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• <br />• <br />West Elk Mine 2007 Annual Hydrology Report <br />3.2.6 New Spring Monitoring Sites Added in WY 2007 ................................. 25 <br />3.2.6.1 96-2-2 Area Spring .................................................................... 25 <br />3.2.6.2 Deep Creek Spring 2 .................................................................. 25 <br />3.2.6.3 Deep Creek Trail Spring ............................................................ 26 <br />3.3 Ground Water Monitoring ................................................................................... 26 <br />3.4 Underdrain and Mine Water Monitoring ............................................................. 29 <br />3.5 U.S. Forest Service Water Resources .................................................................. 29 <br />3.6 Surface and Ground Water Monitoring Methodology ......................................... 31 <br />4.0 MINE WATER MANAGEMENT ACTIVITIES ................................................................... 32 <br />4.1 Mine Water Balance ............................................................................................ 32 <br />4.2 North Fork Water Rights ..................................................................................... 34 <br />4.3 Sanitary Wastewater ............................................................................................ 34 <br />4.4 Sedimentation Ponds ........................................................................................... 38 <br /> 4.4.1 Ponds MB-1 and MB-2R ........................................................................ 39 <br /> 4.4.2 Ponds MB-3, MB-4, and MB-5 .............................................................. 39 <br /> 4.4.3 Pond FW-1 .............................................................................................. 39 <br /> 4.4.4 RPE Pond ................................................................................................ 39 <br /> 4.4.5 Pond SG-1 .............................................................................................. 39 <br />4.5 Mine Water Inflows ............................................................................................. 40 <br /> 4.5.1 NW Panels Sealed Sump ........................................................................ 40 <br /> 4.5.2 NE Panels Sealed Sump ......................................................................... 40 <br />4.6 Mine Water Sampling .......................................................................................... 40 <br />4.7 Biomonitoring Testing for Toxicity ..................................................................... 40 <br />5.0 ASSESSMENT OF MINE-INDUCED HYDROLOGIC IMPACTS AND ANTICIPATED <br />IMPACTS IN WY 2007 .......................................................................................................... 41 <br />iii <br />5.1 Surface Water ...................................................................................................... 41 <br />5.1.1 Impacts to Area Stream Water Quantity and Quality ............................. 41 <br />5.1.2 Impacts to the North Fork of the Gunnison River .................................. 41 <br />5.2 Springs and Seeps ................................................................................................ 43 <br />5.2.1 Impacts to Water Quantity and Quality .................................................. 43 <br />• <br />June 2008 <br />HydroGeo, Inc.