Gallatin Truck Wash Boring Report.pdf

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MEMORANDUM

Missouri Department of Transportation

Construction & Materials Geotechnical Section

TO: Matthew Moppin

CC: Kevin Griep Scott Emmerich

FROM: Noah Calton Geotechnical Specialist

Zachary Troesser, P.E.

Geotechnical Engineer

DATE: February 6, 2026

SUBJECT: Foundation Investigation for Gallatin Wash Bay Job No. Fi3125 Gallatin Maintenance Facility, Daviess County

A foundation investigation has been conducted for a new wash bay building in Daviess County for the Gallatin Maintenance Facility. It is our understanding the proposed structure will have CMU block walls. Attached are logs of borings for the subject project, an aerial photo showing boring locations, and a subsurface diagram. Coordinate and elevation data were provided by Northwest District Survey.

Existing Conditions

The topography in the immediate area of the planned structure is relatively flat and gently drains to the North. The area of the planned building footprint is currently covered in gravel, save for the northwest corner which is vegetated landscape. There are electrical and gas utility lines within the building footprint, and these are expected to be relocated prior to construction of the planned structure.

The borings for the wash bay building encountered layers of gravel 0.6 to 1 feet thick. This layer was underlain by very stiff to hard lean clay to the depth of termination at 16.5 feet in each boring. Fill composed of native soils were encountered to a depth of just over 5 feet in the NW and SW borings. The fill is expected to be related to the construction of the adjacent structure to the west and was noted to be free of deleterious material and very stiff to hard in our borings.

Groundwater was not encountered during this investigation but may vary with seasonal precipitation.

Recommendations

The following recommendations are based upon information provided regarding the proposed building and conditions observed during the foundation investigation. We understand the proposed facility has a standardized foundation system designed based on a maximum bearing pressure of 2,000 pounds per square foot (psf). A net allowable maximum bearing capacity of 2,000 psf may be

Fi3125 – Gallatin Wash Bay February 6, 2026 used for the proposed structure bearing in controlled fill or existing very stiff to hard lean clay at this location following the recommendations below. In addition, estimated settlement is expected to be less than one inch following these recommendations.

Site preparation should include grubbing the site. In addition, existing fill was noted in the westerly borings and fill soils are likely to persist along the westerly building wall. The fill was observed to be composed of lean clay substantially free of any deleterious material and appeared to be well compacted. However, if soft conditions, or any construction or other deleterious debris is encountered within this fill during foundation excavation, they should be removed in their entirety.

After making any grading excavation and before any fill placement, proof roll all cut and fill areas. Any rutting or pumping soils should be over excavated and replaced with controlled fill.

It is recommended that any new fill material be lean clay or better. However, use of granular fill material is preferred if feasible. Fill should be compacted to 95% of standard proctor maximum dry density (ASTM D 698). Non-granular fill material should be compacted at a moisture content ranging from two percentage points below optimum moisture content to four percentage points above optimum moisture content as determined by ASTM D 698.

Shallow foundations shall be embedded a minimum of 36 inches below finished grade for frost protection. Individual spread footings shall have a minimum width of 2.5 feet, while strip footings shall have a minimum width of 1.5 feet.

Site grading should be designed to maintain positive drainage away from the building. We recommend a minimum surface grade of 5 percent away from the building on gravel or landscape areas in the first 10 feet outside the building. We recommend a minimum surface grade of 2 percent away from the building on all paved surfaces in the first 20 feet away from the building.

NC/zt Attachments

PP = 4.50 tsf Torvane = 0.90 tsf

PP = 4.00 tsf

PP = 2.50 tsf Torvane = 0.65 tsf

PP = 2.25 tsf

PP = 3.50 tsf

PP = 4.50 tsf

0.0-0.6' GRAVEL

0.6-5.5' Brownish gray, LEAN CLAY, hard to very stiff, moist, Fill

5.5-16.5' Gray mottled black, LEAN CLAY trace fine gravel, very stiff to hard, moist, Glacial Till

Bottom of borehole at 16.5 feet.

