Tampa_OM_GDR2018-Cut1_2_Mullet-11July2025.pdf

SECTION 00 31 32

Geotechnical Data Report for

Tampa Harbor Maintenance Dredging

Egmont Channel Cuts 1 & 2, and Mullet Key Channel

Hillsborough County, Florida

Prepared by

Geosystems Branch

Engineering Division

Jacksonville District Corps of Engineers

13 July 2025

GEOTECHNICAL DATA REPORT

Table of Contents

1 SCOPE

2 CHARACTER OF MATERIALS

2.1 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 Vibracore Data Table 2. Available Surficial Sample Data Table 3: Index Testing Available for this Project

List of Plates

Plate 1. Vicinity Map Plate 2. Location of Field Investigations Plate 3. Location of Field Investigations

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel Hillsborough County, Florida

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GEOTECHNICAL DATA REPORT

1 SCOPE

The information provided in this section encompasses the geotechnical field investigations available for this project. The investigations consist of borings. The associated boring logs and laboratory data are presented in paragraphs 4.5 and 4.6. 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 Geosystems Branch.

2 CHARACTER OF MATERIALS

2.1 REGIONAL AND LOCAL GEOLOGY

Tampa Harbor lies in the flat Gulf Coast Lowlands Province, which generally includes the area from the shoreline to the 100-foot contour line and is formed by recent marine deposits. The geology consists of surficial Quaternary beach ridge and dune sediments overlaying a complex series of interbedded limestone, sand and clay units. The units range from Oligocene to Holocene age.

Along the coast, four Pleistocene/Pliocene age, marine terraces overlie the Oligocene/Miocene age Hawthorn Group. The marine terraces consist primarily of quartz sand and shell and range from approximately 30 to 80 feet in thickness. The Hawthorn Group deposits, ranging from less than 10 feet thick in northern Pinellas and Hillsborough Counties to more than 250 feet thick in the project area, are composed of sandy clays, silt, sand, and carbonate rock units. The limestones and dolostones of the Tampa Member of the Arcadia Formation form the base of the Hawthorn Group in the area.

2.2 MATERIALS ENCOUNTERED

Tampa Harbor has been dredged for maintenance historically multiple times. The last time the Egmont Channel Cuts-1 & 2, and Mullet Cut were dredged was in 2022/23.

Vibracores were collected in January 2018, and surficial samples in 2013 to characterize the shoaling material within the channel. However, this material was removed during prior maintenance dredging events. Nevertheless, the boring logs can be used to characterize the material to be dredged since similar material is anticipated to have shoaled in since.

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The materials to be dredged consist of fine-grained quartz sand with various amounts of silt and sand to gravel-sized shell fragments and whole shells. Silt, with some to few fine-grained quartz sand, is also present.

This is an active navigation channel. Trash and debris, such as ropes, anchors, aluminum cans, plastic bottles, etc. from navigation activities are present in the materials to be dredged.

The boring and sample locations are depicted in Plates 2 & 3 and listed in Tables 1 and 2.

Laboratory testing results are summarized in Table 3. Boring logs, penetration reports, and laboratory testing data sheets are included in paragraphs 4.5 and 4.6, respectively.

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).

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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).

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.

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

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

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Test/Procedure Method Sampling Aggregate (Minimum 4 hours) ASTM D75 Sampling Freshly Mixed Concrete ASTM C172 Sedimentation Rate No ASTM 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 D7012

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

ASTM D7012

Unconfined Compressive Strength for Soil ASTM D7012 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 tables below summarize the field investigations data set available for this project.

