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MainPlace Mall Transformation Project 12126.001 <br />and 40 feet bgs (CGS, 1997). Based on these findings, there is a potential for <br />liquefaction to occur in the southern portion of the site. <br />Design Consideration: Utilizing appropriate engineering practice in <br />structural design and/or ground improvement techniques, can reduce <br />potential impacts of liquefaction. <br />3.4 Seismically -Induced Settlement <br />Seismically -induced settlement occurs primarily due to loss of strength or <br />stiffness in soils during and shortly after prolonged earthquake events. <br />Based the materials encountered in our borings (LB-1 through LB-8) and review <br />of the boring logs for the previous borings by others (ISE, 1985a), layers of loose <br />to moderately dense sandy soil susceptible to seismically -induced settlement <br />exist in the subsurface across the site. Therefore, there is a potential for effects <br />of localized seismically -induced settlement on the structures and other <br />improvements planned for the site. <br />Design Consideration: Utilizing appropriate engineering practice in <br />structural design and/or ground improvement techniques, can reduce <br />potential impacts of seismically -induced settlement. <br />3.6 Seismically -Induced Lateral Spread <br />Soil liquefaction can result in lateral spreading or flow failure in sloping ground. <br />Since the site is slightly sloped, the potential for lateral spread to occur at the site <br />may exist within the liquefiable zone in the southern portion of the site as shown <br />on Figure 5. <br />Design Consideration: Utilizing appropriate engineering practice in <br />structural design and/or ground improvement techniques, can reduce <br />potential impacts of seismically -induced lateral spread. <br />3.6 Seismically -Induced Landslides <br />As shown on the State of California Seismic Hazard Zones Map for the Orange <br />Quadrangle (CGS, 1998), the site is not located within an area that has been <br />identified by the State of California as being potentially susceptible to seismically - <br />induced landslides (Figure 5, Seismic Hazard Map). In addition, the site is <br />�00 <br />9 / <br />Leighton <br />