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• <br />Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2008 Annual Hydrology Report <br />AW-2 <br />Alluvial Well <br />Top of Pipe Elevation - 5966.62' <br />Depth - 50.4' <br />Pipe 1.32' Above Ground <br />Ground Water <br />Initiated 11/23/1996 11/2311996 11/23/1996 11/23/1996 <br />Activated 3/27/1997 3/27/1997 3/27/1997 3/27/1997 <br />Date 1211012008 9/23/2008 6!25/2008 3/26/2008 <br />Summary Information <br />• <br />Field <br />Parameters Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Static Water Level Feet 50.35 50.65 50.81 35.55 48.82 51.76 47.36 46.03 43.33 40.54 <br />Water Elevation Feet 5915.8 5916.0 5916.3 5914.9 5917.8 5931.1 5919.26 5920.59 5923.29 5926.08 <br />FieldComment <br />ph su 6.9 7.1 7.5 7.4 7.1 7.1 7.1 <br />Conductivity umhos/cm 1075 6339 10200 7600 6600 5000 3900 <br />Temperature Celsius 11.8 14.9 18.4 12.6 16.1 15.1 15.6 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate mg/L 345 756 906 345.18 737.48 <br />Carbonate mg/L <MDL 11.29 26.98 <MDL <MDL <br />Chloride mg/L 55 180 371 370.63 54.5 <br />Conductivity umhos/cm 4030 7567 12080 7507 5212.16 <br />Hardness mg/L 1070 2993 4150 2392.16 2142.72 <br />Nitrate-Nitrite mg/L 1.35 4.83 9.65 4.66 1.35 <br />Ammonia mg/L <MDL 2.16 4.60 3.16 0.803 <br />pH su 7.1 7.8 8.4 8.0 7.9 <br />Phosphate mg/L <MDL 0.04 0.08 0.02 0.03 <br />ResidueFilterable-TDS mg/L 319 6966 10906 8800 5169 <br />Sulfate m /L 847 3290 6408 3415.87 2731.79 <br />Arsenic mg/L <MDL 0.130 0.347 0.347 0.015 <br />Cadmium mg/L <MDL 0.0126 0.0340 0.034 0.031 <br />Calcium mg/L 148 333 518 388.4 270.35 <br />Iron (Dissolved) 0.05 0.16 0.26 0.121 0.05 <br />Iron (Total) 0.11 0.91 3.20 0.309 0.11 <br />Magnesium 1 170 572 762 762 356.4 <br />Manganese (Dissolved) mg/L <MDL 0.08 0.16 0.156 0.02 <br />Manganese (Total) 0.02 0.10 0.19 0.192 0.037 <br />Mercu <MDL 0.00011 0.00022 0.000061 0.000025 <br />Selenium mg/L 0.01 0.11 0.54 0.044 0.036 <br />Sodium mg/L 21 944 1497 1341, 950 <br />Zinc mg/L <MDL 0.04 0.08 0.0261 1 0.013 <br />Alluvial Wells AW-1 through AW-6 are located north of Old State Highway 133, near the entrance to the mine. <br />0 <br />Baseline Information for Point AW-2 is derived from events beginning on 11/23/96 through 3/27/97. <br />Point influenced by mining on 3/27/97. <br />Figure No. 153