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6.0 CONCLUSIONS AND RECOMMENDATIONS <br />Based on the results of our review, field exploration, laboratory testing and geotechnical <br />analysis, the proposed development is considered feasible from a geotechnical standpoint. The <br />recommendations contained in this report should be taken into the design, construction, and <br />grading considerations. The recommendations are contingent upon all grading and foundation <br />construction activities being monitored by the geotechnical engineer of record. The Grading <br />Guide Specifications, included as Appendix D, should be considered part of this report, and <br />should be incorporated into the project specifications. The contractor and/or owner of the <br />development should bring to the attention of the geotechnical engineer any conditions that differ <br />from those stated in this report, or which may be detrimental for the development. <br />6.1 Seismic Design Considerations <br />The subject site is located in an area which is subject to strong ground motions due to <br />earl:hquakes. The performance of a site specific seismic hazards analysis was beyond the scope <br />of this investigation. However, numerous faults capable of producing significant ground motions <br />are located near the subject site. Due to economic considerations, it is not generally considered <br />reasonable to design a structure that is not susceptible to earthquake damage. Therefore, <br />significant damage to structures may be unavoidable during large earthquakes. The proposed <br />structures should, however, be designed to resist structural collapse and thereby provide <br />reasonable protection from serious injury, catastrophic property damage and loss of life. <br />Faultinq and Seismicitv <br />Research of available maps indicates that the subject site is not located within an AIquist-Priolo <br />Earthquake Fault Zone. Therefore, the possibility of significant fault rupture on the site is <br />considered to be low. <br />Seismic Design Parameters <br />Beginning January 1, 2014, the 2013 CBC was adopted by all municipalities within Southern <br />California. The CBC provides procedures for earthquake resistant structural design that include <br />considerations for on-site soil conditions, occupancy, and the configuration of the structure <br />including the structural system and height. The seismic design parameters presented below are <br />based on the soil profile and the proximity of known faults with respect to the subject site. <br />The 2013 CBC Seismic Design Parameters have been generated using U.S. Seismic Design Maps, <br />a web-based software application developed by the United States Geological Survey. This <br />software application, available at the USGS web site, calculates seismic design parameters in <br />accordance with the 2013 CBC, utilizing a database of deterministic site accelerations at 0.01 <br />degree intervals. The table below is a compilation of the data provided by the USGS application. <br />A copy of the output generated from this program is included in Appendix E of this report. A <br />copy of the Design Response Spectrum, as generated by the USGS application is also included in <br />Appendix E. Based on this output, the following parameters may be utilized for the subject site: <br />SoCalGeo <br />4 SOUTHERN G&M Convenience Store # 72 - Santa Ana, CA <br />CALIFORNIA Project No. 16G123-1R <br />GEOTECHNICAL Page 10