[Federal Register Volume 80, Number 173 (Tuesday, September 8, 2015)]
[Proposed Rules]
[Pages 54145-54169]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-20768]



[[Page 54145]]

Vol. 80

Tuesday,

No. 173

September 8, 2015

Part IV





Environmental Protection Agency





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40 CFR Parts 51, 60, 61 et al.





Revisions to Test Methods, Performance Specifications, and Testing 
Regulations for Air Emission Sources; Proposed Rule

Federal Register / Vol. 80 , No. 173 / Tuesday, September 8, 2015 / 
Proposed Rules

[[Page 54146]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 51, 60, 61, and 63

[EPA-HQ-OAR-2014-0292; FRL-9931-50-OAR]
RIN 2060-AS34


Revisions to Test Methods, Performance Specifications, and 
Testing Regulations for Air Emission Sources

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: This action proposes technical and editorial corrections and 
revisions to regulations related to source testing of emissions. This 
proposed rule will make corrections and updates to testing provisions 
that contain inaccuracies and outdated procedures, and provide 
alternatives to existing testing regulations. These revisions will 
improve the quality of data and provide testers flexibility to use 
recently-approved alternative procedures. Many of these changes were 
suggested by testers and other end-users, and they will not impose new 
substantive requirements on source owners or operators.

DATES: Comments must be received on or before November 9, 2015.
    Public Hearing. If anyone contacts the Environmental Protection 
Agency (EPA) by September 18, 2015 requesting to speak at a public 
hearing, a hearing will be held on October 8, 2015.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2014-0292, by one of the following methods:
     Federal eRulemaking Portal: www.regulations.gov. Follow 
the on-line instructions for submitting comments.
     Email: [email protected]. Include docket ID No. EPA-
HQ-OAR-2014-0292 in the subject line of the message.
     Fax: (202) 566-9744.
     Mail: Attention Docket No. EPA-HQ-OAR-2014-0292, 
Environmental Protection Agency, Mailcode: 28221T, 1200 Pennsylvania 
Ave. NW., Washington, DC 20460.
     Hand Delivery: Docket No. EPA-HQ-OAR-2014-0292, EPA Docket 
Center, Public Reading Room, EPA WJC West Building, Room 3334, 1301 
Constitution Ave. NW., Washington, DC 20460. Such deliveries are only 
accepted during the Docket's normal hours of operation, and special 
arrangements should be made for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-
2014-0292. The EPA's policy is that all comments received will be 
included in the public docket without change and may be made available 
online at http://www.regulations.gov, including any personal 
information provided, unless the comment includes information claimed 
to be Confidential Business Information (CBI) or other information 
whose disclosure is restricted by statute. Do not submit information 
that you consider to be CBI or otherwise protected through 
www.regulations.gov or email. The www.regulations.gov Web site is an 
``anonymous access'' system, which means the EPA will not know your 
identity or contact information unless you provide it in the body of 
your comment. If you send an email comment directly to the EPA without 
going through www.regulations.gov, your email address will be 
automatically captured and included as part of the comment that is 
placed in the public docket and made available on the Internet. If you 
submit an electronic comment, the EPA recommends that you include your 
name and other contact information in the body of your comment and with 
any disk or CD-ROM you submit. If the EPA cannot read your comment due 
to technical difficulties and cannot contact you for clarification, the 
EPA may not be able to consider your comment. Electronic files should 
avoid the use of special characters, any form of encryption, and be 
free of any defects or viruses.
    Docket: All documents in the docket are listed in the 
www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in www.regulations.gov or in hard copy at the Revisions to Test Methods 
and Testing Regulations Docket, EPA/DC, EPA WJC West Building, Room 
3334, 1301 Constitution Ave. NW., Washington, DC. The Public Reading 
Room is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, 
excluding legal holidays. The telephone number for the Public Reading 
Room is (202) 566-1744, and the telephone number for the EPA Docket 
Center is (202) 566-1742.

FOR FURTHER INFORMATION CONTACT: Ms. Lula H. Melton, Office of Air 
Quality Planning and Standards, Air Quality Assessment Division (E143-
02), Environmental Protection Agency, Research Triangle Park, NC 27711; 
telephone number: (919) 541-2910; fax number: (919) 541-0516; email 
address: [email protected].

SUPPLEMENTARY INFORMATION: 
    The supplementary information in this preamble is organized as 
follows:

I. General Information
    A. Does this action apply to me?
    B. What should I consider as I prepare my comments for the EPA?
    C. Where can I get a copy of this document?
II. Background
III. Summary of Proposed Amendments
    A. Appendix M to Part 51
    B. Method 201A of Appendix M to Part 51
    C. Method 202 of Appendix M to Part 51
    D. Appendix P to Part 51
    E. General Provisions (Subpart A) Part 60
    F. Standards of Performance for Stationary Spark Ignition 
Internal Combustion Engines (Subpart JJJJ) Part 60
    G. Method 1 of Appendix A-1 to Part 60
    H. Method 2 of Appendix A-1 to Part 60
    I. Method 2G of Appendix A-2 to Part 60
    J. Method 3C of Appendix A-2 to Part 60
    K. Method 4 of Appendix A-3 to Part 60
    L. Method 5 of Appendix A-3 to Part 60
    M. Method 5H of Appendix A-3 to Part 60
    N. Method 5I of Appendix A-3 to Part 60
    O. Method 6C of Appendix A-4 to Part 60
    P. Method 7E of Appendix A-4 to Part 60
    Q. Method 10 of Appendix A-4 to Part 60
    R. Methods 10A and 10B of Appendix A-4 to Part 60
    S. Method 15 of Appendix A-5 to Part 60
    T. Method 16C of Appendix A-6 to Part 60
    U. Method 18 of Appendix A-6 to Part 60
    V. Method 25C of Appendix A-7 to Part 60
    W. Method 26 of Appendix A-8 to Part 60
    X. Method 26A of Appendix A-8 to Part 60
    Y. Method 29 of Appendix A-8 to Part 60
    Z. Method 30A of Appendix A-8 to Part 60
    AA. Method 30B of Appendix A-8 to Part 60
    BB. Appendix B to Part 60--Performance Specifications
    CC. Performance Specification 1 of Appendix B to Part 60
    DD. Performance Specification 2 of Appendix B to Part 60
    EE. Performance Specification 3 of Appendix B to Part 60
    FF. Performance Specification 4A of Appendix B to Part 60
    GG. Performance Specification 11 of Appendix B to Part 60
    HH. Performance Specification 15 of Appendix B to Part 60
    II. Performance Specification 16 of Appendix B to Part 60
    JJ. Procedure 2 of Appendix F to Part 60
    KK. General Provisions (Subpart A) Part 61
    LL. Method 107 of Appendix B to Part 61
    MM. General Provisions (Subpart A) Part 63
    NN. Method 320 of Appendix A to Part 63
IV. Request for Comments
V. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and 
Executive

[[Page 54147]]

Order 13563: Improving Regulation and Regulatory Review
    B. Paperwork Reduction Act (PRA)
    C. Regulatory Flexibility Act (RFA)
    D. Unfunded Mandates Reform Act (UMRA)
    E. Executive Order 13132: Federalism
    F. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    G. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution or Use
    I. National Technology Transfer and Advancement Act and 1 CFR 
Part 51
    J. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations

I. General Information

A. Does this action apply to me?

    The proposed amendments apply to industries that are already 
subject to the current provisions of parts 51, 60, 61, and 63. For 
example, Performance Specification 4A applies to municipal waste 
combustors and hazardous waste incinerators. We did not list all of the 
specific affected industries or their North American Industry 
Classification System (NAICS) codes herein since there are many 
affected sources. If you have any questions regarding the applicability 
of this action to a particular entity, consult either the air 
permitting authority for the entity or your EPA regional representative 
as listed in 40 CFR 63.13.

B. What should I consider as I prepare my comments for the EPA?

    1. Submitting CBI. Do not submit this information to the EPA 
through http://www.regulations.gov or email. Clearly mark any of the 
information that you claim to be CBI. For CBI information in a disk or 
CD-ROM that you mail to the EPA, mark the outside of the disk or CD-ROM 
as CBI and then identify electronically within the disk or CD-ROM the 
specific information that is claimed as CBI. In addition to one 
complete version of the comment that includes information claimed as 
CBI, a copy of the comment that does not contain the information 
claimed as CBI must be submitted for inclusion in the public docket. 
Information so marked will not be disclosed except in accordance with 
procedures set forth in 40 CFR part 2.
    2. Tips for Preparing Your Comments. When submitting comments, 
remember to:
     Follow directions--The agency may ask you to respond to 
specific questions or organize comments by referencing a Code of 
Federal Regulations (CFR) part or section number.
     Explain why you agree or disagree, suggest alternatives, 
and substitute language for your requested changes.
     Describe any assumptions and provide any technical 
information and/or data that you used.
     If you estimate potential costs or burdens, explain how 
you arrived at your estimate in sufficient detail to allow for it to be 
reproduced.
     Provide specific examples to illustrate your concerns, and 
suggest alternatives.
     Explain your views as clearly as possible, avoiding the 
use of profanity or personal threats.
     Make sure to submit your comments by the comment period 
deadline identified.

C. Where can I get a copy of this document?

    In addition to being available in the docket, an electronic copy of 
this proposed rule will also be available on the Worldwide Web (WWW) 
through the Technology Transfer Network (TTN). Following signature, a 
copy of this proposed rule will be posted at the following address: 
http://www.epa.gov/ttn/emc/. The TTN provides information and 
technology exchange in various areas of air pollution control.

II. Background

    The EPA has been cataloging errors and corrections, as well as 
revisions that are needed to test methods, performance specifications, 
and associated regulations in 40 CFR parts 51, 60, 61, and 63. The most 
recent final rule that updated and revised methods was published on 
February 27, 2014 (79 FR 11228). Many of the corrections and revisions 
herein have been brought to our attention by affected parties and end-
users. The corrections and revisions consist primarily of typographical 
errors, technical errors in equations and diagrams, updates to 
procedures, and the addition of alternative equipment and methods the 
Agency has found acceptable to use.

III. Summary of Proposed Amendments

A. Appendix M to Part 51

    In paragraph (4)(a) of appendix M to part 51, we propose to add 
Methods 30A and 30B to the list of methods not requiring the use of 
audit samples. Consistent with the criteria used in establishing the 
original list of methods for which no audit samples are required (75 FR 
55636), Method 30A is an instrumental test method that already has 
sufficient calibration and quality assurance requirements. Method 30B 
has sufficient performance-based quality assurance measures including 
analysis of an independent calibration standard with each set of field 
samples.

B. Method 201A of Appendix M to Part 51

    In Method 201A, the constant in equation 9, which is shown as 
0.07657, will be corrected to 0.007657.

C. Method 202 of Appendix M to Part 51

    In Method 202, we propose to add section 3.8 to incorporate ASTM 
E617-13 by reference. The first sentence in paragraph 8.5.4.3 will be 
revised by adding ``back half of the filterable PM filter holder.'' 
Section 9.10 erroneously states ``You must purge the assembled train as 
described in sections 8.5.3.2 and 8.5.3.3.'' The statement will be 
corrected to reference section 8.5.3. Sections 10.3 and 10.4 will be 
added to require calibration of the balance used to weigh impingers and 
to require a multipoint calibration of the analytical balance. During 
the most recent revision of Method 202, sections 11.2.2.1, 11.2.2.2, 
11.2.2.3, 11.2.2.4 and figure 7 were inadvertently deleted and will be 
re-inserted into the method.

D. Appendix P to Part 51

    In appendix P to part 51, section 3.3 erroneously refers to section 
2.1 of Performance Specification 2 of appendix B of part 60. The 
citation will be corrected to section 6.1. Section 5.1.3 erroneously 
refers to paragraph 4.1.4, which does not exist; the text will be 
changed to reflect the correct references to paragraphs 3.1.4 and 
3.1.5.

E. General Provisions (Subpart A) Part 60

    In the General Provisions of part 60, Sec.  60.8(f) will be revised 
to require the reporting of specific emissions test data in test 
reports. These data elements will be required regardless of whether the 
report is submitted electronically or in paper format. We are proposing 
these modifications to ensure that emissions test reporting includes 
all data necessary to assess and assure the quality of the reported 
emissions data and appropriately describes and identifies the specific 
unit covered by the emissions test report. Section 60.17(g) will be 
revised to add ASTM D6911-15 to the list of incorporations by reference 
and to re-number the remaining consensus standards that are 
incorporated by reference in alpha-numeric order.

[[Page 54148]]

F. Standards of Performance for Stationary Spark Ignition Internal 
Combustion Engines (Subpart JJJJ) Part 60

    In Table 2 of subpart JJJJ, Methods 18 and 320 and ASTM D 6348-03 
will be deleted as test method options for measuring VOC, and only 
Method 25A will be allowed.

G. Method 1 of Appendix A-1 to Part 60

    In Method 1, section 11.2.1.2, the word ``istances'' will be 
changed to ``distances'' in the second sentence. In addition, there are 
two figures labeled Figure 1-2. The second figure will be deleted.

H. Method 2 of Appendix A-1 to Part 60

    In Method 2, instructions are given for conducting S-type pitot 
calibrations. Currently, the same equipment is commonly used for both 
Methods 2 and 2G (same S-type pitot), but the calibration procedure is 
slightly different in each method. Other key pieces that enhance the 
quality assurance/quality control (QA/QC) of the calibrations will be 
added to Method 2, and the amount of blockage allowed will be reduced 
to tighten up calibration accuracy. To address these issues, changes 
will be made to sections 6.7, 10.1.2.3, 10.1.3.4, 10.1.3.7, and 
10.1.4.1.3 of Method 2. Section 10.1.4.3 inadvertently references 
section 10.1.4.4. The reference will be corrected to section 12.4.4. 
The side of Figure 2-10 labeled (b) will be deleted, and the label (a) 
will be removed from the figure.

I. Method 2G of Appendix A-2 to Part 60

    In Method 2G, instructions are given for conducting S-type pitot 
calibrations. Currently the same equipment is commonly used for both 
Methods 2 and 2G (same S-type pitot), but the calibration procedure is 
slightly different in each method. Other key pieces that enhance the 
QA/QC of the calibrations will be added to the method, and the amount 
of blockage allowed will be reduced to tighten up calibration accuracy. 
Changes will be made to sections 6.11.1, 6.11.2, 10.6.6, and 10.6.8 of 
Method 2G to address these issues.

J. Method 3C of Appendix A-2 to Part 60

    In Method 3C, section 6.3 will be revised to add subsections 
(6.3.1, 6.3.2, 6.3.3, 6.3.4, and 6.3.5) that clarify the requirements 
necessary to check analyzer linearity.

K. Method 4 of Appendix A-3 to Part 60

    In Method 4, section 10.3 (Field Balance) will be added to require 
calibration of the balance used to weigh impingers. Section 12.2.5 will 
be added, which provides another option for calculating the approximate 
moisture content. Section 16.4 will be revised to clarify that a fuel 
sample must be taken and analyzed to develop F-factors required by the 
alternative. Also, in section 16.4, percent relative humidity is 
inadvertently defined as ``calibrated hydrometer acceptable''; the word 
``hydrometer'' will be replaced with ``hygrometer.''

