B.08_FY23 Vilano-St Johns GDR - final.pdf

SECTION 00 31 32

Geotechnical Data Report for

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

ST. JOHNS COUNTY, FLORIDA

Prepared by

Geotechnical Branch

Engineering Division

Jacksonville District Corps of Engineers

August 2022

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

ST. JOHNS COUNTY, FLORIDA

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GEOTECHNICAL DATA REPORT

Table of Contents

1 SCOPE

2 CHARACTER OF MATERIALS

2.1 Regional Geology

2.2 The Local Geology

2.3 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: Index Testing Available for this Project

List of Plates

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

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COASTAL STORM RISK MANAGEMENT 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 vibracore 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 Geosystems Branch.

2 CHARACTER OF MATERIALS

2.1 REGIONAL GEOLOGY

Peninsular Florida occupies a portion of the much larger geologic unit called the Florida Plateau.

Deep water in the Gulf of Mexico is separated from deep water of the Atlantic Ocean by this partially submerged platform nearly 500 miles long and 450 miles wide. In the last 200 million years, the plateau has been alternately dry land or covered by shallow seas. During that time, up to 20,000 feet of carbonate and marine sediments were deposited. There has been a tilting of the Florida Plateau about its longitudinal axis. As a result, the west coast is partially submerged, as indicated by the wide estuaries and offshore channels, while the east coast is correspondingly elevated, showing the characteristics of an emergent coastline.

During the last million years, a series of four glacial periods, or ice ages, brought about significant changes in sea level. As a result of these sea level fluctuations, the Florida peninsula has been covered and exposed.

Approximately 15,000 years ago, sea level began its most recent rise towards present sea level.

About 7,000 years ago, the rate of sea level rise to about 30 feet below its present level. It was at this most recent sea level rise that the modern barrier islands of southeast peninsular Florida formed. The primary components of the modern barrier island sand is quartz that has migrated southward along the Atlantic coast and the reworking of the Pamlico Sand that was previously deposited over the entire region. Much of the coastal sediments are carbonates locally produced by calcite producing plants and animals. Additional carbonate material is reworked materials from outcropping Pleistocene formations offshore (Duane and Meisburger, 1969).

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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2.2 THE LOCAL GEOLOGY

The project is located on the barrier beach on the Atlantic Ocean, in central St Johns County, in the Atlantic Coastal Plain physiographic unit. The regional geology of St. Johns County for the Quaternary and upper Tertiary Systems range in age from Recent to Pleistocene to Miocene age sediments. The Recent to Pleistocene age sediments are undifferentiated and cover the entire county and consist of fine to medium quartz sand and thin lenses of shell and clay of varying thickness. These beds are generally discontinuous and vary within short distances both horizontally and vertically. The shell beds thicken and can become consolidated along the coast and form coquina of the late Pleistocene Anastasia Formation. These sediments occur at land surface and have an average thickness of 50 feet. These deposits lie conformably with the sediments of the Upper Miocene/Pliocene sediments. The Miocene/Pliocene sediments are comprised of interbedded layers of marine, fine to medium sand, shell and green, calcareous, silty clay. These sediments vary in thickness (20-75 feet) throughout the county, and have an overall trend to thicken to the east.

2.3 MATERIALS ENCOUNTERED

The sand to be utilized will be removed from an offshore sand source, N-3. Vibracore borings were collected in 2009 (2 vibracores) and 2015 (27 vibracores) to characterize the material within N-3.

The materials within the dredging template are described as homogenous, beach compatible sand, consisting of white to brownish gray, fine- to medium-grained quartz sand that is poorly-graded and contains few to some shell fragments up to 2 inches, few medium-grained sand size limestone fragments, and trace silt. No rock was encountered in any of the borings.

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.

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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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).

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).

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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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

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

SOUTH PONTE VEDRA AND VILANO BEACH

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Test/Procedure Method

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

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 summarize the field investigations data set available for this project.