Table 1. Available Vibracore Data

Designation State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

VB-THM18-01 378207 1190096

Egmont Cut 1

VB-THM18-02 379722 1190253

VB-THM18-03 381085 1190418

VB-THM18-04 382401 1190517

VB-THM18-05 383800 1190670

VB-THM18-06 385054 1190814

VB-THM18-07 386686 1190968

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

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Designation State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

VB-THM18-08 387824 1190508

VB-THM18-09 388602 1191159

VB-THM18-10 389965 1191320

VB-THM18-11 417422 1189161 Mullet Key

Channel

VB-THM18-12 420010 1189563

* Coordinates presented correspond to the project coordinate system and datum

Table 2. Available Surficial Sample Data

Designation State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

GS-E13-4 376503 1189919

GS-E13-5 377506 1190028

GS-E13-6 378285 1189463

GS-E13-7 379407 1190226

GS-E13-8 379825 1189624

GS-E13-14 384529 1190132

GS-E13-16 385552 1190240

GS-E13-24 391402 1191494

* 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 3: Index Testing Available for this Project

Boring Designation

Sample Designation

USCS LL PL PI

Visual Shell

Munsell Color

VB-THM18-01 1 SP 9.8 2.5Y 6/1

VB-THM18-01 2 SM 0.6 2.5Y 6/1

VB-THM18-01 3 SP-SM 5 2.5Y 6/1

VB-THM18-01 4 SM 0.1 2.5Y 6/1

VB-THM18-02 1 SP 19.3 2.5Y 6/1

VB-THM18-02 2 SP 19.4 2.5Y 6/1

VB-THM18-02 3 MH 3.6 2.5Y 4/1

VB-THM18-02 4 SM 15.7 2.5Y 4/1

VB-THM18-03 1 SP 6.2 2.5Y 7/1

VB-THM18-03 2 SP-SM 6.2 2.5Y 6/1

VB-THM18-03 3 SP-SM 2.4 2.5Y 7/1

VB-THM18-03 4 SP-SM 9.7 2.5Y 6/1

VB-THM18-03 5 SP 3.8 2.5Y 7/1

VB-THM18-03 6 MH 0.7 2.5Y 6/1

VB-THM18-03 7 SM 3.2 2.5Y 6/1

VB-THM18-04 1 SM 7.8 2.5Y 6/1

VB-THM18-04 2 SP 3.8 2.5Y 6/1

VB-THM18-04 3 MH 0.5 2.5Y 6/1

VB-THM18-04 4 SP 0.1 2.5Y 7/1

VB-THM18-05 1 SP 4.3 2.5Y 6/1

VB-THM18-05 2 SM 1.2 2.5Y 5/1

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Boring Designation

Sample Designation

USCS LL PL PI

Visual Shell

Munsell Color

VB-THM18-05 3 SM 0.6 2.5Y 5/1

VB-THM18-05 4 SP-SM 0.5 2.5Y 6/1

VB-THM18-06 1 SM 1.6 2.5Y 6/1

VB-THM18-06 2 SP 1.6 2.5Y 6/1

VB-THM18-06 3 MH 0 2.5Y 6/1

VB-THM18-06 4 SM 0.1 2.5Y 6/1

VB-THM18-07 1 SP-SM 6.1 2.5Y 6/1

VB-THM18-07 2 SM 1 2.5Y 6/1

VB-THM18-07 3 MH 0 2.5Y 6/1

VB-THM18-08 1 SM 0.1 2.5Y 6/1

VB-THM18-08 2 MH 0 2.5Y 6/1

VB-THM18-08 3 SM 0.1 2.5Y 6/1

VB-THM18-09 1 SP-SM 0.1 2.5Y 7/1

VB-THM18-09 2 MH 0 2.5Y 6/1

VB-THM18-09 3 SP-SM 0.1 2.5Y 6/1

VB-THM18-10 1 SP-SM 1.2 2.5Y 4/1

VB-THM18-10 2 SP 1.4 2.5Y 4/1

VB-THM18-10 3 SM 0.8 2.5Y 3/1

VB-THM18-10 4 SM 0.2 2.5Y 3/1

VB-THM18-10 5 SM 1 2.5Y 3/1

VB-THM18-11 1 SP 96.6 2.5Y 7/2

VB-THM18-11 2 SP 91.8 2.5Y 7/2

VB-THM18-11 3 SP 92.9 2.5Y 7/2

VB-THM18-11 4 SP 71.2 2.5Y 7/2

VB-THM18-11 5 SP 80.6 2.5Y 7/2

VB-THM18-11 6 SP 74.8 2.5Y 6/1

VB-THM18-12 1 SP 96.7 2.5Y 5/2

VB-THM18-12 2 SP 96.8 2.5Y 5/2

VB-THM18-12 3 SP 98 2.5Y 5/2

GS-E13-5 1 MH -- -- -- -- N5

GS-E13-7 1 SM -- -- -- 6 N5

GS-E13-16 1 SM -- -- -- -- N5

GS-E13-24 1 SM 0 0 NP -- N5

USCS: Unified Soil Classification System; LL: Liquid Limit; PL: Plastic Limit; PI: Plastic Index

4.3 BORING LOG NOTES

