding 30 operating days. If the owner or operator 
uses a combination of process modifications and a condenser in 
accordance with the requirements of Sec. 63.1275(c)(2), the 30-day 
average HAP emission reduction shall be calculated using the emission 
reduction achieved through process modifications and the condenser 
efficiency determined in paragraph (f)(2)(ii) of this section, both for 
the preceding 30 operating days.
    (A) After the compliance date specified in Sec. 63.1270(f), an owner 
or operator of a facility that stores natural gas that has less than 30 
days of data for determining the average HAP emission reduction, shall 
calculate the cumulative average at the end of the withdrawal season, 
each season, until 30 days of condenser operating data are accumulated. 
For a facility that does not store natural gas, the owner or operator 
that has less than 30 days of data for determining average HAP emission 
reduction, shall calculate the cumulative average at the end of the 
calendar year, each year, until 30 days of condenser operating data are 
accumulated.
    (B) After the compliance date specified in Sec. 63.1270(f), an owner 
or operator that has less than 30 days of data for determining the 
average HAP emission reduction, compliance is achieved if the average 
HAP emission reduction calculated in paragraph (f)(2)(iii)(A) of this 
section, is equal to or greater than 95.0 percent.
    (C) For the purposes of this subpart, a withdrawal season begins the 
first time gas is withdrawn from the storage field after July 1 of the 
calendar year and ends on June 30 of the next calendar year.
    (D) Glycol dehydration units that are operated continuously have the 
option of complying with the requirements specified in 40 CFR 63.772(g).
    (3) Compliance is achieved with the emission limitation specified in 
Sec. 63.1281(d)(1)(ii) or Sec. 63.1275(c)(2) if the average HAP emission 
reduction calculated in paragraph (f)(2)(iii) of this section is equal 
to or greater than 95.0 percent.

[[Page 129]]



Sec. 63.1283  Inspection and monitoring requirements.

    (a) This section applies to an owner or operator using air emission 
controls in accordance with the requirements of Sec. 63.1275.
    (b) [Reserved]
    (c) Closed-vent system inspection and monitoring requirements. (1) 
For each closed-vent system required to comply with this section, the 
owner or operator shall comply with the requirements of paragraphs 
(c)(2) through (7) of this section.
    (2) Except as provided in paragraphs (c) (5) and (6) of this 
section, each closed-vent system shall be inspected according to the 
procedures and schedule specified in paragraphs (c)(2) (i) and (ii) of 
this section.
    (i) For each closed-vent system joints, seams, or other connections 
that are permanently or semi-permanently sealed (e.g., a welded joint 
between two sections of hard piping or a bolted or gasketed ducting 
flange), the owner or operator shall:
    (A) Conduct an initial inspection according to the procedures 
specified in Sec. 63.1282(b) to demonstrate that the closed-vent system 
operates with no detectable emissions.
    (B) Conduct annual visual inspections for defects that could result 
in air emissions. Defects include, but are not limited to, visible 
cracks, holes, or gaps in piping; loose connections; or broken or 
missing caps or other closure devices. The owner or operator shall 
monitor a component or connection using the procedures specified in 
Sec. 63.1282(b) to demonstrate that it operates with no detectable 
emissions following any time the component or connection is repaired or 
replaced or the connection is unsealed.
    (ii) For closed-vent system components other than those specified in 
paragraph (c)(2)(i) of this section, the owner or operator shall:
    (A) Conduct an initial inspection according to the procedures 
specified in Sec. 63.1282(b) to demonstrate that the closed-vent system 
operates with no detectable emissions.
    (B) Conduct annual inspections according to the procedures specified 
in Sec. 63.1282(b) to demonstrate that the components or connections 
operate with no detectable emissions.
    (C) Conduct annual visual inspections for defects that could result 
in air emissions. Defects include, but are not limited to, visible 
cracks, holes, or gaps in ductwork; loose connections; or broken or 
missing caps or other closure devices.
    (3) In the event that a leak or defect is detected, the owner or 
operator shall repair the leak or defect as soon as practicable, except 
as provided in paragraph (c)(4) of this section.
    (i) A first attempt at repair shall be made no later than 5 calendar 
days after the leak is detected.
    (ii) Repair shall be completed no later than 15 calendar days after 
the leak is detected.
    (4) Delay of repair of a closed-vent system for which leaks or 
defects have been detected is allowed if the repair is technically 
infeasible without a shutdown, as defined in Sec. 63.1271, or if the 
owner or operator determines that emissions resulting from immediate 
repair would be greater than the fugitive emissions likely to result 
from delay of repair. Repair of such equipment shall be completed by the 
end of the next shutdown.
    (5) Any parts of the closed-vent system or cover that are 
designated, as described in paragraphs (c)(5) (i) and (ii) of this 
section, as unsafe to inspect are exempt from the inspection 
requirements of paragraphs (c)(2) (i) and (ii) of this section if:
    (i) The owner or operator determines that the equipment is unsafe to 
inspect because inspecting personnel would be exposed to an imminent or 
potential danger as a consequence of complying with paragraph (c)(2) (i) 
or (ii) of this section; and
    (ii) The owner or operator has a written plan that requires 
inspection of the equipment as frequently as practicable during safe-to-
inspect times.
    (6) Any parts of the closed-vent system or cover that are 
designated, as described in paragraphs (c)(6) (i) and (ii) of this 
section, as difficult to inspect are exempt from the inspection 
requirements of paragraphs (c)(2) (i) and (ii) of this section if:

[[Page 130]]

    (i) The owner or operator determines that the equipment cannot be 
inspected without elevating the inspecting personnel more than 2 meters 
above a support surface; and
    (ii) The owner or operator has a written plan that requires 
inspection of the equipment at least once every 5 years.
    (7) Records shall be maintained as specified in Sec. 63.1284(b)(5) 
through (8).
    (d) Control device monitoring requirements. (1) For each control 
device except as provided for in paragraph (d)(2) of this section, the 
owner or operator shall install and operate a continuous parameter 
monitoring system in accordance with the requirements of paragraphs 
(d)(3) through (9) of this section that will allow a determination to be 
made whether the control device is achieving the applicable performance 
requirements of Sec. 63.1281(d) or (e)(3). The continuous parameter 
monitoring system must meet the following specifications and 
requirements:
    (i) Each continuous parameter monitoring system shall measure data 
values at least once every hour and record either:
    (A) Each measured data value; or
    (B) Each block average value for each 1-hour period or shorter 
periods calculated from all measured data values during each period. If 
values are measured more frequently than once per minute, a single value 
for each minute may be used to calculate the hourly (or shorter period) 
block average instead of all measured values.
    (ii) The monitoring system must be installed, calibrated, operated, 
and maintained in accordance with the manufacturer's specifications or 
other written procedures that provide reasonable assurance that the 
monitoring equipment is operating properly.
    (2) An owner or operator is exempted from the monitoring 
requirements specified in paragraphs (d)(3) through (9) of this section 
for the following types of control devices:
    (i) A boiler or process heater in which all vent streams are 
introduced with the primary fuel or are used as the primary fuel;
    (ii) A boiler or process heater with a design heat input capacity 
equal to or greater than 44 megawatts.
    (3) The owner or operator shall install, calibrate, operate, and 
maintain a device equipped with a continuous recorder to measure the 
values of operating parameters appropriate for the control device as 
specified in either paragraph (d)(3)(i), (d)(3)(ii), or (d)(3)(iii) of 
this section.
    (i) A continuous monitoring system that measures the following 
operating parameters as applicable:
    (A) For a thermal vapor incinerator, a temperature monitoring device 
equipped with a continuous recorder. The monitoring device shall have a 
minimum accuracy of 2 percent of the temperature being 
monitored in  deg.C, or 2.5  deg.C, whichever value is 
greater. The temperature sensor shall be installed at a location in the 
combustion chamber downstream of the combustion zone.
    (B) For a catalytic vapor incinerator, a temperature monitoring 
device equipped with a continuous recorder. The device shall be capable 
of monitoring temperatures at two locations and have a minimum accuracy 
of 2 percent of the temperatures being monitored in  deg.C, 
or 2.5  deg.C, whichever value is greater. One temperature 
sensor shall be installed in the vent stream at the nearest feasible 
point to the catalyst bed inlet and a second temperature sensor shall be 
installed in the vent stream at the nearest feasible point to the 
catalyst bed outlet.
    (C) For a flare, a heat sensing monitoring device equipped with a 
continuous recorder that indicates the continuous ignition of the pilot 
flame.
    (D) For a boiler or process heater with a design heat input capacity 
of less than 44 megawatts, a temperature monitoring device equipped with 
a continuous recorder. The temperature monitoring device shall have a 
minimum accuracy of 2 percent of the temperature being 
monitored in  deg.C, or 2.5  deg.C, whichever value is 
greater. The temperature sensor shall be installed at a location in the 
combustion chamber downstream of the combustion zone.
    (E) For a condenser, a temperature monitoring device equipped with a 
continuous recorder. The temperature monitoring device shall have a 
minimum accuracy of 2 percent of the

[[Page 131]]

temperature being monitored in  deg.C, or 2.5  deg.C, 
whichever value is greater. The temperature sensor shall be installed at 
a location in the exhaust vent stream from the condenser.
    (F) For a regenerative-type carbon adsorption system:
    (1) A continuous parameter monitoring system to measure and record 
the average total regeneration stream mass flow or volumetric flow 
during each carbon bed regeneration cycle. The integrating regenerating 
stream flow monitoring device must have an accuracy of 10 
percent; and
    (2) A continuous parameter monitoring system to measure and record 
the average carbon bed temperature for the duration of the carbon bed 
steaming cycle and to measure the actual carbon bed temperature after 
regeneration and within 15 minutes of completing the cooling cycle. The 
temperature monitoring device shall have a minimum accuracy of 
2 percent of the temperature being monitored in  deg.C, or 
2.5  deg.C, whichever value is greater.
    (G) For a nonregenerative-type carbon adsorption system, the owner 
or operator shall monitor the design carbon replacement interval 
established using a performance test performed in accordance with 
Sec. 63.1282(d)(3) or a design analysis in accordance with 
Sec. 63.1282(d)(4)(i)(F) and shall be based on the total carbon working 
capacity of the control device and source operating schedule.
    (ii) A continuous monitoring system that measures the concentration 
level of organic compounds in the exhaust vent stream from the control 
device using an organic monitoring device equipped with a continuous 
recorder. The monitor must meet the requirements of Performance 
Specification 8 or 9 of appendix B of 40 CFR part 60 and must be 
installed, calibrated, and maintained according to the manufacturer's 
specifications.
    (iii) A continuous monitoring system that measures alternative 
operating parameters other than those specified in paragraph (d)(3)(i) 
or (d)(3)(ii) of this section upon approval of the Administrator as 
specified in Sec. 63.8(f)(1) through (5).
    (4) Using the data recorded by the monitoring system, the owner or 
operator must calculate the daily average value for each monitored 
operating parameter for each operating day. If HAP emissions unit 
operation is continuous, the operating day is a 24-hour period. If the 
HAP emissions unit operation is not continuous, the operating day is the 
total number of hours of control device operation per 24-hour period. 
Valid data points must be available for 75 percent of the operating 
hours in an operating day to compute the daily average.
    (5) For each operating parameter monitored in accordance with the 
requirements of paragraph (d)(3) of this section, the owner or operator 
shall comply with paragraph (d)(5)(i) of this section for all control 
devices, and when condensers are installed, the owner or operator shall 
also comply with paragraph (d)(5)(ii) of this section for condensers.
    (i) The owner or operator shall establish a minimum operating 
parameter value or a maximum operating parameter value, as appropriate 
for the control device, to define the conditions at which the control 
device must be operated to continuously achieve the applicable 
performance requirements of Sec. 63.1281(d)(1) or (e)(3)(ii). Each 
minimum or maximum operating parameter value shall be established as 
follows:
    (A) If the owner or operator conducts performance tests in 
accordance with the requirements of Sec. 63.1282(d)(3) to demonstrate 
that the control device achieves the applicable performance requirements 
specified in Sec. 63.1281(d)(1) or (e)(3)(ii), then the minimum 
operating parameter value or the maximum operating parameter value shall 
be established based on values measured during the performance test and 
supplemented, as necessary, by control device design analysis or control 
device manufacturer's recommendations or a combination of both.
    (B) If the owner or operator uses a control device design analysis 
in accordance with the requirements of Sec. 63.1282(d)(4) to demonstrate 
that the control device achieves the applicable performance requirements 
specified in Sec. 63.1281(d)(1) or (e)(3)(ii), then the minimum 
operating parameter value or the maximum operating parameter value

[[Page 132]]

shall be established based on the control device design analysis and may 
be supplemented by the control device manufacturer's recommendations.
    (ii) The owner or operator shall establish a condenser performance 
curve showing the relationship between condenser outlet temperature and 
condenser control efficiency. The curve shall be established as follows:
    (A) If the owner or operator conducts a performance test in 
accordance with the requirements of Sec. 63.1282(d)(3) to demonstrate 
that the condenser achieves the applicable performance requirements in 
Sec. 63.1281(d)(1) or (e)(3)(ii), then the condenser performance curve 
shall be based on values measured during the performance test and 
supplemented as necessary by control device design analysis, or control 
device manufacturer's recommendations, or a combination or both.
    (B) If the owner or operator uses a control device design analysis 
in accordance with the requirements of Sec. 63.1282(d)(4)(i)(D) to 
demonstrate that the condenser achieves the applicable performance 
requirements specified in Sec. 63.1281(d)(1) or (e)(3)(ii), then the 
condenser performance curve shall be based on the condenser design 
analysis and may be supplemented by the control device manufacturer's 
recommendations.
    (C) As an alternative to paragraphs (d)(5)(ii)(A) and (B) of this 
section, the owner or operator may elect to use the procedures 
documented in the GRI report entitled, ``Atmospheric Rich/Lean Method 
for Determining Glycol Dehydrator Emissions'' (GRI-95/0368.1) as inputs 
for the model GRI-GLYCalcTM, Version 3.0 or higher, to 
generate a condenser performance curve.
    (6) An excursion for a given control device is determined to have 
occurred when the monitoring data or lack of monitoring data result in 
any one of the criteria specified in paragraphs (d)(6)(i) through 
(d)(6)(iv) of this section being met. When multiple operating parameters 
are monitored for the same control device and during the same operating 
day, and more than one of these operating parameters meets an excursion 
criterion specified in paragraphs (d)(6)(i) through (d)(6)(iv) of this 
section, then a single excursion is determined to have occurred for the 
control device for that operating day.
    (i) An excursion occurs when the daily average value of a monitored 
operating parameter is less than the minimum operating parameter limit 
(or, if applicable, greater than the maximum operating parameter limit) 
established for the operating parameter in accordance with the 
requirements of paragraph (d)(5)(i) of this section.
    (ii) An excursion occurs when average condenser efficiency 
calculated according to the requirements specified in 
Sec. 63.1282(f)(2)(iii) is less than 95.0 percent, as specified in 
Sec. 63.1282(f)(3).
    (iii) An excursion occurs when the monitoring data are not available 
for at least 75 percent of the operating hours.
    (iv) If the closed-vent system contains one or more bypass devices 
that could be used to divert all or a portion of the gases, vapors, or 
fumes from entering the control device, an excursion occurs when:
    (A) For each bypass line subject to Sec. 63.1281(c)(3)(i)(A) the 
flow indicator indicates that flow has been detected and that the stream 
has been diverted away from the control device to the atmosphere.
    (B) For each bypass line subject to Sec. 63.1281(c)(3)(i)(B), if the 
seal or closure mechanism has been broken, the bypass line valve 
position has changed, the key for the lock-and-key type lock has been 
checked out, or the car-seal has broken.
    (7) For each excursion, except as provided for in paragraph (d)(8) 
of this section, the owner or operator shall be deemed to have failed to 
have applied control in a manner that achieves the required operating 
parameter limits. Failure to achieve the required operating parameter 
limits is a violation of this standard.
    (8) An excursion is not a violation of the operating parameter limit 
as specified in paragraphs (d)(8)(i) and (d)(8)(ii) of this section.
    (i) An excursion does not count toward the number of excused 
excursions allowed under paragraph (d)(8)(ii) of this section when the 
excursion occurs during any one of the following periods:

[[Page 133]]

    (A) During a period of startup, shutdown, or malfunction when the 
affected facility is operated during such period in accordance with the 
facility's startup, shutdown, and malfunction plan; or
    (B) During periods of non-operation of the unit or the process that 
is vented to the control device (resulting in cessation of HAP emissions 
to which the monitoring applies).
    (ii) For each control device, or combinations of control devices, 
installed on the same HAP emissions unit, one excused excursion is 
allowed per semiannual period for any reason. The initial semiannual 
period is the 6-month reporting period addressed by the first Periodic 
Report submitted by the owner or operator in accordance with 
Sec. 63.1285(e) of this subpart.
    (9) Nothing in paragraphs (d)(1) through (d)(8) of this section 
shall be construed to allow or excuse a monitoring parameter excursion 
caused by any activity that violates other applicable provisions of this 
subpart.



Sec. 63.1284  Recordkeeping requirements.

    (a) The recordkeeping provisions of subpart A of this part, that 
apply and those that do not apply to owners and operators of facilities 
subject to this subpart are listed in Table 2 of this subpart.
    (b) Except as specified in paragraphs (c) and (d) of this section, 
each owner or operator of a facility subject to this subpart shall 
maintain the records specified in paragraphs (b)(1) through (b)(10) of 
this section:
    (1) The owner or operator of an affected source subject to the 
provisions of this subpart shall maintain files of all information 
(including all reports and notifications) required by this subpart. The 
files shall be retained for at least 5 years following the date of each 
occurrence, measurement, maintenance, corrective action, report or 
period.
    (i) All applicable records shall be maintained in such a manner that 
they can be readily accessed.
    (ii) The most recent 12 months of records shall be retained on site 
or shall be accessible from a central location by computer or other 
means that provides access within 2 hours after a request.
    (iii) The remaining 4 years of records may be retained offsite.
    (iv) Records may be maintained in hard copy or computer-readable 
form including, but not limited to, on paper, microfilm, computer, 
floppy disk, magnetic tape, or microfiche.
    (2) Records specified in Sec. 63.10(b)(2);
    (3) Records specified in Sec. 63.10(c) for each monitoring system 
operated by the owner or operator in accordance with the requirements of 
Sec. 63.1283(d). Notwithstanding the previous sentence, monitoring data 
recorded during periods identified in paragraphs (b)(2)(i) through 
(b)(2)(iv) of this section shall not be included in any average or 
percent leak rate computed under this subpart. Records shall be kept of 
the times and durations of all such periods and any other periods during 
process or control device operation when monitors are not operating.
    (i) Monitoring system breakdowns, repairs, calibration checks, and 
zero (low-level) and high-level adjustments;
    (ii) Startup, shutdown, and malfunction events. During startup, 
shutdown and malfunction events, the owner or operator shall maintain 
records indicating whether or not the startup, shutdown, or malfunction 
plan, required under Sec. 63.1272(d), was followed.
    (iii) Periods of non-operation resulting in cessation of the 
emissions to which the monitoring applies; and
    (iv) Excursions due to invalid data as defined in 
Sec. 63.1283(d)(6)(iii).
    (4) Each owner or operator using a control device to comply with 
Sec. 63.1274 shall keep the following records up-to-date and readily 
accessible:
    (i) Continuous records of the equipment operating parameters 
specified to be monitored under Sec. 63.1283(d) or specified by the 
Administrator in accordance with Sec. 63.1283(d)(3)(iii). For flares, 
the hourly records and records of pilot flame outages specified in 
Sec. 63.1283(d)(3)(i)(C) shall be maintained in place of continuous 
records.
    (ii) Records of the daily average value of each continuously 
monitored parameter for each operating day determined according to the 
procedures specified in Sec. 63.1283(d)(4) of this subpart. For flares, 
records of the times and duration of all periods during

[[Page 134]]

which all pilot flames are absent shall be kept rather than daily 
averages.
    (iii) Hourly records of whether the flow indicator specified under 
Sec. 63.1281(c)(3)(i)(A) was operating and whether flow was detected at 
any time during the hour, as well as records of the times and durations 
of all periods when the vent stream is diverted from the control device 
or the monitor is not operating.
    (iv) Where a seal or closure mechanism is used to comply with 
Sec. 63.1281(c)(3)(i)(B), hourly records of flow are not required. In 
such cases, the owner or operator shall record that the monthly visual 
inspection of the seals or closure mechanism has been done, and shall 
record the duration of all periods when the seal mechanism is broken, 
the bypass line valve position has changed, or the key for a lock-and-
key type lock has been checked out, and records of any car-seal that has 
broken.
    (5) Records identifying all parts of the closed-vent system that are 
designated as unsafe to inspect in accordance with Sec. 63.1283(c)(5), 
an explanation of why the equipment is unsafe to inspect, and the plan 
for inspecting the equipment.
    (6) Records identifying all parts of the closed-vent system that are 
designated as difficult to inspect in accordance with 
Sec. 63.1283(c)(6), an explanation of why the equipment is difficult to 
inspect, and the plan for inspecting the equipment.
    (7) For each inspection conducted in accordance with 
Sec. 63.1283(c), during which a leak or defect is detected, a record of 
the information specified in paragraphs (b)(7)(i) through (b)(7)(viii) 
of this section.
    (i) The instrument identification numbers, operator name or 
initials, and identification of the equipment.
    (ii) The date the leak or defect was detected and the date of the 
first attempt to repair the leak or defect.
    (iii) Maximum instrument reading measured by the method specified in 
Sec. 63.1283(c)(3) after the leak or defect is successfully repaired or 
determined to be nonrepairable.
    (iv) ``Repair delayed'' and the reason for the delay if a leak or 
defect is not repaired within 15 calendar days after discovery of the 
leak or defect.
    (v) The name, initials, or other form of identification of the owner 
or operator (or designee) whose decision it was that repair could not be 
effected without a shutdown.
    (vi) The expected date of successful repair of the leak or defect if 
a leak or defect is not repaired within 15 calendar days.
    (vii) Dates of shutdowns that occur while the equipment is 
unrepaired.
    (viii) The date of successful repair of the leak or defect.
    (8) For each inspection conducted in accordance with Sec. 63.1283(c) 
during which no leaks or defects are detected, a record that the 
inspection was performed, the date of the inspection, and a statement 
that no leaks or defects were detected.
    (9) Records of glycol dehydration unit baseline operations 
calculated as required under Sec. 63.1281(e)(1).
    (10) Records required in Sec. 63.1281(e)(3)(i) documenting that the 
facility continues to operate under the conditions specified in 
Sec. 63.1281(e)(2).
    (c) An owner or operator that elects to comply with the benzene 
emission limit specified in Sec. 63.1275(b)(1)(ii) shall document, to 
the Administrator's satisfaction, the following items:
    (1) The method used for achieving compliance and the basis for using 
this compliance method; and
    (2) The method used for demonstrating compliance with 0.90 megagrams 
per year of benzene.
    (3) Any information necessary to demonstrate compliance as required 
in the methods specified in paragraphs (c)(1) and (c)(2) of this 
section.
    (d) An owner or operator that is exempt from control requirements 
under Sec. 63.1274(d) shall maintain the records specified in paragraph 
(d)(1) or (d)(2) of this section, as appropriate, for each glycol 
dehydration unit that is not controlled according to the requirements of 
Sec. 63.1274(c).
    (1) The actual annual average natural gas throughput (in terms of 
natural gas flowrate to the glycol dehydration unit per day), as 
determined in accordance with Sec. 63.1282(a)(1); or
    (2) The actual average benzene emissions (in terms of benzene 
emissions

[[Page 135]]

per year), as determined in accordance with Sec. 63.1282(a)(2).
    (e) Record the following when using a flare to comply with 
Sec. 63.1281(d):
    (1) Flare design (i.e., steam-assisted, air-assisted, or non-
assisted);
    (2) All visible emission readings, heat content determinations, 
flowrate measurements, and exit velocity determinations made during the 
compliance determination required by Sec. 63.1282(d)(2); and
    (3) All periods during the compliance determination when the pilot 
flame is absent.



Sec. 63.1285  Reporting requirements.

    (a) The reporting provisions of subpart A, of this part that apply 
and those that do not apply to owners and operators of facilities 
subject to this subpart are listed in Table 2 of this subpart.
    (b) Each owner or operator of a facility subject to this subpart 
shall submit the information listed in paragraphs (b)(1) through (b)(6) 
of this section, except as provided in paragraph (b)(7) of this section.
    (1) The initial notifications required for existing affected sources 
under Sec. 63.9(b)(2) shall be submitted by 1 year after an affected 
source becomes subject to the provisions of this subpart or by June 17, 
2000, whichever is later. Affected sources that are major sources on or 
before June 17, 2000 and plan to be area sources by June 17, 2002 shall 
include in this notification a brief, nonbinding description of a 
schedule for the action(s) that are planned to achieve area source 
status.
    (2) The date of the performance evaluation as specified in 
Sec. 63.8(e)(2), required only if the owner or operator is requested by 
the Administrator to conduct a performance evaluation for a continuous 
monitoring system. A separate notification of the performance evaluation 
is not required if it is included in the initial notification submitted 
in accordance with paragraph (b)(1) of this section.
    (3) The planned date of a performance test at least 60 days before 
the test in accordance with Sec. 63.7(b). Unless requested by the 
Administrator, a site-specific test plan is not required by this 
subpart. If requested by the Administrator, the owner or operator must 
also submit the site-specific test plan required by Sec. 63.7(c) with 
the notification of the performance test. A separate notification of the 
performance test is not required if it is included in the initial 
notification submitted in accordance with paragraph (b)(1) of this 
section.
    (4) A Notification of Compliance Status Report as described in 
paragraph (d) of this section;
    (5) Periodic Reports as described in paragraph (e) of this section; 
and
    (6) Startup, shutdown, and malfunction reports, as specified in 
Sec. 63.10(d)(5), shall be submitted as required. Separate startup, 
shutdown, or malfunction reports as described in Sec. 63.10(d)(5)(i) are 
not required if the information is included in the Periodic Report 
specified in paragraph (e) of this section.
    (7) Each owner or operator of a glycol dehydration unit subject to 
this subpart that is exempt from the control requirements for glycol 
dehydration unit process vents in Sec. 63.1275, is exempt from all 
reporting requirements for major sources in this subpart for that unit.
    (c) [Reserved]
    (d) Each owner or operator of a source subject to this subpart shall 
submit a Notification of Compliance Status Report as required under 
Sec. 63.9(h) within 180 days after the compliance date specified in 
Sec. 63.1270(d). In addition to the information required under 
Sec. 63.9(h), the Notification of Compliance Status Report shall include 
the information specified in paragraphs (d)(1) through (d)(10) of this 
section. This information may be submitted in an operating permit 
application, in an amendment to an operating permit application, in a 
separate submittal, or in any combination of the three. If all of the 
information required under this paragraph have been submitted at any 
time prior to 180 days after the applicable compliance dates specified 
in Sec. 63.1270(d), a separate Notification of Compliance Status Report 
is not required. If an owner or operator submits the information 
specified in paragraphs (d)(1) through (d)(9) of this section at 
different times, and/or different submittals, later submittals may refer 
to

[[Page 136]]

earlier submittals instead of duplicating and resubmitting the 
previously submitted information.
    (1) If a closed-vent system and a control device other than a flare 
are used to comply with Sec. 63.1274, the owner or operator shall 
submit:
    (i) The design analysis documentation specified in 
Sec. 63.1282(d)(4) of this subpart if the owner or operator elects to 
prepare a design analysis; or
    (ii) If the owner or operator elects to conduct a performance test, 
the performance test results including the information specified in 
paragraphs (d)(1)(ii)(A) and (B) of this section. Results of a 
performance test conducted prior to the compliance date of this subpart 
can be used provided that the test was conducted using the methods 
specified in Sec. 63.1282(d)(3), and that the test conditions are 
representative of current operating conditions.
    (A) The percent reduction of HAP or TOC, or the outlet concentration 
of HAP or TOC (parts per million by volume on a dry basis), determined 
as specified in Sec. 63.1282(d)(3) of this subpart; and
    (B) The value of the monitored parameters specified in 
Sec. 63.1283(d) of this subpart, or a site-specific parameter approved 
by the permitting agency, averaged over the full period of the 
performance test.
    (2) If a closed-vent system and a flare are used to comply with 
Sec. 63.1274, the owner or operator shall submit performance test 
results including the information in paragraphs (d)(2)(i) and (ii) of 
this section.
    (i) All visible emission readings, heat content determinations, 
flowrate measurements, and exit velocity determinations made during the 
compliance determination required by Sec. 63.1282(d)(2) of this subpart, 
and
    (ii) A statement of whether a flame was present at the pilot light 
over the full period of the compliance determination.
    (3) The owner or operator shall submit one complete test report for 
each test method used for a particular source.
    (i) For additional tests performed using the same test method, the 
results specified in paragraph (d)(1)(ii) of this section shall be 
submitted, but a complete test report is not required.
    (ii) A complete test report shall include a sampling site 
description, description of sampling and analysis procedures and any 
modifications to standard procedures, quality assurance procedures, 
record of operating conditions during the test, record of preparation of 
standards, record of calibrations, raw data sheets for field sampling, 
raw data sheets for field and laboratory analyses, documentation of 
calculations, and any other information required by the test method.
    (4) For each control device other than a flare used to meet the 
requirements of Sec. 63.1274, the owner or operator shall submit the 
information specified in paragraphs (d)(4)(i) through (iii) of this 
section for each operating parameter required to be monitored in 
accordance with the requirements of Sec. 63.1283(d).
    (i) The minimum operating parameter value or maximum operating 
parameter value, as appropriate for the control device, established by 
the owner or operator to define the conditions at which the control 
device must be operated to continuously achieve the applicable 
performance requirements of Sec. 63.1281(d)(1) or (e)(3)(ii).
    (ii) An explanation of the rationale for why the owner or operator 
selected each of the operating parameter values established in 
Sec. 63.1283(d)(5) of this subpart. This explanation shall include any 
data and calculations used to develop the value, and a description of 
why the chosen value indicates that the control device is operating in 
accordance with the applicable requirements of Sec. 63.1281(d)(1) or 
(e)(3)(ii).
    (iii) A definition of the source's operating day for purposes of 
determining daily average values of monitored parameters. The definition 
shall specify the times at which an operating day begins and ends.
    (5) Results of any continuous monitoring system performance 
evaluations shall be included in the Notification of Compliance Status 
Report.
    (6) After a title V permit has been issued to the owner or operator 
of an affected source, the owner or operator

[[Page 137]]

of such source shall comply with all requirements for compliance status 
reports contained in the source's title V permit, including reports 
required under this subpart. After a title V permit has been issued to 
the owner or operator of an affected source, and each time a 
notification of compliance status is required under this subpart, the 
owner or operator of such source shall submit the notification of 
compliance status to the appropriate permitting authority following 
completion of the relevant compliance demonstration activity specified 
in this subpart.
    (7) The owner or operator that elects to comply with the 
requirements of Sec. 63.1275(b)(1)(ii) shall submit the records required 
under Sec. 63.1284(c).
    (8) The owner or operator shall submit an analysis demonstrating 
whether an affected source is a major source using the maximum 
throughput calculated according to Sec. 63.1270(a).
    (9) The owner or operator shall submit a statement as to whether the 
source has complied with the requirements of this subpart.
    (10) The owner or operator shall submit the analysis prepared under 
Sec. 63.1281(e)(2) to demonstrate that the conditions by which the 
facility will be operated to achieve an overall HAP emission reduction 
of 95.0 percent through process modifications or a combination of 
process modifications and one or more control devices.
    (e) Periodic Reports. An owner or operator shall prepare Periodic 
Reports in accordance with paragraphs (e)(1) and (2) of this section and 
submit them to the Administrator.
    (1) An owner or operator shall submit Periodic Reports semiannually, 
beginning 60 operating days after the end of the applicable reporting 
period. The first report shall be submitted no later than 240 days after 
the date the Notification of Compliance Status Report is due and shall 
cover the 6-month period beginning on the date the Notification of 
Compliance Status Report is due.
    (2) The owner or operator shall include the information specified in 
paragraphs (e)(2)(i) through (viii) of this section, as applicable.
    (i) The information required under Sec. 63.10(e)(3). For the 
purposes of this subpart and the information required under 
Sec. 63.10(e)(3), excursions (as defined in Sec. 63.1283(d)(6)) shall be 
considered excess emissions.
    (ii) A description of all excursions as defined in 
Sec. 63.1283(d)(6) of this subpart that have occurred during the 6-month 
reporting period.
    (A) For each excursion caused when the daily average value of a 
monitored operating parameter is less than the minimum operating 
parameter limit (or, if applicable, greater than the maximum operating 
parameter limit), as specified in Sec. 63.1283(d)(6)(i), the report must 
include the daily average values of the monitored parameter, the 
applicable operating parameter limit, and the date and duration of the 
period that the excursion occurred.
    (B) For each excursion caused when the 30-day average condenser 
control efficiency is less than 95.0 percent, as specified in 
Sec. 63.1283(d)(6)(ii), the report must include the 30-day average 
values of the condenser control efficiency, and the date and duration of 
the period that the excursion occurred.
    (C) For each excursion caused by lack of monitoring data, as 
specified in Sec. 63.1283(d)(6)(iii), the report must include the date 
and duration of period when the monitoring data were not collected and 
the reason why the data were not collected.
    (iii) For each inspection conducted in accordance with 
Sec. 63.1283(c) during which a leak or defect is detected, the records 
specified in Sec. 63.1284(b)(7) must be included in the next Periodic 
Report.
    (iv) For each closed-vent system with a bypass line subject to 
Sec. 63.1281(c)(3)(i)(A), records required under Sec. 63.1284(b)(4)(iii) 
of all periods when the vent stream is diverted from the control device 
through a bypass line. For each closed-vent system with a bypass line 
subject to Sec. 63.1281(c)(3)(i)(B), records required under 
Sec. 63.1284(b)(4)(iv) of all periods in which the seal or closure 
mechanism is broken, the bypass valve position has changed, or the key 
to unlock the bypass line valve was checked out.
    (v) If an owner or operator elects to comply with 
Sec. 63.1275(b)(1)(ii), the records required under Sec. 63.1284(c)(3).
    (vi) The information in paragraphs (e)(2)(vi)(A) and (B) of this 
section shall

[[Page 138]]

be stated in the Periodic Report, when applicable.
    (A) No excursions.
    (B) No continuous monitoring system has been inoperative, out of 
control, repaired, or adjusted.
    (vii) Any change in compliance methods as specified in 
Sec. 63.1275(b).
    (viii) If the owner or operator elects to comply with 
Sec. 63.1275(c)(2), the records required under Sec. 63.1284(b)(10).
    (f) Notification of process change. Whenever a process change is 
made, or a change in any of the information submitted in the 
Notification of Compliance Status Report, the owner or operator shall 
submit a report within 180 days after the process change is made or as a 
part of the next Periodic Report as required under paragraph (e) of this 
section, whichever is sooner. The report shall include:
    (1) A brief description of the process change;
    (2) A description of any modification to standard procedures or 
quality assurance procedures;
    (3) Revisions to any of the information reported in the original 
Notification of Compliance Status Report under paragraph (d) of this 
section; and
    (4) Information required by the Notification of Compliance Status 
Report under paragraph (d) of this section for changes involving the 
addition of processes or equipment.



Sec. 63.1286  Delegation of authority.

    (a) In delegating implementation and enforcement authority to a 
State under section 112(l) of the Act, the authorities contained in 
paragraph (b) of this section shall be retained by the Administrator and 
not transferred to a State.
    (b) Authorities will not be delegated to States for Secs. 63.1282 
and 63.1287 of this subpart.



Sec. 63.1287  Alternative means of emission limitation.

    (a) If, in the judgment of the Administrator, an alternative means 
of emission limitation will achieve a reduction in HAP emissions at 
least equivalent to the reduction in HAP emissions from that source 
achieved under the applicable requirements in Secs. 63.1274 through 
63.1281, the Administrator will publish a notice in the Federal Register 
permitting the use of the alternative means for purposes of compliance 
with that requirement. The notice may condition the permission on 
requirements related to the operation and maintenance of the alternative 
means.
    (b) Any notice under paragraph (a) of this section shall be 
published only after public notice and an opportunity for a hearing.
    (c) Any person seeking permission to use an alternative means of 
compliance under this section shall collect, verify, and submit to the 
Administrator information showing that this means achieves equivalent 
emission reductions.



Secs. 63.1288-63.1289  [Reserved]

                     Appendix to Subpart HHH--Tables

    Table 1.--List of Hazardous Air Pollutants (HAP) for Subpart HHH
------------------------------------------------------------------------
              CAS Number a                        Chemical name
------------------------------------------------------------------------
75070..................................  Acetaldehyde
71432..................................  Benzene (includes benzene in
                                          gasoline)
75150..................................  Carbon disulfide
463581.................................  Carbonyl sulfide
100414.................................  Ethyl benzene
107211.................................  Ethylene glycol
75050..................................  Acetaldehyde
50000..................................  Formaldehyde
110543.................................  n-Hexane
91203..................................  Naphthalene
108883.................................  Toluene
540841.................................  2,2,4-Trimethylpentane
1330207................................  Xylenes (isomers and mixture)
95476..................................  o-Xylene
108383.................................  m-Xylene
106423.................................  p-Xylene
------------------------------------------------------------------------
a CAS numbers refer to the Chemical Abstracts Services registry number
  assigned to specific compounds, isomers, or mixtures of compounds.


[[Page 139]]


           Table 2 to Subpart HHH.--Applicability of 40 CFR Part 63 General Provisions to Subpart HHH
----------------------------------------------------------------------------------------------------------------
    General provisions reference      Applicable to  subpart HHH                    Explanation
----------------------------------------------------------------------------------------------------------------
Sec.  63.1(a)(1)...................  Yes
Sec.  63.1(a)(2)...................  Yes
Sec.  63.1(a)(3)...................  Yes
Sec.  63.1(a)(4)...................  Yes
Sec.  63.1(a)(5)...................  No.........................  Section reserved.
Sec.  63.1(a)(6) through (a)(8)....  Yes
Sec.  63.1(a)(9)...................  No.........................  Section reserved.
Sec.  63.1(a)(10)..................  Yes
Sec.  63.1(a)(11)..................  Yes
Sec.  63.1(a)(12) through (a)(14)..  Yes
Sec.  63.1(b)(1)...................  No.........................  Subpart HHH specifies applicability.
Sec.  63.1(b)(2)...................  Yes
Sec.  63.1(b)(3)...................  No.........................
Sec.  63.1(c)(1)...................  No.........................  Subpart HHH specifies applicability.
Sec.  63.1(c)(2)...................  No
Sec.  63.1(c)(3)...................  No.........................  Section reserved.
Sec.  63.1(c)(4)...................  Yes
Sec.  63.1(c)(5)...................  Yes
Sec.  63.1(d)......................  No.........................  Section reserved.
Sec.  63.1(e)......................  Yes
Sec.  63.2.........................  Yes........................  Except definition of major source is unique
                                                                   for this source category and there are
                                                                   additional definitions in subpart HHH.
Sec.  63.3(a) through (c)..........  Yes
Sec.  63.4(a)(1) through (a)(3)....  Yes
Sec.  63.4(a)(4)...................  No.........................  Section reserved.
Sec.  63.4(a)(5)...................  Yes
Sec.  63.4(b)......................  Yes
Sec.  63.4(c)......................  Yes
Sec.  63.5(a)(1)...................  Yes
Sec.  63.5(a)(2)...................  No.........................  Preconstruction review required only for major
                                                                   sources that commence construction after
                                                                   promulgation of the standard.
Sec.  63.5(b)(1)...................  Yes
Sec.  63.5(b)(2)...................  No.........................  Section reserved.
Sec.  63.5(b)(3)...................  Yes
Sec.  63.5(b)(4)...................  Yes
Sec.  63.5(b)(5)...................  Yes
Sec.  63.5(b)(6)...................  Yes
Sec.  63.5(c)......................  No.........................  Section reserved.
Sec.  63.5(d)(1)...................  Yes
Sec.  63.5(d)(2)...................  Yes
Sec.  63.5(d)(3)...................  Yes
Sec.  63.5(d)(4)...................  Yes
Sec.  63.5(e)......................  Yes
Sec.  63.5(f)(1)...................  Yes
Sec.  63.5(f)(2)...................  Yes
Sec.  63.6(a)......................  Yes
Sec.  63.6(b)(1)...................  Yes
Sec.  63.6(b)(2)...................  Yes
Sec.  63.6(b)(3)...................  Yes
Sec.  63.6(b)(4)...................  Yes
Sec.  63.6(b)(5)...................  Yes
Sec.  63.6(b)(6)...................  No.........................  Section reserved.

[[Page 140]]

 
Sec.  63.6(b)(7)...................  Yes
Sec.  63.6(c)(1)...................  Yes
Sec.  63.6(c)(2)...................  Yes
Sec.  63.6(c)(3) and (c)(4)........  No.........................  Section reserved.
Sec.  63.6(c)(5)...................  Yes
Sec.  63.6(d)......................  No.........................  Section reserved.
Sec.  63.6(e)......................  Yes
Sec.  63.6(e)......................  Yes                          Except as otherwise specified.
Sec.  63.6(e)(1)(i)................  No.........................  Addressed in Sec.  63.1272.
Sec.  63.6(e)(1)(ii)...............  Yes
Sec.  63.6(e)(1)(iii)..............  Yes
Sec.  63.6(e)(2)...................  Yes
Sec.  63.6(e)(3)(i)................  Yes........................  Except as otherwise specified.
Sec.  63.6(e)(3)(i)(A).............  No.........................  Addressed by Sec.  63.1272(c).
Sec.  63.6(e)(3)(i)(B).............  Yes
Sec.  63.6(e)(3)(i)(C).............  Yes
Sec.  63.6(e)(3)(ii) through         Yes
 (3)(vi).
Sec.  63.6(e)(3)(vii)..............
Sec.  63.6(e)(3)(vii) (A)..........  Yes
Sec.  63.6(e)(3)(vii) (B)..........  Yes........................  Except that the plan must provide for
                                                                   operation in compliance with Sec.
                                                                   63.1272(c).
Sec.  63.6(e)(3)(vii) (C)..........  Yes
Sec.  63.6(e)3)(viii)..............  Yes
Sec.  63.7(e)(1)...................  Yes
Sec.  63.7(e)(2)...................  Yes
Sec.  63.7(e)(3)...................  Yes
Sec.  63.7(e)(4)...................  Yes
Sec.  63.7(f)......................  Yes
Sec.  63.7(g)......................  Yes
Sec.  63.7(h)......................  Yes
Sec.  63.8(a)(1)...................  Yes
Sec.  63.8(a)(2)...................  Yes
Sec.  63.8(a)(3)...................  No.........................  Section reserved.
Sec.  63.8(a)(4)...................  Yes
Sec.  63.8(b)(1)...................  Yes
Sec.  63.8(b)(2)...................  Yes
Sec.  63.8(b)(3)...................  Yes
Sec.  63.8(c)(1)...................  Yes
Sec.  63.8(c)(2)...................  Yes
Sec.  63.8(c)(3)...................  Yes
Sec.  63.8(c)(4)...................  No.........................
Sec.  63.8(c)(5) through (c)(8)....  Yes
Sec.  63.8(d)......................  Yes
Sec.  63.8(e)......................  Yes........................  Subpart HHH does not specifically require
                                                                   continuous emissions monitor performance
                                                                   evaluations, however, the Administrator can
                                                                   request that one be conducted.
Sec.  63.8(f)(1) through (f)(5)....  Yes
Sec.  63.8(f)(6)...................  No.........................  Subpart HHH does not require continuous
                                                                   emissions monitoring.
Sec.  63.8(g)......................  No.........................  Subpart HHH specifies continuous monitoring
                                                                   system data reduction requirements.
Sec.  63.9(a)......................  Yes
Sec.  63.9(b)(1)...................  Yes
Sec.  63.9(b)(2)...................  Yes........................  Sources are given 1 year (rather than 120
                                                                   days) to submit this notification.
Sec.  63.9(b)(3)...................  Yes
Sec.  63.9(b)(4)...................  Yes

[[Page 141]]

 
Sec.  63.9(b)(5)...................  Yes
Sec.  63.9(c)......................  Yes
Sec.  63.9(d)......................  Yes
Sec.  63.9(e)......................  Yes
Sec.  63.9(f)......................  No.........................
Sec.  63.9(g)......................  Yes
Sec.  63.9(h)(1) through (h)(3)....  Yes
Sec.  63.9(h)(4)...................  No.........................  Section reserved.
Sec.  63.9(h)(5) and (h)(6)........  Yes
Sec.  63.9(i)......................  Yes
Sec.  63.9(j)......................  Yes
Sec.  63.10(a).....................  Yes
Sec.  63.10(b)(1)..................  Yes
Sec.  63.10(b)(2)..................  Yes
Sec.  63.10(b)(3)..................  No
Sec.  63.10(c)(1)..................  Yes
Sec.  63.10(c)(2) through (c)(4)...  No.........................  Sections reserved.
Sec.  63.10(c)(5) through (c)(8)...  Yes
Sec.  63.10(c)(9)..................  No.........................  Section reserved.
Sec.  63.10(c)(10) through (c)(15).  Yes
Sec.  63.10(d)(1)..................  Yes
Sec.  63.10(d)(2)..................  Yes
Sec.  63.10(d)(3)..................  Yes
Sec.  63.10(d)(4)..................  Yes
Sec.  63.10(d)(5)..................  Yes........................  Subpart HHH requires major sources to submit a
                                                                   startup, shutdown and malfunction report semi-
                                                                   annually.
Sec.  63.10(e)(1)..................  Yes
Sec.  63.10(e)(2)..................  Yes
Sec.  63.10(e)(3)(i)...............  Yes........................  Subpart HHH requires major sources to submit
                                                                   Periodic Reports semi-annually.
Sec.  63.10(e)(3)(i)(A)............  Yes
Sec.  63.10(e)(3)(i)(B)............  Yes
Sec.  63.10(e)(3)(i)(C)............  No.........................  Subpart HHH does not require quarterly
                                                                   reporting for excess emissions.
Sec.  63.10(e)(3)(ii) through        Yes
 (e)(3)(viii).
Sec.  63.10(f).....................  Yes
Sec.  63.11(a) and (b).............  Yes
Sec.  63.12(a) through (c).........  Yes
Sec.  63.13(a) through (c).........  Yes
Sec.  63.14(a) and (b).............  Yes
Sec.  63.15(a) and (b).............  Yes
----------------------------------------------------------------------------------------------------------------


[[Page 142]]



 Subpart III--National Emission Standards for Hazardous Air Pollutants 
                for Flexible Polyurethane Foam Production

    Source: 63 FR 53996, Oct. 7, 1998, unless otherwise noted.



Sec. 63.1290  Applicability.

    (a) The provisions of this subpart apply to each new and existing 
flexible polyurethane foam or rebond foam process that meets the 
criteria listed in paragraphs (a)(1) through (3) of this section.
    (1) Produces flexible polyurethane or rebond foam;
    (2) Emits a HAP, except as provided in paragraph (c)(2) of this 
section; and
    (3) Is located at a plant site that is a major source, as defined in 
Sec. 63.2 of subpart A.
    (b) For the purpose of this subpart, an affected source includes all 
processes meeting the criteria in paragraphs (a)(1) through (a)(3) of 
this section that are located at a contiguous plant site, with the 
exception of those processes listed in paragraph (c) of this section.
    (c) A process meeting one of the following criteria listed in 
paragraphs (c)(1) through (3) of this section shall not be subject to 
the provisions of this subpart:
    (1) A process exclusively dedicated to the fabrication of flexible 
polyurethane foam;
    (2) A research and development process; or
    (3) A slabstock flexible polyurethane foam process at a plant site 
where the total amount of HAP, excluding diisocyanate reactants, used 
for slabstock foam production and foam fabrication is less than or equal 
to five tons per year, provided that slabstock foam production and foam 
fabrication processes are the only processes at the plant site that emit 
HAP. The amount of non-diisocyanate HAP used, HAPused, shall 
be calculated using Equation 1. Owners or operators of slabstock foam 
processes exempt from the regulation in accordance with this paragraph 
shall maintain records to verify that total non-diisocyanate HAP use at 
the plant site is less than 5 tons per year (4.5 megagrams per year).
[GRAPHIC] [TIFF OMITTED] TR07OC98.012

Where,
HAPused = amount of HAP, excluding diisocyanate reactants, 
used at the plant site for slabstock foam production and foam 
fabrication, tons per year
VOLABA,i = volume of HAP ABA i used at the facility, gallons 
per year
DABA,i = density of HAP ABA i, pounds per gallon
m = number of HAP ABAs used
VOLclean,j = volume of HAP used as an equipment cleaner, 
gallons per year
Dclean,j = density of HAP equipment cleaner j, pounds per 
gallon
WTHAPclean,k = HAP content of equipment cleaner j, weight 
percent
n = number of HAP equipment cleaners used
VOLadh,k = volume of adhesive k, gallons per year
Dadh,k = density of adhesive k, pounds per gallon
WTHAPadh,k = HAP content of adhesive k, weight percent
o = number of adhesives used



Sec. 63.1291  Compliance schedule.

    (a) Existing affected sources shall be in compliance with all 
provisions of this subpart no later than October 8, 2001.
    (b) New or reconstructed affected sources shall be in compliance 
with all provisions of this subpart upon initial startup.

[[Page 143]]



Sec. 63.1292  Definitions.

    All terms used in this subpart shall have the meaning given them in 
the Act, in subpart A of this part, and in this section. If a term is 
defined in subpart A and in this section, it shall have the meaning 
given in this section for purposes of this subpart.
    Auxiliary blowing agent, or ABA, means a low-boiling point liquid 
added to assist foaming by generating gas beyond that resulting from the 
isocyanate-water reaction.
    Breakthrough means that point in the adsorption step when the mass 
transfer zone (i.e., the section of the carbon bed where the HAP is 
removed from the carrier gas stream) first reaches the carbon bed outlet 
as the mass transfer zone moves down the bed in the direction of flow. 
The breakthrough point is characterized by the beginning of a sharp 
increase in the outlet HAP or organic compound concentration.
    Calibrate means to verify the accuracy of a measurement device 
against a known standard. For the purpose of this subpart, there are two 
levels of calibration. The initial calibration includes the verification 
of the accuracy of the device over the entire operating range of the 
device. Subsequent calibrations can be conducted for a point or several 
points in a limited range of operation that represents the most common 
operation of the device.
    Canned motor pump means a pump with interconnected cavity housings, 
motor rotors, and pump casing. In a canned motor pump, the motor 
bearings run in the process liquid and all seals are eliminated.
    Carbon adsorption system means a system consisting of a tank or 
container that contains a specific quantity of activated carbon. For the 
purposes of this subaprt, a carbon adsorption system is used as a 
control device for storage vessels. Typically, the spent carbon bed does 
not undergo regeneration, but is replaced.
    Connector means flanged, screwed, or other joined fittings used to 
connect two pipe lines or a pipe line and a piece of equipment. A common 
connector is a flange. Joined fittings welded completely around the 
circumference of the interface are not considered to be connectors for 
the purposes of this subpart.
    Cured foam means flexible polyurethane foam with fully developed 
physical properties. A period of 12 to 24 hours from pour is typically 
required to completely cure foam, although mechanical or other devices 
are sometimes used to accelerate the curing process.
    Curing area means the area in a slabstock foam production facility 
where foam buns are allowed to fully develop physical properties.
    Diaphragm pump means a pump where the driving member is a flexible 
diaphragm made of metal, rubber, or plastic. In a diaphragm pump, there 
is no packing or seals that are exposed to the process liquid.
    Diisocyanate means a compound containing two isocyanate groups per 
molecule. The most common diisocyanate compounds used in the flexible 
polyurethane foam industry are toluene diisocyanate (TDI) and methylene 
diphenyl diisocyanate (MDI).
    Flexible polyurethane foam means a flexible cellular polymer 
containing urea and carbamate linkages in the chain backbone produced by 
reacting a diisocyanate, polyol, and water. Flexible polyurethane foams 
are open-celled, permit the passage of air through the foam, and possess 
the strength and flexibility to allow repeated distortion or compression 
under stress with essentially complete recovery upon removal of the 
stress.
    Flexible polyurethane foam process means the equipment used to 
produce a flexible polyurethane foam product. For the purpose of this 
subpart, the flexible polyurethane foam process includes raw material 
storage; production equipment and associated piping, ductwork, etc.; and 
curing and storage areas.
    Foam fabrication process means an operation for cutting or bonding 
flexible polyurethane foam pieces together or to other substrates.
    Grade of foam means foam with a distinct combination of indentation 
force deflection (IFD) and density values.
    HAP ABA means methylene chloride, or any other HAP compound used as 
an auxiliary blowing agent.

[[Page 144]]

    HAP-based means to contain 5 percent (by weight) or more of HAP. 
This applies to equipment cleaners (and mixhead flushes) and mold 
release agents. The concentration of HAP may be determined using EPA 
test method 18, material safety data sheets, or engineering 
calculations.
    High-pressure mixhead means a mixhead where mixing is achieved by 
impingement of the high pressure streams within the mixhead.
    Indentation Force Deflection (IFD) means a measure of the load 
bearing capacity of flexible polyurethane foam. IFD is generally 
measured as the force (in pounds) required to compress a 50 square inch 
circular indentor foot into a four inch thick sample, typically 15 
inches square or larger, to 25 percent of the sample's initial height.
    In diisocyanate service means a piece of equipment that contains or 
contacts a diisocyanate.
    In HAP ABA service means a piece of equipment that contains or 
contacts a HAP ABA.
    Initial startup means the first time a new or reconstructed affected 
source begins production of flexible polyurethane foam.
    Isocyanate means a reactive chemical grouping composed of a nitrogen 
atom bonded to a carbon atom bonded to an oxygen atom; or a chemical 
compound, usually organic, containing one or more isocyanate groups.
    Magnetic drive pump means a pump where an externally-mounted magnet 
coupled to the pump motor drives the impeller in the pump casing. In a 
magnetic drive pump, no seals contact the process fluid.
    Metering pump means a pump used to deliver reactants, ABA, or 
additives to the mixhead.
    Mixhead means a device that mixes two or more component streams 
before dispensing foam producing mixture to the desired container.
    Molded flexible polyurethane foam means a flexible polyurethane foam 
that is produced by shooting the foam mixture into a mold of the desired 
shape and size.
    Mold release agent means any material which, when applied to the 
mold surface, serves to prevent sticking of the foam part to the mold.
    Plant site means all contiguous or adjoining property that is under 
common control, including properties that are separated only by a road 
or other public right-of-way. Common control includes properties that 
are owned, leased, or otherwise operated by the same entity, parent 
entity, subsidiary, or any combination thereof.
    Polyol, for the purpose of this subpart, means a polyether or 
polyester polymer with more than one reactive hydroxyl group attached to 
the molecule.
    Rebond foam means the foam resulting from a process of adhering 
small particles of foam (usually scrap or recycled foam) together to 
make a usable cushioning product. Various adhesives and bonding 
processes are used. A typical application for rebond foam is for carpet 
underlay.
    Rebond foam process means the equipment used to produce a rebond 
foam product. For the purpose of this subpart, the rebond foam process 
includes raw material storage; production equipment and associated 
piping, ductwork, etc.; and curing and storage areas.
    Reconstructed source means an affected source undergoing 
reconstruction, as defined in subpart A. For the purposes of this 
subpart, process modifications made to reduce HAP ABA emissions to meet 
the existing source requirements of this subpart shall not be counted in 
determining whether or not a change or replacement meets the definition 
of reconstruction.
    Recovery device means an individual unit of equipment capable of and 
used for the purpose of recovering chemicals for use, reuse, or sale. 
Recovery devices include, but are not limited to, carbon adsorbers, 
absorbers, and condensers.
    Research and development process means a laboratory or pilot plant 
operation whose primary purpose is to conduct research and development 
into new processes and products, where the operations are under the 
close supervision of technically trained personnel, and which is not 
engaged in the manufacture of products for commercial sale except in a 
de minimis manner.
    Run of foam means a continuous production of foam, which may consist 
of several grades of foam.

