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Estimated quantities and types of material anticipated to be received at the Composting Facility are described in Section I.C. of this report. Descriptions of each process are also described elsewhere in this report. 4. FACILXrY CON STRUCnON The facility construction for the entire MRF/Transfer Facility is shown on the Preliminary Development Plans in Section 3. The proposed layout and details of the Composting Facility is shown on Figures 7 and 8 in Appendix A as described above. As shown on Figure 7, unloading, processing and storage areas are indicated. Unloading areas for commercial and self- haul vehicles are separated with commercial vehicles on the east side and self-haul vehicles on the south side. Material processing that includes grinding, screening and material transfer will occur in the middle of the pad, away from the unloading area for safety. Windrowing and final curing will occur adjacent to the processing area also away from the unloading to separate and reduce conflicts with equipment operations and vehicle unloading. Equipment used at the Composting Facility will consist of a loader, a self propelled windrow turning machine, screener and a tub grinder. As shown on Figure 7, the various composting operations and equipment locations are sufficiently separated to provide for safe handling. Drainage control systems and proposed utilities for the Composting Facility are shown of Figures 4 and 5 and are described qlsewhere in this report. 'OkV0,M q WaWz- dt"Sylu- 5. GRADING PLAN Grading and drainage for the facility including the Composting Facility is shown on Figure 4 and Sheet 3. The compost pad will drain via surface swales at a minimum grade of I percent to a lined evaporation pond. The pond will contain all runoff from the compost pad and will either be reused in the composting/processing operations or evaporated. 6. PAD COMPOSITION AND DIMENSIONS All composting operations with the exception of some wood storage and loadout will occur on the paved compost pad. Figure 8 shows the proposed construction details for the compost pad and lined evaporation pond. The pad will be constructed of a minimum 6 inches reinforced concrete over a minimum 8 inches aggregate base compacted to 95 percent relative compaction. Pad dimensions for the initial construction will be 200 feet by 300 feet with expansion to occur to the north as necessary for increased material volumes. LIPROJECT/3971MIRFIRCI14.TCY December 15, 1993