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7312 SW Durham Road
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Tel (503) 598 -8445 • Fax (503) 598 -8705
July 24, 2008
Job Number 08 -1473
Luby Building LLC
7360 SW Hunziker St., Ste. 206
Tigard, OR 97223
Fax503- 620 -3356 .
RE: SOIL ENGINEER'S DENSITY TESTING SUMMARY
LUBY BUILDING SITE WORK
TIGARD, OREGON
GeoPacific Engineering, Inc. performed on -call testing at the above referenced project for the period from April
30, 2008 through June 23, 2008. Proofrolling was performed on fills beneath the streets, and density testing was
performed on storm drain trench fill, asphalt concrete for Hermosa Way and the parking lot, and retaining wall
backfill for Lock -n -Load walls designed by David A. Hall /Structural Engineering. A summary of our density
testing and field reports are attached. Based on our test results, tested areas met the required project
compaction. The field soil inspection summary contains our observations on geogrid type and placement.
Our reports pertain to the materials and locations tested /inspected only. We trust this information meets your
needs.
Sincerely,
GeoPacific Engineering, Inc.
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EXPIRES: 06/30/20
James D. Imbrie, P.E., C.E.G.
Geotechnical Engineer
Attachments: Field Soil inspection Summary
Summary of Field Soil Density Tests
Summary of Field Asphaltic Concrete Density Tests
Field Soil Observation Summary Pace I of?
Field Soil Observation Summary
Project: Luby Building
Job number: OR 08 -1473
Project address: 7450 SW Hermoso Way, Tigard
Daily Reports
5/15/08: GeoPacific geologist, Ben Cook, was on site to observe Lock -n -Load
wall subgrade soils in the wall keyway cut.
Currently areas where wall subgrade has been cut to bottom of wall subgrade
include the southern section of the front,right parking wall north to the tree
zone and the front left parking wall.
Exposed soils in the notes areas consist of stiff native brown, moist clayey
silt. Soils appear to have adequate bearing strength to support applied wall
load. GeoPacific should observe 6 inch leveling base course compaction prior
to wall construction.
5/22/08: GeoPacific geologist, Ben Cook, was on site to observe wall subgrade .
soils at front left and front right wall areas. At subgrade elevation, soils
exposed consist of native brown clayey silt, stiff, very moist. Soils appear
to be stiff enough to provide adequate bearing capacity for applied wall loads.
6 inches of 3/4 " -0 Tigard Sand & Gravel has been tightly compacted into wall
base and appears adequate to begin wall construction in these areas.
5/28/08: GeoPacific geologist, Ben Cook, was on site at 11:00 am to observe
geogrid installation at the 1st grid layer on the front right parking wall.
Grid lengths are 5.5 feet long, exceeding required grid length. Grid type is
Strata Grid 55, oriented correctly.
1:36 pm was onsite to observe grid installation at the front right parking wall.
The 2nd grid layer has been installed at the top of the 3rd block exceeding
recommended grid lengths. South of the tree zone grid lengths were measured at
5.5 feet. Rounding the corner to the east and then to the north grid lengths
are 9 feet. Grids have been installed in the correct orientations.
Observed wall drain piping has been installed at the keyway cut and tied into
street storm lines on the south end. Pipe consists of a sock covered 4 inch
plastic pipe.
5/29/08: GeoPacific geologist, Ben Cook, was on site to observe geogrid
installation at the front left parking wall. Geogrid has been installed at the
top of block 1 measuring 9 feet long. Grids have been oriented correctly and
are strata grid 55. The drain pipe has been installed at the wall keyway
backcut.
5/31/08: GeoPacific technician, Jason Burgess, was on site a few times to
observe construction of the northeast set of Lock -n -Load retaining walls.
Compaction testing on the crushed rock backfill has been passing better than
95% of modified proctor, on areas tested. South wall, running east to west has
a large fir tree behind it, the roots are very large and are protruding almost
the wall face. Wall contractor has been doing a pretty good job of working
around them and still placing compactive effort on the backfill. Geogrid has
been placed in the center of the 2nd block all the way around the wall. It is
not quite as long on the south wall because of the roots, maybe 3 feet. The
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Field Soil Observation Summary Pate 2 of2
rest of the grids are between 4 & 5 feet deep, placed the correct direction
(Syntene 55).
Upon second visit wall contractor has placed 4 to 5 foot deep geogrid in the
middle of the 4th block.
