Report / a �
GeoP If
Engineenng; Inc.
(k!' 2 °°5 Real -World Geotechnical Solutions
Investigation • Design • Construction Support
March 22, 2005
Project No. 03 -8183
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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 26, 30, 49 SUMMIT RIDGE � / (P
TIGARD, OREGON / Sa a-(e , ,
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References: . / S
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• 1. GeoPacific Engineering Inc., Geotechnical Investigation, Summit Ride 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).
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GeoPacific Engineer, Jim Imbrie, visited the site yesterday to review the foundation excavation subgrades on
the above - referenced lots. The observed soils are stiff native soils or compact engineered fill consisting of
clayey silt, with rocks. Some mucking may be required if the subgrade is left exposed to wet weather for a
long duration, however the current subgrade is.fairly dry. The foundation subgrades are appropriately setback
from the rear yard rockery retaining wall.
- Based or our Obs it i9 our nninion that the current foundation subarade 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. 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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r°.,
7 y
14743
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James D. Imbrie, P.E., C.E.G. f OREGON O . J
Geotechnical Engineer �. 4"/ f
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