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w <br />• NUCLA MINE GROUND WATER QUALITY~ISTICS REPORT <br /> GEOLOGIC UNIT OVERBURDEN AND DAKOTA COAL <br /> OBSERVA TIONS MEAN ST.DEV. MIN MAX <br /> FIELD PARAMETERS <br /> CONDUCTIVIIY (UMIIOS/CM) 14 2574.00 810.24 16.00 3250.00 <br /> PH (IINITS) 15 6.67 6.40 7.20 <br /> HATER TEMPCRATURE (DEG C) 14 14.49 2.08 12.00 20.00 <br /> DEPTH TO WAFER (FT) 15 38.31 4.38 31.11 46.31 <br /> LABORATORY PARAMETERS <br /> ALKALINITY, DISS. (MG/L OF CAC03) 1G 373.63 50.61 299.00 454.00 <br /> ALUMINUM, DISS. (MC/L) 12 0.13 0.09 0.05 0.30 <br /> ARSENIC, DISS. (UG/L) 13 1.38 0.51 1.00 2.00 <br /> 6ARIUM, DISS. (UC/L) 3 2110.00 242.49 20.00 500.00 <br /> BICARBONATE, DISS. (MG/L) 9 438.33 6(1.68 365.00 525.00 <br /> BORON, DISS. (UG/L) 16 360.38 154.74 140.00 738.00 <br /> CADMIUM, DISS. (UG/L) 12 4.89 1.85 2.00 8.00 <br /> CALCIUM, DISS. (I4G/L) 16 533.63 77.65 259.00 606.00 <br /> CARBONATE, DISS. (MC/L) 9 O.UO 0.00 O.f10 0.00 <br /> CIILORIDE, DISS. (MG/L) 16 42.69 130.47 1.00 530.00 <br /> CIIROIAIUM, DISS. (UC/L) 4 42.50 29.86 10.00 80.00 <br /> CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 16 3641.06 421.78 3000.00 4360.00 <br /> COPPER, DISS. (UC/L) 14 21,00 12.47 10.00 60.00 <br /> FLUORIDE, UISS. (MG/L) 16 0.75 (1.21 0.41 1.38 <br /> IIARDNESS AS CAC03 (MG/L) 15 2802.07 231.35 2412.00 3277.00 <br /> IRON, DISS. (MG/I.) 14 2.21 1,42 0.39 5.15 <br /> LEAD, DISS. (UG/L) 14 33.57 34.55 20.00 120.00 <br /> MAGNESIUM, DISS. (MG/L) 16 338.44 61.14 200.00 424.00 <br /> MANGANESE, DISS. (1-0C/L) 16 1.93 0.46 0.92 2.64 <br /> MERCURY, DISS. (UC/L) 15 2.9G 6.92 0.02 20.00 <br /> MOLYBDENUM, DISS. (UC/L) 13 119.46 80.10 3.00 20(1.00 <br /> NICKEL, DISS. (UG/L) 5 24.00 5.48 20.011 30.00 <br /> NITROGEN, ANMONIA, DISS. (MG/L) 13 0.48 0.29 0.10 1.00 <br /> NITROGEN, NITRATE, DISS. (tAC/L) 16 0.47 0.62 0.01 1,61 <br /> NITROGEN, NITRITE, DISS. (MC/L) U <br /> PH @ 25 DEC C 1G 6.80 6.40 7.70 <br /> PHOSPHATE AS P04, DISS. (MG/L) 9 0.11 0.08 0.01 U.3U <br /> POTASSI UI4, DISS. (MC/L) 1G 9.38 4.48 4.00 20.00 <br /> SELENIUM, DISS. (UG/L) 13 1,46 0.52 1.00 2.00 <br /> SILVER, DISS. (IIC/L) 3 12.33 2.08 10.(10 14.00 <br /> SODIUM, DISS. (MC/L) 1G 59.88 39.21 19.00 120.00 <br /> SAR 9 0.48 - 0.35 0.16 1.11 <br /> SULFATE, DISS. (MC/L) 16 2446.00 258.78 1950.00 2992.00 <br /> SULFIDE, TOTAL (11G/L) 0 <br /> SUSPENDED SOLIDS (MG/L) 14 3111.93 321.32 9.00 1096.00 <br /> ZINC, DISS. (MG/L) 16 0.13 0.08 0.01 0.25 <br /> CATION/ANION BAI_ANGE 170) 9 0.40 2.21 -2.50 4.00 <br /> DISS. DISSOLVED SOLIDS ® 180 DEC (MG/L) 16 3827.75 426.27 314(1.00 4708.00 <br /> _DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 9 3500.67 344.39 3060.00 4118.00 <br />INDICATES NO f1ATA <br />~I <br />