[[Page 145]]

    Sealless pump means a canned-motor pump, diaphragm pump, or magnetic 
drive pump, as defined in this section.
    Slabstock flexible polyurethane foam means flexible polyurethane 
foam that is produced in large continuous buns that are then cut into 
the desired size and shape.
    Slabstock flexible polyurethane foam production line includes all 
portions of the flexible polyurethane foam process from the mixhead to 
the point in the process where the foam is completely cured.
    Storage vessel means a tank or other vessel that is used to store 
diisocyanate or HAP ABA for use in the production of flexible 
polyurethane foam. Storage vessels do not include vessels with 
capacities smaller than 38 cubic meters (or 10,000 gallons).
    Transfer pump means all pumps used to transport diisocyanate or HAP 
ABA that are not metering pumps.
    Transfer vehicle means a railcar, tank truck, or other vehicle used 
to transport HAP ABA to the flexible polyurethane foam facility.



Sec. 63.1293  Standards for slabstock flexible polyurethane foam production.

    Each owner or operator of a new or existing slabstock affected 
source shall comply with Sec. 63.1294 and either paragraph (a) or (b) of 
this section:
    (a) The emission point specific limitations in Secs. 63.1295 through 
63.1298; or
    (b) For sources that use no more than one HAP as an ABA and an 
equipment cleaner, the source-wide emission limitation in Sec. 63.1299.



Sec. 63.1294  Standards for slabstock flexible polyurethane foam production--diisocyanate emissions.

    Each new and existing slabstock affected source shall comply with 
the provisions of this section.
    (a) Diisocyanate storage vessels. Diisocyanate storage vessels shall 
be equipped with either a system meeting the requirements in paragraph 
(a)(1) of this section, or a carbon adsorption system meeting the 
requirements of paragraph (a)(2) of this section.
    (1) The storage vessel shall be equipped with a vapor return line 
from the storage vessel to the tank truck or rail car that is connected 
during unloading.
    (i) During each unloading event, the vapor return line shall be 
inspected for leaks by visual, audible, or any other detection method.
    (ii) When a leak is detected, it shall be repaired as soon as 
practicable, but not later than the subsequent unloading event.
    (2) The storage vessel shall be equipped with a carbon adsorption 
system, meeting the monitoring requirements of Sec. 63.1303(a), that 
routes displaced vapors through activated carbon before being discharged 
to the atmosphere. The owner or operator shall replace the existing 
carbon with fresh carbon upon indication of breakthrough before the next 
unloading event.
    (b) Transfer pumps in diisocyanate service. Each transfer pump in 
diisocyanate service shall meet the requirements of paragraph (b)(1) or 
(b)(2) of this section.
    (1) The pump shall be a sealless pump; or
    (2) The pump shall be a submerged pump system meeting the 
requirements in paragraphs (b)(2)(i) through (iii) of this section.
    (i) The pump shall be completely immersed in bis(2-
ethylhexyl)phthalate (DEHP, CAS #118-81-7), 2(methyloctyl)phthalate 
(DINP, CAS #68515-48-0), or another neutral oil.
    (ii) The pump shall be visually monitored weekly to detect leaks,
    (iii) When a leak is detected, it shall be repaired in accordance 
with the procedures in paragraphs (b)(2)(iii)(A) and (B) of this 
section, except as provided in paragraph (d) of this section.
    (A) The leak shall be repaired as soon as practicable, but not later 
than 15 calendar days after it is detected.
    (B) A first attempt at repair shall be made no later than 5 calendar 
days after the leak is detected. First attempts at repair include, but 
are not limited to, the following practices where practicable:
    (1) Tightening of packing gland nuts.
    (2) Ensuring that the seal flush is operating at design pressure and 
temperature.
    (c) Other components in diisocyanate service. If evidence of a leak 
is found by

[[Page 146]]

visual, audible, or any other detection method, it shall be repaired as 
soon as practicable, but not later than 15 calendar days after it is 
detected, except as provided in paragraph (d) of this section. The first 
attempt at repair shall be made no later than 5 calendar days after each 
leak is detected.
    (d) Delay of repair. (1) Delay of repair of equipment for which 
leaks have been detected is allowed for equipment that is isolated from 
the process and that does not remain in diisocyanate service.
    (2) Delay of repair for valves and connectors is also allowed if:
    (i) The owner or operator determines that diisocyanate emissions of 
purged material resulting from immediate repair are greater than the 
fugitive emissions likely to result from delay of repair, and
    (ii) The purged material is collected and destroyed or recovered in 
a control device when repair procedures are effected.
    (3) Delay of repair for pumps is also allowed if repair requires 
replacing the existing seal design with a sealless pump, and repair is 
completed as soon as practicable, but not later than 6 months after the 
leak was detected.



Sec. 63.1295  Standards for slabstock flexible polyurethane foam production--HAP ABA storage vessels.

    Each owner or operator of a new or existing slabstock affected 
source complying with the emission point specific limitation option 
provided in Sec. 63.1293(a) shall control HAP ABA storage vessels in 
accordance with the provisions of this section.
    (a) Each HAP ABA storage vessel shall be equipped with either a 
vapor balance system meeting the requirements in paragraph (b) of this 
section, or a carbon adsorption system meeting the requirements of 
paragraph (c) of this section.
    (b) The storage vessel shall be equipped with a vapor balance 
system. The owner or operator shall ensure that the vapor return line 
from the storage vessel to the tank truck or rail car is connected 
during unloading.
    (1) During each unloading event, the vapor return line shall be 
inspected for leaks by visual, audible, olfactory, or any other 
detection method.
    (2) When a leak is detected, it shall be repaired as soon as 
practicable, but not later than the subsequent unloading event.
    (c) The storage vessel shall be equipped with a carbon adsorption 
system, meeting the monitoring requirements of Sec. 63.1303(a), that 
routes displaced vapors through activated carbon before discharging to 
the atmosphere. The owner or operator shall replace the existing carbon 
with fresh carbon upon indication of breakthrough before the next 
unloading event.



Sec. 63.1296  Standards for slabstock flexible polyurethane foam production--HAP ABA equipment leaks.

    Each owner or operator of a new or existing slabstock affected 
source complying with the emission point specific limitation option 
provided in Sec. 63.1293(a) shall control HAP ABA emissions from leaks 
from transfer pumps, valves, connectors, pressure-relief valves, and 
open-ended lines in accordance with the provisions in this section.
    (a) Pumps. Each pump in HAP ABA service shall be controlled in 
accordance with either paragraph (a)(1) or (a)(2) of this section.
    (1) The pump shall be a sealless pump, or
    (2) Each pump shall be monitored for leaks in accordance with 
paragraphs (a)(2)(i) and (ii) of this section. Leaks shall be repaired 
in accordance with paragraph (a)(2)(iii) of this section.
    (i) Each pump shall be monitored quarterly to detect leaks by the 
method specified in Sec. 63.1304(a). If an instrument reading of 10,000 
parts per million (ppm) or greater is measured, a leak is detected.
    (ii) Each pump shall be checked by visual inspection each calendar 
week for indications of liquids dripping from the pump seal. If there 
are indications of liquids dripping from the pump seal, a leak is 
detected.
    (iii) When a leak is detected, it shall be repaired in accordance 
with the procedures in paragraphs (a)(2)(iii)(A) and (B) of this 
section, except as provided in paragraph (f) of this section.

[[Page 147]]

    (A) The leak shall be repaired as soon as practicable, but not later 
than 15 calendar days after it is detected.
    (B) A first attempt at repair shall be made no later than 5 calendar 
days after the leak is detected. First attempts at repair include, but 
are not limited to, the following practices, where practicable:
    (1) Tightening of packing gland nuts.
    (2) Ensuring that the seal flush is operating at design pressure and 
temperature.
    (b) Valves. Each valve in HAP ABA service shall be monitored for 
leaks in accordance with paragraph (b)(1) of this section, except as 
provided in paragraphs (b)(3) and (4) of this section. Leaks shall be 
repaired in accordance with paragraph (b)(2) of this section.
    (1) Each valve shall be monitored quarterly to detect leaks by the 
method specified in Sec. 63.1304(a). If an instrument reading of 10,000 
parts per million or greater is measured, a leak is detected.
    (2) When a leak is detected, the owner or operator shall repair the 
leak in accordance with the procedures in paragraphs (b)(2)(i) and (ii) 
of this section, except as provided in paragraph (f) of this section.
    (i) The leak shall be repaired as soon as practicable, but not later 
than 15 calendar days after it is detected.
    (ii) A first attempt at repair shall be made no later than 5 
calendar days after the leak is detected. First attempts at repair 
include, but are not limited to, the following practices where 
practicable:
    (A) Tightening of bonnet bolts;
    (B) Replacement of bonnet bolts;
    (C) Tightening of packing gland nuts; and
    (D) Injection of lubricant into lubricated packing.
    (3) Any valve that is designated as an unsafe-to-monitor valve is 
exempt from the requirements of paragraphs (b)(1) and (2) of this 
section if:
    (i) The owner or operator of the valve determines that the valve is 
unsafe to monitor because monitoring personnel would be exposed to an 
immediate danger as a consequence of complying with paragraphs (b)(1) 
and (2) of this section; and
    (ii) The owner or operator of the valve has a written plan that 
requires monitoring of the valve as frequently as practicable during 
safe-to-monitor times. The plan shall also include requirements for 
repairing leaks as soon as possible after detection.
    (iii) The owner or operator shall monitor the unsafe-to-monitor 
valve in accordance with the written plan, and
    (iv) The owner or operator shall repair leaks in accordance with the 
written plan.
    (4) Any valve that is designated as a difficult-to-monitor valve is 
exempt from the requirements of paragraphs (b)(1) and (2) of this 
section if:
    (i) The owner or operator of the valve determines that the valve 
cannot be monitored without elevating the monitoring personnel more than 
2 meters above a support surface or it is not accessible at any time in 
a safe manner;
    (ii) The process within which the valve is located is an existing 
source, or the process within which the valve is located is a new source 
that has less than 3 percent of the total number of valves designated as 
difficult to monitor; and
    (iii) The owner or operator of the valve develops a written plan 
that requires monitoring of the valve at least once per calendar year. 
The plan shall also include requirements for repairing leaks as soon as 
possible after detection.
    (iv) The owner or operator shall monitor the difficult-to-monitor 
valve in accordance with the written plan, and
    (v) The owner or operator shall repair leaks in accordance with the 
written plan.
    (c) Connectors. Each connector in HAP ABA service shall be monitored 
for leaks in accordance with paragraph (c)(1) of this section, except as 
provided in paragraph (c)(3) of this section. Leaks shall be repaired in 
accordance with (c)(2) of this section, except as provided in paragraph 
(c)(4) of this section.
    (1) Connectors shall be monitored at the times specified in 
paragraphs (c)(1)(i) through (iii) of this section to detect leaks by 
the method specified in Sec. 63.1304(a). If an instrument reading of 
10,000 ppm or greater is measured, a leak is detected.

[[Page 148]]

    (i) Each connector shall be monitored annually, and
    (ii) Each connector that has been opened or has otherwise had the 
seal broken shall be monitored for leaks within the first 3 months after 
being returned to HAP ABA service.
    (iii) If a leak is detected, the connector shall be monitored for 
leaks in accordance with paragraph (c)(1) of this section within the 
first 3 months after its repair.
    (2) When a leak is detected, it shall be repaired in accordance with 
the procedures in paragraphs (c)(2)(i) and (ii) of this section, except 
as provided in paragraph (c)(4) and paragraph (f) of this section.
    (i) The leak shall be repaired as soon as practicable, but no later 
than 15 calendar days after the leak is detected.
    (ii) A first attempt at repair shall be made no later than 5 
calendar days after the leak is detected.
    (3) Any connector that is designated as an unsafe-to-monitor 
connector is exempt from the requirements of paragraph (c)(1) of this 
section if:
    (i) The owner or operator determines that the connector is unsafe to 
monitor because personnel would be exposed to an immediate danger as a 
result of complying with paragraph (c)(1) of this section; and
    (ii) The owner or operator has a written plan that requires 
monitoring of the connector as frequently as practicable during safe-to-
monitor periods.
    (4) Any connector that is designated as an unsafe-to-repair 
connector is exempt from the requirements of paragraph (c)(2) of this 
section if:
    (i) The owner or operator determines that repair personnel would be 
exposed to an immediate danger as a consequence of complying with 
paragraph (c)(2) of this section; and
    (ii) The connector will be repaired as soon as practicable, but not 
later than 6 months after the leak was detected.
    (d) Pressure-relief devices. Each pressure-relief device in HAP ABA 
service shall be monitored for leaks in accordance with paragraph (d)(1) 
of this section. Leaks shall be repaired in accordance with paragraph 
(d)(2) of this section.
    (1) Each pressure-relief device in HAP ABA service shall be 
monitored within 5 calendar days by the method specified in 
Sec. 63.1304(a) if evidence of a potential leak is found by visual, 
audible, olfactory, or any other detection method. If an instrument 
reading of 10,000 ppm or greater is measured, a leak is detected.
    (2) When a leak is detected, the leak shall be repaired as soon as 
practicable, but not later than 15 calendar days after it is detected, 
except as provided in paragraph (f) of this section. The owner or 
operator shall make a first attempt at repair no later than 5 calendar 
days after the leak is detected.
    (e) Open-ended valves or lines. (1)(i) Each open-ended valve or line 
in HAP ABA service shall be equipped with a cap, blind flange, plug, or 
a second valve, except as provided in paragraph (e)(4) of this section.
    (ii) The cap, blind flange, plug, or second valve shall seal the 
open end at all times except during operations requiring process fluid 
flow through the open-ended valve or line, or during maintenance or 
repair.
    (2) Each open-ended valve or line equipped with a second valve shall 
be operated in a manner such that the valve on the process fluid end is 
closed before the second valve is closed.
    (3) When a double block and bleed system is being used, the bleed 
valve or line may remain open during operations that require venting the 
line between the block valves but shall comply with paragraph (e)(1) of 
this section at all other times.
    (4) Open-ended valves or lines in an emergency shutdown system which 
are designed to open automatically in the event of a process upset are 
exempt from the requirements of paragraphs (e)(1), (2), and (3) of this 
section.
    (f) Delay of repair. (1) Delay of repair of equipment for which 
leaks have been detected is allowed for equipment that is isolated from 
the process and that does not remain in HAP ABA service.
    (2) Delay of repair for valves and connectors is also allowed if:
    (i) The owner or operator determines that emissions of purged 
material resulting from immediate repair are greater than the fugitive 
emissions likely to result from delay of repair, and

[[Page 149]]

    (ii) The purged material is collected and destroyed or recovered in 
a control device when repair procedures are effected.
    (3) Delay of repair for pumps is also allowed if repair requires 
replacing the existing seal design with a sealless pump, and repair is 
completed as soon as practicable, but not later than 6 months after the 
leak was detected.



Sec. 63.1297  Standards for slabstock flexible polyurethane foam production--HAP ABA emissions from the production line.

    (a) Each owner or operator of a new or existing slabstock affected 
source complying with the emission point specific limitation option 
provided in Sec. 63.1293(a)(1) shall control HAP ABA emissions from the 
slabstock polyurethane foam production line in accordance with the 
provisions in this section. Compliance shall be determined on a rolling 
annual basis as described in paragraph (a)(1) of this section. As an 
alternative, the owner or operator can determine compliance on a monthly 
basis, as described in paragraph (a)(2) of this section.
    (1) Rolling annual compliance. In determining compliance on a 
rolling annual basis, actual HAP ABA emissions shall be compared to 
allowable HAP ABA emissions for each consecutive 12-month period. The 
allowable HAP ABA emission level shall be calculated based on the 
production for the 12-month period, resulting in a potentially different 
allowable level for each 12-month period. Compliance shall be determined 
each month for the previous 12-month period. The compliance requirements 
are provided in paragraph (b) of this section.
    (2) Monthly compliance alternative. As an alternative to determining 
compliance on a rolling annual basis, an owner or operator can determine 
compliance by comparing actual HAP ABA emissions to allowable HAP ABA 
emissions for each month. The allowable HAP ABA emission level shall be 
calculated based on the production for the month, resulting in a 
potentially different allowable level each month. The requirements for 
this monthly compliance alternative are provided in paragraph (c) of 
this section.
    (3) Each owner or operator electing to change between the compliance 
methods described under paragraphs (a)(1) and (a)(2) of this section 
shall notify the Administrator no later than 180 calendar days prior to 
the change.
    (b) Rolling annual compliance. At each slabstock foam production 
source complying with the rolling annual compliance provisions described 
in paragraph (a)(1) of this section, actual HAP ABA emissions shall not 
exceed the allowable HAP ABA emission level for a consecutive 12-month 
period. The actual HAP ABA emission level for a consecutive 12-month 
period shall be determined using the procedures in paragraph (b)(1) of 
this section, and the allowable HAP ABA emission level for the 
corresponding 12-month period shall be calculated in accordance with 
paragraph (b)(2) of this section.
    (1) The actual HAP ABA emissions for a 12-month period shall be 
calculated as the sum of actual monthly HAP ABA emissions for each of 
the individual 12 months in the period. Actual monthly HAP ABA emissions 
shall be equal to the amount of HAP ABA added to the slabstock foam 
production line at the mixhead, determined in accordance with 
Sec. 63.1303(b), unless a recovery device is used. Slabstock foam 
production sources using recovery devices to reduce HAP ABA emissions 
shall determine actual monthly HAP ABA emissions using the procedures in 
paragraph (e) of this section.
    (2) The allowable HAP ABA emissions for a consecutive 12-month 
period shall be calculated as the sum of allowable monthly HAP ABA 
emissions for each of the individual 12 months in the period. Allowable 
HAP ABA emissions for each individual month shall be calculated using 
Equation 2.
[GRAPHIC] [TIFF OMITTED] TR07OC98.004


[[Page 150]]


Where:
emissallow,month = Allowable HAP ABA emissions from the 
slabstock foam production source for the month, pounds.
m = Number of slabstock foam production lines.
polyoli = Amount of polyol used in the month in the 
production of foam grade i on foam production line j, determined in 
accordance with paragraph (b)(3) of this section, pounds.
n = Number of foam grades produced in the month on foam production line 
j.
limiti = HAP ABA formulation limit for foam grade i, parts 
HAP ABA per 100 parts polyol. The HAP ABA formulation limits are 
determined in accordance with paragraph (d) of this section.
    (3) The amount of polyol used for specific foam grades shall be 
based on the amount of polyol added to the slabstock foam production 
line at the mixhead, determined in accordance with the provisions of 
Sec. 63.1303(b).
    (c) Monthly compliance alternative. At each slabstock foam 
production source complying with the monthly compliance alternative 
described in paragraph (a)(2) of this section, actual HAP ABA emissions 
shall not exceed the corresponding allowable HAP ABA emission level for 
the same month. The actual monthly HAP ABA emission level shall be 
determined using the procedures in paragraph (c)(1) of this section, and 
the allowable monthly HAP ABA emission level shall be calculated in 
accordance with paragraph (c)(2) of this section.
    (1) The actual monthly HAP ABA emissions shall be equal to the 
amount of HAP ABA added to the slabstock foam production line at the 
mixhead, determined in accordance with Sec. 63.1303(b), unless a 
recovery device is used. Slabstock foam production sources using 
recovery devices to reduce HAP ABA emissions shall determine actual 
monthly HAP ABA emissions using the procedures in paragraph (e) of this 
section.
    (2) The allowable HAP ABA emissions for the month shall be 
determined in accordance with Equation 2 of this section.
    (d) HAP ABA formulation limitations. For each grade, the HAP ABA 
formulation limitation shall be determined in accordance with paragraphs 
(d)(1) through (d)(3) of this section. For any grade, the owner or 
operator may designate zero as the HAP ABA formulation limitation and 
not determine the HAP ABA formulation limitation in accordance with 
paragraphs (d)(1) through (d)(3) of this section.
    (1) For existing sources, the HAP ABA formulation limitation for 
each grade of slabstock foam produced shall be determined using Equation 
3 of this section. Zero shall be the formulation limitation for any 
grade of foam where the result of the formulation limitation equation 
(Equation 3) is negative (i.e., less than zero).
[GRAPHIC] [TIFF OMITTED] TR07OC98.005

Where:
ABAlimit= HAP ABA formulation limitation, parts HAP ABA 
allowed per hundred parts polyol (pph).
IFD = Indentation force deflection, pounds.
DEN = Density, pounds per cubic foot.
    (2) For new sources, the HAP ABA formulation limitation for each 
grade of slabstock foam produced shall be determined as described in 
paragraphs (d)(2)(i) through (d)(2)(iv) of this section and in Table 1 
of this subpart.
    (i) For each foam grade with a density of 0.95 pounds per cubic foot 
or less, the HAP ABA formulation limitation shall be determined using 
Equation 3. Zero shall be the formulation limitation for any grade of 
foam where the result of the formulation limitation equation (Equation 3 
of this section) is negative (i.e., less than zero).

[[Page 151]]

    (ii) For each foam grade with a density of 1.4 pounds per cubic foot 
or less, and an IFD of 15 pounds or less, the HAP ABA formulation 
limitation shall be determined using Equation 3.
    (iii) For each foam grade with a density greater than 0.95 pounds 
per cubic foot and an IFD greater than 15 pounds, the HAP ABA 
formulation limitation shall be zero.
    (iv) For each foam grade with a density greater than 1.40 pounds per 
cubic foot, the HAP ABA formulation limitation shall be zero.
    (3) With the exception of those grades for which the owner or 
operator has designated zero as the HAP ABA formulation limitation, the 
IFD and density for each foam grade shall be determined in accordance 
with Sec. 63.1304(b) and recorded in accordance with 
Sec. 63.1307(c)(1)(i)(B) or Sec. 63.1307(c)(2)(i)(B) within 10 working 
days of the production of the foam.
    (e) Compliance using recovery devices. If a recovery device is used 
to comply with paragraphs (b) or (c) of this section, the owner or 
operator shall determine the allowable HAP ABA emissions for each month 
using Equation 2 in paragraph (b)(2) of this section, and the actual 
monthly HAP ABA emissions in accordance with paragraph (e)(1) of this 
section. The owner or operator shall also comply with the provisions of 
paragraph (e)(2) of this section.
    (1) The actual monthly HAP ABA emissions shall be determined using 
Equation 4:
[GRAPHIC] [TIFF OMITTED] TR07OC98.006

Where:
Eactual = Actual HAP ABA emissions after control, pounds/
month.
Eunc = Uncontrolled HAP ABA emissions, pounds/month, 
determined in accordance with paragraph (b)(1) of this section.
HAPABArecovered = HAP ABA recovered, pounds/month, determined 
in accordance with paragraph (e)(2) of this section.
    (2) The amount of HAP ABA recovered shall be determined in 
accordance with Sec. 63.1303(c).



Sec. 63.1298  Standards for slabstock flexible polyurethane foam production--HAP emissions from equipment cleaning.

    Each owner or operator of a new or existing slabstock affected 
source complying with the emission point specific limitation option 
provided in Sec. 63.1293(a)(1) shall not use a HAP or a HAP-based 
material as an equipment cleaner.



Sec. 63.1299  Standards for slabstock flexible polyurethane foam production--source-wide emission limitation.

    Each owner or operator of a new or existing slabstock affected 
source complying with the source-wide emission limitation option 
provided in Sec. 63.1293(b) shall control HAP ABA storage and equipment 
leak emissions, HAP ABA emissions from the production line, and 
equipment cleaning HAP emissions in accordance with the provisions in 
this section. Compliance shall be determined on a rolling annual basis 
in accordance with paragraph (a) of this section. As an alternative, the 
owner or operator can determine compliance monthly, as described in 
paragraph (b) of this section.
    (a) Rolling annual compliance. Under the rolling annual compliance 
provisions, actual source-wide HAP ABA storage and equipment leak 
emissions, HAP ABA emissions from the production line, and equipment 
cleaning HAP emissions are compared to allowable source-wide emissions 
for each consecutive 12-month period. The allowable source-wide HAP 
emission level is calculated based on the production for the 12-month 
period, resulting in a potentially different allowable level for each 
12-month period. While compliance is on an annual basis, compliance 
shall be determined monthly for the preceding 12-month period. The 
actual source-wide HAP emission level for a consecutive 12-month period 
shall be determined using the procedures in

[[Page 152]]

paragraphs (c)(1) through (4) of this section, unless a recovery device 
is used. Slabstock foam production sources using recovery devices shall 
determine actual source-wide HAP emissions in accordance with paragraph 
(e) of this section. The allowable HAP emission level for a consecutive 
12-month period shall be determined using the procedures in paragraph 
(d) of this section.
    (b) Monthly compliance alternative. As an alternative to determining 
compliance on a rolling annual basis, an owner or operator can determine 
compliance by comparing actual HAP emissions to allowable HAP emissions 
for each month. The allowable source-wide emission level is calculated 
based on the production for the month, resulting in a potentially 
different allowable level each month. The actual monthly emission level 
shall be determined using the procedures in paragraphs (c)(1) through 
(3) of this section, unless a recovery device is used. Slabstock foam 
production sources using recovery devices shall determine actual source-
wide HAP emissions in accordance with paragraph (e) of this section. The 
allowable monthly HAP ABA emission level shall be determined in 
accordance with Equation 6.
    (c) Procedures for determining actual source-wide HAP emissions. The 
actual source-wide HAP ABA storage and equipment leak emissions, HAP ABA 
emissions from the production line, and equipment cleaning HAP emissions 
shall be determined using the procedures in this section. Actual source-
wide HAP emissions for each individual month shall be determined using 
the procedures specified in paragraphs (c)(1) through (3) of this 
section.
    (1) Actual source-wide HAP emissions for a month shall be determined 
using Equation 5 and the information determined in accordance with 
paragraphs (c)(2) and (3) of this section.
[GRAPHIC] [TIFF OMITTED] TR07OC98.007

Where:
PWEactual = Actual source-wide HAP ABA and equipment cleaning 
HAP emissions for a month, pounds/month.
n = Number of HAP ABA storage vessels.
STi, begin = Amount of HAP ABA in storage vessel i at the 
beginning of the month, pounds, determined in accordance with the 
procedures listed in paragraph (c)(2) of this section.
STi, end = Amount of HAP ABA in storage vessel i at the end 
of the month, pounds, determined in accordance with the procedures 
listed in paragraph (c)(2) of this section.
ADDi = Amount of HAP ABA added to storage vessel i during the 
month, pounds, determined in accordance with the procedures listed in 
paragraph (c)(3) of this section.
    (2) The amount of HAP ABA in a storage vessel shall be determined by 
monitoring the HAP ABA level in the storage vessel in accordance with 
Sec. 63.1303(d).
    (3) The amount of HAP ABA added to a storage vessel for a given 
month shall be the sum of the amounts of all individual HAP ABA 
deliveries that occur during the month. The amount of each individual 
HAP ABA delivery shall be determined in accordance with Sec. 63.1303(e).
    (4) Actual source-wide HAP emissions for each consecutive 12-month 
period shall be calculated as the sum of actual monthly source-wide HAP 
emissions for each of the individual 12 months in the period, calculated 
in accordance with paragraphs (c) (1) through (3) of this section.
    (d) Allowable source-wide HAP emissions for a consecutive 12-month 
period shall be calculated as the sum of allowable monthly source-wide 
HAP emissions for each of the individual 12 months in the period. 
Allowable

[[Page 153]]

source-wide HAP emissions for each individual month shall be calculated 
using Equation 6.
[GRAPHIC] [TIFF OMITTED] TR07OC98.008

Where:
emissallow, month = Allowable HAP ABA storage and equipment 
leak emissions, HAP ABA emissions from the production line, and 
equipment cleaning HAP emissions from the slabstock foam production 
source for the month, pounds.
m = Number of slabstock foam production lines.
polyoli = Amount of polyol used in the month in the 
production of foam grade i on foam production line j, determined in 
accordance with Sec. 63.1303(b), pounds.
n = Number of foam grades produced in the month on foam production line 
j.
limiti = HAP ABA formulation limit for foam grade i, parts 
HAP ABA per 100 parts polyol. The HAP ABA formulation limits are 
determined in accordance with Sec. 63.1297(d).
    (e) Compliance using recovery devices. If a recovery device is used 
to comply with paragraphs (a) or (b) of this section, the owner or 
operator shall determine the allowable source-wide HAP emissions for 
each month using Equation 6 in paragraph (d) of this section, and the 
actual monthly source-wide HAP emissions in accordance with paragraph 
(e)(1) of this section. The owner or operator shall also comply with the 
provisions of paragraph (e)(2) of this section.
    (1) Actual monthly source-wide HAP emissions shall be determined 
using Equation 7.
[GRAPHIC] [TIFF OMITTED] TR07OC98.009

Where:
Eactual = Actual source-wide HAP emissions after control, 
pounds/month.
Eunc = Uncontrolled source-wide HAP emissions, pounds/month, 
determined in accordance with paragraph (c) (1) through (3) of this 
section.
HAPABArecovered = HAP ABA recovered, pounds/month, determined 
in accordance with paragraph (e)(2) of this section.
    (2) The amount of HAP ABA recovered shall be determined in 
accordance with Sec. 63.1303(c).



Sec. 63.1300  Standards for molded flexible polyurethane foam production.

    Each owner or operator of a new or existing molded affected source 
shall comply with the provisions in paragraphs (a) and (b) of this 
section.
    (a) A HAP or HAP-based material shall not be used as an equipment 
cleaner to flush the mixhead, nor shall it be used elsewhere as an 
equipment cleaner in a molded flexible polyurethane foam process, with 
the following exception. Diisocyanates may be used to flush the mixhead 
and associated piping during periods of startup or maintenance, provided 
that the diisocyanate compounds are contained in a closed-loop system 
and are re-used in production.
    (b) A HAP-based mold release agent shall not be used in a molded 
flexible polyurethane foam source process.



Sec. 63.1301  Standards for rebond foam production.

    Each owner or operator of a new or existing rebond foam affected 
source

[[Page 154]]

shall comply with the provisions in paragraphs (a) and (b) of this 
section.
    (a) A HAP or HAP-based material shall not be used as an equipment 
cleaner at a rebond foam source.
    (b) A HAP-based mold release agent shall not be used in a rebond 
foam source.



Sec. 63.1302  Applicability of subpart A requirements.

    The owner or operator of an affected source shall comply with the 
applicable requirements of subpart A of this part, as specified in Table 
2 of this subpart.



Sec. 63.1303  Monitoring requirements.

    Owners and operators of affected sources shall comply with each 
applicable monitoring provision in this section.
    (a) Monitoring requirements for storage vessel carbon adsorption 
systems. Each owner or operator using a carbon adsorption system to meet 
the requirements of Sec. 63.1294(a) or Sec. 63.1295 shall monitor the 
concentration level of the HAP or the organic compounds in the exhaust 
vent stream (or outlet stream exhaust) from the carbon adsorption system 
at the frequency specified in (a)(1) or (2) of this section in 
accordance with either (a)(3) or (4) of this section.
    (1) The concentration level of HAP or organic compounds shall be 
monitored during each unloading event, or once per month during an 
unloading event if multiple unloading events occur in a month.
    (2) As an alternative to monthly monitoring, the owner or operator 
can set the monitoring frequency at an interval no greater than 20 
percent of the carbon replacement interval, which is established using a 
design analysis described below in paragraphs (a)(1)(i) through (iii) of 
this section.
    (i) The design analysis shall consider the vent stream composition, 
constituent concentration, flow rate, relative humidity, and 
temperature.
    (ii) The design analysis shall establish the outlet organic 
concentration level, the capacity of the carbon bed, and the working 
capacity of activated carbon used for the carbon bed, and
    (iii) The design analysis shall establish the carbon replacement 
interval based on the total carbon working capacity of the carbon 
adsorption system and the schedule for filling the storage vessel.
    (3) Measurements of HAP concentration shall be made using 40 CFR 
part 60, appendix A, Method 18. The measurement shall be conducted over 
at least one 5-minute interval during which the storage vessel is being 
filled.
    (4) Measurements of organic compounds shall be made using 40 CFR 
part 60, Appendix A, Method 25A. The measurement shall be conducted over 
at least one 5-minute interval during which the storage vessel is being 
filled.
    (b) Monitoring for HAP ABA and polyol added to the foam production 
line at the mixhead. (1) The owner or operator of each slabstock 
affected source shall comply with the provisions in paragraph (b)(1)(i) 
of this section, and, if applicable, the provisions of paragraph 
(b)(1)(ii) of this section. Alternatively, the owner or operator may 
comply with paragraph (b)(5) of this section.
    (i) Owners or operators of all slabstock affected sources shall 
continuously monitor the amount of polyol added at the mixhead when foam 
is being poured, in accordance with paragraphs (b)(2) through (4) of 
this section.
    (ii) Owners or operators of slabstock foam affected sources using 
the emission point specific limitation option provided in 
Sec. 63.1293(a)(1) shall continuously monitor the amount of HAP ABA 
added at the mixhead when foam is being poured, in accordance with 
paragraphs (b)(2)(ii), (b)(3), and (b)(4) of this section.
    (2) The owner or operator shall monitor either:
    (i) Pump revolutions; or
    (ii) Flow rate.
    (3) The device used to monitor the parameter from paragraph (b)(2) 
shall have an accuracy to within +/-2.0 percent of the HAP ABA being 
measured, and shall be calibrated initially, and periodically, in 
accordance with paragraph (b)(3)(i) or (ii) of this section.
    (i) For polyol pumps, the device shall be calibrated at least once 
each 6 months.

[[Page 155]]

    (ii) For HAP ABA pumps, the device shall be calibrated at least once 
each month.
    (4) Measurements must be recorded at the beginning and end of the 
production of each grade of foam within a run of foam.
    (5) As an alternative to the monitoring described in paragraphs 
(b)(2) through (4) of this section, the owner or operator may develop an 
alternative monitoring program. Alternative monitoring programs must be 
submitted to the Administrator for approval in the Precompliance Report 
as specified in Sec. 63.1306(c)(4) for existing sources or in the 
Application for approval of construction or reconstruction for new 
sources. If an owner or operator wishes to develop an alternative 
monitoring program after the compliance date, the program shall be 
submitted to the Administrator for approval before the owner or operator 
wishes to begin using the alternative program. If the Administrator does 
not notify the owner or operator of objections to the program, or any 
part of the program, within 45 days after its receipt, the program shall 
be deemed approved. Until the program is approved, the owner or operator 
of an affected source remains subject to the requirements of this 
subpart. The components of an alternative monitoring program shall 
include, at a minimum, the items listed in paragraphs (b)(5)(i) through 
(iv) of this section.
    (i) A description of the parameter to be continuously monitored when 
foam is being poured to measure the amount of HAP ABA or polyol added at 
the mixhead.
    (ii) A description of how the monitoring results will be recorded, 
and how the results will be converted into amount of HAP ABA or polyol 
delivered to the mixhead.
    (iii) Data demonstrating that the monitoring device is accurate to 
within +/-2.0 percent.
    (iv) Procedures to ensure that the accuracy of the parameter 
monitoring results is maintained. These procedures shall, at a minimum, 
consist of periodic calibration of all monitoring devices.
    (c) Recovered HAP ABA monitoring. The owner or operator of each 
slabstock affected source using a recovery device to reduce HAP ABA 
emissions shall develop and comply with a recovered HAP ABA monitoring 
and recordkeeping program. The components of these plans shall include, 
at a minimum, the items listed in paragraphs (c)(1) through (5) of this 
section. These plans must be submitted for approval in accordance with 
paragraph (c)(6) of this section.
    (1) A device, installed, calibrated, maintained, and operated 
according to the manufacturer's specifications, that indicates the 
cumulative amount of HAP ABA recovered by the solvent recovery device 
over each 1-month period. The device shall be certified by the 
manufacturer to be accurate to within +/-2.0 percent.
    (2) The location where the monitoring will occur shall ensure that 
the measurements are taken after HAP ABA has been fully recovered (i.e., 
after separation from water introduced into the HAP ABA during 
regeneration).
    (3) A description of the parameter to be monitored, and the times 
the parameter will be monitored.
    (4) Data demonstrating that the monitoring device is accurate to 
within +/-2.0 percent.
    (5) Procedures to ensure that the accuracy of the parameter 
monitoring results is maintained. These procedures shall, at a minimum, 
consist of periodic calibration of all monitoring devices.
    (6) Recovered HAP ABA monitoring and recordkeeping programs must be 
submitted to the Administrator for approval in the Precompliance Report 
as specified in Sec. 63.1306(c)(6) for existing sources or in the 
Application for approval of construction or reconstruction for new 
sources. If an owner or operator wishes to develop a recovered HAP ABA 
monitoring program after the compliance date, the program shall be 
submitted to the Administrator for approval before the owner or operator 
wishes to begin using the program. If the Administrator does not notify 
the owner or operator of objections to the program within 45 days after 
its receipt, the program shall be deemed approved. Until the program is 
approved, the owner or operator of an affected

[[Page 156]]

source remains subject to the requirements of this subpart.
    (d) Monitoring of HAP ABA in a storage vessel. The amount of HAP ABA 
in a storage vessel shall be determined weekly by monitoring the HAP ABA 
level in the storage vessel using a level measurement device that meets 
the criteria described in paragraphs (d)(1) and either (d)(2) or (d)(3) 
of this section.
    (1) The level measurement device must be calibrated initially and at 
least once per year thereafter.
    (2) With the exception of visually-read level measurement devices 
(i.e., gauge glass), the device must have either a digital or printed 
output.
    (3) If the level measurement device is a visually-read device, the 
device must be equipped with permanent graduated markings to indicate 
HAP ABA level in the storage tank.
    (e) Monitoring of HAP ABA added to a storage vessel. The amount of 
HAP ABA added to a storage vessel during a delivery shall be determined 
in accordance with either paragraphs (e)(1), (2), (3), or (4) of this 
section.
    (1) The volume of HAP ABA added to the storage vessel shall be 
determined by recording the volume in the storage vessel prior to the 
delivery and the volume after the delivery, provided that the storage 
tank level measurement device used to determine the levels meets the 
criteria in (d) of this section.
    (2) The volume of HAP ABA added to the storage vessel shall be 
determined by monitoring the flow rate using a device with an accuracy 
of  2.0 percent, and calibrated initially and at least once 
each six months thereafter.
    (3) The weight of HAP ABA added to the storage vessel shall be 
calculated as the difference of the full weight of the transfer vehicle 
prior to unloading into the storage vessel and the empty weight of the 
transfer vehicle after unloading into the storage vessel. The weight 
shall be determined using a scale meeting the requirements of either 
paragraph (e)(2)(i) or (ii) of this section.
    (i) A scale approved by the State or local agencies using the 
procedures contained in Handbook 44, Specifications, Tolerances, and 
Other Technical Requirements for Weighing and Measuring Devices 1998 
(incorporation by reference--see Sec. 63.14).
    (ii) A scale determined to be in compliance with the requirements of 
the National Institute of Standards and Technology Handbook 44 at least 
once per year by a registered scale technician.
    (4) As an alternative to the monitoring options described in 
paragraphs (e)(1) through (e)(3) of this section, the owner or operator 
may develop an alternative monitoring program. Alternative monitoring 
programs must be submitted to the Administrator for approval in the 
Precompliance Report as specified in Sec. 63.1306(c)(4) for existing 
sources or in the Application for approval of construction or 
reconstruction for new sources. If an owner or operator wishes to 
develop an alternative monitoring program after the compliance date, the 
program shall be submitted to the Administrator for approval before the 
owner or operator wishes to begin using the alternative program. If the 
Administrator does not notify the owner or operator of objections to the 
program within 45 days after its receipt, the program shall be deemed 
approved. Until the program is approved, the owner or operator of an 
affected source remains subject to the requirements of this subpart. The 
components of an alternative monitoring program shall include, at a 
minimum, the items listed in paragraphs (e)(3)(i) through (iv) of this 
section.
    (i) A description of the parameter to be monitored to determine the 
amount of HAP ABA added to the storage vessel during a delivery,
    (ii) A description of how the results will be recorded, and how the 
results will be converted into the amount of HAP ABA added to the 
storage vessel during a delivery,
    (iii) Data demonstrating that the monitoring device is accurate to 
within  2.0 percent, and
    (iv) Procedures to ensure that the accuracy of the monitoring 
measurements is maintained. These procedures shall, at a minimum, 
consist of periodic calibration of all monitoring devices.

[[Page 157]]



Sec. 63.1304  Testing requirements.

    Owners and operators of affected sources shall use the test methods 
listed in this section, as applicable, to demonstrate compliance with 
this subpart.
    (a) Test method and procedures to determine equipment leaks. 
Monitoring, as required under Sec. 63.1296, shall comply with the 
following requirements:
    (1) Monitoring shall comply with Method 21 of 40 CFR part 60, 
appendix A.
    (2) The detection instrument shall meet the performance criteria of 
Method 21 of 40 CFR part 60, appendix A, except that the instrument 
response factor criteria in section 3.1.2(a) of Method 21 shall be for 
the average composition of the source fluid, rather than for each 
individual VOC in the stream. For source streams that contain nitrogen, 
air, or other inerts which are not HAP or VOC, the average stream 
response factor shall be calculated on an inert-free basis. The response 
factor may be determined at any concentration for which monitoring for 
leaks will be conducted.
    (3) The instrument shall be calibrated before use on each day of its 
use by the procedures specified in Method 21 of 40 CFR part 60, appendix 
A.
    (4) Calibration gases shall be:
    (i) Zero air (less than 10 ppm of hydrocarbon in air); and
    (ii) A mixture of methane and air at a concentration of 
approximately, 1,000 ppm for all transfer pumps; and 500 ppm for all 
other equipment, except as provided in paragraph (a)(4)(iii) of this 
section.
    (iii) The instrument may be calibrated at a higher methane 
concentration (up to 2,000 ppm) than the leak definition concentration 
for a specific piece of equipment for monitoring that piece of 
equipment. If the monitoring instrument's design allows for multiple 
calibration gas concentrations, then the lower concentration calibration 
gas shall be no higher than 2,000 ppm methane and the higher 
concentration calibration gas shall be no higher than 10,000 ppm 
methane.
    (5) Monitoring shall be performed when the equipment is in HAP ABA 
service, in use with an acceptable surrogate volatile organic compound 
which is not a HAP ABA, or is in use with any other detectable gas or 
vapor.
    (6) If no instrument is available onsite that will meet the 
performance criteria specified in section 3.1.2(a) of Method 21 of 40 
CFR Part 60, appendix A, the readings from an available instrument may 
be adjusted by multiplying by the average response factor for the 
stream.
    (b) Test method to determine foam properties. The IFD and density of 
each grade of foam produced during each run of foam shall be determined 
using ASTM D3574-91, Standard Test Methods for Flexible Cellular 
Materials--Slab, Bonded, and Molded (incorporation by reference--see 
Sec. 63.14), using a sample of foam cut from the center of the foam bun. 
The maximum sample size for which the IFD and density is determined 
shall not be larger than 24 inches by 24 inches by 4 inches. For grades 
of foam where the owner or operator has designated the HAP ABA 
formulation limitation as zero, the owner or operator is not required to 
determine the IFD and density in accordance with this paragraph.



Sec. 63.1305  Alternative means of emission limitation.

    An owner or operator of an affected source may request approval to 
use an alternative means of emission limitation, following the 
procedures in this section.
    (a) The owner or operator can request approval to use an alternative 
means of emission limitation in the precompliance report for existing 
sources, the application for construction or reconstruction for new 
sources, or at any time.
    (b) This request shall include a complete description of the 
alternative means of emission limitation.
    (c) Each owner or operator applying for permission to use an 
alternative means of emission limitation under Sec. 63.6(g) shall be 
responsible for collecting and verifying data to demonstrate the 
emission reduction achieved by the alternative means of emission 
limitation.
    (d) Use of the alternative means of emission limitation shall not 
begin

[[Page 158]]

until approval is granted by the Administrator in accordance with 
Sec. 63.6(g).



Sec. 63.1306  Reporting requirements.

    Owners and operators of affected sources shall comply with each 
applicable reporting provision in this section.
    (a) Initial notification. Each affected source shall submit an 
initial notification in accordance with Sec. 63.9(b).
    (b) Application for approval of construction or reconstruction. Each 
owner or operator shall submit an application for approval of 
construction or reconstruction in accordance with the provisions of 
Sec. 63.5(d).
    (c) Precompliance report. Each slabstock affected source shall 
submit a precompliance report no later than 12 months before the 
compliance date. This report shall contain the information listed in 
paragraphs (c)(1) through (c)(8) of this section, as applicable.
    (1) Whether the source will comply with the emission point specific 
limitations described in Sec. 63.1293(a), or with the source-wide 
emission limitation described in Sec. 63.1293(b).
    (2) For a source complying with the emission point specific 
limitations, whether the source will comply on a rolling annual basis in 
accordance with Sec. 63.1297(b), or will comply with the monthly 
alternative for compliance contained in Sec. 63.1297(c).
    (3) For a source complying with the source-wide emission limitation, 
whether the source will comply on a rolling annual basis in accordance 
with Sec. 63.1299(a), or will comply with the monthly alternative for 
compliance contained in Sec. 63.1299(b).
    (4) A description of how HAP ABA and/or polyol added at the mixhead 
will be monitored. If the owner or operator is developing an alternative 
monitoring program, the alternative monitoring program containing the 
information in Sec. 63.1303(b)(5)(i) through (iv) shall be submitted.
    (5) Notification of the intent to use a recovery device to comply 
with the provisions of Sec. 63.1297 or Sec. 63.1299.
    (6) For slabstock affected sources complying with Sec. 63.1297 or 
Sec. 63.1299 using a recovery device, the continuous recovered HAP ABA 
monitoring and recordkeeping program, developed in accordance with 
Sec. 63.1303(c).
    (7) For sources complying with the source-wide emission limitation, 
a description of how the amount of HAP ABA in a storage vessel shall be 
determined.
    (8) For sources complying with the source-wide emission limitation, 
a description of how the amount of HAP ABA added to a storage vessel 
during a delivery will be monitored. If the owner or operator is 
developing an alternative monitoring program, the alternative monitoring 
program containing the information in Sec. 63.1303(e)(4)(i) through (iv) 
shall be submitted.
    (9) If the Administrator does not notify the owner or operator of 
objections to an alternative monitoring program submitted in accordance 
with (c)(4) or (c)(6) of this section, or a recovered HAP ABA monitoring 
and recordkeeping program submitted in accordance with (c)(7) of this 
section, the program shall be deemed approved 45 days after its receipt 
by the Administrator.
    (d) Notification of compliance status. Each affected source shall 
submit a notification of compliance status report no later than 180 days 
after the compliance date. For slabstock affected sources, this report 
shall contain the information listed in paragraphs (d)(1) through (3) of 
this section, as applicable. This report shall contain the information 
listed in paragraph (d)(4) of this section for molded foam processes and 
in paragraph (d)(5) for rebond foam processes.
    (1) A list of diisocyanate storage vessels, along with a record of 
the type of control utilized for each storage vessel.
    (2) For transfer pumps in diisocyanate service, a record of the type 
of control utilized for each transfer pump.
    (3) If the source is complying with the emission point specific 
limitations of Secs. 63.1294 through 63.1298, the information listed in 
paragraphs (b)(3)(i) through (iii) of this section.
    (i) A list of HAP ABA storage vessels, along with a record of the 
type of control utilized for each storage vessel.
    (ii) A list of pumps, valves, connectors, pressure-relief devices, 
and open-

[[Page 159]]

ended valves or lines in HAP ABA service.
    (iii) A list of any modifications to equipment in HAP ABA service 
made to comply with the provisions of Sec. 63.1296.
    (4) A statement that the molded foam affected source is in 
compliance with Sec. 63.1300, or a statement that molded foam processes 
at an affected source are in compliance with Sec. 63.1300.
    (5) A statement that the rebond foam affected source is in 
compliance with Sec. 63.1301, or that rebond processes at an affected 
source are in compliance with Sec. 63.1301.
    (e) Semiannual reports. Each slabstock affected source shall submit 
a report containing the information specified in paragraphs (e)(1) 
through (5) of this section semiannually no later than 60 days after the 
end of each 180 day period. The first report shall be submitted no later 
than 240 days after the date that the Notification of Compliance Status 
is due and shall cover the 6-month period beginning on the date that the 
Notification of Compliance Status Report is due.
    (1) For slabstock affected sources complying with the rolling annual 
compliance provisions of either Sec. 63.1297 or Sec. 63.1299, the 
allowable and actual HAP ABA emissions (or allowable and actual source-
wide HAP emissions) for each of the 12-month periods ending on each of 
the six months in the reporting period. This information is not required 
to be included in the initial semi-annual compliance report.
    (2) For sources complying with the monthly compliance alternative of 
either Sec. 63.1297 or Sec. 63.1299, the allowable and actual HAP ABA 
emissions (or allowable and actual source-wide HAP emissions) for each 
of the six months in the reporting period.
    (3) For sources complying with the storage vessel provisions of 
Sec. 63.1294(a) or Sec. 63.1295 using a carbon adsorption system, 
unloading events that occurred after breakthrough was detected and 
before the carbon was replaced.
    (4) Any equipment leaks that were not repaired in accordance with 
Sec. 63.1294(b)(2)(iii), Sec. 63.1294(c), Sec. 63.1296(a)(2)(iii), 
(b)(2), (b)(3)(iv), (b)(4)(v), (c)(2), (c)(4)(ii), and (d)(2).
    (5) Any leaks in vapor return lines that were not repaired in 
accordance with Sec. 63.1294(a)(1)(ii) or Sec. 63.1295(b)(2).
    (f) Other reports. (1) Change in selected emission limitation. An 
owner or operator electing to change their slabstock flexible 
polyurethane foam emission limitation (from emission point specific 
limitations to a source-wide emission limitation, or vice versa), 
selected in accordance with Sec. 63.1293, shall notify the Administrator 
no later than 180 days prior to the change.
    (2) Change in selected compliance method. An owner or operator 
changing the period of compliance for either Sec. 63.1297 or 
Sec. 63.1299 (between rolling annual and monthly) shall notify the 
Administrator no later than 180 days prior to the change.
    (g) Annual compliance certifications. Each affected source subject 
to the provisions in Secs. 63.1293 through 63.1301 shall submit a 
compliance certification annually.
    (1) The compliance certification shall be based on information 
consistent with that contained in Sec. 63.1308 of this section, as 
applicable.
    (2) A compliance certification required pursuant to a State or local 
operating permit program may be used to satisfy the requirements of this 
section, provided that the compliance certification is based on 
information consistent with that contained in Sec. 63.1308 of this 
section, and provided that the Administrator has approved the State or 
local operating permit program under part 70 of this chapter.
    (3) Each compliance certification submitted pursuant to this section 
shall be signed by a responsible official of the company that owns or 
operates the affected source.



Sec. 63.1307  Recordkeeping requirements.

    The applicable records designated in paragraphs (a) through (c) of 
this section shall be maintained by owners and operators of all affected 
sources.
    (a) Storage vessel records. (1) A list of diisocyanate storage 
vessels, along with a record of the type of control utilized for each 
storage vessel.
    (2) For each slabstock affected source complying with the emission 
point specific limitations of Secs. 63.1294 through

[[Page 160]]

63.1298, a list of HAP ABA storage vessels, along with a record of the 
type of control utilized for each storage vessel.
    (3) For storage vessels complying through the use of a carbon 
adsorption system, paragraph (a)(3)(i) or (ii), and paragraph 
(a)(3)(iii) of this section.
    (i) Records of dates and times when the carbon adsorption system is 
monitored for carbon breakthrough and the monitoring device reading, 
when the device is monitored in accordance with Sec. 63.1303(a); or
    (ii) For affected sources monitoring at an interval no greater than 
20 percent of the carbon replacement interval, in accordance with 
Sec. 63.1303(a)(2), the records listed in paragraphs (a)(3)(ii)(A) and 
(B) of this section.
    (A) Records of the design analysis, including all the information 
listed in Sec. 63.1303(a)(2)(i) through (iii), and
    (B) Records of dates and times when the carbon adsorption system is 
monitored for carbon breakthrough and the monitoring device reading.
    (iii) Date when the existing carbon in the carbon adsorption system 
is replaced with fresh carbon.
    (4) For storage vessels complying through the use of a vapor return 
line, paragraphs (a)(4)(i) through (iii) of this section.
    (i) Dates and times when each unloading event occurs and each 
inspection of the vapor return line for leaks occurs.
    (ii) Records of dates and times when a leak is detected in the vapor 
return line.
    (iii) Records of dates and times when a leak is repaired.
    (b) Equipment leak records. (1) A list of components as specified 
below in paragraphs (b)(1)(i) and (ii).
    (i) For all affected sources, a list of components in diisocyanate 
service,
    (ii) For affected sources complying with the emission point specific 
limitations of Secs. 63.1294 through 63.1298, a list of components in 
HAP ABA service.
    (2) For transfer pumps in diisocyanate service, a record of the type 
of control utilized for each transfer pump and the date of installation.
    (3) When a leak is detected as specified in Sec. 63.1294(b)(2)(ii), 
Sec. 63.1294(c), Sec. 63.1296(a)(2), (b)(1), (c)(1), and (d)(1), the 
requirements listed in paragraphs (b)(3)(i) and (ii) of this section 
apply:
    (i) Leaking equipment shall be identified in accordance with the 
requirements in paragraphs (b)(3)(i)(A) through (C) of this section.
    (A) A readily visible identification, marked with the equipment 
identification number, shall be attached to the leaking equipment.
    (B) The identification on a valve may be removed after it has been 
monitored for 2-successive quarters as specified in Sec. 63.1296(b)(1) 
and no leak has been detected during those 2 quarters.
    (C) The identification on equipment, other than a valve, may be 
removed after it has been repaired.
    (ii) The information in paragraphs (b)(2)(ii)(A) through (H) shall 
be recorded for leaking components.
    (A) The instrument and operator identification numbers and the 
equipment identification number.
    (B) The date the leak was detected and the dates of each attempt to 
repair the leak.
    (C) Repair methods applied in each attempt to repair the leak.
    (D) The words ``above leak definition'' if the maximum instrument 
reading measured by the methods specified in Sec. 63.1304(a) after each 
repair attempt is equal or greater than the leak definitions for the 
specified equipment.
    (E) The words ``repair delayed'' and the reason for the delay if a 
leak is not repaired within 15 calendar days after discovery of the 
leak.
    (F) The expected date of the successful repair of the leak if a leak 
is not repaired within 15 calendar days.
    (G) The date of successful repair of the leak.
    (H) The date the identification is removed.
    (c) HAP ABA records--(1) Emission point specific limitations--
rolling annual compliance and monthly compliance alternative records. 
Each slabstock affected source complying with the emission point 
specific limitations of Sec. 1A63.1294 through 63.1298, and the rolling 
annual compliance provisions of Sec. 63.1297(a)(1), shall maintain the 
records listed in paragraphs (c)(1)(i), (ii), (iii), and (iv) of this 
section. Each flexible polyurethane foam slabstock source complying with 
the emission point specific

[[Page 161]]

limitations of Secs. 63.1294 through 63.1298, and the monthly compliance 
alternative of Sec. 63.1297(a)(2), shall maintain the records listed in 
paragraphs (c)(1)(i), (ii), and (iv) of this section.
    (i) Daily records of the information listed below in paragraphs 
(c)(1)(i)(A) through (C) of this section.
    (A) A log of foam runs each day. For each run, the log shall include 
a list of the grades produced during the run.
    (B) Results of the density and IFD testing for each grade of foam 
produced during each run of foam, conducted in accordance with the 
procedures in Sec. 63.1304(b). The results of this testing shall be 
recorded within 10 working days of the production of the foam. For 
grades of foam where the owner or operator has designated the HAP ABA 
formulation limitation as zero, the owner or operator is not required to 
keep records of the IFD and density.
    (C) The amount of polyol added to the slabstock foam production line 
at the mixhead for each run of foam, determined in accordance with 
Sec. 63.1303(b).
    (ii) Monthly records of the information listed in paragraphs 
(c)(1)(ii)(A) through (E) of this section.
    (A) A listing of all foam grades produced during the month,
    (B) For each foam grade produced, the HAP ABA formulation 
limitation, calculated in accordance with Sec. 63.1297(d).
    (C) With the exception of those grades for which the owner or 
operator has designated zero as the HAP ABA formulation limitation, the 
total amount of polyol used in the month for each foam grade produced.
    (D) The total allowable HAP ABA emissions for the month, determined 
in accordance with Sec. 63.1297(b)(2).
    (E) The total amount of HAP ABA added to the slabstock foam 
production line at the mixhead during the month, determined in 
accordance with Sec. 63.1303(b).
    (iii) Each source complying with the rolling annual compliance 
provisions of Sec. 63.1297(b) shall maintain the records listed in 
paragraphs (c)(1)(iii)(A) and (B) of this section.
    (A) The sum of the total allowable HAP ABA emissions for the month 
and the previous 11 months.
    (B) The sum of the total actual HAP ABA emissions for the month and 
the previous 11 months.
    (iv) Records of all calibrations for each device used to measure 
polyol and HAP ABA added at the mixhead, conducted in accordance with 
Sec. 63.1303(b)(3).
    (2) Source-wide limitations--rolling annual compliance and monthly 
compliance alternative records. Each slabstock affected source complying 
with the source-wide limitations of Sec. 63.1299, and the rolling annual 
compliance provisions in Sec. 63.1299(a), shall maintain the records 
listed in paragraphs (c)(2)(i) through (c)(2)(vii) of this section. Each 
flexible polyurethane foam slabstock source complying with the source-
wide limitations of Sec. 63.1299, and the monthly compliance alternative 
of Sec. 63.1299(b), shall maintain the records listed in paragraphs 
(c)(2)(i) through (c)(2)(iii) and paragraphs (c)(2)(v) through 
(c)(2)(vii) of this section.
    (i) Daily records of the information listed in paragraphs 
(c)(2)(i)(A) through (C) of this section.
    (A) A log of foam runs each day. For each run, the log shall include 
a list of the grades produced during the run.
    (B) Results of the density and IFD testing for each grade of foam 
produced during each run of foam, conducted in accordance with the 
procedures in Sec. 63.1304(b). The results of this testing shall be 
recorded within 10 working days of the production of the foam. For 
grades of foam where the the owner or operator has designated the HAP 
ABA formulation limitation as zero, the owner or operator is not 
required to keep records of the IFD and density.
    (C) With the exception of those grades for which the owner or 
operator has designated zero as the HAP ABA formulation limitation, the 
amount of polyol added to the slabstock foam production line at the 
mixhead for each grade produced during each run of foam, determined in 
accordance with Sec. 63.1303(b).
    (ii) For sources complying with the source-wide emission limitation, 
weekly records of the storage tank level, determined in accordance with 
Sec. 63.1303(d).

