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TABLE 5 Comparison of Quality of Mine Discharge With Upstream Waters <br /> STONEWALL MAXWELL DISC.** ALLEN DISC. <br /> PARAMETER* Min Max Mean Min Max Mean Min Max Mean <br /> Alkalinity (CACO3) , mg/l 46 170 105 395 750 609 434 569 506 <br /> Bicarbonate, mg/l 56 150 119 463 913 738 528 694 610 <br /> Boron, mg/l 0 0.040 0.019 0.001 0.174 0.069 0.002 0.091 <0.09 <br /> Calcium, mg/l 23 51 38 2.9 81 31 .6 8.1 15 11 .1 <br /> Chloride, mg/l 0.6 2.4 1 .4 30.2 120 73.3 4.0 9.1 6.3 <br /> Fluoride, mg/1 0.2 0.5 0.3 0.5 3.8 2.7 0.20 3.5 1 .4 <br /> Iron (total ) , mg/l 0.02 1 .40 0.44 1 .08 16.3 6.1 0.03 0.18 0.10 <br /> Magnesium, mg/1 2.3 12 7.4 1 .2 11 .0 4.4 2.4 5.4 3.9 <br /> Manganese, mg/l 0 0.04 0.012 0.02 0.146 0.064 <0.003 <0.01 <0.01 <br /> P11 7.4 8.4 8.0 7.2 8.5 7.9 8.0 8.5 8.3 <br /> Potassium, mg/l 0.9 2.7 1 .4 3.4 70 23.0 4.4 5.2 4.8 <br /> Selenium, mg/l - - - <0.001 0.011 <0.01 <0.001 0.011 <0.01 <br /> Sodium, mg/l 2. 1 20 9.0 183 340 291 234 320 280 <br /> Spec. Cond. (umhos/cm) 125 415 289 900 1850 1405 1000 1400 1220 <br /> Sulfate, mg/l 11 61 36 11 143 52 100 190 152 <br /> Total Diss. Solids, mg/l 71 253 166 774 1740 1112 720 870 806 <br /> Zinc (total ), mg/l 0 0.02 0.016 . 0.03 0.10 0.065 <0.002 0.05 <0.05 <br /> *Concentrations are of dissolved species unless otherwise noted <br /> **Apparently spurious data from sample on 2/21/80 not included <br />