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• <br />Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2008 Annual Hydrology Report <br />SP1306 <br />Steven's Gulch - Pond Spring 13-6 <br />Depth 4' <br />Elevation - 7590 <br />Surface Water <br />Initiated 7/5/1983 7/5/1983 7/5/1983 7/5/1983 <br />Activated <br /> <br />L <br />988 <br />/1988 <br />1/1 <br />1/1/1988 <br />1/1/1988 <br /> <br />Date E <br />008 <br />8/19/2008 <br />6/28/2008 <br />5/15/2008 <br />Summary Information <br />r? <br />?J <br />• <br /> Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0 0.75 3.76 0 0.59 3.91 0 0 0 0.38 <br />Freeboard Feet 0 0.00 0 0 0.89 4 0 0.41 0.32 0 <br />Temperature <br />Conductivity <br />pH Celsius <br />umhos/cm <br />su 5 <br />611 <br />7.2 14.0 <br />787 <br />7.8 24 <br />916 <br />8.4 0.3 <br />330 <br />6.9 12.9 <br />503 <br />8.0 25.6 <br />760 <br />8.9 12.1 <br />620 <br />7.6 <br />Field Comments Seep Seep Inflow Seep Inflow <br />4 r ? <br />?aC may` <br />UNITS <br />Bicarbonate mg/L 407 431 470 280 340 410 <br />Carbonate mg/L <MDL <MDL <MDL <MDL 3 26 <br />Chloride mg/L 5 9 12 2 6 8 <br />Conductivity umhos/cm 650 729 , 868 491 596 752 <br />Hardness mg/L 325 370 423 242 305 414 <br />H su 7.6 7.98 8.3 7 7.9 8.6 <br />ResidueFilterable-TDS mg/L 330 416 473 300 351 430 <br />ResidueNonFilterable-TSS mg/L 4 22 40 6 26 76 <br />SAR 0.59 0.71 0.92 0.35 0.43 0.60 <br />Sulfate mg/L 29 42 58 10 38 200 <br />Calcium (Dissolved) mg/L 63 , 71.50 87 51.0 61.9 86.5 <br />Magnesium (Dissolved) mg/L 39 46.50 50 28.0 36.7 48.0 <br />Sodium (Dissolved) mg/L 27 31.50 40 13.0 17.6 23.0 <br />Potassium mg/L <MDL 1.50 6 <br />TDS Ratio grav./calc.) <MDL 0.77 1.0111 111 <br />Spring and Pond 13-6 is a man made pond (approximately 25'x 25) and is fed by a spring located on the hillside above <br />the pond. (Gordon, 83) <br />Baseline Information for Point SP1308 is derived from events beginning on 7/5/83 through 1/1/88. <br />Point influenced by mining on 1/1/88. <br />Figure No. 39