[[Page 162]]

    (iii) Monthly records of the information listed below in paragraphs 
(c)(2)(iii)(A) through (E) of this section.
    (A) A listing of all foam grades produced during the month,
    (B) For each foam grade produced, the residual HAP formulation 
limitation, calculated in accordance with Sec. 63.1297(d).
    (C) With the exception of those grades for which the owner or 
operator has designated zero as the HAP ABA formulation limitation, the 
total amount of polyol used in the month for each foam grade produced.
    (D) The total allowable HAP ABA and equipment cleaning emissions for 
the month, determined in accordance with Sec. 63.1297(b)(2).
    (E) The total actual source-wide HAP ABA emissions for the month, 
determined in accordance with Sec. 63.1299(c)(1), along with the 
information listed in paragraphs (c)(2)(iii)(E)(1) and (2) of this 
section.
    (1) The amounts of HAP ABA in the storage vessel at the beginning 
and end of the month, determined in accordance with Sec. 63.1299(c)(2); 
and
    (2) The amount of each delivery of HAP ABA to the storage vessel, 
determined in accordance with Sec. 63.1299(c)(3).
    (iv) Each source complying with the rolling annual compliance 
provisions of Sec. 63.1299(a) shall maintain the records listed in 
paragraphs (c)(2)(iv)(A) and (B) of this section.
    (A) The sum of the total allowable HAP ABA and equipment cleaning 
HAP emissions for the month and the previous 11 months.
    (B) The sum of the total actual HAP ABA and equipment cleaning HAP 
emissions for the month and the previous 11 months.
    (v) Records of all calibrations for each device used to measure 
polyol added at the mixhead, conducted in accordance with 
Sec. 63.1303(b)(3).
    (vi) Records of all calibrations for each device used to measure the 
amount of HAP ABA in the storage vessel, conducted in accordance with 
Sec. 63.1303(d)(1).
    (vii) Records to verify that all scales used to measure the amount 
of HAP ABA added to the storage vessel meet the requirements of 
Sec. 63.1303(e)(3). For scales meeting the criteria of 
Sec. 63.1303(e)(3)(i), this documentation shall be in the form of 
written confirmation of the State or local approval. For scales 
complying with Sec. 63.1303(e)(3)(ii), this documentation shall be in 
the form of a report provided by the registered scale technician.
    (d) The owner or operator of each affected source complying with 
Sec. 63.1297 or Sec. 63.1299 through the use of a recovery device shall 
maintain the following records:
    (1) A copy of the recovered HAP ABA monitoring and recordkeeping 
program, developed pursuant to Sec. 63.1303(c);
    (2) Certification of the accuracy of the monitoring device,
    (3) Records of periodic calibration of the monitoring devices,
    (4) Records of parameter monitoring results, and
    (5) The amount of HAP ABA recovered each time it is measured.
    (e) The owner or operator of an affected source subject to 
Sec. 63.1298 of this subpart shall maintain a product data sheet for 
each equipment cleaner used which includes the HAP content, in kg of 
HAP/kg solids (lb HAP/lb solids).
    (f) The owner or operator of an affected source following the 
compliance methods in Sec. 63.1308(b)(1) and (c)(1) shall maintain 
records of each use of a vapor return line during unloading, of any 
leaks detected during unloading, and of repairs of leaks detected during 
unloading.
    (g) The owner or operator of an affected source subject to 
Sec. 63.1300 or Sec. 63.1301 of this subpart shall maintain a product 
data sheet for each compound other than diisocyanates used to flush the 
mixhead and associated piping during periods of startup or maintenance, 
which includes the HAP content, in kg of HAP/kg solids (lb HAP/lb 
solids), of each solvent other than diisocyanates used to flush the 
mixhead and associated piping during periods of startup or maintenance.
    (h) The owner or operator of an affected source subject to 
Sec. 63.1300 or Sec. 63.1301 of this subpart shall maintain a product 
data sheet for each mold release agent used that includes the HAP 
content, in kg of HAP/kg solids (lb

[[Page 163]]

HAP/lb solids), of each mold release agent.



Sec. 63.1308  Compliance demonstrations.

    (a) For each affected source, compliance with the requirements 
listed in paragraphs (a)(1) through (a)(2) of this section shall mean 
compliance with the requirements contained in Secs. 63.1293 through 
63.1301, absent any credible evidence to the contrary.
    (1) The requirements described in Tables 3, 4, and 5 of this 
subpart; and
    (2) The requirement to submit a compliance certification annually as 
required under Sec. 63.1306(g).
    (b) All slabstock affected sources. For slabstock affected sources, 
failure to meet the requirements contained in Sec. 63.1294 shall be 
considered a violation of this subpart. Violation of each item listed in 
the paragraphs (b)(1) through (b)(6) of this section, as applicable, 
shall be considered a separate violation.
    (1) For each affected source complying with Sec. 63.1294(a) in 
accordance with Sec. 63.1294(a)(1), each unloading event that occurs 
when the diisocyanate storage vessel is not equipped with a vapor return 
line from the storage vessel to the tank truck or rail car, each 
unloading event that occurs when the vapor line is not connected, each 
unloading event that the vapor line is not inspected for leaks as 
described in Sec. 63.1294(a)(1)(i), each unloading event that occurs 
after a leak has been detected and not repaired, and each calendar day 
after a leak is detected, but not repaired as soon as practicable;
    (2) For each affected source complying with Sec. 63.1294(a) in 
accordance with Sec. 63.1294(a)(2), each unloading event that the 
diisocyanate storage vessel is not equipped with a carbon adsorption 
system, each unloading event (or each month if more than one unloading 
event occurs in a month) that the carbon adsorption system is not 
monitored for breakthrough in accordance with Sec. 63.1303(a)(3) or (4), 
and each unloading event that occurs when the carbon is not replaced 
after an indication of breakthrough;
    (3) For each affected source complying with Sec. 63.1294(a) in 
accordance with Sec. 63.1294(a)(2) through the alternative monitoring 
procedures in Sec. 63.1303(a)(2), each unloading event that the 
diisocyanate storage vessel is not equipped with a carbon adsorption 
system, each time that the carbon adsorption system is not monitored for 
breakthrough in accordance with Sec. 63.1303(a)(3) or (4) at the 
interval established in the design analysis, and each unloading event 
that occurs when the carbon is not replaced after an indication of 
breakthrough;
    (4) For each affected source complying with Sec. 63.1294(b) in 
accordance with Sec. 63.1294(b)(1), each calendar day that a transfer 
pump in diisocyanate service is not a sealless pump;
    (5) For each affected source complying with Sec. 63.1294(b) in 
accordance with Sec. 63.1294(b)(2), each calendar day that a transfer 
pump in diisocyanate service is not submerged as described in 
Sec. 63.1294(b)(2)(i), each week that the pump is not visually monitored 
for leaks, each calendar day after 5 calendar days after detection of a 
leak that a first attempt at repair has not been made in accordance with 
Sec. 63.1294(b)(2)(iii)(B), and the earlier of each calendar day after 
15 calendar days after detection of a leak that a leak is not repaired, 
or a leak is not repaired as soon as practicable, each subsequent 
calender day (with the exception of situations meeting the criteria of 
Sec. 63.1294(d));
    (6) For each affected source complying with Sec. 63.1294(c), each 
calendar day after 5 calendar days after detection of a leak that a 
first attempt at repair has not been made, and the earlier of each 
calendar day after 15 calendar days after detection of a leak that a 
leak is not repaired, or if a leak is not repaired as soon as 
practicable, each subsequent calender day (with the exception of 
situations meeting the criteria of Sec. 63.1296(f)).
    (c) Slabstock affected sources complying with the emission point 
specific limitations. For slabstock affected sources complying with the 
emission point specific limitations as provided in Sec. 63.1293(a), 
failure to meet the requirements contained in Secs. 63.1295 through 
63.1298 shall be considered a violation of this subpart. Violation of 
each item listed in the paragraphs (c)(1) through (c)(17) of this 
section, as applicable,

[[Page 164]]

shall be considered a separate violation.
    (1) For each affected source complying with Sec. 63.1295(a) in 
accordance with Sec. 63.1295(b), each unloading event that occurs when 
the HAP ABA storage vessel is not equipped with a vapor return line from 
the storage vessel to the tank truck or rail car, each unloading event 
that occurs when the vapor line is not connected, each unloading event 
that the vapor line is not inspected for leaks as described in 
Sec. 63.1295(b)(1), each unloading event that occurs after a leak has 
been detected and not repaired, and each calendar day after a leak is 
detected but not repaired as soon as practicable;
    (2) For each affected source complying with Sec. 63.1295(a) in 
accordance with Sec. 63.1295(c), each unloading event that the HAP ABA 
storage vessel is not equipped with a carbon adsorption system, each 
unloading event (or each month if more than one unloading event occurs 
in a month) that the carbon adsorption system is not monitored for 
breakthrough in accordance with Sec. 63.1303(a)(3) or (4), and each 
unloading event that occurs when the carbon is not replaced after an 
indication of breakthrough ;
    (3) For each affected source complying with Sec. 63.1295(a) in 
accordance with Sec. 63.1295(c) through the alternative monitoring 
procedures in Sec. 63.1303(a)(2), each unloading event that the HAP ABA 
storage vessel is not equipped with a carbon adsorption system, each 
time that the carbon adsorption system is not monitored for breakthrough 
in accordance with Sec. 63.1303(a)(3) or (4) at the interval established 
in the design analysis, and each unloading event that occurs when the 
carbon is not replaced after an indication of breakthrough;
    (4) For each affected source complying with Sec. 63.1296(a) in 
accordance with Sec. 63.1296(a)(1), each calendar day that a transfer 
pump in HAP ABA service is not a sealless pump;
    (5) For each affected source complying with Sec. 63.1296(a) in 
accordance with Sec. 63.1296(a)(2), each week that a visual inspection 
of a pump in HAP ABA service is not performed, each quarter that a pump 
in HAP ABA service is not monitored to detect leaks in accordance with 
Sec. 63.1304(a), each calendar day after 5 calendar days after detection 
of a leak that a first attempt at repair has not been made in accordance 
with Sec. 63.1296(b)(2)(iii)(B), and the earlier of each calendar day 
after 15 calendar days after detection of a leak that a leak is not 
repaired, or if a leak is not repaired as soon as practicable, each 
subsequent calender day (with the exception of situations meeting the 
criteria of Sec. 63.1296(f));
    (6) For each affected source complying with Sec. 63.1296(b) in 
accordance with Sec. 63.1296(b)(1) and (2), each quarter that a valve in 
HAP ABA service is not monitored to detect leaks in accordance with 
Sec. 63.1304(a), each calendar day after 5 calendar days after detection 
of a leak that a first attempt at repair has not been made in accordance 
with Sec. 63.1296(b)(2)(ii), and each calendar day after 15 calendar 
days after detection of a leak that a leak is not repaired, or if a leak 
is not repaired as soon as practicable, whichever is earlier (with the 
exception of situations meeting the criteria of Sec. 63.1296(f));
    (7) For each affected source complying with Sec. 63.1296(b)(3) for 
each valve designated as unsafe to monitor as described in 
Sec. 63.1296(b)(3)(i), failure to develop the written plan required by 
Sec. 63.1296(b)(3)(ii), each period specified in the written plan that 
an unsafe-to-monitor valve in HAP ABA service is not monitored, and each 
calendar day in which a leak is not repaired in accordance with the 
written plan;
    (8) For each affected source complying with Sec. 63.1296(b)(4) for 
one or more valves designated as difficult-to-monitor in accordance with 
Sec. 63.1296(b)(4)(i) and (ii), failure to develop the written plan 
required by Sec. 63.1296(b)(4)(iii), each calendar year that a 
difficult-to-monitor valve in HAP ABA service is not monitored, and each 
calendar day in which a leak is not repaired in accordance with the 
written plan;
    (9) For each affected source complying with Sec. 63.1296(c) in 
accordance with Sec. 63.1296(c)(1) and (2), each year that a connector 
in HAP ABA service is not monitored to detect leaks in accordance with 
Sec. 63.1304(a); each calendar day after 3 months after a connector has 
been opened, has otherwise

[[Page 165]]

had the seal broken, or a leak is repaired, that each connector in HAP 
ABA service is not monitored to detect leaks in accordance with 
Sec. 63.1304(a); each calendar day after 5 calendar days after detection 
of a leak that a first attempt at repair has not been made, and the 
earlier of each calendar day after 15 calendar days after detection of a 
leak that a leak is not repaired, or if a leak is not repaired as soon 
as practicable, each subsequent calendar day (with the exception of 
situations meeting the criteria of Sec. 63.1296(f));
    (10) For each affected source complying with Sec. 63.1296(c)(3) for 
one or more connectors designated as unsafe-to-monitor in accordance 
with Sec. 63.1296(c)(3)(i), failure to develop the written plan required 
by Sec. 63.1296(c)(3)(ii), each period specified in the written plan 
that an unsafe-to-monitor valve in HAP ABA service is not monitored, 
each calendar day after 5 calendar days after detection of a leak of an 
unsafe-to-monitor connector that a first attempt at repair has not been 
made, and the earlier of each calendar day after 15 calendar days after 
detection of a leak that a leak is not repaired, or if a leak is not 
repaired as soon as practicable, each subsequent calender day (with the 
exception of situations meeting the criteria of Sec. 63.1296(f));
    (11) For each affected source complying with Sec. 63.1296(c)(4) for 
one or more connectors designated as unsafe to repair, each year that 
one or more unsafe-to-repair connectors in HAP ABA service is not 
monitored to detect leaks in accordance with Sec. 63.1304(a); each 
calendar day after 3 months after one or more unsafe-to-repair 
connectors has been opened, has otherwise had the seal broken, or a leak 
is repaired, that each unsafe-to-repair connector in HAP ABA service is 
not monitored to detect leaks in accordance with Sec. 63.1304(a); and 
the earlier of each calendar day after six-months after detection of a 
leak that a leak is not repaired, or if a leak is not repaired as soon 
as practicable, each subsequent calendar day;
    (12) For each affected source complying with Sec. 63.1296(d) in 
accordance with Sec. 63.1296(d)(1) and (2), each calendar day after the 
5 days that the pressure-relief device has not been monitored in 
accordance with Sec. 63.1304(a) after a potential leak was discovered as 
described in Sec. 63.1296(d)(1), each calendar day after 5 calendar days 
after detection of a leak that a first attempt at repair has not been 
made, and the earlier of each calendar day after 15 calendar days after 
detection of a leak that a leak is not repaired, or if a leak is 
detected and not repaired as soon as practicable, each subsequent 
calendar day (with the exception of situations meeting the criteria of 
Sec. 63.1296(f));
    (13) For each affected source complying with Sec. 63.1296(e) in 
accordance with Sec. 63.1296(e)(1) through (5), each calendar day that 
an open-ended valve or line has no cap, blind flange, plug or second 
valve as described in Sec. 63.1296(e)(2), and each calendar day that a 
valve on the process fluid end of an open-ended valve or line equipped 
with a second valve is not closed before the second valve is closed;
    (14) For each affected source complying with Sec. 63.1297(a) in 
accordance with the rolling annual compliance option in 
Sec. 63.1297(a)(1) and (b), each calendar day in the 12-month period for 
which the actual HAP ABA emissions exceeded the allowable HAP ABA 
emissions level, each calendar day in which foam is being poured where 
the amount of polyol added at the mixhead is not monitored (as required) 
in accordance with Sec. 63.1303(b)(1)(i), each calendar day in which 
foam is being poured where the amount of HAP ABA added at the mixhead is 
not monitored (as required) in accordance with Sec. 63.1303(b)(1)(ii), 
each calendar day in a 6-month period in which the polyol pumps are not 
calibrated in accordance with Sec. 63.1303(b)(3)(i), each calendar day 
in a month in which the HAP ABA pumps are not calibrated in accordance 
with Sec. 63.1303(b)(3)(ii), and each calendar day after 10 working days 
after production where the IFD and density of a foam grade are not 
determined (where required) in accordance with Sec. 63.1304(b);
    (15) For each affected source complying with Sec. 63.1297(a) in 
accordance with the monthly compliance option in Sec. 63.1297(a)(2) and 
(c), each calendar day of each month for which the actual HAP ABA 
emissions exceeded the allowable HAP ABA emissions level for

[[Page 166]]

that month, each calendar day in which foam is being poured where the 
amount of polyol added at the mixhead is not monitored (as required) in 
accordance with Sec. 63.1303(b)(1)(i), each calendar day in which foam 
is being poured where the amount of HAP ABA added at the mixhead is not 
monitored (as required) in accordance with Sec. 63.1303(b)(1)(ii), each 
6-month period in which the polyol pumps are not calibrated in 
accordance with Sec. 63.1303(b)(3)(i), each month in which the HAP ABA 
pumps are not calibrated in accordance with Sec. 63.1303(b)(3)(ii), and 
each calendar day after 10 working days after production where the IFD 
and density of a foam grade are not determined (where required) in 
accordance with Sec. 63.1304(b);
    (16) For each affected source complying with Sec. 63.1297(a) by 
using a recovery device as allowed under Sec. 63.1297(e), the items 
listed in (c)(16)(i) or (ii) of this section, as applicable.
    (i) If complying with rolling annual compliance option in 
Sec. 63.1297(a)(1) and (b), each item listed in (c)(14) of this section, 
failure to develop a recovered HAP ABA monitoring and recordkeeping 
program in accordance with Sec. 63.1303(c), and each instance when an 
element of the program is not followed.
    (ii) If complying with the monthly compliance option in 
Sec. 63.1297(a)(2) and (c), each item listed in (c)(15) of this section, 
failure to develop a recovered HAP ABA monitoring and recordkeeping 
program in accordance with Sec. 63.1303(c), and each instance when an 
element of the program is not followed.
    (17) For each affected source complying with Sec. 63.1298, each 
calendar day that a HAP or any HAP-based material is used as an 
equipment cleaner.
    (d) Slabstock affected sources complying with the source-wide 
emission limitation. For slabstock affected sources complying with the 
source-wide emission limitation as provided in Sec. 63.1293(b), failure 
to meet the requirements contained in Sec. 63.1299 shall be considered a 
violation of this subpart. Violation of each item listed in the 
paragraphs (d)(1) through (d)(3) of this section, as applicable, shall 
be considered a separate violation.
    (1) For each affected source complying with Sec. 63.1299 in 
accordance with the rolling annual compliance option in Sec. 63.1299(a), 
each calendar day in the 12-month period for which the actual HAP ABA 
emissions exceeded the allowable HAP ABA emissions level, each calendar 
day in which foam is being poured where the amount of polyol added at 
the mixhead is not monitored (as required) in accordance with 
Sec. 63.1303(b)(1)(i), each calendar day in a week in which the amount 
of HAP ABA in a storage vessel is not determined in accordance with 
Sec. 63.1303(d), each delivery of HAP ABA in which the amount of HAP ABA 
added to the storage vessel is not determined in accordance with 
Sec. 63.1303(e), each calendar day in a 6-month period in which the 
polyol pumps are not calibrated in accordance with 
Sec. 63.1303(b)(3)(i), and each calendar day after 10 working days after 
production where the IFD and density of a foam grade are not determined 
(where required) in accordance with Sec. 63.1304(b);
    (2) For each affected source complying with Sec. 63.1299 in 
accordance with the monthly compliance option in Sec. 63.1299(b), each 
calendar day of each month for which the actual HAP ABA emissions 
exceeded the allowable HAP ABA emissions level for that month, each 
calendar day in which foam is being poured where the amount of polyol 
added at the mixhead is not monitored (as required) in accordance with 
Sec. 63.1303(b)(1)(i), each calendar day in a week in which the amount 
of HAP ABA in a storage vessel is not determined in accordance with 
Sec. 63.1303(d), each delivery of HAP ABA in which the amount of HAP ABA 
added to the storage vessel is not determined in accordance with 
Sec. 63.1303(e), and each calendar day in a 6-month period in which the 
polyol pumps are not calibrated in accordance with 
Sec. 63.1303(b)(3)(i), and each calendar day after 10 working days after 
production where the IFD and density of a foam grade are not determined 
(where required) in accordance with Sec. 63.1304(b).
    (3) For each affected source complying with Sec. 63.1299 by using a 
recovery device as allowed under Sec. 63.1299(e), the items listed in 
(d)(3)(i) or (ii) of this section, as applicable.
    (i) If complying with rolling annual compliance option in 
Sec. 63.1299(a), each

[[Page 167]]

item listed in (d)(1) of this section, failure to develop a recovered 
HAP ABA monitoring and recordkeeping program in accordance with 
Sec. 63.1303(c), and each instance when an element of the program is not 
followed.
    (ii) If complying with the monthly compliance option in 
Sec. 63.1299(b), each item listed in (d)(2) of this section, failure to 
develop a recovered HAP ABA monitoring and recordkeeping program in 
accordance with Sec. 63.1303(c), and each instance when an element of 
the program is not followed.
    (e) Molded and rebond foam affected sources. For molded and rebond 
foam affected sources, failure to meet the requirements contained in 
Sec. 63.1300 and Sec. 63.1301, respectively, shall be considered a 
violation of this subpart. Violation of each item listed in the 
following paragraphs shall be considered a separate violation.
    (1) For each molded foam affected source subject to the provisions 
in Sec. 63.1300(a), each calendar day that a HAP-based material is used 
as an equipment cleaner (except for diisocyanates used to flush the 
mixhead and associated piping during periods of startup or maintenance, 
provided that the diisocyanate compounds are contained in a closed-loop 
system and are re-used in production);
    (2) For each molded foam affected source subject to the provisions 
of Sec. 63.1300(b), each calendar day that a HAP-base material is used 
as a mold release agent;
    (3) For each rebond foam affected source subject to the provisions 
of Sec. 63.1301(a), each calendar day that a HAP-based material is used 
as an equipment cleaner; and
    (4) For each rebond foam affected source complying with 
Sec. 63.1301(b), each calendar day that a HAP-based mold release agent 
is used.



Sec. 63.1309  Delegation of authority.

    (a) In delegating implementation and enforcement authority to a 
State under Sec. 112(d) of the Clean Air Act, the authorities contained 
in paragraph (b) of this section shall be retained by the Administrator 
and not transferred to a State.
    (b) The authority conferred in Sec. 63.1303(b)(5) and 
Sec. 63.1305(d) shall not be delegated to any State.

                     Appendix to Subpart III--Tables

    For the convenience of the readers of subpart III, the tables below 
summarize the requirements in Secs. 63.1290 to 63.1307. These tables are 
intended to assist the reader in determining the requirements applicable 
to affected sources and do not alter an affected source's obligation to 
comply with the requirements in Secs. 63.1290 to 63.1307.
    TABLE 1 TO SUBPART III--HAP ABA FORMULATION LIMITATIONS MATRIX FOR 
NEW SOURCES [see Sec. 63.1297(d)(2)]

[[Page 168]]

[GRAPHIC] [TIFF OMITTED] TR07OC98.010


     Table 2 to Subpart III--Applicability of General Provisions (40 CFR Part 63, Subpart A) to Subpart III.
----------------------------------------------------------------------------------------------------------------
                                                             Applies to
                   Subpart A reference                       subpart III                  Comment
----------------------------------------------------------------------------------------------------------------
Sec.  63.1...............................................            YES   Except that Sec.  63.1(c)(2) is not
                                                                            applicable to the extent area
                                                                            sources are not subject to subpart
                                                                            III.
Sec.  63.2...............................................            YES   Definitions are modified and
                                                                            supplemented by Sec.  63.1292.
Sec.  63.3...............................................            YES
Sec.  63.4...............................................            YES
Sec.  63.5...............................................            YES
Sec.  63.6 (a)-(d).......................................            YES
Sec.  63.6(e) (1)-(2)....................................            YES
Sec.  63.6(e)(3).........................................             NO   Owners and operators of subpart III
                                                                            affected sources are not required to
                                                                            develop and implement a startup,
                                                                            shutdown, and malfunction plan.
Sec.  63.6 (f)-(g).......................................            YES
Sec.  63.6(h)............................................             NO   Subpart III does not require opacity
                                                                            and visible emission standards.
Sec.  63.6 (i)-(j).......................................            YES
Sec.  63.7...............................................             NO   Performance tests not required by
                                                                            subpart III.
Sec.  63.8...............................................             NO   Continuous monitoring, as defined in
                                                                            subpart A, is not required by
                                                                            subpart III.
Sec.  63.9 (a)-(d).......................................            YES
Sec.  63.9 (e)-(g).......................................             NO
Sec.  63.9(h)............................................             NO   Subpart III specifies Notification of
                                                                            Compliance Status requirements.
Sec.  63.9 (i)-(j).......................................            YES
Sec.  63.10 (a)-(b)......................................            YES   Except that the records specified in
                                                                            Sec.  63.10(b)(2)(vi) through (xi)
                                                                            and (xiii) are not required.
Sec.  63.10(c)...........................................             NO

[[Page 169]]

 
Sec.  63.10(d)(1)........................................            YES
Sec.  63.10 (d) (2)-(3)..................................             NO
Sec.  63.10 (d) (4)-(5)..................................            YES
Sec.  63.10(e)...........................................             NO
Sec.  63.10(f)...........................................            YES
Sec.  63.11..............................................            YES
Sec.  63.12..............................................            YES
Sec.  63.13..............................................            YES
Sec.  63.14..............................................            YES
Sec.  63.15..............................................            YES
----------------------------------------------------------------------------------------------------------------


[[Page 170]]


 Table 3 to Subpart III.--Compliance Requirements for Slabstock Foam Production Affected Sources Complying with the Emission Point Specific Limitations
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                 Emission, work
           Emission point                Emission point           practice, and            Monitoring           Recordkeeping            Reporting
                                        compliance option      equipment standards
--------------------------------------------------------------------------------------------------------------------------------------------------------
Diisocyanate storage vessels Sec.    Vapor balance.........  Sec.  63.1294(a)(1)     Sec.  63.1294(a)(1)(i  Sec.  63.1307(a)(1)    Sec.  63.1306(e)(5).
 63.1294(a)                                                   and (1)(ii).            ).                     and (4).
                                     Carbon adsorber.......  Sec.  63.1294(a)(2)...  Sec.  63.1303(a)(1),   Sec.  63.1307(a)(1),   Sec.  63.1306(e)(3).
                                                                                      (3), and (4).          (3)(i), and (3)(iii).
                                     Carbon adsorber--       Sec.  63.1294(a)(2)...  Sec.  63.1303(a)(2),   Sec.  63.1307(a)(1),   Sec.  63.1306(e)(3).
                                      alternative                                     (3) and (4).           (3)(ii), and
                                      monitoring.                                                            (3)(iii).
Diisocyanate transfer pumps Sec.     Sealless pump.........  Sec.  63.1294(b)(1)...  .....................  Sec.  63.1307          .....................
 63.1294(b)                                                                                                  (b)(1)(i) and (2).
                                     Submerged pump........  Sec.  63.1294(b)(2)(i)  Sec.  63.1294          Sec.  63.1307          Sec.  63.1306(e)(4).
                                                              and (iii).              (b)(2)(ii).            (b)(1)(i), (2), and
                                                                                                             (3).
Other components in diisocyanate     N/A...................  Sec.  63.1294(c)......  Sec.  63.1294(c).....  Sec.  63.1307          Sec.  63.1306(e)(4).
 service Sec.  63.1294(c).                                                                                   (b)(1)(i) and (3).
HAP ABA storage vessels Sec.         Vapor balance.........  Sec.  63.1295(b) and    Sec.  63.1295 (b)(1).  Sec.  63.1307(a)(2)    Sec.  63.1306(e)(5).
 63.1295                                                      (b)(2).                                        and (4).
                                     Carbon adsorber.......  Sec.  63.1295(c)......  Sec.  63.1303(a)(1),   Sec.  63.1307(a)(2),   Sec.  63.1306(e)(3).
                                                                                      (3), and (4).          (3)(i), (3)(iii).
                                     Carbon adsorber--       Sec.  63.1295(c)......  Sec.  63.1303(a)(2),   Sec.  63.1307(a)(2),   Sec.  63.1306(e)(3).
                                      alternative                                     (3) and (4).           (3)(ii), and
                                      monitoring.                                                            (3)(iii).
HAP ABA pumps Sec.  63.1296(a):      Sealless pump.........  Sec.  63.1296(a)(1)...  .....................  Sec.  63.1307          .....................
                                                                                                             (b)(1)(ii).
                                     Quarterly monitoring..  Sec.  63.1296(a)(2)     Sec.  63.1296(a)(2)(i  Sec.  63.1307          Sec.  63.1304(e)(4).
                                                              and (2)(iii).           ), (2)(ii) and Sec.    (b)(1)(ii) and (3).
                                                                                      63.1304(a).
HAP ABA valves Sec.  63.1296(b):     Quarterly monitoring..  Sec.  63.1296(b), and   Sec.  63.1296 (b)(1)   Sec.  63.1307          Sec.  63.1304(e)(4).
                                                              (b)(2).                 and Sec.  63.1304(a).  (b)(1)(ii) and (3).
                                     Unsafe-to-monitor.....  Sec.  63.1296(b)(3)     Sec.  63.1296          Sec.  63.1307          Sec.  63.1304(e)(4).
                                                              (i), (ii), and (iv).    (b)(3)(iii).           (b)(1)(ii), and (4).
                                     Difficult-to-monitor..  Sec.  63.1296(b)(4)     Sec.  63.1296(b)(4)(i  Sec.  63.1307          Sec.  63.1306(e)(4).
                                                              (i), (ii), (iii), and   v) and Sec.            (b)(1)(ii) and (4).
                                                              (v).                    63.1304(a).
HAP ABA Connectors Sec.              Annual monitoring.....  Sec.  63.1296(c) and    Sec.  63.1296(c)(1)    Sec.  63.1307          Sec.  63.1306(e)(4).
 63.1296(c):.                                                 (c)(2).                 and Sec.  63.1304(a).  (b)(1)(ii) and (3).
                                     Unsafe-to-monitor.....  Sec.  63.1296(c)(2),    Sec.  63.1296(c)(3)    Sec.  63.1307          Sec.  63.1306(e)(4).
                                                              (3) (i), and (ii).      (iii) and Sec.         (b)(1)(ii) and (4).
                                                                                      63.1304(a).
                                     Unsafe-to-repair......  Sec.  63.1296(c)(4)...  Sec.  63.1296(c)(1)..  Sec.  63.1307          Sec.  63.1306(e)(4).
                                                                                                             (b)(1)(ii).
Pressure-relief devices Sec.         N/A...................  Sec.  63.1296(d) and    Sec.  63.1296 (d)(1)   Sec.  63.1307          Sec.  63.1306(e)(4).
 63.1296(d)                                                   (d)(2).                 and Sec.  63.1304(a).  (b)(1)(ii) and (3).
Open-ended valves or lines Sec.      N/A...................  Sec.  63.1296(e)......  .....................  Sec.  63.1307          .....................
 63.1296(e).                                                                                                 (b)(1)(ii).
Production line Sec.  63.1297......  Rolling annual          Sec.  63.1297(a)(1)     Sec.  63.1303 (b)....  Sec.  63.1307(c)(1)..  Sec.  63.1306(e)(1).
                                      compliance.             and (b).
                                     Monthly compliance....  Sec.  63.1297(a)(2)     Sec.  63.1303 (b)....  Sec.  63.1307(c)(1)..  Sec.  63.1306(e)(2).
                                                              and (c).

[[Page 171]]

 
                                     Compliance Using a      Sec.  63.1297(a)(1),    Sec.  63.1303 (b) and  Sec.  63.1307(c)(1)    Sec.  63.1306(e)(1)
                                      Recovery device.        (b), and (e) for        (c).                   and (d).               or (2).
                                                              rolling annual
                                                              compliance or Sec.
                                                              63.1297(a)(2), (c),
                                                              and (e) for monthly
                                                              compliance.
Equipment Cleaning Sec.  63.1298...  N/A...................  Sec.  63.1298.........  .....................  Sec.  63.1307(e).....  .....................
--------------------------------------------------------------------------------------------------------------------------------------------------------


   Table 4 to Subpart III.--Compliance Requirements for Slabstock Foam Production Affected Sources Complying With the Source-Wide Emission Limitation
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                 Emission, work
           Emission point                Emission point           practice, and            Monitoring           Recordkeeping            Reporting
                                        compliance option      equipment standards
--------------------------------------------------------------------------------------------------------------------------------------------------------
Diisocyanate storage vessels Sec.    Vapor balance.........  Sec.  63.1294(a)(1)     Sec.  63.1294(a)(1)(i  Sec.  63.1307(a)(1)    Sec.  63.1306(e)(5).
 63.1294(a).                                                  and (1)(ii).            ).                     and (4).
                                     Carbon adsorber.......  Sec.  63.1294(a)(2)...  Sec.  63.1303(a)(1),   Sec.  63.1307(a)(1),   Sec.  63.1306(e)(3).
                                                                                      (3), and (4).          (3)(i), and (3)(iii).
                                     Carbon adsorber--       Sec.  63.1294(a)(2)...  Sec.  63.1303(a)(2),   Sec.  63.1307(a)(1),   Sec.  63.1306(e)(3).
                                      alternative                                     (3) and (4).           (3)(ii), and
                                      monitoring.                                                            (3)(iii).
Diisocyanate transfer pumps Sec.     Sealless pump.........  Sec.  63.1294(b)(1)...  .....................  Sec.  63.1307          .....................
 63.1294(b).                                                                                                 (b)(1)(i) and (2).
                                     Submerged pump........  Sec.  63.1294(b)(2)(i)  Sec.  63.1294          Sec.  63.1307          Sec.  63.1306(e)(4).
                                                              and (iii).              (b)(2)(ii).            (b)(1)(i), (2), and
                                                                                                             (3).
Other components in diisocyanate     N/A...................  Sec.  63.1294(c)......  Sec.  63.1294(c).....  Sec.  63.1307          Sec.  63.1306(e)(4).
 service Sec.  63.1294(c).                                                                                   (b)(1)(i) and (3).
HAP ABA storage vessels, equipment   Rolling annual          Sec.  63.1299(a),       Sec.  63.1303 (b)      Sec.  63.1307(c)(2)..  Sec.  63.1306(e)(1).
 leaks, production line, and          compliance.             (c)(1) through (4),     except (b)(1)(ii),
 equipment cleaning.                                          and (d).                (d), and (e).
                                     Monthly compliance....  Sec.  63.1299(b),       Sec.  63.1303 (b)      Sec.  63.1307(c)(2)..  Sec.  63.1306(e)(2).
                                                              (c)(1) through (4),     except (b)(1)(ii),
                                                              and (d).                (d), and (e).
                                     Compliance Using a      Sec.  63.1299(a), (d),  Sec.  63.1303 (b)      Sec.  63.1307(c)(2)    Sec.  63.1306(e)(1)
                                      Recovery device.        and (e) for rolling     except (b)(1)(ii)      and (d).               or (2).
                                                              annual compliance or    and (c).
                                                              Sec.  63.1299(b),
                                                              (d), and (e) for
                                                              monthly compliance.
--------------------------------------------------------------------------------------------------------------------------------------------------------


                         Table 5 to Subpart III.--Compliance Requirements for Molded and Rebond Foam Production Affected Sources
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                 Emission, work
           Emission point                Emission point           practice, and            Monitoring           Recordkeeping            Reporting
                                        compliance option      equipment standards
--------------------------------------------------------------------------------------------------------------------------------------------------------
            Molded Foam
Equipment cleaning.................  N/A...................  Sec.  63.1300(a)......  .....................  Sec.  63.1307(g).....  .....................
Mold release agent.................  N/A...................  Sec.  63.1300(b)......  .....................  Sec.  63.1307 (h)....  .....................

[[Page 172]]

 
            Rebond Foam
Equipment cleaning.................  N/A...................  Sec.  63.1301(a)......  .....................  Sec.  63.1307 (g)....  .....................
Mold release agent.................  N/A...................  Sec.  63.1301(b)......  .....................  Sec.  63.1307 (h)....  .....................
--------------------------------------------------------------------------------------------------------------------------------------------------------


[[Page 173]]



  Subpart JJJ--National Emission Standards for Hazardous Air Pollutant 
                 Emissions: Group IV Polymers and Resins

    Source: 61 FR 48229, Sept. 12, 1996, unless otherwise noted.



Sec. 63.1310  Applicability and designation of affected sources.

    (a) Definition of affected source. The provisions of this subpart 
apply to each affected source. An affected source is either an existing 
affected source or a new affected source. Existing affected source is 
defined in paragraph (a)(6) of this section, and new affected source is 
defined in paragraph (a)(7) of this section. The affected source also 
includes the emission points and equipment specified in paragraphs 
(a)(1) through (a)(5) of this section that are associated with each 
group of TPPU.
    (1) Each wastewater stream.
    (2) Each wastewater operation.
    (3) Each heat exchange system.
    (4) Each process contact cooling tower used in the manufacture of 
PET that is associated with a new affected source.
    (5) Each process contact cooling tower used in the manufacture of 
PET using a continuous terephthalic acid high viscosity multiple end 
finisher process that is associated with an existing affected source.
    (6) Except as specified in paragraphs (b) through (d) of this 
section, an existing affected source is defined as each group of one or 
more thermoplastic product process units (TPPUs) that is not part of a 
new affected source as defined in paragraph (a)(7) of this section, that 
is manufacturing the same primary product, where each TPPU uses as a 
reactant, or uses as a process solvent, or produces as a by-product or 
co-product any organic hazardous air pollutant (organic HAP), and that 
is located at a plant site that is a major source.
    (7) Except as specified in paragraphs (b) through (d) of this 
section, a new affected source is defined as a source meeting the 
criteria of paragraph (a)(7)(i), (a)(7)(ii), or (a)(7)(iii) of this 
section:
    (i) At a plant site previously without HAP emissions points, each 
group of one or more TPPUs manufacturing the same primary product that 
is part of a major source on which construction commenced after March 
29, 1995;
    (ii) A TPPU meeting the criteria in paragraph (i)(1)(i) of this 
section; or
    (iii) A reconstructed affected source meeting the criteria in 
paragraph (i)(2)(i) of this section.
    (b) TPPUs exempted from the affected source. For a TPPU to be 
excluded from the designation of affected source due to the fact that it 
does not use as a reactant, or use as a process solvent, or produce as a 
by-product or co-product any organic HAP, the owner or operator shall 
comply with the requirements of paragraph (b)(1) of this section and 
shall comply with the requirements of paragraph (b)(2) of this section 
if requested to do so by the Administrator.
    (1) Retain information, data, and analysis used to document the 
basis for the determination that the TPPU does not use as a reactant or 
use as a process solvent, or manufacture as a by-product or a co-product 
any organic HAP. Types of information that could document this 
determination include, but are not limited to, records of chemicals 
purchased for the process, analyses of process stream composition, or 
engineering calculations.
    (2) When requested by the Administrator, demonstrate that the TPPU 
does not use as a reactant, or use as a process solvent, or manufacture 
as a by-product or co-product any organic HAP.
    (c) Emission points exempted from the affected source. The affected 
source does not include the emission points listed in paragraphs (c)(1) 
through (c)(6) of this section:
    (1) Stormwater from segregated sewers;
    (2) Water from fire-fighting and deluge systems in segregated 
sewers;
    (3) Spills;
    (4) Water from safety showers;
    (5) Vessels and equipment storing and/or handling material that 
contain no organic HAP and/or organic HAP as impurities only; and
    (6) Equipment that is intended to operate in organic HAP service for 
less than 300 hours during the calendar year.

[[Page 174]]

    (d) Processes exempted from the affected source. The processes 
specified in paragraphs (d)(1) through (d)(5) of this section are 
exempted from the affected source:
    (1) Research and development facilities;
    (2) Polymerization processes occurring in a mold;
    (3) Processes which manufacture binder systems containing a 
thermoplastic product for paints, coatings, or adhesives;
    (4) Finishing processes including equipment such as compounding 
units, spinning units, drawing units, extruding units, and other 
finishing steps; and
    (5) Solid state polymerization processes.
    (e) Applicability determination of nonthermoplastic equipment 
included in a TPPU producing a thermoplastic product. If a polymer that 
is not subject to this subpart is produced within the equipment (i.e., 
collocated) making up a TPPU and at least 50 percent of said polymer is 
used in the production of a thermoplastic product manufactured by said 
TPPU, the unit operations involved in the production of said polymer are 
considered part of the TPPU and are subject to this rule except as 
specified in this paragraph (e). If said unit operations are subject to 
another MACT standard regulating the same emission points, said unit 
operations are not subject to this subpart.
    (f) Primary product determination and applicability. The primary 
product of a process unit shall be determined according to the 
procedures specified in paragraphs (f)(1) through (f)(2) of this 
section. Paragraphs (f)(3) through (f)(4) of this section describe 
whether or not a process unit is subject to this subpart. Paragraphs 
(f)(5) through (f)(7) of this section discuss compliance for those TPPUs 
operated as flexible operation units, as specified in paragraph (f)(2) 
of this section.
    (1) If a process unit only manufactures one product, then that 
product shall represent the primary product of the process unit.
    (2) If a process unit is designed and operated as a flexible 
operation unit, the primary product shall be determined as specified in 
paragraphs (f)(2)(i) or (f)(2)(ii) of this section based on the 
anticipated operations for the 5 years following September 12, 1996 for 
existing affected sources and for the first 5 years after initial start-
up for new affected sources.
    (i) If the flexible operation unit will manufacture one product for 
the greatest operating time over the five year period, then that product 
shall represent the primary product of the flexible operation unit.
    (ii) If the flexible operation unit will manufacture multiple 
products equally based on operating time, then the product with the 
greatest production on a mass basis over the five year period shall 
represent the primary product of the flexible operation unit.
    (3) If the primary product of a process unit is a thermoplastic 
product, then said process unit is considered a TPPU. If said TPPU meets 
all the criteria of paragraph (a) of this section, it is either an 
affected source or is part of an affected source comprised of other TPPU 
subject to this rule at the same plant site with the same primary 
product. The status of a process unit as a TPPU and as an affected 
source or part of an affected source shall not change regardless of what 
products are produced in the future by said TPPU, with the exception 
noted in paragraph (f)(3)(i) of this section.
    (i) If a process unit terminates the production of all thermoplastic 
products and does not anticipate the production of any thermoplastic 
product in the future, the process unit is no longer a TPPU and is not 
subject to this rule after notification is made as specified in 
paragraph (f)(3)(ii) of this section.
    (ii) The owner or operator of a process unit that wishes to remove 
the TPPU designation from the process unit, as specified in paragraph 
(f)(3)(i) of this section, shall notify the Administrator. This 
notification shall be accompanied by rationale for why it is anticipated 
that no thermoplastic products will be produced in the process unit in 
the future.
    (iii) If a process unit meeting the criteria of paragraph (f)(3)(i) 
of this section begins the production of a thermoplastic product in the 
future, the owner or operator shall use the procedures in

[[Page 175]]

paragraph (f)(4)(i) of this section to determine if the process unit is 
re-designated as a TPPU.
    (4) If the primary product of a process unit is not a thermoplastic 
product, then said process unit is not an affected source nor is it part 
of any affected source subject to this rule. Said process unit is not 
subject to this rule at any time, regardless of what product is being 
produced. The status of a process unit as not being a TPPU, and 
therefore not an affected source nor part of an affected source subject 
to this subpart, shall not change regardless of what products are 
produced in the future by said TPPU, with the exception noted in 
paragraph (f)(4)(i) of this section.
    (i) If, at any time beginning September 12, 2001, the owner or 
operator determines that a thermoplastic product is the primary product 
for the process unit based on actual production data for any preceding 
consecutive five-year period, then the process unit shall be designated 
as a TPPU. If said TPPU meets all the criteria of paragraph (a) of this 
section and is not subject to another subpart of 40 CFR part 63, it is 
either an affected source or part of an affected source and shall be 
subject to this rule.
    (ii) If a process unit meets the criteria of paragraph (f)(4)(i) of 
this section, the owner or operator shall notify the Administrator 
within 6 months of making this determination. The TPPU, as the entire 
affected source or part of an affected source, shall be in compliance 
with the provisions of this rule within 3 years from the date of such 
notification.
    (iii) If a process unit is re-designated as a TPPU but does not meet 
all the criteria of paragraph (a) of this section, the owner or operator 
shall notify the Administrator within 6 months of making this 
determination. Said notification shall include documentation justifying 
the TPPU's status as not being an affected source or not being part of 
an affected source.
    (5) Once the primary product of a process unit has been determined 
to be a thermoplastic product and it has been determined that all the 
criteria of paragraph (a) of this section are met for said TPPU, the 
owner or operator of the affected source shall comply with the standards 
for the primary product. Owners or operators of flexible operation units 
shall comply with the standards for the primary product as specified in 
either paragraph (f)(5)(i) or (f)(5)(ii) of this section, except as 
specified in paragraph (f)(5)(iii) of this section.
    (i) Each owner or operator shall determine the group status of each 
emission point that is part of said flexible operation unit based on 
emission point characteristics when the primary product is being 
manufactured. Based on this finding, the owner or operator shall comply 
with the applicable standards for the primary product for each emission 
point, as appropriate, at all times, regardless of what product is being 
produced.
    (ii) Alternatively, each owner or operator shall determine the group 
status of each emission point that is part of said flexible operation 
unit based on the emission point characteristics when each product 
produced by the flexible operation unit is manufactured, regardless of 
whether said product is a thermoplastic product or not. Based on these 
findings, the owner or operator shall comply with the applicable 
standards for the primary product for each emission point, as 
appropriate, regardless of what product is being produced.
    Note: Under this scenario it is possible that the group status, and 
therefore the requirement to achieve emission reductions, for an 
emission point may change depending on the product being produced.
    (iii) Whenever a flexible operation unit manufactures a product that 
meets the criteria of paragraph (b) of this section (i.e., does not use 
or produce any organic HAP), all activities associated with the 
manufacture of said product shall be exempt from the requirements of 
this rule, to include the operation and monitoring of control or 
recovery devices.
    (6) The determination of the primary product for a process unit, to 
include the determination of applicability of this subpart to process 
units that are designed and operated as flexible operation units, shall 
be reported in the Notification of Compliance Status required by 
Sec. 63.1335(e)(5) when the primary product is determined to be a

[[Page 176]]

thermoplastic product. The Notification of Compliance Status shall 
include the information specified in either paragraph (f)(6)(i) or 
(f)(6)(ii) of this section. If the primary product is determined to be 
something other than a thermoplastic product, the owner or operator 
shall retain information, data, and analysis used to document the basis 
for the determination that the primary product is not a thermoplastic 
product.
    (i) If the TPPU manufactures only one thermoplastic product, 
identification of said thermoplastic product.
    (ii) If the TPPU is designed and operated as a flexible operation 
unit, the information specified in paragraphs (f)(6)(ii)(A) through 
(f)(6)(ii)(C) of this section, as appropriate.
    (A) Identification of the primary product.
    (B) Information concerning operating time and/or production mass for 
each product that was used to make the determination of the primary 
product under paragraph (f)(2)(i) or (f)(2)(ii) of this section.
    (C) Identification of which compliance option, either paragraph 
(f)(5)(i) or (f)(5)(ii) of this section, has been selected by the owner 
or operator.
    (7) To demonstrate compliance with the rule during those periods 
when a flexible operation unit that is subject to this subpart is 
producing a product other than a thermoplastic product or is producing a 
thermoplastic product that is not the primary product, the owner or 
operator shall comply with either paragraphs (f)(7)(i) through 
(f)(7)(ii) or paragraph (f)(7)(iii) of this section.
    (i) Establish parameter monitoring levels, as specified in 
Sec. 63.1334, for those emission points designated as Group 1, as 
appropriate.
    (ii) Submit the parameter monitoring levels developed under 
paragraph (f)(7)(i) of this section and the basis for them in the 
Notification of Compliance Status report as specified in 
Sec. 63.1335(e)(5).
    (iii) Demonstrate that the parameter monitoring levels established 
for the primary product are also appropriate for those periods when 
products other than the primary product are being produced. Material 
demonstrating this finding shall be submitted in the Notification of 
Compliance Status report as specified in Sec. 63.1335(e)(5).
    (g) Storage vessel ownership determination. The owner or operator 
shall follow the procedures specified in paragraphs (g)(1) through 
(g)(8) of this section to determine to which process unit a storage 
vessel shall belong.
    (1) If a storage vessel is already subject to another subpart of 40 
CFR part 63 on September 12, 1996, said storage vessel shall belong to 
the process unit subject to the other subpart.
    (2) If a storage vessel is dedicated to a single process unit, the 
storage vessel shall belong to that process unit.
    (3) If a storage vessel is shared among process units, then the 
storage vessel shall belong to that process unit located on the same 
plant site as the storage vessel that has the greatest input into or 
output from the storage vessel (i.e., said process unit has the 
predominant use of the storage vessel).
    (4) If predominant use cannot be determined for a storage vessel 
that is shared among process units and if one of those process units is 
a TPPU subject to this subpart, the storage vessel shall belong to said 
TPPU.
    (5) If predominant use cannot be determined for a storage vessel 
that is shared among process units and if more than one of the process 
units are TPPUs that have different primary products and that are 
subject to this subpart, then the owner or operator shall assign the 
storage vessel to any one of the said TPPUs.
    (6) If the predominant use of a storage vessel varies from year to 
year, then predominant use shall be determined based on the utilization 
that occurred during the year preceding September 12, 1996 or based on 
the expected utilization for the 5 years following September 12, 1996 
for existing affected sources, whichever is more representative of the 
expected operations for said storage vessel, and based on the first 5 
years after initial start-up for new affected sources. The determination 
of predominant use shall be reported in the Notification of Compliance 
Status required by Sec. 63.1335(e)(5). If the predominant use

[[Page 177]]

changes, the redetermination of predominant use shall be reported in the 
next Periodic Report.
    (7) If the storage vessel begins receiving material from (or sending 
material to) another process unit; or ceasing to receive material from 
(or send material to) a process unit; or if the applicability of this 
subpart to a storage vessel has been determined according to the 
provisions of paragraphs (g)(1) through (g)(6) of this section and there 
is a significant change in the use of the storage vessel that could 
reasonably change the predominant use, the owner or operator shall 
reevaluate the applicability of this subpart to the storage vessel.
    (8) Where a storage vessel is located at a major source that 
includes one or more process units which place material into, or receive 
materials from the storage vessel, but the storage vessel is located in 
a tank farm, the applicability of this subpart shall be determined 
according to the provisions in paragraphs (g)(8)(i) through (g)(8)(iv) 
of this section.
    (i) The storage vessel may only be assigned to a process unit that 
utilizes the storage vessel and does not have an intervening storage 
vessel for that product (or raw materials, as appropriate). With respect 
to any process unit, an intervening storage vessel means a storage 
vessel connected by hard-piping to the process unit and to the storage 
vessel in the tank farm so that product or raw material entering or 
leaving the process unit flows into (or from) the intervening storage 
vessel and does not flow directly into (or from) the storage vessel in 
the tank farm.
    (ii) If there is no process unit at the major source that meets the 
criteria of paragraph (g)(8)(i) of this section with respect to a 
storage vessel, this subpart does not apply to the storage vessel.
    (iii) If there is only one process unit at the major source that 
meets the criteria of paragraph (g)(8)(i) of this section with respect 
to a storage vessel, the storage vessel shall be assigned to that 
process unit.
    (iv) If there are two or more process units at the major source that 
meet the criteria of paragraph (g)(8)(i) of this section with respect to 
a storage vessel, the storage vessel shall be assigned to one of those 
process units according to the provisions of paragraph (g)(7) of this 
section. The predominant use shall be determined among only those 
thermoplastic product process units that meet the criteria of paragraph 
(g)(8)(i) of this section.
    (h) Recovery operation equipment ownership determination. The owner 
or operator shall follow the procedures specified in paragraphs (h)(1) 
through (h)(7) of this section to determine to which process unit 
recovery operation equipment shall belong.
    (1) If recovery operation equipment is already subject to another 
subpart of 40 CFR part 63 on September 12, 1996, said recovery operation 
equipment shall belong to the process unit subject to the other subpart.
    (2) If recovery operation equipment is used exclusively by a single 
process unit, the recovery operation shall belong to that process unit.
    (3) If recovery operation equipment is shared among process units, 
then the recovery operation equipment shall belong to that process unit 
located on the same plant site as the recovery operation equipment that 
has the greatest input into or output from the recovery operation 
equipment (i.e., said process unit has the predominant use of the 
recovery operation equipment).
    (4) If predominant use cannot be determined for recovery operation 
equipment that is shared among process units and if one of those process 
units is a TPPU subject to this subpart, the recovery operation 
equipment shall belong to said TPPU.
    (5) If predominant use cannot be determined for recovery operation 
equipment that is shared among process units and if more than one of the 
process units are TPPUs that have different primary products and that 
are subject to this subpart, then the owner or operator shall assign the 
recovery operation equipment to any one of said TPPUs.
    (6) If the predominant use of recovery operation equipment varies 
from year to year, then predominant use shall be determined based on the 
utilization that occurred during the year preceding September 12, 1996 
or based on the expected utilization for the 5 years

[[Page 178]]

following September 12, 1996 for existing affected sources, whichever is 
the more representative of the expected operations for said recovery 
operations equipment, and based on the first 5 years after initial 
start-up for new affected sources. This determination shall be reported 
in the Notification of Compliance Status required by Sec. 63.1335(e)(5). 
If the predominant use changes, the redetermination of predominant use 
shall be reported in the next Periodic Report.
    (7) If there is an unexpected change in the utilization of recovery 
operation equipment that could reasonably change the predominant use, 
the owner or operator shall redetermine to which process unit the 
recovery operation belongs by reperforming the procedures specified in 
paragraphs (h)(2) through (h)(6) of this section.
    (i) Changes or additions to plant sites. The provisions of 
paragraphs (i)(1) through (i)(4) of this section apply to owners or 
operators that change or add to their plant site or affected source. 
Paragraph (i)(5) of this section provides examples of what are and are 
not considered process changes for purposes of paragraph (i) of this 
section.
    (1) Adding a TPPU to a plant site. The provisions of paragraphs 
(i)(1)(i) through (i)(1)(ii) of this section apply to owners or 
operators that add TPPUs to a plant site.
    (i) If a TPPU is added to a plant site, said addition shall be a new 
affected source and shall be subject to the requirements for a new 
affected source in this subpart upon initial start-up or by September 
12, 1996, whichever is later, if said addition meets the criteria 
specified in paragraphs (i)(1)(i)(A) through (i)(1)(i)(B) and either 
(i)(1)(i)(C) or (i)(1)(i)(D) of this section:
    (A) Said addition meets the definition of construction in Sec. 63.2;
    (B) Such construction commenced after March 29, 1995; and
    (C) Said addition has the potential to emit 10 tons per year or more 
of any HAP or 25 tons per year or more of any combination of HAP, and 
the primary product of said addition is currently produced at the plant 
site as the primary product of an affected source; or
    (D) The primary product of said addition is not currently produced 
at the plant site as the primary product of an affected source and the 
plant site meets, or after the addition is completed will meet, the 
definition of major source.
    (ii) If a TPPU is added to a plant site, said addition shall be 
subject to the requirements for an existing affected source in this 
subpart upon initial start-up or by 3 years after September 12, 1996, 
whichever is later, if said addition does not meet the criteria 
specified in paragraph (i)(1)(i) of this section and the plant site 
meets, or after the addition is completed will meet, the definition of 
major source.
    (2) Adding emission points or making process changes to existing 
affected sources. The provisions of paragraphs (i)(2)(i) through 
(i)(2)(ii) of this section apply to owners or operators that add 
emission points or make process changes to an existing affected source.
    (i) If any process change is made or emission point is added to an 
existing affected source, or if a process change creating one or more 
additional Group 1 emission point(s) is made to an existing affected 
source, said affected source shall be a new affected source and shall be 
subject to the requirements for a new affected source in this subpart 
upon initial start-up or by September 12, 1996, whichever is later, if 
said process change or addition meets the criteria specified in 
paragraphs (i)(2)(i)(A) through (i)(2)(i)(B) of this section:
    (A) Said process change or addition meets the definition of 
reconstruction in Sec. 63.2; and
    (B) Such reconstruction commenced after March 29, 1995.
    (ii) If any process change is made or emission point is added to an 
existing affected source, or if a process change creating one or more 
additional Group 1 emission point(s) is made to an existing affected 
source and said process change or addition does not meet the criteria 
specified in paragraphs (i)(2)(i)(A) through (i)(2)(i)(B) of this 
section, the resulting emission point(s) shall be subject to the 
requirements for an existing affected source in this subpart. Said 
emission point(s) shall be in compliance upon initial start-up or by

[[Page 179]]

3 years after September 12, 1996, whichever is later, unless the owner 
or operator demonstrates to the Administrator that achieving compliance 
will take longer than making said process change or addition. If this 
demonstration is made to the Administrator's satisfaction, the owner or 
operator shall follow the procedures in paragraphs (i)(2)(iii)(A) 
through (i)(2)(iii)(C) of this section to establish a compliance date.
    (iii) To establish a compliance date for an emission point or points 
specified in paragraph (i)(2)(ii) of this section, the procedures 
specified in paragraphs (i)(2)(iii)(A) through (i)(2)(iii)(C) of this 
section shall be followed.
    (A) The owner or operator shall submit to the Administrator for 
approval a compliance schedule, along with a justification for the 
schedule.
    (B) The compliance schedule shall be submitted within 180 days after 
the process change or addition is made or the information regarding said 
change or addition is known to the owner or operator, unless the 
compliance schedule has been previously submitted to the permitting 
authority. The compliance schedule may be submitted in the next Periodic 
Report if the process change or addition is made after the date the 
Notification of Compliance Status report is due.
    (C) The Administrator shall approve the compliance schedule or 
request changes within 120 calendar days of receipt of the compliance 
schedule and justification.
    (3) Existing source requirements for Group 2 emission points that 
become Group 1 emission points. If a process change or addition that 
does not meet the criteria in paragraph (i)(1) or (i)(2) of this section 
is made to an existing plant site or existing affected source, and the 
change causes a Group 2 emission point to become a Group 1 emission 
point, for said emission point, the owner or operator shall comply with 
the requirements of this subpart for existing Group 1 emission points. 
Compliance shall be achieved as expeditiously as practicable, but in no 
event later than 3 years after said emission point becomes a Group 1 
emission point.
    (4) Existing source requirements for some emission points that 
become subject to the requirements of subpart H of this part. If a 
compressor becomes subject to Sec. 63.164, the owner or operator shall 
be in compliance upon initial start-up or by 3 years after September 12, 
1996, whichever is later, unless the owner or operator demonstrates to 
the Administrator that achieving compliance will take longer than making 
the change. If this demonstration is made to the Administrator's 
satisfaction, the owner or operator shall follow the procedures in 
paragraphs (i)(2)(iii)(A) through (i)(2)(iii)(C) of this section to 
establish a compliance date.
    (5) Determining what are and are not process changes. For purposes 
of paragraph (i) of this section, examples of process changes include, 
but are not limited to, changes in production capacity, feedstock type, 
or catalyst type, or whenever there is a replacement, removal, or the 
addition of recovery equipment. For purposes of paragraph (i) of this 
section, process changes do not include: process upsets, unintentional 
temporary process changes, and changes that are within the equipment 
configuration and operating conditions documented in the Notification of 
Compliance Status report required by Sec. 63.1335(e)(5).
    (j) Applicability of this subpart except during periods of start-up, 
shutdown, and malfunction. Each provision set forth in this subpart or 
referred to in this subpart shall apply at all times except during 
periods of start-up, shutdown, and malfunction if the start-up, 
shutdown, or malfunction precludes the ability of a particular emission 
point of an affected source to comply with one or more specific 
provisions to which it is subject. Start-up, shutdown, and malfunction 
is defined in Sec. 63.1312 for all emission points except equipment 
leaks subject to subpart H of this part, which shall follow the 
provisions for periods of start-up, malfunction, and process unit 
shutdown, as defined in Sec. 63.161. Only then shall an emission point 
not be required to comply with all applicable provisions of this 
subpart.

