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Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2008 Annual Hydrology Report <br />P8500 <br />Stephen's Gulch - Pond 85 <br />Depth - 4' <br />Elevation -7580 <br />Surface Water <br />Initiated 2/22/1983 2/22/1983 2/22/1983 2/22/1983 <br />Activated 12/1/1992 12/1/1992 12/1/1992 12/1/1992 <br />Date 11129/2008 8/19/2008 6/24/2008 5/1512008 <br />Summary Information <br />Baseline Operation <br />Flow GPM 0.0 19.4 366.6 0.0 63.7 480 30 75 480 75 <br />Freeboard Feet 0.0 0.0 0 0.0 0.1 2.6 0 0 0 0 <br />Temperature Celsius 1.0 15.8 27.7 0.9 10.4 20.4 4.1 6.8 8.2 10.9 <br />Conductivity umhos/cm 156 393 680 40 289 670 180 90 90 160 <br />pH su 5.7 8.5 10.9 7.2 8.0 9.7 7.2 7.7 7.8 7.8 <br />Field Comments <br />0 <br />I <br />?J <br />`' - UNITS <br />Bicarbonate mg/L 5 177 336 18 96 323 53.92 <br />Carbonate mg/L <MDL 89.1 550 <MDL 0.7 6 <MDL <br />Chloride mg/L 1.0 42.8 258 <MDL 8 33.78 1 Al <br />Conductivity umhos/cm 8 395 610 79 200 556 133 <br />Hardness mg/L 61.0 173.1 258 23 92 271 45.6 <br />H su 7.5 8.4 12 7.4 7.9 8.5 7.77 <br />ResidueFilterable-TDS mg/L 114.0 256.3 410 60 124, 320 92 <br />ResidueNonFilterable-TSS mg/L 4.0 31.7 128 <MDL 17.6 53 17 <br />SAR 0.4 1.0 1.85 <br />, 0.22 1.50 14.8 0.475 <br />Sulfate mg/L 8.0 30.2 66 <MDL 22 93.02 8.23 <br />Calcium (Dissolved) mg/L 16.0 42.2 67 4.9 21.3 49.6 11.42 <br />Magnesium (Dissolved) mg/L 5.0 16.1 24 2.6 9.4 39.7 4.15 <br />Sodium (Dissolved) mg/L 8.0 29.8 52 2.9 48.0 554 7.4 <br />TDS Ratio (grav./calc.) 0.12 0.93 1.61 1.06 <br />This large pond is approximately 300'x 400' and is found near the Steven's Gulch Road. (Hanna, 99) <br />Baseline Information for Point P8500 is derived from events beginning on 2122/83 through 12/1/92. <br />Point influenced by mining on 12/1/92. <br />Figure No. 34