Valid Values - Methods



     
  
  
   
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Category Code Description Source Reference Low level method Active Alias Modified By Modified Date
Analysis EPA160.5 Residue, Settleable Matter, Volumetric, Imhoff Cone USEPA U.S. Environmental Protection Agency Office of Water 600/4-79-020 N Y benf461 10/04/2023
Analysis EPA160.4M Residue, Volatile, Muffle Furnace, Gravimetric, Ignition at 550 Deg-C, modified USEPA U.S.EPA National Exposure Research Laboratory (NERL), Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y benf461 10/04/2023
Analysis EPA160.40-SM2540G Residue, Volatile, Muffle Furnace, Gravimetric, Ignition at 550 Deg-C and Total, Fixed and Volatile Solids in Solid and Semisolid Samples. USEPA U.S.EPA NERL, Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) and Standard Methods for the Examination of Water and Wastewater, APHA-AWWA-WPCF N Y benf461 10/04/2023
Analysis EPA160.4 Residue, Volatile, Muffle Furnace, Gravimetric, Ignition at 550 Deg-C USEPA U.S.EPA National Exposure Research Laboratory (NERL), Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y benf461 10/04/2023
Analysis EPA160.3M Residue, Total, Gravimetric, Dried at 103-105 Deg-C, modified USEPA Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y benf461 10/04/2023
Analysis EPA160.3 Residue, Total, Gravimetric, Dried at 103-105 Deg-C USEPA U.S. EPA, Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y benf461 10/04/2023
Analysis EPA160.2 Residue, Non-Filterable, Gravimetric, Dried at 103-105 Deg-C USEPA U.S. Environmental Protection Agency Office of Water 600/4-79-020 N Y benf461 10/04/2023
Analysis EPA160.1 Residue, Filterable, Gravimeteric, Dried at 180 Deg-C USEPA U.S. Environmental Protection Agency Office of Water 600/4-79-020 N Y benf461 10/04/2023
Measurement EPA150.2 pH, Continuous Monitoring (Electrometric) USEPA Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y benf461 08/27/2024
Analysis or Measurement EPA150.1 pH, Electrometric USEPA U.S. EPA, 1979, 1983. Methods for the Chemical Analysis of Water and Wastes. Environmental Monitoring and Support Laboratory, Office of Research and Development, Cincinnati, OH. (EPA/600/4-79/020). N Y mbac461 09/04/2024
Analysis EPA130.2 Hardness, Total (as CaCO3), Titrimetric, EDTA Ecology-MEL U.S. EPA National Exposure Research Laboratory (NERL) 600/4-79-020 N Y benf461 10/04/2023
Analysis EPA130.1 Hardness, Total (as CaCO3), Colorimetric, Automated EDTA USEPA U.S. EPA National Exposure Research Laboratory (NERL) 600/4-79-020 N Y benf461 10/04/2023
Analysis or Measurement EPA120.1 Specific conductivity (conductance) by conductivity meter @ 25 deg C USEPA Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) N Y mbac461 09/04/2024
Analysis EPA1106.1 Enterococci in Water by Membrane Filtration Using mE-EI Agar USEPA U.S. Environmental Protection Agency Office of Water, EPA-821-R-02-021 N Y benf461 10/04/2023
Analysis EPA1105 E. coli in Water using Nutrient Agar with MUG Membrane Filtration USEPA U.S. Environmental Protection Agency Office of Water 600/4-91-016 N Y benf461 10/04/2023
Analysis EPA1104 E. coli in Water using EC Medium with MUG Multiple Tube Procedure USEPA 600/4-91-016 N Y benf461 10/03/2023
Analysis EPA1103.1 E. coli and Enterococci in Water by Membrane Filtration using Modified mTEC2 Agar USEPA U.S.EPA National Exposure Research Laboratory (NERL), Microbiological and Chemical Exposure Assessment Research Division (MCEARD). N Y benf461 10/03/2023
Analysis EPA110.2 Color, Colorimetric, Platinum-Cobalt (pH 7.6) USEPA U.S. Environmental Protection Agency Office of Water 600/4-79-020 N Y benf461 10/04/2023
Analysis EPA100.2 Determination of Asbestos Structures Over 10 um in Length in Drinking Water by Transmission Electron Microscopy. USEPA U.S.EPA National Exposure Research Lab (NERL), Microbiological and Chemical Exposure Assessment Research Div., Cincinnati OH, EPA/600R-94/134, June 1994. N Y CNEU461 07/14/2025
