RoadwaySoilSurveyReport.pdf

November 2024 353-07-24-01

REPORT OF

ROADWAY SOIL SURVEY

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

WALTON COUNTY, FLORIDA

Prepared For:

PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

4277 LAFAYETTE STREET

MARIANNA, FLORIDA 32446

Prepared By:

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

3676 HARTSFIELD ROAD

TALLAHASSEE, FLORIDA 32303

(850) 386-1253

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

TALLAHASSEE / JACKSONVILLE / GAINESVILLE / OCALA / INVERNESS / FORT MYERS / WEST PALM BEACH

November 15, 2024

EGS File: 353-07-24-01

Panhandle Engineering and Construction, Inc.

4277 Lafayette Street Marianna, FL, 32446

ATTN: John Fielding, P.E.

Project Manager

SUBJECT: Report of Roadway Soil Survey State Road 20 at County Road 83A Intersection Improvements Walton County, Florida

Dear John:

Environmental and Geotechnical Specialists, Inc. (EGS) has completed the Report of Roadway Soil Survey, as authorized by Panhandle Engineering and Construction, Inc.

(PEC), for the proposed roadway widenings associated with planned improvements to the State Road (SR) 20 at County Road (CR) 83A intersection. This Report includes a summary of the subsurface investigation, evaluation of field and laboratory test data, groundwater measurements, estimated “normal” seasonal high groundwater levels, and geotechnical design considerations.

SCOPE OF SERVICES

The Scope of Services authorized for this investigation consisted of the following:

• Installation of 9 soil borings to depths of 5½ to 6½ feet below the ground surface within the proposed roadway widening areas;

• Measuring the depth to groundwater and estimating “normal” seasonal high groundwater levels;

• Laboratory testing of representative soil samples for classification;

• Reviewing the Natural Resources Conservation Service (NRCS) Soil Survey for the project area;

• Development of geotechnical design considerations; and,

• Preparation of this Report.

SITE LOCATIONS AND EXISTING CONDITIONS

The project site is located in southern Walton County, Florida, just west of Freeport as shown in the Project Location Map that has been provided as Figure 1.

Roadway Soil Survey SR 20 at CR 83A Intersection Improvements

To facilitate review of the existing site conditions, United States Geological Survey (USGS) Topographic Map contours have been superimposed on aerial imagery of the project site which has been provided as Figure 2. As can be seen in this Figure, the USGS ground surface contours indicate that the general topography around the SR 20 and CR 83A is slightly undulating with the ground surface elevations (EL) between about EL 65 feet to EL 69 feet, as referenced to the North American Vertical Datum of 1988

(NAVD 88).

As part of this investigation, EGS reviewed the NRCS Soil Survey for the project area, which has also been superimposed on the aerial image included as Figure 2. The NRCS Soil Survey reports that the soils within the upper approximately 6½ feet are Sands. The “normal” seasonal high groundwater is reported to range from a depth of about 3½ feet to greater than 6 feet below the ground surface. The pH of the soils is reported to range from 4.5 to 6.0 which, according to Table 1.3.2-1 of the Florida Department of Transportation’s (FDOT) Structure Design Guidelines, makes the soils Extremely Aggressive with respect to corrosion of steel and concrete.

PROPOSED CONSTRUCTION

Based on information provided by PEC, EGS understands that the associated improvements to the intersection include the widening of the lanes to provide 2 right turn lanes. Additionally, the improvements include a turnout area on the north side of SR 20 at its intersection with CR 83A. The widening construction is expected to involve minimal cutting and filling with proposed pavement sections consisting of 12 inches of Type B Stabilized Subgrade, Optional Base Group 9 (e.g., 10 inches of Limerock Base), and 3 inches of asphaltic concrete.

SUBSURFACE INVESTIGATION

The subsurface investigation outlined in this Report was conducted in October of 2024.

For this investigation, Dylan Godden, E.I. served as the Staff Geotechnical Engineer and Craig Dunkelberger, P.E. served as the Senior Geotechnical Engineer of Record.

Additional project oversight and Quality Assurance/Quality Control (QA/QC) was provided by Chandra Samakur, P.E., Senior Engineer.

Geotechnical Investigation - EGS installed a total of 9 soil borings for the subsurface investigation included in this Report. The soil borings were installed to a depth of about 5½ to 6½ feet below the existing ground surface and were labeled SB-1405 through SB- 1412 for borings along SR 20. Borings installed along CR 83A were installed to a depth of about 6½ feet below the existing ground surface and were labeled SB-103 through SB-105. The soil boring labels identify the approximate survey baseline station closest to the soil boring location. The approximate soil boring locations are shown on Figure 2 with a summary of the location data included in TABLE 1.

The soil borings were installed using hand-auger equipment. Hand-auger samples were collected on 1-foot vertical intervals coupled with static hand Cone Penetrometer Index (CPI) tests. The CPI values were converted to equivalent SPT “N” values using the correlation N=CPI/4. Samples of the subsoils were visually classified in the field by EGS personnel, placed in sealed plastic bags, and then transported to the EGS laboratory for classification testing.

