Blue Pool Safety OR DOT 126(1) _Final Pavement Memo.pdf

158377846

Memorandum Western Federal Lands Highway Division

610 E. Fifth Street Vancouver, WA 98661

DATE: January 20, 2023

TO: Matt Miller, Project Manager

FROM: Nassim Sabahfar, Materials Engineer

SUBJECT: Final Pavement Structure Recommendations

Blue Pool Safety and Access Enhancement

OR DOT 126(1)

Background

This memo provides final pavement structure recommendations for Blue Pool Safety and Access Enhancement project at Linn County, Oregon. The Blue Pool Safety and Access Enhancement project begins at the intersection of Oregon Route 126 (OR 126) with Forest Service Road 2600- 735 (FSR 2600-735) near milepost 10 and extends north along FSR 2600-735 for approximately 2,600 feet. In addition to extension on FSR 2600-735, the proposed enhancements include addition of a right turn lane off OR 126 and a new parking area capable of holding up to 100 vehicles.

Recommendations provided in this memorandum are based on testing of soil samples collected during sub surface explorations in August 2022.

Acronyms

AASHTO American Association of State Highway Transportation Officials ADT Average Daily Traffic FHWA Federal Highway Administration FSR Forest Service Road ESAL Equivalent Single Axle Load FLAP Federal Lands Access Program FLH Federal Lands Highways FP-14 Standard Specifications for Construction of Roads and Bridges on Federal

Highway Projects ODOT Oregon Department of Transportation OR Oregon Route PDDM Project Design and Development Manual WFL Western Federal Lands Highway Division

Subgrade Data

Subsurface investigations were conducted to characterize the soil type in the area to validate embankment foundation conditions and to use in design of pavement.

The investigation included 10 subgrade borings and was completed on August 16, 2022. Borings were advanced to five feet depth below ground surface or until advancement of the bit encountered refusal. Detail of location of subgrade borings and boring logs can be found in Geotechnical Investigation Results for Blue Pool Safety and Access Enhancements attached to this report as Appendix 1.

Out of 10 subgrade borings, three subgrade samples were selected for R-Value testing and were tested following AASHTO T 190 specification. Following AASHTO M 145, subgrade samples tested were classified as A-1-b (two samples) and A-2-4 (one sample) with R-values ranging from 69 to 74, corresponding to modulus values between 39,000 psi and 42,000 psi.

Traffic Data

In the Federal Lands Access Program (FLAP) application submitted by Oregon Department of Transportation and United States Forest Services for Blue Pool Safety and Access Enhancement project the Average Daily Traffic (ADT) and Seasonal Average Daily Traffic (SADT) are reported as 1,700 and 2,074, respectively. Trucks are reported to comprise 15% of the traffic.

Assuming that April through September are the months with higher number of visitors, the Annual Average Daily Traffic (AADT) for the road segment calculates to be about 1,900.

Using 15% for truck traffic and assuming that truck factor is 2.0 ESALs per truck and the annual truck volume growth rate is 2%, the 18-kip ESALs for a 20-year period design life is projected to be about 2,500,000.

Pavement Design Recommendation

Recommended asphalt concrete pavement design was developed using methods from the AASHTO 1993 Pavement Design Guide and guidance from Chapter 11 of the FLH Project Design and Development Manual (approved 2018). Pavement design variables are tabulated in Table 1.

Recommended pavement structure for the right turn lane to be constructed off OR 126, extension of the road on FSR 2600-735, and the new parking area are provided in Table 2, 3, and 4, respectively. Provided pavement structure recommendations are different from original WFL’s design and revised and strengthened following ODOT directions.

Table 1 - Pavement Design Variables; MP 5.7 – MP 6.4 Description Value Source Initial Serviceability 4.2 FLH PDDM 11.2.1.1 Terminal Serviceability 2 FLH PDDM 11.2.1.1 Reliability Level 75% FLH PDDM 11.2.2 Overall Standard Deviation 0.49 FLH PDDM 11.2.2 18-kip ESALs for a 20-year period design

2,500,000 Traffic Data section of the current report

Roadbed Soil Resilient Modulus 20,000 psi R-value test results and engineering judgement

Table 2 - Recommended Pavement Design for Right Turn Lane on OR 126 Thickness (inches)

Description

8 Asphalt Concrete Pavement (Section 403, estimated @ 1.94 tons/cuyd) 12 Roadway Aggregate, Method 2 (Section 302, estimated @ 1.97 tons/cuyd)

It is recommended that asphalt concrete pavement layer be placed in three lifts with two 3 inch lifts and one 2 inch lift with tack coat applied between the lifts. The 2 inch lift should be placed last.

Table 3 - Recommended Pavement Design for FSR 2600-735 Extension Thickness (inches)

Description

4 Asphalt Concrete Pavement (Section 403, estimated @ 1.94 tons/cuyd) 12 Roadway Aggregate, Method 2 (Section 302, estimated @ 1.97 tons/cuyd)

It is recommended that asphalt concrete pavement layer be placed in two equal lifts with tack coat applied between the lifts.

Table 4 - Recommended Pavement Design for The Parking Area Thickness (inches)

Description

3 Asphalt Concrete Pavement (Section 403, estimated @ 1.94 tons/cuyd) 8 Roadway Aggregate, Method 2 (Section 302, estimated @ 1.97 tons/cuyd)

It is recommended that asphalt concrete pavement layer be placed in one lift.

