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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />[I <br /> <br />Section 2 . Study Area Descriptions <br /> <br /> m VI <br /> Variable Max.Contam. Average Maximum Minimum <br /> Level <br />Primary SWDA <br />Standard <br />Adjusted gross alpha, 15 (proposed) 10.5 27 0 <br /> pCiIl * <br />Antimony 0.006 ND ND ND <br />Arsenic 0.05 0.0006 0.006 ND <br />Barium 1 0.027 0.031 0.024 <br />Beryllium 0.004 ND ND ND <br />Cadmium 0.01 ND ND ND <br />Chromium 0.1 ND ND ND <br />Cyanide 0.2 0.0025 0.016 ND <br />Plouride 4 0.588 0.69 0.4 <br />Mercury 0.002 ND ND ND <br />Nickel 0.1 ND ND ND <br />Nitrate, as N 10 8.3 11.0 5.7 <br />Selenium 0.05 0.009 0.017 0.007 <br />Thallium 0.002 ND ND ND <br />Uranium, pill 30 (Proposed) 60 78 45 <br />Secondary SDW A <br />Standard <br />Plouride 2 0.588 0.69 0.4 <br />Iron 0.3 0.056 ND 0.0076 <br />Manganese 0.05 0.18 0.39 0.06 <br />Sulfate 250 944 1100 810 <br />Total Dissolved Solids 500 1855 2200 1600 <br />Zinc 5 0.0011 0.012 ND <br />Action Level Variables <br /> Copper 1.3 0.009 0.02 0.005 <br /> Lead 0.015 0.00046 0.005 ND <br /> <br />TABLE 2.5 REPORTED WATER QUALITY <br />( 11 AS ION EXCEPT AS NOTED) <br /> <br />ND - Non-detect. The constituent may have been present, but at concentrations <br />below the minimum testing limit. <br />* Data Source: Three samples taken for the Colorado Department of Health, 1989. <br /> <br />MONTGOMERY WATSON <br /> <br />Page 2-8 <br />