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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Table 1. Available Vibracore Data

Boring Designation

FL State Plane, FL - East (ft) Project Location

Available for Inspection X Y

VB-SJN15-01 600629 2062772

F

VB-SJN15-02 601642 2062879 ✓

VB-SJN15-03 599600 2062664 ✓

VB-SJN15-04 598478 2063569 ✓

VB-SJN15-05 598582 2062532 ✓

VB-SJN15-06 599486 2063652 ✓

VB-SJN15-07 600504 2063760 ✓

VB-SJN15-08 601528 2063898 ✓

VB-SJN15-09 601418 2064910

E

VB-SJN15-10 600400 2064778 ✓

VB-SJN15-11 599366 2064750 ✓

VB-SJSP09-36 598432 2064321

VB-SJN15-12 601320 2065929

D

VB-SJN15-13 600302 2065785 ✓

VB-SJN15-14 599289 2065677 ✓

VB-SJN15-15 598233 2065473 ✓

VB-SJN15-16 601216 2066929

C

VB-SJN15-17 600198 2066797 ✓

VB-SJN15-18 599190 2066696 ✓

VB-SJN15-19 598188 2066636 ✓

VB-SJN15-20 601180 2067947

B

VB-SJN15-21 600147 2067852 ✓

VB-SJN15-22 599155 2067738 ✓

VB-SJN15-23 598152 2067618 ✓

VB-SJSP09-5 599781 2067394

VB-SJN15-24 600992 2068941

A

VB-SJN15-25 599984 2068804 ✓

VB-SJN15-26 598993 2068690 ✓

VB-SJN15-27 597954 2068637 ✓

4.2 SUMMARY OF INDEX TESTING DATA

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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Table 2: Index Testing Available for this Project

Designation

Sample Number

USCS

Percent

Carbonate Percent Visual

Shell Munsell

Color

VB-SJN15-01

1 SP 7.9 2.5Y 8/1

2 SP 6.9 2.5Y 6/1

3 SP-SM 3.6 10Y 5/1

VB-SJN15-02

1 SP 8.3 2.5Y 6/1

2 SP 3.8 2.5Y 6/1

3 SP 4.5 2.5Y 5/1

4 SP-SM 6.1 2.5Y 5/1

VB-SJN15-03

1 SP 10.4 2.5Y 5/1

2 SP-SM 6.9 2.5Y 5/1

3 SP-SM 4 2.5Y 5/1

VB-SJN15-04

1 SP 8.8 2.5Y 7/1

2 SP-SM 11.4 2.5Y 6/1

3 SP 36 10Y 5/1

VB-SJN15-05

1 SP 6.5 2.5Y 6/1

2 SP 7.5 2.5Y 5/1

VB-SJN15-06

1 SP 10.2 2.5Y 6/2

2 SP 24.3 2.5Y 5/1

VB-SJN15-07

1 SP 3.2 2.5Y 6/2

2 SP 9.3 2.5Y 6/2

3 SP 5.5 10Y 5/1

VB-SJN15-08 1 SP 8 2.5Y 5/1

VB-SJN15-09

1 SP 10.4 2.5Y 6/2

2 SP 11 2.5Y 6/1

3 SP 17.4 2.5Y 6/1

4 SP 21.3 2.5Y 7/1

5 SP 7 2.5Y 7/1

6 SP 2.83 2.5Y 5/1

VB-SJN15-10

1 SP 15.3 2.5Y 7/1

2 SP 13.3 2.5Y 6/2

3 SP 6.4 2.5Y 6/2

VB-SJN15-11

1 SP 11.51 11.5 2.5Y 7/1

2 SP 16.4 2.5Y 7/1

3 SP 16 2.5Y 6/2

4 SP 5.9 2.5Y 6/2

5 SP 5.7 2.5Y 6/2

6 SP 7.1 2.5Y 6/2

7 SP 11.5 2.5Y 5/1

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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Sample Number

