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4.0 POST-CLOSURE MAINTENANCE PLAN <br /> 4.1 INTRODUCTION <br /> Post-closure maintenance of the Forward Landfill Stage IA partial closure area <br /> will be performed in accordance with applicable regulatory standards included in <br /> 27 CCR, Chapters 3 and 4, and 40 CFR Section 258.61. Post-closure <br /> maintenance activities for the Stage IA partial closure area of the Forward <br /> Landfill will consist of: <br /> • Final Cover Maintenance <br /> • Drainage System Maintenance <br /> • Vegetative Cover Maintenance <br /> • French Drain Leachate Seep Collector Maintenance <br /> • Bench Maintenance <br /> • Landfill Settlement Monitoring and Monument Maintenance <br /> The maintenance procedures for each of these activities are described in the <br /> following sections. Please note that landfill gas monitoring and control system <br /> maintenance, groundwater monitoring, and site security for those facilities in the <br /> Stage IA partial closure area will be performed/maintained as part of ongoing <br /> landfill operations. <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 /> Forward Landfill PFCPCMP 4-1 <br /> J:\Allied\Forward\2005.0051 Partial Closure\Partial Closure Plan\FL-sec4.doc:6/9/2005 <br />