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Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2007 Annual Hydrology Report <br />SM06 <br />Monitoring Well SM-6 <br />Depth - 50' <br />Top of Pipe Elevation - 7480' <br />Pipe 2.5' Above Ground <br />Initiated 8/311985 8/3/1985 <br />Activated <br />Date 12113!2007 6/19/2007 <br />• <br />• <br />Summary Information <br />Field <br />Parameters Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Static Water Level Feet 9.6 15.7 29.9 17.77 14.07 <br />Water Elevation Feet 7450.1 7464.3 7470.4 7462.23 7465.93 <br />Tern erature Celsius 6.0 9.5 20.0 8.6 8.7 <br />Conductivity umhos/cm 440 740 1133 800 790 <br />pH su 6.9 7.9 8.6 8.3 8 <br />Field Comments <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate mg/L 296 430 577 315.01 340.42 <br />Carbonate mg/L <MDL 2.4 23.7 23.7 <MDL <br />Chloride mg/L <MDL 7.5 33.8 2.35 4.53 <br />Conductivity umhos/cm 391 825 1240 842.65 821 <br />Hardness mg/L 37.0 130.6 514.0 102.2 90.63 <br />H su 7.2 8.0 8.8 8.76 7.84 <br />ResidueFilterable-TDS mg/L 256 514 730 578 523 <br />ResidueNonFilterable-TSS mg/L <MDL 294 6760 49 25 <br />SAR 0.61 7.27 18.80 8.59 8.602 <br />Sulfate mg/L 33.0 56.1 221.0 44.86 52.27 <br />Calcium Dissolved) m /L 1.9 30.8 131.0 27.7 20.3 <br />Magnesium (Dissolved) mg/L 3.0 12.4 62.3 8.02 9.7 <br />Sodium (Dissolved) mg/L 19.0 159.6 264.0 199.7 188.2 <br />TDS Ratio (grav./talc.) 0.62 0.96 1.08 0.97 0.85 <br />The area of concern for monitoring point SMO6 has not been affected by the mining operation. Therefore, all recorded <br />monitoring events are considered Baseline. <br />Shallow monitoring wells SM-1 through SM-11 were constructed in 1985 in order to gather additional information <br />on alluviaUcolluvia/deyosits within the permit boundary. They are depicted on Map 4-1. <br />Baseline Information Collection initiated on 8/3/85 and not yet considered complete. <br />Point SM06 has not been influenced by mining. <br />Ground Water <br />Figure No. 12 <br />