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Report of Composting Site Information Tracy Material Recovery Facility and Transfer Station 30703 S. MacArthur Drive, Tracy, Ca. 95377 Anaerobic digestion digestate that has already undergone several days of in-vessel composting prior to delivery to the Tracy MRF/T/ may be composted in windrows if there are not odor problems. If the already composted digestate does produce an odor problem then it will be placed in the aerated static pile system. Tracy MRF/TS and CF will keep the windrowed material at a temperature between 131 and 160 degrees Fahrenheit for a fifteen-day period, turning the windrows a minimum of five times throughout those fifteen days in order to reduce pathogens. Each day during the pathogen reduction period, at least one temperature reading will be taken a minimum of every 150 feet of windrow and the temperatures will be taken 12 to 24 inches below the pile surface. Tracy MRF/TS and CF will keep accurate records of the fifteen-day pathogen reduction period, plus all other temperature records, until each windrow reduces to a temperature below 131 degrees Fahrenheit. The temperature records will be stored at the onsite office. After the fifteen-day pathogen reduction period, Tracy MRF/TS and CF will continue to turn the windrows as needed, approximately every three to seven days; the composting time will typically take two to three months. Tracy MRF/TS and CF will also conduct temperature monitoring on all piles of compostable materials that are greater than 6 feet in height. The monitoring will be conducted weekly and will be documented in the operating records. In the event that any pile has a temperature greater than 175 degrees Fahrenheit, Tracy MRF/TS and CF will take appropriate measures to cool the pile down (e.g. spread the pile out, add water, or process by grinding and screening) and will monitor the pile daily until the temperature drops below 175 degrees Fahrenheit. • Food Waste Food waste rich feedstocks would be blended with green waste to achieve a blend of up to about 40% food waste, and would be composted using covered aerated static pile compost methods. Aerated static piles would be covered either with an impermeable cover and/or finished compost (or compost overs) to control emissions and storm water infiltration. The active compost will be maintained at a temperature of 55 'degrees Celsius (131 degrees Fahrenheit) or higher for a pathogen reduction period of at least 3 days. Digestate Anaerobic digestion digestate that has not undergone in-vessel composting prior to delivery will be placed in the aerated static pile system. Finished Compost The finished compost will be screened, with the smaller diameter material being used as soil amendment and the larger diameter material being sold for biomass or reground and screened. During the screening process, metals will be screened out using a magnet attached to the screen and grinder. The metals screened out of the material will be containerized and delivered to an appropriate facility for additional processing or disposal. Finished compost may be blended with the aforementioned additives or amendments prior to delivery to markets., MRF/TS and CF will test for heavy metals and pathogens for every 5,000 cubic yards of compost produced, in accordance with 14 21