Geotechnical_Engineering_Exploration_Report.pdf

Cal -Tech Testing, Inc.

• Engineering

• Geotechnical

• Environmental

P.O. Box 1625 • Lake City, FL 32056 Tel. (386) 755-3633 • Fax (386) 752-5456

450 SR 13N, Suite 106-308, Jacksonville, FL 32259 Tel. (904) 381-8901 • Fax (904) 381-8902

LABORATORIES

January 27, 2022

Daniel Nickols, P.E.

GAI Consultants 618 E. South Street, Suite 700 Orlando, Florida 32801

RE: Geotechnical Engineering Exploration Report

Leesburg International Airport-Hangar Complex Development Leesburg, Florida Cal-Tech Testing, Inc. Project No. 21-00546-01

Dear Mr. Daniel Nickols, P.E.:

This report presents the results of our geotechnical engineering exploration for the proposed hangar complex at the Leesburg International Airport in Leesburg, Florida.

The purposes of our geotechnical engineering exploration were to obtain subsurface soil information, perform analyzes and evaluations and provide site preparation and foundation support recommendations in regards to the construction of the proposed hangar structures.

SITE AND PROJECT INFORMATION

Based on observations during our field exploration, the project site consists of land parcels, currently used as overflow vehicular parking, with ground surface elevations increasing up to approximately 10 ft. in the south-north direction toward their boundary line with US 441.

Information you provided to us indicates the project consists of the development of a 4-hangar structures complex with finished floor elevations up to approximately 10 ft lower than the existing ground surface elevations. No information in regards to maximum and minimum column loads was provided for preparation of this report.

SUBSURFACE SOIL FIELD EXPLORATION

Our field exploration was performed between January 3 and 6, 2022, and consisted of drilling 12, 30-ft-deep, Standard Penetration Test (SPT) borings (B1 through B12) within the proposed hangar structures footprints. In addition, we obtained near-the-surface soil

Geotechnical Engineering Exploration Report Leesburg International Airport-Hangar Complex Development

Cal-Tech Testing, Inc. Project No.21-00546-01 bulk samples from (2) locations for subgrade strength determination by the California Bearing Ratio (CBR). The SPT boring and soil bulk sample location coordinates were obtained by superposition of the sketch on a web-available mapping system and laid out by our field crew using a hand-held Global Positioning System (GPS) device. Refer to the enclosed Boring Location Plan.

We contacted Sunshine State One Call of Florida to mark out existing, known underground utilities prior to the beginning of our field investigation.

The sampling and penetration procedures of the SPT borings were in general accordance with ASTM D 1586 Penetration Test and Split-Barrel Sampling of Soil, using a power rotary drill rig. The standard penetration tests were performed continuously through the upper 10 ft. and at 5 ft. intervals thereafter to the boring termination depths by driving a standard 13/8 inch I.D. and 2 inches O.D. split-spoon sampler with automatic 140-lb hammer falling 30 inches. The number of hammer blows required to drive the sampler a total of 24 inches (i.e. boring upper 10 ft.) or 18 inches, in 6-inch increments, were recorded in the boring logs. The penetration resistance, N-values, is the summation of the second and third 6-inch increments. The penetration resistance is used as an index to derive soil parameters from various empirical correlations. At completion, each bore hole was backfilled with soil cuttings. Detailed boring logs with location coordinates are enclosed to this report.

All soil samples were delivered to our soil laboratory for review by our geotechnical engineer and additional testing as required for classification.

SUBSURFACE SOIL CONDITIONS

GENERALIZED SOIL PROFILE

A generalized subsurface soil profile inferred from the result of the borings consists of a SAND stratum with an interbedded 4 ft. to 12 ft. thick SILTY SAND layer with a top depth varying from approximately 8 ft. to 18 ft. The SILTY SAND layer was not encountered at boring locations B6 and B10.

Plastic, metal and fabric debris were encountered at a depth of 4 ft. to 6 ft. while drilling boring location B6.

The soil penetration resistance N-values revealed a predominant, Very Loose (i.e. N<4) to Loose (i.e. 4<N<10) relative density zone in the SAND stratum upper 6 ft. to 10 ft. and a Medium Dense (i.e. 11<N<30) to Dense (i.e. 31<N<50) to Very Dense (i.e. N>50) thereafter to the termination depth of the borings at 30 ft.

Detailed subsurface soil conditions including strata soil classification and N-values are shown in the boring logs enclosed to this report.

