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Bowie Resources, LLC Surface Water <br />Bowie No. 1 Mine <br />2015 Annual Hydrology Report P1501 <br />East Roatcap Creek - Pond 15-1 <br />Depth - 4' <br />Elevation -8055 <br />Initiated 10/1/1991 10/1/1991 10/1/1991 10/1/1991 <br />Activated 8/1/1994 8/1/1994 8/1/1994 8/1/1994 <br />Date 1 11/10/2015 9/11/2015 6/21/2015 4/10/2015 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Max <br />Operation <br />Min Ave <br />Max <br />Flow <br />GPM <br />0.0 <br />2.5 <br />43 <br />0.0 <br />3.7 <br />101.25 <br />0 0 6 <br />0.5 <br />Freeboard <br />Feet <br />0.0 <br />0.0 <br />0 <br />0.0 <br />1.4 <br />4 <br />1.2 0.98 3.775 <br />Temperature <br />Celsius <br />7.0 <br />7.0 <br />7 <br />0.5 <br />12.9 <br />26.5 <br />21.5 <br />10.2 <br />Conductivity <br />umhos/cm <br />180 <br />236 <br />280 <br />120 <br />374 <br />840 <br />200 <br />370 <br />pH <br />su <br />8.1 <br />8.1 <br />8.1 <br />6.8 <br />8.1 <br />8.4 <br />8.2 <br />8.4 <br />Field Comments <br />I <br />I <br />I <br />I <br />No Inflow <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />102 <br />102 <br />102 <br />82 <br />158 <br />337 <br />177 <br />Carbonate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />0.9 <br />7.0 <br /><MDL <br />Chloride <br />mg/L <br />2 <br />1 <br />2 <br />2 <br /><MDL <br />18.8 <br />148.9 <br />2.1 <br />Conductivity <br />umhos/cm <br />200 <br />200 <br />200 <br />161 <br />318 <br />689 <br />352 <br />Hardness <br />mg/L <br />90 <br />90 <br />90 <br />75 <br />162 <br />442.1 <br />170 <br />Acidity <br />mg/L <br />1 <br />-184 <br />-22 <br />54.93 <br />-184 <br />pH <br />su <br />8.0 <br />8.0 <br />8 <br />7.3 <br />7.9 <br />8.5 <br />8.25 <br />ResidueFilterable-TDS <br />mg/L <br />118 <br />118 <br />118 <br />90 <br />234 <br />484 <br />231 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />35 <br />83 <br />27.3 <br />SAR <br />0.32 <br />0.32 <br />0.32 <br />0.19 <br />0.53 <br />1.055 <br />0.458 <br />Sulfate <br />mg/L <br />8 <br />8 <br />8 <br /><MDL <br />14.92 <br />35.81 <br />5.9 <br />Calcium (Dissolved) <br />mg/L <br />23.0 <br />23.01 <br />23 <br />12.21 <br />38.6 <br />116 <br />41.9 <br />Iron (Dissolved) <br />mg/L <br />0.01 <br />0.06 <br />0.11 <br />0.0222 <br />Iron (Total) <br />mg/L <br />0.12 <br />0.44 <br />0.88 <br />0.88 <br />Magnesium (Dissolved) <br />mg/L <br />8.0 <br />8.0 <br />8 <br />6.8 <br />16.4 <br />37.02 <br />15.9 <br />Manganese (Total) <br />mg/L <br /><MDL <br />0.05 <br />0.137 <br />1 1 0.137 <br />Sodium (Dissolved) <br />mg/L <br />7.0 <br />7.0 <br />7 <br />4.4 <br />15.7 <br />51 <br />1 1 13.9 <br />TDS Ratio (gray./calc.) <br />% <br />1.081 <br />1.081 <br />1.081 <br />0.931 <br />1.011 <br />1.13 <br />Pond 15-1 is a man made pond (approximately 20'x 25) with an earthen dam on its south side. The pond is located in the NE1/4 of <br />Section 15, T13S, R92W Origin of surface water was observed to be from the Overland Ditch. (Simon Hydro Search, 92) <br />Baseline Information for Point P1501 is derived from events beginning on 10/1/91 through 8/1/94. <br />Point influenced by mining on 8/1/94. <br />Figure No. 54 <br />