A21 - Manteo_SilverLakeHarbor_RTA_Plans_unlocked.pdf

PDF 6 MB Posted Jul 18, 2022

Attached to: Silver Lake/Manteo Interior Channel Maintenance Dredging Federal contract opportunity
Solicitation number: W912PM22B0027
Issued by: Department of the Army Corps of Engineers Engineering District Wilmington

About this file

Written by GovTribe AI · Dec 28, 2023

This solicitation is for a firm fixed price contract to perform maintenance dredging of Silver Lake Harbor and Manteo Interior Channel in North Carolina. Approximately 323,000 cubic yards of material will be removed from various ranges and channels, with an optional 12'+2' overdepth dredging of Ranges 14A and 14B. Dredged material will be disposed on existing disposal islands with effluent control, except for Island H which has a containment dike and spillways. Additionally, approximately 300,000 cubic yards will be removed from Big Foot Slough Channel and placed on Big Foot Slough Island, also with effluent control. The environmental window for placement is September 1 to March 31. This is a 100% small business set-aside. The magnitude of construction is estimated between $5-10 million. The solicitation will be issued electronically on or around July 18, 2022.

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Other files for this federal contract opportunity

Other files attached to Silver Lake/Manteo Interior Channel Maintenance Dredging, newest first.
File	Type	Posted
B1 - Bid Opening Sign In Sheet.pdf	PDF	Aug 17, 2022
B1 - Bid Abstract_Manteo-Silver Lake_Signed.pdf	PDF	Aug 17, 2022
A21 - RTA-SPECS2-FY23Manteo-SlverLake.pdf	PDF	Jul 18, 2022
A21 - W912PM22B0027_Manteo_Silver Lake Harbor Solicitation.pdf	PDF	Jul 18, 2022
A21 - Manteo_SilverLakeHarbor_RTA_Plans.pdf	PDF	Jul 18, 2022

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SOLICITATION NO.:

CONTRACT NO.:

ISSUE DATE:

WILMINGTON DISTRICT

MAINTENANCE DREDGING

SILVER LAKE HARBOR

AND MANTEO INTERIOR CHANNEL

NORTH CAROLINA

W912PM22B0027

TBD

JULY 2022

US Army Corps of Engineers ®

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

G001

C O

S H

R S

dw g

Approval Recommended: *

Approved: *

DATE

SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION

AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDEXED ON SHEET GI01.

CHIEF, ENGINEERING BRANCH

* THIS PROJECT WAS DESIGNED BY THE U.S. ARMY CORPS OF ENGINEERS,

WILMINGTON DISTRICT. INDIVIDUALS WHOSE SIGNATURES AND REGISTRATION

DESIGNATIONS APPEAR ON THESE DOCUMENTS ARE OPERATING WITHIN THE

SCOPE OF THEIR EMPLOYMENT. SIGNATURES ARE REQUIRED BY ER 1110-1-8152.

CHIEF, DESIGN and GENERAL ENGINEERING SECTION

30 JUNE 2022

1 JULY 2022

Columbia

BYPASS

R O A N O K E

Manteo

Nags Head

ANO

KE SO

UND

SHALL

BAG B

BROAD CREEKWanchese

I S L A N D

ISLAND "C"

ISLAND "G"

Oreg on

In let

PEA ISLAN

H atteras

O cracoke

DIE ISLAND

BRIDGE TO OLD

HOUSE CHANNEL

Stum py Point

Engelhard

A t l a n t i c O c e a n

ISLAND "F"

OLD

OUS

CRO

ATAN SO

UND

Manns Harbor

ISLAND "H" SEE SHEET CN105

RANGE 16 SEE SHEET CN102

WALTER SLOUGH

ISLAND "D" SEE SHEET CN106

RANGE 17 SEE SHEET CN103

RANGE 17 EXTENSION SEE SHEET CN104

ISLAND "L" SEE SHEET CN107

ISLAND "MN" SEE SHEET CN107

WASHINGTON

BAUM BRIDGE

PARNELL ISLAND

WELLS ISLAND

RANGE 14 (A, B) SEE SHEET CN101

Hatteras

Inlet

Hyde CountyCarteret County

Ocracoke Silver Lake Harbor

Ocracoke

Inlet

BIG FOOT SLOUGH ISLAND SEE SHEET CN109

BIG FOOT SLOUGH CHANNEL, SEE CN108

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

N O R T H C A R O L I N A

SITES

SCALE: 1"=1.5 MILE

GI01

N M

, P

R O

T O

F D

S G

N M

, P

R O

T O

A N

O F

D R

G S.

dw g

INDEX OF DRAWINGS

Sheet Number Sheet Title

G001 COVER SHEET

GI01 LOCATION MAP, PROJECT OVERVIEW AND INDEX OF

DRAWINGS

CN101 RANGE 14A AND 14B (CONTRACT OPTION)

