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• <br />• <br />TABLE 2.5-I I -Comparison of Water Quality with Recommended Criteria -Oak Creek <br /> Number OK-A <br /> <br />Species of <br />Samples Criterion* <br />rng/I <br />x <br />~ <br />Alurninurn 16 1.5 < 0.7 0 <br />Arsenic 16 0.05 < 0.004 0 <br />Barium 16 I.0 < 0.2 0 <br />Boron 16 5.0 < 0.23 0 <br />Cadrniurn 16 0.01 < 0.005 I <br />Calcium 16 250 85.5 0 <br />Chromium 16 0.05 < 0.08 (-) <br />Copper 16 0.05 < 0.04 (-) <br />Fluorine 16 1.4 0.49 2 <br />Iron (Dissolved) 12 0.3 < 0.35 5 <br />Lead 16 0.03 < 0.04 0 <br />Magnesium 16 250 35.3 0 <br />Manganese 16 0.05 < 0.13 II <br />Mercury 16 0.002 < 0.001 I <br />Nickel 16 0.1 < 0.08 3 <br />Nitrate 16 10 4.19 0 <br />Selenium 16 0.01 < 0.002 0 <br />Silver 16 0.05 < 0.07 5 <br />Sodium 16 250 26.0 0 <br />Zinc 16 0.1 < 0.09 4 <br />OK-B <br />z N <br />< 0.8 I <br />< 0.004 0 <br />< 0.2 0 <br />< 0.23 0 <br />< 0.004 0 <br />86.2 0 <br />< 0.08 (-) <br />< 0.04 (-) <br />0.54 2 <br />< 0.47 5 <br />< 0.04 0 <br />35.3 0 <br />< 0.09 I I <br />< 0.001 0 <br />< 0.08 2 <br />3.79 0 <br />< 0.002 0 <br />< 0.05 2 <br />28.8 0 <br />< 0.18 3 <br />*Mosi restrictive criterion based on human consumption or marine life recornrnended <br />by the Environmental Studies Board, National Academy of Sciences and National <br />Academy of Engineering in "Water Quality Criteria 1972," EPA-R3-73-033, 3/73. <br />(I) z = arithmetic mean <br />N = number of times recommended value was exceeded <br />(-) = recornrnended value lower Than sensitivity of laboratory procedure <br /> <br />Revised 7-81 <br />2. S-4 I <br />