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Draft Supplemental Environmental Impact Report Page II-29 <br /> Forward Inc. Landfill 2018 Expansion Project <br /> waste can be disposed int at Unit,as required by the RWQCB; <br /> • If any modifications to the leachate collection system and associated <br /> monitoring are required by the RWQCB,the landfill operator shall <br /> implement those changes; <br /> • The liner system will be overlain by a protective operations layer consisting <br /> of a one-foot thickness of soil and a one-foot thick gravel layer that serves as <br /> the leachate collection layer.This two-foot layer will serve to protect the <br /> liner system from sharp or jagged materials in the waste. <br /> • The operator will remove any hazardous materials spotted during delivery, <br /> thus minimizing the potential for leachate impacts to groundwater if a break <br /> occurs in the liner or the leachate collection system. <br /> • Landfill operations and maintenance are designed with appropriate <br /> schedules to identify and correct any failures in the leachate collection <br /> system. <br /> • In addition,the RWQCB will review the updated Joint Technical Document <br /> (JTD),the leachate collection system, and associated monitoring, and could <br /> require changes to the planned leachate collection system or monitoring. <br /> Implementation of the described protection measures and long-term operations <br /> and maintenance procedures, obtaining new RWQCB Waste Discharge <br /> Requirements, and compliance with RWQCB orders would reduce the impact to a <br /> less-than-significant level <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 with <br /> the expansion areas could the presentation of the updated EPA HELP model results based on the <br /> result in potential projected volumes of refuse,a historical analyses of actual leachate generation <br /> groundwater impacts. volumes (which were at significantly higher volumes than the model predicted <br />