CN102 RANGE 16

CN103 RANGE 17

CN104 RANGE 17 EXTENSION

CN105 ISLAND H

CN106 ISLAND D

CN107 ISLAND L AND ISLAND MN

CN108 BIG FOOT SLOUGH CHANNEL

CN109 BIG FOOT SLOUGH ISLAND PLACEMENT AREA

Feet 0 7920 15840

SCALE: 1"=1.5 MILE

Feet 0 7920 15840

AutoCAD SHX Text 0.8

AutoCAD SHX Text

-9 1

-9 0

-8 1

-6 2 -8 7

-7 2

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-3 9

-8 1

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-6 8

-9 0

-3 6

-7 5

-7 6

-14 5

-10 2 -8 1

-8 2 -9 1

-5 5

-7 6

-7 9 -8 4

-3 5

-9 3

-5 8

-7 7

-9 1

-6 2

-8 1

-10 9

-8 3

-5 2

-7 3

-9 9

-6 4

-7 2

-11 5

-6 2

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-6 5

-12 0

-10 7

-6 7

-7 4

-14 8

-7 7 -8 1

-5 4-6 6

-9 9

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-11 1

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-3 1-5 3

-6 8

-13 4

-10 3-7 3

-5 3

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-5 9

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-8 9

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-12 7

-10 1

-8 8

-12 6

-5 9 -10 1

-4 6

-4 4

-5 5

-7 1

-3 2

-9 6

-12 4

-11 2

-7 2

-6 3

-10 8

-7 0

-8 5

-13 0

-7 8

-8 4

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-10 5

-7 9

-8 9

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-14 5

-14 3

-10 5

-12 3

-10 5

-5 8

-12 1

-9 2

-6 5

-6 1

-13 8

-5 0

-8 6

-10 2

-7 6

-8 1

-9 1

-10 5

-11 0

-5 9

-9 4

-10 9

-9 8

-10 2

-5 1

-6 2 -8 2

-10 8

-6 9

-8 9

-11 2

-4 6

-10 3

-6 3

-14 3

-4 7

-10 6

-14 0

-16 0

-14 8

-6 0

-4 1

-7 1

-9 6

-7 0

-12 5

-5 9

-12 2

-8 7

-8 3

-3 4

-9 7

-8 7

WANCHESE

WANCHESEMARSH

"DM5"

"LT6"

779000

3003000

"DM3"

"LT16"

"B2"

"B1"

"DM4"

G E 14

TEO

, N C

778000

3005000

0+00

4+62.98

0+005+0010+0015+0020+0025+0030+0031+21.10 RANGE 14A

RANGE 14C RANGE 14B

CENTERLINE

CENTERLINE OFFSET (TYP.)

N: 779238.6 E: 3005359.1

N: 779050.7 E: 3005290.4

N: 778960.0 E: 3005331.8

N: 778889.3 E: 3005524.5

N: 777822.8 E: 3002640.2

N: 777726.2 E: 3002669.0

N: 777760.6 E: 3002203.8

N: 777657.3 E: 3002188.9

100'

-9

-9 "B2a"

V-1 V-2

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).

2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED MEAN

LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.

3. PROJECT SURVEYED 24 MAY 2022 WITH DISTRICT VESSEL "KNOWLTON" USING RTK GPS

HORIZONTAL POSITIONING EQUIPMENT AND 200KHZ SOUNDING EQUIPMENT.

4. TIDE GAUGE LOCATED AT: DM5

5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS MADE ON THE

DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS

EXISTING AT THAT TIME.

6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL. ACCURACY +/- 3 METERS. EASTING AND NORTHING

COORDINATES ARE IN FEET.

DESCRIPTION EASTING NORTHING

"lt16" 3005622.90 779113.48 "lt6" 3002691.01 777863.43 "dm4" 3003872.22 778404.94 "b2a" 3004675.35 778749.28 "b2" 3005222.84 779060.94 "dm5/tide" 3002677.97 777687.07 "dm3" 3004190.27 778397.35 "b1" 3005389.50 778896.34

7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS ISLAND "H". SHEET

SHEET CN105 FOR LOCATION OF PLACEMENT AREA.

LEGEND:

DREDGING AREA (OPTION)

SOUNDINGS

NAVIGATION AIDS

BORINGS

-10.0

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

RANGE 14A AND 14B

BID OPTION NO. 1

CN101

G E

(C O

4B .d w g

CHANNEL PRISM

LINE (TYP.)

1-FO

ALLO

ABLE

VER

EPTH

100'

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

RANGE 14A AND 14B

BID OPTION NO. 2

CHANNEL PRISM

LINE (TYP.)

2-FO

ALLO

ABLE

VER

EPTH

12'

100'

-4

-2

-11

-9

-4

-11

-7 7 -11

-2

-4

-5

-12

-7

-8

-4

-10

-4

-11

-7

-12

-8

-4

-12

-3

-9

-4

-7

-10

-6

-12

-9

-4

-8

-11

-6

-3

-13

-7

-4

-7

-12

-6

-10

-11

-10

-11

-8

-1

-9

-10

-9

-10

-12

-8

-10

-7

-10

-5

-12

-10

-9

-11

-5

-13

-10

-5

-10

-11

-4

-7

-5

-7

-10

-12

-5

-12

-6

-4

-12

-9

-8 7-11

-10

-7

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-8

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-9

-6

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-9

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-9

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-7

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-3

-10

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-8

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-3

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-5

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-9

-12

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-6

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-7

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-5

-11 2 -12

-10

-11

-10

-6

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-7

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7 -12

-7

-12

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-4

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-9

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-6

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9-12

-10

-7

-10

-7

-8

-13

-5

-1

-11

-9

-11

-12

-4

-10

0-10

-12

-4

-8

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-10

-12

-8

-9

-4

-9

-13

-9

-3

-10

-5

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-9

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-7

-9

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-10

-2

-10

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-9

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-9

RANGE 15

N: 762766.1 E: 3013295.6

N: 762826.1 E: 3013377.5

0+00 5+00 10+00 15+00 20+00 25+00 30+00 35+00 40+00 44+99.92

ISLAND "D"

"54"

"1"

"4" "2"

RANGE 16

RANG

E 17

N: 760607.9 E: 3015671.9

N: 760535.9 E: 3015602.3

N: 759680.5 E: 3016631.1

N: 759656.0 E: 3016512.3

CENTERLINE

CENTERLINE OFFSET

-12

-12-12 -12

-12-12

"55"

V-7

V-

W S-

-V

-1

W S-

-V

-1

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).

2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE

TO THE 1983-2001 TIDAL EPOCH.

3. PROJECT SURVEYED 12 MAY 2022 WITH DISTRICT VESSEL "KNOWLTON" USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND

200KHZ SOUNDING EQUIPMENT.

4. TIDE GAUGE LOCATED AT: OIFC

5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS MADE ON THE DATE INDICATED AND CAN ONLY

BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS EXISTING AT THAT TIME.

6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL. ACCURACY +/- 3 METERS. EASTING AND NORTHING COORDINATES ARE IN FEET.

DESCRIPTION EASTING NORTHING

"dm2" 3015220.85 761134.25 "lt4" 3013401.97 762865.25 "lt1" 3015054.28 760973.85 "ltb54" 3016344.92 759744.10 "ltb55" 3016181.23 759560.91

7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS ISLAND "D". SHEET SHEET CN106 FOR LOCATION OF

PLACEMENT AREA.

