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<br />TABLE 1 <br />Historic Summery of Water Qaulity <br />at PRS - 1, Middle Fork of the Purgatoire ~ <br />River, above New Elk Mine <br />Data Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean <br />Entry Value Value Average Value Value Average Value Value Average Value Value Averege Value Value Average <br />SAMPLING DATE 1984 1984 1984 1985 1985 1985 1986 1986 1986 1987 1987 1987 1988 1988 1988 <br />Parameter Units <br />Slaif Gauge feet <br />Flow cfs <br />pH standard <br />Conductivity umhos/cm <br />Temperature °C <br />Dissolved Oxygen ppm <br />Iron mgA <br />TSS mg/I <br />TDS mg/I <br />TCS mg/I <br />Carbonate mg/I <br />Bicarbonate mg/I <br />Manganese mg/I <br />Sodium mgll <br />Chloride mg/I <br />Sulfate mg/I <br />Calcium mg/I <br />Magnesium mgll <br />Potassium mg/I <br />Hydroxide mg/I <br />Fluoride mg/I <br />Lead mg/I <br />Selenium mg/1 <br />SAR standard <br />_ _ _ _ _ _ _ _ _ _ _ 0.2 <br />5.9 52.7 19.7 5.5 81.7 25.3 7.2 122 28 5.34 63.97 22.62 <br />7 8.1 7.6 7.2 8.3 7.4 6.3 8.2 7.4 7.3 6 7.66 <br />109 360 261 160 350 282 143 353 264 179 467 344.75 <br />0.1 17.9 8.1 0.6 17.9 7.5 1.8 15.9 7.5 0 19.3 6.9 <br /> 16.9 14.5 1.6 12.4 6.35 <br /> 0.47 0.17 0.21 0.06 <br /> 25 11 4 2 <br /> 203 207 180 226 <br /> 30 15 16 14 <br /> ci <7 <1 0.5 <br /> 169 153 159 172 <br /> 0,08 <.01 0.01 0.01 <br /> 7,9 8.3 7.1 8.7 <br /> 3.5 1.2 1.1 6 <br /> 43 48 39 44 <br /> 50 46 44 51 <br /> 9.4 9.3 7.9 10.1 <br /> 1.21 1.18 0.93 1.01 <br /> _ c,t)<j 0.25 <br /> - 0.1 0.2 <br /> c,01 - <,01 0.005 <br /> c,01 ~ - <.01 0.005 <br /> 0.27 0.29 0.26 0.29 <br />3.17 <br />6.4 <br />229 <br />0.3 <br />6.8 <br />116.2 23.31 <br />8.8 8.19 <br />411 315.45 <br />18.2 9.15 <br />13 9.21 <br />0.22 <br />4 <br />172 <br />51 <br />0.5 <br />154 <br />0.02 <br />7.5 <br />1.6 <br />34 <br />46 <br />8.9 <br />1.17 <br />0,2 <br />0.025 <br />0.05 <br />0.27 <br />