The testing performed for this investigation included water content and grain-size distribution testing. The soil samples were classified with respect to the American Association of State Highway and Transportation Officials (AASHTO) soil classification system. The laboratory testing results have been summarized in the Roadway Soil Survey plan sheet included in APPENDIX A. Detailed soil data for individual borings are available on the Soil Boring Logs and Soil Classification Data sheets provided in APPENDICES B and C, respectively.

SUBSURFACE CONDITIONS

Soils - EGS assigned STRATUM number designations to the materials encountered based on the designations outlined in the FDOT Standard Plans Index 120-001. The following are brief descriptions of each STRATUM:

• STRATUM 1 consists of Fine Sand (A-3), Silty Fine Sand (A-2-4), and Sandy Limestone Base (A-3, A-2-4) containing less than 15% passing the U.S. No. 200 sieve. The soil in this STRATUM represents FDOT “SELECT” soil and is suitable for use and reuse within the roadway embankment and subgrade

• STRATUM 2 is a Silty Fine Sand or Sandy Limestone Base (A-2-4) containing 15% or more passing the U.S. No. 200 sieve). This STRATUM also represents a FDOT “SELECT” soil. The soils in this STRATUM are suitable for use within roadway embankment; however, they are likely to retain moisture and may be difficult to dry and compact given their higher fines content.

Groundwater - Groundwater was not encountered within the vertical reaches of the borings at the time of the field investigation. A summary of the measured groundwater levels and estimated “normal” seasonal high groundwater levels are included in

TABLE 1.

It should be recognized that the groundwater data reflects limited measurements and is therefore considered to be approximate. Fluctuations in groundwater levels should be anticipated throughout the year in response to rainfall, surrounding development and changes to drainage from urbanization.

NRCS Soil Survey - The soils encountered in this investigation are generally consistent with the subsurface conditions reported in the NRCS Soil Survey for the area. It should be noted that the NRCS Soil Survey mapping is an approximation of likely soils that naturally exist within the area and do not account for roadway embankment fill, ditches, or other such features associated with development. Variations in soil properties will occur when comparing data from the NRCS Soil Survey and data obtained in the field.

Pertinent information from the NRCS data tables has been summarized in TABLE 2.

Copies of select data tables from the NRCS Soil Survey have been provided as

APPENDIX D.

GEOTECHNICAL DESIGN RECOMMENDATIONS

To aid in the geotechnical evaluation, EGS has estimated the bottom of the roadway base to be 12 inches below the Proposed Grade Line (PGL) shown in the plans provided by

PEC.

Plastic Soils - No FDOT “PLASTIC” soils were encountered within 24 inches of the bottom of the base course. Therefore, no over-excavation for removal for “PLASTIC” soils is needed.

Organic Soils - No FDOT “ORGANIC” soils were encountered in the soil borings included in this investigation. Therefore, no over-excavation for removal for “ORGANIC” soils is needed.

Groundwater - Groundwater can have a significant impact on construction and long-term performance of the roadway. It is recommended in the FDOT Flexible Pavement Manual that 3 feet of clearance be maintained between “normal” seasonal high groundwater and the roadway/shoulder base.

As shown in TABLE 1 and in the “Generalized” Soil Profiles, the estimated “normal” seasonal high groundwater levels are expected to be more than 3 feet below the bottom of the base course. Therefore, no special considerations are needed with respect to groundwater.

PLANS PREPARATION

EGS recommends the following information be included in the Plans:

• Roadway Soil Survey plan sheet provided in APPENDIX A

• Soil Boring Profiles plotted on the Plan Cross-Sections. A separate file has been provided for this purpose.

CLOSURE

The data and results presented in this Report of Roadway Soil Survey are intended for the use of Panhandle Engineering and Construction, Inc. for the proposed roadway widenings, identified herein. This data may not be used without the expressed written consent of Panhandle Engineering and Construction, Inc. This Report is not intended for any other use and will likely not be applicable. This Report shall not be reproduced, except in full, without the written approval of Environmental and Geotechnical Specialists, Inc. The data and recommendations presented in this Report are based on the borings made at the specific locations and depths noted. Subsurface conditions at other locations may vary significantly from those presented herein. Should data become available which is different from the data presented herein, Environmental and Geotechnical Specialists, Inc. requests the opportunity to review the data and make any modifications to the design recommendations which may be appropriate.

If you have any questions concerning the information contained in this Report, please do not hesitate to call me at (850) 536-8359.

Environmental & Geotechnical Specialists, Inc.

Certificate of Authorization: 6222

Craig E. Dunkelberger, P.E.

Senior Geotechnical Engineer FL P.E. No.: 49932

THIS ITEM HAS BEEN DIGITALLY SIGNED AND SEALED BY

CRAIG E. DUNKELBERGER ON THE DATE ADJACENT TO THE SEAL.

PRINTED COPIES OF THIS DOCUMENT ARE NOT CONSIDERED SIGNED

AND SEALED AND THE SIGNATURE MUST BE VERIFIED ON ANY

ELECTRONIC COPIED.

