Revised_GM13-15_South_of_Big_Sandy_Preliminary_Geotechnical_Memorandum.pdf

Memorandum

Western Federal Lands Highway Division 610 E. Fifth Street

Vancouver, WA 98661-3801

Date: March 17, 2015

In Reply Refer To: HFL-17 GM 13-15

From: Dustin Woods Geotechnical Engineer, WFLHD

To: Keith Wong Project Manager, WFLHD

Subject: MDOT 236(1) South of Big Sandy Preliminary Geotechnical Recommendations

Geotechnical Memorandum GM 13-15

This memorandum was revised on June 1, 2016 to include the Western Federal Lands boring logs and the materials testing information from both Western Federal Lands and Montana Department of Transportation. All recommendations contained in this memorandum are still valid.

INTRODUCTION

This memorandum provides preliminary geotechnical recommendations for the MDOT 236(1) South of Big Sandy reconstruction project. The reconstruction efforts will be on the unpaved highway between mileposts 60.0 and 74.0, tying in to the existing paved highway at milepost

74.0. This section of highway was constructed in 1945 as a gravel surface highway and reconstructed in approximately 1982 with a future plan to pave the highway. The highway was never paved with asphalt and in 2010 Montana Department of Transportation (MDT) completed a subsurface investigation of this portion of the road to develop a project. The project was never developed and Chouteau County Montana was successful in obtaining a Federal Lands Access Program grant to finish the project.

GEOLOGY

This area of Montana is generally underlain with Claggett and Judith River formation consisting of shale and sandstone. Unconsolidated surficial deposits overlie the formations;

the most abundant is ground moraine. Ground moraine is made up of till, clay, silt, sand, and has some cobbles and boulders. Only fine-grain soils are present at the surface and for the top 5 feet of soil along this project.

SITE INVESTIGATION

The project team was unaware of the previous subsurface investigation in 2010, so an investigation plan was put together by Western Federal Lands (WFL) Engineering Geologist Malcolm Ulrich. Western Federal Lands (WFL) was successful in obtaining MDT’s drilling services and was able to complete the drilling for the project in November 2014. Samples were taken and holes were logged by WFL Geotechnical Engineer Dustin Woods. The samples were brought back to WFL in Vancouver, Washington and submitted to the materials section for index and R-value testing.

Shortly after submitting test requests to the WFL Materials lab it was realized that the same project limits were investigated by MDT in 2010. Upon receiving this information, all testing that had not begun was put on hold.

The subgrade borings completed during both MDT’s 2010 and WFL’s 2014 investigation along the 14 mile stretch of unimproved road ranged from 3 feet (MDT) to 5 feet (WFL) deep.

The boring logs from the 2014 site investigation agreed with the test results from the 2010 investigation and the site specific geology. The roadway is generally made up of low plasticity clays and silts with some course grained material interspersed. Generally there is a surface layer or “pavement” layer that is made up of sands with some gravels in the top 2 to 3 inches of the road surface.

SITE CONDITIONS

During the drilling in 2014 there was an opportunity to see the highway in both dry and wet conditions. When the highway was dry, it was in very good shape with very little surface deformations. After a rain event the highway became saturated and immediately lost its hard smooth surface. The surface material became very loose and easily deformed. After some time of drying it was difficult to distinguish if any areas of the project would benefit more than others with sub-excavations.

A row of surface material was noted on the eastern edge of the road most likely from a grader parked near the middle of the project limits. It is assumed that either a landowner or Choteau County maintenance grades the surface of the highway after it becomes rough. There was a distinct difference in the amount of aggregate in this row of material.

From approximate mileposts 60.0 to 68.4, the material contained much more aggregate as did the road surface itself. Approximate mileposts 68.4 to 74.0 contained very little aggregate, also similar to the driving surface. Materials from the borings showed the same difference in aggregate content. Crushed aggregate surfacing has been placed the length of the project twice and additional maintenance rock has been added intermittently. However the aggregate surfacing has been extensively mixed with the silt and clay subgrade soil, primarily b vehicle travel when the soils are wet and weak. Consequently, the aggregate content has become mostly ineffective in providing structural strength to the road surface. See Table 1 for soil identifications and test data based on MDT’s 2010 and WFL 2014 drilling programs.

