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during active operations as required under 27 CCR, Sections 20921 through 20939. q f^cIudes the e-ast to--repla^e 25 nevem+ of the gas migration mnniteri ri rT pFebes dulcing final stage of Fe (Stage Vill t-f��>,,,�,��te�-�-Qr-Eloeu,z-rQt�g�-�)-eF-a- lesser pertien of thewe: 1.8.9 Groundwater Monitoring System No costs are associated with this category since additional groundwater monitoring facilities are not proposed for the site at closure. 1.8.10 Engineering Design This category includes costs for the preparation of construction level engineering design plans and specifications for bid purposes. This cost is assumed to be 215 percent of the construction cost. 1.8.11 Construction Management The construction management cost for the FL is based on the closure construction period. This cost is assumed to be 4 percent of the construction cost. 1.8.12 Partial Final Closure and Post-Closure Maintenance Plan Preparation This category covers the cost to prepare a Partial Final Closure Plan for the Stage VIII Closure area. 1.8.13 Contingency A 20 percent contingency factor has been added to the construction cost estimate. 1.9 Post-Closure Maintenance Cost Estimate The post-closure maintenance cost estimate previously prepared is not affected by the proposed changes included in this-42SRGAAPIR mendment. The post-closure cost estimate is presented in Amendment No. 4 of the 2002 PCPCMP and reflects 2008 costs. The operator will initiate post-closure maintenance activities as the staged closure of the FL is implemented. The operator's understanding is that a minimum of the last thirty (30) years of post-closure maintenance must be funded. Therefore, the ongoing post-closure obligation under state law will continue for a minimum of 30 years after the Stage VIII closure area is completed. 1.10 Demonstration of Financial Assurance Closure and Post-Closure Maintenance Fund In accordance with 27 CCR, Chapter 6 and 40 CFR, Subpart G, an operator must demonstrate financial assurance for the proper closure, post-closure maintenance and corrective action for reasonably foreseeable releases at a landfill. An Insurance 10 Forward Landfill-PCPCMP Amendment (Z:\PROJECTS\Allied Waste\1N81013 5 yr Review Plan\PCPCMP Amend 3 July 08\FinaICPRRevl.doc; Amendment No.3:713120 )