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<br /> <br /> <br /> Table 2 <br />Comparison of Water Quality Data Near Mine No. 3 <br /> Mean Values, 1990 Data <br /> Foidel Middle Middle Trout In-Strm. <br /> Dwnstrm. Upstrm. Dwnstrm. Dwnstrm. Standard <br />Parameter Units 900 <br />------ 700 <br />-------- 29 <br />-------- 69 <br />-------- <br />-------- <br />------------------- <br />Temperature ----- <br />°C -- <br />17.0 14.2 16.8 22.5 20 (+3) <br />Conductivity, field umhos/ 2338 712 1758 ~ 430 <br />Conductivity, lab cm 2400 768 1532 480 <br />pH, field pH 7.78 8.18 7.86 8.22 6.5 -9.0 <br />Hardness as CaC03 mg/L 1544 374 944 ~ 275 <br />Solids, dissolved mg/L 2322 519 1345 330 <br />Solids, suspended mg/L 14 -18.5 9.5 -6 <br />SAR -- 1.09 0.79 0.77 0.25 <br />Calcium, dissolved mg/L 336 86 194 67 <br />Magnesium, diss. mg/L 172 38 112 27 <br />• Sodium, dissolved mg/L 98 36 54 10 <br />Bicarbonate as HC03 mg/L 358 278 280 202 <br />Sulfate mg/L 1430 212 671 98 <br />Cadmium, tot. rec. ug/L -0.28 -0.3 -0.22 -0.27 1.00 <br />Mercury, tot. rec. ug/L -0.10 -0.10 -0.10 -0.10 0.05 <br />Selenium, tot. rec. ug/L -1 -1 -1 -1 20 <br />Silver, tot. rec. ug/L -0.25 -0.10 -0.22 -0.10 0.10 <br />Zinc, tot. rec. ug/L -18 -22 -32 -10 50 <br />Iron, tot. rec. ug/L 688 425 442 493 1000 <br />Manganese, diss. ug/L 180 70 110 <br />Mang., tot. rec. ug/L 818 82 318 40 1000 <br />Moly., tot. rec. ug/L -43 -42 -42 -50 <br />Ammonium, tot. as N mg/L 0.13 0.105 -0.105 -0.07 <br />Ammonia, free as N mg/L 0.002 -0.005 -0.003 -0.004 0.02 <br />Nitrate as N mg/L -0.355 -0.025 -0.020 -0.020 <br />N03 + N02 as N mg/L -0.36 -0.02 -0.02 -0.02 <br />Ortho-P as P, diss. mg/L 0.022 0.019 -0.018 -0.011 <br />Notes: 1) "-" means less than <br />2) Standards for iron and manganese are for "total" <br />3) Mean are calculated using the det ection limit for <br />below det ection limit va lues <br />~J <br />