LEGEND:

DREDGING AREA (BASE)

SOUNDINGS

NAVIGATION AIDS

BORINGS

-10.0

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

MANTEO INTERIOR CHANNELS CN102

G E

C N

G E

.d w g

CHANNEL PRISM

LINE (TYP.)

2-FO

ALLO

ABLE

VER

EPTH

-4

-6

-2

-8

-11

-9

-2

-4

-6

-5

-2

-5

-10

-4

-5 7 -7

-4

-1

-11

-7

-10

-5

-10

-8

-0

-8

-4

-10

-6

-5

-4

-3

-4

-0

-6

-7

-10

-6

-9

-4

-9

-8

-11 0-11

-5

-6

-10

-9

-5

-9

-5

-0

-4

-10

-4

-7

-9

-11

-8

-5

-6

-10

-11

-10

-9

-6

-5

-8

-5

-1

-9

-10

-8

-11

-10

-3

-2

-5

-1

-9

-10

-5

-3

-10

-8

-6

-5

-10

-1

-10

-5

-0 7 -0

-4

-7

-5

-7

-5

-11

-10

-11

-4

-8

-4

-3

-7

-5

-10

-5

-3

-10

-6

-5

-8

-9

-6

-5

-8

-7

-9

-10

-5

-3

-2

-6

-5

-4

-11

-3

-6

-5

-10

-7

-3

-5

-9

-7

-10

-6

-3

-7

-4

-5

-9

-1

-3

-11

-7

-9

-6

-3

-5

-10

-5

-7

-3

-10 6-9

-10

-4

-10

-9

-6

-9

-0

-7

-5

-7

-9

-7

-10

-5

-10 2 -8

-10

-9

-3

-11

-5

-11

-6

-10

-11

-10

-5

-11

-3

-10

-3

-6

-10

-6

-5

-3

-7

-10

-11

-1

-11

-9

-4

-7

-9

-5

-10

-4

-10

-6

-10

-4

-1

-10

-8

-11

-9

-6

-0

-9

-7

-9

-5

-6

-4

-3

-10

-5

-7

-9 1-9

-4

-11

-10

-9

-3

-7

-8

-3

-6

-8

-10

-7

-4

-11

-6

-4

-10

-5

-9

-5

-8

-6

-2

-11

-10

-5

-2

-10

-9

-5

-9

-8

-1

-8

-9

-4

-6

-2

-10

-6

-3

-10 8 -10

-9

-11

-9

-6

-10

-8

-10

-6

-8

-10

-7

-4

-10

-9

-2

-4

-9

-6

-9

-4

-10

-6

-4

-9

-5

-10

-6

-3

-9

-4

-9

-10

-4

-10

-9

-10

-9

-3

-4

-10

-5

-10

-3

-10

-4

-10

-4

-11

-10

-3

-8

-11

-10

-8

-10

-11

-7

-5

-9

-6

-10

-8

-6

-9

-8

-7

-6

-3

-8

-5

-8

-6

-9

-3

-6

-7

-6

-11

-9

-10

-9

-7

-10

-3

-7

-12

-10

-5

-10

-7

-4

-8

-6

-10

-8

-10

-7

-7 9 -1

-6

-5

-4

-5

-3

-5

-7

-5

-3

-6

-10

-4

-3

-11

-10

-6

-7

-6

-8

-6

-0

-9

-10 3-2

-10

-0

-10

-6

-9

-4

-5

-3

-6

-8

-11

-4

-11

-9

-10

-9

-3

-10

-11

-10 6 -6

-10

-6

-8

-9

-10

-7

-8

-6

-5

-1

-4

-6

-5

-4

-8

-9

-7

-10

-2

-8

-9

-6

-4

-6

-10

-9

-3

-10

-5

-11

-7

-9

-6

-8

-10

-4

-2

-3

-12

-3

-8

-10

-9

-4

-8

-6

-10

-5

-10

-11

-10

-3

-5

-10

-11

-5

-7

-9

-11

-9

-7

-0

-9

-8

-11

-0

-10

-5

-1

-10

-7

-10

-1

-10

-7

-4

-0

-5

-10

-8 7 -9

-5

-1

-6

-5

-11

-10

-7

-8

-7

-11

-4

-9

-6

-9

-10

-2

-4

-9

N: 759680.5 E: 3016631.1

N: 759656.0 E: 3016512.3

"49" "53"

"44" "46" "50"

"52"

"41" "54"

"47"

0+005+0010+0015+0020+0025+0030+0035+0040+0045+0050+0055+0055+76.91

N: 754503.9 E: 3014443.6

N: 754581.6 E: 3014322.7 N: 754783.9

E: 3014453.8

RANGE 17

RANGE17 EXT

CENTERLINE

CENTERLINE OFFSET

100'

"55"

V-8V-9

WS-07-V-17

WS-07-V-18

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).

2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE

TO THE 1983-2001 TIDAL EPOCH.

3. PROJECT SURVEYED 12 MAY 2022 WITH DISTRICT VESSEL "KNOWLTON" USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND

200KHZ SOUNDING EQUIPMENT.

4. TIDE GAUGE LOCATED AT: OIFC

5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS MADE ON THE DATE INDICATED AND CAN ONLY

BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS EXISTING AT THAT TIME.

6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL. ACCURACY +/- 3 METERS. EASTING AND NORTHING COORDINATES ARE IN FEET.

DESCRIPTION EASTING NORTHING

"ltb54" 3016344.92 759744.10 "lt50" 3015632.35 757184.26 "lt52" 3016298.60 758773.67 "lt41" 3014286.35 754617.35 "b44" 3014473.71 754521.99 "dm47" 3014906.62 755926.11 "dm46" 3014755.36 755271.37 "dm53" 3016236.26 759130.69 "dm49" 3015205.59 756682.18 "ltb55" 3016181.23 759560.91

7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS ISLAND "L" OR "MN". SHEET SHEET CN107 FOR

LOCATION OF PLACEMENT AREA.

LEGEND:

DREDGING AREA (BASE)

SOUNDINGS

NAVIGATION AIDS

BORINGS

-10.0

C H

E C

ATCHLINE

SEE CN102

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

MANTEO INTERIOR CHANNELS CN103

G E

C N

G E

.d w g

CHANNEL PRISM

LINE (TYP.)

