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Report of Composting Site Information ® Tracy Material Recovery and Transfer Facility 30703 S. MacArthur Drive, Tracy, Ca. 95377 Digestate from anaerobic digestion facilities — that has already undergone several days of in-vessel composting prior to delivery to the facility — may be composted in windrows if it does not create odor problems, following a demonstration project. If the already composted digestate is malodorous then it will be placed in the aerated static pile system. Anaerobic digestion digestate that has not undergone in-vessel composting prior to delivery will be placed in the aerated static pile system. Composting Process Overview An overview of the various composting processes is presented below: Elongated Windrow Method • Incoming trucks are received and weighed at the scale located near the Gate House. The scale personnel will direct haulers to the appropriate area of the composting facility. Appropriate signage in conformance with the requirements of 14 CCR §17867(a) (7) will be placed within the composting facility. • The facility personnel will conduct a load check during unloading. At least one trained load-checking employee will be present during deliveries. Contaminated and uncompostable materials will either be returned to the hauler or placed in bags or cans or set aside. Aft • The green material, yard trimmings, and wood wastes will be processed in a portable horizontal grinder within the boundary of the compost operations area or deposited directly into the windrows. • All incoming co-collected organic (CCO) feedstock (85% green waste/15% food waste) will be commingled at the point of generation from residential areas via the use of curbside green waste 'toters'. The CCO feedstock will come to the facility where the feedstock is ground on-site, when needed, and then placed in windrows. • The CCO feedstock that to be processed at the facility will be placed into an exclusive stockpile next to the grinder, and will be ground within 24 hours of receipt. The processed CCO material will then be formed into elongated windrows in the CCO composting area for on-site composting. • Incoming material will be shaped into piles within an average of 7 days of receipt for green material and within 48 hours for food waste. • Some material may arrive already processed, but if not, the material will be processed in a grinder in the Processing Area and deposited directly into the windrows. A front-end loader will be used to feed the material into the grinder. The ground material will be formed into elongated windrows for on-site composting. • The material is formed into trapezoidal-shaped windrows. Windrow dimensions will depend on the type of windrow turner used, but are typically up to 20 feet wide, 8 feet high, and have varying length. Windrows are separated by an access road for windrow loading, monitoring, watering, and turning. 11