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TABLE S.l: SUMMARY OF IMPACTS AND MITIGATION MEASURES(Continued) Environmental Im acct Mitigation Measure Level of Significance After Mitigation J. Geology,Soils and Seismicity(Cont.) J.3. Over the life of the project,soils on the project (a) Should additional cover material be needed, Less than Significant site may bedetermined to be of inadequate alternative daily covers should be examined and supply and/or quality for use as daily, used. intermediate or final cover,and soil import could be required. (SIGNIFICANT) J.4. Seismic shaking could disturb slope stability, (a) The project sponsor should prepare an estimate Less than Significant drainage features,linear integrity,and of the maximum peak ground acceleration that settlement of the landfill,over the life of the would be expected from a small magnitude,but project or after closure. (SIGNIFICANT) local quake. If the potential maximum peak ground acceleration from the local event is greater than that assumed in preliminary design, the final pfoject design analysis should consider modifications needed to meet the factor of safety. K. Hydrology,Geohydrology,and Water Quality K.1. Reconfiguration and relocation of Little Johns None warranted. Creek could alter the flow regime and affect flow velocity,erosion and sedimentation on the site or in the adjacent downstream reach of the stream. (ADVERSE) K.2. The project would rebate the existing 100- (a) The project includes channel reconfiguration and Less than Significant year floodplain,and if inadequate replacement localized flood protection berms to isolate the storage volume or routing of floodflows landfill surfaces from floodwaters. occurred,the project could contribute to downstream flooding or expose the landfill to (b) The project design also includes provision of the effects of the 100-year flood. replacement floodplain area and storage volume (SIGNIFICANT) in an easement along the relocated Little Johns Creek. S.24