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G ODESIGNk) FIELD REPORT
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Page 1 of 1
GDI Project: Polygon-164-03 Prepared By: Justin Juggert
Project Name: River Terrace East No. 3 -Phase 2 Date: 3/30/21
Location: 16973 SW Friendly Ln,Tigard,OR Report#: 27
Arrival: 0945 Departure: 1015
Weather: Overcast, 40's Permit#:
Site Visit Requested By: Adrian (Taylor Morrison) Met With (on site): Adrian (Phone)
Purpose: Evaluate subgrade for Lots 265-269
Outstanding Issues:
On arrival, Adrian (Taylor Morrison) informed me that crews had cut subgrade to finished elevations within Lots 265-
269, as shown on the attached site plan. I observed that crews had placed -1-2" of crushed rock over subgrade. I
observed subgrade to consist of brown silt(excavation sidewalls). Using a Y2"foundation probe I evaluated the
relative consistency of the subgrade through crushed rock section. Resulting penetrations indicated generally stiff
subgrade conditions.
Based on our observations and probing it is our opinion that the subgrade observed today, in areas observed today,
has been prepared in general accordance 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 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 GeoDesign project manager,as indicated by initials in the"Reviewed By'section.
Signature: ct)-14,,
9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
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I "RIVER TERRACE NORTHEAST" -------
LOTS 1-5
HUB AND TACK CERTIFICATION
NE AND SE 1/4 SEC. 6, T 2 S, R 1 W, W.M.
CITY OF' TIGARD, WASHINGTON COUNTY, OREGON
SURVEYED MARCH 10, 2021
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PREPARED FOR:
TAYLOR MORRISON, INC. I
703 BROADWAY ST., SUITE 710
VANCOUVER, WA. 98660
LOT 1
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o RENEWS: 12/31/2022
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°' I, NICK A. LAFOND, A REGISTERED PROFESSIONAL LAND SCALE
9 SURVEYOR IN THE STATE OF OREGON, HEREBY CERTIFY THAT 20 0 10 20
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I HAVE ACCURATELY SURVEYED AND STAKED THE ` _ li
FOUNDATION ENVELOPE FOR LOTS 1-5 OF "RIVER TERRACE c
1 INCH = 20 FEET
o NORTHEAST".
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5 DRAWN BY: T2 DATE: 3/30/21
PACIFIC COMMUNITY DESIGN
REVIEWED BY: NLF DATE: 3/30/21
Z 395-061 PLANNING - ENGINEERING - SURVEYING
PROJECT NO.: (503) 941-9484
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GEODESIGNk FIELD REPORT
Page 1 of 1
GDI Project: Polygon-164-03 Prepared By: Bret Moskal
Project Name: River Terrace East No. 3 -Phase 2 Date: 4/21/21
Location: 16973 SW Friendly Ln,Tigard,OR Report#: 29
Arrival: 0845 Departure: 0945
Weather: Sunny, 50's Permit#:
Site Visit Requested By: Adrian (Taylor Morrison) Met With (on site): Adrian (Phone)
Purpose: Evaluate Slab Base within lots 265-269
Outstanding Issues:
Upon arrival, I was informed by Adrian (Taylor Morrison)that onsite earthwork crew had prepared the slab base
section for the living spaces within lots 265-269. I was informed that base section was approx. 24in thick and
consisted of recycled concrete sourced from Tigard Sand &Gravel. Compaction efforts were completed utilizing a
large walk behind plate compactor. Using a Troxler 3430 nuclear density gauge, I evaluated the compaction of the
fill and compared the results against a lab produce proctor value of 119.3pcf 14.3-precent optimum moisture
content. Initial testing did not meet our compaction recommendations of 95%compaction of maximum dry density
value. We recommended moisture conditioning the material and applying additional compaction efforts. After re-
compaction efforts slab base section met our recommendations. I observed the pin resistance (number of blows on
a%"diameter steel pin with a 6Ib hammer to drive the pin approx. 12in into the material)to indicated densely
compacted material.
Based on our observations, density testing, and pin resistance it is our opinion that the slab base section observed
today, in areas observed today, 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 GeoDesign project manager,as indicated by initials in the"Reviewed By"section.
Signature:
Bret Moskal
9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 I www.geodesigninc.com
MINDESIGN NUCLEAR DENSITY GAUGE DATA
GDI Project: Polygon-164-03 Project Name: River Terrace East No. 3 Phase 2 Date: 4/21/2021
Sampled By: btm Project Location: 16973 SW Friendly Ln. Page: 1 of 1
Material Source Maximum Density:pcf(required) Optimum Moisture
A 1.5"-0 CR Tigard Sand & Gravel A 132.6 pcf (ASTM Dl 557) A 10.6%
B Baker(Farmington) Lvl II, 1/2"HMAC B 155.5 RICE B NA
C 3/4"-0 CR Tigard Sand &Gravel C 128.5 pcf (ASTM D1 557) C 12.6%
D Recycled Concrete (Tigrad S&G) D 119.3 pcf D 14.3%
E E E
*Estimated depth below planned grade (feet)
Test
Date Location Elevation* Fill Type Compactor Density
No. Moisture - Maximum Required
1 4/21 Lot 269 Slab Base- See Site Plan —0' D Lrg Plate 108.0 9.0% 91% 95%
2 4/21 Lot 268 Slab Base - See Site Plan —0' D Lrg Plate 108.7 6.7% 91% 95%
3 4/21 Lot 267 Slab Base - See Site Plan —0' D Lrg Plate 116.4 11.2% - 98% 95%
4 4/21 Lot 266 Slab Base -See Site Plan —0' D Lrg Plate 105.3 7.4% 88% 95%
5 4/21 Lot 266 Slab Base (Retest#4)-See Site Plan —0' D Lrg Plate 112.9 8.2% _ 95% 95%
6 4/21 Lot 265 Slab Base -See Site Plan —0' D Lrg Plate 114.0 7.1% _ 96% 95%
7 4/21 Lot 268 Slab Base (Retest#2)-See Site Plan —0' D Lrg Plate 113.8 9.6% 95% 95%
8 4/21 Lot 269 Slab Base (Retest#1)-See Site Plan —0' D Lrg Plate 114.7 8.4% 96% 95%
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