L. Method 5 of Appendix A-3 to Part 60

    In Method 5, we erroneously finalized the reference to the Isostack 
metering system in 79 FR 11228. Therefore, we will remove this 
reference from section 6.1.1.9 and continue to issue broadly applicable 
test method determinations or letters of assessments regarding whether 
specific alternative metering equipment meets the specifications of the 
method as was our intent in the ``Summary of Comments and Responses on 
Revisions to Test Methods and Testing Regulations'' (EPA-HQ-OAR-2010-
0114-0045). The phrase ``after ensuring that all joints have been wiped 
clean of silicone grease'' will be removed from section 8.7.6.2.5. 
Sections 10.7 and 10.8 will be added to require calibration of the 
balance used to weigh impingers and to require a multipoint calibration 
of the analytical balance.

M. Method 5H of Appendix A-3 to Part 60

    In Method 5H, sections 10.4 and 10.5 will be added to require 
calibration of the balance used to weigh impingers and to require a 
multipoint calibration of the analytical balance.

N. Method 5I of Appendix A-3 to Part 60

    In Method 5I, sections 10.1 and 10.2 will be added to require 
calibration of the balance used to weigh impingers and to require a 
multipoint calibration of the analytical balance.

O. Method 6C of Appendix A-4 to Part 60

    In Method 6C, due to numerous comments and questions, the language 
detailing the methodology for performing interference checks in section 
8.3 will be revised to clarify and streamline the procedure. We 
continue to believe that the interference test need only be repeated if 
major components are replaced with different model parts.

P. Method 7E of Appendix A-4 to Part 60

    In Method 7E, section 8.1.2 will be revised to be consistent with 
the requirements in Performance Specification 2. In cases where the 3-
point sampling is used, the three points along the measurement line 
exhibiting the highest average concentration during the stratification 
test will be 0.4, 1.2, and 2.0 meters instead of 0.4, 1.0, and 2.0 
meters.
    Also, in Method 7E, due to numerous comments and questions, the 
language in section 8.2.7 detailing the methodology for performing 
interference checks will be revised to clarify and streamline the 
procedure. We continue to believe that the interference test need only 
be repeated if major components are replaced with different model 
parts. Also, the word ``equations'' will be replaced with ``equation'' 
in the sentence in section 12.8 that reads ``If desired, calculate the 
total NOX concentration with a correction for converter 
efficiency using equation 7E-8.''

Q. Method 10 of Appendix A-4 to Part 60

    In Method 10, sections 6.2.5 and 8.4.2 will be revised, and section 
6.2.6 will be added to clarify the types of sample tanks allowed for 
integrated sampling.

R. Methods 10A and 10B of Appendix A-4 to Part 60

    Methods 10A and 10B will be revised to allow the use of sample 
tanks as an alternative to flexible bags for sample collection.

S. Method 15 of Appendix A-5 to Part 60

    In Method 15, section 8.3.2 will be revised to clarify the 
calibrations that represent partial calibration.

T. Method 16C of Appendix A-6 to Part 60

    In Method 16C, equation 16-1C will be revised to replace 
Cv (manufacturer certified concentration of a calibration 
gas in ppmv SO2) in the denominator with CS (calibration 
span in ppmv). Therefore, the definition of CS will be added to the 
nomenclature in section 12.1, and the definition of Cv will 
be deleted from the nomenclature in section 12.1.

U. Method 18 of Appendix A-6 to Part 60

    In Method 18, section 8.2.1.5.2.3 will be removed because the 
requirement to analyze two field audit samples as described in section 
9.2 has been moved to the General Provisions.

[[Page 54149]]

V. Method 25C of Appendix A-7 to Part 60

    In Method 25C, section 9.1 incorrectly references section 8.4.1; 
this reference will be corrected to section 8.4.2. Section 11.2 will be 
deleted because the audit sample analysis is now covered under the 
General Provisions. The nomenclature will be revised in section 12.1, 
and equation 25C-2 will be revised in section 12.3. Sections 12.4, 
12.5, 12.5.1, and 12.5.2 will be added to incorporate equations to 
correct sample concentrations for ambient air dilution.

W. Method 26 of Appendix A-8 to Part 60

    In Method 26, section 13.3 will be revised to indicate the correct 
method detection limit.

X. Method 26A of Appendix A-8 to Part 60

    In Method 26A, language will be added to section 4.3 indicating 
that dissociating chloride salts at elevated temperatures interfere 
with halogen acid measurement in this method, but maintaining 
particulate probe/filter temperatures at 120+/-14 [deg]C (248+/-25 
[deg]F) minimizes this interference. Sections 6.1.7 and 8.1.5 will be 
revised to delete reference to other temperatures around the probe and 
filter holder during sampling as specified by the applicable subpart or 
approved by the Administrator for a particular application. Also, the 
error in ``. . . between 120 and 134 [deg]C (248 and 275 [deg]F . . 
.'') will be corrected to ``. . . between 120 and 134 [deg]C (248 and 
273 [deg]F . . .'') in section 8.1.6.

Y. Method 29 of Appendix A-8 to Part 60

    In Method 29, section 8.2.9.3 will be revised to require rinsing 
impingers containing permanganate with hydrogen chloride (HCl) to 
ensure consistency with the application of Method 29 across various 
stationary source categories and since there is evidence that HCl is 
needed to release the mercury (Hg) bound in the precipitate from the 
permanganate. Sections 10.4 and 10.5 will be added to require 
calibration of the balance used to weigh impingers and to require a 
multipoint calibration of the analytical balance.

Z. Method 30A of Appendix A-8 to Part 60

    In Method 30A, the heading of section 8.1 will be changed from 
``Sample Point Selection.'' to ``Selection of Sampling Sites and 
Sampling Points.''

AA. Method 30B of Appendix A-8 to Part 60

    In Method 30B, the heading of section 8.1 will be changed from 
``Sample Point Selection.'' to ``Selection of Sampling Sites and 
Sampling Points.'' In section 8.3.3.8, the reference to ASTM WK223 will 
be changed to ASTM D6911-15. ASTM WK223 was the draft standard that was 
available at the time that Method 30B was first promulgated; it has 
since been finalized to ASTM D6911-15.

BB. Appendix B to Part 60--Performance Specifications

    In the index to appendix B to part 60, Performance Specification 
16--Specifications and Test Procedures for Predictive Emission 
Monitoring Systems in Stationary Sources will be added.

CC. Performance Specification 1 of Appendix B to Part 60

    In Performance Specification 1, paragraph 8.1(2)(i) will be revised 
to not limit the location of a continuous opacity monitoring system 
(COMS) to a point at least four duct diameters downstream and two duct 
diameters upstream from a control device or flow disturbance, but it 
will refer to paragraphs 8.1(2)(ii) and 8.1(2)(iii) for additional 
options.

DD. Performance Specification 2 of Appendix B to Part 60

    In Performance Specification 2, the definition of span value will 
be revised in section 3.11. Also, in section 6.1.1, the data recorder 
language will be revised. In section 16.3.2, the characters 
``|dverbar'' will be replaced with d, which is the average 
difference between responses and the concentration/responses. In 
section 18, Table 2-2 and Figure 2-1 are attached to each other. Table 
2-2 will be detached from Figure 2-1, and the figure will be labeled 
``Calibration Drift Determination.''

EE. Performance Specification 3 of Appendix B to Part 60

    In Performance Specification 3, we will revise section 13.2 to 
clarify how to calculate relative accuracy.

FF. Performance Specification 4A of Appendix B to Part 60

    In Performance Specification 4A, we will revise the response time 
test procedure in sections 8.3 and 8.3.1. The language specifying that 
the response time is a check of the entire system was previously 
deleted. However, we have had several inquiries about this, and we 
believe that the entire system should be checked with the response time 
test procedure; therefore, we will put this requirement back into the 
performance specification. We will also revise section 13.3 because we 
have received information indicating that the response time of 1.5 
minutes is too stringent; we will relax the response time requirement 
to 2.0 minutes.

GG. Performance Specification 11 of Appendix B to Part 60

    In Performance Specification 11, equations 11-1 and 11-2 will be 
revised in section 12.1, and the response range will be used in lieu of 
the upscale value in section 13.1.

HH. Performance Specification 15 of Appendix B to Part 60

    In Performance Specification 15, the statement ``An audit sample is 
obtained from the Administrator'' will be deleted from paragraph 9.1.2. 
Also, in Performance Specification 15, reserved sections 14.0 and 15.0 
will be added.

II. Performance Specification 16 of Appendix B to Part 60

    In Performance Specification 16, we will change Table 16-1 to make 
be consistent with conventional statistical applications; the two 
columns currently labeled ``n-1'' will be re-labeled ``n.'' We will 
also revise section 12.2.3 for selection of n-1 degrees of freedom.

JJ. Procedure 2 of Appendix F to Part 60

    In Procedure 2, equations 2-2 and 2-3 in section 12.0 will be 
revised to correctly define the denominator when calculating 
calibration drift. Also, equation 2-4 in section 12.0 will be revised 
to correctly define the denominator when calculating accuracy.

KK. General Provisions (Subpart A) Part 61

    Section 61.13(e)(1)(i) of the General Provisions of Part 61 will be 
revised to add Methods 30A and 30B to the list of methods not requiring 
the use of audit samples. Consistent with the criteria used in 
establishing the original list of methods for which no audit samples 
are required (75 FR 55636), Method 30A is an instrumental test method 
that already has sufficient calibration and QA requirements. Method 30B 
has sufficient performance-based QA measures including analysis of an 
independent calibration standard with each set of field samples.

LL. Method 107 of Appendix B to Part 61

    In Method 107, the term ``Geon'' will be deleted from the heading 
in section 11.7.3.

[[Page 54150]]

MM. General Provisions (Subpart A) Part 63

    The General Provisions of part 63, Sec.  63.7(c)(2)(iii)(A) will be 
revised to add Methods 30A and 30B to the list of methods not requiring 
the use of audit samples. Consistent with the criteria used in 
establishing the original list of methods for which no audit samples 
are required (75 FR 55636), Method 30A will be added because it is an 
instrumental test method that already has sufficient calibration and QA 
requirements, and Method 30B will be added because it has sufficient 
performance-based QA measures including analysis of an independent 
calibration standard with each set of field samples.
    Also in the General Provisions of part 63, Sec.  63.7(g)(2) will be 
revised to require the reporting of specific emissions test data in 
test reports. These data elements will be required regardless of 
whether the report is submitted electronically or in paper format. We 
will make these revisions to ensure that emissions test reporting 
includes all data necessary to assess and assure the quality of the 
reported emissions data and appropriately describes and identifies the 
specific unit covered by the emissions test report.

NN. Method 320 of Appendix A to Part 63

    In Method 320, sections 13.1, 13.4, and 13.4.1 will be revised to 
indicate the correct Method 301 reference.

IV. Request for Comments

    The Agency is reviewing the adequacy of its current test methods in 
regard to sampling site selection and sampling point requirements. 
Emission gas flow patterns affect representative testing, and this is 
not addressed in many EPA test methods. Method 1 contains provisions 
for sampling point locations, traversing, and determination of cyclonic 
flow, and Method 7E was revised to contain procedures for determining 
gaseous stratification in 2006. However, there are currently no 
requirements in most methods for gaseous compounds to follow the Method 
1 or 7E procedures.
    Method 7E allows stratification to be assessed through either a 3- 
or 12-point traverse while measuring variations in either a pollutant 
or diluent concentration. The degree of stratification determines 
whether a single-point, 3-point, or 12-point traverse is used for the 
emissions test. There are no requirements to check for cyclonic flow in 
Method 7E.
    We have some information that suggests deficiencies exist in the 3-
point test in a number of cases and that at least a 5-point, dual axis 
test should be required. A summary of this information has been 
included in the docket for this action. We are also reconsidering the 
appropriateness of measuring variations in a diluent gas for the test 
instead of the regulated pollutant.
    In this rule, we propose to update the General Provisions of parts 
60, 61, and 63 to include evaluations of gas stratification and 
cyclonic flow with all compliance tests. The Agency solicits comments 
and data to aid in establishing effective and equitable procedures.
    The Agency also requests comments on the proposed changes to the 
response time test in Performance Specification 4A. The Agency has 
received some information to suggest that a system response time test 
criteria of less than two minutes may be difficult to accomplish. 
Therefore, the Agency solicits comments and data to assist in 
establishing appropriate criteria.

V. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review and Executive 
Order 13563: Improving Regulation and Regulatory Review

    This action is not a ``significant regulatory action'' under the 
terms of Executive Order (E.O.) 12866 (58 FR 51735, October 4, 1993) 
and is, therefore, not subject to review under Executive Orders 12866 
and 13563 (76 FR 3821, January 21, 2011).

B. Paperwork Reduction Act (PRA)

    This action does not impose an information collection burden under 
the PRA. The amendments being proposed in this action to the test 
methods, performance specifications, and testing regulations do not add 
information collection requirements but make corrections and updates to 
existing testing methodology. In addition, the proposed amendments 
clarify performance testing requirements.

C. Regulatory Flexibility Act (RFA)

    I certify that this action will not have a significant economic 
impact on a substantial number of small entities under the RFA. In 
making this determination, the impact of concern is any significant 
adverse economic impact on small entities. An agency may certify that a 
rule will not have a significant economic impact on a substantial 
number of small entities if the rule relieves regulatory burden, has no 
net burden or otherwise has a positive economic effect on the small 
entities subject to the rule. This proposed rule will not impose 
emission measurement requirements beyond those specified in the current 
regulations, nor does it change any emission standard. We have, 
therefore, concluded that this action will have no net regulatory 
burden for all directly regulated small entities.

D. Unfunded Mandates Reform Act (UMRA)

    This action does not contain any unfunded mandate as described in 
UMRA, 2 U.S.C. 1531-1538, and does not significantly or uniquely affect 
small governments. The action imposes no enforceable duty on any state, 
local or tribal governments or the private sector.

E. Executive Order 13132: Federalism

    This action does not have federalism implications. It will not have 
substantial direct effects on the states, on the relationship between 
the national government and the states, or on the distribution of power 
and responsibilities among the various levels of government.

F. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This action does not have tribal implications, as specified in 
Executive Order 13175. This action simply corrects and updates existing 
testing regulations. Thus, Executive Order 13175 does not apply to this 
action.

G. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    The EPA interprets Executive Order 13045 as applying only to those 
regulatory actions that concern environmental health or safety risks 
that the EPA has reason to believe may disproportionately affect 
children, per the definition of ``covered regulatory action'' in 
section 2-202 of the Executive Order. This action is not subject to 
Executive Order 13045 because it does not concern an environmental 
health risk or safety risk.

H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution or Use

    This action is not subject to Executive Order 13211, because it is 
not a significant regulatory action under Executive Order 12866.

