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Attachment A (cunt.) WATER QUALITY - SUGGESTED METHODS OF ANALYSIS <br />CHEMICAL PARAMETERS <br />UNITS <br />METHOD OF ANALYSIS'" <br />pH (field) <br />pH Units <br />field pH meter <br />Specific Conductance (field) <br />uhmo /cm @ 25 °C <br />Wheatstone Bridge (Specific Conductance Meter) <br />Temperature (field) <br />°C <br />Field thermometer <br />Total Dissolved Solids <br />mg /I <br />Filtrate evaporation; calculation <br />Total Suspended Solids <br />mg /I <br />Glass fiber filtration 1030 -105° <br />Oil and Grease <br />mg /I <br />Liquid- liquid extraction with trichlorotrifluoroethane <br />Sodium Adsorption Ratio <br />— <br />Calculation <br />Dissolved Oxygen (field) <br />mg /I as 02 <br />Membrane electrode <br />Bicarbonate (HCO-3) <br />mg /I <br />Titration; electrometric; manual or automated method - <br />methyl orange atomic absorption <br />Calcium (Ca 12) <br />mg /l <br />EDTA titration <br />Carbonate (CO-3) <br />mg /I <br />Titration; electrometric; manual or automated method - <br />methyl orange <br />Chloride (Cl-) <br />mg /I <br />Silver nitrate; mercuric nitrate; automated colorimetric- <br />ferrigcyanide <br />Magnesium (Mg +2) <br />mg /I <br />Atomic absorption; gravimetric <br />Ammonia (NH3) <br />mg/I <br />Automated colorimetric phenate; distillation <br />Nitrate- Nitrite <br />mg /1 <br />Automated (cadmium reduction); automated (hydrazine <br />reduction) <br />Phosphate (PO4 3 as P) <br />mg /I <br />Direct single reagent; automated single reagent or <br />stannous chloride <br />Sodium (Na') <br />mg /I <br />Flame photometric; atomic absorption <br />Sulfate (SO-4) <br />mg /I <br />Gravimetric; turbid metric; automated colorimetric - barium <br />chloranilate <br />Aluminum (AI) <br />mg /I <br />Atomic absorption <br />Arsenic (As) <br />mg /I <br />Atomic absorption <br />Cadmium (Cd) <br />mg /I <br />Atomic absorption <br />Copper (Cu) <br />mg /1 <br />Atomic absorption <br />Iron (Fe) <br />mg /I <br />Atomic absorption <br />Lead (Pb) <br />mg /l <br />Atomic absorption <br />Manganese (Mn) <br />mg /I <br />Atomic absorption <br />Mercury (Hg) <br />mg /I <br />Flameless atomic absorption <br />Molybdenum (Mo) <br />mg /I <br />Atomic absorption <br />Selenium (Se) <br />mg /I <br />Atomic absorption <br />Zinc (Zn) <br />mg /I <br />Atomic absorption <br />Additional methods may be substituted with prior approval from the Division. <br />A -4 <br />