TABLES

BORING BORING GROUND STATION 3 OFFSET 3

LABEL DEPTH 1 SURFACE

ELEVATION 2

DEPTH 1 ELEVATION 2 DEPTH 1 ELEVATION 2

SB-1405 5.5 66.2 1405+63 25 RIGHT > 5.5 < 60.7 > 5.5 < 60.7

SB-1406 6.5 67.5 1406+57 25 RIGHT > 6.5 < 61.0 > 6.5 < 61.0

SB-1407 6.5 68.3 1407+64 26 RIGHT > 6.5 < 61.8 > 6.5 < 61.8

SB-1408 6.5 68.4 1408+65 26 RIGHT > 6.5 < 61.9 > 6.5 < 61.9

SB-1409 6.5 67.9 1409+64 29 RIGHT > 6.5 < 61.4 > 6.5 < 61.4

SB-1412 6.5 65.8 1412+46 31 LEFT > 6.5 < 59.3 > 6.5 < 59.3

SB-103 6.5 66.5 103+39 22 RIGHT > 6.5 < 60.0 > 6.5 < 60.0

SB-104 6.5 65.9 104+37 22 RIGHT > 6.5 < 59.4 > 6.5 < 59.4

SB-105 6.5 65.8 105+36 22 RIGHT > 6.5 < 59.3 > 6.5 < 59.3

NOTES: 1. DEPTHS MEASURED BELOW EXISTING GROUND SURFACE.

NOTES 2. ELEVATIONS ARE APPROXIMATE AND WERE ESTIMATED USING DESIGN FILES PROVIDED BY PANHANDLE ENGINEERING, INC.

NOTES 3. STATION AND OFFSET REFERENCE BASELINE SURVEY SR 20 AND CR 83A BASED ON ELECTRONIC FILES

NOTES PROVIDED BY PANHANDLE ENGINEERING, INC.

TABLE 1

SOIL BORING LOCATION AND GROUNDWATER DATA

ROADWAY SOIL SURVEY

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

WALTON COUNTY, FLORIDA

SOIL BORINGS - RIGHT TURN LANE (BASELINE SURVEY SR 20)

SOIL BORINGS - RIGHT TURN LANE (BASELINE SURVEY CR 83A)

(FEET) (FEET)(FEET) (FEET)(FEET) (FEET)

MEASURED GROUNDWATER

ESTIMATED "NORMAL"

SEASONAL HIGH

GROUNDWATER

(FEET) (FEET)

SOIL BORING - TURNOUT (BASELINE SURVEY SR 20)

NRCS SOIL

REFERENCE

NUMBER

MATERIAL

NAME DEPTH 1 MATERIAL

DESCRIPTION REACTION

DEPTH TO

SEASONAL HIGH

GROUNDWATER

(INCHES) (FEET)

0 - 6 SAND SP-SM A-3, A-2-4 4.5 - 6.0

6 - 67 SAND SP-SM A-3, A-2-4 4.5 - 6.0

67 - 80 SAND SP-SM, SP A-1-b, A-3, A-2-4 4.5 - 6.0

0 - 7 SAND SP-SM, SM A-3, A-2-4 4.5 - 6.0

7 - 80 SAND SP-SM, SM A-3, A-2-4 4.5 - 6.0

NOTES: 1. BASED ON THE NRCS SOIL SURVEY REPORT FOR WALTON COUNTY, FLORIDA.

NOTES: 2. SEE APPENDIX D FOR DETAILED NRCS SURVEY INFORMATION.

HIGH 3.5 - 6.0

HIGHLOW > 6.0

12 FOXWORTH SAND,

0 TO 5 PERCENT SLOPES

17 LAKELAND SAND,

0 TO 5 PERCENT SLOPES

UNCOATED

STEEL

LOW

CONCRETEUNIFIED AASHTO (pH)

TABLE 2

NRCS SOIL SURVEY DATA

ROADWAY SOIL SURVEY

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

MATERIAL

CLASSIFICATION

CORROSION

POTENTIAL

FIGURES

DRAWN:

D. GODDEN, E.I.

CHECKED:

A. CRAIG, E.I.

ENVIRONMENTAL AND GEOTECHNICAL

SPECIALISTS, INC.

TALLAHASSEE, FLORIDA 32303

OFFICE #: (850) 386-1253

TITLE:

PROJECT LOCATION MAP

ROADWAY SOIL SURVEY

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

ENGINEER:

C. DUNKELBERGER, P.E.

CLIENT:

PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

PROJ. NO.:

353-07-24-01

DATE:

NOVEMBER 2024

FIGURE NO.:

PROJECT LOCATION

NOT TO SCALE

1410 1411 1412 1413 1409140814071406

1405 A

A A A A A

A

A

A

SR 20

CR

A (W

ES

T B

AY

LO

OP

R

OA

D)

LOOP LANE

SB-103

SB-104

SB-105

SB-1412

SB1407 SB-1409SB-1408SB-1406SB-1405

62 66

60Legend A Approximate Soil Boring Location

Baseline Survey SR 20 Baseline Survey CR 83A USGS Topographic Contours (2-feet)

