Texas Commission on Environmental Quality

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1 Matrix: Drinking Water Method EPA 1603 (modified mtec) AB ID Method ID Escherichia coli (enumeration) TX Method EPA AB ID Method ID Arsenic TX Beryllium TX Cadmium TX Chromium TX Copper TX Lead TX Magnesium TX Nickel TX Selenium TX Sodium TX Method EPA AB ID Method ID Aluminum TX Antimony TX Arsenic TX Barium TX Beryllium TX Boron TX Cadmium TX Chromium TX Cobalt TX Copper TX Iron TX Lead TX Magnesium TX Manganese TX Page 1 of 10

2 Matrix: Drinking Water Nickel TX Potassium TX Selenium TX Silica as SiO2 TX Silver TX Sodium TX Strontium TX Titanium TX Vanadium TX Zinc TX Method EPA AB ID Method ID Mercury TX Method EPA AB ID Method ID Chloride TX Chlorite TX Fluoride TX Nitrate as N TX Nitrite as N TX Sulfate TX Method EPA B AB ID Method ID Bromide TX Chlorate TX Method EPA AB ID Method ID Sulfate TX Method SM 2340 C AB ID Method ID Total hardness as CaCO3 TX Page 2 of 10

3 Matrix: Drinking Water Method SM 2510 B AB ID Method ID Conductivity TX Method SM 2540 C AB ID Method ID Residue-filterable (TDS) TX Method SM 4500-CN E AB ID Method ID Total Cyanide TX Method SM 4500-F C AB ID Method ID Fluoride TX Method SM 4500-NO2 B AB ID Method ID Nitrite as N TX Method SM 9215 B AB ID Method ID Heterotrophic plate count TX Method SM 9222 A, B, C AB ID Method ID Total coliforms TX Method SM 9223 AB ID Method ID Total coliforms TX Page 3 of 10

4 Method EPA AB ID Method ID ph TX Method EPA AB ID Method ID Residue-volatile TX Method EPA 1603 (mtec mod) AB ID Method ID Escherichia coli (enumeration) TX Method EPA 1664 AB ID Method ID n-hexane Extractable Material (HEM) (O&G) TX Silica Gel Treated n-hexane Extractable Material (SGT-HEM) TX Method EPA AB ID Method ID Aluminum TX Arsenic TX Beryllium TX Boron TX Cadmium TX Chromium TX Cobalt TX Copper TX Iron TX Lead TX Magnesium TX Manganese TX Molybdenum TX Nickel TX Selenium TX Sodium TX Page 4 of 10

5 Vanadium TX Zinc TX Method EPA AB ID Method ID Aluminum TX Antimony TX Arsenic TX Barium TX Beryllium TX Boron TX Cadmium TX Calcium TX Chromium TX Cobalt TX Copper TX Iron TX Lead TX Magnesium TX Manganese TX Molybdenum TX Nickel TX Potassium TX Selenium TX Silica as SiO2 TX Silver TX Sodium TX Strontium TX Thallium TX Tin TX Titanium TX Page 5 of 10

6 Vanadium TX Zinc TX Method EPA AB ID Method ID Mercury TX Method EPA AB ID Method ID Bromide TX Chloride TX Fluoride TX Nitrate as N TX Nitrate-nitrite TX Orthophosphate as P TX Sulfate TX Method EPA AB ID Method ID Sulfate TX Method SM 2130 B AB ID Method ID Turbidity TX Method SM 2320 B AB ID Method ID Alkalinity as CaCO3 TX Method SM 2340 B AB ID Method ID Total hardness as CaCO3 TX Method SM 2340 C AB ID Method ID Total hardness as CaCO3 TX Method SM 2510 B AB ID Method ID Page 6 of 10

7 Conductivity TX Method SM 2540 C AB ID Method ID Residue-filterable (TDS) TX Method SM 2540 D AB ID Method ID Residue-nonfilterable (TSS) TX Method SM 2540 F AB ID Method ID Residue-settleable TX Method SM 4500-Cl F AB ID Method ID Total residual chlorine TX Method SM 4500-Cl B AB ID Method ID Chloride TX Method SM 4500-CN E AB ID Method ID Total Cyanide TX Method SM 4500-F C AB ID Method ID Fluoride TX Method SM 4500-H+ B AB ID Method ID ph TX Method SM 4500-NH3 D AB ID Method ID Ammonia as N TX Kjeldahl Nitrogen (Total Kjeldahl Nitrogen-TKN) TX Method SM 4500-NO2 B AB ID Method ID Nitrite as N TX Page 7 of 10

8 Method SM 4500-NO3 E AB ID Method ID Nitrite as N TX Method SM 4500-O C AB ID Method ID Oxygen, dissolved TX Method SM 4500-O G AB ID Method ID Oxygen, dissolved TX Method SM 4500-P E AB ID Method ID Orthophosphate as P TX Phosphorus TX Method SM 5210 B AB ID Method ID Biochemical oxygen demand (BOD) TX Carbonaceous BOD, CBOD TX Method SM 5220 D AB ID Method ID Chemical oxygen demand (COD) TX Method SM 5310 B AB ID Method ID Total Organic Carbon (TOC) TX Method SM 9215 B AB ID Method ID Heterotrophic plate count TX Method SM 9222 B AB ID Method ID Total coliforms TX Method SM 9222 D AB ID Method ID Fecal coliforms (enumeration) TX Page 8 of 10

9 Method SM 9230 C AB ID Method ID Enterococci TX Fecal streptococci TX Page 9 of 10

10 Matrix: Solid & Chemical Materials Method EPA AB ID Method ID Bromide TX Chloride TX Nitrate-nitrite TX Nitrite as N TX Orthophosphate as P TX Sulfate TX Method EPA 6010 AB ID Method ID Aluminum TX Antimony TX Barium TX Calcium TX Iron TX Phosphorus TX Potassium TX Silica as SiO2 TX Silver TX Tin TX Zinc TX Method EPA 7471 AB ID Method ID Mercury TX Method EPA 9045 AB ID Method ID ph TX Method SM 2510 B AB ID Method ID Conductivity TX Page 10 of 10

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