Boring Report.pdf

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MEMORANDUM

Missouri Department of Transportation

Construction & Materials Geotechnical Section

TO: Kevin Griep

CC: Randy Whyde

FROM: Matthew G. Kistler, E.I.

Intermediate Geotechnical Specialist

Zachary Troesser, P.E.

Geotechnical Engineer

DATE: June 17, 2025

SUBJECT: Foundation Investigation for New Truck Wash Job No. Fi3100 Nashua Maintenance Facility, Platte County

A foundation investigation has been conducted for a new 30 by 55 feet truck wash structure in Platte County for the Nashua Maintenance Facility, as requested by Randy Whyde on 18 November, 2024.

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 Kansas City District Survey.

Existing Conditions The building footprint is currently occupied by a 45 by 60 feet fabric truck wash structure. This structures and related infrastructure are expected to be removed before construction of the planned facility. The SW Boring was omitted from our investigation due to the presence of unmarked and private buried sewer utilities. In addition, a foundation investigation report completed for the existing structure indicated similar soil conditions, reinforcing our confidence in soil conditions with the omission of the SW boring.

All three borings encountered fill materials underlain by lean clays and sands. The NW Boring encountered a calcareous boulder at a depth of 10.6 feet which caused auger refusal at 11.7 feet.

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 used for the proposed structure at this location following the recommendations below. In addition, estimated settlement is expected to be less than one inch following these recommendations.

• The existing structure should be removed in its entirety, including subsurface elements. In addition, all overlying deleterious fill material such as asphalt, millings, concrete debris, and crushed aggregate base, including those exposed during demolition of existing structures should be over excavated and removed from the building site and should not be used as structural fill for the proposed building.

Fi3100 Nashua Truck Wash June 17, 2025

• After making any grading excavation and before any fill placement, proof roll all cut and fill areas with a fully loaded tandem axle dump truck. Any rutting or pumping soils should be over excavated and replaced with controlled fill.

• If the excavation exposes softer soils than encountered in borings, contact the Geotechnical Section. In this case it is likely the existing structure has influenced the soil strength and additional soil sampling, or subgrade evaluation may be necessary.

• 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 30 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.

MK/ZT/kb Attachments

PP = 2.50 tsf

PP = 3.00 tsf

PP = 3.00 tsf

PP = 2.75 tsf

PP = 3.00 tsf

PP = 3.75 tsf

0.0-1.1' CRUSHED AGGREGATE BASE

1.1-1.6' Concrete debris

1.6-5.5' Dark gray, LEAN CLAY with fine gravel, very stiff, moist

5.5-6.5' Light gray, LEAN CLAY, very stiff, moist

6.5-10.5' Dark gray, LEAN CLAY trace wood fragments, stiff to very stiff, moist

10.5-16.5' Gray mottled brown, LEAN CLAY scattered fine gravel, stiff to very stiff, moist, (Glacial Till)

Bottom of borehole at 16.5 feet.

4-5-8 (20)

3-7-7 (21)

3-3-6 (14)

3-4-6 (15)

3-6-8 (21)

3-5-7 (18)

MC = 22.3%

sat = 128 pcf(1)

MC = 20.9%

sat = 129 pcf(1)

LL = 36

PL = 20

MC = 21.4%

sat = 129 pcf(1)

MC = 19.9%

sat = 131 pcf(1)

LL = 39

PL = 19

MC = 19.0%

sat = 132 pcf(1)

MC = 21.1%

sat = 129 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.: Fi3100

Operator: Bradley WadlowBent:

Easting: 2759580.6

Location Note:

Equipment: CME 45 ,Split-Spoon Sampler

Date of Work: 02/24/25-02/24/25

Logged By: Matthew Kistler

Location: Nashua Maintenance Facility

Route:County: Platte

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1144629.2

Time Change:

Design: 30'x55' Truck Wash

Depth to Water:

Elevation: 968.8

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

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PP = 1.75 tsf

PP = 2.00 tsf

0.0-0.5' CRUSHED AGGREGATE BASE

0.5-3.1' Grayish brown, LEAN CLAY trace fine gravel, stiff, moist

3.1-3.6' Dark gray, LEAN CLAY, stiff, moist

3.6-4.9' Brownish gray, LEAN CLAY, stiff, moist

4.9-8.6' Light gray mottled orangish brown, LEAN CLAY with fine gravel, very stiff, moist

8.6-10.1' Brown, SAND with lean clay, medium dense, moist

10.1-10.6' Light gray mottled orangish brown, LEAN CLAY with fine gravel, moist 10.6-11.7' BOULDERS, Calcareous

Bottom of borehole at 11.7 feet.

