Report (75) Mcralpi8-0910s
1.5 1 p0 s °°Q u GeoPaiitic
Engineering,Inc.
Real-World Geotechnical Solutions
Investigation• Design•Construction Support
April 17, 2018
Project No. 18-4818
Lennar NW Corporation
11807 NE 99th Avenue Ste. 1170
Vancouver, WA98682
Fax 360-258-7900
Email Tonino. PacificonLennar.com
FOUNDATION SUBGRADE REVIEW
MADELINE HEIGHTS LOT 9
TIGARD, OREGON
GeoPacific Engineering Inc. visited the site today to review the single-family home foundation
subgrade on Lot 9. We understand that the proposed building is a two-story home. The observed
soils were stiff compacted fill. In our opinion, the observed subgrade is currently adequate for
support to an allowable bearing pressure of 1,500 psf. Footing to wall setbacks appeared adequate.
The expected maximum anticipated total and differential footing movements (generally from soil
expansion and/or settlement) are 1 inch and % inch, respectively, over a span of 20 feet. Due to
relatively impervious silty and clayey soils encountered throughout the site, all foundations should
incorporate appropriate drainage measures in accordance with the International Residential Code.
Adequate crawlspace drainage is not something that geotechnical consultants can verify; the
purpose of our visit is for observations of foundation bearing conditions only.
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. PRopee i
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GIN�F'Q O�
147DE
7/ OREGON
41SD.Ws'
James D. Imbrie, G.E.
Geotechnical Engineer EXPIRES:08/30/20,
14835 SW 72nd Avenue Tel(503)598-8445
Portland,Oregon 97224 Fax(503)941-9281
SW MADDIE LANE WTh
2, N88'27'12"W 48.00'
201
9 vuE
18.00'
i�2'208
7.00, ■ 21.00'
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9
tri
7.00'
230
N AA•• 21.00' 0212
STAKEO UT
LOT 9 MADELINE HEIGHTS
44.05 SE 1/4 OF SEC 9, T2S, R1 W, W.M.,
CITY OF TIGARD
WASHINGTON COUNTY, OREGON
REGISTERED APRIL 2, 2018
PROFESSIONAL DRAWN: YVK CHECKED: SPF
588'02'07"E 48.00' 202 p,ND SURVEYOR SCALE 1"=20' ACCOUNT #293-009 .,A
Y:\293-009\DWG\L9MH
�[//(•/'" OREGON
JULY 12, 2005
SHAUN P. FIDLER
50333
NOTE: RENEWAL DATE DECEMBER 31. 2019 CMT SURVEYING AND CONSULTING
20330 SE HIGHWAY 212
THIS DRAWING IS NOT INTENDED TO BE USED FOR DAMASCUS, OR 97089
THE PURPOSES OF A MORTGAGE LOAN INSPECTION PHONE(503) 850-4672 FAX (503) 850-4590