I. National Technology Transfer and Advancement Act and 1 CFR Part 51

    This action involves technical standards. The EPA proposes to use

[[Page 54151]]

ASTM D6911-15 for packaging and shipping samples in Method 30B. The 
ASTM D6911-15 standard provides guidance on the selection of procedures 
for proper packaging and shipment of environmental samples to the 
laboratory for analysis to ensure compliance with appropriate 
regulatory programs and protection of sample integrity during shipment.
    The EPA proposes to use ASTM E617-13 for laboratory weights and 
precision mass standards in Methods 4, 5, 5H, 5I, 29, and 202. The ASTM 
E617-13 standard covers weights and mass standards used in laboratories 
for specific classes.
    The ASTM D6911-15 and ASTM E617-13 standards were developed and 
adopted by the American Society for Testing and Materials (ASTM). These 
standards may be obtained from http://www.astm.org or from the ASTM at 
100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

J. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    The EPA believes the human health or environmental risk addressed 
by this action will not have potential disproportionately high and 
adverse human health or environmental effects on minority, low-income 
or indigenous populations because it does not affect the level of 
protection provided to human health or the environment.

List of Subjects

40 CFR Part 51

    Environmental protection, Air pollution control, Performance 
specifications, Test methods and procedures.

40 CFR Part 60

    Environmental protection, Air pollution control, Incorporation by 
reference, Performance specifications, Test methods and procedures.

40 CFR Parts 61 and 63

    Environmental protection, Air pollution control, Performance 
specifications, Test methods and procedures.

    Dated: August 14, 2015.
Gina McCarthy,
Administrator.

    For the reasons stated in the preamble, the Environmental 
Protection Agency proposes to amend title 40, chapter I of the Code of 
Federal Regulations as follows:

PART 51--REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF 
IMPLEMENTATION PLANS

0
1. The authority citation for part 51 continues to read as follows:

    Authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.

0
2. Revise section 4.0 a. of appendix M to part 51 to read as follows:

Appendix M to Part 51--Recommended Test Methods for State 
Implementation Plans

* * * * *
    4.0 * * *
    a. The source owner, operator, or representative of the tested 
facility shall obtain an audit sample, if commercially available, 
from an AASP for each test method used for regulatory compliance 
purposes. No audit samples are required for the following test 
methods: Methods 3A and 3C of appendix A-3 of part 60 of this 
chapter, Methods 6C, 7E, 9, and 10 of appendix A-4 of part 60, 
Methods 18 and 19 of appendix A-6 of part 60, Methods 20, 22, and 
25A of appendix A-7 of part 60, Methods 30A and 30B of appendix A-8 
of part 60, and Methods 303, 318, 320, and 321 of appendix A of part 
63 of this chapter. If multiple sources at a single facility are 
tested during a compliance test event, only one audit sample is 
required for each method used during a compliance test. The 
compliance authority responsible for the compliance test may waive 
the requirement to include an audit sample if they believe that an 
audit sample is not necessary. ``Commercially available'' means that 
two or more independent AASPs have blind audit samples available for 
purchase. If the source owner, operator, or representative cannot 
find an audit sample for a specific method, the owner, operator, or 
representative shall consult the EPA Web site at the following URL, 
http://www.epa.gov/ttn/emc, to confirm whether there is a source 
that can supply an audit sample for that method. If the EPA Web site 
does not list an available audit sample at least 60 days prior to 
the beginning of the compliance test, the source owner, operator, or 
representative shall not be required to include an audit sample as 
part of the quality assurance program for the compliance test. When 
ordering an audit sample, the source owner, operator, or 
representative shall give the sample provider an estimate for the 
concentration of each pollutant that is emitted by the source or the 
estimated concentration of each pollutant based on the permitted 
level and the name, address, and phone number of the compliance 
authority. The source owner, operator, or representative shall 
report the results for the audit sample along with a summary of the 
emission test results for the audited pollutant to the compliance 
authority and shall report the results of the audit sample to the 
AASP. The source owner, operator, or representative shall make both 
reports at the same time and in the same manner or shall report to 
the compliance authority first and then report to the AASP. If the 
method being audited is a method that allows the samples to be 
analyzed in the field, and the tester plans to analyze the samples 
in the field, the tester may analyze the audit samples prior to 
collecting the emission samples provided a representative of the 
compliance authority is present at the testing site. The tester may 
request and the compliance authority may grant a waiver to the 
requirement that a representative of the compliance authority must 
be present at the testing site during the field analysis of an audit 
sample. The source owner, operator, or representative may report the 
results of the audit sample to the compliance authority and then 
report the results of the audit sample to the AASP prior to 
collecting any emission samples. The test protocol and final test 
report shall document whether an audit sample was ordered and 
utilized and the pass/fail results as applicable.
* * * * *

0
3. Revise section 12.5 equations 8 and 9 in Method 201A of appendix M 
to part 51 to read as follows:

Appendix M to Part 51--Recommended Test Methods for State 
Implementation Plans

* * * * *

Method 201A--Determination of PM10 and PM2.5 
Emissions From Stationary Sources (Constant Sampling Rate Procedure)

* * * * *

12.0 Calculations and Data Analysis

* * * * *
    12.5 * * *
    For Nre less than 3,162:
    [GRAPHIC] [TIFF OMITTED] TP08SE15.000
    
    For Nre greater than 3,162:

[[Page 54152]]

[GRAPHIC] [TIFF OMITTED] TP08SE15.001

* * * * *
0
4. In Method 202 of appendix M to part 51:
0
a. Add sections 3.8, 10.3, 10.4, 11.2.2.1, 11.2.2.2, 11.2.2.3, 
11.2.2.4, and Figure 7 to section 18.0.
0
b. Revise sections 8.5.4.3 and 9.10.
    The additions and revisions read as follows:

Appendix M to Part 51--Recommended Test Methods for State 
Implementation Plans

* * * * *
    Method 202--Dry Impinger Method for Determining Condensable 
Particulate Emissions From Stationary Sources
* * * * *

3.0 Definitions

* * * * *
    3.8 ASTM E617-13. ASTM E617-13 ``Standard Specification for 
Laboratory Weights and Precisions Mass Standards'' was developed and 
adopted by the American Society for Testing and Materials (ASTM). 
The standards cover weights and mass standards used in laboratories 
for specific classes. The ASTM E617-13 standard has been approved 
for incorporation by reference by the Director of the Office of the 
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 
51. The standard may be obtained from http://www.astm.org or from 
the ASTM at 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, 
PA 19428-2959.
* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.5.4.3 CPM Container #2, Organic rinses. Follow the water 
rinses of the back half of the filterable PM filer holder, probe 
extension, condenser, each impinger and all of the connecting 
glassware and front half of the CPM filter with an acetone rinse.
* * * * *

9.0 Quality Control

* * * * *
    9.10 Field Train Recovery Blank. You must recover a minimum of 
one field train blank for each source category tested at the 
facility. You must recover the field train blank after the first or 
second run of the test. You must assemble the sampling train as it 
will be used for testing. Prior to the purge, you must add 100 ml of 
water to the first impinger and record this data on Figure 4. You 
must purge the assembled train as described in Section 8.5.3. You 
must recover field train blank samples as described in Section 
8.5.4. From the field sample weight, you will subtract the 
condensable particulate mass you determine with this blank train or 
0.002 g (2.0 mg), whichever is less.
* * * * *

10.0 Calibration and Standardization

* * * * *
    10.3 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers with ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
Class 3 tolerance (or better) weight of at least 500g or within 50g 
of a loaded impinger weight. Daily before use, the field balance 
must measure the weight within  0.5 g of the certified 
mass. If the daily balance calibration check fails, perform 
corrective measures and repeat check before use of balance.
    10.4 Analytical Balance Calibration. Perform a multipoint 
calibration (at least five points spanning the operational range) of 
the analytical balance before the first use and semiannually, 
thereafter. The calibration of the analytical balance must be 
conducted using ASTM E617-13 ``Standard Specification for Laboratory 
Weights and Precision Mass Standards'' Class 2 (or better) tolerance 
weights. Audit the balance each day it is used for gravimetric 
measurements by weighing at least one ASTM E617-13 Class 2 tolerance 
(or better) calibration weight that corresponds to 50 to 150 percent 
of the weight of one filter or 5 g. If the scale cannot reproduce 
the value of the calibration weight to within 0.5 mg of the 
certified mass, perform corrective measures, and conduct the 
multipoint calibration before use.

11.0 Analytical Procedures

* * * * *
    11.2.2 * * *
    11.2.2.1 Determine the inorganic fraction weight. Transfer the 
aqueous fraction from the extraction to a clean 500-ml or smaller 
beaker. Evaporate to no less than 10 ml liquid on a hot plate or in 
the oven at 105 [deg]C and allow to dry at room temperature (not to 
exceed 30 [deg]C (85[emsp14][deg]F)). You must ensure that water and 
volatile acids have completely evaporated before neutralizing 
nonvolatile acids in the sample. Following evaporation, desiccate 
the residue for 24 hours in a desiccator containing anhydrous 
calcium sulfate. Weigh at intervals of at least 6 hours to a 
constant weight. (See Section 3.0 for a definition of Constant 
weight.) Report results to the nearest 0.1 mg on the CPM Work Table 
(see Figure 6 of Section 18) and proceed directly to Section 11.2.3. 
If the residue cannot be weighed to constant weight, re-dissolve the 
residue in 100 ml of deionized distilled ultra-filtered water that 
contains 1 ppmw (1 mg/L) residual mass or less and continue to 
Section 11.2.2.2.
    11.2.2.2 Use titration to neutralize acid in the sample and 
remove water of hydration. If used, calibrate the pH meter with the 
neutral and acid buffer solutions. Then titrate the sample with 0.1N 
NH4OH to a pH of 7.0, as indicated by the pH meter or colorimetric 
indicator. Record the volume of titrant used on the CPM Work Table 
(see Figure 6 of Section 18).
    11.2.2.3 Using a hot plate or an oven at 105 [deg]C, evaporate 
the aqueous phase to approximately 10 ml. Quantitatively transfer 
the beaker contents to a clean, 50-ml pre-tared weighing tin and 
evaporate to dryness at room temperature (not to exceed 30 [deg]C 
(85 [deg]F)) and pressure in a laboratory hood. Following 
evaporation, desiccate the residue for 24 hours in a desiccator 
containing anhydrous calcium sulfate. Weigh at intervals of at least 
6 hours to a constant weight. (See Section 3.0 for a definition of 
Constant weight.) Report results to the nearest 0.1 mg on the CPM 
Work Table (see Figure 6 of Section 18).
    11.2.2.4 Calculate the correction factor to subtract the 
NH4\+\ retained in the sample using Equation 1 in Section 
12.
* * * * *

18.0 Tables, Diagrams, Flowcharts, and Validation Data

* * * * *
BILLING CODE 6560-50-P

[[Page 54153]]

[GRAPHIC] [TIFF OMITTED] TP08SE15.002

BILLING CODE 6560-50-C
* * * * *

0
5. Revise sections 3.3 and 5.1.3 of appendix P to part 51 to read as 
follows:

Appendix P to Part 51--Minimum Emission Monitoring Requirements

* * * * *

    3.3 Calibration Gases. For nitrogen oxides monitoring systems 
installed on fossil fuel-fired steam generators, the pollutant gas 
used to prepare calibration gas mixtures (Section 6.1, Performance 
Specification 2, appendix B, part 60 of this chapter) shall be 
nitric oxide (NO). For nitrogen oxides monitoring systems, installed 
on nitric acid plants the pollutant gas used to prepare calibration 
gas mixtures (Section 6.1, Performance Specification 2, appendix B, 
part 60) shall be nitrogen dioxide (NO2). These gases 
shall also be used for daily checks under paragraph 3.7 of this 
appendix as applicable. For sulfur dioxide monitoring systems 
installed on fossil fuel-fired steam generators or sulfuric acid 
plants, the pollutant gas used to prepare calibration gas mixtures 
(Section 6.1, Performance Specification 2, appendix B, part 60) 
shall be sulfur dioxide (SO2). Span and zero gases should 
be traceable to National Bureau of Standards reference gases 
whenever these reference gases are available. Every 6 months from 
date of manufacture, span and zero gases shall be reanalyzed by 
conducting triplicate analyses using the reference methods in 
appendix A, part 60, as follows: For SO2, use Reference 
Method 6; for nitrogen oxides, use Reference Method 7; and for 
carbon dioxide or oxygen, use Reference Method 3. The gases may be 
analyzed at less

[[Page 54154]]

frequent intervals if longer shelf lives are guaranteed by the 
manufacturer.
* * * * *
    5.1.3 The values used in the equations under paragraph 5.1 are 
derived as follows:
    E = pollutant emission, g/million cal (lb/million BTU),
    C = pollutant concentration, g/dscm (lb/dscf), determined by 
multiplying the average concentration (ppm) for each hourly period 
by 4.16x10-5 M g/dscm per ppm (2.64x 10-9 M 
lb/dscf per ppm) where M = pollutant molecular weight, g/g-mole (lb/
lb-mole). M = 64 for sulfur dioxide and 46 for oxides of nitrogen.
    %O2, %CO2 = Oxygen or carbon dioxide 
volume (expressed as percent) determined with equipment specified 
under paragraphs 3.1.4 and 3.1.5 of this appendix.
* * * * *

PART 60--STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES

0
6. The authority citation for part 60 continues to read as follows:

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

0
7. In Sec.  60.8, revise paragraph (f) to read as follows:


Sec.  60.8  Performance tests.

* * * * *
    (f) Unless otherwise specified in the applicable subpart, each 
performance test shall consist of three separate runs using the 
applicable test method.
    (1) Each run shall be conducted for the time and under the 
conditions specified in the applicable standard. For the purpose of 
determining compliance with an applicable standard, the arithmetic 
means of results of the three runs shall apply. In the event that a 
sample is accidentally lost or conditions occur in which one of the 
three runs must be discontinued because of forced shutdown, failure of 
an irreplaceable portion of the sample train, extreme meteorological 
conditions, or other circumstances, beyond the owner or operator's 
control, compliance may, upon the Administrator's approval, be 
determined using the arithmetic mean of the results of the two other 
runs.
    (2) Contents of report (electronic or paper submitted copy). Unless 
otherwise specified in a relevant standard or test method, or as 
otherwise approved by the Administrator in writing, results of a 
performance test shall include general identification information for 
the facility including a mailing address, the actual address, the owner 
or operator or responsible official (where they are applicable) or an 
appropriate representative and an email address for this person, and 
the appropriate Federal Registry System (FRS) number for the facility; 
the purpose of the test including the regulation requiring the test, 
the pollutant being measured, the units of the standard or the 
pollutant emissions units, and any process parameter component; a brief 
process description; a complete unit description, including a 
description of feed streams and control devices, the appropriate source 
classification code (SCC), and the latitude and longitude of the 
emission point being tested, and the permitted maximum process rate 
(where applicable); sampling site description; description of sampling 
and analysis procedures and any modifications to standard procedures; 
quality assurance procedures; record of operating conditions, including 
operating parameters for which limits are being set, 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; chain-of-custody documentation; explanation of laboratory 
data qualifiers; example calculations of all applicable stack gas 
parameters, emission rates, percent reduction rates, and analytical 
results, as applicable; identification information for the company 
conducting the performance test including a contact person and his/her 
email address; and any other information required by the test method, a 
relevant standard, or the Administrator.
* * * * *
0
8. In Sec.  60.17:
0
a. Redesignate paragraphs (g)(202) through (206) as (g)(204) through 
(208).
0
b. Redesignate paragraphs (g)(200) and (201) as (g)(202) and (203).
0
c. Redesignate paragraph (g)(199) as (g)(200).
0
d. Redesignate paragraph (g)(198) as (g)(199).
0
e. Redesignate paragraph (g)(197) as (g)(198).
0
f. Redesignate paragraph (g)(196) as (g)(197).
0
g. Redesignate paragraph (g)(195) as (g)(196).
0
h. Redesignate paragraph (g)(194) as (g)(195).
0
i. Redesignate paragraph (g)(193) as (g)(194).
0
j. Redesignate paragraph (g)(192) as (g)(193).
0
k. Redesignate paragraph (g)(191) as (g)(192).
0
l. Redesignate paragraph (g)(190) as (g)(191).
0
m. Add paragraphs (g)(190) and (g)(201).
    The additions read as follows:


Sec.  60.17  Incorporations by reference.

