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Attachment A (cont.) WATER QUALITY -SUGGESTED METHODS OF ANALYSIS <br />CHEMICAL PARAMETERS <br />UNRS <br />METHOD OF ANALYSIS"' <br />pH (field) pH Units field pH meter <br />Specific Conductance (field) uhmo/cm @ 25°C Wheatstone Bridge (Specific Conductance Meter) <br />Temperature (field) °C Field thermometer <br />Total Dissolved Solids mgA Filtrate evaporation; calculation <br />Total Suspended Solids mgA Glass fiber filtration 103° -105° <br />Oil and Grease mgll Liquid-liquid extraction with trichlorotdfluoroethane <br />Sodium Adsorption Ratio - Calculation <br />Dissovled Oxygen (field) mg/I as OZ Membrane electrode <br />Bicarbonate (HCO"s) mg/I Titration; electrometric; manual or automated method - <br />methyl orange atomic absorption <br />Calcium (Ca'2) mgA EDTA tltration <br />Carbonate (CO~a) mgA Titration; eleclromefic; manual or automated method - <br />methyl orange <br />Chloride (CI") mgA Silver nitrate; mercuric nitrate; automated colorimetrio- <br />ferrigcyanide <br />Magnesium (Mg'2) mgA Atomic absorption; gravimeMc <br />Ammonia (NHs) mg/I Automated colorimetric phenate; distillation <br />Nitrate-Nitrite mgA Automated (cadmium reduction); automated (hydrazine <br />reduction) <br />Phosphate (POa' as P) mgA Direct single reagent; automated single reagent or <br />stannous chloride <br />Sodium (Na') mgA Flame photometric; atomic absorption <br />Sulfate (SO"s) mgA Gravimetric; turbidimetric; automated colorimetric -barium <br />chloranilate <br />Aluminum(AI) mg/I Atomic absorption <br />Aresenic (As) mgA Atomic absorption <br />Cadmium (Cd) mgA Atomic absorption <br />Copper (Cu) mg/1 Atomic absorption <br />Iron (Fe) mgA Atomic absorption <br />Lead(Pb) mgA Atomic absorption <br />Manganese (Mn) mgA Atomic absorption <br />Mercury (Hg) mg/I Flameless atomic absorption <br />Molybdenum (Mo) mgA Atomic absorption <br />Selenium (Se) mgll Atomic absorption <br />Zinc (Zn) mgA Atomic absorption <br />' Additional methods may be substituted with prior approval from the Division. <br />A-4 <br />