Groundwater The groundwater was first encountered at depths from 7 ft. to 8 ft. at the borings with the lowest ground surface elevations and from 10 ft. to 15 ft. at the borings with higher ground surface elevations. The groundwater level at each boring location is shown in the enclosed Boring Logs.

The United States Department of Agriculture (USDA), National Resources Conservation Service (NRCS) indicates the site groundwater deeper than 80 inches.

Our review of the Hydrology Data from station No. 32053092-Harris Bayou Outlet East (approx. 1.5 miles from the project site) in the St. Johns River Water Management District, available on the web, indicates water levels fluctuated from 0.66 ft. to 3.80 ft.

(averaged 1.62 ft) through the las 10 years.

Observations of typical reddish and yellowish mottles and concretions of the sand particles at depths of about 6 ft. for borings B1 through B3, about 8-9 ft. for borings B4 though B9 and probably 10-11 ft. for B10 through B12 (no soil samples were retrieved from 10 to 12 ft depths) appear to indicate the Seasonal High Ground water table at those locations.

Based on the Federal Emergency Administration (FEMA) Flood Map No. 12069C0333E, effective December 18, 2012, the hangar complex site is located within an “Area of Minimal Flood Hazard-Zone X”.

SUBGRADE SOIL STRENGTH

The CBR laboratory test results indicate the strength of the subgrade soil upper 12 inches below the topsoil at the sample locations are:

CBR No.

Sample Depth

(in) CBR1 (%) Max. Dry Density2

(lb/ft3) Optimum Moisture

CBR1 0-18 29.8 112.9 10.5

CBR2 0-18 20.6 111.6 10.2

1-CBR value at 100% compaction per ASTM D 1557 2-Maximum Dry Density per ASTM D 1557

Reports of performed Laboratory California Bearing Ratio & Modified Proctor Test sheets are enclosed to this report.

GEOTECHNICAL EVALUATIONS & RECOMMENDATIONS

HANGAR STRUCTURES

The geotechnical consideration for support of the proposed hangar structures is the predominant, Very Loose to Loose relative density encountered in the SAND stratum upper 6 ft. to 10 ft; however, most of these soils will be cut down to establish the proposed structures’ finished floor elevations. Therefore, support of the hangar structures on footings will be adequate after performance of a site preparation in accordance with our recommendations in the following paragraphs.

Prior to the site preparation and after lowering the existing ground surface to the proposed subgrade elevations, the area at and around boring location B6 should be explored with test pits to completely remove the encountered debris. Subsequently, the entire site should be proofrolled with several passes of a large vibratory roller (i.e.

Ingersoll Rand SD-100D, or equivalent) until minimal indentation of the subgrade surface is attained.

After satisfactory performance of the recommended site preparation work, the proposed hangar structures could be supported on footings bearing on the exiting sand soils and designed with a safe soil contact pressure of 2,000 lb/ft2 and settlements within 1 inch.

An allowable sliding resistance of 0.30 could be used for the concrete footings cast directly on the existing sand.

After excavation for construction of the footings, their subgrade upper 12 inches should be compacted to at least 95% of the material’s Maximum Dry Density (ASTM D 1557).

The ground floors could be designed on grade after compaction of the subgrade to 95% of the material’s Maximum Dry Density (ASTM D 1557).

TAXIWAY PAVEMENTS

In accordance with the United States Department of Transportation Federal Aviation Administration (FAA) guidelines, the SAND subgrade expected after lowering the existing ground surface elevations is graded as “Fair to Good” for pavement foundation when not subject to frost action; however, the relative density through the upper 2 ft. to 4

ft. should be improved to the FAA requirements for the airport’s design aircraft.

Improvement of the subgrade relative density through the upper 12 inches is straightforward and achieved with several passes of a large vibratory roller; however, excavation and backfilling in lifts and with groundwater control might be necessary to comply with FAA compaction requirements at deeper layers of the subgrade.

Other aspects of the taxiway pavement thickness and strength should be designed in accordance with the FAA current guidelines for the airport’s design aircraft.

UNDERGROUND UTILITIES

Installation of underground utilities should be performed in accordance with the project drawings and specifications. Based on the field exploration results, the SAND is expected to be suitable for use as backfill material; however, silty sand soils with fines content in excess of about 12% are expected to be cumbersome to reach compaction when not at their Optimum Moisture.

