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Gcutcchnical Gnginecring Rcpon <br /> llousing {�lopu <br /> Deccmbcr 5,2QOd <br /> RMf File No. 217U4 <br /> Pa�,e 3 <br /> srrL coNurr►o�rs <br /> s��ea�� <br /> I'hc rectangular-shaped sitc has a singlo-family residence (SI�R) (6527 Broadway) and a d-plex <br /> (GG 15 Broadway)separatcd by a paved xcess road to a multiple�at 6529 I3roadway. The 4-ples <br /> is accessed from Droadway and thc SPR is accassed Gom thc cast via die �ccess road to (i>�9 <br /> Broadway. <br /> lhe si[c topography consists of:� risc bchveen Droadway and the multiples for[he north lot and a <br /> ncar Icve! lot on the south (4-plex) lo[. The site is bounded on tlie cas[, south and north by <br /> residential structures and on the west by Broadway. 1k'e are not uware of where the finnl access <br /> to thc sitc will bc. <br /> Gcolo�• <br /> Most of thc Pug�l Sound region was affccted by past intrusion of continental glaciation. The last <br /> period af glaciation, the V:uhun Stade, ended approximately 10,000 to 13,000 years ago. Man}' <br /> of the gcomorphic features scen roda�' are a result of scouring and overriding by glacial ice. <br /> During thc Vashon Stade, the Puget 5ound regiun w;u overtidden by over 3,000 Feet uf ice. Soil <br /> layers overridden by the ice shee[ were compacted [o a much grea[er exten[ Ihan [hose [ha[ were <br /> noL A typical glacial sequcnce includes rccessiunal ouhvash sand, overlying glacial [ill, <br /> underlain by advnnce out�vash. <br /> �Vc revicwed the Geoloeic Map of Everett 7S-Minute Ouadranele Snohomish Countv. <br /> Washinatun, by James P. Minard (U.S.G.S., 1955) and the Soil Survev of Snohomis-h Count ' <br /> Area, Wushineton (USDA — SCS, July 1983) for the site geoloRry. The site is mapped as elacial <br /> till (Qvt; and advance ounvash sands (Qva) by the USGS and Aldenvood — Urban land complex <br /> by thc SCS. Glacial till in this arca consis[s of a dense, nonsor[ed mixture ol mud, sand, gravel <br /> and cobbles. The advance oubvash consists of well-stratificd sand with _ravel and cobbles. Our <br /> explorations encuuntered thc advance ouhvash sands. <br /> Gxplorulions <br /> 'I he subsurlace conditions ��ere explored on Novemher 22, 200d by escavating tour test pits to <br /> depdis between 2.7 and 8.7 feet below [he existing surface using a bacl:hoe. The approsima[e <br /> RMI ASSOC/ATES, LTD. <br />