25B5002 - Appendix G- Site Characterization Report - AOC Part 3.pdf

PDF 22 MB Posted Jan 13, 2025

Attached to: Craney Island Eastward Expansion (CIEE) Pre-Dredging Phase 1C
Solicitation number: W9123625B5002
Issued by: Department of the Army Corps of Engineers Engineering District Norfolk

About this file

Written by GovTribe AI · Jan 14, 2025

This file contains geotechnical exploration data from site investigations conducted in 2008 at the Atlantic Ocean Channel (AOC) site near Norfolk, Virginia, including cone penetration test (CPT) logs, vibracore sampling results, and laboratory test data. The appendix includes detailed logs from 21 mini-CPT soundings (mCPTs 08BC-1 to 08BC-21) and 5 vibracore explorations (08V-21 to 08V-25) performed by ConeTec Inc. and Alpine Ocean Seismic Survey Inc. respectively under contract to S&ME for the USACE.

The data includes tip resistance measurements, sleeve friction, friction ratio plots from the CPT soundings, soil descriptions and classifications from the vibracores, and laboratory test results including moisture content, Atterberg limits, and grain size analyses. The explorations focused on characterizing potential sand borrow areas within the channel, with mudline elevations generally between -50 and -60 feet MLLW. The data is presented through detailed logs, summary tables, and cross-sections showing the subsurface stratigraphy along the channel alignment. Several figures illustrate the fines content and median grain size distribution of the potential borrow materials.

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D50 (mm)

0.01 0.02 0.05 0.1 0.2 0.5 1

Virginia Port Authority Project No. 3582.006

FINES CONTENT AND MEDIAN GRAIN SIZE (D50) COMPARISION PLOT

Area A7

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-6g

LEGEND

Potential Borrow Material"

DRAFT

Water Content (%) 0 20 40 60 80 100

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A1

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7a

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

Potential Borrow Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A2

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7b

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A3

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7c

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A4

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7d

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A5

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7e

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A6

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7f

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No. 3582.006

WATER CONTENT PROFILE

Area A7

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-7g

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

Cone Tip Resistance (ksf) 0 50 100 150 200 250 300

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A1

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8a

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

Potential Borrow Material!

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A2

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8b

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A3

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8c

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A4

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8d

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A5

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8e

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A6

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8f

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

-80

-75

-70

-65

-60

-55

-50

-45

-40

Virginia Port Authority Project No.3582.006 mCPT MEASURED TIP RESISTANCE (qc) Area A7

Atlantic Ocean Channel Offshore Southeast Virginia

FIGURE 5-8g

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

Liquid Limit 0 10 20 30 40 50 60 70 80 90 100 110

CH or OH

MH or OH

ML or OL

CL or OL

CL-ML

Virginia Port Authority Project No. 3582.006

PLASTICITY CHART

Atlantic Ocean Channel

Offshore Southeast Virginia

FIGURE 5-9

LEGEND

Fine Grain/Interbedded Material Beneath Potential Borrow Unit Material

World Trade Center, Suite 350 101 West Main Street Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

Notes:

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

This document may only be used for the purpose for which it was commissioned and in accordance with the terms of engagement for that commission. Unauthorized use of this document in any form whatsoever is prohibited. Not for navigational use.

1) Historical Vibracore explorations performed in:

1983 by Ocean Seismic Survey 1985 by Exmar 1990 by Exmar 1995 by Alpine Ocean Seismic Survey, Inc.

2) Geophysical survey utilized 1) an EdgeTech XStar Full Spectrum "Chirp" Sub-bottom Profiler system operating with frequencies of 2-16 kHz, and 2) an OSI 300-joule "Boomer" system with a single-channel hydrophone array.

3) Coordinate Grid: Virginia State Plane Coordinate System, South Zone; NAD1983; US Survey Feet

EXPLORATION LOCATIONS

Atlantic Ocean Channel

Offshore Southeast Virginia

LEGEND

CHART NO.:JOB NUMBER:

