Fernandina Harbor Final GDR 2020. Amendment 0001.pdf

SECTION 00 31 32

Geotechnical Data Report for

Fernandina Harbor

Maintenance Dredging

35 and 36-Foot Project

Nassau County, Florida

Prepared by

Geotsystems Branch

Engineering Division

Jacksonville District Corps of Engineers

3 March 2020

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project Nassau County, Florida

00 31 32 - Page 1 Amendment 0001

GEOTECHNICAL DATA REPORT

Table of Contents

1 SCOPE

2 CHARACTER OF MATERIALS

2.1 The 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 3. Index Testing Available for this Project

List of Plates

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

Table 2. Available Surficial Samples Data………………………………………………………….…….7

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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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, respectively. A character of materials paragraph is included to provide a comprehensive description of the materials utilizing both recent and historical knowledge of the project area. Also included in this section are definitions of terms and boring log notes, which provide additional explanation of the boring logs and drilling techniques.

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

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

2 CHARACTER OF MATERIALS

2.1 THE LOCAL GEOLOGY

The Fernandina Harbor is located along the St. Mary's river, which separates Cumberland Island to the north from Amelia Island to the south and is part of southeast Georgia and northeast Florida coastal plain. Surficial sediments composed of sands, shell, soft silts and clays are Holocene (present to 12k years Before Present (BP)) and Pleistocene (12k to 1.8 Million Years ago (Mya)) in age. These surficial sediments represent barrier island and marsh/lagoon facies of numerous shoreline complexes. Sparse Pliocene (1.8 Mya to 5.3 Mya) siliciclastics underlie these Pleistocene sediments. Extensive deposits of the Miocene (5.3 Mya to 23.8 Mya) aged Hawthorn Group lie just under most surficial sediments. The composition of the Hawthorn Group is highly variable, reflecting different depositional environments and repeated reworking of the sediment in response to sea level fluctuations on the shallow water shelf. The lithologies of the Hawthorn Group include limestone, dolomite, clay, and quartz sands with a notable quantity of phosphorite.

2.2 MATERIALS ENCOUNTERED

The materials encountered primarily consist of organic silts, silty sand, fine to medium sized quartz sand, sandy clay, and fat clay with varying amounts of sand sized to gravel sized shell and plant/ organic debris. Although not identified during any sampling or testing, some of the materials encountered consist of OH with organics and have the potential to produce noxious gas if in an anoxic environment.

3 DEFINITIONS

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

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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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.

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).

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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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.

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

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Test/Procedure Method 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 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

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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Test/Procedure Method

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

Table 1. Available Vibracore Data

Designation State Plane, FL-East, NAD83 Project Location Available for InspectionX Y

VB-FH18-1 509586 2307443 Turning Basin

VB-FH18-2 509202 2306561

* Coordinates presented correspond to the project coordinate system and datum

Table 2. Available Surficial Samples Data

Designation State Plane, FL-East, NAD83 Project LocationX Y SS-FH18-1 511222 2309132 Cut 5

* Coordinates presented correspond to the project coordinate system and datum

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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 USCS LL PL PI

Visual Shell

Munsell Color

VB-FH18-1 SC 77 25 52 5Y 2.5/1

VB-FH18-1 SC 10Y 2.5/1

VB-FH18-1 CH 169 41 128 10Y 3/1

VB-FH18-1 SP-SM 0 5Y 4/1

VB-FH18-2 SM 13 5Y 3/1

VB-FH18-2 OH 81 28 53 5Y 2.5/1

VB-FH18-2 SM 4 5Y 3/1

SS-FH18-1 SP NP NV NP 42 5Y 3/1

4.3 BORING LOG NOTES

Borings VB-FH18-1 and VB-FH18-2 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.

Surface Sample SS-FH18-1 was collected with an AMS 6”x6”x6” clam shell sampler which weighs approximately 25 pounds. The sampler was tied to nylon rope and mounted on a shipboard winch with pulley. During sampling, the clam shell was allowed to free-fall from the winch at the target location.

