DRAFT 9/19/2023

EVENT 6 - Q4 2023 OREGON INLET
CHANNEL MAINTENANCE PROJECT
PROJECT AREA
BODIE
ISLAND
OREGON
INLET
ATLANTIC
PEA OCEAN
ISLAND
PAMLICO SOUND
0 12500 25000
GRAPHIC SCALE IN FT
PROJECT LOCATION
RALEIGH _
CAPE HATTERAS
CHARLOTTE �-��
NO
JACKSONVILLE• MOREHEAD CITY
CAPE LOOKOUT
N.T.S. CAPE FEAR
ATLANTIC
OCEAN
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
DARE COUNTY, NORTH CAROLINA
SHEET INDEX
1 COVER SHEET
2 PROJECT OVERVIEW
3 OREGON INLET & OCEAN BAR CHANNEL PLAN VIEW
4 OREGON INLET TO HELLS GATE ALTERNATE CHANNEL PLAN VIEW
5 OREGON INLET TO HELLS GATE WEST AND OLD HOUSE CHANNEL PLAN VIEW
6 OREGON INLET & OCEAN BAR CHANNEL CROSS SECTIONS A -A', B-B' & C-C'
7 OREGON INLET TO HELLS GATE ALTERNATE CHANNEL CROSS SECTIONS D-D', E-E' & F-F'
8 OLD HOUSE CHANNEL RANGE 1 CROSS SECTIONS G-G' AND H-H'
GENERAL NOTES:
1. COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
DATUM 1983, (NAD83).
2. ELEVATIONS ARE IN FEET AND ARE REFERENCED TO MLLW.
3. DATE OF AERIAL PHOTOGRAPHY: FEBRUARY 15, 2020.
i Gf__Gnin
DREDGE AREA
INSHORE DISPOSAL AREA
— — PERMITTED CHANNEL CORRIDOR
k SHIPWRECK LOCATION
Ln
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Z rn
19
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W
W V
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M
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7 d W
W
z
z
a a
= z
U J
JUOa'
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0 a w
a =
w U0
0 Q z w
M Z i
0 z 0
�z� U
O
w
a
z
w
w
SHEET
1
OF 8

NOTE:
1. PLACEMENT OF DREDGE SPOIL MATERIAL ON DISPOSAL
ISLANDS MN, L, AND C IS NOT INCLUDED IN THE
PROPOSED ACTION.
2. PROPOSED OREGON INLET AND OCEAN BAR CHANNEL
DREDGE AREAS ARE NOT FIXED AND RATHER FOLLOW DEEP
WATER AT TIME OF MAINTENANCE. LOCATION SHOWN IS
REPRESENTATIVE ONLY AND WILL CHANGE BASED ON
BATHYMETRY AT TIME OF MAINTENANCE.
3. ALTERNATE ROUTE PORTION OF OREGON INLET TO HELLS
GATE CHANNEL DREDGE AREA SHOWN ON SHEETS 3 AND 4
IS FIXED FOR EVENT 6.
4. PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE
PERMITTED WITHIN PROPOSED INSHORE DISPOSAL AREAS N 763000
SHOWN ON SHEETS 3 AND 4 AND IN THE NEARSHORE
DISPOSAL AREA OFFSHORE PEA ISLAND IN PROXIMITY TO
THE -17' MLLW CONTOUR.
rn
w
0
O
0
N 758000
DISPOSAL
N 753000 ISLAND "L"
OLD HOUSE CHANNEL -
RANGE 1
DISPOSAL
ISLAND "MN"
IN 748000
rn
w
0
O
O
NOT FOR CONSTRUCTION O N 743000
FOR REGULATORY REVIEW ONLY
DISPOSAL
ISLAND "C"
MARC BASNIGHT BRIDGE
PERMITTED CHANNEL
CORRIDOR
V I \L V V I Y 1 I Y LL 1 I V
HELLS GATE CHANNEL
(WEST)
PAMLICO
SOUND
VI\LVMY 1I YLLI IV
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
PROPOSED INSHORE
DISPOSAL AREA
rn
W
O
W
O
O
O
Z
ATLANTIC
)CEAN 0 1250 2500
GRAPHIC SCALE IN FT
V
/ you
'0 <
OREGON INLET AND
OCEAN BAR CHANNEL
�ERBERT C.
)GE TO REMAIN
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Z Z a
Z M
M
W Z N
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— OC a
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0 0 O OF 8

