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• <br />C] <br />Bowie Resources, LLC <br />Bowie No. 2 Mine <br />2009 Annual Hydrology Report <br />B- Gulch -lo <br />Drainage System <br />Elevation - 5960 <br />Surface Water <br />The Lower B Gulch monitoring point is just above Sediment Pond B. All flows in this Gulch flow into this Sediment Pond. This point <br />exhibited no flows before the construction of the mine. The mine construction and now the mine operation provide flow to this gulch. <br />• <br />Baseline Information for B- Gulch -lo is derived from events beginning on 2/28/95 through 3130/97. <br />Point influenced by mining on 3/30/97. <br />Figure No. 85 <br />Initiated <br />2/28/1995 2/28/1995 2/28/1995 <br />2/28/1995 <br />Activated <br />3/30/1997 3/30/1997 3/30/1997 <br />3/30/1997 <br />Date <br />11/24/2009 9/29/2009 6/1512009 <br />3/5/2009 <br />Summary Information <br />e� U 01 <br />Baseline Operation <br />Wafk@ :; <br />UNITS <br />Min Ave Max Min Ave <br />Max <br />Flow <br />GPM <br />0 0 0 0.00 1.10 <br />13.13 <br />0 0 0 <br />0.83 <br />FieldComment <br />Trickle only Trickle only No Flow <br />h <br />su <br />6.5 7.9 <br />8.8 <br />7.5 <br />Conductivity <br />umhos /cm <br />730 4556 <br />9800 <br />4400 <br />Temperature <br />Celsius <br />0.5 11.9 <br />24.6 <br />8.4 <br />�w <br />T'�z "rttetes r: UNITS <br />Bicarbonate <br />mg /L <br />174 427 <br />678 <br />Chloride <br />mg /L <br />27 90 <br />225 <br />Conductivity <br />umhos /cm <br />1030 5521 <br />9670 <br />Hardness <br />mg /L <br /><MDL 1948 <br />3930 <br />Nitrate - Nitrite <br />mg /L <br /><MDL 10.91 <br />20.70 <br />Oil and Grease <br />mg /L <br /><MDL 29.19 <br />48.16 <br />pH <br />su <br />8.0 8.3 <br />8.5 <br />Phosphate <br /><MDL 0.2 <br />0.9 <br />ResidueFilterable TDS <br />630 5666 <br />10400 <br />ResidueNonFilterable -TSS <br /><MDL 4586 <br />34500 <br />SAR <br /><MDL 3.46 <br />11.40 <br />Sulfate <br />270 2977 <br />6620 <br />Aluminum <br />1mg/L <br /><MDL 27 <br />148 <br />Arsenic <br /><MDL 0.100 <br />0.476 <br />Cadmium <br /><MDL 0.010 <br />0.04 <br />Calcium <br />98 286 <br />854 <br />Copper <br /><MDL 0.1 <br />0.6 <br />Iron (Total) <br /><MDL 29 <br />149 <br />Lead <br />mg /L <br /><MDL 0.11 <br />0.48 <br />Magnesium <br />mg /L <br />27.2 400.7 <br />773.0 <br />Manganese (Total) <br />mg /L <br /><MDL 0.5 <br />3.8 <br />Mercury <br />mg /L <br /><MDL 0.00009 0.00031 <br />Molyebdenum <br />mg /L <br /><MDL 0.001 <br />0.01 <br />Selenium <br />mg /L <br /><MDL 0.123 <br />0.462 <br />Sodium <br />mg /L <br />1 1421 8541 <br />1540 <br />Zinc <br />jmg1L <br />I I <MDLI 0.411 <br />1.70 <br />The Lower B Gulch monitoring point is just above Sediment Pond B. All flows in this Gulch flow into this Sediment Pond. This point <br />exhibited no flows before the construction of the mine. The mine construction and now the mine operation provide flow to this gulch. <br />• <br />Baseline Information for B- Gulch -lo is derived from events beginning on 2/28/95 through 3130/97. <br />Point influenced by mining on 3/30/97. <br />Figure No. 85 <br />