Tampa_Hbr_O_M_GDR_FY20_17April2020_updated.pdf

SECTION 00 31 32

Geotechnical Data Report

For

Tampa Harbor, Maintenance Dredging 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, Hillsborough Bay Cuts and Upper Channels

Hillsborough County, Florida

Prepared by

Geotechnical Branch

Engineering Division

Jacksonville District Corps of Engineers

17 April 2020

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

4.7 Vibracoring Penetration Reports

List of Tables

Table 1. Available Vibracore Data Table 2. Available Surficial Samples Data Table 3. Index Testing Available for this Project

List of Plates

Plate 1. Overview Map Plate 2. Sample Location Map Plate 3. Sample Location Map Plate 4. Sample Location Map Plate 5. Sample Location Map

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, Hillsborough Bay Cuts and 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 vibracore borings and surficial samples.

The associated logs and laboratory data are presented in paragraphs 4.5 and 4.6, respectively.

Vibracoring penetration report are included in paragraph 4.7. 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 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 Tampa and Hillsborough Bay consists of an uppermost layer of undifferent-iated Quaternary Period sediments, comprised of quartz sand 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 phosphate rich quartz sand, silt, 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 been dredged for maintenance historically multiple times. The last time the Hillsborough Bay and upper channels and were dredged was in 2016/2017. The Tampa Bay cuts were last dredged in 2018/2019.

The materials to be dredged are described on logs and gradation curves from vibracores collected in 2018 and 2019, and subsurface samples collected 2012 and 2017. The materials presented on the 2018 boring logs and 2012 subsurface sample logs and on their respective 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. The supersaturated silts were not captured in the vibracore borings but are

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-3 present as a top layer throughout the dredging template of the Hillsborough Bay cuts and upper channels.

Trash and debris, such as ropes, anchors, beer cans, and plastic bottles from navigation activities are present in the materials to be dredged. At the Ybor and Upper Sparkman Channel shoal materials are littered with additional ship yard 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 on presented on Plates 2 through 5 and listed in Table 1 and 2. Laboratory data for the project area is summarized in Table

3. Vibracore Penetration Reports are included in paragraph 4.7.

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' (6 mm) to 0.1' (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.

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-4

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' (9.1 cm) to 1' (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' (1.8 m).

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

Massive – Over 3' (0.9 m) thick.

Medium-Bedded - 0.3' (9.1 cm) to 1' (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' (30.5 cm) to 3' (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' (0.9 m) to 6' (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' (30.5 cm) to 3' (0.9 m) thick.

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

Thin Parting - Paper thin to 0.002' (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.

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-5

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.

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 D422 Hydrometer Analysis ASTM D422 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

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-6

Test/Procedure Method

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 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 Vibracore Data

Designation State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

VB‐THM18‐13 448533 1197607 Cut‐A Yes

VB‐THM18‐14 456788 1204180

Cut‐B

Yes

VB‐THM18‐15 457527 1205120 Yes

VB‐THM18‐16 458527 1206411 Yes

VB‐THM18‐17 459504 1207724 Yes

VB‐THM18‐18 461957 1210816 Yes

VB‐THM18‐19 462672 1211757 Yes

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-7

Designation State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

VB‐TH19‐01 439950 1193299

Cut A (TB)

Yes

VB‐TH19‐02C 441071 1193755 Yes

VB‐TH19‐03 441965 1194274 Yes

VB‐TH19‐04 445646 1196170 Yes

VB‐TH19‐05 446962 1196829 Yes

VB‐TH19‐06 448896 1197783 Yes

VB‐TH19‐07 450313 1198474 Yes

VB‐TH19‐08B 452880 1199929 Yes

VB‐TH19‐09 455555 1202485

Cut B (TB)

Yes

VB‐TH19‐10 456115 1203348 Yes

VB‐TH19‐11 457159 1204644 Yes

VB‐TH19‐12 458260 1205960 Yes

VB‐TH19‐13A 459087 1207054 Yes

VB‐TH19‐14 459905 1208205 Yes

VB‐TH19‐15 461486 1210263 Yes

VB‐TH19‐16 462247 1211228 Yes

VB‐TH19‐17 463038 1212218 Yes

VB‐TH19‐18A 463644 1212986 Yes

VB‐TH19‐19A 464323 1213843 Yes

VB‐TH19‐20 465096 1214858 Yes

VB‐TH19‐21 466049 1215843 Yes

VB‐TH19‐22 471350 1219359

Cut C (TB)

