Report (28) Azt 5 r /> G szr
'4 ) Spm 14
ESIGNY FIELD REPORT
Pagel oft
GDI Project: Polygon-129-03 Prepared By: t Kyle Hanson
Project Name: River Terrace East Date: 2/14/18
Location: = SW Scholls Ferry&Roy Rogers,Bvrtn. Report#: 201
Arrival: 1045 Departure: 1245
Weather: Sunny, 50s Permit#: j TBD
Site Visit Requested By: = Spencer(NEI); Ken (Polygon) Met With (on site): Keywest crew, NEI Crew,
Spencer(phone), Ken(phone)
Purpose: I Observe wall backfill and lots 66, 173-175
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
Wall 21 &Wall N of SnowdaleSt
Upon arrival, I observed Keywest had compacted previously observed non-compacted backfill for Lock+Load wall 21
(see site plan and FR200). Crew were not backfilling during our site visit. I was informed that backfill material was
%" minus crushed rock sourced for Baker(Farmington). Compaction efforts were completed utilizing a large walk
behind plate compactor next to the wall and a small smooth drum roller for wall fill. Using a Troxler 3430 nuclear
density gauge, I tested the density of the granular backfill and compared the results against a lab produced proctor
(ASTM D1557)value of 127.2pcf at 13.6 percent optimum moisture content.Areas tested met or exceeded our
compaction recommendations of 95%compaction of maximum dry density value. I also observed subgrade for an
additional wall to be located north of Snowdale St. (see site plan). NEI crew informed me that 6"to 1' of crushed
rock base would be placed over the subgrade, which appeared to consist of brown sandy silt. I used a h"diameter
steel foundation probe to evaluate the consistency of the subgrade material and observed probe penetrations
indicated generally medium-stiff to stiff subgrade conditions today.
Lot 66
I observed base/subgrade for lot 66(see site plan); crew informed me that approximately 6"to 1'of%"-0 crushed
rock from Tigard Sand&Gravel had been placed over subgrade. Probe penetrations with a1/2"diameter steel
foundation probe indicated generally stiff subgrade conditions today through the granular base. Pin resistances of
the 1 foot thick backfill were observed. The number of one-handed blows required to drive a%"diameter steel
foundation probe 1 foot into the crushed rock indicated dense base conditions today.
Lots 1 73-1 75
NEI crew were not available to pothole/smooth surface spots for density testing. We recommend density testing of
the backfill material (see FR199)at the material surface and in contractor prepared potholes of approx. 2' in depth.
Conclusion
Based on observations, density testing, probing, and pin resistance, it is our opinion that the lots and wall
backfill/subgrade observed today,where indicated on the attached site plans, have been/are being prepared in
general accordance with our geotechnical recommendations(contingent on following with recommendation noted
above for Lots 173-175).
9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
� $ IGN.w FIELD REPORT
Page 2 of 2
Distribution:
Attachments: Site Plan(2); NDGD(1)
Reviewed by: SMD
This reportgrosents opinions formed as a result Mout obseniation of sgostedmical engtneeringnor stmeenntnental serti+iCeS,11€e rety on the commaor to comply with the plans and
spedficationsthroughout the dur of the projectirrespecthet of the presence of our representative,Our work does not Include supervision or dredion of the cormarton the contractor's employees
or Ourfrnsr k not responsible for site safety.This field report Is a DRAFT mpresernation of our field obseraatldrss,testn9,and pxerimirrary recommendations.The report can only be
considered final upon renew of the ceooesign privect manager.as Indicated*initials In the'Reviewed fat section
Signature: ,' ;
9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
"RI VER TERRACE EAST"
LOT 66
HUB AND TACK CERTIFICATION
NE & SE 1/4 SEC. 6, T 2 5, R 1 W, W.M,
-2 ----
CITY OF TIGARD, WASHINGTON COUNTY, OREGON h-4,c Zo /17–C7 0
-
SURVEYED JANUARY 3, 2018
PREPARED FOR:
SW LARKSPRING ST
POLYGON NORTHWEST COMPANY
703 BROADWAY ST., SUITE 510
VANCOUVER, WA, 98660 —
it,
a, ('.4
V.
S89.58'43NE 42.00' 1
4 _____ „
_ _ _ _ _ _
6' PUBLIC UTILITY--I w
EASEMENT
cst I A
- - .
.,..
..,
b••
b 0
a; 0 0
0
0)
co --4.00'
4.00'—..- LiJ LOT
LOTLOT
65 1.14
* 66 1‘,. 67
0 r... .7-
ta ..
, P
14,
p 0
0 0
o z
z
c
0
B-
t.,
in
REGISTERED
'
v-
1 0 1-,
93
U
0 PROFESSIONAL cd N: 0
4t,
tv 4,4
ii LAND SURVEYOR
II
0.. •
---
S89•58'43sE 42.00'
< OREGON
... JULY 9,2002
a.
--;:. TRAVIS C.JANSEN
Gito
57751
,-,
RENEWS:6/30/2019
-.•
.....c I, TRAVIS C. JANSEN, A REGISTERED PROFESSIONAL LAND SCALE
...
0 10 20
-1. SURVEYOR IN THE STATE OF OREGON, HEREBY CERTIFY THAT 20
fi., M60111.1mOimmOMM
- I HAVE ACCURATELY SURVEYED AND STAKED THE OFFSETS
.
''''.. TO THE FOUNDATION ENVELOPE FOR LOT 66 OF THE PLAT i INCH = 20 FEET
--; OF "RIVER TERRACE EAST".
( DRAWN BY: 12 DATE- 2/1/18
PACIFIC COMMUNITY DESIGN
9 REVIEWED BY: ICJ DATE: 2/1/18
PLANNING - ENGINEERING - SURVEYING
..._
PROJECT NO.: 395-041
(503) 941-9484