75A - 1935 EAST SEVENTEENTH - Laserfiche WebLink

Home Browse Search

VI. GEOLOGY/SOILS A-l. Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State geologist for the area or based on other substantial evidence of a known fault? No Impact According to the Seismic Hazard Zone Map, the proj ect site is not located within a current Alquist-Priolo Earthquake Faul t Zone for fault surface rupture hazard. The surface traces of any active or potentially active faults are not known to pass directly through or extend towards the project si te. Therefore, the potential for surface rupture due to faulting occurring beneath the site during the design life of the proposed project is considered low. A-2. Strong Seismic Ground shaking? Less Than Significant Impact The project site is situated within a highly active seismic region of southern California. A total of 38 active faults have been identified within an approximate 60-mile radius of the proj ect site. The Newport/Inglewood Fault located approximately 13 miles south from the City of Santa Ana is considered to be one of the most dominant faults in regard to potential seismic shaking impacts. The project site could potentially be subj ect to a maximum credible horizontal ground acceleration of o. 30g from a magnitude 6.9 earthquake along the Newport/ Inglewood fault zone. A seismic event of this scale could potentially result significant damage to the proposed proj ect. However, the seismic risks at the proj ect site would not be considered significantly different from other areas in the southern California region. The proposed project would be subject to the seismic safety standards of the Uniform Building Code. Compliance with the Uniform Building Code would reduce potential seismic hazard impacts to a level considered less than significant. A-3. Seismic-related ground failure, including liquefaction? Less Than Significant Impact 8 ..E:l!!e LO af3 8 75A-24