Yes

VB‐TH19‐23 472685 1220113 Yes

VB‐TH19‐24 473421 1220524 Yes

VB‐TH19‐25 476681 1223094

Cut D (TB)

Yes

VB‐TH19‐26 477598 1224214 Yes

VB‐TH19‐27 478130 1225224 Yes

VB‐TH19‐28 478888 1226385 Yes

VB‐TH19‐29 479463 1227274 Yes

VB‐TH19‐30 479916 1227954 Yes

VB‐TH19‐31B 480734 1229205 Yes

VB‐TH19‐32 481915 1230915 Yes

VB‐TH19‐33 484066 1235469

Cut E (TB)

Yes

VB‐TH19‐34B 484249 1236107 Yes

VB‐TH19‐35 484911 1238235 Yes

VB‐TH19‐36 485353 1239575 Yes

VB‐TH19‐37A 485651 1240543 Yes

VB‐TH19‐38 486319 1242593 Yes

VB‐TH19‐39 486713 1243921 Yes

VB‐TH19‐40A 486958 1244907 Yes

VB‐TH19‐41C 487029 1246171

Cut F (TB)

Yes

VB‐TH19‐42 487108 1247015 Yes

VB‐TH19‐43 487097 1247563 Yes

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-8

Project Location Available for Inspection X Y

VB‐TH19‐44 487601 1253476

Cut F (TB)

Yes

VB‐TH19‐45 487294 1254302 Yes

VB‐TH19‐46A 507446 1262445

Cut A (HB)

Yes

VB‐TH19‐47 511449 1264409 Yes

VB‐TH19‐48A 510835 1266285

Cut C (HB)

Yes

VB‐TH19‐49 511830 1270467 Yes

VB‐TH19‐50 512102 1273436 Yes

VB‐TH19‐51 512894 1283661 Yes

VB‐TH19‐52 513394 1284230 Yes

VB‐TH19‐53A 513583 1286283

Cut C (HB)

Yes

VB‐TH19‐54 513599 1287179 Yes

VB‐TH19‐55A 513427 1289025 Yes

VB‐TH19‐56 513927 1289800 Yes

VB‐TH19‐57A 513648 1291411 Yes

VB‐TH19‐58A 514230 1292948 Yes

VB‐TH19‐59C 513922 1294153 Yes

VB‐TH19‐60 514057 1295492 Yes

VB‐TH19‐61A 514204 1297097 Cut D (HB) Yes

VB‐TH19‐62 514732 1298026

Cut C (HB))

Yes

VB‐TH19‐63B 514555 1298704 Yes

VB‐TH19‐64 513894 1299545

Cut D (HB)

Yes

VB‐TH19‐65 513324 1300781 Yes

VB‐TH19‐68 517894 1297860

East Bay Channel

Yes

VB‐TH19‐69 517521 1299306 Yes

VB‐TH19‐70B 518299 1300796 Yes

VB‐TH19‐71 512291 1277407 Cut C (HB) Yes

Table 2. Available Surficial Samples Data

State Plane, FL-West, NAD83

Project Location Available for Inspection X Y

GS‐THbr17‐10 518775 1301350 East Bay Channel No

GS‐THbr17‐14 524025 1297873 Port Sutton

No

GS‐THbr17‐15 523171 1297871 No

GS‐THbr17‐16 515307 1297147

Cut‐C (HB)

No

GS‐THbr17‐17 515020 1296730 No

GS‐THbr17‐18 514803 1296266 No

GS‐THbr17‐20 514249 1297782 No

GS‐TBD12‐1 514588 1298825

Cut‐D (HB)