3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

KCS KRS

Nov. 2009

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

1983 USACE Vibracore Location

83V-101

1990 USACE Vibracore Location

90V-01A

Geotechnical Explorations

2007 S&ME CPT Location

2008 S&ME Vibracore Location

07BC-3

07V-47

90V-01A

90V-02A

90V-03A

90V-04A

90V-05A 90V-06A

90V-13A

90V-14A

90V-15A

90V-16A 90V-17A

90V-18A

90V-19A 90V-20A

90V-22A

90V-23A

90V-24A

90V-25A

90V-27A

90V-28A

90V-29A

90V-30A

90V-31A

90V-32A

90V-33A

90V-38A

90V-40A 90V-41A

90V-43A 90V-44A

90V-45A 90V-46A

90V-47A

90V-48A

90V-49A

90V-50A

90V-51A

90V-52A 90V-53A

90V-54A

90V-55A

90V-56A

90V-57A

90V-58A

90V-08A

90V-10A

90V-11A

90V-35A

90V-36A

90V-60A

90V-62A

90V-63A

90V-64A

90V-66A

90V-67A

90V-68A

90V-69A

90V-70A

90V-71A

90V-72A

90V-73A

90V-74A

90V-75A

90V-76A

90V-09A

90V-26A

90V-07A

90V-61A

90V-34A

90V-12A

90V-21A

90V-37A

90V-39A

90V-59A

07BC-12

07BC-14

07BC-16

07BC-17

07BC-18

07BC-19

07BC-20

07BC-21

07BC-22

07BC-23

07BC-24

07BC-25

07BC-26

07BC-27

07BC-28

07BC-29

07BC-30

07BC-31

07BC-32

07BC-33 07BC-34

07BC-35

07BC-10 07BC-11

07BC-13

07BC-15

07BC-70

07BC-71

07BC-72

07BC-73

07BC-74

07BC-75

07BC-76

07BC-77

07BC-78

07BC-79

07BC-80

07BC-81

07BC-82

07BC-83

07BC-84

07BC-85

07BC-86

07BC-87

07BC-1

07BC-2

07BC-3

07BC-4

07BC-5

07BC-6

07BC-7

07BC-8

07BC-9

07V-47

07V-51 07V-56

07V-59

07V-62

07V-64

07V-65

07V-69

07V-71

07V-72

07V-77

07V-79

07V-82

07V-83

07V-90

07V-10

07V-12

07V-13

07V-21

07V-40

07V-39

07V-1

07V-2

07V-3

07V-4

07V-5

07V-6

07V-7

08BC-9A

08BC-10

08BC-11

08BC-12

08BC-13

08BC-14

08BC-15

08BC-16

08BC-17

08BC-18

08BC-19

08BC-20

08BC-21

08BC-1

08BC-2

08BC-3

08BC-4

08BC-5

08BC-6

08BC-7

08BC-8

08BC-9

83V-101A

83V-102A

83V-108A

83V-100

83V-101

83V-102

83V-103

83V-104

83V-105

83V-106

83V-107

83V-108

83V-109

83V-110

83V-111

83V-112

83V-113

83V-114

83V-115

83V-116

83V-117

85V-174A

85V-189A

85V-189B

85V-174

85V-175

85V-176

85V-177

85V-178

85V-179

85V-180

85V-181

85V-182

85V-183

85V-184

85V-185

85V-186

85V-187

85V-188

85V-189

85V-190

85V-191

85V-192

85V-193

85V-194

95V-53

95V-60

95V-68

95V-69

95V-67

08V-22

08V-21

08V-23

08V-24

08V-25

95V-59

95V-67

95V-69

95V-68

95V-60

95V-53

2204 + 00

2174 + 00

2144 + 00

2114 + 00

2084 + 00

2054 + 00

2024 + 00

1994 + 00

1964 + 00

1934 + 00

1904 + 00

1874 + 00

1844 + 00

1814 + 00

1784 + 00

1754 + 00

1724 + 00

1694 + 00

1664 + 00

12230000

12240000

12250000

12260000

12270000

12280000

12290000

1985 USACE Vibracore Location

85V-174

1995 USACE Vibracore Location

95V-53

Seismic Reflection Trackline Number is survey line number.

0 1,600 3,200 4,800 Feet

Atlantic Ocean Channel with Stationing

CIEE

TSC

CHC

AOC

MAP EXTENTNNCA

Atlantic Ocean

Chesapeake Bay

Chesapeake Bay Bridge-Tunnel

DRAFT

0 5 Nautical Miles

2204+00

Atlantic Ocean Channel Centerline, Limits & Stationing 2204+00

Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

Notes:

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

1) Historical Vibracore explorations performed in:

1983 by Ocean Seismic Survey 1985 by Exmar 1990 by Exmar 1995 by Alpine Ocean Seismic Survey, Inc.

2) Single beam bathymetry survey conducted in October and November of 2007 with an Odom HydroTrac Digital Depth Sounder

3) Coordinate Grid: Virginia State Plane Coordinate System, South Zone; NAD1983; US Survey Feet

BATHYMETRY

2007 OSI Single-beam Survey

Atlantic Ocean Channel Offshore Southeast Virginia

LEGEND

CHART NO.:JOB NUMBER:

3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

1983 USACE Vibracore Location

83V-101

1990 USACE Vibracore Location

90V-01A

Geotechnical Explorations

2007 S&ME CPT Location

2007 S&ME Vibracore Location

07BC-3

07V-47

90V-01A

90V-02A

90V-03A

90V-04A

90V-05A 90V-06A

90V-13A

90V-14A

90V-15A

90V-16A 90V-17A

90V-18A

90V-19A 90V-20A

90V-22A

90V-23A

90V-24A

90V-25A

90V-27A

90V-28A

90V-29A

90V-30A

90V-31A

90V-32A

90V-33A

90V-38A

90V-40A 90V-41A

90V-43A 90V-44A

90V-45A 90V-46A

90V-47A

90V-48A

90V-49A

90V-50A

90V-51A

90V-52A 90V-53A

90V-54A

90V-55A

90V-56A

90V-57A

90V-58A

90V-08A

90V-10A

90V-11A

90V-35A

90V-36A

90V-60A

90V-62A

90V-63A

90V-64A

90V-66A

90V-67A

90V-68A

90V-69A

90V-70A

90V-71A

90V-72A

90V-73A

90V-74A

90V-75A

90V-76A

90V-09A

90V-26A

90V-07A

90V-61A

90V-34A

90V-12A

90V-21A

90V-37A

90V-39A

90V-59A

07BC-12

07BC-14

07BC-16

07BC-17

07BC-18

07BC-19

07BC-20

07BC-21

07BC-22

07BC-23

07BC-24

07BC-25

07BC-26

07BC-27

07BC-28

07BC-29

07BC-30

07BC-31

07BC-32

07BC-33 07BC-34

07BC-35

07BC-10 07BC-11

07BC-13

07BC-15

07BC-70

07BC-71

07BC-72

07BC-73

07BC-74

07BC-75

07BC-76

07BC-77

07BC-78

07BC-79

07BC-80

07BC-81

07BC-82

07BC-83

07BC-84

07BC-85

07BC-86

07BC-87

07BC-1

07BC-2

07BC-3

07BC-4

07BC-5

07BC-6

07BC-7

07BC-8

07BC-9

07V-47

07V-51 07V-56

07V-59

07V-62

07V-64

07V-65

07V-69

07V-71

07V-72

07V-77

07V-79

07V-82

07V-83

07V-90

07V-10

07V-12

07V-13

07V-21

07V-40

07V-39

07V-1

07V-2

07V-3

07V-4

07V-5

07V-6

07V-7

08BC-9A

08BC-10

08BC-11

08BC-12

08BC-13

08BC-14

08BC-15

08BC-16

08BC-17

08BC-18

08BC-19

08BC-20

08BC-21

08BC-1

08BC-2

08BC-3

08BC-4

08BC-5

08BC-6

08BC-7

08BC-8

08BC-9

83V-101A

83V-102A

83V-108A

83V-100

83V-101

83V-102

83V-103

83V-104

83V-105

83V-106

83V-107

83V-108

83V-109

83V-110

83V-111

83V-112

83V-113

83V-114

83V-115

83V-116

83V-117

85V-174A

85V-189A

85V-189B

85V-174

85V-175

85V-176

85V-177

85V-178

85V-179

85V-180

85V-181

85V-182

85V-183

85V-184

85V-185

85V-186

85V-187

85V-188

85V-189

85V-190

85V-191

85V-192

85V-193

85V-194

95V-53

95V-60

95V-68

95V-69

95V-67

08V-22

08V-21

08V-23

08V-24

08V-25

95V-59

Station: 2215 + 73.8 12278703 E 3472021 N

Station: 1630 + 73.6 12232957 E 3407557 N

Station: 1909 + 68.5 122522745 E 3487405 N

2204 + 00

2114 + 00

2054 + 00

2024 + 00

1964 + 00

1934 + 00

1784 + 00

1694 + 00

1664 + 00

12230000

12240000

12250000

12260000

12270000

12280000

12290000

1985 USACE Vibracore Location

85V-174

1995 USACE Vibracore Location

95V-53

0 1,600 3,200 4,800 Feet

CIEE

TSC

CHC

AOC

MAP EXTENTNNCA

Atlantic Ocean

Chesapeake Bay

Chesapeake Bay Bridge-Tunnel

DRAFT

0 5 Nautical Miles

2007 Bathymetry, Feet (MLLW) Single-beam survey performed by OSI

Contour interval is 10 feet.

Contour interval is 2 feet.

Area Where Bathymetry is Below El. -63 ft.

