Analytical Methods Approved for Drinking Water Compliance Monitoring of Organic Contaminants Analysis for the following organic contaminants shall be conducted in accordance with the methods in the following table, or their equivalent as determined by EPA. The methods and monitoring requirements for these contaminants are specified in 40 CFR 141.24. Additional methods are listed in Appendix A to Subpart C of Part 141. The CFR is the legal reference for approved methods and takes precedence over this table. The table should accurately reflect the analytical methods information published in 40 CFR 141. Organic Contaminants: 1,1,1-Trichloroethane Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index SEPA United States Environmental Protection Agency Office of Water (MS - 4606 M) EPA 815-B-19-003 April 2019 ------- Page 2 of 36 1,1,2-Trichloroethane Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index lylene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- Page 3 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas 1,2-Dichlorobenzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 1,2,4-Trichlorobenzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by June 2009 EPA 815-B-09-009 EPA 815-B-09-009 ------- Page 4 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Capillary Column Gas Chromatography/Mass Spectrometry 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 1,2-Dichloroethane 1,2-Dichloropropane lane Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index ------- Page 5 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 1,4-Dichlorobenzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- Page 6 of 36 2,3,7,8-TCDD (Dioxin") Method Organization Reference Title Date EPA Publication Number Source of Method 1613 EPA Tetra- through Octa-Chlorinated Dioxins and Furans by Isotope- Dilution HRGC/HRMS October 1994 E PA/82 l-B-94-005 E PA/82 l-B-94-005 2,4,5-TP (Silvex) Accurate determination of the c ilorinated esters requires hydrolysis of the sample as described in the approved methods. Method Organization Reference Title Date EPA Publication Number Source of Method D5317-93 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1993 ASTM International D5317-98 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1998 ASTM International 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.2, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 ------- Page 7 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 555, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement II August 1992 EPA/600/R-92/129 National Environmental Methods Index 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2001 Standard Methods 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2006 Standard Methods 2,4-D (as acid, salts and esters) Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in the approved methods. Method Organization Reference Title Date EPA Publication Number Source of Method D5317-93 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1993 ASTM International D5317-98 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water 1998 ASTM International ------- Page 8 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method by Gas Chromatography with an Electron Capture Detector 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.2, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 555, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement II August 1992 E PA/600/R-92/129 National Environmental Methods Index 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2001 Standard Methods 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 2006 Standard Methods ------- Page 9 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Subpart C of Part 141 are approved. Alachlor Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality control criterial are met. Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 507, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Atrazine Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality control criterial are met. Note regarding Syngenta Method AG-625: This method may not be used for the analysis of atrazine in any system where chlorine dioxide is used for drinking water treatment. In samples from all other systems, any result for atrazine that is greater than one-half the MCL (i.e. greater than 1.5 ng/L) must be confirmed ------- Page 10 of 36 using another approved method for atrazine and should use additional volume of the original sample collected for compliance monitoring. In instances where a result from Syngenta Method AG-625 triggers such confirmatory testing, the confirmatory result is to be used to determine compliance. Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 507, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 536 EPA Determination ofTriazine Pesticides and their Degradates in Drinking Water by Liquid Chromatography Electrospray Ionization Tandem Mass Spectrometry (LC/ESI-MS/MS) October 2007 EPA 815-B-07-002 EPA 815-B-07-002 523 EPA Determination ofTriazine Pesticides and their Degradates in Drinking Water by Gas Chromatography/Mass Spectrometry (GC/MS) February 2011 EPA 815-R-11-002 EPA 815-R-11-002 Syngenta AG-625 Syngenta Crop Protection, Inc. Atrazine in Drinking Water by Immunoassay See note under the "Atrazine" header above. February 2001 National Environmental Methods Index ------- Page 11 of 36 Benzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 Benzo[a]pyrene Method Organization Reference Title Date EPA Publication Number Source of Method 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 EPA/600/R-12/010 EPA/600/R-12/010 550 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement 1 July 1990 EPA/600/4-90/020 National Environmental Methods Index 550.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement 1 July 1990 EPA/600/4-90/020 National Environmental Methods Index ------- Page 12 of 36 Carbofuran Carbon Tetrac Method Organization Reference Title Date EPA Publication Number Source of Method 531.1, Rev. 3.1 EPA In Methods for the Determination of Organic Compound in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 531.2, Rev. 1.0 EPA Measurement of N-Methyl- carbamoyloximes and N- Methylcarbamates in Water by Direct Aqueous Injection HPLC with Post Column Derivatization September 2001 EPA 815/B/01/002 EPA 815/B/01/002 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6610 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods lloride Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas June 2009 EPA 815-B-09-009 EPA 815-B-09-009 ------- Page 13 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Chromatography/Mass Spectrometry 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Chlordane Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 ------- Page 14 of 36 Chlorobenzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 cis-Dichloroethylene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- Page 15 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Spectrometry using Nitrogen Purge Gas Dalapon Method Organization Reference Title Date EPA Publication Number Source of Method 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 552.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking 1/l/ater-Supplement II August 1992 E PA/600/R-92-129 National Environmental Methods Index 552.2, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking 1/l/ater-Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 552.3, Rev. 1.0 EPA Determination of Haloacetic Acids and Dalapon in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Gas Chromatography with Electron Capture Detection July 2003 EPA 815-B-03-002 EPA 815-B-03-002 557 EPA 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 EPA 815-B-09-012 ------- Page 16 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2001 Standard Methods 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2006 Standard Methods D i (2 - ethylh exylladipate Method Organization Reference Title Date EPA Publication Number Source of Method 506, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking l/l/ater-Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 EPA/600/R-12/010 EPA/600/R-12/010 ------- Page 17 of 36 D i (2 - ethylh exyl)phthalate Method Organization Reference Title Date EPA Publication Number Source of Method 506, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking 1/l/ater-Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 EPA/600/R-12/010 EPA/600/R-12/010 Dibromochloropropane (DBCP) Method Organization Reference Title Date EPA Publication Number Source of Method 504.1, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Dichloromethane Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index ------- Page 18 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 Dinoseb Accurate determination of the c ilorinated esters requires hydrolysis of the sample as described in the approved methods. Method Organization Reference Title Date EPA Publication Number Source of Method 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.2, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 555, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement II August 1992 EPA/600/R-92/129 National Environmental Methods Index ------- Page 19 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2001 Standard Methods 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2006 Standard Methods Diquat Method Organization Reference Title Date EPA Publication Number Source of Method 549.2, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index Endothall Method Organization Reference Title Date EPA Publication Number Source of Method 548.