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. 5.2.3 DRAINAGE CONTROL SYSTEM <br /> Costs for the drainage system include the construction of the perimeter <br /> trapezoidal channel, the removal and replacement of inlet structures and <br /> downdrains. „ <br /> 5.2.4 EROSION CONTROL <br /> This category covers the cost of landscaping which includes soil preparation and <br /> planting of vegetative materials. <br /> 5.2.5 LANDFILL GAS CONTRJS�STEM <br /> This category includes the cost of installation of a complete LGGES. It should be <br /> noted the LFGES will most likely be installed in phases as the landfill expands <br /> and/or as regulatorily required. As the landfill expands, it is anticipated that most <br /> of the system will be installed, with the balance of the system completed as part <br /> of closure. However, for closure cost estimating purposes, this closure cost <br /> • assumes installing the entire system as a conservative approach. <br /> 5.2.6 LANDFILL GAS MONITORING SYSTEM <br /> No additional gas monitoring facilities are proposed for the site at closure; <br /> however, costs for placement of up to four additional multiple-depth monitoring <br /> probes (maximum 50 feet deep), as may become necessary to respond to <br /> unforeseen c#l-lditions, are included. <br /> 5.2.7 GROUNDWATER MONITORING SYSTEM <br /> No costs are associated with this category since no additional groundwater <br /> monitoring facilities are proposed for the site at closure. <br /> 5.2.8 SIT ECURITY SIGNAGE <br /> This category includes costs for required fencing and signage at closure. <br /> Forward Landfill PCPCMP 5-2 <br /> L:\Allied\2000.193\Reports\JTD-PCPCMP702Rev:FL-sec5p2:5/21/02 <br /> Revision 1: 7/16/02 <br /> BRYAN A.STIRRAT S.ASSOCIATES <br />