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• <br />Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2009 Annual Hydrology Report <br />1 <br />Field <br />Parameters UNITS <br />P1O07 <br />East Roatcap Creek - Pond 10-7 <br />Depth - 4' <br />Elevation -8350 <br />Surface Water <br />Initiated 10/1/1991 10/1/1991 10/1/1991 10/1/1991 <br />Activated 2/1/1996 2/1/1996 2/1/1996 2/1/1996 <br />Date 11/12/2009 8/22/2009 6/18/2009 5/13/2009 <br />Summary Information <br />Baseline Operation <br />Min Ave Max Min Ave Max <br />Flow GPM 0.0 12.8 200 0.0 0 52.2 0 7.5 5.63 2.14 <br />Freeboard Feet 0.0 0.0 0 0.0 7 4 0.62 0 0 0 <br />Temperature Celsius 0.6 8.6 20.5 0.5 8 17.5 7.9 12.7 10.7 <br />Conductivity umhos/cm 130 375 540 160 :370 570 350 360 300 <br />pH su 6.4 7.6 8.4 6.9 9 8.4 8.1 7.7 8.1 <br />Field Comments No Inflow <br />• <br />Bicarbonate 66.0 74.0 82 104.0 219.0 288 241.1 <br />Carbonate <MDL <MDL <MDL <MDL 3.7 20 <MDL <br />Chloride 1.0 1.0 1 <MDL 2.5 4.53 2.44 <br />Conductivity 128.0 141.0 154 198 400 508 411.87 <br />Hardness 63.0 67.5 72 96 197 260 202.78 <br />H HSU 7.6 7.8 7.9 7.4 7.9 8.5 7.73 <br />ResidueFilterable-TDS 88.0 89.0 90 110 257 356 356 <br />ResidueNonFilterable-TSS 6.0 6.0 6 <MDL 12.2 28 0.5 <br />SAR 0.2 0.2 0.26 0.30 0.46 0.587 0.41 <br />Sulfate 12.0 12.0 12 <MDL 7.8 20 2.1 <br />Calcium Dissolved) 15.8 17.4 19 22.8 45.9 65.2 47.4 <br />Magnesium (Dissolved) mg/L 5.7 5.8 6 8.6 19.9 33.16 20.5 <br />Sodium (Dissolved) mg/L 4.0 4.4 4.8 6.7 15.1 21 13.8 <br />TDS Ratio (qrav./talc.) <MDL <MDL <MDL <MDL 0.93 1.150 1 1.09 <br />Pond 10-7 is a man made pond (approximately 25'x 25) with an earthen dam on the south side. The pond is located in the NE114SE114 of <br />Section 10, T1 3S, R92W. Source of surface water is from natural runoff and the Overland Ditch. (Simon Hydro Search, 92) <br />• <br />Baseline Information for Point P1007 is derived from events beginning on 10/1/91 through 2/1196. <br />Point influenced by mining on 211/96. <br />Figure No. 28