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• <br />Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2008 Annual Hydrology Report <br />• <br />SW06 <br />Steven's Gulch <br />Elevation - 6600 <br />• <br />Surface Water <br />Initiated 1/1/1983 1/111983 1/1/1983 1/1/1983 1/1/1983 1983 1/111983 1/1/1983 1/1/1963 1/1/1983 <br />Activated 12121/1986 12/21/1986 1221/1986 12/21/1986 12/2111986 12121/1986 1221/1986 12/21/1986 12/21/1986 1221/1986 <br />Date 12/18/2008 11/182008 10117/2008 9/162008 8/152008 7/172008 6/202008 528/2008 5/212008 42012008 <br />Summary Information <br />TI <br />C <br />(D <br />z <br />O <br />N <br />N <br /> <br />xtw E 3r Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow <br />Water Level in Flume <br />Temperature <br />Conductivity <br />pH CFS <br />Feet <br />Celsius <br />umhos/cm <br />su 0 <br /> <br />-0.5 <br />170 <br />7.3 47T4 16.9 <br /> <br />23.7 <br />1605 <br />9.9 0.0 <br />0.00 <br />0.0 <br />40 <br />6.9 1.6 <br />0.08 <br />9.8 <br />537 <br />8.3 ]9.0 0.026 <br />0.02 <br />0.04 <br />550 <br />7.9 0.001 <br />0.002 <br />4.2 <br />660 <br />7.8 0.078 <br />0.04 <br />7.1 <br />500 <br />8.2 0.230 <br />0.08 <br />9 <br />220 <br />7.8 0.146 <br />0.06 <br />16.6 <br />270 <br />7.9 0.186 <br />0.07 <br />16.6 <br />230 <br />8.3 0.326 <br />0.1 <br />16.6 <br />230 <br />8.3 0.615 <br />0.15 <br />12.9 <br />300 <br />8.2 1.120 <br />0.22 <br />12.9 <br />230 <br />8.1 12.000 <br />1 <br />3.7 <br />100 <br />8.4 <br />Field Comments <br />% <br />{ , Ex k}? ,,; <br />UNITS <br />Bicarbonate mg/L 89 6 83 223 456 273.1 135.94 122.87 90.3 <br />Carbonate mg/L <MDL 7 <MDL 2.6 12.0 <MDL 3.9 <MDL <MDL <br />Chloride mg/L 2 1 <MDL 13.5 43.0 8.46 4.55 2.76 2.57 <br />Conductivity umhos/cm 170 0 149 594 1560 647.4 292.52 288.3 303.74 <br />Hardness mg/L 72 4 58 244 616 268.92 138.11 124.03 161.13 <br />pH su 6.8 .7 7.2 8.1 8.5 8.17 8.4 7.96 8.151 <br />ResidueFilterable-TDS m /L 120 94 120 405 1130 490 209 205 202 <br />ResidueNonFilterable-TSS mg/L 2 38 <br />J <MDL 28 268 15 <MDL 11 18 <br />SAR 0.56 60 0.56 1.10 2.06 1.4 0.626 0.617 0. 919 <br />Sulfate mg/L 14 .0 <MDL 109.4 450.0 82.73 9.88 9.47 15.23 <br />Calcium (Dissolved) mg/L 19 .0 9.6 55.4 132.0 69.6 34.2 27.41 42.1 <br />Magnesium (Dissolved) <br />Sodium (Dissolved) mg/L <br />m /L 6 <br />11 47?8 .0 <br />.0 <br />85.0 7.2 <br />8.0 26.2 <br />41.8 69.5 <br />108.0 31 <br />52.8 12.8 <br />17.15 21 26.92 <br />TDS Ratio (grav./talc.) 0.89 1.08 1.72 0.96 0.97 1.04 1.06 <br />The Stevens Gulch stream gauge, SW05, is lo cated near Bowie No, 1 mine's timber storage area in the NE114NW114, Sec 25, T13S, R92W, of the 6th P.M. A 36" Parshall flume <br />was installed at this location. <br />Baseline Information for Point SW05 is derived from events beginning on 1/1/83 through 1221186. <br />Point influenced by mining on 12/21186.