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Our Job 81-20-00 Page 7 <br />Gror:nd Acceleration <br />(g- acgeleration of gravit, <br />Once Per <br />50 Years Probabili_ty <br />88% <br />64eo <br />40% <br />?2% <br />t0% <br />SOI L EXCAVATION CHARACTERI STI CS <br />Rippability. A11 near-surface, oD-site soil can <br />be easily excavated with scraper-type equipment with no <br />ripping. Ground water, however, may be encountered belott <br />six feet of the existing ground surface, and special <br />equipment or dewatering may be necessary for deep excavations. <br />Trenching. Excavation of utility and footing <br />trenches can be accomplished with a conventional trenching <br />rnachine or a backhoe. Trench walls will be prone to caving <br />0g <br />5g <br />0g <br />5g <br />0g <br />0.1 <br />0.1 <br />0.2 <br />a.2 <br />0.3 <br />Conclusions pertaining to the probability, intensity <br />and type of shaking are presented in Section 1.30 of this report. <br />CONCLUS I ONS <br />1.10 FEASIBILITY <br />It is our opinion that it is geotechnically <br />feasible and practical to develop the property essentially <br />as assumed under "Proposed Development" provided the recom- <br />nendations presented in this report are followed in the <br />design and construction of t.he improvements. <br />I .20 <br />1.21 <br />1.22