Report GEOPACIFIC 04/20/2005 09:13 5035988705 ENG INC PAGE 01
53Sa CG
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GOOP .+.:
Engineering, Inc.
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• Real -World Geotechnical Solutions
• Investigation • Design • Construction Support
April 20, 2005
Project No. 03 -8183
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Attention; Andy
Venture Properties, Inc.
4230 Galewood Street, Suite 100
Lake Oswego, Oregon 617035
Fax No. 503- 670 -9099
RE: SOiL ENGiNEER'S REVIEW OF FOUNDATION EXCAVATION SUBGRADE
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LOTS-Or. AND 81 SUMMIT RIDGE
TIGARD, OREGON
References:
1. GeoPacific Engineering Inc., Geotechnical Investigation, Summit Ridge Development. Tigard, Oregon, dated May 12,
2003.
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2.Oeoaecifc Cngineering Inc., Sell ana wail Engineer's Summary at Conclusion of Earthwork, Summit Ridge Development
- Phase 1, Tigard, Oregon, Revised January 21, 2004 (should state 2005).
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GooPeolfjc Engineer, Jim Imbrie, visited the site Monday to review the foundation excavation subgrade. The •
obseived. native soils are stiff clayey silt. Some mucking may be required if the subgrade is left exposed to' •
. wet weather for a long duration, however the current subgrade is r•.onsidered adequate. Batted on our
observations, it is our opinion that the current foundation subgrade is suitable for spread foundation support to a
maximum allowable bearing pressure of 1,500 psf. Minimum reinforcement has been recommended' in the
above Reference 2. Setbacks on adjoining rookery wa113 are adequate.
Our work scope pertains to a geotechnical engineer's foundation excavation review only and the conditions
existing and exp000d rat the time of our site visit. No deck rooting, 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.
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Sincerely, •
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GeoPacific Engineering, Inc,
� �RG Pitn��
� ■t3 UllA I NEEiO 41 i
ce 14743 , �\ •
OREGON r
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James D. Imbrie, P.E„ ' .0. ,f �;� t�' � N st,
Geotechnical Engineer '� O ttA / �'�a • - •
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