GDR_Tampa_Hbr_OM_FY21_10March2021.pdf

SECTION 00 31 32

Geotechnical Data Report for

Tampa Harbor, Maintenance Dredging

34-Foot Project, Upper Channels

Hillsborough County, Florida

Prepared by

Geosystems Branch

Engineering Division

Jacksonville District Corps of Engineers

7 March 2021

GEOTECHNICAL DATA REPORT

Table of Contents

1 SCOPE

2 CHARACTER OF MATERIALS

2.1 The Regional and Local Geology

2.2 Materials Encountered

3 DEFINITIONS

3.1 Definitions of Basic Terms

3.2 Current Logging Terms

3.3 Previous Logging Terms

3.4 Testing and Procedure Methods

4 GEOTECHNICAL DATA

4.1 Summary of Field Investigations

4.2 Summary of Index Testing Data

4.3 Boring Log Notes

4.4 Inspection of Recovered Materials

4.5 Boring Logs

4.6 Laboratory Testing Data

List of Tables

Table 1. Available Surficial Sample Data Table 2: Index Testing Available for this Project

List of Plates

Plate 1. Vicinity Map Plate 2. Location of Field Investigations

Tampa Harbor O&M FY21 Dredging Upper Channels

Section 00 31 32-2

GEOTECHNICAL DATA REPORT

1 SCOPE

The information provided in this section encompasses the geotechnical field investigations available for this project. The investigations consist of surficial samples. The associated boring logs and laboratory data are presented in paragraphs 4.5 and 4.6, respectively. A character of materials paragraph is included to provide a comprehensive description of the materials utilizing both recent and historical knowledge of the project area. Also included in this section are definitions of terms and boring log notes, which provide additional explanation of the boring logs and drilling techniques.

Items discussed in the character of materials paragraph may not appear explicitly on the boring logs. Based on historic knowledge of the project area, the character of materials paragraph includes items that supplement the data documented by the boring logs. When reviewing the boring logs, use all of the data on the logs, including the materials description, legend, and blow counts. When evaluating the subsurface conditions, use all of the data, including the character of materials paragraph and boring logs.

During the solicitation period, any questions that pertain to the information provided in this section should be addressed to the contract specialist identified in Block 9 of SF1442. After contract award, questions should be addressed to the appointed ACO/COR, which will coordinate with Geotechnical Branch.

2 CHARACTER OF MATERIALS

2.1 THE REGIONAL AND LOCAL GEOLOGY

Much of Florida's surface is covered by a series of interbedded limestone, dolostone, sand and clay units ranging from the Eocene to Holocene Epoch.

The local geology of Hillsborough Bay consists of an uppermost layer of undifferentiated Quaternary Period sediments - comprised of siliciclastics, organic sediments and freshwater carbonates. Those sediments range in thickness from approximately 30 to 80 feet and are underlain by the 50 ft. to 330 ft. thick, Oligocene/Pliocene deposits of the Hawthorn Group consisting of phosphatic siliciclastics (sand, silt and clay) and carbonates. Underneath the Hawthorn group are limestones and dolostones of the Ocala Limestone and Eocene Avon Park Formation present.

2.2 MATERIALS ENCOUNTERED

Tampa Harbor has historically been dredged for maintenance multiple times. The last time the Upper & Lower Sparkman Channels, the Ybor Channel, and East Bay Channel Extension were dredged was in 2017/2018.

The materials to be dredged are described on logs and gradation curves from surficial samples collected in 2012 and 2017. The materials presented on the logs and sediment gradation curves have been removed with subsequent shoaling of similar materials.