USCS

Percent

Carbonate Percent Visual

Shell Munsell

Color

VB-SJN15-12

1 SP 9.6 2.5Y 7/2

2 SP 23.1 2.5Y 7/2

3 SP 16.2 2.5Y 6/2

4 SP 10.7 2.5Y 6/2

5 SP 7.3 2.5Y 5/1

VB-SJN15-13

1 SP 9.8 2.5Y 7/1

2 SP 5.7 2.5Y 7/1

3 SP 9 2.5Y 6/2

4 SP 17.5 2.5Y 6/2

5 SP 7.5 2.5Y 6/1

6 MH 0 2.5Y 6/1

VB-SJN15-14

1 SP 9.1 2.5Y 7/1

2 SP 19.89 16.7 2.5Y 7/1

3 SP 8 2.5Y 7/1

4 SP 9.2 2.5Y 7/1

5 SP 6.9 2.5Y 7/1

6 SP 5.3 2.5Y 5/1

VB-SJN15-15

1 SP 12 2.5Y 7/1

2 SP 6.9 2.5Y 7/1

3 SP 8.5 2.5Y 7/1

4 SP 9.8 2.5Y 7/1

5 SP-SM 6.3 2.5Y 5/1

VB-SJN15-16

1 SP 14.8 2.5Y 6/2

2 SP 8.9 2.5Y 6/2

3 SP 13.03 14.8 2.5Y 6/2

4 SP 1.9 2.5Y 5/2

5 SP 6 2.5Y 5/2

6 SP-SM 4.3 10Y 5/1

VB-SJN15-17

1 SP 14.3 2.5Y 7/1

2 SP 12.7 2.5Y 7/1

3 SP 18.4 2.5Y 7/2

4 SP 10.8 2.5Y 6/1

5 SP 12.4 2.5Y 6/1

6 SP 5.8 2.5Y 5/1

VB-SJN15-18

1 SP 16.6 2.5Y 7/1

2 SP 10.9 2.5Y 6/2

3 SP 8.6 2.5Y 6/2

4 SP 13.3 2.5Y 6/2

5 SP 17.3 2.5Y 6/2

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Sample Number

USCS

Percent

Carbonate Percent Visual

Shell Munsell

Color

VB-SJN15-19

1 SP 6.7 2.5Y 7/1

2 SP 8.8 2.5Y 7/1

3 SP 10.5 2.5Y 7/1

4 SP 9.6 2.5Y 7/2

5 SP 4.9 2.5Y 7/1

6 SP 8.4 2.5Y 5/1

VB-SJN15-20

1 SP 10.7 2.5Y 7/1

2 SP 16.7 2.5Y 7/1

3 SP 12.4 2.5Y 7/2

4 SP 8.1 2.5Y 7/2

5 SP 11 2.5Y 5/1

VB-SJN15-21

1 SP 19.4 2.5Y 5/1

2 SP 12.2 2.5Y 5/1

3 SP 15.9 2.5Y 5/1

4 SP 15.51 12.5 2.5Y 5/1

5 SP 14.1 2.5Y 5/1

6 SP 16 2.5Y 5/1

VB-SJN15-22

1 SP 20.8 2.5Y 6/1

2 SP 9.9 2.5Y 6/1

3 SP 12.6 2.5Y 5/1

4 SP 8.8 2.5Y 6/1

5 SP 6.8 2.5Y 5/2

6 SP 2.3 2.5Y 5/2

7 SP 5 2.5Y 5/2

VB-SJN15-23

1 SP 12 2.5Y 5/1

2 SP 13 2.5Y 7/1

3 SP 10.3 2.5Y 6/1

4 SP 3.7 2.5Y 5/1

VB-SJN15-24

1 SP 17.5 2.5Y 7/1

2 SP 16.9 2.5Y 7/1

3 SP 10.7 2.5Y 6/2

4 SP 13 2.5Y 6/2

5 SP 8 2.5Y 5/1

VB-SJN15-25

1 SP 18.27 17.3 2.5Y 7/1

2 SP 9.4 2.5Y 6/2

3 SP 9.2 2.5Y 6/2

4 SP 14.9 2.5Y 5/1

5 SP 6.9 2.5Y 5/1

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Sample Number

USCS

Percent

Carbonate Percent Visual

Shell Munsell

Color

VB-SJN15-26

1 SP 17.1 2.5Y 7/2

2 SP 17 2.5Y 7/2

3 SP 17.1 2.5Y 6/2

4 SP-SM 15.7 10Y 5/1

VB-SJN15-27

1 SP 25.4 2.5Y 6/1

