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Subsurface Fxploration and <br /> 20?6 Grand�lvenue Geotechnical Engineering Report <br /> Evereu lUashineron Design Recummendntions ' <br /> III. DESIGti RECOMDTE�IDATIONS <br /> 6A INTRODUCTION <br /> Our exploration indicates that from a geotecimical standpoint, the sire is suitable for the <br /> proposed condominium preject. Suitable foundation bearing soils were encountered near <br /> proposed design ftoor elevatinn within the eastern portion of the building. However, suitable <br /> bearing soils were encountered at a depth of 1� to 20 feet within t6e western end of the <br /> building. We anticipate thac conventional shallow spread foo[ings could be used within the <br /> eastern half of the buil.ding and a deeper pile foundation utilized for the western portion of the <br /> building. A top of slope building setback of 8 feet should be maintained from the top of the <br /> west-facing sreep slope. <br /> Due to existing topography, desired finish floor elevation, and proximiry to property line, and <br /> rights of �vay, temporary shoring of excavations wil( be necessary. AESI should review <br /> completed desien plans so that ���e may provide shoring recommendations specific to the site. <br /> 7.0 SITE PREPARATION <br /> Site preparation ��f ihe r:anned buildine and driveway areas should include removal of all <br /> exis�ing svucmres, utilities, debris, and any other deleterious material. Areas where loose <br /> surficial soils exist due to grubbine operations should be considered as fill to the depth of <br /> discurbauce and treated as subsequently recommended for strucmral fill placement. <br /> For structural locations (i.e., foundation and slab-on-grade floors), excavation should extend to <br /> a depth necessary to expose medium dense to dense, natural soils. Suitable bearine soil�. <br /> should be encountered within the eastern half of the building following excavation to desired <br /> grades. �1'ithin the slab-on-grade earage floor area, the exposed soil subgrade should be <br /> compacted to a minimum of 92 percer.t of ASTb1:D 1577. <br /> Due to thc 15- to '_'0-foot depth to bearing sediments and the close prosuniry of the steep slope, <br /> we reconunend the use of a deep pile foundation for the western end of the building. Site <br /> preparation for a pile foundation should consist of excavating, to desired toundation floor <br /> grades. <br /> All excavated material trom the foundation exca�ations should be removed from the site and <br /> not placed o�'er the slope to�rards the ��est. <br /> -�' <br /> J�utc /9, 3000 ASSOClATED EaRTFI SGENCES, lNC. <br /> i,,sw-KE�3,�c, -�.o�,�6,n_ «�n PAGE�3�FL5 Page7 <br />