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

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NUCLA EAST MINE GROUND WATER QUALITY STATISTICS REPORT SAMPLE POINT GW-N18(WB0018) LOCATION 46N15W6BCC GEOLOGIC UNIT OVERBURDEN OBSERVATIONS MEAN ST.DEV. MIN MAX FIELD PARAMETERS CONDUCTIVITY (UMIIOS/CM) 4 2035.00 444.26 1410.00 2450.00 PH (UNITS) 4 7.02 6.74 7.45 WATER TEMPERATURE (DEG C) 1t 13.85 1.91 11.00 15.00 DEPTH TO WATER (FT) 4 26.89 1 .98 24.47 28.65 LABORATORY PARAMETERS ALVALINITY, DISS. (MG/L OF CAC03) 4 282.75 13.60 270.00 295.00 ALUMINUM, DISS. (MG/L) 4 0.05 0.00 0.05 0.05 ARSENIC, DISS. (UG/L) 4 2.00 1 .15 1.00 3.00 BARIUM, .DISS. (UG/L) 1 70.00 70.00 70.00 BICARBONATE, DISS. (MG/L) 4 345.00 16.79 329.00 360.00 BORON, DISS. (UG/L) 4 147.50 38.62 110.00 190.00 CADMIUM, DISS. (UG/L) 4 5.00 0.00 5.00 5.00 CALCIUM, DISS. (MG/L) 4 488.75 112.78 323.00 570.00 CARBONATE, DISS. (MG/L) 4 0.00 0.00 0.00 0.00 CHLORIDE, DISS. (MG/L) 4 2.25 1 .50 1.00 4.00 CHROMIUM, DISS. (UG/L) 2 10.00 0.00 10.00 10.00 CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 1t 2557.50 607.97 1660.00 3000.00 COPPER, DISS. (UG/L) 4 10.00 0.00 10.00 10.00 FLUORIDE, DISS. (MG/L) 4 1.36 0.50 1.00 2. 10 HARDNESS AS CAC03 (MG/L) 4 1824.75 460.57 1144.00 2134.00 IRON, DISS. (MG/L) 4 0.02 0.00 0.02 0.02 LEAD, DISS. (UG/L) 4 35.00 30.00 20.00 80.00 MAGNESIUM, DISS. (MG/L) 4 147.00 48. 17 82.00 192.00 MANGANESE, DISS. (MG/L) It 0.11 0.12 0.02 0.29 MERCURY, DISS. (UG/L) 4 0.20 0.00 0.20 0.20 MOLYBDENUM, DISS. (UG/L) 4 50.00 0.00 50.00 50.00 NICKEL, DISS. (UG/L) 1 20.00 20.00 20.00 NITROGEN, AMMONIA, DISS. (MG/L) 4 0.13 0.12 0.02 0.28 NITROGEN, NITRATE, DISS. (MG/L) 4 0.27 0.18 0.08 0.52 NITROGEN, NITRITE, DISS. (MG/L) 0 PH C 25 DEG C 4 7.61 7.50 7.80 PHOSPHATE AS PO4, DISS. (MG/L) 3 0.13 0.06 0. 10 0.20 POIASSIUM, DISS. (MG/L) 4 3.00 0.82 2.00 4.00 SELENIUM, DISS. (UG/L) 4 1.25 0.50 1 .00 2.00 SILVER, DISS. (UG/L) 2 10.00 0.00 10.00 10.00 SODIUM, DISS. (MG/L) 1t 611.00 31 .99 35.00 108.00 SAR 4 0.65 0.28 0.45 1 .011 SULFATE, DISS. (MG/I_) 1t 1664.00 535.30 875.00 2052.00 SULFIDE, TOTAL (MG/L) 0 SUSPENDED SOLIDS (MG/L) 4 709.00 587.06 236.00 1496.00 ZINC, DISS. (MG/1 ) 4 0.03 0.03 0.01 0.07 CATION/ANION BALANCE 4 -1.22 1.92 -2.88 1.41 DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 4 2603.50 759.79 1494.00 3218.00 DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 4 2536.25 715.87 1479.00 30118.00 `D ----------------------------------------- �' INDICATES NO DALA co a o Table 7-18. Ground Water Ouality Statistics Report for GW-N18 00