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4.0 POST-CLOSURE MAINTENANCE PLAN <br /> 4.1 INTRODUCTION <br /> Post-closure maintenance of the closed Forward Landfill will be performed in <br /> accordance with applicable regulatory standards included in 27 CCR, Chapters 3 <br /> and 4, and 40 CFR Section 258.61. Post-closure maintenance activities for the <br /> Forward Landfill will consist of: <br /> • Final Cover Maintenance <br /> • Drainage System Maintenance <br /> • Vegetative Cover Maintenance <br /> • Leachate Control System Maintenance <br /> • Gas Monitoring and Control Systems Maintenance <br /> • Groundwater Monitoring System Maintenance <br /> • Access Road Maintenance <br /> • Site Security Inspection and Maintenance <br /> • Landfill Settlement Monitoring and Monument Maintenance <br /> The maintenance procedures for each of these activities are described in the <br /> following sections. <br /> 4.2 FINAL COVER MAINTENANCE <br /> The integrity and effectiveness of the final cover will be maintained by making <br /> repairs, if necessary, to correct the effects of settlement, subsidence, erosion, or <br /> damage to the vegetation. Areas that show evidence of damage will be <br /> investigated to ascertain the cause of the damage before repairs are undertaken. If <br /> the damaged areas have caused ponding of surface runoff, soil will be added as <br /> needed and regraded until positive drainage is re-established. If the repaired area <br /> is large enough, it will be revegetated. Inspections of the final cover will be <br /> performed on a quarterly basis. <br /> 4.3 DRAINAGE SYSTEM MAINTENANCE <br /> Post-closure maintenance personnel at the landfill will inspect and maintain the <br /> is drainage system at the landfill on a quarterly basis and after significant storm <br /> Forward Landfill PCPCMP 4-1 <br /> L:\Allied\2000.193\Reports\FinaIPCPCMP:FL-sec4.doc:5/21/02 BRYAN A.STIRRAT s ASSOCIATES <br />