COMPLIANCE INFO_JTD 9/3/2025 - Laserfiche WebLink

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Project No. AU25.1274 | PCPCMP Foothill Sanitary Landfill 9 September 2025 3.2.1 General Maintenance and Inspection San Joaquin County staff will visit the facility periodically in accordance with the Waste Discharge Requirements. During those visits the landfill will be inspected for damage or other conditions that require repair or maintenance. Site security features will be assessed as well. 3.2.2 Final Cover County staff will periodically inspect the final cover in accordance with permit and regulatory requirements. In particular, an inspection will occur in September before the start of the rainy season and after every major rainstorm during the rainy season. The inspection in September documents the condition of the final cover and drainage features before the rains and if problems are found, allows sufficient time for the County to make repairs. Inspections after each major rain storm allow the County to find and correct damage that may have been caused by the rain event. Repairs will likely consist of repairing erosion damage and repairing storm water control features such as culverts, down drains, and inlet and outlet structures. The repairs will ei ther be made by County staff or by a contractor hired by the County. 3.2.3 Groundwater Monitoring Groundwater monitoring wells are durable and are not expected to have a high failure rate. Possible problems include damage by heavy equipment and possible se dimentation of the groundwater monitoring wells. These costs are included in the Post-Closure Maintenance costs. During the post-closure period, the County will collect samples from these monitoring points as required by the Waste Discharge Requirements, anticipated to be twice annually. At the time of monitoring the condition of the monitoring points will be noted and if a problem is observed, the County will take steps to correct the problem. These costs are included in the Post -Closure Maintenance costs. 3.2.4 Storm Water and Surface Water Monitoring Points Storm water and surface water monitoring points will be monitored in accordance with the Waste Discharge Requirements. Sampling requires that water is flowing, either along the creek at the eastern edge of the property (surface water) or leaving the site from one of the discharge points (storm water). Historically, the County has been able to take no more than one of these samples annually. For the purposes of post closure cost estimates, it is assumed that the County will be able to take a similar number of samples. 3.2.5 Landfill Gas Migration Monitoring Monitoring the LFG migration monitoring system is anticipated to continue quarterly. 3.2.6 Landfill Gas Collection and Control System Operation and maintenance of the LFG collection and control system will be a substantial effort during post closure. Since FSL is a large facility, this LFG system may be staffed full-time. However,