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<br />TABLE to <br />Comparison of 1991 Surf ace Water Quality 'With <br />Livestock Drinking Water Standards <br />1991 Maximum Concept ra [ions <br />Chemical Livestock NPDES NPDES <br />Parameter Standard SW -N1 SW-N3 SW-N7 001 006 <br />Al 5 mg/I 1.02 0.2 3.17 .13 < 5 <br />As 200 ug/l 2 3 5 4 < 1 <br />B 5000 ug/l 180 260 230 280 120 <br />Cd 50 ug/l < 5 < 5 < 5 < 5 < 5 <br />1 <br />Lr 1000 ug/l -- -- -- -- -- <br />Cu 500 ug/l < 10 < 10 < 10 < 10 < 10 <br />F 2 mg/l 1.0 1.1 1.5 0.9 0.62 • <br />Pb 100 ug/l < 20 20 20 20 40 <br />Mn 500 mg/l 0.26 0.97 1.19 0.70 0.03 <br />Ng 10 ug/l < 0.1 < 0.1 < 0.1 c 0.1 c 0.1 <br />N03/N 100 mg/l .11 .12 .O4 < ,02 < .02 <br />N02/N 10 mg/l < .01 < ,01 < ,01 < -01 < .O1 <br /> 2 <br />Se 5 ug/l c 1 < 1 < 1 < 5 < 1 <br />Ca 1000 mg/l 222 403 222 549 133 <br />Na 2000 mg/l 71 96 79 81 28 <br />504 3000-5000 mg/l 856 1667 770 2103 348 <br />Alk__ 2000 mg[l 384 396 458 328 232 <br />1 <br />Parameter not analyzed <br />2 <br />Detection limit of 5 ug/l <br />McKee and Wolf, 1963; Botz and Pedersen, 1976; and National Academy of Sciences, 1974 <br />• <br />20 <br />