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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2015 Annual Hydrology Report HUB -low <br />Hubbard Creek - Drainage System <br />Elevation - 5880 <br />Initiated 9/30/1996 9/30/1996 9/30/1996 9/30/1996 <br />Activated 6/23/1999 6/23/1999 6/23/1999 6/23/1999 <br />Date 10/26/2016 9/8/2016 6/28/2016 4/18/2016 <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 />CFS <br />2.90 <br />19.67 <br />85.51 <br />0.04 <br />24.01 <br />294.00 <br />4.12 <br />0.19 0.45 <br />FieldComment <br />ph <br />su <br />8.0 <br />8.5 <br />9.3 <br />7.1 <br />8.3 <br />9.0 <br />8.4 <br />8.5 8.5 <br />8.5 <br />Conductivity <br />umhos/cm <br />80 <br />198 <br />390 <br />50 <br />306 <br />850 <br />347 <br />359 470 <br />230 <br />Temperature <br />Celsius <br />2.3 <br />11.1 <br />20.2 <br />0.3 <br />9.8 <br />21.7 <br />7.3 <br />17.4 17.8 <br />4.3 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />62 <br />115 <br />155 <br />28 <br />149 <br />690 <br />173 <br />98.9 <br />Chloride <br />mg/L <br /><MDL <br />1.7 <br />3.0 <br /><MDL <br />32.2 <br />203.6 <br />2.5 <br />1.3 <br />Conductivity <br />umhos/cm <br />118 <br />254 <br />406 <br />92 <br />349 <br />711 <br />295 <br />160 <br />Hardness <br />mg/L <br />49 <br />96 <br />138 <br />31.28 <br />133.85 <br />315.52 <br />125 <br />70.1 <br />Nitrate -Nitrite <br />mg/L <br /><MDL <br />0.05 <br />0.29 <br /><MDL <br />0.17 <br />1.62 <br />0.014 <br />0.017 <br />Oil and Grease <br />mg/L <br /><MDL <br />3.01 <br />3.0 <br /><MDLI <br />3.0 <br />3.0 <br /><MDL <br /><MDL <br />pH <br />su <br />7.5 <br />7.91 <br />8.3 <br />6.9 <br />8.0 <br />8.4 <br />8.3 <br />8.0 <br />Phosphate <br />mg/L <br /><MDL <br />0.004 <br />0.030 <br /><MDL <br />0.04 <br />0.27 <br /><MDL <br />0.083 <br />ResidueFilterable-TDS <br />mg/L <br />100 <br />163 <br />260 <br />60 <br />253 <br />563 <br />192 <br />132 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />33 <br />170 <br /><MDL <br />21 <br />200 <br />9.8 <br />32 <br />SAR <br /><MDL <br />0.47 <br />1.04 <br /><MDL <br />0.93 <br />2.62 <br />0.95 <br />0.40 <br />Sulfate <br />mg/L <br /><MDL <br />17 <br />50 <br /><MDLI <br />36 <br />102 <br />18.2 <br />7.3 <br />Aluminum (TREC) <br />mg/L <br />0.05 <br />0.581 <br />1.91 <br /><MDL <br />0.31 <br />1.18 <br />0.18 <br />1.09 <br />Arsenic (TREC) <br />mg/L <br /><MDL 0.0004 0.0010 <br /><MDL <br />0.0083 <br />0.0600 <br /><MDL <br /><MDL <br />Cadmium (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />0.010 <br />0.040 <br /><MDL <br /><MDL <br />Calcium (TREC) <br />mg/L <br />13.8 <br />26.2 <br />36.7 <br />8.5 <br />33.9 <br />70.7 <br />34.9 <br />1 <br />20.8 <br />Copper (TREC) <br />mg/L <br /><MDL <br />0.001 <br />0.010 <br /><MDL <br />0.008 <br />0.060 <br /><MDL <br /><MDL <br />Iron (TREC) <br />mg/L <br />0.09 <br />0.54 <br />1.44 <br />0.061 <br />0.29 <br />1.28 <br />0.42 <br />1.18 <br />Lead (TREC) <br />mg/L <br /><MDL <br /><MDLI <br /><MDL <br /><MDL <br />0.0146 <br />0.0700 <br /><MDL <br /><MDL <br />Magnesium (TREC) <br />mg/L <br />3.6 <br />7.4 <br />11.2 <br />2.4 <br />12.2 <br />34.6 <br />9.3 <br />5.4 <br />Manganese (TREC) <br />mg/L <br />0.009 <br />0.016 <br />0.034 <br /><MDL <br />0.023 <br />0.080 <br />0.0217 <br />0.0325 <br />Mercury (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />0.00007 0.00018 <br /><MDL <br /><MDL <br />Molyebdenum (TREC) <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />0.006 <br />0.030 <br /><MDL <br /><MDL <br />Selenium (TREC) <br />mg/L <br /><MDL <br />0.001 <br />0.010 <br /><MDL <br />0.00461 <br />0.0200 <br /><MDL <br />I <br /><MDL <br />Sodium (TREC) <br />1 mg/L <br />5.31 <br />115.91 <br />27.61 <br />3.61 <br />27.81 <br />73.0j <br />25.4 <br />1 <br />7.3 <br />Zinc (TREC) <br />I mg/L <br /><MDLI <br />0.011 <br />0.041 <br /><MDLI <br />0.0091 <br />0.037j <br /><MDLI <br />I <br /><MDL <br />Note 1: USGS did not collect flow values. <br />The Lower Hubbard Creek monitoring point is located at a concrete box culvert under the Union Pacific railroad track just above the North <br />Fork of the Gunnison. Flow values are taken from the USGS information for station #09132960. <br />Baseline Information for Point Hub -low is derived from events beginning on 9/30/96 through 6/23/99. <br />Point influenced by mining on 6/23/99. <br />Figure 77 <br />