FULL PACKET_2013-09-16 - Laserfiche WebLink

Home Browse Search

City of Santa Ana Environmental Checklist for the Santa Ana Regime. Hence, Implementation of the project in compliance with existing regulations would result in less -than- significant impacts related to water quality with implementation of Mitigation Measure HYD -1. g. Place housing within a 100 yearflood hazard area, as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map? Less - than - Significant Impact. The project site is not located within any type of Flood zone (including a 100 -year flood hazard area) per Flood Insurance Rate Map No, 06059CO257j, December 3, 2009. Therefore, the project does not place housing within a 100 -year flood hazard area, and no impacts would occur. h. Place within a 100 year•flood hazard area structures that would Impede or redirectflood flows? No Impact. As discussed in 11g, the project site is not located within a 100 -year flood hazard area as mapped on the Flood Insurance Rate Map for the area. Further, the proposed religious development is located within a developed urban area and would not be located in an area that would impede of- redirect flood flows. No impacts related to 100 -year flood hazard areas would occur with implementation of the proposed project. f. Expose people or• structures to a sfgniffcant risk of loss, injury, or death involving flooding, looding, including flooding as a result of the failure of a levee or darn? Less - than - Significant Impact. As described previously, the proposed project is not located within a flood zone. However, it is located 0.5 mile east of the Santa Ana River, which (like large portions of Santa Ana) is mapped (in Exhibit 4 of the Public Safety Element of the City's General Plan) as within the inundation zone of a significant failure of the Prado Dam that is located approximately 19 miles upstream. Flood waters from the dam could travel down the Santa Ana River toward the Pacific Ocean. in the event of a large -scale failure of the Prado Dam, flood waters would take approximately 6 hours to travel the distance to the project vicinity, approximately 7.5 hours for the flood waters to peak at an elevation of 96 NAVD, which is approximately four feet over the existing Santa Ana River bank height in the project vicinity, which is 0.5 mile to the east (CCCD 2011). Implementation of the proposed project will redevelop the existing uses on the project site. The project area has no history of dam inundation. Thus, dam inundation at the project site would have a very limited potential of occurrence. Should a failure of the Prado Dam occur, the appropriate emergency responders would notify downstream areas that could be inundated. Because the project site is located approximately 19 miles from Prado Dam and flood waters would take approximately six hours to the project area, the City's existing emergency response system would reduce impacts in the unlikely event of a Prado Dam failure. As a result, the proposed project would not substantially expose people or structures to a significant risk of loss, injury, or death involving flooding as a result of the failure of a levee or dam. J. Contribute to imtndatlon by selche, tsunami, or mudflow? No Impact. The project site is located over 10 miles away from the Pacific Ocean, and is generally considered too far away to be subject to a tsunami. Additionally, the County of Orange Emergency Operations Plan map of inundation zones along the coastline shows that the project site is not located within an area anticipated to he at risk of a tsunami (County of Orange 2005). Therefore, the project would not result in impacts related to potential tsunami inundation. The Bat Nha Buddhist Meditation Center 3 57 June 2013 Initial Study /Mitigated Negative Declaration ICr 00215.12 31C-110