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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2012 Annual Hydrology Report S -4a <br />Terror Creek - Spring 4a <br />Elevation - 7910 <br />Initiated <br />Activated <br />Date <br />11/9/1995 <br />11/9/1995 <br />11/9/1995 <br />11/9/1995 <br />1/15/2001 <br />1 <br />1/15/2001 <br />1/15/2001 <br />1/15/2001 <br />10/10/2012 <br />8/7/2012 <br />6/14/2012 <br />4/11/2012 <br />Summary Information <br />Field <br />Parameters <br />Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow <br />GPM <br />0.30 <br />0.72 <br />1.88 <br />0.00 <br />0.59 <br />1.50 <br />0.23 <br />0.29 <br />0.31 <br />0.27 <br />FieldComment <br />ph <br />su <br />7.2 <br />7.8 <br />8.5 <br />6.3 <br />7.4 <br />8.0 <br />7.5 <br />7.8 <br />7.8 <br />7.7 <br />Conductivity <br />umhos /cm <br />200 <br />239 <br />280 <br />200 <br />260 <br />340 <br />340 <br />300 <br />250 <br />250 <br />Temperature <br />Celsius <br />2.4 <br />7.4 <br />14.2 <br />4.3 <br />6.5 <br />8.7 <br />6.6 <br />7.8 <br />6.7 <br />4.9 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg /L <br />146 <br />146 <br />146 <br />204.9 <br />204.9 <br />204.9 <br />Chloride <br />mg /L <br />2 <br />2 <br />2 <br />47.15 <br />47.15 <br />47.15 <br />Conductivity <br />umhos /cm <br />289 <br />289 <br />289 <br />313 <br />321 <br />330 <br />Hardness <br />mg /L <br />125 <br />125 <br />125 <br />131.95 <br />131.95 <br />131.95 <br />Nitrate - Nitrite <br />mg /L <br />0.16 <br />0.16 <br />0.16 <br />0.31 <br />0.31 <br />0.31 <br />Oil and Grease <br />mg /L <br /><MDL <br /><MDLI <br /><MDL <br /><MDL <br /><MDLI <br /><MDL <br />pH <br />su <br />7.30 <br />7.30 <br />7.30 <br />7.1 <br />7.3 <br />7.5 <br />Phosphate <br />mg /L <br />0.08 <br />0.08 <br />0.08 <br /><MDL <br /><MDL <br /><MDL <br />ResidueFilterable -TDS <br />mg /L <br />200 <br />200 <br />200 <br />196 <br />226 <br />263 <br />ResidueNonFilterable -TSS <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />2 <br />27 <br />48 <br />SAR <br />0.49 <br />0.49 <br />0.49 <br />0.6581 <br />0.658 <br />0.658 <br />Sulfate <br />mg /L <br />13 <br />131 <br />13 <br />14.41 <br />14.41 <br />14.41 <br />Aluminum (TREC) <br />mg /L <br />0.88 <br />0.88 <br />0.88 <br />0.023 <br />0.023 <br />0.023 <br />Arsenic (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.005 <br />0.005 <br />0.005 <br />Cadmium (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.006 <br />0.006 <br />0.006 <br />Calcium (TREC) <br />mg /L <br />43.10 <br />43.10 <br />43.10 <br />44.4 <br />44.4 <br />44.4 <br />Copper (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.0021 <br />0.002 <br />0.002 <br />Iron (TREC) <br />mg /L <br />1.23 <br />1.231 <br />1.23 <br />0.081 <br />0.54 <br />1.24 <br />Lead (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.03 <br />0.03 <br />0.03 <br />Magnesium (TREC) <br />mg /L <br />4.30 <br />4.30 <br />4.30 <br />5.12 <br />5.12 <br />5.12 <br />Manganese (TREC) <br />mg /L <br />0.02 <br />0.02 <br />0.02 <br />0.01 <br />0.02 <br />0.03 <br />Mercury (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.00008 <br />0.00008 <br />0.00008 <br />Molyebdenum (TREC) <br />mg /L <br /><MDL <br /><MDL <br /><MDL <br />0.007 <br />0.007 <br />0.007 <br />Selenium (TREC) <br />mg /L <br /><MDLI <br /><MDLI <br /><MDL <br />0.0081 <br />0.008 <br />0.008 <br />Sodium (TREC) <br />I mg /L <br />12.51 <br />12.51 <br />12.5 <br />17.61 <br />17.6 <br />17.6 <br />Zinc (TREC) <br />I mg /L <br />1 0.031 <br />0.031 <br />0.03 <br />0.0061 <br />0.006 <br />0.006 <br />The monitoring point for S -4a is located along an unmarked road in an un -named gulch leading down from the broad ridge that <br />separates Sheep Corral and Freeman Gulches from Terror Creek. This spring feeds P -4. <br />Baseline Information for Point S -4a is derived from events beginning on 11/9/95 through 1/15/01. <br />Point influenced by mining on 1/15/01. <br />Figure No. 25 <br />