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CONTENTS <br /> is <br /> IFINAL CLOSURE PLAN ................................................................................................... 1 <br /> 1.0 INTRODUCTION............................................................................................................... 1 <br /> 2.0 BACKGROUND ................................................................................................................ 1 <br /> 2.1 GENERAL ............................................................................................................. 1 <br /> 2.2 REASON FOR THE CLOSURE CAP EXTENSION ...............................................2 <br /> 2.3 SHELL OIL EASEMENT........................................................................................2 <br /> 3.0 CURRENT MONITORING AND CONTROL SYSTEMS .................................................... 3 <br /> 3.1 GROUND WATER.................................................................................................3 <br /> 3.1.A Shallow Aquifer Monitoring (Four Wells) .................................................... 3 <br /> 3.1.B Deep Aquifer Monitoring (Two Wells)......................................................... 3 <br /> 3.2 SECURITY ................................................................................ .......................3 <br /> 3.3 DUST..................................................................................................................... 3 <br /> 3.4 LITTER.................................................................................................................. 3 <br /> 3.5 FIRES....................................................................................................................4 <br /> 3.6 LANDFILL GAS ........................................................................................... . . .....4 <br /> 3.6.A Landfill Gas migration monitoring...............................................................4 <br /> 3.6.13 Landfill Gas collection ................................................................................4 <br /> 4.0 CLOSURE CAP EXTENSION IMPLEMENTATION SCHEDULE.............. ...................--,.. 5 <br /> 5.0 STRUCTURE REMOVAL.................................................................................................. 5 <br /> 6.0 DECOMMISSIONING OF ENVIRONMENTAL CONTROLS..............................................5 <br /> 7.0 SITE SECURITY............................................................................................................... 5 <br /> 8.0 FINAL COVER..................................................................................................................6 <br /> 8.1 AREA OF CLOSURE CAP EXTENSION...............................................................6 <br /> 8.2 FOUNDATION LAYER ..........................................................................................6 <br /> 8.3 LOW-HYDRAULIC CONDUCTIVITY LAYER......................................................... 7 <br /> 8.4 EROSION-RESISTANCE (VEGETATIVE) LAYER................................................ 7 <br /> 9.0 FINAL GADING.................................................................................... .......................... 7 <br /> 10.0 FINAL SITE FACE ............................................................................................................ 7 <br /> 11.0 INSTALLATION OF DRAINAGE CONTROL..................................................................... 7 <br /> 12.0 SLOPE PROTECTION AND EROSION CONTROL..........................................................8 <br /> 13.0 IMPLEMENTATION OF LEACHATE CONTROL MEASURES.......................................... 8 <br /> 14.0 INSTALLATION OF GROUNDWATER MONITORING NETWORK ..................................8 <br /> 15.0 INSTALLATION OF GAS MONITORING NETWORK .......................................................8 <br /> 16.0 INSTALLATION OF ADDITIONAL LANDFILL GAS COLLECTION WELLS ......................8 <br /> II FINAL CLOSURE COST ESTIMATES..............................................................................8 <br /> 1.0 FINAL COVER...................................... . .....................................................................8 <br /> 16.1 FOUNDATION SOIL LAYER PREPARATION.......................................................9 <br /> 16.2 GCL BARRIER ......................................................................................................9 <br /> 16.3 VEGETATIVE LAYER ...........................................................................................9 <br /> 2.0 CONSTRUCTION QUALITY ASSURANCE ......................................................................9 <br /> 3.0 REVEGETATION ..............................................................................................................9 <br /> 4.0 LANDFILL GAS MONITORING AND CONTROL ..............................................................9 <br /> 5.0 LEACHATE CONTROL MEASURES .............................................................................. 10 <br /> 6.0 GROUNDWATER MONITORING SYSTEM.................................................................... 10 <br /> 7.0 DRAINAGE SYSTEM...................................................................................................... 10 <br /> 8.0 ADDING AND REMOVING SECURITY SYSTEMS......................................................... 10 <br /> 9.0 STRUCTURE REMOVAL................................................................................................ 10 <br /> 10.0 DISMANTLING ENVIRONMENTAL CONTROLS............................................................ 10 <br /> 11.0 CLOSURE COST SUMMARY......................................................................................... 10 <br /> Closure Plan Revised Addendum San Joaquin County <br /> October 6,2011 Department of Public Works <br /> Corral Hollow Sanitary Landfill Solid Waste Division <br />