[[Page 180]]



Sec. 63.1311  Compliance schedule and relationship to existing applicable rules.

    (a) Affected sources are required to achieve compliance on or before 
the dates specified in paragraphs (b) through (d) of this section. 
Paragraph (e) of this section provides information on requesting 
compliance extensions. Paragraphs (f) through (l) of this section 
discuss the relationship of this subpart to subpart A of this part and 
to other applicable rules. Where an override of another authority of the 
Act is indicated in this subpart, only compliance with the provisions of 
this subpart is required. Paragraph (m) of this section specifies the 
meaning of time periods.
    (b) New affected sources that commence construction or 
reconstruction after March 29, 1995 shall be in compliance with this 
subpart upon initial start-up or February 27, 1998, whichever is later, 
as provided in Sec. 63.6(b), except that new affected sources whose 
primary product, as determined using the procedures specified in 
Sec. 63.1310(f), is poly(ethylene terephthalate) (PET) shall be in 
compliance with Sec. 63.1331 upon initial start-up or February 27, 2001, 
whichever is later.

    [Note: The compliance date for new affected sources with an initial 
start-up date on or after March 9, 1999 is stayed indefinitely. The EPA 
will publish a document in the Federal Register establishing a new 
compliance date for new affected sources with an initial start-up date 
on or after March 9, 1999.]

    (c) Existing affected sources shall be in compliance with this 
subpart (except for Sec. 63.1331 for which compliance is covered by 
paragraph (d) of this section) no later than September 12, 1999, as 
provided in Sec. 63.6(c), unless an extension has been granted as 
specified in paragraph (e) of this section, except that the compliance 
date for the provisions contained in Sec. 63.1329 is extended from 
September 12, 1999 to February 27, 2001, for existing affected sources 
whose primary product, as determined using the procedures specified in 
63.1310(f), is PET using a continuous terephthalic acid high viscosity 
multiple end finisher process.

    [Note: The compliance date of September 12, 1999 for existing 
affected sources, except for emission points addressed under 
Sec. 63.1331, which are covered by paragraph (d) of this section, is 
stayed indefinitely. The EPA will publish a document in the Federal 
Register establishing a new compliance date for existing affected 
sources.]
    (d) Except as provided for in paragraphs (d)(1) through (d)(6) of 
this section, existing affected sources shall be in compliance with 
Sec. 63.1331 no later than February 27, 1998 unless a request for a 
compliance extension is granted pursuant to section 112(i)(3)(B) of the 
Act, as discussed in Sec. 63.182(a)(6).
    (1) Compliance with the compressor provisions of Sec. 63.164 shall 
occur no later than February 27, 1998 for any compressor meeting one or 
more of the criteria in paragraphs (d)(1)(i) through (d)(1)(iii) of this 
section if the work can be accomplished without a process unit shutdown, 
as defined in Sec. 63.161:
    (i) The seal system will be replaced;
    (ii) A barrier fluid system will be installed;
    (iii) A new barrier fluid will be utilized which requires changes to 
the existing barrier fluid system; or
    (iv) The compressor will be modified to permit connecting the 
compressor to a fuel gas system or a closed vent system or modified so 
that emissions from the compressor can be routed to a process.
    (2) Compliance with the compressor provisions of Sec. 63.164 shall 
occur no later than March 12, 1998, for any compressor meeting all the 
criteria in paragraphs (d)(2)(i) through (d)(2)(ii) of this section.
    (i) The compressor meets one or more of the criteria specified in 
paragraphs (d)(1)(i)(A) through (d)(1)(i)(B) of this section:
    (A) The work can be accomplished without a process unit shutdown as 
defined in Sec. 63.161; or
    (B) The additional time is actually necessary due to the 
unavailability of parts beyond the control of the owner or operator.
    (ii) The owner or operator submits the request for a compliance 
extension to the U.S. Environmental Protection Agency (EPA) Regional 
Office at the addresses listed in Sec. 63.13 no later than June 16, 
1997. The request for a compliance extension shall contain the 
information specified in Sec. 63.6(i)(6)(i) (A), (B), and (D). Unless 
the EPA Regional

[[Page 181]]

Office objects to the request for a compliance extension within 30 
calendar days after receipt of the request, the request shall be deemed 
approved.
    (3) If compliance with the compressor provisions of Sec. 63.164 
cannot reasonably be achieved without a process unit shutdown, as 
defined in Sec. 63.161, the owner or operator shall achieve compliance 
no later than September 14, 1998. The owner or operator who elects to 
use this provision shall submit a request for a compliance extension in 
accordance with the requirements of paragraph (d)(2)(ii) of this 
section.
    (4) Compliance with the compressor provisions of Sec. 63.164 shall 
occur not later than September 12, 1999 for any compressor meeting one 
or more of the criteria in paragraphs (d)(4)(i) through (d)(4)(iii) of 
this section. The owner or operator who elects to use these provisions 
shall submit a request for an extension of compliance in accordance with 
the requirements of paragraph (d)(2)(iv) of this section.
    (i) Compliance cannot be achieved without replacing the compressor;
    (ii) Compliance cannot be achieved without recasting the distance 
piece; or
    (iii) Design modifications are required to connect to a closed-vent 
or recovery system.
    (5) Compliance with the provisions of Sec. 63.170 shall occur no 
later than September 13, 1999.
    (6) Notwithstanding paragraphs (d)(1) through (d)(4) of this 
section, existing affected sources whose primary product, as determined 
using the procedures specified in Sec. 63.1310(f), is PET shall be in 
compliance with Sec. 63.1331 no later than February 27, 2001.
    (e) Pursuant to section 112(i)(3)(B) of the Act, an owner or 
operator may request an extension allowing the existing source up to 1 
additional year to comply with section 112(d) standards. For purposes of 
this subpart, a request for an extension shall be submitted to the 
operating permit authority as part of the operating permit application 
or to the Administrator as a separate submittal or as part of the 
Precompliance Report. Requests for extensions shall be submitted no 
later than the date the Precompliance Report is required to be submitted 
in Sec. 63.1335(e)(3)(i). The dates specified in Sec. 63.6(i) for 
submittal of requests for extensions shall not apply to this subpart.
    (1) A request for an extension of compliance shall include the data 
described in Sec. 63.6(i)(6)(i) (A),(B), and (D).
    (2) The requirements in Sec. 63.6(i)(8) through Sec. 63.6(i)(14) 
shall govern the review and approval of requests for extensions of 
compliance with this subpart.
    (f) Table 1 of this subpart specifies the provisions of subpart A of 
this part that apply and those that do not apply to owners and operators 
of affected sources subject to this subpart.
    (g)(1) After the compliance dates specified in this section, an 
affected source subject to this subpart that is also subject to the 
provisions of subpart I of this part, is required to comply only with 
the provisions of this subpart. After the compliance dates specified in 
this section, said affected source shall no longer be subject to subpart 
I of this part.
    (2) Said affected sources that elected to comply with subpart I of 
this part through a quality improvement program, as specified in 
Sec. 63.175 or Sec. 63.176 or both, may elect to continue these programs 
without interruption as a means of complying with this subpart. In other 
words, becoming subject to this subpart does not restart or reset the 
``compliance clock'' as it relates to reduced burden earned through a 
quality improvement program.
    (h) After the compliance dates specified in this section, a storage 
vessel that belongs to an affected source subject to this subpart that 
is also subject to the provisions of 40 CFR part 60, subpart Kb, is 
required to comply only with the provisions of this subpart. After the 
compliance dates specified in this section, said storage vessel shall no 
longer be subject to 40 CFR part 60, subpart Kb.
    (i)(1) Except as provided in paragraph (i)(2) of this section, after 
the compliance dates specified in this section, affected sources 
producing PET using a continuous terephthalic acid process, producing 
PET using a continuous dimethyl terephthalate process, or producing 
polystyrene resin using a continuous process subject to this subpart 
that are also subject to the provisions

[[Page 182]]

of 40 CFR part 60, subpart DDD, are required to comply only with the 
provisions of this subpart. After the compliance dates specified in this 
section, said sources shall no longer be subject to 40 CFR part 60, 
subpart DDD.
    (2) Existing affected sources producing PET using a continuous 
terephthalic acid high viscosity multiple end finisher process shall 
continue to be subject to 40 CFR 60.562-1(c)(2)(ii)(C). Once said 
affected source becomes subject to and achieves compliance with 
Sec. 63.1329(c) of this subpart, said affected source is no longer 
subject to the provisions of 40 CFR part 60, subpart DDD.
    (j) Affected sources subject to this subpart that are also subject 
to the provisions of subpart Q of this part shall comply with both 
subparts.
    (k) After the compliance dates specified in this section, an 
affected source subject to this subpart that is also subject to the 
provisions of 40 CFR part 60, subpart VV, is required to comply only 
with the provisions of this subpart. After the compliance dates 
specified in this section, said source shall no longer be subject to 40 
CFR part 60, subpart VV.
    (l) After the compliance dates specified in this section, a 
distillation operation that belongs to an affected source subject to 
this subpart that is also subject to the provisions of 40 CFR part 60, 
subpart NNN, is required to comply only with the provisions of this 
subpart. After the compliance dates specified in this section, said 
distillation operation shall no longer be subject to 40 CFR part 60, 
subpart NNN.
    (m) All terms in this subpart that define a period of time for 
completion of required tasks (e.g., weekly, monthly, quarterly, annual), 
unless specified otherwise in the section or subsection that imposes the 
requirement, refer to the standard calendar periods.
    (1) Notwithstanding time periods specified in this subpart for 
completion of required tasks, such time periods may be changed by mutual 
agreement between the owner or operator and the Administrator, as 
specified in subpart A of this part (e.g., a period could begin on the 
compliance date or another date, rather than on the first day of the 
standard calendar period). For each time period that is changed by 
agreement, the revised period shall remain in effect until it is 
changed. A new request is not necessary for each recurring period.
    (2) Where the period specified for compliance is a standard calendar 
period, if the initial compliance date occurs after the beginning of the 
period, compliance shall be required according to the schedule specified 
in paragraphs (m)(i) or (m)(ii) of this section, as appropriate.
    (i) Compliance shall be required before the end of the standard 
calendar period within which the compliance deadline occurs, if there 
remain at least 3 days for tasks that must be performed weekly, at least 
2 weeks for tasks that must be performed monthly, at least 1 month for 
tasks that must be performed each quarter, or at least 3 months for 
tasks that must be performed annually; or
    (ii) In all other cases, compliance shall be required before the end 
of the first full standard calendar period after the period within which 
the initial compliance deadline occurs.
    (3) In all instances where a provision of this subpart requires 
completion of a task during each multiple successive period, an owner or 
operator may perform the required task at any time during the specified 
period, provided that the task is conducted at a reasonable interval 
after completion of the task during the previous period.

[61 FR 48229, Sept. 12, 1996, as amended at 62 FR 1838, Jan. 14, 1997; 
62 FR 30995, June 6, 1997; 63 FR 9945, Feb. 27, 1998; 63 FR 15315, Mar. 
31, 1998; 64 FR 11547, Mar. 9, 1999; 64 FR 30409, June 8, 1999; 64 FR 
35028, June 30, 1999]

    Effective Date Notes: 1. At 64 FR 30409, June 8, 1999, Sec. 63.1311 
was amended by revising paragraphs (b) and (d)(6), effective Aug. 9, 
1999. For the convenience of the user, the supersed text is set forth as 
follows:

Sec. 63.1311  Compliance schedule and relationship to existing 
          applicable rules.

                                * * * * *

    (b) New affected sources that commence construction or 
reconstruction after March 29, 1995, shall be in compliance with this 
subpart upon initial start-up or February 27, 1998, whichever is later, 
as provided in Sec. 63.6(b), except that new affected sources whose 
primary product, as determined using the procedures specified in 
Sec. 63.1310(f), is

[[Page 183]]

poly(ethylene terephthalate) (PET) shall be in compliance with 
Sec. 63.1331 upon initial start-up or by September 12, 1999, whichever 
is later.

                                * * * * *

    (d) * * *
    (6) Notwithstanding paragraphs (d)(1) through (d)(4) of this 
section, existing affected sources whose primary product, as determined 
using the procedures specified in Sec. 63.1310(f), is PET shall be in 
compliance with Sec. 63.1331 no later than September 12, 1999.

                                * * * * *

    2. At 64 FR 35028, June 30, 1999, Sec. 63.1311 was amended by 
revising paragraphs (b) and (c), effective Aug. 30, 1999. For the 
convenience of the user, paragraph (b) in effect from Aug. 9, 1999 until 
Aug. 30, 1999 and paragraph (c) is set forth as follows:

Sec. 63.1311  Compliance schedule and relationship to existing 
          applicable rules.

                                * * * * *

    (b) New affected sources that commence construction or 
reconstruction after March 29, 1995 shall be in compliance with this 
subpart upon initial start-up or September 12, 1996, whichever is later, 
as provided in Sec. 63.6(b), except that new affected sources whose 
primary product, as determined using the procedures specified in 
Sec. 63.1310(f), is PET shall be in compliance with Sec. 63.1331 upon 
initial start-up or February 27, 2001, whichever is later.
    (c) Existing affected sources shall be in compliance with this 
subpart (except for Sec. 63.1331 for which compliance is covered by 
paragraph (d) of this section) no later than September 12, 1999, as 
provided in Sec. 63.6(c), unless an extension has been granted as 
specified in paragraph (e) of this section, except that the compliance 
date for the provisions contained in 40 CFR 63.1329 is temporarily 
extended from September 12, 1999, to February 27, 2001, for existing 
affected sources whose primary product, as determined using the 
procedures specified in Sec. 63.1310(f), is PET using a continuous 
terephthalic acid high viscosity multiple end finisher process.

                                * * * * *



Sec. 63.1312  Definitions.

    (a) The following terms used in this subpart shall have the meaning 
given them in Sec. 63.2, Sec. 63.101, Sec. 63.111, and Sec. 63.161 as 
specified after each term:
Act (Sec. 63.2)
Administrator (Sec. 63.2)
Automated monitoring and recording system (Sec. 63.111)
Average concentration (Sec. 63.111)
Boiler (Sec. 63.111)
Bottoms receiver (Sec. 63.161)
By compound (Sec. 63.111)
By-product (Sec. 63.101)
Car-seal (Sec. 63.111)
Chemical manufacturing process unit (Sec. 63.101)
Closed-vent system (Sec. 63.111)
Co-product (Sec. 63.101)
Combustion device (Sec. 63.111)
Commenced (Sec. 63.2)
Compliance date (Sec. 63.2)
Compliance schedule (Sec. 63.2)
Connector (Sec. 63.161)
Construction (Sec. 63.2)
Continuous monitoring system (Sec. 63.2)
Continuous record (Sec. 63.111)
Continuous recorder (Sec. 63.111)
Cover (Sec. 63.111)
Distillation unit (Sec. 63.111)
Emission standard (Sec. 63.2)
Emissions averaging (Sec. 63.2)
EPA (Sec. 63.2)
Equipment (Sec. 63.161)
Equipment leak (Sec. 63.101)
Existing source (Sec. 63.2)
External floating roof (Sec. 63.111)
Fill (Sec. 63.111)
Fixed roof (Sec. 63.111)
Flame zone (Sec. 63.111)
Flexible operation unit (Sec. 63.101)
Floating roof (Sec. 63.111)
Flow indicator (Sec. 63.111)
Group 1 wastewater streams (Sec. 63.111)
Group 2 wastewater streams (Sec. 63.111)
Halogens and hydrogen halides (Sec. 63.111)
Hazardous air pollutant (Sec. 63.2)
Impurity (Sec. 63.101)
In organic hazardous air pollutant service (Sec. 63.161)
Incinerator (Sec. 63.111)
Instrumentation system (Sec. 63.161)
Internal floating roof (Sec. 63.111)
Lesser quantity (Sec. 63.2)
Major source (Sec. 63.2)
Malfunction (Sec. 63.2)
Mass flow rate (Sec. 63.111)
Maximum true vapor pressure (Sec. 63.111)
New source (Sec. 63.2)
Open-ended valve or line (Sec. 63.161)
Operating permit (Sec. 63.101)
Organic HAP service (Sec. 63.161)
Organic monitoring device (Sec. 63.111)
Owner or operator (Sec. 63.2)
Performance evaluation (Sec. 63.2)
Performance test (Sec. 63.2)

[[Page 184]]

Permitting authority (Sec. 63.2)
Plant site (Sec. 63.101)
Point of generation (Sec. 63.111)
Potential to emit (Sec. 63.2)
Primary fuel (Sec. 63.111)
Process heater (Sec. 63.111)
Process unit shutdown (Sec. 63.161)
Process wastewater (Sec. 63.101)
Process wastewater stream (Sec. 63.111)
Product separator (Sec. 63.111)
Reactor (Sec. 63.111)
Reconstruction (Sec. 63.2)
Recovery device (Sec. 63.111)
Reference control technology for process vents (Sec. 63.111)
Reference control technology for storage vessels (Sec. 63.111)
Reference control technology for wastewater (Sec. 63.111)
Relief valve (Sec. 63.111)
Research and development facility (Sec. 63.101)
Residual (Sec. 63.111)
Run (Sec. 63.2)
Secondary fuel (Sec. 63.111)
Sensor (Sec. 63.161)
Shutdown (Sec. 63.2)
Specific gravity monitoring device (Sec. 63.111)
Start-up (Sec. 63.2)
Start-up, shutdown, and malfunction plan (Sec. 63.101)
State (Sec. 63.2)
Surge control vessel (Sec. 63.161)
Temperature monitoring device (Sec. 63.111)
Test method (Sec. 63.2)
Total resource effectiveness index value (Sec. 63.111)
Treatment process (Sec. 63.111)
Unit operation (Sec. 63.101)
Visible emission (Sec. 63.2)
Waste management unit (Sec. 63.111)
Wastewater (Sec. 63.101)
Wastewater stream (Sec. 63.111)

    (b) All other terms used in this subpart shall have the meaning 
given them in this section. If a term is defined in Secs. 63.2, 63.101, 
63.111, or 63.161 and in this section, it shall have the meaning given 
in this section for purposes of this subpart.
    Acrylonitrile butadiene styrene latex resin (ABS latex) means ABS 
produced through an emulsion process, however the product is not 
coagulated or dried as typically occurs in an emulsion process.
    Acrylonitrile butadiene styrene resin (ABS) means styrenic 
terpolymers consisting primarily of acrylonitrile, 1,3-butadiene, and 
styrene monomer units. ABS is usually composed of a styrene-
acrylonitrile copolymer continuous phase with dispersed butadiene 
derived rubber.
    Acrylonitrile styrene acrylate resin (ASA) means a resin formed 
using acrylic ester-based elastomers to impact-modify styrene 
acrylonitrile resin matrices.
    Aggregate batch vent stream means a gaseous emission stream 
containing only the exhausts from two or more batch process vents that 
are ducted together before being routed to a control device that is in 
continuous operation.
    Affected source is defined in Sec. 63.1310(a).
    Alpha methyl styrene acrylonitrile resin (AMSAN) means copolymers 
consisting primarily of alpha methyl styrene and acrylonitrile.
    Average flow rate, as used in conjunction with wastewater 
provisions, is determined by the specifications in Sec. 63.144(c); or, 
as used in conjunction with batch process vent provisions, is determined 
by the specifications in Sec. 63.1323(e).
    Batch cycle means the operational step or steps, from start to 
finish, that occur as part of a batch unit operation. Batch cycle 
limitation means an enforceable restriction on the number of batch 
cycles that can be performed in a year for an individual batch process 
vent.
    Batch emission episode means a discrete emission venting episode 
associated with a single batch unit operation. Multiple batch emission 
episodes may occur from a single batch unit operation.
    Batch process means a discontinuous process involving the bulk 
movement of material through sequential manufacturing steps. Mass, 
temperature, concentration, and other properties of the process vary 
with time. Addition of raw material and withdrawal of product do not 
typically occur simultaneously in a batch process. For the purposes of 
this subpart, a process producing polymers is characterized as 
continuous or batch based on the operation of the polymerization 
reactors.

[[Page 185]]

    Batch process vent means a point of emission from a batch unit 
operation having a gaseous emission stream with annual organic HAP 
emissions greater than 225 kilograms per year. Batch process vents 
exclude relief valve discharges and leaks from equipment regulated under 
Sec. 63.1331.
    Batch unit operation means a unit operation operated in a batch 
process mode.
    Combustion device burner means a device designed to mix and ignite 
fuel and air to provide a flame to heat and oxidize waste organic vapors 
in a combustion device.
    Compounding unit means a unit operation which blends, melts, and 
resolidifies solid polymers for the purpose of incorporating additives, 
colorants, or stabilizers into the final thermoplastic product. A unit 
operation whose primary purpose is to remove residual monomers from 
polymers is not a compounding unit.
    Continuous process means a process where the inputs and outputs flow 
continuously through sequential manufacturing steps throughout the 
duration of the process. Continuous processes typically approach steady-
state conditions. Continuous processes typically involve the 
simultaneous addition of raw material and withdrawal of product. For the 
purposes of this subpart, a process producing polymers is characterized 
as continuous or batch based on the operation of the polymerization 
reactors.
    Continuous process vent means a point of emission from a continuous 
unit operation within an affected source having a gaseous emission 
stream containing greater than 0.005 weight percent total organic HAP. 
Continuous process vents exclude relief valve discharges and leaks from 
equipment regulated under Sec. 63.1331.
    Continuous unit operation means a unit operation operated in a 
continuous process mode.
    Control device is defined in Sec. 63.111, except that the term 
``process vents'' shall be replaced with the term ``continuous process 
vents subject to Sec. 63.1315'' for the purpose of this subpart.
    Drawing unit means a unit operation which converts polymer into a 
different shape by melting or mixing the polymer and then pulling it 
through an orifice to create a continuously extruded product.
    Emission point means an individual continuous process vent, batch 
process vent, storage vessel, wastewater stream, equipment leak, heat 
exchange system, or process contact cooling tower.
    Emulsion process means a process carried out with the reactants in 
an emulsified form (e.g., polymerization reaction).
    Expandable polystyrene resin (EPS) means a polystyrene bead to which 
a blowing agent has been added using either an in-situ suspension 
process or a post-impregnation suspension process.
    Extruding unit means a unit operation which converts polymer into a 
different shape by melting or mixing the polymer and then forcing it 
through an orifice to create a continuously extruded product.
    Group 1 batch process vent means a batch process vent releasing 
annual organic HAP emissions greater than the level specified in 
Sec. 63.1323(d) and with a cutoff flow rate, calculated in accordance 
with Sec. 63.1323(f), greater than or equal to the annual average flow 
rate.
    Group 2 batch process vent means a batch process vent that does not 
fall within the definition of a Group 1 batch process vent.
    Group 1 continuous process vent means a continuous process vent 
releasing a gaseous emission stream that has a total resource 
effectiveness index value, calculated according to Sec. 63.115, less 
than or equal to 1.0 unless the continuous process vent is associated 
with existing thermoplastic product process units that produce methyl 
methacrylate butadiene styrene resin, then said vent falls within the 
Group 1 definition if the released emission stream has a total resource 
effectiveness index value less than or equal to 3.7.
    Group 2 continuous process vent means a continuous process vent that 
does not fall within the definition of a Group 1 continuous process 
vent.
    Group 1 storage vessel means a storage vessel at an existing 
affected source that meets the applicability criteria specified in Table 
2 or Table 3 of this

[[Page 186]]

subpart, or a storage vessel at a new affected source that meets the 
applicability criteria specified in Table 4 or Table 5 of this subpart.
    Group 2 storage vessel means a storage vessel that does not fall 
within the definition of a Group 1 storage vessel.
    Halogenated aggregate batch vent stream means an aggregate batch 
vent stream determined to have a total mass emission rate of halogen 
atoms contained in organic compounds of 3,750 kilograms per year or 
greater determined by the procedures specified in Sec. 63.1323(h).
    Halogenated batch process vent means a batch process vent determined 
to have a mass emission rate of halogen atoms contained in organic 
compounds of 3,750 kilograms per year or greater determined by the 
procedures specified in Sec. 63.1323(h).
    Halogenated continuous process vent means a continuous process vent 
determined to have a mass emission rate of halogen atoms contained in 
organic compounds of 0.45 kilograms per hour or greater determined by 
the procedures specified in Sec. 63.115(d)(2)(v).
    Heat exchange system means any cooling tower system or once-through 
cooling water system (e.g., river or pond water) designed and operated 
to not allow contact between the cooling medium and process fluid or 
gases (i.e., a noncontact system). A heat exchange system can include 
more than one heat exchanger and can include recirculating or once-
through cooling systems.
    Maintenance wastewater means wastewater generated by the draining of 
process fluid from components in the TPPU into an individual drain 
system prior to or during maintenance activities. Maintenance wastewater 
can be generated during planned and unplanned shutdowns and during 
periods not associated with a shutdown. Examples of activities that can 
generate maintenance wastewater include descaling of heat exchanger 
tubing bundles, cleaning distillation column traps, draining of low legs 
and high point bleeds, draining of pumps into an individual drain 
system, reactor and equipment washdown, and draining of portions of the 
TPPU for repair.
    Mass process means a process carried out through the use of thermal 
energy (e.g., polymerization reaction). Mass processes do not utilize 
emulsifying or suspending agents, but can utilize catalysts or other 
additives.
    Material recovery section means the equipment that recovers 
unreacted or by-product materials from any process section for return to 
the TPPU, off-site purification or treatment, or sale. Equipment used to 
store recovered materials are not included. Equipment designed to 
separate unreacted or by-product material from the polymer product are 
to be included in this process section, provided that at the time of 
initial compliance some of the material is recovered for reuse in the 
process, off-site purification or treatment, or sale. Otherwise, such 
equipment are to be assigned to one of the other process sections, as 
appropriate. If equipment are used to recover unreacted or by-product 
material and return it directly to the same piece of process equipment 
from which it was emitted, then said recovery equipment are considered 
part of the process section that contains the process equipment. On the 
other hand, if equipment are used to recover unreacted or by-product 
material and return it to a different piece of process equipment in the 
same process section, said recovery equipment are considered part of a 
material recovery section. Equipment that treats recovered materials are 
to be included in this process section, but equipment that also treats 
raw materials are not to be included in this process section. The latter 
equipment are to be included in the raw materials preparation section. 
Equipment used for the on-site recovery of ethylene glycol from PET 
plants, however, are not included in the material recovery section; they 
are to be included in the polymerization reaction section. Equipment 
used for the on-site recovery of ethylene glycol and other materials 
(e.g., methanol) from PET plants are not included in the material 
recovery section; these equipment are to be included in the 
polymerization reaction section.
    Methyl methacrylate acrylonitrile butadiene styrene resin (MABS) 
means styrenic polymers containing methyl

[[Page 187]]

methacrylate, acrylonitrile, butadiene, and styrene. MABS is prepared by 
dissolving or dispersing polybutadiene rubber in a mixture of methyl 
methacrylate-acrylonitrile-styrene and butadiene monomer. The graft 
polymerization is carried out by a bulk or a suspension process.
    Methyl methacrylate butadiene styrene resin (MBS) means styrenic 
polymers containing methyl methacrylate, butadiene, and styrene. 
Production of MBS is achieved using an emulsion process in which methyl 
methacrylate and styrene are grafted onto a styrene-butadiene rubber.
    Nitrile resin means a resin produced through the polymerization of 
acrylonitrile, methyl acrylate, and butadiene latex using an emulsion 
process.
    Organic hazardous air pollutant(s) (organic HAP) means one or more 
of the chemicals listed in Table 6 of this subpart or any other chemical 
which is:
    (1) Knowingly introduced into the manufacturing process other than 
as an impurity, or has been or will be reported under any Federal or 
State program, such as Title V or the Emergency Planning and Community 
Right-To-Know Act section 311, 312, or 313; and
    (2) Listed in Table 2 of subpart F of this part.
    PET using a dimethyl terephthalate process means the manufacturing 
of PET based on the esterification of dimethyl terephthalate with 
ethylene glycol to form the intermediate monomer bis-(2-hydroxyethyl)-
terephthalate that is subsequently polymerized to form PET.
    PET using a terephthalic acid process means the manufacturing of PET 
based on the esterification reaction of terephthalic acid with ethylene 
glycol to form the intermediate monomer bis-(2-hydroxyethyl)-
terephthalate that is subsequently polymerized to form PET.
    Poly(ethylene terephthalate) resin (PET) means a polymer or 
copolymer comprised of at least 50 percent bis-(2-hydroxyethyl)-
terephthalate by weight.
    Polymerization reaction section means the equipment designed to 
cause monomer(s) to react to form polymers, including equipment designed 
primarily to cause the formation of short polymer chains (e.g., 
oligomers or low polymers), but not including equipment designed to 
prepare raw materials for polymerization (e.g., esterification vessels). 
For the purposes of these standards, the polymerization reaction section 
begins with the equipment used to transfer the materials from the raw 
materials preparation section and ends with the last vessel in which 
polymerization occurs. Equipment used for the on-site recovery of 
ethylene glycol from PET plants, however, are included in this process 
section, rather than in the material recovery process section.
    Polystyrene resin means a thermoplastic polymer or copolymer 
comprised of at least 80 percent styrene or para-methylstyrene by 
weight.
    Primary product is defined in and determined by the procedures 
specified in Sec. 63.1310(f).
    Process contact cooling tower system means a cooling tower system 
that is designed and operated to allow contact between the cooling 
medium and process fluid or gases.
    Process section means the equipment designed to accomplish a general 
but well-defined task in polymers production. Process sections include, 
but are not limited to, raw materials preparation, polymerization 
reaction, and material recovery. A process section may be dedicated to a 
single TPPU or common to more than one TPPU.
    Process unit means a collection of equipment assembled and connected 
by pipes or ducts to process raw materials and to manufacture a product.
    Process vent means a point of emission from a unit operation having 
a gaseous emission stream. Typical process vents include condenser 
vents, dryer vents, vacuum pumps, steam ejectors, and atmospheric vents 
from reactors and other process vessels, but do not include pressure 
relief valves.
    Product means a compound or material which is manufactured by a 
process unit. By-products, isolated intermediates, impurities, wastes, 
and trace contaminants are not considered products.
    Raw materials preparation section means the equipment at a polymer 
manufacturing plant designed to prepare raw materials, such as monomers 
and solvents, for polymerization. For

[[Page 188]]

the purposes of these standards, this process section begins with the 
equipment used to transfer raw materials from storage and/or the 
equipment used to transfer recovered material from the material recovery 
process sections, and ends with the last piece of equipment that 
prepares the material for polymerization. The raw materials preparation 
section may include equipment that is used to purify, dry, or otherwise 
treat raw materials or raw and recovered materials together; to activate 
catalysts; and to promote esterification including the formation of some 
short polymer chains (oligomers). The raw materials preparation section 
does not include equipment that is designed primarily to accomplish the 
formation of oligomers, the treatment of recovered materials alone, or 
the storage of raw materials.
    Recovery operations equipment means the equipment used to separate 
the components of process streams. Recovery operations equipment 
includes distillation unit, condensers, etc. Equipment used for 
wastewater treatment shall not be considered recovery operations 
equipment.
    Solid state polymerization unit means a unit operation which, 
through the application of heat, furthers the polymerization (i.e., 
increases the intrinsic viscosity) of polymer chips.
    Steady-state conditions means that all variables (temperatures, 
pressures, volumes, flow rates, etc.) in a process do not vary 
significantly with time; minor fluctuations about constant mean values 
can occur.
    Storage vessel means a tank or other vessel that is used to store 
liquids that contain one or more organic HAP and that has been assigned, 
according to the procedures in Sec. 63.1310(g), to a TPPU that is 
subject to this subpart. Storage vessels do not include:
    (1) Vessels permanently attached to motor vehicles such as trucks, 
railcars, barges, or ships;
    (2) Pressure vessels designed to operate in excess of 204.9 
kilopascals and without breathing or working losses to the atmosphere;
    (3) Vessels with capacities smaller than 38 cubic meters;
    (4) Vessels and equipment storing and/or handling material that 
contains no organic HAP and/or organic HAP as impurities only; and
    (5) Wastewater storage tanks.
    Supplemental combustion air means the air that is added to a vent 
stream after the vent stream leaves the unit operation. Air that is part 
of the vent stream as a result of the nature of the unit operation is 
not considered supplemental combustion air. Air required to operate 
combustion device burner(s) is not considered supplemental combustion 
air.
    Styrene acrylonitrile resin (SAN) means copolymers consisting 
primarily of styrene and acrylonitrile monomer units.
    Suspension process means a process carried out with the reactants in 
a state of suspension, typically achieved through the use of water and/
or suspending agents (e.g., polymerization reaction).
    Thermoplastic product means one of the following types of products:
    (1) ABS latex;
    (2) ABS using a batch emulsion process;
    (3) ABS using a batch suspension process;
    (4) ABS using a continuous emulsion process;
    (5) ABS using a continuous mass process;
    (6) ASA/AMSAN;
    (7) EPS;
    (8) MABS;
    (9) MBS;
    (10) nitrile resin;
    (11) PET using a batch dimethyl terephthalate process;
    (12) PET using a batch terephthalic acid process;
    (13) PET using a continuous dimethyl terephthalate process;
    (14) PET using a continuous terephthalic acid process;
    (15) PET using a continuous terephthalic acid high viscosity 
multiple end finisher process;
    (16) Polystyrene resin using a batch process;
    (17) Polystyrene resin using a continuous process;
    (18) SAN using a batch process; or
    (19) SAN using a continuous process.

[[Page 189]]

    Thermoplastic product process unit (TPPU) means a collection of 
equipment assembled and connected by process pipes or ducts, excluding 
gas, sanitary sewage, water (i.e., not wastewater), and steam 
connections, used to process raw materials and to manufacture a 
thermoplastic product as its primary product. This collection of 
equipment includes process vents from process vessels; storage vessels, 
as determined in Sec. 63.1310(g); and the equipment (i.e., pumps, 
compressors, agitators, pressure relief devices, sampling connection 
systems, open-ended valves or lines, valves, connectors, and 
instrumentation systems that are associated with the thermoplastic 
product process unit) that are subject to the equipment leak provisions 
as specified in Sec. 63.1331.
    Total organic compounds (TOC) means those compounds excluding 
methane and ethane measured according to the procedures of Method 18 or 
Method 25A, 40 CFR part 60, appendix A.
    Year means any consecutive 12-month period or 365 rolling days. For 
the purposes of emissions averaging, the term year applies to any 12-
month period selected by the facility and defined in its Emissions 
Averaging Plan. For the purposes of batch cycle limitations, the term 
year applies to the 12-month period defined by the facility in its 
Notification of Compliance Status.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11547, Mar. 9, 1999]



Sec. 63.1313  Emission standards.

    (a) Except as allowed under paragraphs (b) and (c) of this section, 
the owner or operator of an existing or new affected source shall comply 
with the provisions in:
    (1) Section 63.1314 for storage vessels;
    (2) Sections 63.1315 or 63.1316 through 63.1320, as appropriate, for 
continuous process vents;
    (3) Section 63.1321 for batch process vents;
    (4) Section 63.1328 for heat exchange systems;
    (5) Section 63.1329 for process contact cooling towers;
    (6) Section 63.1330 for wastewater;
    (7) Section 63.1331 for equipment leaks;
    (8) Section 63.1333 for additional test methods and procedures;
    (9) Section 63.1334 for parameter monitoring levels and excursions; 
and
    (10) Section 63.1335 for general recordkeeping and reporting 
requirements.
    (b) Instead of complying with Secs. 63.1314, 63.1315, 63.1316 
through 63.1320, 63.1321, and 63.1330, the owner or operator of an 
existing affected source may elect to control any or all of the storage 
vessels, batch process vents, continuous process vents, and wastewater 
streams within the affected source to different levels using an 
emissions averaging compliance approach that uses the procedures 
specified in Sec. 63.1332. An owner or operator electing to use 
emissions averaging must still comply with the provisions of 
Secs. 63.1314, 63.1315, 63.1316 through 63.1320, 63.1321, and 63.1330 
for affected source emission points not included in the emissions 
average.
    (c) A State may decide not to allow the use of the emissions 
averaging compliance approach specified in paragraph (b) of this 
section.



Sec. 63.1314  Storage vessel provisions.

    (a) This section applies to each storage vessel that belongs to an 
affected source, as determined by Sec. 63.1310(g). Except as provided in 
paragraphs (b) through (d) of this section, the owner or operator of 
said storage vessels shall comply with the requirements of Secs. 63.119 
through 63.123 and 63.148, with the differences noted in paragraphs 
(a)(1) through (a)(16) of this section for the purposes of this subpart.
    (1) When the term ``storage vessel'' is used in Secs. 63.119 through 
63.123 and 63.148, the definition of this term in Sec. 63.1312 shall 
apply for the purposes of this subpart.
    (2) When the term ``Group 1 storage vessel'' is used in Secs. 63.119 
through 63.123 and 63.148, the definition of this term in Sec. 63.1312 
shall apply for the purposes of this subpart.
    (3) When the term ``Group 2 storage vessel'' is used in Secs. 63.119 
through 63.123 and 63.148, the definition of this term in Sec. 63.1312 
shall apply for the purposes of this subpart.
    (4) When the emissions averaging provisions of Sec. 63.150 are 
referred to in Secs. 63.119 and 63.123, the emissions averaging 
provisions contained in Sec. 63.1332

[[Page 190]]

shall apply for the purposes of this subpart.
    (5) When December 31, 1992, is referred to in Sec. 63.119, March 29, 
1995 shall apply instead, for the purposes of this subpart.
    (6) When April 22, 1994, is referred to in Sec. 63.119, September 
12, 1996 shall apply instead, for the purposes of this subpart.
    (7) Each owner or operator shall comply with this paragraph (a)(7) 
instead of Sec. 63.120(d)(1)(ii) for the purposes of this subpart. If 
the control device used to comply with this section is also used to 
comply with Secs. 63.1315 through 63.1330, the performance test required 
for these sections is acceptable for demonstrating compliance with 
Sec. 63.119(e) for the purposes of this subpart. The owner or operator 
is not required to prepare a design evaluation for the control device as 
described in Sec. 63.120(d)(1)(i) for the purposes of this subpart if 
the performance test meets the criteria specified in Sec. 63.120 
(d)(1)(ii)(A) and (d)(1)(ii)(B).
    (8) When the term ``operating range'' is used in Sec. 63.120(d)(3), 
the term ``level'' shall apply instead, for the purposes of this 
subpart. This level shall be established using the procedures specified 
in Sec. 63.1334.
    (9) When the Notification of Compliance Status requirements 
contained in Sec. 63.152(b) are referred to in Secs. 63.120, 63.122, and 
63.123, the Notification of Compliance Status requirements contained in 
Sec. 63.1335(e)(5) shall apply for the purposes of this subpart.
    (10) When the Periodic Report requirements contained in 
Sec. 63.152(c) are referred to in Secs. 63.120, 63.122, and 63.123, the 
Periodic Report requirements contained in Sec. 63.1335(e)(6) shall apply 
for the purposes of this subpart.
    (11) When other reports as required in Sec. 63.152(d) are referred 
to in Sec. 63.122, the reporting requirements contained in 
Sec. 63.1335(e)(7) shall apply for the purposes of this subpart.
    (12) When the Implementation Plan requirements contained in 
Sec. 63.151(c) are referred to in Sec. 63.120 and Sec. 63.122, the owner 
or operator of an affected source subject to this subpart need not 
comply for the purposes of this subpart.
    (13) When the Initial Notification Plan requirements contained in 
Sec. 63.151(b) are referred to in Sec. 63.122, the owner or operator of 
an affected source subject to this subpart need not comply for the 
purposes of this subpart.
    (14) When the determination of equivalence criteria in 
Sec. 63.102(b) is referred to in Sec. 63.121(a), the provisions in 
Sec. 63.6(g) shall apply for the purposes of this subpart.
    (15) When a performance test is required under the provisions of 
Sec. 63.120(d)(1)(ii), the use of Method 18 or Method 25A, 40 CFR part 
60, appendix A is allowed for the purposes of this subpart. The use of 
Method 25A, 40 CFR part 60, appendix A shall comply with paragraphs 
(a)(15)(i) and (a)(15)(ii) of this section.
    (i) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (ii) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (16) The compliance date for storage vessels at affected sources 
subject to the provisions of this section is specified in Sec. 63.1311.
    (b) Owners or operators of Group 1 storage vessels that belong to a 
new affected source producing SAN using a continuous process shall 
control emissions to the levels indicated in paragraphs (b)(1) and 
(b)(2) of this section.
    (1) For storage vessels with capacities greater than or equal to 
2,271 cubic meters (m\3\) containing a liquid mixture having a vapor 
pressure greater than or equal to 0.5 kilopascal (kPa) but less than 0.7 
kPa, emissions shall be controlled by at least 90 percent relative to 
uncontrolled emissions.
    (2) For storage vessels with capacities less than 151 m3 
containing a liquid mixture having a vapor pressure greater than or 
equal to 10 kPa, emissions shall be controlled by at least 98 percent 
relative to uncontrolled emissions.

[[Page 191]]

    (3) For all other storage vessels designated as Group 1 storage 
vessels, emissions shall be controlled to the level designated in 
Sec. 63.119.
    (c) Owners or operators of Group 1 storage vessels that belong to a 
new or existing affected source producing ASA/AMSAN shall control 
emissions by at least 98 percent relative to uncontrolled emissions.
    (d) The provisions of this subpart do not apply to storage vessels 
containing ethylene glycol at existing or new affected sources and 
storage vessels containing styrene at existing affected sources.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11547, Mar. 9, 1999]



Sec. 63.1315  Continuous process vents provisions.

