4728 COMMERCIAL AVE 2016-01-01 MF Import

{ , Rohcrt Kincaid Junc 27. 2007 Page 2 3. Exploration of subsurface conditious within the property via test pits excavated by a backhoe and operator that you provided. 4. Preparation of a geologically hazardous arcas geotcchnical Ictter providing our observations rclative to geotechnical conditions at thc sites pertinent to thc proposed developmcnt and City of Everett Geologically Hazardouti Arcas regulations,and providing ourcondusions and gcotechnical recommcndations regarding tl:e proposed dcvclopmcnt. Our scrviccs havc bccn provided on the basis of a rcview of existing infomiation, gcologic reconnaissancc of thc sitc and adjaccnt areas,tcst pit cxplurations on May 22,2007, discussions with you rcgarding thc proposed dcvelupment, and our eapericncc. SITE CONDITIONS Thc subjcct property is located at 4728 Commcrcial Avcnuc in thc Glacicr Vicw neighborhood of Evcrctt,Washington, as shown on thc Vicinity Map(Figurc 1). As shown on the Sitc Plan (Figure 2, bascd on a drawing that you provided), the property is approximatciy triangular in shape, mcasuring l22 fcct along tiic allcyway bcavccn Colby Avc�mc and Comtnercial r�vcnuc and c�tending 107 fcet c:ishv:ud to thc Intcrurban Trail right of way. The rroperty is presently vacmit,Uut includes some fill as a result of past grading. Local slope inclinations within the ccntral portion of the property :ue Iess than 10 percent. Thc castern portion of the property includes thc upper part of a stcep,approximately 20-feet-hi�h cut-slopc, inclincd approximatcly 50 perccnt,which was exca��atcd during thc construction of thc Intcrurban Railway in thc carly 1900's. Somc fill also cxists ncar(as closc as 12 fcct away from)the [op of that slopc. Both the property and thc stccp slopc:dong the Interurban Trail arc vegetated by grass and bivsh. Subsurface conditions within and adjacent to the site were explored by means of thrce tcst pits e�cavated at approximatcly the locations indicatcd on the Site Plan and Site Profile. A description of the subsurface c�ploration program and thc logs of the test pits are presented in U�e Appendia. As disclosed in the explorations, the sitc is underlain mainly by medium dense to dcnsc glacial advancc outwash sand(Qva). This is consistent with existing geologic mapping of this area (.T;imes P. Minard, 1955, Geologic Map of the Everett 7.5-Minutc Quadranglc, Snohomish Couty, Washington: USGS Map MF-174S). Fill soils, consis[ing of ineditun densc sand and ranging up to� feet in thickness (near the top of the steep slope :irca) or morc (beneadi the fill embankment supporting thc allcy along the western site margin) wcre also encountcred in thc cxplorations. I�`o scepagc was encountered in any of the cxplorations, nor was any emcrgent groundwater secpage obscrved within the site or 7505 West Lake Sammamish Parkway Northoast Redmond,Washington 98052 425-882-4850 www.tUbbs.com �I��