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Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2015 Annual Hydrology Report <br />Summary Information <br />SW05 <br />Steven's Gulch <br />Elevation - 6600 <br />Initiated <br />§ 1/1/83 1/1/83 1/1/83 1/1/83 1/1/83 1/1/83 1/1/83 1/1/83 <br />Activated <br />Date <br />0 1 1 1 1 1 1 1 12/21/86 <br />N 11/19/15 10/8/15 9/10/15 8/2/15 6/15/15 5/29/15 4/29/15 3/26/15 <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Max <br />Operation <br />Min Ave <br />Max <br />Flow <br />CFS <br />0 <br />3.1 <br />16.9 <br />0.00 <br />1.34 <br />30.13 <br />0.00000 0.00000 0.00885 <br />0.11006 <br />0.11006 <br />0.14643 <br />0.43360 <br />0.22978 <br />Water Level in Flume <br />Feet <br />0.00 <br />0.08 <br />1.06 <br />0 0 0.01 <br />0.05 <br />0.05 <br />0.06 <br />0.12 <br />0.08 <br />Temperature <br />Celsius <br />-0.5 <br />10.8 <br />23.7 <br />0.0 <br />10.1 <br />23.6 <br />13.8 <br />17.1 <br />17.1 <br />16 <br />10.1 <br />6.8 <br />Conductivity <br />umhos/cm <br />170 <br />746 <br />1605 <br />40 <br />524 <br />2000 <br />1060 <br />490 <br />520 <br />670 <br />430 <br />570 <br />pH <br />su <br />7.3 <br />8.5 <br />9.9 <br />6.9 <br />8.3 <br />9.0 <br />8.6 <br />8.8 <br />8.8 <br />7.3 <br />8.2 <br />8.7 <br />Field Comments <br />No Flow <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />891 <br />302 <br />456 <br />83 <br />210 <br />456 <br />317 <br />246 <br />Carbonate <br />mg/L <br /><MDL <br />1 <br />7 <br /><MDL <br />3.33 <br />12.65 <br />10.3 <br />8.0 <br />Chloride <br />mg/L <br />2 <br />16 <br />31 <br /><MDL <br />13.87 <br />43.00 <br />22.5 <br />8.8 <br />Conductivity <br />umhos/cm <br />170 <br />734 <br />1290 <br />149 <br />572 <br />1560 <br />920 <br />461 <br />Hardness <br />mg/L <br />72 <br />312 <br />534 <br />35.6 <br />237.4 <br />625.7 <br />442 <br />203 <br />Acidity <br />mg/L <br />-330.0 <br />-42.4 <br />24.0 <br />-330 <br />-218 <br />pH <br />su <br />6.8 <br />8.1 <br />8.7 <br />7.2 <br />8.01 <br />8.6 <br />1 8.46 <br />1 <br />8.6 <br />ResidueFilterable-TDS <br />mg/L <br />120 <br />488 <br />794 <br />120 <br />392 <br />1130 <br />705 <br />332 <br />ResidueNonFilterable-TSS mg/L <br />2 <br />77 <br />438 <br /><MDL <br />28 <br />268 <br /><MDL <br />12.7 <br />SAR <br />0.56 <br />1.14 <br />1.60 <br />0.23 <br />1.06 <br />2.06 <br />1.25 <br />0.894 <br />Sulfate <br />mg/L <br />14 <br />131.5 <br />338.0 <br /><MDL <br />99.43 450.00 <br />233 <br />39.5 <br />Calcium (Dissolved) <br />mg/L <br />19 <br />71.8 <br />110.0 <br />6.8 <br />53.9 <br />132.0 <br />92.1 <br />49.8 <br />Iron (Dissolved) <br />mg/L <br />6 <br />32.1 <br />66.0 <br /><MDL <br />1 <br />0.08 <br />0.61 <br /><MDL <br />0.0116 <br />Iron (Total) <br />mg/L <br />11.00 <br />47.82 <br />85.00 <br />0.02 <br />0.34 <br />1.01 <br />0.085 <br />0.354 <br />Magnesium (Dissolved) <br />mg/L <br />6.0 <br />32.1 <br />66.0 <br />4.5 <br />26.6 <br />86.2 <br />51.6 <br />19.1 <br />Sodium (Dissolved) <br />mg/L <br />11.0 <br />47.8 <br />85.0 <br />0.0 <br />40.6 <br />115.0 <br />60.4 <br />27.6 <br />Manganese (Total) <br />mg/L <br /><MDL <br />3.27 <br />35.60 <br />, <br />0.0051 <br />0.0196 <br />TDS Ratio (gray./calc.) <br />% <br />0.83 <br />1.06 <br />1.72 <br />1 <br />The Stevens Gulch stream gauge, SW05, is located 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 12/21/86. <br />Point influenced by mining on 12/21/86. <br />Surface Water <br />Figure No. 35 <br />