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<br />TABLE G-11 <br />COMPARISON OF TYPICAL PROJECT SITE <br />WATER QUALITY WITH USPHS <br />DRINKING WATER STANDARDS <br /> <br />• <br />Maximum Upper Middle <br />permissible Davis Culch Fork Valley <br />concentration, <br />Constituents .mg/la TK-2 A-1 TH-9 A-5 <br />Total dissolved solids 500 830 640 785 470 <br />Iron 0.3 1.9 57 1.0 10 <br />btanganese 0.05 <0.05 0.2 <0.05 0.1 <br />Sulfate 250 180 85 260 200 <br />Chloride 250 40 43 49 50 <br />Fluoride 1.Sb 0.6 0.1 0.8 0.3 <br />Nitrate 45 <0.1 <0.1 0.3 <0.1 <br />Silver 0.05 <0.01 <0.01 <0.01 <0.01 <br />Arsenic 0.01 <0.01 <0.01 <0.01 <0.01 <br />Barium 1.0 <1 <1 <1 <1 <br />Lead 0.05 <0.05 <0.05 <0.05 <0.05 <br />Cadmium ~ 0.01 <0.01 <0.01 <0.01 <0.01 <br />Selenium 0.01 <0.01 <0.01 <0.01 <0.01 <br />Chromium 0.05 <0.01 <0.01 <0.01 <0.01 <br />Copper 1.0 <0.1 <0.1 <0.1 <0.1 <br />Cyanide 0.01 <0.01 <0.01 <0.01 <0.01 <br />a. U.S. Public Health Service Drinking,lYater Standards, 1962. <br />b. Recommended upper control limit.. Concentration of 2.0 mg/1 con- <br />stitutes grounds for rejection. Based on estimated annual average <br />of maximum daily air temperatures of 59.5 deg F for site from <br />Table 6-3. <br />G-28 <br />Metcalf & Eddy, 1975 <br />