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Bowie Resources, LLC <br />Bowie No. 1 Mine <br />2016 Annual Hydrology Report <br />Field <br />Parameters 1UNITS <br />SM07 <br />Monitoring Well SM -7 <br />Depth - 55' <br />Top of Pipe Elevation - 7800' <br />Pipe 2.5' Above Ground <br />Initiated 8/22/1985 <br />Activated 10/1/1997 <br />Date 6/14/2016 <br />Summary Information <br />Baseline Operation <br />Min Ave Max Min Ave Max <br />Static Water Level <br />Feet <br />18.2 <br />26.2 <br />32.3 <br />0.0 <br />27.1 <br />45.0 <br />21.36 <br />Water Elevation <br />Feet <br />7767.7 7773.8 7781.87755.0 <br />7772.9 7800.0 <br />7778.64 <br />Temperature <br />Celsius <br />6.0 <br />1 <br />9.2 <br />15.8 <br />6.4 <br />8.1 <br />10.3 <br />8.6 <br />Conductivity <br />umhos/cm <br />180 <br />267 <br />510 <br />180 <br />249 <br />580 <br />250 <br />pH <br />su <br />6.8 <br />7.6 <br />8.5 <br />6.8 <br />7.4 <br />7.8 <br />7.4 <br />Field Comments <br />103 <br />139 <br />193 <br /><MDL <br />143 <br />478 <br />Acidity <br />mg/L <br />Lab <br />Parameters <br />UNITS <br />Bicarbonate <br />mg/L <br />102 <br />165 <br />680 <br />64 <br />117 <br />198 <br />Carbonate <br />mg/L <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br /><MDL <br />Chloride <br />mg/L <br />2 <br />5 <br />13 <br /><MDL <br />33.8 <br />199 <br />Conductivity <br />umhos/cm <br />229 <br />280 <br />362 <br />218 <br />296 <br />506 <br />Hardness <br />mg/L <br />103 <br />139 <br />193 <br /><MDL <br />143 <br />478 <br />Acidity <br />mg/L <br />-118 <br />-3 <br />18 <br />pH <br />su <br />6.5 <br />7.2 <br />8.0 <br />6.5 <br />7.2 <br />8.3 <br />ResidueFilterable-TDS <br />mg/L <br />117 <br />164 <br />220 <br />110 <br />207 <br />377 <br />ResidueNonFilterable-TSS mg/L <br />8 <br />257 <br />846 <br /><MDL <br />38 <br />154 <br />SAR <br />0.19 <br />0.24 <br />0.29 <br />0.12 <br />0.51 <br />2.68 <br />Sulfate <br />mg/L <br /><MDL <br />19 <br />78 <br /><MDL <br />11.3 <br />30.0 <br />Calcium (Dissolved) <br />mg/L <br />1.9 <br />40.4 <br />59.0 <br />19.8 <br />38.5 <br />120.3 <br />1 <br />Iron (Dissolved) <br />mg/L <br /><MDL <br />0.08 <br />0.35 <br />Iron (Total) <br />mg/L <br />0.02 <br />0.23 <br />0.77 <br />Magnesium (Dissolved) <br />mg/L <br />6.0 <br />7.9 <br />11.0 <br />5.5 <br />11.2 <br />78.8 <br />Manganese (Total) <br />mg/L <br /><MDL <br />0.019 <br />0.060 <br />Sodium (Dissolved) <br />mg/L <br />6.0 <br />6.8 <br />8.3 <br />6.2 <br />15.1 <br />105.8 <br />TDS Ratio (ciray./calc.) <br />% <br />0.95 <br />1.07 <br />1.19 <br />0.85 <br />1.06 <br />1.58 1 <br />Shallow monitoring wells SM -1 through SM -11 were constructed in 1985 in order to gather additional infon <br />on alluvial/colluvial deposits within the permit boundary. They are depicted on Map 4-1. <br />Baseline Information for Point SM07 is derived from events beginning on 8/22/85 through 10/1/97. <br />Point influenced by mining on 10/1/97. <br />Ground Water <br />Figure No. 18 <br />