2 SP 17.9 2.5Y 6/1

3 SP 6.1 2.5Y 5/1

4 SP 4.2 2.5Y 5/1

5 SP 6.5 2.5Y 5/1

6 SP-SM 12.3 2.5Y 5/1

VB-SJSP09-5

1 SP 11 10YR 6/1

2 SP 5 10YR 6/1

3 SP 5 10YR 6/1

VB-SJSP09-36

1 SP 17 10YR 7/1

2 SP 10.3 2 10YR 7/1

3 SP-SM 6 10YR 6/1

4 SP-SM 9 10YR 6/1

USCS: Unified Soil Classification System; CO3%: Carbonate Content

4.3 BORING LOG NOTES

Borings collected in 2009 and 2015 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 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 904-232-1054 or Chief, Geology and Explorations Section at 904-232-1617 at least four (4) working days before the visit.

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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.

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PLATE NO.

ST JOHNS COUNTY CSRM

Vilano & South Ponte Vedra

GEOTECHNICAL

DRAWINGS

NOT FOR

CONSTRUCTION

Vicinity Map

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT

CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

Dwn by:

Ckd by:

Dated:

TAMJLC

JLC 25 Aug 2022

Dsn by:

Legend Fill_Template N-3 Dredge Boundary

0 1 20.5 Miles

Plate 2

Project Location

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

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F

A

B

E

C

D

VB-SJSP09-5

VB-SJN15-27 VB-SJN15-26

VB-SJN15-25

VB-SJN15-24

VB-SJN15-23

VB-SJN15-22

VB-SJN15-21 VB-SJN15-20

VB-SJN15-19

VB-SJN15-18 VB-SJN15-17

VB-SJN15-16

VB-SJN15-15

VB-SJN15-14 VB-SJN15-13

VB-SJN15-12

VB-SJN15-11 VB-SJN15-10

VB-SJN15-09

VB-SJN15-08

VB-SJN15-07VB-SJN15-06

VB-SJN15-05

VB-SJN15-04

VB-SJN15-03

VB-SJN15-02

VB-SJN15-01

VB-SJSP09-36

µ

PLATE NO.

ST JOHNS COUNTY CSRM

Vilano & South

Ponte Vedra

GEOTECHNICAL

DRAWINGS

NOT FOR

CONSTRUCTION

Offshore Sand Source N-3

DEPARTMENT OF THE ARMY

JACKSONVILLE DISTRICT

CORPS OF ENGINEERS

JACKSONVILLE, FLORIDA

Dwn by:

Ckd by:

Dated:

TAMJLC

JLC 25 Aug 2022

Legend !O Vibracore Locations

Dredge Cuts N-3 Dredge Boundary

0 1,000 2,000500 Feet

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 15

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.

