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• The leachate collection and recovery system is designed to remove twice <br />the anticipated leachate production, which occurs in the first year of a <br />Module's use based on rainfall. <br />• Drainage designs use local rainfall data a basis for system sizing. <br />• Eyapotranspirative closure cap design considered rainfall in its design. <br />5.3.4 Seismic Design <br />The units will be designed to withstand the maximum probable earthquake (MPE) <br />without damage to the structures that control leachate, storm water, erosion, or gas, in <br />accordance with applicable regulations.-�+ <br />The stability of the landfill was investigated in 2002 by -Shaw Environment and <br />Infrastructure, concurrent with the design of Module 1. This evaluation found that global <br />slopes of 3.4 to 1 were stable when minimum shear strength parameters were provided <br />(Appendix F). This requirement is incorporated into the design slopes of the landfill <br />(Figure 6). In addition, it was estimated that the maximum acceleration due to a seismic <br />event would be 0.0548, much less than the calculated yield acceleration of 0.098. The <br />nearest seismic fault is the Stockton Fault (Figure 13). From this we conclude that there <br />would not be movement of the refuse mass in case of the MPE. <br />5.3.5 Maximum Height <br />The maximum height of the refuse fill is -�32 <br />feet MSL. The County may seek to raise the permitted height limit, subject to regulatory <br />�proval. A height increase will require revision of the Preliminary Closure/Post Closure <br />Maintenance Plan. <br />The County recognizes that a discussion of the intent to request a permit height increase <br />in this JTD does not constitute a reauest or application for that permit revision. <br />Foothill Sanitary Landfill Page 46 Public Works/Solid Waste <br />Joint Technical Document County of San Joapuin —Revised 7/30/10 <br />