Report �,l � � a rt. ..
Geo�
Engineer
January 31, 2012 Real -World Geotechnical Solutions
• Investigation
• Design
Project No. 12 -2510 • Construction Support
Kyle Vincero Remodeling & Construction Services
kyle_kozakent @yahoo.com
711 N. Mollalla Ave.
Mollalla, OR 97038 ST l " d d 2-/C2
Phone 503 - 891 -7037
RE: FOUNDATION EXCAVATION REVIEW
MOUNTAINVIEW SUBDIVISION LOT 1
/4998 SW AUGUSTA TERRACE
TIGARD, OREGON
GeoPacific Engineering Inc. visited the site on January 26 to review the single family home
foundation layout on Lot 1. We understand that the proposed building is a two -story home. In our
opinion, the observed subgrade is generally adequate for support to an allowable bearing pressure
of 1,500 psf. The expected maximum anticipated total and differential footing movements (generally
from soil expansion and /or settlement) are 1 inch and 3/ inch, respectively, over a span of 20 feet.
At the time of our site visit, the excavation was nearly complete. The excavation consisted of
predominantly medium stiff to stiff, native soil that could be probed less than 2 inches with medium
pressure using a steel "T bar probe. These soils are considered adequate to support the planned
foundation loads. Footing -to -slope setbacks were more than adequate and foundation embedment
depths appeared adequate.
Due to rocky and clayey soils encountered throughout the site, all foundations should incorporate
appropriate drainage measures. Crawlspaces should be provided with a low -point drain and pass
through pipes should be installed through footings which would otherwise restrict water flow to the
low -point drain.
Care should be taken to avoid saturation or disturbance of footing subgrade soils during and after
excavation. If footing bearing soils become saturated or disturbed, any softened soil or slough
should be removed and replaced with crushed aggregate or additional concrete.
13910 SW Galbreath Drive, Suite 102 Tel (503) 625 -4455
Sherwood, Oregon 97140 Fax (503) 625 -4405
Project No. 12 -2510
Mountainview Lot 1
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. Within the limitations of scope, schedule
and budget, GeoPacific attempted to execute these services in accordance with generally accepted
professional principles and practices in the fields of geotechnical engineering and engineering
geology at the time the report was prepared. No warranty, express or implied, is made. If you have
any questions, please call.
Sincerely,
GEOPACIFIC ENGINEERING, INC.
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James D. Imbrie, P.E., G.E.
Geotechnical Engineer
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