-32 - -36 -36 - -40 -40 - -44 -44 - -48 -48 - -52 -52 - -56 -56 - -60 -60 - -63

Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

Notes:

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

1) Historical Vibracore explorations performed in:

1983 by Ocean Seismic Survey 1985 by Exmar 1990 by Exmar 1995 by Alpine Ocean Seismic Survey, Inc.

2) Multibeam bathymetry survey conducted in September and October of 2007 with an Reson 8101 multibeam system.

3) Coordinate Grid: Virginia State Plane Coordinate System, South Zone; NAD1983; US Survey Feet

BATHYMETRY

2007 USACE Multibeam Survey

Atlantic Ocean Channel Offshore Southeast Virginia

LEGEND

CHART NO.:JOB NUMBER:

3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

KWS KRS

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

1983 USACE Vibracore Location

83V-101

1990 USACE Vibracore Location

90V-01A

Geotechnical Explorations

2007 S&ME CPT Location

2008 S&ME Vibracore Location

07BC-3

07V-47

A 90V-27A

90V-28A 90V-29A

90V-30A

90V-31A

90V-32A

90V-33A

90V-38A

90V-40A

90V-41A 90V-43A

90V-44A 90V-45A

90V-46A

90V-47A

90V-48A

90V-49A 90V-50A

90V-51A

90V-52A

90V-53A 90V-54A

90V-55A

90V-56A90V-57A

90V-58A90V-35A

90V-36A

90V-60A

90V-62A

90V-63A

90V-64A 90V-67A

90V-68A

90V-70A

90V-71A

90V-72A

90V-75A

90V-76A

90V-26A

90V-61A

90V-34A

90V-37A

90V-39A 90V-59A

07BC-20

07BC-21

07BC-22

07BC-23

07BC-24

07BC-25

07BC-26

07BC-27

07BC-29

07BC-30

07BC-31

07BC-32

07BC-33

07BC-34

07BC-35

07BC-79

07BC-83

07BC-87

07V-56

07V-62

07V-64

07V-65

07V-69

07V-71

07V-72

07V-77 07V-83

07V-90

08BC-14

08BC-15

08BC-16

08BC-17 08BC-18

08BC-19

08BC-20

08BC-21

83V-109

83V-110

83V-111

83V-112

83V-113

83V-114

83V-115

83V-116

83V-117

85V-189A

85V-189B

85V-187

85V-188

85V-189

85V-190

85V-191

85V-192 85V-193

85V-194

08V-24 08V-25 Station: 2215 + 73.8

12278703 E 3472021 N

2204 + 002174 + 002144 + 002114 + 002084 + 002054 + 002024 + 001994 + 001964 + 00

12260000

12270000

12280000

3470000

3480000

1985 USACE Vibracore Location

85V-174

1995 USACE Vibracore Location

95V-53

0 800 1,600 2,400 Feet

CIEE

TSC

CHC

AOC

MAP EXTENTS

NNCA

Atlantic Ocean

Chesapeake Bay

Chesapeake Bay Bridge-Tunnel

DRAFT

0 5 Nautical Miles

2007 Bathymetry, Feet (MLLW) Multibeam survey performed by USACE

Contour interval is 10 feet.

Contour interval is 2 feet.

Area Where Bathymetry is Below El. -63 ft.

Atlantic Ocean Channel Centerline, Limits & Stationing 2204+00

-48 to -50

-50 to -52

-52 to- -54

-54 to -56

-56 to -58

-58 to -60

-60 to -62

-62 to -63

90V-13A

90V-14A

90V-15A

90V-16A

90V-17A

90V-18A

90V-19A

90V-20A

90V-22A

90V-23A

90V-24A

90V-25A

90V-27A

90V-28A

90V-29A

90V-30A

90V-31A 90V-32A

90V-33A 90V-08A

90V-10A

90V-11A

90V-35A 90V-36A

90V-60A

90V-66A

90V-69A

90V-73A

90V-74A

90V-75A

90V-09A 90V-26A

90V-07A

90V-61A 90V-34A

90V-12A

90V-21A

90V-37A

07BC-12

07BC-14

07BC-18

07BC-19

07BC-20

07BC-21

07BC-22

07BC-23

07BC-24

07BC-10

07BC-11

07BC-13 07BC-15

07BC-70

07BC-75

07BC-79

07BC-85

07BC-7

07BC-8 07BC-9

07V-47

07V-51

07V-62

07V-65

07V-39

08BC-9A

08BC-10

08BC-11 08BC-12

08BC-13

08BC-14

08BC-6

08BC-7

08BC-8

08BC-9

83V-108A

83V-103

83V-104

83V-105

83V-106

83V-107

83V-108

83V-109

83V-110

83V-111 85V-189

85V-179

85V-180

85V-181

85V-182

85V-183

85V-184

85V-185

85V-186

85V-187

85V-188

08V-22

08V-23

Station: 1909 + 68.5 122522745 E 3487405 N

2024 + 00

1994 + 00

1964 + 00

1934 + 00

1904 + 00

1874 + 00

1844 + 00

1814 + 00

1784 + 00

12250000

12260000

122600003480000

3490000

90V-01A

90V-02A

90V-03A 90V-04A

90V-05A

90V-06A 90V-13

90V-08A 90V-10A

90V-11A

90V-09A

90V-07A

07BC-12

07BC-10

07BC-11

07BC-13

07BC-70

07BC-71

07BC-74

07BC-75

07BC-77

07BC-78

07BC-85

07BC-1

07BC-2 07BC-3

07BC-4

07BC-6

07BC-7 07BC-8

07BC-9

07V-12

07V-13

07V-21

07V-39

07V-1

07V-2

07V-3

07V-4

07V-7

08BC-9A

08BC-10

08BC-1 08BC-2

08BC-3

08BC-4

08BC-5

08BC-6

08BC-7

08BC-8

08BC-9

83V-101A

83V-102A

83V-100

83V-101

83V-102

83V-103

83V-104

83V-105

83V-106

85V-174A

85V-174

85V-175

85V-176 85V-177

85V-178

85V-179

85V-180

85V-181

85V-182

85V-183

85V-18408V-22

08V-21

Station: 1630 + 73.6 12232957 E 3407557 N 1874 + 001844 + 001814 + 001784 + 001754 + 001724 + 001694 + 001664 + 00

12230000

12240000

12250000

3490000

3500000

3510000

Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

ISOPACH (THICKNESS) OF

POTENTIAL BORROW UNIT

Atlantic Ocean Channel Offshore Southeast Virginia

LEGEND

CHART NO.:JOB NUMBER: 3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

KWS KRS

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

1983 USACE Vibracore Location

83V-101

1990 USACE Vibracore Location

90V-01A

Geotechnical Explorations

2007 S&ME CPT Location

2008 S&ME Vibracore Location

07BC-3

07V-47

AREA A1 AREA A2 AREA A3 AREA A4

1844 + 001814 + 001784 + 001754 + 001724 + 001694 + 001664 + 00

08BC-9

08BC-8

08BC-7

08BC-6

08BC-5

08BC-4

08BC-3

08BC-208BC-1

08BC-10

08BC-9A

07BC-9

07BC-8

07BC-7

07BC-6

07BC-4

07BC-307BC-2

07BC-1

07BC-85

07BC-78

07BC-71

07BC-70

07BC-10

08V-22

08V-21

07V-7

07V-4

07V-3

07V-2

07V-1

07V-21

07V-13

90V-07A

90V-06A

90V-05A

90V-04A

90V-03A

90V-02A

90V-01A

83V-105

83V-104

83V-103

83V-102

83V-101

83V-100

83V-102A 83V-101A

85V-182

85V-181 85V-180

85V-179

85V-17885V-17785V-176

85V-17585V-174

85V-174A

12235000

12240000

12245000

12250000

3490000

3495000

3500000

3505000

1985 USACE Vibracore Location

85V-174

1995 USACE Vibracore Location

95V-53

Seismic Reflection Trackline Number is survey line number.