6/10/08: GeoPacific geologist, Ben Cook, was on site to observe street
improvement on SW Hermosa Way 1/2 street. Observed subgrade soils on the
north /south section, consist of native brown clayey silt, very stiff. At the
bend to the east /west section subgrade soils consist of a gray -blue clayey silt
fill soil, medium stiff to very stiff. These fill soils were likely placed
during time of street construction. The observed existing rock section in this
location was only 3/4 inches which is likely responsible for observed crumbling
asphalt.
The cured rock section being installed consists of 15 inches of loose rock over
geotextile fabric and 4 inches of asphalt.
In my opinion overexcavation of the observed fill soils is not required. Should
soft spots develop and show during base rock proofroll, cost of localized
overexcavation will be far less than thickening of the current rock section.
This cost balance is the primary motivation for me to not recommend whole area
overexcavation as the majority of observed subgrade soils are stiff to very
stiff.
6/20/08: GeoPacific geologist, Ben Cook, was on site to observe a proofroll at
SW Hermosa Way 1/2 street improvement base rock section. Base rock section is
visually well compacted and appears to have adequate moisture content.
Proofrolling was done with a haul truck loaded with native on -site soils from a
slope cut. Approximate vehicle weight 40 -50 pounds. No movement of pumping
was visible during the inspection. Base rock appears adequately compacted for
A/C paving.
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Summary of hied{ Soil Density Tests I'age 1 o12
Summary of Field Soil Density Tests
Project: Luby Building
Job number: OR 08 -1473
Client: Luby Building LLC Summary Coding and Explanation
Date Max Field Dry Comp Comp
Test Elev C.P. Test
of Test location density moist density spec result
test number (ft) ( %) (Pet) (%) (Pa) (aka) (%) status -
4/30/08 DT1 Storm drain trench Hermosa Street FG 133.0 7.4 121.7 90 92 Passed
(13 +00)
Storm drain trench Hermosa Street
4/30/08 DT2 FG 133.0 7.6 120.8 90 91 Passed
(13 +70)
4/30/08 DT3 Storm drain trench Hermosa Street FG 133.0 3.9 119.9 90 90 Passed
(14 +00)
4/30/08 DT4 1k 14+25) Storm drain trench Hermosa Street -4 133.0 6.9 F120.4 90 91 Passed
5/22/08 I DT5 Rain drain in Parking area north 1 +2/FG 133.0 5.3 129.1 901 97 Passed
5/22/08 DT6 Rain drain in Parking area north middle +2/FG 133.0 4.7 128.3 90 97 Passed
15/22/08 DT7 Rain drain in Parking area middle +2 /FGI 133.0 5.9 130.6 1 90 98 Passed
5/22/08 I DT8 Rain drain in Parking area south middle 1 +2/FG . 133.0 6.1 121.7 90 92 Passed
5/22/08 DT9 Rain drain in Parking area south +2/FG 133.0 5.2 120.6 90 1 91 Passed
5/30/08 RW1 [Northeast walls north wall west +16" 133.0 6.3 126.7 951 95 Passed
5/30/081 RW2 Northeast walls north wall east ( +16" 133.0 7.8 127.1 95 961 Passed
5/30/08 RW3 Northeast walls east wall north +16" 133.0 8.2 127.9 951 96 Passed
5/30/08 RW4 Northeast walls east wall south 1 +16" 133.0 9.0 126.5 95 95 Passed
5/30/08 RW5 Northeast walls southwest wall middle ' +16 "1 133.0 6.7 128.9 95 97 Passed
5/31/08 RW6 Northeast walls north wall west +32" 133.0 6.9 1 128.5 95 97 Passed
5/31/08 RW7 Northeast walls north wall east 1 +32" 1 133.0 7.6 126.8 95 95 Passed
5/31/08 I RW8 Northeast walls east wall north +32" 133.0 6.9 126.5 95 95 Passed
5/31/08 RW9 Northeast walls east wall south +32" 133.0 1 6.5 127.5 95 96 Passed
5/31/081 RW 10 Northeast walls south wall middle +32" 1 133.0 7.3 1 130.7 951 98 Passed
5/31/08 1 RW11 Northeast walls north wall middle FG1 133.0 7.6 128.1 951 96 Passed
5/31/08 RW 12 Northeast walls north wall east FG 133.0 6.1 129.1 95 97 Passed
