2011-04-18_REPORT - C1996083 (5)

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• Bowie Resources, LLC Bowie No. 2 Mine 2010 Annual Hydrology Report AW-15 Alluvial Well Top of Pipe Elevation - 5972.52 Depth - 86 Pipe.3' Above Ground Ground Water Initiated 12/2912003 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 Parameters l1NITS Summary Information Baseline Operation Min Ava Mar Min Avo MAY Static Water Level Feet 84.86 85.27 86.00 79.89 84.11 85.04 84.91 84.8 84.64 84.66 Water Elevation Feet 5886.5 5887.3 5887.7 5887.5 5888.4 5892.6 5887.61 5887.72 5887.88 5887.86 FieldComment ** ** ** ph su 7.0 7.3 7.7 7.4 Conductivity umhos/cm 3800 4580 5300 4500 Temperature Celsius 8.4 14.9 19.1 16.6 Lab Parameters UNITS Bicarbonate mg/L 507.3 518.2 529.1 Carbonate 4.34 5.61 6.88 Chloride 119.91 126.86 133.80 Conductivity dmhos/cm 4416 4914 5412 Hardness 1332.7 1409.6 1486.4 Nitrat e-Nitrite <MDL 1.21 1.21 Ammonia 0.269 0.458 0.647 pH su 7.98 8.17 8.36 Phosphate mg/L 0.11 0.13 0.14 ResidueFilterable-TDS mg/L 3388.0 4090.7 4793.3 Sulfate mg/L 1563.7 2175.05 2786.42 Arsenic mg/L 0.018 0.019 0.019 Cadmium mg/L <MDL 0.030 0.030 Calcium mg/L 202.50 217.15 231.80 Iron (Dissolved) mg/L 0.68 1.76 2.84 Iron (Total) 1`11 /L 1.92 2.52 3.12 Magnesium (Dissolved) mg/L 200.9 210.6 220.4 Manganese (Dissolved) mg/L 0.040 0.352 0.664 Manganese (Total) mg/L 0.122 0.412 0.701 Mercury mg/L 0.00003 0.00006 0.00010 Selenium mg/L 0.039 0.058 0.077 Sodium mg/L 428.25 969.13 1510.00 Zinc mg/L 0.018 0.037 0.056 Just enough water for field parameters Not enough water for field parameters Alluvial Wells AW-15 through AW-17 are located north of Old State Highway 133, below the GOB Pile. • Baseline Information for AW-15 is derived from events beginning on 12/29/03 through 9/27/04. Point influenced by mining on 9/27/04. Figure No. 169