[Federal Register Volume 75, Number 109 (Tuesday, June 8, 2010)]
[Rules and Regulations]
[Pages 32295-32302]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-13685]



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ENVIRONMENTAL PROTECTION AGENCY



40 CFR Part 141



[EPA-HQ-OW-2010-0288; FRL-9160-1]




Expedited Approval of Alternative Test Procedures for the 

Analysis of Contaminants Under the Safe Drinking Water Act; Analysis 

and Sampling Procedures



AGENCY: Environmental Protection Agency (EPA).



ACTION: Final rule.



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



SUMMARY: This action announces the Environmental Protection Agency's 

(EPA's) approval of alternative testing methods for use in measuring 

the levels of contaminants in drinking water and determining compliance 

with national primary drinking water regulations. The Safe Drinking 

Water Act (SDWA) authorizes EPA to approve the use of alternative 

testing methods through publication in the Federal Register. EPA is 

using this streamlined authority to make 12 additional methods 

available for analyzing drinking water samples required by regulation. 

This expedited approach provides public water systems, laboratories, 

and primacy agencies with more timely access to new measurement 

techniques and greater flexibility in the selection of analytical 

methods, thereby reducing monitoring costs while maintaining public 

health protection.



DATES: This action is effective June 8, 2010.



[[Page 32296]]





FOR FURTHER INFORMATION CONTACT: Safe Drinking Water Hotline (800) 426-

4791 or Glynda Smith, Technical Support Center, Office of Ground Water 

and Drinking Water (MS 140), Environmental Protection Agency, 26 West 

Martin Luther King Drive, Cincinnati, OH 45268; telephone number: (513) 

569-7652; e-mail address: smith.glynda@epa.gov.



SUPPLEMENTARY INFORMATION:



I. General Information



A. Does this action apply to me?



    Public water systems are the regulated entities required to measure 

contaminants in drinking water samples. In addition, EPA Regions as 

well as States and Tribal governments with authority to administer the 

regulatory program for public water systems under SDWA may also measure 

contaminants in water samples. When EPA sets a monitoring requirement 

in its national primary drinking water regulations for a given 

contaminant, the Agency also establishes in the regulations 

standardized test procedures for analysis of the contaminant. This 

action makes alternative testing methods available for particular 

drinking water contaminants beyond the testing methods currently 

established in the regulations. EPA is providing public water systems 

required to test water samples with a choice of using either a test 

procedure already established in the existing regulations or an 

alternative test procedure that has been approved in this action. 

Categories and entities that may ultimately be affected by this action 

include:



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

                                       Examples of potentially    NAICS

              Category                   regulated entities        \1\

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

State, Local, & Tribal Governments.  States, local and tribal     924110

                                      governments that analyze

                                      water samples on behalf

                                      of public water systems

                                      required to conduct such

                                      analysis; States, local

                                      and tribal governments

                                      that themselves operate

                                      community and non-

                                      transient non-community

                                      water systems required to

                                      monitor.

Industry...........................  Private operators of         221310

                                      community and non-

                                      transient non-community

                                      water systems required to

                                      monitor.

Municipalities.....................  Municipal operators of       924110

                                      community and non-

                                      transient non-community

                                      water systems required to

                                      monitor.

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

\1\ North American Industry Classification System.



    This table is not exhaustive, but rather provides a guide for 

readers regarding entities likely to be affected by this action. This 

table lists the types of entities that EPA is now aware could 

potentially be affected by this action. Other types of entities not 

listed in the table could also be impacted. To determine whether your 

facility is affected by this action, you should carefully examine the 

applicability language in the Code of Federal Regulations (CFR) at 40 

CFR 141.2 (definition of public water system). If you have questions 

regarding the applicability of this action to a particular entity, 

consult the person listed in the preceding FOR FURTHER INFORMATION 

CONTACT section.



B. How can I get copies of this document and other related information?



    Docket. EPA established a docket for this action under Docket ID 

No. EPA-HQ-OW-2010-0288. Publicly available docket materials are 

available either electronically through http://www.regulations.gov or 

in hard copy at the Water Docket in the EPA Docket Center, (EPA/DC) EPA 

West, Room 3334, 1301 Constitution Ave., NW., Washington, DC. 

Copyrighted materials are available only in hard copy. The EPA Docket 

Center 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 

Water Docket is (202) 566-2426.



