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Bowie Resources, LLC Surface Water <br />Bowie No.1 Mine <br />• 2007 Annual Hydrology Report S1404 <br />West Roatcap Creek -Spring 14-4 <br />Elevation - 7480 <br />Initiated 12/2/1996 12/2/1996 12/2/1996 12/2/1996 <br />Activated 11/22/1998 11/22/1998 11/22/1998 11!22/1998 <br />Date 11/15/2007 8/23/2007 6/19/2007 4/26/2007 <br />Summary Information <br />• <br />• <br />Field <br />Parameters Baseline Operation ` <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0 1.51 5.00 0 0.27 3.00 0 0 0.38 0.75 <br />Temperature Celsius 4.4 8.7 12.4 0.5 9.3 20.1 10.5 8.9 <br />Conductivi umhos/cm 760 883 1000 670 860 960 760 800 <br />pH su 6.8 7.3 7.6 7.0 7.3 7.7 7.5 7.2 <br />Field Comments Large Seep Large Seep <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate m /L 352 354 355 289.1 370 402 289.1 <br />Carbonate mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Chloride mg/L 19 20 21 4.53 18 28 4.53 <br />Conductivity umhos/cm 780 800 819 820 898 979 826 <br />Hardness mg/L 398 401 404 343.13 383 455 343.13 <br />H su 8.0 8.0 8.0 7.17 7.7 8.3 7.17 <br />ResidueFilterable-TDS mg/L 480 490 500 460 591 641 595 <br />ResidueNonFilterable-TSS mg/L 6 7 8 <MDL 34 66 23 <br />SAR 0.93 0.96 0.98 0.98 1.20 1.677 1.677 <br />Sulfate mg/L 80 80 80 30 94 130 65.44 <br />Calcium Dissolved m /L 101 104.0 107 69.8 94.6 114 69.8 <br />Magnesium Dissolved) mg/L 33.3 34.4 35.4 31.9 35.6 41.3 41 <br />Sodium (Dissolved) mg/L 42.5 43.6 44.7 42.4 53.5 71.4 71.4 <br />TDS Ratio (grav./talc.) 1.01 1.01 1.01 0.95 1.04 1.13 1.1 <br />This spring is a marshlike area of about 20' x 20'. (Hanna, 99) <br />Baseline Information for Point S1404 is derived from events beginning on 12/2/96 through 11/22/98. <br />Point influenced by mining on 11/22/98. <br />Figure No. 18 <br />