NRCS Map Unit Symbol, Map Unit Name 12, Foxworth sand, 0 to 5 percent slopes 17, Lakeland Sand, 0 to 5 percent slopes

PREPARED:

ENGINEER:

CHECKED:

PROJ. NO.:

SCALE: DATE:

FIGURE NO.:

ENVIRONMENTAL AND GEOTECHNICAL

SPECIALISTS, INC

3676 HARTSFIELD ROAD

TALLAHASSEE, FLORIDA 32303

OFFICE #: (850) 386-1253

NOVEMBER 2024

AERIAL VIEW MAP

ROADWAY SOIL SURVEY

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

WALTON COUNTY, FLORIDA

A. CRAIG, E.I.

D. GODDEN, E.I.

D. GODDEN, E.I.

C. DUNKELBERGER, P.E. 353-07-24-01

REVISED:

AS SHOWN

0 60

Feet

COLOR DEPTH TO SHWT (FEET)

YELLOW 3.0 to 6.0

BROWN > 6.0

ROADWAY "GENERALIZED" SOIL PROFILES

RIGHT TURN LANE SR 20 RIGHT TURN LANE CR 83A

TURNOUT SR 20

ROADWAY "GENERALIZED" SOIL PROFILES

RIGHT TURN LANE SR 20 RIGHT TURN LANE CR 83A

TURNOUT SR 20

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

1405+63

SB-1405

1406+57

SB-1406

1407+64

SB-1407

1408+65

SB-1408

1409+64

SB-1409

1412+46

SB-1412

REVISED:

CHECKED:

ENGINEER:

PROJ. NO.:

SCALE:

FIGURE NO.:

DATE:AS SHOWN

PREPARED:

SPECIALISTS, INC.

ENVIRONMENTAL AND GEOTECHNICAL

3353-07-24-01

OFFICE #: (850) 386-1253

TALLAHASSEE, FLORIDA 32303

3676 HARTSFIELD ROAD

D. GODDEN, E.I.

D. GODDEN, E.I.

WALTON COUNTY, FLORIDA

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

ROADWAY SOIL SURVEY

"GENERALIZED" SOIL PROFILES

C. DUNKELBERGER, P.E.

A. CRAIG, E.I.

NOVEMBER 2024

103+39

SB-103

104+37

SB-104

105+36

SB-105

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

STA.:

BOR.:

1405+63

SB-1405

1406+57

SB-1406

1407+64

SB-1407

1408+65

SB-1408

1409+64

SB-1409

1412+46

SB-1412

REVISED:

CHECKED:

ENGINEER:

PROJ. NO.:

SCALE:

FIGURE NO.:

DATE:AS SHOWN

PREPARED:

SPECIALISTS, INC.

ENVIRONMENTAL AND GEOTECHNICAL

3353-07-24-01

OFFICE #: (850) 386-1253

TALLAHASSEE, FLORIDA 32303

3676 HARTSFIELD ROAD

D. GODDEN, E.I.

D. GODDEN, E.I.

WALTON COUNTY, FLORIDA

SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

ROADWAY SOIL SURVEY

"GENERALIZED" SOIL PROFILES

C. DUNKELBERGER, P.E.

A. CRAIG, E.I.

NOVEMBER 2024

103+39

SB-103

104+37

SB-104

105+36

SB-105

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LEGEND

MEASURED GROUNDWATER

GROUNDWATER NOT ENCOUNTEREDGNE

≥15% PASSING #200 SIEVE

SILTY FINE SAND (A-2-4)GROUP SYMBOL

AASHTO CLASSIFICATION

(A-3)

APPROXIMATE BOTTOM OF BASE

PROPOSED GRADE LINE (PGL)

EXISTING GROUND SURFACE AT PGL

GNE

GNE

GNE GNE

GNE

GNE

GNE

GNE

GRADE LINE

PROPOSED

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

FINE SAND (A-3)

GRADE LINE

PROPOSED

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

GRADE LINE

PROPOSED

NOTES

7.

6.

5.

4.

3.

2.

1.

ESTIMATED "NORMAL" SEASONAL HIGH GROUNDWATER IS BELIEVED TO BE BELOW THE DEPTHS OF THE SOIL BORINGS.

PGL LINE FROM ROADWAY PROFILES ON PLANS PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

ON PLANS PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

EXISTING GROUND SURFACE ELEVATION ESTIMATED USING ROADWAY CROSS-SECTIONS

GROUND SURFACE ELEVATIONS BASED ON FILES PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

NUMBERS TO RIGHT OF BORING INDICATE SPT N-VALUES OR EQUIVALENT.

SEE SOIL CLASSIFICATION DATA SHEETS FOR DETAILED MATERIAL PROPERTIES.

NUMBERS IN CENTER OF BORINGS INDICATE THE STRATUM NUMBER.

