1988-04-11_PERMIT FILE - C1981008A (9)

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NUCLA MINE GROUND WATER QUALITY STATISTICS REPORT SAMPI E PO1NT GW-N9(WA0009) LOCAFION 47N16W25CAD GEOLOGIC UNIT OVERBURDEN AND DAKOTA COAL OBSERVATIONS MEAN ST.DEV. MIN MAX FIELD PARAMETERS CONDUCTIVITY (UMHOS/CM) 15 2559.07 782.91 16.00 3250.00 PH (UNITS) 16 6.66 6.40 7.20 WAFER TEMPERATURE (DEG C) 15 14.39 2.04 12.00 20.00 DEPTH TO WATER ( FT) 16 38.09 4.33 31.11 46.31 LABORATORY PARAMETERS ALKALINITY, DISS. (MG/L OF CAC03) 17 368.59 53.22 288.00 454.00 ALUMINUM, DISS. (MG/L) 13 0. 12 0.08 0.05 0.30 ARSENIC, DISS. (UG/L) 14 1 .36 0.50 1.00 2.00 BARIUM, DISS. (UG/L) 4 185.00 226.50 20.00 500.00 BICARBONATE, DISS. (MG/L) 10 429.60 63.52 351.00 525.00 BORON, DISS. (UG/L) 17 349. 18 156.78 140.00 738.00 CADMIUM, DISS. (UG/L) 13 4.90 1.77 2.00 8.00 CALCIUM, DISS. (MG/L) 17 535.76 75.70 259.00 606.00 CARBONATE, DISS. (MG/L) 10 0.00 0.00 0.00 0.00 CHLORIDE, DISS. (MG/L) 17 40.29 126.71 1 .00 530.00 CHROMIUM, DISS. (UG/L) 5 36.00 29.66 10.00 80.00 CONDUCTIVITY C 25 DEG C (UMHOS/CM) 17 3593.94 452.25 2840.00 4360.00 COPPER, DISS. (UG/L) 15 20.27 12.35 10.00 60.00 FLUORIDE, DISS. (MG/L) 17 0.78 0.26 0.41 1 .40 HARDNESS AS CAC03 (MG/L) 16 2777.00 244.96 2401.00 3277.00 IRON, DISS. (MG/L) 15 2.13 1.40 0.39 5. 15 � LEAD, DISS. (UG/L) 15 32.67 33.48 20.00 120.00 �;, MAGNESIUM, DISS. (MG/L) 17 332.53 64.02 200.00 424.00 MANGANESE, DISS. (MG/L) 17 1 .92 0.45 0.92 2.64 MERCURY, DISS. (UG/L) 16 2.79 6.73 0.02 20.00 MOLYBDENUM, DISS. (UG/L) 14 114.50 79.16 3.00 200.00 NICKEL, DISS. (UG/L) 6 23.33 5.16 20.00 30.00 NITROGEN, AMMONIA, DISS. (MG/L) 14 0.47 0.28 0. 10 1.00 NITROGEN, NITRATE, DISS. (MG/L) 17 0.44 0.61 0.01 1.61 NITROGEN, NITRITE, DISS. (MG/L) 1 0.01 0.01 0.01 PH @ 25 DEG C 17 6.81 6.40 7.70 PHOSPHATE AS PO4, DISS. (MG/L) 9 0. 11 0.08 0.01 0.30 POTASSIUM, DISS. (MG/L) 17 9.06 4.53 4.00 20.00 SELENIUM, DISS. (UG/L) 14 1 .43 0.51 1 .00 2.00 SILVER, DISS. (UG/L) 4 11.75 2.06 10.00 14.00 SODIUM, DISS. (MG/L) 17 57.29 39.43 16.00 120.00 SAR 10 0.45 0.35 0.14 1. 11 SULFATE, DISS. (MG/L) 17 2423. 18 267.65 1950.00 2992.00 SULFIDE, TOTAL (M(;/L) 1 0.20 0.20 0.20 SUSPENDED SOLIDS (MG/L) 15 379.00 396.80 9.00 1276.00 ZINC, DISS. (MG/L) 17 0.13 0.08 0.01 0.25 CD CATION/ANION BALANCE 10 0.34 2.10 -2.50 4.00 DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 17 3784.59 449.47 3094.00 4708.00 cn DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 10 3456.30 353.71 3057.00 4118.00 a ----------------------------------------- o INDICATES NO DAIA r 0- Table 7-7. Ground Water Quality Statistics Report for GW-N9 co