All vibracore borings were sampled using an electrical vibracoring machine that was housed on a 35-foot vessel. A generator with an electrical vibrator was attached directly to a three-inch diameter galvanized sample barrel and lowered to the sea floor through a moonpool in the deck of the sampling platform by attaching lengths of drill stem. The sample barrel was allowed to penetrate the sea floor until it reached the target depth or until refusal was encountered. Refusal is defined as no additional penetration of the vibracore with two minutes of additional effort applied to penetrate through the resistant layer at maximum vibration.

All Surface 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.

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4.4 INSPECTION OF RECOVERED MATERIALS

The material recovered from borings marked with a checkmark in Table 1 is available for inspection by prospective offerors at the Corps of Engineers District warehouse in Jacksonville, Florida.

Address: 3077 Talleyrand Avenue Jacksonville, 32206 Florida Hours: 7:00 am to 2:30 pm

The recovered materials will be available for inspection during normal business hours as noted above, except Federal holidays, during the entire bid period. Prospective offerors shall notify the Chief, Geology and Explorations Section at DLL-CESAJ-BoringRequest@usace.army.mil at least four (4) working days before the visit. The notification should include the project name and a list of the borings requested for inspection.

The following information will be required to schedule the visit:

(1) Project title;

(2) Specific borings or entire set which are to be viewed;

(3) Date, time, and duration of the visit;

(4) Name of the person(s) and company to view the borings; and

(5) Point of contact and phone number regarding the visit.

Prospective offerors shall record their material examination visit in a record book maintained at the inspection site.

It is strongly suggested that prospective offerors view the samples before submitting their bid.

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CUT-A(HB)

CU

T-C

(H B)

CUT-D(HB)

PLATE 3PLATE 2

PLATE

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

1BUN

BUN

BUN

19 MAY 2025

Dsn by:

Ü

0 6 123 Miles

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and

Mullet Key Channel

Hillsborough County, Florida

OVERVIEW MAP

Project Area

Pinellas County

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SECTION 00 31 32-11

O O O O O O O O

O O

VB

-TH

M1 8-0

GS

-E1

3-8

GS

-E1 3-7

GS

-E1

3-6

GS

-E1 3-5

GS

-E1

3-4 GS

-E1

3-2

GS

-E1

3-1

GS

-E1

3-1

VB

-TH

M1 8-1

VB

-TH

M1 8-0

VB

-TH

M1 8-0

VB

-TH

M1

8-0

VB

-TH

M1 8-0

VB

-TH

M1 8-0

VB

-TH

M1 8-0

VB

-TH

M1 8-0

VB

-TH

M1 8-0

Legend ? Surficial Sample Location O Vibracore Locations

Channel Outline

0 1 20.5 Miles

PLATE NO.

Tampa Harbor Maintenance Dredging

Egmont Channel Cuts 1 & 2, and Mullet Key

Channel

Hillsborough County, Florida

GEOTECHNICAL

DRAWINGS

NOT FOR

CONSTRUCTION

VIBRACORE LOCATION

MAP

Dwn by:

Ckd by:

Dated:

BUNBUN

BUN 19 MAY 2025

Dsn by:

EGMONTCUT 1

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V B

-T H

M

-1

V B

-T H

M

-1

Legend ? Surficial Sample Location

O Vibracore Locations

Channel Outline

0 1 20.5 Miles

PLATE NO.