SANDY LIMESTONE BASE (A-3)SANDY LIMESTONE BASE (A-3)

≥15% PASSING #200 SIEVE

SANDY LIMESTONE BASE (A-2-4)

<15% PASSING #200 SIEVE

SANDY LIMESTONE BASE (A-2-4)

GNE

LEGEND

MEASURED GROUNDWATER

GROUNDWATER NOT ENCOUNTEREDGNE

≥15% PASSING #200 SIEVE

SILTY FINE SAND (A-2-4)GROUP SYMBOL

AASHTO CLASSIFICATION

(A-3)

APPROXIMATE BOTTOM OF BASE

PROPOSED GRADE LINE (PGL)

EXISTING GROUND SURFACE AT PGL

GNE

GNE

GNE GNE

GNE

GNE

GNE

GNE

GRADE LINE

PROPOSED

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

FINE SAND (A-3)

GRADE LINE

PROPOSED

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

ESTIMATED 12 INCHES BELOW PGL

APPROXIMATE BOTTOM OF BASE

GRADE LINE

PROPOSED

NOTES

7.

6.

5.

4.

3.

2.

1.

ESTIMATED "NORMAL" SEASONAL HIGH GROUNDWATER IS BELIEVED TO BE BELOW THE DEPTHS OF THE SOIL BORINGS.

PGL LINE FROM ROADWAY PROFILES ON PLANS PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

ON PLANS PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

EXISTING GROUND SURFACE ELEVATION ESTIMATED USING ROADWAY CROSS-SECTIONS

GROUND SURFACE ELEVATIONS BASED ON FILES PROVIDED BY PANHANDLE ENGINEERING AND CONSTRUCTION, INC.

NUMBERS TO RIGHT OF BORING INDICATE SPT N-VALUES OR EQUIVALENT.

SEE SOIL CLASSIFICATION DATA SHEETS FOR DETAILED MATERIAL PROPERTIES.

NUMBERS IN CENTER OF BORINGS INDICATE THE STRATUM NUMBER.

SANDY LIMESTONE BASE (A-3)SANDY LIMESTONE BASE (A-3)

≥15% PASSING #200 SIEVE

SANDY LIMESTONE BASE (A-2-4)

<15% PASSING #200 SIEVE

SANDY LIMESTONE BASE (A-2-4)

GNE

APPENDIX A

GEOTECHNICAL PLAN SHEETS

STATE OF FLORIDA

DATE OF SURVEY: OCTOBER 2024

DEPARTMENT OF TRANSPORTATION

DISTRICT: THREE

SURVEY MADE BY: ENVIRONMENTAL AND GEOTECHNICAL ROAD NO.: SR 20 / CR 83A

SPECIALISTS, INC. MATERIALS AND RESEARCH COUNTY: WALTON

SUBMITTED BY: C. DUNKELBERGER, P.E.

PROJECT NAME: SR 20 AT CR 83A INTERSECTION IMPROVEMENTS

FINANCIAL PROJECT ID: ---

CROSS SECTION SOIL SURVEY FOR THE DESIGN OF ROADS

SR 20 SURVEY BEGINS STA.: 1405+61 SR 20 SURVEY ENDS STA.: 1412+46

CR 83A SURVEY BEGINS STA.: 103+40 CR 83A SURVEY ENDS STA.: 105+40

REFERENCE: BASELINE SURVEY SR 20

REFERENCE:BASELINE SURVEY CR 83A

CONTENT

ORGANIC

CONTENT

MOISTURE

% PASS

SIEVE ANALYSIS RESULTS

LIMITS (%)

ATTERBERG

NO.

STRATUM

TESTS

NO. OF

ORGANIC

TESTS

NO. OF

MOISTURE

TESTS

NO. OF

MESH

MESH

MESH

MESH

MESH

TESTS

NO. OF

LIMIT

LIQUID

INDEX

PLASTIC

GROUP

AASHTO

COLOR DESCRIPTION

1 -- -- -- -- 6 82-100 59-76 22-35 11-17 8-11 -- -- -- A-2-4

A-3, BROWN, GRAY

(<15% PASSING #200 SIEVE)

SANDY LIMESTONE BASE

FINE SAND, SILTY FINE SAND,

2 -- -- -- -- 3 89-99 70-88 51-73 32-52 20-32 -- -- -- A-2-4 BROWN, GRAY

(≥15% PASSING #200 SIEVE)

SANDY LIMESTONE BASE

SILTY FINE SAND,

EMBANKMENT AND SUBGRADE MATERIAL

STRATA BOUNDARIES ARE APPROXIMATE. MAKE FINAL CHECK AFTER GRADING.

GNE - GROUNDWATER NOT ENCOUNTERED

STRATUM NOTES

1.STRATA BOUNDARIES ARE APPROXIMATE AND REPRESENT SOIL STRATA AT EACH BORING ONLY. ANY SUBSOIL

CONNECTING LINES ARE FOR ESTIMATING ONLY AND DO NOT INDICATE ACTUAL STRATUM LIMITS. SUBSURFACE

VARIATIONS BETWEEN BORINGS SHOULD BE ANTICIPATED.

2.STRATA 1 IS A "SELECT" SOIL.

3.STRATUM 2 IS A "SELECT" SOIL WITH >15% FINES. DUE TO THE HIGH FINES CONTENT, STRATUM 2 WILL RETAIN

MOISTURE AND MAY BE DIFFICULT TO COMPACT WHEN WET.

