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Parameter <br />Sample Date <br />FEDERAL <br />DRINHING <br />WATER <br />STANDARDS <br />COLORADO WATER QUALITY <br />STANDARDS <br />Domestic <br />Domestic <br />Water <br />Water <br />Groundwater <br />units <br />4/1/08 <br />6/2/08 <br />8/4/08 <br />12/21/11 <br />MCL <br />SMCL <br />Supply - <br />Supply - <br />Agricultural <br />Human <br />Table 2 <br />Standards <br />Health <br />Standards <br />Standards <br />Major Ions: <br />Boron <br />mg /L <br />0.75 <br />Chloride <br />mg /L <br />250 <br />Fluoride <br />mg /L <br />4 <br />2 <br />4 <br />2.0 <br />Nitrate +Nitrite -N <br />mg /L <br />10 <br />10 <br />100 <br />Nitrite as N <br />mg /L <br />1 <br />1 <br />100 <br />Sulfate <br />mg /L <br />250 <br />Metals- dissolved <br />Chromium, +6 <br />ug/L <br />0.1 <br />0.1 <br />0.1 <br />Metals -Total <br />Aluminum <br />ug/L <br />0.225 <br /><0.001 <br /><0.001 <br />0.2 <br />5.0 <br />Antimony <br />ug /L <br /><0.001 <br /><0.001 <br /><0.001 <br />0.006 <br />0.006 <br />Arsenic <br />ug /L <br />0.015 <br /><0.001 <br />0.015 <br />0.01 <br />0.01 <br />0.1 <br />Barium <br />ug /L <br /><0.001 <br /><0.001 <br /><0.001 <br />2 <br />2 <br />Beryllium <br />ug /L <br />0.004 <br />0.004 <br />0.1 <br />Cadmium <br />ug /L <br /><0.001 <br /><0.001 <br /><0.001 <br />0.005 <br />0.005 <br />0.01 <br />Chromium, +3 <br />ug /L <br />0.1 <br />0.1 <br />0.1 <br />Copper <br />ug /L <br />0.024 <br />0.02 <br /><0.001 <br />1.3 <br />1 <br />1.3 <br />1 <br />0.2 <br />Iron Total Recov. <br />ug /L <br />0.111 <br /><0.05 <br />0.04 <br />0.3 <br />0.3 <br />5.0 <br />Lead <br />ug /L <br /><0.001 <br /><0.001 <br /><0.001 <br />0.015 <br />0.05 <br />0.1 <br />Manganese <br />ug /L <br />0.01 <br /><0.001 <br /><0.001 <br />0.05 <br />0.05 <br />0.2 <br />Mercury <br />Nickel <br />ug /L <br />ug /L <br />0.002 <br />0.002 <br />0.035 <br />0.01 <br />Radium 226 <br />pCi /L <br />5 <br />5 <br />Selenium <br />ug /L <br />4.4 <br />3.85 <br />3.88 <br />0.05 <br />0.05 <br />0.02 <br />Silver <br />ug /L <br />0.1 <br />0.05 <br />0.1 <br />Thallium <br />ug /L <br />0.002 <br />0.002 <br />Uranium <br />ug /L <br />0.0841 <br />0.084 <br />0.0891 <br />0.03 <br />0.03 <br />Vanadium <br />ug /L <br />0.102 <br /><0.1 <br /><0.1 <br />0.1 <br />Zinc <br />ug /L <br />0.025 <br />0.01 <br />0.01 <br />5 <br />5 <br />2.0 <br />JD -6 Mine Environmental Protection Plan <br />Table 23. Water Quality of Samples Collected from the Lysimeter at the JD -6 Mine <br />Notes <br />4148A.120927 <br />Bold values exceed primary or secondary drinking water standards <br />42 <br />Whetstone Associates • <br />