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NUCLA EAST MINE GROUND WATER QUALITY STATISTICS REPORT <br /> GEOLOGIC UNIT DAKOTA COAL <br /> OBSERVATIONS MEAN ST.DEV. MIN MAX <br /> FIELD PARAMETERS <br /> CONDUCTIVITY (UMHOS/CM) 15 2356.67 603.26 1300.00 3200.00 <br /> PH (UNITS) 15 5.30 4.68 10.28 <br /> WATER TEMPERATURE (DEG C) 15 12.85 2.31 9.50 17.80 <br /> DEPTH TO WATER ( FT) 15 41.64 17.76 15.69 64.96 <br /> LABORATORY PARAMETERS <br /> ALKALINITY, DISS. (MG/L OF CAC03) 15 95.40 190.25 0.00 750.00 <br /> ALUMINUM, DISS. (MG/L) 15 3.50 5.10 0.05 15. 10 <br /> ARSENIC, DISS. (UG/L) 15 1 .67 1.91 1 .00 8.00 <br /> BARIUM, DISS. (UG/L) 6 35.00 32.71 10.00 90.00 <br /> BICARBONATE, DISS. (MG/L) 15 106.73 235.15 0.00 915.00 <br /> BORON, DISS. (UG/L) 15 299.33 149.35 80.00 500.00 <br /> CADMIUM, DISS. (UG/L) 15 5.33 1.29 5.00 10.00 <br /> CALCIUM, DISS. (MG/L) 15 289.67 196.17 14.00 519.00 <br /> CARBONATE, DISS. (MG/L) 15 2.53 6.70 0.00 24.00 <br /> CHLORIDE, DISS. (MG/L) 15 14.93 9.15 6.00 30.00 <br /> CHROMIUM, DISS. (UG/L) 9 10.00 0.00 10.00 10.00 <br /> CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 15 2890.00 792.46 1630.00 3980.00 <br /> COPPER, DISS. (UG/L) 15 10.00 0.00 10.00 10.00 <br /> FLUORIDE, DISS. (MG/L) 15 1 .34 1.01 0.17 3.60 <br /> v HARDNESS AS CAC03 (MG/L) 15 1529.33 1162.13 56.00 3185.00 <br /> IRON, DISS. (MG/L) 15 30.83 23.66 0.02 61 .00 <br /> LEAD, DISS. (UG/L) 15 26.67 17.59 20.00 70.00 <br /> iv MAGNESIUM, DISS. (MG/L) 15 196.40 170.66 5.00 461.00 <br /> MANGANESE, DISS. (MG/L) 15 2.21 2.27 0.01 6.50 <br /> MERCURY, DISS. (UG/L) 15 0.20 0.00 0.20 0.20 <br /> MOLYBDENUM, DISS. (UG/L) 15 50.00 0.00 50.00 50.00 <br /> NICKEL, DISS. (UG/L) 6 66.67 67.72 20.00 180.00 <br /> NITROGEN, AMMONIA, DISS. (MG/L) 15 1.83 1.34 0.64 5.76 <br /> NITROGEN, NITRATE, DISS. (MG/L) 15 0.13 0.37 0.01 1 .47 <br /> NITROGEN, NITRITE, DISS. (MG/L) 3 0.01 0.00 0.01 0.01 <br /> PH @ 25 DEG C 15 5.16 4.50 9.80 <br /> PHOSPHATE AS PO4, DISS. (MG/L) 9 0.12 0.04 0.10 0.20 <br /> POTASSIUM, DISS. (MG/L) 15 14.73 3.75 9.00 21.00 <br /> SELENIUM, DISS. (UG/L) 15 1.00 0.00 1.00 1.00 <br /> SILVER, DISS. (UG/L) 9 10.00 0.00 10.00 10.00 <br /> SODIUM, DISS. (MG/L) 15 233.07 252.52 37.00 676.00 <br /> SAR 13 6.55 10.61 0.47 33.05 <br /> SULFATE, DISS. (MG/L) 15 1947.20 925.07 146.00 3219.00 <br /> SULFIDE, TOTAL (MG/L) 3 0.20 0.00 0.20 0.20 <br /> SUSPENDED SOLIDS (MG/L) 15 776.13 1540.26 22.00 6180.00 <br /> fD ZINC, DISS. (MG/L) 15 0.30 0.26 0.01 0.80 <br /> < CATION/ANION BALANCE (q) 15 -1 .83 2.80 -5.86 3.46 <br /> y DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 15 2821 .87 1189.28 1050.00 4444.00 <br /> cD DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 15 2746.07 1071 .18 1058.00 4262.00 <br /> A- ----------------------------------------- <br /> CD INDICATES NO DATA <br /> -P <br /> 00 <br /> 00 <br />