DATE DESCRIPTION

REVISIONS

DATE DESCRIPTION

NO.

SHEETSTATE OF FLORIDA

DEPARTMENT OF TRANSPORTATION

ROAD NO. FINANCIAL PROJECT IDCOUNTY

WALTON

SR 2032303 FLORIDA, TALLAHASSEE

EGS, INC.

49932LICENSE NUMBER:

CRAIG E. DUNKELBERGER, P.E.

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E A

L E

D U

N D

E R

R U

L E

G

-2

.0

F

.A .C

ENGINEER OF RECORD

ROADWAY SOIL SURVEY

SOILSURVEYSHEET : J:\EGS Projects\FDOT\2201801\geotechnical\SSUVRD01.dgn

9:30:17 AM11/12/2024dgodden

APPENDIX B

SOIL BORING LOGS

0.5

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

BROWN

SILTY FINE SAND

LOOSE

BROWN

SILTY FINE SAND

MEDIUM DENSE

BROWN

SILTY FINE SAND

LOOSE

BROWN

SILTY FINE SAND

A-2-4

A-2-4

A-2-4

A-2-4

A-2-4

-200%=23

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 103+39

PROJECT NO.: 353-07-24-01 OFFSET: 22 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 66.5

BORING NO.: SB-103 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it e

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

BROWN

FINE SAND

LOOSE

BROWN

FINE SAND

A-3

A-3

A-3

-200%=9

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 104+37

PROJECT NO.: 353-07-24-01 OFFSET: 22 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 65.9

BORING NO.: SB-104 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

GRAY

SILTY FINE SAND

LOOSE

GRAY

SILTY FINE SAND

A-2-4

A-2-4

A-2-4

-200%=20

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 105+36

PROJECT NO.: 353-07-24-01 OFFSET: 22 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 65.8

BORING NO.: SB-105 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

GRAY

SILTY FINE SAND WITH ASPHALT

FRAGMENTS

MEDIUM DENSE

BROWN

SILTY FINE SAND

LOOSE

BROWN

SILTY FINE SAND

A-2-4

A-2-4

A-2-4

A-2-4

-200%=24

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1405+63

PROJECT NO.: 353-07-24-01 OFFSET: 25 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 66.2

BORING NO.: SB-1405 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 5.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

BROWN

FINE SAND

LOOSE

BROWN

FINE SAND

A-3

A-3

A-3

-200%=9

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1406+57

PROJECT NO.: 353-07-24-01 OFFSET: 25 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 67.5

BORING NO.: SB-1406 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

BROWN

FINE SAND

LOOSE

BROWN

FINE SAND

A-3

A-3

A-3

-200%=8

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1407+64

PROJECT NO.: 353-07-24-01 OFFSET: 26 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 68.3

BORING NO.: SB-1407 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

GRAY

SILTY FINE SAND

MEDIUM DENSE

BROWN

SILTY FINE SAND

LOOSE

BROWN

SILTY FINE SAND

A-2-4

A-2-4

A-2-4

-200%=12

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1408+65

PROJECT NO.: 353-07-24-01 OFFSET: 26 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 68.4

BORING NO.: SB-1408 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

GRAY

SILTY FINE SAND

LOOSE

GRAY

SILTY FINE SAND

A-2-4

A-2-4

A-2-4

-200%=11

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1409+64

PROJECT NO.: 353-07-24-01 OFFSET: 29 FEET RIGHT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 67.9

BORING NO.: SB-1409 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

1.5

SANDY LIMESTONE BASE

MEDIUM DENSE

GRAY

FINE SAND

MEDIUM DENSE

BROWN

FINE SAND

LOOSE

BROWN

FINE SAND

A-3

A-3

A-3

-200%=9

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT HAMMER TYPE: CPI

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, STATIONING: 1412+46

PROJECT NO.: 353-07-24-01 OFFSET: 31 FEET LEFT

PROJECT LOCATION: WALTON COUNTY, FLORIDA ELEVATION (FEET): 65.8

BORING NO.: SB-1412 DATE: 10/09/2024

DRILLER: D. CANCEL-SCOTT FLUID LOSS: N/A

DEPTH TO WATER: INITIAL: GNE @ 6.5' 24 HR: N/M CAVING: NONE

NOTES: N/A MEANS NOT AVAILABLE

N/M MEANS NOT MEASURED

D E

P T

H

M E

T E

R S

D E

P T

H

F E

E T

S A

M P

L E

S Y

M B

O L

DESCRIPTION AASHTO

TEST

RESULTS

Wc

Wc (%)

N

N-Value

T h is i n fo rm a ti o n p e rt a in s o n ly t o t h is b o ri n g a n d s h o u ld n o t b e i n te rp re te d a s b e in g i n d ic it iv e o f th e s it

APPENDIX C

SOIL CLASSIFICATION DATA

0.0-0.5 11 -- A-2-4 2 SANDY LIMESTONE BASE

1.0-1.5 10 10 A-2-4 2 MEDIUM DENSE

BROWN

SILTY FINE SAND

2.0-2.5 13 100 99 97 88 73 52 23 5 A-2-4 2 LOOSE

BROWN

SILTY FINE SAND

3.0-3.5 6 10 A-2-4 2 MEDIUM DENSE

BROWN

SILTY FINE SAND

4.0-4.5 6 8 A-2-4 2 MEDIUM DENSE

BROWN

SILTY FINE SAND

5.0-5.5 7 9 A-2-4 2 MEDIUM DENSE

BROWN

SILTY FINE SAND

6.0-6.5 7 7 A-2-4 2 LOOSE

BROWN

SILTY FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-103 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

No.

