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EODESIGNN FIELD REPORT
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GDI Project Polygon-129-03 Prepared By: Dan Boileau
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Project Name: River Terrace East _ Date: 3/19/18
Location: SW Scholls Ferry&Roy Rogers,Bvrtn. Report#: 213
Arrival: 0930 Departure: 1100
Weather: Overcast, 40's Permit#: TBD
Site Visit Requested By: Ken (Polygon) Met With (on site): Ken
..........
Purpose: Observe lot 93 subgrade,walls north of lots
Outstanding Issues: Proof roll road and curb base rock and repair as needed before paving
FR-58 (12/06) Decommission temporary storm and sewer lines through Tract E
FR-177 soft fill from slope cut in lots 153, 154 and 155
tot 93-Subgrade
I.observed crews had excavated to various planned subgf•ade elevations and placed approx. 2"of compacted (small
walk behind vibratory smooth plate)%"-0 crushed rock. Resistance to penetration WO"diameter steel foundation
probe) indicates medium-stiff to stiff brown silt subgrade conditions.
Wall Subgrade
While onsite, I was asked to observe walls north of lots 194-207. Brown silt subgrade in areas observed today
probed medium-stiff. I observed walls for lots 203-207 had been placed. Crews indicate Geotextile Fabric had been
placed over subgrade, perforated drain pipe had been placed and open grade drain rock had been placed. Crews
indicate Geogrid (approx. 5' long) had been placed every 16"within wall backfill. Crews indicate Baker(Farmington)
"-0 had been placed in approx. 4" lifts and compacted via walk behind vibratory smooth plate.Top soil had been
placed over the majority of constructed walls.Areas where topsoil had not been placed, crews indicate were not
ready for testing at the time of my visit. I understand density testing recommendations for wall backfill have been
provided to Polygon representative by Shawn Dimke (Geo Design, Project Manager).
Conclusion
Based on our observations and probing, it is our opinion that subgrade areas,where observed today and indicated
on attached site plan, have been prepared in general acc.prdance with our geotechnical recommendations.
Distribution:
Attachments: Site Plan (1)
Reviewed by:
This report presents opinions formed as a result of our observation of activities relating to geotechnical engineering or environmental services.We rely on the contractor to comply with the plans and
specifications throughout the duration of the project irrespective of the presence of our representative. Our work does not includes••s ',on or direction of the contractor,the contractors employees
or agents. Our' firm is not responsible for site safety.This field report is a DRAFT representation of our field observations,testing,. "'mbtare recommendations,The report can only be
considered final upon review of the GeoDesign project manager,as indicated by initials in the"h i,.. ed By" be
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Signature: %,
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9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
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CITY OF TIGARD, WASHINGTON COUNTY, OREGON
SURVEYED MAR„ri 13, 2018
PREPARED FOR: SW SNOVVDALE STREET
POLYGON NORTHWEST COMPANY
703 BROADWAY ST., SUITE 510
VANCOUVER, WA, 98660 — —
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cl RENEWS:6/30/2019 ,
.F. I, TRAVIS C. JANSEN, A REGISTERED PROFESSIONAL LAND SCALE
6. SURVEYOR IN THE STATE OF OREGON, HEREBY CERTIFY THAT 20 0 10 20
a i HAVE ACCURATELY SURVEYED AND STAKED THE OFFSETS 111160MMillialni1110.1./INI
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53 TO THE FOUNDATION ENVELOPE FOR LOT 93 OF THE PLAT I INCH = 20 FEET
'.:t. OF "RIVER TERRACE EAST",
? DRAWN BY; FAA
DATE: 3/1 5/18 .'
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PACIFIC COMMUNITY DESIGN
,QREVIEWED BY: T,, DATE' 3 /15i1
PLANNING - ENGINEERING - SURVEYING
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PROJECT NO.- 395-041 (503) 941-9484