6101 23RD DR W NORPRO 2016-01-01 MF Import

Geotechnical Report Norpro Building B XXXX 23rd Drive West Everett, Washington 1,0 PROJEC'I' DL•'SCR1P7'ION We miderstand th� pmjcct will consist oi constn�cting an approximniely 34,100 syuaro-foot �varehousc building alnne ��itit associated utilitics and pa�-ements. A pi•�liminary civil plan b}• PACLAND, dated Febtvary 24, 2011 indica�cs lhat �hc building will occupy thc cenlral majority of ihe parccl. 'llic b��iiding will have dock-high loading arefls on its casl s��!� with paved acccss lanes along its southe�n side �ei[h surfacc parking to thc west. l�l�c main access will be gc+ined off of 23rd llrivc West from the cxisting access tbr Noipro 13uilding A along Ihe southcrn boundary ol'the siie. Wc tmderst�nd lhal lhc Uuilding ��ill be a till-up precast concrele wall pancl siruclure with foundations consisting of continunus perimetcr footings and isolated intcrior sprcad 1'ootings. Floors will likcly bc cottstructed nt gradc and at dock-high clevatiou on the cast end of[hc stnicture. For stn�clures of lhis nalure, we expecl load bearing walls will a�ny 4 to G kips per lineal I'oot anA isolated sprcad footines will carry loads tcwer than 100 kips. A plmmed tinish tloor clevation of dS4 fect is s6own on the prcliminary plan. \Vith cunent sile grades a maximum lill of approximately 6 feet and cut of approximately fU to 12 feet will be rcquircd to cstablish bottom of fooli��g elet�ations. A retaining wall is planned to f�cc a ncar-venical cut almig thc eastcrn propeny line. Bascd on the plan, thc rct�ining wall u-ill ��ary from Icss than one-f'oot to a maximwn of approximatcly 7.5 feet. A second retaining wall is plannad to facc a nearvveitical lill with a uiasimum hcight of fow fcet in the nortliu'esiem margin of the site. Sloping embankmcros will hc creatcd to �ccommodate grade transitions along the soutl�,west, and north property Uoundari�s. Devclopmen� sturm�vater will be collccted and rou�cd to an ei�ht-foot diameter, below-grade, siorniwater dcten�ion vault in ihe si�cs nortlteast quadmN. Stonm��ater ��ill thcn bc directed Cor disch�rge to cxis;ing sionnwuter prnids north ol�he dcvelopmenl nrca. l'he rccoromend�tions coNained in the fo��o«'in8 seciions of this repon :irc bascd on our unders�anding of these desien fenturcs. ]f actual features vary or changes are made, wc should revicw them in orAcr to mndify ottr recommcrdations, ns rcquired. We should review tinnl desi�n drawings and speciticntions to verify that our reconunendations liave bcen properly inlcrpreled and incoiporated into projecl design. 2.0 SCOPF:OF WORK Our work was cotnpleted in aceord�nce wilh our aulliorized proposal dated M�y 17, 201 I• Accordingly,on May 2.5, 201 I. we observcd thc excavation of 4 tcst pils to a maaimum dcpth of 12 feet bclow cxisting surface grades. in h'ebniaq, 2007, wc explorcd subsurface condilions on thc properly fnr preparation of a gemechnical repon for dcsi¢n and conslruclion of thc eais�ing 'I�OC building to the inuucdiate nortli. '1'wo of�he tcst pi�s from Ihose efforts .ire located ��ithin the projcct site and will bc used �o supplcmcnt our most reccnt exploralion. Using the infonn�tion obtained from each of nur subsurface cxplor.iiions, documeN rcvicw, and laborntoq� testing, we perfonned anol��ses «�dcvclop gcotechnical recoromend:rtions for devclopment at �he site.