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Bowie Resources, LLC Bowie No. 7 Mine 2006 Annual Hydrology Report SM07 Monitoring Well SM-7 Depth - 55' Top of Pipe Elevation - 7800' Pipe 2.5' Above Ground Initiated 8/22/1985 8/22/1985 Activated 10/1!1997 10/1/1997 Date 11/27/2008 6119/2006 Summary Information Field ~ parame9eTS ,'=. 8aseline Operation UNITS Min Ave Max Min Ave Max Static Water Level Feet 18.2 26.2 32.3 0.0 27.6 45.0 29.13 25.18 Water Elevation Feet 7767.7 7773.8 7781.8 7755.0 7772.4 7800.0 7770.87 7774.82 Tem erature Celsius 6.0 9.2 15.8 8.4 8.1 10.3 8.8 9.5 Canductiviry umhos/cm 180 287 510 180 287 580 190 200 pH su 6.8 7.6 8.5 6.8 7.3 7.8 7.8 7.4 Field Comments Lab - ParameEers - - UNITS Bicarbonate mg/L 102 165 680 64 129 198 107 130.44 Carbonate mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL 0 Chloride mg/L 2 5 13 <MDL 3 11 <MDL 11.26 Contluclivity umhos/cm 229 280 362 218 279 401 233.8 280.8 Hardness m /L 103 139 193 83 125 192 83.19 97.43 H su 6.5 7.2 8.0 6.5 7.2 8.2 7.97 8.2 ResidueFilterable-7DS mg/L 117 184 220 110 174 243 243 188 ResidueNOnFiI[erable-7SS mg/L 8 257 848 <MDL 47 154 3 14 SAR 0.19 0.24 0.29 0.26 0.31 0.46 0.29 0.463 Sulfate m /L <MDL 19 78 <MDL 16 30 11.94 11.94 Calcium Dissolved m /L 1.9 40.4 59.0 20.8 37.5 59.2 20.83 28.25 Magnesium (Dissolved) mg/L 6.0 7.9 11.0 5.5 7.5 11.1 7.57 6.53 Sodium (Dissolved) m /L 6.0 6.8 8.3 6.2 7.8 10.5 6.23 10.51 TDS Ratio (grav./talc.) 0.95 1.07 1.19 0.95 1.14 1.58 1.58 0.95 Shallow monitoring wells SM-7 through SM-11 were constmcfed in 1985 in order to gather additional in/ormation on alluvia Ucolluvial deposds within the permit boundary. They are depicted on Map 4-1. 8aseline Information for Point SM07 is derived from events beginning on 8/22/85 through 10/1/97. Point inFlUenceo by mining on 10/1/97. Ground Water Figure No. 22