No

GS‐TBD12‐3 513986 1299334 No

GS‐TBD12‐4 513974 1300142 No

GS‐TBD12‐5 513553 1300238 No

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-9

Project Location Available for Inspection X Y

GS‐HBEB12‐1 517911 1299915

East Bay Channel

No

GS‐HBPS12‐4 518034 1298339 No

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 Number

USCS LL PL PI

Visual

Shell

CaCO3

GS

Munsell Color

VB-THM18-13 1 SP 73.3 61.7 2.5Y 6/1

VB-THM18-13 2 SP 75.9 2.5Y 6/1

VB-THM18-14 1 SP 64.1 2.5Y 6/1

VB-THM18-14 2 SP 46 2.5Y 6/1

VB-THM18-15 1 SP 43.1 2.5Y 6/1

VB-THM18-15 2 SP 61.2 52.4 2.5Y 6/1

VB-THM18-15 3 SP 57.5 2.5Y 6/1

VB-THM18-16 1 SP 63.1 2.5Y 6/1

VB-THM18-16 2 SP 39.8 2.5Y 6/1

VB-THM18-17 1 SP 13 2.5Y 4/2

VB-THM18-17 2 SP 32.1 2.5Y 4/2

VB-THM18-17 3 SP 39.7 2.5Y 4/2

VB-THM18-18 1 SP 35.2 27.9 2.5Y 6/1

VB-THM18-18 2 SP 14 2.5Y 6/1

VB-THM18-18 3 SP 33.4 2.5Y 6/1

VB-THM18-18 4 SP 17.4 2.5Y 6/1

VB-THM18-19 1 SP 11.9 13 2.5Y 7/1

VB-THM18-19 2 SP 18.5 2.5Y 7/1

VB-THM18-19 3 SP 21.7 2.5Y 7/1

VB-THM18-19 4 SP 28.6 2.5Y 7/1

VB-TH19-01 1 SP 86.74 29 10YR 7/2

VB-TH19-01 2 SP-SM 26 10YR 5/1

VB-TH19-01 3 SM 0 10YR 6/3

VB-TH19-02C 1 SP-SM 27 10YR 6/2

VB-TH19-03 1 SP 29 10YR 3/1

VB-TH19-03 2 SP 39 10YR 4/1

VB-TH19-03 3 SP-SM 32 10YR 4/1

VB-TH19-04 1 SP 47 10YR 7/2

VB-TH19-04 2 SP-SM 8 10YR 6/1

VB-TH19-04 3 Limest. 8 10YR 5/1

VB-TH19-05 1 SP 27 10YR 6/2

VB-TH19-05 2 SP 45 10YR 5/1

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-10

Boring

Sample Number

USCS LL PL PI

Visual

Shell

CaCO3

GS

Munsell Color

VB-TH19-05 3 SP 48 10YR 6/2

VB-TH19-05 4 SM 10 10YR 6/1

VB-TH19-06 1 SP 38 10YR 6/2

VB-TH19-06 2 ML 4 10YR 6/1

VB-TH19-06 3 SP-SM 1 10YR 6/1

VB-TH19-07 1 SP 17 10YR 6/2

VB-TH19-07 2 SP 12 10YR 4/1

VB-TH19-07 3 SP 36 10YR 4/1

VB-TH19-08B 1 SP 19 41.96 10YR 6/2

VB-TH19-08B 2 SP 13 10YR 5/1

VB-TH19-08B 3 SP 20 10YR 4/3

VB-TH19-08B 4 SM 2 10YR 4/3

VB-TH19-09 1 SP 30 10YR 6/1

VB-TH19-09 2 SP 9 10YR 5/1

VB-TH19-10 1 SP 38 67.13 10YR 5/1

VB-TH19-10 2 SP 40 10YR 5/1

VB-TH19-10 3 SP 12 10YR 5/1

VB-TH19-11 1 SP 8 10YR 6/1

VB-TH19-11 2 SP 8 10YR 6/1

VB-TH19-12 1 SP 8 10YR 6/1

VB-TH19-12 2 SP 28 10YR 5/1

VB-TH19-12 3 SP 18 10YR 6/1

VB-TH19-13A 1 SP 10 10YR 6/1

VB-TH19-13A 2 SP 13 10YR 6/1

VB-TH19-14 1 SP 5 10YR 7/1

VB-TH19-14 2 SP 2 10YR 7/1

VB-TH19-15 1 SP 22 38.61 10YR 6/1

VB-TH19-15 2 SP 4 10YR 6/1

VB-TH19-15 3 SP 16 10YR 6/1

VB-TH19-16 1 SP 4 5.29 10YR 7/2

VB-TH19-16 2 SP 2 10YR 7/2

VB-TH19-16 3 SP 2 10YR 7/2

VB-TH19-17 1 SM 3 9.95 10YR 6/1

VB-TH19-17 2 SP 2 10YR 6/1

VB-TH19-17 3 SP-SM 7 10YR 8/1

