COMPLIANCE INFO_JTD 9/3/2025 - Laserfiche WebLink

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Project No. AU25.1274 | PCPCMP Foothill Sanitary Landfill 10 September 2025 the contract signed with the LFG-to-energy developer requires the developer to operate the LFG system, with maintenance by the County. This constitutes a significant cost savings compared to previous cost estimates; however, for the purpose of post -closure cost estimates, it is assumed that the County will operate the LFG collection system (Figure 6) throughout the post-closure period. 3.2.7 Leachate Control System Leachate will continue to be pumped from the leachate sumps and returned to the dryer, upper strata of the landfill. The County anticipates that leachate production will decrease once the landfill is covered with the ET cover. Extraction of leachate from the sumps (with subsequent storage in an onsite tank if needed) will be automatic, and will not require the same level of effort for maintenance as with the LFG control system. County staff will inspect the sumps monthly to assure proper operation of each sump. Likely problems include either failure of the leachate pump or failure of the level sensor/control that cycles the pump in response to rising and falling leachat e levels. The County will make repairs as needed. 3.3 Post-Closure Maintenance Cost Estimate Post-closure costs for FSL have been developed per the regulations provided in CCR Title 27 Section 21815. Post-closure maintenance costs for FSL are estimated to be $2.77 million per year (2025 dollars) (Appendix C, Table C-2). Post-closure financial assurance is provided by a Pledge of Revenue from the Solid Waste Enterprise Fund (see JTD, Appendix I).