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FORWARD S. Austin Road Manteca, CA 95336 Landfill ]r P: (209) 982-4298 F: (209) 982-1009 Brendan Kenny Engineering Geologist Central Valley Regional Water Quality Control Board 11020 Sun Center Drive, Suite 200 Rancho Cordova, CA 95670 July 15, 2025 RE: Forward Landfill — Quarterly Corrective Action Program Update — Second Quarter 2025, Forward Landfill, 9999 South Austin Road, Manteca, California Dear Brendan: In accordance with Task 9.a of the April 10, 2017 Cleanup and Abatement Oder R5-2017-0703 issued by the California Regional Water Quality Board — Central Valley Region, Forward, Inc. (Forward) is pleased to submit this Quarterly Corrective Action Program Update for the Forward Landfill. During the second quarter 2025 reporting period, no volatile organic compounds were detected above the practical quantitation limit in the Site's groundwater treatment system effluent samples collected. Therefore, the groundwater treatment system operated in compliance with the Waste Discharge Requirements set forth in Water Board Order No. R5-2024-0002. Order No. R5-2024-0002 was finalized on February 16, 2024, and superseded Order No. 115-2014-0006. Forward continued to provide operation, monitoring, and maintenance for 14 residential groundwater treatment systems on Austin and Newcastle Roads. The effluent sample concentration limit for VOCs at each residential groundwater treatment system is non -detect. During the reporting period, all residential groundwater treatment system effluent sample concentrations were in compliance with this effluent limit. The landfill gas collection and control system operated continuously with minimal downtime. In addition, and as previously requested, Forward requests a change to the submittal date for the Quarterly Corrective Action Program Updates from the 15" day following the end of the quarter to the 30' day (for example, July 30 as opposed to July 15). This will allow sufficient time for our contractors to tabulate data and coordinate report preparation. I certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments, and that based on my inquiry of those individuals immediately responsible for obtaining this information, I believe that the information is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. If you have questions or comments regarding the above information, please contact me at (209) 601-2274. Kindest regards, Osvaldo Cordero Environmental Manager 209-235-9622(o) ocordero@republicservices.com