The material to be dredged is composed of supersaturated silt, silt with trace to some sand, fine to coarse-grained quartz sand, and silty sand with various amounts of sand to gravel-sized shell and limestone fragments. Trash and debris, such as ropes, anchors, aluminum cans, and plastic bottles from navigation activities are present in the materials to be dredged. At the Ybor and

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-3

Upper Sparkman Channel shoal materials are littered with additional shipyard type debris such as wire rope, metal beams/debris, etc. due to the dry dock activities. There is also sandblasting grit mixed within the shoal materials near the dry dock at Ybor channel. This grit behaves differently from the typical shoaling material when pumped and can cause abrasion to the equipment.

The project site vicinity is depicted on Plate 1 and sampling locations are presented on Plate 2 and listed in Table 1. Laboratory data for the project area is summarized in Table 2.

3 DEFINITIONS

Definitions not explicitly indicated in the sections below are typical industry standard definitions from their respective ASTMs.

3.1 DEFINITIONS OF BASIC TERMS

Carbonate – Soil component that reacts with HCl of an indeterminate origin (shell, rock, etc.).

Fill – Material that has been placed by man, described with all soil characteristics.

Layer – Rock or soil with a thickness of 6 inches or less.

Lens – A geologic deposit of variable thickness, which disappears laterally in all directions and cannot be correlated to adjacent borings.

Rock – A naturally occurring substance composed of one or more minerals bound together. This geologic term includes a range of engineering properties: strength, hardness, permeability, weathering, and discontinuity. These properties are noted or can be inferred from the boring logs as blow counts, penetration rate, RQD, hardness, etc.

Shell – Material composed of predominantly (>75%) coarse-grained sand to gravel-sized whole or broken shell.

3.2 CURRENT LOGGING TERMS

Definition of terms used on boring logs dated since 2000:

Banded - 0.02 ft. (6 mm) to 0.1 ft. (3.0 cm).

Boulder-Sized – Particles greater than 12 inches in diameter.

Cavity - Voids greater than the diameter of the core.

Coarse Grained - Grain diameter greater than 0.079" (2 mm) for sedimentary rocks or 0.197" (5

mm) for igneous or metamorphic rocks.

Coarse Grained Sand-Sized – Less than 10 percent of fine and medium grained sand sizes are present.

Coarse Gravel-Sized – Particles greater than 3/4 of an inch but less than 3 inches in diameter.

Cobble-Sized – Particles greater than 3 inches but less than 12 inches in diameter.

Decomposed – Applicable to saprolitic rock; rock is essentially reduced to a soil with a relic rock texture; can be molded or crumbled by hand.

Dipping (Dip) - 20 to 45 degrees.

Discontinue – Particles were present within the unit above but are no longer present.

Fine Grained - Grain diameter between 0.004" (0.1 mm) and 0.016" (0.4 mm) for sedimentary rocks or 0.039" (1 mm) for igneous or metamorphic rocks.

Fine Grained Sand-Sized - Less than 10 percent of medium and coarse grained sand sizes are present.

Fine Gravel-Sized – Particles greater than No. 4 sieve but less than 3/4 of an inch in diameter.

Flat (Dip) - 0 to 20 degrees.

Fossiliferous – Greater than 40 percent fossils.

Hard (Hardness) - Difficult to scratch with a knife (cannot be pitted with a geology hammer, but can be chipped with moderate blows of the hammer).

Highly Fractured - Spacing 0.3 ft. (9.1 cm) to 1 ft. (30.5 cm).

Highly Weathered - Entire section is discolored; alteration is greater than 50%; some areas of slightly weathered rock are present; some minerals are leached away; retains only a fraction of its original strength (wet strength usually lower than dry strength).

Intact – Spacing greater than 6 ft. (1.8 m).

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-4

Intensely Fractured - Spacing less than 0.3 ft. (9.1 cm).

Massive – Over 3 ft. (0.9 m) thick.

Medium-Bedded - 0.3 ft. (9.1 cm) to 1 ft. (30.5 cm) thick.

Medium Grained - Grain diameters between 0.016" (0.4 mm) to 0.079" (2 mm) for sedimentary rocks or 0.039" (1 mm) to 0.197" (5 mm) for igneous or metamorphic rocks.