2-5-5 (15)

2-3-3 (9)

2-4-5 (14)

2-3-6 (14)

Qu Test Results UCS = 4.00 ksf

MC = 23%

moist = 125.2 pcf

MC = 27.8%

MC = 16.8%

sat = 134 pcf(1)

MC = 24.2%

MC = 27.0%

sat = 123 pcf(1)

MC = 24.2%

sat = 126 pcf(1)

LL = 48

PL = 18

MC = 23.1%

sat = 127 pcf(1)

G ra ph ic

D ep th (f t)

BORING NO. NW Boring

F ie ld T es ts

Description

E le va tio n (f t)

S am pl e

T yp e

R E

C

(R Q

D

B lo w C o un ts (N

S he ar D at a

In de x T e st s

N60 = (Em/60)Nm N60 - Corrected N value for standard 60% SPT efficiency; Em - Measured hammer efficiency in percent; Nm - Observed N-value; (1) = Assumed, (2) = Actual

Missouri Department of Transportation Construction and Materials

Job No.: FI3125

Operator: Justin ReynoldsBent:

Easting: 2919326.4

Location Note:

Equipment: CME 45 , Date of Work: 12/22/25-12/22/25

Logged By: Noah Calton

Location:

Route:County: Daviess

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1366099.5

Time Change:

Design:

Depth to Water:

Elevation: 981.6

Requested Elevation:

Drilling Method: Hollow Stem AugerHammer Efficiency: 90.8%Drill No.: G-9577

Coordinate Zone: Missouri West Coordinate Proj. Factor:Coordinate System: U.S. State Plane 1983

Coordinate Datum: NAD 83 (CONUS)

* Persons using this information are cautioned that the materials shown are determined by the equipment noted and accuracy of the "log of materials" is limited thereby and by judgement of the operator. THIS INFORMATION IS FOR DESIGN PURPOSES ONLY.

Coordinate Units: U.S. Survey Feet

L E

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B O

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.G P

J

PP = 2.75 tsf

PP = 4.00 tsf

PP = 4.50 tsf

0.0-0.8' GRAVEL

0.8-10.1' Brownish gray, LEAN CLAY trace fine gravel, very stiff, moist

10.1-16.5' Tannish gray, LEAN CLAY trace fine gravel, hard, moist, Glacial Till

Bottom of borehole at 16.5 feet.

5-4-6 (15)

3-5-7 (18)

2-5-6 (17)

LL = 30

PL = 17

MC = 21.8%

sat = 128 pcf(1)

MC = 18.5%

sat = 132 pcf(1)

MC = 23.2%

sat = 127 pcf(1)

G ra ph ic

D ep th (f t)

BORING NO. NE Boring

F ie ld T es ts

Description

E le va tio n (f t)

S am pl e

T yp e

R E

C

(R Q

D

B lo w C o un ts (N

S he ar D at a

In de x T e st s

N60 = (Em/60)Nm N60 - Corrected N value for standard 60% SPT efficiency; Em - Measured hammer efficiency in percent; Nm - Observed N-value; (1) = Assumed, (2) = Actual

Missouri Department of Transportation Construction and Materials

Job No.: FI3125

Operator: Justin ReynoldsBent:

Easting: 2919357.6

Location Note:

Equipment: CME 45 , Date of Work: 12/22/25-12/22/25

Logged By: Noah Calton

Location:

Route:County: Daviess

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1366099.4

Time Change:

Design:

Depth to Water:

Elevation: 981.1

Requested Elevation:

Drilling Method: Hollow Stem AugerHammer Efficiency: 90.8%Drill No.: G-9577

Coordinate Zone: Missouri West Coordinate Proj. Factor:Coordinate System: U.S. State Plane 1983

Coordinate Datum: NAD 83 (CONUS)

* Persons using this information are cautioned that the materials shown are determined by the equipment noted and accuracy of the "log of materials" is limited thereby and by judgement of the operator. THIS INFORMATION IS FOR DESIGN PURPOSES ONLY.