2-FO

ALLO

ABLE

VER

EPTH

-12

-11 2

-10

-2

-14

-10

-7

-9

-6

-8

-2

-14

-3

-6

-4

-3

-14 1-14

-8

-9

-6

-3

-9 7 -6

-8

-4

-6

-15

-5

-3

-9

-1

-10

-8

-9

-13

-8

-4

-2

-8

-6

-13

-6

-8

-9

-14

-2

-6

-10

-10 9 -7

-7

-6

-3

-2

-13

-7

-14 4 -9

-3

-12

-7

-14

-10

-14

-7

-5

-8

-10

-8

-4 1-10

-1

-9

-2

-9

-10

-9

-10

-7

-12 1 -1 8

-6

-9

-1 6

-8

-7

-6

-3

-7

-13

-6

-2

-9

-7 2-4

-9

-12

-8

-12

-5

-12

-9

-13 3 -9

-11 9

-8

-7

-14 3 -8

-7

-10

-8

-1 7

-8

-7

-5

-1 7

-10

-6

-9

-13

-6

-3

-7

-5

-9

-8

-12

-10

-4

-9

-7

-10

-9

-12

-11 5

-8

-11 9

-7

-12

-10

-11 5

-11

-6

-8

-3

-8

-9

-12

-9

-14

-5

-1 5

-12

-9

-4

-9

-11 9

-10

-2

-14

-3

-14

-11 5

-10

-7

-8

-10 4-10

-6

-9

-7

-12

-10

-9

-11

-6

-11 7

-14

-5

-7

-10 9 -15

-12

-11 6

-7

-9

-3

-9

-11 1

-3

-7

-12

-8

-11 2

-10

-9

-8

-10

-9

-13 5 -2

-3

-11 1

-6

-10

-11 2

-7

-9

-10

-6

-7

-9

-7

-11 9

-13

-6

-14

-9

-13 4 -12

-13

-10

-13

-7

-10

-6

-12

-7

-8

-14

-7

-8

-6

-9

-6

-4

-7

-12

-5

-2

-3

-5

-7

-1 9

-10

-8

-7

-12

-10

-11 8

-3

-10

-13

-8

-9

-1

-8

-4

-13

-6

-10

-9

-3 6-11 6

-9

-7

-6

-10

-11 0

-9

-6

-12

-3

-6

-12

-10

-7

-11 7

-9

-11 8

-12

-10

-12

-9

-7

-9

-6

-9

-8

-14

-7

-9

-11 5

-6

-9

-8

-12 3 -1 6

-8

-9

-7 9-13

-7

-6

-14

-6

-8

-9

-13

-10

-14

-9

-7

-6

-8

-11 6

-11 2

-14

-7

-9

-11 3

-8

-9

-12

-7

-8

-7

-3 3 -7

-9

-5

-9

-4

-8

-9

-10

-9

-8

-7

-11 2

-10

-11 9

-5

-9

-6

-9

-11 1

-3

-11 0-13

-8

-7

-4

-9

-10

-7

-8

-6

-13

-8

-10

-2 7-2

-2

-9

-4

-5

-7

-8

-6

-3

-7

-6

-7

-5

-7

-10

-8 1-11 7

-8

-3

-12

-8

-10

-12

-5

-3

-7

-9

-6

-10

-6

-5

-8

-10

-8

-10

-9

-7

-9

-7 1 "41"

"39"

"42"

"40"

0+00 5+0010+0015+0020+0025+00

25+15.03 RANGE 17 EXTENSION

RANGE 17

OLD HOUSE RANGE 1

ISLAND "L"

N: 754377.9 E: 3014191.8

N: 752705.4 E: 3012655.5

N: 752653.0 E: 3012743.1

N: 753018.6 E: 3012943.2

N: 752950.9 E: 3013016.8

N: 754581.6 E: 3014322.9

N: 754503.9 E: 3014443.6

CENTERLINE

CENTERLINE OFFSET

-12 -12

"44"

"39A"

0' V-10

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).

2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE

TO THE 1983-2001 TIDAL EPOCH.

3. PROJECT SURVEYED 24 MAY 2022 WITH DISTRICT VESSEL "KNOWLTON" USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND

200KHZ SOUNDING EQUIPMENT.

4. TIDE GAUGE LOCATED AT: DM5

5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS MADE ON THE DATE INDICATED AND CAN ONLY

BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS EXISTING AT THAT TIME.

6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL. ACCURACY +/- 3 METERS. EASTING AND NORTHING COORDINATES ARE IN FEET.

DESCRIPTION EASTING NORTHING

"b44" 3014488.06 754549.88 "lt41" 3014286.05 754619.36 "b42" 3013949.46 753906.71 "b40" 3012962.04 752832.04 "ltb39" 3013083.84 753302.58 "b39a" 3013669.80 754008.30

7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS ISLAND "L" OR "MN". SHEET SHEET CN107 FOR

LOCATION OF PLACEMENT AREA.

LEGEND:

DREDGING AREA (BASE)

SOUNDINGS

NAVIGATION AIDS

BORINGS

-10.0

C H

C N

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

MANTEO INTERIOR CHANNELS CN104

G E

C N

G E

N .d w g

CHANNEL PRISM

LINE (TYP.)

2-FO

ALLO

ABLE

VER

EPTH

ISLAND "H"

R A

N G

RANGE 14

TOP EXIST.

WEIR

29.00'

INV 13.3'

TOP EXIST.

WEIR

29.00'

INV 15.3'

SPILLWAY NORTH

SPILLWAY

SOUTH

SANDBAG AREA

RIP RAP AREA

EXISTING 30" OD HDPE

RIP RAP AREA

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

N A

D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. PHOTOGRAPHY DATE 12 FEBRUARY 2022, COPYRIGHT MAXAR TECHNOLOGIES

2. ISLAND H IMPROVEMENTS ARE BEING COMPLETED BY DARE COUNTY. THE EXISTING CAPACITY

OF ISLAND H, PRIOR TO IMPROVEMENTS IS APPROXIMATELY 36,000 CY. IT IS ANTICIPATED THAT

IMPROVEMENTS WILL BE COMPLETED BY MID-NOVEMBER 2022. THE CAPACITY OF ISLAND H

ONCE IMPROVEMENTS ARE COMPLETED WILL BE APPROXIMATELY 100,000 CY.