4.4 INSPECTION OF RECOVERED MATERIALS

The 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. The address and hours of operation for the warehouse are 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- 3750 or Chief, Geology and Explorations Section at 904-232-1617 at least four (4) working days before the visit.

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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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.

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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Legend Fernandina Harbor Channel Framework

Station Marker (Major)

Station Marker (Minor)

Channel Centerline

Channel Boundary

Channel Toe

Channel Widener

Turning Basin

³ 0 2,000 4,0001,000 Feet

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

1JLC

KJN

KJN

24 Feb 20

Dsn by:

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project Nassau County, Florida

Geotechnical Drawings Not for Construction

Plate 1

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 10 Amendment 0001

!O

!O

VB-FH18-2

VB-FH18-1

SS-FH18-1

Legend Geotechnical Sample Locations !? Surficial Sample

!O Vibracore Boring

Fernandina Harbor Channel Framework Station Marker (Major)

Station Marker (Minor)

Channel Centerline

Channel Boundary

Channel Toe

Channel Widener

Turning Basin ³

0 500 1,000250 Feet

Dwn by:

Ckd by:

Dated:

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT, CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

PLATE NO.

2JLC

KJN

KJN

24 Feb 20

Dsn by:

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project Nassau County, Florida

Geotechnical Drawings Not for Construction

Cut

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project Nassau County, Florida

00 31 32 - Page 11 Amendment 0001 k3enqvmb Pencil

4.5 BORING LOGS

Applicable boring logs are presented on the following pages.

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.

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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-28.2

-32.2

-38.2

-39.2

-41.2

0.0

4.0

11.0

0.0-28.2-28.2

-32.2

-39.2

N/A

N/A

1. PROJECT

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

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

VERTICAL

OF

VB-FH18-1

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

SILT, organic-H, some silt, little fine-grained sand-sized quartz, trace shell, weak reaction with HCl, 5Y 2.5/1 black (OH)

SAND, clayey, mostly fine-grained sand-sized quartz, some clay, trace shell, weak reaction with HCl, 5Y 2.5/1 black (SC)

From El. -38.2 to -39.2 Ft., mostly fine-grained sand-sized quartz, little clay, trace organic matter, weak reaction with HCl, 10Y 2.5/1 greenish black CLAY, fat, mostly clay, trace quartz, no reaction with HCl, 10Y 3/1 very dark greenish gray (CH)

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

DEPTH

RQD

OR

UD

B

LO

W S

FT

REMARKSCLASSIFICATION OF MATERIALS %

REC.

LE

G

E N

D

ELEV.

B O

X O

R S

A M

P

LE

N -V

A

LU

E

14. ELEVATION GROUND WATER

HORIZONTAL

DISTURBED

DEG. FROM

VERTICAL

SHEET

INCLINED

DIVISION INSTALLATION

VERTICAL

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

VB-FH18-1

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

(Continued)

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

08-19-18

South Atlantic

N/A

08-19-18

-28.2 Ft.

100 %

NAD83

See Remarks

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

X = Y =

MLLW

N/A

King's Bay Entrance Channel and Fernandina Harbor - North Settling Basin and FH

SAJ FORM 1836

JUN 02

N/A

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 13 Amendment 0001

-48.2

-46.7

-47.2

-48.220.0

18.5-46.7

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

N/A 4.0/4.5 SC

N/A 10.0/10.5 SC*

N/A 19.0/19.5 SP-SM*

*Lab visual classification based on gradation curve

4. Additional Laboratory Testing

N/A Atterberg N/A Atterberg N/A Percent Visual Shell

SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, no reaction with HCl, 5Y 4/1 dark gray (SP-SM)

Vibracore

Vibracore

Vibracore

DEPTH

RQD

OR

UD

B

LO

W S

FT

REMARKSCLASSIFICATION OF MATERIALS %

REC.