* * * * *
    (g) * * *
* * * * *
    (190) ASTM D6911-15, Standard Guide for Packaging and Shipping 
Environmental Samples for Laboratory Analysis, IBR approved for 
appendix A-8 to this part: Method 30B, section 8.3.3.8.
* * * * *
    (201) ASTM E617-13, Standard Specification for Laboratory Weights 
and Precision Mass Standards, IBR approved for appendix M to part 51 of 
this chapter: Method 202, sections 10.3 and 10.4; appendix A-3 to this 
part: Method 4, section 10.3; Method 5, sections 10.7 and 10.8, Method 
5H, sections 10.4 and 10.5, Method 5I, sections 10.7 and 10.8; and 
appendix A-8 to this part: Method 29, section 10.4.
* * * * *

Subpart JJJJ--Standards of Performance for Stationary Spark 
Ignition Internal Combustion Engines

0
9. Revise table 2 to subpart JJJJ of part 60 to read as follows:
    As stated in Sec.  60.4244, you must comply with the following 
requirements for performance tests within 10 percent of 100 percent 
peak (or the highest achievable) load:

[[Page 54155]]



                                         Table 2 to Subpart JJJJ of Part 60--Requirements for Performance Tests
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                         Complying with the                                                              According to the following
              For each                     requirement to               You must                   Using                        requirements
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Stationary SI internal combustion  a. limit the              i. Select the sampling    (1) Method 1 or 1A of    (a) Alternatively, for NOX, O2, and
 engine demonstrating compliance       concentration of NOX in   port location and the     40 CFR part 60,          moisture measurement, ducts <=6
 according to Sec.   60.4244.          the stationary SI         number/location of        appendix A-1, if         inches in diameter may be sampled at
                                       internal combustion       traverse points at the    measuring flow rate.     a single point located at the duct
                                       engine exhaust.           exhaust of the                                     centroid and ducts >6 and <=12
                                                                 stationary internal                                inches in diameter may be sampled at
                                                                 combustion engine;                                 3 traverse points located at 16.7,
                                                                                                                    50.0, and 83.3% of the measurement
                                                                                                                    line (`3-point long line'). If the
                                                                                                                    duct is >12 inches in diameter and
                                                                                                                    the sampling port location meets the
                                                                                                                    two and half-diameter criterion of
                                                                                                                    section 11.1.1 of Method 1 of 40 CFR
                                                                                                                    part 60, appendix A, the duct may be
                                                                                                                    sampled at `3-point long line';
                                                                                                                    otherwise, conduct the
                                                                                                                    stratification testing and select
                                                                                                                    sampling points according to section
                                                                                                                    8.1.2 of Method 7E of 40 CFR part
                                                                                                                    60, appendix A.
                                                                ii. Determine the O2      (2) Method 3, 3A, or     (b) Measurements to determine O2
                                                                 concentration of the      3B\b\ of 40 CFR part     concentration must be made at the
                                                                 stationary internal       60, appendix A-2 or      same time as the measurements for
                                                                 combustion engine         ASTM Method D6522-       NOX concentration.
                                                                 exhaust at the sampling   00(Reapproved
                                                                 port location;            2005)\a,c\.
                                                                iii. If necessary,        (3) Method 2 or 2C of    .....................................
                                                                 determine the exhaust     40 CFR part 60,
                                                                 flowrate of the           appendix A-1 or Method
                                                                 stationary internal       19 of 40 CFR part 60,
                                                                 combustion engine         appendix A-7.
                                                                 exhaust;
                                                                iv. If necessary,         (4) Method 4 of 40 CFR   (c) Measurements to determine
                                                                 measure moisture          part 60, appendix A-3,   moisture must be made at the same
                                                                 content of the            Method 320 of 40 CFR     time as the measurement for NOX
                                                                 stationary internal       part 63, appendix A,     concentration.
                                                                 combustion engine         or ASTM Method D 6348-
                                                                 exhaust at the sampling   03\c\.
                                                                 port location; and
                                                                v. Measure NOX at the     (5) Method 7E of 40 CFR  (d) Results of this test consist of
                                                                 exhaust of the            part 60, appendix A-4,   the average of the three 1-hour or
                                                                 stationary internal       ASTM Method D6522-00     longer runs.
                                                                 combustion engine; if     (Reapproved 2005)\a\,
                                                                 using a control device,   Method 320 of 40 CFR
                                                                 the sampling site must    part 63, appendix A,
                                                                 be located at the         or ASTM Method D 6348-
                                                                 outlet of the control     03\c\.
                                                                 device.
                                      b. limit the              i. Select the sampling    (1) Method 1 or 1A of    (a) Alternatively, for CO, O2, and
                                       concentration of CO in    port location and the     40 CFR part 60,          moisture measurement, ducts <=6
                                       the stationary SI         number/location of        appendix A-1, if         inches in diameter may be sampled at
                                       internal combustion       traverse points at the    measuring flow rate.     a single point located at the duct
                                       engine exhaust.           exhaust of the                                     centroid and ducts >6 and <=12
                                                                 stationary internal                                inches in diameter may be sampled at
                                                                 combustion engine;                                 3 traverse points located at 16.7,
                                                                                                                    50.0, and 83.3% of the measurement
                                                                                                                    line (`3-point long line'). If the
                                                                                                                    duct is >12 inches in diameter and
                                                                                                                    the sampling port location meets the
                                                                                                                    two and half-diameter criterion of
                                                                                                                    section 11.1.1 of Method 1 of 40 CFR
                                                                                                                    part 60, appendix A, the duct may be
                                                                                                                    sampled at `3-point long line';
                                                                                                                    otherwise, conduct the
                                                                                                                    stratification testing and select
                                                                                                                    sampling points according to section
                                                                                                                    8.1.2 of Method 7E of 40 CFR part
                                                                                                                    60, appendix A.

[[Page 54156]]

 
                                                                ii. Determine the O2      (2) Method 3, 3A, or     (b) Measurements to determine O2
                                                                 concentration of the      3B\b\ of 40 CFR part     concentration must be made at the
                                                                 stationary internal       60, appendix A-2 or      same time as the measurements for CO
                                                                 combustion engine         ASTM Method D6522-       concentration.
                                                                 exhaust at the sampling   00(Reapproved 2005)\a\
                                                                 port location;            \c\.
                                                                iii. If necessary,        (3) Method 2 or 2C of    .....................................
                                                                 determine the exhaust     40 CFR 60, appendix A-
                                                                 flowrate of the           1 or Method 19 of 40
                                                                 stationary internal       CFR part 60, appendix
                                                                 combustion engine         A-7.
                                                                 exhaust;
                                                                iv. If necessary,         (4) Method 4 of 40 CFR   (c) Measurements to determine
                                                                 measure moisture          part 60, appendix A-3,   moisture must be made at the same
                                                                 content of the            Method 320 of 40 CFR     time as the measurement for CO
                                                                 stationary internal       part 63, appendix A,     concentration.
                                                                 combustion engine         or ASTM Method D 6348-
                                                                 exhaust at the sampling   03\c\.
                                                                 port location; and
                                                                v. Measure CO at the      (5) Method 10 of 40 CFR  (d) Results of this test consist of
                                                                 exhaust of the            part 60, appendix A4,    the average of the three 1-hour or
                                                                 stationary internal       ASTM Method D6522-00     longer runs.
                                                                 combustion engine; if     (Reapproved 2005)\a\,
                                                                 using a control device,   Method 320 of 40 CFR
                                                                 the sampling site must    part 63, appendix A,
                                                                 be located at the         or ASTM Method D 6348-
                                                                 outlet of the control     03\c\.
                                                                 device.
                                      c. limit the              i. Select the sampling    (1) Method 1 or 1A of    (a) Alternatively, for VOC, O2, and
                                       concentration of VOC in   port location and the     40 CFR part 60,          moisture measurement, ducts <=6
                                       the stationary SI         number/location of        appendix A-1, if         inches in diameter may be sampled at
                                       internal combustion       traverse points at the    measuring flow rate.     a single point located at the duct
                                       engine exhaust.           exhaust of the                                     centroid and ducts >6 and <=12
                                                                 stationary internal                                inches in diameter may be sampled at
                                                                 combustion engine;                                 3 traverse points located at 16.7,
                                                                                                                    50.0, and 83.3% of the measurement
                                                                                                                    line (`3-point long line'). If the
                                                                                                                    duct is >12 inches in diameter and
                                                                                                                    the sampling port location meets the
                                                                                                                    two and half-diameter criterion of
                                                                                                                    section 11.1.1 of Method 1 of 40 CFR
                                                                                                                    part 60, appendix A, the duct may be
                                                                                                                    sampled at `3-point long line';
                                                                                                                    otherwise, conduct the
                                                                                                                    stratification testing and select
                                                                                                                    sampling points according to section
                                                                                                                    8.1.2 of Method 7E of 40 CFR part
                                                                                                                    60, appendix A.
                                                                ii. Determine the O2      (2) Method 3, 3A, or     (b) Measurements to determine O2
                                                                 concentration of the      3B\b\ of 40 CFR part     concentration must be made at the
                                                                 stationary internal       60, appendix A-2 or      same time as the measurements for
                                                                 combustion engine         ASTM Method D6522-       VOC concentration.
                                                                 exhaust at the sampling   00(Reapproved 2005)
                                                                 port location;            \a\ \c\.
                                                                iii. If necessary,        (3) Method 2 or 2C of    .....................................
                                                                 determine the exhaust     40 CFR 60, appendix A-
                                                                 flowrate of the           1 or Method 19 of 40
                                                                 stationary internal       CFR part 60, appendix
                                                                 combustion engine         A-7.
                                                                 exhaust;
                                                                iv. If necessary,         (4) Method 4 of 40 CFR   (c) Measurements to determine
                                                                 measure moisture          part 60, appendix A-3,   moisture must be made at the same
                                                                 content of the            Method 320 of 40 CFR     time as the measurement for VOC
                                                                 stationary internal       part 63, appendix A,     concentration.
                                                                 combustion engine         or ASTM Method D 6348-
                                                                 exhaust at the sampling   03\c\.
                                                                 port location; and

[[Page 54157]]

 
                                                                v. Measure VOC at the     (5) Method 25A of 40     (d) Results of this test consist of
                                                                 exhaust of the            CFR part 60, appendix    the average of the three 1-hour or
                                                                 stationary internal       A-7 or Method 25A with   longer runs.
                                                                 combustion engine; if     the use of a methane
                                                                 using a control device,   cutter as described in
                                                                 the sampling site must    40 CFR 1065.265.
                                                                 be located at the
                                                                 outlet of the control
                                                                 device.
                                                                vi. If necessary,         (6) Method 18 of 40 CFR  (e) Measurements to determine methane
                                                                 measure methane and/or    part 60, appendix A-6,   and/or ethane must be made at the
                                                                 ethane at the exhaust     Method 320 of 40 CFR     same time as the measurement for VOC
                                                                 of the stationary         part 63, appendix A,     concentration.
                                                                 internal combustion       or ASTM Method D 6348-
                                                                 engine; if using a        03\c\.
                                                                 control device, the
                                                                 sampling site must be
                                                                 located at the outlet
                                                                 of the control device.
--------------------------------------------------------------------------------------------------------------------------------------------------------
\a\ Also, you may petition the Administrator for approval to use alternative methods for portable analyzer.
\b\ You may use ASME PTC 19.10-1981, Flue and Exhaust Gas Analyses, for measuring the O2 content of the exhaust gas as an alternative to EPA Method 3B.
  AMSE PTC 19.10-1981 incorporated by reference, see 40 CFR 60.17.
\c\ Incorporated by reference; see 40 CFR 60.17.