Special Contract Requirements

Materials will provide pavement special contract requirements (SCRs) if necessary.

Follow Up

Please notify Materials if changes to the assumptions occur which may require revisions to this preliminary pavement design memo.

cc: Materials/Pavement File

Appendix 1

Geotechnical Investigation Results for Blue Pool Safety and Access Enhancements

158377846

M E M O R A N D U M

610 E. Fifth Street Vancouver, WA 98661

DATE: December 01, 2022

TO: Matt Miller, PE Project Manager

FROM: Ryan Cole, CEG Engineering Geologist

SUBJECT: Geotechnical Memo 39-22 Geotechnical Investigation Results Blue Pool Safety and Access Enhancements

OR DOT 126(1)

Linn County, Oregon

INTRODUCTION

This memorandum provides results of a geotechnical investigation to inform proposed roadway and trailhead parking area design for the Blue Pool Safety and Access Enhancements Project.

The geotechnical investigation included a field scoping assessment and subsurface investigation. This memorandum includes geotechnical recommendations, final boring logs, and laboratory testing of selected samples for use by roadway and hydraulic designers.

PROJECT DESCRIPTION

The Blue Pool Safety and Access Enhancement project begins at the intersection of Oregon Route 126 (HWY 126) with Forest Service Road (FSR) 2600-735 near milepost (MP) 10 in Linn County, Oregon, and extends generally north along FSR 2600-735 for approximately 2,600 feet.

The project location is shown in ATTACHMENT 1 – PROJECT AND BORING LOCATIONS MAP. The subsurface investigation was primarily in support of verifying embankment foundation conditions and for collecting subgrade materials for testing within the footprint of a proposed widening for a left hand turn lane on OR 126 that will utilize FSR 2600-735 to access a proposed trailhead parking lot.

GEOLOGY

According to Orr and Orr (2012), the project site is located in the Cascade Mountains physiographic province, a 600-mile long range of mountains which are comprised of two volcanic regions: the older, broader, and deeply eroded Western Cascades, and the dominating, snow-capped peaks of the younger, more easterly volcanoes of the High Cascades, such as

Mount Hood, Mount Jefferson, and the Three Sisters. The province began forming in the Eocene epoch (~40 million years ago) due to subduction of the Farallon plate beneath the North American plate, which formed a chain of volcanic vents roughly parallel to the Pacific Ocean.

Thick alternating sequences of ash and lava flows built the foundation of the Western Cascades.

An interval of titling and folding about 5 million years ago caused volcanic activity to temporarily cease, accelerating stream erosion, leading to dissected mountain topography that exists today.

Continued subduction of the Juan De Fuca Plate caused eruptive centers to migrate eastward between late Miocene and Quaternary epochs (~5 million to 10,000 thousand years ago), forming High Cascade peaks. Most recently in late Pleistocene (less than 100,00 years ago), lava flows erupted beneath sheets of ice, which led to development of lahars, high velocity and far reaching mud or debris flows composed of a slurry of pyroclastic material, rocky debris and water. Lahars filled many downstream valleys.

No large-scale, detailed geologic mapping is available for the project area, but small-scale, regional mapping (Wells, et al., 2008) indicates the site is situated along the margin of the Western and High Cascades provinces (ATTACHMENT 2 – GEOLOGIC MAP). These volcanic rocks generally consist of basalt, andesite, and dacite, but locally include volcanic tuff and lahar deposits. The McKenzie River has dissected its valley through these rocks and deposited a series of intra-valley river terraces, upon which the project site is located. River terrace deposits (alluvium) generally consist of well-graded silts, sands, and gravels, with varying percentages of cobbles and boulders up to three feet in diameter, as observed during our geotechnical investigation and field assessment of the site.

SITE CONDITIONS

The project begins at the intersection of HWY 126 with FSR 2600-735 near MP 10 in Linn County, Oregon, and extends generally north along FSR 2600-735 for approximately 2,600 feet.

Heading north on HWY 126, the project is accessed by taking a left hand turn onto FSR 2600-

735. The approach is paved with two inches of asphalt pavement for approximately 70 horizontal feet before the road transitions to a native soil surface for the remainder of its length.

Access to the parking area is located on the right hand side of FSR 2600-735, approximately 1,400 feet north beyond the intersection with HWY 126. At the time of the subsurface investigation, large swathes of timber and topsoil had been cleared from the site of the proposed parking area.

The project site is located within the Western Cascades Lowlands and Valleys ecoregion (Thorson, et al., 2003), which comprises a network of steep ridges and narrow valleys on lower slopes of the Cascade Mountains. Project site elevation is approximately 2,200 feet above mean sea level. The mild, wet climate promotes lush forests dominated by western hemlock and Douglas-fir, with western red cedar, bigleaf maple, red alder, vine maple, salal, rhododendron, Oregon grape, huckleberry, thimbleberry, sword fern, oxalis, hazel, and blackberry.