Backfilling utility trenches should be performed by placing 12-in thick lifts of the sand soils compacted to 95% of the material’s Maximum Dry Density as per (ASTM D-1557).

CAL-TECH TESTING, INC.

P.O. BOX 1625

Lake City, Florida 32056-1625 Phone: (386) 755-3633

Fax: (386) 752-5456

BORING LOCATION PLAN

Leesburg Int’l Airport-Hangar Complex Development

N

SS

SS

SS

SS

SS

SS

SS

SS

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SM) Light brownish gray SILTY SAND with red mottles

(SM) Light gray SILTY SAND with red mottles

(SM) Gray SILTY SAND

(SP) Very dark gray SAND

(SP) Dark reddish brown SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'39.96" W81°48'28.31"

SS=Split Spoon sampler

2-3-4-4 (7)

3-3-3-3 (6)

2-2-2-3 (4)

9-18-21-24 (39)

14-18-21-

(39)

9-12-8 (20)

16-18-18 (36)

14-16-27 (43)

16-16-12 (28)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/3/22 COMPLETED 1/3/22

AT TIME OF DRILLING ---

AT END OF DRILLING 8.00 ft / Elev -8.00 ft

AFTER DRILLING ---

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REMARKS

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MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B1

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024 Telephone: 386-755-3633 Fax: 386-755-3633

SS

SS

SS

SS

SS

SS

SS

(SP) Gray SAND with limerock fragments

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SM) Light gray SILTY SAND

(SP) Pinkish gray SAND

(SP) Reddish gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'39.80" W81°48'27.45"

SS=Split Spoon sampler

Red mottles and concretions observed from 6 ft. to 8 ft. depths

4-9-8-5 (17)

4-5-4-4 (9)

2-3-3-2 (6)

2-3-9-16 (12)

13-17-12-

(29)

12-14-16 (30)

16-25-27 (52)

9-12-18 (30)

12-18-19 (37)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/3/22 COMPLETED 1/3/22

AT TIME OF DRILLING ---

AT END OF DRILLING 8.00 ft / Elev -8.00 ft

AFTER DRILLING ---

S Y

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SAMPLE DATA

REMARKS

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MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B2

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Gray SAND with limerock fragments

(SP) Dark grayish brown SAND

(SP) Yellowish brown SAND

(SP) Gray SAND

(SP) Light gray SILTY SAND

(SP) Reddish to dark reddish to light reddish brown

SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'39.40" W81°48'26.55"

SS=Split Spoon sampler

3-6-8-10 (14)

10-12-9-9 (21)

4-5-3-4 (8)

2-3-3-2 (6)

2-2-2-3 (4)

11-16-15 (31)

11-22-19 (41)

10-10-11 (21)

7-6-7 (13)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/3/22 COMPLETED 1/3/22

AT TIME OF DRILLING ---

AT END OF DRILLING 7.00 ft / Elev -7.00 ft

AFTER DRILLING ---

S Y

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(f t)

SAMPLE DATA

REMARKS

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MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B3

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SP) Yellowish red SAND

(SM) Light gray SILTY SAND

(SP) Light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'41.63" W81°48'28.48"

SS=Split Spoon sampler

Reddish brown sand concretions observed from 8 ft. to 10 ft.

depths

4-5-4-5 (9)

3-2-2-2 (4)

2-1-2-1 (3)

2-1-2-2 (3)

3-15-17-27 (32)

8-10-11 (21)

6-9-10 (19)

6-7-8 (15)

6-8-9 (17)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/4/22 COMPLETED 1/4/22

AT TIME OF DRILLING ---

AT END OF DRILLING 13.00 ft / Elev -13.00 ft

AFTER DRILLING ---

S Y

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SAMPLE DATA

REMARKS

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(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B4

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark grayish brown SAND

(SP) Yellowish brown SAND

(SP) Reddish yellow SAND

(SM) Light gray SILTY SAND

(SP) Light brownish gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'41.26" W81°48'27.31"

SS=Split Spoon sampler

Reddish brown sand concretions observed from 8 ft. to 10 ft.

depths

4-4-5-5 (9)

3-3-3-3 (6)

2-2-1-2 (3)

2-1-2-2 (3)

5-4-9-21 (13)

14-17-24 (41)

7-5-5 (10)

6-8-12 (20)

10-13-14 (27)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/4/22 COMPLETED 1/4/22

