Report (58) e s
DESWGNU FIELD REPORT
Page 1 of 2
GDI Project: Polygon-129-03 Prepared By: Bret Moskal
Project Name: River Terrace East Date; 7/21/17
Location: SW Sholls Ferry&SW Roy Rogers, Report#: 143
Beaverton
Arrival: 1350 Departure: 1515
Weather: Sunny, 80's Permit#:
Site Visit Requested By: Spencer(NEI) Met With(on site): Spencer(Via phone), NEI
crew, onsite earthwork crews
Purpose: Evaluate:Lots 145 &146 footing subgrade,Temporary parking lot, structural fill
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
At time of arrival I observed three earth work crew onsite in the process of preparing subgrade and fill.
Lot 145& 1
I observed that one of the onsite earthwork crew was in the process of cutting footing subgrade for model homes
within lots 145& 146. I observed the subgrade to consist generally of structural fill material with areas of exposed
basalt. Using a/2"diameter steel foundation rod I probed the footing subgrade for the building within these lots.
Probing indicated stiff subgrade (Probing basalt I hit immediate refusal). I was informed there will be no footing
base rock.
Terrtuorary Parking j..ot
I observed that one of the onsite earthwork crew was in the process of preparesarea within lots 139& 140 for a
temporary parking lot for model homes. I was informed that crew placed approx. 4"of 3/."minus crushed rock on
the surface of structural fill subgrade and there will be an approx. 2"AC section. Compaction efforts were completed
utilizing a large single,smooth drum roller. I observed no to negliable deflection under the roller during compaction
efforts. Using a1/2"diameter steel foundation rod I probed the parking area base rock. Probing indicated dense base
rock. I was informed AC section would be removed at a later date and subgrade repair before construction of
building.
Structural Fill
.............................
While onsite I was informed by NEI that they had placed approx. l' to 1.5' of native fill material within lots 166-170
(see site plan for details). Compaction efforts were completed utilizing a CAT 8150pad foot compactor. Using,
Troxler 3430 nuclear density gauge I tested the relative density of the fill and compared the results to a field
adjusted proctor value of 1 16.Opcf at 16.3 percent optimum moisture content(proctor value was adjusted due to
amount of rock present in testing areas). 92%compaction of optimum dry density value is required to meet our
recommendations.Areas tested met our recommendations. I observed 17 and 20 blows on a%2"diameter steel pin
with a 6-lbs hammer to drive pin approx. 12"into material, indicating density compacted fill.
Based on our observations, testing,and probing,areas of observed fill, subgrade, parking area base rock,indicated
on attached site plan have been prepared in general accordance with our geotechnical recommendations.
15575 SW Sequoia Parkway,Suite 100 I Portiana,OR 97224 I Off 503.968.8787 I Fax 503.968.3068
• • .,
DEsIGNz
FIELD REPORT
Page 2 of 2
Distribution:
Attachments:Site Plans(1), NDDS(1)
Reviewed by: SMD
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 indude supervision or direction of the contractor,the contractor's employees
or agents.Our firm Isnot responsible for site safety.This field report is a DRAFT representation of our field observations,testing,and preliminary recommendations: port can only be
considered final upon review of the GeoDesign project manager,as Indicated by initials in the'Reviewed Ri+'section,
FtSignature: `.