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 16

-56.6

-58.6

-60.6

SAND, poorly-graded, mostly fine to medium-grained sand-sized quartz, few medium-grained sand-sized shell, trace silt, weak reaction with HCl, 2.5Y 8/1 white (SP)

At El. -58.0 Ft., mostly fine-grained sand-sized quartz, 2.5Y 6/1 gray

At El. -59.2 Ft., little sand to gravel-sized shell

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, little sand to gravel-sized shell, few silt, weak reaction with HCl, 10Y 5/1 greenish gray (SP-SM) At El. -60.6 Ft., trace shell

SAND, silty, mostly fine-grained sand-sized quartz, some silt, little sand to gravel-sized shell, weak reaction with HCl, 10Y 4/1 dark greenish gray (SM)

From El. -64.7 to -64.9 Ft., very silty sand seam SAND, poorly-graded, mostly fine-grained sand-sized quartz, trace silt, no reaction with HCl, interbedded silt seams, 2.5Y 6/2 light brownish gray (SP)

SILT, inorganic-H, some fine-grained sand-sized quartz, no reaction with HCl, N 5/ gray (MH)

SAND, poorly-graded, mostly fine-grained

-54.6-54.6

-59.9

-62.9

-64.9

-67.3

-69.1

0.0

5.3

8.3

10.3

12.7

14.5

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-SJN15-01

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-SJN15-01

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 600,629 Y = 2,062,772

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

04-08-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

04-08-15

-54.6 Ft.

96 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 17

-74.6 sand-sized quartz, trace silt, no reaction with HCl, interbedded silt seams, 2.5Y 6/2 light brownish gray (SP) At El. -70.5 Ft., some fine-grained sand-sized shell, little silt, strong reaction with HCl At El. -70.6 Ft., mostly fine to medium-grained sand-sized quartz SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, trace shell, weak reaction with HCl, 10Y 5/1 greenish gray (SP-SM) SILT, inorganic-H, some fine-grained sand-sized quartz, no reaction with HCl, N 5/ gray (MH)

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 2.0/2.3 SP*

2 4.0/4.3 SP*

3 6.0/6.3 SP-SM*

*Lab visual classification based on gradation curve

Abbreviations:

-71.6

-72.9

-73.7

-74.6 20.0

17.0

18.3

19.1

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-54.6 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 600,629 Y = 2,062,772

VB-SJN15-01

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 18

-52.7

-54.7

-56.7

-58.7

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

At El. -54.7 Ft., mostly fine to medium-grained sand-sized quartz, trace shell

At El. -56.7 Ft., mostly fine-grained sand-sized quartz, 2.5Y 5/1 gray

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few medium-grained sand-sized shell, few silt, weak reaction with HCl, 2.5Y 5/1 gray (SP-SM) At El. -59.0 Ft., 10Y 5/1 greenish gray From El. -59.9 to -60.5 Ft., sandy shelly clay seam CLAY, lean, little medium-grained sand-sized limestone, little fine-grained sand-sized quartz, few fine-grained sand-sized shell, weak reaction with HCl, 5G 4/1 dark greenish gray (CL)

SAND, clayey, mostly fine-grained sand-sized quartz, little clay, little fine-grained sand-sized shell, weak reaction with HCl, 10Y 7/1 light greenish gray (SC)

-51.7-51.7

-58.7

-60.5

-63.0

0.0

7.0

8.8

11.3

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-SJN15-02

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-SJN15-02

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 601,642 Y = 2,062,879

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

04-08-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

04-08-15

-51.7 Ft.

91 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 19

-71.7

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

1 1.0/1.3 SP*

2 3.0/3.3 SP*

3 5.0/5.3 SP*

4 7.0/7.3 SP-SM*

*Lab visual classification based on gradation curve

Abbreviations:

-69.8

-71.7 20.0

18.1

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-51.7 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 601,642 Y = 2,062,879

VB-SJN15-02

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 20

-55.0

-57.0

-59.0

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

At El. -54.4 Ft., mostly fine-grained sand-sized quartz, 2.5Y 5/1 gray

SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, few fine-grained sand-sized shell, weak reaction with HCl, 2.5Y 5/1 gray (SP-SM)

