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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2016 Annual Hydrology Report Free -low <br />Freeman Gulch - Drainage System <br />Elevation - 7560 <br />Initiated 6/12/1995 6/12/1995 6/12/1995 6/12/1995 <br />Activated 6/23/1999 6/23/1999 6/23/1999 6/23/1999 <br />Date 1 10/24/2016 9/8/2016 6/24/2016 3/22/2016 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Max <br />Operation <br />Min Ave <br />Max <br />Flow <br />GPM <br />0.00 <br />0.24 <br />3.75 <br />0.00 <br />0.35 <br />7.50 <br />0 0 0 2.81 <br />FieldComment <br />Dry Dry No Flow <br />ph <br />su <br />8.3 <br />8.5 <br />8.6 <br />7.3 <br />8.2 <br />8.6 <br />8.4 <br />Conductivity <br />umhos/cm <br />1240 <br />1250 <br />1260 <br />90 <br />1303 <br />2100 <br />1240 <br />Temperature <br />Celsius <br />18.4 <br />19.8 <br />21.2 <br />0.6 <br />12.3 <br />23.0 <br />5.2 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />594 <br />604 <br />614 <br />238.6 <br />342.4 <br />543.9 <br />Chloride <br />mg/L <br />16 <br />18 <br />19 <br />3.06 <br />8.13 <br />11.41 <br />Conductivity <br />umhos/cm <br />1170 <br />1190 <br />1210 <br />1321 <br />1754 <br />2470 <br />Hardness <br />mg/L <br />404 <br />430 <br />456 <br />308.0 <br />404.7 <br />578.9 <br />Nitrate -Nitrite <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />0.48 <br />0.48 <br />0.48 <br />Oil and Grease <br />mg/L <br /><MDL <br /><MDLl <br /><MDL <br /><MDLl <br /><MDL <br /><MDL <br />pH <br />su <br />8.3 <br />8.3 <br />8.4 <br />7.6 <br />7.7 <br />7.8 <br />Phosphate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />ResidueFilterable-TDS <br />mg/L <br />730 <br />765 <br />800 <br />1056 <br />1263 <br />1590 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />3 <br />6 <br />6 <br />36 <br />90 <br />SAR <br />2.48 <br />2.63 <br />2.78 <br />2.91 <br />4.45 <br />5.30 <br />Sulfate <br />mg/L <br />130 <br />130 <br />130 <br />316.9 <br />382.41 <br />507.5 <br />Aluminum (TREC) <br />mg/L <br />0.13 <br />0.21 <br />0.29 <br /><MDL <br />0.40 <br />0.61 <br />Arsenic (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />0.002 <br />0.005 <br />0.006 <br />Cadmium (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />0.002 <br />0.005 <br />0.010 <br />Calcium (TREC) <br />mg/L <br />56.4 <br />61.2 <br />65.9 <br />50.80 <br />66.93 <br />98.40 <br />Copper (TREC) <br />mg/L <br /><MDL <br />0.0051 <br />0.01 <br />0.011 <br />0.02 <br />0.02 <br />Iron (TREC) <br />mg/L <br />0.11 <br />0.15 <br />0.19 <br />0.06 <br />0.08 <br />0.10 <br />Lead (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />0.02 <br />0.03 <br />0.03 <br />Magnesium (TREC) <br />mg/L <br />64.1 <br />67.5 <br />70.8 <br />44.0 <br />57.7 <br />80.9 <br />Manganese (TREC) <br />mg/L <br />0.010 <br />0.013 <br />0.016 <br />0.00 <br />0.03 <br />0.06 <br />Mercury (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />0.00001 <br />0.00006 0.00008 <br />Molyebdenum (TREC) <br />mg/L <br /><MDL <br /><MDLl <br /><MDL <br /><MDL <br />0.003 <br />0.005 <br />Selenium (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />0.016 <br />0.018 <br />Sodium (TREC) <br />mg/L <br />120 <br />124 <br />127 <br />163.0 <br />199.3 <br />223.5 <br />Zinc (TREC) <br />mg/L <br /><MDL <br />0.01 <br />0.03 <br /><MDL <br />0.03 <br />0.06 <br />Baseline Information for Point Free -low is derived from events beginning 6/12/95 through 6/23/99. <br />Point influenced by mining on 6/23/99. <br />Figure 74 <br />