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within each leachate collection trench to increase the drainage capacity of the LCRS. Each pipe will be surrounded by coarse gravel wrapped with a nonwoven geotextile to prevent migration of fine particles from the overlying LCRS granular drainage material. The minimum hydraulic conductivity of the coarse gravel will be 1.0 cm/sec. The coarse gravel will be washed and have a maximum particle size of 1 inch with less than 20 percent of particles smaller than 1/2 inch, 5 percent finer than the No.4 sieve, and 2 percent finer than the No.200 sieve. The leachate collection pipe will be perforated at third-points,with 1/4-inch-diameter holes, spaced 6 inches on center. Termination berms will be constructed around the perimeter of the unit. The interior slopes of the termination berms will be lined with a 60-mil HDPE geomembrane to contain leachate within the unit. The granular drainage material of the base LCRS will be underlain and overlain by a sheet of nonwoven geotextile filter fabric. The geotextile functions as a filter to separate and prevent intrusion of fine materials from the adjacent soils into the granular drainage material. This will allow the granular drainage material to retain its specified hydraulic conductivity by preventing clogging from piping of fines. Leachate collected within the northern portion of WMU FU-06 will drain to leachate collection header pipes at the southern edge. The leachate header pipes will be routed to a temporary leachate tank. Once WMU FU-06 is completed and approved for disposal by the RWQCB, the leachate header pipe that drains to the temporary leachate tank will be removed and the liner and LCRS in the northern and southern portions of WMU FU-06 will be connected. Specifications for the granular drainage material, coarse gravel, HDPE pipe, and geotextile are included in Appendix C. Quality assurance testing of the LCRS materials is outlined in the CQA Manual (Appendix D). The testing includes particle size and hydraulic conductivity for the granular drainage material and coarse gravel and manufacturer's certification of material properties for the geotextile. Details of the composite liner and LCRS components are shown on the Construction Drawings in Appendix A. 5.3 Protective Operations Layer A protective operations layer will be placed above the base LCRS to protect the LCRS, pipes, and composite liner from construction and operations traffic. The protective operations layer will consist of a minimum 12-inch-thick layer of generally sandy material excavated from onsite stockpiles. The maximum particle size of the sandy material will be limited to 1 inch to protect the underlying geotextile or GDN from puncture. A 12-inch-thick protective operations layer will also be placed above the lining and LCRS system on the slopes, concurrently with waste placement. The side slope operations layer will be placed a maximum of 10 feet ahead(vertically)of the waste to minimize the tensile loads on the geosynthetics. The operations layer will be placed using a wheel loader, so that no equipment loads are exerted on the liner. Forward has previously used a Caterpillar 966F wheel loader with a 4.5 cy bucket to place operations layer on the WMU slopes. Specifications for the protective operations layer are included under general earthwork(Appendix C). WMU FU-06 REPORT 5-7