0 1,000 2,000 Feet

TYPICAL

SECTION

AREA A5 AREA A5

2024 + 001994 + 001964 + 001934 + 00

1904 + 00

1874 + 00

08BC-9

08BC-16

08BC-14

08BC-13

08BC-12

08BC-11

08BC-9A

07BC-7907BC-75

07BC-15

07BC-13

07BC-24

07BC-23

07BC-21

07BC-20

07BC-19

07BC-18

07BC-14

07BC-12

08V-23 07V-65

07V-64

07V-62

07V-51

90V-59A

90V-37A90V-21A

90V-34A

90V-61A

90V-26A

90V-09A

90V-75A 90V-74A

90V-73A

90V-69A

90V-66A 90V-60A

90V-36A

90V-35A

90V-11A

90V-10A

90V-08A

90V-33A

90V-32A

90V-31A

90V-30A

90V-29A

90V-28A

90V-27A

90V-25A

90V-24A

90V-23A

90V-22A

90V-20A 90V-19A

90V-18A

90V-17A 90V-16A

90V-15A

90V-14A

90V-13A

83V-111

83V-110

83V-109

83V-108

83V-107

83V-106

83V-108A

85V-189 85V-188

85V-187

85V-186

85V-185

85V-184

85V-183

85V-189A

12250000

12255000

12260000

122650003485000

3485000

3490000

TYPICAL

SECTION

AREA A5 AREA A6 AREA A7

2204 + 002174 + 002144 + 002114 + 002084 + 002054 + 00

08BC-21

08BC-20

08BC-1808BC-17

08BC-16

08BC-15

07BC-84

07BC-83

07BC-35

07BC-34

07BC-33

07BC-32

07BC-31

07BC-29

07BC-28

07BC-26

07BC-25

07BC-24

07BC-23

08V-25 08V-24

07V-90

07V-71

07V-69

07V-65

90V-59A 90V-39A

90V-37A

90V-76A

90V-72A 90V-71A

90V-70A

90V-68A

90V-67A 90V-64A

90V-63A

90V-62A

90V-60A

90V-36A

90V-35A 90V-58A

90V-57A 90V-56A

90V-55A

90V-54A90V-53A

90V-52A 90V-51A

90V-50A

90V-49A

90V-48A

90V-47A90V-46A

90V-45A

90V-44A

90V-43A

90V-41A90V-40A

90V-38A

83V-117

83V-116

83V-115

83V-114

83V-113

83V-112

83V-111

85V-194

85V-193

85V-192

85V-191

85V-190

85V-189 85V-189B

85V-189A

12265000

12270000

12275000

12280000

3470000

3475000

3480000

CIEE

TSC

CHC

AOC

Northeast Extent

NNCA

Notes:

1) Isopach (thickness) mapping represents thickness of material above El. -63 ft (MLLW) and within the navigation channel.

2) Interpolation of PBU is based on geotechical and seismic data.

Seismic data were converted from time to depth using:

Vp = 5,000ft/sec.

CENTRAL EXTENT

SOUTHEAST EXTENT

NORTHWEST EXTENT

ISOPACH (THICKNESS) OF POTENTIAL

BORROW UNIT ABOVE EL. -63 FT (MLLW)

AND WITHIN NAVIGATION CHANNEL

Thickness (ft)

Isopach Contours (Feet)

Central Extent

Southeast Extent

DRAFT

Area Where Bathymetry is Below El. -63 ft.

Less than 2 ft

2 - 4

4 - 6

6 - 8

8 - 10

10 - 12

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

N30E

26' S30W

0 50 100

0 50 100 qt, tsf 0 50 100 qt, tsf

Fr, % 0510

Fr, %

0 50 100 Fines (%)

0 50 100

NCEER 0 50 100

NCEER

D50=0.135

D50=0.295

D50=0.14

D50=0.15

D50=0.27

D50=0.21

D50=0.17

D50=0.31

D50=0.52

D50=0.17

D50=0.41

NAVIGATION CHANNEL

Potential Borrow Unit Above El. -63 ft (MLLW) and within Navigation Channel

Potential Borrow Unit Below El. -63 ft (MLLW) and/or outside Navigation Channel

10 ft

200 ft Horizontal and Vertical Scales in Feet Vertical exaggeration is 20x.

D50 Median Grain Size (mm)

Fines Content (%)

CENTRAL EXTENT

TYPICAL SECTION

Atlantic Ocean SubareasA1

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

9NW

N44W

9NW'

S44E

0 50 100

0 50 100 0 50 100 0 50 100

0 50 100

0 50 100 0 50 100 0 50 100

0 50 100

0 50 100 qt, tsf

0 50 100 qt, ts f 0 50 100 qt , tsf

0 50 100 qt, tsf

Fr, %

Fr, % 0510

Fr, %

0 50 100 Fines (%)

0 50 100 Fines (%) 0 50 100

Fines (%) 0 50 100

Fines (%)

0 50 100 Fines (%)

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER 0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

D50=0.1D50=0.554

D50=0.882

0=0.129

0=0.342

D50=0.53

D50=0.372

D50=0.33

D50=0.49

D50=0.5

D50=0.36

D50=0.3

D50=0.29

D50=0.14

D50=0.265

D50=0.375

D50=0.14

D50=0.25

D50=0.29

D50=0.135

D50=0.15

D50=0.27

D50=0.36

D50=0.34

D50=0.14

D50=0.13

D50=0.16

D50=0.3

D50=0.23

D50=0.16

D50=0.27

D50=0.42

D50=0.13

D50=0.17

D50=0.11

D50=0.55

D50=0.38

D50=0.44

D50=0.32

10 ft

600 ft Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU

PBU-A

PBU-A PBU-A PBU-A

PBU

Seismic Data Quality Poor Base of PBU from Geotechnical Data

AREA A1 AREA A2 AREA A4AREA A3

7%13%

21%

14%

11%

22%

19%

23%

18%

15%

38%

4% 60%

64%

55%

20%

29%

93%

95%

52%

96%

98%

20%

14%

18%

22%

14%

38% 8%

18%

20%

5% 11%

12%

32%

89%

17%

80%

53%

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

10NW

N44W

10NW'

