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OL�./OB/'L108 09: 10 1�:1\ 425 821 4334 7'ERRA r15SOCIr1TES ��02 <br /> TERRA AS�OCIAT�S, Inc. <br /> Consultants in Geotechnical Fngineering, Geo�ogy <br /> and <br /> Environmental Earth Scicnccs <br /> 3oc� � � -��3 <br /> o�ca�r s, zoo� <br /> Project No. T-5838-3 <br /> Mr. Michael D. Chapliu, AIA <br /> Associate <br /> Sclatcr Partners <br /> 414 Olivc Way, Suite 300 <br /> Seattle, 1Yasl�ington 93101 <br /> Subject: Pinal Lcttcr <br /> Geotechnical Obscrvatiun Services <br /> TOC Facility <br /> Seaway Center,Lot 3B <br /> Evcrctt,Washington <br /> ReCerences: 1. Ficld Memos, prepared by Terra Associates, Inc., dated April 30, ZU07 <br /> Quough August 16,2005 <br /> 2. Geotechnical Rcporl, Project No. '1'-SS:iA-2, prepured by Ten�a Associutes, Inc., <br /> dated Pebniary 19, 2007 <br /> llear Mr. Chapliu: <br /> As reyuested, we ha��e provided geot�.chnic:d engincering oUservation and testing services during grading and <br /> foundation construction at the TOC tacliity in Everett, \Vasltington. The purpose ot'our work was to verify that <br /> the geotechnical aspects of construction we�:. comple�ed in general conformancc with recommendations contained <br /> in the rcfercnced repon m�d as prescnted by our on-sile representutives during construction. <br /> . <br /> Wc provided part-time earU�wa'k observation and testing scrvices from April 30 through Augt�st 1G, 2007. <br /> lluring our work, we maimained a recorJ of our observations, recommend:�tions, and compaction [est results in <br /> nur daily field memos. Our daily ficld memos were transmittcd to you, the o�vner, and your conVactor on an <br /> ongoing basis during consuz�ction. Tltc scope of our work includcd: <br /> o Supplemcntal cnnsidlntion during early phases of grading activities. <br /> • Obscn�ation and compactiun testing of structurxl fill Juring mass grading. <br /> o Observation of bearing surtaces. <br /> � Observation and co�:ip:�ction testing of utility trench and retainino wnll backCll. <br /> � Compaction testing and observation of proofroLl of pavement subgrade. <br /> 12�2> Willows Road, Suile 101, I<irkland, VJashington 98034 � a <br /> Phooe (425) F{21-7777 • Faz (425; a?1-4334 <br />