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Table of contents - continued <br />• <br />Subject <br />Page(s) <br />Volume <br />4.8 <br />Hydrologic Impacts <br />4 -172 <br />IV <br />4.8.1 <br />Surface Water <br />4 -172 <br />IV <br />4.8.1.1 <br />Use of Surface Water <br />4 -172 <br />IV <br />4.8.1.2 <br />Surface Drainage During Mining <br />4 -173 - 4 -182 <br />IV <br />4.8.1.3 <br />Post Mine Drainages Stabilization <br />4 -183 - 4 -183b <br />IV <br />4.8.1.4 <br />Sediment Ponds (Embankments, Spillways, Inspections <br />4 -184 - 4 -204 <br />IV <br />and Sediment Removal, Sediment Pond Removal, <br />Permanent Retention of Sediment Ponds.) <br />4.8.1.5 <br />Operational Surface Water Quality <br />4 -205 - 4 -222 <br />IV <br />4.8.1.5a <br />Operational Surface Water Quality, 1981 -1986 <br />4 -222a- 4 -223 <br />IV <br />(see permit volumes 17 -21 for data through 1991) <br />4.8.1.6 <br />Not Assigned <br />4 -223 <br />IV <br />4.8.1.7 <br />Dozer Basins <br />4 -223 <br />IV <br />4.8.2 <br />Impacts and Restoration of Ground Water <br />4 -223 <br />IV <br />4.8.2.1 <br />Use and Potential Uses of Ground Water in the <br />4 -223 - 4-224 <br />IV <br />• <br />Trapper Mine Area <br />4.8.2.2 <br />Ground Water Inflow to the Mine <br />4 -224 - 4 -226b <br />IV <br />4.8.2.2a <br />Ground Water Inflow, 2003 -2007 <br />4 -226c- 4 -226d <br />IV <br />4.8.2.2b <br />Operational Ground Water Levels, 1981 -1986 <br />4 -226g- 4 -226gg <br />IV <br />4.8.2.2c <br />Operational Ground Water Flows, 1981 -1986 <br />4 -226hh - 4 -226ii <br />IV <br />4 -8.2.3 <br />Aquifer Restoration <br />4 -227 - 4 -227a <br />IV <br />4.8.2.4 <br />Operational Ground Water Quality <br />4 -227b- 4 -233 <br />IV <br />4.8.2.4a <br />Operational Ground Water Quality, 1981 -1986 <br />4 -233a- 4- 233ggg <br />IV <br />(see permit volumes 17 -29 for data through 1999) <br />4.8.3 <br />Probable Hydrologic Consequences <br />4 -234 <br />IV <br />4.8.3.1 <br />Surface Water Impacts <br />4 -234 - 4 -235 <br />IV <br />4.8.3.2 <br />Groundwater Impacts <br />4 -236 - 4 -238j <br />IV <br />4.8.3.3 <br />Post Mine Hydrologic Balance <br />4 -238j <br />4.8.4 <br />Impacts to Potential Alluvial Valley Systems <br />4 -238j- 4 -238k <br />IV <br />4.8.5 <br />Operational and Postmine Monitoring <br />4 -239 <br />IV <br />• <br />4.8.5.1 <br />Surface Water Monitoring <br />4 -239 - 4 -241 a <br />IV <br />8/10 <br />i -13 <br />0ev'ision <br />a -- 5 <br />Approved. <br />