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3 <br /> NUCLA MINE GROUND WATER QUALIT` TISTICS REPORT <br /> GEOLOGIC UNIT UNDERBURDEN <br /> OBSERVATIONS MEAN ST.DEV. MIN MAX <br /> FIELD PARAMETERS <br /> CONDUCTIVITY (UMHOS/CM) 32 2222.81 885.56 650.00 4500.00 <br /> PH (UNITS) 33 6.63 6.10 9.50 <br /> ? WATER TEMPERATURE (DEG C) 30 16.29 2.35 12.20 20.00 <br /> DEPTH TO WATER ( FT) 37 45.34 18.69 17.27 80.56 <br /> LABORATORY PARAMETERS <br /> ALKALINITY, DISS. (MG/L OF CAC03) 37 327.24 137.56 21 .00 530.00 <br /> ALUMINUM, DISS. (MG/L) 22 0. 14 0.10 0.05 0.30 <br /> ARSENIC, DISS. (UG/L) 26 1 .31 0.47 1.00 2.00 <br /> BARIUM, DISS. (UG/L) 10 237.00 166.94 30.00 600.00 <br /> BICARBONATE, DISS. (MG/L) 10 442.40 72.22 299.00 534.00 <br /> BORON, DISS. (UG/L) 37 408.41 184.11 66.00 846.00 <br /> CADMIUM, DISS. (UG/L) 22 3.49 1 .82 0.20 7.00 <br /> CALCIUM, DISS. (MG/L) 37 400.08 184.84 4.00 638.00 <br /> CARBONATE, DISS. (MG/L) 10 0.00 0.00 0.00 0.00 <br /> CHLORIDE, DISS. (MG/L) 37 32.76 14.73 11.00 72.00 <br /> CHROMIUM, DISS. (UG/L) 13 32.31 22.42 0.00 80.00 <br /> CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 37 2712.35 983. 15 850.00 4070.00 <br /> COPPER, DISS. (UG/L) 29 17.59 11 .40 1 .00 70.00 <br /> FLUORIDE, DISS. (MG/L) 37 0.64 0.45 0.10 2.25 <br /> HARDNESS AS CAC03 (MG/L) 33 1815.39 785.56 277.00 3010.00 <br /> IRON, DISS. (MG/L) 30 15.26 33.43 0.02 131 .00 <br /> LEAD, DISS. (UG/L) 30 26.00 20.44 20.00 100.00 <br /> MAGNESIUM, DISS. (MG/L) 37 190. 11 105.72 31 .00 435.00 <br /> MANGANESE, DISS. (MG/L) 37 1 .65 1 .34 0.02 5.08 <br /> MERCURY, DISS. (UG/I_) 33 5.00 9.97 0.02 40.00 <br /> MOLYBDENUM, DISS. (UG/L) 25 116.80 80. 12 2.00 200.00 <br /> NICKEL, DISS. (UG/L) 17 23.53 6.06 20.00 40.00 <br /> NITROGEN, AMMONIA, DISS. (MG/L) 26 0.58 0.44 0. 15 2.08 <br /> NITROGEN, NITRATE, DISS. (MG/L) 37 0.59 0.57 0.01 2.00 <br /> NITROGEN, NITRITE, DISS. (MG/L) 0 <br /> PH @ 25 DEG C 36 6.75 6.40 9.50 <br /> PHOSPHATE AS PO4, DISS. (MG/L) 12 0. 10 0.08 0.01 0.30 <br /> POTASSIUM, DISS. (MG/L) 37 10.21 3. 15 5.60 19.00 <br /> SELENIUM, DISS. (UG/L) 26 1 .23 0.43 1 .00 2.00 <br /> SILVER, DISS. (UG/L) 9 8.00 3.43 2.00 12.00 <br /> SODIUM, DISS. (MG/L) 37 79.89 24.01 35.00 124.00 <br /> SAR 10 0.68 0.22 0.40 1 .08 <br /> SULFATE, DISS. (MG/L) 37 1556.89 681 .46 285.00 2808.00 <br /> SULFIDE, TOTAL (MG/L) 0 <br /> SUSPENDED SOLIDS (MG/L) 30 406.03 1809.73 10.00 9980.00 <br /> ZINC, DISS. (MG/L) 37 0.54 1 .93 0.01 11 .40 <br /> CATION/ANION BALANCE (%) 10 0.98 1.78 -1 .99 4.00 <br /> DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 37 2661.51 1096.31 580.00 4292.00 <br /> DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 10 2816.40 406.38 2000.00 3170.00 <br /> ----------------------------------------- <br /> INDICATES NO DATA <br />