3. PRIOR TO THE COMMENCEMENT OF ANY WORK ON ISLAND H OR ANY PLACEMENT OF DREDGED

MATERIAL INTO ISLAND H AFTER MARCH 31, 2023, THE CONTRACTOR SHALL MEET ONSITE WITH

THE CONTRACTING OFFICER'S REPRESENTATIVE AND A REPRESENTATIVE FROM THE NORTH

CAROLINA WILDLIFE RESOURCES COMMISSION TO INSPECT THE DIKE AND PLACEMENT AREA

FOR NESTING BIRDS. SHOULD ANY NESTING ACTIVITY BE OBSERVED, THE CONTRACTING

OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE SHALL BE CONTACTED FOR

INSTRUCTIONS ON HOW TO PROCEED WITH ADVERSELY IMPACTING THESE NESTS. IF IT IS

DETERMINED THAT ADVERSE IMPACTS CANNOT BE AVOIDED, DISPOSAL INTO ISLAND H

PLACEMENT AREA WILL NOT BE ALLOWED UNTIL ALL NESTING ACTIVITY IS COMPLETE OR UNTIL

SEPTEMBER 1, 2023.

4. A SAFE ACCESS PLAN DETAILING HOW SAFE ACCESS TO ISLAND H WILL BE ESTABLISHED AND

MAINTAINED THROUGHOUT THE CONTRACT DURATION SHALL BE SUBMITTED TO THE

CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE FOR APPROVAL PRIOR TO

COMMENCEMENT OF ANY WORK ON THE PLACEMENT ISLAND.

5. A MINIMUM OF FIFTEEN (15) DAYS PRIOR TO THE COMMENCEMENT OF DREDGING AND

PLACEMENT OPERATIONS, THE CONTRACTOR SHALL COORDINATE THE PIPELINE ALIGNMENT

AND THE DISCHARGE POINT FOR APPROVAL WITH THE CONTRACTING OFFICER AND HIS/HER

DESIGNATED REPRESENTATIVE ONSITE..

6. THERE ARE 2 EXISTING SPILLWAY SYSTEMS LOCATED AT THE SOUTH END OF THE DISPOSAL

AREA. EACH SPILLWAY SYSTEM CONSISTS OF A 4'X4' STEEL FRAMES RISER BOX CONNECTED

TO A 30" DIAMETER HDPE PIPE THAT EXTENDS THROUGH THE DIKE EMBANKMENT TO THE

WATERS BEYOND THE SHORELINE OF THE ISLAND.

7. THE CONTRACTOR SHALL FURNISH AND INSTALL TIMBER STOPLOGS IN EACH SPILLWAY RISER

TO PROVIDE PROPER DRAINAGE OF RETAINED WATER FROM THE PLACEMENT AREA. THE

CONTRACTOR SHALL PROVIDE NEW STOPLOGS FOR EACH SPILLWAY. ALL COSTS FOR LABOR,

MATERIAL, EQUIPMENT, TOOLS, SUPPLIES AND INCIDENTALS NECESSARY TO FURNISH AND

INSTALL THE TIMBER STOPLOGS SHALL BE INCLUDED IN THE CONTRACT PRICE FOR

MOBILIZATION AND DEMOBILIZATION AS LISTED IN THE BID SCHEDULE. CONTRACTOR TO

VERIFY LENGTH AND QUANTITY OF STOPLOGS PRIOR TO ORDERING.

3X6 STOPLOG

2" MAX

51 2"

2" MIN

16"

8" 3

1 2"

4" 3

4"1 2"

2" x 6" GALV. LAG BOLT

6" FROM EACH END

BLUNT END WITH

HAMMER OR BY

GRINDING & TOUCH-UP

PAINT W/ ZINC-RICH

PRIMER

TIMBER STOPLOG DETAIL

N.T.S.

STOPLOG NOTES:

1. NEW STOPLOGS SHALL BE #1 DENSE SOUTHERN PINE AND SHALL BE PRESSURE TREATED

IN ACCORDANCE WITH AWPA U1 (USE CATEGORY UC5B WATERBORNE PRESERVATIVE)

AFTER FABRICATION. UNTREATED WHIT OAK MAY ALSO BE USED.

2. STOPLOG LENGTH SHALL BE APPROXIMATELY 4'. THE CONTRACTOR SHALL MEASURE THE

CLEAR WIDTH OF EACH BAY AT EACH STRUCTURE (FACE OF CHANNEL WEB TO FACE OF

CHANNEL WEB) PRIOR TO ORDERING STOPLOGS. CONTRACTOR SHALL DETERMINE THE QUANTITY

OF STOPLOGS REQUIRED.

3. NEW STOPLOGS SHALL HAVE LAG SCREW INSTALLED AS SHOWN 6" FROM EACH END.

4. APPLY BRUSH ON WOOD PRESERVATIVE TO ALL CUT ENDS.

5. THE CONTRACTOR SHALL INSTALL SPILLWAY STOPLOGS AS NECESSARY TO ENSURE THE

RELEASE OF RETAINED WATER FROM THE DISPOSAL AREA IS IN COMPLIANCE WITH THE

CONTRACT WATER QUALITY STANDARDS. CN105

N D

C N

N D

H .d w g

RANGE 15

ISLAND "D"