    (a) For each continuous process vent located at an affected source, 
the owner or operator shall comply with the requirements of Secs. 63.113 
through 63.118, with the differences noted in paragraphs (a)(1) through 
(a)(18) of this section for the purposes of this subpart, except as 
provided in paragraphs (b) through (e) of this section.
    (1) When the term ``process vent'' is used in Secs. 63.113 through 
63.118, apply the term ``continuous process vent,'' and the definition 
of this term in Sec. 63.1312 shall apply for the purposes of this 
subpart.
    (2) When the term ``Group 1 process vent'' is used in Secs. 63.113 
through 63.118, apply the term ``Group 1 continuous process vent,'' and 
the definition of this term in Sec. 63.1312 shall apply for the purposes 
of this subpart.
    (3) When the term ``Group 2 process vent'' is used in Secs. 63.113 
through 63.118, apply the term ``Group 2 continuous process vent,'' and 
the definition of this term in Sec. 63.1312 shall apply for the purposes 
of this subpart.
    (4) When December 31, 1992, (i.e., subpart G of this part proposal 
date) is referred to in Sec. 63.113, apply the date March 29, 1995 
(i.e., proposal date for this subpart) for the purposes of this subpart.
    (5) When Sec. 63.151(f), alternative monitoring parameters, and 
Sec. 63.152(e), submission of an operating permit, are referred to in 
Secs. 63.114(c) and 63.117(e), Sec. 63.1335(f), alternative monitoring 
parameters, and Sec. 63.1335(e)(8), submission of an operating permit, 
respectively, shall apply for the purposes of this subpart.
    (6) When the Notification of Compliance Status requirements 
contained in Sec. 63.152(b) are referred to in Secs. 63.114, 63.117, and 
63.118, the Notification of Compliance Status requirements contained in 
Sec. 63.1335(e)(5) shall apply for the purposes of this subpart.
    (7) When the Periodic Report requirements contained in 
Sec. 63.152(c) are referred to in Secs. 63.117 and 63.118, the Periodic 
Report requirements contained in Sec. 63.1335(e)(6) shall apply for the 
purposes of this subpart.
    (8) When the definition of excursion in Sec. 63.152(c)(2)(ii)(A) is 
referred to in Sec. 63.118(f)(2), the definition of excursion in 
Sec. 63.1334(f) of this subpart shall apply for the purposes of this 
subpart.
    (9) Owners and operators shall comply with Sec. 63.1334, parameter 
monitoring levels and excursions, instead of Sec. 63.114(e) for the 
purposes of this subpart. When the term ``range'' is used in 
Secs. 63.117 and 63.118, the term ``level'' shall be used instead for 
the purposes of this subpart. This level is determined in accordance 
with Sec. 63.1334.
    (10) If a batch process vent is combined with a continuous process 
vent prior to being routed to a control device, the combined vent stream 
shall comply with either paragraph (a)(10)(i) or (a)(10)(ii) of this 
section, as appropriate.
    (i) If the continuous process vent is a Group 1 continuous process 
vent, the combined vent stream shall comply with all requirements for a 
Group 1 continuous process vent stream in Secs. 63.113 through 63.118, 
with the differences noted in paragraphs (a)(1) through (a)(9) of this 
section, for the purposes of this subpart.
    (ii) If the continuous process vent is a Group 2 continuous process 
vent, the total resource effectiveness (TRE) index value for the 
combined vent stream shall be calculated at the exit of any recovery 
device and prior to the control device at maximum representative 
operating conditions. For combined vent streams containing continuous 
and batch process vents, the maximum representative operating conditions 
shall be during periods when

[[Page 192]]

batch emission episodes are venting to the control device, resulting in 
the highest concentration of organic HAP in the combined vent stream.
    (11) If a batch process vent is combined with a continuous process 
vent prior to being routed to a recovery device, the TRE index value for 
the combined vent stream shall be calculated at the exit of the recovery 
device at maximum representative operating conditions for the purposes 
of this subpart. For combined vent streams containing continuous and 
batch process vents, the maximum representative operating conditions 
shall be during periods when batch emission episodes are venting to the 
recovery device, resulting in the highest concentration of organic HAP 
in the combined vent stream.
    (12) When reports of process changes are required under Sec. 63.118 
(g), (h), (i), and (j), paragraphs (a)(12)(i) through (a)(12)(iv) of 
this section shall apply for the purposes of this subpart.
    (i) For the purposes of this subpart, whenever a process change, as 
defined in Sec. 63.115(e), is made that causes a Group 2 continuous 
process vent to become a Group 1 continuous process vent, the owner or 
operator shall submit a report within 180 operating days after the 
process change is made or the information regarding the process change 
is known to the owner or operator. This report may be included in the 
next Periodic Report, as specified in Sec. 63.1335(e)(6)(iii)(D)(2). The 
following information shall be submitted:
    (A) A description of the process change; and
    (B) A schedule for compliance with the provisions of this subpart, 
as required under Sec. 63.1335(e)(6)(iii)(D)(2).
    (ii) Whenever a process change, as defined in Sec. 63.115(e), is 
made that causes a Group 2 process vent with a TRE greater than 4.0 to 
become a Group 2 process vent with a TRE less than 4.0, the owner or 
operator shall submit a report within 180 operating days after the 
process change is made or the information regarding the process change 
is known to the owner or operator. This report may be included in the 
next Periodic Report, as specified in Sec. 63.1335(e)(6)(iii)(D)(2). The 
following information shall be submitted:
    (A) A description of the process change; and
    (B) A schedule for compliance with the provisions of this subpart, 
as required under Sec. 63.1335(e)(6)(iii)(D)(2).
    (iii) Whenever a process change, as defined in Sec. 63.115(e), is 
made that causes a Group 2 process vent with a flow rate less than 0.005 
standard cubic meter per minute to become a Group 2 process vent with a 
flow rate of 0.005 standard cubic meter per minute or greater and a TRE 
index value less than or equal to 4.0, the owner or operator shall 
submit a report within 180 operating days after the process change is 
made or the information regarding the process change is known to the 
owner or operator. This report may be included in the next Periodic 
Report, as specified in Sec. 63.1335(e)(6)(iii)(D)(2). The following 
information shall be submitted:
    (A) A description of the process change; and
    (B) A schedule for compliance with the provisions of this subpart, 
as required under Sec. 63.1335(e)(6)(iii)(D)(2).
    (iv) Whenever a process change, as defined in Sec. 63.115(e), is 
made that causes a Group 2 process vent with an organic HAP 
concentration less than 50 parts per million by volume to become a Group 
2 process vent with an organic HAP concentration of 50 parts per million 
by volume or greater and a TRE index value less than or equal to 4.0, 
the owner or operator shall submit a report within 180 operating days 
after the process change is made or the information regarding the 
process change is known to the owner or operator. This report may be 
included in the next Periodic Report, as specified in 
Sec. 63.1335(e)(6)(iii)(D)(2). The following information shall be 
submitted:
    (A) A description of the process change; and
    (B) A schedule for compliance with the provisions of this subpart, 
as required under Sec. 63.1335(e)(6)(iii)(D)(2).
    (13) When the provisions of Sec. 63.116 (c)(3) and (c)(4) specify 
that Method 18, 40 CFR part 60, appendix A shall be used, Method 18 or 
Method 25A, 40 CFR part 60, appendix A may be used for the purposes of 
this subpart. The use of Method 25A, 40 CFR part 60, appendix A

[[Page 193]]

shall comply with paragraphs (a)(13)(i) and (a)(13)(ii) of this section.
    (i) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (ii) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (14) When the provisions of Sec. 63.116(b) identify conditions under 
which a performance test is not required, for purposes of this subpart, 
the exemption in paragraph (a)(14)(i) shall also apply. Further, if a 
performance test meeting the conditions specified in paragraph 
(a)(14)(ii) of this section has been conducted by the owner or operator, 
the results of said performance test may be submitted and a performance 
test, as required by this section, is not required.
    (i) An incinerator burning hazardous waste for which the owner or 
operator complies with the requirements of 40 CFR part 264, subpart O.
    (ii) Performance tests done for other subparts in 40 CFR part 60 or 
part 63 where total organic HAP or TOC was measured, provided the owner 
or operator can demonstrate that operating conditions for the process 
and control or recovery device during the performance test are 
representative of current operating conditions.
    (15) The compliance date for continuous process vents subject to the 
provisions of this section is specified in Sec. 63.1311.
    (16)-(17) [Reserved]
    (18) When a combustion device is used to comply with the 20 parts 
per million by volume outlet concentration standard specified in 
Sec. 63.113(a)(2), the correction to 3 percent oxygen is only required 
when supplemental combustion air is used to combust the emissions, for 
the purposes of this subpart. In addition, the correction to 3 percent 
oxygen specified in Sec. 63.116(c)(3) and (c)(3)(iii) is only required 
when supplemental combustion air is used to combust the emissions, for 
the purposes of this subpart. Finally, when a combustion device is used 
to comply with the 20 parts per million by volume outlet concentration 
standard specified in Sec. 63.113(a)(2), an owner or operator shall 
record and report the outlet concentration required in 
Sec. 63.117(a)(4)(ii) and (a)(4)(iv) corrected to 3 percent oxygen when 
supplemental combustion air is used to combust the emissions, for the 
purposes of this subpart. When supplemental combustion air is not used 
to combust the emissions, an owner or operator may record and report the 
outlet concentration required in Sec. 63.117(a)(4)(ii) and (a)(4)(iv) on 
an uncorrected basis or corrected to 3 percent oxygen, for the purposes 
of this subpart.
    (b) Existing affected sources producing MBS shall comply with either 
paragraph (b)(1) or (b)(2) of this section.
    (1) Comply with paragraph (a) of this section, as specified in 
paragraphs (b)(1)(i) and (b)(1)(ii).
    (i) As specified in Sec. 63.1312, Group 1 continuous process vents 
at MBS existing affected sources are those with a total resource 
effectiveness value less than or equal to 3.7.
    (ii) When complying with this paragraph (b), the term ``TRE of 
4.0'', or related terms indicating a TRE value of 4.0, referred to in 
Sec. 63.113 through Sec. 63.118 shall be replaced with ``TRE of 6.7,'' 
for the purposes of this subpart. The TRE range of 3.7 to 6.7 for 
continuous process vents at existing affected sources producing MBS 
corresponds to the TRE range of 1.0 to 4.0 for other continuous process 
vents, as it applies to monitoring, recordkeeping, and reporting.
    (2) Not allow organic HAP emissions from the collection of 
continuous process vents at the affected source to be greater than 
0.000590 kg organic HAP/Mg of product. Compliance with this paragraph 
(b)(2) shall be determined using the procedures specified in 
Sec. 63.1333(b).
    (c) New affected sources producing SAN using a batch process shall 
comply with the applicable requirements in Sec. 63.1321.
    (d) Affected sources producing PET or polystyrene using a continuous 
process are subject to the emissions

[[Page 194]]

control provisions of Sec. 63.1316, the monitoring provisions of 
Sec. 63.1317, the testing and compliance demonstration provisions of 
Sec. 63.1318, the recordkeeping provisions of Sec. 63.1319, and the 
reporting provisions of Sec. 63.1320.
    (e) Owners or operators of affected sources producing ASA/AMSAN 
shall reduce organic HAP emissions from each continuous process vent, 
each batch process vent, and each aggregate batch vent stream by 98 
weight-percent and shall comply with either paragraph (e)(1), (e)(2), or 
(e)(3), as appropriate. Where batch process vents or aggregate batch 
vent streams are combined with continuous process vents, the provisions 
of paragraph (a)(13) of this section shall apply for the purposes of 
this paragraph (e).
    (1) For each continuous process vent, comply with paragraph (a) of 
this section as specified in paragraphs (e)(1)(i) through (e)(1)(ii) of 
this section.
    (i) For purpose of this section, each continuous process vent shall 
be considered to be a Group 1 continuous process vent and the owner or 
operator of that continuous process vent shall comply with the 
requirements for a Group 1 continuous process vent.
    (ii) For purposes of this section, the group determination procedure 
required by Sec. 63.115 shall not apply.
    (2) For each batch process vent, comply with Secs. 63.1321 through 
63.1327 as specified in paragraphs (e)(2)(i) through (e)(2)(ii) of this 
section.
    (i) For purpose of this section, each batch process vent shall be 
considered to be a Group 1 batch process vent and the owner or operator 
of that batch process vent shall comply with the requirements for a 
Group 1 batch process vent contained in Secs. 63.1321 through 63.1327, 
except that each batch process vent shall be controlled to reduce 
organic HAP emissions by 98 weight-percent.
    (ii) For purposes of this section, the group determination procedure 
required by Sec. 63.1323 shall not apply.
    (3) For each aggregate batch vent stream, comply with Secs. 63.1321 
through 63.1327 as specified in paragraphs (e)(3)(i) through (e)(3)(ii) 
of this section.
    (i) For purpose of this section, each aggregate batch vent stream 
shall be considered to be a Group 1 aggregate batch vent stream and the 
owner or operator of that aggregate batch vent stream shall comply with 
the requirements for a Group 1 aggregate batch vent stream contained in 
Secs. 63.1321 through 63.1327, except that each aggregate batch vent 
stream shall be controlled to reduce organic HAP emissions by 98 weight-
percent.
    (ii) For purposes of this section, the group determination procedure 
required by Sec. 63.1323 shall not apply.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11547, Mar. 9, 1999]



Sec. 63.1316  PET and polystyrene affected sources--emissions control provisions.

    (a) The owner or operator of an affected source producing PET using 
a continuous process shall comply with paragraph (b) of this section. 
The owner or operator of an affected source producing polystyrene using 
a continuous process shall comply with paragraph (c) of this section.
    (b) Each owner or operator of an affected source producing PET using 
a continuous process shall comply with the requirements specified in 
paragraphs (b)(1) or (b)(2) of this section, as appropriate, and not 
with any of the requirements specified in 40 CFR part 60, subpart DDD. 
Compliance can be based on either organic HAP or TOC.
    (1) Each owner or operator of an affected source producing PET using 
a continuous dimethyl terephthalate process shall comply with paragraphs 
(b)(1)(i) through (b)(1)(iv) of this section.
    (i) The owner or operator of an existing affected source with 
organic HAP emissions greater than 0.12 kg organic HAP per Mg of product 
from continuous process vents in the collection of material recovery 
sections (i.e., methanol recovery) within the affected source shall 
comply with either paragraph (b)(1)(i)(A), (b)(1)(i)(B), or (b)(1)(i)(C) 
of this section. Emissions from continuous process vents in the 
collection of material recovery sections within the affected source 
shall be determined by the procedures specified in Sec. 63.1318(b). The 
owner or operator of a new affected source shall comply with either 
paragraph (b)(1)(i)(A),

[[Page 195]]

(b)(1)(i)(B), or (b)(1)(i)(C) of this section.
    (A) Organic HAP emissions from all continuous process vents in each 
individual material recovery section shall, as a whole, be no greater 
than 0.018 kg organic HAP per Mg of product from the associated TPPU(s); 
or alternatively, organic HAP emissions from all continuous process 
vents in the collection of material recovery sections within the 
affected source shall, as a whole, be no greater than 0.018 kg organic 
HAP per Mg product from all associated TPPU(s);
    (B) As specified in Sec. 63.1318(d), the owner or operator shall 
maintain the daily average outlet gas stream temperature from each final 
condenser in a material recovery section at a temperature of +3 deg.C 
(+37 deg.F) or less (i.e., colder); or
    (C) Comply with paragraph (b)(1)(v) of this section.
    (ii) Limit organic HAP emissions from continuous process vents in 
the collection of polymerization reaction sections within the affected 
source by complying with either paragraph (b)(1)(ii)(A) or (b)(1)(ii)(B) 
of this section.
    (A) Organic HAP emissions from all continuous process vents in each 
individual polymerization reaction section within the affected source 
(including emissions from any equipment used to further recover ethylene 
glycol, but excluding emissions from process contact cooling towers) 
shall, as a whole, be no greater than 0.02 kg organic HAP per Mg of 
product from the associated TPPU(s); or alternatively, organic HAP 
emissions from all continuous process vents in the collection of 
polymerization reaction sections within the affected source shall, as a 
whole, be no greater than 0.02 kg organic HAP per Mg product from all 
associated TPPU(s); or
    (B) Comply with paragraph (b)(1)(v) of this section.
    (iii) Limit organic HAP emissions from continuous process vents not 
included in a material recovery section, as specified in paragraph 
(b)(1)(i) of this section, or not included in a polymerization reaction 
section, as specified in paragraph (b)(1)(ii) of this section, by 
complying with Sec. 63.1315.
    (iv) Limit organic HAP emissions from all batch process vents by 
complying with Sec. 63.1321.
    (v) Comply with one of the following:
    (A) Reduce the emissions in a combustion device to achieve 98 weight 
percent reduction or to achieve a concentration of 20 parts per million 
by volume (ppmv) on a dry basis, whichever is less stringent. If an 
owner or operator elects to comply with the 20 ppmv standard, the 
concentration shall include a correction to 3 percent oxygen only when 
supplemental combustion air is used to combust the emissions;
    (B) Combust the emissions in a boiler or process heater with a 
design heat input capacity of 150 million Btu/hr or greater by 
introducing the emissions into the flame zone of the boiler or process 
heater; or
    (C) Combust the emissions in a flare that complies with the 
requirements of Sec. 63.1333(e).
    (2) Each owner or operator of an affected source producing PET using 
a continuous terephthalic acid process shall comply with paragraphs 
(b)(2)(i) through (b)(2)(iv) of this section.
    (i) Limit organic HAP emissions from continuous process vents in the 
collection of raw material preparation sections within the affected 
source by complying with either paragraph (b)(2)(i)(A) or (b)(2)(i)(B) 
of this section.
    (A) Organic HAP emissions from all continuous process vents 
associated with the esterification vessels in each individual raw 
materials preparation section shall, as a whole, be no greater than 0.04 
kg organic HAP per Mg of product from the associated TPPU(s); or 
alternatively, organic HAP emissions from all continuous process vents 
associated with the esterification vessels in the collection of raw 
material preparation sections within the affected source shall, as a 
whole, be no greater than 0.04 kg organic HAP per Mg of product from all 
associated TPPU(s). Other continuous process vents (i.e., those not 
associated with the esterification vessels) in the collection of raw 
materials preparation sections within the affected source shall comply 
with Sec. 63.1315; or
    (B) Comply with paragraph (b)(2)(v) of this section.

[[Page 196]]

    (ii) Limit organic HAP emissions from continuous process vents in 
the collection of polymerization reaction sections within the affected 
source by complying with either paragraph (b)(2)(ii)(A) or (b)(2)(ii)(B) 
of this section.
    (A) Organic HAP emissions from all continuous process vents in each 
individual polymerization reaction section (including emissions from any 
equipment used to further recover ethylene glycol, but excluding 
emissions from process contact cooling towers) shall, as a whole, be no 
greater than 0.02 kg organic HAP per Mg of product from the associated 
TPPU(s); or alternatively, organic HAP emissions from all continuous 
process vents in the collection of polymerization reaction sections 
within the affected source shall, as a whole, be no greater than 0.02 kg 
organic HAP per Mg of product from all associated TPPU(s); or
    (B) Comply with paragraph (b)(2)(v) of this section.
    (iii) Limit organic HAP emissions from continuous process vents not 
included in a raw materials preparation section, as specified in 
paragraphs (b)(2)(i) of this section, or not included in a 
polymerization reaction section, as specified in paragraph (b)(2)(ii) of 
this section, by complying with Sec. 63.1315.
    (iv) Limit organic HAP emissions from all batch process vents by 
complying with Sec. 63.1321.
    (v) Comply with one of the following:
    (A) Reduce the emissions in a combustion device to achieve 98 weight 
percent reduction or to achieve a concentration of 20 parts per million 
by volume (ppmv) on a dry basis, whichever is less stringent. If an 
owner or operator elects to comply with the 20 ppmv standard, the 
concentration shall include a correction to 3 percent oxygen only when 
supplemental combustion air is used to combust the emissions;
    (B) Combust the emissions in a boiler or process heater with a 
design heat input capacity of 150 million Btu/hr or greater by 
introducing the emissions into the flame zone of the boiler or process 
heater; or
    (C) Combust the emissions in a flare that complies with the 
requirements of Sec. 63.1333(e).
    (c) Each owner or operator of an affected source producing 
polystyrene resin using a continuous process shall comply with the 
requirements specified in paragraphs (c)(1) through (c)(3) of this 
section, as appropriate, and not with any of the requirements specified 
in 40 CFR part 60, subpart DDD. Compliance can be based on either 
organic HAP or TOC.
    (1) Limit organic HAP emissions from continuous process vents in the 
collection of material recovery sections within the affected source by 
complying with one of the following:
    (i) Not allow emissions to be greater than 0.0036 kg organic HAP/Mg 
of product;
    (ii) Not allow the outlet gas stream temperature from each final 
condenser in a material recovery section to exceed -25 deg.C 
(-13 deg.F); or
    (iii) Comply with one of the following:
    (A) Reduce emissions by 98 weight percent or to a concentration of 
20 parts per million by volume (ppmv) on a dry basis, whichever is less 
stringent. If an owner or operator elects to comply with the 20 ppmv 
standard, the concentration shall include a correction to 3 percent 
oxygen only when supplemental combustion air is used to combust the 
emissions;
    (B) Combust the emissions in a boiler or process heater with a 
design heat input capacity of 150 million Btu/hr or greater by 
introducing the emissions into the flame zone of the boiler or process 
heater; or
    (C) Combust the emissions in a flare that complies with the 
requirements of Sec. 63.11(b).
    (2) Limit organic HAP emissions from continuous process vents not 
included in a material recovery section, as specified in paragraph 
(c)(1)(i) of this section, by complying with Sec. 63.1315.
    (3) Limit organic HAP emissions from all batch process vents by 
complying with Sec. 63.1321.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11548, Mar. 9, 1999]

[[Page 197]]



Sec. 63.1317  PET and polystyrene continuous process affected sources--monitoring provisions.

    Continuous process vents using a control or recovery device to 
comply with Sec. 63.1316 shall comply with the applicable monitoring 
provisions specified for continuous process vents in Sec. 63.1315(a), 
except as specified in paragraphs (a) and (b) of this section.
    (a) For the purposes of paragraph (a) of this section, owners or 
operators shall ignore references to group determinations (i.e., total 
resource effectiveness) and are not required to comply with Sec. 63.113.
    (b) The monitoring period for condenser exit temperature when 
complying with Sec. 63.1316(b)(1)(i)(B) or Sec. 63.1316(c)(1)(ii) shall 
be each consecutive 3-hour continuous period (e.g., 6 am to 9 am, 9 am 
to 12 pm). Each owner or operator shall designate said monitoring period 
in the Notification of Compliance Status required by Sec. 63.1335(e)(5).



Sec. 63.1318  PET and polystyrene continuous process affected sources--testing and compliance demonstration provisions.

    (a) Except as specified in paragraphs (b) through (d) of this 
section, continuous process vents using a control or recovery device to 
comply with Sec. 63.1316 shall comply with the applicable testing and 
compliance provisions for continuous process vents specified in 
Sec. 63.1315, except that, for the purposes of this paragraph (a), 
owners or operators shall ignore references to group determination 
(i.e., total resource effectiveness) and are not required to comply with 
Sec. 63.113.
    (b) PET Affected Sources Using a Dimethyl Terephthalate Process--
Applicability Determination Procedure. Owners or operators shall 
calculate organic HAP emissions from the collection of material recovery 
sections at an existing affected source producing PET using a continuous 
dimethyl terephthalate process to determine whether 
Sec. 63.1316(a)(1)(i) is applicable using the procedures specified in 
either paragraph (b)(1) or (b)(2) of this section.
    (1) Use Equation 1 of this subpart to determine mass emissions per 
mass product as specified in paragraphs (b)(1)(i) and (b)(1)(ii) of this 
section.
[GRAPHIC] [TIFF OMITTED] TR12SE96.000


where:

ER=Emission rate of total organic HAP or TOC, kg/Mg product.
Ei=Emission rate of total organic HAP or TOC in continuous 
process vent i, kg/hr.
Pp=The rate of polymer produced, kg/hr.
n=Number of continuous process vents in the collection of material 
recovery sections at the affected source.
0.001=Conversion factor, kg to Mg.

    (i) The mass emission rate for each continuous process vent, 
Ei, shall be determined according to the procedures specified 
in Sec. 63.116(c)(4). The sampling site for determining whether 
Sec. 63.1316(a)(1)(i) is applicable shall be before any add-on control 
devices (i.e., those required by regulation) and after those recovery 
devices installed as part of operating the material recovery section. 
When the provisions of Sec. 63.116(c)(4) specify that Method 18, 40 CFR 
part 60, appendix A shall be used, Method 18 or Method 25A, 40 CFR part 
60, appendix A may be used for the purposes of this subpart. The use of 
Method 25A, 40 CFR part 60, appendix A shall comply with paragraphs 
(b)(1)(i)(A) and (b)(1)(i)(B) of this section.
    (A) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (B) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (ii) The rate of polymer produced, Pp (kg/hr), shall be 
determined by dividing the weight (kg) of polymer pulled from the 
process line during the performance test by the number of hours taken to 
perform the performance test. The

[[Page 198]]

weight of polymer pulled shall be determined by direct measurement or by 
an alternate methodology, such as materials balance. If an alternate 
methodology is used, a description of the methodology, including all 
procedures, data, and assumptions shall be submitted as part of the 
Notification of Compliance Status required by Sec. 63.1335(e)(5).
    (2) Use engineering assessment, as described in 
Sec. 63.1323(b)(6)(i), to demonstrate that mass emissions per mass 
product are less than or equal to 0.07 kg organic HAP/Mg product. If 
engineering assessment shows that mass emissions per mass product are 
greater than 0.07 kg organic HAP/Mg product and the owner or operator 
wishes to demonstrate that mass emissions per mass product are less than 
the threshold emission rate of 0.12 kg organic HAP/Mg product, the owner 
or operator shall use the procedures specified in paragraph (b)(1) of 
this section.
    (c) Compliance with Mass Emissions per Mass Product Standards. 
Owners or operators complying with Sec. 63.1316 (b)(1)(i)(A), 
(b)(1)(ii), (b)(2)(i), (b)(2)(ii), and (c)(1)(i) shall demonstrate 
compliance with the mass emissions per mass product requirements using 
the procedures specified in paragraph (b)(1) of this section, except 
that the sampling site specified in paragraph (b)(1)(i) of this section 
shall be at the outlet of the last control or recovery device.
    (d) Compliance with Temperature Limits for Final Condensers. Owners 
or operators complying with Sec. 63.1316(b)(1)(i)(B) or 
Sec. 63.1316(c)(1)(ii) shall perform an initial performance test as 
specified in paragraph (d)(1) of this section to demonstrate initial 
compliance with the temperature limit requirements and shall demonstrate 
continuous compliance as specified in paragraph (d)(2) of this section.
    (1) Using the temperature monitoring device specified by the 
applicable monitoring provisions specified for continuous process vents 
in Sec. 63.1315, an average exit temperature shall be determined based 
on the average exit temperature for three performance tests. The average 
exit temperature for each 3-hour performance test shall be based on 
measurements taken at least every 15 minutes for 3 hours of continuous 
operation under maximum representative operating conditions for the 
process. For emissions streams containing continuous and batch process 
vents, the maximum representative operating conditions shall be during 
periods when batch emission episodes are venting to the control device 
resulting in the highest concentration of organic HAP in the emissions 
stream.
    (2) As specified in Sec. 63.1317(b), continuous compliance shall be 
determined based on an average exit temperature determined for each 
consecutive 3-hour continuous period. Each 3-hour period where the 
average exit temperature is more than 6  deg.C (10  deg.F) above the 
applicable specified temperature limit shall be considered an exceedance 
of the monitoring provisions.



Sec. 63.1319  PET and polystyrene continuous process affected sources--recordkeeping provisions.

    (a) Except as specified in paragraphs (b) and (c) of this section, 
owners or operators using a control or recovery device to comply with 
Sec. 63.1316 shall comply with the applicable recordkeeping provisions 
specified in Sec. 63.1315, except that, for the purposes of this 
paragraph (a), owners or operators shall ignore references to group 
determinations (i.e., total resource effectiveness) and are not required 
to comply with Sec. 63.113.
    (b) Records Demonstrating Compliance With the Applicability 
Determination Procedure for PET Affected Sources Using a Dimethyl 
Terephthalate Process. Each owner or operator, as appropriate, shall 
keep the following data, as appropriate, up-to-date and readily 
accessible:
    (1) Results of the mass emissions per mass product calculation 
specified in Sec. 63.1318(b).
    (2) If complying with Sec. 63.1316 by demonstrating that mass 
emissions per mass product are less than or equal to the level specified 
in Sec. 63.1316(a)(1)(i), the information specified in paragraphs 
(b)(2)(i) and (b)(2)(ii) of this section.
    (i) Each process operation variable (e.g., pressure, temperature, 
type of catalyst) that may result in an increase in the mass emissions 
per mass product should said variable be changed.

[[Page 199]]

    (ii) Records of any change in process operation that increases the 
mass emissions per mass product.
    (c) Records Demonstrating Compliance with Temperature Limits for 
Final Condensers. Owners or operators of continuous process vents 
complying with Sec. 63.1316(b)(1)(i)(B) or Sec. 63.1316(c)(1)(ii) shall 
keep the following data, as appropriate, up-to-date and readily 
accessible:
    (1) Records of monitoring data as specified in Sec. 63.1315, except 
that the monitoring period shall be each consecutive 3-hour continuous 
period.
    (2) Results of the performance test specified in Sec. 63.1318(d)(1) 
and any other performance test that may be subsequently required.



Sec. 63.1320  PET and polystyrene continuous process affected sources--reporting provisions.

    (a) Except as specified in paragraphs (b) and (c) of this section, 
owners and operators using a control or recovery device to comply with 
Sec. 63.1316 shall comply with the applicable reporting provisions 
specified in Sec. 63.1315, except that, for the purposes of this 
paragraph (a), owners or operators shall ignore references to group 
determinations (i.e., total resource effectiveness) and are not required 
to comply with Sec. 63.113.
    (b) Reporting for PET Affected Sources Using a Dimethyl 
Terephthalate Process. Each owner or operator complying with 
Sec. 63.1316 by demonstrating that mass emissions per mass product are 
less than or equal to the level specified in Sec. 63.1316(a)(1)(i) shall 
comply with paragraphs (b)(1) through (b)(3) of this section.
    (1) Include the information specified in Sec. 63.1319(b)(2)(ii) in 
each Periodic Report, required by Sec. 63.1335(e)(6), as appropriate.
    (2) Include the information specified in Sec. 63.1319 (b)(1) or 
(b)(2) in the Notification of Compliance Status, required by 
Sec. 63.1335(e)(5), for the initial determination and in the appropriate 
Periodic Report, required by Sec. 63.1335(e)(6), for any subsequent 
determinations that may be required.
    (3) Whenever a process change, as defined in Sec. 63.115(e), is made 
that causes emissions from continuous process vents in the collection of 
material recovery sections (i.e., methanol recovery) within the affected 
source to be greater than 0.12 kg organic HAP/Mg of product, the owner 
or operator shall submit a report within 180 operating days after the 
process change is made or the information regarding the process change 
is known to the owner or operator. This report may be included in the 
next Periodic Report as specified in Sec. 63.1335(e)(6)(iii)(D)(2). The 
following information shall be submitted:
    (i) A description of the process change; and
    (ii) A schedule for compliance with the provisions of this subpart, 
as required under Sec. 63.1335(e)(6)(iii(D)(2).
    (c) Reporting for Affected Sources Complying With Temperature Limits 
for Final Condensers. Each owner or operator complying with 
Sec. 63.1316(b)(1)(i)(B) or Sec. 63.1316(c)(1)(ii) shall comply with 
paragraphs (c)(1) and (c)(2) of this section.
    (1) Report periods when the 3-hour average exit temperature is more 
than 6 deg. C (10 deg. F) above the applicable specified temperature 
limit in each Periodic Report, required by Sec. 63.1335(e)(6), as 
appropriate.
    (2) Include the information specified in Sec. 63.1319(c)(2) in the 
Notification of Compliance Status, required by Sec. 63.1335(e)(5), for 
the initial performance test and in the appropriate Periodic Report, 
required by Sec. 63.1335(e)(6), for any subsequent performance tests 
that may be required.
    (3) Include the information specified in Sec. 63.1317(b) in the 
Notification of Compliance Status, required by Sec. 63.1335(e)(5).



Sec. 63.1321  Batch process vents provisions.

    (a) Batch process vents. Except as specified in paragraphs (b) and 
(c) of this section, owners and operators of new and existing affected 
sources with batch process vents shall comply with the requirements in 
Secs. 63.1322 through 63.1327. The batch process vent group status shall 
be determined in accordance with Sec. 63.1323. Batch process vents 
classified as Group 1 shall comply with the reference control technology 
requirements for Group 1 batch process

[[Page 200]]

vents in Sec. 63.1322, the monitoring requirements in Sec. 63.1324, the 
performance test methods and procedures to determine compliance 
requirements in Sec. 63.1325, the recordkeeping requirements in 
Sec. 63.1326, and the reporting requirements in Sec. 63.1327. All Group 
2 batch process vents shall comply with the applicable reference control 
technology requirements in Sec. 63.1322, the recordkeeping requirements 
in Sec. 63.1326, and the reporting requirements in Sec. 63.1327.
    (b) New SAN batch affected sources. Owners and operators of new SAN 
affected sources using a batch process shall comply with the 
requirements of Sec. 63.1322 through Sec. 63.1327 for batch process 
vents and aggregate batch vent streams except as specified in paragraphs 
(b)(1) through (b)(2) of this section. For continuous process vents, 
owners and operators shall comply with the requirements of Sec. 63.1322 
through Sec. 63.1327 except as specified in paragraph (b)(3) of this 
section.
    (1) For batch process vents, the determination of group status 
(i.e., Group 1/Group 2) under Sec. 63.1323 is not required.
    (2) For batch process vents and aggregate batch vent streams, the 
control requirements for individual batch process vents or aggregate 
batch vent streams (e.g., 90 percent emission reduction) as specified in 
Sec. 63.1322(a)(1), (a)(2), (b)(1), and (b)(2) shall not apply.
    (3) Continuous process vents using a control or recovery device to 
comply with Sec. 63.1322(a)(3) are subject to the applicable 
requirements in Sec. 63.1315(a), as appropriate, except as specified in 
paragraphs (b)(3)(i) and (b)(3)(ii) of this section.
    (i) Said continuous process vents are not subject to the group 
determination procedures of Sec. 63.115 for the purposes of this 
subpart.
    (ii) Said continuous process vents are not subject to the reference 
control technology provisions of Sec. 63.113 for the purposes of this 
subpart.
    (c) Aggregate batch vent streams. Aggregate batch vent streams, as 
defined in Sec. 63.1312, are subject to the control requirements for 
individual batch process vents, as specified in Sec. 63.1322(b), as well 
as the monitoring, testing, recordkeeping, and reporting requirements 
specified in Sec. 63.1324 through Sec. 63.1327.
    (d) Owners and operators of affected sources producing ASA/AMSAN 
shall comply with the provisions of Sec. 63.1315(e).

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1322  Batch process vents--reference control technology.

    (a) Batch process vents. The owner or operator of a Group 1 batch 
process vent, as determined using the procedures in Sec. 63.1323, shall 
comply with the requirements of either paragraph (a)(1) or (a)(2) of 
this section, except as provided for in paragraph (a)(3) of this 
section. Compliance can be based on either organic HAP or TOC.
    (1) For each batch process vent, reduce organic HAP emissions using 
a flare.
    (i) The flare shall comply with the requirements of Sec. 63.11(b).
    (ii) Halogenated batch process vents, as defined in Sec. 63.1312, 
shall not be vented to a flare.
    (2) For each batch process vent, reduce organic HAP emissions for 
the batch cycle by 90 weight percent using a control device. Owners or 
operators may achieve compliance with this paragraph (a)(2) through the 
control of selected batch emission episodes or the control of portions 
of selected batch emission episodes. Documentation demonstrating how the 
90 weight percent emission reduction is achieved is required by 
Sec. 63.1325(c)(2).
    (3) The owner or operator of a new affected source producing SAN 
using a batch process shall reduce organic HAP emissions from the 
collection of batch process vents, aggregate batch vent streams, and 
continuous process vents by 84 weight percent. Compliance with this 
paragraph (a)(3) shall be demonstrated using the procedures specified in 
Sec. 63.1333(c).
    (b) Aggregate batch vent streams. The owner or operator of an 
aggregate batch vent stream that contains one or more Group 1 batch 
process vents shall comply with the requirements of either paragraph 
(b)(1) or (b)(2) of this section, except as provided for in paragraph 
(b)(3) of this section. Compliance

[[Page 201]]

can be based on either organic HAP or TOC.
    (1) For each aggregate batch vent stream, reduce organic HAP 
emissions using a flare.
    (i) The flare shall comply with the requirements of Sec. 63.11(b).
    (ii) Halogenated aggregate batch vent streams, as defined in 
Sec. 63.1312, shall not be vented to a flare.
    (2) For each aggregate batch vent stream, reduce organic HAP 
emissions by 90 weight percent or to a concentration of 20 parts per 
million by volume, whichever is less stringent, on a continuous basis 
using a control device. For purposes of complying with the 20 parts per 
million by volume outlet concentration standard, the outlet 
concentration shall be calculated on a dry basis. When a combustion 
device is used for purposes of complying with the 20 parts per million 
by volume outlet concentration standard, the concentration shall be 
corrected to 3 percent oxygen if supplemental combustion air is used to 
combust the emissions. If supplemental combustion air is not used, a 
correction to 3 percent oxygen is not required.
    (3) The owner or operator of a new affected source producing SAN 
using a batch process shall comply with paragraph (a)(3) of this 
section.
    (c) Halogenated emissions. Halogenated Group 1 batch process vents, 
halogenated aggregate batch vent streams, and halogenated continuous 
process vents that are combusted as part of complying with paragraph 
(a)(2), (a)(3), (b)(2), or (b)(3) of this section, as appropriate, shall 
be controlled according to either paragraph (c)(1) or (c)(2) of this 
section.
    (1) If a combustion device is used to comply with paragraph (a)(2), 
(a)(3), (b)(2), or (b)(3) of this section for a halogenated batch 
process vent, halogenated aggregate batch vent stream, or halogenated 
continuous process vent, said emissions shall be ducted from the 
combustion device to an additional control device that reduces overall 
emissions of hydrogen halides and halogens by 99 percent before said 
emissions are discharged to the atmosphere.
    (2) A control device may be used to reduce the halogen atom mass 
emission rate of said emissions to less than 3,750 kg/yr for batch 
process vents or aggregate batch vent streams and to less than 0.45 
kilograms per hour for continuous process vents prior to venting to any 
combustion control device, and thus make the batch process vent, 
aggregate batch vent stream, or continuous process vent nonhalogenated. 
The nonhalogenated batch process vent, aggregate batch vent stream, or 
continuous process vent must then comply with the requirements of either 
paragraph (a) or (b) of this section, as appropriate.
    (d) If a boiler or process heater is used to comply with the percent 
reduction requirement specified in paragraph (a)(2), (a)(3), (b)(2), or 
(b)(3) of this section, the batch process vent, aggregate batch vent 
stream, or continuous process vent shall be introduced into the flame 
zone of such a device.
    (e) Combination of batch process vents or aggregate batch vent 
streams with continuous process vents. A batch process vent or aggregate 
batch vent stream combined with a continuous process vent is not subject 
to the provisions of Secs. 63.1323 through 63.1327, providing the 
requirements of paragraphs (e)(1), (e)(2), and either (e)(3) or (e)(4) 
of this section are met.
    (1) The batch process vent or aggregate batch vent stream is 
combined with a continuous process vent prior to routing the continuous 
process vent to a control or recovery device. In this paragraph (e)(1), 
the definitions of control device and recovery device as they relate to 
continuous process vents shall be used.
    (2) The only emissions to the atmosphere from the batch process vent 
or aggregate batch vent stream prior to being combined with the 
continuous process vent are from equipment subject to and in compliance 
with Sec. 63.1331.
    (3) If the batch process vent or aggregate batch vent stream is 
combined with a continuous process vent prior to being routed to a 
control device, the combined vent stream shall comply with the 
requirements in Sec. 63.1315(a)(10). In this paragraph (e)(3), the 
definition of control device as it relates to continuous process vents 
shall be used.

[[Page 202]]

    (4) If the batch process vent or aggregate batch vent stream is 
combined with a continuous process vent prior to being routed to a 
recovery device, the combined vent stream shall comply with the 
requirements in Sec. 63.1315(a)(11). In this paragraph (e)(4), the 
definition of recovery device as it relates to continuous process vents 
shall be used.
    (f) Group 2 batch process vents with annual emissions greater than 
or equal to the level specified in Sec. 63.1323(d). The owner or 
operator of a Group 2 batch process vent with annual emissions greater 
than or equal to the level specified in Sec. 63.1323(d) shall comply 
with the provisions of (f)(1) and (f)(2) of this section.
    (1) Establish a batch cycle limitation that ensures the Group 2 
batch process vent does not become a Group 1 batch process vent.
    (2) Comply with the recordkeeping requirements in 
Sec. 63.1326(d)(2), and the reporting requirements in Sec. 63.1327 
(a)(3) and (b).
    (g) Group 2 batch process vents with annual emissions less than the 
level specified in Sec. 63.1323(d). The owner or operator of a Group 2 
batch process vent with annual emissions less than the level specified 
in Sec. 63.1323(d) shall comply with either paragraphs (g)(1) and (g)(2) 
of this section or with paragraphs (f)(1) and (f)(2) of this section.
    (1) Establish a batch cycle limitation that ensures emissions do not 
exceed the level specified in Sec. 63.1323(d).
    (2) Comply with the recordkeeping requirements in 
Sec. 63.1326(d)(1), and the reporting requirements in Sec. 63.1327 
(a)(2), (b), and (c).

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1323  Batch process vents--methods and procedures for group determination.

    (a) General requirements. Except as provided in paragraph (a)(3) of 
this section and in Sec. 63.1321(b)(1), the owner or operator of batch 
process vents at affected sources shall determine the group status of 
each batch process vent in accordance with the provisions of this 
section. This determination may be based on either organic HAP or TOC 
emissions.
    (1) The procedures specified in paragraphs (b) through (h) of this 
section shall be followed for the expected mix of products for a given 
batch process vent, as specified in paragraph (a)(1)(i) of this section, 
or for the worst-case HAP emitting product, as specified in paragraphs 
(a)(1)(ii) through (a)(1)(iv) of this section. ``Worst-case HAP emitting 
product'' is defined in paragraph (a)(1)(iii) of this section.
    (i) If an owner or operator chooses to follow the procedures 
specified in paragraphs (b) through (h) of this section for the expected 
mix of products, an identification of the different products and the 
number of batch cycles accomplished for each is required as part of the 
group determination documentation, as specified in Sec. 63.1326(a)(1).
    (ii) If an owner or operator chooses to follow the procedures 
specified in paragraphs (b) through (h) of this section for the worst-
case HAP emitting product, documentation identifying the worst-case HAP 
emitting product is required as part of the group determination 
documentation, as specified in Sec. 63.1326(a)(1).
    (iii) Except as specified in paragraph (a)(1)(iii)(B) of this 
section, the worst-case HAP emitting product is as defined in paragraph 
(a)(1)(iii)(A) of this section.
    (A) The worst-case HAP emitting product is the one with the highest 
mass emission rate (kg organic HAP per hour) averaged over the entire 
time period of the batch cycle.
    (B) Alternatively, when one product is produced more than 75 percent 
of the time, accounts for more than 75 percent of the annual mass of 
product, and the owner or operator can show that the mass emission rate 
(kg organic HAP per hour) averaged over the entire time period of the 
batch cycle can reasonably be expected to be similar to the mass 
emission rate for other products having emissions from the same batch 
process vent, said product may be considered the worst-case HAP emitting 
product.
    (C) An owner or operator shall determine the worst-case HAP emitting 
product for a batch process vent as specified in paragraphs 
(a)(1)(iii)(C)(1) through (a)(1)(iii)(C)(3) of this section.

[[Page 203]]

    (1) The emissions per batch emission episode shall be determined 
using any of the procedures specified in paragraph (b) of this section. 
The mass emission rate (kg organic HAP per hour) averaged over the 
entire time period of the batch cycle shall be determined by summing the 
emissions for each batch emission episode making up a complete batch 
cycle and dividing by the total duration in hours of the batch cycle.
    (2) To determine the worst-case HAP emitting product as specified 
under paragraph (a)(1)(iii)(A) of this section, the mass emission rate 
for each product shall be determined and compared.
    (3) To determine the worst-case HAP emitting product as specified 
under paragraph (a)(1)(iii)(B) of this section, the mass emission rate 
for the product meeting the time and mass criteria of paragraph 
(a)(1)(iii)(B) of this section shall be determined, and the owner or 
operator shall provide adequate information to demonstrate that the mass 
emission rate for said product is similar to the mass emission rates for 
the other products having emissions from the same batch process vent. In 
addition, the owner or operator shall provide information demonstrating 
that the selected product meets the time and mass criteria of paragraph 
(a)(1)(iii)(B) of this section.
    (iv) The annual production of the worst-case HAP emitting product 
shall be determined by ratioing the production time of said product up 
to a 12 month period of actual production. It is not necessary to ratio 
up to a maximum production rate (i.e., 8,760 hours per year at maximum 
design production).
    (2) The annual uncontrolled organic HAP or TOC emissions and annual 
average batch vent flow rate shall be determined at the exit from the 
batch unit operation. For the purposes of these determinations, the 
primary condenser operating as a reflux condenser on a reactor or 
distillation column, the primary condenser recovering monomer, reaction 
products, by-products, or solvent from a stripper operated in batch 
mode, and the primary condenser recovering monomer, reaction products, 
by-products, or solvent from a distillation operation operated in batch 
mode shall be considered part of the batch unit operation. All other 
devices that recover or oxidize organic HAP or TOC vapors shall be 
considered control devices as defined in Sec. 63.1312.
    (3) The owner or operator of a batch process vent complying with the 
flare provisions in Sec. 63.1322(a)(1) or Sec. 63.1322(b)(1) or routing 
the batch process vent to a control device to comply with the 
requirements in Sec. 63.1322(a)(2) or Sec. 63.1322(b)(2) is not required 
to perform the batch process vent group determination described in this 
section, but shall comply with all requirements applicable to Group 1 
batch process vents for said batch process vent.
    (b) Determination of annual emissions. The owner or operator shall 
calculate annual uncontrolled TOC or organic HAP emissions for each 
batch process vent using the methods described in paragraphs (b)(1) 
through (b)(8) of this section. Paragraphs (b)(1) through (b)(4) of this 
section present procedures that can be used to calculate the emissions 
from individual batch emission episodes. Emissions from batch processes 
involving multicomponent systems are to be calculated using the 
procedures in paragraphs (b)(1) through (b)(4) of this section. 
Individual HAP partial pressures in multicomponent systems shall be 
determined by the following methods: If the components are miscible in 
one another, use Raoult's law to calculate the partial pressures; if the 
solution is a dilute aqueous mixture use Henry's law constants to 
calculate partial pressures; if Raoult's law or Henry's law are not 
appropriate (or available) use experimentally obtained activity 
coefficients, Henry's law constants, or solubility data; if Raoult's law 
or Henry's law are not appropriate use models, such as the group-
contribution models, to predict activity coefficients; and if Raoult's 
law or Henry's law are not appropriate assume the components of the 
system behave independently and use the summation of all vapor pressures 
from the HAP's as the total HAP partial pressure. Chemical property data 
can be obtained from standard reference texts. Paragraph

[[Page 204]]

(b)(5) of this section describes how direct measurement can be used to 
estimate emissions. If the owner or operator can demonstrate that the 
procedures in paragraphs (b)(1) through (b)(4) of this section are not 
appropriate to estimate emissions from a batch emission episode, 
emissions may be estimated using engineering assessment, as described in 
paragraph (b)(6) of this section. Owners or operators are not required 
to demonstrate that direct measurement is not appropriate before 
utilizing engineering assessment. Paragraph (b)(6)(ii) of this section 
describes how an owner or operator shall demonstrate that the procedures 
in paragraphs (b)(1) through (b)(4) of this section are not appropriate. 
Emissions from a batch cycle shall be calculated in accordance with 
paragraph (b)(7) of this section, and annual emissions from the batch 
process vent shall be calculated in accordance with paragraph (b)(8) of 
this section.
    (1) TOC or organic HAP emissions from the purging of an empty vessel 
shall be calculated using Equation 2 of this subpart. Equation 2 of this 
subpart does not take into account evaporation of any residual liquid in 
the vessel.
[GRAPHIC] [TIFF OMITTED] TR12SE96.001


where:

Eepisode=Emissions, kg/episode.
Vves=Volume of vessel, m3.
P=TOC or total organic HAP partial pressure, kPa.
MWwavg=Weighted average molecular weight of TOC or organic 
HAP in vapor, determined in accordance with paragraph (b)(4)(iii) of 
this section, kg/kmol.
R=Ideal gas constant, 8.314 m3kPa/kmolK.
T=Temperature of vessel vapor space, K.
m=Number of volumes of purge gas used.

    (2) TOC or organic HAP emissions from the purging of a filled vessel 
shall be calculated using Equation 3 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.002


where:

Eepisode=Emissions, kg/episode.
y=Saturated mole fraction of all TOC or organic HAP in vapor phase.
Vdr=Volumetric gas displacement rate, m3/min.
P=Pressure in vessel vapor space, kPa.
MWwavg=Weighted average molecular weight of TOC or organic 
HAP in vapor, determined in accordance with paragraph (b)(4)(iii) of 
this section, kg/kmol.
R=Ideal gas constant, 8.314 m3kPa/kmolK.
T=Temperature of vessel vapor space, K.
Pi=Vapor pressure of TOC or individual organic HAP i, kPa.
xi=Mole fraction of TOC or organic HAP i in the liquid.
n=Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated.
Tm=Minutes/episode.

    (3) Emissions from vapor displacement due to transfer of material 
into

[[Page 205]]

or out of a vessel shall be calculated using Equation 4 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.003


where:

Eepisode=Emissions, kg/episode.
y=Saturated mole fraction of all TOC or organic HAP in vapor phase.
V=Volume of gas displaced from the vessel, m3.
P=Pressure in vessel vapor space, kPa.
MWwavg=Weighted average molecular weight of TOC or organic 
HAP in vapor, determined in accordance with paragraph (b)(4)(i)(D) of 
this section, kg/kmol.
R=Ideal gas constant, 8.314 m3kPa/kmolK.
T=Temperature of vessel vapor space, K.

    (4) Emissions caused by the heating of a vessel shall be calculated 
using the procedures in either paragraphs (b)(4)(i), (b)(4)(ii), or 
(b)(4)(iii) of this section, as appropriate.
    (i) If the final temperature to which the vessel contents is heated 
is lower than 50 K below the boiling point of the HAP in the vessel, 
then emissions shall be calculated using the equations in paragraphs 
(b)(4)(i)(A) through (b)(4)(i)(D) of this section.
    (A) Emissions caused by heating of a vessel shall be calculated 
using Equation 5 of this subpart. The assumptions made for this 
calculation are atmospheric pressure of 760 millimeters of mercury (mm 
Hg) and the displaced gas is always saturated with volatile organic 
compounds (VOC) vapor in equilibrium with the liquid mixture.
[GRAPHIC] [TIFF OMITTED] TR12SE96.004


where:

Eepisode=Emissions, kg/episode.
(Pi)T1, (Pi)T2=Partial pressure (kPa) of TOC or 
each organic HAP i in the vessel headspace at initial (T1) and final 
(T2) temperature.
n=Number of organic HAP in stream. Note: Summation not required if TOC 
emissions are being estimated.
trianglen=Number of kilogram-moles (kg-moles) of 
gas displaced, determined in accordance with paragraph (b)(4)(i)(B) of 
this section.
101.325=Constant, kPa.
MWwavg=Weighted average molecular weight of TOC or organic 
HAP in vapor, determined in accordance with paragraph (b)(4)(i)(D) of 
this section, kg/kmol.

    (B) The moles of gas displaced, trianglen, is 
calculated using Equation 6 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.005


where:

trianglen=Number of kg-moles of gas displaced.
Vfs=Volume of free space in the vessel, m3.
R=Ideal gas constant, 8.314 m3kPa/kmolK.

[[Page 206]]

Pa1=Initial noncondensible gas pressure in the vessel, kPa.
Pa2=Final noncondensible gas pressure, kPa.
T1=Initial temperature of vessel, K.
T2=Final temperature of vessel, K.

    (C) The initial and final pressure of the noncondensible gas in the 
vessel shall be calculated using Equation 7 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.006


where:

Pa=Initial or final partial pressure of noncondensible gas in the vessel 
headspace, kPa.
101.325=Constant, kPa.
(Pi)T=Partial pressure of TOC or each organic HAP i in the 
vessel headspace, kPa, at the initial or final temperature (T1 or T2).
n=Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated.
    (D) The weighted average molecular weight of TOC or organic HAP in 
the displaced gas, MWwavg, shall be calculated using Equation 
8 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.007


where:

C=TOC or organic HAP component
n=Number of TOC or organic HAP components in stream.

    (ii) If the vessel contents are heated to a temperature greater than 
50 K below the boiling point, then emissions from the heating of a 
vessel shall be calculated as the sum of the emissions calculated in 
accordance with paragraphs (b)(4)(ii)(A) and (b)(4)(ii)(B) of this 
section.
    (A) For the interval from the initial temperature to the temperature 
50 K below the boiling point, emissions shall be calculated using 
Equation 5 of this subpart, where T2 is the temperature 50 K 
below the boiling point.
    (B) For the interval from the temperature 50 K below the boiling 
point to the final temperature, emissions shall be calculated as the 
summation of emissions for each 5 K increment, where the emissions for 
each increment shall be calculated using Equation 5 of this subpart.
    (1) If the final temperature of the heatup is lower than 5 K below 
the boiling point, the final temperature for the last increment shall be 
the final temperature for the heatup, even if the last increment is less 
than 5 K.
    (2) If the final temperature of the heatup is higher than 5 K below 
the boiling point, the final temperature for the last increment shall be 
the temperature 5 K below the boiling point, even if the last increment 
is less than 5 K.
    (3) If the vessel contents are heated to the boiling point and the 
vessel is not operating with a condenser, the final temperature for the 
final increment shall be the temperature 5 K below the boiling point, 
even if the last increment is less than 5 K.
    (iii) If the vessel is operating with a condenser, and the vessel 
contents are heated to the boiling point, the primary condenser, as 
specified in paragraph (a)(2) of this section, is considered part of the 
process. Emissions shall be calculated as the sum of emissions 
calculated using Equation 5 of this subpart, which calculates emissions 
due to heating the vessel contents to the temperature of the gas 
existing the condenser, and emissions calculated using Equation 4 of 
this subpart, which calculates emissions due to the displacement of the 
remaining saturated noncondensible gas in the

[[Page 207]]

vessel. The final temperature in Equation 5 of this subpart shall be set 
equal to the exit gas temperature of the condenser. Equation 4 of this 
subpart shall be used as written below in Equation 4a of this subpart, 
using free space volume, and T is set equal to the condenser exit gas 
temperature.
[GRAPHIC] [TIFF OMITTED] TR12SE96.008


where:

Eepisode=Emissions, kg/episode.
y=Saturated mole fraction of all TOC or organic HAP in vapor phase.
Vfs=Volume of the free space in the vessel, m3.
P=Pressure in vessel vapor space, kPa.
MWwavg=Weighted average molecular weight of TOC or organic 
HAP in vapor, determined in accordance with paragraph (b)(4)(i)(D) of 
this section, kg/kmol.
R=Ideal gas constant, 8.314 m3kPa/kmolK.
T=Temperature of condenser exit stream, K.

    (5) The owner or operator may estimate annual emissions for a batch 
emission episode by direct measurement. If direct measurement is used, 
the owner or operator shall either perform a test for the duration of a 
representative batch emission episode or perform a test during only 
those periods of the batch emission episode for which the emission rate 
for the entire episode can be determined or for which the emissions are 
greater than the average emission rate of the batch emission episode. 
The owner or operator choosing either of these options must develop an 
emission profile for the entire batch emission episode, based on either 
process knowledge or test data collected, to demonstrate that test 
periods are representative. Examples of information that could 
constitute process knowledge include calculations based on material 
balances and process stoichiometry. Previous test results may be used 
provided the results are still relevant to the current batch process 
vent conditions. Performance tests shall follow the procedures specified 
in paragraphs (b)(5)(i) through (b)(5)(iii) of this section. The 
procedures in either paragraph (b)(5)(iv) or (b)(5)(v) of this section 
shall be used to calculate the emissions per batch emission episode.
    (i) Method 1 or 1A, 40 CFR part 60, appendix A as appropriate, shall 
be used for selection of the sampling sites if the flow measuring device 
is a pitot tube. No traverse is necessary when Method 2A or 2D, 40 CFR 
part 60, appendix A is used to determine gas stream volumetric flow 
rate.
    (ii) Gas stream volumetric flow rate and/or average flow rate shall 
be determined as specified in paragraph (e) of this section.
    (iii) Method 18 or Method 25A, 40 CFR part 60, appendix A, shall be 
used to determine the concentration of TOC or organic HAP, as 
appropriate. Alternatively, any other method or data that has been 
validated according to the applicable procedures in Method 301 of 
appendix A of this part may be used. The use of Method 25A, 40 CFR part 
60, appendix A shall comply with paragraphs (b)(5)(iii)(A) and 
(b)(5)(iii)(B) of this section.
    (A) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (B) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (iv) If an integrated sample is taken over the entire batch emission 
episode to determine TOC or average total organic HAP concentration, 
emissions shall be calculated using Equation 9 of this subpart.

[[Page 208]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.009


where:

Eepisode=Emissions, kg/episode.
K=Constant, 2.494  x  10-6 
(ppmv)-1 (gm-mole/scm) (kg/gm) (min/hr), where 
standard temperature is 20  deg.C.
Cj=Average concentration of TOC or sample organic HAP 
component j of the gas stream, dry basis, ppmv.
Mj=Molecular weight of TOC or sample organic HAP component j 
of the gas stream, gm/gm-mole.
AFR=Average flow rate of gas stream, dry basis, scmm.
Th=Hours/episode.
n=Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated 
using a TOC concentration measured using Method 25A, 40 CFR part 60, 
appendix A.
    (v) If grab samples are taken to determine TOC or average total 
organic HAP concentration, emissions shall be calculated according to 
paragraphs (b)(5)(v)(A) and (b)(5)(v)(B) of this section.
    (A) For each measurement point, the emission rate shall be 
calculated using Equation 10 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.010


where:

Epoint=Emission rate for individual measurement point, kg/hr.
K=Constant, 2.494  x  10-6 (ppmv)-1 (gm-mole/scm) (kg/gm) 
(min/hr), where standard temperature is 20  deg.C.
Cj=Concentration of TOC or sample organic HAP component j of 
the gas stream, dry basis, ppmv.
Mj=Molecular weight of TOC or sample organic HAP component j 
of the gas stream, gm/gm-mole.
FR=Flow rate of gas stream for the measurement point, dry basis, scmm.
n=Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated 
using a TOC concentration measured using Method 25A, 40 CFR part 60, 
appendix A.
    (B) The emissions per batch emission episode shall be calculated 
using Equation 11 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.011


where:

Eepisode=Emissions, kg/episode.
DUR=Duration of the batch emission episode, hr/episode.
Ei=Emissions for measurement point i, kg/hr.
n=Number of measurements.