Table 1. Soil Identification and Test Data (MDT, 2010)

Milepost

Estimated Distance to Centerline

Depth Soil Class

(AASHTO)

Soil Class

(USCS)

M ax im um

D ry

D en si ty

M oi st ur e P er ce nt N at ur al

AA

SH

T0

T

0)

R"

V al ue

*MP 61.50 10.0' LT 0.0' - 4.0' A-4(1) SC 166.1 - 44

*MP 61.50 10.0' LT 4.0' - 5.0' A-6(13) CL 167.0 14.4 -

MP 61.92 10.0' LT 0.10' - 3.0' A-6(5) CL 117.9 12.6 -

MP 62.18 22.0' RT 0.0' - 0.35' A-1-b(0) SM - - 67

MP 62.18 22.0' RT 0.35' - 3.4' A-4(1) CL-ML 120.5 15.3 14

*MP 62.50 10.0' RT 3.0' - 5.0' - - - 14.7 -

MP 63.00 21.0' RT 0.32' - 3.3' A-6(5) CL 121.1 10.7 -

MP 63.72 12.0' RT 0.30' - 3.5' A-4(0) CL-ML 122.5 10.6 14

MP 64.00 4.0' LT 0.35' - 1.5' A-2-4(0) CL 121.9 14.4 58

MP 64.00 4.0' LT 1.5' - 3.9' A-4(0) CL-ML 120.8 14.3 18

MP 65.00 19.0' RT 0.0' - 0.25' A-1-a(0) SM - - 68

MP 65.00 19.0' RT 0.25' - 3.3' A-2-4(0) SM 111.7 4.8 60

MP 66.00 4.0' RT 0.34' - 3.1' A-6(6) CL 120.3 9.9 -

*MP 66.60 10.0' RT 3.0' - 5.0' - - - 13.8 -

MP 67.00 3.0' LT 0.15' - 3.2' A-4(1) CL-ML 118.7 9.2 18

MP 68.04 16.0' RT 0.22' - 3.1' A-6(9) CL 116.0 9.9 -

MP 69.00 8.0' LT 0.10' - 3.1' A-4(3) CL 119.3 13.1 15

MP 70.00 15.0' RT 0.20' - 3.2' A-6(8) CL 117.0 11.8 -

MP 71.00 6.0' RT 0.20' - 3.3' A-6(4) CL 112.6 9.8 -

MP 72.00 4.0' LT 0.22' - 3.0' A-6(12) CL 115.1 11.7 -

MP 72.96 25.0' RT 0.0' - 0.51' A-1-b(0) SM - - 68

MP 72.96 25.0' RT 0.51' - 3.1' A-6(5) CL 120.0 16.1 -

MP 73.94 12.0' LT 0.0' - 1.5' A-1-a(0) SP-ML - - 71

MP 73.94 12.0' LT 1.5' - 3.2' A-6-(8) CL 118.9 12.4 -

*WFL borings/data.

During the 2014 WFL drilling program, vane shear tests were completed on 11 of the 14 holes drilled. The results of those tests can be seen in Table 2.

Table 2. Vane Shear Test Data

Milepost Boring Number

Depth of Test (ft)

Undrained Shear

Strength (tsf)

60.0 SBS 14-01 LT 2.0 8.5

60.5 SBS 14-02 RT 2.0 4.0

61.5 SBS 14-03 LT 2.0 8.0

62.5 SBS 14-04 RT 2.0 9.0

63.5 SBS 14-05 LT 2.0 11.0

64.5 SBS 14-06 RT 2.0 5.0

65.5 SBS 14-07 LT 2.0 3.5

66.6 SBS 14-08 RT 2.0 7.0

67.5 SBS 14-09 LT 2.0 6.5

70.5 SBS 14-12 RT 2.0 7.5

74.4 SBS 14-16 RT 2.0 8.5

RECOMMENDATIONS

Geotechnical recommendations for this project are minimal due to the project scope. Because this section of highway was constructed with a gravel surface in 1945, and then reconstructed with a gravel surface in 1982, yet little to no gravel structure remained in the 2010 and 2014 drilling operations, it is recommended that the entire pavement structure be underlain with a Class 2, Type C separation geotextile (FP-14 Table 714-1). This separation fabric will offer some structural support to the pavement section, but will mostly be keeping the fine grained subgrade material from mixing with the base aggregate.

No areas for potential sub-excavations were identified in the field and are therefore not being recommended at this time. Sub-excavations will be looked at again before the final recommendation memo is sent out.

CLOSING

Please contact Dustin Woods at (360) 619-7541 or Dustin.Woods@dot.gov with any questions regarding this memorandum.

cc: William Witucki, WFLHD Highway Engineer Nathan Jenks, WFLHD Geotechnical Team Lead Geotechnical File

Attachments: WFL Boring Logs WFL Materials Test Reports MDT Materials Test Reports mailto:Dustin.Woods@dot.gov

VST-01

B-1

MC-1

Gravelly SAND, moist, brown.

