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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2013 Annual Hydrology Report B- Gulch -lo <br />Drainage System <br />Elevation - 5960 <br />Initiated <br />2/28/1995 <br />2/28/1995 <br />2/28/1995 <br />2/28/1995 <br />Activated <br />3/30/1997 <br />1 <br />3/30/1997 <br />3/30/1997 <br />3/30/1997 <br />Date <br />9/20/2013 <br />6/17/2013 <br />4/4/2013 <br />10/25/2012 <br />Summary Information <br />Field <br />Parameters <br />Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow <br />GPM <br />0 <br />0 <br />0 <br />0.00 <br />2.23 <br />40.00 <br />7.5 <br />9.38 <br />FieldComment <br />No Flow <br />No Flow <br />ph <br />su <br />6.5 <br />7.7 <br />8.8 <br />7.0 <br />8.8 <br />Conductivity <br />umhos /cm <br />470 <br />3706 <br />9800 <br />1930 <br />470 <br />Temperature <br />Celsius <br />0.5 <br />12.0 <br />24.6 <br />15.1 <br />1 <br />11.3 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg /L <br />115.6 <br />338.1 <br />678.0 <br />128.54 <br />115.62 <br />Chloride <br />mg /L <br />27.00 <br />132.28 <br />289.27 <br />228.41 <br />212.3 <br />Conductivity <br />umhos /cm <br />532 <br />3810 <br />9670 <br />571 <br />532 <br />Hardness <br />mg /L <br /><MDL <br />1600 <br />3930 <br />263.22 <br />188.76 <br />Nitrate - Nitrite <br />mg /L <br /><MDL <br />6.68 <br />20.70 <br />0.11 <br />0.13 <br />Oil and Grease <br />mg /L <br /><MDL <br />29.191 <br />48.16 <br /><MDL <br /><MDL <br />pH <br />su <br />7.7 <br />8.1 <br />8.5 <br />7.9 <br />7.7 <br />Phosphate <br />mg /L <br /><MDL <br />0.2 <br />0.9 <br /><MDL <br /><MDL <br />ResidueFilterable -TDS <br />mg /L <br />466 <br />3917 <br />10400 <br />489 <br />466 <br />ResidueNonFilterable -TSS <br />mg /L <br /><MDL <br />13806 <br />162160 <br />6 <br />2 <br />SAR <br /><MDLI <br />3.31 <br />11.40 <br />1.96 <br />0.96 <br />Sulfate <br />mg /L <br />6 <br />1880 <br />6620 <br />9.08 <br />6.23 <br />Aluminum (TREC) <br />mg /L <br /><MDL <br />27 <br />148 <br />0.31 <br />0.28 <br />Arsenic (TREC) <br />mg /L <br /><MDL <br />0.219 <br />1.367 <br />0.022 <br />0.020 <br />Cadmium (TREC) <br />mg /L <br /><MDL <br />0.016 <br />0.05 <br />0.002 <br />0.002 <br />Calcium (TREC) <br />mg /L <br />42.5 <br />292 <br />1210 <br />64.251 <br />43.6 <br />Copper (TREC) <br />mg /L <br /><MDLI <br />0.12 <br />0.60 <br />0.04 <br />0.08 <br />Iron (TREC) <br />mg /L <br /><MDL <br />38 <br />149 <br />0.64 <br />0.15 <br />Lead (TREC) <br />mg /L <br /><MDL <br />0.18 <br />1.02 <br />0.002 <br />0.002 <br />Magnesium (TREC) <br />mg /L <br />19.4 <br />271.2 <br />773.0 <br />25.0 <br />19.4 <br />Manganese (TREC) <br />mg /L <br /><MDL <br />0.9 <br />3.8 <br />0.03 <br /><MDL <br />Mercury (TREC) <br />mg /L <br /><MDL <br />0.00025 <br />0.00183 <br />0.000041 <br />0.00004 <br />Molybdenum (TREC) <br />mg /L <br /><MDLI <br />0.010 <br />0.052 <br />0.001 <br />0.001 <br />Selenium (TREC) <br />mg /L <br /><MDL <br />0.069 <br />0.462 <br />0.004 <br />0.002 <br />Sodium (TREC) <br />mg /L <br />66.5 <br />570 <br />1540 <br />68.7 <br />66.5 <br />Zinc (TREC) <br />mg /L <br /><MDL <br />0.68 <br />4.70 <br />0.05 <br />1 <br />1 0.02 <br />The Lower 8 Gulch monitoring point is just above Sediment Pond B. All flows in this Gulch flow into this Sediment Pond. This point <br />exhibited no flows before the construction of the mine. The mine construction and now the mine operation provide flow to this gulch. <br />Baseline Information for B- Gulch -lo is derived from events beginning on 2/28/95 through 3/30/97. <br />Point influenced by mining on 3/30/97. <br />Figure No. 81 <br />Revised 05/15 <br />