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G. Place housing within a 100-year flood plain, as mapped on a Federal Flood Hazard Boundary or flood Insurance Rate Map or other flood hazard delineation map? Less Than Significant Impact. According to the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) number, 06059C0256H dated February 18, 2004, the project site is located in Zone X. This area is in the 500-year floodplain (0.2% annual chance flood) and is protected from the 1 percent annual chance flood event by dikes, levees, or other structure. Furthermore, as mentioned in the City of Santa Ana General Plan Public Safety Element, the City has two major drainage courses, the Santiago Creek and the Santa Ana River, with both presenting high potential for significant flooding. The Santa Ana River has a history of overflowing its banks and flooding its surrounding area. There have been fourteen incidents of flooding, most recently as 1980. The potential also exists for downstream flooding throughout the Santa Ana River Basin resulting from the failure of Prado Dam, located approximately 20 miles northeast of the proposed project site. To assure the acceptable levels of risk to people and property from flooding, the City of Santa Ana has established flood plain management regulations in flood prone areas. Compliance with the City of Santa Ana's flood plain management regulations would result in less than significant impacts. Furthermore, no housing is proposed with the implementation of this project. No significant impacts would occur and no mitigation measures are necessary. H. Place housing within a 100-year floodplain structures which would impede or redirect flood flows? No Impact. As stated above, the project site is not located in the 100-year flood zone. Recent improvements to the Prado Dam have decreased the chance of inundation by a dam failure in the area of the project site. No housing is proposed with the implementation of this project. Therefore, no significant impacts would occur and no mitigation measures are necessary. I. Expose people or structures to a significant risk of loss, injury or death involving flooding, including flooding as a result of the failure of a levee or dam? Less Than Significant Impact. The project site is located within the Prado Dam Inundation Area according to the City of Santa Ana General Plan Public Safety Element. Compliance with the City of Santa Ana's flood plain management regulations would result in less than significant impacts. Refer to response in Hydrology and Water Quality (G), above. J. Inundation by seiche, tsunami, or mudflow? ' No Impact. There are no large bodies of open water located on or near the proposed project site that could result in seiche or tsunami hazards. Hazards ' associated with seiche, tsunamis, and mudflow are not expected to affect the proposed project. ' S1 Initial Study/Mitigated Negative Declaration July 2008 Harbor Medical and Retail Center 75A 84