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75A - CRAZY HORSE
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06/19/2006
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75A - CRAZY HORSE
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Last modified
1/3/2012 4:45:53 PM
Creation date
6/14/2006 2:17:28 PM
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City Clerk
Doc Type
Agenda Packet
Item #
75A
Date
6/19/2006
Destruction Year
2011
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<br />hazard. Additionally, the surface traces of any active or <br />potentially active faults are not known to pass directly through <br />or extend towards the project site. Therefore, the potential for <br />surface rupture due to faulting occurring beneath the proj ect <br />site during the design life of the proposed project is <br />considered low. <br /> <br />A-2. Strong Seismic Ground shaking? <br /> <br />Less Than Significant Impact <br /> <br />The project site is situated within a highly active seismic <br />region of southern California. A total of 38 active faults have <br />been identified within an approximate 60-mile radius of the <br />project site. The Newport/lnglewood Fault located approximately <br />13 miles south from the City of Santa Ana is considered to be <br />one of the most dominant faults in regard to potential seismic <br />shaking impacts. The project site could potentially be subject <br />to a maximum credible horizontal ground acceleration of O. 30g <br />from a magnitude 6.9 earthquake along the Newport/lnglewood <br />fault zone. A seismic event of this scale could potentially <br />result significant damage to the proposed project. However, the <br />seismic risks at the project site would not be considered <br />significantly different from other areas in the southern <br />California region. Through the City's development review <br />process, the proposed project would be required to prepare <br />geotechnical study to evaluate seismic constraints and to <br />identify design recommendations to minimize potential seismic <br />shaking impacts. Additionally, the proposed project would be <br />subject to the Seismic Safety Standards of the Uniform Building <br />Code. Preparation and implementation of a geotechnical report <br />and compliance with the Uniform Building Code would reduce <br />potential seismic shaking impacts to a level considered less <br />than significant. <br /> <br />A-3. Seismic-related ground failure, including liquefaction? <br /> <br />Less Than Significant Impact <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 is generally known <br />to occur in saturated cohesionless soils at depths shallower <br />than about 50-feet. According to the General Plan Land Use <br />Element EIR, the project site has high to very high potential <br />for liquefaction impacts. Through the City's development review <br />process, the proposed proj ect would be required to prepare a <br />geotechnical study to evaluate liquefaction constraints and to <br />identify design recommendations to minimize potential <br />liquefaction impacts. Additionally, the proposed project would <br /> <br />12 <br /> <br />7fiA~2 <br />
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