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[ DESIGN__ FIELD REPORT
Page 1 of 1
GDI Project: Polygon 1 13-05 Prepared By: Zane Rogers
Project Name: Roshak Ridge 6/30/2021
Location: SW Bull Mountain Road and SW Roy Report#: 194
Rogers Road, Tigard
Arrival: 800 Departure: 830
Weather: Sun, 70s Permit#: TBA
Site Visit Requested By: MEI Met With (on site): LMEI
Purpose: Observe lot 165-166 structural fill
Outstanding Issues: FR-186 1/14/21 Park Slope Failure
RESOLVED
Upon arrival, I observed MEI had moisture completed fill operations and prepared structural fill within Lots 165
and 166 as indicated on the attached site plan. I observed MEI had moisture conditioned (dried), placed, and
compacted approximately 4ft of fill on the north side of lots, tapering down to native material and cut within
southern portion of lots. I used a Troxler 3430 nuclear density gauge to evaluate compaction and moisture of
fill material. Tests were compared to an optimum dry density of 1 10pcf at 13.9% moisture. Tests performed
within fill area met recommended compaction of 92% of optimum.
After testing, I observed a proof roll of lot area using a fully loaded single rear axle water truck. In general,
negligible deflection and no rutting was observed under proof roll.
Based on observations and testing, it is our opinion that areas of structural fill observed today and where
indicated on the attached site plan has been prepared in general accordance with our geotechnical
recommendations
Distribution:
Attachments: Site Plan (1); NDGD(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 include supervision or direction of the contractor,the contractor's employees
or agents. Our firm is not responsible for site safety, This field report is a DRAFT representation of our field observations,testing,and preliminary recommendations. The report can only be
considered final upon review of the CeoDesign project manager,as indicated by initials in the"Reviewed By"section.
Signature: ='
9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
G EO DES IGNz NUCLEAR DENSITY GAUGE DATA
GDI Project: Polygon-1 13-05 Project Name: Roshak Ridge Date: 6/30/2021
Tested by: zmr Project Location: sw Bull Mountain Rd and Sw Roy Rogers Rd. Page: 1 of 1
Material Source Maximum Density:pcf(required) Optimum Moisture
A 3/4"-0 CR Baker - Farmington A 1 27.2 pcf(ASTM D1 557) A 1 3.9%
B 1" - 0 Recycle Conc.Tigard S&G B 119.3 pcf(ASTM D1 557) B 14.3%
C Onsite Brown Silt C 110.0 pcf(Field Adjusted) C 13.9%
*Depth below finished grade (feet)
Test % % %
No. Date Location Elevation* Fill Type Compactor Density Moisture Maximum Required
1 6/30 Lot 165/166 Fill 0' C Seg Pad 104.6 16.7 95% 92%
2 6/30 Lot 165/166 Fill 0' C _ Seg Pad 102.9 14.3 94% 92%
Polygon-1 1 3-05-1 0251 9-FR 163-NDGD-gjs.xls
1.