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Attachment A cont. WATER QUALITY-SUGGESTED METHODS OF ANALYSIS " <br /> CHEMICAL PARAMETERS <br /> UNITS METHOD OF ANALYSIS" <br /> pH(Feld) pH Units field pH meter <br /> Specific Conductance(field) uhmo/cm @ 250C Wheatstone Bridge(Specific Conductance Meter) <br /> Temperature(field) °C Field thermometer <br /> Total Dissolved Solids mg/I Filtrate evaporation;calculation <br /> Total Suspended Solids mg/I Glass fiber filtration 1030-1050 <br /> Oil and Grease mg/I Liquid-liquid extraction with trichlorotrifluoroethane <br /> Sodium Adsorption Ratio — Calculation <br /> Dissovled Oxygen(field) mg/I as 02 Membrane electrode <br /> Bicarbonate(HCO-3) mg/I Titration;electrometric;manual or automated method- <br /> methyl orange atomic absorption <br /> Calcium(Ca+2) mg/l EDTA titration <br /> Carbonate(CO-3) mg/I Titration;electrometric;manual or automated method- <br /> methyl orange <br /> Chloride(Cl-) mg/l Silver nitrate;mercuric nitrate;automated colorimetric- <br /> ferrigcyanide <br /> Magnesium(Mg+2) mg/I Atomic absorption;gravimetric <br /> Ammonia(NH3) mg/I Automated colorimetric phenate;distillation <br /> Nitrate-Nitrite mg/I Automated(cadmium reduction);automated(hydrazine <br /> reduction) <br /> Phosphate(PO4-3 as P) mg/I Direct single reagent;automated single reagent or <br /> stannous chloride <br /> Sodium(Na) mg/I Flame photometric;atomic absorption <br /> Sulfate(SO-4) mg/I Gravimetric;turbidimetric;automated colorimetric-barium <br /> chloranilate <br /> Aluminum(Al) mg/I Atomic absorption <br /> Aresenic(As) mg/l Atomic absorption <br /> Cadmium(Cd) mg/l Atomic absorption <br /> Copper(Cu) mg/1 Atomic absorption <br /> Iron(Fe) mg/l Atomic absorption <br /> Lead(Pb) mg/I Atomic absorption <br /> Manganese(Mn) mg/I Atomic absorption <br /> Mercury(Hg) mg/I Flameless atomic absorption <br /> Molybdenum(Mo) mg/1 Atomic absorption <br /> Selenium(Se) mg/I Atomic absorption <br /> Zinc(Zn) mg/I Atomic absorption <br /> " Additional methods may be substituted with prior approval from the Division. <br /> A-4 <br />