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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2012 Annual Hydrology Report S21 <br />Terror Creek - Spring 21 <br />Elevation - 7100 <br />Initiated <br />Activated <br />Date <br />4/15/1983 <br />4/15/1983 <br />4/15/1983 <br />4/15/1983 <br />12/1/2010 <br />1 <br />12/1/2010 <br />12/1/2010 <br />12/1/2010 <br />10/10/2012 <br />8/7/2012 <br />6/14/2012 <br />4/9/2012 <br />Summary Information <br />Field <br />Parameters <br />Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow <br />GPM <br />0 <br />1.03 <br />7.5 <br />0 <br />0.14 <br />1.25 <br />0 <br />0 <br />1.25 <br />0 <br />Temperature <br />Celsius <br />2.5 <br />12.1 <br />20.2 <br />16.2 <br />Conductivity <br />umhos /cm <br />360 <br />687 <br />907 <br />1200 <br />pH <br />su <br />7.2 <br />7.9 <br />8.5 <br />8.6 <br />Field Comments <br />Damp <br />Damp <br />Lrg Seep <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg /L <br />268 <br />388.56 <br />456 <br />Carbonate <br />mg /L <br /><MDL <br />0.23 <br />3.5 <br />Chloride <br />mg /L <br />2 <br />8.78 <br />14 <br />Conductivity <br />umhos /cm <br />555 <br />679.72 <br />775 <br />Hardness <br />mg /L <br />279 <br />350.00 <br />442 <br />pH <br />su <br />7 <br />7.881 <br />8.4 <br />ResidueFilterable -TDS <br />mg /L <br />330 <br />408.44 <br />535 <br />ResidueNonFilterable -TSS <br />mg /L <br />2 <br />24.92 <br />106 <br />SAR <br />0.48 <br />0.65 <br />1 <br />Sulfate <br />mg /L <br />30 <br />50.22 <br />91 <br />Calcium (Dissolved) <br />mg /L <br />58 <br />84.47 <br />108 <br />Magnesium (Total) <br />mg /L <br />25 <br />33.81 <br />42 <br />Sodium (Dissolved) <br />mg /L <br />22 <br />27.92 <br />44 <br />Potassium <br />mg /L <br />2 <br />2.00 <br />2 <br />TDS Ratio (gray. /calc.) <br />1 <br />1.00 <br />1 <br />Baseline Information for Point S21 is derived from events beginning on 4/15/83 through 12/1/10. <br />Point influenced by mining on 12/1/10. <br />Figure No. 70 <br />