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Forward, Inc. - 3 - 09 January 2024 Forward Landfill San Joaquin County The Facility utilizes the open windrow composting technique. Incoming material is delivered to the Facility and is weighed at the scale house. The material will be separated into windrow and ASP piles. Chipping and grinding will then occur before the feedstock are placed into a compost pile. The windrow composting area is roughly 11.5 acres with a composting period range of four to twelve weeks for the active phase and one to six months for the curing phase. A machine is used to turn the windrow piles. The ASP composting area is roughly 3 acres and utilizes forced positive aeration through the feedstock. The composting period range for the ASP compost is typically four weeks for the active phase and four weeks for the curing phase. Temperature and aeration are monitored throughout the ASP composting process. Post composting, the finished compost product is moved to the northwest corner of the Facility for screening, storage, and product load out. The Facility has an existing 1.9-acre detention pond with a capacity of approximately 10.1 acre-feet and 2-foot freeboard (approximately 598,700 cubic feet or 4.5 million gallons). The Technical Report indicates that the detention pond capacity can contain a 25-year, 24-hour storm event volume of 5.4 acre-feet. The pond’s containment system, from top to bottom includes:  60-mil single-sided textured HDPE geomembrane liner  Geosynthetic clay liner (GCL)  Prepared subgrade The detention pond also has a 3-foot deep pan lysimeter located in the southwest corner. Access to the pan lysimeter is via an 18-inch HDPE riser pipe that extends to the crest of the retention pond. MONITORING AND REPORTING The Discharger will conduct a monitoring program as prescribed in the applicable portion of Attachment B of the General Order’s Monitoring and Reporting Program (MRP). The first year Annual Monitoring and Maintenance Report as identified in the General Order must be submitted to the Central Valley Water Board no later than 1 April 2024 and then annually by 1 April each year. The pan lysimeter underneath the detention pond shall be checked monthly and follow the monitoring requirements listed in Attachment B Section 2. SITE CLOSURE The Discharger will notify the Central Valley Water Board in writing within 90 days of the conclusion of site closure. A Site Closure Plan will be submitted to the Central Valley Water Board for review and approval. RECOMMENDATIONS