GEOTECHNICAL

DRAWINGS

NOT FOR

CONSTRUCTION

VIBRACORE LOCATION

MAP

Dwn by:

Ckd by:

Dated:

BUNBUN

BUN 15 MAY 2025

Dsn by:

Tampa Harbor Maintenance Dredging

Egmont Channel Cuts 1 & 2, and Mullet Key

Channel

Hillsborough County, Florida

MULLET KEY CHANNELEGMONT CUT 2

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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. Accordingly, prospective offerors shall form their own conclusions from the examination of the recovered materials prior to submission of their offer.

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-43.0

-44.0

-45.0

-46.0

-47.0

-50.5

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, silty, mostly fine-grained sand-sized quartz, some silt, few medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 4/1 dark gray (SM) SAND, poorly-graded, mostly fine-grained sand-sized quartz, few fine-grained sand-sized shell, trace fine gravel-sized shell, trace silt, strong reaction with HCl, 2" shell fragments @ 1.7'-1.8' depth, silt seams @ 1.8'-1.9', 2.5Y 6/1 gray (SP) SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 2.5Y 6/1 gray (SM) SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, Silt seams @ 3.9'-4.0', 2.5Y 6/1 gray (SP-SM) SAND, silty, little silt, trace shell, strong reaction with HCl, 2.5Y 5/1 gray (SM)

From El. -49.2 to -49.8 Ft., some silt, few fine to medium-grained sand-sized limestone

BORING TERMINATED IN REFUSAL

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 1.0/1.2 SP*

2 2.0/2.2 SM*

3 3.0/3.2 SP-SM*

4 4.0/4.2 SM*

*Lab visual classification based on gradation curve

-43.0-43.0

-43.5

-45.0

-46.0

-47.0

-50.5 7.5

0.0

0.5

2.0

3.0

4.0

0.0

-49.8 6.8

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

VB-THM18-01

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

VB-THM18-01

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 378,207 Y = 1,190,096

MLLW

N/A

Athena Tech. Inc.

7.5 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.0 Ft.

91 %

SAJ FORM 1836

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-15

SAND, silty, mostly fine-grained sand-sized quartz, little silt, little medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 6/1 gray (SM) SAND, poorly-graded, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 2.5Y 6/1 gray (SP) SILT, inorganic-H, some fine-grained sand-sized quartz, trace shell, strong reaction with HCl, Intermittent Sand seams @ 2.6'-3.5' depth., 2.5Y 4/1 dark gray (MH) SAND, silty, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, little silt, strong reaction with HCl, 2.5Y 4/1 dark gray (SM)

BORING TERMINATED IN REFUSAL

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 0.5/0.7 SP*

2 1.0/1.2 SP*

3 2.5/2.7 MH*

4 3.5/3.7 SM*

*Lab visual classification based on gradation curve

-43.2-43.2

-44.0

-45.4

-46.7

-50.0 6.8

0.0

0.8

2.2

3.5

0.0

-48.2 5.0

-43.2

-43.7

-44.2

-45.7

-46.7

-50.0

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

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

VB-THM18-02

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

VB-THM18-02

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 379,722 Y = 1,190,253

MLLW

N/A

Athena Tech. Inc.

6.8 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.2 Ft.

74 %

SAJ FORM 1836

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-16

-38.7

-39.7

-40.7

-41.5

-42.7

-43.7

-44.7

-46.2

-50.2

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly fine-grained sand-sized quartz, few sand to gravel-sized shell, trace silt, strong reaction with HCl, 2.5Y 7/1 light gray (SP) SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few sand to gravel-sized shell, few silt, strong reaction with HCl, 2.5Y 7/1 light gray (SP-SM)

From El. -41.5 to -42.7 Ft., trace shell

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace sand to gravel-sized shell, strong reaction with HCl, 2.5Y 7/1 light gray (SP) SILT, inorganic-H, some fine-grained sand-sized quartz, trace shell, strong reaction with HCl, Intermittent Sand seams @ 5.9'-7.2' depth., 2.5Y 5/1 gray (MH) SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace sand to gravel-sized shell, strong reaction with HCl, 2.5Y 6/1 gray (SM) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Slightly shelly Sand seams @ 9.5'-9.' and 9.9'-10' depths. (SP)