Analysis EPA-TO-4A Determination of Pesticides and Polychlorinated Biphenyls in Ambient Air Using HIGH Volume Polyurethane Foam (PUF) Sampling Followed by Gas Chromatographic/Multi-Detector Detection (GC/MD), Second Edition USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-TO-3M Volatile Organic Compounds (VOCs) in Ambient Air Using Cryogenic Preconcentration Techniques and Gas Chromatography with Flame Ionization and Electron Capture Detection, modified method, second edition. USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-TO-17P Determination of Volatile Organic Compounds in Ambient Air Using Passive Sampling onto Sorbent Tubes (Modified for Passive vs Active Sampling) USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH. Modified for passive vs active sampling. N Y benf461 10/03/2023
Analysis EPA-TO-17 Determination of Volatile Organic Compounds in Ambient Air Using Active Sampling onto Sorbent Tubes USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-TO-16 Long-Path Open-Path Fourier Transform Infrared Monitoring Of Atmospheric Gases (VOA, Air Toxics) USEPA Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition, (EPA/625/R-96/010b), December 1997. N Y benf461 10/03/2023
Analysis EPA-TO-15M Determination of Volatile Organic Compounds (VOCs) in Air Collected in Specially-Prepared Canisters and Analyzed by Gas Chromatography/ Mass Spectrometry (GC/MS), modified method USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-TO-15-SIM Determination of Volatile Organic Compounds (VOCs) in Air Collected in Specially Prepared Canisters and Analyzed by Gas Chromatography/ Mass Spectrometry (GC/MS), Selective Ion Monitoring (SIM). USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y EPA-TO-15SIM benf461 10/03/2023
Analysis EPA-TO-15 Determination of Volatile Organic Compounds (VOCs) in Air Collected in Specially-Prepared Canisters and Analyzed by Gas Chromatography/ Mass Spectrometry (GC/MS) USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-TO-14 Volatile Organic Compounds (VOCs) In Ambient Air Using Specially Prepared Canisters With Subsequent Analysis By Gas Chromatography (GC) USEPA Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition, (EPA/625/R-96/010b) N Y benf461 10/03/2023
Analysis EPA-TO-13 Polycyclic Aromatic Hydrocarbons (PAHs) in Ambient Air Using Gas Chromatography/Mass Spectrometry (GC/MS) USEPA Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b) N Y benf461 10/03/2023
Analysis EPA-TO-12M Method for the Determination of Non-Methane Organic Compounds (NMOC) in Ambient Air Using Cryogenic Preconcentration and Direct Flame Ionization Detection (PDFID), First Edition, Modified Method. USEPA EPA, 1984. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, First Edition (EPA600/4-89-017). EPA Center for Environmental Research Information, Cincinnati, OH. N Y CNEU461 09/30/2024
Analysis EPA-TO-10A Determination of Pesticides and Polychlorinated Biphenyls in Ambient Air Using LOW Volume Polyurethane Foam (PUF) Sampling Followed by Gas Chromatographic/Multi-Detector Detection (GC/MD), Second Edition USEPA EPA, 1999. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b). EPA Center for Environmental Research Information, Cincinnati, OH N Y benf461 10/03/2023
Analysis EPA-NPS-5 Measurement of N-Methylcarbamoyloxime and N-Methylcarbamate Pesticides in Ground Water by Direct Aquesous Injection High-Performance Liquid Chromatography (HPLC) with Post-Column Derivatization and a Fluorescence Detector USEPA EPA, 1989/1990, Quality Assurance Project Plan For The National Pesticide Survey Of Drinking Water Wells Analytical Method 5 Methyl Carbamates, Appendix A, EPA 810/B-92-005 N Y benf461 10/03/2023
Analysis EPA-NPS-4 Determination of Carbamate Pesticides in Ground Water by High-Performance Liquid Chromatography (HPLC) with an Ultraviolet Detector USEPA EPA, 1989/1990. Quality Assurance Project Plan For The National Pesticide Survey Of Drinking Water Wells Analytical Method 4 Carbamates, Section 9, EPA 810/B-92-004 N Y benf461 10/03/2023
Analysis EPA-NPS-3 Determination of Chlorinated Acid Herbicides in Ground Water by Gas Chromatography (CG) with an Electron Capture Detector USEPA EPA, 1990/1992. Quality Assurance Project Plan For The National Pesticide Survey Of Drinking Water Wells Analytical Method 1 - Nitrogen-Phosphorous Pesticides and Analytical Method 3, Appendix A, EPA 810/B-92-002. Other revisions: EPA515 (2) and EPA515.1 N Y benf461 10/03/2023
