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Bowie Resources, LLC Surface Water <br />Bowie No. 1 Mine <br />2016 Annual Hydrology Report P1002 <br />East Roatcap Creek - Pond 10-2 <br />Depth - 3' <br />Elevation -8630 <br />Initiated 10/1/1991 10/1/1991 10/1/1991 <br />Activated 10/1/1993 10/1/1993 10/1/1993 <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 />0.0 0.6 0.898 0.0 <br />7.21510 <br />0 3.75 <br />18.75 <br />Freeboard <br />Feet <br />0.0 <br />0.1 <br />0.2 0 <br />0 <br />Temperature <br />Celsius <br />0.6 <br />11.0 <br />20.9 <br />12.6 <br />Conductivity <br />umhos/cm <br />120 126 130 60 <br />256 <br />140 <br />200 <br />pH <br />su <br />5.8 <br />8.0 <br />8.3 <br />8.2 <br />Field Comments <br />No flowi I <br />Seep Only <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />48 <br />121 <br />219 <br />66.2 <br />Carbonate <br />mg/L <br /><MDL <br />1.2 <br />12 <br /><MDL <br />Chloride <br />mg/L <br /><MDL <br />32.69 210.93 <br />0.53 <br />Conductivity <br />umhos/cm <br />91 <br />225 <br />465 <br />132 <br />Hardness <br />mg/L <br />4.30 106.86 <br />199.00 <br />Acidity <br />mg/L <br />##### <br />1 -24.30 <br />22.21 <br />-62 <br />pH <br />su <br />6.8 <br />7.7 <br />8.4 <br />7.86 <br />ResidueFilterable-TDS <br />mg/L <br />50 <br />167 <br />440 <br />113 <br />ResidueNonFilterable-TSS mg/L <br />0.3 <br />48 <br />497 <br />39.6 <br />SAR <br />0.13 <br />0.26 <br />0.54 <br />0.175 <br />Sulfate <br />mg/L <br /><MDL <br />8.18 <br />20.00 <br />1.7 <br />Calcium (Dissolved) <br />mg/L <br />1 11.21 <br />24.2 <br />44.7 <br />14.6 <br />Iron (Dissolved) <br />mg/L <br />0.01 <br />0.06 <br />0.134 <br />0.134 <br />Iron (Total) <br />mg/L <br />0.03 <br />0.87 <br />2.11 <br />2.11 <br />Magnesium (Dissolved) <br />mg/L <br />3.5 <br />12.7 <br />29.4 <br />5.08 <br />Manganese (Total) <br />mg/L <br /><MDL <br />0.046 <br />0.087 <br />0.0807 <br />Sodium (Dissolved) <br />mg/L <br />2.1 <br />6.8 <br />15.4 <br />2.63 <br />Negative value of acidity indicates equivalent value of alkalinity <br />Pond 10-2 is a man made pond (approximately 30'x 20) with an earthen berm on the south side. The pond is located in the NW114SE <br />of Section 10, T13S, R92W. The source of the water for this point is from both runoff and the Overland Ditch via natural drainage. <br />(Simon Hydro Search, 92) <br />Baseline Information for Point P1002 is derived from events beginning on 10/1/91 through 10/1/93. <br />Point influenced by mining on 10/1/93. <br />