10
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
PAMLICO
SOUND
y0 lm
In
z
-45
,53
� 3p3ppp0
s
0
0
0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
/ MARC BASNIGHT /
BRIDGE
I
/
I /
OREGON
INLET
91
DRILL RIG
NOTE:
Ln
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t9 °'
1. LOCATION OF THE PROPOSED DREDGE AREA OF THE CHANNEL
ck
?
REPRESENTS CONDITIONS ON THE DATES OF MOST RECENT
OC o
SURVEYS (SEE NOTE 4). IF CONDITIONS DICTATE A CHANGE IN
W
THE PROPOSED MAINTENANCE AREA DURING Q4-2023,
Z Z
Z a
CHANGES WILL BE COORDINATED WITH USACE NAVIGATION
O -
BRANCH AND REGULATORY AGENCIES.
Z a N
2. PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE PERMITTED
W ? u
IN THE PROPOSED INSHORE DISPOSAL AREA WHERE DEEP
Z0 W
0
SCOUR HOLES AROUND THE BONNER BRIDGE EXIST AND IN
O
_
THE NEARSHORE DISPOSAL AREA OFFSHORE PEA ISLAND.
v
3. NO SIDECAST DREDGING SHALL OCCUR BETWEEN APRIL 1 AND
W
DULY 31 WITHOUT PRIOR COORDINATION WITH USACE AND NC
0 3:DCM.
OC OC o 0 n
4. BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA
d O 2 r W
Z
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG THE
D U "
J � � Z J
OREGON INLET TO HELLS GATE CHANNEL WEST & ALTERNATE
a O °m z z
ROUTE (AUGUST 1, 2023), SURROUNDING OREGON INLET
y a ° W
BRIDGE (AUGUST 14, 2023), ALONG OCEAN BAR CHANNEL
a z z z
(AUGUST 8, 2023) AND ALONG INSHORE DISPOSAL AREA (JULY
V o z
-
21, 2023). INSHORE DISPOSAL AREA SUPPLEMENTAL SUVEY
W
DATA COLLECTED BY MCKIM AND CREED (SEPTEMBER 9, 2023).
y r z
s o m
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
Point ID
Northing
Easting
Elevation
.. ,:.,.
e ee z
.. c d W
3p30ppp
A
758984.40
3034325.60
-16.0
B
759327.80
3034120.50
-16.0
C
756939.90
3030123.30
-16.0
o
a
D
755484.40
3029079.30
-16.0
Lu
o
E
755251.20
3029404.30
-16.0
NO DREDGE ZONE
W.G. TOWNSEND
°o
— PORTION OF HERBERT C. i
BONNER BRIDGE TO REMAIN'
ELIZABETH CHRISTINE
PEA ISLAND o
PROPOSED Q� OREGON INLET AND �
INSHORE O� OCEAN BAR CHANNEL \
DISPOSAL AREA
O �
� s
=<Gr� o � 3p35ppp \
BOSS MANGEL DAWN
W
F 756639.20 3030399.80 -16.0
ID
/ T b
v bw Zo
ATLANTIC w �Y
E
V rL Ul V
OCEAN M
N W
o m O
rn Z
��
vQ rn 0<
J
W
/ Z
PERMITTED CHANNEL U z
J J
/ CORRIDOR J W Q z z
z0^U Q Z
p35300 (OD W � L w
/ E3 Lu 0UO z�>
°W
z mz
o g
M
/ 0Zz N Z Lu
0 w w
U OU
w O
/ N � o
z
W
>
/ W
/ 0 500 1000
2 GRAPHIC SCALE IN FT SHEET
o� 3
OF 8

