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1 onrr <br /> 09/24/2061 13:50 6049217727 INTEGRAL:BELMOv? 02/05 <br /> Associated Earth Sciences, Inc. i <br /> � . � �! � � <br /> September 17, 2001 � <br /> Project No. KE98407G <br /> I <br /> Quilceda Design Group <br /> 5703 Westpon \Vynd �I <br /> Wcst Vancouver, BC Canada V7W-2Y1 � <br /> � <br /> Attention: Mr. John Lakhani <br /> Subject: 5ummary of Foundadon Subgrade Prepazation • , <br /> Building Pads A-16 through 4-22 and'C-3 through C-5 <br /> Glen�vood Terrace Developmen[ <br /> Glemvood Avenue <br /> Everett, Washington il <br /> Dear hit. Lakhani: . I <br /> I <br /> In accordance with your request, this lettec summarizes foundation ?reparation, observacion, <br /> and ces�ing performed .for the abo��o-referenced building oads io: the Glenwood Terrace <br /> devclopmenc. As you are aware, we have provided geo�echnica! cxploration and design <br /> recommendations for this project, as wcll as, obsen�ation and cesting =uring o��ercxcavarion <br /> and strucmral fill placement. Our design recommendations aze summarized in avo repOrts <br /> entided "Geotec}�qical Rccommendations fot Foundation Support Buildings A-16 throughlA- <br /> 22," dated September 24, 1998 and "Opinion Concerning Existinb rili Lots C-1 [i�rough C- ;" <br /> datcd December 30, 1999. Ne hare included Figure 1, of thc Scp[>mber 24'" ceporc�ro <br /> iliustrate building pad locations. Our observation and testing s:rvices during earthw rk <br /> ¢onstru�tion have been documented in daily fidd repotts wnich have neen previo ly <br /> transmitted to you. - <br /> As recommended in the above-referenced repora. �ve oocervcd the overexcavation of <br /> unsui[able soils below che subject b'uilding pads and the placemer.c and compaction of struc al <br /> fill. Original design recommendations for the subject building pads ineluded the instatlationlof <br /> augercast piles for foundation support. Based on our more detailed subsurface explorat'on <br /> program, it was detetmined that pile support could be climinated in lieu of propecly compac�ed <br /> struceural fill pads placed abo�'e suitable inorganic cxisting fil: s�ils. We obser�•ed We <br /> excavation of the surficial organic fill soils and n•aste debris to expose suitable, znorgapic �ill <br /> soils at depth. A minimum of 4 feet of properly compacred strucmral filt was then placed a�d <br /> compacted to a minimum 95 percenc zelative compaction to obtein iesign subgrade eleva[ida. <br /> I <br /> C:Tcnte C�:c•91� FRn A.e-�ua.S�.Re �00•qrk;n0.ViA 9BJi3 '�o-,e 48 5:"•�?Oi •,Fx<Si5 82'-Sa24 <br /> b\kn S^.d^tl QNce• I7?M�:rvre U�e NoM•?e�haGpe 4'�an�.W4 S91 Ip• ho��?p6'3'.-??',•Fix 206�80.5a35 <br /> ' ��> <br />