Coordinate Units: U.S. Survey Feet

L E

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B O

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H O

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E D

.G

PP = 2.00 tsf

PP = 3.00 tsf

PP = 4.50 tsf

0.0-0.6' GRAVEL

0.6-5.4' Brown, LEAN CLAY trace fine gravel, trace Asphalt, stiff, moist, Fill

5.4-10.7' Dark brownish gray, LEAN CLAY, very stiff, moist

10.7-16.5' Tannish gray, LEAN CLAY trace fine gravel, very stiff, moist, Glacial Till

Bottom of borehole at 16.5 feet.

3-4-5 (14)

2-3-5 (12)

2-4-5 (14)

MC = 27.8%

sat = 122 pcf(1)

MC = 22.2%

sat = 128 pcf(1)

MC = 20.8%

sat = 130 pcf(1)

G ra ph ic

D ep th (f t)

BORING NO. SW Boring

F ie ld T es ts

Description

E le va tio n (f t)

S am pl e

T yp e

R E

C

(R Q

D

B lo w C o un ts (N

S he ar D at a

In de x T e st s

N60 = (Em/60)Nm N60 - Corrected N value for standard 60% SPT efficiency; Em - Measured hammer efficiency in percent; Nm - Observed N-value; (1) = Assumed, (2) = Actual

Missouri Department of Transportation Construction and Materials

Job No.: FI3125

Operator: Justin ReynoldsBent:

Easting: 2919317.5

Location Note:

Equipment: CME 45 , Date of Work: 12/22/25-12/22/25

Logged By: Noah Calton

Location:

Route:County: Daviess

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1366027

Time Change:

Design:

Depth to Water:

Elevation: 983.0

Requested Elevation:

Drilling Method: Hollow Stem AugerHammer Efficiency: 90.8%Drill No.: G-9577

Coordinate Zone: Missouri West Coordinate Proj. Factor:Coordinate System: U.S. State Plane 1983

Coordinate Datum: NAD 83 (CONUS)

* Persons using this information are cautioned that the materials shown are determined by the equipment noted and accuracy of the "log of materials" is limited thereby and by judgement of the operator. THIS INFORMATION IS FOR DESIGN PURPOSES ONLY.

Coordinate Units: U.S. Survey Feet

L E

T T

E R

B O

R E

H O

L E

M

O D

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.G

D T

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.G

PP = 2.00 tsf Torvane = 0.50 tsf

PP = 3.00 tsf

PP = 3.00 tsf Torvane = 0.75 tsf

PP = 3.50 tsf

PP = 2.50 tsf

PP = 4.00 tsf

0.0-0.8' GRAVEL

0.8-7.5' Brownish gray mottled black, LEAN CLAY trace fine gravel, very stiff, moist

7.5-16.5' Tannish gray, LEAN CLAY trace fine gravel, very stiff to hard, moist, Glacial Till

Bottom of borehole at 16.5 feet.

2-3-4 (11)

1-3-6 (14)

2-3-6 (14)

2-3-6 (14)

Qu Test Results UCS = 7.39 ksf

MC = 25%

moist = 122.3 pcf

Qu Test Results UCS = 6.60 ksf

MC = 18.1%

moist = 129.1 pcf

MC = 24.1%

LL = 45

PL = 21

MC = 26.1%

sat = 124 pcf(1)

MC = 26.6%

LL = 42

PL = 18

MC = 18.9%

sat = 132 pcf(1)

MC = 27.1%

sat = 123 pcf(1)

MC = 21.9%

sat = 128 pcf(1)

G ra ph ic

D ep th (f t)

BORING NO. SE Boring

F ie ld T es ts

Description

E le va tio n (f t)

S am pl e

T yp e

R E

C

(R Q

D

B lo w C o un ts (N

S he ar D at a

In de x T e st s

N60 = (Em/60)Nm N60 - Corrected N value for standard 60% SPT efficiency; Em - Measured hammer efficiency in percent; Nm - Observed N-value; (1) = Assumed, (2) = Actual

