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(b)Additional measures described in Section III:G, Air Quality, Mitigation Measure G.1, <br /> would also minimize dust impacts. <br /> Facts in Support of the Finding: <br /> The potential for contamination of surface water from erosion or spills is discussed in Section <br /> HIR of the EIR. The measures above are designed to mitigate contamination of surface water,as <br /> well as to control fugitive dust. <br /> d.Potential Groundwater Contamination <br /> Potential Significant Impact(K5): <br /> I <br /> Groundwater contamination would result if the liner or leachate collection system for the I <br /> !` expansion failed. <br /> I. <br /> Finding: <br /> i <br /> Based upon the analysis in the EIR,the landfill liner, leachate collection system, leak detection <br /> system,removal of hazardous materials identified during delivery,and compliance with the Solid <br /> !; Waste Facilities Permit and AB 1760 regarding salvage of all economically feasible metallic <br /> discards will make potential contamination of groundwater due to liner or leachate collection <br /> �{ system failure less than significant. <br /> .I <br /> The following mitigation measures will mitigate these impacts to below a level of significance. :I <br /> f.E <br /> Mitigation Measures (Impact K 5): <br /> ,r <br /> (a) Landfill design includes a separation between the liner and groundwater that meets j <br /> all regulatory standards. ? <br /> (b) The liner and leachate collection systemsfor the expansion have been designed to <br /> meet or exceed the regulatory requirements. l <br /> (c) The project includes a leak detection system, a series of secondary collection <br /> trenches beneath the liner and directly under the leachate collection trenches. ;€ <br /> ! <br /> (d) The operator would remove hazardous materials spotted during delivery, thus E <br /> I <br /> minimizing the potential for leachate contamination if there is a break in the liner or the <br /> leachate collection trenches. I <br /> (e) The landfill operator would include practices and procedures in the Solid Waste <br /> Facilities Permit to comply with AB 1760. The procedures would describe how the <br /> expanded landfill would salvage all economicallyfeasible metallic discards. I <br /> i <br /> 45 <br />