2677 3%4 N Main Unit#WCC01 - Plan

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Project No. VP-6214-01 Verizon Wireless — Fisher Floral 2008, SP-117A) summarize procedures for evaluating the earthquake - and liquefaction potential. Liquefaction: The groundwater is deep, but the project site is w CITY OF SANTA ANA Planning and Building Agency Approved FOR PERMIT ISSUANCE uced landslide Master ID: Date: in the seismic earthquake -induced liquefaction zone (CGS California Geologic Survey, Orange quadrangle, released April 15, 1998). However, liquefaction potential is not considered to be a concern, since it is unmanned development and not for human habitation (California Geological Survey's Special Publication 117A, Public Resources Code Section 2621.6 (a) (2) and (e)). Hence, the liquefaction analysis has not been analyzed. Induced Flooding: The site lies far and/or high enough from the coast or large inland body of water to preclude the hazards of tsunami or seiche waves or inundation from the rupture of an up gradient reservoir. Landsliding: The site does not lie near the zone of landsliding and since the site is far enough from steep slopes, landsliding will be unlikely. Field Explorations A power-augered hand boring was drilled to a depth of 11.5 feet as part of our subsurface investigation. Approximate boring location is shown on Plot Plan and Boring Location Map, Plate B-1 (Appendix A). Undisturbed samples were secured for laboratory examination and testing. Disturbed bulk samples, representative of the surficial subgrade materials, were also obtained as well. A continuous record of the materials encountered during the drilling was made by our field representative and is presented on Plate I-1, Log of Test Holes. The lines designating the interface between soil strata on the log of Test Holes represent approximate boundaries. The transition between strata may be gradual. Undisturbed samples were secured at frequent intervals from various locations for laboratory testing. 5