LE

G

E N

D

ELEV.

B O

X O

R S

A M

P

LE

N -V

A

LU

E

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

-28.2 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = Y =

VB-FH18-1

INSTALLATION

LOCATION COORDINATES

NAD83 MLLW

SAJ FORM 1836-A

JUN 02

N/A

King's Bay Entrance Channel and Fernandina Harbor - North Settling Basin and FH

15.0-43.2

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

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-27.2

-29.2

-31.2

-34.2

-36.2

-37.2

-37.7

-38.7

-40.6

0.0

2.0

7.0

10.0

11.5

13.4

0.0-27.2-27.2

-29.2

-34.2

-37.2

-38.7

-40.6

N/A

N/A

SILT, organic-H, mostly silt, trace shell, no reaction with HCl, 5Y 2.5/1 black (OH)

SAND, silty, mostly fine-grained sand-sized quartz, little silt, little fine-grained sand-sized shell, few organic matter, weak reaction with HCl, 5Y 3/1 very dark gray (SM)

SILT, organic-H, mostly silt, little fine-grained sand-sized quartz, trace shell, weak reaction with HCl, 5Y 2.5/1 black (OH)

SAND, silty, mostly fine-grained sand-sized quartz, little silt, few organic matter, trace shell, strong reaction with HCl, 5Y 3/1 very dark gray

(SM)

SAND, clayey, some fine-grained sand-sized quartz, little clay, little plant debris, few organic matter, weak reaction with HCl, 10YR 2/2 very dark brown (SC)

SAND, poorly-graded, mostly fine-grained sand-sized quartz, little plant debris, no reaction with HCl, 2.5Y 7/1 light gray (SP)

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

Vibracore

DEPTH

RQD

OR

UD

B

LO

W S

FT

REMARKSCLASSIFICATION OF MATERIALS %

REC.

LE

G

E N

D

ELEV.

B O

X O

R S

A M

P

LE

N -V

A

LU

E

14. ELEVATION GROUND WATER

HORIZONTAL

1. PROJECT

CONTRACTOR FILE NO.

11. MANUFACTURER'S DESIGNATION OF DRILL

COMPLETED

18. SIGNATURE AND TITLE OF INSPECTOR

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

VERTICAL

OF

VB-FH18-2

UNDISTURBED (UD)

16. ELEVATION TOP OF BORING

BEARING

8. TOTAL DEPTH OF BORING

SHEETS

5. DIRECTION OF BORING

DISTURBED

DEG. FROM

VERTICAL

SHEET

INCLINED

DIVISION INSTALLATION

VERTICAL

15. DATE BORING

7. DEPTH DRILLED INTO ROCK

12. TOTAL SAMPLES

9. SIZE AND TYPE OF BIT

6. THICKNESS OF OVERBURDEN

VB-FH18-2

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

(Continued)

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

08-19-18

South Atlantic

N/A

08-19-18

-27.2 Ft.

100 %

NAD83

See Remarks

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

X = Y =

MLLW

N/A

King's Bay Entrance Channel and Fernandina Harbor - North Settling Basin and FH

SAJ FORM 1836

JUN 02

N/A

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00 31 32 - Page 15 Amendment 0001

-47.2

-43.2

-45.9

-46.6

-47.220.0

From El. -45.9 to -46.6 Ft., mostly fine to medium-grained sand-sized quartz, no reaction with HCl, 2.5Y 6/2 light brownish gray

From El. -46.6 to -47.2 Ft., mostly fine to medium-grained sand-sized quartz, little plant debris, no reaction with HCl, 2.5Y 6/2 light brownish gray

Vibracore

Vibracore

Vibracore

Vibracore

DEPTH

RQD

OR

UD

B

LO

W S

FT

REMARKS

N/A

CLASSIFICATION OF MATERIALS %

REC.

LE

G

E N

D

ELEV.