Missouri Department of Transportation Construction and Materials

Job No.: FI3125

Operator: Justin ReynoldsBent:

Easting: 2919364.3

Location Note:

Equipment: CME 45 , Date of Work: 12/22/25-12/22/25

Logged By: Noah Calton

Location:

Route:County: Daviess

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1366034.9

Time Change:

Design:

Depth to Water:

Elevation: 981.7

Requested Elevation:

Drilling Method: Hollow Stem AugerHammer Efficiency: 90.8%Drill No.: G-9577

Coordinate Zone: Missouri West Coordinate Proj. Factor:Coordinate System: U.S. State Plane 1983

Coordinate Datum: NAD 83 (CONUS)

* Persons using this information are cautioned that the materials shown are determined by the equipment noted and accuracy of the "log of materials" is limited thereby and by judgement of the operator. THIS INFORMATION IS FOR DESIGN PURPOSES ONLY.

Coordinate Units: U.S. Survey Feet

L E

T T

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B O

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H O

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CLIENT

PROJECT NUMBER FI3125

PROJECT NAME Gallatin Maintenance Shed

PROJECT LOCATION

ABBREVIATIONS

TV

PID

UC

ppm

TORVANE

PHOTOIONIZATION DETECTOR

UNCONFINED COMPRESSION

PARTS PER MILLION

Split-Spoon Sampler

Shelby Tube

SAMPLER SYMBOLSLITHOLOGIC SYMBOLS

(Unified Soil Classification System)

WELL CONSTRUCTION SYMBOLS

KEY TO SYMBOLS

Water Level at Time of Drilling

Water Level at End of Drilling

Water Level after Drilling

LL

PI

W

DD

NP

-200

PP

Qu

LIQUID LIMIT (%)

PLASTIC INDEX (%)

MOISTURE CONTENT (%)

DRY DENSITY (PCF)

NON PLASTIC

PERCENT PASSING NO. 200 SIEVE

POCKET PENETROMETER (TSF)

UNCONFINED COMPRESSIVE STRENGTH (PSF)

USCS Low Plasticity Clay

Fill (made ground)

USCS Poorly-graded Gravel

Glacial Till

K E

Y T

O S

Y M

B O

L S

M

O D

O T

.G D

T

/5

/2

:5

Z

C

M \S

G \G

IN

T

\P R

O

JE

C T

F

IL

E S

\F I3

D A

V

IE

S S

C O

G

A L

L A

T

IN

M A

IN

T

E N

A N

C E

S H

E D

.G P

Missouri Department of Transportation

30 17 2.75

4.0

4.5

48 18

4.5

4.0

2.5

2.25

3.5

4.5

4.00

2.0

3.0

3.0

3.5

2.5

4.0

7.39

6.60

2.0

3.0

4.5

PROJECT LOCATION

CLIENT

USCS Poorly-graded Gravel USCS Low Plasticity Clay Glacial Till

Fill (made ground) E le va tio n ft)

Distance Along Baseline (ft)

PROJECT NAME Gallatin Maintenance Shed

PROJECT NUMBER FI3125

SUBSURFACE DIAGRAM

M

O D

O T

D Y

N A

M

IC

F E

N C

E

J

P

-A

.G P

J

/5

/2

:4

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M \S

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\P R

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C T

F

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E S

\F I3

D A

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S S

C O

G

A

LL

A T

IN

M

A

IN

T E

N A

N C

E S

H E

D .G

P J

Missouri Department of Transportation

NE Boring

ELEV.981.10

LL

PL

PP

(tsf)

N60 or

[RQD]

MC

Qu (ksf)

NW Boring

ELEV.981.60

LL

PL

PP

(tsf)

N60 or

[RQD]

MC

Qu (ksf)

SE Boring

ELEV.981.70

LL

PL

PP

(tsf)

N60 or

[RQD]

MC

Qu (ksf)

SW Boring

ELEV.983.00

LL

PL

PP

(tsf)

N60 or

[RQD]

MC

Qu (ksf)