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,8.B. - Page 124 � 5-Lot Residen�.aI Development December 9, 2010 <br /> � <br /> �� <br /> due to variations in rcaan£all, temperatuze, and othez factors, and gro�ndvvater levels should not be <br /> considered constant. The historic groun.dwa�er levei in the n.earby�ea is approximately 10 to 24 <br /> feet (CGS, 2006). Based on the bleached horizon it is likeiy that the�oundwater at tl�e site has <br /> historica�y been as l�igh as at leas# 18 feet bgs. <br /> Laboratory Tes�ing <br /> As the borings were drilled, soil samples were abtained using a tube-lined barrel sampler(ASTM <br /> D 3550-01 (2007} with shoe sixnilar to D 2937-04). Standard penetration tests were also <br /> performed at selected intervals (ASTM D 1586-0$a). Thirteen tube samples of the soil were <br /> tested for moisture and density (ASTM D 2216-OS and D 2437-04) and an additional four <br /> stand.ard penetration samples were tested for moisture only (ASTM D 2216-OS}. Three sazrzples <br /> was tested fo�- particle size distribution (ASTM D 4318-OS). Co�ies of the laboratory test results <br /> aze included in Appendix B, <br /> 4.0 DATA ANALYSIS <br /> Subsurface Soi� Classif�cation � <br /> Based on the data in the boring Iogs (See Appendix A), the soils are assigned to Site Class D <br /> (stiff soil) as defined by Table 1613A.5.2 o�'the 2007 CBC. <br /> Seisx�aic Design Para�neters <br /> The seismic parametErs presented below comply with Chapter 16 of the California Building <br /> Code (2007 Edition). The values v�rere determined utilizing the USGS Earthquake Hazards <br /> Pzogram Earthquake Crround Motion Para�meter Java Applicatian and the 2003 NEHRP <br /> Recommended Pro�7isions for Seismic Regulations for New Bui�dings and Other Structures. <br /> Summary of Seismic Parame#ers - CBC 2007 <br /> (Site Coordinates 37.4651°N, 122.23�i5°'VL� <br /> Mapped Short Term Spectral Response Parameter- SS 2.062,g <br /> Mapped 1 Second Spectral Response Parameter- Si 0.923g <br /> Site Class: D <br /> Site Coeffcient-Fa 1.0 (SS? 1.25} <br /> Site Coefticient-F� 1.5 {S�> 0.5) <br /> 4 <br />