Project site climate statistics presented below were taken from the Western Regional Climate Center (2022), and were recorded at the Carmen-Smith hydroelectric plant office, near Belknap Springs, Oregon, at an elevation of 2,162 feet for the period 1960 to 2016:

Mean annual precipitation (inches) ........................................................ 37.1 Mean annual snowfall (inches) .............................................................. 74.5 Mean max temperature (degrees Fahrenheit)........................................ 59.3 Mean min temperature (degrees Fahrenheit)......................................... 37.1

SUBSURFACE INVESTIGATION

The subsurface investigation was developed to characterize soil conditions in an effort to validate embankment foundation conditions and to inform design of pavement structural sections for various project elements, including expansion of the highway for a left-hand turn lane, access road, and parking area. The subsurface investigation initially included infiltration testing at two locations within the proposed parking area. However, personal communication dated June 16, 2022 from Matt Helstab, U.S. Forest Service, indicated soils in the project areas are highly permeable, as observed during a high-intensity rainfall event that occurred June 10- 14, 2022, in which 3.15 inches of rain fell in the project area (NOAA, 2022). Additionally, 2.30 inches of rain fell in the 48-hour period from June 11-12, 2022, while heavy equipment was on site in support of tree clearing for the parking lot. No pooling of water or rutting of soils was observed during this time period. After conferring with Jim Neighorn, Western Federal Lands Highway Division (WFLHD) hydraulics engineer, it was determined that infiltration testing was no longer required based on this anecdotal information. The investigation included 10 subgrade borings and was completed on August 16, 2022. Boring locations are summarized in Table 1 and shown in ATTACHMENT 1 – PROJECT AND BORING LOCATIONS MAP. Draft boring logs and laboratory results are shown in ATTACHMENT 3 – BORING LOGS and ATTACHMENT 4 – LABORATORY TEST RESULTS, respectively.

Subgrade borings were drilled with a Central Mine Equipment (CME) 750X rubber tire drill rig, utilizing a 10-inch outside diameter solid stem auger and 14-inch flat profile bit. Borings were advanced to five feet depth below ground surface (BGS) or until advancement of the bit encountered refusal. Borings were backfilled with soil cuttings and resurfaced with cold patch asphalt (where applicable). Borings were logged in the field by an engineering geologist from WFLHD in accordance with FLH Soil and Rock Characterization Guidelines (2017).

Table 1. Subgrade boring locations and depths.

Boring ID Purpose Latitude Longitude Depth (ft) below ground surface Depth to

Groundwater (ft)1

SG22-01 Subgrade Sample 44.28859 122.03139 2.2 NE

SG22-02 Subgrade Sample 44.28869 122.03149 3.0 NE

SG22-03 Subgrade Sample 44.28883 122.03137 1.8 NE

SG22-04 Subgrade Sample 44.29027 122.03244 2.0 NE

SG22-05 Subgrade Sample 44.29131 122.03197 3.5 NE

SG22-06 Subgrade Sample 44.29190 122.03097 5.0 NE

SG22-07 Subgrade Sample 44.29217 122.03006 5.0 NE

SG22-08 Subgrade Sample 44.29219 122.03038 3.5 NE

SG22-09 Subgrade Sample 44.29264 122.02988 5.0 NE

SG22-10 Subgrade Sample 44.29297 122.02931 5.0 NE

1 NE = not encountered during drilling activities

Laboratory Testing

Samples collected during drilling were shipped to WFLHD in Vancouver, Washington. Samples and draft borings logs were reviewed by a WFLHD materials engineer and engineering geologist assigned to the project, and representative samples were selected for laboratory testing.

Results of laboratory testing will be used for analysis and design of pavement structural sections proposed for the project. Selected samples included the following tests:

• Soil Classification (AASHTO M145)

• Sieve Analysis (AASHTO T11/T27)

• Particle Size Analysis-Hydrometer Method (AASHTO T88-4hr.)

• Atterberg Limits (AASHTO T89/T90)

• Specific Gravity (AASHTO T100)

• Resistance R-Value and Expansion Pressure of Compacted Soils (AASHTO T190)

• Moisture Content (AASHTO T265)

Laboratory results are presented in ATTACHMENT 4 – LABORATORY TEST RESULTS.

SUBSURFACE CONDITIONS

Subgrade borings encountered soils that graded from reddish brown silty gravel with sand, to reddish brown gravelly silt, and were generally consistent with what would be expected in river terrace deposits (alluvium). Boring depths ranged from 1.8 to 5.0 feet depth BGS, and the majority encountered cobbles and/or boulders up to 36 inches in diameter. No groundwater was encountered during drilling. Minor amounts of organic material, primarily tree and plant roots, was encountered in approximately one-half of borings. One exception was boring SG22-06, which encountered decaying wood from the surface to one foot depth BGS. Embankment foundation soils adjacent to HWY 126, where the proposed left hand turn lane will be constructed, consist of 1.0 to 1.5 feet of road base fill overlying reddish brown silty sand with gravel. Soil fines contents range from 8.9 to 26.4%, and are non-plastic. Soil moisture contents range from 7.75 to 24.4%, specific gravity ranges from 2.696 to 2.796, and R-values range from 69 to 74.

RECOMMENDATIONS

We do not anticipate slope stability issues with the project as proposed. It is generally recommended that new cut slopes in soil material be constructed at a slope no steeper than 1V:2H. It is generally recommended that new embankment slopes be constructed utilizing unclassified borrow quality materials meeting FP-14 Standard Specification 704.06 and sloped no steeper than 1V:2H. Given the granular nature of embankment foundation soils, it is anticipated that settlement due to increased loading will be instantaneous during construction, and negligible in magnitude. No long-term settlement is anticipated for the proposed project elements.

Based on limited laboratory testing results included here, soils on site may be suitable for reuse.