B O

X O

R S

A M

P

LE

N -V

A

LU

E

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

-27.2 Ft.

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

Jacksonville District

VERTICAL

SHEETS

SHEET

X = Y =

VB-FH18-2

INSTALLATION

LOCATION COORDINATES

NAD83 MLLWKing's Bay Entrance Channel and Fernandina Harbor - North Settling Basin and FH

SAJ FORM 1836-A

JUN 02

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

N/A 4.0/4.5 SM*

N/A 9.0/9.5 OH

N/A 10.5/11.0 SM*

N/A 16.0/16.5 SP*

*Lab visual classification based on gradation curve

4. Additional Laboratory Testing

N/A Percent Visual Shell N/A Atterberg N/A Percent Visual Shell N/A Percent Visual Shell

15.0-42.2

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 16 Amendment 0001

4.6 LABORATORY TESTING DATA

Applicable laboratory testing data are presented on the following pages.

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 17 Amendment 0001

0.0010.010.1110100

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, clayey, mostly fine-grained sand-sized quartz, some clay, trace shell, black (SC)

5Y 2.5/14.0 to 4.5 Ft.

11/2/2018

77 25 52

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-1

-28.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 18 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, clayey,mostly fine-grained sand-sized quartz, little clay, trace organic matter, greenish black (SC)

10Y 2.5/110.0 to 10.5 Ft.

11/2/2018

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-1

-28.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 19 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A CLAY, inorganic-H, mostly clay, trace quartz, very dark greenish gray (CH)

10Y 3/113.0 to 13.5 Ft.

11/2/2018

169 41 128

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-1

-28.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 20 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, dark gray (SP-SM)

5Y 4/1 019.0 to 19.5 Ft.

11/2/2018

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-1

-28.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 21 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, silty, mostly fine-grained sand-sized quartz, little silt, few organic matter, little fine-grained sand-sized shell, very dark gray (SM)

5Y 3/1 134.0 to 4.5 Ft.

11/2/2018

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-2

-27.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 22 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SILT, organic-H, mostly silt, little fine-grained sand-sized quartz, trace shell, black (OH)

5Y 2.5/19.0 to 9.5 Ft.

11/2/2018

81 28 53

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-2

-27.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 23 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, silty, mostly fine-grained sand-sized quartz, little silt, few organic matter, trace shell, very dark gray (SM)

5Y 3/1 410.5 to 11.0 Ft.

11/2/2018

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-2

-27.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 24 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, poorly-graded, mostly fine-grained sand-sized quartz, little plant debris, light gray (SP)

2.5Y 7/1 016.0 to 16.5 Ft.

11/2/2018

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

VB-FH18-2

-27.2 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 25 Amendment 0001

0.05

GRAVEL

COARSE

0.5

HYDROMETER

GRAIN SIZE IN MILLIMETERS

100 0

GRADATION CURVES

P E

R C

E N

T C

O A

R S

E R

B Y

W E

IG

H

T

P E

R C

E N

T F

IN

E

R B

Y W

E

IG

H T

DATE

PROJECT

8 10 1416 100

GS Org % wn Visual %

Shell (est)

FINE COARSE MEDIUM FINE

SAND

SILT OR CLAY

30 40 50 701 1

0.005

JUN 02

COBBLES

2 20020

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

SAJ FORM 2087

BORING ELEV.

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

N/A SAND, poorly-graded, mostly fine to medium-grained sand-sized quartz, some fine-grained sand-sized to coarse gravel-sized shell up to 4", trace silt, very dark gray (SP)

5Y 3/1 420.0 to 1.0 Ft.

11/2/2018

NP NV NP

BORING NO.

King's Bay Entrance Channel and Fernandina

Harbor - North Settling Basin and FH

SS-FH18-1

-36.6 Ft., MLLW

Fernandina Harbor Maintenance Dredging 35 and 36-Foot Project

00 31 32 - Page 26 Amendment 0001