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Responses to <br />Environmental Checklist <br />For CEQA Compliance <br />E. Create or contribute runoff water which would exceed the capacity of existing or planned <br />storm water drainage systems or provide substantial additional sources of polluted run- <br />off? <br />Less Than Significant Impact <br />The City of Santa Ana implements the goals, objectives and requirements of the Basin Plan and Drainage <br />Area Management Plan through the City's Local Implementation Plan (LIP). All construction contractors <br />and subcontractors are required by contract provisions to comply with the conditions of the City's LIP, <br />including the implementation of appropriate BMPs to control storm water runoff so as to prevent any <br />deterioration of water quality. The proposed project is required comply with the requirements of the State <br />NPDES Permit and to prepare a Water Quality Management Plan (WQMP), which would incorporate <br />BMPs and water quality management practices. With full compliance with the WQMP, project impacts to <br />water quality would be less than significant. <br />B. Substantially deplete groundwater supplies or interfere substantially with groundwater <br />recharge such that there would be a net deficit in aquifer volume or a lowering of the local <br />groundwater table level. <br />No Impact <br />The proposed project would not interfere with ground water recharge because the project area is not <br />located in an area that is known to recharge the ground water system. Additionally, construction <br />operations for the proposed project would not encroach onto the underground water basin. No impacts <br />would occur <br />C. Substantially alter the existing drainage pattern of the site or area, including through the <br />alteration of the course of stream or river, in a manner which would result in substantial <br />erosion or siltation on or off-site? <br />D. Substantially alter the existing drainage pattern of the site or area, including through the <br />alteration of the course of stream or river, or substantially increase the rate or amount of <br />surface runoff in a manner, which would result in flooding on or off-site? <br />Less Than Significant Impact <br />The project site is generally flat and located in an urbanized area currently served by an existing storm <br />drain system. The proposed project will not alter the existing drainage pattern of the site and will connect <br />to the storm drain system as required by the City regulations. As previously noted, erosion or siltation <br />could occur during construction related earthmoving activities. The project would be required to comply <br />with the requirements of the NPDES General Construction permit and project approved SWPPP. During <br />the site grading and construction short-term runoff impacts would be addressed through the incorporation <br />of construction erosion and sediment control and flooding BMPs. Compliance with the permit <br />requirements, the project's construction-related impacts of erosion and/or flooding would less than <br />significant. <br />F. Place housing within a 100-year floodplain, as mapped on a federal Flood Hazard <br />Boundary or Flood Insurance Rate Map or other flood hazard delineation map? <br />G. Place within a 100-year floodplain structures which would impede or redirect flood flows? <br />31 A-45 <br />