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3.4 Landfill Settlement..............................................................................................3-5 <br /> 3.4.1 Settlement Analysis .............................................................................3-5 <br /> 3.4.2 Survey/Settlement Monumentation...................................................3-6 <br /> 3.5 Landfill Slope Stability........................................................................................3-6 <br /> 3.6 Drainage and Erosion Control............................................................................3-8 <br /> 3.6.1 Drainage Control System Design ........................................................3-8 <br /> 3.6.1.1 Hydrology.................................................................................3-8 <br /> 3.6.1.2 Proposed Final Drainage Control System .............................3-8 <br /> 3.6.2 Soil Loss Analysis.................................................................................3-9 <br /> 3.6.3 Erosion Control.....................................................................................3-9 <br /> 3.7 Landfill Gas Control ......................................................................................... 3-10 <br /> 3.8 Landfill Gas Monitoring System...................................................................... 3-11 <br /> 3.9 Groundwater/Surface Water Monitoring System .......................................... 3-11 <br /> 3.10 Site Security ..................................................................................................... 3-11 <br /> 3.11 Structure Removal/Decommissioning of Environmental <br /> ControlSystems............................................................................................... 3-11 <br /> 3.12 Closure Implementation.................................................................................. 3-11 <br /> 3.12.1 Closure Process ................................................................................ 3-11 <br /> 3.12.2 Construction Management............................................................... 3-12 <br /> 3.13 Maximum Extent of Landfill Closure............................................................... 3-12 <br /> 3.14 California Environmental Quality Act Documentation ................................... 3-12 <br /> 4.0 POST-CLOSURE MAINTENANCE PLAN <br /> 4.1 Introduction.........................................................................................................4-1 <br /> 4.2 Final Cover Maintenance....................................................................................4-1 <br /> 4.3 Drainage System Maintenance..........................................................................4-1 <br /> 4.4 Vegetative Cover Maintenance..........................................................................4-2 <br /> 4.5 Bench Maintenance............................................................................................4-2 <br /> 4.6 Landfill Settlement Monitoring and Monument Maintenance.........................4-2 <br /> 4.6.1 Survey Record ......................................................................................4-2 <br /> 4.6.2 Survey Settlement Monuments ..........................................................4-3 <br /> 5.0 POST-CLOSURE EMERGENCY RESPONSE PLAN <br /> 5.1 Purpose and Scope.............................................................................................5-1 <br /> 5.2 Site Safety Officer...............................................................................................5-1 <br /> 5.3 Emergency Response Notification Procedure...................................................5-1 <br /> Forward Landfill Stage 1B Partial Final Closure/Post-Closure Maintenance Plan-June 2011 <br /> SWT Engineering <br /> z:\projects\allied waste\forward\11-1014 partial fnl clsr pin\partial final closure plan document\text\toc.doc <br /> 11 <br />