Abbreviations and Acronyms Used in This Action



APHA: American Public Health Association

CFR: Code of Federal Regulations

E. coli: Escherichia coli

EPA: Environmental Protection Agency

GWR: Ground Water Rule

IC-ESI-MS/MS: Ion Chromatography Electrospray Ionization Tandem Mass 

Spectrometry

NAICS: North American Industry Classification System

NEMI: National Environmental Methods Index

QC: Quality Control

SDWA: Safe Drinking Water Act

TCR: Total Coliform Rule

VCSB: Voluntary Consensus Standard Bodies



II. Background



A. What is the purpose of this action?



    In this action, EPA is approving 12 analytical methods for 

determining contaminant concentrations in samples collected under SDWA. 

Regulated parties required to sample and monitor may use either the 

testing methods already established in existing regulations or the 

alternative testing methods being approved in this action. The new 

methods are listed in appendix A to subpart C of part 141 and on EPA's 

drinking water methods Web site at http://www.epa.gov/safewater/methods/analyticalmethods_expedited.html.

    This action also includes the full text of three tables in Appendix 

A to Subpart C of Part 141. The tables do not include any new method 

approvals. EPA inadvertently deleted two table columns in the November 

10, 2009, Federal Register notice (74 FR 57908) (USEPA 2009b). The 

corrected tables are titled:

     Alternative Testing Methods for Disinfectant Residuals 

Listed at 40 CFR 141.74(a)(2),

     Alternative Testing Methods for Contaminants Listed at 40 

CFR 141.131(b)(1), and

     Alternative Testing Methods for Disinfectant Residuals 

Listed at 40 CFR 141.131(c)(1).



B. What is the basis for this action?



    When EPA determines that an alternative analytical method is 

``equally effective'' (i.e., as effective as a method that has already 

been promulgated in the regulations), SDWA allows EPA to approve the 

use of the alternative method through publication in the Federal 

Register. (See Section 1401(1) of SDWA.) EPA is using this streamlined 

approval authority to make 12 additional methods available for 

determining contaminant concentrations in samples collected under SDWA. 

EPA has determined that, for each contaminant or group of contaminants 

listed in Section III, the additional testing methods being approved in 

this action are equally effective as one or more of the testing methods 

already established in the regulations for those contaminants. Section 

1401(1) states that the newly approved methods ``shall be treated as an 

alternative for public water systems



[[Page 32297]]



to the quality control and testing procedures listed in the 

regulation.'' Accordingly, this action makes these additional (and 

optional) 12 analytical methods legally available for meeting EPA's 

monitoring requirements.

    This action does not add regulatory language, but does, for 

informational purposes, update an appendix to the regulations at 40 CFR 

part 141 that lists all methods approved under Section 1401(1) of SDWA. 

Accordingly, while this action is not a rule, it is updating CFR text 

and therefore is being published in the ``Final Rules'' section of this 

Federal Register.

    EPA described this expedited methods approval process in an April 

10, 2007, Federal Register notice (72 FR 17902) (USEPA 2007) and 

announced its intent to begin using the process. EPA published the 

first set of approvals in a June 3, 2008, Federal Register notice (73 

FR 31616) (USEPA 2008) and added appendix A to 40 CFR part 141, subpart 

C. Additional methods were added to appendix A to subpart C in an 

August 3, 2009, Federal Register notice (74 FR 38348) (USEPA 2009a) and 

a November 10, 2009, Federal Register notice (74 FR 57908) (USEPA 

2009b). Future approvals using this process are anticipated.



III. Summary of Approvals



    EPA is approving 12 methods that are equally effective relative to 

methods previously promulgated in the regulations. By means of this 

notice, these 12 methods are added to appendix A to subpart C of part 

141.



A. Methods Developed by EPA



    EPA Method 557 is a direct-injection, ion chromatography, negative-

ion electrospray ionization, tandem mass spectrometry (IC-ESI-MS/MS) 

method for the determination of nine haloacetic acids, dalapon, and 

bromate in finished drinking waters (USEPA 2009c). Each method analyte 

is qualitatively identified via a unique mass transition, and the 

concentration is calculated using the integrated peak area and the 

internal standard technique.

    EPA Method 557 eliminates the labor intensive sample preparation 

steps (extraction and derivatization) that are required in other 

methods. It also reduces the use of solvents and potentially hazardous 

chemicals. The development work for this method is described in the 

method research summary (Zaffiro and Zimmerman 2009). EPA Method 557 

has already been approved for determining haloacetic acids and bromate 

in drinking water (74 FR 57908) (USEPA 2009b); its approval is being 

expanded in this action to include dalapon.

    The approved methods for dalapon are listed at 40 CFR 141.24(e)(1). 