Analysis EPA-NPS-1 Determination of Nitrogen and Phosphorus-Containing Pesticides in Ground Water by Gas Chromatography with a Nitrogen-Phosphorus Detector USEPA EPA, 1989/1992. Quality Assurance Project Plan For The National Pesticide Survey Of Drinking Water Wells Analytical Method 1, Section 9, Revision 4, EPA 810/B-92-010. N Y benf461 10/03/2023
Analysis EPA-KAHN88 Lloyd Kahn Method for Determination of Total Organic Carbon (TOC) in Sediment. USEPA Kahn, Lloyd, 1988. Determination of Total Organic Carbon in Sediment. US EPA Region II Environmental Services Division, Edison, NJ, July 27, 1988. N Y benf461 10/03/2023
Bioassay EPA-BIO100.5-2 Life-cycle Test for Measuring the Effects of Sediment-associated Contaminants on Chironomus tentans (Midge), 2nd Ed EPA, 2000. Methods for measuring the toxicity and bioaccumulation of sediment-associated contaminants with freshwater invertebrates, Second Edition, March 2000, EPA/600/R-99/064 Y CNEU461 01/24/2011
Bioassay EPA-BIO100.4-2 Hyalella azteca 42-d Test for Measuring the Effects of Sediment-associated Contaminants on Survival, Growth, and Reproduction, 2nd Ed EPA EPA, 2000. Methods for measuring the toxicity and bioaccumulation of sediment-associated contaminants with freshwater invertebrates, Second Edition, March 2000, EPA/600/R-99/064 Y CNEU461 01/24/2011
Bioassay EPA-BIO100.2-2 Chironomus tentans 10-d Survival and Growth Test for Sediments, 2nd Ed EPA, 2000. Methods for measuring the toxicity and bioaccumulation of sediment-associated contaminants with freshwater invertebrates, Second Edition, March 2000, EPA/600/R-99/064 Y CNEU461 06/20/2013
Bioassay EPA-BIO100.1-2 Hyalella azteca 10-d Survival and Growth Test for Sediments, 2nd Ed EPA, 2000. Methods for measuring the toxicity and bioaccumulation of sediment-associated contaminants with freshwater invertebrates, Second Edition, March 2000, EPA/600/R-99/064 Y CNEU461 05/01/2013
Bioassay EPA-ACE-DMMP91 Evaluation of Dredged Material Proposed for Ocean Disposal Test Manual, EPA/ACE 91 USEPA and USACE, 1991. Evaluation of Dredged Material proposed for ocean disposal test manual. February 1991. EPA-503/8-91/001 Y CNEU461 01/24/2011
Bioassay EPA-ACE-91/LEE-EPA89 Evaluation of Dredged Material Proposed for Ocean Disposal Test Manual, EPA/ACE 91 AND Guidance Manual: Bedded Sediment BioaccumulationTests, EPA 600/X-89/302 Combination method. See original individual methods - EPA-ACE-DMMP91 and Lee-EPA89 Y CNEU461 01/24/2011
Analysis EPA-3C-M Determination of Carbon Dioxide, Methane, Nitrogen, and Oxygen From Stationary Sources by GC with Thermal Conductivity Detector (TCD), Modified for Helium USEPA US EPA Air Programs, 40 CFR, Part 60, Appendix A-2, June 20, 1996 N Y benf461 10/03/2023
Analysis EPA-3C Determination of Carbon Dioxide, Methane, Nitrogen, and Oxygen From Stationary Sources by GC with Thermal Conductivity Detector (TCD). USEPA US EPA Air Programs, 40 CFR, Part 60, Appendix A-2, June 20, 1996. N Y benf461 10/03/2023
Analysis EML-GA-01R Gamma Radioassay USDOE Environmental Measurements Laboratory (EML) Procedures Manual, 28th Edition, Vol. I, Department of Energy Report HASL-300, February 1997 Y CNEU461 05/10/2013
Collection Electrofish-boat Fish collection, electro-shock via boat-mounted unit Y CNEU461 12/30/2014
Collection Electrofish-backpack Fish collection, electro-shock via backpack-mounted unit Y CNEU461 12/01/2014
Analysis EL-EP022HS Microcystins by EnviroLogix Enzyme-Linked Immunoabsorbent Assay (ELISA) High Sensitivity Plate Kit (EP 022 HS) EnviroLogix Inc., 500 Riverside Industrial Parkway, Portland, Maine, http://envirologix.com/, 2008 Y CNEU461 04/29/2008
Analysis EL-ADDA-ABRAXIS Microcystins and Nodularins in Water by Abraxis ADDA Congener-Independent Enzyme-Linked Immunosorbent Assay (ELISA) Test Kit ABRAXIS, 54 Steamwhistle Drive, Warminster, PA 18974, (215) 357-3911, http://www.abraxiskits.com Y CNEU461 03/02/2011
Measurement EH-METER Eh (Oxidation-Reduction Potential (ORP) or REDOX potential) by field meter/electrode N Y EHMETER KKIN461 04/12/2024
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