AT TIME OF DRILLING ---

AT END OF DRILLING 12.00 ft / Elev -12.00 ft

AFTER DRILLING ---

S Y

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(f t)

SAMPLE DATA

REMARKS

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(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B5

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark grayish brown SAND with limerock fragments

(SP) NO RECOVERY

(SP) Yellowish brown SAND

(SP) Pinkish gray SAND

(SP) Light gray SAND

(SP) Grayish brown SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'40.74" W81°48'26.05"

SS=Split Spoon sampler

A piece of metal recovered in the spoon from 4 ft. to 6 ft. depth

Reddish yellow concretions observed from 8 ft. to 10 ft.

depths

Sand concretions observed from

13.5 ft. to 15 ft. depths.

Large piece of fabric and plastic fragments retrieved while drilling from 15 ft. to 28.5 ft. depths. Poor mud circulation.

Pieces of metal observed in the samples from 23.5 ft. to 25 ft. and from 28.5 ft. to 30 ft. depths

2-3-3-4 (6)

3-2-2-2 (4)

2-2-2-2 (4)

3-2-3-2 (5)

3-5-8-13 (13)

34-50/2"

20-27-34 (61)

9-14-16 (30)

8-9-13 (22)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/6/22 COMPLETED 1/6/22

AT TIME OF DRILLING ---

AT END OF DRILLING 10.00 ft / Elev -10.00 ft

AFTER DRILLING ---

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REMARKS

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MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

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BORING NUMBER B6

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

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C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Yellowish brown SAND

(SP) Brownish yellow SAND

(SM) Pinkish gray SILTY SAND

(SM) Gray SILTY SAND

(SP) Gray SAND

(SP) Light reddish brown SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'42.93" W81°48'27.92"

SS=Split Spoon sampler

Yellowish red mottles observed from 8 ft. to 10 ft. depths

Yellowish red mottles and concretions observed from 13.5 ft.

to 15 ft. depths

3-4-3-2 (7)

2-2-2-2 (4)

2-2-2-2 (4)

3-3-3-3 (6)

3-2-3-4 (5)

4-10-12 (22)

9-12-17 (29)

23-26-20 (46)

7-8-11 (19)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/5/22 COMPLETED 1/5/22

AT TIME OF DRILLING ---

AT END OF DRILLING 15.00 ft / Elev -15.00 ft

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B7

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

Y L

A T

E S

T U

P D

A T

E .G

D T

/7 /2

:5

C

:\P R

O G

R A

M F

IL

E

S

X

G

IN

T

\P R

O

JE

C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark yellowish brown SAND

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SP) Yellowish red SAND

(SM) Reddish yellow SILTY SAND

(SM) Gray SILTY SAND

(SP) Light gray and yellow to light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'42.36" W81°48'26.60"

SS=Split Spoon sampler

2-4-3-3 (7)

2-2-2-2 (4)

1-2-1-1 (3)

2-1-1-1 (2)

1-2-2-3 (4)

8-16-16 (32)

17-26-32 (58)

11-13-15 (28)

10-11-14 (25)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/5/22 COMPLETED 1/5/22

AT TIME OF DRILLING ---

AT END OF DRILLING 13.00 ft / Elev -13.00 ft

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B8

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

Y L

A T

E S

T U

P D

A T

E .G

D T

/7 /2

:5

C

:\P R

O G

R A

M F

IL

E

S

X

G

IN

T

\P R

O

JE

C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark grayish brown SAND

(SP) Dark yellowish brown SAND

(SP) Light yellowish brown SAND

(SP) Yellowish red SAND

(SM) Gray SILTY SAND

(SP) Light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'41.89" W81°48'25.55"

SS=Split Spoon sampler

Zero (0) blow count=weight of hammer

Yellowish red concretions observed from 9 ft. to 10 ft.

depths

1-3-3-3 (6)

2-2-1-1 (3)

1-1-1-1 (2)

0-0-0-0 (0)

2-2-3-4 (5)

20-50/4"

12-13-17 (30)

12-16-20 (36)

10-19-21 (40)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/6/22 COMPLETED 1/6/22

AT TIME OF DRILLING 12.00 ft / Elev -12.00 ft

AT END OF DRILLING ---

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B9

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

Y L

A T

E S

T U

P D

A T

E .G

D T

/7 /2

:5

C

:\P R

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R A

M F

IL

E

S

X

G

IN

T

\P R

O

JE

C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark yellowish brown SAND

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SP) Yellowish red SAND

(SP) Reddish brown SAND

(SP) Light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'43.96" W81°48'27.51"

