CORRESPONDENCE_4/7/22 [REV] APPENDICES W/FIRE PERMIT

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Forward Resource Recovery Facility WDR Technical Report HDR Engineering, Inc. 4 October 2021 Water Supply: On-site water wells (See Section 2.4) 1.3 Site Plan Description The Forward Compost Site Plan is included in Appendix A and shows the existing location of the windrow composting and proposed ASP composting system. The site plan also includes material receiving, pre-processing screening, and finished product storage. The site drainage plan, which shows surface water flow and discharge points from the site, is included in Appendix B. All material enters the facility through the main entrance off Austin Road and is weighed in at the scale house. The material receiving area will have designated piles for the feedstock destined for the windrow composting operation and the ASP composting system. Chipping and grinding will occur in this area; both the windrow and ASP composting systems will share material handling equipment. After pre-processing the material, the feedstock will be placed into a compost pile. Composting occurs throughout the site as shown in Appendix A. Post-composting, the finished compost product is moved to the northwest corner of the site for screening, storage, and product load out. The site drains to ditches with capacity for a 25-year, 10-minute duration storm (0.368 inches). Water from all composting areas (the entire 39.1 acres) flows to a retention basin sized for the 25-year, 24-hour storm event on the west side of the composting area. Stormwater drainage patterns, best management practices (BMPs), and sampling locations and protocols are located in the facility’s Stormwater Pollution Prevention Plan (SWPPP), which is incorporated here by reference. The facility is covered under the California Industrial Stormwater General Permit (IGP) with the Waste Discharger Identification (WDID) number 5S39I015679. 1.4 Background Information The Forward Resource Recovery Facility (Facility) is located at 9999 South Austin Road in the City of Manteca, California. The existing compost facility has obtained the appropriate approvals from all regulatory agencies to operate. Specifically, the Lead Agency, County of San Joaquin, has approved the construction and operation of compost activities in the area south of the South Fork of South Littlejohn’s Creek. The composting facility has obtained air permits from San Joaquin Valley Air Pollution Control District (SJVAPCD) to cover its existing operations including receiving, mixing, and storage, open windrow composting, finished compost loadout, and compostable material handling equipment. The facility also has a Solid Waste Facility Permit (SWFP) complete with a Report of Composting Site Information (RCSI), which is hereby incorporated by reference. The facility currently shares coverage under a site specific WDR that covers both the windrow composting facility and the adjacent landfill, Forward Landfill. This Technical Report is for coverage under the General Order Waste Discharge Requirements for Commercial Composting Operations, State Water Resources Control Board Order WC 2020-0012-DWQ (General Order) and is for only the windrow and ASP composting activities.