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Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2015 Annual Hydrology Report <br />Surface Water <br />SP19 <br />Steven's Gulch - Pond Spring 19 <br />Elevation - 8240 <br />Initiated <br />Activated <br />Date <br />8/22/1983 8/22/1983 8/22/1983 8/22/1983 <br />1 <br />10/7/2015 8/21/2015 6/18/2015 4/4/2015 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Min <br />Baseline <br />Ave <br />Operation <br />Max Min Ave Max <br />Outflow <br />GPM <br />0 <br />0.36 <br />8.62 0 0 0 0 <br />Inflow <br />GPM <br />0 <br />0.02 <br />0.49 0 0 0 0 <br />Freeboard <br />Feet <br />0 <br />1.42 <br />2.70 1.48 1.71 1.52 0.31 <br />Temperature <br />Celsius <br />-1.4 <br />17.7 <br />27.5 <br />Conductivity <br />umhos/cm <br />110 <br />287 <br />545 <br />pH <br />su <br />7.71 <br />8.41 <br />10.0 <br />Field Comments <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />84.2 <br />166.2 <br />256.2 <br />Carbonate <br />mg/L <br />Chloride <br />mg/L <br /><MDL <br />3 <br />7 <br />Conductivity <br />umhos/cm <br />150 <br />272 <br />410 <br />Hardness <br />mg/L <br />61 <br />120 <br />185 <br />pH <br />su <br />6.9 <br />7.5 <br />8.4 <br />ResidueFilterable-TDS <br />mg/L <br />100 <br />174 <br />256 <br />ResidueNonFilterable-TSS mg/L <br />6 <br />64 <br />396 <br />SAR <br />0.15 <br />0.37 <br />1.00 <br />Sulfate <br />mg/L <br /><MDL <br />24 <br />101 <br />Calcium (Dissolved) <br />mg/L <br />16 <br />28 <br />41 <br />Magnesium (Total) <br />mg/L <br />5 <br />12 <br />20 <br />Sodium (Dissolved) <br />mg/L <br />3 <br />9 <br />23 <br />TDS Ratio (gray./calc.) <br />The area of concern for monitoring point SP -19 was affected by the mining on or about February 28, 2015 <br />Baseline Information Collection initiated on 8/22/83 and complete February 28, 2015. <br />Point SP19 has been influenced by mining. <br />Figure 7 <br />