Medium Grained Sand-Sized - Less than 10 percent of fine and coarse grained sand sizes are present.

Moderately Fractured - Spacing 1 ft. (30.5 cm) to 3 ft. (0.9 m).

Moderately Hard (Hardness) - Can be scratched easily with a knife, but cannot be scratched by a fingernail (can be pitted with moderate blows of a geology hammer).

Moderately Open (Fracture Aperture) - 0.020" (0.5 mm) to 0.098" (2.5 mm).

Moderately Weathered - Discoloration is evident; surface is pitted and altered, with alterations penetrating well below rock surfaces; 10% to 50% of the rock is altered; strength is noticeably less than unweathered rock.

Non-fossiliferous – No observed fossils.

Open (Fracture Aperture) - 0.098" (2.5 mm) to 0.394" (10 mm).

Pitted - Voids 0.039" (1mm) to 0.236" (6mm) in diameter.

Porous - Voids less than 0.039" (1mm) in diameter.

Slightly Fractured - Spacing 3 ft. (0.9 m) to 6 ft. (1.8 m).

Slightly Weathered - Superficial discoloration, alteration and/or discoloration along discontinuities;

less than 10% of the rock volume is altered; strength is essentially unaffected.

Soft (Hardness) - Can be scratched with a fingernail (cannot be crumbled between fingers, but can be easily pitted with light blows of a geology hammer).

Solid - Absence of voids.

Sparsely Fossiliferous – Less than 40 percent fossils.

Steeply Dipping (Dip) - 45 to 90 degrees.

Thick-Bedded – 1 ft. (30.5 cm) to 3 ft. (0.9 m) thick.

Thin-Bedded - 0.1 ft. (3.0 cm) to 0.3 ft. (9.1 cm) thick.

Thin Parting - Paper thin to 0.002 ft. (0.6 mm).

Tight (Fracture Aperture) - 0.004" (0.1 mm) to 0.020" (0.5 mm).

Unweathered - No evidence of any mechanical or chemical alteration.

Very Fine Grained - Grain diameter less than 0.004" (0.1 mm); individual grains or crystals are too small to be seen with the naked eye.

Very Hard (Hardness) - Cannot be scratched with a knife (chips can be broken off only with heavy blows of a geology hammer).

Very Soft (Hardness) - Can be deformed by hand (has a rock-like character, but can be easily broken by hand).

Very Tight (Fracture Aperture) - less than 0.004" (0.1 mm).

Very Wide (Fracture Aperture) - 0.394" (10 mm) to 0.984" (25 mm).

Vuggy - Voids 0.236" (6mm) to the diameter of the core.

3.3 PREVIOUS LOGGING TERMS

Definition of terms used on boring logs dated before 2000:

Dense – Equivalent to SPT N-value of 30 to 50.

Incompetent – Rock that disintegrates while coring; weak.

Indurated – Rock or soil hardened or consolidated by pressure or cementation. Very difficult to break by hand.

Poorly-Indurated – See semi-indurated.

Seam – Rock or soil with average thickness of 2 to 3 inches.

Semi-Indurated – Rock or soil with a lesser degree of hardening or consolidation by pressure or cementation. Crumbles with little effort by hand.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-5

3.4 TESTING AND PROCEDURE METHODS

Test/Procedure Method Abrasion Resistance of Large-Size Coarse Aggregate, Los Angeles Machine

