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Report of Composting Site Information Tracy Material Recovery Facility and Transfer Station 30703 S. MacArthur Drive, Tracy, Ca. 95377 A. DESCRIPTION OF THE COMPOSTING PROCESSES TO BE USED, INCLUDING ESTIMATED QUANTITIES OF FEEDSTOCKS, ADDITIVES, AND AMENDMENTS This project involves the addition of composting technologies and feedstock to those currently used at the Tracy Material Recovery and Transfer Station (MRF/TS), Compost Facility (CF). The overall facility is designed to process an average of 800 tons per day and a peak of 1,000 tons per day delivered to the site. The Compost Facility was originally designed to have sufficient capacity to receive and process 170 tons per day over an area of 5 acres, with peak loads up to 180 tons per day. The Environmental Impact Report prepared in 1993, when the Conditional Use Permit was obtained from San Joaquin County, anticipated a throughput of 132 tons per day of green material and wood waste. Current operations consist of an input of approximately 35 tons per day of green waste and 35 tons per day of wood waste. The Solid Waste Facility Permit (July 2003) specifies a permitted capacity of 1,038 tons per week. Assuming only 38 tons of material are received on Saturday, the 1,038 tons per week translates into an average daily permitted throughput of 200 tons per day, Monday through Friday. The Composting Facility receives green material from yard waste and agricultural waste. The current composting technology used at the facility is the elongated windrow method. This proposal includes the addition of co-collected organics (CCO) from residential areas, which is a mixture of green materials and food waste (< 15% food waste), that would be composted using the existing method, the elongated windrow method. Additionally, the use of an additional composting system is also proposed, referred to as an aerated, static pile method, which would be used to compost a combination of commercial and institutional food waste mixed with green material. Tracy MRF/TS-CF proposes the potential use of several different compost methods. • Elongated and compressed windrow • Elongated and extended aerated static pile Aerated static piles would be covered with an impermeable cover and/or finished compost (or compost overs) to control emissions and storm water infiltration. Prior to reaching the compost facility, the haulers of source-separated green materials require their collection route drivers and helpers to watch for unacceptable materials at the pickup points and not include such materials in the loads. Many communities institute a notification system with the generator whereby contaminated loads are not collected. 5