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

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NUCLA EAST MINE GROUND WATER QUALITY STATISTICS REPORT SAMPLE POINT GW-N17P1(WBO117) LOCATION 46N15W6BCC GEOLOGIC UNIT DAKOTA COAL OBSERVATIONS MEAN ST.DEV. MIN MAX FIELD PARAMETERS CONDUCTIVITY (UMHOS/CM) 5 2344.00 239.65 2080.00 2610.00 PIT (UNITS) 5 8.83 8.29 10.28 WATER TLMPERAJURE (DEG C) 5 13.32 2.63 11.00 17.80 DEPTH TO WATER (FT) 5 43.02 1.02 42.01 44.26 LABORATORY PARAMETERS ALKAIINITY, DISS. (MG/L OF CAC03) 5 237.80 295.77 46.00 750.00 ALUMINUM, DISS. (MG/L) 5 0.05 0.00 0.05 0.05 ARSENIC, DISS. (UG/L) 5 1.00 0.00 1.00 1.00 BARIUM, DISS. (UG/L) 2 75.00 21.21 60.00 90.00 BICARBONATE, DISS. (MG/L) 5 261.00 383.61 0.00 915.00 BORON, DISS. (UG/L) 5 192.00 58.91 120.00 270.00 CADMIUM, DISS. (UG/L) 5 5.00 0.00 5.00 5.00 CALCIUM, DISS. (MG/L) 5 44.20 37.44 14.00 105.00 CARBONATE, DISS. (MG/L) 5 7.60 10.43 0.00 24.00 CHLORIDE, DISS. (I,IG/L) 5 27.00 2.24 24.00 30.00 CHROMIUM, DISS. (I)G/L) 3 10.00 0.00 10.00 10.00 CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 5 2630.00 582.37 1630.00 3050.00 COPPER, DISS. (I1G/L) 5 10.00 0.00 10.00 10.00 FLUORIDE, DISS. (MG/L) 5 0.76 0.48 0.39 1.60 HARDNESS AS CAC03 (MG/L) 5 246.60 245.85 56.00 664.00 IRON, DISS. (MG/L ) 5 0.02 0.00 0.02 0.02 LEAD, DISS. (UG/L) 5 20.00 0.00 20.00 20.00 MAGNESIUM, DISS. (MG/L) 5 33.20 37.51 5.00 98.00 rn MANGANESE, DISS. (MG/L) 5 0.01 0.00 0.01 0.01 MERCURY, DISS. ((IG/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/l_) 5 2.96 1 .90 0.64 5. 16 NITROGEN, NITRATE, DISS. (MG/1-) 5 0.03 0.02 0.02 0.05 NITROGEN, NITRITE, DISS. (MG/L) 1 0.01 0.01 0.01 PH @ 25 DEG C 5 8.45 8.10 9.80 PHOSPHATE AS PO4, DISS. (MG/L.) 3 0.13 0.06 0. 10 0.20 POTASSIUM, DISS. (MG/L) 5 14.40 3.65 11.00 20.00 SELENIUM, DISS. (UG/L) 5 1.00 0.00 1.00 1.00 SILVER, DISS. (UG/L) 3 10.00 0.00 10.00 10.00 SODIUM, DISS. (MG/L) 5 564.80 122.48 417.00 616.00 SAR 4 19.85 10.46 7.63 33.05 SULFATE, DISS. (MG/L) 5 1207.40 597.07 146.00 1550.00 SULFIDE, TOTAL (MG/L) 1 0.20 0.20 0.20 SUSPENDED SOLIDS (MG/L) 5 558.80 461 .76 156.00 1332.00 ZINC, DISS. (MG/L) 5 0.02 0.01 0.01 0.04 CATION/ANION BALANCE (q) 5 -0.79 3.91 -5.40 3.46 DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 5 1932.80 515.30 1050.00 2306.00 DISS. DISSOLVED SOLIDS, CALCULATED (MG/L 5 2029.40 547.86 1058.00 2355.00 CD ----------------------------------------- INDICATES NO DAIA rn Q- Table 7-22. Ground Water Quality Statistics Report for GW-N17P1 Go