    (6) If the owner or operator can demonstrate that the methods in 
paragraphs (b)(1) through (b)(4) of this section are not appropriate to 
estimate emissions for a batch emissions episode, the owner or operator 
may use engineering assessment to estimate emissions as specified in 
paragraphs (b)(6)(i) and (b)(6)(ii) of this section. All data, 
assumptions, and procedures used in an engineering assessment shall be 
documented.
    (i) Engineering assessment includes, but is not limited to, the 
following:
    (A) Previous test results, provided the tests are representative of 
current operating practices;
    (B) Bench-scale or pilot-scale test data representative of the 
process under representative operating conditions;
    (C) Flow rate, TOC emission rate, or organic HAP emission rate 
specified or implied within a permit limit applicable to the batch 
process vent; and
    (D) Design analysis based on accepted chemical engineering 
principles, measurable process parameters, or physical or chemical laws 
or properties. Examples of analytical methods include, but are not 
limited to:
    (1) Use of material balances;
    (2) Estimation of flow rate based on physical equipment design such 
as pump or blower capacities; and

[[Page 209]]

    (3) Estimation of TOC or organic HAP concentrations based on 
saturation conditions.
    (ii) The emissions estimation equations in paragraphs (b)(1) through 
(b)(4) of this section shall be considered inappropriate for estimating 
emissions for a given batch emissions episode if one or more of the 
criteria in paragraphs (b)(6)(ii)(A) through (b)(6)(ii)(B) of this 
section are met.
    (A) Previous test data are available that show a greater than 20 
percent discrepancy between the test value and the estimated value.
    (B) The owner or operator can demonstrate to the Administrator that 
the emissions estimation equations are not appropriate for a given batch 
emissions episode.
    (C) Data or other information supporting a finding that the 
emissions estimation equations are inappropriate as specified under 
paragraph (b)(6)(ii)(A) of this section shall be reported in the 
Notification of Compliance Status, as required in Sec. 63.1335(e)(5).
    (D) Data or other information supporting a finding that the 
emissions estimation equations are inappropriate as specified under 
paragraph (b)(6)(ii)(B) of this section shall be reported in the 
Precompliance Report, as required in Sec. 63.1335(e)(3).
    (7) For each batch process vent, the TOC or organic HAP emissions 
associated with a single batch cycle shall be calculated using Equation 
12 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.012

where:

Ecycle=Emissions for an individual batch cycle, kg/batch 
cycle
Eepisode i=Emissions from batch emission episode i, kg/
episode
n=Number of batch emission episodes for the batch cycle

    (8) Annual TOC or organic HAP emissions from a batch process vent 
shall be calculated using Equation 13 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.013


where:

AE=Annual emissions from a batch process vent, kg/yr.
Ni=Number of type i batch cycles performed annually, cycles/
year
Ecycle i=Emissions from the batch process vent associated 
with a single type i batch cycle, as determined in paragraph (b)(7) of 
this section, kg/batch cycle
n=Number of different types of batch cycles that cause the emission of 
TOC or organic HAP from the batch process vent

    (c) [Reserved]
    (d) Minimum emission level exemption. A batch process vent with 
annual emissions less than 11,800 kg/yr is considered a Group 2 batch 
process vent and the owner or operator of said batch process vent shall 
comply with the requirements in Sec. 63.1322 (f) or (g). The owner or 
operator of said batch process vent is not required to comply with the 
provisions in paragraphs (e) through (g) of this section.
    (e) Determination of average flow rate. The owner or operator shall 
determine the average flow rate for each batch emission episode in 
accordance with one of the procedures provided in paragraphs (e)(1) 
through (e)(2) of this section. The annual average flow rate for a batch 
process vent shall be calculated as specified in paragraph (e)(3) of 
this section.
    (1) Determination of the average flow rate for a batch emission 
episode by direct measurement shall be made using the procedures 
specified in paragraphs (e)(1)(i) through (e)(1)(iii) of this section.
    (i) The volumetric flow rate for a batch emission episode, in 
standard cubic meters per minute (scmm) at 20 deg. C, shall be 
determined using Method 2, 2A, 2C, or 2D, 40 CFR part 60, appendix A, as 
appropriate.
    (ii) The volumetric flow rate of a representative batch emission 
episode shall be measured every 15 minutes.
    (iii) The average flow rate for a batch emission episode shall be 
calculated using Equation 14 of this subpart.

[[Page 210]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.014


where:

AFRepisode = Average flow rate for the batch emission 
episode, scmm.
FRi = Flow rate for individual measurement i, scmm.
n = Number of flow rate measurements taken during the batch emission 
episode.

    (2) The average flow rate for a batch emission episode may be 
determined by engineering assessment, as defined in paragraph (b)(6)(i) 
of this section. All data, assumptions, and procedures used shall be 
documented.
    (3) The annual average flow rate for a batch process vent shall be 
calculated using Equation 15 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.015


where:

AFR = Annual average flow rate for the batch process vent, scmm.
DURi = Duration of type i batch emission episodes annually, 
hrs/yr.
AFRepisode,i = Average flow rate for type i batch emission 
episode, scmm.
n = Number of types of batch emission episodes venting from the batch 
process vent.

    (f) Determination of cutoff flow rate. For each batch process vent, 
the owner or operator shall calculate the cutoff flow rate using 
Equation 16 of this subpart.

CFR = (0.00437) (AE)-51.6 [Eq. 16]

where:

CFR = Cutoff flow rate, scmm.
AE = Annual TOC or organic HAP emissions, as determined in paragraph 
(b)(8) of this section, kg/yr.

    (g) Group 1/Group 2 status determination. The owner or operator 
shall compare the cutoff flow rate, calculated in accordance with 
paragraph (f) of this section, with the annual average flow rate, 
determined in accordance with paragraph (e)(4) of this section. The 
group determination status for each batch process vent shall be made 
using the criteria specified in paragraphs (g)(1) and (g)(2) of this 
section.
    (1) If the cutoff flow rate is greater than or equal to the annual 
average flow rate of the stream, the batch process vent is classified as 
a Group 1 batch process vent.
    (2) If the cutoff flow rate is less than the annual average flow 
rate of the stream, the batch process vent is classified as a Group 2 
batch process vent.
    (h) Determination of halogenation status. To determine whether a 
batch process vent or an aggregate batch vent stream is halogenated, the 
annual mass emission rate of halogen atoms contained in organic 
compounds shall be calculated using the procedures specified in 
paragraphs (h)(1) through (h)(3) of this section.
    (1) The concentration of each organic compound containing halogen 
atoms (ppmv, by compound) for each batch emission episode shall be 
determined based on any one of the following procedures:
    (i) Process knowledge that no halogens or hydrogen halides are 
present in the process may be used to demonstrate that a batch emission 
episode is nonhalogenated. Halogens or hydrogen halides that are 
unintentionally introduced into the process shall not be considered in 
making a finding that a batch emission episode is nonhalogenated.
    (ii) Engineering assessment as discussed in paragraph (b)(6)(i) of 
this section.
    (iii) Concentration of organic compounds containing halogens and 
hydrogen halides as measured by Method 26 or 26A, 40 CFR part 60, 
appendix A.
    (iv) Any other method or data that has been validated according to 
the applicable procedures in Method 301 of appendix A of this part.
    (2) The annual mass emissions of halogen atoms for a batch process 
vent shall be calculated using Equation 17 of this subpart.

[[Page 211]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.016


where:

Ehalogen = Mass of halogen atoms, dry basis, kg/yr.
K = Constant, 0.022 (ppmv)-1 (kg-mole per scm) (minute/yr), 
where standard temperature is 20 deg.C.
AFR = Annual average flow rate of the batch process vent, determined 
according to paragraph (e) of this section, scmm.
Mj,i = Molecular weight of halogen atom i in compound j, kg/
kg-mole.
Lj,i = Number of atoms of halogen i in compound j.
n = Number of halogenated compounds j in the batch process vent.
m = Number of different halogens i in each compound j of the batch 
process vent.
Cavgj = Average annual concentration of halogenated compound 
j in the batch process vent as determined by using Equation 18 of this 
subpart, dry basis, ppmv.
[GRAPHIC] [TIFF OMITTED] TR12SE96.017


where:

DURi = Duration of type i batch emission episodes annually, 
hrs/yr.
Ci = Average concentration of halogenated compound j in type 
i batch emission episode, ppmv.
n = Number of types of batch emission episodes venting from the batch 
process vent.

    (3) The annual mass emissions of halogen atoms for an aggregate 
batch vent stream shall be the sum of the annual mass emissions of 
halogen atoms for all batch process vents included in the aggregate 
batch vent stream.
    (i) Process changes affecting Group 2 batch process vents. Whenever 
process changes, as described in paragraph (i)(1) of this section, are 
made that affect one or more Group 2 batch process vents, the owner or 
operator shall comply with paragraphs (i) (2) and (3) of this section.
    (1) Examples of process changes include, but are not limited to, 
changes in production capacity, production rate, feedstock type, or 
catalyst type; or whenever there is replacement, removal, or 
modification of recovery equipment considered part of the batch unit 
operation as specified in paragraph (a)(2) of this section. An increase 
in the annual number of batch cycles beyond the batch cycle limitation 
constitutes a process change. For purposes of this paragraph (i), 
process changes do not include: process upsets; unintentional, temporary 
process changes; and changes that are within the margin of variation on 
which the original group determination was based.
    (2) For each batch process vent affected by a process change, the 
owner or operator shall redetermine the group status by repeating the 
procedures specified in paragraphs (b) through (g) of this section, as 
applicable; alternatively, engineering assessment, as described in 
paragraph (b)(6)(i) of this section, can be used to determine the 
effects of the process change.
    (3) Based on the results from paragraph (i)(2) of this section, 
owners or operators shall comply with either paragraph (i)(3) (i), (ii), 
or (iii) of this section.
    (i) If the redetermination described in paragraph (i)(2) of this 
section indicates that a Group 2 batch process vent has become a Group 1 
batch process vent as a result of the process change, the owner or 
operator shall submit a report as specified in Sec. 63.1327(b) and shall 
comply with the Group 1 provisions in Sec. 63.1322 through Sec. 63.1327 
in accordance with the compliance schedule described in 
Sec. 63.1335(e)(6)(iii)(D)(2).
    (ii) If the redetermination described in paragraph (i)(2) of this 
section indicates that a Group 2 batch process vent with annual 
emissions less than the

[[Page 212]]

level specified in paragraph (d) of this section, that is in compliance 
with Sec. 63.1322(g), now has annual emissions greater than or equal to 
the level specified in paragraph (d) of this section but remains a Group 
2 batch process vent, the owner or operator shall submit a report as 
specified in Sec. 63.1327(c) and shall comply with Sec. 63.1322(f) in 
accordance with the compliance schedule required by 
Sec. 63.1335(e)(6)(iii)(D)(2).
    (iii) If the redetermination described in paragraph (i)(2) of this 
section indicates no change in group status or no change in the relation 
of annual emissions to the levels specified in paragraph (d) of this 
section, the owner or operator is not required to submit a report, as 
described in Sec. 63.1327(e).
    (j) Process changes to new SAN affected sources using a batch 
process. Whenever process changes, as described in paragraph (j)(1) of 
this section, are made to a new affected source producing SAN using a 
batch process, the owner or operator shall comply with paragraphs (j) 
(2) and (3) of this section.
    (1) Examples of process changes include, but are not limited to, 
changes in production capacity, production rate, feedstock type, or 
catalyst type; replacement, removal, or addition of recovery equipment 
considered part of a batch unit operation, as specified in paragraph 
(a)(1) of this section; replacement, removal, or addition of control 
equipment associated with a continuous or batch process vent or an 
aggregate batch vent stream. For purposes of this paragraph (j)(1), 
process changes do not include process upsets or unintentional, 
temporary process changes.
    (2) The owner or operator shall redetermine the percent emission 
reduction achieved using the procedures specified in Sec. 63.1333(c). If 
engineering assessment, as described in paragraph (b)(6)(i) of this 
section, can demonstrate that the process change did not cause the 
percent emission reduction to decrease, it may be used in lieu of 
redetermining the percent reduction using the procedures specified in 
Sec. 63.1333(c).
    (3) Where the redetermined percent reduction is less than 84 
percent, the owner or operator shall submit a report as specified in 
Sec. 63.1327(d) and shall comply with Sec. 63.1322(a)(3) and all 
associated provisions in accordance with the compliance schedule 
described in Sec. 63.1335(e)(6)(iii)(D)(2).

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1324  Batch process vents--monitoring provisions.

    (a) General requirements. Each owner or operator of a batch process 
vent or aggregate batch vent stream that uses a control device to comply 
with the requirements in Sec. 63.1322(a) or Sec. 63.1322(b), shall 
install the monitoring equipment specified in paragraph (c) of this 
section.
    (1) This monitoring equipment shall be in operation at all times 
when batch emission episodes, or portions thereof, that the owner or 
operator has selected to control are vented to the control device, or at 
all times when an aggregate batch vent stream is vented to the control 
device.
    (2) The owner or operator shall operate control devices such that 
monitored parameters remain above the minimum level or below the maximum 
level, as appropriate, established as specified in paragraph (f) of this 
section.
    (b) Continuous process vents. Each owner or operator of a continuous 
process vent that uses a control device or recovery device to comply 
with the requirements in Sec. 63.1322(a)(3) shall comply with the 
applicable requirements of Sec. 63.1315(a) as specified in 
Sec. 63.1321(b).
    (c) Batch process vent and aggregate batch vent stream monitoring 
parameters. The monitoring equipment specified in paragraphs (c)(1) 
through (c)(8) of this section shall be installed as specified in 
paragraph (a) of this section. The parameters to be monitored are 
specified in Table 7 of this subpart.
    (1) Where an incinerator is used, a temperature monitoring device 
equipped with a continuous recorder is required.
    (i) Where an incinerator other than a catalytic incinerator is used, 
the temperature monitoring device shall be installed in the firebox or 
in the ductwork immediately downstream of the firebox in a position 
before any substantial heat exchange occurs.

[[Page 213]]

    (ii) Where a catalytic incinerator is used, temperature monitoring 
devices shall be installed in the gas stream immediately before and 
after the catalyst bed.
    (2) Where a flare is used, a device (including but not limited to a 
thermocouple, ultra-violet beam sensor, or infrared sensor) capable of 
continuously detecting the presence of a pilot flame is required.
    (3) Where a boiler or process heater of less than 44 megawatts 
design heat input capacity is used, a temperature monitoring device in 
the firebox equipped with a continuous recorder is required. Any boiler 
or process heater in which all batch process vents or aggregate batch 
vent streams are introduced with the primary fuel or are used as the 
primary fuel is exempt from this requirement.
    (4) Where a scrubber is used with an incinerator, boiler, or process 
heater in concert with the combustion of halogenated batch process vents 
or halogenated aggregate batch vent streams, the following monitoring 
equipment is required for the scrubber.
    (i) A pH monitoring device equipped with a continuous recorder to 
monitor the pH of the scrubber effluent.
    (ii) A flow meter equipped with a continuous recorder shall be 
located at the scrubber influent to monitor the scrubber liquid flow 
rate.
    (5) Where an absorber is used, a scrubbing liquid temperature 
monitoring device and a specific gravity monitoring device are required, 
each equipped with a continuous recorder.
    (6) Where a condenser is used, a condenser exit temperature (product 
side) monitoring device equipped with a continuous recorder is required.
    (7) Where a carbon adsorber is used, an integrating regeneration 
stream flow monitoring device having an accuracy of 10 
percent, capable of recording the total regeneration stream mass flow 
for each regeneration cycle; and a carbon bed temperature monitoring 
device, capable of recording the carbon bed temperature after each 
regeneration and within 15 minutes of completing any cooling cycle are 
required.
    (8) As an alternate to paragraphs (c)(5) through (c)(7) of this 
section, the owner or operator may install an organic monitoring device 
equipped with a continuous recorder.
    (d) Alternative monitoring parameters. An owner or operator of a 
batch process vent or aggregate batch vent stream may request approval 
to monitor parameters other than those required by paragraph (c) of this 
section. The request shall be submitted according to the procedures 
specified in Sec. 63.1335(f). Approval shall be requested if the owner 
or operator:
    (1) Uses a control device other than those included in paragraph (c) 
of this section; or
    (2) Uses one of the control devices included in paragraph (c) of 
this section, but seeks to monitor a parameter other than those 
specified in Table 7 of this subpart and paragraph (c) of this section.
    (e) Monitoring of bypass lines. Owners or operators of a batch 
process vent or aggregate batch vent stream using a vent system that 
contains bypass lines that could divert emissions away from a control 
device used to comply with Sec. 63.1322(a) or Sec. 63.1322(b) shall 
comply with either paragraph (d)(1), (d)(2), or (d)(3) of this section. 
Equipment such as low leg drains, high point bleeds, analyzer vents, 
open-ended valves or lines, and pressure relief valves needed for safety 
purposes are not subject to this paragraph (e).
    (1) Properly install, maintain, and operate a flow indicator that 
takes a reading at least once every 15 minutes. Records shall be 
generated as specified in Sec. 63.1326(e)(3). The flow indicator shall 
be installed at the entrance to any bypass line that could divert 
emissions away from the control device and to the atmosphere; or
    (2) Secure the bypass line valve in the non-diverting position with 
a car-seal or a lock-and-key type configuration. A visual inspection of 
the seal or closure mechanism shall be performed at least once every 
month to ensure that the valve is maintained in the non-diverting 
position and emissions are not diverted through the bypass line. Records 
shall be generated as specified in Sec. 63.1326(e)(4).
    (3) Continuously monitor the bypass line valve position using 
computer monitoring and record any periods when the position of the 
bypass line

[[Page 214]]

valve has changed as specified in Sec. 63.1326(e)(4).
    (f) Establishment of parameter monitoring levels. Parameter 
monitoring levels for batch process vents and aggregate batch vent 
streams shall be established as specified in paragraphs (f)(1) through 
(f)(3) of this section. For continuous process vents complying with 
Sec. 63.1322(a)(3), parameter monitoring levels shall be established as 
specified in Sec. 63.1315(a), except as specified in paragraph (f)(4) of 
this section.
    (1) For each parameter monitored under paragraph (c) of this 
section, the owner or operator shall establish a level, defined as 
either a maximum or minimum operating parameter as denoted in Table 8 of 
this subpart, that indicates proper operation of the control device. The 
level shall be established in accordance with the procedures specified 
in Sec. 63.1334.
    (i) For batch process vents using a control device to comply with 
Sec. 63.1322(a)(2), the established level shall reflect the control 
efficiency established as part of the initial compliance demonstration 
specified in Sec. 63.1325(c)(2).
    (ii) For aggregate batch vent streams using a control device to 
comply with Sec. 63.1322(b)(2), the established level shall reflect the 
control efficiency requirement specified in Sec. 63.1322(b)(2).
    (iii) For batch process vents and aggregate batch vent streams using 
a control device to comply with Sec. 63.1322(a)(3), the established 
level shall reflect the control efficiency established as part of the 
initial compliance demonstration specified in Sec. 63.1325(f)(4).
    (2) The established level, along with supporting documentation, 
shall be submitted in the Notification of Compliance Status or the 
operating permit application as required in Sec. 63.1335(e)(5) or 
Sec. 63.1335(e)(8), respectively.
    (3) The operating day shall be defined as part of establishing the 
parameter monitoring level and shall be submitted with the information 
in paragraph (f)(2) of this section. The definition of operating day 
shall specify the times at which an operating day begins and ends. The 
operating day shall not exceed 24 hours.
    (4) For continuous process vents using a control or recovery device 
to comply with Sec. 63.1322(a)(3), the established level shall reflect 
the control efficiency established as part of the initial compliance 
demonstration specified in Sec. 63.1325(f)(4).



Sec. 63.1325  Batch process vents--performance test methods and procedures to determine compliance.

    (a) Use of a flare. When a flare is used to comply with 
Secs. 63.1322 (a)(1), (a)(3), (b)(1), or (b)(3), the owner or operator 
shall comply with the flare provisions in Sec. 63.11(b).
    (b) Exceptions to performance tests. An owner or operator is not 
required to conduct a performance test when a control device specified 
in paragraphs (b)(1) through (b)(5) of this section is used to comply 
with Sec. 63.1322 (a)(2) or (a)(3). Further, if a performance test 
meeting the conditions specified in paragraph (b)(6) of this section has 
been conducted by the owner or operator, the results of said performance 
test may be submitted and a performance test, as required by this 
section, is not required.
    (1) A boiler or process heater with a design heat input capacity of 
44 megawatts or greater.
    (2) A boiler or process heater where the vent stream is introduced 
with the primary fuel or is used as the primary fuel.
    (3) A control device for which a performance test was conducted for 
determining compliance with a New Source Performance Standard (NSPS) and 
the test was conducted using the same procedures specified in this 
section and no process changes have been made since the test. Recovery 
devices used for controlling emissions from continuous process vents 
complying with Sec. 63.1322(a)(3) are also eligible for the exemption 
described in this paragraph (b)(3).
    (4) A boiler or process heater burning hazardous waste for which the 
owner or operator:
    (i) Has been issued a final permit under 40 CFR part 270 and 
complies with the requirements of 40 CFR part 266, subpart H; or

[[Page 215]]

    (ii) Has certified compliance with the interim status requirements 
of 40 CFR part 266, subpart H.
    (5) An incinerator burning hazardous waste for which the owner or 
operator complies with the requirements of 40 CFR part 264, subpart O.
    (6) Performance tests done for other subparts in 40 CFR part 60 or 
part 63 where total organic HAP or TOC was measured, provided the owner 
or operator can demonstrate that operating conditions for the process 
and control device during the performance test are representative of 
current operating conditions.
    (c) Batch process vent testing and procedures for compliance with 
Sec. 63.1322(a)(2). Except as provided in paragraph (b) of this section, 
an owner or operator using a control device to comply with 
Sec. 63.1322(a)(2) shall conduct a performance test using the procedures 
specified in paragraph (c)(1) of this section in order to determine the 
control efficiency of the control device. An owner or operator shall 
determine the percent reduction for the batch cycle using the control 
efficiency of the control device as specified in paragraphs (c)(2)(i) 
through (c)(2)(iii) of this section and the procedures specified in 
paragraph (c)(2) of this section. Compliance may be based on either 
total organic HAP or TOC. For purposes of this paragraph (c) and all 
paragraphs that are part of this paragraph (c), the term ``batch 
emission episode'' shall have the meaning ``period of the batch emission 
episode selected for control,'' which may be the entire batch emission 
episode or may only be a portion of the batch emission episode.
    (1) Performance tests shall be conducted as specified in paragraphs 
(c)(1)(i) through (c)(1)(v) of this section.
    (i) Except as specified in paragraph (c)(1)(i)(A) of this section, a 
test shall be performed for the entire period of each batch emission 
episode in the batch cycle that the owner or operator selects to control 
as part of achieving the required 90 percent emission reduction for the 
batch cycle specified in Sec. 63.1322(a)(2). Only one test is required 
for each batch emission episode selected by the owner or operator for 
control. The owner or operator shall follow the procedures listed in 
paragraphs (c)(1)(i)(B) through (c)(1)(i)(D) of this section.
    (A) Alternatively, an owner or operator may choose to test only 
those periods of the batch emission episode during which the emission 
rate for the entire episode can be determined or during which the 
emissions are greater than the average emission rate of the batch 
emission episode. The owner or operator choosing either of these options 
must develop an emission profile for the entire batch emission episode, 
based on either process knowledge or test data collected, to demonstrate 
that test periods are representative. Examples of information that could 
constitute process knowledge include calculations based on material 
balances and process stoichiometry. Previous test results may be used 
provided the results are still relevant to the current batch process 
vent conditions.
    (B) Method 1 or 1A, 40 CFR part 60, appendix A, as appropriate, 
shall be used for selection of the sampling sites if the flow measuring 
device is a pitot tube. No traverse is necessary when Method 2A or 2D, 
40 CFR part 60, appendix A is used to determine gas stream volumetric 
flow rate. Inlet sampling sites shall be located as specified in 
paragraphs (c)(1)(i)(B)(1) and (c)(1)(i)(B)(2) of this section. Outlet 
sampling sites shall be located at the outlet of the control device 
prior to release to the atmosphere.
    (1) The control device inlet sampling site shall be located at the 
exit from the batch unit operation before any control device. 
Sec. 63.1323(a)(2) describes those recovery devices considered part of 
the unit operation. Inlet sampling sites would be after these specified 
recovery devices.
    (2) If a batch process vent is introduced with the combustion air or 
as a secondary fuel into a boiler or process heater with a design 
capacity less than 44 megawatts, selection of the location of the inlet 
sampling sites shall ensure the measurement of total organic HAP or TOC 
(minus methane and ethane) concentrations in all batch process vents and 
primary and secondary fuels introduced into the boiler or process 
heater.

[[Page 216]]

    (C) Gas stream volumetric flow rate and/or average flow rate shall 
be determined as specified in Sec. 63.1323(e).
    (D) Method 18 or Method 25A, 40 CFR part 60, appendix A shall be 
used to determine the concentration of organic HAP or TOC, as 
appropriate. Alternatively, any other method or data that has been 
validated according to the applicable procedures in Method 301 of 
appendix A of this part may be used. The use of Method 25A, 40 CFR part 
60, appendix A shall comply with paragraphs (c)(1)(i)(D)(1) and 
(c)(1)(i)(D)(2) of this section.
    (1) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (2) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (ii) If an integrated sample is taken over the entire test period to 
determine TOC or average total organic HAP concentration, emissions per 
batch emission episode shall be calculated using Equations 19 and 20 of 
this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.018

      
    [GRAPHIC] [TIFF OMITTED] TR12SE96.019
    

where:

Eepisode = Inlet or outlet emissions, kg/episode.
K = Constant, 2.494 x 10-6 (ppmv)-1 (gm-mole/scm) 
(kg/gm) (min/hr), where standard temperature is 20 deg.C.
Cj = Average inlet or outlet concentration of TOC or sample 
component j of the gas stream for the batch emission episode, dry basis, 
ppmv.
Mj = Molecular weight of TOC or sample component j of the gas 
stream, gm/gm-mole.
AFR = Average inlet or outlet flow rate of gas stream for the batch 
emission episode, dry basis, scmm.
Th = Hours/episode
n = Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated 
using a TOC concentration measured using Method 25A, 40 CFR part 60, 
appendix A.
    (iii) If grab samples are taken to determine TOC or total organic 
HAP concentration, emissions shall be calculated according to paragraphs 
(c)(1)(iii) (A) and (B) of this section.
    (A) For each measurement point, the emission rates shall be 
calculated using Equations 21 and 22 of this subpart.

[[Page 217]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.020

      
    [GRAPHIC] [TIFF OMITTED] TR12SE96.021
    

where:

Epoint = Inlet or outlet emission rate for the measurement 
point, kg/hr.
K = Constant, 2.494 x 10-6 (ppmv)-1 (gm-mole/scm) 
(kg/gm) (min/hr), where standard temperature is 20 deg.C.
Cj = Inlet or outlet concentration of TOC or sample organic 
HAP component j of the gas stream, dry basis, ppmv.
Mj = Molecular weight of TOC or sample organic HAP component 
j of the gas stream, gm/gm-mole.
FR = Inlet or outlet flow rate of gas stream for the measurement point, 
dry basis, scmm.
n = Number of organic HAP in stream.
    Note: Summation not required if TOC emissions are being estimated 
using a TOC concentration measured using Method 25A, 40 CFR part 60, 
appendix A.
    (B) The emissions per batch emission episode shall be calculated 
using Equations 23 and 24 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.022

      
    [GRAPHIC] [TIFF OMITTED] TR12SE96.023
    

where:

Eepisode = Inlet or outlet emissions, kg/episode.
DUR = Duration of the batch emission episode, hr/episode.
Epoint,i = Inlet or outlet emissions for measurement point i, 
kg/hr.
n = Number of measurements.

    (iv) The control efficiency for the control device shall be 
calculated using Equation 25 of this subpart.

[[Page 218]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.024


where:

R = Control efficiency of control device, percent.
Einlet = Mass rate of TOC or total organic HAP for batch 
emission episode i at the inlet to the control device as calculated 
under paragraph (c)(1)(ii) or (c)(1)(iii) of this section, kg/hr.
Eoutlet = Mass rate of TOC or total organic HAP for batch 
emission episode i at the outlet of the control device, as calculated 
under paragraph (c)(1)(ii) or (c)(1)(iii) of this section, kg/hr.
n = Number of batch emission episodes in the batch cycle selected to be 
controlled.

    (v) If the batch process vent entering a boiler or process heater 
with a design capacity less than 44 megawatts is introduced with the 
combustion air or as a secondary fuel, the weight-percent reduction of 
total organic HAP or TOC across the device shall be determined by 
comparing the TOC or total organic HAP in all combusted batch process 
vents and primary and secondary fuels with the TOC or total organic HAP 
exiting the combustion device, respectively.
    (2) The percent reduction for the batch cycle shall be determined 
using Equation 26 of this subpart and the control device efficiencies 
specified in paragraphs (c)(2)(i) through (c)(2)(iii) of this section. 
All information used to calculate the batch cycle percent reduction, 
including a definition of the batch cycle identifying all batch emission 
episodes, must be recorded as specified in Sec. 63.1326(b)(2). This 
information shall include identification of those batch emission 
episodes, or portions thereof, selected for control.
[GRAPHIC] [TIFF OMITTED] TR12SE96.025


where:

PR = Percent reduction
Eunc = Mass rate of TOC or total organic HAP for uncontrolled 
batch emission episode i, kg/hr.
Einlet,con = Mass rate of TOC or total organic HAP for 
controlled batch emission episode i at the inlet to the control device, 
kg/hr.
R = Control efficiency of control device as specified in paragraphs 
(c)(2) (i) through (c) (2)(iii) of this section.
n = Number of uncontrolled batch emission episodes, controlled batch 
emission episodes, and control devices. The value of n is not 
necessarily the same for these three items.

    (i) If a performance test is required by paragraph (c) of this 
section, the control efficiency of the control device shall be as 
determined in paragraph (c)(1)(iv) of this section.
    (ii) If a performance test is not required by paragraph (c) of this 
section for a combustion control device, as specified in paragraph (b) 
of this section, the control efficiency shall be 98

[[Page 219]]

percent. The control efficiency for a flare shall be 98 percent.
    (iii) If a performance test is not required by paragraph (c) of this 
section for a noncombustion control device, the control efficiency shall 
be determined by the owner or operator based on engineering assessment.
    (d) Batch process vent and aggregate batch vent stream testing for 
compliance with Sec. 63.1322(c) [halogenated emission streams]. An owner 
or operator controlling halogenated emissions in compliance with 
Sec. 63.1322(c) shall conduct a performance test to determine compliance 
with the control efficiency specified in Sec. 63.1322(c)(1) or the 
emission limit specified in Sec. 63.1322(c)(2) for hydrogen halides and 
halogens.
    (1) Sampling sites shall be located at the inlet and outlet of the 
scrubber or other control device used to reduce halogen emissions in 
complying with Sec. 63.1322(c)(1) or at the outlet of the control device 
used to reduce halogen emissions in complying with Sec. 63.1322(c)(2).
    (2) The mass emissions of each hydrogen halide and halogen compound 
for the batch cycle or aggregate batch vent stream shall be calculated 
from the measured concentrations and the gas stream flow rate(s) 
determined by the procedures specified in paragraphs (d)(2)(i) and 
(d)(2)(ii) of this section except as specified in paragraph (d)(5) of 
this section.
    (i) Method 26 or Method 26A, 40 CFR part 60, appendix A, shall be 
used to determine the concentration, in Mg per dry scm, of total 
hydrogen halides and halogens present in the emissions stream.
    (ii) Gas stream volumetric flow rate and/or average flow rate shall 
be determined as specified in Sec. 63.1323(e).
    (3) To determine compliance with the percent reduction specified in 
Sec. 63.1322(c)(1), the mass emissions for any hydrogen halides and 
halogens present at the inlet of the scrubber or other control device 
shall be summed together. The mass emissions of any hydrogen halides or 
halogens present at the outlet of the scrubber or other control device 
shall be summed together. Percent reduction shall be determined by 
subtracting the outlet mass emissions from the inlet mass emissions and 
then dividing the result by the inlet mass emissions.
    (4) To determine compliance with the emission limit specified in 
Sec. 63.1322(c)(2), the annual mass emissions for any hydrogen halides 
and halogens present at the outlet of the control device and prior to 
any combustion device shall be summed together and compared to the 
emission limit specified in Sec. 63.1322(c)(2).
    (5) The owner or operator may use any other method to demonstrate 
compliance if the method or data has been validated according to the 
applicable procedures of Method 301 of appendix A of this part.
    (e) Aggregate batch vent stream testing for compliance with 
Sec. 63.1322(b)(2) or (b)(3). Except as specified in paragraphs (e)(1) 
through (e)(3) of this section, owners or operators of aggregate batch 
vent streams complying with Sec. 63.1322(b)(2) or (b)(3) shall conduct a 
performance test using the performance testing procedures for continuous 
process vents in Sec. 63.116(c).
    (1) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A, shall be the single organic HAP representing 
the largest percent by volume of the emissions.
    (2) The use of Method 25A, 40 CFR part 60, appendix A, is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (3) When a combustion device is used to comply with the 20 parts per 
million by volume outlet concentration standard specified in 
Sec. 63.1322(b)(2), the correction to 3 percent oxygen specified in the 
performance testing procedures of Sec. 63.116(c)(3) and 
Sec. 63.116(c)(3)(iii) is only required when supplemental combustion air 
is used to combust the emissions, for the purposes of this subpart.
    (f) Compliance with Sec. 63.1322(a)(3) [new SAN batch affected 
sources]. Except as provided in paragraph (b) of this section, an owner 
or operator using a control or recovery device to comply with the 
percent reduction requirement in

[[Page 220]]

Sec. 63.1322(a)(3) shall conduct performance tests as specified in 
either paragraph (f)(1), (f)(2), or (f)(3) of this section, as 
applicable. Compliance with Sec. 63.1322(a)(3) shall be determined as 
specified in paragraph (f)(4) of this section.
    (1) For batch process vents, performance tests shall be conducted 
using the procedures specified in paragraph (c) of this section, except 
that the owner or operator is not required to determine the percent 
reduction for the batch cycle as specified in paragraph (c)(2) of this 
section.
    (2) For continuous process vents, performance tests shall be 
conducted as required by the applicable requirements of Sec. 63.1315(a) 
as specified in Sec. 63.1321(b).
    (3) For aggregate batch vent streams, performance tests shall be 
conducted as specified in paragraph (e) of this section.
    (4) Compliance with the percent reduction requirement of 
Sec. 63.1322(a)(3) shall be demonstrated using the procedures specified 
in Sec. 63.1333(c) and the control device efficiencies specified in 
either paragraph (f)(4)(i) or (f)(4)(ii) of this section. Emissions for 
uncontrolled continuous process vents and aggregate batch vent streams 
shall be determined based on the direct measurement procedures specified 
in paragraph (f)(2) and (f)(3) of this section, respectively, or based 
on engineering assessment, as specified in Sec. 63.1323(b)(6)(i). At the 
discretion of the owner or operator, emissions for uncontrolled batch 
process vents shall be determined based on any of the procedures in 
Sec. 63.1323(b).
    (i) For noncombustion devices, the control efficiency shall be as 
determined by the performance test required by paragraph (f)(1), (f)(2), 
or (f)(3) of this section. Alternatively, if a performance test is not 
required by paragraph (c) of this section, the control efficiency shall 
be determined by the owner or operator based on engineering assessment.
    (ii) For combustion devices, the control efficiency shall be as 
determined by the performance test required by paragraph (f)(1), (f)(2), 
or (f)(3) of this section. Alternatively, if a performance test is not 
required, the control efficiency shall be 98 percent. The control 
efficiency for a flare shall be 98 percent.
    (g) Batch cycle limitation. The batch cycle limitation required by 
Sec. 63.1322 (f) and (g) shall be established as specified in paragraph 
(g)(1) of this section and shall include the elements specified in 
paragraph (g)(2) of this section.
    (1) The batch cycle limitation shall be determined by the owner or 
operator such that annual emissions for the batch process vent remain 
less than the level specified in Sec. 63.1323(d) when complying with 
Sec. 63.1322(g). Alternatively, when complying with Sec. 63.1322(f), the 
batch cycle limitation shall ensure that annual emissions remain at a 
level such that said batch process vent remains a Group 2 batch process 
vent, given the actual annual flow rate for said batch process vent 
determined according to the procedures specified in Sec. 63.1323(e). The 
batch cycle limitation shall be determined using the same basis, as 
described in Sec. 63.1323(a)(1), used to make the group determination 
(i.e., expected mix of products or worst-case HAP emitting product). The 
establishment of the batch cycle limitation is not dependent upon any 
past production or activity level.
    (i) If the expected mix of products serves as the basis for the 
batch cycle limitation, the batch cycle limitation shall be determined 
such that any foreseeable combination of products which the owner or 
operator desires the flexibility to manufacture shall be allowed. 
Combinations of products not accounted for in the documentation required 
by paragraph (g)(2)(iv) of this section shall not be allowed within the 
restrictions of the batch cycle limitation.
    (ii) If, for a batch process vent with more than one product, a 
single worst-case HAP emitting product serves as the basis for the batch 
cycle limitation, the batch cycle limitation shall be determined such 
that the maximum number of batch cycles the owner or operator desires 
the flexibility to accomplish, using the worst-case HAP emitting product 
and ensuring that the batch process vent remains a Group 2 batch process 
vent or that emissions remain less than the level specified in

[[Page 221]]

Sec. 63.1323(d), shall be allowed. This value shall be the total number 
of batch cycles allowed within the restrictions of the batch cycle 
limitation regardless of which products are manufactured.
    (2) Documentation supporting the establishment of the batch cycle 
limitation shall include the information specified in paragraphs 
(g)(2)(i) through (g)(2)(v) of this section, as appropriate.
    (i) Identification that the purpose of the batch cycle limitation is 
to comply with Sec. 63.1322 (f)(1) or (g)(1).
    (ii) Identification that the batch cycle limitation is based on a 
single worst-case HAP emitting product or on the expected mix of 
products for said batch process vent as allowed under 
Sec. 63.1323(a)(1).
    (iii) Definition of operating year for purposes of determining 
compliance with the batch cycle limitation.
    (iv) If the batch cycle limitation is based on a single worst-case 
HAP emitting product, documentation specified in Sec. 63.1323 (a)(1)(ii) 
through (a)(1)(iv), as appropriate, describing how the single product 
meets the requirements for worst-case HAP emitting product and the 
number of batch cycles allowed under the batch cycle limitation.
    (v) If the batch cycle limitation is based on the expected mix of 
products, the owner or operator shall provide documentation that 
describes as many scenarios for differing mixes of products (i.e., how 
many batch cycles for each product) that the owner or operator desires 
the flexibility to accomplish. Alternatively, the owner or operator 
shall provide a description of the relationship among the mix of 
products that will allow a determination of compliance with the batch 
cycle limitation under an infinite number of scenarios. For example, if 
a batch process vent has two products, each product has the same flow 
rate and emits for the same amount of time, and product No. 1 has twice 
the emissions as product No. 2, the relationship describing an infinite 
number of scenarios would be that the owner or operator can accomplish 
two batch cycles of product No. 2 for each batch cycle of product No. 1 
within the restriction of the batch cycle limitation.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1326  Batch process vents--recordkeeping provisions.

    (a) Group determination records for batch process vents. Except as 
provided in paragraphs (a)(7) through (a)(9) of this section, each owner 
or operator of an affected source shall maintain the records specified 
in paragraphs (a)(1) through (a)(6) of this section for each batch 
process vent subject to the group determination procedures of 
Sec. 63.1323. Except for paragraph (a)(1) of this section, the records 
required by this paragraph (a) are restricted to the information 
developed and used to make the group determination under Sec. 63.1323(b) 
through Sec. 63.1323(g), as appropriate. The information required by 
paragraph (a)(1) of this section is required for all batch process vents 
subject to the group determination procedures of Sec. 63.1323. If an 
owner or operator did not need to develop certain information (e.g., 
annual average flow rate) to determine the group status, this paragraph 
(a) does not require that additional information be developed.
    (1) An identification of each unique product that has emissions from 
one or more batch emission episodes venting from the batch process vent.
    (2) A description of, and an emission estimate for, each batch 
emission episode, and the total emissions associated with one batch 
cycle for each unique product identified in paragraph (a)(1) of this 
section that was considered in making the group determination under 
Sec. 63.1323.
    (3) Total annual uncontrolled TOC or organic HAP emissions, 
determined at the exit from the batch unit operation before any control 
device, determined in accordance with Sec. 63.1323(b).
    (i) For Group 2 batch process vents, said emissions shall be 
determined at the batch cycle limitation.
    (ii) For Group 1 batch process vents, said emissions shall be those 
used to determine the group status of the batch process vent.
    (4) The annual average flow rate for the batch process vent, 
determined in accordance with Sec. 63.1323(e).
    (5) The cutoff flow rate, determined in accordance with 
Sec. 63.1323(f).
    (6) The results of the batch process vent group determination, 
conducted in accordance with Sec. 63.1323(g).

[[Page 222]]

    (7) If a batch process vent is in compliance with Sec. 63.1322 (a) 
or (b) and the control device is operating at all times when batch 
emission episodes are venting from the batch process vent, none of the 
records in paragraphs (a)(1) through (a)(6) of this section are 
required.
    (8) If a batch process vent is in compliance with Sec. 63.1322 (a) 
or (b), but the control device is operated only during selected batch 
emission episodes, only the records in paragraphs (a)(1) through (a)(3) 
of this section are required.
    (9) If the total annual emissions from the batch process vent are 
less than the appropriate level specified in Sec. 63.1323(d), only the 
records in paragraphs (a)(1) through (a)(3) of this section are 
required.
    (b) Compliance demonstration records. Each owner or operator of a 
batch process vent or aggregate batch vent stream complying with 
Sec. 63.1322 (a) or (b), shall keep the following records, as 
applicable, up-to-date and readily accessible:
    (1) The annual mass emissions of halogen atoms in the batch process 
vent or aggregate batch vent stream determined according to the 
procedures specified in Sec. 63.1323(h);
    (2) If a batch process vent is in compliance with 
Sec. 63.1322(a)(2), records documenting the batch cycle percent 
reduction as specified in Sec. 63.1325(c)(2); and
    (3) When using a flare to comply with Sec. 63.1322 (a)(1), (a)(3), 
(b)(1), or (b)(3):
    (i) The flare design (i.e., steam-assisted, air-assisted or non-
assisted);
    (ii) All visible emission readings, heat content determinations, 
flow rate measurements, and exit velocity determinations made during the 
compliance determination required by Sec. 63.1325(a); and
    (iii) All periods during the compliance determination required by 
Sec. 63.1325(a) when the pilot flame is absent.
    (4) The following information when using a control device to meet 
the percent reduction requirement specified in Sec. 63.1322(a)(2), 
(a)(3), (b)(2), or (b)(3):
    (i) For an incinerator or non-combustion control device, the percent 
reduction of organic HAP or TOC achieved, as determined using the 
procedures specified in Sec. 63.1325(c) for batch process vents and 
Sec. 63.1325(e) for aggregate batch vent streams;
    (ii) For a boiler or process heater, a description of the location 
at which the vent stream is introduced into the boiler or process 
heater;
    (iii) For a boiler or process heater with a design heat input 
capacity of less than 44 megawatts and where the vent stream is 
introduced with combustion air or used as a secondary fuel and is not 
mixed with the primary fuel, the percent reduction of organic HAP or TOC 
achieved, as determined using the procedures specified in 
Sec. 63.1325(c) for batch process vents and Sec. 63.1325(e) for 
aggregate batch vent streams; and
    (iv) For a scrubber or other control device following a combustion 
device to control halogenated batch process vents or halogenated 
aggregate batch vent streams, the percent reduction of total hydrogen 
halides and halogens as determined under Sec. 63.1325(d)(3) or the 
emission limit determined under Sec. 63.1325(d)(4).
    (5) When complying with the 20 parts per million by volume outlet 
concentration standard specified in Sec. 63.1322(b)(2), records of the 
outlet concentration of organic HAP or TOC on a dry basis. If 
supplemental combustion air is used to combust the emissions, the outlet 
concentration shall be corrected to 3 percent oxygen. If supplemental 
combustion air is not used, a correction to 3 percent oxygen is not 
required.
    (c) Establishment of parameter monitoring level records. For each 
parameter monitored according to Sec. 63.1324(c) and Table 7 of this 
subpart, or for alternate parameters and/or parameters for alternate 
control devices monitored according to Sec. 63.1327(f) as allowed under 
Sec. 63.1324(d), maintain documentation showing the establishment of the 
level that indicates proper operation of the control device as required 
by Sec. 63.1324(f) for parameters specified in Sec. 63.1324(c) and as 
required by Sec. 63.1335(e) for alternate parameters. Said documentation 
shall include the parameter monitoring data used to establish the level.
    (d) Group 2 batch process vent continuous compliance records. The 
owner or operator of a Group 2 batch process

[[Page 223]]

vent shall comply with either paragraph (d)(1) or (d)(2) of this 
section, as appropriate.
    (1) The owner or operator of a Group 2 batch process vent complying 
with Sec. 63.1322(g) shall keep the following records up-to-date and 
readily accessible:
    (i) Records designating the established batch cycle limitation 
required by Sec. 63.1322(g)(1) and specified in Sec. 63.1325(g).
    (ii) Records specifying the number and type of batch cycles 
accomplished for each three month period.
    (2) The owner or operator of a Group 2 batch process vent complying 
with Sec. 63.1322(f) shall keep the following records up-to-date and 
readily accessible:
    (i) Records designating the established batch cycle limitation 
required by Sec. 63.1322(f)(1) and specified in Sec. 63.1325(g).
    (ii) Records specifying the number and type of batch cycles 
accomplished for each three month period.
    (e) Controlled batch process vent continuous compliance records. 
Each owner or operator of a batch process vent that uses a control 
device to comply with Sec. 63.1322(a) shall keep the following records, 
as applicable, up-to-date and readily accessible:
    (1) Continuous records of the equipment operating parameters 
specified to be monitored under Sec. 63.1324(c) as applicable, and 
listed in Table 7 of this subpart, or specified by the Administrator in 
accordance with Sec. 63.1327(f) as allowed under Sec. 63.1324(d). Said 
records shall be kept as specified under Sec. 63.1335(d), except as 
specified in paragraphs (e)(1)(i) and (e)(1)(ii) of this section.
    (i) For flares, the records specified in Table 7 of this subpart 
shall be kept rather than averages.
    (ii) For carbon adsorbers, the records specified in Table 7 of this 
subpart shall be kept rather than averages.
    (2) Records of the batch cycle daily average value of each 
continuously monitored parameter, except as provided in paragraph 
(e)(2)(iii) of this section, as calculated using the procedures 
specified in paragraphs (e)(2)(i) through (e)(2)(ii) of this section.
    (i) The batch cycle daily average shall be calculated as the average 
of all parameter values measured for an operating day during those batch 
emission episodes, or portions thereof, in the batch cycle that the 
owner or operator has selected to control.
    (ii) Monitoring data recorded during periods of monitoring system 
breakdowns, repairs, calibration checks, and zero (low-level) and high-
level adjustments shall not be included in computing the batch cycle 
daily averages.
    (iii) If all recorded values for a monitored parameter during an 
operating day are above the minimum or below the maximum level 
established in accordance with Sec. 63.1324(f), the owner or operator 
may record that all values were above the minimum or below the maximum 
level established rather than calculating and recording a batch cycle 
daily average for that operating day.
    (3) Hourly records of whether the flow indicator for bypass lines 
specified in Sec. 63.1324(e)(1) was operating and whether a diversion 
was detected at any time during the hour. Also, records of the times of 
all periods when the vent is diverted from the control device or the 
flow indicator specified in Sec. 63.1324(e)(1) is not operating.
    (4) Where a seal or closure mechanism is used to comply with 
Sec. 63.1324(e)(2) or where computer monitoring of the position of the 
bypass valve is used to comply with Sec. 63.1324(e)(3), hourly records 
of flow are not required.
    (i) For compliance with Sec. 63.1324(e)(2), the owner or operator 
shall record whether the monthly visual inspection of the seals or 
closure mechanisms has been done, and shall record the occurrence of all 
periods when the seal mechanism is broken, the bypass line valve 
position has changed, or the key for a lock-and-key type configuration 
has been checked out, and records of any car-seal that has broken.
    (ii) For compliance with Sec. 63.1324(e)(3), the owner or operator 
shall record the times of all periods when the bypass line valve 
position has changed.
    (5) Records specifying the times and duration of periods of 
monitoring system breakdowns, repairs, calibration checks, and zero 
(low-level) and high-

[[Page 224]]

level adjustments. In addition, records specifying any other periods of 
process or control device operation when monitors are not operating.
    (f) Aggregate batch vent stream continuous compliance records. In 
addition to the records specified in paragraphs (b) and (c) of this 
section, each owner or operator of an aggregate batch vent stream using 
a control device to comply with Sec. 63.1322(b) shall keep records in 
accordance with the requirements for continuous process vents in 
Sec. 63.118 (a) and (b), as applicable and as appropriate, except that 
when complying with Sec. 63.118(b), owners or operators shall disregard 
statements concerning TRE index values for the purposes of this subpart.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1327  Batch process vents--reporting requirements.

    (a) The owner or operator of a batch process vent or aggregate batch 
vent stream at an affected source shall submit the information specified 
in paragraphs (a)(1) through (a)(4) of this section, as appropriate, as 
part of the Notification of Compliance Status specified in 
Sec. 63.1335(e)(5).
    (1) For each batch process vent complying Sec. 63.1322(a) and each 
aggregate batch vent stream complying Sec. 63.1322(b), the information 
specified in Sec. 63.1326 (b) and (c), as applicable.
    (2) For each Group 2 batch process vent with annual emissions less 
than the level specified in Sec. 63.1323(d), the information specified 
in Sec. 63.1326(d)(1)(i).
    (3) For each Group 2 batch process vent with annual emissions 
greater than or equal to the level specified in Sec. 63.1323(d), the 
information specified in Sec. 63.1326(d)(2)(i).
    (4) For each batch process vent subject to the group determination 
procedures, the information specified in Sec. 63.1326(a), as 
appropriate.
    (b) Whenever a process change, as defined in Sec. 63.1323(i)(1), is 
made that causes a Group 2 batch process vent to become a Group 1 batch 
process vent, the owner or operator shall submit a report within 180 
operating days after the process change is made or the information 
regarding the process change is known to the owner or operator. This 
report may be included in the next Periodic Report, as specified in 
Sec. 63.1335(e)(6)(iii)(D)(2). The following information shall be 
submitted:
    (1) A description of the process change; and
    (2) A schedule for compliance with the provisions of Sec. 63.1322 
(a) or (b), as appropriate, as required under 
Sec. 63.1335(e)(6)(iii)(D)(2).
    (c) Whenever a process change, as defined in Sec. 63.1323(i)(1), is 
made that causes a Group 2 batch process vent with annual emissions less 
than the level specified in Sec. 63.1323(d) that is in compliance with 
Sec. 63.1322(g) to have annual emissions greater than or equal to the 
level specified in Sec. 63.1323(d) but remains a Group 2 batch process 
vent, the owner or operator shall submit a report within 180 operating 
days after the process change is made or the information regarding the 
process change is known to the owner or operator. This report may be 
included in the next Periodic Report, as specified in 
Sec. 63.1335(e)(6)(iii)(D)(2). The following information shall be 
submitted:
    (1) A description of the process change;
    (2) The results of the redetermination of the annual emissions, 
average flow rate, and cutoff flow rate required under Sec. 63.1323(i) 
and recorded under Sec. 63.1326 (a)(3) through (a)(5); and
    (3) The batch cycle limitation determined in accordance with 
Sec. 63.1322(f)(1).
    (d) Whenever a process change, as defined in Sec. 63.1323(j)(1), is 
made that causes the percent reduction for all process vents at a new 
SAN affected source using a batch process to be less than 84 percent, 
the owner or operator shall submit a report within 180 operating days 
after the process change is made or the information regarding the 
process change is known to the owner or operator. This report may be 
included in the next Periodic Report, as specified in 
Sec. 63.1335(e)(6)(iii)(D)(2). The following information shall be 
submitted:
    (1) A description of the process change; and
    (2) A schedule for compliance with the provisions of 
Sec. 63.1322(a)(3), as required under Sec. 63.1335(e)(6)(iii)(D)(2).
    (e) The owner or operator is not required to submit a report of a 
process

[[Page 225]]

change if one of the conditions specified in paragraphs (e)(1) and 
(e)(2) of this section is met.
    (1) The process change does not meet the description of a process 
change in Sec. 63.1323 (i) or (j).
    (2) The redetermined group status remains Group 2 for an individual 
batch process vent with annual emissions greater than or equal to the 
level specified in Sec. 63.1323(d), a Group 2 batch process vent with 
annual emissions less than the level specified in Sec. 63.1323(d) 
complying with Sec. 63.1322(g) continues to have emissions less than the 
level specified in Sec. 63.1323(d), or the achieved emission reduction 
remains at 84 percent or greater for new SAN affected sources using a 
batch process.
    (f) If an owner or operator uses a control device other than those 
specified in Sec. 63.1324(c) and listed in Table 7 of this subpart or 
requests approval to monitor a parameter other than those specified 
Sec. 63.1324(c) and listed in Table 7 of this subpart, the owner or 
operator shall submit a description of planned reporting and 
recordkeeping procedures, as specified in Sec. 63.1335(f), as part of 
the Precompliance Report required under Sec. 63.1335(e)(3). The 
Administrator will specify appropriate reporting and recordkeeping 
requirements as part of the review of the Precompliance Report.
    (g) Owners or operators complying with Sec. 63.1324(e), shall comply 
with paragraph (g)(1) or (g)(2) of this section, as appropriate.
    (1) Reports of the times of all periods recorded under 
Sec. 63.1326(e)(3) when the batch process vent is diverted from the 
control device through a bypass line.
    (2) Reports of all occurrences recorded under Sec. 63.1326(e)(4) in 
which the seal mechanism is broken, the bypass line valve position has 
changed, or the key to unlock the bypass line valve was checked out.



Sec. 63.1328  Heat exchange systems provisions.

    (a) This section applies to each affected source with the exception 
of each process contact cooling tower that is associated with an 
affected source manufacturing PET. The owner or operator of said 
affected source shall comply with Sec. 63.104, with the differences 
noted in paragraphs (b) through (d) of this section, for the purposes of 
this subpart.
    (b) When the Periodic Report requirements contained in 
Sec. 63.152(c) are referred to in Sec. 63.104(b), the Periodic Report 
requirements contained in Sec. 63.1335(e)(6) shall apply for the 
purposes of this subpart.
    (c) When an owner or operator invokes the delay of repair provisions 
as specified in Sec. 63.104(b)(3), the information required by 
Sec. 63.104 (b)(4)(i) through (b)(4)(v) shall be included in the next 
semi-annual Periodic Report required under Sec. 63.1335(e)(6), for the 
purposes of this subpart. If the leak remains unrepaired, the 
information shall also be submitted in each subsequent Periodic Report, 
until the repair of the leak is reported.
    (d) The compliance date for heat exchange systems subject to the 
provisions of this section is specified in Sec. 63.1311.



Sec. 63.1329  Process contact cooling towers provisions.

    (a) This section applies to each new affected source that 
manufactures PET and each existing affected source that manufactures PET 
using a continuous terephthalic acid high viscosity multiple end 
finisher process. The owner or operator a new affected source shall 
comply with paragraph (b) of this section. The owner or operator of an 
existing affected source that manufactures PET using a continuous 
terephthalic acid high viscosity multiple end finisher process shall 
comply with paragraph (c) of this section. The compliance data for 
process contact cooling towers subject to the provisions of this section 
is specified in Sec. 63.1311.
    (b) New affected source requirements. The owner or operator of a new 
affected source subject to this section shall comply with paragraphs 
(b)(1) through (b)(2) of this section.
    (1) The owner or operator of a new affected source subject to this 
section shall not send contact condenser effluent associated with a 
vacuum system to a process contact cooling tower.
    (2) The owner or operator of a new affected source subject to this 
section shall indicate in the Notification of Compliance Status, as 
required in

[[Page 226]]

Sec. 63.1335(e)(5), that contact condenser effluent associated with 
vacuum systems is not sent to process contact cooling towers.
    (c) Existing affected source requirements. The owner or operator of 
an existing affected source subject to this section who manufactures PET 
using a continuous terephthalic acid high viscosity multiple end 
finisher process, and who is subject or becomes subject to 40 CFR part 
60, subpart DDD, shall maintain an ethylene glycol concentration in the 
cooling tower at or below 4.0 percent by weight averaged on a daily 
basis over a rolling 14-day period of operating days. Compliance with 
this paragraph (c) shall be determined as specified in paragraphs (c)(1) 
through (c)(4) of this section.
    (1) To determine the ethylene glycol concentration, owners or 
operators shall follow the procedures specified in 40 CFR 60.564(j)(1), 
except as provided in paragraph (c)(2) of this section.
    (i) At least one sample per operating day shall be collected using 
the procedures specified in 40 CFR 60.564(j)(1)(i). An average ethylene 
glycol concentration by weight shall be calculated on a daily basis over 
a rolling 14-day period of operating days. Each daily average ethylene 
glycol concentration so calculated constitutes a performance test. 
Exceedance of the standard during the reduced testing program specified 
in paragraph (b)(1)(ii) of this section is a violation of these 
standards.
    (ii) The owner or operator may elect to reduce the sampling program 
to any 14 consecutive day period once every two calendar months, if at 
least seventeen consecutive 14-day rolling average concentrations 
immediately preceding the reduced sampling program are each less than 
1.2 weight percent ethylene glycol. If the average concentration 
obtained over the 14 day sampling during the reduced test period exceeds 
the upper 95 percent confidence interval calculated from the most recent 
test results in which no one 14-day average exceeded 1.2 weight percent 
ethylene glycol, then the owner or operator shall reinstitute a daily 
sampling program. The 95 percent confidence interval shall be calculated 
as specified in paragraph (b)(1)(iii) of this section. A reduced program 
may be reinstituted if the requirements specified in this paragraph 
(c)(1)(ii) are met.
    (iii) The upper 95 percent confidence interval shall be calculated 
using the Equation 27 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR12SE96.026


where:

Xi = daily ethylene glycol concentration for each day used to 
calculate each 14-day rolling average used in test results to justify 
implementing the reduced testing program.
n = number of ethylene glycol concentrations.

