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BASE AND SLOPE LEACHATE COLLECTION AND REMOVAL SYSTEM DESIGN <br /> WMU FU-17 <br /> FORWARD LANDFILL <br /> PROBLEM: <br /> Size the leachate collection and removal system components for the base of WMU FU-17. <br /> GIVEN: <br /> These calculations were previously performed for the WMUs D-95, D-97, D-98,D-99, D-00,D-01, D-02, <br /> FU-03, FU-04, FU-05,FU-06, FU-08,FU-10,FU-13,and FU-14 design. The same methodology for <br /> performing the previous calculations was used for the WMU FU-17 calculations. Previous calculations are <br /> used,referenced,or attached,where applicable. <br /> SUMMARY: <br /> 1. Required permeability of granular drainage material is 0.1 cm/sec. <br /> 2. Required permeability of coarse gravel is 1 cm/sec. <br /> 3. Specify 6-inch diameter,SDR 11 HDPE pipe. <br /> 4. Specify perforation pattern for pipes of 1/2-inch diameter holes drilled at third points every 6-inches <br /> along pipe length. <br /> 5. The temporary sumps are sized assuming the maximum leachate generation time is when there is only <br /> a 10-ft lift of refuse in the cell. <br /> is 6. Site personnel will select the pump size. <br />