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2. Backfill and slope the excavated areas with clean soil. Inspection Report Comments 1. The LFG flare was not operating at time of inspection. 2. Perimeter fence is secure. Access gate is in good condition and locked. The font sign with the facility name and address has been replaced and posted at the entrance. 3. The site was covered in mulch since the 2024 summer fire and grass has regrown to cover the site. No erosion was observed. 4. Bait stations were observed throughout the facility. 5. 1st quarter LFG perimeter monitoring well data was received from the operator and reviewed to be complete. All data points were 0.0 methane detected. 6. The GW-3 landfill gas perimeter well was tested during the inspection: shallow CH4 = 0.0%, CO2 = 0.3%, O2 = 20.6%, Balance = 79.1% mid CH4 = 0.0%, CO2 = 1.0%, O2 = 20.1%, Balance = 78.9% deep CH4 = 0.0%, CO2 = 0.9%, O2 = 20.3%, Balance = 77.5% 7. The GW-1A landfill gas perimeter well was tested during the inspection: shallow CH4 = 0.0%, CO2 = 0.2%, O2 = 20.3%, Balance = 79.5% mid CH4 = 0.0%, CO2 = 1.4%, O2 = 20.0%, Balance = 78.6% deep CH4 = 0.0%, CO2 = 3.3%, O2 = 19.2%, Balance = 78.9% 8. According to the operator, the Corral Hollow Road and I-580 highway interchange may be widened and encroach onto the landfill property. If the property owners or potential buyers are planning any Post Closure Land Uses (PCLUs) for the site, see Title 27 California Code of Regulations section 21190 for PCLU requirements including the PCLU Plan. The Plan shall be submitted to the Local Enforcement Agency (San Joaquin County Environmental Health Department), the Regional Water Quality Control Board (RWQCB), local air district and local land use agency for review and approval prior to commencing any construction or pre- construction activities. 9. According to the operator, the Corral Hollow Road and I-580 highway interchange may be widened and encroach onto the landfill property. The work may include eminent domain of land for the interchange. An owner or operator of a disposal site who plans to sell, transfer or convey the ownership or operation of the disposal site to a new owner or operator shall notify the Local Enforcement Agency (San Joaquin County Environmental Health Department) and CalRecycle 45 days prior to the anticipated transfer of title. This notification shall include the name(s), address(es) and phone number(s) of the new owner or operator. Title 27 California Code of Regulations section 21200. Closed Disposal Site Inspection Report (188) Corral Hollow Landfill (39-AA-0005) 2/19/2025 CalRecycle Solid Waste Information System (SWIS)Page 2 of 3 Date Generated: February 24, 2025 11:39 AM