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Draft Supplemental Environmental Impact Report Page II-24 <br /> Forward Inc.Landfill 2014 Expansion Project <br /> occurs in the liner or the leachate collection system. <br /> • Landfill operations and maintenance are designed to identify and correct any <br /> failures in the leachate collection system. <br /> • In addition, the RWQCB will review and must approve the updated JTD, the <br /> leachate collection system, and associated monitoring, and could require <br /> changes to the planned leachate collection system or monitoring. The <br /> mitigation measures listed have been successfully used at the existing <br /> Forward Landfill and the liner and LCRS have been and will be designed <br /> and stamped by Professional Engineers registered in the State of California. <br /> In addition,both the RWQCB and CalRecycle will review the liner and LCRS <br /> design as part of issuance of WDRs and the SWFP, respectively. <br /> F.4. If not properly Proposed as Part of the Project: Less than <br /> managed,the volume of The proposed measures to address concerns about additional leachate Significant <br /> leachate generated from generation as a result of the expanded landfill will be addressed in the JTD <br /> the expansion areas with the presentation of the updated EPA HELP model results based on the <br /> could result in potential projected volumes of refuse, a historical analyses of actual leachate <br /> groundwater impacts. generation volumes (which were at significantly higher volumes than the <br /> model predicted for peak year rainfall) and the description of the leachate <br /> collection system designed to meet the maximum probable leachate <br /> generated. Engineering control systems (leachate collection system, drainage <br /> control, groundwater and gas controls), monitoring programs, and <br /> institutional controls will be similar to the successful systems that have been <br /> presented in the JTD for the existing Forward Landfill, which has been <br /> reviewed by the RWQCB. Reporting on leachate generation volume and <br /> quality is a requirement of the RWQCB-stipulated progress reporting <br /> through the various proposed landfilling phases. <br /> • The landfill cell anchor trenches would be elevated two to three feet above <br /> the surrounding land to minimize the possibility of water from major storm <br /> events draining into the cells and adding to the volume of leachate. <br /> rF—.5.Surface and/or Proposed as Part of the Project: Less than <br /> groundwater rim <br /> acts A liner and LCRS would be constructed at the interface of the expansion cells Significant <br />