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Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2016 Annual Hydrology Report <br />Surface Water <br />SW -05 <br />Stevens Gulch - Downstream <br />Elevation - 6600 <br />Initiated <br />Activated <br />Date <br />1/1/1983 1/1/1983 1/1/1983 1/1/1983 <br />1 <br />9/16/2016 6/21/2016 4/12/2016 2/24/2016 <br />Summary Information <br />Field <br />Parameters <br />UNITS <br />Min <br />Baseline <br />Ave <br />Operation <br />Max Min Ave Max <br />Flow <br />CFS <br />0.00 <br />1.61 <br />30.13 <br />1.87500 <br />5.00000 <br />1.87500 <br />Water Level in Flume <br />Feet <br />0.00 <br />0.08 <br />1.06 <br />0 <br />0 <br />Temperature <br />Celsius <br />-0.5 <br />10.2 <br />23.7 <br />19.5 <br />6 <br />19.5 <br />Conductivity <br />umhos/cm <br />0 <br />557 <br />2000 <br />860 <br />202 <br />860 <br />pH <br />su <br />0.0 <br />8.2 <br />9.9 <br />8.7 <br />8.39 <br />8.7 <br />Field Comments <br />Dry <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />66 <br />227 <br />456 <br />364 <br />Chloride <br />mg/L <br /><MDL <br />21.58 <br />223.41 <br />16.1 <br />6.1 <br />Conductivity <br />umhos/cm <br />149 <br />603 <br />1560 <br />800 <br />286 <br />Hardness <br />mg/L <br />35.6 <br />257.8 <br />625.7 <br />380 <br />129 <br />Nitrate -Nitrite <br />mg/L <br /><MDL <br />0.34 <br />0.88 <br />0.29 <br /><MDL <br />Oil and Grease <br />mg/L <br /><MDL <br /><MDL <br /><MDL 11 <br /><MDL <br /><MDL <br />pH <br />su <br />6.8 <br />8.1 <br />8.7 <br />8.45 <br />8.39 <br />Phosphate <br />mg/L <br /><MDL <br />0.20 <br />0.47 <br />0.056 <br />ResidueFilterable-TDS <br />mg/L <br />106 <br />401 <br />1130 <br />555 <br />233 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />35 <br />438 <br />5.1 <br />6.8 <br />SAR <br />0.23 <br />1.06 <br />2.06 <br />1.21 <br />0.826 <br />Sulfate <br />mg/L <br /><MDL <br />101.7 <br />450.0 1 <br />123 <br />23.2 <br />Aluminum (TREC) <br />mg/L <br />0.022 <br />0.278 <br />0.530 <br />0.103 <br />Arsenic (TREC) <br />mg/L <br />0.001 <br />0.020 <br />0.040 <br /><MDL <br />Cadmium (TREC) <br />mg/L <br />0.002 <br />0.007 <br />0.010 <br /><MDL <br />Calcium (TREC) <br />mg/L <br />8.81 <br />53.68 <br />103.00 <br />87.7 <br />Copper (TREC) <br />mg/L <br />0.002 <br />0.008 <br />0.020 <br /><MDL <br />Iron (TREC) <br />mg/L <br />0.03 <br />0.29 <br />0.87 <br />0.177 <br />0.868 <br />Lead (TREC) <br />mg/L <br />0.00 <br />0.02 <br />0.04 <br /><MDL <br />Magnesium (TREC) <br />mg/L <br />7.10 <br />30.12 <br />61.20 <br />39.1 <br />Manganese (TREC) <br />mg/L <br />0.01 <br />0.041 <br />0.13 <br />0.0137 <br />0.0309 <br />Mercury (TREC) <br />mg/L <br />0.00002 0.00011 <br />0.00027 <br /><MDL <br />Molybdenum (TREC) <br />mg/L <br />0.002 <br />0.006 <br />0.015 <br /><MDL <br />Selenium (TREC) <br />mg/L <br /><MDL <br />0.007 <br />0.018 1 <br /><MDL <br />Sodium (TREC) <br />mg/L <br />9.60 <br />36.66 <br />64.00 <br />55.5 <br />Zinc (TREC) <br />mg/L <br />0.005 <br />0.009 <br />0.020 <br /><MDL <br />The area of concern for monitoring point SW -05 has not been affected by the mining operation. Therefore, all recorded <br />monitoring events are considered Baseline. <br />The contractor who conducts the field monitoring only took one sample during 2015. <br />The Stevens Gulch stream gauge, SW -05, is located near Bowie No. 1 mine's timber storage area in the NE114NW1/4, Sec 25, T13S, R92W, <br />of the 6th P.M. A 36" Parshall flume was installed at this locations. <br />Figure 88 <br />