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. p.; ��,.:�l��t Oe:4' .�Uh3J?OJ7'v_ SH.;�:a� ,: F�rrcrl Fa�;E t31 ` <br /> � , ... i �� �_, <br /> .�., 0'I' -�• L' H March "4, 199E <br /> C NSULTANTS, INC. <br /> JN 6B050 <br /> ;:1 i6 N.E.:���ti St �!��r.�uc N��7 Sw�e I6 <br /> pe erue.WA PBPllS <br /> i? 1 t11561e <br /> F t�Td561 <br /> Tnom�a Jon�i <br /> 3930 Hoyt Avenuo <br /> I Everett, Washinpton 98201 <br /> Sub�ect• Gaotechnical Enpineerinp Study <br /> Lots 10, 11, 12, and 13 of S+a9rooKe HlphlnnCs <br /> iOceen Avenue antl Chi�ook Drive <br /> iEvarett, Washinpton <br /> ip�ar Mr. ,lones: <br /> ���o are p!eas�a te presem th�s geotechn�ca; enflineennp repoA for four Iels In the Seabrueke <br /> li�ghlands s�bar;�:ion. The scope of our we�h consisted et explarin� site suriace antl subsur�ac;e <br /> Ctndit�ons a�C than developmp this report to provi0e reromrr,endations for generat esrthwork and <br /> desipn cnlena for Ioundalions and rotaining walls. You ruthonzeA our wo�C by acr.Apting our <br /> iproposal, Oa;sd Febrvary 13, 1996. <br /> The subsurface conditior,s nf th ur lots •,vere expl��ed wdh eigh� test pds !nat e�co�.nlared <br /> varyinp conditor,s. VJe also r ed three bonn�s ouf flrm completed in 1�90 alonp !he norttiem <br /> poi�ions uf Lc+ts 12 and 13 tor access road 8ased�n this subs�Raca infomat�.�n, Lu!s 10 sr.d <br /> 11 contain Det�Qen 3 und 15 eot et olU fill cvadying/oose tc medium-densa send and silty sand <br /> ��kew�se, �he majority of Lot 12 appears to Ce �urf�ced N�ith al leaat 12 feet o� tiil. pue ic !ne <br /> cepth of lr�e existinp till on L�s 10, 11, anC lZ and lne pdtential for unacceptat;iy larpn diff�re� • +� <br /> settlemonts ia ser�ctures plec d above this fi!I, we re:ommend supAortina the :esfdencc. on th� <br /> lots on deup foundation systems that extend do+�n to tha compe;anl, native, s1ry ssnd It appears <br /> tha! arilled :oncrete piers or small-diameter, drfven plpe pUaa wltl Ce the most economical deep <br /> I foundation systems. Livir,p•spaco slabe shou;d be strvduralfy suppo�led by the p�i,np i <br /> On Lot 13, w� fou�ztl a ninimal depth ef till Our test plts on ;nis lot revestod 'n,m 2 tc a test of f�ll <br /> uvet loosa, 3�It� send that becamo medium-danse at 4 to 7 f9et b�!Ow tha exisUnp pfatle It <br /> appeara tha; ;he !�ouso on Lot 13 coultl feasibly be wpporlea by convonUona! footinqs bean•ip on <br /> modium-Cerso, r;ati•�e soi�. Cependinp on the f�na: footinp grades somc overexcavaGon may be <br /> ioqwred ba�;eatti the fcet;ngs :o expose competent, natfve soil. <br /> I <br /> I . <br /> 'I'�'!` <br /> .� <br /> I <br /> I I � ,� _�,�..r..r' � <br />� � - � ' . ,.�� <br /> �M�-a <br />