At El. -59.0 Ft., trace shell

At El. -60.3 Ft., little sand to gravel-sized shell

From El. -60.9 to -61.1 Ft., shelly very clayey sand seam From El. -61.1 to -61.7 Ft., strong reaction with HCl, very clayey sand seam with dissolutioned limestone From El. -61.7 to -61.9 Ft., clayey sand seam From El. -61.9 to -62.0 Ft., slightly shelly clayey sand seam SAND, poorly-graded with clay, mostly fine-grained sand-sized quartz, few clay, trace shell, strong reaction with HCl, 10Y 7/1 light greenish gray (SP-SC)

-53.0-53.0

-56.6

-62.0

0.0

3.6

9.0

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-SJN15-03

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-SJN15-03

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 599,600 Y = 2,062,664

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

03-31-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

03-31-15

-53.0 Ft.

100 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 21

-73.0

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 2.0/2.3 SP*

2 4.0/4.3 SP-SM*

3 6.0/6.3 SP-SM*

*Lab visual classification based on gradation curve

Abbreviations:

-73.0 20.0

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-53.0 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 599,600 Y = 2,062,664

VB-SJN15-03

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 22

-54.3

-56.3

-57.8

SAND, poorly-graded, mostly fine-grained sand-sized quartz, few fine-grained sand-sized shell, trace silt, weak reaction with HCl, 2.5Y 7/1 light gray (SP) At El. -53.8 Ft., few fine to medium-grained sand-sized shell

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

SAND, poorly-graded, mostly fine to medium-grained sand-sized quartz, few fine-grained sand-sized shell, trace silt, weak reaction with HCl, 10Y 5/1 greenish gray (SP) At El. -57.8 Ft., some sand to gravel-sized shell

At El. -59.1 Ft., little sand to gravel-sized shell, N 5/ gray

SILT, inorganic-H, little fine-grained sand-sized quartz, little sand to gravel-sized shell, weak reaction with HCl, N 5/ gray (MH) At El. -60.5 Ft., trace shell, no reaction with HCl

CLAY, lean, some fine-grained sand-sized quartz, trace shell, no reaction with HCl, 10Y 4/1 dark greenish gray (CL)

-52.8-52.8

-55.9

-57.2

-59.9

-62.8

-67.8

0.0

3.1

4.4

7.1

10.0

15.0

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-SJN15-04

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-SJN15-04

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 598,478 Y = 2,063,569

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

03-31-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

03-31-15

-52.8 Ft.

94 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 23

-72.8

SAND, clayey, mostly fine-grained sand-sized quartz, little clay, trace shell, strong reaction with HCl, 2.5Y 7/2 light gray (SC)

At El. -71.6 Ft.

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 1.5/1.8 SP*

2 3.5/3.8 SP-SM*

3 5.0/5.3 SP*

*Lab visual classification based on gradation curve

Abbreviations:

-72.8 20.0

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-52.8 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 598,478 Y = 2,063,569

VB-SJN15-04

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 24

-54.0

-55.5

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

At El. -54.5 Ft., mostly fine-grained sand-sized quartz, 2.5Y 5/1 gray

From El. -56.2 to -56.4 Ft., shelly sand seam SAND, poorly-graded with clay, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, few clay, strong reaction with HCl, 5GY 4/1 dark greenish gray (SP-SC) At El. -57.3 Ft., some fine-grained sand-sized quartz, some sand to gravel-sized shell, N 5/ gray SAND, clayey, mostly fine-grained sand-sized quartz, some sand to gravel-sized shell, some clay, strong reaction with HCl, 5GY 4/1 dark greenish gray (SC) CLAY, fat, little fine-grained sand-sized quartz, few fine gravel-sized shell, weak reaction with HCl, 5G 4/1 dark greenish gray (CH) At El. -60.5 Ft., some sand to gravel-sized shell, few fine-grained sand-sized quartz From El. -61.4 to -61.8 Ft., slightly shelly clay seam CLAY, lean, few fine-grained sand-sized quartz, trace shell, weak reaction with HCl, 5G 4/2 grayish green (CL)