15575 SW Sequoia Parkway,Suite 100 I Portland,OR 97224 I Off 503.968.8787 I Fax 503.968.3068
G
DESIGN' NUCLEAR DENSITY GAUGE DATA
GDI Project: Polygon-I 29-03 Project Name: River Terrace East Date: 7/21/2017
Sampled
P By: btm Project Location: sw Sholls Ferry&sw Roy Ropers,Beaverton Page: 1 of 1
Material Source Maximum Density:pcf(required) Optimum Moisture
A 3/4"-O CR Baker Farm A 125 pcf(D698) A 1 3.5%
B 3/4"-0 CR Baker Farm B 119.2
pcf(D698) B 12.8%
C 3/4"-0 CR- Baker Farm C 127.7 pcf(D1557) C 12.0%
0 Onsite Soil D 1 16.0 pcf(Field Adjusted) D 16.0%
*-Elevation relative to blow grade
Test .Date % -- % %;
No. Location Elevation* Fill Type Compactor Density Moisture Maximum Require
1 7/21 Structral Fill-Lots 169-170 0 A CAT 815D 115.5 13.6 100% 92
2 7/21 Structral Fill-Lots 168-167 0 A CAT 815D 108.6 12.6 94% 92
Polygon-129-03_FR143_072117_NDDS_btm
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G DESIGNZ NUCLEAR DENSITY GAUGE DATA
GDI Project: Polygon-129-03 Project,Name: River Terrace East Date: 7/21/2017
Sampled By: btrn Project Location: SW Sholls Ferry&SW Roy Rogers, Beaverton Page: 1 of 1
Material Source Maximum Density:pcf(required) Optimum Moisture
A 3/4"-0 CR Baker Farm A 125 pcf(0698) A 13.5%
B 3/4"-0 CR Baker Farm B 119.2 pcf(D698) B 1 2.8%
C 3/4"-0 CR- Baker Farm C 127.7 pcf'(D1557) C 1 2.0%
D Onsite Soil D 116.0 pcf(Field Adjusted) D 16.0%
*-Elevation relative to blow grade
Test Date Location Elevation* Fill Type Compactor Density % % %
No. Moisture Maximum Require
1 7/21 Structral Fill-Lots 169-170 0 A CAT 815D 115.5 13.6 100% 92
2 7/21 , Structral Fill-Lots 168-167 0 A CAT 815D 108.6 12.6 94% 92
Polygon-129-03_FR 143_072117_N D DS_btm
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1'14,67- 01-7-7a247
"RIVER TERRACE EAST`"
PORTIONS OF LOTS 14.E AND 746
HUB AND TACK CERTIFICATION
NE & SE 1/4 SEC. 6, T 2 'S, R 1 W, VW:M.
CITY OF TIGARD, WASHINGTON COUNTY, OREGON
SURVEYED JULY 1S. 2017
I I I I
#PREPARED FOR:
POLYGON NORTHWEST COMPANY LOT I [ LOT
I 1 �O�
T
109 E. 13TH ST._
VAMC ?UVEB WA. 98660 I
S89*58'430E
8.-°° S89'S8'43"E 37.00'
\ 1
1 ___ ___ ___ ___ ____ 13_ ___ .....__ ................. ...4'..:: I .'-'......- ''--- ---. •-•
= .`"*4 LOT 146 I LOT 145 LOT 144—
m
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ADJUSTED �
4DESCRIBED IN I
A , 1APPROVED. LOT> LINE I
-� c1 1 ADJUSTMENT CASE P
0. 0 INO. LLA201 -00008
{
' PUBLIC UTILITY '"" , _
EASEMENT
,x.
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tREGISTERED —— —----—1—i ——— ——T---——— —
.0 PRO FESSI01,4& I
x LAND SURVEYOR N8S S8 43 W 45.00
Qs
OREGON
x JULY 9,.2002
TRAVIS C.JANSEN
517°51
SW DESCHUTES LANE
RENEWS:6/30/2019
s Is TRAVIS C. JANSEN, A REGISTERED PROFESSIONAL LAND SCALE
SURVEYOR IN THE STATE OF OREGON,' HEREBY CERTIFY THAT 20 0 10 20
a< I HAVE ACCURATELY SURVEYED AND STAKED THE OFFSETS
TO THE FOUNDATION ENVELOPE FOR PORTIONS OF LOTS 145 1 INCH = 20 FEET
4 AND 146 OF THE PLAT OF 'RIVER TERRACE EAST".
DRAWN BY: GPS DATE: 7/21/17 PACIFIC COMMUNITY DESIGN
REVIEWED BY: . ICJ DATE: 7 21, E 7
- t}41 PLAN d G - ENGINEERING -SURVEYING
PR JECT No,-
J
0 } 949-9484