t
0 450 900
GRAPHIC SCALE IN FT
OREGON INLET TO HELLS
GATE CHANNEL (WEST)
o
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
Point ID
Northing
Easting
Elevation
G
754588.78
3020086.07
-10.0
H
754080.12
3020977.19
-10.0
1
752790.13
3022559.39
-10.0
J
752490.86
3023239.57
-10.0
K
752212.77
3024055.38
-10.0
L
751335.76
3025431.72
-10.0
M
751549.12
3026678.42
-10.0
N
751861.54
3027165.69
-10.0
O
752476.00
3027723.48
-10.0
P
752543.21
3027649.44
-10.0
Q
751938.57
3027100.55
-10.0
R
751644.26
3026641.53
-10.0
S
751440.83
3025452.90
-10.0
T
752303.55
3024099.00
-10.0
U
752584.12
3023275.90
-10.0
V
752876.20
3022612.08
-10.0
W
754162.86
3021033.96
-10.0
X
754675.63
3020135.64
-10.0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
iD
X
6000 p�nj
PERMITTED CHANNEL
CORRIDOR
�V
\I
o \
U oo
�o �o
NOO
\ 41 T
O PAMLICO
SOUND
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
MARC BASNIGHT
BRIDGE
NOTE:Ln
o
1.
ALTERNATE ROUTE PORTION OF OREGON
z
m
°;
INLET TO HELLS GATE CHANNEL DREDGE
o
AREA IS FIXED FOR EVENT 6.
W v
°i
2.
PLACEMENT OF DREDGE SPOIL MATERIAL
Z Z
a
WILL BE PERMITTED IN THE PROPOSED
t9 -
INSHORE DISPOSAL AREA WHERE DEEP
Z a
W ?
N
SCOUR HOLES AROUND THE BONNER BRIDGE
u
EXIST AND IN THE NEARSHORE DISPOSAL
ZOLu
�
AREA OFFSHORE PEA ISLAND.
a
a
3.
NO SIDECAST DREDGING SHALL OCCUR
2
U
�4
BETWEEN APRIL 1 AND DULY 31 WITHOUT
W
PRIOR COORDINATION WITH USACE AND NC
~O
Ixo
� m u
60' \
4.
DCM.
BATHYMETRIC CONTOURS GENERATED FROM
OC
d Z
0 u
J N uj
O
SURVEY DATA COLLECTED BY THE USACE
J L6
° z
WILMINGTON DISTRICT ALONG THE OREGON
40
m o z
INLET TO HELLS GATE CHANNEL WEST &
H
a W
ALTERNATE ROUTE (AUGUST 1, 2023),
a0
z z
SURROUNDING OREGON INLET BRIDGE
co
0 J Z
(AUGUST 14, 2023), ALONG OCEAN BAR
W
- -
CHANNEL (AUGUST 8, 2023) AND ALONG THE
INSHORE DISPOSAL AREA (DULY 21, 2023).
INSHORE DISPOSAL AREA SUPPLEMENTAL
W
SURVEY DATA COLLECTED McKIM AND CREED
e
(SEPTEMBER 9, 2023).
"CZ"Z
am
/ OREGON
INLET
o.
F,
6,
O
AL
M N,
PORTION OF
>g) HERBERT C. BONNER BRIDGE
000 TO REMAIN
PROPOSED INSHORE
�ppo �000 DISPOSAL AREA ppp
�p`L 0 �pti !LOOO
OO
-s i ►► N
0
z
7
o w v z O
L
wQ wY nY o10
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N p
N W
rj o O
Z
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va o<
W
z
z
a a
=
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J
zWOQ
Oz
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00
Oaf
wU0
J=w_
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oQZ
Lu
z � z
N Lzu z
(OD
wcn
ago
W
Ow
=
o
Lu
4
SHEET
4
OF 8

NOTE:
p
IP
s
1.
NO DREDGING ANTICIPATED TO BE CONDUCTED IN Q4-2023
Ile
,,�Op� �0�
DISPOSAL
ALONG THE OREGON INLET TO HELLS GATE CHANNEL (WEST)
ISLAND "L"
SOp
SHOWN ON THIS SHEET.
�3 i
2.
NO SIDECAST DREDGING ACTIVITES SHALL OCCUR FROM
APRIL 1 TO DULY 31 WITHOUT THE NOTIFICATION AND
Y .*
APPROVAL OF THE NC DCM AND THE USACE WILMINGTON
ik
�q
DISTRICT REGULATORY DIVISION.
Ail
3.
OLD HOUSE CHANNEL RANGE 1 DREDGE AREA IS FIXED FOR
400mF
4 xx
EVENT 6.
it
�rt ti i.
4.
PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE PERMITTED
IN THE PROPOSED INSHORE DISPOSAL AREA WHERE DEEP
='
SCOUR HOLES AROUND THE BONNER BRIDGE EXIST AND IN
_
THE NEARSHORE DISPOSAL AREA OFFSHORE PEA ISLAND.
Y•.--��—"'�-v-
5.
BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG
=^
THE OREGON INLET TO HELLS GATE CHANNEL WEST &
Z
'
ALTERNATE ROUTE (AUGUST 1, 2023) AND OLD HOUSE
CHANNEL (AUGUST 1, 2023).
/\
Nv`�010
DISPOSAL
ISLAND "MN"
f
�
OLD HOUSE
CHANNEL
<)p0 PAMLICO
�, Z2�oo�
RANGE 1
p�
SOUND-
�
� Z1
PERMITTED CHANNEL
CORRIDOR
Op
'Lp
Off'
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
Point ID Northing Easting Elevation
Y 752705.36 3012655.48 -12.0
Z 752653.02 3012743.06 -12.0
Z1 750037.72 3011845.16 -12.0
Z2 750081.22 3011754.32 -12.0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
0 300 600
GRAPHIC SCALE IN FT
F'Rkj
OREGON INLET TO
HELLS GATE CHANNEL
(WEST)
Ln
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t9
Z 0)
M_
O
W
W V
Z Z a
t9 —
Z M
M
W Z
J
p 0 W
U
W
0H 0 u
d 0 Ix 0 0 -, Lu
z
Z 0UU
J� �Z�
o z c�
�O �0z
H Q(DW
0 00
W
o_
L7 d W
00
O
J
nj
Luz
Z
Z J
l
V
Z
Q Q
Q Lu
= Z
u z
U ZQ
Lu U 0�Lu
~ U
0^ zU
Za'2
(> W>
�U-)>
a
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Lu
Lu
afZZ
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= z
0
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SHEET
5
OF 8

