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City of Santa Ana <br />Environmental Checklist <br />of these may use, handle, store, and /or transport hazardous materials. However, past, present, and <br />foreseeable future projects trust comply with all existing hazardous material regulations in place <br />through the local, state, and federal government. Furthermore, since the proposed project involves <br />development of a school, present and foreseeable future projects within 0.25 mile of the project site <br />would be required per CEQA Guidelines to consider the impacts of emitting hazardous emissions or <br />handling hazardous or acutely hazardous materials, substances or waste near a proposed or existing <br />school. These regulations are in place to reduce the potential of accidental releases, spill, or <br />explosions of hazardous materials and to minimize the environmental and public health impact <br />should one occur. Although projects cannot completely eliminate the probability associated with an <br />accidental release, explosion, or spill, the existing regulations reduce the overall probability and <br />minimize the impacts during a release. Therefore, past, present, and foreseeable future project are <br />not cumulatively considerable. <br />Some types of hazardous materials would be used during construction of the proposed project and <br />hazardous materials would be needed for fueling and servicing construction equipment on the site <br />on a temporary basis. Operation of the proposed residential and school activities generally use <br />hazardous materials including solvents, cleaning agents, paints, pesticides, batteries, and aerosol <br />cans. Although the project would utilize common types of hazardous materials, normal routine use <br />of these products would not result in a significant hazard to residents or workers in the vicinity of <br />the project. As discussed in Section Vill, "Hazards and Hazardous Materials," all impacts resulting <br />from the proposed project related to hazards and hazardous materials would be less than <br />significant. Thus, hazards and hazardous materials impacts related to the proposed project would be <br />less than significant and would not be cumulatively considerable. <br />Hydrology and Water Quality <br />The geographic scope for cumulative impacts on hydrology and water quality includes the Santa Ana <br />River watershed and the Coastal Plain of Orange County Groundwater Basin. The cumulative setting <br />for hydrology and water quality includes all the development and infrastructure that have occurred <br />in the City of Santa Ana in the past and would be expected to occur in the future, including the <br />projects listed in Table 3 -32. Implementation of the proposed project has the potential to contribute <br />to cumulative impacts on hydrology and water quality through the generation of stormwater runoff <br />during construction and operation. The majority of the past, present, and reasonably foreseeable <br />future projects would have associated construction impacts with the potential to result in discharge <br />of stormwater to surface waters, either directly or, more commonly, via a local stormwater <br />collection system. All of these projects have been and would be required to comply with <br />construction stormwater requirements of the local jurisdiction and compliance with the general <br />NPDES permit for construction stormwater discharges. Furthermore, the BMPs and project design <br />features identified in Response IX(a) would minimize runoff and erosion impacts to hydrology and <br />water quality resulting from development of the proposed project. As discussed in Section IX, <br />"Hydrology and Water Quality," all impacts resulting from the proposed project related to hydrology <br />and water quality would be less than significant. Thus, hydrology and water quality impacts related <br />to the proposed project would be less than significant and would not be cumulatively considerable. <br />Noise <br />The cumulative study area for noise includes all the projects listed on the cumulative projects list <br />(Table 3 -32). Increases in noise in the vicinity of sensitive uses would occur during construction of <br />the proposed project. Simultaneous construction of the proposed projects and related projects in the <br />The Academy Charter High School 3 -114 June 2012 <br />Initial Study /Mitigated Negative Declaration ICF 00914.11 <br />l : eI1 <br />