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City of Santa Ana Emergency Operations Plan <br />Part I Basic Plan <br />No active, potentially active, or inactive earthquake faults are known to exist in Santa Ana; however, the San <br />Joaquin Hills Fault runs along the 405 Freeway just outside the southern border of the City. The City is also <br />located in close proximity to the Newport -Inglewood Fault Zone and the Whittier -Elsinore Fault Zone, two major <br />faults in the Southern California region. The San Andreas Fault, the largest fault in California, is less than 50 miles <br />from Santa Ana and would affect the City should a major earthquake occur. The south-central portions of the <br />City and areas with lower elevations along the Santa Ana River may be subject to liquefaction in the event of a <br />major earthquake. s <br />Figure 14 Orange County Earthquake Fault Zones <br />n Orange County <br />! ` Fault Zones <br />LTA N\ <br />n, Mqp a <br />FR <br />9 <br />c <br />'G x° <br />o� <br />v�o\ 90 <br />T <br />m <br />9G�T OC <br />,I�e BAN CA PA o <br />l <br />Oyu Fjb�O y,. m�a <br />fi <br />Legend <br />� N�van FmiAa <br />O Gb 9w tlm� \ s s <br />o a w,w \ <br />Notes on Figure 14: The fault touching the right margin of the map is the Elsinore Fault but is incorrectly labeled the <br />Whittier Fault. The Whittier Fault lies at the top center where it is correctly labeled. The San Joaquin Hills Fault does <br />not appear on this map but runs along the 405 Freeway south of the City border. <br />'GP Land Use Element <br />14 <br />