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SANTA ANA REZONE PROJECT <br /> INITIAL STUDYIMITIGATED NEGATIVE DECLARATION <br /> Less than <br /> Significant <br /> Potentially Impact with Less than <br /> Significant Mitigation Significant <br /> Environmental Issues Impact Incorporated Impact No Impact <br /> f) Directly or indirectly destroy a unique ❑ ❑ ❑ <br /> paleontological resource or site or unique <br /> geologic feature? <br /> Environmental Evaluation <br /> Setting <br /> Seismically induced surface rupture is defined as the physical displacement of surface deposits in <br /> response to an earthquake's seismic waves. Surface rupture is most likely along active faults and <br /> typically occurs during earthquakes of magnitude five or higher. Not all earthquakes result in surface <br /> rupture. <br /> The Alquist-Priolo Earthquake Fault Zoning Act was passed in 1972 to mitigate the hazard of surface <br /> faulting to structures for human occupancy.TheAct's main purpose is to prevent the construction of <br /> buildings used for human occupancy on the surface trace of active faults. The Act requires the State <br /> Geologist to establish regulatory zones, known as Alquist-Priolo Earthquake Fault Zones, around the <br /> surface traces of active faults and to issue appropriate maps. If an active fault is found, a structure for <br /> human occupancy cannot be placed over the trace of the fault and must be set back from the fault <br /> (typically 50 feet). <br /> Would the project: <br /> a) Directly or indirectly cause potential substantial adverse effects, including the risk <br /> of loss, injury or death involving: <br /> i) Rupture of a known earthquake fault, as delineated on the most recent Alquist- <br /> Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area <br /> or based on other substantial evidence of a known fault? Refer to Division of <br /> Mines and Geology Special Publication 42. <br /> Less than significant impact.The project site is not located within an identified Alquist-Priolo <br /> Earthquake Fault Hazard Zone."According to the City General Plan Safety Element, there are no <br /> known fault traces located in the City. The closest fault is the San Joaquin Hills Fault, located <br /> approximately 3.6 miles south; additional faults include El Moderno, located approximately 5.7 miles <br /> to the north, and the Newport Inglewood Fault zone, located approximately 6 miles to the <br /> 29 California Department of Conservation(DOC).2025.Earthquake Zones of Required Investigation.Website: <br /> https:llmaps.conservation.ca.govtcgs/infGrmationwarehouse/egzappl.Accessed February 6,2025. <br /> FCS <br /> 52 ���` Q(�Q <br /> Ordinance No. Iy7w�s'�jJdl#f .,fons ha,,PnInt wm/,ite/Pubr[t1ons5ite/5hared Dowmenta/Publlcati11S/Client{PN-INl/03 2 7/03 27009 7RSMND/e327OD475ente Ana Re,o Pmlect 5MNU.d= <br /> Page 64 of 118 <br />