RANGE 16

RANG

E 17

-0

40 1-0

1 1

-0

1 3

1 1

-0

-0 2-0

5 1 6 14

38 1

9-0

-0

1 0 5 1

-0

1 4

3 1

3 5

5 1

-0

2 -0

-0

0 1

-0

1 0

1 8

1 3

1 2

1 5

1 4

1 6

1 2

-0

1 8

3 29

11 0-0

3-0

1 2

-0 3-0

1 02

7 1

-0

1 9

4 11 5-0

-0

8-0

1 0-0

1 6-0

1 7

6 6

1 1

1 4

1 83

-0

-0 2-0

4 1 1 2

1 2

-0

71 8

8 1

71 7-0

-0

1 8

7 1

1 7

-0

1 6

0-0

-0

1 4

3 1

-0

1 9

8 1

4 1

51 5-0

-0

1 3

1 2

4 1

5 1

1 2

20 1 1 6 4 1

7 1

3-0

-0

1 4

2 1

-0

1 2

91 50 8-0

-0

1 7

1 4

-0

1 6

9 13 1

4 1

21 8-0

-0

1 6

-0

1-0 11 3

3 11 6-0

-0

1 3

-0 1-0

5 11 5-0

-0

1 8

5 1

-0 1-0

6 8

41 5-0

-0

1-0 11 62

7-0

1 1 0

8-0

5 3 1

73 14

1 0

1 1

N D

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

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N G

N U

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G C

O D

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2P M

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-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. PHOTOGRAPHY DATE 12 FEBRUARY 2022, COPYRIGHT MAXAR TECHNOLOGIES

2. SURVEYING AND MAPPING BY US ARMY CORPS OF ENGINEERS.

3. ALL ELEVATIONS ARE BASED ON NAVD 88.

4. ALL COORDINATES ARE BASED ON STATE PLANE COORDINATE SYSTEM 1983.

5. FIELD SURVEY PERFORMED 28 MARCH 2022

6. A MINIMUM OF FIFTEEN (15) DAYS PRIOR TO PLACEMENT OF PIPE ON THE ISLAND, THE CONTRACTOR SHALL MEET ONSITE WITH THE CONTRACTING OFFICER'S

REPRESENTATIVE AND A REPRESENTATIVE FROM THE NORTH CAROLINA WILDLIFE RESOURCES COMMISSION TO DETERMINE THE PIPELINE ROUTE AND INITIAL DISCHARGE POINT. THE CONTRACTOR SHALL AVOID IMPACTS TO SUBMERGED AQUATIC VEGETATION (SAV) TO THE MAXIMUM EXTENT POSSIBLE. THE EFFLUENT PIPE DISCHARGE POINT SHALL NOT BE DIRECTED TOWARDS AN AREA OF SAV. THE CONTRACTOR SHALL PLACE MATERIAL IN A MANNER THAT MINIMIZES EXPANDING THE ISLAND FOOTPRINT TO THE GREATEST EXTENT POSSIBLE. THE CONTRACTOR SHALL EVENLY GRADE PLACED MATERIAL TO A MAXIMUM ELEVATION OF 15-FEET WITH A NATURAL SLOPE. SEE PARAGRAPH "PLACEMENT OF DREDGE MATERIAL" IN SPECIFICATION SECTION 35 20 23 FOR ADDITIONAL PLACMENT AREA REQUIREMENTS.

7. FOR LOCATION OF PLACEMENT AREA SEE SHEET GI01. FOR DETAILS OF AREAS TO BE DREDGED, SEE SHEET CN102.

CN106

C N

N D

D .d w g

APPROX. SAV LIMITS

ISLAND "MN"

ISLAND "L"

OLD HOUSE CHANNEL RANGE 1 RANGE 17EXTENSION

OLD HOUSE CHANNEL

RANGE 2

PRIVATE

PROPERTY

PROPERTY LINE

INSTALL TEMPORARY SAFETY FENCE

5-FEET FROM PROPERTY LINE

DISPOSAL AREA

-0

-0 8 -0

9 -0 7 -0

7 -0 7 -0

8 -0

-0

-0 6 -0

6 -0 6 -0

-0

-0 1 1

-0

-0 1 -0

-0

7 0

-0 11 0

-0

4 -0

-0 5 -0

0 3

-0 1 0

4 2

3 4

3 5

7 4

6 5

2 3

6 8

9 8

2 4

2 10

3 7

1 4

5 6

3 5

2 6

7 5

8 15

5 7

2 6

2 16

0 18

5 7

5 15

9 9

1 10

2 8

2 5

3 11

7 14

0 8

6 20

-0

-0 5-0

-0

-0 6-0

-0

5 9

1 10

8 16

3 16

-0

0 2

-0

8 2

-0

0 6 9 4

-0

N: 753219.7 E: 3012773.9

N: 754133.8 E: 3011770.6

APPROX. SAV LIMITS

APPROX. SAV LIMITSAPPROX. SAV LIMITS

APPROX. SAV LIMITS

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

N D

N G

N U

E W

, N O

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D R

G C

O D

G FI

H . W

2P M

D Y

2P M

M S1

-0

Feet 0 200 400

SCALE: 1"=200'

NOTES:

1. PHOTOGRAPHY DATE 12 FEBRUARY 2022, COPYRIGHT MAXAR TECHNOLOGIES

2. SURVEYING AND MAPPING BY US ARMY CORPS OF ENGINEERS.

3. ALL ELEVATIONS ARE BASED ON NAVD 88.

4. ALL COORDINATES ARE BASED ON STATE PLANE COORDINATE SYSTEM 1983.

5. FIELD SURVEY PERFORMED 29 MARCH 2022 (ISLAND "MN") AND 14 MARCH 2022 (ISLAND "L").

6. A MINIMUM OF FIFTEEN (15) DAYS PRIOR TO PLACEMENT OF PIPE ON THE ISLANDS, THE CONTRACTOR SHALL MEET ONSITE WITH THE CONTRACTING OFFICER'S

ADDITIONAL PLACEMENT AREA REQUIREMENTS.

7. FOR LOCATION OF PLACEMENT AREA SEE SHEET GI01. FOR DETAILS OF AREAS TO BE DREDGED, SEE SHEETS CN103 AND CN104.

8. PRIOR TO COMMENCEMENT OF PLACEMENT OPERATIONS ON ISLAND "L", THE CONTRACTOR SHALL FURNISH AND ERECT A TEMPORARY SAFETY FENCE

OFFSET 5-FEET FROM THE PROPERTY LINE. DURING PLACEMENT THE CONTRACTOR SHALL PLACE NO MATERIAL BEYOND THE SAFETY FENCE LIMITS SHOWN ON ISLAND "L". SHOULD MATERIAL EXTEND BEYOND THESE LIMITS, THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE AND MAY BE RESPONSIBLE FOR REMOVING MATERIAL DEPOSITED BEYOND THESE LIMITS. UPON COMPLETION OF PLACEMENT OPERATIONS, THE CONTRACTOR SHALL REMOVE THE TEMPORARY SAFETY FENCE FROM THE ISLAND. SEE PARAGRAPH "TEMPORARY SAFETY FENCING" IN

SPECIFICATION SECTION 35 30 23 FOR ADDITIONAL REQUIREMENTS.

