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Gcotcchnical Lnginccrinb Lvaluation <br /> IG?5 Lngland Avcnuc <br /> Gvcrctt, Washington <br /> NGA filc No. 781G08 <br /> Fcbruary 20, 2008 <br /> 1'agc 2 <br /> I S1TG CONDITIONS <br /> I Surface Conditions <br /> "I'he property is a vncant lot that includes gcnUc to stcep slopes ovcrlooking ncighboring residenccs and <br /> I the Puget Sound to thc north. The ground surfacc north of thc property slopes steeply down at about 35 <br /> degrecs with n vertical rclicf of roughly 40 fcet and is covcred with brush. A previous residence was <br /> locatcd on thc subjcct properly nnd lias bcee rcmoved. The foundntion area has becn excavatcd for the <br /> pinnned new tnulti-story, single-fmnily residencc. Thc planned layout is shown on the Site Plan in Figure <br /> 2. A profilc of thc ground surfacc is shown on thc cross section in Pigurc 3. <br /> I <br /> We obscrved a ncar-vcrtical cut over eiglit fect high along the wcstcrn side of thc building e�cavation. <br /> I 'fhis cut has becn slanding for somc timc, and nppcars tn be fairly stablc. Densc nati��c sand is esposed in <br /> this cut. <br /> ISubsurFace Conditions <br /> IGcology: Tlic gcologic units for this arca arc mappcd on thc gcologic map tiUcd, "Distribution and <br /> Dcscription of Gcologic Units iu thc Mukiltco Quadranglc, Washington," by Jamcs P. Minard, USGS, <br /> I 19R2. Thc sitc arca is mnppcd as Quatcrnnry r�dvancc Ouhvash dcposits (Qvn). In gencral, advancc <br /> ouhvnsh dcposits consist of glacially compxtcd sand and gravcl. Our esplorations cxposcd matcrials <br /> Igcncrally consistent�vitli lhc mnppcd soils. <br /> G�plar:dions: The subsurfacc conditions �eithin thc site �ecre e�plored on January 31, 2008 by <br /> _ ezcavating hvo hand auger holes to depths of cight fect bclow thc c�isting ground surfnce. Thc <br /> approximatc locations of thc c�plorations arc sliown on the Siw Plan in Pigurc 2. A gcologist from <br /> Ncison Geolcchnical Associntcs, Inc. (NGA) was prescn[ during the explorations, csamined the soils and <br /> gcologic conditions cncountercd, obtained samples of tlie diffcrcnt soil types, and mnintaincd logs of thc <br /> i <br /> Icsplorations. <br /> T'he soils �vcre visually classificd in gcncral accordance with the Unificd Soil Classification System, <br /> which is presented in Figure d. 'fhc hand auger logs are prescntcd as Pigurc 5. \Ve present a bricf <br /> description of the subsurface soil conditions bclo���. Por a detailed description of the subsurfacc <br /> conditions, tlic soil logs should bc rc��icwcd <br /> NELSON GEOTECHN/CAL ASSOC/ATES, /NC. <br /> I �ti <br />