The performance characteristics of EPA Method 557 for dalapon were 

compared to the characteristics of approved EPA Methods 552.2 (USEPA 

1995), 552.3 (USEPA 2003), and 515.4 (USEPA 2000). EPA has determined 

that EPA Method 557 is equally effective for measuring dalapon as each 

one of these three previously approved methods. The basis for this 

determination is discussed in Smith (2010a). Therefore, EPA is 

approving EPA Method 557 for determining dalapon in drinking water and 

adding it to the list of approved methods in appendix A to subpart C of 

part 141 as an alternative method for contaminants listed at 40 CFR 

141.24(e)(1). A copy of EPA Method 557 can be accessed and downloaded 

directly on-line at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.



B. Methods Developed by Voluntary Consensus Standard Bodies (VCSB)



    1. Standard Methods for the Examination of Water and Wastewater. In 

Standard Method 6640 B, chlorinated acids in drinking water are 

derivatized and analyzed using gas chromatography with electron capture 

detection. The method uses the identical sample handling protocols, 

analytical conditions, and quality control (QC) criteria as EPA Method 

515.4 (USEPA 2000), which is approved for analyzing compliance samples 

for dalapon (40 CFR 141.24(e)(1)). EPA has determined that Standard 

Method 6640 B, published in the 21st edition of Standard Methods for 

the Examination of Water and Wastewater (APHA 2005), is equally 

effective relative to EPA Method 515.4 (Smith 2010b) for the analysis 

of compliance samples for dalapon. EPA has also determined that 

Standard Method 6640 B-01 (APHA 2001) is an identical on-line version 

of Standard Method 6640 B. Accordingly, EPA is approving Standard 

Method 6640 B and Standard Method 6640 B-01 for determining dalapon in 

drinking water and adding them to the list of approved methods in 

Appendix A to Subpart C of Part 141 as alternative methods for 

contaminants listed at 40 CFR 141.24(e)(1). The 21st edition can be 

obtained from the American Public Health Association (APHA), 800 I 

Street, NW., Washington, DC 20001-3710. Standard Method 6640 B-01 is 

available at http://www.standardmethods.org.

    2. ASTM International. EPA compared the most recent versions of six 

ASTM International methods for radiochemicals in water to the versions 

of those methods that are already approved under 40 CFR 141.25(a). 

Changes between the approved version and the most recent version of 

each method are summarized in Umbaugh (2010). The revisions primarily 

involve editorial changes (i.e., updated references, definitions, 

terminology, and reorganization of text). The revised methods are the 

same as the approved versions with respect to drinking water sample 

collection and handling protocols, sample preparation, analytical 

methodology, and results. The QC requirements in the revised methods 

have been expanded and are more detailed than in the previous versions. 

EPA has determined that the new versions are equally effective relative 

to those cited in the regulation (ASTM Methods D3454-97, D2460-97, 

D5174-02, D3649-98a, D4785-00a, and D4107-98 (reapproved 2002)) 

(Umbaugh 2010). Therefore, EPA is approving the use of the six updated 

ASTM methods for radiochemicals listed in the following table:



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

             ASTM Method                          Contaminant

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

D3454-05 (ASTM International 2009a).  Radium-226.

D2460-07 (ASTM International 2009b).  Radium-226.

D5174-07 (ASTM International 2009c).  Uranium.

D3649-06 (ASTM International 2009d).  Radioactive Cesium.

                                      Radioactive Iodine.

                                      Gamma emitters.

D4785-08 (ASTM International 2009e).  Radioactive Iodine.

                                      Gamma emitters.

D4107-08 (ASTM International 2009f).  Tritium.

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





[[Page 32298]]



As of today's notice, measurements of radiochemicals in drinking water 

may be performed using either one of these six methods or one of the 

methods already approved at 40 CFR 141.25(a). The six ASTM methods are 

available from ASTM International, 100 Barr Harbor Drive, West 

Conshohocken, PA 19428-2959 or http://www.astm.org.



