ARCHIVED REPORTS_2010_2 - Laserfiche WebLink

Home Browse Search

U 3.0 Postclosure Maintenance Plan 3.1 Postclosure Planned Uses of the Property Section 21825(b)(1) requires a description of the planned uses of the property during the postclosure maintenance period in accordance with Section 21190. Section 21190(b) allows use as nonirrigated open space without submittal to regulatory agencies for approval. Section 21769(c)(2)(H) also allows use as nonirrigated open space without submittal of maps, development features, water balance, and monitoring schemes to detect penetration by precipitation or applied irrigation water. The NCRCSL will be utilized as a nonirrigated open area in the postclosure period. As noted in Section 2.7, the closed landfill area will include landfill facilities, and may include placement of an LFG flare and/or an electrical generation facility on the top deck of Module 1. Once final grades are achieved, the final cover system will be constructed and grass will be planted for long-term erosion control. The vegetated final cover system and the site will be monitored, inspected, and maintained per the approved Final Closure and Postclosure Maintenance Plan. The postclosure maintenance of final cover vegetation is addressed in Section 3.3 of this Postclosure Maintenance Plan. 3.2 Monitoring and Control Systems Section 21825(b)(2) requires a preliminary description of the methods, procedures, and processes that will be used to monitor the landfill during the postclosure period in compliance with Section 21180. The current monitoring and control systems for the landfill include the LFG monitoring and control system; groundwater, surface water, and unsaturated zone monitoring systems; and the leachate monitoring and control system described in Section 2.5. LFG migration monitoring and control includes the perimeter probe system described in Section 2.5.6. It is assumed that the postclosure migration system will be similar to the current program, which requires quarterly monitoring. LFG emission monitoring and control will continue during the postclosure maintenance period. LFG is presently controlled by its collection from LFG wells, and treatment by flaring. LFG condensate is handled as leachate per the WDRs. A portion of the system will be reconstructed at closure and an electrical generation facility may be installed to utilize the LFG. This postclosure emission and monitoring system will include operation, maintenance, and monitoring activities to ensure compliance with applicable San Joaquin Valley Air Pollution Control District requirements, including surface emissions monitoring. PCMP for NCRCSL 3-1 Department of Public WorksiSolid Waste 0:ISan Joaquin CountyINCRCS0I180401PCPMPIFinal ReportlPCPMP_Rev_Jan_2010.Doc County of San Joaquin - January 7, 2010