Testing performed by WFLHD does not relieve contractors of any requirements contained in project plans and specifications, and does not waive any permitting requirements for any possible onsite materials source development. Testing of all materials is required at the time of construction and is the responsibility of the contractor, and onsite materials may not meet project specifications. Surface and subsurface rights of any potential materials site must be verified by the contractor prior to use.

REFERENCES

National Oceanic and Atmospheric Administration, 2022, Record of Climatological Observations for the Belknap Springs 8N Station #350652:

https://www.ncdc.noaa.gov/cdo-web/datasets/GHCND/stations/GHCND:USC00350652/detail, accessed 2022-11-30.

Orr, E.L., and Orr, W.N., 2012, Oregon Geology: Corvallis, Oregon, Oregon State University Press, 304 p.

Thorson, T.D., Bryce, S.A., Lammers, D.A., et al., 2003, Ecoregions of Oregon: Environmental Protection Agency, 1:500,000 scale.

https://www.ncdc.noaa.gov/cdo-web/datasets/GHCND/stations/GHCND:USC00350652/detail https://www.ncdc.noaa.gov/cdo-web/datasets/GHCND/stations/GHCND:USC00350652/detail

Wells, R.E., Niem, A.R., Priest, G.R., Ma, L., Newendorp, C.A., and Madin, I.P., 2008, Preliminary digital geologic compilation map of part of western Oregon [map plate of West portion of OGDC project]: Oregon Department of Geology and Mineral Industries, Open File Report O-08-13, 1:175,000 scale.

Western Regional Climate Center, 2022, Period of Record Monthly Climate Summary for the Belknap Springs 8N Station #350652, Desert Research Institute:

https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?or0652, accessed 2022-11-09.

CLOSING

Please contact engineering geologist Ryan Cole at (360) 619-7571 or Ryan.Cole@dot.gov with any questions regarding this memorandum.

CC: Andrew Roseman-Hanauer, Highway Design Nassim Sabahfar, Materials

Vernon Bevan, Hydraulics Cyrus Bullock, Environment Katherine Carlos, Highway Safety Veredith Anderson, Right of Way and Utilities Doug Anderson, GEO Team Functional Manager

Geotechnical File

Attachments:

ATTACHMENT 1 – PROJECT AND BORING LOCATIONS MAP

ATTACHMENT 2 – GEOLOGIC MAP

ATTACHMENT 3 – BORING LOGS

ATTACHMENT 4 – LABORATORY TEST RESULTS

https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?or0652 mailto:Ryan.Cole@dot.gov

ATTACHMENT 1 – PROJECT AND BORING LOCATIONS MAP

610 East Fifth Street Vancouver, WA 98661

Project No. Blue Pool Safety and Access Enhancements FigureOR DOT 126(1) Scale

Project Location 1-1

NTS

File Name:

Date:

November 01, 2022

Vancouver, WA 98661

Project No. Blue Pool Safety and Access Enhancements FigureOR DOT 126(1) Scale

Boring Locations 1-2 1:2,400 File Name:

Date:

December 29, 2021

ATTACHMENT 2 – GEOLOGIC MAP

Vancouver, WA 98661

Project No. Blue Pool Safety and Access Enhancements FigureOR DOT 126(1) Scale

Geologic Map (modified from Wells, et al., 2008) 2-1 1:175,000 File Name:

Date:

November 09, 2022

Project Location

ATTACHMENT 3 – BORING LOGS

8" S

S A w / 1

4" fl at p ro fil e bi t S01

S02 Fines = 18%

SG = 2.72

Silty GRAVEL with sand, reddish brown, moist, coarse gravel to fine sand, subangular to subrounded, trace roots, with boulders up to 12 inches. FILL.

1 ft Silty SAND with gravel, reddish brown, moist, coarse gravel to fine sand, subangular to rounded, trace roots, river terrace deposit. Refusal at 2.2 feet. A-1-b(0).

2.2 ft Bottom of borehole at 2.2 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-01

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.288587° Longitude: -122.031394° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

G ra ph ic

L og

S A w ith

4" fl at p ro fil e bi t

S03

S04

Fines = 12%

Fines = 18%

SG = 2.75

Silty GRAVEL with sand, reddish brown, moist, coarse gravel to fine sand, subangular to subrounded, FILL.

A-1-b(0).

1.5 ft Sandy SILT with gravel, reddish brown, moist, fine gravel to fine sand, subangular to subrounded, trace roots, with cobble up to 4 inches, river terrace deposit. Refusal on 12-inch boulder at 3.0 feet. R-value 74. A-1-b(0).

3 ft Bottom of borehole at 3 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-02

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: ---

Driller helper: Ryan

Latitude: 44.288694° Longitude: -122.031492° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S05

S06

Fines = 9%

ASPHALT, 2 inches.

0.17 ft

Silty GRAVEL with sand, gray, moist, coarse gravel to fine sand, subangular to subrounded, BASE. A-1-a(0).

1 ft Silty GRAVEL with sand, brown, moist, coarse gravel to fine sand, angular to subrounded, river terrace deposit.

Refusal on 24-inch boulder at 1.8 feet. Moisture content 7.75%.

1.8 ft Bottom of borehole at 1.8 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-03

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.288826° Longitude: -122.031373° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S07 Fines = 17%

SG = 2.80

Silty GRAVEL with sand, reddish brown, moist, coarse gravel to fine sand, subrounded, trace roots, with cobbles and boulders up to 12 inches, river terrace deposit.

