panama city office

P a n a m a C i t y O f f i c e

7500 McElvey Road, Suite A Panama City Beach, FL 32408

Tel: (850) 769-4773 Fax: (850) 872-9967 www.soearth.com

FL Certificate of Authorization #3737

MOBILE · MONTGOMERY · SUMMERDALE · DESTIN · PANAMA CITY · TALLAHASSEE · BATON ROUGE · MANDEVILLE · NEW ORLEANS

Geotechnical, Environmental & Construction Materials Testing

Baskerville-Donovan, Inc. September 19, 2016 449 W Main Street File No.: P16-0796 Pensacola, FL 32502 Attention: Mr. Dave Hemphill Subject: Sediment Sampling and for the Proposed Dredging at Lake Huntington in Panama

City, Florida Dear Mr. Hemphill: Southern Earth Sciences, Inc., has completed the geotechnical services for the Lake Huntington dredging project in Panama City, Florida. Our services were performed per your request. This report presents the results of our field and laboratory testing. FIELD INVESTIGATIVE PROCEDURES: On September 12, 2016, sediment samples were obtained by using a continuous PVC macro-core liner, driven by hand into the bottom. The samples were obtained by our personnel and the samples were delivered in air tight containers to our laboratory where the samples were then opened, classified, and prepared for laboratory testing. The approximate locations are indicated on the attached plan. Our test locations were measured from existing landmarks with a 100-foot tape. Therefore, test locations should be considered approximate. LABORATORY TESTING PROCEDURES In the laboratory, the bottom samples were extracted for visual classification and assignment of laboratory tests. Soil samples were visually classified in the laboratory in accordance with the Unified Soil Classification System. Laboratory tests were assigned based upon the visual classification of the soils. Laboratory classification testing included grain size analyses. Grain Size Analyses: Four (4) samples were selected to determine their grain size distribution in accordance with ASTM D-6913-04(2009). The laboratory test results are shown on the boring logs at the depth of the tested sample. Grain size distribution curves are included in the Appendix. SITE AND SOIL CONDITIONS: The dredging will take place north and south of the 15th Street bridge crossing Lake Huntington. Test locations were performed north (N-1) and south (S-1) of the bridge. Based upon the provided topographic information, the elevations range from 0 to -4 Feet on the south

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Baskerville-Donovan, Inc. Lake Huntington

side and 0 to -6 Feet on the north side. The provide plans also indicate the proposed dredge elevation is -3.5 Feet. At both test locations the sediment soils encountered were sands. The sands vary in color and texture and were generally clean sands. Trace amounts of organic matter were found at test location S-1 (South). The samples were obtained on September 12, 2016 around Low Tide, according to NOAA online publications. Low Tide for this date is +0.5 Ft. The samples were obtained in approximately 1.0 to 1.1 feet of water. GENERAL COMMENTS The soil samples obtained during this geotechnical investigation will be held for a period of thirty (30) days. After this period, the samples will be disposed of unless we are specifically requested, in writing, to do otherwise. A reasonable storage fee will be charged for samples stored for longer periods. While the soil sampling locations performed for this project are representative of subsurface soil conditions at their respective locations and for their respective vertical reaches, local variations of the subsurface materials are anticipated and may be encountered. We appreciate the opportunity to be of service to you on this project. Should additional information be required, please advise. Yours Very Truly, SOUTHERN EARTH SCIENCES, INC.

Logan A. Fowler, E.I. Eng. Reg. No. 1100015527 State of Florida

Michael K. Varner, P.E. Eng. Reg. No. 15037 State of Florida

Baskerville-Donovan, Inc. Lake Huntington

APPENDIX

Test Location Plan,

Boring Logs, &

Grain Size Distribution Curves

1

4

SP

SP

Water

Light Gray Fine SAND

Brown and Gray Fine SAND withTrace Organics

0.0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

-4.0

-4.5

-5.0

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

LL

N Value(blows/ft)

