2009-04-13_REPORT - C1996083 (4)

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Bowie Resources, LLC Surface Water Bowie No. 2 Mine • 2008 Annual Hydrology Report NFG-low North Fork - Drainage System Elevation - 6680 Initiated 9/30/1996 9/30/1996 9/30/1996 9/30/1996 9/30/1996 Activated 3/31/1997 3/31/1997 3/31/1997 3/31/1997 3/3111997 Date 11/25/2008 9/22/2008 8/11/2008 6/18/2008 4122/2008 Summary Information • C F t r Baseline Operation UNITS Min Ave Max Min Ave Max Flow CFS 99 292 610 53 484 2720 110 217 160 2720 1510 FieldComment ph su 8.1 8.4 8.7 7.6 8.3 8.8 7.6 8.1 7.9 8.1 8.3 Conductivity umhos/cm 160 180 200 50 174 290 260 230 140 50 130 Temperature Celsius 4.0 8.5 14.6 0.3 11.6 22.3 0.5 15.2 19.8 11.7 7.0 DO mg/L 0.0 7.9 11.5 10.2 7.5 7.9 8 9.5 Lab' Parameters UNITS Bicarbonate 95 100 105 35 83 123 120.96 34.84 Chloride 2.00 2.50 3.00 <MDL 2.46 5.00 1.76 2.46 3.88 Chromium III Crlll <MDL <MDL <MDL <MDL Chromium VI CrIV j <MDL <MDL <MDL <MDL Cyanide, Total <MDL <MDL <MDL <MDL Conductivity 201 222 242 93 191 283 276 100.6 Hardness 84 85 85 <MDL 78 150 149.85 60.52 33.95 Nitrate mg/L <MDL 0.08 0.16 <MDL 0.33 3.90 <MDL <MDL <MDL Nitrite <MDL <MDL <MDL <MDL 0.001 0.010 <MDL Ammonia <MDL <MDL <MDL <MDL <MDL <MDL <MDL Oil 8 Grease <MDL <MDL <MDL <MDL 3 3 <MDL <MDL pH 1 8.0 8.0 8.0 7.0 7.9 8.8 7.71 7.29 8.06 Phosphate mg/L <MDL <MDL <MDL <MDL 0.02 0.10 <MDL 0.1 ResidueFilterable-TDS 130 140 150 50 137 280 207 109 111 ResidueNonFilterable-TSS <MDL 3 6 <MDL 21 141 12 141 SAR 0.55 0.61 0.66 <MDL 0.55 1.65 0.739 0.399 Sulfate mg/L 10.0 15.0 20.0 <MDL 18.4 31.3 30.87 <MDL 8.64 Sulfide S mg/L <MDL 0.04 0.04 <MDL Aluminum mg/L 0.10 0.15 0.21 0.01 0.33 1.32 0.02 0.67 Arsenic mg/L <MDL 0.001 0.001 <MDL 0.0012 0.0090 0.004 0.0013 0.0007 Boron mg/L 0.02 0.28 0.82 0.51 Cadmium mg/L <MDL <MDL <MDL <MDL 0.0018 0.0110 0.011 0.001 0.001 Calcium mg/L 24.6 24.8 25.0 9.7 23.2 40.4 39.1 18.4 10.23 Copper mg/L <MDL <MDL <MDL <MDL 0.018 0.198 0.198 <MDL 0.019 Iron (Dissolved) mg/L <MDL <MDL <MDL <MDL 0.03 0.14 0.14 Iron (Total) mg/L 0.14 0.21 0.27 <MDL 0.33 1.48 0.059 0.2 0.95 Lead mg/L <MDL 0.010 0.020 <MDL 0.0102 0.1500 0.01 <MDL 0.01 Magnesium mg/L 5.30 5.50 5.70 2.00 5.35 12.68 12.68 3.54 2.04 Manganese (Dissolved) mg/L <MDL <MDL <MDL <MDL 0.220 2.900 0.002 Manganese (Total) mg/L 0.021 0.090 0.160 0.007 0.027 0.130 0.05 0.02 0.073 Mercury mg/L <MDL <MDL <MDL <MDL 0.00005 0.00020 0.00003 0.000063 0.00004 Molyebdenum mg/L <MDL <MDL <MDL <MDL 0.005 0.030 0.03 0.002 Nickel mg/L <MDL 0.010 0.010 0.01 Selenium mg/L <MDL <MDL <MDL <MDL 0.001 0.010 <MDL <MDL 0.0003 Silver mg/L <MDL <MDL <MDL <MDL Sodium mg/L 11.5 12.2 12.9 3.0 13.1 33.8 21.1 5.4 Zinc mg/L 0.02 0.02 0.03 <MDL 0.01 0.04 0.042 0.005 0.016 Field parameters, except flow, for the Lower North Fork of the Gunnison River are taken on the river approximately 1500' below the confluence of Terror Creek and the North Fork of the Gunnison. Flow data for the North Fork of the Gunnison river is obtained from USGS station #09132500. Baseline Information for Point NFG-low is derived from events beginning on 9/30/96 through 3/31/97. Point influenced by mining on 3/31/97. Figure No. 121