C. Methods Developed by Vendors



    EPA previously approved by regulation the following alternative 

methods, which are listed at 40 CFR 141.21(f)(6), for determining 

Escherichia coli (E. coli) under the Total Coliform Rule (TCR): 

Readycult[supreg] (EMD Chemicals 2007), Chromocult[supreg] (EM Science 

2000), and Modified Colitag\TM\ (CPI International 2009). These three 

methods were not approved under the Ground Water Rule (GWR) (71 FR 

65574, November 8, 2006) (USEPA 2006), because they were not evaluated 

by EPA prior to proposal of the GWR. However, these methods were 

evaluated under the Alternate Test Procedure (ATP) program and EPA 

determined that the methods were equally effective for E. coli 

determination relative to Standard Method 9221F (Best 2010), published 

in the 20th edition of Standard Methods for the Examination of Water 

and Wastewater (APHA 1998). Standard Method 9221F is approved for E. 

coli determination under the GWR (40 CFR 141.402(c)(2)). EPA is using 

today's notice to approve the use of Readycult[supreg], 

Chromocult[supreg], and Modified Colitag\TM\ to meet E. coli monitoring 

requirements under GWR and is adding them to the list of approved 

methods in appendix A to subpart C of part 141 as alternative methods 

for contaminants listed at 40 CFR 141.402(c)(2).

    The 20th edition of Standard Methods for the Examination of Water 

and Wastewater (1998) is available from the American Public Health 

Association (APHA), 800 I Street, NW., Washington, DC 20001-3710.

    The Readycult[supreg] test is described in the document 

``Readycult[supreg] Coliforms 100 Presence/Absence Test for Detection 

and Identification of Coliform Bacteria and Escherichia coli in 

Finished Waters, January 2007, Version 1.1,'' available from EMD 

Chemicals (an affiliate of Merck KGaA, Darmstadt Germany), 480 S. 

Democrat Road, Gibbstown, NJ 08027-1297. (Telephone (800) 222-0342). 

Internet address http://www.readycult.com.

    The Chromocult[supreg] test is described in the document 

``Chromocult[supreg] Coliform Agar Presence/Absence Membrane Filter 

Test Method for Detection and Identification of Coliform Bacteria and 

Escherichia coli in Finished Waters,'' November 2000, Version 1.0, 

available from EMD Chemicals (formerly EM Science) (an affiliate of 

Merck KGaA, Darmstadt Germany), 480 S. Democrat Road, Gibbstown, NJ 

08027-1297. (Telephone (800) 222-0342).

    The Modified Colitag[supreg] test is described in the document 

``Modified Colitag\TM\ Test Method for the Simultaneous Detection of E. 

coli and other Total Coliforms in Water,'' August 28, 2009, available 

from CPI International, Inc., 5580 Skylane Blvd., Santa Rosa, CA, 

95403. (Telephone (800) 878-7654, Fax (707) 545-7901). Internet address 

http://www.cpiinternational.com.



IV. Statutory and Executive Order Reviews



    As noted in Section II, under the terms of SDWA Section 1401(1), 

this streamlined method approval action is not a rule. Accordingly, the 

Congressional Review Act, 5 U.S.C. 801 et seq., as added by the Small 

Business Regulatory Enforcement Fairness Act of 1996, does not apply 

because this action is not a rule for purposes of 5 U.S.C. 804(3). 

Similarly, this action is not subject to the Regulatory Flexibility Act 

because it is not subject to notice and comment requirements under the 

Administrative Procedure Act or any other statute. In addition, because 

this approval action is not a rule but simply makes alternative 

(optional) testing methods available for monitoring under SDWA, EPA has 

concluded that other statutes and executive orders generally applicable 

to rulemaking do not apply to this approval action.



V. References



American Public Health Association (APHA). 1998. 20th Edition of 

Standard Methods for the Examination of Water and Wastewater, 

American Public Health Association, 800 I Street, NW., Washington, 

DC 20001-3710.

American Public Health Association (APHA). 2001. Standard Method 

6640 B-01. Acidic Herbicide Compounds. Micro Liquid-Liquid 

Extraction Gas Chromatographic Method. Approved by Standard Methods 

Committee 2001. Standard Methods Online. (Available at http://www.standardmethods.org.)

American Public Health Association (APHA). 2005. 21st Edition of 

Standard Methods for the Examination of Water and Wastewater, 

American Public Health Association, 800 I Street, NW., Washington, 

DC 20001-3710.

ASTM International. 2009a. ASTM D 3454-05. Standard Test Method for 

Radium-226 in Water. ASTM International, 100 Barr Harbor Drive, West 

Conshohocken, PA 19428-2959. (Available at http://www.astm.org.)

ASTM International. 2009b. ASTM D 2460-07. Standard Test Method for 

Alpha-Particle-Emitting Isotopes of Radium in Water. ASTM 

International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-

2959. (Available at http://www.astm.org.)

ASTM International. 2009c. ASTM D 5174-07. Standard Test Method for 

Trace Uranium in Water by Pulsed-Laser Phosphorimetry. ASTM 

International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-

2959. (Available at http://www.astm.org.)