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

-38.7-38.7

-39.7

-43.7

-44.4

-46.2

-46.9

-50.2 11.5

0.0

1.0

5.0

5.7

7.5

8.2

0.0

-49.3 10.6

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

VB-THM18-03

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

VB-THM18-03

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 381,085 Y = 1,190,418

MLLW

N/A

Athena Tech. Inc.

11.5 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-38.7 Ft.

88 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-17

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 1.0/1.2 SP*

2 2.0/2.2 SP-SM*

3 2.8/3.0 SP-SM*

4 4.0/4.2 SP-SM*

5 5.0/5.2 SP*

6 6.0/6.2 MH*

7 7.5/7.7 SM*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-38.7 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 381,085 Y = 1,190,418

VB-THM18-03

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-18

-43.3

-44.5

-45.5

-46.5

-53.0

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, silty, mostly fine-grained sand-sized quartz, little silt, few sand to gravel-sized shell, strong reaction with HCl, 2.5Y 3/1 very dark gray (SM) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace sand to gravel-sized shell, trace silt, strong reaction with HCl, 2.5Y 6/1 gray (SP) SILT, inorganic-H, little fine-grained sand-sized quartz, trace shell, strong reaction with HCl, Intermittent sand seams @ 2.0'-2.4' depth., 2.5Y 3/1 very dark gray (MH) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace shell, trace silt, strong reaction with HCl, Silt seam @ 3.3'-3.4' depth., 2.5Y 6/1 gray (SP) SILT, inorganic-H, few fine-grained sand-sized quartz, strong reaction with HCl, Intermittent sand seams @ 4.2'-4.7' depth., 2.5Y 4/1 dark gray (MH) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Shelly sand seams @ 6.0'-6.1' depth., 2.5Y 6/1 gray (SP) SILT, inorganic-H, little fine-grained sand-sized quartz, strong reaction with HCl, Intermittent sand seams @ 6.4'-6.8' depth., 2.5Y 5/1 gray

(MH)

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Shelly sand seams @ 7.5'-7.6' depth., 2.5Y 7/1 light gray (SP) From El. -50.8 to -51.4 Ft., little shell, trace limestone

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

-43.0-43.0

-43.7

-44.9

-46.1

-47.1

-47.8

-49.2

-50.1

-53.0 10.0

0.0

0.7

1.9

3.1

4.1

4.8

6.2

7.1

0.0

-51.4 8.4

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

VB-THM18-04

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

VB-THM18-04

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 382,401 Y = 1,190,517

MLLW

N/A

Athena Tech. Inc.

10.0 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.0 Ft.

84 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-19

1 0.3/0.5 SM*

2 1.5/1.7 SP*

3 2.5/2.7 MH*

4 3.5/3.7 SP*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-43.0 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 382,401 Y = 1,190,517

VB-THM18-04

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-20

-43.1

-44.1

-45.1

-46.1

-47.6

-55.1

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 2.5Y 6/1 gray (SP)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, trace shell, strong reaction with HCl, 2.5Y 5/1 gray (SM) From El. -45.1 to -46.1 Ft., little silt

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, 2.5Y 5/1 gray

(SP-SM)

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, trace shell, strong reaction with HCl, Intermittent thin Silt seams @ 5.4'-5.7', shelly Silt seams @ 7.2'-7.3' and 8.6', shell Sand seams @ 7.3'-7.5' and 8.0'-8.2' depths., 2.5Y 6/1 gray (SP)

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, no reaction with HCl, 2.5Y 5/1 gray

(SP-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.

-43.1-43.1

-44.9

-46.3

-47.3

-52.3

-55.1 12.0

0.0

1.8

3.2

4.2

9.2

0.0

-53.5 10.4

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

VB-THM18-05

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

VB-THM18-05

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 383,800 Y = 1,190,670

MLLW

N/A

Athena Tech. Inc.

