1510 SE EVERETT MALL WAY Geotech Report 2018-01-02 MF Import

September30, 2009 Projecl No. T-636G 4.5 Drainaee . ' - : Srn;%acc � _ rinal er�erior grades should promotc Gce,and positive drainage away from II�e Unilding periii�cler at all times. \yata• should not be allowed �o poud or collect adjacetit lo foundalions or withinll�e immediate building area. We rccommend providing a drainage gradient of at least hvo perceut for a minimum distance of fen feet from tl�c Uuilding perimetec ff tl�is gradient cannot Ue provided, surface watcr .sl�ould bc collected adjacent to the' structure and disposed of lo appropriate stonn facilitics.', , ._ Subsurface • Proyidcd tl�e tnish fl�or grade is af or above ihe adjacencexterior gra�ie vid positivc drainage away Gom the swcture is maimained, in our opinion, perimeter founda�io�i drnins would no� bc requitcd. 4.( Utilitics U�iliry pipes should be bcddcd and backfilled in accor�ance wit1� American 1'ublic Works Association (APWA) or City of 6vereu spccifications, As a minimwn, trench backrll sl�ould bc placed and compactcd as strucmral fill, as described in Sectio» 4.2 of �his report: As noled, most of the native soils excavated on tlie site may nol be suita6lc for use,as �ackfill maierial without moiswre conditioning orll�eatmcnt: .ITutility const�vction Iakcs place dming llie wet winler months, it niay Ue nceessary m impor[ suitaUle �det weailier fill for utility trencl� backfilling. SA AUllITIONAL SLRVICES Terra Associntes, Lic: should reJicw projec( deaigns and specifications in ordcr lo verify thal earthN�ork and foundation rccominendalions l�avc been properly inte�prcted and incorporntcd inlo project dcsign. We sl�ould also provide geoteelmical seivices during constroction, to oUserve compJionce with our .design cpnccpis, specifications, a�id recommendations. Tl�is n�ill allon� for expeJient design cl�nnges if subsurface conditions differ Goni those anticipated pi•ior to lhe start of constructio»: 6.0 Lih117'ATIONS �Ve prep�red ihis report in accordance with generally accepted, gcotccl�iical engiueering praclices. No other wannnty, cxpressed or implied, is mnde: 7'his rcport is the copyriglited pr�perty oPTena Associates, lne. ei�d is inlendcd for specific application to thc Rctai] Building project in L��crett, Nashington: This report is for lhe cxclusive use of Sleadfnst Commereial Properties and its autl�orized representaiives. 'I'hc analyses and recommcndations presented in (liis re�ion arc based on data obt�ined ('ronttlie o�i•site soiltcst borings. V�rimio�is in soil conclitions.can occur, the nature and extent of which may not bccomc evident wllil construction: If variations nppear evideiu, Tcrra Associ:iies; Inc. should be requcsird to reevaluatc tl�e recommend�tions in this reporl prio,- to procecding witli constn�ction. Page No.b . , . r