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2. EXECUTIVE SUMMARY TABLE 2-1 (Continued) SUMMARY OF IMPACTS AND MITTGATION MEASURES LEVEL OF ENVIRONMENTAL IMPACT MITIGATION MEASURES SIGNIFICANCE AFTER MITIGATION 4.11.2 During excavation,grading,and construction activities 4.11.2 The project applicant shall ensure that all contractors and Less-than-Significant of the proposed facilities,it is anticipated that limited employees immediately control the source of any leak and quantities of miscellaneous hazardous substances,such immediately contain any spill utilizing appropriate spill as gasoline,diesel fuel,hydraulic fluid,solvents,oils, containment and countermeasures. If required by any etc.would be brought onto the site. In addition,the regulatory agency,contaminated media shall be collected and proposed project operations will include the use of fuels disposed of at an off-site facility approved to accept such media. and other hazardous materials. As with any liquid and In addition,all precautions required by the RWQCB issued solid,during handling and transfer from one container to NPDES construction activity storm water permits would be another,the potential for an accidental release exists. taken to ensure that no hazardous materials enter any nearby Depending on the relative hazard of the material,if a waterways. spill were to occur of significant quantity,the accidental release could pose both a hazard to construction employees as well as the environment. This would be a potentially significant impact. 4.11.3 The Proposed Project would involve the installation and No mitigation is required. use of above-ground fuel storage tanks,and the storage and use of hazardous materials. This would be a less- than-significant impact. 4.11.4 Exposure of the existing and future residents near the 4.11.4 The silt ponds and the mining pits proposed as a part of the Less-than-Significant Proposed Project area to potentially high levels of project should be properly designed and maintained so that they nuisance and disease vectoring mosquitoes from the do not breed mosquitoes. The design and maintenance of the addition of silt ponds and mining pits that could contain basins should be done in consultation with the San Joaquin storm water on the Proposed Project site would be a County Mosquito Abatement District and the East Side significant health hazard. Mosquitoes are vectors of Mosquito Abatement District in Stanislaus County. diseases such as malaria,encephalitis,west nile virus, and canine heartworm disease. This would be a potentially significant impact. RMC Page Vemalis Quarry Mining and Red;nna0on Project 2-34 ESA/201015 Admi,nam6w Dtaa EIR Mach 2004