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Austin Road Landfill E , sion Project <br /> ENVIRONMENTAL IMPACT MITIGATION MEASURE LEVEL OF <br /> SIGNIFICANCE <br /> AFTER <br /> MITIGATION <br /> contamination if there is a break in the <br /> liner or the leachate collection trenches. <br /> (e)The landfill operator would include <br /> practices and procedures in the Solid <br /> Waste Facilities Permit to comply with AB <br /> 1760. The procedures would describe how <br /> the expanded landfill would salvage all <br /> economically feasible metallic discards. <br /> K.6. Project activities that increase (a) The extraction wells developed as part LS <br /> leachate production from the existing of the CAP shall be maintained and <br /> landfill materials during various phases monitored during Phases V and VI, to be <br /> could alternatively facilitate the employed as needed for the extraction of <br /> remediation of local groundwater,or result any residual contamination by leachate. <br /> in groundwater contamination. <br /> (SIGNIFICANT) (b) The City of Stockton, San Joaquin <br /> County, RWQCB and IWMB should meet <br /> to determine if one or more of the existing <br /> landfill units should be closed prior to <br /> approval of the expansion. <br /> K.7. Surface and/or groundwater (a)Maximum preloaded settlement of the LS <br /> contamination could result if differential existing landfill would provide the <br /> settlement damaged the liner and/or maximum period for settlement,and would <br /> leachate collection system of the vertical take advantage of anticipated <br /> expansion portion of the landfill (Phases V improvements in geosynthetic technology <br /> and VI). (SIGNIFICANT) that would occur over the next 35 years. <br /> (b)The final design for the vertical <br /> expansion would,if necessary, include <br /> additional components in the liner system, <br /> depending on future differential settlement <br /> on the liner system. <br /> (c) The extraction wells developed as part <br /> of the CAP shall be maintained and <br /> monitored during Phases V and VI,to be <br /> employed as needed for the extraction of <br /> any residual contamination by leachate. <br /> (d)A review of the liner and leachate <br /> collection system for the vertical <br /> expansion over the existing landfill shall <br /> be conducted by the appropriate <br /> responsible agencies upon completion of <br /> the final desi2 drawings. <br /> 28 <br />