VB-TH19-18A 1 SP 16 10YR 5/1

VB-TH19-18A 2 SP 25 10YR 5/1

VB-TH19-19A 1 SP 7 10YR 5/1

VB-TH19-19A 2 SP 11 10YR 5/1

VB-TH19-20 1 SP 22 64.89 10YR 5/1

VB-TH19-20 2 SP 27 10YR 6/1

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-11

Sample Number

USCS LL PL PI

Visual

Shell

CaCO3

GS

Munsell Color

VB-TH19-20 3 SM 7 10YR 7/3

VB-TH19-21 1 SP 4 10YR 7/1

VB-TH19-21 2 SP 29 10YR 7/1

VB-TH19-21 3 SP 7 10YR 6/1

VB-TH19-22 1 SP 12 10YR 5/1

VB-TH19-22 2 SP 4 10YR 5/1

VB-TH19-22 3 SP 2 10YR 5/1

VB-TH19-23 1 SP 20 30.94 10YR 6/1

VB-TH19-23 2 SP 6 10YR 6/1

VB-TH19-23 3 SP 6 10YR 6/1

VB-TH19-24 1 SP 6 23.92 10YR 5/1

VB-TH19-24 2 SP 5 10YR 6/1

VB-TH19-24 3 SP 5 10YR 6/1

VB-TH19-25 1 SP 2 12.76 10YR 5/1

VB-TH19-25 2 SP 1 10YR 8/1

VB-TH19-44 1 SP 68 10YR 6/4

VB-TH19-44 2 SP-SM 52 10YR 5/1

VB-TH19-44 3 SP-SM 54 10YR 5/1

VB-TH19-45 1 SP 1 10YR 5/1

VB-TH19-45 2 SM 0 10YR 4/1

VB-TH19-45 3 ML 0 10YR 3/2

VB-TH19-46A 1 SP 3 10YR 5/1

VB-TH19-46A 2 SP-SM 2 10YR 4/1

VB-TH19-46A 3 SW 4 10YR 6/1

VB-TH19-47 1 SM 0 10YR 3/1

VB-TH19-47 2 SM 0 10YR 2/1

VB-TH19-47 3 SM 9 10YR 4/1

VB-TH19-48A 1 SM 0 10YR 3/1

VB-TH19-48A 2 SM 0 10YR 3/1

VB-TH19-48A 3 ML 0 10YR 3/1

VB-TH19-49 1 SP 45 10YR 6/1

VB-TH19-49 2 SP-SM 14 10YR 5/1

VB-TH19-49 3 SP 1 10YR 7/1

VB-TH19-50 1 SW 10 10YR 7/1

VB-TH19-50 2 SW 19 10YR 7/1

VB-TH19-50 3 SP-SM 34 10YR 3/1

VB-TH19-51 1 SM 0 10YR 3/1

VB-TH19-51 2 SM 0 10YR 3/1

VB-TH19-52 1 SM 0 10YR 4/1

VB-TH19-52 2 SM 0 10YR 4/1

VB-TH19-52 3 SM 13 10YR 4/1

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-12

Sample Number

USCS LL PL PI

Visual

Shell

CaCO3

GS

Munsell Color

VB-TH19-53A 1 SM 0 10YR 4/1

VB-TH19-53A 2 ML 6 10YR 6/3

VB-TH19-53A 3 ML 0 10YR 4/1

VB-TH19-54 1 SM 0 10YR 4/1

VB-TH19-54 2 SM 0 10YR 6/1

VB-TH19-54 3 Limest. 0 10YR 8/1

VB-TH19-55A 1 SM 0 10YR 2/1

VB-TH19-55A 2 SM 0 10YR 5/1

VB-TH19-55A 3 SM 0 10YR 5/1

VB-TH19-56 1 SM 0 10YR 3/1

VB-TH19-56 2 SM 0 10YR 3/1

VB-TH19-56 3 SM 0 10YR 3/1

VB-TH19-57A 1 SM 0 10YR 3/1

VB-TH19-57A 2 SM 0 10YR 3/1

VB-TH19-57A 3 SP-SM 1 10YR 3/1

VB-TH19-58A 1 ML 0 10YR 3/1

VB-TH19-58A 2 ML 0 10YR 3/1

VB-TH19-59C 1 SM 0 10YR 3/1

VB-TH19-59C 2 SM 0 10YR 3/1

VB-TH19-60 1 ML 0 10YR 4/1

VB-TH19-60 2 ML 1 10YR 4/1

VB-TH19-61A 1 ML 0 10YR 3/1

VB-TH19-61A 2 ML 0 10YR 3/1

VB-TH19-62 1 ML 0 10YR 3/1

VB-TH19-62 2 ML 0 10YR 3/1

VB-TH19-63B 1 SM 0 10YR 3/1

VB-TH19-63B 2 SM 0 10YR 3/1

VB-TH19-64 1 SM 0 10YR 3/1

VB-TH19-64 2 ML 0 10YR 3/1

VB-TH19-65 1 ML 2 10YR 3/1

VB-TH19-65 2 ML 0 10YR 3/1

VB-TH19-68 1 SM 0 10YR 3/1

VB-TH19-68 2 ML 0 10YR 3/1

