2011-04-18_REPORT - C1996083 (5)

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Bowie Resources, LLC Bowie No. 2 Mine 2010 Annual Hydrology Report AW-16 Alluvial Well Top of Pipe Elevation - 5964.67 Depth - 75 Pipe.8' Above Ground Ground Water Initiated 12/29/2003 12/29/2003 12/29/2003 12/29/2003 Activated 9/27/2004 9/27/2004 9/27/2004 9/27/2004 Date 12/8/2010 9/22/2010 6/22/2010 3/30/2010 Field Parnmal tart IINITR Summary Information Baseline Operation Min Ave Max Min Ave Max Static Water Level Feet 68.00 69.23 70.48 68.90 71.01 72.76 72.76 72.43 71.92 71.74 Water Elevation Feet 5894.2 5895.4 5896.7 5891.9 5893.7 5895.8 5891.91 5892.24 5892.75 5892.93 FieldComment ph su 7.9 7.9 7.9 7.0 7.4 8.0 7.3 7.8 7.3 7.2 Conductivity umhos/cm 740 740 740 750 3331 6200 4300 4300 3600 4700 Temperature Celsius 13.7 13.7 13.7 10.2 13.6 16.9 11.8 13.1 13.7 13 Lab Parameters UNITS Bicarbonate mg/L 558.0 610.0 661.9 Carbonate mg/L <MDL <MDL <MDL Chloride mg/L 43.6 49.1 54.5 Conductivity umhos/cm 5313.4 5876.3 6439.2 Hardness mg/L 2304.4 2531.6 2758.8 Nitrate-Nitrite mg/L <MDL 1.49 1.49 Ammonia mg/L <MDL 4.0 4.0 pH su 7.7 7.8 8.0 Phosphate mg/L 0.60 1.72 2.84 ResidueFilterable-TDS 5604 5770 5935 Sulfate 2903.8 2949.7 2995.6 Arsenic 0.021 0.084 0.146 Cadmium A 0.034 0.042 0.050 Calcium 328.8 343.9 359.0 Iron Dissolved 0.08 0.08 0.08 Iron otal mg/L 0.12 10.08 20.04 Magnesium (Dissolved) mg/L 380.3 416.3 452.3 Manganese (Dissolved) mg/L 0.0 0.258 0.510 Manganese (Total) mg/L 0.0 1.126 2.240 Mercury mg/L 0.00005 0.00006 0.00007 Selenium mg/L 0.009 0.025 0.040 Sodium mg/L 181.8 769.1 1356.5 Zinc mg/L 0.02 0.30 0.57 Alluvial Wells AW-15 through AW-17 are located nosh of Old State Highway 133, below the GOB Pile. Just enough water for field parameters • • Baseline Information for AW-16 is derived from events beginning on 12/29/03 through 9/27/04. Point influenced by mining on 9127104. Figure No. 170