12.0 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.1 Ft.

87 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-21

3. Laboratory Testing Results

ID DEPTH CLASSIFICATION

1 1.0/1.2 SP*

2 2.0/2.2 SM*

3 3.0/3.2 SM*

4 4.5/4.7 SP-SM*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-43.1 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 383,800 Y = 1,190,670

VB-THM18-05

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-22

-43.6 -43.9

-44.6

-45.6

-46.6

-54.6

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, silty, mostly fine-grained sand-sized quartz, some silt, trace shell, strong reaction with HCl, 2.5Y 5/1 gray (SM) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, trace shell, strong reaction with HCl, 2.5Y 6/1 gray (SP) SILT, inorganic-H, few fine-grained sand-sized quartz, strong reaction with HCl, Intermittent Sand seams @ 1.9'-3.0' depth., 2.5Y 5/1 gray

(MH)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, strong reaction with HCl, Intermittent Sand seams @ 3.0'-6.0' depth., 2.5Y 5/1 gray (SM)

SAND, poorly-graded, mostly fine to medium-grained sand-sized shell, some fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 2.5Y 4/1 dark gray (SP) SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, Shelly Sand seam @ 7.0'-7.2' and 8.2'-8.3' depths., 2.5Y 3/1 very dark gray (SP-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

-43.6-43.6

-44.2

-45.0

-46.4

-49.6

-50.2

-54.6 11.0

0.0

0.6

1.4

2.8

6.0

6.6

0.0

-52.8 9.2

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

VB-THM18-06

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

VB-THM18-06

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 385,054 Y = 1,190,814

MLLW

N/A

Athena Tech. Inc.

11.0 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.6 Ft.

84 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-23

1 0.3/0.5 SM*

2 1.0/1.2 SP*

3 2.0/2.2 MH*

4 3.0/3.2 SM*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-43.6 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 385,054 Y = 1,190,814

VB-THM18-06

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-24

-44.5 -44.7

-45.5

-46.5

-53.3

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, few sand to gravel-sized shell, strong reaction with HCl, 2.5Y 5/1 gray (SP-SM) SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, Thin Silt seams @ 0.2'-0.3' and 0.7'-0.8' depths., 2.5Y 5/1 gray (SM) SILT, inorganic-H, some fine-grained sand-sized quartz, strong reaction with HCl, Silty Sand seam @2.2'-2.5', Slightly silty Sand seam @ 2.7'-3.1' depths., 2.5Y 5/1 gray (MH) SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Shelly Sand seams @3.7'-3.8' and 4.2'-4.4' depths., 2.5Y 7/1 light gray (SP) SAND, silty, mostly fine-grained sand-sized quartz, little silt, few fine-grained sand-sized limestone, trace shell, strong reaction with HCl, 2.5Y 6/1 gray (SM) SAND, poorly-graded, mostly sand to gravel-sized limestone, little fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Limestone seam (1"-3" roc sized) and @ 6'6'-7.0' depth., 2.5Y 7/1 light gray (SP) SAND, silty, some fine-grained sand-sized quartz, some silt, little medium-grained sand-sized shell, few medium-grained sand-sized limestone, strong reaction with HCl, 2.5Y 5/1 gray (SM)

BORING TERMINATED IN REFUSAL

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 0.2/0.4 SP-SM*

2 1.0/1.2 SM*

3 2.0/2.2 MH*

-44.5-44.5 -44.7

-45.6

-48.0

-49.0

-49.7

-51.5

-53.3 8.8

0.0 0.2

1.1

3.5

4.5

5.2

7.0

0.0

-52.8 8.3

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

VB-THM18-07

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

VB-THM18-07

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 386,686 Y = 1,190,968

MLLW

N/A

Athena Tech. Inc.

8.8 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-44.5 Ft.

