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III.B.3. Seismic Stability 14 CCR 17777 Stability calculations are not required for cover slopes less <br /> than 3:1 unless landfill is located in areas subject to <br /> liquefaction or unstable areas with poor foundation conditions. <br /> It is recommended that a geotechnical analysis be conducted <br /> to determine if liquefaction conditions exist in the landfill <br /> subgrade. <br /> III.B.4. Settlement Analysis 14 CCR 17776 The Austin Road Landfill Expansion Landfill Settlement Appendix E, <br /> Analysis letter report discusses landfill settlement and includes Landfill Settlement <br /> settlement calculations for final closure settlement, vertical Analysis <br /> expansion liner settlement, and horizontal expansion liner <br /> settlement. It is recommended that additional geotechnical <br /> investigation work be conducted prior to the final design of the <br /> vertical expansion to define the compaction characteristics <br /> and variability of the existing refuse fill. It is also <br /> recommended that additional geotechnical investigation and <br /> analysis be conducted to determine the settlement <br /> characteristics of the horizontal expansion subgrade. <br /> III.B.5. Leachate Generation Leachate generation estimated using HELP model, see FDSR Appendix I, FDSR <br /> Appendix B "HELP Model and Leachate Generation Appendix B <br /> Quantities". <br /> III.B.6. Drainage System See FDSR Appendix D "Stormwater Detention Calculations" Appendix I, FDSR <br /> Capacity Requirements for detention pond sizing calculations and ditch capacity Appendix D <br /> calculations. See RDSI Appendix L for creek relocation Appendix L <br /> design. <br /> 111.13.7. Gas Generation and Air The Austin Road Landfill Expansion Landfill Gas Generation Appendix F, Landfill <br /> Emission Calculations Analysis letter report discusses gas generation and projected Gas Generation <br /> emissions. Analysis <br /> iII.B.8. Soil Erosion Analysis 14 CCR 17779 See FDSR Section 1.5.7 and FDSR Appendix C "Universal Appendix I, FDSR <br /> Soil Loss Equation Calculations". Appendix C <br /> I.V. DISPOSAL SITE IMPROVEMENTS <br />