S44E

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 qt, tsf

0 50 100 qt, ts f

0 50 100 qt, tsf

0 50 100 qt, ts f

0 50 100 qt , tsf

Fr, %

0 50 100 Fines (%)

0 50 100 Fines (%)0 50 100

Fines (%)

0 50 100 Fines (%)

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

D50=0.11

D50=0.26

D50=0.366

D50=0.4

D50=0.34

D50=0.35

D50=0.31

D50=0.41

D50=0.12

D50=0.305

D50=0.29

D50=0.123

D50=0.24

D50=0.083

D50=0.23

D50=0.16 D50=0.13

D50=0.12

D50=0.26

D50=0.34

D50=0.42

D50=0.17

D50=0.38

D50=0.35

D50=0.17

D50=0.3

D50=0.29

D50=0.41

D50=0.55

D50=0.38

D50=0.44

D50=0.22D50=0.23

D50=0.32

10 ft

600 ft Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU

PBU-A

PBU

PBU-A

Poor Quality Seismic Data Base of PBU from Geotech Data

AREA A4AREA A1 AREA A3AREA A2

62%

78%

22%

12%

10%

20% 16%

44%

14%

21%

15%

13%

52%

56%

93%

96%

61%

55%

75%

95%

11%

22%

25%

13%

16%

15%

25%

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

11NW

N44W

11NW'

S44E

0 50 100

0 50 100 0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 qt , tsf

0 50 100 qt, tsf

0 50 100 qt, ts f

0 50 100 qt, tsf

0 50 100 qt , tsf

Fr, %

0 50 100 Fines (%)

0 50 100 Fines (%) 0 50 100

Fines (%)

0 50 100 Fines (%)

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

D50=0.15

D50=0.27

D50=0.36

D50=0.34

D50=0.12 D50=0.38

D50=0.35

D50=0.29

D50=0.53

D50=0.42

D50=0.35

D50=0.16

D50=0.23

D50=0.62

D50=0.27

D50=0.11

D50=0.12

10 ft

600 ft Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU

PBU-A

PBU

PBU-A

Poor Seismic Data Quality Base of PBU from Geotech Data

AREA A4AREA A1 AREA A3AREA A2

18%

15%

14% 2%

61%

37%

56%20%

75%

86%

97%

12% 10%

58%

98%

34%

100%

21%

12%

97%

14%

56%

12%

98%

Line 11NW - 11NW'

Line 10NW - 10NW'

Line 9NW - 9NW'

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

USACE Vibracore Location: 1983, 1985, 1990, 1995 First two digits indicate year of exploration.

85V-11

2007 S&ME CPT Location

07BC-9

Geotechnical Explorations

2007 S&ME Vibracore Location

07V-13

Year indicates when the report was issued. Actual date of exploration may differ from the year the report was issued.

Refer to the report appendices for actual exploration dates.

Available Potential Borrow Material above El. -63 feet (MLLW) and within Navigation Channel (allowable dredge interval per NEPA documents).

Potential Borrow Material below El. -63 feet (MLLW) and/or outside the Navigation Channel. Refer to text for description.

PBU-A

PBU

World Trade Center, Suite 350 101 West Main Street Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

SUBSURFACE CROSS SECTIONS:

9NW-9NW', 10NW-10NW' & 11NW-11NW'

Atlantic Ocean Channel Offshore Southeast Virginia

CHART NO.:JOB NUMBER:

3582.006

NO: DATE:

DESCRIPTION:

DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

CIEE

TSC

CHC

AOC

MAP EXTENT

NNCA

Notes:

1) Bathymetry from 2007 multibeam survey conducted by USACE.

2) Stratigraphic contacts are approximate and are interpreted from CPT soundings, vibracores, and seismic reflection survey data. Conditions vary both along and perpendicular to the section line.

3) Vibracore and CPT sounding logs are projected onto the line of the cross sections.

Therefore, stratigraphic contacts may not exactly correspond to the indications (lithology, friction ratio, etc.) in the logs.

4) Reflectors were interpreted from 2007 seismic ref lection data collected by Ocean Surveys, Inc.

5) Refer to Figure 3-4 for key to symbology used on cross section.

6) The soil classifications for the mini-CPTs are based on the soil classification of Robertson and Campanella (1988).

7) Seismic reflectors were converted from time to depth using: Vp= 5,000 ft/sec.

Atlantic Ocean

Chesapeake Bay

Chesapeake Bay Bridge-Tunnel

0 5 Nautical Miles

DRAFT

LEGEND

2007 Bathymetry (Note 1)

Approximate Base of Dredge Cut (Elevation -63 ft)

Seismic Reflector Interpreted from Single Channel Boomer Seismic Data

Base of Potential Borrow Unit

Navigation Channel Centerline Stationing

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

9SE

N60W

9SE'

S60E

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 1000 50 100

0 50 100 0 50 100 qt, tsf

0 50 100 qt , tsf

0 50 100 qt, tsf

Fr, %

Fr , %

0 50 100 Fines (%)

0 50 100 Fines (%) 0 50 100

Fines (%) 0 50 100 Fines (%)

0 50 100 Fines (%)

0 50 100 Fines (%)0 50 100

Fines (%)

0 50 100 Fines (%)

D50=0.1

D50=0.099

D50=0.21

D50=0.2

D50=0.12

D50=0.14

D50=0.295

D50=0.13

D50=0.143

D50=0.285

D50=0.13

D50=0.21

D50=0.41

D50=0.13

D50=0.43

D50=0.45

D50=0.21

D50=0.16

D50=0.3

D50=0.34

D50=0.14

D50=0.15

D50=0.39

D50=0.263

D50=0.17

D50=0.295

D50=0.26

D50=0.16

D50=0.27

D50=0.14

D50=0.35

D50=0.39

D50=0.135

D50=0.36

D50=0.365

D50=0.28

D50=0.18

D50=0.39

D50=0.28

D50=0.15

D50=0.35

D50=0.23

D50=0.17

D50=0.27

D50=0.25

D50=0.235

D50=0.19

D50=0.33

D50=0.18

D50=0.14

D50=0.29

D50=0.51

D50=0.14

D50=0.65

D50=0.56

D50=0.14

D50=0.17

D50=0.29

D50=0.14

D50=0.15

D50=0.27

D50=0.25

D50=0.14

D50=0.22

D50=0.302

D50=0.144

D50=0.42

D50=0.34

D50=0.17

D50=0.19

D50=0.3

D50=0.43

D50=0.13

D50=0.2

D50=0.19

D50=0.43

D50=0.25

D50=0.14

D50=0.23

D50=0.28

D50=0.14

D50=0.16

D50=0.48

D50=0.12

D50=0.99

D50=0.25

D50=0.43

D50=0.12

D50=0.11

D50=0.19 D50=0.33

D50=0.36

D50=0.3

D50=0.16

D50=0.17

D50=0.11

D50=0.12

D50=0.25

D50=0.093

D50=0.22

D50=0.11

D50=0.44

D50=0.47

10 ft

600 ft

Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU

PBU-A

PBU

PBU-A

PBU

PBU-A

Reflector Associated with Top of Gravel(?)