VB-TH19-69 1 SM 0 10YR 3/1

VB-TH19-69 2 ML 6 10YR 3/1

VB-TH19-70B 1 ML 0 10YR 3/1

VB-TH19-70B 2 SM 0 10YR 3/1

VB-TH19-71 1 SM 7 10YR 3/1

VB-TH19-71 2 SP 21 10YR 4/1

VB-TH19-71 3 SP-SM 19 10YR 4/1

GS-TBD12-1 1 MH 61 55 6 2.57 10YR 3/1

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-13

Sample Number

USCS LL PL PI

Visual

Shell

CaCO3

GS

Munsell Color

GS-TBD12-3 1 MH 2.61 10YR 3/1

GS-HBEB12-1 1 MH 2.62 10YR 3/1

GS-THbr17-04 1 MH 10Y 3/1

GS-THbr17-10 1 MH 10Y 4/1

GS-THbr17-14 1 MH 10Y 3/1

GS-THbr17-15 1 MH 10Y 3/1

GS-THbr17-16 1 MH 10Y 3/1

GS-THbr17-17 1 MH 10Y 4/1

GS-THbr17-18 1 MH 10Y 4/1

GS-THbr17-20 1 MH 10Y 4/1

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

CaCO3: Carbonate content, 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.

All vibracore borings of the VB-THM18- series 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 moon pool 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.

The vibracore apparatus is equipped with a graph-type depth of penetration recorder.

All vibracore borings of the VB-TH19- series were sampled using an Alpine style, pneumatic vertical hammer, vibracore drilling apparatus having a continuous 20-foot by 3 or 3 1/2-inch core barrel with clear plastic core liner that was advanced until a depth of 20 feet was reached 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.

The vibracore apparatus is equipped with a graph-type depth of penetration recorder.

4.4 INSPECTION OF RECOVERED MATERIALS

The material recovered from vibracores indicating a “yes” in Table 1 is available for inspection by prospective offerors at the Corps of Engineers District warehouse listed below:

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 project geologist at 904-232-1890 or Chief, Geology and Explorations Section at 904-232-1617 at least four (4) working days before the visit.

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-14

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.

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-15

Gadsden Point Cut

C U

T- C

(H B

C U

T-D (H

B

PLATE 3

PLATE 4

PLATE 2

PLATE 5

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

1JC

BUN

BUN

02FEB2020

Dsn by:

MAINTENANCE DREDGING 2020

Hillsborough County Tampa Harbor

Ü

0 5 102.5 Miles

OVERVIEW MAP

Project Area

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-16

!O

!O

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Yb or

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Ba y C ha nn el Ex ten sio n

Port Sutton

Ea st B ay Ch an ne l

CUT-C(HB)

