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Report of Composting Site Information <br /> Tracy Material Recovery Facility and Transfer Station <br /> 30703 S. MacAurthur Drive, Tracy,Ca. 95377 <br /> piles of compostable materials that are greater than 6 feet in height. The monitoring will <br /> be conducted weekly and will be documented in the operating records. In the event that <br /> any pile has a temperature greater than 185 degrees Fahrenheit, Tracy MRF/TS and CF <br /> will take appropriate measures to cool the pile down (e.g. spread the pile out, add water, <br /> or process by grinding and screening) and will monitor the pile daily until the <br /> temperature drops below 175 degrees Fahrenheit. <br /> • Food Waste <br /> Food waste rich feedstocks would be blended with green waste to achieve a blend of up <br /> to about 50% food waste, and would be composted using covered aerated static pile <br /> compost methods. Aerated static piles would be covered either with an impermeable <br /> cover and/or finished compost (or compost overs) to control emissions and storm water <br /> infiltration. The active compost will be maintained at a temperature of 55 degrees <br /> Celsius (131 degrees Fahrenheit) or higher for a pathogen reduction period of at least 3 <br /> days. <br /> • Digestate <br /> Anaerobic digestion digestate that has not undergone in-vessel composting prior to <br /> delivery will be placed in the aerated static pile system. <br /> Finished Compost <br /> The finished compost will be screened, with the smaller diameter material being used as <br /> soil amendment and the larger diameter material being sold for biomass or reground <br /> and screened. During the screening process, metals will be screened out using a <br /> magnet attached to the screen and grinder. The metals screened out of the material will <br /> be containerized and delivered to an appropriate facility for additional processing or <br /> disposal. Finished compost may be blended with the aforementioned additives or <br /> amendments prior to delivery to markets., MRF/TS and CF will test for heavy metals <br /> and pathogens for every 5,000 cubic yards of compost produced, in accordance with 14 <br /> CCR 17868.1, 17868.2, & 17868.3. The compost samples are analyzed for maximum <br /> acceptable metal concentrations of arsenic, cadmium, chromium, copper, lead, <br /> mercury, nickel, selenium, and zinc by a laboratory certified by the California <br /> Department of Health Services. <br /> The Tracy MRF/TS and CF equipment operator will be trained using the equipment- <br /> operating manuals, hands on training by the present employee/operators and ongoing <br /> safety programs. <br /> Employees are trained by experienced personnel on maintenance of equipment, <br /> technical aspects of composting procedures, and safety precautions. <br /> Disposition of Material Exceeding Established Limits <br /> Tested material exceeding established limits for pathogens or metals shall be retested. <br /> If results show incomplete pathogen destruction, the material will be composted for <br /> another cycle of at least 15 days to achieve pathogen reduction. If, after this period, <br /> failing results are found, the material will be legally disposed offsite. <br /> 21 <br />