AREA A5 AREA A6 AREA A7AREA A4

36%

33%

8% 9%

6% 10%

22%

13% 25%

11% 14%

21%

12%

19%

17%

18%

16%

20%

23%

14%

13%

11% 3%

11%

12% 3%

22% 9%

17%

4% 11%

14%3%

5% 12%

12%

14%

13%

4% 17%

12%

13%

4%18%

2%10%

12% 6%

13%

12%

13%

17%

13% 13%

12% 9%

13%

22%

12%

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

0 50 100

/BYM

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

10SE

N60W

10SE'

S60E

0 50 100

0 50 100 0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 qt, tsf

0 50 100 qt , tsf

0 50 100 qt, tsf

0 50 100 qt , tsf

Fr, %

Fr , %

Fr, %

Fr , %

Fr, %

0 50 100 Fines (%)

D50=0.22

D50=0.42

D50=0.39

D50=0.167

D50=0.29

D50=0.14

D50=0.11

D50=0.08

D50=0.145

D50=0.41

D50=0.14

D50=0.12

D50=0.21

D50=0.12

D50=0.14

D50=0.295

D50=0.14

D50=0.25

D50=0.29

D50=0.12

D50=0.135

D50=0.27

D50=0.12

D50=0.2

D50=0.39

D50=0.13

D50=0.24

D50=0.54

D50=0.26

D50=0.149

D50=0.24

D50=0.28

D50=0.17

D50=0.27

D50=0.25

D50=0.26

D50=0.17

D50=0.196

D50=0.4

D50=0.14

D50=0.65

D50=0.56

D50=0.14

D50=0.34

D50=0.37

D50=0.24

D50=0.39

D50=0.5

D50=0.26

D50=0.14

D50=0.35

D50=0.13

D50=0.2

D50=0.24

D50=0.14

D50=0.33

D50=0.13

D50=0.32

D50=0.29

D50=0.14 D50=0.3

D50=0.13

D50=0.23

D50=0.14

D50=0.18

D50=0.2

10 ft

600 ft

Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU

PBU-A

PBU

PBU-A

PBU

PBU-A

PBU

PBU-A

PBU

PBU-A

AREA A5 AREA A6 AREA A7AREA A4

18%

7% 14%

13%

36%

15% 24%

12%

45%

17% 19%

18%16% 22%

4%20%

11%

26%

95%

21%

92%

13%

12%

15%3% 5%

14%

18%

13%

18%

2%4%

13%

12%

18% 3%

16%

12%

13%

0 50 100 Fines (%)

0 50 100

NCEER

0 50 100

NCEER0 50 100

NCEER

0 50 100

NCEER

0 50 100

NCEER

0 50 100

/BYM

0 50 100

/BYM

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

11SE

N60W

11SE'

S60E

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 0 50 100

0 50 100

0 50 100 qt, tsf

Fr, %

Fr, %0510

Fr, %

D50=0.242

D50=0.16

D50=0.265

D50=0.135

D50=0.295

D50=0.28

D50=0.195

D50=0.19

D50=0.26

D50=0.15

D50=0.245

D50=0.14

D50=0.17

D50=0.13

D50=0.34

D50=0.27

D50=0.14

D50=0.35

D50=0.11

D50=0.21

D50=0.42

D50=0.09

D50=0.28

D50=0.85

D50=0.14

D50=0.1

D50=0.15

D50=0.52

D50=0.43

D50=0.3

D50=0.13

D50=0.23

D50=0.17

D50=0.38

D50=0.16

D50=0.38

D50=0.28

10 ft

600 ft

Horizontal and Vertical Scale in Feet Vertical exaggeration is 50x.

PBU PBU

PBU-APBU-A

PBU

PBU-A

PBU

PBU-A

AREA A5 AREA A6 AREA A7AREA A4

9% 6%

12%

15%

17%

2% 5%

17%

11%

13% 15%

14%

10% 95%

12%

18%

20%

92%

21%

4% 10%

10%

13%

15%

20%

Line 11SE - 11SE'

Line 10SE - 10SE'

Line 9SE - 9SE'

World Trade Center, Suite 350 101 West Main Street Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

This document may only be used for the purpose for which it was commissioned and in accordance with the terms of engagement for that commission. Unauthorized use o f this document in any form whatsoever is prohibited. Not for navigational use.

SUBSURFACE CROSS SECTIONS:

9SE-9SE', 10SE-10SE' & 11SE-11SE'

Atlantic Ocean Channel Offshore Southeast Virginia

CHART NO.:JOB NUMBER:

3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

CIEE

TSC

CHC

AOC

MAP EXTENT

NNCA

Atlantic Ocean

Chesapeake Bay

Chesapeake Bay Bridge-Tunnel

0 5 Nautical Miles

DRAFT

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

USACE Vibracore Location: 1983, 1985, 1990, 1995 First two digits indicate year of exploration.

85V-11

2007 S&ME CPT Location

07BC-9

Geotechnical Explorations

2007 S&ME Vibracore Location

07V-13

Year indicates when the report was issued. Actual date of exploration may differ from the year the report was issued.

Refer to the report appendices for actual exploration dates.

Available Potential Borrow Material above El. -63 feet (MLLW) and within Navigation Channel (allowable dredge interval per NEPA documents).

Potential Borrow Material below El. -63 feet (MLLW) and/or outside the Navigation Channel. Refer to text for description.

PBU-A

PBU

Notes:

1) Bathymetry from 2007 multibeam survey conducted by USACE.

2) Stratigraphic contacts are approximate and are interpreted from CPT soundings, vibracores, and seismic reflection survey data. Conditions vary both along and perpendicular to the section line.

3) Vibracore and CPT sounding logs are projected onto the line of the cross sections.

Therefore, stratigraphic contacts may not exactly correspond to the indications (lithology, friction ratio, etc.) in the logs.

4) Reflectors were interpreted from 2007 seismic reflection data collected by Ocean Surveys, Inc.

5) Refer to Figure 3-4 for key to symbology used on cross section.

6) The soil classifications for the mini-CPTs are based on the soi l classification of Robertson and Campanella (1988).

7) Seismic reflectors were converted from time to depth using: Vp= 5,000 ft/sec.

