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B-4 SPT_Liquefaction_v2.2.1.xlsm 1/29/2014 THL <br /> APPROXIMATE Factor of Safety against Liquefaction <br /> SUBSURFACE > <br /> PROFILE 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 —1.5 <br /> 17' <br /> 10 <br /> HF <br /> ALN o <br /> -2.5' <br /> as <br /> w <br /> c <br /> -10 <br /> d <br /> HA w <br /> 19.5' -20 <br /> HB <br /> -26' <br /> -30 <br /> QPNF <br /> -40 <br /> Bottom of Boring ---� <br /> at-39.5 feet ■Youd and others(2001) •ldriss&Boulanger(2006) •Cetin and others(2004) <br /> NOTES 14th St& 16th St- Marina District <br /> 1. See main text for references. Port of Everett <br /> 2.The liquefaction resistance of a soil is based on its density and fines Everett, Washington <br /> content. We used the results of the standard penetration testing to LIQUEFACTION ANALYSES, BORING B-4 <br /> estimate the density,and the results of selected laboratory tests to estimate 200-YEAR DESIGN GROUND MOTION <br /> the fines content. <br /> 3. We considered a seismic event with a 200-year return period for the M =6.5, PGA= 0.25 <br /> liquefaction analysis.The moment magnitude is 6.5 and the peak ground January 2014 21-1-21761-003 <br /> acceleration is 0.25g.See main text for more information. <br /> SHANNON &WILSON, INC. FIG. C-4 <br /> Geotechnical and Environmental Consultants <br />