20 40 60 80

Page 1 of 1LOG OF BORING S-1 (South)Lake Huntington Sediment Sampling

Panama City, Florida

P16-0796

08/12/16

SPT Shelby Tube

Notes:- Sampled During Low Tide (+0.5)- Tidal Information Obtained from NOAA Online Publications

PROJECT:

LOCATION:

PROJECT NO.:

DATE:

METHOD:

DRILLER:

ENGR / GEOL:

SURFACE ELEVATION:

Hand Push

LF

LF

+0 ft

Per Plan

Water Level

NA

TU

RA

L M

OIS

TU

RE

(%)

PA

SS

ING

#20

0 S

IEV

E(%

)Soil SymbolsSampler Symbols

and Field Test Data

Water Observations: Sample Was Obtained Approximately1.0 Ft Below the Surface of the Water

Elevation /Depth

PL PI

ATTERBERGLIMITS (%)

LIQ

UID

LIM

IT

PLA

ST

IC L

IMIT

PLA

ST

ICIT

YIN

DE

X

MATERIAL DESCRIPTION

LOCATION

USCS

N - SPT Data (Blows/Ft) P - Pocket Penetrometer (tsf)

Sample Key:

PL LLMC

20 40 60 80Atterberg LimitsNatural Moisture

Measured: Perched:Est. Seasonal High GWL:

LOG

OF

BO

RIN

G

P16

-079

6.G

PJ

SE

S P

C F

L.G

DT

9/

19/1

6

Tested By: J.SHORES

Client

Project

Project No. Figure

SOUTHERNEARTH

SCIENCES, INC.

Location: S-1(South) Depth: 1.0-2.5' Sample Number: 1 9-13-16 9-14-16 9-16-16

BASKERVILLE DONOVAN

P16-0796

Identification Date Sampled Date Received Date Tested

PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.0010.010.1110100

% +3"Coarse

% Gravel

Fine Coarse Medium

% Sand

Fine Silt

% Fines

Clay

0.0 0.0 0.1 0.4 19.4 79.6 0.5

6 in. 3 in. 2 in.1½ in.

1 in.¾ in.

½ in.3/8 in.

#4 #10 #20 #30 #40 #60 #100#140

#200

U.S. SIEVE OPENING IN INCHES U.S. STANDARD SIEVE NUMBERS HYDROMETER

Particle Size Distribution Report

LAKE HUNINGTON SEDIMENT SAMPLING

SOUTHERN EARTH SCIENCES, INC.

GRAIN SIZE DISTRIBUTION TEST DATA 9/16/2016

Client: BASKERVILLE DONOVANProject: LAKE HUNINGTON SEDIMENT SAMPLINGProject Number: P16-0796 Location: S-1 (South)Depth: 1.0-2.5' Sample Number: 1Material Description: LIGHT GRAY FINE SANDDate Sampled: 9-13-16 Date Received: 9-14-16 Date Tested: 9-16-16Tested by: J.SHORES

Sieve Test Data

Post #200 Wash Test Weights (grams): Dry Sample and Tare = 396.40Tare Wt. = 0.00Minus #200 from wash = 0.5%

DrySample

and Tare(grams)

Tare(grams)

CumulativePan

Tare Weight(grams)

SieveOpening

Size

CumulativeWeight

Retained(grams)

PercentFiner

398.40 0.00 0.00 .75 0.00 100.0

.375 0.00 100.0

#4 0.38 99.9

#10 1.84 99.5

#20 7.59 98.1

#40 79.34 80.1

#60 261.25 34.4

#80 357.60 10.2

#100 382.27 4.0

#200 396.25 0.5

Fractional Components

Cobbles

0.0

Gravel

Coarse

0.0

Fine

0.1

Total

0.1

Sand

Coarse

0.4

Medium

19.4

Fine

79.6

Total

99.4

Fines

Silt Clay Total

0.5

D5

0.1559

D10

0.1791

D15

0.1958

D20

0.2104

D30

0.2379

D40

0.2657

D50

0.2956

D60

0.3294

D80

0.4244

D85

0.4634

D90

0.5203

D95

0.6277

FinenessModulus

1.52

Cu

1.84

Cc

0.96

Tested By: J.SHORES

Client

Project

Project No. Figure

SOUTHERNEARTH

SCIENCES, INC.