16-inch boulder at surface. Refusal on 36-inch boulder at 2 feet. A-1-b(0).

2 ft Bottom of borehole at 2 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-04

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.290274° Longitude: -122.032442° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S08

S09

Silty GRAVEL with sand, brown, moist, coarse gravel to fine sand, subangular to subrounded, with roots, and cobbles up to 4 inches, river terrace deposit. Refusal on boulder at 3.5 feet.

3.5 ft Bottom of borehole at 3.5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-05

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.291314° Longitude: -122.031966° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S10

S11

Fines = 26%

SG = 2.72

DECAYING LOG.

1 ft Gravelly SILT with sand, brown, moist, coarse gravel to fine sand, subangular to subrounded, with charcoal fragments, river terrace deposit. R Value 69. A-2-4(0).

3 ft Silty SAND with gravel, brown, moist, coarse gravel to fine sand, subangular to subrounded, with roots, and minor cobble up to 4 inches, river terrace deposit.

5 ft Bottom of borehole at 5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-06

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:2

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.291897° Longitude: -122.030968° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S14

S15

Fines = 20%

Fines = 10%

SG = 2.79

Silty SAND, brown, moist, coarse gravel to fine sand, subrounded, river terrace deposit. A-1-b(0).

1.6 ft Silty GRAVEL with sand, brown, moist, coarse gravel to fine sand, subrounded, river terrace deposit. R-value 73.

A-1-b(0).

5 ft Bottom of borehole at 5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-07

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:3

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.29217° Longitude: -122.030061° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S12

S13

Fines = 21%

Fines = 13%

Silty SAND with gravel, brown, moist, coarse gravel to fine sand, subangular to subrounded, with cobbles and boulders up to 24 inches, river terrace deposit. A-1-b(0).

2.5 ft COBBLES AND BOULDERS, with a matrix of silty SAND with gravel, brown, moist, coarse gravel to fine sand, subangular to subrounded, with roots, river terrace deposit. Refusal on boulder at 3.5 feet. Moisture content 24.4%. A-1-a(0).

3.5 ft Bottom of borehole at 3.5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-08

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:3

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.292189° Longitude: -122.030381° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

NP

NP

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S16

S17

Sandy SILT with gravel, brown, moist, coarse gravel to fine sand, subrounded, river terrace deposit.

2 ft Silty SAND with gravel, brown, moist, coarse gravel to fine sand, subrounded, river terrace deposit.

5 ft Bottom of borehole at 5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-09

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:3

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.292643° Longitude: -122.029875° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

G ra ph ic

S A w ith

4" fl at p ro fil e bi t

S18

COBBLES AND BOULDERS, with a matrix of well graded GRAVEL with silt, brown, moist, coarse gravel to fine sand, angular to rounded, river terrace deposit.

5 ft Bottom of borehole at 5 ft.

D ril lin g

M et ho d

Field Blow Count (Recovery)No.

T yp e

Test Results

SAMPLE

SG22-10

Sheet: 1 of 1

Project Location: MP 10.0, Highway 126, Linn County, OR

20 40 60 80

PL LLWC

N VALUE

20 40 60 80

Project Name: Blue Pool Safety and Access Enhancements D ep th ft)

MATERIAL DESCRIPTION

BORING LOG

U. S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

FEDERAL LANDS HIGHWAY DIVISION

F H

W A

L O

G

F H

W A

_D A

T A

T E

M P

LA

T

E .G

D T

2/ 1/

:3

D :\B

LU

E

P O

O L\

\O

R D

O T

(1

B

LU

E P

O O

L.

G

P J

Groundwater Depth:

Notes:

After Drilling: ---

While Drilling: --- At Completion: No Groundwater Encountered

Driller helper: Ryan

Latitude: 44.292966° Longitude: -122.029311° Datum: WGS84

Weather: Hot and sunny

Date Started: 8/16/22 Date Completed: 8/16/22 Driller/Company: Aaron Delvalle/Haztech

Logger/Company: Ryan Cole/WFLHD

Drill CME 750X Hammer Type: 140 lbs Automatic

G ra ph ic

ATTACHMENT 4 – LABORATORY TEST RESULTS

Station:

Western Federal Lands

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0985-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-COM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S02

Lot No.:

Date Sampled: 8/16/2022

Depth: 1.0-2.2' Hole No.: SG22-01

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Specific Gravity @ 20°C 2.722

Methods: T 100 - AASHTO Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/12/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/12/2022

Version 1

Unit of MeasureResult

See Attached Report Document

Methods: AASHTO T 88 - Interim Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0985-GS

Con tro lle d C op y

Unit of MeasureResult

Classification A-1-b (0)

Gravel (2.00-mm and larger) 44.7 %

Coarse sand (2.0 to 0.42-mm) 17.0 %

Fine Sand (0.42 to 0.074-mm) 20.3 %

Silt-clay (0.075mm and smaller) 18.0 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0985-GS