ASTM International. 2009d. ASTM D 3649-06. Standard Practice for 

High-Resolution Gamma-Ray Spectrometry in Water. ASTM International, 

100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. (Available 

at http://www.astm.org.)

ASTM International. 2009e. ASTM D 4785-08. Standard Test Method for 

Low-Level Analysis of Iodine Radioisotopes in Water. ASTM 

International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-

2959. (Available at http://www.astm.org.)

ASTM International. 2009f. ASTM D 4107-08. Standard Test Method for 

Tritium in Drinking Water. ASTM International, 100 Barr Harbor 

Drive, West Conshohocken, PA 19428-2959. (Available at http://www.astm.org.)

Best, J. 2010. Memo to the record describing basis for expedited 

approval of Modified Colitag\TM\, Readycult[supreg], and 

Chromocult[supreg] methods for determining E. coli as specified at 

40 CFR 141.402(c)(2). January 27, 2010.

CPI International. 2009. Modified Colitag\TM\ Method. Modified 

Colitag\TM\ Test Method for the Simultaneous Detection of E. coli 

and other Total Coliforms in Water (ATP D05-0035). August 28, 2009. 

5580 Skylane Boulevard, Santa Rosa, CA 95403.

EMD Chemicals (affiliate of Merck KGaA, Darmstadt, Germany). 2000. 

Chromocult[supreg] Method. Chromocult[supreg] Coliform Agar 

Presence/Absence Membrane Filter Test Method for Detection and 

Identification of Coliform Bacteria and Escherichia coli in Finished 

Waters. November, 2000. Version 1.0. 480 S. Democrat Road, 

Gibbstown, NJ 08027-1297.

EMD Chemicals (affiliate of Merck KGaA, Darmstadt, Germany). 2007. 

Readycult[supreg] Method. Readycult[supreg] Coliforms 100 Presence/

Absence Test for Detection and Identification of Coliform Bacteria 

and Escherichia coli in Finished Waters. January, 2007. Version 1.1. 

480 S. Democrat Road, Gibbstown, NJ 08027-1297.

Smith, G. 2010a. Memo to the record describing basis for expedited 

approval of EPA Method 557 for the analysis of dalapon. January 19, 

2010.

Smith, G. 2010b. Memo to the record describing basis for expedited 

approval of Standard Method 6640 B and 6640 B-01 for the analysis of 

dalapon. January 27, 2010.

Umbaugh, L. 2010. Memo to the record describing basis for expedited 

approval of ASTM methods for radiochemicals in water. January 21, 

2010.



[[Page 32299]]



USEPA. 1995. EPA Method 552.2, Determination of Haloacetic Acids and 

Dalapon in Drinking Water by Liquid-Liquid Extraction, 

Derivatization and Gas Chromatography with Electron Capture 

Detection in Methods for the Determination of Organic Compounds in 

Drinking Water, Supplement III, EPA/600/R-95-131, August 1995. 

(Available at http://www.nemi.gov.)

USEPA. 2000. EPA Method 515.4, Determination of Chlorinated Acids in 

Drinking Water by Liquid-Liquid Extraction, Derivatization, and Fast 

Gas Chromatography with Electron Capture Detection, EPA 815-B-00-

001, April 2000. (Available at http://www.epa.gov/safewater/methods/analyticalmethods_ogwdw.html.)

USEPA. 2003. EPA Method 552.3, Determination of Haloacetic Acids and 

Dalapon in Drinking Water by Liquid-Liquid Microextraction, 

Derivatization, and Gas Chromatography with Electron Capture 

Detection, EPA 815-B-03-002, July 2003. (Available at http://www.epa.gov/safewater/methods/analyticalmethods_ogwdw.html.)

USEPA. 2006. National Primary Drinking Water Regulations: Ground 

Water Rule; Final Rule. 71 FR 65574. November 8, 2006.

USEPA. 2007. Expedited Approval of Test Procedures for the Analysis 

of Contaminants Under the Safe Drinking Water Act; Analysis and 

Sampling Procedures. 72 FR 17902. April 10, 2007.

USEPA. 2008. Expedited Approval of Alternative Test Procedures for 

the Analysis of Contaminants Under the Safe Drinking Water Act; 

Analysis and Sampling Procedures. 73 FR 31616. June 3, 2008.

USEPA. 2009a. Expedited Approval of Alternative Test Procedures for 

the Analysis of Contaminants Under the Safe Drinking Water Act; 

Analysis and Sampling Procedures. 74 FR 38348. August 3, 2009.