At El. -63.9 Ft., little fine to medium-grained sand-sized shell, 10GY 6/1 greenish gray

SAND, clayey, mostly fine-grained sand-sized quartz, little clay, trace shell, strong reaction with HCl, 10Y 6/1 greenish gray (SC) From El. -65.5 to -65.6 Ft., clay seam

-53.0-53.0

-56.4

-58.0

-59.0

-61.8

-65.1

0.0

3.4

5.0

6.0

8.8

12.1

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-SJN15-05

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-SJN15-05

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 598,582 Y = 2,062,532

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

03-31-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

03-31-15

-53.0 Ft.

97 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 25

-73.0

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 1.0/1.3 SP*

2 2.5/2.8 SP*

*Lab visual classification based on gradation curve

Abbreviations:

-72.4

-73.0 20.0

19.4

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-53.0 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 598,582 Y = 2,062,532

VB-SJN15-05

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 26

-57.7

-60.2

SAND, poorly-graded, mostly fine to medium-grained sand-sized quartz, few medium-grained sand-sized shell, trace silt, strong reaction with HCl, 2.5Y 6/2 light brownish gray (SP)

From El. -57.5 to -57.8 Ft., intermittent silt seams At El. -57.9 Ft., little fine to medium-grained sand-sized shell

At El. -59.4 Ft., little sand to gravel-sized shell, 2.5Y 5/1 gray

At El. -62.4 Ft., little fine to coarse-grained sand-sized shell

SILT, inorganic-H, some fine-grained sand-sized quartz, few fine to medium-grained sand-sized shell, weak reaction with HCl, N 5/ gray (MH)

From El. -65.2 to -65.4 Ft., strong reaction with HCl, sandy very shelly silt seam

At El. -67.6 Ft., little fine-grained sand-sized quartz, trace shell, no reaction with HCl

-55.7-55.7

-63.2

0.0

7.5

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-SJN15-06

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-SJN15-06

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 599,486 Y = 2,063,652

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

04-11-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

04-11-15

-55.7 Ft.

100 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 27

-75.7

SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, N 7/ light 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 2.0/2.3 SP*

2 4.5/4.8 SP*

*Lab visual classification based on gradation curve

Abbreviations:

-70.8

-75.7 20.0

15.1

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-55.7 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 599,486 Y = 2,063,652

VB-SJN15-06

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 28

-56.3

-57.8

SAND, poorly-graded, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, trace silt, weak reaction with HCl, 2.5Y 6/2 light brownish gray (SP)

At El. -54.3 Ft., trace shell

At El. -54.8 Ft., little fine to medium-grained sand-sized shell

At El. -56.3 Ft., mostly fine to medium-grained sand-sized quartz, few medium-grained sand-sized shell At El. -56.9 Ft., 10Y 5/1 greenish gray

At El. -57.8 Ft., mostly fine-grained sand-sized quartz, few fine-grained sand-sized shell

From El. -59.6 to -60.0 Ft., very shelly sand seam SAND, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, few fine-grained sand-sized shell, weak reaction with HCl, 10Y 5/1 greenish gray (SP-SM)

At El. -62.0 Ft., little fine to medium-grained sand-sized shell SILT, inorganic-H, little fine-grained sand-sized quartz, few fine to medium-grained sand-sized shell, weak reaction with HCl, N 5/ gray (MH)

At El. -64.4 Ft., few fine-grained sand-sized quartz, trace shell, no reaction with HCl

-52.3-52.3

-60.0

-62.6

0.0

7.7

10.3

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-SJN15-07

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-SJN15-07

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 600,504 Y = 2,063,760

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

04-11-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

04-11-15

-52.3 Ft.

