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(4) The operator would remove hazardous materials spotted during delivery, thus minimizing the potential for leachate contamination if there is a break in the liner or the leachate collection trenches. (5) The landfill operator would include practices and procedures in the Solid Waste Facilities Permit to comply with AB 1760. The procedures would describe how the expanded landfill would salvage all economically feasible metallic discards. (6) The extraction wells developed as part of the CAP shall be maintained and monitored during Phases V and VI and are to be employed as needed for the extraction of any residual contamination by leachate. (7) The operator, San Joaquin County, RWQCB, and IWMB shall meet to determine if one or more of the existing landfill units should be closed prior to initiating the expansion. (8) Maximum preloaded settlement of the existing landfill would provide the maximum period for settlement and would take advantage of anticipated improvements in geosynthetic technology that would occur over the next 35 years. (9) The final design for the vertical expansion would, if necessary, include additional components in the liner system, depending on future differential settlement on the liner system. (10)The extraction wells developed as part of the CAP shall be maintained and monitored during Phases V and Vi and are to be employed as needed for the extraction of any residual contamination by leachate. (11)A review of the liner and leachate collection system for the vertical expansion over the existing landfill shall be conducted by the appropriate responsible agencies upon completion of the final design drawings. (12)The implementation of the current RWQCB Order and the recommendation made in the April 1999 CAP shall be continued and completed. The new data to be collected should address the potential impacts to the local supply wells. The siting of the new extraction wells can be modified as appropriate to minimize impact to supply wells. Additional off-gassing from the air stripper will require more frequent change out of the activated carbon vessels. (13)The operator shall continue the City of Stockton's program to test all known water supply wells within the area of the mapped and protected groundwater plume, and where detectable VOC's are reported, bottled water shall be supplied (see Final,EIR K.5, K.6, K.7, K.8, and K.10, Impacts and Mitigations). f. SEISMIC: The project sponsor will comply with the requirements of the California Code of Regulations (CCR), Title 27. The CIWMB will receive all documentation relating to slope and foundation studies and design (see Final SEIR J.4, Impact and Mitigation). g. LANDFILL GAS: In order to reduce the potential for explosion hazards from landfill gas, the following measures shall be implemented: (1) A landfill gas monitoring system shall be installed around the landfill. (2) The existing gas extraction system shall continue to operate.