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West Elk Mine 2010 Annual Hydrology Report v <br />• 5.0 ASSESSMENT OF MINE - INDUCED HYDROLOGIC IMPACTS AND <br />ANTICIPATED IMPACTS IN WY 2011 50 <br />5.1 Surface Water 50 <br />5.1.1 Impacts to Area Stream Water Quality 50 <br />5.1.2 Impacts to Area Stream Water Quantity 53 <br />5.1.3 Impacts to the North Fork of the Gunnison River 54 <br />5.1.3.1 Salinity 54 <br />5.2 Springs and Seeps 55 <br />5.2.1 Impacts to Spring and Seep Water Quality 55 <br />5.2.2 Impacts to Spring and Seep Water Quantity 57 <br />5.3 Stock Ponds and USFS Water Resources 58 <br />5.4 Groundwater 59 <br />5.4.1 Impacts to Groundwater Quality 60 <br />5.4.2 Impacts to Groundwater Quantity 61 <br />6.0 ADEQUACY OF THE MONITORING PROGRAM 66 <br />6.1 Mining Related Hydrologic Impacts 66 <br />7.0 SUMMARY 67 <br />8.0 REFERENCES 71 <br />July 2011 HydroGeo, Inc. <br />