Report 1-73' O 54kakct-
G EODESIGNzu FIELD REPORT
Page 1 of
GDI Project: Polygon-130-05 Prepared By: Daniel Stai
Project Name: River Terrace Northwest Date: June 3, 2016
Location: Scholls Ferryr ryRoad and Roy Rogers Report#: 109
Arrival: 1545 Departure: 1620
Weather: Sunny, 80's-90's Permit#: TBA
Site Visit Requested By: Mike (Polygon) Met With (on site): Mike, Richard (Strauss)
Purpose: Evaluate Swim Center Footing Subgrade
Outstanding Issues: FR25A(11/11) Plug Tract B Stormwater Pond Sinkhole
FR50(1/13/16) Lot 122-125 retaining wall failed density test
FR 51 (01/14/16) Lot 122 to 123 retaining wall failed density test, lot 103 retaining wall
backfill too dry.
Upon arrival, I observed that Strauss had excavated swim center footings. Subgrade appeared to consist of brown
silt; minor sand. I used a Y2"diameter steel 'T'probe to evaluate relative consistency of footing subgrade. Subgrade
generally appeared stiff to very stiff based on resistance to penetration of the probe.
I observed what appeared to be fill in a section;oof footing subgrade in the southeast corner. Soil appeared to be
dark brown silt; minor gravel and tracel6rgank;which consisted of sticks and pockets of hay. I also observed that
the soil also had an "organic"odor. I asked Richard to pot hole into the soil. Dark brown silt only extended down
approximately 6 to 8 inches in the area. I asked Richard to remove the soil. I recommended that over excavated
area be backfilled with appropriately compacted granular fill. �— w l`;c 1— 1.'"" cots..p1e--a
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Based on our observations, it is our opinion that swim center footing subgrade observed today has been prepared in
general accordance with project requirements and our geotechnical recommendations.
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Distribution:
Attachments: Site Plan (1), Photo(1)
Reviewed by: $ (AO
This report presents opinions formed as a result of our observation of activities relating to geotechnical engineering or environmental -. .. My on the.• comply • plans •
specifications throughout the duration of the project irrespective of the presence of our representative.Our work does not include • '1.. or direction of " the con, ;• s • •
or agents. Our firm is not responsible for site safety.This field report is a DRAFT representation of our field observations,. • • •preliminary The report• only•.
considered final upon review of the GeoDesign project manager,as Indicated by initials in the"Reviewed By"section.
Signature:
15575 SW Sequoia Parkway,Suite 100 I Portland,OR 97224 I Off 503.968.8787 I Fax 503.968.3068