Con tro lle d C

AASHTO T 88

Particle Size Analysis of Soils Laboratory ID #

➖➖➖ Results ➖➖➖

6" sieve ( 152.4 mm) % Passing - %

5" sieve ( 127 mm) % Passing - %

4" sieve ( 101.6 mm) % Passing - %

3.5" sieve ( 88.9 mm) % Passing - %

3" sieve sieve ( 76 mm) % Passing 100.0 %

2.5" sieve ( 63.5 mm) % Passing 100.0 %

2" sieve (50.0 mm) % Passing 95.6 %

1.5" sieve (37.5 mm) % Passing 92.1 %

1" sieve (25.0 mm) % Passing 87.4 %

3/4" sieve (19.0 mm) % Passing 84.4 %

1/2" sieve (12.5 mm) % Passing 80.1 %

3/8" sieve (9.5 mm) % Passing 76.7 %

No. 4 sieve (4.75 mm) % Passing 67.5 %

No. 10 sieve (2.0mm) % Passing 55.3 %

No. 40 Sieve (0.425mm) % Passing 38.3 %

No. 200 Sieve (0.075mm) % Passing 18.0 % interpolated .020 mm % Passing 5.4 % interpolated .010 mm % Passing 1.7 % interpolated .005 mm % Passing 0.0 % interpolated .002 mm % Passing - % interpolated .001 mm % Passing - %

W-22-0985-GS

Attachment - Page 1 of 1

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0986-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-SIM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S03

Lot No.:

Date Sampled: 8/16/2022

Depth: 0.0-1.5' Hole No.: SG22-02

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/12/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/12/2022

Version 1

Unit of MeasureResult

6"sieve (152.4 mm) % Passing - %

5" sieve (127.0 mm) % Passing - %

4" sieve (101.6 mm) % Passing - %

3.5" sieve (88.9 mm) % Passing - %

3" sieve(76.2 mm) % Passing - %

2.5" sieve (63.5 mm) % Passing - %

2" sieve (50.0 mm) % Passing - %

1.5" sieve (37.5 mm) % Passing 100 %

1" sieve (25.0 mm) % Passing 100 %

3/4" sieve (19.0 mm) % Passing 99 %

1/2" sieve (12.5 mm) % Passing 95 %

3/8" sieve (9.5 mm) % Passing 91 %

No. 4 sieve (4.75 mm) % Passing 77 %

No. 8 sieve (2.36 mm) % Passing - %

No. 10 sieve (2.0mm) % Passing 61 %

Methods: T 11/T 27 - AASHTO Test Date: 10/12/2022 Tested By: Jerrad IschVersion 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0986-GS

Con tro lle d C

No. 16 sieve (1.18 mm) % Passing - %

No. 20 sieve (0.841 mm) % Passing - %

No. 30 sieve (0.600 mm) % Passing - %

No. 40 sieve (0.425 mm) % Passing 39 %

No. 50 sieve (0.300 mm) % Passing - %

No. 60 sieve (0.250 mm) % Passing - %

No. 80 sieve (0.177 mm) % Passing - %

No. 100 sieve (0.150 mm) % Passing 21 %

No. 200 sieve (0.075 mm) % Passing 11.9 %

AASHTO T11 (% finer than No. 200 sieve) N/A

Comments:

Test Validated By: Jerrad Isch Validated Date: 10/12/2022

Unit of MeasureResult

Classification A-1-b (0)

Gravel (2.00-mm and larger) 39.0 %

Coarse sand (2.0 to 0.42-mm) 22.0 %

Fine Sand (0.42 to 0.074-mm) 27.1 %

Silt-clay (0.075 and smaller) 11.9 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 10/12/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/12/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0986-GS

Con tro lle d C

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0987-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-PS

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S04

Lot No.:

Date Sampled: 8/16/2022

Depth: 1.5-3'' Hole No.: SG22-02

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Specific Gravity @ 20°C 2.751

Methods: T 100 - AASHTO Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/20/2022 Tested By: Rob Lange

Comments:

Test Validated By: Eric Wilson Validated Date: 10/24/2022

Version 2

Unit of MeasureResult

R value by Exudation @ 300 psi 74

Density @ R Value 84.7 pcf

Moisture @ R Value 24.9 %

Methods: T 190 AASHTO Test Date: 10/28/2022 Tested By: Don Rowe

Comments:

Version 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0987-GS

Con tro lle d C

Test Validated By: Don Rowe Validated Date: 10/29/2022

See Attached Report Document

Methods: AASHTO T 88 - Interim Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Classification A-1-b (0)

Gravel (2.00-mm and larger) 32.3 %

Coarse sand (2.0 to 0.42-mm) 20.9 %

Fine Sand (0.42 to 0.074-mm) 28.8 %

Silt-clay (0.075mm and smaller) 18.0 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0987-GS

Con tro lle d C

Laboratory ID #

➖➖➖ Results ➖➖➖

6" sieve ( 152.4 mm) % Passing - %

5" sieve ( 127 mm) % Passing - %

4" sieve ( 101.6 mm) % Passing - %

3.5" sieve ( 88.9 mm) % Passing - %

3" sieve sieve ( 76 mm) % Passing - %

2.5" sieve ( 63.5 mm) % Passing 100.0 %

2" sieve (50.0 mm) % Passing 98.7 %

1.5" sieve (37.5 mm) % Passing 97.7 %

1" sieve (25.0 mm) % Passing 95.0 %

3/4" sieve (19.0 mm) % Passing 93.0 %

1/2" sieve (12.5 mm) % Passing 89.2 %

3/8" sieve (9.5 mm) % Passing 86.6 %

No. 4 sieve (4.75 mm) % Passing 78.8 %

No. 10 sieve (2.0mm) % Passing 67.7 %

No. 40 Sieve (0.425mm) % Passing 46.8 %

No. 200 Sieve (0.075mm) % Passing 18.0 % interpolated .020 mm % Passing 4.2 % interpolated .010 mm % Passing 0.8 % interpolated .005 mm % Passing 0.0 % interpolated .002 mm % Passing - % interpolated .001 mm % Passing - %

