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

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NUCLA EAST MINE GROUND WATER QUALITY STATISTICS REPORT SAMPLE POINT GW-N14(WB0014) LOCATION 47N16W36DAC GEOLOGIC UNIT DAKOTA COAL OBSERVATIONS MEAN ST.DEV. MIN MAX FIELD PARAMETERS CONDUCTIVITY (UMHOS/CM) 5 2996.00 164.56 2780.00 3200.00 PH (UNITS) 5 5.15 4.90 6.47 WATER TEMPERATURE (DEG C) 5 12.30 2.89 9.50 16.50 DEP11I TO WATER (FT) 5 61.77 2.62 59.31 64.96 LABORATORY PARAMETERS ALKALINITY, DISS. (MG/L OF CAC03) 5 18.80 21 .24 4.00 50.00 ALUMINUM, DISS. (MG/L) 5 5.50 5.16 0. 16 12.00 ARSENIC, DISS. (UG/L) 5 2.40 3.13 1.00 8.00 BARIUM, DISS. (UG/L) 2 15.00 7.07 10.00 20.00 BICARBONATE, DISS. (MG/L) 5 23.00 25.85 5.00 61 .00 BORON, DISS. (UG/L) 5 354.00 170.09 80.00 490.00 CADMIUM, DISS. (UG/L) 5 6.00 2.24 5.00 10.00 CALCIUM, DISS. (MG/L) 5 486.00 32.26 453.00 519.00 CARBONATE, DISS. (MG/L) 5 0.00 0.00 0.00 0.00 CHLORIDE, DISS. (MG/1_) 5 11 .00 1.87 8.00 13.00 CHROMIUM, DISS. (UG/L) 3 10.00 0.00 10.00 10.00 CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 5 3786.00 217.78 3420.00 3980.00 COPPER, DISS. (UG/L) 5 10.00 0.00 10.00 10.00 ILUORIDE, DISS. (MG/L) 5 2.16 1.26 0.48 3.60 HARDNESS AS CAC03 (MG/L) 5 2916.40 212.18 2600.00 3185.00 IRON, DISS. (MG/L ) 5 51.88 6.27 43.30 61.00 v LEAD, DISS. (UG/L) 5 30.00 22.36 20.00 70.00 N MAGNESIUM, DISS. (MG/L) 5 415.00 37.87 358.00 461.00 MANGANESE, DISS. (MG/L) 5 4.98 1.34 3.27 6.50 MERCURY, DISS. (UG/L) 5 0.20 0.00 0.20 0.20 MOLYBDENUM, DISS. (UG/L) 5 50.00 0.00 50.00 50.00 NICKEL, DISS. (UG/L) 2 150.00 42.43 120.00 180.00 NITROGEN, AMMONIA, DISS. (MG/L) 5 0.93 0.07 0.86 1 .04 NITROGEN, NITRATE, DISS. (MG/L) 5 0.32 0.64 0.02 1.47 NITROGEN, NITRITE, DISS. (MG/L) 1 0.01 0.01 0.01 I'll L 25 DEG C 5 4.95 4.70 7.60 PIIOSI'HATE AS PO4, DISS. (MG/L) 3 0.10 0.00 0.10 0. 10 POTASSIUM, DISS. (MG/L) 5 18.20 1.92 16.00 21.00 SELENIUM, DISS. (UG/L) 5 1.00 0.00 1.00 1 .00 SILVLR, DISS. (UG/L) 3 10.00 0.00 10.00 10.00 SODIUM, DISS. (MG/L) 5 89.60 22. 18 77.00 12.9.00 SAR 5 0.74 0.21 0.62 1 .11 SULFATE, DISS. (MG/T_) 5 3057.00 194.70 2718.00 3219.00 SULFIDE, TOTAL (MG/L) 1 0.20 0.20 0.20 SUSPENDED SOLIDS (MG/L) 5 1534.40 2630:39 44.00 6180.00 ZINC, DISS. (MG/L) 5 0.46 0.18 0.32 0.74 CA110N/ANION BALANCE (%) 5 -1.64 2.45 -3.77 1.39 CD DISS. DISSOLVED SOLIDS 180 DEG (MG/L) 5 11331.60 100.85 4180.00 4444.00 DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 5 4077.00 234.93 3672.00 4262.00 `° ----------------------------------------- o INDICATES NO DATA r Table 7-21_ Ground Water Quality Statistics Report for GW-N14 co co