Report 04/03/2005 17:32 • 5035983705 GEOPACIFIC ENG INC PAGE 01
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Real - World Geotechnical Solutions
Investigation • Design • Construction Support
April 8, 2005
Project No. 03 -8183
Attention; Andy
Venture Properties, Inc.
4230 Galewood Street, Suite 100
Lake Oswego, Oregon 97035
Fax No. 503- 670 -9099
RE: SOIL ENGINEER'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE
LOTS 55, 88, AND 109 SUMMIT RIDGE
TIGARD, OREGON
References:
1. GeoPacific Engineering Ina., Geotechnical investigation, Summit Ridge Development, Turd, Oregon, dated May 12,
2003,
2. GeoPacific Engineering Inc., Soil and Wall Engineers Summary at Conclusion of Earthwork, Summit Ridge Development
- Phase 1, Tigard, Oregon, Revised January 21, 2004 (should state 2005).
GeoPacific Engineer, Jim Imbrie, visited'the site tooter to review the foundation excavation subgrades on the
above- referenced lots. The observed soils on Lgt 55 Jre medium stiff to stiff native soils and on Lots 88 and
the hack of Lot 55 are compact engineered fill cbr►el of clayey silt, with rocks. Scene mucking may be
required if the sub9rade is left exposed to wet•weather for a long duration, however the current subgrade Is
only damp. The foundation subgrades are appropriately setback from the rear yard rockery retaining walls.
Based on our observations, it is our opinion that the current foundation subgrades are adequate for spread
foundation support to a maximum allowable bearing pressure of 1.503 psf.
Our work scope pertains to a geotechnical engineer's foundation excavation review only and the conditions
existing and exposed et the time of our alto visit. No dcok footing, :petio, or other appurtenant structure
subgrades were observed. Our work was performed to the current local standards of practice. No other
warranty is herein expressed or implied. If you have any questions, please call. "
Sincerely,
OeoPacific.Engineering, Inc.
41 N4. ' ry a
1474
James D. lmbrie, P.E,, C.E.G. OR'
Geotechnical Engineer �4iy, z3 `o j �
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