0
10. In appendix A-1 to part 60:
0
a. Revise section 11.2.1.2 in Method 1.
0
b. Remove Figure 1-2 in section 17.0 after the table entitled ``Table 
1-1 Cross-Section Layout for Rectangular Stacks'' in Method 1.
0
c. Revise sections 6.7, 10.1.2.3, 10.1.3.4, 10.1.3.7, 10.1.4.1.3, 
10.1.4.3, and Figure 2-10 in section 17.0 in Method 2.
    The revisions read as follows:

Appendix A-1 to Part 60--Test Methods 1 through 2F

* * * * *

Method 1--Sample and Velocity Traverses for Stationary Sources

* * * * *

11.0 Procedure

* * * * *
    11.2.1.2 When the eight- and two-diameter criterion cannot be 
met, the minimum number of traverse points is determined from Figure 
1-1. Before referring to the figure, however, determine the 
distances from the measurement site to the nearest upstream and 
downstream disturbances, and divide each distance by the stack 
diameter or equivalent diameter, to determine the distance in terms 
of the number of duct diameters.
* * * * *

Method 2--Determination of Stack Gas Velocity and Volumetric Flow Rate 
(Type S Pitot Tube)

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.7 Calibration Pitot Tube. Calibration of the Type S pitot tube 
requires a standard Pitot tube for a reference.
* * * * *

10.0 Calibration and Standardization

* * * * *
    10.1.2.3 The flow system shall have the capacity to generate a 
test-section velocity around 910 m/min (3,000 ft/min). This velocity 
must be constant with time to guarantee constant and steady flow 
during the entire period of calibration. A centrifugal fan is 
recommended for this purpose, as no flow rate adjustment for back 
pressure of the fan is allowed during the calibration process. Note 
that Type S pitot tube coefficients obtained by single-velocity 
calibration at 910 m/min (3,000 ft/min) will generally be valid to 
3 percent for the measurement of velocities above 300 m/
min (1,000 ft/min) and to 6 percent for the measurement 
of velocities between 180 and 300 m/min (600 and 1,000 ft/min). If a 
more precise correlation between the pitot tube coefficient, (Cp), 
and velocity is desired, the flow system should have the capacity to 
generate at least four distinct, time-invariant test-section 
velocities covering the velocity range from 180 to 1,500 m/min (600 
to 5,000 ft/min), and calibration data shall be taken at regular 
velocity intervals over this range (see References 9 and 14 in 
section 17.0 for details).
* * * * *
    10.1.3.4 Read [Delta]pstd, and record its value in a 
data table similar to the one shown in Figure 2-9. Remove the 
standard pitot tube from the duct, and disconnect it from the 
manometer. Seal the standard entry port. Make no adjustment to the 
fan speed or other wind tunnel volumetric flow control device 
between this reading and the corresponding Type S pitot reading.
* * * * *
    10.1.3.7 Repeat Steps 10.1.3.3 through 10.1.3.6 until three 
pairs of [Delta]p readings have been obtained for the A side of the 
Type S pitot tube, with all the paired observations conducted at a 
constant fan speed (no changes to fan velocity between observed 
readings).
* * * * *
    10.1.4.1.3 For Type S pitot tube combinations with complete 
probe assemblies, the calibration point should be located at or near 
the center of the duct; however, insertion of a probe sheath into a 
small duct may cause significant cross-sectional area interference 
and blockage and yield incorrect coefficient values (Reference 9 in 
section 17.0). Therefore, to minimize the blockage effect, the 
calibration point may be a few inches off-center if necessary, but 
no closer to the outer wall of the wind tunnel than 4 inches. The 
maximum allowable blockage, as determined by a projected-area model 
of the probe sheath, is 2 percent or less of the duct cross-
sectional area (Figure 2-10a). If the pitot and/or probe assembly 
blocks more than 2 percent of the cross-sectional area at an 
insertion point only 4 inches inside the wind tunnel, the diameter 
of the wind tunnel must be increased.
* * * * *
    10.1.4.3 For a probe assembly constructed such that its pitot 
tube is always used in the same orientation, only one side of the 
pitot tube need be calibrated (the side which will face the flow). 
The pitot tube must still meet the alignment specifications of 
Figure 2-2 or 2-3, however, and must have an average

[[Page 54158]]

deviation ([sigma]) value of 0.01 or less (see section 12.4.4).
* * * * *

17.0 Tables, Diagrams, Flowcharts, and Validation Data
[GRAPHIC] [TIFF OMITTED] TP08SE15.003


 
 
 
  Figure 2-10. Projected-area models for typical pitot tube assemblies.
 

* * * * *

0
11. In appendix A-2 to part 60:
0
a. Revise sections 6.11.1, 6.11.2, 10.6.6, and 10.6.8 in Method 2G.
0
b. Revise section 6.3 in Method 3C.
0
c. Add sections 6.3.1, 6.3.2, 6.3.3, 6.3.4, and 6.3.5 in Method 3C.
    The revisions and additions read as follows:

Appendix A-2 to Part 60--Test Methods 2G through 3C

* * * * *

Method 2G--Determination of Stack Gas Velocity and Volumetric Flow Rate 
With Two-Dimensional Probes

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.11.1 Test section cross-sectional area. The flowing gas stream 
shall be confined within a circular, rectangular, or elliptical 
duct. The cross-sectional area of the tunnel must be large enough to 
ensure fully developed flow in the presence of both the calibration 
pitot tube and the tested probe. The calibration site, or ``test 
section,'' of the wind tunnel shall have a minimum diameter of 30.5 
cm (12 in.) for circular or elliptical duct cross-sections or a 
minimum width of 30.5 cm (12 in.) on the shorter side for 
rectangular cross-sections. Wind tunnels shall meet the probe 
blockage provisions of this section and the qualification 
requirements prescribed in section 10.1. The projected area of the 
portion of the probe head, shaft, and attached devices inside the 
wind tunnel during calibration shall represent no more than 2 
percent of the cross-sectional area of the tunnel. If the pitot and/
or probe assembly blocks more than 2 percent of the cross-sectional 
area at an insertion point only 4 inches inside the wind tunnel, the 
diameter of the wind tunnel must be increased.
    6.11.2 Velocity range and stability. The wind tunnel should be 
capable of achieving and maintaining a constant and steady velocity 
between 6.1 m/sec and 30.5 m/sec (20 ft/sec and 100 ft/sec) for the 
entire calibration period for each selected calibration velocity. 
The wind tunnel shall produce fully developed flow patterns that are 
stable and parallel to the axis of the duct in the test section.
* * * * *

10.0 Calibration

* * * * *
    10.6.6 Read the differential pressure from the calibration pitot 
tube ([Delta]Pstd), and record its value. Read the 
barometric pressure to within 2.5 mm Hg (0.1 
in. Hg) and the temperature in the wind tunnel to within 0.6[deg]C 
(1[emsp14][deg]F). Record these values on a data form similar to 
Table 2G-8. Record the rotational speed of the fan or indicator of 
wind tunnel volumetric flow and make no adjustment to fan speed or 
wind tunnel flow control between this observation and the Type S 
probe reading.
* * * * *
    10.6.8 Take paired differential pressure measurements with the 
calibration pitot tube and tested probe (according to sections 
10.6.6 and 10.6.7). The paired measurements in each replicate can be 
made either simultaneously (i.e., with both probes in the wind 
tunnel) or by alternating the measurements of the two probes (i.e., 
with only one probe at a time in the wind tunnel). Adjustments made 
to the fan speed or other changes to the system designed to change 
the air flow velocity of the wind tunnel between observation of the 
calibration pitot tube ([Delta]Pstd) and the Type S pitot 
tube invalidates the reading and the observation must be repeated.
* * * * *

Method 3C--Determination of Carbon Dioxide, Methane, Nitrogen, and 
Oxygen From Stationary Sources

* * * * *

6. Analysis

* * * * *
    6.3 Analyzer Linearity Check and Calibration. Perform this test 
before sample analysis.
    6.3.1 Using the gas mixtures in section 5.1, verify the detector 
linearity over the range of suspected sample concentrations with at 
least three concentrations per

[[Page 54159]]

compound of interest. This initial check may also serve as the 
initial instrument calibration.
    6.3.2 You may extend the use of the analyzer calibration by 
performing a single point calibration verification. Calibration 
verifications shall be performed by triplicate injections of a 
single-point standard gas. The concentration of the single-point 
calibration must either be at the midpoint of the calibration curve 
or at approximately the source emission concentration measured 
during operation of the analyzer.
    6.3.3 Triplicate injections must agree within 5 percent of their 
mean, and the average calibration verification point must agree 
within 10 percent of the initial calibration response factor. If 
these calibration verification criteria are not met, the initial 
calibration described in section 6.3.1, using at least three 
concentrations, must be repeated before analysis of samples can 
continue.
    6.3.4 For each instrument calibration, record the carrier and 
detector flow rates, detector filament and block temperatures, 
attenuation factor, injection time, chart speed, sample loop volume, 
and component concentrations.
    6.3.5 Plot a linear regression of the standard concentrations 
versus area values to obtain the response factor of each compound. 
Alternatively, response factors of uncorrected component 
concentrations (wet basis) may be generated using instrumental 
integration.

    Note:  Peak height may be used instead of peak area throughout 
this method.

* * * * *

0
12. In appendix A-3 to part 60:
0
a. Add sections 10.3 and 12.2.5 in Method 4.
0
b. Revise section 16.4 in Method 4.
0
c. Revise sections 6.1.1.9 and 8.7.6.2.5 in Method 5.
0
d. Add sections 10.7 and 10.8 in Method 5.
0
e. Add sections 10.4 and 10.5 in Method 5H.
0
f. Add sections 10.1 and 10.2 in Method 5I.
    The revisions and additions read as follows:

Appendix A-3 to Part 60--Test Methods 4 through 5I

* * * * *

Method 4--Determination of Moisture Content in Stack Gases

* * * * *

10.0 Calibration and Standardization

* * * * *
    10.3 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers using ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
(incorporated by reference--see 40 CFR 60.17) Class 3 tolerance (or 
better) weight of at least 500g or within 50g of a loaded impinger 
weight. Daily before use, the field balance must measure the weight 
within 0.5g of the certified mass. If the daily balance 
calibration check fails, perform corrective measures and repeat 
check before use of balance.
* * * * *

12.0 Data Analysis and Calculations

* * * * *
    12.2.5 Using F-factors to determine approximate moisture for 
estimating moisture content where no wet scrubber is being used, for 
the purpose of determining isokinetic sampling rate settings with no 
fuel sample is acceptable using the average Fc or 
Fd factor from Method 19 (see Method 19, section 12.3.1). 
If this option is selected, calculate the approximate moisture as 
follows:
BWS = BH + BA + BF
Where:
BA = Mole Fraction of moisture in the ambient air.
[GRAPHIC] [TIFF OMITTED] TP08SE15.004

BF = Mole fraction of moisture from free water in the 
fuel.
[GRAPHIC] [TIFF OMITTED] TP08SE15.005

BH <= Mole fraction of moisture from the hydrogen in the 
fuel.
[GRAPHIC] [TIFF OMITTED] TP08SE15.006

Bws = Mole fraction of moisture in the stack gas.
Fd = Volume of dry combustion components per unit of heat 
content at 0 percent oxygen, dscf/106
    Btu (scm/J). See Table 19-2 in Method 19.
Fw = Volume of wet combustion components per unit of heat 
content at 0 percent oxygen, wet
    scf/10\6\ Btu (scm/J). See Table 19-2 in Method 19.
%RH = Percent relative humidity (calibrated hydrometer acceptable), 
percent.
PBar = Barometric pressure, in. Hg.
T = Ambient temperature, [deg]F.
W = Percent free water by weight, percent.
O2 = Percent oxygen in stack gas, dry basis, percent.
* * * * *

16.0 Alternative Procedures

* * * * *
    16.4 Using F-factors to determine moisture is an acceptable 
alternative to Method 4 for a combustion stack not using a scrubber 
and where a fuel sample is taken during the test run and analyzed 
for development of an Fd factor (see Method 19, section 
12.3.2) and where stack O2 content is measured by Method 
3A or 3B during each test run.
    If this option is selected, calculate the moisture content as 
follows:
BWS = BH + BA + BF
Where:
BA = Mole fraction of moisture in the ambient air.

[[Page 54160]]

[GRAPHIC] [TIFF OMITTED] TP08SE15.007


    Note:  Values of BA should be between 0.00 and 0.06 
with common values being about 0.015.

BF = Mole fraction of moisture from free water in the 
fuel.
[GRAPHIC] [TIFF OMITTED] TP08SE15.008


    Note: Free water in fuel is minimal for distillate oil and 
gases, such as propane and natural gas, so this step may be omitted 
for those fuels.

BH = Mole fraction of moisture from the hydrogen in the 
fuel.
[GRAPHIC] [TIFF OMITTED] TP08SE15.009

Bws = Mole fraction of moisture in the stack gas.
Fd = Volume of dry combustion components per unit of heat 
content at 0 percent oxygen, dscf/10\6\ Btu (scm/J). Develop a test 
specific Fd value using an integrated fuel sample from 
each test run and Equation 19-3 in section 12.3.2 of Method 19.
FW = Volume of wet combustion components per unit of heat 
content at 0 percent oxygen, wet scf/10\6\ Btu (scm/J). Develop a 
test specific FW value using an integrated fuel sample 
from each test run and Equation 19-4 in section 12.3.2 of Method 19.
%RH = Percent relative humidity (calibrated hygrometer acceptable), 
percent.
PBar = Barometric pressure, in. Hg.
T = Ambient temperature, [deg]F.
W = Percent free water by weight, percent.
O2 = Percent oxygen in stack gas, dry basis, percent.
* * * * *

Method 5--Determination of Particulate Matter Emissions From Stationary 
Sources

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.1.1.9 Metering System. Vacuum gauge, leak-free pump, 
calibrated temperature sensors (rechecked at at least one point 
after each test), dry gas meter (DGM) capable of measuring volume to 
within 2 percent, and related equipment, as shown in Figure 5-1. 
Other metering systems capable of maintaining sampling rates within 
10 percent of isokinetic and of determining sample volumes to within 
2 percent may be used, subject to the approval of the Administrator. 
When the metering system is used in conjunction with a pitot tube, 
the system shall allow periodic checks of isokinetic rates.
* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.7.6.2.5 Clean the inside of the front half of the filter 
holder by rubbing the surfaces with a Nylon bristle brush and 
rinsing with acetone. Rinse each surface three times or more if 
needed to remove visible particulate. Make a final rinse of the 
brush and filter holder. Carefully rinse out the glass cyclone, also 
(if applicable). After all acetone washings and particulate matter 
have been collected in the sample container, tighten the lid on the 
sample container so that acetone will not leak out when it is 
shipped to the laboratory. Mark the height of the fluid level to 
allow determination of whether leakage occurred during transport. 
Label the container to identify clearly its contents.
* * * * *

10.0 Calibration and Standardization

* * * * *
    10.7 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers using ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
(incorporated by reference--see 40 CFR 60.17) Class 3 tolerance (or 
better) weight of at least 500g or within 50g of a loaded impinger 
weight. Daily before use, the field balance must measure the weight 
within 0.5g of the certified mass. If the daily balance 
calibration check fails, perform corrective measures and repeat 
check before use of balance.
    10.8 Analytical Balance Calibration. Perform a multipoint 
calibration (at least five points spanning the operational range) of 
the analytical balance before the first use and semiannually, 
thereafter. The calibration of the analytical balance must be 
conducted using ASTM E617-13 ``Standard Specification for Laboratory 
Weights and Precision Mass Standards'' (incorporated by reference--
see 40 CFR 60.17) Class 2 (or better) tolerance weights. Audit the 
balance each day it is used for gravimetric measurements by weighing 
at least one ASTM E617-13 Class 2 tolerance (or better) calibration 
weight) that corresponds to 50 to 150 percent of the weight of one 
filter or 5g. If the scale cannot reproduce the value of the 
calibration weight to within 0.5 mg of the certified mass, perform 
corrective measures, and conduct the multipoint calibration before 
use.
* * * * *

Method 5H--Determination of Particulate Matter Emissions From Wood 
Heaters From a Stack Location

* * * * *

10.0 Calibration and Standardization

* * * * *
    10.4 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers using ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
(incorporated by reference--see 40 CFR 60.17) Class 3 tolerance (or 
better) weight of at least 500g or within 50g of a loaded impinger 
weight. Daily before use, the field balance must measure the weight 
within  0.5g of the certified mass. If the daily balance 
calibration check fails, perform corrective measures and repeat 
check before use of balance.
    10.5 Analytical Balance Calibration. Perform a multipoint 
calibration (at least five points spanning the operational range) of 
the analytical balance before the first use and semiannually, 
thereafter. The calibration of the analytical balance must be 
conducted using ASTM E617-13 ``Standard Specification for Laboratory 
Weights and Precision Mass Standards'' (incorporated by reference--
see 40 CFR 60.17) Class 2 (or better) tolerance weights. Audit the 
balance each day it is used for gravimetric measurements by weighing 
at least one ASTM E617-13 Class 2 tolerance (or better) calibration 
weight that corresponds to 50 to 150 percent of the weight of one 
filter or 5g. If the scale cannot reproduce the value of the 
calibration weight to within 0.5 mg of the certified mass, perform 
corrective measures, and conduct the multipoint calibration before 
use.
* * * * *

