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1.8.3 Drainage Control System <br /> Costs for the drainage control system include the construction of the, the removal <br /> and replacement of inlet structures, and downdrains over a 217.8-acre area. <br /> Construction of the permanent drainage control system will occur during active <br /> operations as the landfill is developed. <br /> 1.8.4 Landscaping and Erosion Control <br /> This category covers the cost of landscaping construction which includes soil <br /> preparation and planting of vegetative materials. <br /> 1.8.5 Gas Control System <br /> This category includes the cost of extension of the wells through the cover and <br /> lateral piping system modification during placement of the final cover system. <br /> 1.8.6 Site Security <br /> This category includes costs for required signage at closure of Stage VI or any <br /> lesser portion of the site. The site is currently enclosed with a perimeter fence and <br /> gates or has topographic constraints to prevent unauthorized access to the site <br /> property. <br /> 1.8.7 Demolition <br /> This category generally includes costs for dismantling and removal of on-site <br /> structures (i.e., fee booths and landfill scales). <br /> 1.8.8 Gas Migration Monitoring System <br /> This category includes the cost to replace 25 percent of the gas migration <br /> monitoring probes during the final stage of closure (Stage VIII) or any lesser <br /> portion of the site. <br /> 1.8.9 Groundwater Monitoring System <br /> No costs are associated with this category since additional groundwater <br /> monitoring facilities are not proposed for the site at closure. <br /> 1.8.10 Engineering Design <br /> This category includes costs for the preparation of construction level engineering <br /> design plans and specifications for bid purposes. This cost is assumed to be 2 <br /> percent of the construction cost. <br /> 9 <br /> Forward Landfill-PCPCMPR <br /> (L:\Allied\2003.003 Western Region\FORWARD\PCPCMPR\FinalCPR.doc) <br />