W-22-0987-GS

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0988-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-SIM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S05

Lot No.:

Date Sampled: 8/16/2022

Depth: 0.17-1.0' Hole No.: SG22-03

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/12/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/12/2022

Version 1

Unit of MeasureResult

6"sieve (152.4 mm) % Passing - %

5" sieve (127.0 mm) % Passing - %

4" sieve (101.6 mm) % Passing - %

3.5" sieve (88.9 mm) % Passing - %

3" sieve(76.2 mm) % Passing - %

2.5" sieve (63.5 mm) % Passing - %

2" sieve (50.0 mm) % Passing - %

1.5" sieve (37.5 mm) % Passing 100 %

1" sieve (25.0 mm) % Passing 98 %

3/4" sieve (19.0 mm) % Passing 95 %

1/2" sieve (12.5 mm) % Passing 85 %

3/8" sieve (9.5 mm) % Passing 76 %

No. 4 sieve (4.75 mm) % Passing 58 %

No. 8 sieve (2.36 mm) % Passing - %

No. 10 sieve (2.0mm) % Passing 40 %

Methods: T 11/T 27 - AASHTO Test Date: 10/13/2022 Tested By: Jerrad IschVersion 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0988-GS

Con tro lle d C

No. 20 sieve (0.841 mm) % Passing - %

No. 30 sieve (0.600 mm) % Passing - %

No. 40 sieve (0.425 mm) % Passing 21 %

No. 50 sieve (0.300 mm) % Passing - %

No. 60 sieve (0.250 mm) % Passing - %

No. 80 sieve (0.177 mm) % Passing - %

No. 100 sieve (0.150 mm) % Passing 13 %

No. 200 sieve (0.075 mm) % Passing 8.9 %

AASHTO T11 (% finer than No. 200 sieve) N/A

Comments:

Test Validated By: Jerrad Isch Validated Date: 10/13/2022

Unit of MeasureResult

Classification A-1-a (0)

Gravel (2.00-mm and larger) 60.0 %

Coarse sand (2.0 to 0.42-mm) 19.0 %

Fine Sand (0.42 to 0.074-mm) 12.1 %

Silt-clay (0.075 and smaller) 8.9 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 10/13/2022 Tested By: Jerrad Isch

Comments:

Test Validated By: Jerrad Isch Validated Date: 10/13/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0988-GS

Con tro lle d C

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0989-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: T 265 - Moisture Content of Soils

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: MC06

Lot No.:

Date Sampled: 8/16/2022

Depth: 1.0'-1.8' Hole No.: SG22-03

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Drying Temperature 230 ° F

% Moisture 7.75 %

Methods: T 265 - AASHTO Test Date: 10/5/2022 Tested By: Chuck Miller

Comments:

Test Validated By: Jerrad Isch Validated Date: 10/6/2022

Version 1

All reported results apply to the sample as received.

Page 1 of 1Sample ID: W-22-0989-GS

Con tro lle d C

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0990-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-COM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S07

Lot No.:

Date Sampled: 8/16/2022

Depth: 0.0-2.0' Hole No.: SG22-04

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Specific Gravity @ 20°C 2.796

Methods: T 100 - AASHTO Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/26/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/26/2022

Version 1

Unit of MeasureResult

See Attached Report Document

Methods: AASHTO T 88 - Interim Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0990-GS

Con tro lle d C

Gravel (2.00-mm and larger) 42.8 %

Coarse sand (2.0 to 0.42-mm) 21.9 %

Fine Sand (0.42 to 0.074-mm) 18.8 %

Silt-clay (0.075mm and smaller) 16.5 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0990-GS

Con tro lle d C

Laboratory ID #

➖➖➖ Results ➖➖➖

6" sieve ( 152.4 mm) % Passing - %

5" sieve ( 127 mm) % Passing - %

4" sieve ( 101.6 mm) % Passing - %

3.5" sieve ( 88.9 mm) % Passing - %

3" sieve sieve ( 76 mm) % Passing - %

2.5" sieve ( 63.5 mm) % Passing 100.0 %

2" sieve (50.0 mm) % Passing 98.7 %

1.5" sieve (37.5 mm) % Passing 94.7 %

1" sieve (25.0 mm) % Passing 89.4 %

3/4" sieve (19.0 mm) % Passing 85.5 %

1/2" sieve (12.5 mm) % Passing 80.0 %

3/8" sieve (9.5 mm) % Passing 77.1 %

No. 4 sieve (4.75 mm) % Passing 70.1 %

No. 10 sieve (2.0mm) % Passing 57.2 %

No. 40 Sieve (0.425mm) % Passing 35.3 %

No. 200 Sieve (0.075mm) % Passing 16.5 % interpolated .020 mm % Passing 4.0 % interpolated .010 mm % Passing 1.7 % interpolated .005 mm % Passing 0.0 % interpolated .002 mm % Passing - % interpolated .001 mm % Passing - %

W-0990-GS

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0991-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-COM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S10

Lot No.:

