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Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2016 Annual Hydrology Report <br />Steph-low <br />Stevens Draw - Drainage System <br />Elevation - 7000' <br />Summary Information <br />Surface Water <br />Initiated 9/27/1995 9/27/1995 9/27/1995 9/27/1995 <br />Activated <br />Date 1 10/28/2016 9/12/2016 6/21/2016 5/31/2016 <br />Field <br />Parameters <br />UNITS <br />Baseline <br />Min Ave <br />Operation <br />Max Min Ave Max <br />Flow <br />GPM <br />0.00 <br />0.20 <br />1.58 0 0 0 0 <br />FieldComment <br />Dry Dry No Flow No Flow <br />ph <br />su <br />7.9 <br />8.2 <br />8.4 <br />1 1 <br />Conductivity <br />umhos/cm <br />1020 <br />1139 <br />1310 <br />Temperature <br />Celsius <br />3.8 <br />10.8 <br />17.2 <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />452 <br />495 <br />554 <br />Chloride <br />mg/L <br />14 <br />16 <br />20 <br />Conductivity <br />umhos/cm <br />1020 <br />1093 <br />1180 <br />Hardness <br />mg/L <br />343 <br />382 <br />433 <br />Nitrate -Nitrite <br />mg/L <br />0.02 <br />0.20 <br />0.97 <br />Oil and Grease <br />mg/L <br /><MDL <br />11 <br />4 <br />pH <br />su <br />8.0 <br />8.2 <br />8.3 <br />Phosphate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />ResidueFilterable-TDS <br />mg/L <br />660 <br />718 <br />780 <br />ResidueNonFilterable-TSS mg/L <br /><MDL <br />21 <br />58 <br />SAR <br /><MDL <br />2.28 <br />3.22 <br />Sulfate <br />mg/L <br />150 <br />170 <br />190 <br />Aluminum <br />mg/L <br />0.05 <br />0.53 <br />1.71 <br />Arsenic <br />mg/L <br /><MDL <br />0.001 <br />0.002 <br />Cadmium <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />Calcium <br />mg/L <br />49.4 <br />59.6 <br />72.4 <br />Copper <br />mg/L <br /><MDL <br />0.0021 <br />0.010 <br />Iron (Total) <br />mg/L <br />0.27 <br />0.82 <br />2.57 <br />Lead <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />Magnesium <br />mg/L <br />41.3 <br />55.9 <br />66.2 <br />Manganese (Total) <br />mg/L <br />0.070 <br />0.211 <br />0.566 <br />Mercury <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br />Molyebdenum <br />mg/L <br /><MDL <br /><MDLl <br /><MDL <br />Selenium <br />mg/L <br /><MDL 0.0002 <br />0.001 <br />Sodium <br />mg/L <br />99.8 <br />120.0 <br />152.0 11 <br />Zinc <br />mg/L <br /><MDL <br />0.01 <br />0.03 <br />The area of concern for monitoring point Steph-low has not been affected by the mining operation. Therefore, all recorded <br />monitoring events are considered Baseline. <br />The monitoring point location for Lower Stevens Draw is located in Stevens Draw, just below Pond 1 and Spring 14. It is accessed by a <br />southern fork of the Stevens Draw road. <br />Baseline Information Collection initiated on 9/27/95 and not yet considered complete. <br />Point Steph-low has not been influenced by mining. <br />Figure 83 <br />