[[Page 54161]]

Method 5I--Determination of Low Level Particulate Matter Emissions From 
Stationary Sources

* * * * *

10. Calibration and Standardization Same as Method 5, Section 5

    10.1 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers using ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
(incorporated by reference--see 40 CFR 60.17) Class 3 tolerance (or 
better) weight of at least 500g or within 50g of a loaded impinger 
weight. Daily before use, the field balance must measure the weight 
within 0.5g of the certified mass. If the daily balance 
calibration check fails, perform corrective measures and repeat 
check before use of balance.
    10.2 Analytical Balance Calibration. Perform a multipoint 
calibration (at least five points spanning the operational range) of 
the analytical balance before the first use and semiannually, 
thereafter. The calibration of the analytical balance must be 
conducted using ASTM E617-13 ``Standard Specification for Laboratory 
Weights and Precision Mass Standards'' (incorporated by reference--
see 40 CFR 60.17) Class 2 (or better) tolerance weights. Audit the 
balance each day it is used for gravimetric measurements by weighing 
at least one ASTM E617-13 Class 2 tolerance (or better) calibration 
weight that corresponds to 50 to 150 percent of the weight of one 
filter or 5g. If the scale cannot reproduce the value of the 
calibration weight to within 0.5 mg of the certified mass, perform 
corrective measures, and conduct the multipoint calibration before 
use.
* * * * *
0
13. In appendix A-4 to part 60:
0
a. Revise section 8.3 in Method 6C.
0
b. Revise sections 8.1.2, 8.2.7 introductory text, and 12.8 in Method 
7E.
0
c. Revise sections 6.2.5 and 8.4.2 in Method 10.
0
d. Add section 6.2.6 in Method 10.
0
e. Revise sections 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 8.1, 8.2.1 and 
8.2.3 in Method 10A.
0
f. Add section 6.1.11 in Method 10A.
0
g. Revise section 6.1 in Method 10B.
    The revisions and additions read as follows:

Appendix A-4 to Part 60--Test Methods 6 Through 10B

* * * * *

Method 6C--Determination of Sulfur Dioxide Emissions From Stationary 
Sources (Instrumental Analyzer Procedure)

* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.3 Interference Check. You must follow the procedures of 
section 8.2.7 of Method 7E to conduct an interference check, 
substituting SO2 for NOX as the method 
pollutant. For dilution-type measurement systems, you must use the 
alternative interference check procedure in section 16 and a co-
located, unmodified Method 6 sampling train.
* * * * *

Method 7E--Determination of Nitrogen Oxides Emissions From Stationary 
Sources (Instrumental Analyzer Procedure)

* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.1.2 Determination of Stratification. Perform a stratification 
test at each test site to determine the appropriate number of sample 
traverse points. If testing for multiple pollutants or diluents at 
the same site, a stratification test using only one pollutant or 
diluent satisfies this requirement. A stratification test is not 
required for small stacks that are less than 4 inches in diameter. 
To test for stratification, use a probe of appropriate length to 
measure the NOX (or pollutant of interest) concentration 
at twelve traverse points located according to Table 1-1 or Table 1-
2 of Method 1. Alternatively, you may measure at three points on a 
line passing through the centroidal area. Space the three points at 
16.7, 50.0, and 83.3 percent of the measurement line. Sample for a 
minimum of twice the system response time (see section 8.2.6) at 
each traverse point. Calculate the individual point and mean 
NOX concentrations. If the concentration at each traverse 
point differs from the mean concentration for all traverse points by 
no more than: (a)  5.0 percent of the mean 
concentration; or (b)  0.5 ppm (whichever is less 
restrictive), the gas stream is considered unstratified and you may 
collect samples from a single point that most closely matches the 
mean. If the 5.0 percent or 0.5 ppm criterion is not met, but the 
concentration at each traverse point differs from the mean 
concentration for all traverse points by not more than: (a) 10.0 percent of the mean; or (b) 1.0 ppm 
(whichever is less restrictive), the gas stream is considered to be 
minimally stratified, and you may take samples from three points. 
Space the three points at 16.7, 50.0, and 83.3 percent of the 
measurement line. Alternatively, if a twelve-point stratification 
test was performed and the emissions were shown to be minimally 
stratified (all points within  10.0 percent of their 
mean or within  1.0 ppm), and if the stack diameter (or 
equivalent diameter, for a rectangular stack or duct) is greater 
than 2.4 meters (7.8 ft), then you may use 3-point sampling and 
locate the three points along the measurement line exhibiting the 
highest average concentration during the stratification test, at 
0.4, 1.2 and 2.0 meters from the stack or duct wall. If the gas 
stream is found to be stratified because the 10.0 percent or 1.0 ppm 
criterion for a 3-point test is not met, locate twelve traverse 
points for the test in accordance with Table 1-1 or Table 1-2 of 
Method 1.
* * * * *
    8.2.7 Interference Check. Conduct an interference response test 
of the gas analyzer prior to its initial use in the field. If you 
have multiple analyzers of the same make and model, you need only 
perform this alternative interference check on one analyzer. You may 
also meet the interference check requirement if the instrument 
manufacturer performs this or a similar check on an analyzer of the 
same make and model of the analyzer that you use and provides you 
with documented results.
* * * * *

12.0 Calculations and Data Analysis

* * * * *
    12.8 NO2--NO Conversion Efficiency Correction. If 
desired, calculate the total NOX concentration with a 
correction for converter efficiency using Equation 7E-8.
[GRAPHIC] [TIFF OMITTED] TP08SE15.010

* * * * *

Method 10--Determination of Carbon Monoxide Emissions From Stationary 
Sources (Instrumental Analyzer Procedure)

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.2.5 Flexible Bag. Tedlar, or equivalent, with a capacity of 60 
to 90 liters (2 to 3 ft\3\). (Verify through the manufacturer that 
the Tedlar alternative is suitable for CO and make this verified 
information available for inspection.) Leak-test the bag in the 
laboratory before using by evacuating with a pump followed by a dry 
gas meter. When the evacuation is complete, there should be no flow 
through the meter.
    6.2.6 Sample Tank. Stainless steel or aluminum tank equipped 
with a pressure indicator with a minimum volume of 4 liters.
* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.4.2 Integrated Sampling. Evacuate the flexible bag or sample 
tank. Set up the equipment as shown in Figure 10-1 with the bag 
disconnected. Place the probe in the stack and purge the sampling 
line. Connect the bag, making sure that all connections are leak-
free. Sample at a rate proportional to the stack velocity. If 
needed, the CO2 content of the gas may be determined by 
using the

[[Page 54162]]

Method 3 integrated sample procedures, or by weighing an ascarite 
CO2 removal tube used and computing CO2 
concentration from the gas volume sampled and the weight gain of the 
tube. Data may be recorded on a form similar to Table 10-1. If a 
sample tank is used for sample collection, follow procedures similar 
to those in sections 8.1.2, 8.2.3, 8.3, and 12.4 of Method 25 as 
appropriate to prepare the tank, conduct the sampling, and correct 
the measured sample concentration.
* * * * *

Method 10A--Determination of Carbon Monoxide Emissions in Certifying 
Continuous Emission Monitoring Systems at Petroleum Refineries

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.1.6 Flexible Bag. Tedlar, or equivalent, with a capacity of 10 
liters (0.35 ft\3\) and equipped with a sealing quick-connect plug. 
The bag must be leak-free according to section 8.1. For protection, 
it is recommended that the bag be enclosed within a rigid container.
    6.1.7 Sample Tank. Stainless steel or aluminum tank equipped 
with a pressure indicator with a minimum volume of 10 liters.
    6.1.8 Valves. Stainless-steel needle valve to adjust flow rate, 
and stainless-steel 3-way valve, or equivalent.
    6.1.9 CO2 Analyzer. Fyrite, or equivalent, to measure 
CO2 concentration to within 0.5 percent.
    6.1.10 Volume Meter. Dry gas meter, capable of measuring the 
sample volume under calibration conditions of 300 ml/min (0.01 
ft\3\/min) for 10 minutes.
    6.1.11 Pressure Gauge. A water filled U-tube manometer, or 
equivalent, of about 30 cm (12 in.) to leak-check the flexible bag.
* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.1 Sample Bag or Tank Leak-Checks. While a leak-check is 
required after bag or sample tank use, it should also be done before 
the bag or sample tank is used for sample collection. The tank 
should be leak-checked according to the procedure specified in 
section 8.1.2 of Method 25. The bag should be leak-checked in the 
inflated and deflated condition according to the following 
procedure:
* * * * *
    8.2.1 Evacuate and leak check the sample bag or tank as 
specified in section 8.1. Assemble the apparatus as shown in Figure 
10A-1. Loosely pack glass wool in the tip of the probe. Place 400 ml 
of alkaline permanganate solution in the first two impingers and 250 
ml in the third. Connect the pump to the third impinger, and follow 
this with the surge tank, rate meter, and 3-way valve. Do not 
connect the bag or sample tank to the system at this time.
* * * * *
    8.2.3 Purge the system with sample gas by inserting the probe 
into the stack and drawing the sample gas through the system at 300 
ml/min  10 percent for 5 minutes. Connect the evacuated 
bag or sample tank to the system, record the starting time, and 
sample at a rate of 300 ml/min for 30 minutes, or until the bag is 
nearly full, or the sample tank reaches ambient pressure. Record the 
sampling time, the barometric pressure, and the ambient temperature. 
Purge the system as described above immediately before each sample.
* * * * *

Method 10B--Determination of Carbon Monoxide Emissions From Stationary 
Sources

* * * * *

6.0 Equipment and Supplies

* * * * *
    6.1 Sample Collection. Same as in Method 10A, section 6.1 
(paragraphs 6.1.1 through 6.1.11).
* * * * *

0
14. Revise section 8.3.2 in Method 15 of appendix A-5 to part 60 to 
read as follows:

Appendix A-5 to Part 60--Test Methods 11 through 15A

* * * * *

Method 15--Determination of Hydrogen Sulfide, Carbonyl Sulfide, and 
Carbon Disulfide Emissions From Stationary Sources

* * * * *

8.0 Sample Collection, Preservation, Transport, and Storage

* * * * *
    8.3.2 Determination of Calibration Drift. After each run, or 
after a series of runs made within a 24-hour period, perform a 
partial recalibration using the procedures in section 10.0. Only 
H2S (or other permeant) need be used to recalibrate the 
GC/FPD analysis system and the dilution system. Partial 
recalibration may be performed at the midlevel calibration gas 
concentration or at a concentration measured in the samples but not 
less than the lowest calibration standard used in the initial 
calibration. Compare the calibration curves obtained after the runs 
to the calibration curves obtained under section 10.3. The 
calibration drift should not exceed the limits set forth in section 
13.4. If the drift exceeds this limit, the intervening run or runs 
should be considered invalid. As an option, the calibration data set 
which gives the highest sample values may be chosen by the tester.
* * * * *

0
15. In appendix A-6 to part 60:
0
a. Revise sections 12.1 and 12.2 in Method 16C.
0
b. Remove section 8.2.1.5.2.3 in Method 18.
    The revisions read as follows:

Appendix A-6 to Part 60--Test Methods 16 through 18

* * * * *

Method 16C--Determination of Total Reduced Sulfur Emissions From 
Stationary Sources

* * * * *

12.0 Calculations and Data Analysis

* * * * *
    12.1 Nomenclature.
ACE = Analyzer calibration error, percent of calibration span.
CD = Calibration drift, percent.
CDir = Measured concentration of a calibration gas (low, 
mid, or high) when introduced in direct calibration mode, ppmv.
CH2S = Concentration of the system performance check gas, 
ppmv H2S.
CS = Measured concentration of the system performance gas 
when introduced in system calibration mode, ppmv H2S.
CSO2 = Unadjusted sample SO2 concentration, 
ppmv.
CTRS = Total reduced sulfur concentration corrected for 
system performance, ppmv.
CS = Calibration span, ppmv.
DF = Dilution system (if used) dilution factor, dimensionless.
SP = System performance, percent.
    12.2 Analyzer Calibration Error. For non-dilution systems, use 
Equation 16C-1 to calculate the analyzer calibration error for the 
low-, mid-, and high-level calibration gases.
[GRAPHIC] [TIFF OMITTED] TP08SE15.011

* * * * *

0
16. In appendix A-7 to part 60:
0
a. Revise sections 9.1, 12.1, and 12.3 in Method 25C.
0
b. Remove section 11.2 in Method 25C.
0
c. Add sections 12.4, 12.5, 12.5.1, and 12.5.2 in Method 25C.
    The revisions and additions read as follows:

Appendix A-7 to Part 60--Test Methods 19 through 25E

* * * * *

[[Page 54163]]

Method 25C--Determination of Nonmethane Organic Compounds (NMOC) in 
Landfill Gases

* * * * *

9.0 Quality Control

* * * * *
    9.1 Miscellaneous Quality Control Measures.

------------------------------------------------------------------------
                                 Quality control
           Section                   measure               Effect
------------------------------------------------------------------------
8.4.2.......................  Verify that landfill  Ensures that ambient
                               gas sample contains   air was not drawn
                               less than 20          into the landfill
                               percent N2 or 5       gas sample and gas
                               percent O2.           was sampled from an
                                                     appropriate
                                                     location.
10.1, 10.2..................  NMOC analyzer         Ensures precision of
                               initial and daily     analytical results.
                               performance checks.
------------------------------------------------------------------------

* * * * *

12.0 Data Analysis and Calculations

* * * * *
    12.1 Nomenclature.
Bw = Moisture content in the sample, fraction.
CN2 = N2 concentration in the diluted sample 
gas.
CmN2 = Measured N2 concentration, fraction in 
landfill gas.
CmOx = Measured Oxygen concentration, fraction in 
landfill gas.
COx = Oxygen concentration in the diluted sample gas.
Ct = Calculated NMOC concentration, ppmv C equivalent.
Ctm = Measured NMOC concentration, ppmv C equivalent.
Pb = Barometric pressure, mm Hg.
Pt = Gas sample tank pressure after sampling, but before 
pressurizing, mm Hg absolute.
Ptf = Final gas sample tank pressure after pressurizing, 
mm Hg absolute.
Pti = Gas sample tank pressure after evacuation, mm Hg 
absolute.
Pw = Vapor pressure of H2O (from Table 25C-1), 
mm Hg.
r = Total number of analyzer injections of sample tank during 
analysis (where j = injection number, 1 . . . r).
Tt = Sample tank temperature at completion of sampling, 
[deg]K.
Tti = Sample tank temperature before sampling, [deg]K.
Ttf = Sample tank temperature after pressuring, [deg]K.
* * * * *
    12.3 Nitrogen Concentration in the landfill gas. Use equation 
25C-2 to calculate the measured concentration of nitrogen in the 
original landfill gas.
[GRAPHIC] [TIFF OMITTED] TP08SE15.012

    12.4 Oxygen Concentration in the landfill gas. Use equation 25C-
3 to calculate the measured concentration of oxygen in the original 
landfill gas.
[GRAPHIC] [TIFF OMITTED] TP08SE15.013

    12.5 You must correct the NMOC Concentration for the 
concentration of nitrogen or oxygen based on which gas or gases 
passes the requirements in section 9.1.
    12.5.1 NMOC Concentration with nitrogen correction. Use Equation 
25C-4 to calculate the concentration of NMOC for each sample tank 
when the nitrogen concentration is less than 20 percent.
[GRAPHIC] [TIFF OMITTED] TP08SE15.014

    12.5.2 NMOC Concentration with oxygen correction. Use Equation 
25C-4 to calculate the concentration of NMOC for each sample tank if 
the landfill gas oxygen is less than 5 percent and the landfill gas 
nitrogen concentration is greater than 20 percent.

