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! • <br />TABLE 12 <br />Percentage of Milliequivalents per Li[er for Major Ions, <br />Surface Water Average for Each Water Year <br />Seneca 11-W Mine <br />CA MG ,NA+K S04 CL HC03+C03 TDS <br />SW-52W-FG2 <br />1993 44.34 40.67 14.99 58.71 2.91 38.38 944.67 <br />1992 ~ 44.73 40.77 14.50 62.59 2.83 34.58 1111.33 <br />1991 44.83 40.11 15.06 58.94 3.04 38.02 1068.00 <br />1990 47.04 40.33 12.63 61.86 3.01 35.13 1061.33 <br />1980-89 45.48 40.67 13.84 48.21 2.92 48.87 750.39 <br />TDS range 1980-89: 375 to 1180 mg/t <br />SW-S2W-SG7 <br />1993 42.93 44.06 13.01 41.11 2.19 56.69 569.33 <br />1992 42.95 39.00 18.05 41.42 2.60 55.98 676.00 <br />1991 44.55 39.55 15.90 35.96 5.33 58.77 642.00 <br />1990 28.90 25.43 45.57 40.50 1.37 58.13 791.50 <br />1987-89 44.96 42.34 12.69 52.93 2.01 45.06 697.00 <br />y TDS range 1987-89: 620 to 768 mg/l <br /> <br />N <br />~''~ NGDES 006 <br />1993 37.23 51.64 11.12 72.49 3.82 23.68 830.67 <br />1992 38.36 49.64 11.99 69.76 8.06 22.18 891.33 <br />1991 37.98 48.32 73.70 70.90 4.47 24.63 728.00 <br />1990 40.50 47.56 11.94 75.93 1.14 22.93 595.00 <br />1986.89 25.52 62.67 11.82 78.32 2.02 19.66 1969.00 <br />TDS range 1986-89: 696 to 4426 mg/! <br />Note: Values for 1986-89 ere from baseline Site SW-S2W-SG6 <br />SW-S2W-FG1 <br />1993 38.89 43.92 17.19 53.42 3.44 43.14 765.33 <br />1992 34.09 39.12 26.79 60.33 2.95 36.73 974.00 <br />1991 37.38 38.79 23.83 54.85 4.50 40.65 936.67 <br />1990 35.67 37.03 27.30 63.77 1.89 34.34 1049.33 <br />1979-89 38.21 44.38 17.41 59.90 2.33 37.86 942.18 <br />TDS range 1979-89: 290 to 1632 mg/l <br />