94 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-25

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-44.5 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 386,686 Y = 1,190,968

VB-THM18-07

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-26

-44.6 -44.8

-45.6

-46.6

-54.6

Vibracore

Vibracore

Vibracore

Vibracore

SAND, silty, some silt, few fine-grained sand-sized quartz, trace shell, strong reaction with HCl, 2.5Y 4/1 dark gray (SM) SILT, inorganic-H, few fine-grained sand-sized quartz, trace organic matter, strong reaction with HCl, Intermittent thin Sand seams @ 0.4'-2.0' depth., 2.5Y 4/1 dark gray (MH) SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, Intermittent thin SP seams @ 1.8'-3.4' depth., 2.5Y 4/1 dark gray (SM)

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, Intermittent thin Silt seams @ 3.7'-5.0' depth., 2.5Y 6/1 gray (SP-SM)

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, trace shell, strong reaction with HCl, Shelly Sand seam @ 6.1'-6.3' depth., 2.5Y 6/1 gray (SP)

SAND, poorly-graded, mostly sand to gravel-sized shell, some fine-grained sand-sized quartz, strong reaction with HCl, Thin shelly Silt seam @ 7.2'-7.3' depth., 2.5Y 6/1 gray (SP) SAND, silty, mostly fine-grained sand-sized quartz, some silt, trace silt, strong reaction with HCl, Sandy Silt seam @ 8.2'-8.5' depth., 2.5Y 5/1 gray (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 0.2/0.4 SM*

-44.6-44.6

-45.0

-46.4

-48.2

-49.6

-51.3

-52.0

-54.6 10.0

0.0

0.4

1.8

3.6

5.0

6.7

7.4

0.0

-54.1 9.5

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

VB-THM18-08

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

VB-THM18-08

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 387,824 Y = 1,190,508

MLLW

N/A

Athena Tech. Inc.

10.0 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-44.6 Ft.

95 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-27

2 1.0/1.2 MH*

3 2.0/2.2 SM*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-44.6 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 387,824 Y = 1,190,508

VB-THM18-08

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-28

-43.4

-44.4

-45.4

-46.4

-53.9

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, 2.5Y 3/1 very dark gray

(SP-SM)

SILT, inorganic-H, little fine-grained sand-sized quartz, trace organic matter, strong reaction with HCl, Intermittent slightly silty Sand seams @ 0.4'-2.9' depth., 2.5Y 3/1 very dark gray

(MH)

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, Intermittent Silt seams @ 3.1'-4.2' depth., 2.5Y 5/1 gray

(SP-SM)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, strong reaction with HCl, Very shelly Sand seam @ 5.7-6.0' depth., 2.5Y 5/1 gray (SM)

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, Shelly Sand seam @ 6.7'-6.8' depth., 2.5Y 6/1 gray (SP)

SAND, silty, mostly fine-grained sand-sized quartz, little silt, little fine to medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 3/1 very dark gray (SM)

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few medium-grained sand-sized shell, few silt, strong reaction with HCl, 2.5Y 5/1 gray

(SP-SM)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, few medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 4/1 dark gray (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.

-43.4-43.4

-44.7

-46.2

-47.8

-49.4

-51.1

-52.6

-53.1

-53.9 10.5

0.0

1.3

2.8

4.4

6.0

7.7

9.2

9.7

0.0

-53.6 10.2

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

VB-THM18-09

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

VB-THM18-09

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 388,602 Y = 1,191,159

MLLW

N/A

Athena Tech. Inc.

10.5 Ft.

Jacksonville District

02-01-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-01-18

-43.4 Ft.

97 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31 32-29

3. Laboratory Testing Results

ID DEPTH CLASSIFICATION

1 1.0/1.2 SP-SM*

2 2.0/2.2 MH*

3 3.0/3.2 SP-SM*

*Lab visual classification based on gradation curve

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

Tampa Harbor Entrance Channel

-43.4 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 388,602 Y = 1,191,159

VB-THM18-09

NAD83 MLLW

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)

SAJ FORM 1836-A

JUN 02

Tampa Harbor Maintenance Dredging Egmont Channel Cuts 1 & 2, and Mullet Key Channel

SECTION 00 31…