Description

0.0-0.5 10 -- A-2-4 1 SANDY LIMESTONE BASE

1.0-1.5 11 9 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

2.0-2.5 9 100 99 98 76 32 14 9 10 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

3.0-3.5 5 10 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 7 9 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

5.0-5.5 6 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

6.0-6.5 7 7 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-104 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 8 -- A-2-4 2 SANDY LIMESTONE BASE

1.0-1.5 8 98 97 95 70 60 44 20 12 A-2-4 2 SANDY LIMESTONE BASE

2.0-2.5 6 10 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

3.0-3.5 4 9 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

4.0-4.5 5 9 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

5.0-5.5 5 8 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

6.0-6.5 6 7 A-3 1 LOOSE

GRAY

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-105 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 5 -- A-2-4 2 SANDY LIMESTONE BASE

1.0-1.5 12 89 89 88 76 51 32 24 9 A-2-4 2 MEDIUM DENSE

GRAY

SILTY FINE SAND WITH ASPHALT

FRAGMENTS

2.0-2.5 6 10 A-2-4 2 MEDIUM DENSE

GRAY

SILTY FINE SAND WITH ASPHALT

FRAGMENTS

3.0-3.5 6 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 5 7 A-3 1 LOOSE

BROWN

FINE SAND

5.0-5.5 5 7 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1405 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 4 -- A-2-4 1 SANDY LIMESTONE BASE

1.0-1.5 6 100 100 95 59 22 11 9 10 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

2.0-2.5 5 12 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

3.0-3.5 5 10 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 5 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

5.0-5.5 5 7 A-3 1 LOOSE

BROWN

FINE SAND

6.0-6.5 4 5 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1406 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 4 -- A-3 1 SANDY LIMESTONE BASE

1.0-1.5 4 86 82 79 62 28 13 8 12 A-3 1 SANDY LIMESTONE BASE

2.0-2.5 4 10 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

3.0-3.5 3 9 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 3 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

5.0-5.5 3 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

6.0-6.5 3 7 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1407 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 5 -- A-3 1 SANDY LIMESTONE BASE

1.0-1.5 4 12 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

2.0-2.5 8 100 99 98 72 31 16 10 9 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

3.0-3.5 6 8 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 5 7 A-3 1 LOOSE

BROWN

FINE SAND

5.0-5.5 5 4 A-3 1 LOOSE

BROWN

FINE SAND

6.0-6.5 4 4 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1408 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 10 -- A-2-4 1 SANDY LIMESTONE BASE

1.0-1.5 9 92 91 88 67 35 17 11 12 A-2-4 1 SANDY LIMESTONE BASE

2.0-2.5 10 12 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

3.0-3.5 5 12 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

4.0-4.5 5 9 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

5.0-5.5 5 8 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

6.0-6.5 4 5 A-3 1 LOOSE

GRAY

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1409 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

0.0-0.5 7 -- A-2-4 1 SANDY LIMESTONE BASE

1.0-1.5 6 9 A-2-4 1 SANDY LIMESTONE BASE

2.0-2.5 6 100 100 99 66 25 12 9 10 A-3 1 MEDIUM DENSE

GRAY

FINE SAND

3.0-3.5 6 9 A-3 1 MEDIUM DENSE

BROWN

FINE SAND

4.0-4.5 6 7 A-3 1 LOOSE

BROWN

FINE SAND

5.0-5.5 7 7 A-3 1 LOOSE

BROWN

FINE SAND

6.0-6.5 6 4 A-3 1 LOOSE

BROWN

FINE SAND

ENVIRONMENTAL AND GEOTECHNICAL SPECIALISTS, INC.

SOIL CLASSIFICATION DATA

PROJECT: SR 20 AT CR 83A INTERSECTION IMPROVEMENT

CLIENT: PANHANDLE ENGINEERING AND CONSTRUCTION, INC. PROJECT NO.: 353-07-24-01

BORING: SB-1412 LOCATION: WALTON COUNTY, FLORIDA

DEPTH

(FEET)

Wc

-4

-10

-20

-40

-60

-100

-200

LL PI

Org.

N Value

AASHTO

Mat.

