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Bowie Resources, LLC Surface Water <br />Bowie No. 1 Mine <br />2016 Annual Hydrology Report P1004 <br />East Roatcap Creek - Pond 10-4 <br />Depth - 3' <br />Elevation -8780 <br />Initiated 10/1/1991 10/1/1991 10/1/1991 <br />Activated 11/1/1993 11/1/1993 11/1/1993 <br />Date 1 9/28/2016 6/20/2016 5/12/2016 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline Operation <br />Min Ave Max Min Ave <br />Max <br />Flow <br />GPM <br />0.4 1.3 10.13 0.0 <br />10.6 <br />65.6 <br />2.69 <br />13.125 <br />52 <br />Freeboard <br />Feet <br />0.0 <br />0.1 <br />1.5 <br />0 <br />0 <br />0 <br />Temperature <br />Celsius <br />0.4 <br />10.9 <br />23.9 <br />12.2 <br />19.5 <br />10.3 <br />Conductivity <br />umhos/cm <br />110.0 182.8 225 40 <br />114 <br />490 <br />132.4 <br />100 <br />160 <br />pH <br />su <br />6.8 <br />8.0 <br />8.9 <br />7.93 <br />8.2 <br />8.2 <br />Field Comments <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />31 <br />55 <br />90 <br />46.5 <br />Carbonate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />Chloride <br />mg/L <br /><MDL <br />39.62 <br />260.1 <br /><MDL <br />Conductivity <br />umhos/cm <br />68 <br />141 <br />546 <br />83.5 <br />Hardness <br />mg/L <br />28.75 <br />55.30 137.89 <br />Acidity <br />mg/L <br />-81.30 -10.46 <br />29.09 <br />-40 <br />pH <br />su <br />6.6 <br />7.4 <br />8.1 <br />7.72 <br />ResidueFilterable-TDS <br />mg/L <br />6 <br />117 <br />382 <br />85 <br />ResidueNonFilterable-TSS mg/L <br />2 <br />41 <br />104 <br />104 <br />SAR <br />0.097 <br />0.204 <br />0.522 <br />0.142 <br />Sulfate <br />mg/L <br /><MDL <br />21.7 <br />135 <br />1 <br />1.8 <br />Calcium (Dissolved) <br />mg/L <br />5.11 <br />13.0 <br />22.0 <br />11.5 <br />Iron (Dissolved) <br />mg/L <br />0.07 <br />0.25 <br />0.74 <br />0.0676 <br />Iron (Total) <br />mg/L <br />0.43 <br />2.08 <br />5.89 <br />2.96 <br />Magnesium (Dissolved) <br />mg/L <br />2.7 <br />5.4 <br />21.6 <br />3.38 <br />Manganese (Total) <br />mg/L <br /><MDL <br />0.608 <br />2.69 <br />0.1381 <br />1 <br />Sodium (Dissolved) <br />mg/L <br />1.39 <br />3.591 <br />12.401 <br />1 <br />2.01 <br />Negative value of alkalinity indicates equivalent value of alkalinity <br />Pond 10-4 is a man made pond (approximately 50'x 50) with an earthen dam located on the south side. The pond is located in the <br />SE114NW114 of Section 10, T13S, R92W. Source of the surface water is from the Overland Ditch. (Simon Hydro Search, 92) <br />Baseline Information for Point P1004 is derived from events beginning on 10/1/91 through 11/1/93. <br />Point influenced by mining on 11/1/93. <br />