5/31/08 RW13 1 Northeast walls east wall north FG 133.0 6.9 1 126.7 95 95 Passed
5/31/08 RW14 Northeast walls east wall! south FG 133.01 7.0 127.0 951 961 Passed
5/31/08 RW15 Northeast walls southwest wall middle FG 133.0 7.3 128.6 951 97 Passed
15/28/08 1 RW16 Front right parking wall south +2 133.0 9.5 129.1 951 97 Passed
5/28/08 RW17 Front right parking wall middle +2 133.0 8.7 128.3 95 97 Passed
5/28/08 RW18 Front right parking wall north +2 133.0 9.3 128.1 951 961 Passed
5/28/08 RW19 Angled areas @ tree zone +2 133.0 8.3 129.7 95 98 'Passed
5/28/08 RW20 Lower wall north of tree zone north +2 1 133.0 1 9.1 130.5 9511 98 Passed
1 lI II -- iI - I1 - II I I 11
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Summary of Field Soil Density Tests Page 2 of2
15/28/0811 RW2I 1lLower wall north of tree zone south II +2 11 11 133.011 8.411 129.4 951 97 IPassedl
5/29/08 RW22 Lower wall north of tree zone south +4 133.0 7.9 127.8 95 96 Passed
5/29/08 RW23 Lower wall north of tree zone middle +4 133.0 8.3 129.5 95 1 97 Passed
5/29/08 RW24 Lower wall north of tree zone north +4 133.0 9.6 130.5 95 98 Passed
5/29/08 RW25 Front left parking wall west +2 133.0 9.1 129.1 95 97 Passed
5/29/08 RW26 Front left parking wall middle +2 133.0 9.8 128.1 95 96 Passed
5/29/08 RW27 Front left parking wall east +2 133.011 9.7 129.7 95 98 Passed
5/30/08 RW28 Southwest corner of building +5 133.0 5.0 128.2 95 96 Passed
5/30/08 1 RW29 Southwest corner of building +6 133.0 6.4 127.0 95 96 Passed
5/30/081 RW30 Center of western wall I +5 133.0 5.8 126.3 95 95 Passed
5/30/08 : RW31 Northeast corner of builidng +6 133.0 6.0 128.6 95] 97 Passed
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Summary of Field Asphalt Density Tests Page 1 of 1
Summary of Field Asphaltic Concrete Density Tests
Project: Luby Building
Job number: OR 08 -1473
Project address: 7450 SW Hermoso Way, Tigard
Page #1
Rice density: 152.7 Marshall value: Method of test: Indirect Serial #: 34418
Description: "C" Mix from Knife River Coffee Lake
Date Test • Lift In Compac
of number Test location number place -
test density tion
6/23/08 1 SW Hermosa Way 1/2 street south end 2 143.11 93.7
6/23/08 2 SW Hermosa Way 1/2 street +75' north 2 141.2 92.5
6/23/08 3 SW Hermosa Way 1/2 street +150' north 2 142.2 93.1
6/23/08 4 SW Hermosa Way 1/2 street north end 2 141.2 92.5
6/23/08 5 SW Hermosa Way 1/2 street west end 2 142.2 93.1
6/23/08 6 SW Hermosa Way 1/2 street +75' east 2 142.8 93.5
6/23/08 7 SW Hermosa Way 1/2 street +150' east 2 141.6 92.7
6/23/08 8 SW Hermosa Way 1/2 street east end 2 142.2 93.1
6/23/08 9 Upper parking area east 1 141.4 92.6
6/23/08 10 Upper parking area middle 1 142.8 93.5
6/23/08 11 Upper parking area west 1 141.6 92.7
6/23/08 12 Lower parking area north 1 140.6 92.1
6/23/08 13 Lower parking area middle 1 141.7 92.8
6/23/08 14 Lower parking south 1 141.9 92.9
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Summary of held Asphalt Density Tests Page 1 of I
Page #2
Rice density: 154.8 Marshall value: Method of test: Indirect Serial #: 34418
Description: "B" Mix from Knife River Coffee Lake
Date Test Lift In Compac
of number Test location number place -
test density tion
6/23/08 1 SW Hermosa Way 1/2 street south end 1 144.7 - 93.5
6/23/08 2 SW Hermosa Way 1/2 street +75' north 1 143.3 92.6
6/23/08 3 SW Hermosa Way 1/2 street +150' north 1 145.0 93.7
6/23/08 4 SW Hermosa Way 1/2 street north end 1 143.2 92.5
6/23/08 5 SW Hermosa Way 1/2 street west end 1 145.2 93.8
6/23 /08 6 SW Hermosa Way 1 /2.street +75' east 11 144.1 93.1
6/23/08 7 SW Hermosa Way 1/2 street +150' east 1 143.2 92.5
6/23/08 8 SW Hermosa Way 1/2 street east end 1 144.9 93.6
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