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SUPPLEMENTAL SURFACE EXPLGRATION AND <br />GEOTECHNICAL EiVGINEERING DESIGN STUDY <br />MALLWESTCENTER <br />�� EVERETT MALL WAY AND HOWARD AVENUE <br />EVERETT, WASHINGTON <br />�.. <br />1.0 SUP4�WRY <br />The proposed project construction is feasible with respect to the subsurface <br />+ conditions encountered at the subject site. A brief summary of the project <br />geotechnical r.onsiderations is presented below: <br />'�' � Subsur•face conditions encountered in �ne erplorations generally consisted <br />�.� of uncontrolled fill, up to 4 f�2i in thickn.ss, overlying what appears to <br />be a relic topsoil stratum, very dense silty sands with some gravels and <br />�� stiff to very stiff clayey silts at depth. <br />`� The existing fill soils will not be adequate for foundation support. <br />0 <br />�. <br />a Conventional shallow spread, continuous or exte��ded footings founded on <br />`J native soils or "structural fi71" ma.y be utilized for foundation support <br />� with an allowable bearing pressu�e of 2500 psf (pounds per square foot) <br />� and less than 1 inch of settlement. <br />� � Structural fioors utilizing grade beams and fuundations or cr�wl-space- <br />�- type construction with a raised floor may be considered based on economic <br />conditions. <br />--- Rerouting of the drainage culvert underlying the building location will <br />have to be accomplished prior to construction. <br />- This surtmary is presented for introductory purposes and should be used only in <br />� conjunction with the full text of this report. The project description, site <br />_ conditions and our detailed design recommendations are presented in the text of <br />� this report. The exploration procedure and logs of the explorations are presented <br />in Appendix A. <br />