[[Page 54164]]

[GRAPHIC] [TIFF OMITTED] TP08SE15.015

* * * * *

0
17. In appendix A-8 to part 60:
0
a. Revise section 13.3 in Method 26.
0
b. Revise sections 4.3, 6.1.7, 8.1.5, and 8.1.6 in Method 26A.
0
c. Revise section 8.2.9.3 in Method 29.
0
d. Add section 10.4 and 10.5 in Method 29.
0
e. Revise the section heading for section 8.1 in Method 30A.
0
f. Revise the section heading for section 8.1 and section 8.3.3.8 in 
Method 30B.
    The revisions and additions read as follows:

Appendix A-8 to Part 60--Test Methods 26 through 30B

* * * * *

Method 26--Determination of Hydrogen Chloride Emissions From Stationary 
Sources

* * * * *

13.0 Method Performance

* * * * *
    13.3 Detection Limit. A typical IC instrumental detection limit 
for C1- is 0.2 [mu]g/ml. Detection limits for the other 
analyses should be similar. Assuming 50 ml liquid recovered from 
both the acidified impingers, and the basic impingers, and 0.12 dscm 
of stack gas sampled, then the analytical detection limit in the 
stack gas will be about 0.05 ppm for HCl and Cl2, 
respectively.
* * * * *

Method 26A--Determination of Hydrogen Halide and Halogen Emissions From 
Stationary Sources Isokinetic Method

* * * * *

4.0 Interferences

* * * * *
    4.3 Dissociating chloride salts (e.g., ammonium chloride) at 
elevated temperatures interfere with halogen acid measurement in 
this method. Maintaining particulate probe/filter temperatures at 
120  14 [deg]C (248  25 [deg]F) minimizes 
this interference.
* * * * *

6.0. Equipment and Supplies

* * * * *
    6.1.7 Heating System. Any heating system capable of monitoring 
and maintaining temperature around the filter shall be used to 
ensure a sample gas temperature exiting the filter of 120  14 [deg]C (248  25 [deg]F) during sampling or 
such other temperature as specified by an applicable subpart of the 
standards. The monitoring and regulation of the temperature around 
the filter may be done with the filter temperature sensor or another 
temperature sensor.
* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.1.5 Sampling Train Operation. Follow the general procedure 
given in Method 5, section 8.5. Maintain a temperature around the 
probe, through the filter (and cyclone, if used) of 120  
14 [deg]C (248  25 [deg]F) or such other temperature as 
specified by an applicable subpart of the standards to avoid 
dissociating halogen salts and to maintain acid gases in the vapor 
phase since it is extremely difficult to purge acid gases off these 
components. (These components are not quantitatively recovered and 
hence any collection of acid gases on these components will result 
in potential under reporting these emissions.) For each run, record 
the data required on a data sheet such as the one shown in Method 5, 
Figure 5-3. If the condensate impinger becomes too full, it may be 
emptied, recharged with 50 ml of 0.1 N H2SO4, 
and replaced during the sample run. The condensate emptied must be 
saved and included in the measurement of the volume of moisture 
collected and included in the sample for analysis. The additional 50 
ml of absorbing reagent must also be considered in calculating the 
moisture. Before the sampling train integrity is compromised by 
removing the impinger, conduct a leak-check as described in Method 
5, section 8.4.2.
    8.1.6 Post-Test Moisture Removal (Optional). When the optional 
cyclone is included in the sampling train or when liquid is visible 
on the filter at the end of a sample run even in the absence of a 
cyclone, perform the following procedure. Upon completion of the 
test run, connect the ambient air conditioning tube at the probe 
inlet and operate the train with the filter heating system between 
120 and 134 [deg]C (248 and 273 [deg]F) at a low flow rate (e.g., 
[Delta]H = 1 in. H2O) to vaporize any liquid and hydrogen 
halides in the cyclone or on the filter and pull them through the 
train into the impingers. After 30 minutes, turn off the flow, 
remove the conditioning tube, and examine the cyclone and filter for 
any visible liquid. If liquid is visible, repeat this step for 15 
minutes and observe again. Keep repeating until the cyclone is dry.

    Note: It is critical that this is repeated until the cyclone is 
completely dry.

* * * * *

Method 29--Determination of Metals Emissions From Stationary Sources

* * * * *

8.0 Sample Collection, Preservation, Transport, and Storage

* * * * *
    8.2.9.3 Wash the two permanganate impingers with 25 ml of 8 N 
HCl, and place the wash in a separate sample container labeled No. 
5C containing 200 ml of water. First, place 200 ml of water in the 
container. Then wash the impinger walls and stem with the 8 N HCl by 
turning the impinger on its side and rotating it so that the HCl 
contacts all inside surfaces. Use a total of only 25 ml of 8 N HCl 
for rinsing both permanganate impingers combined. Rinse the first 
impinger, then pour the actual rinse used for the first impinger 
into the second impinger for its rinse. Finally, pour the 25 ml of 8 
N HCl rinse carefully into the container with the 200 ml of water. 
Mark the height of the fluid level on the outside of the container 
in order to determine if leakage occurs during transport.
* * * * *

10.0 Calibration and Standardization

* * * * *
    10.4 Field Balance Calibration Check. Check the calibration of 
the balance used to weigh impingers using ASTM E617-13 ``Standard 
Specification for Laboratory Weights and Precision Mass Standards'' 
(incorporated by reference--see 40 CFR 60.17) Class 3 tolerance (or 
better) weight of at least 500g or within 50g of a loaded impinger 
weight. Daily before use, the field balance must measure the weight 
within  0.5g of the certified mass. If the daily balance 
calibration check fails, perform corrective measures and repeat 
check before use of balance.
    10.5 Analytical Balance Calibration. Perform a multipoint 
calibration (at least five points spanning the operational range) of 
the analytical balance before the first use and semiannually, 
thereafter. The calibration of the analytical balance must be 
conducted using ASTM E617-13 ``Standard Specification for Laboratory 
Weights and Precision Mass Standards'' (incorporated by reference--
see 40 CFR 60.17) Class 2 (or better) tolerance weights. Audit the 
balance each day it is used for gravimetric measurements by weighing 
at least one ASTM E617-13 Class 2 tolerance (or better) calibration 
weight that corresponds to 50 to 150 percent of the weight of one 
filter or 5 g. If the scale cannot reproduce the value of the 
calibration weight to within 0.5 mg of the certified mass, perform 
corrective measures, and conduct the multipoint calibration before 
use.
* * * * *

Method 30A--Determination of Total Vapor Phase Mercury Emissions From 
Stationary Sources (Instrumental Analyzer Procedure)

* * * * *

8.0 Sample Collection

* * * * *

[[Page 54165]]

    8.1 Selection of Sampling Sites and Sampling Points. * * *
* * * * *

Method 30B--Determination of Total Vapor Phase Mercury Emissions From 
Coal-Fired Combustion Sources Using Carbon Sorbent Traps

* * * * *

8.0 Sample Collection and Handling

* * * * *
    8.1 Selection of Sampling Sites and Sampling Points. * * *
* * * * *
    8.3.3.8 Sample Handling, Preservation, Storage, and Transport. 
While the performance criteria of this approach provides for 
verification of appropriate sample handling, it is still important 
that the user consider, determine, and plan for suitable sample 
preservation, storage, transport, and holding times for these 
measurements. Therefore, procedures in ASTM D6911-15 ``Standard 
Guide for Packaging and Shipping Environmental Samples for 
Laboratory Analysis'' (incorporated by reference--see 40 CFR 60.17) 
shall be followed for all samples, where appropriate.
* * * * *
0
18. In appendix B to part 60:
0
a. Add the entry ``Performance Specification 16--Specifications and 
Test Procedures for Predictive Emission Monitoring Systems in 
Stationary Sources'' at the end of the table of contents for appendix B 
to part 60.
0
b. Add a sentence to the end of section 8.1(2)(i) in Performance 
Specification 1.
0
c. Revise sections 3.11, 6.1.1, 16.3.2, and Figure 2-1 in section 18.0 
in Performance Specification 2.
0
d. Revise section 13.2 in Performance Specification 3.
0
e. Revise sections 8.3, 8.3.1, and 13.3 in Performance Specification 
4A.
0
f. Revise sections 12.1 and 13.1 in Performance Specification 11.
0
g. Revise section 9.1.2 in Performance Specification 15.
0
h. Add sections 14.0 and 15.0 in Performance Specification 15.
0
i. Revise the introductory text of section 12.2.3 in Performance 
Specification 16.
0
j. Revise table 16-1 in Performance Specification 16.
    The revisions and additions read as follows:

Appendix B to Part 60--Performance Specifications

* * * * *

Performance Specification 1--Specifications and Test Procedures for 
Continuous Opacity Monitoring Systems in Stationary Sources

* * * * *

8.0 What Performance Procedures Are Required To Comply With PS-1?

* * * * *
    8.1 * * *
    (2) * * *
    (i) Measurement Location. * * * Alternatively, you may select a 
measurement location specified in paragraph 8.1(2)(ii) or 
8.1(2)(iii).
* * * * *

Performance Specification 2--Specifications and Test Procedures for 
SO2 and NOX Continuous Emission Monitoring 
Systems in Stationary Sources

* * * * *

3.0 Definitions

* * * * *
    3.11 Span Value means the calibration portion of the measurement 
range as specified in the applicable regulation or other 
requirement. If the span is not specified in the applicable 
regulation or other requirement, then it must be a value 
approximately equivalent to two times the emission standard.
* * * * *

6.0 Equipment and Supplies

* * * * *
    6.1.1 Data Recorder. The portion of the CEMS that provides a 
record of analyzer output. The data recorder may record other 
pertinent data such as effluent flow rates, various instrument 
temperatures or abnormal CEMS operation. The data recorder output 
range must include the full range of expected concentration values 
in the gas stream to be sampled including zero and span values.
* * * * *

16.0 Alternative Procedures

* * * * *
    16.3.2 For diluent CEMS:

RA = d; <=0.7 percent O2 or CO2, as 
applicable.


    Note:  Waiver of the relative accuracy test in favor of the 
alternative RA procedure does not preclude the requirements to 
complete the CD tests nor any other requirements specified in an 
applicable subpart for reporting CEMS data and performing CEMS drift 
checks or audits.

* * * * *

18.0 Tables, Diagrams, Flowcharts, and Validation Data

Figure 2-1. Calibration Drift Determination

                                               Table 2-1--t-Values
----------------------------------------------------------------------------------------------------------------
      N a              t 0.975               n a              t 0.975             n a              t 0.975
----------------------------------------------------------------------------------------------------------------
          2                 12.706               7                 2.447             12                 2.201
          3                  4.303               8                 2.365             13                 2.179
          4                  3.182               9                 2.306             14                 2.160
          5                  2.776              10                 2.262             15                 2.145
          6                  2.571              11                 2.228             16                 2.131
----------------------------------------------------------------------------------------------------------------
\a\ The values in this table are already corrected for n-1 degrees of freedom. Use n equal to the number of
  individual values.


                                          Table 2-2--Measurement Range
----------------------------------------------------------------------------------------------------------------
                                                                              Diluent monitor for
         Measurement point              Pollutant monitor    ---------------------------------------------------
                                                                         CO2                       O2
----------------------------------------------------------------------------------------------------------------
1.................................  20-30% of span value....  5-8% by volume..........  4-6% by volume.
2.................................  50-60% of span value....  10-14% by volume........  8-12% by volume.
----------------------------------------------------------------------------------------------------------------


--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                       Percent of span
                            Day             Date and time      Calibration value (C)    Monitor value (M)       Difference (C-M)      value (C-M)/span
                                                                                                                                         value x 100
--------------------------------------------------------------------------------------------------------------------------------------------------------
Low-level            ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................

[[Page 54166]]

 
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
High-level           ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
                     ................  ......................  .....................  .....................  .....................  ....................
--------------------------------------------------------------------------------------------------------------------------------------------------------

* * * * *

Performance Specification 3--Specifications and Test Procedures for 
O2 and CO2 Continuous Emission Monitoring Systems 
in Stationary Sources

* * * * *

13.0 Method Performance

* * * * *
    13.2 CEMS Relative Accuracy Performance Specification. The RA of 
the CEMS must be no greater than 20.0 percent of the mean value of 
the reference method (RM) data when calculated using equation 3-1. 
The results are also acceptable if the result of Equation 3-2 is 
less than or equal to 1.0 percent O2 (or CO2).
[GRAPHIC] [TIFF OMITTED] TP08SE15.016

Where:

d = Absolute value of the mean of the differences (from Equation 2-3 
of Performance Specification 2).
[verbarlm]CC[verbarlm] = Absolute value of the confidence 
coefficient (from Equation 2-5 of Performance Specification 2).
[GRAPHIC] [TIFF OMITTED] TP08SE15.017

* * * * *

Performance Specification 4A--Specifications and Test Procedures for 
Carbon Monoxide Continuous Emission Monitoring Systems in Stationary 
Sources

* * * * *

8.0 Sample Collection, Preservation, Storage, and Transport

* * * * *
    8.3 Response Time Test Procedure. The response time test applies 
to all types of CEMS, but will generally have significance only for 
extractive systems. The entire system is checked with this procedure 
including applicable sample extraction and transport, sample 
conditioning, gas analyses, and data recording.
    8.3.1 Introduce zero gas into the system. When the system output 
has stabilized (no change greater than 1 percent of full scale for 
30 sec), introduce an upscale calibration gas and wait for a stable 
value. Record the time (upscale response time) required to reach 95 
percent of the final stable value. Next, reintroduce the zero gas 
and wait for a stable reading before recording the response time 
(downscale response time). Repeat the entire procedure three times 
and determine the mean upscale and downscale response times. The 
slower or longer of the two means is the system response time.
* * * * *

13.0 Method Performance

* * * * *
    13.3 Response Time. The CEMS response time shall not exceed 2.0 
min to achieve 95 percent of the final stable value.
* * * * *

Performance Specification 11--Specifications and Test Procedures for 
Particulate Matter Continuous Emission Monitoring Systems at Stationary 
Sources

* * * * *

12.0 What calculations and data analyses are needed?

* * * * *

[[Page 54167]]

    12.1 How do I calculate upscale drift and zero drift? You must 
determine the difference in your PM CEMS output readings from the 
established reference values (zero and upscale check values) after a 
stated period of operation during which you performed no unscheduled 
maintenance, repair, or adjustment.
    (1) Calculate the upscale drift (UD) using Equation 11-1:
    [GRAPHIC] [TIFF OMITTED] TP08SE15.018
    
Where:

UD = The upscale (high-level) drift of your PM CEMS in percent,
RCEM = The measured PM CEMS response to the upscale 
reference standard, and
RU = The pre-established numerical value of the upscale 
reference standard.
Rr = The response range of the analyzer.

