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face. After each vehicle unloads they proceed back to the scale house to weigh and pay. <br />Plate 14 shows the traffic flow for waste placement in Module 1. <br />After waste is deposited at the active face, it is moved by dozers and bladed compactors to its <br />final resting spot. The compactors spread and compact the wastes by making repeated passes <br />over an area. As the process is repeated, each lift of waste receives a number of passes of the <br />compactor which increases the density of the waste. The dozers are used to assist the <br />compactors in moving wastes to meet the rate of disposal. The operators observe diposed refuse <br />for unpermitted and hazardous wastes. Procedures are established for removing these wastes <br />from the fill area before covering. <br />The direction of filling in each module will be detailed in the design report for the module and <br />will be based on refuse fill stability. Operational issues, such as the direction of access to the <br />module will also be considered in assessing the refuse fill directions for each module. In general, <br />refuse filling in a module will begin on the same side as the boundary with the previous module. <br />Also, refuse filling will occur in uniform lifts between the side slopes to reduce the refuse loads <br />imparted on side slope lining systems. <br />7.2. COVER <br />7.2.1. Cover Materials <br />Currently, daily cover material is obtained by excavating from the area of the next planned <br />module or from the existing stockpiles (Plate 2.1). The excavation sequence is described in <br />Section 5. As noted above, typically the module adjacent to the active cell is excavated, <br />removing soil not already removed for landfill cover. The Foothill Sanitary Landfill site is <br />expected to have an abundance of soil to be used for cover. As discussed in Section 4.4, <br />approximately 35.6 million cy of on-site soil is available for use as cover material. <br />Approximately 15.4 million cy of soil will be needed for daily and intermediate cover. An <br />additional 3.4 million cy of soil will be needed for final closure (assuming an ET cap) <br />The operator currently uses cover soil at a refuse to soil ratio of approximately 4:1. <br />Foothill Sanitary Landfill Page 48 of 62 Public Works/Solid Waste <br />JTD County of San Joaquin — Revised 10/6/05 <br />