Laserfiche WebLink
The general module locations and fill limits are shown on Plate 5. Bottom grades used in the <br /> volume calculations were based on the base grades for Modules 1 and 2 of 90' for Modules 3 and <br /> 4 of 62'. This assumed a 2' operations layer. The average bottom depth of 62 feet in Modules 3 <br /> and 4 was used in the volume calculations for the future modules. <br /> 6.4.3 Fill Sequencing Plans <br /> Currently MSW is being placed in Module 4. Current sequencing plans are to fill Module 4 to <br /> near final maximum permitted elevation and then move to Module 5. When Module 5 is <br /> approximately half filled, disposal operations will be moved to Module 6. Once the elevation of <br /> Module 6 approaches that of Module 5, filling will occur across the surface of both modules until <br /> final grade is reached. <br /> 6.5 LEACHATE COLLECTION AND REMOVAL SYSTEM <br /> All modules will have a leachate collection and recovery system (LCRS). Leachate collection <br /> systems include collection troughs with lateral and header piping surrounded with drainage <br /> gravel. Each lateral leachate pipe is equipped with a pipe riser for inspection and cleaning if <br /> necessary. Leachate from the troughs drain toward a leachate sump which will includes sensors <br /> and automatic pumps to control leachate. Above ground leachate storage tanks are and will be <br /> used to receive leachate pumped from the sump, in advance of leachate handling for disposal. <br /> Monitoring and reporting will continue in accordance with the WDRs in Appendix A. <br /> 6.6 SURFACE WATER DRAINAGE PLANS <br /> The plan for final surface drainage is shown on Plate 16 and 17. Temporary drainage will be <br /> managed as described in Section 7.6.5 and shown on the Drainage Plan on Plate 17. As the <br /> landfill surface changes over time and as deemed necessary by the County, the County will <br /> design and construct temporary surface water drainage features to control runoff and erosion. <br /> Erosion control on surfaces that have reached their near-final elevation will be provided by <br /> establishing vegetation and constructing drainage berms or benches to direct storm water away <br /> from refuse fill areas to the existing storm water facilities. A copy of the County Stormwater <br /> Pollution Prevention Plan is included in Appendix G. <br /> North County RC&SL Page 29 of 48 Public Works/Solid Waste <br /> JTD County of San Joaquin—November 30,2004 <br />