    (2) Calculate the zero drift (ZD) using Equation 11-2:
    [GRAPHIC] [TIFF OMITTED] TP08SE15.019
    
Where:

ZD = The zero (low-level) drift of your PM CEMS in percent,
RCEM = The measured PM CEMS response to the zero 
reference standard,
RL = The pre-established numerical value of the zero 
reference standard, and
Rr = The response range of the analyzer.
* * * * *
    13.0 What are the performance criteria for my PM CEMS?
* * * * *
    13.1 What is the 7-day drift check performance specification? 
Your daily PM CEMS internal drift checks must demonstrate that the 
average daily drift of your PM CEMS does not deviate from the value 
of the reference light, optical filter, Beta attenuation signal, or 
other technology-suitable reference standard by more than 2 percent 
of the response range. If your CEMS includes diluent and/or 
auxiliary monitors (for temperature, pressure, and/or moisture) that 
are employed as a necessary part of this performance specification, 
you must determine the calibration drift separately for each 
ancillary monitor in terms of its respective output (see the 
appropriate performance specification for the diluent CEMS 
specification). None of the calibration drifts may exceed their 
individual specification.
* * * * *

Performance Specification 15--Performance Specification for Extractive 
FTIR Continuous Emissions Monitor Systems in Stationary Sources

* * * * *

9.0 Quality Control

* * * * *
    9.1.2 Test Procedure. Spike the audit sample using the analyte 
spike procedure in section 11. The audit sample is measured directly 
by the FTIR system (undiluted) and then spiked into the effluent at 
a known dilution ratio. Measure a series of spiked and unspiked 
samples using the same procedures as those used to analyze the stack 
gas. Analyze the results using sections 12.1 and 12.2. The measured 
concentration of each analyte must be within 5 percent 
of the expected concentration (plus the uncertainty), i.e., the 
calculated correction factor must be within 0.93 and 1.07 for an 
audit with an analyte uncertainty of 2 percent.
* * * * *
    14.0 Pollution Prevention [Reserved]
    15.0 Waste Management [Reserved]
* * * * *

Performance Specification 16--Specifications and Test Procedures for 
Predictive Emission Monitoring Systems in Stationary Sources

* * * * *

12.0 Calculations and Data Analysis

* * * * *
    12.2.3 Confidence Coefficient. Calculate the confidence 
coefficient using Equation 16-3 and Table 16-1 for n-1 degrees of 
freedom.
* * * * *

17.0 Tables, Diagrams, Flowcharts, and Validation Data

  Table 16-1--t-Values for One-sided, 97.5 Percent Confidence Intervals
                       for Selected Sample Sizes *
------------------------------------------------------------------------
                            n-1                                 t0.025
------------------------------------------------------------------------
1..........................................................       12.706
2..........................................................        4.303
3..........................................................        3.182
4..........................................................        2.776
5..........................................................        2.571
6..........................................................        2.447
7..........................................................        2.365
8..........................................................        2.306
9..........................................................        2.262
10.........................................................        2.228
11.........................................................        2.201
12.........................................................        2.179
13.........................................................        2.160
14.........................................................        2.145
15.........................................................        2.131
16.........................................................        2.120
17.........................................................        2.110
18.........................................................        2.101
19.........................................................        2.093
20.........................................................        2.086
21.........................................................        2.080
22.........................................................        2.074
23.........................................................        2.069
24.........................................................        2.064
25.........................................................        2.060
26.........................................................        2.056
27.........................................................        2.052
>28........................................................      t-Table
------------------------------------------------------------------------
* n-1 equals the degrees of freedom.

* * * * *
0
19. Revise section 12.0 paragraphs (3) and (4) in Procedure 2 of 
appendix F to part 60 to read as follows:

Appendix F to Part 60--Quality Assurance Procedures

* * * * *

Procedure 2--Quality Assurance Requirements for Particulate Matter 
Continuous Emission Monitoring Systems at Stationary Sources

* * * * *

12.0 What calculations and data analysis must I perform for my PM 
CEMS?

* * * * *
    (3) How do I calculate daily upscale and zero drift? You must 
calculate the upscale drift using Equation 2-2 and the zero drift 
using Equation 2-3:
[GRAPHIC] [TIFF OMITTED] TP08SE15.020


[[Page 54168]]


Where:
UD = The upscale drift of your PM CEMS, in percent,
RCEM = Your PM CEMS response to the upscale check value, 
and
RU = The upscale check value.
Rr = The response range of the analyzer.
[GRAPHIC] [TIFF OMITTED] TP08SE15.021

Where:
ZD = The zero (low-level) drift of your PM CEMS, in percent,
RCEM = Your PM CEMS response of the zero check value,
RL = The zero check value.
Rr = The response range of the analyzer.

    (4) How do I calculate SVA accuracy? You must use Equation 2-4 
to calculate the accuracy, in percent, for each of the three SVA 
tests or the daily sample volume check:
[GRAPHIC] [TIFF OMITTED] TP08SE15.022

Where:
VM = Sample gas volume determined/reported by your PM 
CEMS (e.g., dscm),
VR = Sample gas volume measured by the independent 
calibrated reference device (e.g., dscm) for the SVA or the 
reference value for the daily sample volume check.

    Note:  Before calculating SVA accuracy, you must correct the 
sample gas volumes measured by your PM CEMS and the independent 
calibrated reference device to the same basis of temperature, 
pressure, and moisture content. You must document all data and 
calculations.

* * * * *

PART 61-NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS

0
20. The authority citation for part 61 continues to read as follows:

    Authority:  42 U.S.C. 7401 et seq.
0
21. In Sec.  61.13, revise paragraph (e)(1)(i) to read as follows:


Sec.  61.13  Emission tests and waiver of emission tests.

* * * * *
    (e) * * *
    (1) * * *
    (i) The source owner, operator, or representative of the tested 
facility shall obtain an audit sample, if commercially available, from 
an AASP for each test method used for regulatory compliance purposes. 
No audit samples are required for the following test methods: Methods 
3A and 3C of appendix A-3 of part 60 of this chapter; Methods 6C, 7E, 
9, and 10 of appendix A-4 of part 60; Method 18 and 19 of appendix A-6 
of part 60; Methods 20, 22, and 25A of appendix A-7 of part 60; Methods 
30A and 30B of appendix A-8 of part 60; and Methods 303, 318, 320, and 
321 of appendix A of part 63 of this chapter. If multiple sources at a 
single facility are tested during a compliance test event, only one 
audit sample is required for each method used during a compliance test. 
The compliance authority responsible for the compliance test may waive 
the requirement to include an audit sample if they believe that an 
audit sample is not necessary. ``Commercially available'' means that 
two or more independent AASPs have blind audit samples available for 
purchase. If the source owner, operator, or representative cannot find 
an audit sample for a specific method, the owner, operator, or 
representative shall consult the EPA Web site at the following URL, 
www.epa.gov/ttn/emc, to confirm whether there is a source that can 
supply an audit sample for that method. If the EPA Web site does not 
list an available audit sample at least 60 days prior to the beginning 
of the compliance test, the source owner, operator, or representative 
shall not be required to include an audit sample as part of the quality 
assurance program for the compliance test. When ordering an audit 
sample, the source owner, operator, or representative shall give the 
sample provider an estimate for the concentration of each pollutant 
that is emitted by the source or the estimated concentration of each 
pollutant based on the permitted level and the name, address, and phone 
number of the compliance authority. The source owner, operator, or 
representative shall report the results for the audit sample along with 
a summary of the emission test results for the audited pollutant to the 
compliance authority and shall report the results of the audit sample 
to the AASP. The source owner, operator, or representative shall make 
both reports at the same time and in the same manner or shall report to 
the compliance authority first and then report to the AASP. If the 
method being audited is a method that allows the samples to be analyzed 
in the field and the tester plans to analyze the samples in the field, 
the tester may analyze the audit samples prior to collecting the 
emission samples provided a representative of the compliance authority 
is present at the testing site. The tester may request, and the 
compliance authority may grant, a waiver to the requirement that a 
representative of the compliance authority must be present at the 
testing site during the field analysis of an audit sample. The source 
owner, operator, or representative may report the results of the audit 
sample to the compliance authority and then report the results of the 
audit sample to the AASP prior to collecting any emission samples. The 
test protocol and final test report shall document whether an audit 
sample was ordered and utilized and the pass/fail results as 
applicable.
* * * * *
0
22. Revise the section heading for section 11.7.3 in Method 107 of 
appendix B to part 61 to read as follows:

Appendix B to Part 61--Test Methods

* * * * *

Method 107--Determination of Vinyl Chloride Content of In-Process 
Wastewater Samples, and Vinyl Chloride Content of Polyvinyl Chloride 
Resin Slurry, Wet Cake, and Latex Samples

* * * * *

11.0 Analytical Procedure

* * * * *
    11.7.3 Dispersion Resin Slurry and Latex Samples. * * *
* * * * *

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

0
23. The authority citation for part 63 continues to read as follows:

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

0
24. In Sec.  63.7:
0
a. Revise paragraph (c)(2)(iii)(A).
0
b. Add paragraph (g)(2).
    The revision and addition read as follows:

[[Page 54169]]

Sec.  63.7  Performance testing requirements.

* * * * *
    (c) * * *
    (2) * * *
    (iii) * * *
    (A) The source owner, operator, or representative of the tested 
facility shall obtain an audit sample, if commercially available, from 
an AASP for each test method used for regulatory compliance purposes. 
No audit samples are required for the following test methods: Methods 
3A and 3C of appendix A-3 of part 60 of this chapter; Methods 6C, 7E, 
9, and 10 of appendix A-4 of part 60; Methods 18 and 19 of appendix A-6 
of part 60; Methods 20, 22, and 25A of appendix A-7 of part 60; Methods 
30A and 30B of appendix A-8 of part 60; and Methods 303, 318, 320, and 
321 of appendix A of this part. If multiple sources at a single 
facility are tested during a compliance test event, only one audit 
sample is required for each method used during a compliance test. The 
compliance authority responsible for the compliance test may waive the 
requirement to include an audit sample if they believe that an audit 
sample is not necessary. ``Commercially available'' means that two or 
more independent AASPs have blind audit samples available for purchase. 
If the source owner, operator, or representative cannot find an audit 
sample for a specific method, the owner, operator, or representative 
shall consult the EPA Web site at the following URL, www.epa.gov/ttn/emc, to confirm whether there is a source that can supply an audit 
sample for that method. If the EPA Web site does not list an available 
audit sample at least 60 days prior to the beginning of the compliance 
test, the source owner, operator, or representative shall not be 
required to include an audit sample as part of the quality assurance 
program for the compliance test. When ordering an audit sample, the 
source owner, operator, or representative shall give the sample 
provider an estimate for the concentration of each pollutant that is 
emitted by the source or the estimated concentration of each pollutant 
based on the permitted level and the name, address, and phone number of 
the compliance authority. The source owner, operator, or representative 
shall report the results for the audit sample along with a summary of 
the emission test results for the audited pollutant to the compliance 
authority and shall report the results of the audit sample to the AASP. 
The source owner, operator, or representative shall make both reports 
at the same time and in the same manner or shall report to the 
compliance authority first and then report to the AASP. If the method 
being audited is a method that allows the samples to be analyzed in the 
field and the tester plans to analyze the samples in the field, the 
tester may analyze the audit samples prior to collecting the emission 
samples provided a representative of the compliance authority is 
present at the testing site. The tester may request, and the compliance 
authority may grant, a waiver to the requirement that a representative 
of the compliance authority must be present at the testing site during 
the field analysis of an audit sample. The source owner, operator, or 
representative may report the results of the audit sample to the 
compliance authority and then report the results of the audit sample to 
the AASP prior to collecting any emission samples. The test protocol 
and final test report shall document whether an audit sample was 
ordered and utilized and the pass/fail results as applicable.
* * * * *
    (g) * * *
    (2) Contents of report (electronic or paper submitted copy). Unless 
otherwise specified in a relevant standard or test method, or as 
otherwise approved by the Administrator in writing, results of a 
performance test shall include general identification information for 
the facility including a mailing address, the actual address, the owner 
or operator or responsible official (where they are applicable) or an 
appropriate representative and an email address for this person, and 
the appropriate Federal Registry System (FRS) number for the facility; 
the purpose of the test including the regulation requiring the test, 
the pollutant being measured, the units of the standard or the 
pollutant emissions units, and any process parameter component; a brief 
process description; a complete unit description, including a 
description of feed streams and control devices, the appropriate source 
classification code (SCC), and the latitude and longitude of the 
emission point being tested, and the permitted maximum process rate 
(where applicable); sampling site description; description of sampling 
and analysis procedures and any modifications to standard procedures; 
quality assurance procedures; record of operating conditions, including 
operating parameters for which limits are being set, 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; chain-of-custody documentation; explanation of laboratory 
data qualifiers; example calculations of all applicable stack gas 
parameters, emission rates, percent reduction rates, and analytical 
results, as applicable; identification information for the company 
conducting the performance test including a contact person and his/her 
email address; and any other information required by the test method, a 
relevant standard, or the Administrator.
* * * * *
0
25. Revise sections 13.1, 13.4, and 13.4.1 in Method 320 of appendix A 
to part 63 to read as follows:

Appendix A to Part 63--Test Methods Pollutant Measurement Methods From 
Various Waste Media

* * * * *

Test Method 320--Measurement of Vapor Phase Organic and Inorganic 
Emissions by Extractive Fourier Transform Infrared (FTIR) Spectroscopy

* * * * *

13.0 Method Validation Procedure

* * * * *
    13.1 Section 6.0 of Method 301 (40 CFR part 63, appendix A), the 
Analyte Spike procedure, is used with these modifications. The 
statistical analysis of the results follows section 12.0 of EPA 
Method 301. Section 3 of this method defines terms that are not 
defined in Method 301.
* * * * *
    13.4 Statistical Treatment. The statistical procedure of EPA 
Method 301 of this appendix, section 12.0 is used to evaluate the 
bias and precision. For FTIR testing a validation ``run'' is defined 
as spectra of 24 independent samples, 12 of which are spiked with 
the analyte(s) and 12 of which are not spiked.
    13.4.1 Bias. Determine the bias (defined by EPA Method 301 of 
this appendix, section 12.1.1) using equation 7:
B = SM - CS (7)
Where:
B = Bias at spike level.
Sm = Mean concentration of the analyte spiked samples.
CS = Expected concentration of the spiked samples.
* * * * *
[FR Doc. 2015-20768 Filed 9-4-15; 8:45 am]
 BILLING CODE 6560-50-P