Report 03/25/2005 11:.31 GEIPACIFIC ENG INC PAGE 01
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GeoP
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Real -World Geotechnical Solutions
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r Investigation • Design • Construction Support
March 25, 2005 /5
02 $ SG)G P o� D�
Project No. 03 -8183 ti
Attention; Andy
Venture Properties, Inc. •
4230 Galewood Street, Suite 100
Lake Osweyu, Oregun 97035
Fax No. 503 -670 -9099
RE: SOIL ENGINEER'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE
LOT 27 SUMMIT RIDGE
T'IGARD, OREGON
References,,.
• 1. GeoPacific Engineering Inc„ Geotechnical Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12,
2003.
2. GeoPacific Engineering Inc., Soil and Wall Engineers Surnmary at Conclusion of Earthwork. Summit Ridge Development
•- Phase 1, Tigard, Oregon, Revised January 21„ 2004 (should state 2005).
GeoPacitic Engineer, Jim Imbrie, visited the site yesterday to review the foundation excavation subgrade on
the above - referenced lot. The observed soils are compact engineered fill consisting of clayey silt, with rocks.
Some mucking may be required If the ei hgraciee is left exposed to wet weather for a long duration, however the
current: subgrade is butnot- softened.— -Lot •2•7it- "appropriately »setback from the rear -yard ro
retaining wall::
Based on our observations, it is our opinion that the current foundation subgrade is adequate for spread
foundation support to a maximum allowable bearing pressure of 1,500 psf.
Our work scope pertains to a geotechnical engineer's foundation excavation review only and the conditions
existing and exposed at the time of our site visit. No deck footing, patio, or other appurtenant structure
subgrades were observed..Qur work was performed to the current local standards of practice. No other
warranty is herein expressed or If yqu have any questions, please call.
Sincerely,
GeoPacific Engineering, Inc.
wU~ C V��C� !off
James D. Imbrie P.E. L.E.G. 4 •
Geotechnical Engineer ` , , OREGON
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