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GEOTECHNICAL ENGINEERING STUDY <br /> Mr. Arthur Skotdal <br /> __� c!o Gykeman Architects E-6225 <br /> July 27, 1993 Page 2 <br /> IS TE GUNDITIONS <br /> Surface <br /> The subject site is located adjacent to the northeast intersection of Colby and Hewitt <br /> ,>venues, Everett, Washington (see Plate 1, Vicinity Map). The property is approximately <br /> .� rectangular in shape, extending about one hundred fifty (150) feet in the north-south <br /> direction and three hundred (300) feet in the east-west direction. The site is bordered on <br /> ; the north by the First Interstate Bank buildfng and a wide paved alley with parking, to the <br /> � —{ west by Colby Avenue, to south by Hewitt Avenue, and to the east by Wetmore Avenue. <br /> i ( <br /> Th� site is vacant after demoiition of multi-story brick and concrete buildings which <br /> - I formerly occupied the site. The ground surface of the westem half of the site is within <br /> � a few feet of the adjacent sidewalk elevations. The majority of the eastern section of the <br /> site is occupied by the basement level of the former building, one building level below the <br /> ! adjacent street level. The general site ground surface siopes gently downward from Colby <br /> � Avenue to VVetmore with approximately twelve (12) feet of elevation change. I <br />` , <br />� Subsurface <br /> The site was explored by drilling one boring at the approximate location shown on Plate 2. <br /> � Please refer to the Boring Log, Plate A2, for a more detailed description of the conditions <br /> encountered at the location explored. A description of the field expioration methods is <br />� � included in Appendix A. The following is a generalized de'scription of the subsurface <br /> conditions encountered. <br />� I Our haring encountered a dense to very dense, silty sand with gravel (Unified <br />�: Classification SM) which extended from the ground surface to the maximum depth <br />� explored,thirty-nine (39) feet. A six-inch thick layer of very dense, poorly graded medium <br /> I sand (SP) was encountered at a depth of thirteen and one-half (13.5) below the ground <br />� surface.This soil appears to a consist of a glacial deposit which forms most of the up-land <br /> art �s of the Everett vicinity. The relative high density of these glacial;y over-consolidated <br /> I soils makes them suitable for support of multi-story building loads on conventional type <br /> fousidations. <br /> � <br />; � <br /> i Earth Consultants, Inc. <br /> r <br />