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6.0 CLOSURE/POST-CLOSURE MAINTENANCE COST ESTIMATE <br /> 6.1 INTRODUCTION <br /> In order to establish the basis for the proper level of funding to close and <br /> provide post-closure maintenance for Stage IA of the Forward Landfill in an <br /> environmentally sound manner, a cost estimate has been prepared reflecting the <br /> proposed closure design and post-closure maintenance procedures presented in <br /> Sections 3 and 4 of this FPCPCMP. The estimate for closure improvements was <br /> combined with an estimate for construction management/quality assurance <br /> services to determine the total closure cost. <br /> 6.2 CLOSURE COST ESTIMATE <br /> The Plan features are grouped into categories for convenience in presenting the <br /> cost estimate. A brief description of the components included in each category <br /> is given below. The total closure cost estimate is shown on Table 6. <br /> 6.2.1 FINAL COVER <br /> Based on the Stage IA final grading plan, the approximate area which will require <br /> placement of final cover is 30 acres. The proposed final cover for Stage IA of <br /> the Forward Landfill will consist of a minimum one-foot thick foundation layer of <br /> select soil, which has been placed as interim cover in the Stage IA partial closure <br /> area, and a three-foot thick layer of select soil that will comprise the upper <br /> monolithic cover layer. This category also includes costs for clearing and <br /> grubbing and settlement/survey monument installation. <br /> 6.2.1.1 FINAL COVER CONSTRUCTION QUALITY ASSURANCE MONITORING AND <br /> TESTING <br /> Costs for construction quality assurance include the final cover placement tests, <br /> inspections and reporting. <br /> Forward Landfill PFCPCMP 6-1 <br /> J:\Allied\Forward\2005.0051 Partial Closure\Partial Closure Plan\FL•sec 6.doc:6/15/2005 <br />