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water, Supplement II August 1992 EPA/600/R-92/129 National Environmental Methods Index ------- Page 20 of 36 Endrin Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination of Semivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Ethylbenzene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 ------- Page 21 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 Ethylene DibromideTEDB] Method Organization Reference Title Date EPA Publication Number Source of Method 504.1, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Glyphosate Method Organization Reference Title Date EPA Publication Number Source of Method 547 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement 1 July 1990 EPA/600/4-90/020 National Environmental Methods Index 6651 Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 6651 Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 6651 Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods ------- Page 22 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 6651 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6651 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6651 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6651 B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 6651 B-05 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2005 Standard Methods Heptachlor Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 23 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Heptachlor Epoxide Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 24 of 36 Hexachlorobenzene Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index H exachlor o cyclopentadiene Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 25 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Lindane Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination of Semivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 26 of 36 Methoxychlor Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Oxamyl Method Organization Reference Title Date EPA Publication Number Source of Method 531.1, Rev. 3.1 EPA In Methods for the Determination of Organic Compound in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 531.2, Rev. 1.0 EPA Measurement of N-Methyl- carbamoyloximes and N- Methylcarbamates in Water by Direct Aqueous Injection HPLC with Post Column Derivatization September 2001 EPA 815/B/01/002 EPA 815/B/01/002 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods ------- Page 27 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6610 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6610 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods PCBs (as Arochlors) PCBs are qualitatively identified as Aroclors and measured for compliance purposes as decachlorobiphenyl. Users of Method 505 may have more difficulty achieving the required detection levels than users of Methods 508.1, 525.2, 525.3 or 508. Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 ------- Page 28 of 36 PCBs (as decachlorobiphenyl) PCBs are only measured for compliance purposes as decachlorobiphenyl. Method Organization Reference Title Date EPA Publication Number Source of Method 508A, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 National Environmental Methods Index Pentachlorophenol Method Organization Reference Title Date EPA Publication Number Source of Method D5317-93 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1993 ASTM International D5317-98 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1998 ASTM International 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.2, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 29 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 555, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement II August 1992 EPA/600/R-92/129 National Environmental Methods Index 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2001 Standard Methods 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2006 Standard Methods Picloram Method Organization Reference Title Date EPA Publication Number Source of Method D5317-93 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water 1993 ASTM International ------- Page 30 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method by Gas Chromatography with an Electron Capture Detector D5317-98 ASTM International Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector 1998 ASTM International 515.1, Rev. 4.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water December 1988, Revised July 1991 EPA/600/4-88-039 EPA/600/4-88-039 515.2, Rev. 1.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 515.3, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 515.4, Rev. 1.0 EPA Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Fast Gas Chromatography with Electron Capture Detection April 2000 EPA/815/B-00/001 EPA/815/B-00/001 555, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement II August 1992 EPA/600/R-92/129 National Environmental Methods Index 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 6640 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 6640 B-01 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 2001 Standard Methods ------- Page 31 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Subpart C of Part 141 are approved. 6640 B-06 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2006 Standard Methods Simazine Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality control criterial are met. Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 507, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 536 EPA Determination ofTriazine Pesticides and their Degradates in Drinking Water by Liquid October 2007 EPA 815-B-07-002 EPA 815-B-07-002 ------- Page 32 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Chromatography Electrospray Ionization Tandem Mass Spectrometry (LC/ESI-MS/MS) 523 EPA Determination ofTriazine Pesticides and their Degradates in Drinking Water by Gas Chromatography/Mass Spectrometry (GC/MS) February 2011 EPA 815-R-11-002 EPA 815-R-11-002 Styrene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 T etrachlor oethylene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index ------- Page 33 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Toluene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- Page 34 of 36 Toxaphene Method Organization Reference Title Date EPA Publication Number Source of Method 505, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508, Rev. 3.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 508.1, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 E PA/600/R-95-131 National Environmental Methods Index 525.2, Rev. 2.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 525.3 EPA Determination ofSemivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS) February 2012 E P A/600/R-12/010 EPA/600/R-12/010 trans-Dichloroethylene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- Page 35 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method Chromatography/Mass Spectrometry using Nitrogen Purge Gas Trichloroethylene Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 551.1, Rev. 1.0 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index Vinyl Chloride Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index ------- Page 36 of 36 Method Organization Reference Title Date EPA Publication Number Source of Method 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 Xylenes (total) Method Organization Reference Title Date EPA Publication Number Source of Method 502.2, Rev. 2.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Method Index 524.2, Rev. 4.1 EPA In Methods for the Determination of Organic Compounds in Drinking Water - Supplement III August 1995 EPA/600/R-95-131 National Environmental Methods Index 524.3 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry June 2009 EPA 815-B-09-009 EPA 815-B-09-009 524.4 EPA Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry using Nitrogen Purge Gas May 2013 EPA 815-R-13-002 EPA 815-R-13-002 ------- |