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Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2015 Annual Hydrology Report <br />Surface Water <br />SP22 <br />Terror Creek - Pond Spring 22 <br />Depth 4' <br />Elevation - 7480 <br />Initiated <br />Activated <br />Date <br />7/18/1983 <br />7/18/1983 <br />7/18/1983 <br />7/18/1983 <br />8/5/2012 8/5/2012 8/5/2012 <br />1 <br />8/5/2012 <br />10/8/2015 8/7/2015 6/16/2015 <br />4/16/2015 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Max <br />Operation <br />Min Ave <br />Max <br />Inflow <br />GPM <br />0.00 0.33 <br />5.63 <br />0.00 0.00 <br />0.00 <br />0.00 0.00 0.00 0.00 <br />Outflow <br />GPM <br />0.00 0.00 <br />0.00 <br />0.00 0.00 <br />0.00 <br />0.00 0.00 0.00 0.00 <br />Freeboard <br />Feet <br />0.0 1.1 <br />4.0 <br />0.08 0.33 <br />0.43 <br />0.37 0.38 0.32 0.11 <br />Temperature <br />Celsius <br />6.9 16.9 <br />28.6 <br />Conductivity <br />umhos/cm <br />343 661 <br />915 <br />pH <br />su <br />7.31 8.31 <br />9.7 <br />Field Comments <br />Dry <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />165.9 343.38 <br />584 <br />Carbonate <br />mg/L <br /><MDL 1.9282 <br />11.71 <br />Chloride <br />mg/L <br />1 7.6205 <br />13 <br />Conductivity <br />umhos/cm <br />390 629.15 <br />878 <br />Hardness <br />mg/L <br />132 277.64 <br />377 <br />pH <br />su <br />7.3 8.013 <br />8.56 <br />ResidueFilterable-TDS <br />mg/L <br />145 377.3 <br />564 <br />ResidueNonFilterable-TSS mg/L <br />4 20.579 <br />65 <br />SAR <br />0.53 1.0868 <br />1.897 <br />Sulfate <br />mg/L <br />14 48.52 <br />230 <br />Calcium (Dissolved) <br />mg/L <br />17 57.892 <br />90 <br />Magnesium (Total) <br />mg/L <br />12 32.355 <br />51 <br />Sodium (Dissolved) <br />mg/L <br />14 40.51 <br />63 <br />TDS Ratio (gray./calc.) <br />0.99 0.99 <br />0.99 <br />The monitoring point for Spring and Pond 22 is located on an east facing slope that drains down toward Terror Creek. <br />Baseline Information is derived from monitoring events beginning on 7/18/83 through 8/5/2012, <br />Point SP22 influenced by mining on 8/5/12. <br />Figure 10 <br />