Location: S-1(South) Depth: 2.5-3.7' Sample Number: 2 9-13-16 9-14-16 8-16-16

BASKERVILLE DONOVAN

P16-0796


PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.0010.010.1110100

% +3"Coarse

% Gravel

Fine Coarse Medium

% Sand

Fine Silt

% Fines

Clay

0.0 0.0 0.0 0.1 10.1 86.3 3.5

6 in. 3 in. 2 in.1½ in.

1 in.¾ in.

½ in.3/8 in.

#4 #10 #20 #30 #40 #60 #100#140

#200






Client: BASKERVILLE DONOVANProject: LAKE HUNINGTON SEDIMENT SAMPLINGProject Number: P16-0796 Location: S-1 (South)Depth: 2.5-3.7' Sample Number: 2Material Description: BROWN / GRAY FINE WITH ORGANICSDate Sampled: 9-13-16 Date Received: 9-14-16 Date Tested: 8-16-16Tested by: J.SHORES

Sieve Test Data


DrySample

and Tare(grams)

Tare(grams)

CumulativePan

Tare Weight(grams)

SieveOpening

Size

CumulativeWeight

Retained(grams)

PercentFiner

350.90 0.00 0.00 .75 0.00 100.0

.375 0.00 100.0

#4 0.00 100.0

#10 0.22 99.9

#20 4.74 98.6

#40 35.86 89.8

#60 138.75 60.5

#80 241.82 31.1

#100 288.97 17.6

#200 338.62 3.5


Cobbles

0.0

Gravel

Coarse

0.0

Fine

0.0

Total

0.0

Sand

Coarse

0.1

Medium

10.1

Fine

86.3

Total

96.5

Fines

Silt Clay Total

3.5

D5

0.1031

D10

0.1277

D15

0.1431

D20

0.1557

D30

0.1777

D40

0.1990

D50

0.2219

D60

0.2486

D80

0.3353

D85

0.3730

D90

0.4280

D95

0.5305

FinenessModulus

1.13

Cu

1.95

Cc

0.99

1

1

SP

SP

Water

Light Gray Fine SAND

Gray and Dark Gray Fine SAND

0.0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

-4.0

-4.5

-5.0

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

LL

N Value(blows/ft)

20 40 60 80

Page 1 of 1LOG OF BORING N-1 (North)Lake Huntington Sediment Sampling

Panama City, Florida

P16-0796

08/12/16

SPT Shelby Tube

Notes:- Sampled During Low Tide (+0.5)- Tidal Information Obtained from NOAA Online Publications

PROJECT:

LOCATION:

PROJECT NO.:

DATE:

METHOD:

DRILLER:

ENGR / GEOL:

SURFACE ELEVATION:

Hand Push

LF

LF

+0 ft

Per Plan

Water Level

NA

TU

RA

L M

OIS

TU

RE

(%)

PA

SS

ING

#20

0 S

IEV

E(%

)Soil SymbolsSampler Symbols

and Field Test Data

Water Observations: Sample Was Obtained Approximately1.0 Ft Below the Surface of the Water

Elevation /Depth

PL PI

ATTERBERGLIMITS (%)

LIQ

UID

LIM

IT

PLA

ST

IC L

IMIT

PLA

ST

ICIT

YIN

DE

X

MATERIAL DESCRIPTION

LOCATION

USCS

N - SPT Data (Blows/Ft) P - Pocket Penetrometer (tsf)

Sample Key:

PL LLMC

20 40 60 80Atterberg LimitsNatural Moisture

Measured: Perched:Est. Seasonal High GWL:

LOG

OF

BO

RIN

G

P16

-079

6.G

PJ

SE

S P

C F

L.G

DT

9/

19/1

6

Tested By: J.SHORES

Client

Project

Project No. Figure

SOUTHERNEARTH

SCIENCES, INC.