    (2) Measuring an alternative parameter, such as carbon oxygen demand 
or biological oxygen demand, that is demonstrated to be directly 
proportional to the ethylene glycol concentration shall be allowed. Such 
parameter shall be measured during the initial 14-day performance test 
during which the facility is shown to be in compliance with the ethylene 
glycol concentration standard whereby the ethylene glycol concentration 
is determined using the procedures described in paragraph (b)(1) of this 
section. The alternative parameter shall be measured on a daily basis 
and the average value of the alternative parameter shall be calculated 
on a daily basis over a rolling 14-day period of operating days. Each 
daily average value of the alternative parameter constitutes a 
performance test.
    (3) During each performance test, daily measurement and daily 
average 14-day rolling averages of the ethylene

[[Page 227]]

glycol concentration in the cooling tower water shall be recorded. For 
the initial performance test, these records shall be submitted in the 
Notification of Compliance Status report.
    (4) All periods when the 14-day rolling average exceeds the standard 
shall be reported in the Periodic Report.



Sec. 63.1330  Wastewater provisions.

    (a) The owner or operator of each affected source shall comply with 
the requirements of Secs. 63.131 through 63.148, with the differences 
noted in paragraphs (a)(1) through (a)(12) of this section for the 
purposes of this subpart.
    (1) When the determination of equivalence criteria in Sec. 63.102(b) 
is referred to in Secs. 63.132, 63.133, and 63.137, the provisions in 
Sec. 63.6(g) shall apply.
    (2) When the storage tank requirements contained in Secs. 63.119 
through 63.123 are referred to in Secs. 63.132 through 63.148, 
Secs. 63.119 through 63.123 are applicable, with the exception of the 
differences referred to in Sec. 63.1314, for the purposes of this 
subpart.
    (3) When the owner or operator requests to use alternatives to the 
continuous operating parameter monitoring and recordkeeping provisions 
referred to in Sec. 63.151(g), or the owner or operator submits an 
operating permit application instead of an Implementation Plan as 
specified in Sec. 63.152(e), as referred to in Sec. 63.146(a)(3), 
Sec. 63.1335(g) and Sec. 63.1335(e)(8), respectively, shall apply for 
the purposes of this subpart.
    (4) When the Notification of Compliance Status requirements 
contained in Sec. 63.152(b) are referred to in Secs. 63.146 and 63.147, 
the Notification of Compliance Status requirements contained in 
Sec. 63.1335(e)(5) shall apply for the purposes of this subpart.
    (5) When the Periodic Report requirements contained in 
Sec. 63.152(c) are referred to in Secs. 63.146 and 63.147, the Periodic 
Report requirements contained in Sec. 63.1335(e)(6) shall apply for the 
purposes of this subpart.
    (6) When the Initial Notification Plan requirements in 
Sec. 63.151(b) are referred to in Sec. 63.146, the owner or operator of 
an affected source subject to this subpart need not comply for the 
purposes of this subpart.
    (7) When the Implementation Plan requirements contained in 
Sec. 63.151 are referred to in Sec. 63.146, the owner or operator of an 
affected source subject to this subpart need not comply for the purposes 
of this subpart.
    (8) When the term ``range'' is used in Sec. 63.143(f), the term 
``level'' shall be used instead for the purposes of this subpart. This 
level shall be determined using the procedures specified in 
Sec. 63.1334.
    (9) For the purposes of this subpart, owners or operators are not 
required to comply with the provisions of Sec. 63.138(e)(2) which 
specify that owners or operators shall demonstrate that 95 percent of 
the mass of HAP, as listed in Table 9 of subpart G of this part, is 
removed from the wastewater stream or combination of wastewater streams 
by the procedure specified in Sec. 63.145(i) for a biological treatment 
unit.
    (10) For the purposes of this subpart, owners or operators are not 
required to comply with the provisions of Sec. 63.138(j)(3) which 
specify that owners or operators shall use the procedures specified in 
appendix C of this part to demonstrate compliance when using a 
biological treatment unit.
    (11) When the provisions of Sec. 63.139(c)(1)(ii) or the provisions 
of Sec. 63.145(e)(2)(ii)(B) specify that Method 18, 40 CFR part 60, 
appendix A, shall be used, Method 18 or Method 25A, 40 CFR part 60, 
appendix A, may be used for the purposes of this subpart. The use of 
Method 25A, 40 CFR part 60, appendix A, shall comply with paragraphs 
(a)(11)(i) and (a)(11)(ii) of this section.
    (i) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A, shall be the single organic HAP representing 
the largest percent by volume of the emissions.
    (ii) The use of Method 25A, 40 CFR part 60, appendix A, is 
acceptable if the response from the high-level calibration gas is at 
least 20 times the standard deviation of the response from the zero 
calibration gas when the instrument is zeroed on the most sensitive 
scale.
    (12) The compliance date for the affected source subject to the 
provisions of this section is specified in Sec. 63.1311.
    (b) For each affected source, the owner or operator shall comply 
with the requirements for maintenance wastewater in Sec. 63.105, except 
that when

[[Page 228]]

Sec. 63.105(a) refers to ``organic HAPs,'' the definition of organic HAP 
in Sec. 63.1312 shall apply for the purposes of this subpart.
    (c) [Reserved]
    (d) The provisions of paragraph (b) of this section do not apply to 
each affected source producing ASA/AMSAN.
    (e) The provisions of paragraphs (a), (b), and (c) of this section 
do not apply to each affected source producing polystyrene using either 
a continuous or batch process.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1331  Equipment leak provisions.

    (a) Except as provided in paragraphs (b) and (c) of this section, 
the owner or operator of each affected source shall comply with the 
requirements of subpart H of this part, with the differences noted in 
paragraphs (a)(1) through (a)(10) of this section.
    (1) For an affected source producing polystyrene resin, the 
indications of liquids dripping, as defined in subpart H of this part, 
from bleed ports in pumps and agitator seals in light liquid service 
shall not be considered to be a leak. For purposes of this subpart, a 
``bleed port'' is a technologically-required feature of the pump or seal 
whereby polymer fluid used to provide lubrication and/or cooling of the 
pump or agitator shaft exits the pump, thereby resulting in a visible 
dripping of fluid.
    (2) The compliance date for the equipment leak provisions contained 
in this section is provided in Sec. 63.1311.
    (3) Owners and operators of an affected source subject to this 
subpart are not required to submit the Initial Notification required by 
Sec. 63.182(a)(1) and Sec. 63.182(b).
    (4) The Notification of Compliance Status required by paragraphs 
Sec. 63.182(a)(2) and Sec. 63.182(c) shall be submitted within 150 days 
(rather than 90 days) of the applicable compliance date specified in 
Sec. 63.1311 for the equipment leak provisions. Said notification can be 
submitted as part of the Notification of Compliance Status required by 
Sec. 63.1335(e)(5).
    (5) The Periodic Reports required by Sec. 63.182(a)(3) and 
Sec. 63.182(d) may be submitted as part of the Periodic Reports required 
by Sec. 63.1335(e)(6).
    (6) For an affected source producing PET, an owner or operator shall 
comply with the requirements of paragraphs (a)(6)(i) and (a)(6)(ii) of 
this section instead of with the requirements of Sec. 63.169 for pumps, 
valves, connectors, and agitators in heavy liquid service; pressure 
relief devices in light liquid or heavy liquid service; and 
instrumentation systems.
    (i) A leak is determined to be detected if there is evidence of a 
potential leak found by visual, audible, olfactory, or any other 
detection method except that Method 21, 40 CFR part 60, appendix A shall 
not be used to determine if a leak is detected.
    (ii)(A) When a leak is detected, it shall be repaired as soon as 
practicable, but not later than 15 calendar days after it is detected, 
except as provided in Sec. 63.171.
    (B) The first attempt at repair shall be made no later than 5 
calendar days after each leak is detected.
    (C) Repaired shall mean that the visual, audible, olfactory, or 
other indications of a leak have been eliminated; that no bubbles are 
observed at potential leak sites during a leak check using soap 
solution; or that the system will hold a test pressure.
    (7) For each affected source producing PET, an owner or operator is 
not required to develop an initial list of identification numbers for 
the equipment identified in paragraph (a)(6) of this section (i.e., 
pumps, valves, connectors, and agitators in heavy liquid service; 
pressure relief devices in light liquid or heavy liquid service; and 
instrumentation systems) as would otherwise be required under 
Sec. 63.181(b)(1)(i).
    (8) When the provisions of subpart H of this part specify that 
Method 18, 40 CFR part 60, appendix A, shall be used, Method 18 or 
Method 25A, 40 CFR part 60, appendix A, may be used for the purposes of 
this subpart. The use of Method 25A, 40 CFR part 60, appendix A, shall 
comply with paragraphs (a)(8)(i) and (a)(8)(ii) of this section.
    (i) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A, shall be the single organic HAP representing 
the largest percent by volume of the emissions.

[[Page 229]]

    (ii) The use of Method 25A, 40 CFR part 60, appendix A, is 
acceptable if the response from the high-level calibration gas is at 
least 20 times the standard deviation of the response from the zero 
calibration gas when the instrument is zeroed on the most sensitive 
scale.
    (9) For purposes of this subpart, bottoms receivers and surge 
control vessels are not considered equipment for purposes of this 
section and are not subject to the requirements of subpart H of this 
part.
    (10) The owner or operator of each affected source shall substitute 
the phrase ``the provisions of subparts F, I, or JJJ of this part'' for 
both the phrases ``the provisions of subparts F or I of this part'' and 
the phrase ``the provisions of subpart F or I of this part'' throughout 
Secs. 63.163 and 63.168, for the purposes of this subpart. In addition, 
the owner or operator of each affected source shall substitute the 
phrase ``subparts F, I, and JJJ'' for the phrase ``subparts F and I'' in 
Sec. 63.174(c)(2)(iii), for the purposes of this subpart.
    (b) The provisions of this section do not apply to each TPPU 
producing PET using a process other than a continuous terephthalic acid 
(TPA) high viscosity multiple end finisher process that is part of an 
affected source if all of the components in the TPPU are either in 
vacuum service or in heavy liquid service.
    (1) Owners and operators of a TPPU exempted under paragraph (b) of 
this section shall retain at the facility information, data, and 
analyses used to demonstrate that all of the components in the exempted 
TPPU are either in vacuum service or in heavy liquid service. Such 
documentation shall include an analysis or demonstration that the 
process fluids do not meet the criteria of ``in light liquid service'' 
or ``in gas or vapor service.'' Examples of information that could 
document this include, but are not limited to, records of chemicals 
purchased for the process, analyses of process stream composition, 
engineering calculations, or process knowledge.
    (2) If changes occur at a TPPU exempted under paragraph (b) of this 
section such that all of the components in the TPPU are no longer either 
in vacuum service or in heavy liquid service (e.g., by either process 
changes or the addition of new components), the owner or operator shall 
comply with the provisions of this section for all of the components at 
the TPPU. The owner or operator shall submit a report within 180 days 
after the process change is made or the information regarding the 
process change is known to the owner or operator. This report may be 
included in the next Periodic Report, as specified in paragraph (a)(5) 
of this section. The following information shall be submitted:
    (i) A description of the process change; and
    (ii) A schedule for compliance with the provisions of 
Sec. 63.1331(a), as specified in paragraphs (b)(2)(ii)(A) and 
(b)(2)(ii)(B) of this section.
    (A) The owner or operator shall submit to the Administrator for 
approval a compliance schedule and a justification for the schedule.
    (B) The Administrator shall approve the compliance schedule or 
request changes within 120 operating days of receipt of the compliance 
schedule and justification.
    (c) The provisions of this section do not apply to each affected 
source producing PET using a continuous TPA high viscosity multiple end 
finisher process.

[61 FR 48229, Sept. 12, 1996, as amended at 62 FR 37722, July 15, 1997]



Sec. 63.1332  Emissions averaging provisions.

    (a) This section applies to owners or operators of existing affected 
sources who seek to comply with Sec. 63.1313(b) by using emissions 
averaging rather than following the provisions of Secs. 63.1314, 
63.1315, 63.1316 through 63.1320, 63.1321, and 63.1330.
    (1) The following emission point limitations apply to the use of 
these provisions:
    (i) All emission points included in an emissions average shall be 
from the same affected source. There may be an emissions average for 
each affected source located at a plant site.
    (ii)(A) If a plant site has only one affected source for which 
emissions averaging is being used to demonstrate

[[Page 230]]

compliance, the number of emission points allowed in the emissions 
average for said affected source is limited to twenty. This number may 
be increased by up to five additional emission points if pollution 
prevention measures are used to control five or more of the emission 
points included in the emissions average.
    (B) If a plant site has two or more affected sources for which 
emissions averaging is being used to demonstrate compliance, the number 
of emission points allowed in the emissions averages for said affected 
sources is limited to twenty. This number may be increased by up to five 
additional emission points if pollution prevention measures are used to 
control five or more of the emission points included in the emissions 
averages.
    (2) Compliance with the provisions of this section may be based on 
either organic HAP or TOC.
    (3) For the purposes of these provisions, whenever Method 18, 40 CFR 
part 60, appendix A, is specified within the paragraphs of this section 
or is specified by reference through provisions outside this section, 
Method 18 or Method 25A, 40 CFR part 60, appendix A, may be used. The 
use of Method 25A, 40 CFR part 60, appendix A, shall conform with the 
requirements in paragraphs (a)(3)(i) and (a)(3)(ii) of this section.
    (i) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A shall be the single organic HAP representing the 
largest percent by volume of the emissions.
    (ii) The use of Method 25A, 40 CFR part 60, appendix A is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (b) Unless an operating permit application has been submitted, the 
owner or operator shall develop and submit for approval an Emissions 
Averaging Plan containing all of the information required in 
Sec. 63.1335(e)(4) for all emission points to be included in an 
emissions average.
    (c) Paragraphs (c)(1) through (c)(5) of this section describe the 
emission points that may be used to generate emissions averaging credits 
if control was applied after November 15, 1990, and if sufficient 
information is available to determine the appropriate value of credits 
for the emission point. Paragraph (c)(6) of this section discusses the 
use of pollution prevention in generating emissions averaging credits.
    (1) Storage vessels, batch process vents, aggregate batch vent 
streams, continuous process vents subject to Sec. 63.1315, and process 
wastewater streams that are determined to be Group 2 emission points. 
The term ``continuous process vents subject to Sec. 63.1315'' includes 
continuous process vents subject to Sec. 63.1316 (b)(1)(iii), 
(b)(2)(iii), and (c)(2), which reference Sec. 63.1315.
    (2) Continuous process vents located in the collection of material 
recovery sections within the affected source at an existing affected 
source producing PET using a continuous dimethyl terephthalate process 
subject to Sec. 63.1316(b)(1)(i) where the uncontrolled organic HAP 
emissions from said continuous process vents are equal to or less than 
0.12 kg organic HAP per Mg of product. These continuous process vents 
shall be considered Group 2 emission points for the purposes of this 
section.
    (3) Storage vessels, continuous process vents subject to 
Sec. 63.1315, and process wastewater streams that are determined to be 
Group 1 emission points and that are controlled by a technology that the 
Administrator or permitting authority agrees has a higher nominal 
efficiency than the reference control technology. Information on the 
nominal efficiencies for such technologies shall be submitted and 
approved as provided in paragraph (i) of this section.
    (4) Batch process vents and aggregate batch vent streams that are 
determined to be Group 1 emission points and that are controlled to a 
level more stringent than the applicable standard.
    (5) Continuous process vents subject to Sec. 63.1316 (b)(1)(i), 
(b)(1)(ii), (b)(2)(i), (b)(2)(ii), or (c)(1) located in the collection 
of process sections within the affected source, as specified in 
paragraphs (c)(5)(i) through (c)(5)(ii) of this

[[Page 231]]

section. The continuous process vents identified in paragraphs (c)(5)(i) 
through (c)(5)(ii) of this section shall be considered to be Group 1 
emission points for the purposes of this section.
    (i) Continuous process vents subject to Sec. 63.1316(b)(1)(i) 
located in the collection of material recovery sections within the 
affected source where the uncontrolled organic HAP emissions for said 
continuous process vents are greater than 0.12 kg organic HAP per Mg of 
product and said continuous process vents are controlled to a level more 
stringent than the applicable standard.
    (ii) Continuous process vents subject to Sec. 63.1316(b)(1)(ii), 
(b)(2)(i), (b)(2)(ii), or (c)(1) located in the collection of process 
sections within the affected source where the uncontrolled organic HAP 
emissions from said continuous process vents are controlled to a level 
more stringent than the applicable standard.
    (6) The percent reduction for any storage vessel, batch process 
vent, aggregate batch vent stream, continuous process vent, and process 
wastewater stream from which emissions are reduced by pollution 
prevention measures shall be determined using the procedures specified 
in paragraph (j) of this section.
    (i) For a Group 1 storage vessel, batch process vent, aggregate 
batch vent stream, continuous process vent, or process wastewater 
stream, the pollution prevention measure must reduce emissions more than 
if the applicable reference control technology or standard had been 
applied to the emission point instead of the pollution prevention 
measure, except as provided in paragraph (c)(6)(ii) of this section.
    (ii) If a pollution prevention measure is used in conjunction with 
other controls for a Group 1 storage vessel, batch process vent, 
aggregate batch vent stream, continuous process vent, or process 
wastewater stream, the pollution prevention measure alone does not have 
to reduce emissions more than the applicable reference control 
technology or standard, but the combination of the pollution prevention 
measure and other controls must reduce emissions more than if the 
applicable reference control technology or standard had been applied 
instead of the pollution prevention measure.
    (d) The following emission points cannot be used to generate 
emissions averaging credits:
    (1) Emission points already controlled on or before November 15, 
1990, cannot be used to generate credits unless the level of control is 
increased after November 15, 1990. In this case, credit will be allowed 
only for the increase in control after November 15, 1990.
    (2) Group 1 emission points, identified in paragraph (c)(3) of this 
section, that are controlled by a reference control technology cannot be 
used to generate credits unless the reference control technology has 
been approved for use in a different manner and a higher nominal 
efficiency has been assigned according to the procedures in paragraph 
(i) of this section.
    (3) Emission points for nonoperating TPPU cannot be used to generate 
credits. TPPU that are shutdown cannot be used to generate credits or 
debits.
    (4) Maintenance wastewater cannot be used to generate credits. 
Wastewater streams treated in biological treatment units cannot be used 
to generate credits. These two types of wastewater cannot be used to 
generate credits or debits. For the purposes of this section, the terms 
wastewater and wastewater stream are used to mean process wastewater.
    (5) Emission points controlled to comply with a State or Federal 
rule other than this subpart cannot be used to generate credits, unless 
the level of control has been increased after November 15, 1990, to a 
level above what is required by the other State or Federal rule. Only 
the control above what is required by the other State or Federal rule 
will be credited. However, if an emission point has been used to 
generate emissions averaging credit in an approved emissions average, 
and the emission point is subsequently made subject to a State or 
Federal rule other than this subpart, the emission point may continue to 
generate emissions averaging credit for the purpose of complying with 
the previously approved emissions average.
    (e) For all emission points included in an emissions average, the 
owner or

[[Page 232]]

operator shall perform the following tasks:
    (1) Calculate and record monthly debits for all Group 1 emission 
points that are controlled to a level less stringent than the reference 
control technology or standard for those emission points. Said Group 1 
emission points are identified in paragraphs (c)(3) through (c)(5) of 
this section. Equations in paragraph (g) of this section shall be used 
to calculate debits.
    (2) Calculate and record monthly credits for all Group 1 and Group 2 
emission points that are over-controlled to compensate for the debits. 
Equations in paragraph (h) of this section shall be used to calculate 
credits. Emission points and controls that meet the criteria of 
paragraph (c) of this section may be included in the credit calculation, 
whereas those described in paragraph (d) of this section shall not be 
included.
    (3) Demonstrate that annual credits calculated according to 
paragraph (h) of this section are greater than or equal to debits 
calculated for the same annual compliance period according to paragraph 
(g) of this section.
    (i) The owner or operator may choose to include more than the 
required number of credit-generating emission points in an emissions 
average in order to increase the likelihood of being in compliance.
    (ii) The initial demonstration in the Emissions Averaging Plan or 
operating permit application that credit-generating emission points will 
be capable of generating sufficient credits to offset the debits from 
the debit-generating emission points shall be made under representative 
operating conditions. After the compliance date, actual operating data 
will be used for all debit and credit calculations.
    (4) Demonstrate that debits calculated for a quarterly (3-month) 
period according to paragraph (g) of this section are not more than 1.30 
times the credits for the same period calculated according to paragraph 
(h) of this section. Compliance for the quarter shall be determined 
based on the ratio of credits and debits from that quarter, with 30 
percent more debits than credits allowed on a quarterly basis.
    (5) Record and report quarterly and annual credits and debits in the 
Periodic Reports as specified in Sec. 63.1335(e)(6). Every fourth 
Periodic Report shall include a certification of compliance with the 
emissions averaging provisions as required by 
Sec. 63.1335(e)(6)(x)(C)(2).
    (f) Debits and credits shall be calculated in accordance with the 
methods and procedures specified in paragraphs (g) and (h) of this 
section, respectively, and shall not include emissions during the 
following periods:
    (1) Emissions during periods of start-up, shutdown, and malfunction, 
as described in the Start-up, Shutdown, and Malfunction Plan.
    (2) Emissions during periods of monitoring excursions, as defined in 
Sec. 63.1334(d). For these periods, the calculation of monthly credits 
and debits shall be adjusted as specified in paragraphs (f)(2)(i) 
through (f)(2)(iii) of this section.
    (i) No credits would be assigned to the credit-generating emission 
point.
    (ii) Maximum debits would be assigned to the debit-generating 
emission point.
    (iii) The owner or operator may demonstrate to the Administrator 
that full or partial credits or debits should be assigned using the 
procedures in paragraph (l) of this section.
    (g) Debits are generated by the difference between the actual 
emissions from a Group 1 emission point that is uncontrolled or is 
controlled to a level less stringent than the applicable reference 
control technology or standard and the emissions allowed for the Group 1 
emission point. Said Group 1 emission points are identified in 
paragraphs (c)(3) through (c)(5) of this section. Debits shall be 
calculated as follows:
    (1) Source-wide debits shall be calculated using Equation 28 of this 
subpart. Debits and all terms of Equation 28 of this subpart are in 
units of megagrams per month:

[[Page 233]]

[GRAPHIC] [TIFF OMITTED] TR09MR99.008

Where:
ECPViACTUAL = Emissions from each Group 1 continuous process 
vent i subject to Sec. 63.1315 that is uncontrolled or is controlled to 
a level less stringent than the applicable reference control technology. 
ECPViACTUAL is calculated according to paragraph (g)(2) of 
this section.
(0.02)ECPViu = Emissions from each Group 1 continuous process 
vent i subject to Sec. 63.1315 if the applicable reference control 
technology had been applied to the uncontrolled emissions. 
ECPViu is calculated according to paragraph (g)(2) of this 
section.
ECPVSjACTUAL = Emissions from Group 1 continuous process 
vents subject to Sec. 63.1316(b)(1)(i), (b)(1)(ii), (b)(2)(i), 
(b)(2)(ii), or (c)(1) located in the collection of process sections j 
within the affected source that are uncontrolled or controlled to a 
level less stringent than the applicable standard. 
ECPVSjACTUAL is calculated according to paragraph (g)(3) of 
this section.
ECPVSjSTD = Emissions from Group 1 continuous process vents 
subject to Sec. 63.1316(b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or 
(c)(1) located in the collection of process sections j within the 
affected source if the applicable standard had been applied to the 
uncontrolled emissions. ECPVSjSTD is calculated according to 
paragraph (g)(3) of this section.
ESiACTUAL = Emissions from each Group 1 storage vessel i that 
is uncontrolled or is controlled to a level less stringent than the 
applicable reference control technology or standard. 
ESiACTUAL is calculated according to paragraph (g)(4) of this 
section.
(BL)ESiu = Emissions from each Group 1 storage vessel i if 
the applicable reference control technology or standard had been applied 
to the uncontrolled emissions. ESiu is calculated according 
to paragraph (g)(4) of this section. For calculating emissions, BL = 
0.05 for each Group 1 storage vessel i subject to Sec. 63.1314(a); and 
BL = 0.02 for each storage vessel i subject to Sec. 63.1314(c).
EWWiACTUAL = Emissions from each Group 1 wastewater stream i 
that is uncontrolled or is controlled to a level less stringent than the 
applicable reference control technology. EWWiACTUAL is 
calculated according to paragraph (g)(5) of this section.
EWWic = Emissions from each Group 1 wastewater stream i if 
the reference control technology had been applied to the uncontrolled 
emissions. EWWic is calculated according to paragraph (g)(5) 
of this section.
EBPViACTUAL = Emissions from each Group 1 batch process vent 
i that is uncontrolled or is controlled to a level less stringent than 
the applicable standard. EBPVACTUAL is calculated according 
to paragraph (g)(6) of this section.
(0.10)EBPViu = Emissions from each Group 1 batch process vent 
i if the applicable standard had been applied to the uncontrolled 
emissions. EBPViu is calculated according to paragraph (g)(6) 
of this section.
EABViACTUAL = Emissions from each Group 1 aggregate batch 
vent stream i that is uncontrolled or is controlled to a level less 
stringent than the applicable standard. EABPViACTUAL is 
calculated according to paragraph (g)(7) of this section.
(0.10)EABViu = Emissions from each Group 1 aggregate batch 
vent stream i if the applicable standard had been applied to the 
uncontrolled emissions. EABViu is calculated according to 
paragraph (g)(7) of this section.
n = The number of emission points being included in the emissions 
average.

    (2) Emissions from continuous process vents subject to Sec. 63.1315 
shall be calculated as follows:
    (i) For purposes of determining continuous process vent stream flow 
rate, organic HAP concentrations, and temperature, the sampling site 
shall be after the final product recovery device, if any recovery 
devices are present; before any control device (for continuous process 
vents, recovery devices shall not be considered control devices); and 
before discharge to the atmosphere. Method 1 or 1A, 40 CFR part 60, 
appendix A, shall be used for selection of the sampling site.

[[Page 234]]

    (ii) ECPViu for each continuous process vent i shall be 
calculated using Equation 29 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.028

where:

ECPViu=Uncontrolled continuous process vent emission rate 
from continuous process vent i, megagrams per month.
Q=Vent stream flow rate, dry standard cubic meters per minute, measured 
using Method 2, 2A, 2C, or 2D, 40 CFR part 60, appendix A, as 
appropriate.
h=Monthly hours of operation during which positive flow is present in 
the continuous process vent, hours per month.
Cj=Concentration, parts per million by volume, dry basis, of organic HAP 
j as measured by Method 18, 40 CFR part 60, appendix A.
Mj=Molecular weight of organic HAP j, gram per gram-mole.
n=Number of organic HAP in stream.

    (A) The values of Q and Cj shall be determined during a performance 
test conducted under representative operating conditions. The values of 
Q and Cj shall be established in the Notification of Compliance Status 
and shall be updated as provided in paragraph (g)(2)(ii)(B) of this 
section.
    (B) If there is a change in capacity utilization other than a change 
in monthly operating hours, or if any other change is made to the 
process or product recovery equipment or operation such that the 
previously measured values of Q and Cj are no longer representative, a 
new performance test shall be conducted to determine new representative 
values of Q and Cj. These new values shall be used to calculate debits 
and credits from the time of the change forward, and the new values 
shall be reported in the next Periodic Report.
    (iii) The following procedures and equations shall be used to 
calculate ECPViACTUAL:
    (A) If the continuous process vent is not controlled by a control 
device or pollution prevention measure, 
ECPViACTUAL=ECPViu, where ECPViu is 
calculated according to the procedures in paragraphs (g)(2)(i) and 
(g)(2)(ii) of this section.
    (B) If the continuous process vent is controlled using a control 
device or a pollution prevention measure achieving less than 98 percent 
reduction, calculate ECPViACTUAL using Equation 30 of this 
subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.029

    (1) The percent reduction shall be measured according to the 
procedures in Sec. 63.116 if a combustion control device is used. For a 
flare meeting the criteria in Sec. 63.116(a), or a boiler or process 
heater meeting the criteria in Sec. 63.116(b), the percent reduction 
shall be 98 percent. If a noncombustion control device is used, percent 
reduction shall be demonstrated by a performance test at the inlet and 
outlet of the device, or, if testing is not feasible, by a control 
design evaluation and documented engineering calculations.
    (2) For determining debits from Group 1 continuous process vents,

[[Page 235]]

product recovery devices shall not be considered control devices and 
cannot be assigned a percent reduction in calculating 
ECPViACTUAL. The sampling site for measurement of 
uncontrolled emissions is after the final product recovery device. 
However, as provided in Sec. 63.113(a)(3), a Group 1 continuous process 
vent may add sufficient product recovery to raise the TRE index value 
above 1.0 or, for Group 1 continuous process vents at an existing 
affected source producing MBS, above 3.7, thereby becoming a Group 2 
continuous process vent. Such a continuous process vent would not be a 
Group 1 continuous process vent and would, therefore, not be included in 
determining debits under this paragraph (g)(2)(iii)(B)(2).
    (3) Procedures for calculating the percent reduction of pollution 
prevention measures are specified in paragraph (j) of this section.
    (3) Emissions from continuous process vents located in the 
collection of process sections within the affected source subject to 
Sec. 63.1316 (b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or (c)(1) 
shall be calculated as follows:
    (i) The total organic HAP emissions from continuous process vents 
located in the collection of process sections j within the affected 
source, ECPVSjACTUAL, shall be calculated as follows. The 
procedures in paragraph (g)(2)(iii) of this section shall be used to 
determine the organic HAP emissions for each individual continuous 
process vent, except that paragraph (g)(2)(iii)(B)(2) of this section 
shall not apply and the sampling site shall be after those recovery 
devices installed as part of normal operation; before any add-on control 
devices (i.e., those required by regulation); and prior to discharge to 
the atmosphere. Then, individual continuous process vent emissions shall 
be summed to determine ECPVSjACTUAL.
    (ii)(A) ECPVSjstd shall be calculated using Equation 31 of this 
subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.030

where:

ECPVSjstd=Emissions if the applicable standard had been 
applied to the uncontrolled emissions, megagrams per month.
EFstd=0.000018 Mg organic HAP/Mg of product, if the 
collection of process sections within the affected source is subject to 
Sec. 63.1316(b)(1)(i).
    =0.00002 Mg organic HAP/Mg of product, if the collection of process 
sections within the affected source is subject to Sec. 63.1316 
(b)(1)(ii) or (b)(2)(ii).
    =0.00004 Mg organic HAP/Mg of product, if the collection of process 
sections within the affected source is subject to Sec. 63.1316(b)(2)(i).
    =0.0000036 Mg organic HAP/Mg of product, if the collection of 
process sections within the affected source is subject to 
Sec. 63.1316(c)(1).
PPj=Polymer produced, Mg/month, for the collection of process sections j 
within the affected source, as calculated according to paragraph 
(g)(3)(ii)(B) of this section.

    (B) The amount of polymer produced, Mg per month, for the collection 
of process sections j within the affected source shall be determined by 
determining the weight of polymer pulled from the process line(s) during 
a 30-day period. The polymer produced shall be determined by direct 
measurement or by an alternate methodology, such as materials balance. 
If an alternate methodology is used, a description of the methodology, 
including all procedures, data, and assumptions shall be submitted as 
part of the Emissions Averaging Plan required by Sec. 63.1335(e)(4).
    (C) Alternatively, ECPVSjstd for continuous process vents 
located in the collection of process sections within the affected source 
subject to Sec. 63.1316(c)(1) may be calculated using the procedures in 
paragraph (g)(2)(i) and (g)(2)(ii) of this section to determine the 
organic HAP emissions for each individual continuous process vent, 
except that the sampling site shall be after recovery devices installed 
as part of normal operation; before any add-on control devices (i.e., 
those required by regulation); and prior to discharge to the atmosphere. 
Then, individual continuous process vent emissions shall be summed and 
multiplied by 0.02 to determine ECPVSjstd.

[[Page 236]]

    (4) Emissions from storage vessels shall be calculated using the 
procedures specified in Sec. 63.150(g)(3).
    (5) Emissions from wastewater streams shall be calculated using the 
procedures in Sec. 63.150(g)(5).
    (6) Emissions from batch process vents shall be calculated as 
follows:
    (i) EBPViu for each batch process vent i shall be 
calculated using the procedures specified in Sec. 63.1323(b).
    (ii) The following procedures and equations shall be used to 
determine EBPViACTUAL:
    (A) If the batch process vent is not controlled by a control device 
or pollution prevention measure, 
EBPViACTUAL=EBPViu, where EBPViu is 
calculated using the procedures in Sec. 63.1323(b).
    (B) If the batch process vent is controlled using a control device 
or a pollution prevention measure achieving less than 90 percent 
reduction for the batch cycle, calculate EBPViACTUAL using 
Equation 32 of this subpart, where percent reduction is for the batch 
cycle.
[GRAPHIC] [TIFF OMITTED] TR12SE96.031

    (1) The percent reduction for the batch cycle shall be calculated 
according to the procedures in Sec. 63.1325(c)(2).
    (2) The percent reduction for control devices shall be calculated 
according to the procedures in Sec. 63.1325 (c)(2)(i) through 
(c)(2)(iii).
    (3) The percent reduction of pollution prevention measures shall be 
calculated using the procedures specified in paragraph (j) of this 
section.
    (7) Emissions from aggregate batch vent streams shall be calculated 
as follows:
    (i) For purposes of determining aggregate batch vent stream flow 
rate, organic HAP concentrations, and temperature, the sampling site 
shall be before any control device and before discharge to the 
atmosphere. Method 1 or 1A, 40 CFR part 60, appendix A, shall be used 
for selection of the sampling site.
    (ii) EABViu for each aggregate batch vent stream i shall 
be calculated using Equation 33 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.032

where:

EABViu=Uncontrolled aggregate batch vent stream emission rate 
          from aggregate batch vent stream i, megagrams per month.
Q=Vent stream flow rate, dry standard cubic meters per minute, measured 
          using Method 2, 2A, 2C, or 2D, 40 CFR part 60, appendix A, as 
          appropriate.
h=Monthly hours of operation during which positive flow is present from 
          the aggregate batch vent stream, hours per month.
Cj=Concentration, parts per million by volume, dry basis, of 
          organic HAP j as measured by Method 18, 40 CFR part 60, 
          appendix A.
Mj=Molecular weight of organic HAP j, gram per gram-mole.
n=Number of organic HAP in the stream.

    (A) The values of Q and Cj shall be determined during a performance 
test conducted under representative operating conditions. The values of 
Q and Cj shall be established in the Notification of Compliance Status 
and shall be updated as provided in paragraph (g)(7)(ii)(B) of this 
section.

[[Page 237]]

    (B) If there is a change in capacity utilization other than a change 
in monthly operating hours, or if any other change is made to the 
process or product recovery equipment or operation such that the 
previously measured values of Q and Cj are no longer 
representative, a new performance test shall be conducted to determine 
new representative values of Q and Cj. These new values shall 
be used to calculate debits and credits from the time of the change 
forward, and the new values shall be reported in the next Periodic 
Report.
    (iii) The following procedures and equations shall be used to 
calculate EABViACTUAL:
    (A) If the aggregate batch vent stream is not controlled by a 
control device or pollution prevention measure, EABViACTUAL = 
EABViu, where EABViu is calculated according to 
the procedures in paragraphs (g)(7)(i) and (g)(7)(ii) of this section.
    (B) If the aggregate batch vent stream is controlled using a control 
device or a pollution prevention measure achieving less than 90 percent 
reduction, calculate EABViACTUAL using Equation 34 of this 
subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.033

    (1) The percent reduction for control devices shall be determined 
according to the procedures in Sec. 63.1325(e).
    (2) The percent reduction for pollution prevention measures shall be 
calculated according to the procedures specified in paragraph (j) of 
this section.
    (h) Credits are generated by the difference between emissions that 
are allowed for each Group 1 and Group 2 emission point and the actual 
emissions from that Group 1 or Group 2 emission point that has been 
controlled after November 15, 1990 to a level more stringent than what 
is required by this subpart or any other State or Federal rule or 
statute. Said Group 1 and Group 2 emission points are identified in 
paragraphs (c)(1) through (c)(5) of this section. Credits shall be 
calculated using Equation 35 of this subpart.
    (1) Sourcewide credits shall be calculated using Equation 35 of this 
subpart. Credits and all terms of Equation 35 of this subpart are in 
units of megagrams per month, and the baseline date is November 15, 
1990:
[GRAPHIC] [TIFF OMITTED] TR09MR99.009

Where:
D = Discount factor = 0.9 for all credit generating emission points 
except those controlled by a pollution prevention measure;

[[Page 238]]

discount factor = 1.0 for each credit generating emission point 
controlled by a pollution prevention measure (i.e., no discount 
provided).
ECPV1iACTUAL = Emissions for each Group 1 continuous process 
vent i subject to Sec. 63.1315 that is controlled to a level more 
stringent than the reference control technology. ECPV1iACTUAL 
is calculated according to paragraph (h)(2) of this section.
(0.02)ECPV1iu = Emissions from each Group 1 continuous 
process vent i subject to Sec. 63.1315 if the applicable reference 
control technology had been applied to the uncontrolled emissions. 
ECPV1iu is calculated according to paragraph (h)(2) of this 
section.
ECPVS1jSTD = Emissions from Group 1 continuous process vents 
subject to Sec. 63.1316(b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or 
(c)(1) located in the collection of process sections j within the 
affected source if the applicable standard had been applied to the 
uncontrolled emissions. ECPVS1jSTD is calculated according to 
paragraph (h)(3) of this section.
ECPVS1jACTUAL = Emissions from Group 1 continuous process 
vents subject to Sec. 63.1316(b)(1)(i), (b)(1)(ii), (b)(2)(i), 
(b)(2)(ii), or (c)(1) located in the collection of process sections j 
within the affected source that are controlled to a level more stringent 
than the applicable standard. ECPVS1jACTUAL is calculated 
according to paragraph (h)(3) of this section.
ECPV2iACTUAL = Emissions from each Group 2 continuous process 
vent i subject to Sec. 63.1315 that is controlled. 
ECPV2iACTUAL is calculated according to paragraph (h)(2) of 
this section.
ECPV2iBASE = Emissions from each Group 2 continuous process 
vent i subject to Sec. 63.1315 at the baseline date. 
ECPV2iBASE is calculated according to paragraph (h)(2) of 
this section.
ECPVS2jBASE = Emissions from Group 2 continuous process vents 
subject to Sec. 63.1316(b)(1)(i) located in the collection of material 
recovery sections j within the affected source at the baseline date. 
ECPVS2jBASE is calculated according to paragraph (h)(3) of 
this section.
ECPVS2jACTUAL = Emissions from Group 2 continuous process 
vents subject to Sec. 63.1316(b)(1)(i) located in the collection of 
material recovery sections j within the affected source that are 
controlled. ECPVS2jACTUAL is calculated according to 
paragraph (h)(3) of this section.
ES1iACTUAL = Emissions from each Group 1 storage vessel i 
that is controlled to a level more stringent than the applicable 
reference control technology or standard. ES1iACTUAL is 
calculated according to paragraph (h)(4) of this section.
(BL)ES1iu = Emissions from each Group 1 storage vessel i if 
the applicable reference control technology or standard had been applied 
to the uncontrolled emissions. ES1iu is calculated according 
to paragraph (h)(4) of this section. For calculating these emissions, BL 
= 0.05 for each Group 1 storage vessel i subject to Sec. 63.1314(a); and 
BL = 0.02 for each storage vessel i subject to Sec. 63.1314(c).
ES2iACTUAL = Emissions from each Group 2 storage vessel i 
that is controlled. ES2iACTUAL is calculated according to 
paragraph (h)(4) of this section.
ES2iBASE = Emissions from each Group 2 storage vessel i at 
the baseline date. ES2iBASE is calculated according to 
paragraph (h)(4) of this section.
EWW1iACTUAL = Emissions from each Group 1 wastewater stream i 
that is controlled to a level more stringent than the reference control 
technology. EWW1iACTUAL is calculated according to paragraph 
(h)(5) of this section.
EWW1ic = Emissions from each Group 1 wastewater stream i if 
the reference control technology had been applied to the uncontrolled 
emissions. EWW1ic is calculated according to paragraph (h)(5) 
of this section.
EWW2iACTUAL = Emissions from each Group 2 wastewater stream i 
that is controlled. EWW2iACTUAL is calculated according to 
paragraph (h)(5) of this section.
EWW2iBASE = Emissions from each Group 2 wastewater stream i 
at the baseline date. EWW2iBASE is calculated according to 
paragraph (h)(5) of this section.
(0.10)EBPV1iu = Emissions from each Group 1 batch process 
vent i if the applicable standard had been applied to the uncontrolled 
emissions. EBPV1iu is calculated according to paragraph 
(h)(6) of this section.
EBPV1iACTUAL = Emissions from each Group 1 batch process vent 
i that is controlled to a level more stringent than the applicable 
standard. EBPV1iACTUAL is calculated according to paragraph 
(h)(6) of this section.
(0.10)EABV1iu = Emissions from each Group 1 aggregate batch 
vent stream i if the applicable standard had been applied to the 
uncontrolled emissions. EABV1iu is calculated according to 
paragraph (h)(7) of this section.
EABV1iACTUAL = Emissions from each Group 1 aggregate batch 
vent stream i that is controlled to a level more stringent than the 
applicable standard. EABV1iACTUAL is calculated according to 
paragraph (h)(7) of this section.
EBPV2iBASE = Emissions from each Group 2 batch process vent i 
at the baseline date. EBPV2iBASE is calculated according to 
paragraph (h)(6) of this section.
EBPV2iACTUAL = Emissions from each Group 2 batch process vent 
i that is controlled. EBPV2iACTUAL is calculated according to 
paragraph (h)(6) of this section.

[[Page 239]]

EABV2iBASE = Emissions from each Group 2 aggregate batch vent 
stream i at the baseline date. EABV2iBASE is calculated 
according to paragraph (h)(7) of this section.
EABV2iACTUAL = Emissions from each Group 2 aggregate batch 
vent stream i that is controlled. EABV2iACTUAL is calculated 
according to paragraph (h)(7) of this section.
n = Number of Group 1 emission points included in the emissions average. 
The value of n is not necessarily the same for continuous process vents, 
batch process vents, aggregate batch vent streams, storage vessels, 
wastewater streams, or the collection of process sections within the 
affected source.
m = Number of Group 2 emission points included in the emissions average. 
The value of m is not necessarily the same for continuous process vents, 
batch process vents, aggregate batch vent streams, storage vessels, 
wastewater streams, or the collection of process sections within the 
affected source.
    (i) Except as specified in paragraph (h)(1)(iv) of this section, for 
an emission point controlled using a reference control technology, the 
percent reduction for calculating credits shall be no greater than the 
nominal efficiency associated with the reference control technology, 
unless a higher nominal efficiency is assigned as specified in paragraph 
(h)(1)(ii) of this section.
    (ii) For an emission point controlled to a level more stringent than 
the reference control technology, the nominal efficiency for calculating 
credits shall be assigned as described in paragraph (i) of this section. 
A reference control technology may be approved for use in a different 
manner and assigned a higher nominal efficiency according to the 
procedures in paragraph (i) of this section.
    (iii) For an emission point controlled using a pollution prevention 
measure, the nominal efficiency for calculating credits shall be as 
determined as described in paragraph (j) of this section.
    (iv) For Group 1 and Group 2 batch process vents and Group 1 and 
Group 2 aggregate batch vent streams, the percent reduction for 
calculating credits shall be the percent reduction determined according 
to the procedures in paragraphs (h)(6)(ii) and (h)(6)(iii) of this 
section for batch process vents and paragraphs (h)(7)(ii) and 
(h)(7)(iii) of this section for aggregate batch vent streams.
    (2) Emissions from continuous process vents subject to Sec. 63.1315 
shall be determined as follows:
    (i) Uncontrolled emissions from Group 1 continuous process vents 
(ECPV1iu) shall be calculated according to the procedures and 
equation for ECPViu in paragraphs (g)(2)(i) and (g)(2)(ii) of 
this section.
    (ii) Actual emissions from Group 1 continuous process vents 
controlled using a technology with an approved nominal efficiency 
greater than 98 percent or a pollution prevention measure achieving 
greater than 98 percent emission reduction (ECPV1iACTUAL) 
shall be calculated using Equation 36 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.035

    (iii) The following procedures shall be used to calculate actual 
emissions from Group 2 continuous process vents 
(ECPV2iACTUAL):
    (A) For a Group 2 continuous process vent controlled by a control 
device, a recovery device applied as a pollution prevention project, or 
a pollution prevention measure, where the control achieves a percent 
reduction less than or equal to 98 percent reduction, use Equation 37 of 
this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.036


[[Page 240]]


    (1) ECPV2iu shall be calculated according to the 
equations and procedures for ECPViu in paragraphs (g)(2)(i) 
and (g)(2)(ii) of this section, except as provided in paragraph 
(h)(2)(iii)(A)(3) of this section.
    (2) The percent reduction shall be calculated according to the 
procedures in paragraphs (g)(2)(iii)(B)(1) through (g)(2)(iii)(B)(3) of 
this section, except as provided in paragraph (h)(2)(iii)(A)(4) of this 
section.
    (3) If a recovery device was added as part of a pollution prevention 
project, ECPV2iu shall be calculated prior to that recovery 
device. The equation for ECPViu in paragraph (g)(2)(ii) of 
this section shall be used to calculate ECPV2iu; however, the 
sampling site for measurement of vent stream flow rate and organic HAP 
concentration shall be at the inlet of the recovery device.
    (4) If a recovery device was added as part of a pollution prevention 
project, the percent reduction shall be demonstrated by conducting a 
performance test at the inlet and outlet of that recovery device.
    (B) For a Group 2 continuous process vent controlled using a 
technology with an approved nominal efficiency greater than 98 percent 
or a pollution prevention measure achieving greater than 98 percent 
reduction, use Equation 38 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.037

    (iv) Emissions from Group 2 continuous process vents at baseline 
shall be calculated as follows:
    (A) If the continuous process vent was uncontrolled on November 15, 
1990, ECPV2iBASE=ECPV2iu and shall be calculated 
according to the procedures and equation for ECPViu in 
paragraphs (g)(2)(i) and (g)(2)(ii) of this section.
    (B) If the continuous process vent was controlled on November 15, 
1990, use Equation 39 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.038

    (1) ECPV2iu is calculated according to the procedures and 
equation for ECPViu in paragraphs (g)(2)(i) and (g)(2)(ii) of 
this section.
    (2) The percent reduction shall be calculated according to the 
procedures specified in paragraphs (g)(2)(iii)(B)(1) through 
(g)(2)(iii)(B)(3) of this section.
    (C) If a recovery device was added as part of a pollution prevention 
project initiated after November 15, 1990, 
ECPV2iBASE=ECPV2iu, where ECPV2iu is 
calculated according to paragraph (h)(2)(iii)(A)(3) of this section.
    (3) Emissions from continuous process vents subject to 
Sec. 63.1316(b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or (c)(1) 
shall be determined as follows:
    (i) Emissions from Group 1 continuous process vents located in the 
collection of process sections j within the affected source if the 
applicable standard had been applied to the uncontrolled emissions 
(ECPVS1jstd) shall be calculated according to paragraph 
(g)(3)(ii) of this section.
    (ii) Actual emissions from Group 1 continuous process vents located 
in the collection of process sections j within the affected source 
controlled to a level more stringent than the applicable standard 
(ECPVS1jACTUAL) shall be calculated using the procedures in 
paragraphs (g)(3)(ii)(A) and (g)(3)(ii)(B) of this section, except that 
the actual emission level, Mg organic HAP/Mg of

[[Page 241]]

product, shall be used as EFstd in Equation 31 of this 
subpart. Further, ECPVS1jACTUAL for continuous process vents 
subject to Sec. 63.1316(c)(1) controlled in accordance with 
Sec. 63.1316(c)(1)(iii) shall be calculated using the procedures in 
paragraph (h)(2)(ii) of this section for individual continuous process 
vents and then summing said emissions to get ECPVS1jACTUAL, 
except that the sampling site shall be after recovery devices installed 
as part of normal operation; before any add-on control devices (i.e., 
those required by regulation); and prior to discharge to the atmosphere.
    (iii) Actual emissions from Group 2 continuous process vents subject 
to Sec. 63.1316(b)(1)(i) located in the collection of material recovery 
sections j within the affected source (ECPVS2jACTUAL) shall 
be calculated using the procedures in paragraphs (g)(3)(ii)(A) and 
(g)(3)(ii)(B) of this section, except that the actual emission level, Mg 
organic HAP/Mg of product, shall be used as EFstd in Equation 
31 of this subpart.
    (iv) Emissions from Group 2 continuous process vents subject to 
Sec. 63.1316(b)(1)(i) located in the collection of material recovery 
sections j within the affected source at baseline 
(ECPVS2jBASE) shall be calculated using the procedures in 
paragraphs (g)(3)(ii)(A) and (g)(3)(ii)(B) of this section, except that 
the actual emission level, Mg organic HAP/Mg of product, at baseline 
shall be used as EFstd in Equation 31 of this subpart.
    (4)(i) Emissions from storage vessels shall be calculated using the 
procedures specified in Sec. 63.150(h)(3).
    (ii) Actual emissions from Group 1 storage vessels at an existing 
affected source producing ASA/AMSAN subject to Sec. 63.1314(c) using a 
technology with an approved nominal efficiency greater than 98 percent 
or a pollution prevention measure achieving greater than 98 percent 
emission reduction shall be calculated using the procedures specified in 
Sec. 63.150(h)(3)(ii).
    (5) Emissions from wastewater streams shall be calculated using the 
procedures specified in Sec. 63.150(h)(5).
    (6) Emissions from batch process vents shall be determined as 
follows:
    (i) Uncontrolled emissions from Group 1 batch process vents 
(EBPV1iu) shall be calculated using the procedures 
Sec. 63.1323(b).
    (ii) Actual emissions from Group 1 batch process vents controlled to 
a level more stringent than the standard (EBPV1iACTUAL) shall 
be calculated using Equation 40 of this subpart, where percent reduction 
is for the batch cycle:
[GRAPHIC] [TIFF OMITTED] TR09MR99.010

    (A) The percent reduction for the batch cycle shall be calculated 
according to the procedures in Sec. 63.1325(c)(2).
    (B) The percent reduction for control devices shall be determined 
according to the procedures in Sec. 63.1325(c)(2)(i) through 
(c)(2)(iii).
    (C) The percent reduction of pollution prevention measures shall be 
calculated using the procedures specified in paragraph (j) of this 
section.
    (iii) Actual emissions from Group 2 batch process vents 
(EBPV2iACTUAL) shall be calculated using Equation 41 of this 
subpart and the procedures in paragraphs (h)(6)(ii)(A) through 
(h)(6)(ii)(C) of this section. EBPV2iu shall be calculated 
using the procedures specified in Sec. 63.1323(b).
[GRAPHIC] [TIFF OMITTED] TR12SE96.040


[[Page 242]]


    (iv) Emissions from Group 2 batch process vents at baseline 
(EBPV2iBASE) shall be calculated as follows:
    (A) If the batch process vent was uncontrolled on November 15, 1990, 
EBPV2iBASE=EBPV2iu and shall be calculated using 
the procedures specified in Sec. 63.1323(b).
    (B) If the batch process vent was controlled on November 15, 1990, 
use Equation 42 of this subpart and the procedures in paragraphs 
(h)(6)(ii)(A) through (h)(6)(ii)(C) of this section. EBPV2iu 
shall be calculated using the procedures specified in Sec. 63.1323(b).
[GRAPHIC] [TIFF OMITTED] TR12SE96.041

    (7) Emissions from aggregate batch vent streams shall be determined 
as follows:
    (i) Uncontrolled emissions from Group 1 aggregate batch vent streams 
(EABV1iu) shall be calculated according to the procedures and 
equation for EABViu in paragraphs (g)(7)(i) and (g)(7)(ii) of 
this section.
    (ii) Actual emissions from Group 1 aggregate batch vent streams 
controlled to a level more stringent than the standard 
(EABV1iACTUAL) shall be calculated using Equation 43 of this 
subpart:
[GRAPHIC] [TIFF OMITTED] TR12SE96.042

    (A) The percent reduction for control devices shall be determined 
according to the procedures in Sec. 63.1325(e).
    (B) The percent reduction of pollution prevention measures shall be 
calculated using the procedures specified in paragraph (j) of this 
section.
    (iii) Actual emissions from Group 2 aggregate batch vent streams 
(EABV2iACTUAL) shall be calculated using Equation 44 of this 
subpart and the procedures in paragraphs (h)(7)(ii)(A) through 
(h)(7)(ii)(B) of this section. EABV2iu shall be calculated 
according to the equations and procedures for EABViu in 
paragraphs (g)(7)(i) and (g)(7)(ii) of this section.
[GRAPHIC] [TIFF OMITTED] TR12SE96.043

    (iv) Emissions from Group 2 aggregate batch vent streams at baseline 
shall be calculated as follows:
    (A) If the aggregate batch vent stream was uncontrolled on November 
15, 1990, EABV2iBASE=EABV2iu and shall be 
calculated according to the procedures and equation for 
EABViu in paragraphs (g)(7)(i) and (g)(7)(ii) of this 
section.
    (B) If the aggregate batch vent stream was controlled on November 
15, 1990, use Equation 45 of this subpart and the procedures in 
paragraphs (h)(7)(ii)(A) through (h)(7)(ii)(B) of this section. 
EABV2iu shall be calculated according to the equations and 
procedures for EABViu in paragraphs (g)(7)(i) and (g)(7)(ii) 
of this section.

