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• <br />TABLE b <br />Percentage of Milliequivalents per Liter for Hajor Ions, <br />Yedge Overburden Average for Each Water Year <br />~ Seneca II-W Mine <br /> CA MG NA+K S04 LL HL03+C03 TDS <br /> <br />GN-52N-140Y <br />1992 41.49 49.14 9.38 90.42 0.93 8.66 3261.00 <br />1991 44.85 46.50 8.66 90.08 0.69 9.23 3414.00 <br />1990 41.82 49.97 8.22 89.96 0.65 9.39 3685.33 <br />1988-89 40.67 51.82 7.51 89.31 0.64 10.05 3513.00 <br />TDS range 1988-89: 3464 to 3562 mg/l <br />GN-S2N-150V <br />1992 7.59 6.87 85.54 86.38 1.16 12.45 4733.00 <br />1991 9.09 6.96 83.95 87.25 1.03 11.72 6288.00 <br />1990 11.71 9.75 78.54 82.77 1.16 16.06 4607.00 <br />1988-89 10.46 8.69 80.85 80.09 1.04 18.87 3394.00 <br />TDS range 1988-89: 1810 to 4422 mg/L <br />n GN-S2N-170V <br /> <br />w <br />1992 17.27 28.87 53.86 80.60 1.35 18.05 3984.00 <br />1991 23.13 36.57 40.29 83.77 1.40 14.83 6200.00 <br />1990 20.66 38.26 41.08 83.87 1.46 14.67 7471.00 <br />1988-89 20.88 44.28 34.84 86.43 1.29 12.28 8272.40 <br />TDS range 1988-89: 7928 to 8586 mg/l <br />GN-52W-180V <br />1992 6.29 6.15 87.56 12.10 1.35 86.56 630.00 <br />1991 32.61 41.12 26.27 28.71 0.92 70.37 764.00 <br />1990 33.34 43.26 23.40 28.90 0.68 70.41 733.00 <br />1988-89 26.70 41.26 32.03 30.06 0.79 69.15 774.80 <br />TDS range 1988-89: 740 to 798 mg/l , <br />Mote: Nell GW-524-1 60V d id not have enough water to sample for entire period. <br />