ASTM C535

Abrasion Resistance of Small-Size Coarse Aggregate, Los Angeles Machine

ASTM C131

Air Content by the Pressure Method ASTM C231 Air Content by the Volumetric Method ASTM C173 Air-Entraining Admixtures for Concrete ASTM C233 Atterberg Limits, wet preparation method, test method a multipoint ASTM D4318 Bulk Specific Gravity of Bituminous Mixtures ASTM D2726 Capping Cylindrical Concrete Specimens ASTM C617 Carbonate Content ASTM D4373 Compaction: 4" Mold, Modified Proctor ASTM D1557 Compaction: 4" Mold, Standard Proctor ASTM D698 Compaction: 6" Mold, Modified Proctor ASTM D1557 Compaction: 6" Mold, Standard Proctor ASTM D698 Compressive Strength of Cast in Place Concrete Cylinders ASTM C873 Compressive Strength of Cylindrical Concrete Specimens (Set of 4) ASTM C39 Compressive Strength of Lightweight Concrete ASTM C495 Consolidation, each load of rebound increment with complete time ASTM D2435

Density and Water Content of Soil by Nuclear Methods (Minimum 4)

ASTM

D2922/D3017

Density of Bituminous Concrete in Place by Nuclear Methods (Minimum 4)

ASTM D2950

Density of Soil in Place by the Sand-Cone Method ASTM D1556 Direct Shear ASTM D3080 Drilled Cores and Sawed Beams of Concrete ASTM C42 Extraction of Bituminous Paving Mixtures ASTM D2172 Freezing and Thawing (up to 55 cycles) ASTM D5312 Grain size sieve Analysis ASTM D6913 Hydrometer Analysis ASTM D7928 Making and Curing Concrete Test Specimens in the Field (Set of 6) ASTM C31 Making and Curing Concrete Test Specimens in the Lab (Set of 4) ASTM C192 Marshall Resistance to Plastic Flow (Set of 3) ASTM D1559 Material Passing No. 200 Sieve ASTM D1140 Modulus of Elasticity ASTM D3148 Moisture Content ASTM D2216

Munsell Color Munsell Soil Color Charts

Organic Content, Test Method C ASTM D2974 Organic Impurities in Fine Aggregate ASTM C40 Permeability: Constant Head Permeability ASTM D2434 Permeability: Falling Head Permeability ASTM D5084 Petrographic Examination ASTM C295 Sampling Aggregate (Minimum 4 hours) ASTM D75 Sampling Freshly Mixed Concrete ASTM C172 Sedimentation Rate No ASTM

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-6

Test/Procedure Method Sieve Analysis of Aggregate ASTM C136 Slump of Hydraulic-Cement Concrete ASTM C143 Soil Classification (Boring logs) ASTM D 2488 Specific Gravity and Absorption of Fine Aggregate ASTM C128 Specific Gravity for Rock ASTM C127 Specific Gravity for Soil ASTM D854

SPLITTING TENSILE STRENGTH ASTM D3967

Splitting Tensile Strength of Concrete Cylinders ASTM C496 Subsample Preparation ASTM D4220, Group B ASTM D4220, Sulfate Soundness ASTM C88 Total Evaporable Moisture Content ASTM C566 Triaxial Compression Test for Rock with Strain Gages or LVDTs (per confining pressure)

ASTM D2664

Triaxial compression: Consolidated Undrained (CU) Triaxial Compression Test R Test with Pore Pressure Measurements (per confining pressure)

ASTM D4767

Triaxial compression: Unconsolidated Undrained (UU) Triaxial Compression Test Q Test with Pore Pressure Measurements (per confining pressure)

ASTM D2850

Unbonded Caps for Compressive Strength ASTM C1231 Unconfined Compressive Strength for Rock Greater than 9,000 psi with Strain

ASTM D2938

Unconfined Compressive Strength for Rock up to 9,000 psi with Strain

ASTM D2938

Unconfined Compressive Strength for Soil ASTM D2166 Unit Weight and Absorption ASTM C127 Unit Weight of Aggregate ASTM C29 - Visual Percent Shell No ASTM Wetting and Drying ASTM D5313

4 GEOTECHNICAL DATA

4.1 SUMMARY OF FIELD INVESTIGATIONS

The table below summarizes the field investigations data set available for this project.

