2009-04-13_REPORT - C1996083 (4)

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Bowie Resources, LLC Surface Water Bowie No. 2 Mine • 2008 Annual Hydrology Report HUB-low Hubbard Creek - Drainage System Elevation - 5880 Initiated 9/30/1996 9/30/1996 9/30/1996 F-9/30/19961 Activated :: 6/23/1999 L 6/23/1999 6/23/1999 6/23/1999 Date 11/25/2008 9/22/2008 6/1812008 4/22/2008 Summary Information • eld Fara,ieter: Baseline Operation UNITS Min Ave Max Min Ave Max Flow 2.90 19.67 85.51 0.06 26.68 294.00 0.73 0.66 141 294 FieldComment h 8.0 8.5 9.3 7.1 8.2 9.0 7.4 8.3 8.2 8.2 Conductivity m 80 198 390 50 287 850 330 330 50 90 Temperature 2.3 11.1 20.2 0.3 9.7 19.7 0.3 12.8 10.1 5.0 DO mg/L 6.4 8.2 10.0 7.1 9.3 11.7 10.2 7.7 8.2 9.5 Lab Faranneiers UNITS Bicarbonate 62 115 155 40 175 690 152.18 40.19 Chloride <MDL 1.7 3.0 <MDL 3.2 7.0 1 .76 2.76 Conductivity /cm 118 254 406 104 349 609 403 104.2 Hardness p 49 96 138 31.28 142.04 262.00 156.55 31.28 Nitrate-Nitrite <MDL 0.05 0.29 <MDL 0.28 1.62 <MDL 0.41 Oil and Grease mg/L <MDL 3.0 3.0 <MDL 3.0 3.0 <MDL <MDL H su 7.5 7.9 8.3 7.8 8.0 8.4 7.9 8.2 Phosphate mg/L <MDL 0.004 0.030 <MDL 0.02 0.06 <MDL 0.02 ResidueFilterable-TDS mg/L 100 163 260 60 232 380 271 125 ResidueNonFilterable-TSS mg/L <MDL 33 170 <MDL 13 33 10 33 SAR <MDL 0.47 1.04 <MDL 0.91 1.96 0.71 0.41 Sulfate mg/L <MDL 17 50 <MDL 47 102 39.1 6.59 Aluminum mg/L 0.05 0.58 1.91 <MDL 0.26 1.14 0.90 1.14 Arsenic mg/L <MDL 0.0004 0.0010 <MDL 0.0030 0.0160 0.008 0.0007 Cadmium mg/L <MDL <MDL <MDL <MDL 0.005 0.020 0.01 0.003 Calcium mg/L 13.8 26.2 36.7 8.5 37.1 70.7 37.2 8.5 Copper mg/L <MDL 0.001 0.010 <MDL 0.012 0.060 0.06 0.019 Iron (Total) mg/L 0.09 0.54 1.44 0.06 0.24 1.13 0.06 0.40 Lead mg/L <MDL <MDL <MDL <MDL 0.0117 0.0700 0.02 0.03 Magnesium mg/L 3.6 7.4 11.2 2.4 12.3 32.6 15.5 2.4 Manganese (Total) mg/L 0.009 0.016 0.034 0.005 0.021 0.050 0.05 0.029 Mercury mg/L <MDL <MDL <MDL <MDL 0.00007 0.00018 0.000067 0.00006 Mol ebdenum mg/L <MDL <MDL <MDL <MDL 0.008 0.030 0.008 0.002 Selenium mg/L <MDL 0.001 0.010 <MDL 0.0037 0.0200 <MDL 0.001 Sodium mg/L 5.3 15.9 27.6 4.3 30.0 73.0 44.6 5.3 Zinc mg/L <MDL 0.01 0.04 <MDL 0.008 0.037 0.037 0.008 The Lower Hubbard Creek monitoring point is located at a concrete box culvert under the Union Pacific railroad track just above the North Fork of the Gunnison. Flow values are taken from the USGS information for station #09132960. • Baseline Information for Point Hub-low is derived from events beginning on 9/30/96 through 6/23/99. Point influenced by mining on 6/23/99. Figure No. 117