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11 <br />future modules consists of a soil operations layer, geotexile, drainage layer, <br />geomembrane, GCL, and 1 foot thick prepared subgrade. <br />6.2.2. Future Designs <br />The landfill units are designed per CCR Title 27 standards and Subtitle D under the direction of a <br />registered civil engineer. Typical designs include the following: <br />• Liners <br />Future modules will be constructed with a soil operations layer, geotexile, drainage layer, <br />LCRS systems, geomembrane, GCL, and prepared subgrade. <br />Liners will be installed to cover all natural geologic materials where refuse will be <br />placed. <br />• Precipitation and Drainage Control <br />The modules will be designed and constructed to limit ponding, infiltration, inundation, <br />erosion, slope failure, washout, and overtopping. <br />Diversion and drainage facilities will be designed, constructed, and maintained to <br />accommodate the anticipated volume of precipitation and peak flows from surface runoff, <br />prevent surface erosion, control and intercept run-on, and take into account planned final <br />designs, in accordance with applicable regulations. <br />• Seismic Design <br />The units will be designed to withstand the maximum probable earthquake without <br />damage to the structures that control leachate, stormwater, erosion, or gas, in accordance <br />with applicable regulations. <br />• Maximum Height <br />The maximum height of the refuse fill was previously established by the County at 432 <br />feet MSL. <br />Foothill Sanitary Landfill Page 32 of 62 Public Works/Solid Waste <br />JTD County of San Joaquin — Revised 10/6/05 <br />