Date Sampled: 8/16/2022

Depth: 1.0-3.0' Hole No.: SG22-06

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Specific Gravity @ 20°C 2.772

Methods: T 100 - AASHTO Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/26/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/26/2022

Version 1

Unit of MeasureResult

See Attached Report Document

Methods: AASHTO T 88 - Interim Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0991-GS

Con tro lle d C

Classification A-2-4 (0)

Gravel (2.00-mm and larger) 22.9 %

Coarse sand (2.0 to 0.42-mm) 17.8 %

Fine Sand (0.42 to 0.074-mm) 32.9 %

Silt-clay (0.075mm and smaller) 26.4 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

R value by Exudation @ 300 psi 69

Density @ R Value 83.2 pcf

Moisture @ R Value 29.0 %

Methods: T 190 AASHTO Test Date: 10/28/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/29/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0991-GS

Con tro lle d C

Laboratory ID #

➖➖➖ Results ➖➖➖

6" sieve ( 152.4 mm) % Passing - %

5" sieve ( 127 mm) % Passing - %

4" sieve ( 101.6 mm) % Passing - %

3.5" sieve ( 88.9 mm) % Passing - %

3" sieve sieve ( 76 mm) % Passing - %

2.5" sieve ( 63.5 mm) % Passing - %

2" sieve (50.0 mm) % Passing 100.0 %

1.5" sieve (37.5 mm) % Passing 99.8 %

1" sieve (25.0 mm) % Passing 96.8 %

3/4" sieve (19.0 mm) % Passing 95.0 %

1/2" sieve (12.5 mm) % Passing 91.6 %

3/8" sieve (9.5 mm) % Passing 89.3 %

No. 4 sieve (4.75 mm) % Passing 84.3 %

No. 10 sieve (2.0mm) % Passing 77.1 %

No. 40 Sieve (0.425mm) % Passing 59.3 %

No. 200 Sieve (0.075mm) % Passing 26.4 % interpolated .020 mm % Passing 9.8 % interpolated .010 mm % Passing 5.3 % interpolated .005 mm % Passing 1.3 % interpolated .002 mm % Passing - % interpolated .001 mm % Passing - %

W-22-0991-GS

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0992-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-COM

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S14

Lot No.:

Date Sampled: 8/16/2022

Depth: 0.0-1.6' Hole No.: SG22-07

Project Name: BLUE POOL SAFETY AND ACCESS

ENHANCEMENT PROJECT

Unit of MeasureResult

Specific Gravity @ 20°C 2.696

Methods: T 100 - AASHTO Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

Unit of MeasureResult

Liquid Limit From T 89 Not Run

Plastic Limit from T 90 Non-Plastic

Plasticity Index Not Applicable

Methods: T 89 & T 90 - AASHTO Atterberg Limit Test Date: 10/26/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 10/26/2022

Version 1

Unit of MeasureResult

See Attached Report Document

Methods: AASHTO T 88 - Interim Test Date: 11/8/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 1 of 2Sample ID: W-22-0992-GS

Con tro lle d C

Gravel (2.00-mm and larger) 30.5 %

Coarse sand (2.0 to 0.42-mm) 29.0 %

Fine Sand (0.42 to 0.074-mm) 20.6 %

Silt-clay (0.075mm and smaller) 19.9 %

Methods: M 145 - AASHTO (AASHTO M 145 is not an AAP accredited test) Test Date: 11/9/2022 Tested By: Don Rowe

Comments:

Test Validated By: Don Rowe Validated Date: 11/9/2022

Version 1

All reported results apply to the sample as received.

Page 2 of 2Sample ID: W-22-0992-GS

Con tro lle d C

Laboratory ID #

➖➖➖ Results ➖➖➖

6" sieve ( 152.4 mm) % Passing - %

5" sieve ( 127 mm) % Passing - %

4" sieve ( 101.6 mm) % Passing - %

3.5" sieve ( 88.9 mm) % Passing - %

3" sieve sieve ( 76 mm) % Passing - %

2.5" sieve ( 63.5 mm) % Passing 100.0 %

2" sieve (50.0 mm) % Passing 95.7 %

1.5" sieve (37.5 mm) % Passing 93.1 %

1" sieve (25.0 mm) % Passing 91.2 %

3/4" sieve (19.0 mm) % Passing 89.3 %

1/2" sieve (12.5 mm) % Passing 86.4 %

3/8" sieve (9.5 mm) % Passing 84.7 %

No. 4 sieve (4.75 mm) % Passing 79.7 %

No. 10 sieve (2.0mm) % Passing 69.5 %

No. 40 Sieve (0.425mm) % Passing 40.5 %

No. 200 Sieve (0.075mm) % Passing 19.9 % interpolated .020 mm % Passing 7.3 % interpolated .010 mm % Passing 4.0 % interpolated .005 mm % Passing 0.9 % interpolated .002 mm % Passing - % interpolated .001 mm % Passing - %

W-22-0992-GS

Project No.: OR FLAP DOT 126(1) Sample ID: W-22-0993-GS

Materials Laboratory

ISO/IEC 17025:2017 Accredited

Material Description: SO-PS

MilePost:

Offset:

Intended Use:

Remarks:

Source Name:

Source Location:

Sample Location: Other

Submitted By: Ryan A. Cole

Quantity Represented:

Item No.:

Field Sample No.: S15

Lot No.:

Date…