2010-03-08_REPORT - C1996083 - Laserfiche WebLink

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Bowie Resources, LLC Surface Water Bowie No. 2 Mine 0 2009 Annual Hydrology Report NFG -low North Fork - Drainage System Elevation - 6680 Initiated 9/3011996 9/30/1996 9/30/1996 9/30/1996 9/30/1996 Activated 0 3/31/1997 3/31/1997 3/31/1997 3/31/1997 3/3111997 Date § 11/24/2009 9/22/2009 8/20/2009 6/6/2009 3/17/2009 Summary Information • • 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. 123 Baseline Operation UNITS Min Ave Max Min Ave Max Flow 99 292 610 53 472 2720 75 85 243 1120 204 FieldComment ph 8.1 8.4 8.7 7.6 8.3 8.8 8.4 8.2 8.4 7.8 7.7 Conductivity JCFS 160 180 200 50 176 290 250 240 240 80 160 Tem erature 4.0 8.5 14.6 0.3 11.4 22.3 2.9 8.4 13.1 11.9 6.5 DO 0.0 8.0 11.5 10.2 8.8 8.81 8 1 9 UNITS Bicarbonate mg/L 95 100 105 35 83 124 124.05 39.02 Chloride mg /L 2.00 2.50 3.00 <MDL 2.46 5.00 2.33 2.43 <MDL Chromium III Crlll mg /L <MDL <MDL <MDL <MDL Chromium VI CrIV mg /L <MDL <MDL <MDL <MDL Cyanide, Total mg /L <MDL <MDL <MDL <MDL Conductivity umhos/cm 201 222 242 93 193 308 307.58 133.22 Hardness mg /L 84 851 85 <MDL 80 150 107.06 124.91 57.76 Nitrate mg /L <MDL 0,081 0.16 <MDL 0.42 3.90 <MDL1 1.95 <MDL Nitrite mg /L <MDL <MDLI <MDL <MDL 0.002 0.010 <MDL 0.01 Ammonia mg /L <MDL <MDL <MDL <MDL 0.05 0.31 0.31 Oil & Grease mg /L <MDL <MDL <MDL <MDL 4 5 4.54 <MDL pH su 8.0 8.0 8.0 7.0 7.9 8.8 8.18 7.59 7.5 Phosphate mg /L <MDL <MDL <MDL <MDLl 0.021 0.10 <MDL <MDL ResidueFilterable -TDS mg /L 130 140 150 50 138 280 174 1 213 64 ResidueNonFilterable -TSS mg /L <MDL 3 6 <MDL 20 141 7 17 SAR 0.55 0.611 0.66 <MDL 0.56 1.65 1.19 0.16 Sulfate mg /L 10.0 15.0 20.0 <MDL 16.9 31.3 2.47 4.12 4.94 Sulfide S mg /L <MDL 0.04 0.04 <MDL Aluminum mg /L 0.10 0.15 0.21 <MDL 0.32 1.32 0.085 <MDL Arsenic mg /L <MDL 0.001 0.001 <MDL 0.00161 0.0110 0.011 0.00013 <MDL Boron mg /L 0.02 0.43 1.35 1 1.35 Cadmium mg /L <MDL <MDL <MDL <MDL 0.0026 0.0180 0.001 <MDL 0.018 Calcium mg /L 24.6 24.81 25.0 9.7 23.6 40.4 31 33.6 19.19 Copper mg /L <MDL <MDLI <MDL <MDL 0.016 0.198 0.006 0.004 0.01 Iron (Dissolved) <MDL <MDL <MDL <MDL 0.03 0.14 0.04 Iron (Total) 0.14 0.21 0.27 <MDL 0.31 1.48 0.04 0.23 0.16 Lead <MDL 0.010 0.020 <MDL 0.0142 0.1500 0.05 <MDL 0.07 Magnesium Amg/L 5.30 5.50 5.70 2.00 5.46 12.68 7.2 9.96 2.39 Manganese (Dissolved) <MDL <MDL <MDL <MDL 0.220 2.900 <MDL Manganese (Total) 0.021 0.090 0.160 0.007 0.028 0.130 0.02 0.053 0.04 Mercury <MDL <MDLl <MDL <MDL 0.00006 0. 00020 0.00007 0.00009 0.0001 Molyebdenum mg /L <MDL <MDL <MDL <MDL 0.005 0.030 0.00056 <MDL Nickel mg /L <MDL 0.0101 0.010 0.01 Selenium mg /L <MDL <MDL <MDL <MDLI 0.0011 0.010 0.002 1 0.00056 <MDL Silver mg /L <MDL <MDL <MDL <MDL Sodium mg /L 11.5 12.2 12.9 3.01 13.61 33.8 28.81 9.6 Zinc mg /L 0.02 0.02 0.03 <MDLI 0.011 0.04M <MDLI 1 0.01 <MDL 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. 123