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<br />Euclid Street Zone Change/Subdivision ER 2005-138 <br /> <br />The project site is situated within a highly active seismic <br />region of southern California. A total of 38 active faults <br />have been identified wi thin an approximate 60-mile radius <br />of the proj ect site. The Newport/Inglewood Fault located <br />approximately 13 miles south from the City of Santa Ana is <br />considered to be one of the most dominant faults in regard <br />to potential seismic shaking impacts. The project site <br />could potentially be subj ect to a maximum credible <br />horizontal ground acceleration of O. 30g from a magnitude <br />6.9 earthquake along the Newport/lnglewood fault zone. A <br />seismic event of this scale could potentially result <br />significant damage to the proposed proj ect. However, the <br />seismic risks at the proj ect site would not be considered <br />significantly different from other areas in the southern <br />California region. The proposed proj ect would be required <br />to prepare a geotechnical report that addresses the seismic <br />constraints on the project site and the building load <br />requirements of the project. Additionally, the proposed <br />project would be subject to the seismic safety standards of <br />the Uniform Building Code. Preparation of the geotechnical <br />report and compliance with the Uniform Building Code would <br />reduce potential seismic shaking impacts to a level <br />considered less than significant. <br /> <br />Mitigation Measure <br /> <br />· Prior to the issuance of grading permits, the proj ect <br />developer shall submit a site specific geotechnical <br />report that addresses the seismic constraints on the <br />project site and if needed identify design <br />recommendations to ensure the geotechnical stability <br />of the project site. <br /> <br />A-3. Seismic-related ground failure, including <br />liquefaction? <br /> <br />Potentially Significant Impact Unless Mitigation <br />Incorporated <br /> <br />Soil liquefaction occurs when loose soil deposits below the <br />water table are subjected to large ground accelerations <br />generated from seismic events. Liquefaction lS generally <br />known to occur in saturated cohesionless soils at depths <br />shallower than about 50-feet. According to the City's <br />General Plan EIR, the potential for liquefaction impacts <br />would be high to very high. However, it should be noted <br /> <br />10 <br /> <br />75A-29 <br />