[[Page 243]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.044

    (i) The following procedures shall be followed to establish nominal 
efficiencies for emission controls for storage vessels, continuous 
process vents, and process wastewater streams. The procedures in 
paragraphs (i)(1) through (i)(6) of this section shall be followed for 
control technologies that are different in use or design from the 
reference control technologies and achieve greater percent reductions 
than the percent efficiencies assigned to the reference control 
technologies in Sec. 63.111.
    (1) In those cases where the owner or operator is seeking permission 
to take credit for use of a control technology that is different in use 
or design from the reference control technology, and the different 
control technology will be used in more than three applications at a 
single plant-site, the owner or operator shall submit the information 
specified in paragraphs (i)(1)(i) through (i)(1)(iv) of this section, as 
specified in Sec. 63.1335(e)(7)(ii), to the Director of the EPA Office 
of Air Quality Planning and Standards in writing:
    (i) Emission stream characteristics of each emission point to which 
the control technology is or will be applied including the kind of 
emission point, flow, organic HAP concentration, and all other stream 
characteristics necessary to design the control technology or determine 
its performance.
    (ii) Description of the control technology including design 
specifications.
    (iii) Documentation demonstrating to the Administrator's 
satisfaction the control efficiency of the control technology. This may 
include performance test data collected using an appropriate EPA Method 
or any other method validated according to Method 301, 40 CFR part 63, 
appendix A, of this part. If it is infeasible to obtain test data, 
documentation may include a design evaluation and calculations. The 
engineering basis of the calculation procedures and all inputs and 
assumptions made in the calculations shall be documented.
    (iv) A description of the parameter or parameters to be monitored to 
ensure that the control technology will be operated in conformance with 
its design and an explanation of the criteria used for selection of that 
parameter (or parameters).
    (2) The Administrator shall determine within 120 days whether an 
application presents sufficient information to determine nominal 
efficiency. The Administrator reserves the right to request specific 
data in addition to the items listed in paragraph (i)(1) of this 
section.
    (3) The Administrator shall determine within 120 days of the 
submittal of sufficient data whether a control technology shall have a 
nominal efficiency and the level of that nominal efficiency. If, in the 
Administrator's judgment, the control technology achieves a level of 
emission reduction greater than the reference control technology for a 
particular kind of emission point, the Administrator will publish a 
Federal Register notice establishing a nominal efficiency for the 
control technology.
    (4) The Administrator may grant permission to take emission credits 
for use of the control technology. The Administrator may also impose 
requirements that may be necessary to ensure operation and maintenance 
to achieve the specified nominal efficiency.
    (5) In those cases where the owner or operator is seeking permission 
to take credit for use of a control technology that is different in use 
or design from the reference control technology and the different 
control technology will be used in no more than three applications at a 
single plant site, the owner or operator shall submit the information 
listed in paragraphs (i)(1)(i) through (i)(1)(iv) of this section, as 
specified in Sec. 63.1335(e)(7)(ii), to the Administrator.
    (i) In these instances, use and conditions for use of the control 
technology may be approved by the permitting authority as part of an 
operating permit

[[Page 244]]

application or modification. The permitting authority shall follow the 
procedures specified in paragraphs (i)(2) through (i)(4) of this section 
except that, in these instances, a Federal Register notice is not 
required to establish the nominal efficiency for the different 
technology.
    (ii) If, in reviewing the application, the permitting authority 
believes the control technology has broad applicability for use by other 
affected sources, the permitting authority shall submit the information 
provided in the application to the Director of the EPA Office of Air 
Quality Planning and Standards. The Administrator shall review the 
technology for broad applicability and may publish a Federal Register 
notice; however, this review shall not affect the permitting authority's 
approval of the nominal efficiency of the control technology for the 
specific application.
    (6) If, in reviewing an application for a control technology for an 
emission point, the Administrator or permitting authority determines the 
control technology is not different in use or design from the reference 
control technology, the Administrator or permitting authority shall deny 
the application.
    (j) The following procedures shall be used for calculating the 
efficiency (percent reduction) of pollution prevention measures for 
storage vessels, continuous process vents, batch process vents, 
aggregate batch vent streams, and wastewater streams:
    (1) A pollution prevention measure is any practice that meets the 
criteria of paragraphs (j)(1)(i) and (j)(1)(ii) of this section.
    (i) A pollution prevention measure is any practice that results in a 
lesser quantity of organic HAP emissions per unit of product released to 
the atmosphere prior to out-of-process recycling, treatment, or control 
of emissions, while the same product is produced.
    (ii) Pollution prevention measures may include: substitution of 
feedstocks that reduce organic HAP emissions; alterations to the 
production process to reduce the volume of materials released to the 
environment; equipment modifications; housekeeping measures; and in-
process recycling that returns waste materials directly to production as 
raw materials. Production cutbacks do not qualify as pollution 
prevention.
    (2) The emission reduction efficiency of pollution prevention 
measures implemented after November 15, 1990, may be used in calculating 
the actual emissions from an emission point in the debit and credit 
equations in paragraphs (g) and (h) of this section.
    (i) For pollution prevention measures, the percent reduction used in 
the equations in paragraphs (g)(2) through (g)(7) of this section and 
paragraphs (h)(2) through (h)(7) of this section is the percent 
difference between the monthly organic HAP emissions for each emission 
point after the pollution prevention measure for the most recent month 
versus monthly emissions from the same emission point before the 
pollution prevention measure, adjusted by the volume of product produced 
during the two monthly periods.
    (ii) Equation 46 of this subpart shall be used to calculate the 
percent reduction of a pollution prevention measure for each emission 
point.
[GRAPHIC] [TIFF OMITTED] TR12SE96.045

where:

Percent reduction=Efficiency of pollution prevention measure (percent 
organic HAP reduction).
EB=Monthly emissions before the pollution prevention measure, 
megagrams per month, determined as specified in paragraphs

[[Page 245]]

(j)(2)(ii)(A), (j)(2)(ii)(B), and (j)(2)(ii)(C) of this section.
Epp=Monthly emissions after the pollution prevention measure, 
megagrams per month, as determined for the most recent month, determined 
as specified in either paragraphs (j)(2)(ii)(D) or (j)(2)(ii)(E) of this 
section.
PB=Monthly production before the pollution prevention 
measure, megagrams per month, during the same period over which 
EB is calculated.
Ppp=Monthly production after the pollution prevention 
measure, megagrams per month, as determined for the most recent month.

    (A) The monthly emissions before the pollution prevention measure, 
EB, shall be determined in a manner consistent with the 
equations and procedures in paragraphs (g)(2) and (g)(3) of this section 
for continuous process vents, paragraph (g)(4) of this section for 
storage vessels, paragraph (g)(6) of this section for batch process 
vents, and paragraph (g)(7) of this section for aggregate batch vent 
streams.
    (B) For wastewater, EB shall be calculated using Equation 
47 of this subpart:
[GRAPHIC] [TIFF OMITTED] TR09MR99.011


Where:
n = Number of wastewater streams.
QBi = Annual average flow rate for wastewater stream i before 
the pollution prevention measure, defined and determined according to 
Sec. 63.144(c)(3), liters per minute, before implementation of the 
pollution prevention measure.
HBi = Number of hours per month that wastewater stream i was 
discharged before the pollution prevention measure, hours per month.
s = Total number of organic HAP in wastewater stream i.
Fem = Fraction emitted of organic HAP m in wastewater from 
Table 34 of subpart G of this part, dimensionless.
HAPBim = Annual average concentration of organic HAP m in 
wastewater stream i, defined and determined according to paragraph 
Sec. 63.150(g)(5)(i) of this section, before the pollution prevention 
measure, parts per million by weight, as measured before the 
implementation of the pollution measure.

    (C) If the pollution prevention measure was implemented prior to 
September 12, 1996 records may be used to determine EB.
    (D) The monthly emissions after the pollution prevention measure, 
Epp, may be determined during a performance test or by a 
design evaluation and documented engineering calculations. Once an 
emissions-to-production ratio has been established, the ratio can be 
used to estimate monthly emissions from monthly production records.
    (E) For wastewater, Epp shall be calculated using 
Equation 48 of this subpart and n, Qppi, Hppi, s, 
Fem, and HAPppim are defined and determined as 
described in paragraph (j)(2)(ii)(B) of this section, except that 
Qppi, Hppi, and HAPppim shall be 
determined after the pollution prevention measure has been implemented.
[GRAPHIC] [TIFF OMITTED] TR12SE96.047

    (iii) All equations, calculations, test procedures, test results, 
and other information used to determine the percent reduction achieved 
by a pollution prevention measure for each emission point shall be fully 
documented.

[[Page 246]]

    (iv) The same pollution prevention measure may reduce emissions from 
multiple emission points. In such cases, the percent reduction in 
emissions for each emission point shall be calculated.
    (v) For the purposes of the equations in paragraphs (h)(2) through 
(h)(7) of this section used to calculate credits for emission points 
controlled more stringently than the reference control technology or 
standard, the nominal efficiency of a pollution prevention measure is 
equivalent to the percent reduction of the pollution prevention measure. 
When a pollution prevention measure is used, the owner or operator of an 
affected source is not required to apply to the Administrator for a 
nominal efficiency and is not subject to paragraph (i) of this section.
    (k) The owner or operator shall demonstrate that the emissions from 
the emission points proposed to be included in the emissions average 
will not result in greater hazard or, at the option of the 
Administrator, greater risk to human health or the environment than if 
the emission points were controlled according to the provisions in 
Secs. 63.1314, 63.1315, 63.1316 through 63.1320, 63.1321, and 63.1330.
    (1) This demonstration of hazard or risk equivalency shall be made 
to the satisfaction of the Administrator.
    (i) The Administrator may require owners and operators to use 
specific methodologies and procedures for making a hazard or risk 
determination.
    (ii) The demonstration and approval of hazard or risk equivalency 
shall be made according to any guidance that the Administrator makes 
available for use.
    (2) Owners and operators shall provide documentation demonstrating 
the hazard or risk equivalency of their proposed emissions average in 
their operating permit application or in their Emissions Averaging Plan 
if an operating permit application has not yet been submitted.
    (3) An Emissions Averaging Plan that does not demonstrate hazard or 
risk equivalency to the satisfaction of the Administrator shall not be 
approved. The Administrator may require such adjustments to the 
Emissions Averaging Plan as are necessary in order to ensure that the 
emissions average will not result in greater hazard or risk to human 
health or the environment than would result if the emission points were 
controlled according to Secs. 63.1314, 63.1315, 63.1316 through 63.1320, 
63.1321, and 63.1330.
    (4) A hazard or risk equivalency demonstration shall:
    (i) Be a quantitative, bona fide chemical hazard or risk assessment;
    (ii) Account for differences in chemical hazard or risk to human 
health or the environment; and
    (iii) Meet any requirements set by the Administrator for such 
demonstrations.
    (l) For periods of parameter monitoring excursions, an owner or 
operator may request that the provisions of paragraphs (l)(1) through 
(l)(4) of this section be followed instead of the procedures in 
paragraphs (f)(2)(i) and (f)(2)(ii) of this section.
    (1) The owner or operator shall notify the Administrator of 
monitoring excursions in the Periodic Reports as required in 
Sec. 63.1335(e)(6).
    (2) The owner or operator shall demonstrate that other types of 
monitoring data or engineering calculations are appropriate to establish 
that the control device for the emission point was operating in such a 
fashion to warrant assigning full or partial credits and debits. This 
demonstration shall be made to the Administrator's satisfaction, and the 
Administrator may establish procedures of demonstrating compliance that 
are acceptable.
    (3) The owner or operator shall provide documentation of the 
excursion and the other type of monitoring data or engineering 
calculations to be used to demonstrate that the control device for the 
emission point was operating in such a fashion to warrant assigning full 
or partial credits and debits.
    (4) The Administrator may assign full or partial credit and debits 
upon review of the information provided.
    (m) For each emission point included in an emissions average, the 
owner or operator shall perform testing, monitoring, recordkeeping, and 
reporting equivalent to that required for Group 1 emission points 
complying with Secs. 63.1314, 63.1315, 63.1316 through 63.1320, 63.1321, 
and 63.1330, as applicable. The

[[Page 247]]

specific requirements for continuous process vents, batch process vents, 
aggregate batch vent streams, storage vessels, and wastewater operations 
that are included in an emissions average for an affected source are 
identified in paragraphs (m)(1) through (m)(7) of this section.
    (1) For each continuous process vent subject to Sec. 63.1315 
equipped with a flare, incinerator, boiler, or process heater, as 
appropriate to the control technique:
    (i) Determine whether the continuous process vent is Group 1 or 
Group 2 according to the procedures specified in Sec. 63.1315;
    (ii) Conduct initial performance tests to determine percent 
reduction according to the procedures specified in Sec. 63.1315; and
    (iii) Monitor the operating parameters, keep records, and submit 
reports according to the procedures specified in Sec. 63.1315.
    (2) For each continuous process vent subject to Sec. 63.1315 
equipped with a carbon adsorber, absorber, or condenser but not equipped 
with a control device, as appropriate to the control technique:
    (i) Determine the flow rate, organic HAP concentration, and TRE 
index value according to the procedures specified in Sec. 63.1315; and
    (ii) Monitor the operating parameters, keep records, and submit 
reports according to the procedures specified in Sec. 63.1315.
    (3) For continuous process vents subject to Sec. 63.1316(b)(1)(i), 
(b)(1)(ii), (b)(2)(i), (b)(2)(ii), or (c)(1):
    (i) Determine whether the emissions from the continuous process 
vents subject to Sec. 63.1316(b)(1)(i) located in the collection of 
material recovery sections within the affected source are greater than, 
equal to, or less than 0.12 kg organic HAP per Mg of product according 
to the procedures specified in Sec. 63.1318(b);
    (ii) Determine the emission rate, ERHAP, for each 
collection of process sections within the affected source according to 
the procedures specified in Sec. 63.1318(b); and
    (iii) [Reserved]
    (iv) Monitor the operating parameters, keep records, and submit 
reports according to the procedures specified in Sec. 63.1317, 
Sec. 63.1319, Sec. 63.1320.
    (4) For each storage vessel controlled with an internal floating 
roof, external roof, or a closed vent system with a control device, as 
appropriate to the control technique:
    (i) Perform the monitoring or inspection procedures according to the 
procedures specified in Sec. 63.1314;
    (ii) Perform the reporting and recordkeeping procedures according to 
the procedures specified in Sec. 63.1314; and
    (iii) For closed vent systems with control devices, conduct an 
initial design evaluation and submit an operating plan according to the 
procedures specified in Sec. 63.1314.
    (5) For wastewater emission points, as appropriate to the control 
technique:
    (i) For wastewater treatment processes, conduct tests according to 
the procedures specified in Sec. 63.1330;
    (ii) Conduct inspections and monitoring according to the procedures 
specified in Sec. 63.1330;
    (iii) Implement a recordkeeping program according to the procedures 
specified in Sec. 63.1330; and
    (iv) Implement a reporting program according to the procedures 
specified in Sec. 63.1330.
    (6) For each batch process vent and aggregate batch vent stream 
equipped with a control device, as appropriate to the control technique:
    (i) Determine whether the batch process vent or aggregate batch vent 
stream is Group 1 or Group 2 according to the procedures in 
Sec. 63.1323;
    (ii) Conduct performance tests according to the procedures specified 
in Sec. 63.1325;
    (iii) Conduct monitoring according to the procedures specified in 
Sec. 63.1324; and
    (iv) Perform the recordkeeping and reporting procedures according to 
the procedures specified in Secs. 63.1326 and 63.1327.
    (7) If an emission point in an emissions average is controlled using 
a pollution prevention measure or a device or technique for which no 
monitoring parameters or inspection procedures are required by 
Secs. 63.1314, 63.1315, 63.1316 through 63.1320, 63.1321, or 63.1330, 
the

[[Page 248]]

owner or operator shall submit the information specified in 
Sec. 63.1335(f) for alternate monitoring parameters or inspection 
procedures in the Emissions Averaging Plan or operating permit 
application.
    (n) Records of all information required to calculate emission debits 
and credits shall be retained for 5 years.
    (o) Precompliance Reports, Emission Averaging Plans, Notifications 
of Compliance Status, Periodic Reports, and other reports shall be 
submitted as required by Sec. 63.1335.

[61 FR 48229, Sept. 12, 1996, as amended at 64 FR 11549, Mar. 9, 1999]



Sec. 63.1333  Additional test methods and procedures.

    (a) Performance testing shall be conducted in accordance with 
Sec. 63.7(a)(3), (d), (e), (g), and (h), with the exceptions specified 
in paragraphs (a)(1) through (a)(4) of this section and the additions 
specified in paragraphs (b) through (d) of this section. Sections 
63.1314 through 63.1330 also contain specific testing requirements.
    (1) Performance tests shall be conducted according to the provisions 
of Sec. 63.7(e), except that performance tests shall be conducted at 
maximum representative operating conditions for the process.
    (2) References in Sec. 63.7(g) to the Notification of Compliance 
Status requirements in Sec. 63.7(h) shall refer to the requirements in 
Sec. 63.1335(e)(5).
    (3) Because the site-specific test plans in Sec. 63.7(c)(3) are not 
required, Sec. 63.7(h)(4)(ii) is not applicable.
    (4) The owner or operator shall notify the Administrator of the 
intention to conduct a performance test at least 30 calendar days before 
the performance test is scheduled to allow the Administrator the 
opportunity to have an observer present during the test.
    (b) Each owner or operator of an existing affected source producing 
MBS complying with Sec. 63.1315(b)(2) shall determine compliance with 
the mass emission per mass product standard by using Equation 49 of this 
subpart.
[GRAPHIC] [TIFF OMITTED] TR12SE96.048

where:
ERMBS=Emission rate of organic HAP or TOC from continuous 
process vents, kg/Mg product.
Ei=Emission rate of organic HAP or TOC from continuous 
process vent i as calculated using the procedures specified in 
Sec. 63.116(c)(4), kg/month.
PPM=Amount of polymer produced in one month as determined by 
the procedures specified in Sec. 63.1318(b)(1)(ii), Mg/month.
n=Number of continuous process vents.

When determining Ei, when the provisions of Sec. 63.116(c)(4) 
specify that Method 18, 40 CFR part 60, appendix A, shall be used, 
Method 18 or Method 25A, 40 CFR part 60, appendix A, may be used for the 
purposes of this subpart. The use of Method 25A, 40 CFR part 60, 
appendix A, shall comply with paragraphs (b)(1) and (b)(2) of this 
section.
    (1) The organic HAP used as the calibration gas for Method 25A, 40 
CFR part 60, appendix A, shall be the single organic HAP representing 
the largest percent by volume.
    (2) The use of Method 25A, 40 CFR part 60, appendix A, is acceptable 
if the response from the high-level calibration gas is at least 20 times 
the standard deviation of the response from the zero calibration gas 
when the instrument is zeroed on the most sensitive scale.
    (c) The owner or operator of an affected source, complying with 
Sec. 63.1322(a)(3) shall determine compliance with the percent reduction 
requirement using Equation 50 of this subpart.

[[Page 249]]

[GRAPHIC] [TIFF OMITTED] TR12SE96.049

where:

PR=Percent reduction
Hj=Number of operating hours in a year for control device j.
Ei=Mass rate of TOC or total organic HAP at the inlet of 
control device j, calculated as specified in Sec. 63.1325(f), kg/hr. 
This value includes all continuous process vents, batch process vents, 
and aggregate batch vent streams routed to control device j.
Eo=Mass rate of TOC or total organic HAP at the outlet of 
control device j, calculated as specified in Sec. 63.1325(f), kg/hr.
Hk=Number of hours of operation during which positive flow is 
present in uncontrolled continuous process vent or aggregate batch vent 
stream k, hr/yr.
Eku=Mass rate of TOC or total organic HAP of uncontrolled 
continuous process vent or aggregate batch vent stream k, calculated as 
specified in Sec. 63.1325(f)(4), kg/hr.
AEunc=Mass rate of TOC or total organic HAP of uncontrolled 
batch process vent l, calculated as specified in Sec. 63.1325(f)(4), kg/
yr.
n=Number of control devices, uncontrolled continuous process vents and 
aggregate batch vent streams, and uncontrolled batch process vents. The 
value of n is not necessarily the same for these three items.

    (d) Data shall be reduced in accordance with the EPA approved 
methods specified in the applicable subpart or, if other test methods 
are used, the data and methods shall be validated according to the 
protocol in Method 301 of appendix A of this part.



Sec. 63.1334  Parameter monitoring levels and excursions.

    (a) Establishment of parameter monitoring levels. The owner or 
operator of a control or recovery device that has one or more parameter 
monitoring level requirements specified under this subpart shall 
establish a maximum or minimum level for each measured parameter using 
the procedures specified in paragraph (b), (c), or (d) of this section. 
The procedures specified in paragraph (b) of this section have been 
approved by the Administrator. The procedures in paragraphs (c) and (d) 
of this section have not been approved by the Administrator and 
determination of the parameter monitoring level using the procedures in 
paragraph (c) or (d) of this section is subject to review and approval 
by the Administrator. Said determination and supporting documentation 
shall be included in the Precompliance Report, specified in 
Sec. 63.1335(e)(3).
    (1) The owner or operator shall operate control and recovery devices 
such that monitored parameters remain above the minimum established 
level or below the maximum established level.
    (2) As specified in Sec. 63.1335(e)(5) and Sec. 63.1335(e)(8), all 
established levels, along with their supporting documentation and the 
definition of an operating day, shall be approved as part of and 
incorporated into the Notification of Compliance Status or operating 
permit, respectively.
    (3) Nothing in this section shall be construed to allow a monitoring 
parameter excursion caused by an activity that violates other applicable 
provisions of subpart A, F, or G of this part.

[[Page 250]]

    (b) Establishment of parameter monitoring levels based on 
performance tests. The procedures specified in paragraphs (b)(1) through 
(b)(3) of this section shall be used, as applicable, in establishing 
parameter monitoring levels. Level(s) established under this paragraph 
(b) shall be based on the parameter values measured during the 
performance test.
    (1) Storage tanks and wastewater. The maximum and/or minimum 
monitoring levels shall be based on the parameter values measured during 
the performance test, supplemented, if desired, by engineering 
assessments and/or manufacturer's recommendations.
    (2) Continuous process vents. During initial compliance testing, the 
appropriate parameter shall be continuously monitored during the 
required 1-hour runs. The monitoring level(s) shall then be established 
as the average of the maximum (or minimum) point values from the three 
test runs. The average of the maximum values shall be used when 
establishing a maximum level, and the average of the minimum values 
shall be used when establishing a minimum level.
    (3) Batch process vents. The monitoring level(s) shall be 
established using the procedures specified in paragraphs (b)(3)(i) 
through (b)(3)(ii) of this section, as appropriate. The procedures 
specified in this paragraph (b)(3) may only be used if the batch 
emission episodes, or portions thereof, selected to be controlled were 
tested, and monitoring data were collected, during the entire period in 
which emissions were vented to the control device, as specified in 
Sec. 63.1325(c)(1)(i). If the owner or operator chose to test only a 
portion of the batch emission episode, or portion thereof, selected to 
be controlled, as specified in Sec. 63.1325(c)(1)(i)(A), the procedures 
in paragraph (c) of this section must be used.
    (i) If more than one batch emission episode or more than one portion 
of a batch emission episode has been selected to be controlled, a single 
level for the batch cycle shall be calculated as follows:
    (A) During initial compliance testing, the appropriate parameter 
shall be monitored continuously at all times when batch emission 
episodes, or portions thereof, selected to be controlled are vented to 
the control device.
    (B) The average monitored parameter value shall be calculated for 
each batch emission episode, or portion thereof, in the batch cycle 
selected to be controlled. The average shall be based on all values 
measured during the required performance test.
    (C) If the level to be established is a maximum operating parameter, 
the level shall be defined as the minimum of the average parameter 
values of the batch emission episodes, or portions thereof, in the batch 
cycle selected to be controlled.
    (D) If the level to be established is a minimum operating parameter, 
the level shall be defined as the maximum of the average parameter 
values of the batch emission episodes, or portions thereof, in the batch 
cycle selected to be controlled.
    (E) Alternatively, an average monitored parameter value shall be 
calculated for the entire batch cycle based on all values measured 
during each batch emission episode, or portion thereof, selected to be 
controlled.
    (ii) Instead of establishing a single level for the batch cycle, as 
described in paragraph (b)(3)(i) of this section, an owner or operator 
may establish separate levels for each batch emission episode, or 
portion thereof, selected to be controlled. Each level shall be 
determined as specified in paragraphs (b)(3)(i)(A) and (b)(3)(i)(B) of 
this section.
    (iii) The batch cycle shall be defined in the Notification of 
Compliance Status, as specified in Sec. 63.1335(e)(5). Said definition 
shall include an identification of each batch emission episode and the 
information required to determine parameter monitoring compliance for 
partial batch cycles (i.e., when part of a batch cycle is accomplished 
during two different operating days).
    (4) Aggregate batch vent streams. For aggregate batch vent streams, 
the monitoring level shall be established in accordance with paragraph 
(b)(2) of this section.
    (c) Establishment of parameter monitoring levels based on 
performance tests, engineering assessments, and/or manufacturer's 
recommendations. As required in

[[Page 251]]

paragraph (a) of this section, the information specified in paragraphs 
(c)(2) and (c)(3) of this section shall be provided in the Precompliance 
Report.
    (1) Parameter monitoring levels established under this paragraph (c) 
shall be based on the parameter values measured during the performance 
test supplemented by engineering assessments and manufacturer's 
recommendations. Performance testing is not required to be conducted 
over the entire range of expected parameter values.
    (2) The specific level of the monitored parameter(s) for each 
emission point.
    (3) The rationale for the specific level for each parameter for each 
emission point, including any data and calculations used to develop the 
level and a description of why the level indicates proper operation of 
the control or recovery device.
    (d) Establishment of parameter monitoring based on engineering 
assessments and/or manufacturer's recommendations. If a performance test 
is not required by this subpart for a control or recovery device, the 
maximum or minimum level may be based solely on engineering assessments 
and/or manufacturer's recommendations. As required in paragraph (a) of 
this section, the determined level and all supporting documentation 
shall be provided in the Precompliance Report.
    (e) Compliance determinations. The provisions of this paragraph (e) 
apply only to emission points and control or recovery devices for which 
continuous monitoring is required under this subpart.
    (1) The parameter monitoring data for storage vessels, process 
vents, process wastewater streams, and emission points included in 
emissions averages that are required to perform continuous monitoring 
shall be used to determine compliance for the monitored control or 
recovery devices.
    (2) Except as provided in paragraphs (e)(3) and (g) of this section, 
for each excursion, as defined in paragraph (f) of this section, the 
owner or operator shall be deemed out of compliance with the provisions 
of this subpart.
    (3) If the daily average value of a monitored parameter is above the 
maximum level or below the minimum level established, or if monitoring 
data cannot be collected during monitoring device calibration check or 
monitoring device malfunction, but the affected source is operated 
during the periods of start-up, shutdown, or malfunction in accordance 
with the affected source's Start-up, Shutdown, and Malfunction Plan, 
then the event shall not be considered a monitoring parameter excursion.
    (f) Parameter monitoring excursion definitions. (1) For storage 
vessels, continuous process vents, aggregate batch vent streams, and 
wastewater streams, an excursion means any of the three cases listed in 
paragraphs (f)(1)(i) through (f)(1)(iii) of this section. For a control 
or recovery device where multiple parameters are monitored, if one or 
more of the parameters meets the excursion criteria in paragraphs 
(f)(1)(i) through (f)(1)(iii) of this section, this is considered a 
single excursion for the control or recovery device.
    (i) When the daily average value of one or more monitored parameters 
is above the maximum level or below the minimum level established for 
the given parameters.
    (ii) When the period of control or recovery device operation is 4 
hours or greater in an operating day and monitoring data are 
insufficient, as defined in paragraph (f)(1)(iv) of this section, to 
constitute a valid hour of data for at least 75 percent of the operating 
hours.
    (iii) When the period of control or recovery device operation is 
less than 4 hours in an operating day and more than two of the hours 
during the period of operation do not constitute a valid hour of data 
due to insufficient monitoring data, as defined in paragraph (f)(1)(iv) 
of this section.
    (iv) Monitoring data are insufficient to constitute a valid hour of 
data, as used in paragraphs (f)(1)(ii) and (f)(1)(iii) of this section, 
if measured values are unavailable for any of the 15-minute periods 
within the hour. For data compression systems approved under 
Sec. 63.1335(g)(3), monitoring data are insufficient to calculate a 
valid hour of data if there are less than four data measurements made 
during the hour.
    (2) For batch process vents, an excursion means one of the two cases 
listed

[[Page 252]]

in paragraphs (f)(2)(i) and (f)(2)(ii) of this section. For a control 
device where multiple parameters are monitored, if one or more of the 
parameters meets the excursion criteria in either paragraph (f)(2)(i) or 
(f)(2)(ii) of this section, this is considered a single excursion for 
the control device.
    (i) When the batch cycle daily average value of one or more 
monitored parameters is above the maximum or below the minimum 
established level for the given parameters.
    (ii) When monitoring data are insufficient. Monitoring data shall be 
considered insufficient when measured values are not available for at 
least 75 percent of the 15-minute periods when batch emission episodes, 
or portions thereof, selected to be controlled are being vented to the 
control device during the operating day.
    (g) Excused excursions. A number of excused excursions shall be 
allowed for each control or recovery device for each semiannual period. 
The number of excused excursions for each semiannual period is specified 
in paragraphs (g)(1) through (g)(6) of this section. This paragraph (g) 
applies to affected sources required to submit Periodic Reports 
semiannually or quarterly. The first semiannual period is the 6-month 
period starting the date the Notification of Compliance Status is due.
    (1) For the first semiannual period--six excused excursions.
    (2) For the second semiannual period--five excused excursions.
    (3) For the third semiannual period--four excused excursions.
    (4) For the fourth semiannual period--three excused excursions.
    (5) For the fifth semiannual period--two excused excursions.
    (6) For the sixth and all subsequent semiannual periods--one excused 
excursion.



Sec. 63.1335  General recordkeeping and reporting provisions.

    (a) Data retention. Each owner or operator of an affected source 
shall keep copies of all applicable records and reports required by this 
subpart for at least 5 years, unless otherwise specified in this 
subpart.
    (b) Requirements of subpart A of this part. The owner or operator of 
an affected source shall comply with the applicable recordkeeping and 
reporting requirements in subpart A of this part as specified in Table 1 
of this subpart. These requirements include, but are not limited to, the 
requirements specified in paragraphs (b)(1) and (b)(2) of this section.
    (1) Start-up, shutdown, and malfunction plan. The owner or operator 
of an affected source shall develop and implement a written start-up, 
shutdown, and malfunction plan as specified in Sec. 63.6(e)(3). This 
plan shall describe, in detail, procedures for operating and maintaining 
the affected source during periods of start-up, shutdown, and 
malfunction and a program for corrective action for malfunctioning 
process and air pollution control equipment used to comply with this 
subpart. The affected source shall keep this plan onsite and shall 
incorporate it by reference into their operating permit. Records 
associated with the plan shall be kept as specified in paragraphs 
(b)(1)(i)(A) through (b)(1)(i)(D) of this section. Reports related to 
the plan shall be submitted as specified in paragraph (b)(1)(ii) of this 
section.
    (i) Records of start-up, shutdown, and malfunction. The owner or 
operator shall keep the records specified in paragraphs (b)(1)(i)(A) 
through (b)(1)(i)(D) of this section.
    (A) Records of the occurrence and duration of each malfunction of 
air pollution control equipment or continuous monitoring systems used to 
comply with this subpart.
    (B) For each start-up, shutdown, or malfunction, a statement that 
the procedures specified in the affected source's start-up, shutdown, 
and malfunction plan were followed; alternatively, documentation of any 
actions taken that are not consistent with the plan.
    (C) For continuous monitoring systems used to comply with this 
subpart, records documenting the completion of calibration checks and 
maintenance of continuous monitoring systems that are specified in the 
manufacturer's instructions.
    (D) Records specified in paragraphs (b)(1)(i)(B) and (b)(1)(i)(C) of 
this section are not required if they pertain solely to Group 2 emission 
points that

[[Page 253]]

are not included in an emissions average or to Group 2 continuous 
process vents subject to Sec. 63.1315(a) with a total resource 
effectiveness value greater than 4.0 or, for Group 2 continuous process 
vents subject to Sec. 63.1315(b), with a total resource effectiveness 
value greater than 6.7.
    (ii) Reports of start-up, shutdown, and malfunction. For the 
purposes of this subpart, the semiannual start-up, shutdown, and 
malfunction reports shall be submitted on the same schedule as the 
Periodic Reports required under paragraph (e)(6) of this section instead 
of the schedule specified in Sec. 63.10(d)(5)(i). Said reports shall 
include the information specified in paragraphs (b)(1)(i)(A) through 
(b)(1)(i)(C) of this section and shall contain the name, title, and 
signature of the owner or operator or other responsible official who is 
certifying its accuracy.
    (2) Application for approval of construction or reconstruction. For 
new affected sources, each owner or operator shall comply with the 
provisions in Sec. 63.5 regarding construction and reconstruction, 
excluding the provisions specified in Sec. 63.5 (d)(1)(ii)(H), (d)(2), 
and (d)(3)(ii).
    (c) Requirements of subpart H of this part. Owners or operators of 
affected sources shall comply with the reporting and recordkeeping 
requirements in subpart H of this part, except as specified in 
Sec. 63.1331.
    (d) Recordkeeping and documentation. Owners or operators required to 
keep continuous records shall keep records as specified in paragraphs 
(d)(1) through (d)(8) of this section, unless an alternative 
recordkeeping system has been requested and approved as specified in 
paragraph (g) or (h) of this section. Documentation requirements are 
specified in paragraphs (d)(9) and (d)(10) of this section.
    (1) The monitoring system shall measure data values at least once 
every 15 minutes.
    (2) The owner or operator shall record either each measured data 
value or block average values for 1 hour or shorter periods calculated 
from all measured data values during each period. If values are measured 
more frequently than once per minute, a single value for each minute may 
be used to calculate the hourly (or shorter period) block average 
instead of all measured values. Owners or operators of batch process 
vents must record each measured data value.
    (3) Daily average (or batch cycle daily average) values of each 
continuously monitored parameter shall be calculated for each operating 
day as specified in paragraphs (d)(3)(i) through (d)(3)(ii) of this 
section, except as specified in paragraph (d)(6) of this section.
    (i) The daily average value or batch cycle daily average shall be 
calculated as the average of all parameter values recorded during the 
operating day. As specified in Sec. 63.1326(e)(2)(i), only parameter 
values measured during those batch emission episodes, or portions 
thereof, in the batch cycle that the owner or operator has chosen to 
control shall be used to calculate the average. The calculated average 
shall cover a 24-hour period if operation is continuous, or the number 
of hours of operation per operating day if operation is not continuous.
    (ii) The operating day shall be the period the owner or operator 
specifies in the operating permit or the Notification of Compliance 
Status. It may be from midnight to midnight or another 24-hour period.
    (4) Records required when out of compliance. If the daily average 
(or batch cycle daily average) value of a monitored parameter for a 
given operating day is below the minimum level or above the maximum 
level established in the Notification of Compliance Status or operating 
permit, the owner or operator shall retain the data recorded that 
operating day under paragraph (d)(2) of this section.
    (5) Records required when in compliance for daily average value or 
batch cycle daily average value. If the daily average (or batch cycle 
daily average) value of a monitored parameter for a given operating day 
is above the minimum level or below the maximum level established in the 
Notification of Compliance Status or operating permit, the owner or 
operator shall either:
    (i) Retain block average values for 1 hour or shorter periods for 
that operating day; or
    (ii) Retain the data recorded in paragraph (d)(2) of this section.

[[Page 254]]

    (6) Records required when all recorded values are in compliance. If 
all recorded values for a monitored parameter during an operating day 
are above the minimum level or below the maximum level established in 
the Notification of Compliance Status or operating permit, the owner or 
operator may record that all values were above the minimum level or 
below the maximum level rather than calculating and recording a daily 
average (or batch cycle daily average) for that operating day. For these 
operating days, the records required in paragraph (d)(5) of this section 
shall also be retained for 5 years.
    (7) Monitoring data recorded during periods of monitoring system 
breakdowns, repairs, calibration checks, and zero (low-level) and high-
level adjustments shall not be included in any average computed under 
this subpart. Records shall be kept of the times and durations of all 
such periods.
    (8) In addition to the periods specified in paragraph (d)(7) of this 
section, records shall be kept of the times and durations of any other 
periods during process operation or control device operation when 
monitors are not operating. For batch process vents, this paragraph 
(d)(8) only applies during batch emission episodes, or portions thereof, 
that the owner or operator has selected to control.
    (9) For each TPPU that is not part of the affected source because it 
does not use as a reactant or process solvent, or produce as a by-
product or co-product any organic HAP, the owner or operator shall 
maintain the documentation specified in Sec. 63.1310(b)(1).
    (10) For each flexible operation unit in which the primary product 
is determined to be something other than a thermoplastic product, the 
owner or operator shall maintain the documentation specified in 
Sec. 63.1310(f)(6).
    (e) Reporting and notification. (1) In addition to the reports and 
notifications required by subparts A and H of this part, as specified in 
this subpart, the owner or operator of an affected source shall prepare 
and submit the reports listed in paragraphs (e)(3) through (e)(8) of 
this section, as applicable.
    (2) All reports required under this subpart shall be sent to the 
Administrator at the addresses listed in Sec. 63.13. If acceptable to 
both the Administrator and the owner or operator of an affected source, 
reports may be submitted on electronic media.
    (3) Precompliance Report. Affected sources requesting an extension 
for compliance, or requesting approval to use alternative monitoring 
parameters, alternative continuous monitoring and recordkeeping, or 
alternative controls, shall submit a Precompliance Report according to 
the schedule described in paragraph (e)(3)(i) of this section. The 
Precompliance Report shall contain the information specified in 
paragraphs (e)(3)(ii) through (e)(3)(vi) of this section, as 
appropriate.
    (i) Submittal dates. The Precompliance Report shall be submitted to 
the Administrator no later than 12 months prior to the compliance date. 
For new affected sources, the Precompliance Report shall be submitted to 
the Administrator with the application for approval of construction or 
reconstruction required in paragraph (b)(2) of this section.
    (ii) A request for an extension for compliance must be submitted in 
the Precompliance Report, if it has not been submitted to the operating 
permit authority as part of the operating permit application. The 
request for a compliance extension will include the data outlined in 
Sec. 63.6(i)(6)(i) (A), (B), and (D), as required in Sec. 63.1311(e)(1).
    (iii) The alternative monitoring parameter information required in 
paragraph (f) of this section shall be submitted if, for any emission 
point, the owner or operator of an affected source seeks to comply 
through the use of a control technique other than those for which 
monitoring parameters are specified in this subpart or in subpart G of 
this part or seeks to comply by monitoring a different parameter than 
those specified in this subpart or in subpart G of this part.
    (iv) If the affected source seeks to comply using alternative 
continuous monitoring and recordkeeping as specified in paragraph (g) of 
this section, the information requested in paragraph (e)(3)(iv)(A) or 
(e)(3)(iv)(B) of this section must be submitted in the Precompliance 
Report.

[[Page 255]]

    (A) The owner or operator must submit notification of the intent to 
use the provisions specified in paragraph (g) of this section; or
    (B) The owner or operator must submit a request for approval to use 
alternative continuous monitoring and recordkeeping provisions as 
specified in paragraph (g) of this section.
    (v) The owner or operator shall report the intent to use alternative 
controls to comply with the provisions of this subpart. Alternative 
controls must be deemed by the Administrator to be equivalent to the 
controls required by the standard, under the procedures outlined in 
Sec. 63.6(g).
    (vi) If an owner or operator demonstrates that the emissions 
estimation equations contained in Sec. 63.1323(b) are inappropriate as 
specified in Sec. 63.1323(b)(6)(ii)(B), the information required by 
Sec. 63.1323(b)(6)(ii)(D) shall be submitted.
    (vii) If an owner or operator establishes parameter monitoring 
levels according to the procedures contained in Sec. 63.1334 (c) or (d), 
the information specified by Sec. 63.1334 (c) or (d), as appropriate.
    (4) Emissions Averaging Plan. For all existing affected sources 
using emissions averaging, an Emissions Averaging Plan shall be 
submitted for approval according to the schedule and procedures 
described in paragraph (e)(4)(i) of this section. The Emissions 
Averaging Plan shall contain the information specified in paragraph 
(e)(4)(ii) of this section, unless the information required in paragraph 
(e)(4)(ii) of this section is submitted with an operating permit 
application. An owner or operator of an affected source who submits an 
operating permit application instead of an Emissions Averaging Plan 
shall submit the information specified in paragraph (e)(8) of this 
section. In addition, a supplement to the Emissions Averaging Plan, as 
required under paragraph (e)(4)(iii) of this section, is to be submitted 
whenever alternative controls or operating scenarios may be used to 
comply with this subpart. Updates to the Emissions Averaging Plan shall 
be submitted in accordance with paragraph (e)(4)(iv) of this section.
    (i) Submittal and approval. The Emissions Averaging Plan shall be 
submitted no later than 18 months prior to the compliance date, and it 
is subject to Administrator approval. The Administrator shall determine 
within 120 operating days whether the Emissions Averaging Plan submitted 
presents sufficient information. The Administrator shall either approve 
the Emissions Averaging Plan, request changes, or request that the owner 
or operator submit additional information. Once the Administrator 
receives sufficient information, the Administrator shall approve, 
disapprove, or request changes to the plan within 120 operating days.
    (ii) Information required. The Emissions Averaging Plan shall 
contain the information listed in paragraphs (e)(4)(ii)(A) through 
(e)(4)(ii)(K) of this section for all emission points included in an 
emissions average.
    (A) The required information shall include the identification of all 
emission points in the planned emissions average and, where applicable, 
notation of whether each storage vessel, continuous process vent, batch 
process vent, aggregate batch vent stream, and process wastewater stream 
is a Group 1 or Group 2 emission point, as defined in Sec. 63.1312 or as 
designated under Sec. 63.1332 (c)(3) through (c)(5).
    (B) The required information shall include the projected emission 
debits and credits for each emission point and the sum for the emission 
points involved in the average calculated according to Sec. 63.1332. The 
projected credits must be greater than or equal to the projected debits, 
as required under Sec. 63.1332(e)(3).
    (C) The required information shall include the specific control 
technology or pollution prevention measure that will be used for each 
emission point included in the average and date of application or 
expected date of application.
    (D) The required information shall include the specific 
identification of each emission point affected by a pollution prevention 
measure. To be considered a pollution prevention measure, the criteria 
in Sec. 63.1332(j)(1) must be met. If the same pollution prevention 
measure reduces or eliminates emissions from multiple emission points in 
the average, the owner or operator

[[Page 256]]

must identify each of these emission points.
    (E) The required information shall include a statement that the 
compliance demonstration, monitoring, inspection, recordkeeping, and 
reporting provisions in Sec. 63.1332 (m), (n), and (o) that are 
applicable to each emission point in the emissions average will be 
implemented beginning on or before the date of compliance.
    (F) The required information shall include documentation of the data 
listed in paragraphs (e)(4)(ii)(F)(1) through (e)(4)(ii)(F)(5) of this 
section for each storage vessel and continuous process vent subject to 
Sec. 63.1315 included in the average.
    (1) The required documentation shall include the values of the 
parameters used to determine whether the emission point is Group 1 or 
Group 2. Where TRE index value is used for continuous process vent group 
determination, the estimated or measured values of the parameters used 
in the TRE equation in Sec. 63.115(d) and the resulting TRE index value 
shall be submitted.
    (2) The required documentation shall include the estimated values of 
all parameters needed for input to the emission debit and credit 
calculations in Sec. 63.1332 (g) and (h). These parameter values shall 
be specified in the affected source's Emissions Averaging Plan (or 
operating permit) as enforceable operating conditions. Changes to these 
parameters must be reported as required by paragraph (e)(4)(iv) of this 
section.
    (3) The required documentation shall include the estimated percent 
reduction if a control technology achieving a lower percent reduction 
than the efficiency of the applicable reference control technology or 
standard is or will be applied to the emission point.
    (4) The required documentation shall include the anticipated nominal 
efficiency if a control technology achieving a greater percent emission 
reduction than the efficiency of the reference control technology is or 
will be applied to the emission point. The procedures in Sec. 63.1332(i) 
shall be followed to apply for a nominal efficiency.
    (5) The required documentation shall include the operating plan 
required by Sec. 63.1314, as specified in Sec. 63.122 (a)(2) and (b) for 
each storage vessel controlled with a closed-vent system with a control 
device other than a flare.
    (G) The information specified in paragraph (f) of this section shall 
be included in the Emissions Averaging Plan for:
    (1) Each continuous process vent subject to Sec. 63.1315 controlled 
by a pollution prevention measure or control technique for which 
monitoring parameters or inspection procedures are not specified in 
Sec. 63.114; and
    (2) Each storage vessel controlled by pollution prevention or a 
control technique other than an internal or external floating roof or a 
closed vent system with a control device.
    (H) The required information shall include documentation of the data 
listed in paragraphs (e)(4)(ii)(H)(1) through (e)(4)(ii)(H)(5) of this 
section for each collection of continuous process vents located in a 
process section within the affected source subject to Sec. 63.1316 
(b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or (c)(1) included in the 
average.
    (1) For continuous process vents subject to Sec. 63.1316(b)(1)(i), 
the required documentation shall include the values of the parameters 
used to determine whether the emission point is Group 1 or Group 2. 
Continuous process vents subject to Sec. 63.1316 (b)(1)(ii), (b)(2)(i), 
(b)(2)(ii), or (c)(1) are considered Group 1 emission points for 
purposes of emissions averaging, as specified in Sec. 63.1332(c)(5).
    (2) The required documentation shall include the estimated values of 
all parameters needed for input to the emission debit and credit 
calculations in Sec. 63.1332 (g) and (h). These parameter values shall 
be specified in the affected source's Emissions Averaging Plan (or 
operating permit) as enforceable operating conditions. Changes to these 
parameters must be reported as required by paragraph (e)(4)(iv) of this 
section.
    (3) For process sections generating debits or credits by comparing 
actual emissions expressed as kg HAP emissions per Mg of product to the 
applicable standard, the required documentation shall include the actual 
emission level expressed as kg HAP emissions per Mg of product.
    (4) For process sections using combustion control devices, the 
required

[[Page 257]]

documentation shall include the estimated percent reduction if a control 
technology achieving a lower percent reduction than the efficiency of 
the applicable reference control technology or standard is or will be 
applied to the emission point.
    (5) For process sections using combustion control devices, the 
required documentation shall include the anticipated nominal efficiency 
if a control technology achieving a greater percent emission reduction 
than the efficiency of the reference control technology is or will be 
applied to the emission point. The procedures in Sec. 63.1332(i) shall 
be followed to apply for a nominal efficiency.
    (I) For each pollution prevention measure or control device used to 
reduce air emissions of organic HAP from each collection of continuous 
process vents located in a process section within the affected source 
subject to Sec. 63.1316 (b)(1)(i), (b)(1)(ii), (b)(2)(i), (b)(2)(ii), or 
(c)(1) and for which no monitoring parameters or inspection procedures 
are specified in Sec. 63.114, the information specified in paragraph (f) 
of this section, Alternative Monitoring Parameters, shall be included in 
the Emissions Averaging Plan.
    (J) The required information shall include documentation of the data 
listed in paragraphs (e)(4)(ii)(J)(1) through (e)(4)(ii)(J)(3) of this 
section for each batch process vent and aggregate batch vent stream 
included in the average.
    (1) The required documentation shall include the values of the 
parameters used to determine whether the emission point is Group 1 or 
Group 2.
    (2) The required documentation shall include the estimated values of 
all parameters needed for input to the emission debit and credit 
calculations in Sec. 63.1332 (g) and (h). These parameter values shall 
be specified in the affected source's Emissions Averaging Plan (or 
operating permit) as enforceable operating conditions. Changes to these 
parameters must be reported as required by paragraph (e)(4)(iv) of this 
section.
    (3) For batch process vents, the required documentation shall 
include the estimated percent reduction for the batch cycle. For 
aggregate batch vent streams, the required documentation shall include 
the estimated percent reduction achieved on a continuous basis.
    (K) For each pollution prevention measure or control device used to 
reduce air emissions of organic HAP from batch process vents or 
aggregate batch vent streams and for which no monitoring parameters or 
inspection procedures are specified in Sec. 63.1324, the information 
specified in paragraph (f) of this section, Alternative Monitoring 
Parameters, shall be included in the Emissions Averaging Plan.
    (L) The required information shall include documentation of the data 
listed in paragraphs (e)(4)(ii)(L)(1) through (e)(4)(ii)(L)(4) of this 
section for each process wastewater stream included in the average.
    (1) The required documentation shall include the data used to 
determine whether the wastewater stream is a Group 1 or Group 2 
wastewater stream.
    (2) The required documentation shall include the estimated values of 
all parameters needed for input to the wastewater emission credit and 
debit calculations in Sec. 63.1332 (g) and (h). These parameter values 
shall be specified in the affected source's Emissions Averaging Plan (or 
operating permit) as enforceable operating conditions. Changes to these 
parameters must be reported as required by paragraph (e)(4)(iv) of this 
section.
    (3) The required documentation shall include the estimated percent 
reduction if:
    (i) A control technology that achieves an emission reduction less 
than or equal to the emission reduction that would otherwise have been 
achieved by a steam stripper designed to the specifications found in 
Sec. 63.138(g) is or will be applied to the wastewater stream;
    (ii) A control technology achieving less than or equal to 95 percent 
emission reduction is or will be applied to the vapor stream(s) vented 
and collected from the treatment processes; or
    (iii) A pollution prevention measure is or will be applied.
    (4) The required documentation shall include the anticipated nominal 
efficiency if the owner or operator plans to apply for a nominal 
efficiency under Sec. 63.1332(i). A nominal efficiency shall be applied 
for if:

[[Page 258]]

    (i) A control technology that achieves an emission reduction greater 
than the emission reduction that would have been achieved by a steam 
stripper designed to the specifications found in Sec. 63.138(g), is or 
will be applied to the wastewater stream; or
    (ii) A control technology achieving greater than 95 percent emission 
reduction is or will be applied to the vapor stream(s) vented and 
collected from the treatment processes.
    (M) For each pollution prevention measure, treatment process, or 
control device used to reduce air emissions of organic HAP from 
wastewater and for which no monitoring parameters or inspection 
procedures are specified in Sec. 63.143, the information specified in 
paragraph (f) of this section, Alternative Monitoring Parameters, shall 
be included in the Emissions Averaging Plan.
    (N) The required information shall include documentation of the data 
required by Sec. 63.1332(k). The documentation must demonstrate that the 
emissions from the emission points proposed to be included in the 
average will not result in greater hazard or, at the option of the 
Administrator, greater risk to human health or the environment than if 
the emission points were not included in an emissions average.
    (iii) Supplement to Emissions Averaging Plan. The owner or operator 
required to prepare an Emissions Averaging Plan under paragraph (e)(4) 
of this section shall also prepare a supplement to the Emissions 
Averaging Plan for any alternative controls or operating scenarios that 
may be used to achieve compliance.
    (iv) Updates to Emissions Averaging Plan. The owner or operator of 
an affected source required to submit an Emissions Averaging Plan under 
paragraph (e)(4) of this section shall also submit written updates of 
the Emissions Averaging Plan to the Administrator for approval under the 
circumstances described in paragraphs (e)(4)(iv)(A) and (e)(4)(iv)(B) of 
this section unless the relevant information has been included and 
submitted in an operating permit application or amendment.
    (A) The owner or operator who plans to make a change listed in 
either paragraph (e)(4)(iv)(A)(1) or (e)(4)(iv)(A)(2) of this section 
shall submit an Emissions Averaging Plan update at least 120 operating 
days prior to making the change.
    (1) An Emissions Averaging Plan update shall be submitted whenever 
an owner or operator elects to achieve compliance with the emissions 
averaging provisions in Sec. 63.1332 by using a control technique other 
than that specified in the Emissions Averaging Plan or plans to monitor 
a different parameter or operate a control device in a manner other than 
that specified in the Emissions Averaging Plan.
    (2) An Emissions Averaging Plan update shall be submitted whenever 
an emission point or a TPPU is added to an existing affected source and 
is planned to be included in an emissions average, or whenever an 
emission point not included in the emissions average described in the 
Emissions Averaging Plan is to be added to an emissions average. The 
information in paragraph (e)(4) of this section shall be updated to 
include the additional emission point.
    (B) The owner or operator who has made a change as defined in 
paragraph (e)(4)(iv)(B)(1) or (e)(4)(iv)(B)(2) of this section shall 
submit an Emissions Averaging Plan update within 90 operating days after 
the information regarding the change is known to the affected source. 
The update may be submitted in the next quarterly periodic report if the 
change is made after the date the Notification of Compliance Status is 
due.
    (1) An Emissions Averaging Plan update shall be submitted whenever a 
process change is made such that the group status of any emission point 
in an emissions average changes.
    (2) An Emissions Averaging Plan update shall be submitted whenever a 
value of a parameter in the emission credit or debit equations in 
Sec. 63.1332 (g) or (h) changes such that it is below the minimum or 
above the maximum established level specified in the Emissions Averaging 
Plan and causes a decrease in the projected credits or an increase in 
the projected debits.
    (C) The Administrator shall approve or request changes to the 
Emissions

[[Page 259]]

Averaging Plan update within 120 operating days of receipt of sufficient 
information regarding the change for emission points included in 
emissions averages.
    (5) Notification of Compliance Status. For existing and new affected 
sources, a Notification of Compliance Status shall be submitted within 
150 operating days after the compliance dates specified in Sec. 63.1311. 
The notification shall contain the information listed in paragraphs 
(e)(5)(i) through (e)(5)(viii) of this section.
    (i) The results of any emission point group determinations, process 
section applicability determinations, performance tests, inspections, 
continuous monitoring system performance evaluations, any other 
information used to demonstrate compliance, and any other information 
required to be included in the Notification of Compliance Status under 
Sec. 63.122 for storage vessels, Sec. 63.117 for continuous process 
vents, Sec. 63.146 for process wastewater, Sec. 63.1316 through 
Sec. 63.1320 for continuous process vents subject to Sec. 63.1316, 
Sec. 63.1327 for batch process vents, Sec. 63.1329 for process contact 
cooling towers, and Sec. 63.1332 for emission points included in an 
emissions average. In addition, each owner or operator shall comply with 
paragraph (e)(5)(i)(A) and (e)(5)(i)(B) of this section.
    (A) For performance tests, group determinations, and process section 
applicability determinations that are based on measurements, the 
Notification of Compliance Status shall include one complete test 
report, as described in paragraph (e)(5)(i)(B) of this section, for each 
test method used for a particular kind of emission point. For additional 
tests performed for the same kind of emission point using the same 
method, the results and any other required information shall be 
submitted, but a complete test report is not required.
    (B) A complete test report shall include a brief process 
description, sampling site description, description of sampling and 
analysis procedures and any modifications to standard procedures, 
quality assurance procedures, record of operating conditions during the 
test, record of preparation of standards, record of calibrations, raw 
data sheets for field sampling, raw data sheets for field and laboratory 
analyses, documentation of calculations, and any other information 
required by the test method.
    (ii) For each monitored parameter for which a maximum or minimum 
level is required to be established under Sec. 63.120(d)(3) for storage 
vessels, Sec. 63.114(e) for continuous process vents, Sec. 63.1324 for 
batch process vents and aggregate batch vent streams, Sec. 63.143(f) for 
process wastewater, Sec. 63.1332(m) for emission points in emissions 
averages, paragraph (e)(8) or (f) of this section, the Notification of 
Compliance Status shall contain the information specified in paragraphs 
(e)(5)(ii)(A) through (e)(5)(ii)(D) of this section, unless this 
information has been established and provided in the operating permit.
    (A) The required information shall include the specific maximum or 
minimum level of th