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B. Composting Material consisting of leaves, bulky agricultural products, source separated organic material, and presorted garden waste from the general public and landscapers is delivered to the composting area shown on Figures 5 and 5a. Types and quantities of this material is described below: Type of Material Quantity(tons/y CURRENT PROJECTED Leaves delivered by City of Lodi crews in the fall 4,000 15,000 Source separated organic material 1,000 5,000 Presorted wasted from the general public, landscapers, etc. 1,000 5,000 Grape stems 1,000 3,000 Grape pumice 4,000 12,000 Tomato Waste 3,000 9,000 TOTAL 14,000 49,000 Upon receipt, the material is sorted and placed in windrows measuring 8 feet high, 18 feet wide at the base, and approximately 300 feet in length. Composting is achieved through a natural aerobic process whereby a controlled environment is created for bacteria to exist. The rate at which the material will decompose is dictated by the composition of the organic matter being used. Carbon and nitrogen exist in the material as delivered and the other two elements needed for decomposition, water and oxygen are added on a regular basis. This is accomplished by the use of a Scarab aerator which turns and aerates the windrows every two weeks. Water is added as necessary to maintain approximately 30 percent moisture. The processing time varies from 6 weeks to 8 months depending on the t of material P g type being composted. The finished material is screened and sold as a soil amendment for agricultural application. It is also used in landscaping and local park maintenance. A variable percentage of the agricultural waste received is used in the composting operation. The remainder is sold for animal feed. Analysis of representative samples of the various blends of compost produced are shown in Appendix A. 9