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Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2016 Annual Hydrology Report <br />S2500 <br />Steven's Gulch - Spring 25 <br />Elevation - 7160 <br />Initiated <br />Activated <br />Date <br />4/14/1983 4/14/1983 4/14/1983 <br />1 <br />12/21/2016 9/26/2016 6/20/2016 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Operation <br />Max Min Ave Max <br />Flow <br />GPM <br />0 <br />0.42 <br />7.49 0 0 0 <br />Temperature <br />Celsius <br />5.0 <br />14.1 <br />27.9 <br />Conductivity <br />umhos/cm <br />1960 <br />2992 <br />4470 <br />pH <br />su <br />6.9 <br />7.9 <br />9.1 <br />Field Comments <br />DryDry Dry <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />483 <br />846 <br />1040 <br />Carbonate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />Chloride <br />mg/L <br />22 <br />43 <br />58 <br />Conductivity <br />umhos/cm <br />1650 <br />3062 <br />3780 <br />Hardness <br />mg/L <br />679 <br />1387 <br />1894 <br />pH <br />su <br />7.4 <br />8.02 <br />8.4 <br />ResidueFilterable-TDS <br />mg/L <br />1036 <br />2450 <br />3398 <br />ResidueNonFilterable-TSS mg/L <br />8 <br />92 <br />492 <br />SAR <br />0.98 <br />3.84 <br />4.76 <br />Sulfate <br />mg/L <br />811 <br />1311 <br />1827 <br />Calcium (Dissolved) <br />mg/L <br />73 <br />140 <br />208 <br />Magnesium (Dissolved) <br />mg /L <br />121 <br />252 <br />346 <br />Sodium (Dissolved) <br />mg/L <br />192 <br />339 <br />396 <br />Potassium <br />mg/L <br /><MDL <br />3.07 <br />9.2 <br />TDS Ratio (gray./calc.) <br />1.01 <br />1.01 <br />1.01 <br />The area of concern for monitoring point S2500 has not been affected by the mining operation. Therefore, all recorded <br />monitoring events are considered Baseline. <br />This spring consists of a 4'x 8' area where water comes from a coal lens or an old mine addit. (Hanna, 99) <br />Baseline Information Collection initiated on 4/14/83 and not yet considered complete. <br />Point S2500 has not been influenced by mining. <br />Surface Water <br />