CLAY trace silt, moist, brown. Sticky

Vane Shear Test at 2.0 feet = 8.5tsf.

Increased moisture from 4.0 to 5.0 feet.

End of boring at 5.0 feet.

0.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 49' 48.50" (47.83014°)

LONGITUDE (DEGREES): W -109° 49' 4.12" (-109.81781°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

11/4/2014

STATION, OFFSET:

VST-02

MC-1

MC-2

Gravelly SAND, moist, brown.

Silty CLAY with sand trave gravel, moist, brown.

Vane Shear Test at 2.0 feet =4.0 tsf.

Silty SAND, moist, light brown.

End of boring at 5.0 feet.

0.3

4.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 50' 10.39" (47.83622°)

LONGITUDE (DEGREES): W -109° 49' 21.61" (-109.82267°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-02 RT

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-03

MC-1

Gravelly SAND, moist, brown.

Silty sandy CLAY trace gravel, moist, brown, fine to medium grained sand, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet = 8.0 tsf.

CLAY, moist, brown, medium stiff to stiff.

End of boring at 5.0 feet.

0.3

4.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 50' 54.38" (47.84844°)

LONGITUDE (DEGREES): W -109° 49' 57.11" (-109.83253°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-03 LT

COMPANY:

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-04

MC-1

Gravelly SAND, moist, brown.

Silty sandy CLAY trace gravel, moist, brown, fine to medium graned sand, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet = 9.0 tsf.

CLAY trace sand, moist, brown fine grained.

End of boring at 5.0 feet.

1 CANVAS BAG OF GRADED ROAD SURFACE

MATERIAL WAS TAKEN AT THIS LOCATION. THIS

MATERIAL IS REPRESENTATIVE OF THE ROAD

SURFACE FROM MP 60 TO MP 68.4.

0.3

3.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 51' 41.11" (47.86142°)

LONGITUDE (DEGREES): W -109° 50' 30.70" (-109.84186°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-04 RT

COMPANY:

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-05

B-2

MC-1

Gravelly SAND, moist, brown.

Silty sandy CLAY trace gravel, moist, brown, fine to coarse sand, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet = 11.0 tsf.

Silty CLAY, moist, brown, stiff.

End of boring at 5.0 feet.

0.3

2.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 52' 28.31" (47.87453°)

LONGITUDE (DEGREES): W -109° 51' 3.38" (-109.85094°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-05 LT

COMPANY:

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-06

MC-1

B-2

MC-2

Gravelly SAND, moist, brown.

Clayey SILT trace gravel, moist, brown, sub-rounded to sub-angular.

Vane Shear Test at 2.0 feet 5.0 tsf.

CLAY trace silt, moist, black, trace organics.

End of boring at 5.0 feet.

0.3

3.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 53' 16.69" (47.88797°)

LONGITUDE (DEGREES): W -109° 51' 29.59" (-109.85822°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-06 RT

COMPANY:

F ile

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2/

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MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-07

MC-1

Gravelly SAND, moist, brown.

Silty CLAY trace gravel, moist ,brown, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet 3.5 tsf.

Clayey SILT, moist, light brown.

Silty CLAY, moist, brown.

End of boring at 5.0 feet.

0.3

2.0

3.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 54' 4.90" (47.90136°)

LONGITUDE (DEGREES): W -109° 51' 47.20" (-109.86311°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-07 LT

COMPANY:

F ile

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C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-08

B-2

MC-1

Gravelly SAND, moist, brown.

Silty CLAY trace gravel, moist, brown, sub-rounded to sub-angular.

Vane Shear Test at 2.0 feet 7.0 tsf.

CLAY, moist, darker brown.

End of boring at 5.0 feet.

0.3

2.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 54' 58.50" (47.91625°)

LONGITUDE (DEGREES): W -109° 52' 1.81" (-109.86717°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-08 RT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-09

B-2

MC-1

Gravelly SAND, moist, brown.

Silty CLAY trace gravel, moist, brown, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet 6.5 tsf.

CLAY, moist, light brown.

CLAY, moist, black.

End of boring at 5.0 feet.

0.3

2.0

4.0

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 55' 43.28" (47.92869°)

LONGITUDE (DEGREES): W -109° 52' 16.61" (-109.87128°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-09 LT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Cloudy, ~40'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

MC-1

Silty SAND, moist, brown.

CLAY trace gravel, moist, brown, rounded to sub-rounded gravel.