GS-THbr17-15 GS-THbr17-14

VB-TH19-69

VB-TH19-68

VB-TH19-64

VB-TH19-62

VB-TH19-70B

VB-TH19-63B

VB-TH19-61A

GS-TBD1VB-TH19-65

-5

GS-HBPS12-4

GS-HBEB12-1

GS-THbr17-18GS-THbr17-17

GS-THbr17-10

GS-TBD12-4

GS-TBD12-3 GS-TBD12-1

GS-THbr17-20 GS-THbr17-16

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

2JC

BUN

BUN

17April2020

Dsn by:

MAINTENANCE DREDGING 2020

Hillsborough County Tampa Harbor

Legend !O Vibracore Location !? Surficial Sample Location

Channel Outline Ü

0 2,000 4,0001,000 Feet

OVERVIEW MAP

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-17

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CUT-A(HB)

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T- C

(H B

Alafia ChannelVB-TH19-71

VB-TH19-60

VB-TH19-56

VB-TH19-54

VB-TH19-52VB-TH19-51

VB-TH19-50

VB-TH19-49

VB-TH19-47

VB-TH19-59C

VB-TH19-58A

VB-TH19-57A

VB-TH19-55A

VB-TH19-53A

VB-TH19-48A

VB-TH19-46A

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

3JC

BUN

BUN

5April16

Dsn by:

MAINTENANCE DREDGING 2020

Hillsborough County Tampa Harbor

Legend !O Vibracore Location

Channel OutlineÜ

0 3,500 7,0001,750 Feet

OVERVIEW MAP

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-18

!O

!O !O

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!O !O

Gadsden Point Cut

C ut

-F

T B

C ut

-D (T

B)

C ut

-E

T B

Cut-C

(TB)

VB-TH19-43

VB-TH19-39VB-TH19-38

VB-TH19-36VB-TH19-35

VB-TH19-33

VB-TH19-32

VB-TH19-30

VB-TH19-29

VB-TH19-28VB-TH19-27

VB-TH19-26VB-TH19-25

VB-TH19-24

VB-TH19-23

VB-TH19-22

VB-TH19-41CVB-TH19-40A

VB-TH19-37A

VB-TH19-34B

VB-TH19-31B

VB-TH19-45

VB-TH19-44

VB-TH19-42

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

BUN

BUN

2Feb2020

Dsn by:

MAINTENANCE DREDGING 2020

Hillsborough County Tampa Harbor

Legend !O Vibracore Location

Channel Outline Ü

0 6,000 12,0003,000 Feet

OVERVIEW MAP

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-19

!O

!O

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!O

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!O

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!OVB-TH19-21

VB-TH19-20

VB-TH19-17

VB-TH19-16

VB-TH19-15

VB-TH19-14

VB-TH19-12VB-TH19-11VB-TH19-10

VB-TH19-09

VB-TH19-07

VB-TH19-06

VB-TH19-05

VB-TH19-04

VB-TH19-03

VB-TH19-01

VB-TH19-19A

VB-TH19-18A

VB-TH19-13A

VB-TH19-08B

VB-TH19-02C

VB-THM18-19

VB-THM18-18

VB-THM18-17

VB-THM18-16

VB-THM18-15

VB-THM18-14

VB-THM18-13

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

BUN

BUN

2Feb2020

Dsn by:

MAINTENANCE DREDGING 2020

Hillsborough County Tampa Harbor

Legend !O Vibracore Location

Channel Outline Ü

0 6,000 12,0003,000 Feet

OVERVIEW MAP

C ut

-B (T

B)

Cut-A (TB)

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-20

4.5 BORING LOGS

Applicable boring logs are presented on the following pages.

The logs 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, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-21

-44.9 -45.1

-46.4

-53.2

Vibracore

Vibracore

Vibracore

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)

From El. -47.5 to -49.0 Ft., some fine to medium-grained sand-sized shell

SAND, silty, mostly fine-grained sand-sized quartz, some silt, weak reaction with HCl, 2.5Y 6/4 light yellowish brown (SM)

SILT, inorganic-H, few fine-grained sand-sized quartz, weak reaction with HCl, 10Y 5/1 greenish gray (MH)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, weak reaction with HCl, 2.5Y 6/4 light yellowish brown (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*

1 Post Sieve /8.3 SP*

2 1.5/1.7 SP*

*Lab visual classification based on gradation curve

-44.9-44.9

-49.0

-50.1

-51.6

-53.2 8.3

0.0

4.1

5.2

6.7

0.0

-52.2 7.3

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-THM18-13

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-THM18-13

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 448,533 Y = 1,197,607

MLLW

N/A

Corps of Engineers - CESAJ

8.3 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-44.9 Ft.

