1990-03-27_REPORT - C1981013 (5)

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TABLE 2-9 WYOMING FUEL COMPANY NEW ELK/GOLDEN EAGLE MINES Groundwater PAW-6 Data Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Entry Value Value Average Value Value Average Value Value Average Value Value Average Value Value Average Value Value Average SAMPLING DATE 1984 1984 1984 1985 1985 1985 1986 1986 1986 1987 1987 1987 1988 1988 1988 1989 1989 1989 Parameter Units ----- Water Level feet 5.08 6.28 5.73 5.24 6.32 5.96 5.8 8.8 6.6 4.9 8 6.28 6.1 7.1 6.54 7.00 8.25 7.67 pH standard 6.8 7.8 7.2 6.7 7.9 7.5 7 7.9 7.4 6.9 7.8 7.38 0 8.4 6.10 7.10 7.90 7.59 Conductivity umhos/cm 504 839 710 606 898 755 680 914 828 810 969 896.2 635 886 731.25 680.00 1044.00 830.25 Temperature 0 C 6.5 15.5 10.5 6.6 12.2 9.1 7.3 13.4 10.9 5.8 12.7 9 7.1 12.7 9.63 7.50 12.40 10.65 Dissolved Oxygen ppm - - - - - - - - - - Iron mg/L <.05 <.05 2.04 0.88 0.06 36 13.51 0.015 141 39.56 0.02 0.36 0.18 TSS mg/L - 593 117 4750 2094 654 1850 1338 496 3470 1791.5 145.00 453.00 235.25 TDS mg/L 517 354 1460 680 369 550 472 471 576 524.25 0 551 348.25 399.00 639.00 498.25 TCS mg/1 - 14 14 664 329 182 390 306 237 586 362.75 104.00 185.00 133.33 Carbonate mg/l <1 <1 0 1 1 0.5 0.5 0.5 0 0.5 0.375 0.50 0.50 0.50 Bicarbonate mg/t 507 352 566 465 426 537 468 459 530 498.75 0 524 325.75 350.00 580.00 455.00 Manganese mg/l 0.29 0.12 0.29 0.17 0.26 2.54 1.34 0.25 0.99 0.65 0.005 1.27 0.60 0.01 0.45 0.15 Sodium mg/L 123 97 153 126 108 148 128 136 143 139.75 83 141 116.5 78.00 171.00 110.75 Chloride mg/L 10.8 6.8 7.9 11.7 5.2 11.10 Sulfate mg/L 55 49 48 64 84 28.00 Calcium mg/L 48 43 41 49 42 62.00 Magnesium mg/L 18 13 17 17.6 15.8 20.00 Potassium mg/l 2.9 2.07 2.3 2.35 1.96 2.40 Hydroxide mg/L - - <.05 0 0.25 0.1875 0 0.25 0.07 0.25 0.50 0.38 Fluoride mg/L 1.4 0.8 0 0.9 0.53 0.70 1.00 0.82 Lead mg/l <.01 <.O1 0.005 0.025 0.03 Selenium mg/L <.O1 - <.01 0.005 0.035 0.03 SAR standard 3.84 3.95 4.6 4.4 3.55 4.83