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curcent sl:wbility of Uie site provided Uiat it is developed in �ccordance with lhe recommendations <br /> contained in this rep�rt. <br /> �rosion Hazard <br /> Thc onsite soils in thc developmcnt area have a moJcratc erosion potential duc to thc slopc of the <br /> property. Thc proper t�.sc of"bcst managemcnt pncticcs" BMPs should be used during developmcnt <br /> of thc projcct to minimim thc potcntial for crosion and scdimcnt transport. Thc follow�ng is a p.utial <br /> list of I3MPs that should he implemented as part of an crosion conRol plan for the project. <br /> • kecping al1 exposed soils covered when not actively workcd <br /> • Gstnblish a silt fenee across the northern extent of the clearing limits <br /> • Schcduling carth work activities during dry conditions <br /> • EsWblish tempor.�+ry/permancnt vegctation as soon as pussiblc aftcr foundalion installalion vid <br /> utility hook-up. <br /> With proper implemcntalion of bcst m:inagement practices, the property may be dc� elopcd without <br /> significant crosion or scdimcnt trans�mrt. <br /> Scismic Ila�ard <br /> Gencrally, therc arc four types of polential gcologic harards associated with !arge seismic events: I) <br /> surficial �mound rupture; 2) seismically induccd landslidcs; 3) liyuefaction; .u�d 4) ground moUon. <br /> l�hc potential for each of thcse to impact the site is discussed below. <br /> 1T�c lot is not u�thin the vicinily nf a known fault zonc. Pauh ioncs in !hc Pugct Sound region arc <br /> currenUy being studied by the United States Geologic:d Service (UtiC'iS) and have been detem�ined <br /> to bc activc and capahlc of producing large carthyiuJccs. Much is sti:i ►o n� i�:u„�a �n���� �t,«� raui� <br /> systems but it is gcnerally hypothesizcd that thcir recimcnce intervrJ is scveral thousand ycars. Duc <br /> to thc suspccted long rccurrencc interval and thc unccnainry of whcrc thc ncxt surface rupturc may <br /> occur, the potential for surficial ground niplure is considered tn he unpmdic4ible and no mitigation is <br /> possihlc or ncccssary. <br /> Ilascd on the densc, consolidated nature of the glacial advance ounvatih sedimcnlx undcrlying thc <br /> pruperty, Ihe risk of a scismically triggcrcd landslidc is cor.sidcrcd to bc low. <br /> Bascd �m Ihc dciisc charactcristic of thc ad�•ance outwa�h sand and lack of saturatcd 6mund <br /> conditions, it is our opininn lh�t Ihc risk ��f liyucfacti�a un Ihis silc is Inw. <br /> Seismic har<uJs ihat will efTcct thc housc will hc duc to Ihc intcnsity and duration ��f�hc Nmund <br /> sh�il:in�. L1asecl un thc cncountcrcd stratignphy, �;tn�ctural dcsiE,n of thc projccl shnuld hc consistcnt <br /> with 2004 lmi�rnurionn! l�uildin� Cndc (1f3C) �.�uidclincs. In accordancc with I ahlc Ihl 1.5.2 0( thc <br /> 2009 113C, Uic ::ubject sitc would bc cl:Ltisiticd as tiile Class (' <br /> Ccotcchnical F.nginecring Rccommcndation� <br /> from a ga,tcchnical enginecring stancl�oint, lhe property is considered to b� swlablc ti�r lhe planned <br /> dcvclormcnt of a singlc G�mily residcncc. �I'hc dcnsc adv.mcc ouhvath sinJ sediments �.��ill providc <br /> suitnhlc foundation hcaring •;uppc�rl G�r Ihc planncd rcsidcncc. Sincc the residcncc f'our�d:�tion is <br /> bcing dcvclopcd on a modcretc slope il will hc ncccssary to kcy thc fi�undation into thc Jcnsc sand <br /> 13GC, pllr, tA2fi7 20'3"' Avenue NE Wnodinville, W� 98017 (425) 273-SOC,2 �� � •��'+ 1 <br /> Ca J , <br />