Silty CLAY, moist, brown.

End of boring at 5.0 feet.

0.3

2.5

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 56' 33.11" (47.94253°)

LONGITUDE (DEGREES): W -109° 52' 34.39" (-109.87622°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

Large fill (~20 feet) above creek.NOTES:

BORING SBS 14-10 RT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Light rain, windy, ~45'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

B-2

MC-1

Silty SAND, moist, brown.

CLAY trace gravel, moist, brown, rounded to sub-rounded gravel.

CLAY some gravel, moist, brown, stiff, rounded to sub-rounded gravel.

End of boring at 5.0 feet.

0.3

2.5

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 57' 19.91" (47.95553°)

LONGITUDE (DEGREES): W -109° 53' 3.91" (-109.88442°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-11 LT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Light rain, windy, ~45'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-12

MC-1

Silty SAND, moist, brown.

Silty CLAY trace gravel, moist, brown, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet 7.5 tsf.

End of boring at 5.0 feet.

1 CANVAS BAG OF GRADED ROAD SURFACE

MATERIAL WAS TAKEN AT THIS LOCATION. THIS

MATERIAL IS REPRESENTATIVE OF THE ROAD

SURFACE FROM MP 68.4 TO MP 74

0.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 58' 9.19" (47.96922°)

LONGITUDE (DEGREES): W -109° 53' 26.41" (-109.89067°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-12 RT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Light rain, windy, ~45'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

MC-1

Silty SAND, moist, brown.

Silty CLAY trace gravel, moist, brown, sub-rounded to sub-angular gravel.

End of boring at 5.0 feet.

0.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 58' 48.11" (47.98003°)

LONGITUDE (DEGREES): W -109° 54' 9.90" (-109.90275°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-13 LT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Sunny, windy ~47'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

MC-1

Silty SAND, moist, brown.

Gravelly CLAY, moist, brown, sub-angular to angular gravel.

CLAY trace sand trace gravel, moist, brown, fine to medium grained sand, sub-angular to angular gravel.

End of boring at 5.0 feet.

0.3

1.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 59' 27.49" (47.99097°)

LONGITUDE (DEGREES): W -109° 54' 57.38" (-109.91594°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-14 RT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Sunny, windy ~47'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

B-2

MC-1

Silty SAND, moist, brown.

Gravelly CLAY, moist, brown, rounded to sub-rounded gravel.

End of boring at 5.0 feet.

0.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 47° 59' 53.02" (47.99806°)

LONGITUDE (DEGREES): W -109° 56' 4.81" (-109.93467°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-15 LT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Sunny, windy ~47'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R

VST-16

B-2

MC-1

Silty SAND, moist, brown.

Gravelly CLAY, moist, brown, sub-rounded to sub-angular gravel.

Vane Shear Test at 2.0 feet = 8.5 tsf.

End of boring at 5.0 feet.

0.3

5.0

FIELD

BLOW

COUNT

(Recovery)

LATITUDE (DEGREES): N 48° 0' 23.90" (48.00664°)

LONGITUDE (DEGREES): W -109° 56' 38.29" (-109.94397°)

D E

P T

H ft

Sheet 1 of 1

BORING LOG (US Customary Units)

S A

M P

LE

DRILLING METHODS:

DATE FINISHED:

TOTAL DEPTH: 5'

AFTER DRILLING

Solid Stem Auger

Grab Sample

Vane Shear

AT COMPLETION

G R

A P

H

IC

L O

G

DESCRIPTION

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

NOTES:

BORING SBS 14-16 RT

COMPANY:

F ile

: I :\T

E C

H

S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\P R

O

JE

C T

S \M

D O

T

(1

S

O U

T H

O F

B

IG

S A

N D

Y .G

I:

\T E

C H

_S E

R V

IC

E

S \G

E O

T E

C H

N

IC

A L

S E

R V

IC

E

S \G

IN

T

\L

IB

R A

R Y

\F H

W A

LI

B

R A

R Y nt ed : 1

2/

/2

MDT

LOGGER: Dustin Woods

Sunny, windy ~47'

DATE STARTED:

0.0

FEDERAL HIGHWAY ADMINISTRATION

VANCOUVER, WASHINGTON

GEOTECHNICAL SECTION

Ivyl Boyd and Kurt Torman

WEATHER:

PROJECT: MDOT 236(1) South of Big Sandy

WATER LEVELS

HAMMER:

WHILE DRILLING

DRILLER:

DRILL: 10" Auger

D E

P T

H ft

11/4/2014

S A

M P

LE

R