Table 1. Available Surficial Sample Data

Sample Designation

State Plane, FL-West, NAD83 Project Location

X Y

GS-THbr17-06 513386 1315627 Ybor Channel

GS-THbr17-08 517200 1307694 East Bay Channel Extension

GS-HBY12-1 513328 1312439

Ybor Channel

GS-HBY12-2 513097 1314543

GS-HBY12-3 513090 1314943

GS-HBY12-4 513422 1315732

GS-TBS12-1 511863 1305086

Lower Sparkman Channel

GS-TBS12-2 511374 1305045

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-7

Sample Designation

State Plane, FL-West, NAD83 Project Location

X Y

GS-TBS12-3 511456 1306052

Lower Sparkman Channel

GS-TBS12-4 511843 1306413

GS-HBEB12-5 517559 1307066

East Bay Channel Extension GS-HBEB12-6 516954 1307899

GS-HBEB12-7 516456 1308399

All coordinates presented correspond to the project coordinate system and datum

4.2 SUMMARY OF INDEX TESTING DATA

The table below summarizes the index testing available for this project.

Table 2: Index Testing Available for this Project

Designation Sample # USCS LL PL PI GS Munsell Color

GS-THbr17-06 1 MH 10Y 2.5/1

GS-THbr17-08 1 MH 10Y 3/1

GS-HBY12-1 1 MH 2.65 10YR 3/2

GS-HBY12-3 1 SM 2.64 10YR 3/1

GS-HBY12-4 1 MH 69 41 28 2.6 10YR 3/1

GS-TBS12-2 1 MH 2.56 10YR 3/1

GS-TBS12-4 1 MH 2.59 10YR 3/1

USCS: Unified Soil Classification System; LL: liquid limit; PL: plastic limit; PI: Plastic Index; Gs: specific gravity

4.3 BORING LOG NOTES

All Surficial Samples were collected with an AMS 6”x6”x6” clam shell sampler which weighs approximately 25 pounds. The sampler was tied to nylon rope and mounted on a shipboard winch with pulley. During sampling, the clam shell was allowed to free-fall from the winch at the target location.

4.4 INSPECTION OF RECOVERED MATERIALS

The sample material has been discarded and is not available for inspection by prospective offerors.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-8

CUT-A(HB)

CU

T-C

(H B)

CUT-A(HB)

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

BUN

BUN

24Feb2021

Dsn by:

MAINTENANCE DREDGING 2021

Hillsborough County Tampa Harbor

Legend Channel OutlineÜ

0 12,500 25,0006,250 Feet

Overview Map

PLATE 2

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-9

Lo we r S pa rkm an n Up pe r S pa rkm an n

Yb or

Ch an ne l

Est Bay Channel Extension

GS-TBS12-4

GS-TBS12-3

GS-TBS12-2

GS-TBS12-1

GS-HBY12-4

GS-HBY12-3

GS-HBY12-2

GS-HBY12-1

GS-HBEB12-7

GS-HBEB12-6

GS-HBEB12-5

GS-THbr17-08

GS-THbr17-06

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

2JC

BUN

BUN

24Feb2021

Dsn by:

MAINTENANCE DREDGING 2021

Hillsborough County Tampa Harbor

Legend ? Surficial Samples

Channel OutlineÜ

0 2,500 5,0001,250 Feet

Sample Location Map

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-10

4.5 BORING LOGS

Applicable boring logs are presented on the following pages.

The borings presented in this section are available historic borings within the project area. Most of the materials within the project template presented on the boring logs have been removed by previous dredging events with subsequent shoaling of similar materials. The current elevations of the materials at these locations are shown on the contract drawings.

