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Odor Impact Minimization Plan—Compost Facility Tracy Material Recovery Facility and Transfer Station 30703 5 MacArthur Drive, Tracy, California 35377 • Points for probe insertion shall be chosen to produce the most representative readings of internal temperatures. Enclosed aerated static pile Composting (CTI System): Incoming food waste material will be processed and loaded into composting bags within 48 hours of receipt. Processed materials may be combined with process liquid, which may be collected during initial composting phase, from existing filled composting bags. Once processed and mixed, materials will be loaded into composting bags within 48 hours; materials not bagged immediately after mixing may be tarped to minimize any potential odors. A forced-aeration system is installed in each composting bag and designed to supply uniform air flow to the full length of the bag maximizing n aerobic conditions during the composting processthus minimizing odors. The composting material within each bag acts, to a significant degree, as its own biofilter. n �I The composting operations occur on a concrete pad that is sloped to drain at a minimum of 1%. The concrete pad is maintained as to not allow ponding that could k initiate anaerobic conditions and possible odors. The pad has year round access f where incoming and outgoing loads can be handled in a timely manner. During peak season, the total volume of material on-site will not exceed 56,000 cubic yards. Section 17863.4 (b) (1) - Odor Monitoring Protocol II Properly managed green material stockpiles should not create nuisance odors. Improper management of raw feedstock piles, organic stockpiles, and processed green material may cause nuisance odors. The compost operator and the community must be willing to work together to monitor, evaluate, and allow time to make changes should nuisance odors be emitted and an odor complaint be received. The best way to ensure that all parties work together is to implement an odor impact minimization plan that is agreed upon between the operator and the LEA. I The closest receptors will be operations staff and management who will be onsite I` during operating hours to monitor the compost materials handling operation. The operation is sited in rural San Joaquin County away from most sensitive receptors. The California lntegrated;Waste Management Board has identified 1,000 feet as the distance required,for identification of receptors. # 1 1 Possible receptors are: 1) the Lone,:!Star Industries gravel mining operations on the parcel adjacent to the west; 2) Teichert Aggregates operation of a sand and } gravel mining facility to the north; and 3) two residences (mobile homes) located approximately 600 feet north of the site on the east side of MacArthur Drive. There is also one residence approximately 1.4 miles south of the site on the west side of MacArthur Drive. The closest residential subdivision is approximately one mile north of the site along MacArthur Drive. it 1 F 7 17018 Tracy O[MP 121907.doc