Report JUN -16 -1998 12:25 ANKROM MOISAN S (T-I-- CfCrEa' 503 245 7710 P.02/02
67 0
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0 AGRA E & Environmental
EN INEERdNG 0.cdiAL SOWTIONS
. MEMORANDUM
7477 SW Tech Center Drive
Portland, Oregon 97223
Phone No. (503) 639 -3400
. Fax No. (503) 620 -7892
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• agrapdx @agraus.com
TO: Mr. Ron King DATE: June 15, 1998
FROM: Heather Devine
FILE: 8
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. RE: Western Family Offices •
This memo is to provide you with information regarding at the the end of S.W. Sandberg Street
proposed Western Family Foods office building site s ait coefficient are also provided.
in Tigard, Oregon. The UBC soil profile and design
field
The potential for liquefaction within the site o `Na eearthquake ' haz d and the
from
investigation performed for this site, from published
available geotechnical information for surrounding sites. Based on The
Series entitled e Relative Earthquake hquake
and Mineral Industries publication GMS-91 Geologic
Hazard Map of the Lake Oswego Quadrangle,
Clackamas, Multnomah, and Washington
Counties, Oregon" the site is not mapped in a areas of least liquefaction hazaadentln additions
are mapped as liquefaction zone 1, defined as
the near surface soils at the site classify as low plasticity clays . It is therefore AEE's opinion
that the site soils are not susceptible to liquefaction.
AEE recommends the UBC soil profile S1 and soil coefficient 1.0 be used for design.
If you have any questions regarding this memo please contact the undersigned at your
convenience.
. (:::17,brialki.
Cf4Licide.A..4a,c, .
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Stuart Albrig =.',
Heather Devine == '9 "'
Staff Engineer Associate G 02 ' '
Mae _
o: Jeff Los, Ankrom and Moison Associated Architects �o'�'
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Western Family Foods, Inc. 8-61M-09722-0
Subsurface Exploration and Geotechnical Engineering Report March 13, 1998
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Tigard, Oregon • Page 1
1.0 INTRODUCTION •
This report prepared by AGRA Earth & Environmental, Inc. (AEE) presents the results of our
subsurface exploration and geotechnical engineering study for the proposed Western Family
Foods new office building for Western Family Foods, located at the end of S.W. Sandberg
Street, west of their current facility, in Tigard, Oregon. The location of the site is shown on
the Site Location Map, Figure 1. The proposed site development is shown on the Site Plan,
Figure 2.
The purpose of our work was to establish general surface and subsurface conditions on which
to base our conclusions and recommendations for site development, and other geotechnical
construction considerations. Our scope of work included review of geotechnical reports
prepared for the project area, conducting a subsurface exploration, laboratory testing, and
geotechnical engineering analyses. At this time, a preliminary grading plan is not available
for review; however, preliminary development plans were discussed with Mr. Jeff Sackett of
Trammell Crow Company.
This report has been prepared for the exclusive use of Western Family Foods, Inc., and their
agents, for specific application to this project in accordance with generally accepted
geotechnical engineering practice. This report may not contain sufficient information for
purposes of other parties or other uses. Signed authorization to proceed with this work was
granted on February 24, 1998 by Western Family Foods, Inc.
2.0 SITE AND PROJECT DESCRIPTION
2.1 SITE DESCRIPTION
The project site is approximately 1 acre, and is located on the south side of the cul -de -sac
at the end of S.W. Sandberg Street (Figures 1 and 2). The site is situated on a gentle south -
facing slope. The elevation difference between the northern and southern site boundaries is
approximately 20 feet. Vegetation at the site predominantly consists of short grasses and
widely spaced filbert trees. No structures are located on the site. The site is bordered by
commercial and light industrial development.
2.2 PROJECT DESCRIPTION
The proposed project consists of constructing a two -story commercial building to replace the
existing building.. Site grading will consist of cuts and structural fills on both streets and
building areas. The project is still in preliminary planning and cut heights, fill heights, and
new utility locations have not been determined at this time.
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AGRA Earth & Environmental
ENGINEERING GLOBAL SOLUTIONS