While the Government’s borings are representative of subsurface conditions at their respective locations and vertical reaches, local variations in the characteristics of the subsurface materials of this region are to be expected.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-11

-25.1

-25.6 Clam Shell1100SILT, inorganic-L, some sand, 5Y 6/1 gray

(ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.0/0.5 MH*

*Lab visual classification based on gradation curve

SAMPLE LABORATORY

DEPTH SOIL TESTING RESULT UNIT

0.5 Specific Gravity 2.65

-25.1-25.1

-25.6 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBY12-1

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBY12-1

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 513,328 Y = 1,312,439

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Ybor Channel

02-15-12

-25.1 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-12

-32.2

-32.7 Clam Shell1100SILT, inorganic-L, trace sand, 5Y 2.5/1 black

(ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-32.2-32.2

-32.7 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBY12-2

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBY12-2

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 513,097 Y = 1,314,543

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Ybor Channel

02-15-12

-32.2 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-13

-32.6

-33.1 Clam Shell1100SAND, silty, trace quartz, 5Y 2.5/1 black (SM)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.0/0.5 SM*

*Lab visual classification based on gradation curve

SAMPLE LABORATORY

DEPTH SOIL TESTING RESULT UNIT

0.5 Specific Gravity 2.64

-32.6-32.6

-33.1 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBY12-3

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBY12-3

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 513,090 Y = 1,314,943

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Ybor Channel

02-15-12

-32.6 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-14

-30.7

-31.2 Clam Shell1100SILT, inorganic-L, 5Y 2.5/1 black (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.0/0.5 MH

not on atterberg limits.

SAMPLE LABORATORY

DEPTH SOIL TESTING RESULT UNIT

0.5 Atterberg (PI) 28

0.5 Specific Gravity 2.60

-30.7-30.7

-31.2 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBY12-4

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBY12-4

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 513,422 Y = 1,315,732

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Ybor Channel

02-15-12

-30.7 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-15

-31.5

-32.0 Clam Shell1100SILT, inorganic-L, 5Y 4/1 dark gray (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-31.5-31.5

-32.0 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-TBS12-1

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-TBS12-1

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 511,863 Y = 1,305,086

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Lower Sparkman Channel

02-15-12

-31.5 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-16

-32.2

-32.71SILT, inorganic-L, 5Y 4/1 dark gray (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.0/0.5 MH*

*Lab visual classification based on gradation curve

SAMPLE LABORATORY

DEPTH SOIL TESTING RESULT UNIT

0.5 Specific Gravity 2.56

Abbreviations:

-32.2-32.2

-32.7 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-TBS12-2

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-TBS12-2

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 511,374 Y = 1,305,045

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Lower Sparkman Channel

02-15-12

-32.2 Ft.

N/A

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-17

-30.0

-30.5 Clam Shell1100SILT, inorganic-L, 5Y 4/1 dark gray (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-30.0-30.0

-30.5 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-TBS12-3

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-TBS12-3

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 511,456 Y = 1,306,052

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Lower Sparkman Channel

02-15-12

-30.0 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-18

-32.0

-32.5 Clam Shell1100SILT, inorganic-L, 5Y 4/1 dark gray (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.0/0.5 MH*

*Lab visual classification based on gradation curve

SAMPLE LABORATORY

DEPTH SOIL TESTING RESULT UNIT

0.5 Specific Gravity 2.59

-32.0-32.0

-32.5 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-TBS12-4

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-TBS12-4

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 511,843 Y = 1,306,413

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

Lower Sparkman Channel

02-15-12

-32.0 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-19

-31.7

-32.2 Clam Shell1100SILT, inorganic-L, 5GY 2.5/1 greenish black

(ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-31.7-31.7

-32.2 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBEB12-5

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBEB12-5

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 517,559 Y = 1,307,066

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

East Bay Channel 2

02-15-12

-31.7 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-20

-31.0

-31.5 Clam Shell1100SILT, inorganic-L, 5Y 2.5/1 black (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-31.0-31.0

-31.5 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBEB12-6

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBEB12-6

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 516,954 Y = 1,307,899

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

East Bay Channel 2

02-15-12

-31.0 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-21

-32.4

-32.9 Clam Shell1100SILT, inorganic-L, 5Y 4/1 dark gray (ML)

NOTES:

1. USACE Jacksonville is the custodian for these original files.

2. Soils are field visually classified in accordance with the Unified Soils Classification System.

-32.4-32.4

-32.9 0.5

0.00.0

RQD

OR

UD

CLASSIFICATION OF MATERIALS %

REC.