SS=Split Spoon sampler

Yellowish red concretions observed from 13.5 ft. to 15 ft.

depths

3-3-3-2 (6)

2-1-2-1 (3)

1-1-2-2 (3)

2-1-2-1 (3)

2-3-2-3 (5)

3-5-7 (12)

10-10-10 (20)

39-50/3"

11-11-13 (24)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/5/22 COMPLETED 1/5/22

AT TIME OF DRILLING ---

AT END OF DRILLING 14.50 ft / Elev -14.50 ft

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B10

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

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A T

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T U

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E .G

D T

/7 /2

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C

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S

X

G

IN

T

\P R

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C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Dark yellowish brown SAND

(SP) Yellowish brown SAND

(SP) Light yellowish brown SAND

(SP) Yellowish red SAND

(SM) Light gray SILTY SAND

(SP) Pinkish to light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'43.80" W81°48'26.36"

SS=Split Spoon sampler

Yellowish red concretions observed from 13.5 ft. to 15 ft.

depths

2-2-2-2 (4)

1-2-1-1 (3)

1-1-1-1 (2)

2-1-2-3 (3)

2-3-3-4 (6)

3-5-6 (11)

3-4-4 (8)

14-20-26 (46)

10-11-15 (26)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/5/22 COMPLETED 1/5/22

AT TIME OF DRILLING ---

AT END OF DRILLING 13.50 ft / Elev -13.50 ft

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B11

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

Y L

A T

E S

T U

P D

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E .G

D T

/7 /2

:5

C

:\P R

O G

R A

M F

IL

E

S

X

G

IN

T

\P R

O

JE

C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024

SS

SS

SS

SS

SS

SS

SS

(SP) Grayish brown SAND

(SP) Yellowish brown SAND

(SM) Light gray SILTY SAND

(SP) Reddish brown SAND

(SP) Light gray SAND

Bottom of borehole at 30.0 feet.

Boring Location Coordinates:

N28°49'43.23" W81°48'25.00"

SS=Split Spoon sampler

Yellowish red concretions observed from 13.5 ft. to 15 ft.

depths

3-4-3-3 (7)

2-2-2-1 (4)

1-1-1-1 (2)

1-1-2-2 (3)

2-2-2-3 (4)

2-4-6 (10)

4-3-9 (12)

16-19-20 (39)

7-9-10 (19)

NOTES Elev. refered to ground surface

GROUND ELEVATION 0 ft

LOGGED BY B.S.

DRILLING METHOD Rotary Mud Drilling/SPT

HOLE SIZE 3-in dia. x 30 ft. depth

DRILLING CONTRACTOR Cal-Tech Testing, Inc. GROUND WATER LEVELS:

CHECKED BY I.M.

DATE STARTED 1/6/22 COMPLETED 1/6/22

AT TIME OF DRILLING ---

AT END OF DRILLING 13.00 ft / Elev -13.00 ft

AFTER DRILLING ---

S Y

M B

O L

LO

G

E

LE

V

(f t)

-5

-10

-15

-20

-25

-30

D E

P T

H S

C A

LE

(f t)

SAMPLE DATA

REMARKS

T Y

P E

N U

M B

E R

MATERIAL DESCRIPTION

(DRILLING FLUID, DEPTH OF CASING,

FLUID LOSS, DRILLING RESISTANCE, ETC.)

R E

C O

V E

R Y

(R

Q D

B

LO

W C

O U

N T

S (N

V A

LU

E

BORING NUMBER B12

CLIENT GAI Consultants

PROJECT NUMBER 21-00546-01

PROJECT NAME Leesburg Int'l Airport-Hangar Complex Development

PROJECT LOCATION Leesburg, Florida

G E

O T

E C

H B

H C

O

LU

M N

S

D A

T A

E N

T R

Y L

A T

E S

T U

P D

A T

E .G

D T

/7 /2

:5

C

:\P R

O G

R A

M F

IL

E

S

X

G

IN

T

\P R

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C T

S \L

E E

S B

U R

G

IN

T E

R N

A T

IO

N

A L

A

IR

P O

R T

-H A

N G

A R

C O

M P

LE

X

D E

V E

LO

P

M E

N T

.G P

J Cal-Tech Testing, Inc.

3309 SR 247

Lake City, FL 32024