2011-04-18_REPORT - C1996083 (5)

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Bowie Resources, LLC Bowie No. 2 Mine 2010 Annual Hydrology Report Summary Information AW-11 Alluvial Well Elevation - 5884 Depth - 60.86' Ground Water Initiated 2/20/2000 12/20/2000 12/20/2000 12/20/2000 Activated 2/28/2002 U 2/28/2002 2/28/2002 2/28/2002 Date 12/1/20101 9/22/2010 612012010 3/30/2010 Field Parameters Baseline Operation UNITS Min Ave Max Min Ave Max Static Water Level Feet 11.92 38.20 50.31 19.13 42.69 52.49 52.33 43.51 41.26 52.49 Water Elevation Feet 5833.7 5845.8 5872.1 5831.5 5841.3 5864.9 5831.67 5840.49 5842.74 5831.51 FieldComment ph su 6.7 7.3 7.5 6.9 7.5 7.8 7.7 7.5 7.3 7.6 Conductivity umhos/cm 390 760 1060 480 967 1480 1140 1010 740 1040 Temperature Celsius 11.2 13.4 15.7 10.0 13.0 15.3 10.3 13.4 12.6 13.11 Lab Parameters UNITS Bicarbonate mg/L 350 367 384 241.7 325.7 403.0 333.06 303.55 Carbonate mg/L <MDL <MDL <MDL <MDL 4.59 6.88 <MDL <MDL Chloride mg/L 2 3 3 <MDL 27.0 255.2 10.21 255.24 Conductivity umhos/cm 671 850 1030 661 1191 2870 1462 2870 Hardness mg/L 587 587 587 265.0 565.1 911.7 462.95 463.08 Acidity mg/L 5.19 6.04 6.88 6.88 5.19 Nitrate-Nitrite mg/L 0.10 0.28 0.56 <MDL 0.81 2.70 0.45 <MDL Ammonia mg/L <MDL 0.05 0.08 <MDL 0.10 0.43 0.002 0.068 pH su 7.2 7.5 7.8 7.2 7.9 8.5 7.2 7.8 Phosphate mg/L <MDL 0.14 0.39 <MDL 0.09 0.21 <MDL <MDL ResidueFilterable-TDS mg/L 360 553 690 350 784 2150 790 2150 Sulfate mg/L 20 150 250 4.94 217.15 510.00 263.4 144 Arsenic (Dissolved) mg/L <MDL <MDL <MDL <MDL 0.031 0.280 0.013 0.28 Cadmium (Dissolved) mg/L <MDL <MDL <MDL <MDL 0.006 0.024 0.01 0.005 Calcium (Dissolved) mg/L 70.6 92.9 110.0 44.3 94.9 147.0 91.4 83.7 Iron (Dissolved) 0.04 0.05 <MDL 0.27 2.46 0.02 0.02 Iron (Total) 4.93 9.97 0.07 4.20 24.30 0.63 0.95 Magnesium (Dissolved) g/L 46 64.6 75.8 37.5 78.4 172.2 57 61.7 Manganese (Dissolved) 0.02 0.03 <MDL 0.260 1.310 0.01 0.002 Manganese otal j 0.34 0.57 <MDL 0.578 2.540 0.184 0.225 Mercury Dissolved <MDL <MDL <MDL 0.00012 0.00027 0.00009 0.00026 Selenium (Dissolved) L 0.001 0.002 <MDL 0009 0.045 0.016 0.004 Sodium (Dissolved) 19.37 22.9 11.0 35.1 68.7 27 31 Zinc (Dissolved) mg/L <MDL 0.01 0.02 <MDL 0.02 0.07 0.023 0.01 Alluvial Wells AW-11 through AW-13 are located north of the Union Pacific Railroad. They were installed in 2000 to develop baseline data for a new train loadout. E • • Baseline Information for AW-11 is derived from events beginning on 12/20/00 through 2/28/02. Point influenced by mining on 2/28/02. Figure No. 166