Report 05/12/2005 17:10 5035968705 GECiPACIFIC ENG INC PAGE 01
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Real- World Geotechnical Solutions 1 _
Investigation ' Design a Construction Support
May 12, 2005
Project No. 03-8183 •
Attention; Andy
Venture Properties, Inc.
4230 Golowood Street, Suite 100
Lake Oswego, Oregon 97035
Fax No 503- 670 -9099
RE: SOIL ENGINEER'S REVIEW OF FOUNDATION t=XCAVATION SUSGRADE
LOTS 38 AND 83 SUMMIT RIDGE
TIGARD, OREGON
R9kIrrantACA`.
1. GeoPeclfc Engineering Inc., Geotechnical Investigation, Summit Ridge Development, Tigard, Oregon, dated May 12,
2003,
2. GeoPecific Engineering Inc., Soil and Wall Engineer's Summary at Conclusion of Earthwork, Summit Ridge Development
— Prase 1, Tigard, Oregon, Revised January 21. 2004 (should state 2045)•
GeoPecific Engineer, Jim lmbrie, visited the site today to review the foundation excavation subgrade. The
observed native soils are engineered fill- Some mucking may be required If the subgrade is left exposed to
wet weather for a long duration, however the current subeeeie is considered eocepteblc. Based on our
observations, it is our opinion that the current foundation subgrede is adequate for spread foundation support to a
maximum allowable bearing pressure of 1,500 inf. Minimum reinforcement has been recommended in the
above Reference 2. The foundations are sufficiently setback from the slopes and rockery walls, r
We also observed e wail spring on the north side outsid€ of the foundation on Lot 16. A drain rock ',filled trench
with 4" diameter perforated pipe should be used to divert water to the rain drain outlet. -
Our work scope pertains to a geotecnnical engineer's ruur ddation 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.
. .. ^PROFF�s
ct 14745
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OREGON
James D. Imbrie, P.E., C. -..G. eq • 2 b . �� 44. . 'c> ..
Geotechnical Engineer d w ee o. ilA l'