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Project No. D-3885-06 <br />Christ Our Savior Catholic Parish <br />period of 975 years, and 2o/o probability ol exceedance in 50 years i.e. retum period of <br />2,475 years, are calculated as 0.42579,0.5603g and 0.78529 respectively. <br />Secondarv Effects: <br />These potential secondary effects are summarized below: <br />Induced Liquefaction: Earthquake induced liquefaction is a possible hazard at this site. <br />Seismically induced settlement of saturated as well as dry soils is further discussed in <br />later sections of this report. <br />Induced Landsliding: The site lies far enough from steep or high upland slopes to <br />preclude any damage from induced landslides. <br />Lateral Spreading: The site has a very gentle relief and there are no significant slopes or <br />free-face conditions coinciding with the elevation of potentially liquefiable layers. <br />Therefore, lateral spreading is not considered to be a potential seisrnic hazard for the <br />proposed development. <br />Induced Settlement: Due to the scattered sequences of unconsolidated alluvial deposits <br />beneath the property, as well as liquefaction potential, there is a seismically induced <br />settlement which needs to be considered. This is further discussed in later sections of this <br />report. <br />7 <br />u <br />I <br />I <br />I <br />T <br />I <br />I <br />I <br />T <br />I <br />I <br />I <br />I <br />t <br />I <br />I <br />t <br />I <br />u <br />In addition to possible strong ground motions on the property, other secondary effects of <br />earthquake-induced liquefaction, earthquake-induced Iandsliding, lateraI spreading, <br />settlement, flooding and subsidence were considered. Guidelines for evaluating and <br />mitigation seismic hazards in California (CGS, 2008, SP-117A) summarize procedures <br />for evaluating the earthquake-induced landslide and Iiquefaction potential.