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<br />WMU FINAL WMU FU-23 DESIGN REPORT 2-18-23 2-2 <br />• The WMU FU-23 liner and LCRS will be connected to WMUs FU-17 and FU-19 liner and LCRS <br />and leachate from these cells will be routed to the WMU FU-23 sumps. <br />• The edges of the WMU FU-23 liner include termination berms that protect the edge of the liner <br />(see Construction Drawings in Appendix A) and allow connection of the WMU FU-23 lining <br />system to adjacent future WMUs to the north and east. The berms also define the limits of waste <br />placement. <br />2.3 Slope Lining System <br />WMU FU-23 incorporates a 2:1 (horizontal:vertical) slope on the southern boundary that is consistent <br />with the excavation slopes for the tie-in to WMU FU-19. <br /> <br />2.4 Refuse Fill Grades <br />Final waste grading plans are not included in this report. This information is available in the <br />Preliminary Closure and Postclosure Maintenance Plan (Lewis Engineering, 2020). The maximum <br />waste fill slope during the filling of WMU FU-23 will be approximately 3:1 with 20-ft wide benches <br />or roads approximately every 50 vertical feet, as presented in the slope stability analysis in <br />Appendix B and discussed in Section 3 of this report.