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southern ends of the Depot Unless carefully managed, use of onsite construction machinery including graders, bulldozers, earth moves, and backhoes, as well as welding and other construction activities, could result in the ignition of an overland fie onsite or on adjacent properties.The project would also contribute to cumulative impacts associated with the transport,use, and storage of hazardous materials,wildland fires,and interference with emergency response. Findings The County finds that, pursuant to Section 15091(a)(1) of the CEQA Guidelines, changes or alterations have been required in or incorporated into the project, which mitigate or avoid potential impacts associated with accidental release or exposure to hazardous materials, hazardous material sites, and exposure of people or structures to a significant risk of loss,injury, or death involving wildland fires during project construction as identified in the Final EIR.The County further finds that the change or alteration in the project or the requirement to impose the mitigation as a condition of project approval is within the jurisdiction of the County to require, and that this mitigation is appropriate and feasible. Facts in Support of Findings Potential impacts associated with accidental release or exposure to hazardous materials will be less than significant with implementation of Mitigation Measures HAZARDS-la and HAZARDS-Ib, which will require that all contractors transport, store, and handle construction-related hazardous materials utilized in connection with construction at the project site as required by applicable law, a site-specific spill response plan,and a Hazardous Materials Management Plan ("HMMTfor construction of each phase of the project. Potential impacts associated with the siting of a portion of the project over former wastewater discharge ponds associated with the adjacent Cal Suprema Cheese facility operation will be less than significant with implementation of Mitigation Measure HAZARDS-2, which requires that applicant shall ensure the completion of remediation of soils conditions within such ponds under the regulatory oversight of the Regional Water Quality Control Board C RWQCB'�. Potential impacts from the exposure of people or structures to a significant risk of loss,injury, or death involving wildland fires during project construction will be less than significant with implementation of Mitigation Measure HA7ARDS-3, which requires the utilization of certain fie protection measures,including the clearing of dried vegetation in construction areas, equipping construction equipment with a functioning spark arrester, training work and maintenance/operations crews in the use of fie protection equipment. The project's contribution to cumulative impacts from transport, use, and storage of hazardous materials, wildland fees, and interference with emergency response will be less than significant with implementation of Mitigation Measure HAZARDS- 4, which in tum requires the implementation of Mitigation Measures HAZARDS-la, HAZARDS-ib, HAZARDS-2 and HAZARDS-3. 4.1.7 Hydrology and Water Quality Summary of Potential Impacts An evaluation of potential impacts to hydrology and water quality is found in Section 4.10 (Hydrology and Water Quality) of the Draft EIR Wastewater from the crane maintenance pad, the maintenance shop, the diesel fuel storage area, and the fueling and fuel pump areas of the project would be routed through an oil/water separator and then discharged to an evaporation pond. Here, water would be evaporated, and residuals would be disposed of in accordance with county and state, and federal requirements. Potential leaching of water from the evaporation pond into the subsurface would carry with it various pollutants, including fuel- and lubricant-related pollutants,which would degrade groundwater quality. However,the proposed evaporation pond would November 2012 11 Findings of Fact/ Statement of Overriding Considerations