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GeoTest Services, Inc.—Revision 1 April 10, 2020 <br /> Kikuchi Retaining Wall, Everett, Washington Project No. 20-0344 <br /> Port Gardner 0-„, Ns__ <br /> \ I <br /> . , _ \ I <br /> Bav 4.,- .. <br /> ,t iiit 1/ �., \ K '. <br /> .-- iiiiimr-igu. f <br /> 0 <br /> • <br /> rr VEverett 4111.r ..iik J- <br /> $$ ufu ..�i ) c ,. <br /> tf/t//u,!,.r...a u <br /> pm:mil:NI:A <br /> .ruruf,rt„frr. 1 O <br /> i'( , avia A il..., <br /> 1�1/N..rf, �_v:gm:my:5 ,\IWill <br /> Subject Property i,rfwr,.f,.fri�l��it '1 - ' <br /> I. <br /> 1j� infra//. , r MO - Ail <br /> *gar /u ' 1 / <br /> "r c VNIN -I- 41 // •VIL.\ . - . 1 <br /> _ _1 -- ita I o ell .Oil'';, <br /> 1 l <br /> r• f I <br /> Image 5.Screenshot from Liquefaction Susceptibility of Snohomish County Washington,Washington State Department of Natural <br /> Resources,Palmer,Stephen,et al.,September 2004 <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Based on the evaluation of the data collected during this investigation, it is GeoTest's opinion <br /> that the subsurface conditions at the site are suitable for the proposed development, provided <br /> the recommendations contained herein are incorporated into the project design. <br /> Subsurface explorations exposed in this study generally encountered approximately 0.75 feet of <br /> dark brown silty, very gravelly sandy topsoil before encountering native transitional beds <br /> composed of sandy, silt and clay. The new retaining wall should be supported on competent, <br /> native, transitional bed deposits. Depending on the final grades, some over excavation may be <br /> required in order to remove, loose, near-surface soils and reveal competent native soils. Over <br /> excavations may be restored to final grade with compacted structural fill. Further <br /> recommendations regarding the placement and compaction of structural fill can be found in the <br /> Fill and Compaction section of this report. <br /> Fill and Compaction <br /> Structural fill used to obtain final elevations for footings must be properly placed and compacted. <br /> In most cases, suitable, non-organic, predominantly granular soil may be used for fill material <br /> 13 <br />