APPENDIX D

NRCS SOIL SURVEY

Chemical Soil Properties–Walton County, Florida

Map symbol and soil name Depth Cation-exchange capacity

Effective cation-exchange capacity

Soil reaction Calcium carbonate

Gypsum Salinity Sodium adsorption ratio

In meq/100g meq/100g pH Pct Pct mmhos/cm

12—Foxworth sand, 0 to 5 percent slopes

Foxworth 0-6 — 0.4-4.1 4.5-6.0 0 0 0.0-2.0 0

6-67 — 0.1-2.4 4.5-6.0 0 0 0.0-2.0 0

67-80 — 0.1-1.9 4.5-6.0 0 0 0.0-2.0 0

17—Lakeland sand, 0 to 5 percent slopes

Lakeland 0-7 — 0.4-3.2 4.5-6.0 0 0 0.0-2.0 0

7-80 — 0.1-1.9 4.5-6.0 0 0 0.0-2.0 0

Custom Soil Resource Report

Absence of an entry indicates that the data were not estimated. The asterisk '*' denotes the representative texture; other possible textures follow the dash. The criteria for determining the hydrologic soil group for individual soil components is found in the National Engineering Handbook, Chapter 7 issued May 2007(http://directives.sc.egov.usda.gov/ OpenNonWebContent.aspx?content=17757.wba). Three values are provided to identify the expected Low (L), Representative Value (R), and High (H).

Engineering Properties–Walton County, Florida

Map unit symbol and soil name

Pct. of map unit

Hydrolo gic group

Depth USDA texture Classification Pct Fragments Percentage passing sieve number— Liquid limit

Plasticit y index

Unified AASHTO >10 inches

3-10 inches

4 10 40 200

In L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H

12—Foxworth sand, 0 to 5 percent slopes

Foxworth 95 A 0-6 Sand SP-SM A-3, A-2-4 0- 0- 0 0- 0- 0 100-100 -100

100-100 -100

60-80-1

5- 9- 12 0-0 -17 NP-0 -2

6-67 Sand SP-SM A-3, A-2-4 0- 0- 0 0- 0- 0 100-100 -100

100-100 -100

60-80-1

5- 9- 12 0-0 -16 NP-0 -1

67-80 Sand SP-SM, SP

A-1-b, A-2-4, A-3

0- 0- 0 0- 0- 0 100-100 -100

100-100 -100

50-75-1

1- 7- 12 0-0 -0 NP

17—Lakeland sand, 0 to 5 percent slopes

Lakeland 80 A 0-7 Sand SP-SM, SM

A-2-4, A-3 0- 0- 0 0- 0- 0 100-100 -100

100-100 -100

75-78-

9-11- 15 0-0 -17 NP-0 -2

7-80 Sand SP-SM, SM

A-3, A-2-4 0- 0- 0 0- 0- 0 100-100 -100

100-100 -100

75-77-

8-10- 14 0-0 -0 NP

Physical Soil Properties–Walton County, Florida

Map symbol and soil name

Depth Sand Silt Clay Moist bulk density

Saturated hydraulic conductivity

Available water capacity

Linear extensibility

Organic matter

Erosion factors

Wind erodibility group

Wind erodibility index Kw Kf T

In Pct Pct Pct g/cc micro m/sec In/In Pct Pct

12—Foxworth sand, 0 to 5 percent slopes

Foxworth 0-6 94-94- 94 1- 4- 5 1- 1- 5 1.65-1.67 42.00-141.00 0.05-0.10 0.0-0.5 0.5-2.0 .02 .02 5 1 220

6-67 93-93- 93 2- 5- 6 1- 2- 5 1.68-1.71 42.00-141.00 0.05-0.10 0.0-0.3 0.0-0.5 .02 .02

67-80 97-97- 97 0- 3- 3 1- 1- 4 1.67-1.69 42.00-141.00 0.02-0.08 0.0-0.2 0.0-0.5 .02 .02

17—Lakeland sand, 0 to 5 percent slopes

Lakeland 0-7 85-93- 94 0- 5- 13 1- 2- 8 1.62-1.73 42.00-141.00 0.05-0.09 0.0-0.4 0.5-1.0 .02 .02 5 1 220

7-80 85-94- 95 0- 4- 11 1- 2- 6 1.64-1.67 42.00-141.00 0.02-0.08 0.0-0.2 0.0-0.5 .02 .02

Soil Features–Walton County, Florida

Map symbol and soil name

Restrictive Layer Subsidence Potential for frost action

Risk of corrosion

Kind Depth to top

Thickness Hardness Initial Total Uncoated steel Concrete

Low-RV- High

Range Low- High

Low- High

In In In In

12—Foxworth sand, 0 to 5 percent slopes

Foxworth — — 0 0 None Low High

17—Lakeland sand, 0 to 5 percent slopes

Lakeland — — 0 0 None Low High

Map unit symbol and soil name

Hydrologic group

Surface runoff

Most likely months

Water table Ponding Flooding

Upper limit Lower limit Kind Surface depth

Duration Frequency Duration Frequency

Ft Ft Ft

12—Foxworth sand, 0 to 5 percent slopes

Foxworth A Negligible Jan-May — — — — — None — None

Jun-Oct 3.5-6.0 5.4-6.0 Apparent — — None — None

Nov-Dec — — — — — None — None

17—Lakeland sand, 0 to 5 percent slopes

Lakeland A Very low Jan-Dec — — — — — None — None