88 %

SAJ FORM 1836

JUN 02

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-22

-44.0

-44.5

-45.5

-50.5

Vibracore

Vibracore

Vibracore

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

From El. -45.6 to -48.5 Ft., trace shell

SAND, poorly-graded, mostly fine to medium-grained sand-sized shell, some fine-grained sand-sized quartz, trace limestone, Intermittent silty sand seams @ 4.5'-5.0' depth., 2.5Y 5/1 gray (SP) SAND, silty, mostly fine to medium-grained sand-sized quartz, little silt, weak reaction with HCl, 2.5Y 3/1 very 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 1.5/1.7 SP*

*Lab visual classification based on gradation curve

-44.0-44.0

-48.5

-49.2

-50.5 6.5

0.0

4.5

5.2

0.0

-50.0 6.0

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

VB-THM18-14

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-THM18-14

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 456,788 Y = 1,204,180

MLLW

N/A

Corps of Engineers - CESAJ

6.5 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-44.0 Ft.

92 %

SAJ FORM 1836

JUN 02

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-23

-43.5 -43.7

-44.5

-45.5

-48.5

Vibracore

Vibracore

Vibracore

Vibracore

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

From El. -46.1 to -47.7 Ft., trace medium-grained sand-sized shell

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*

2 1.0/1.2 SP*

2 Post Sieve /5.0 SP*

3 2.0/2.2 SP*

*Lab visual classification based on gradation curve

-43.5-43.5

-48.5 5.0

0.00.0

-47.7 4.2

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-THM18-15

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-THM18-15

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 457,527 Y = 1,205,120

MLLW

N/A

Corps of Engineers - CESAJ

5.0 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-43.5 Ft.

84 %

SAJ FORM 1836

JUN 02

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-24

-44.1

-45.1

-46.1

-50.6

Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, Rock seam @ 5.3'-5.5' depth, 2.5Y 6/1 gray (SP)

SAND, silty, mostly fine-grained sand-sized quartz, some silt, trace limestone, trace shell, strong reaction with HCl, 2.5Y 7/1 light 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 1.0/1.2 SP*

2 2.0/2.2 SP*

*Lab visual classification based on gradation curve

-44.1-44.1

-49.6

-50.6 6.5

0.0

5.5

0.0

-49.8 5.7

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-THM18-16

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-THM18-16

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 458,527 Y = 1,206,411

MLLW

N/A

Corps of Engineers - CESAJ

6.5 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-44.1 Ft.

88 %

SAJ FORM 1836

JUN 02

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-25

-43.2

-44.7

-45.7

-55.2

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace shell, trace silt, strong reaction with HCl, Intermittent silty sand seams throughout depth range @ 4.0'-11.6' depth (Dark grayish brown, 2.5Y 4/2), (weak reaction to HCI), 2.5Y 6/1 gray

(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.

-43.2-43.2

-55.2 12.0

0.00.0

-54.8 11.6

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-THM18-17

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-THM18-17

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 459,504 Y = 1,207,724

MLLW

N/A

Corps of Engineers - CESAJ

12.0 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-43.2 Ft.

97 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-26

3. Laboratory Testing Results

SAMPLE SAMPLE LABORATORY

ID DEPTH CLASSIFICATION

1 0.5/0.7 SP*

2 1.5/1.7 SP*

3 2.5/2.7 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

-43.2 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 459,504 Y = 1,207,724

VB-THM18-17

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 O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-27

-42.6 -42.8

-43.6

-44.6

-45.6

-51.6

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

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

From El. -45.5 to -47.7 Ft., trace shell, strong reaction with HCl, Silty sand seam @ 5.0'-5.1' depth, 2.5Y 6/1 gray

From El. -47.7 to -48.7 Ft., weak reaction with HCl, 2.5Y 7/1 light gray

From El. -48.7 to -49.2 Ft., few medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 7/1 light gray From El. -49.2 to -50.2 Ft., some fine to medium-grained sand-sized shell, strong reaction with HCl, 2.5Y 8/3 pale yellow

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*

1 Post Sieve /9.0 SP*

2 1.0/1.2 SP*

3 2.0/2.2 SP*

-42.6-42.6

-51.6 9.0

0.00.0

-50.2 7.6

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-THM18-18

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-THM18-18

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 461,957 Y = 1,210,816

MLLW

N/A

Corps of Engineers - CESAJ

9.0 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-42.6 Ft.