96 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 29

-72.3

SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, N 7/ light 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 2.0/2.3 SP*

2 4.0/4.3 SP*

3 5.5/5.8 SP*

*Lab visual classification based on gradation curve

Abbreviations:

-68.3

-71.5

-72.3 20.0

16.0

19.2

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-52.3 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 600,504 Y = 2,063,760

VB-SJN15-07

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 30

-56.1

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

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

From El. -60.1 to -60.4 Ft., shelly silty sand seam SAND, silty, mostly fine-grained sand-sized quartz, some silt, few fine-grained sand-sized shell, weak reaction with HCl, 10Y 5/1 greenish gray (SM)

At El. -63.6 Ft., little sand to gravel-sized shell

At El. -64.6 Ft., little fine to medium-grained sand-sized shell

From El. -66.1 to -67.4 Ft., intermittent seams of slightly sandy silt

SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, trace shell, weak reaction with HCl, 10Y 5/1 greenish gray (SP-SM)

SILT, inorganic-H, some fine to medium-grained sand-sized quartz, trace shell, -55.1-55.1

-57.3

-60.4

-67.4

-69.3

0.0

2.2

5.3

12.3

14.2

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-SJN15-08

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-SJN15-08

4. NAME OF DRILLER

AUTO HAMMERLOCATION COORDINATES

See Remarks

X = 601,528 Y = 2,063,898

N/A

Corps of Engineers - CESAJ

20.0 Ft.

Jacksonville District

04-10-15

South Atlantic

N/A

6738-15-5453

St. Johns CSRM, Vilano and SPV

04-10-15

-55.1 Ft.

98 %

SAJ FORM 1836

JUN 02

(Continued)

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 31

-75.1 weak reaction with HCl, N 5/ gray (MH)

At El. -71.0 Ft., 3" silty sand seam At El. -71.2 Ft., little fine to medium-grained sand-sized quartz, few medium-grained sand-sized shell

SAND, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, N 7/ light 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 1.0/1.3 SP*

*Lab visual classification based on gradation curve

Abbreviations:

-72.7

-74.6

-75.1 20.0

17.6

19.5

INSTALLATION

LOCATION COORDINATES

COORDINATE SYSTEM/DATUMPROJECT HORIZONTAL

OFDRILLING LOG (Cont. Sheet)

ELEVATION TOP OF BORING

Boring Designation

St. Johns CSRM, Vilano and SPV

-55.1 Ft.

Jacksonville District

VERTICAL

SHEETS

SHEET

X = 601,528 Y = 2,063,898

VB-SJN15-08

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

SOUTH PONTE VEDRA AND VILANO BEACH

COASTAL STORM RISK MANAGEMENT PROJECT

00 31 32 - Page 32

-52.3

-55.3

-56.3

-57.8

-58.8

SAND, poorly-graded, mostly fine-grained sand-sized quartz, few medium-grained sand-sized shell, trace silt, weak reaction with HCl, 2.5Y 6/2 light brownish gray (SP)

At El. -53.3 Ft., little fine to medium-grained sand-sized shell

At El. -54.2 Ft., few medium-grained sand-sized shell, 2.5Y 6/1 gray

At El. -55.3 Ft., mostly fine to medium-grained sand-sized quartz, little medium-grained sand-sized shell

At El. -56.3 Ft., little sand to gravel-sized shell, 2.5Y 7/1 light gray

At El. -57.8 Ft., mostly fine-grained sand-sized quartz, few fine-grained sand-sized shell At El. -58.3 Ft., 2.5Y 5/1 gray

At El. -58.8 Ft., few medium-grained sand-sized shell SAND, silty, mostly fine-grained sand-sized quartz, little silt, few fine-grained sand-sized shell, weak reaction with HCl, 10Y 5/1 greenish gray (SM)

SAND, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, little fine to medium-grained sand-sized shell, few silt, weak reaction with HCl, 2.5Y 6/2 light brownish gray

(SP-SM)

SAND, silty, mostly fine-grained sand-sized…