LEGEND

2007 Bathymetry (Note 1)

Approximate Base of Dredge Cut (Elevation -63 ft)

Seismic Reflector Interpreted from Single Channel Boomer Seismic Data

Base of Potential Borrow Unit

Navigation Channel Centerline Stationing

Norfolk, Virginia 23510 Tel: (757) 625-3350, Fax: (757) 625-3352 www.fugroatlantic.com

FUGRO ATLANTIC

GEODETIC INFORMATION

SPHEROID:

SEMI-MAJOR AXIS:

SEMI-MINOR AXIS:

INVERSE FLATTENING:

ECCENTRICITY2:

PROJECTION:

ZONE:

LONGITUDE OF ORIGIN:

FALSE EASTING:

FALSE NORTHING:

GRS 1980

6,378,137.000 6,356,752.314 298.25722101 0.006694380

LAMBERT CONFORMAL CONIC

VIRGINIA SOUTH

36.3o

11,482,916 3,280,833

AVERAGE FINES CONTENT (%) OF

SAND LAYERS WITHIN THE PBU

Atlantic Ocean Channel Offshore Southeast Virginia

CHART NO.:JOB NUMBER: 3582.006

NO: DATE: DESCRIPTION: DRAWN:

1 Draft AOC Site Characterization Report

CHKD: APPR:

KRS

NAVIGATION CHANNEL

LIMIT

AREA A1 AREA A2 AREA A3 AREA A4

08BC-9

08BC-8

08BC-7

08BC-6

08BC-5

08BC-4

08BC-3

08BC-208BC-1

08BC-10

08BC-9A

07BC-9

07BC-8

07BC-7

07BC-6

07BC-4

07BC-307BC-2

07BC-1

07BC-85

07BC-78

07BC-71

07BC-70

07BC-10

08V-22

08V-21

07V-7

07V-4

07V-3

07V-2

07V-1

07V-21

07V-13

90V-07A

90V-06A

90V-05A

90V-04A

90V-03A

90V-02A

90V-01A

83V-105

83V-104

83V-103

83V-102

83V-101

83V-100

83V-102A 83V-101A

85V-182

85V-181 85V-180

85V-179

85V-17885V-17785V-176

85V-17585V-174

85V-174A

- 1840 + 00- 1820 + 00- 1800 + 00- 1780 + 00

- 1760 + 00

- 1740 + 00- 1720 + 00- 1700 + 00- 1680 + 00- 1660 + 00

12235000

12240000

12245000

12250000

3490000

3495000

3500000

3505000

0 1,000 2,000 Feet

NAVIGATION CHANNEL

LIMIT

AREA A5 AREA A5

08BC-9

08BC-14

08BC-13

08BC-12

08BC-11

08BC-9A

07BC-9

07BC-7907BC-75

07BC-15

07BC-13 07BC-24

07BC-23

07BC-21

07BC-20

07BC-19

07BC-18

07BC-14

07BC-12

08V-23 07V-65

07V-64

07V-62

07V-51

90V-37A90V-21A

90V-34A

90V-61A

90V-07A

90V-26A

90V-09A

90V-75A

90V-74A

90V-73A

90V-69A

90V-66A 90V-60A

90V-36A

90V-35A

90V-11A

90V-10A

90V-08A

90V-33A

90V-32A

90V-31A

90V-30A

90V-29A

90V-28A

90V-27A

90V-25A

90V-24A

90V-23A

90V-22A

90V-20A90V-19A

90V-18A

90V-17A 90V-16A

90V-15A

90V-14A

90V-13A

83V-111

83V-110

83V-109

83V-108

83V-107

83V-106

83V-105

83V-108A

85V-188

85V-187

85V-186

85V-185

85V-184

85V-183

85V-189A

- 2040 + 00

- 2020 + 00- 2000 + 00- 1960 + 00

- 1940 + 00

- 1920 + 00

- 1900 + 00

- 1880 + 00

- 1860 + 00

- 1980 + 00

12250000

12255000

12260000

122650003485000

3485000

3490000

NAVIGATION CHANNEL

LIMIT

AREA A5 AREA A6 AREA A7

08BC-21

08BC-20

08BC-1808BC-17

08BC-16

08BC-15

07BC-83

07BC-35

07BC-34

07BC-33

07BC-32

07BC-31

07BC-29

07BC-28

07BC-26

07BC-25

07BC-24

07BC-23

08V-25 08V-24

07V-90

07V-71

07V-69

07V-65

90V-59A 90V-39A

90V-37A

90V-76A

90V-72A

90V-71A

90V-70A

90V-68A

90V-67A 90V-64A

90V-63A

90V-62A

90V-60A

90V-36A

90V-35A 90V-58A

90V-57A 90V-56A

90V-55A

90V-54A90V-53A

90V-52A 90V-51A

90V-50A

90V-49A

90V-48A

90V-47A90V-46A

90V-45A90V-44A

90V-43A

90V-41A90V-40A

90V-38A

83V-117

83V-116

83V-115

83V-114

83V-113

83V-112

83V-111

85V-194

85V-193

85V-192

85V-191

85V-190

85V-189 85V-189B

85V-189A

- 2200 + 00- 2180 + 00

- 2160 + 00

- 2140 + 00- 2120 + 00- 2100 + 00- 2080 + 00

- 2060 + 00

- 2040 + 00

12265000

12270000

12275000

12280000

3470000

3475000

3480000

CIEE

TSC

CHC

AOC

Northeast Extent

NNCA

CENTRAL EXTENT

SOUTHEAST EXTENT

NORTHWEST EXTENT

Central Extent

Southeast Extent

DRAFT

LEGEND

2008 S&ME CPT Location

08BC-16

08V-22

2008 S&ME Vibracore Location

1983 USACE Vibracore Location

83V-101

1990 USACE Vibracore Location

90V-01A

Geotechnical Explorations

2007 S&ME CPT Location

2007 S&ME Vibracore Location

07BC-3

07V-47

1985 USACE Vibracore Location

85V-174

1995 USACE Vibracore Location

95V-53

Seismic Reflection Trackline Number is survey line number.

AVERAGE FINES CONTENT OF THE SAND LAYERS WITHIN

THE POTENTIAL BORROW UNIT

From Laboratory Test Data and CPT Soundings (Robertson and Wride, 1998)

Contour interval is 5 percent.

Atlantic Ocean SubareasA1

0 - 5

5 - 10

10 - 15

15 - 20

20 - 25

25 - 30

30 - 35

35 - 40

40 - 45

45 - 50

Notes:

1. Samples from vibracores used during laboratory testing were, in some cases, collected from discrete intervals.Therefore, at vibracore locations, data used to generate the contours do not fully characterize the entire vertical profile at the exploration location. Fine-grained layers may be present at vibracore locations.

2. Fines contents were interpolated between exploration locations. Fine-grained sediment may exist in areas between exploration locations.