96 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-28

4 3.0/3.2 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

-42.6 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 461,957 Y = 1,210,816

VB-THM18-18

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 O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-29

-42.4

-42.9

-43.9

-44.9

-45.9

-52.4

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace shell, trace silt, strong reaction with HCl, 2.5Y 7/1 light gray

(SP)

From El. -46.6 to -48.0 Ft., few medium-grained sand-sized shell

From El. -48.0 to -48.7 Ft., little fine to medium-grained sand-sized shell, Shelly sand seam @ 6.1'-6.3' depth SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, few medium to coarse-grained sand-sized shell, strong reaction with HCl, 3" rock @ 7.7'-8.0' depth, 2.5Y 8/2 pale yellow

(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

ID DEPTH CLASSIFICATION

1 0.5/0.7 SP*

-42.4-42.4

-48.7

-52.4 10.0

0.0

6.3

0.0

-50.4 8.0

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

VB-THM18-19

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-THM18-19

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 462,672 Y = 1,211,757

MLLW

N/A

Corps of Engineers - CESAJ

10.0 Ft.

Jacksonville District

02-02-18

South Atlantic

N/A

Tampa Harbor Entrance Channel

02-02-18

-42.4 Ft.

80 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-30

1 Post Sieve /10.0 SP*

2 1.5/1.7 SP*

3 2.5/2.7 SP*

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

-42.4 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 462,672 Y = 1,211,757

VB-THM18-19

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 O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-31

-43.6 -43.9

-44.3

-45.5

-53.6

Vibracore Vibracore

Vibracore

Vibracore

SAND, poorly-graded, mostly sand to gravel-sized shell, few fine to coarse-grained sand-sized quartz, trace silt, strong reaction with HCl, 10YR 7/2 light gray (SP) SAND, poorly-graded with silt, mostly sand to gravel-sized shell, some fine to coarse-grained sand-sized quartz, few silt, strong reaction with HCl, 10YR 5/1 gray

(SP-SM)

SILT, inorganic-L, mostly silt, few fine-grained sand-sized quartz, no reaction with HCl, with interbedded sandstone layers, 10YR 6/4 light yellowish brown (ML)

From El. -51.7 to -53.6 Ft., 10YR 6/2 light brownish gray

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 0.3/0.5 SP*

-43.6-43.6

-44.2

-44.8

-53.6 10.0

0.0

0.6

1.2

0.0

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

VB-TH19-01

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-TH19-01

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

NAD83

See Remarks

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

X = 1,193,299 Y = 439,950

MLLW

N/A

Corps of Engineers - CESAJ

10.0 Ft.

Jacksonville District

10-06-19

South Atlantic

N/A

American Vibracore Inc.

Tampa Harbor Entrance Channel

Cut A (TB)

10-06-19

-43.6 Ft.

100 %

SAJ FORM 1836

JUN 02

(Continued)

Tampa Harbor O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-32

2 0.7/0.9 SP-SM*

3 1.9/2.1 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 = 1,193,299 Y = 439,950

VB-TH19-01

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 O&M, 43 & 44 Foot Project, Tampa Bay Cuts, Gadsden Point Cut, SECTION 00 31 32-33

-46.8

-47.2

-55.2

Vibracore

Vibracore

SAND, poorly-graded with silt, mostly sand to gravel-sized shell, few subangular sand to gravel-sized limestone, few silt, strong reaction with HCl, 10YR 6/2 light brownish gray (SP-SM) SAND, poorly-graded, some sand to gravel-sized shell, little fine to medium-grained sand-sized quartz, trace silt, strong reaction with HCl, 10YR 6/2 light brownish gray (SP) SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, 10YR 5/1 gray

(SP-SM)

From El. -50.4 to -52.0 Ft., few shell, few sand to gravel-sized sandstone, shell fragments decreasing…