1-3-4 (11)

4-5-8 (20)

2-3-4 (11)

4-34/0.2'

MC = 29.0%

sat = 121 pcf(1)

MC = 19.1%

sat = 131 pcf(1)

LL = 44

PL = 18

MC = 19.5%

sat = 131 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.: Fi3100

Operator: Bradley WadlowBent:

Easting: 2759506.3

Location Note:

Equipment: CME 45 ,Split-Spoon Sampler

Date of Work: 02/24/25-02/24/25

Logged By: Matthew Kistler

Location: Nashua Maintenance Facility

Route:County: Platte

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1144641.1

Time Change:

Design: 30'x55' Truck Wash

Depth to Water:

Elevation: 967.7

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

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PP = 2.25 tsf

PP = 1.50 tsf

PP = 1.25 tsf

PP = 3.75 tsf

PP = 1.50 tsf

0.0-0.8' CRUSHED AGGREGATE BASE

0.8-3.1' Asphalt debris and millings

3.1-11.0' Dark gray, LEAN CLAY, stiff, moist

11.0-12.7' Grayish brown, SAND with lean clay, medium dense, moist to wet

12.7-14.5' Gray mottled brown, LEAN CLAY scattered fine gravel, very stiff, moist, (Glacial Till)

14.5-16.5' Tan, SANDY LEAN CLAY, stiff, wet

Bottom of borehole at 16.5 feet.

4-2-6 (12)

3-5-8 (20)

2-3-4 (11)

3-5-7 (18)

17-9-15 (36)

4-7-10 (26)

MC = 25.1%

sat = 125 pcf(1)

MC = 23.9%

sat = 126 pcf(1)

MC = 25.7%

sat = 124 pcf(1)

LL = 38

PL = 21

MC = 19.3%

sat = 131 pcf(1)

MC = 17.1%

sat = 134 pcf(1)

MC = 18.1%

sat = 133 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.: Fi3100

Operator: Bradley WadlowBent:

Easting: 2759577.7

Location Note:

Equipment: CME 45 ,Split-Spoon Sampler

Date of Work: 02/24/25-02/24/25

Logged By: Matthew Kistler

Location: Nashua Maintenance Facility

Route:County: Platte

Skew:

Station:

Offset:

Requested Station:

Requested Offset:

Requested Northing:

Requested Easting:

Depth Hole Open:

Northing: 1144573.6

Time Change: 0 hours

Design: 30'x55' Truck Wash

Depth to Water: 14.5

Elevation: 968.8

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

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CLIENT

PROJECT NUMBER Fi3100

PROJECT NAME Wash Bay

PROJECT LOCATION Nashua Maintenance Facility

ABBREVIATIONS

TV

PID

UC

ppm

TORVANE

PHOTOIONIZATION DETECTOR

UNCONFINED COMPRESSION

PARTS PER MILLION

Split-Spoon Sampler

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)

Boulders and cobbles

USCS Low Plasticity Clay

USCS Low Plasticity Sandy Clay

Fill (made ground)

USCS Well-graded Gravel

USCS Poorly-graded Sand

K E

Y T

O S

Y M

B O

LS

M O

D O

T

8.

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P

LA

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W A

S H

.G P

J MoDOT-Geotechnical Section 1617 Missouri Blvd Jefferson City, MO 65109

0 10 20 30 40 50 60 70 80 90 100

0 10 20 30 40 50 60 70 80 90 100

PROJECT LOCATION Nashua Maintenance Facility

CLIENT

USCS Well-graded Gravel Fill (made ground) USCS Low Plasticity Clay

USCS Poorly-graded Sand Boulders and cobbles USCS Low Plasticity Sandy Clay

E le va tio n ft)

Distance Along Baseline (ft)

PROJECT NAME Wash Bay

PROJECT NUMBER Fi3100

SUBSURFACE DIAGRAM

M

O D

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D Y

N A

M

IC

F E

N C

E

J

P

-A

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L A

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A N

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W A

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.G P

J

MoDOT-Geotechnical Section 1617 Missouri Blvd Jefferson City, MO 65109

2.5

3.0

3.0

2.75

3.0

3.75

1.75

3.0

2.0

2.25

3.0

1.5

1.25

3.75

1.5

PP

(tsf)

N60 or

[RQD]

NW Boring

ELEV.967.70

PP

(tsf)

N60 or

[RQD]

PP

(tsf)

N60 or

[RQD]

SE Boring

ELEV.968.80

NE Boring

ELEV.968.80