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Bowie Resources, LLC Surface Water <br />Bowie No. 1 Mine <br />2016 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 <br />Activated 8/1/1994 8/1/1994 8/1/1994 <br />Date 1 9/28/2016 6/20/2016 5/12/2016 <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 />3.9 <br />101.3 <br />5.62 <br />18.75 <br />Freeboard <br />Feet <br />0.0 <br />0.0 <br />0 <br />0.0 <br />1.3 <br />4 <br />0.2 <br />Temperature <br />Celsius <br />7.0 <br />7.0 <br />7 <br />0.5 <br />13.0 <br />26.5 <br />19.6 <br />15.4 <br />Conductivity <br />umhos/cm <br />180 <br />236 <br />280 <br />120 <br />370 <br />840 <br />270 <br />230 <br />pH <br />su <br />8.1 <br />8.1 <br />8.1 <br />6.8 <br />8.1 <br />8.6 <br />8.4 <br />8.6 <br />Field Comments <br />No flow <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />102 <br />102 <br />102 <br />82 <br />156 <br />337 <br />133 <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 />17.8 <br />148.9 <br />2.8 <br />Conductivity <br />umhos/cm <br />200 <br />200 <br />200 <br />161 <br />314 <br />689 <br />250 <br />Hardness <br />mg/L <br />90 <br />90 <br />90 <br />75 <br />160 <br />442.1 <br />128 <br />Acidity <br />mg/L <br />1 <br />-184 <br />-42 <br />54.93 <br />-140 <br />pH <br />su <br />8.0 <br />8.0 <br />8 <br />7.3 <br />7.9 <br />8.5 <br />8.06 <br />ResidueFilterable-TDS <br />mg/L <br />118 <br />118 <br />118 <br />90 <br />230 <br />484 <br />173 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />45 <br />184 <br />184 <br />SAR <br />0.32 <br />0.32 <br />0.32 <br />0.19 <br />0.52 <br />1.055 <br />0.323 <br />Sulfate <br />mg/L <br />8 <br />8 <br />8 <br /><MDL <br />14.07 <br />35.81 <br />3 <br />Calcium (Dissolved) <br />mg/L <br />23.0 <br />23.01 <br />23 <br />12.21 <br />38.1 <br />116 <br />31.1 <br />Iron (Dissolved) <br />mg/L <br />0.01 <br />0.06 <br />0.11 <br /><MDL <br />Iron (Total) <br />mg/L <br />0.12 <br />1.28 <br />5.5 <br />5.5 <br />Magnesium (Dissolved) <br />mg/L <br />8.0 <br />8.0 <br />8 <br />6.8 <br />16.2 <br />37.02 <br />12.3 <br />Manganese (Total) <br />mg/L <br /><MDL <br />0.09 <br />0.263 <br />1 0.263 <br />Sodium (Dissolved) <br />mg/L <br />7.0 <br />7.0 <br />7 <br />4.4 <br />15.21 <br />51 <br />1 7.86 <br />Negative value indicates equivalent value of alkalinity <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 />