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JUN ® 2005 GeOP cifi
"; 'Eogineering.Inc. -
Real - World Geotechnical Solutions
Investigation • Design • Construction Support
June 2, 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 41 AND 52 SUMMIT RIDGE
TIGARD, QREGON
References:
1. GeoPacific Engineering Inc., Geotechnical Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12,
2003.
2. GeoPacific Engineering Inc., Soil and Wall Engineer's 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 today to review the foundation excavation subgrade. The
observed subgrade consisted of compact fill with some rock. The houses are sufficiently setback from a small
rockery retaining walls such that they are not surcharging the walls. 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. Minimum reinforcement has been recommended in the above Reference 2.
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. 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,
GeoPacific Engineering, Inc.
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James D. Imbrie, P.E., C.E.G. ' .,, bz'. /
Geotechnical En ineer 23, "0 � ���
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