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<br />Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2007 Annual Hydrology Report <br />C-Gulch-lo <br />Drainage System <br />Elevation - 5960 <br />Surtace Water <br />Initiated 2/28!1995 2/28/1995 2/28/1995 2/28/1995 <br />Activated 3/30!1997 3/30/1997 3/30/1997 3/30/1997 <br />Date 12/6/2007 9/25/2007 7/1/2007 3/20/2007 <br /> <br />• <br />Field <br />Summary Information <br />Baseline Operation <br />A.... ~A~v Ain A~ic MaY <br />rarameters <br />Flow ~~~~~~ <br />GPM ~~~~~~ <br />0 ,,,,~ <br />0 ~.~u,. <br />0 ,..,.. <br />0.0 ..._ <br />12.5 ..._-- <br />240.0 <br />0 <br />0 <br />3.75 <br />3.75 <br />FieldComment Drip Only Trickle <br />h su 6.5 7.8 9.1 7.0 8.0 <br />Conductivity umhos/cm 550 4233 10400 3300 5200 <br />Temperature Celsius 0.2 11.2 21.4 16.2 10.5 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate mg/L 225 529 1240 676.9 <br />Chloride mg/L 54 132 295 294.94 <br />Conductivity umhos/cm 1120 4529 9300 2978 <br />Hardness mg/L <MDL 2250 5680 4500.1 <br />Nitrate-Nitrite mg/L 0.05 4.73 16.70 4.58 <br />Oil & Grease mg/L <MDL 70.83 239.00 " <br />pH su 7.5 8.1 8.8 7.7 <br />Phosphate mg/L <MDL 2.10 15.48 15.48 <br />ResidueFilterable-TDS mg/L 720 4363 9750 2540 <br />ResidueNonFilterable-TSS mg/L <MDL 3270 33266 <br />SAR <MDL 4.85 10.30 " <br />Sulfate mg/L 144 2402 6460 144.27 <br />Aluminum mg/L <MDL 17.20 88.30 " <br />Arsenic mg/L <MDL 0.010 0.070 0.019 <br />Cadmium mg/L <MDL 0.001 0.006 0.00009 <br />Calcium mg/L 61 423 1210 1154.4 <br />Copper mg/L <MDL 0.029 0.160 " <br />Iron (Total) mg/L 0.07 23.88 102.00 88.80 <br />" <br />Lead mg/L <MDL 0.0706 0.3860 <br />Magnesium mg/L 40 311 770 392.8 <br />Manganese Total) mg/L <MDL 1.15 7.03 7.03 <br />Mercu mg/L <MDL 0.00004 0.00020 0.000033 <br />Molyebdenum mg/L <MDL 0.003 0.026 " <br />Selenium mg/L 0.001 0.029 0.187 0.187 <br />Sodium mg/L 151 655 1750 582.0 <br />Zinc mg/L <MDL 0.45 2.97 2.97 <br />The Lower C Gulch monitoring point is just above Sediment Pond C. All C Gulch flow is contained in Pond C. This point exhibited no flows <br />before the construction of the mine. The mine construction and now the mine operation provide flow to this point. <br />"Lab mistakenly ran this sample as ground waterinstead of surface water. Therefore, some of the parameters are <br />not available for this sample. <br />Baseline Information for C-Gulch-lo is derived from events beginning on 2/28/95 through 3/30/97. <br />Point influenced by mining on 3/30/97. <br />Figure No. 89 <br />