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Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2016 Annual Hydrology Report <br />Surface Water <br />S21 <br />Terror Creek - Spring 21 <br />Elevation - 7100 <br />Initiated <br />Activated <br />Date <br />4/15/1983 <br />4/15/1983 <br />4/15/1983 <br />4/15/1983 <br />112/11/20110 12/1/2010 112/11/2010 <br />1 <br />12/11/20110 <br />11/8/2016 9/12/2016 6/24/2016 <br />5/23/2016 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Max <br />Min <br />Operation <br />Ave <br />Max <br />Flow <br />GPM <br />0 1.03 <br />7.5 <br />0 <br />0.42 <br />2.5 <br />1.9 0 1.5 2.5 <br />Temperature <br />Celsius <br />2.5 12.1 <br />20.2 <br />8.4 <br />11.90 <br />16.2 <br />10.0 15.1 9.8 <br />Conductivity <br />umhos/cm <br />360 687 <br />907 <br />1040 <br />1 <br />1224.80 <br />1404 <br />1404 1240 1040 <br />pH <br />su <br />7.2 7.9 <br />8.5 <br />7.65 <br />9.99 <br />17.1 <br />7.7 8.3 8.3 <br />Field Comments <br />0 <br />#DIV/0! <br />0 <br />Damp area Damp area Damp area <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />268 388.56 <br />456 <br />93.08 <br />93.08 <br />93.08 <br />Carbonate <br />mg/L <br /><MDL 0.23 <br />3.5 <br />Chloride <br />mg/L <br />2 8.78 <br />14 <br />21.8 <br />21.80 <br />21.8 <br />Conductivity <br />umhos/cm <br />555 679.72 <br />775 <br />434 <br />434.00 <br />434 <br />Hardness <br />mg/L <br />279 350.00 <br />442 <br />347.625 <br />347.63 <br />347.625 <br />Nitrate -Nitrite <br />mg/L <br />0.11 <br />0.10 <br />0.1 <br />Oil/Grease <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />pH <br />su <br />7 7.88 <br />8.4 <br />7.76 <br />7.76 <br />7.76 <br />ResidueFilterable-TDS <br />mg/L <br />330 408.44 <br />535 <br />340 <br />340.00 <br />340 <br />ResidueNonFilterable-TSS mg/L <br />2 24.92 <br />106 <br />17 <br />17.00 <br />17 <br />SAR <br />0.48 0.65 <br />1 <br />2.259 <br />2.259 <br />2.259 <br />Sulfate <br />mg/L <br />30 50.22 <br />91 <br />103.72 <br />103.72 <br />103.72 <br />Calcium (Dissolved) <br />mg/L <br />58 84.47 <br />108 <br />Magnesium (Total) <br />mg/L <br />25 33.81 <br />42 <br />52.4 <br />52.40 <br />52.4 <br />Sodium (Dissolved) <br />mg/L <br />22 27.92 <br />44 <br />Potassium <br />mg/L <br />2 2.00 <br />2 <br />TDS Ratio (gray./calc.) <br />1 1.001 <br />1 <br />Aluminum, TREC <br />mg/L <br />0.2 <br />0.20 <br />0.2 <br />Arsenic, TREC <br />mg/L <br />0.001 <br />0.00 <br />0.001 <br />Cadmium, TREC <br />mg/L <br />0.002 <br />0.00 <br />0.002 <br />Calcium, TREC <br />mg/L <br />52.8 <br />52.80 <br />52.8 <br />Copper, TREC <br />mg/L <br />0.01 <br />0.01 <br />0.01 <br />Iron, TREC <br />mg/L <br />0.271 <br />0.27 <br />0.27 <br />Lead, TREC <br />mg/L <br />0.06 <br />0.06 <br />0.06 <br />Manganese, TREC <br />mg/L <br />0.06 <br />0.06 <br />0.06 <br />Mercury, TREC <br />mg/L <br />3.000E-05 3.000E-05 3.000E-05 <br />Molybdenum, TREC <br />mg/L <br />0.001 <br />0.00 <br />0.001 <br />Selenium, TREC <br />mg/L <br />0.007 <br />0.01 <br />0.007 <br />Sodium, TREC <br />mg/L <br />96.81 <br />96.80 <br />96.8 <br />Zinc, TREC <br />mg/L <br />1 0-011 <br />0.01 <br />0.01 <br />Baseline Information for Point S21 is derived from events beginning on 4/15/83 through 12/1/10. <br />Point influenced by mining on 12/1/10. <br />Figure 47 <br />