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J. H. KLEINFELDER & ASSOCIATES <br /> File No. S-1008-35 <br /> May 17, 1985 <br /> Page 7 <br /> TABLE I <br /> Estimated Peak Closest <br /> Maximum Maximum Bedrock Acceleration Distance <br /> Credible Probable (g) Based on Maximum of Fault to <br /> Fault Earthquake# Earthquake* Credible Earthquake Site (mi.) <br /> San Andreas 8.3 8.0 0.06 83 <br /> Sierra Nevada 8.3+ 8.0 0.05 140 <br /> Hayward 7.5 7.0 0.07 65 <br /> Calaveras 7.5 7.0 0.08 58 <br /> Midland 7.0 6.5 0.11 37 <br /> Melones 6.5 0.23 16 <br /> Bear Mountains 6.5 0.28 12 <br /> *Richter Magnitude <br /> The information shown on Table I for the Melones and Bear Mountains faults represent <br /> the main fault trace on which the maximum credible earthquake is most likely to occur. <br /> The above analysis indicates there is a potential for peak bedrock accelerations as high <br /> as 0.28g, based on a maximum credible Richter magnitude 6.5 earthquake occurring on the <br /> Bear Mountains fault approximately 12 miles from the site. Based on past history, the <br /> potential for a 6.5 magnitude event on the Bear Mountains fault, is very low. <br /> FIELD E UWRATIONS <br /> The field explorations for this study included drilling and sampling six exploratory <br /> borings. The approximate locations at which the test borings were made are shown on the <br /> Site Plan, Plate II. The borings were drilled using 7-inch diameter hollow stem auger <br />