CN107

N D

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-5

-6

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-8

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3 -2

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-9

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3-6

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-3 9 -4

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-2 8 -3

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-3 3 -3

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-3 3 -3

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-7

-5-5-5-4

0+00 5+00 10+00 15+00 20+00 25+00 30+00 35+00 40+00 45+00 50+00 55+00

N: 527209.8 E: 2891724.5

N: 527147.4 E: 2891588.0

"10B"

"10d"

"9c"

"10c"

"11" "13"

"14bf" "12"

-12

MATERIAL ABOVE

WATERLINE

BIG FOOT SLOUGH CHANNEL

CENTERLINE OFFSET

CENTERLINE

-1

-9

-7

-6

-5

-4

-3

-2

-3

-4

-4 3-4

-4

-5

-6

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-5

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-5 5-5

-5

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-5

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-6

-5

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-7

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-7

-6

-7

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-6 7-6

-7

-6

-6 8-6

3-6

-7

-6

-9

-7

-6

-5

-6

-5

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-3

-4

-3

-4

-3

-4

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-9

-1

-2

-1

-9

-8

-7

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-4

-5

-4

-5

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-5

-4

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-8

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-8

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-8

-9

-1

-2

-1

-9

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-8

-7

-8

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-8

-9

-1

-9

-1

-9

-8

-7

-8

-9

-8

-9

-1

-2

-1

-9

-8

-9

-1

-9

-8

-7

-6

-7

-8

-9

-1

-9

-1

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-1

-9

-1

-9

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-5

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-8

-9

-1

-2

-1

-2

-1

-9

-8

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-6

-5

-4

-3

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-5

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-7

-8

-9

-1

8 -1

-6 7-6

1-2

-4 5-5

3-2

-4

-7

-1

-9

-8

-7

-6

-5

-4

-3

-4

-5

-6

-7

-6

-7

-8

-9

-1

-9

-8

-9

-1

-9

-8

-7

-4

-3

-3 2-3

-4

-6

-5

-4

-5

-6

-7

-8

-9

-8

-9

-1

-9

-8

-7

-6

-5

-4

-3

-2 9 -2

-3

-4

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-8

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-5

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-3

-4

55+00 60+00 65+00 70+00 75+00 80+00 81+35.01

N: 519850.8 E: 2895192.0

N: 519780.4 E: 2895054.5

"9B"

"9"

"9A"

"10a"

BIG FOOT SLOUGH ISLAND

-12

BIG FOOT SLOUGH CHANNEL

NOTES:

1. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO LOCAL M.L.W.

2. PROJECT SURVEYED 4 APRIL 2022 WITH DIRECT SURVEY VESSEL"KNOWLTON" USING RTKS GPS

HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ SOUNDING EQUIPMENT.

3. TIDE GAGE LOCATED AT: LIGHT 9

4. HORIZONTAL DATUM: NAD 1983

5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULTS OF SURVEYS MADE ON THE

DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS

EXISTING AT THAT TIME.

6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL. ACCURACY +/- 3 METERS. LATITUDE AND

DESCRIPTION EASTING NORTHING

"dm9b" 2894359.30 521703.39 "tideboard" 2900771.57 510196.56 "lt9" 2895211.69 518795.65 "ltb10b" 2893568.81 522724.05 "lt9a" 2894958.13 520226.29 "dm8a" 2895902.85 517379.15 "dm10a" 2894663.26 521796.60 "b10d" 2893146.82 523274.71 "b9c" 2893191.69 522470.12 "b10c" 2893190.67 522827.86 "ltb11" 2893023.95 523878.63 "lt13" 2892599.87 524999.54 "lt14bf" 2892303.34 526007.63 "dm12" 2893299.08 523860.36

7. THE GOVERNMENT FURNISHED PLACEMENT ISLAND FOR DREDGED MATERIAL IS BIG FOOT SLOUGH

ISLAND. FOR LOCATION OF THE PLACEMENT ISLAND SEE SHEET CN109.

LEGEND:

DREDGING AREA (BASE)

SOUNDINGS

NAVIGATION AIDS

BORINGS

-10.0

Feet 0 200 400

SCALE: 1"=200'

C H

CN108

F O

O T

U G

H C

C N

F O

O T

U G

H C

.d w g

M.L.W.

NOT TO SCALE

REQUIRED

(TYP)

DEPTH

TYPICAL DREDGING SECTION

BIG FOOT SLOUGH CHANNEL

CHANNEL PRISM

LINE (TYP.)

2-FO

ALLO

ABLE

VER

EPTH

12'

150'

C O

N O

C R

O N

D B

N N

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D B

D R

B Y:

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SHEET ID

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US Army Corps of Engineers

C E

D R

A N

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C H

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U .S

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R S

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G C

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H . W

2P M

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2P M

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-0

BIG FOOT SLOUGH CHANNEL

BIG FOOT SLOUGH ISLAND

0 1

0 3

0 1

0 0

-0 10 20 2

0 1 1 4

1 4 1 6

1 3 1 7 0 1

-0 1 1 6

0 0 1 72 6 1 73 0

0 0 -0 1 1 62 9

3 02 1 -0 1

0 0 1 92 81 73 4

0 0 2 91 4 0 0 -0 1

1 53 8 3 51 6 0 0

3 41 7 0 0

1 7 -0 1 -0 11 6 2 2

0 0 -0 1 1 83 34 59 510 79 57 13 43 43 83 23 94 65 06 64 0

2 9 3 03 7

5 1 7 07 64 9

4 03 7

5 53 9 3 5

3 4 3 7

3 4

3 44 35 7 5 3

4 4

4 2

6 2 4 0

3 13 24 02 8 2 9

2 1 1 5

1 4

2 01 0

1 70 1

2 71 8

2 81 20 0

2 5

2 2

2 4

2 6

2 6 2 5

3 5 2 6

3 0 3 5 4 5

3 1

3 6

5 3

4 4

3 9 4 56 15 23 6

3 0 3 2

4 5 6 5

4 2 3 54 1 8 6 8 4 7 0

5 64 3 6 0

4 1 5 6

3 2

3 7

3 3

2 5

2 5 3 6

2 4 3 0 2 5

2 4 2 2

1 9

1 7 1 82 2

2 4

0 01 31 7

0 11 31 4 1 8

2 01 7

1 8

1 9

2 0 2 33 4

2 7 2 63 22 4

2 3

2 4

2 3 2 7

3 8 3 3

2 7

3 2

4 3

2 83 6

2 6 2 6

3 51 91 8 -0 1

3 22 0 1 5-0 1

2 71 2 1 4 -0 3 -0 1

1 6 0 0 1 5

0 01 3 0 71 2

1 72 5

2 1

2 2

2 3

2 2

2 0

1 9

2 0

1 8

1 7

1 3 1 21 21 30 2

0 31 31 3 1 3

1 5

1 7

1 8

1 9

2 0

2 1

2 1 2 3

2 3 2 1

2 1

1 8 2 1

1 91 5

1 2

1 1 1 0

0 6

0 2 0 1

-0 10 5 0 50 1

0 3-0 10 3-0 10 1-0 20 4-0 2 0 5-0 1 -0 10 6

-0 30 7 0 70 90 8-0 30 80 9-0 2-0 31 2

0 8 0 00 0

0 8 1 1-0 4-0 4

1 20 8 0 00 20 91 1-0 4-0 41 1

0 5

0 3 -0 1

0 3

0 7

0 9

0 8

1 1

1 5

1 6

1 7

1 5

1 6

1 5

1 4

1 3

1 2

1 3

1 2

1 3 0 91 30 7

0 80 6 1 10 1

0 00 9

0 20 90 6

0 01 00 5 0 40 1

-0 20 3 0 5

0 90 0

0 00 8 0 6

0 3-0 2

0 00 30 5 0 3

0 80 0 0 00 50 30 0

-0 10 5-0 10 00 3-0 60 00 2

0 5 0 6

1 2

1 1

1 2

1 1 1 2

1 0

0 7

0 6

0 3 -0 1

0 0 0 3

0 6

0 7

0 9

1 0

0 9

1 0

0 8

0 6

0 7

0 6

0 0

0 6

0 7

0 5

0 6

0 7

0 70 7

0 7

0 4

0 6

0 5

0 4

0 0

0 2 0 4

0 5

0 4

0 5

0 6

0 6 0 1

0 1

0 6

0 5

0 4

0 30 0

0 10 3

0 2

0 3

0 4

0 5 0 3 0 2 0 3

0 3 0 40 2

0 5

0 8

1 0

1 1

1 2

1 1

1 2

1 40 1

0 21 2

0 0 1 2

1 2

1 1

1 0

1 1 1 10 8-0 2

-0 20 9 1 0

1 41 2 0 3

0 8 0 2

0 2

1 0

1 21 00 0

0 01 1

1 0 0 7 0 1

0 2 1 1

1 2

1 1-0 1

-0 11 1

0 0 0 7

0 00 6 0 8

0 00 70 8

-0 10 60 7

0 1 0 6

0 6

CN109

F O

O T

U G

D P

G F

O O

O U

G H

N D

.d w g

NOTES:

2. SURVEYING AND MAPPING BY US ARMY CORPS OF ENGINEERS.

3. ALL ELEVATIONS ARE BASED ON NAVD 88

4. ALL COORDINATES ARE BASED ON NCGRID (NAD 83).

5. FIELD SURVEY PERFORMED 05 APRIL 2022.

6. A MINIMUM OF FIFTEEN (15) DAYS PRIOR TO THE PLACEMENT OF PIPE ON THE ISLAND, THE CONTRACTOR SHALL MEET ONSITE WITH THE CONTRACTING OFFICER'S REPRESENTATIVE AND A REPRESENTATIVE FROM THE NORTH

CAROLINA WILDLIFE RESOURCES COMMISSION TO DETERMINE THE PIPELINE ROUTE AND INITIAL DISCHARGE POINT. THE CONTRACTOR SHALL AVOID IMPACTS TO SUBMERGED AQUATIC VEGETATION (SAV) TO THE MAXIMUM EXTENT POSSIBLE. THE EFFLUENT PIPE DISCHARGE POINT SHALL NOT BE DIRECTED TOWARDS AN AREA OF SAV. THE CONTRACTOR SHALL PLACE MATERIAL IN A MANNER THAT MINIMIZES EXPANDING THE ISLAND FOOTPRINT TO THE GREATEST EXTENT POSSIBLE. THE CONTRACTOR SHALL EVENLY GRADE PLACED MATERIAL TO A MAXIMUM ELEVATION OF 15-FEET WITH A NATURAL SLOPE. SEE PARAGRAPH "PLACEMENT OF DREDGE MATERIAL" IN SPECIFICATION

SECTION 35 20 23 FOR ADDITIONAL PLACEMENT AREA REQUIREMENTS.

7. FOR LOCATION MAP SEE SHEET GI01. FOR DETAILS OF AREAS TO BE DREDGED SEE SHEET CN108.

Feet 0 200 400

APPROXIMATE LIMIT OF SAV

C O

N O

C R

O N

D B

N N

C H

D B

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

C E

D R

A N

D /M

C H

O R

U .S

.A R

M Y

C O

O F

R S

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N U

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D R

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RTA Plans

G001 COVER SHEET

GI01 LOCATION MAP, PROJECT OVERVIEW AND INDEX OF DRAWINGS

CN101 RANGE 14A AND 14B (CONTRACT OPTION)

CN102 RANGE 16

CN103 RANGE 17

CN104 RANGE 17 EXTENSION

CN105 ISLAND H

CN106 ISLAND D

CN107 ISLAND L AND ISLAND MN

CN108 BIG FOOT SLOUGH CHANNEL

CN109 BIG FOOT SLOUGH ISLAND PLACEMENT AREA

Sheet 1

File details come from the government source that posted it. Updated Jul 18, 2022.