L E

G E

N D

B O

X O

R S

A M

P L

E

REMARKS

N -V

A L

U E

B L

O W

S

F

T

DEPTH

(ft)

ELEV.

(ft)

INCLINED

DIVISION INSTALLATION

VERTICAL

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

2. BORING DESIGNATION

STARTED

3. DRILLING AGENCY

13. TOTAL NUMBER CORE BOXES

Boring Designation

17. TOTAL RECOVERY FOR BORING

10. COORDINATE SYSTEM/DATUM

MANUAL HAMMER

DRILLING LOG

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

VERTICAL

OF

GS-HBEB12-7

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

GS-HBEB12-7

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

State Plane, FLW (U.S. Ft.)

X = 516,456 Y = 1,308,399

MLLW

N/A

N/A

Corps of Engineers - CESAJ

0.5 Ft.

Jacksonville District

02-15-12

South Atlantic

N/A

Mark Whitson

Tampa O&M

East Bay Channel 2

02-15-12

-32.4 Ft.

100 %

Alan Fong, Geologist

SAJ FORM 1836

JUN 02

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-22

4.6 LABORATORY TESTING DATA

Applicable laboratory testing data are presented on the following pages.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-23

0.0010.010.1110100

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/6/2017DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa Harbor 2017 Surface Samples

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, inorganic-H, little fine-grained sand-sized quartz, trace organic matter, greenish black (MH)

10Y 2.5/1

GS-THBR17-06

Not Determined to 0.5 Ft.

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-24

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/6/2017DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa Harbor 2017 Surface Samples

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, inorganic-H, few fine-grained sand-sized quartz, very dark greenish gray (MH)

10Y 3/1

GS-THBR17-08

Not Determined

0.0 to 0.0 Ft.

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-25

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/7/2012DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa O&M

Ybor Channel

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, in-organic-H, mostly silt, some fine-grained sand-sized quartz, moist, very dark grayish brown (MH)

10YR 3/2

GS-HBY12-1

-25.1 Ft., MLLW

0.0 to 0.5 Ft. 2.65

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-26

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/7/2012DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa O&M

Ybor Channel

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SAND, silty, mostly subrounded fine-grained sand-sized quartz, some silt, wet, very dark gray (SM)

10YR 3/1

GS-HBY12-3

-32.6 Ft., MLLW

0.0 to 0.5 Ft. 2.64

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-27

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/7/2012DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa O&M

Ybor Channel

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, in-organic-H, mostly silt, some fine-grained sand-sized quartz, wet, very dark gray (MH)

10YR 3/1

GS-HBY12-4

-30.7 Ft., MLLW

0.0 to 0.5 Ft. 2.60 69 41 28

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-28

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/7/2012DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa O&M

Lower Sparkman Channel

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, in-organic-H, mostly silt, few fine-grained sand-sized quartz, wet, very dark gray (MH)

10YR 3/1

GS-TBS12-2

-32.2 Ft., MLLW

0.0 to 0.5 Ft. 2.56

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-29

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

3/7/2012DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est) Tampa O&M

Lower Sparkman Channel

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

Sample No. Depth Classification Munsell %CO 3 LL PL PI

1 SILT, in-organic-H, mostly silt, few fine-grained sand-sized quartz, wet, very dark gray (MH)

10YR 3/1

GS-TBS12-4

-32.0 Ft., MLLW

0.0 to 0.5 Ft. 2.59

BORING NO.

Tampa Harbor O&M FY21 Dredging

Section 00 31 32-30