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JUL-26-90 14,35 FROM.TURRA ASSOCIATES <br />ID-42SO214334 <br />FAGZ 2/6 <br />TERRA ASSOCIATES; Inic; <br />Consultants in Geotechnical Engineering; Geology' <br />and <br />Environmental Earth Scienca <br />July; Z. 2000 <br />Project:No. T-4199.1 <br />Mr. Gary Mahan <br />clo Mr. Joe Dawson <br />OnWi Homes . <br />11122 — 99th Avewie NE . <br />Arlington, Washington 98223 <br />Subject: Eait1twork Observation and Testing Services <br />..Mahan Residence <br />48003lock of Harbor Lane <br />Everett, Washington, <br />Reference: Geotechnical Report, Malian Residence, by.Ten a Associates, Ine.,'dated December 3, . <br />1998 <br />Dar Mr. Dawson: <br />As requested, we provided intermittent earthwork observations and testing savioes for the Mahar - <br />Residence, betwuR April 26, 1999 and October. 15, 1999. We previously performed a geotechnical <br />study for the project and presented our findings in the referenced report. <br />Foundati <br />Our. construction services included observing general excavaf t conditions, conducting 40sity oats in. <br />some structural fills, and observing some ofthc drainage _istallations. After forms and rn sforoiag steel <br />had been placed, we examined footing' excavations. This assessment verified that soils with adequate <br />bearing capacity were present at the footing bearing elevation. Based on our obsavatioos, them <br />excavation will provide support for the design bearing capacity of 2,500 pounds square foot (pst): We <br />have attached our field memos ddscribing the conditions observed. <br />A large stump was observed in the southeast coma of the rcsideoce excavation. that required the <br />overexcavation of loose and disturbed soils. The resulting excavation was subsisquintly lfUed with • . <br />concrete at the recommendation of the structural engina.T: The concrete in the stamp-mmoval am was <br />pr.- ent at the time of our initial foundation examination. Following the construction of the house walls, <br />we observed the placement of subsurface drainage, perforated pipe, and dntiri rock behind the footings ' <br />and walls. These observations are discussed in the attached field memo. <br />12525 Willows Road, Suite 101, Kirkland, Washington 98034 <br />11L--- JA1 r% o'1y �. C.:., Win 011 A22A <br />