Laserfiche WebLink
� � ' C 5gqd�. <br /> GEOTECH Me�n ,a, ,eee <br /> COIYSULTANTS, INC. <br /> I3256 N.E.20th St Morthup Way�,Suke 16 JN 88050 <br /> &Ilewe.WA 98005 <br /> (:JB)7�75818 <br /> FA1I717�581 <br /> Thomas Jons� ' <br /> 3830 Hoyt Avenw <br /> Everott, Washinpton 98201 <br /> . Subjact (i�obchnical EnpinNrinp Study <br /> Lab 10, 11, 12, and 13 ot Seabrooke Hl�hiands <br /> Oaan Avan��and Chinook DAvs <br /> Ewntt,"Nashinpton <br /> Dear Mr.Jon�a: <br /> Ws aro pleaeed to proaent thfs p�otschnical enpinsednp roport for four lob in ths Seabrook� <br /> Hiphlanda aubdfvision. Ths scope ot our work coniiabd of explorinp :ks suAacs and subsurtacs <br /> condiUon� and then developinp fhis ropoR to provide rocommendadona for pen�ral serdnvoAc md � <br /> daipn aiMria for found�Uons and rotafnfnp walla. You authorized our woAc by acceptlnp our <br /> propoal, dated February 13, 1998. <br /> The subsuAace condiUona ot fhe four lota were explorod with eipht te=t p(ta that encounMrod <br /> varyinp condiUons. We also roviewed throe bo�inpa our flrtn completed in 1990 alonp the northem <br /> portiona of Lots 12 and 13 for an axsaa ro�d. Bated on fhia aubaurfacs intormadon, Lob 10 and <br /> 11 contain belwsen 3 and 1 b tset of old flll oveAyinp loose to medium-denss �and �nd eilty eand. <br /> Likewise, the majority of Lot 12 app�ars to be eurfacsd with at leaat 12 tNt of flll. Due to th� <br /> depth oi the exiatlnp flll on Lob 10, 11, and 12 �nd tt�� potentlel for urncceptably laro�dIR�nMiat <br /> ' settlements In structuros plaad abovs this flil,vw rocommend supportiny th�nsidenca on th�p <br /> lots an deep foundaUon eyst�m�that extend down to th�competent, naUva, :ilty und. It app�an <br /> . that drilled concroM pie�s or amalEdiam�hr, drlwn pipe piles will bs ths most economic�al de�p <br /> ,� toundeUon systema. Living-spacs�labs Mould be afructurelly auppoRed by th�pflinp. <br /> ! <br /> On Lot 13,we tound a minfmal depTh of 8i1. Our te�t pib on thia lot roveal�d from 2 to 4 fs�t of flll <br /> over loose, siity sand that became medium-dena at 4 to 7 h�t below the exiatlnp prad�. It <br /> appsan that tha houae on Lat 13 could fsas(bly bs supported by conventlonal fooUnps bsarinp on <br /> medium-0anae, na0ve soil. Dependinp on ths flnal tootlnp pradea, eoms verettcavatlon m�y b� <br /> requ(rod beneafh fhs fooUnpa to expose competent, na8vs soll. <br /> � �l�«°f i o�f <br /> �L� IO'��'.� �L Het / Jn✓'� <br /> � C�na " � ' . <br /> � t -� , <br /> , �� <br /> =-� <br /> � <br /> � <br /> � <br />