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Design Maps Summary Report <br />Building Code Reference Document <br />Site Coordinates <br />Site Soil Classification <br />Risk Category <br />User–Specified Input <br />2009 NEHRP Recommended Seismic Provisions <br />(which utilizes USGS hazard data available in 2008) <br />37.64269°N, 121.87804°W <br />Site Class D – “Stiff Soil” <br />I/II/III <br />USGS–Provided Output <br />SS =2.141 g SMS =2.141 g SDS =1.427 g <br />S1 =0.818 g SM1 =1.226 g SD1 =0.818 g <br />For information on how the SS and S1 values above have been calculated from probabilistic (risk-targeted) and <br />deterministic ground motions in the direction of maximum horizontal response, please view the detailed report. <br />For PGAM , TL, CRS, and CR1 values, please view the detailed report. <br />Although this information is a product of the U.S. Geological Survey, we provide no warranty, expressed or implied, as to the accuracy of <br />the data contained therein. This tool is not a substitute for technical subject-matter knowledge.