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<br /> <br />Table No. 6: Inorganic Standards, Animas River below <br />• Elk Creek <br />pH <br />6.5-9.0 <br />As, mg/1 0.05 <br />Cd, 0.0005 <br />Cr III, mg/1 0.05 <br />Cr VI, 0.025 <br />Cu, mg/1 0.035 <br />Pb, 0.043 <br /> <br />Mn(sol), O..D5 <br />Hg, mg/1 0.0005 <br />Ni, 0.05 <br />Se, 0.01 <br />Ag, 0.0001 <br />Zn, mg/1 0.47 <br />Fe(total), mg/1 7.15 <br />Mn(total), 1.0 <br />Cyanide(free),mg/1 0.005 <br />S as H2S 0.002 <br />Sulfate, mg/1 250.0 <br />Table No. 7: Colorado Inorganic and Metals Standards <br />Class 1 Domestic Water Supply <br />Paramater EPA STANDARD <br />• Ammonia, mg/1 0.5 Primary <br />Free cyanide, mg/1 D.2 Primary <br />Nitrate, mg/1 10 Primary <br />Nitrite, mg/1 1 Primary <br />Sulfide as H2S, mg/1 0.05 Secondary <br />Chloride, mg/1 250 Secondary <br />Sulfate, mg/1 250 Secondary <br />Arsenic, mgll 0.05 Primary <br />Barium, mg/1 1.0 Primary <br />Cadmium, mg/1 0.010 Primary <br />Chromium, total mg/1 0.05 Primary <br />Copper, mg/1 1.0 Secondary <br />Iron, mg/1 D.3 Secondary <br />Lead, mg/1 0.05 Primary <br />Manganese, mg/1 0.05 Secondary <br />Mercury, mg/1 0.002 Primary <br />Selenium, mg/1 0.01 Primary <br />Silver, mg/1 0.05 Primary <br />Zinc, mgJl 5.0 Secondary <br />pH, s.u. 5.0 - 9.0 <br />Ground waters have not been classified by the State other <br />than Class 1 Domestic Water Supply which is defined as <br />• -16- <br /> <br />