Location: N-1(North) Depth: 1.0'-2.0' Sample Number: 3 9-13-16 9-14-16 9-16-16

BASKERVILLE DONOVAN

P16-0796


PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.0010.010.1110100

% +3"Coarse

% Gravel

Fine Coarse Medium

% Sand

Fine Silt

% Fines

Clay

0.0 0.0 0.0 0.0 7.1 92.4 0.5

6 in. 3 in. 2 in.1½ in.

1 in.¾ in.

½ in.3/8 in.

#4 #10 #20 #30 #40 #60 #100#140

#200






Client: BASKERVILLE DONOVANProject: LAKE HUNINGTON SEDIMENT SAMPLINGProject Number: P16-0796 Location: N-1 (North)Depth: 1.0-2.0' Sample Number: 3Material Description: LIGHT GRAY FINE SANDDate Sampled: 9-13-16 Date Received: 9-14-16 Date Tested: 9-16-16Tested by: J.SHORES

Sieve Test Data


DrySample

and Tare(grams)

Tare(grams)

CumulativePan

Tare Weight(grams)

SieveOpening

Size

CumulativeWeight

Retained(grams)

PercentFiner

335.40 0.00 0.00 .75 0.00 100.0

.375 0.00 100.0

#4 0.00 100.0

#10 0.00 100.0

#20 0.39 99.9

#40 23.78 92.9

#60 222.95 33.5

#80 320.36 4.5

#100 330.89 1.3

#200 333.64 0.5


Cobbles

0.0

Gravel

Coarse

0.0

Fine

0.0

Total

0.0

Sand

Coarse

0.0

Medium

7.1

Fine

92.4

Total

99.5

Fines

Silt Clay Total

0.5

D5

0.1822

D10

0.1980

D15

0.2104

D20

0.2216

D30

0.2427

D40

0.2636

D50

0.2854

D60

0.3091

D80

0.3672

D85

0.3862

D90

0.4089

D95

0.4961

FinenessModulus

1.45

Cu

1.56

Cc

0.96

Tested By: J.SHORES

Client

Project

Project No. Figure

SOUTHERNEARTH

SCIENCES, INC.

Location: N-1(North) Depth: 2.0-3.5' Sample Number: 4 9-13-16 9-14-16 9-16-16

BASKERVILLE DONOVAN

P16-0796


PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.0010.010.1110100

% +3"Coarse

% Gravel

Fine Coarse Medium

% Sand

Fine Silt

% Fines

Clay

0.0 0.0 0.0 0.0 7.6 91.8 0.6

6 in. 3 in. 2 in.1½ in.

1 in.¾ in.

½ in.3/8 in.

#4 #10 #20 #30 #40 #60 #100#140

#200






Client: BASKERVILLE DONOVANProject: LAKE HUNINGTON SEDIMENT SAMPLINGProject Number: P16-0796 Location: N-1 (North)Depth: 2.0-3.5' Sample Number: 4Material Description: BROWN / GRAY FINE SANDDate Sampled: 9-13-16 Date Received: 9-14-16 Date Tested: 9-16-16Tested by: J.SHORES

Sieve Test Data


DrySample

and Tare(grams)

Tare(grams)

CumulativePan

Tare Weight(grams)

SieveOpening

Size

CumulativeWeight

Retained(grams)

PercentFiner

375.80 0.00 0.00 .75 0.00 100.0

.375 0.00 100.0

#4 0.00 100.0

#10 0.00 100.0

#20 0.56 99.9

#40 28.53 92.4

#60 240.20 36.1

#80 357.43 4.9

#100 370.68 1.4

#200 373.71 0.6


Cobbles

0.0

Gravel

Coarse

0.0

Fine

0.0

Total

0.0

Sand

Coarse

0.0

Medium

7.6

Fine

91.8

Total

99.4

Fines

Silt Clay Total

0.6

D5

0.1804

D10

0.1954

D15

0.2071

D20

0.2176

D30

0.2377

D40

0.2581

D50

0.2799

D60

0.3040

D80

0.3651

D85

0.3855

D90

0.4104

D95

0.5100

FinenessModulus

1.43

Cu

1.56

Cc

0.95

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