USEPA. 2009b. Expedited Approval of Alternative Test Procedures for 

the Analysis of Contaminants Under the Safe Drinking Water Act; 

Analysis and Sampling Procedures. 74 FR 57908. November 10, 2009.

USEPA. 2009c. EPA Method 557. Determination of Haloacetic Acids, 

Bromate, and Dalapon in Drinking Water by Ion Chromatography 

Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS), EPA 

815-B-09-012, September 2009. (Available at http://www.epa.gov/safewater/methods/analyticalmethods_ogwdw.html.)

    Zaffiro, A.D. and Zimmerman, M. 2009. EPA Method 557 Research 

Summary, Shaw Environmental Inc., Cincinnati OH. March 2009.



List of Subjects in 40 CFR Part 141



    Chemicals, Environmental protection, Indians-lands, 

Intergovernmental relations, Radiation protection, Reporting and 

recordkeeping requirements, Water supply.



    Dated: June 2, 2010.

Cynthia C. Dougherty,

Director, Officer of Ground Water and Drinking Water.



0

For the reasons stated in the preamble, 40 CFR part 141 is amended as 

follows:



PART 141--NATIONAL PRIMARY DRINKING WATER REGULATIONS



0

1. The authority citation for part 141 continues to read as follows:



    Authority:  42 U.S.C. 300f, 300g-1, 300j-4, and 300j-9.



0

2. Appendix A to subpart C of part 141 is amended as follows:

0

a. By adding the entry for ``Dalapon'' after the entry for 

``Carbofuran'' in the table entitled ``Alternative testing methods for 

contaminants listed at 40 CFR 141.24 (e)(1).''

0

b. By revising the entries for ``Radium 226,'' ``Uranium,'' 

``Radioactive Cesium,'' ``Radioactive Iodine,'' ``Tritium,'' and 

``Gamma Emitters'' in the table entitled ``Alternative testing methods 

for contaminants listed at 40 CFR 141.25(a).''

0

c. By revising all entries in the table entitled ``Alternative Testing 

Methods for Disinfectant Residuals Listed at 40 CFR 141.74(a)(2).''

0

d. By revising all entries in the table entitled ``Alternative Testing 

Methods for Contaminants Listed at 40 CFR 141.131(b)(1).''

0

e. By revising all entries in the table entitled ``Alternative Testing 

Methods for Disinfectant Residuals Listed at 40 CFR 141.131(c)(1).''

0

f. By revising all entries in the table entitled ``Alternative Testing 

Methods for Contaminants Listed at 40 CFR 141.402(c)(2)'' and,

0

g. By adding footnotes 20 and 21 to the table.



Appendix A to Subpart C of Part 141--Alternative Testing Methods 

Approved for Analyses Under the Safe Drinking Water Act.



* * * * *



                   Alternative Testing Methods for Contaminants Listed at 40 CFR 141.24(e)(1)

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

                                                                                SM 21st edition

            Contaminant                    Methodology            EPA method          \1\         SM online \3\

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

 

                                                  * * * * * * *

Dalapon...........................  Ion Chromatography               \14\ 557           6640 B       6640 B-01.

                                     Electrospray Ionization

                                     Tandem Mass Spectrometry

                                     (IC-ESI-MS/MS).

 

                                                  * * * * * * *

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





                     Alternative Testing Methods for Contaminants Listed at 40 CFR 141.25(a)

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

            Contaminant                  Methodology         SM 21st edition \ 1\              ASTM \ 4\

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

Naturally Occurring:

 

                                                  * * * * * * *

    Radium 226....................  Radon emanation.....  7500-Ra C.................  D3454-05.

                                    Radiochemical.......  7500-Ra B.................  D2460-07.

 

                                                  * * * * * * *

    Uranium.......................  Radiochemical.......  7500-U B..................  ..........................

                                    ICP-MS..............  ..........................  D5673-05.

                                    Alpha spectrometry..  7500-U C..................  ..........................

                                    Laser Phosphorimetry  ..........................  D5174-07.

Man-Made:



[[Page 32300]]



 

    Radioactive Cesium............  Radiochemical.......  7500-Cs B.................  ..........................

                                    Gamma Ray             7120......................  D3649-06.

                                     Spectrometry.

    Radioactive Iodine............  Radiochemical.......  7500-I B..................  D3649-06.

                                    ....................  7500-I C..................

                                    ....................  7500-I D..................

                                    Gamma Ray             7120......................  D4785-08.

