1230 MADRONA AVE 2016-01-01 MF Import

A, ril 10, 2005 Proposed Single-Pamily Residence L&A Job No. SA019 Page 4 cuts or natural slopes �vhen undiswrbed. Where exposed on slopes of poor vegctation cover and subject to stonn runofT; thc Advnnce Ouhvash deposits can be gradually eroded and may slough to a tlatter inclinatiai. "fhc Advance Out��ash deposits in their native, undisturbed state can provide good foundation support with Iitlle settlement expectcd for light to modcr�te residential structures. SUI3SURTACG CONDI770NS Subsurfnce conditions of the su�jcct sitc ncre explored on Pebruary 17, 2005, with hvo test pits. Thc test pils ��ere excav,�tecl with a tirc-iuounted backhoc lo depths of 8.9 and 9A feeL Thc approximatc locations of Ihe test pits are sho�vn on Platc 2- Site and Exploration Location Plv�. Thc tesl pits �verc locatcd �vith cithcr a tapc measure or by visual rcferencc to existing topogrnphic fe�tures in Ihe ficld aud on tlic lopographic survey nmp, and their locations shoidd be considcrcd onl�� accur.�tc to �hc mcnsuring metl�od uscd. n geotechnical engineer li�om our oflice ��as present during subsurf:ice exploration, who examined the soil and gcologic conditions encotmtered and completed logs of lest pits. Soil samples obtaincd from cach soil unit in the test pits ��cre visuaily classiticd in gcncral accordance wilh United Soil Classification System, a cop}� of which is presenled on Plate 3. lletailed descriptions of soils encountercd during site cxploration are presented in test pit logs on Platc 4. Thc test pits rcveulcd that the sitc is underlain by a brown-gray to grnp, fresh, �dvance ouhvash deposit of dcnse, dean to slightly silty, finc to medium sand, �t about 6 to 7 fect Uclow existing grada In 1�cst Pit 1, located in the uphill portion of lhe site, this advmice out�vash deposit �i�1s overlain by a layer of light-browu to light-gray, wcakly-cemented glncial drift of dense to very- clense, silty fine sancl witl� a trace of gravel, abuul 4 fcet thick. This layer of glacial drift is in turn overlain by about onc loot oPbrown weatlierecl soils of inedium-dense silty fine sand and 2.0 LIU & ASSOCIAT�S,INC.