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

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NUCLA EAST MINE GROUND WATER QUALITY STATISTICS REPORT SAMPLE POINT GW-N21(WB0021 ) LOCA110N 46N15W6BAA GEOLOGIC UNIT OVERBURDEN OBSERVATIONS MEAN ST.DEV. MIN MAX FIELD PARAMETERS CONDUCTIVITY (UMHOS/CM) 5 2486.00 390.17 2000.00 2950.00 PH (UNI1S) 5 6.74 6.41 7.17 WATER TEMPERATURE (DEG C) 5 12. 16 2.00 9.50 14.50 DEPTH TO WATER (FT) 5 27.75 8.14 13.89 34.13 LABORATORY PARAMETERS ALKALINITY, DISS. (MG/L OF CAC03) 5 329.20 18.53 300.00 348.00 ALUMINUM, DISS. (MG/L) 5 0.09 0.07 0.05 0.21 ARSENIC, DISS. (UG/L) 5 1.00 0.00 1 .00 1.00 BARIUM, DISS. (UG/L) 2 25.00 7.07 20.00 30.00 BICARBONATE, DISS. (MG/L ) 5 401.60 22.73 366.00 425.00 BORON, DISS. (UG/L) 5 214.00 62.69 130.00 290.00 CADMIUM, DISS. (UG/L) 5 5.00 0.00 5.00 5.00 CALCIUM, DISS. (MG/L) 5 574.60 61.18 505.00 670.00 CARBONATE, DISS. (MG/L) 5 0.00 0.00 0.00 0.00 CHLORIDE, DISS. (14G/L) 5 10.00 5.10 1.00 13.00 CHROMIUM, DISS. (UG/L) 3 10.00 0.00 10.00 10.00 CONDUCTIVITY 0 25 DEG C (UMHOS/CM) 5 3150.00 488.11 2580.00 3750.00 COPPER, DISS. (UG/L) 5 10.00 0.00 10.00 10.00 FLUORIDE, DISS. (MG/L) 5 1.42 0.30 1 .10 1 .90 HARDNESS AS CAG03 (MG/L) 5 2406.60 360. 11 1991.00 2825.00 IRON, DISS. (MG/L) 5 0.32 0.34 0.02 0.75 LEAD, DISS. (UG/L) 5 28.00 17.89 20.00 60.00 �n MAGNESIUM, DISS. (MG/L) 5 236.60 122.23 77.00 381 .00 ,' MANGANESE, DISS. (MG/L) 5 0.32 0.20 0.03 0.54 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 20.00 0.00 20.00 20.00 NITROGEN, AMMONIA, DISS. (MG/I_) 5 0.45 0.27 0.18 0.76 NITROGEN, NITRATE, DISS. (I-IG/L) 5 0.12 0.16 0.02 0.39 NITROGEN, NITRITE, DISS. (MG/L) 1 0.01 0.01 0.01 PH @ 25 DEG C 5 7.54 7.50 7.60 PHOSPHATE AS PO4, DISS. (MG/L) 3 0.13 0.06 0.10 0.20 POTASSIUM, DISS. (MG/L) 5 6.80 2.86 3.00 10.00 SELENIUM, DISS. (UG/L) 5 1.20 0.45 1.00 2.00 SILVER, DISS. (UG/L) 3 10.00 0.00 10.00 10.00 SODIUM, DISS. (MG/L) 5 50.80 27.59 15.00 84.00 SAR 4 0.44 0.25 0.15 0.10 SULFATE, DISS. (MG/L) 5 2167.60 427.26 1616.00 2647.00 SULFIDE, TOTAL (MG/L) 1 0.20 0.20 0.20 SUSPENDED SOLIDS (MG/L) 5 323.20 307.36 114.00 848.00 ZINC, DISS. (MG/L) 5 0.03 0.00 0.03 0.04 m CATION/ANION BALANCE (%) 5 -1.69 1.52 -3.33 0.73 �. DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 5 3272.40 604.86 2552.00 3982.00 DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 5 3238.60 532.86 2562.00 3839.00 CD a ----------------------------------------- o INDICATES NO DATA r Table 7-20. Ground Water Quality Statistics Report for GW-N21 CD