                                     Spectrometry.

 

                                                  * * * * * * *

    Tritium.......................  Liquid Scintillation  7500-3H B.................  D4107-08.

    Gamma Emitters................  Gamma Ray             7120......................  D3649-06.

                                     Spectrometry.

                                                          7500-Cs B.................  D4785-08.

                                                          7500-I B..................

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



* * * * * * *



              Alternative Testing Methods for Disinfectant Residuals Listed at 40 CFR 141.74(a)(2)

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

                                                   SM 21st Edition

          Residual                Methodology            \1\               ASTM \4\                Other

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

Free Chlorine..............  Amperometric          4500-Cl D......  D 1253-08............

                              Titration.

                             DPD Ferrous           4500-Cl F......

                              Titrimetric.

                             DPD Colorimetric....  4500-Cl G......

                             Syringaldazine        4500-Cl H......

                              (FACTS).

                             On-line Chlorine      ...............  .....................  EPA 334.0.\16\

                              Analyzer.

                             Amperometric Sensor.  ...............  .....................  ChloroSense.\17\

Total Chlorine.............  Amperometric          4500-Cl D......  D 1253-08............

                              Titration.

                             Amperometric          4500-Cl E......

                              Titration (Low

                              level measurement).

                             DPD Ferrous           4500-Cl F......

                              Titrimetric.

                             DPD Colorimetric....  4500-Cl G......

                             Iodometric Electrode  4500-Cl I......

                             On-line Chlorine      ...............  .....................  EPA 334.0.\16\

                              Analyzer.

                             Amperometric Sensor.  ...............  .....................  ChloroSense.\17\

Chlorine Dioxide...........  Amperometric          4500-ClO2 C....

                              Titration.

                             Amperometric          4500-ClO2 E....

                              Titration.

Ozone......................  Indigo Method.......  4500-O3 B......

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







                   Alternative Testing Methods for Contaminants Listed at 40 CFR 141.131(b)(1)

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

         Contaminant               Methodology        EPA Method           ASTM \4\         SM 21st Edition \1\

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

TTHM........................  P&T/GC/MS...........       \9\ 524.3

HAA5........................  LLE (diazomethane)/   ..............  .....................  6251 B.

                               GC/ECD.

                              Ion Chromatography          \14\ 557

                               Electrospray

                               Ionization Tandem

                               Mass Spectrometry

                               (IC-ESI-MS/MS).

Bromate.....................  Two-Dimensional Ion       \18\ 302.0

                               Chromatography (IC).

                              Ion Chromatography          \14\ 557

                               Electrospray

                               Ionization Tandem

                               Mass Spectrometry

                               (IC-ESI-MS/MS).

                              Chemically            ..............  D 6581-08 A.           .....................

                               Suppressed Ion

                               Chromatography.

                              Electrolytically      ..............  D 6581-08 B.           .....................

                               Suppressed Ion

                               Chromatography.

Chlorite....................  Chemically            ..............  D 6581-08 A.

                               Suppressed Ion

                               Chromatography.

                              Electrolytically      ..............  D 6581-08 B.

                               Suppressed Ion

                               Chromatography.

Chlorite--daily monitoring    Amperometric          ..............  .....................  4500-ClO2 E.

 as prescribed in 40 CFR       Titration.

 141.132(b)(2)(i)(A)..

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







              Alternative Testing Methods for Disinfectant Residuals Listed at 40 CFR 141.131(c)(1)

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

                                                   SM 21st Edition

          Residual                Methodology            \1\               ASTM \4\                Other

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

Free Chlorine..............  Amperometric          4500-Cl D......  D 1253-08              .....................

                              Titration.

                             DPD Ferrous           4500-Cl F......

                              Titrimetric.



[[Page 32301]]



 

                             DPD Colorimetric....  4500-Cl G......

                             Syringaldazine        4500-Cl H......

                              (FACTS).

                             Amperometric Sensor.  ...............  .....................  ChloroSense.\17\

                             On-line Chlorine      ...............  .....................  EPA 334.0.\16\

                              Analyzer.

Combined Chlorine..........  Amperometric          4500-Cl D......  D 1253-08............

                              Titration.

                             DPD Ferrous           4500-Cl F......

                              Titrimetric.

                             DPD Colorimetric....  4500-Cl G......

Total Chlorine.............  Amperometric          4500-Cl D......  D 1253-08............

                              Titration.

                             Low level             4500-Cl E......

                              Amperometric

                              Titration.

                             DPD Ferrous           4500-Cl F......