APPENDIX A

2008 EXPLORATIONS

Virginia Port Authority November 9, 2009 (Project No. 3582.006)

INTRODUCTION

This appendix includes data from vibracore sampling conducted by Alpine Ocean Seismic Survey, Inc., and mini-CPT (mCPT) soundings conducted by ConeTec, Inc. under contract to S&ME. S&ME was contracted to the USACE. A total of 61 mCPT soundings and 25 vibracores were conducted within the potential sand resource areas of Cape Henry Channel and Atlantic Ocean Channel between October and December of 2008. Of those explorations, 21 mCPTs and 5 vibracore explorations were completed in the Atlantic Ocean Channel area.

This appendix only contains logs and data from explorations conducted at the Atlantic Ocean Channel site. A summary of the mini-CPT soundings is provided in Table A-1, while the vibracore explorations are summarized in Table A-2.

21 mCPT soundings (mCPTs 08BC-1 to 08BC-21) were completed using an electronic mini-cone CPT system with a 2 cm2 area and net area ratio of approximately 0.60. The mCPT recorded tip resistance, sleeve resistance, friction ratio, and depth. The mCPT did not record pore pressure data. ConeTec conducted the initial mCPT processing and provided those data to S&ME. S&ME prepared the mCPT logs included in this appendix. Fugro obtained the mCPT data from S&ME and performed additional analyses (e.g. estimated fines content, relative density, etc.) and incorporated the data into the project GIS database and geophysical interpretation software as described in this report.

Five vibracore explorations (vibracores 08V-21 to 08V-25) were conducted using a self contained model 271 B Alpine Pneumatic Vibracore unit with a 20-foot-long, core barrel. This data provides soil samples and continuous soil profiles of subsurface sediments which aids in characterizing stratigraphic variations.

Laboratory testing was performed by S&ME on the vibacore samples. Laboratory test results include moisture content, Atterberg limits, and gradation analysis. A test result summary table, grain size curves, and plasticity charts are included in this appendix. Note that the summary table also includes test results from the explorations conducted at the Cape Henry Channel site.

For clarity purposes, the exploration identification nomenclature from the original report has been standardized in this report. For our standardized exploration identifiers, we have retained the original exploration number (e.g. 9), but have altered the prefix to include the year of the exploration and the type of exploration (e.g. 08V-9), where “V” represents a vibracore exploration and “BC” represents a mCPT. The logs presented in this appendix contain the original exploration identification, while Table A-1 and A-2, along with charts and figures presented in this report use Fugro’s standardized nomenclature.

N:\MANAGEMENT\3582_CRANEYISLAND\3582-006_SITECHAR\06_REPORTING\AOC_SCR\APP-A.DOC A-1

Virginia Port Authority November 9, 2009 (Project No. 3582.006)

N:\MANAGEMENT\3582_CRANEYISLAND\3582-006_SITECHAR\06_REPORTING\AOC_SCR\APP-A.DOC A-2

Table A-1. 2008 Mini-CPT Soundings

Coordinates Virginia State Plane, South Zone, NAD 83, Feet Exploration1 Type

Completion Date

Completion Depth (feet)

Northing Easting

Mudline

Elevation (feet)

(MLLW)2

Location With

Respect to Channel3

08BC-1 CPT 11/10/2008 30.5 3504394 12235923 -62.4 Outside 08BC-2 CPT 11/10/2008 32.1 3501840 12238429 -59.0 Within 08BC-3 CPT 11/10/2008 31.1 3500488 12238943 -59.7 Within 08BC-4 CPT 11/10/2008 11.2 3499454 12242209 -58.4 Outside 08BC-5 CPT 11/10/2008 31.0 3497803 12243008 -57.0 Within 08BC-6 CPT 11/10/2008 30.1 3493602 12244768 -53.6 Outside 08BC-7 CPT 11/10/2008 6.8 3495195 12243984 -54.8 Within 08BC-8 CPT 11/10/2008 4.3 3494019 12246669 -55.4 Adjacent 08BC-9 CPT 10/31/2008 12.7 3491422 12248400 -54.2 Within

08BC-9A CPT 10/31/2008 31.8 3491462 12248366 -54.6 Within 08BC-10 CPT 10/31/2008 11.4 3494174 12249644 -49.8 Outside 08BC-11 CPT 10/31/2008 15.7 3488675 12250976 -55.1 Within 08BC-12 CPT 10/31/2008 31.6 3486850 12253154 -54.7 Within 08BC-13 CPT 10/31/2008 11.7 3485335 12255675 -55.5 Within 08BC-14 CPT 10/31/2008 17.5 3482627 12259371 -54.2 Within 08BC-15 CPT 10/31/2008 11.3 3479647 12264424 -51.8 Adjacent 08BC-16 CPT 10/31/2008 17.6 3480833 12264685 -56.9 Within 08BC-17 CPT 10/31/2008 19.0 3479342 12266117 -58.7 Within 08BC-18 CPT 10/31/2008 10.9 3477544 12269289 -59.6 Within 08BC-19 CPT 10/31/2008 14.4 3477784 12272104 -57.6 Outside 08BC-20 CPT 10/31/2008 13.9 3473289 12276481 -59.6 Within 08BC-21 CPT 10/31/2008 11.0 3473122 12277894 -58.7 Within

1 Exploration designation prefixes used in this report (e.g. charts) have been modified from designations used in the original reports.

2 Mudline elevation at time of exploration and displayed on original logs.

3 Adjacent means that exploration is within 200 feet of the navigation channel.

Table A-2. 2008 Vibracore Explorations

Coordinates Virginia State Plane, South Zone, NAD 83, Feet Exploration1 Type

Completion Date

Completion Depth (feet)

Northing Easting

Mudline

Elevation (feet)

(MLLW)2

Mudline

Elevation (feet)

(MLLW)3

Difference between 2008 and measure-ments4

Location With

Respect to

Channel5

08V-21 Vibracore 10/6/2008 20.0 3501820 12238391 -47.2 -61.0 13.8 Within 08V-22 Vibracore 10/6/2008 20.0 3495434 12243953 -50.3 -57.1 6.8 Within 08V-23 Vibracore 10/6/2008 15.6 3488732 12250874 -48.4 -55.4 7.0 Within 08V-24 Vibracore 10/9/2008 16.0 3479260 12266082 -52.8 -57.8 6.0 Within 08V-25 Vibracore 10/9/2008 20.0 3473253 12276356 -52.6 -59.0 6.4 Within

1 Exploration designation prefixes used in this report (e.g. charts) have been modified from designations used in the original reports.

2 Mudline elevation at time of exploration and displayed on original logs.

3 Mudline elevation at exploration location estimated from 2007 survey.

4 Note the large discrepancies in mudline elevation measurements. When using mudline elevations from the 2007 survey, lithologic transitions correlate better with adjacent explorations and seismic data. Based on this the preferred mudline elevations are from the 2007 survey. However, changes in mudline elevation between the 2007 and 2008 measurements are unknown and may introduce error into interpretations based on this dataset.

5 Adjacent means that exploration is within 200 feet of the navigation channel.

File details come from the government source that posted it. Updated Jan 13, 2025.