                              Titrimetric.

                             DPD Colorimetric....  4500-Cl G......

                             Iodometric Electrode  4500-Cl I......

                             Amperometric Sensor.  ...............  .....................  ChloroSense.\17\

                             On-line Chlorine      ...............  .....................  EPA 334.0.\16\

                              Analyzer.

Chlorine Dioxide...........  Amperometric Method   4500-ClO2 E.

                              II.

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



* * * * *



                                       Alternative Testing Methods for Contaminants Listed at 40 CFR 141.402(c)(2)

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

              Organism                     Methodology         SM 20th edition \6\    SM 21st edition \1\       SM online \3\              Other

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

E. coli............................  Colilert..............  ......................  9223 B...............  9223 B-97............

                                     Colisure..............  ......................  9223 B...............  9223 B-97............

                                     Colilert-18...........  9223 B................  9223 B...............  9223 B-97............

                                     Readycult[supreg].....  ......................  .....................  .....................  Readycult[supreg].\20

                                                                                                                                    \

                                     Colitag...............  ......................  .....................  .....................  Modified

                                                                                                                                    ColitagTM.\13\

                                     Chromocult[supreg]....  ......................  .....................  .....................  Chromocult[supreg].\2

                                                                                                                                    1\

Enterococci........................  Multiple-Tube           ......................  .....................  9230 B-04............

                                      Technique.

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

* * * * *

\1\ Standard Methods for the Examination of Water and Wastewater, 21st edition (2005). Available from American Public Health Association, 800 I Street,

  NW., Washington, DC 20001-3710.

* * * * *

\3\ Standard Methods Online are available at http://www.standardmethods.org. The year in which each method was approved by the Standard Methods

  Committee is designated by the last two digits in the method number. The methods listed are the only online versions that may be used.

\4\ Available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or http://astm.org. The methods listed are the only

  alternative versions that may be used.

* * * * *

\6\ Standard Methods for the Examination of Water and Wastewater, 20th edition (1998). Available from American Public Health Association, 800 I Street,

  NW., Washington, DC 20001-3710.

* * * * *

\9\ EPA Method 524.3, Version 1.0. ``Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry,''

  June 2009. EPA 815-B-09-009. Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.

* * * * *

\13\ Modified Colitag\TM\; Method, ``Modified ColitagTM Test Method for the Simultaneous Detection of E. coli and other Total Coliforms in Water (ATP

  D05-0035),'' August 28, 2009. Available at http://www.nemi.gov or from CPI International, 5580 Skylane Boulevard, Santa Rosa, CA 95403.

\14\ EPA Method 557. ``Determination of Haloacetic Acids, Bromate, and Dalapon in Drinking Water by Ion Chromatography Electrospray Ionization Tandem

  Mass Spectrometry (IC-ESI-MS/MS),'' September 2009. EPA 815-B-09-012. Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.

* * * * *

\16\ EPA Method 334.0. ``Determination of Residual Chlorine in Drinking Water Using an On-line Chlorine Analyzer,'' September 2009. EPA 815-B-09-013.

  Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.

\17\ ChloroSense. ``Measurement of Free and Total Chlorine in Drinking Water by Palintest ChloroSense,'' August 2009. Available at http://www.nemi.gov

  or from Palintest Ltd, 21 Kenton Lands Road, PO Box 18395, Erlanger, KY 41018.

\18\ EPA Method 302.0. ``Determination of Bromate in Drinking Water using Two-Dimensional Ion Chromatography with Suppressed Conductivity Detection,''

  September 2009. EPA 815-B-09-014. Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.

* * * * *

\20\ Readycult[supreg] Method, ``Readycult[supreg] Coliforms 100 Presence/Absence Test for Detection and Identification of Coliform Bacteria and

  Escherichia coli in Finished Waters,'' January, 2007. Version 1.1. Available from EMD Chemicals (affiliate of Merck KGaA, Darmstadt, Germany), 480 S.

  Democrat Road, Gibbstown, NJ 08027-1297.

\21\ Chromocult[supreg] Method, ``Chromocult[supreg] Coliform Agar Presence/Absence Membrane Filter Test Method for Detection and Identification of

  Coliform Bacteria and Escherichia coli in Finished Waters,'' November, 2000. Version 1.0. EMD Chemicals (affiliate of Merck KGaA, Darmstadt, Germany),

  480 S. Democrat Road, Gibbstown, NJ 08027-1297.





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[FR Doc. 2010-13685 Filed 6-7-10; 8:45 am]

BILLING CODE 6560-50-P