,1
t
w
w -10
J
J
-15
Z
O
j -20
w
J
w
",
1000
CROSS SECTION 6-6'
EXISTING GRADE
AUGUST 8, 2023
1L J1
5 5
MAXIMUM AD EL. J
_ -16.0 ' MLLW
Now
400'
CROSS SECTION A -A'
B-B' C-C'
EXISTING GRADE
AUGUST 8, 2023
I
IMAXIMUM AD EL.
-16.0 ' MLLW
ti
J1
0
-5
-10
-15
-20
-25
2000 3000 4000 5000 6000 7000 7500
DISTANCE ALONG SECTION (FEET)
0 5 10 0 500 1000
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
CROSS SECTION C-Cl
5
0
-5
-10
-15
-20
-1000 -500 0 500 1000
DISTANCE FROM CENTERLINE (FEET)
0 5 10 0 250 500
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
q
EXISTING GRADE
AUGUST 8, 2023
1L
5
J1
5
MAXIMUM AD EL.
_ -16.0 ' MLLW 4
0'
5
0
-5
-10
-15
-20
-1000 -500 0 500 1000
DISTANCE FROM CENTERLINE (FEET)
0 5 10 0 250 500
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
J
W
z
Q U
Q U
U z 0Z$
ijU� 0 W Co
z0^Lu U Q Z
Lu
OWa' ~1u
� UUz �(n
oO Q O w Z co
Lu
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W
a<W o0cn
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SHEET
6
OF 8

w
w
LL
I
J
J
z
O
F-
Q
Lu
J
W
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
0
W
w
u-
J -5
J
z
0 -10
w
J -15
w
CROSS SECTION D-DI
E-E' F-F'
I I
I I
EXISTING GRADE
AUGUST 14, 2023
1
MAXIMUM AD EL. '
= -10.0' M LLW I \
-500 0 1000 2000 3000 4000 5000 6000
DISTANCE ALONG SECTION (FEET)
0 5 10 0 500 1000
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
CROSS SECTION E-El
10 0'
EXISTING GRADE
AUGUST 14, 2023
1L J1
5 5
MAXIMUM AD EL.
= -10.0' M LLW
5
0
-5
-10
-15
-500 -250 0 250 500
DISTANCE FROM CENTERLINE (FEET)
0 5 10 0 125 250
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
5
w 0
w
I
� -5
J
z
O -10
F-
Q
-i -15
W
7000 8000
CROSS SECTION F-F'
1 5
110),
MAXIMUM AD EL.
_ -10.0' M LLW
5
0
-5
-10
-15
9000 9500
— EXISTING GRADE
AUGUST 14, 2023
J1
5
0
5
0
-5
-10
-15
-500 -250 0 250 500
DISTANCE FROM CENTERLINE (FEET)
0 5 10 0 125 250
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
Ln
O
Z rn
1i O
W
W V
Z Z a
Z M
M
LY Z N
U
p W
— OCOa
U
W
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W
SHEET
7
OF 8

5
0
W
W
-5
J
z
O -10
Q
W
J -15
w
CROSS SECTION G-G'
H-H'
I EXISTING GRADE
AUGUST 1, 2023
I
i
I
I
1L J1
3 I 3
A/ I N
I r
I MAXIMUM AD EL.
_ -12.0 ' MLLW
5
0
-5
-10
-15
-500 0 1000 2000 3000 3500
DISTANCE ALONG SECTION (FEET)
0 5 10 0 500 1000
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
CROSS SECTION H-H'
1L�
3
1
EXISTING GRADE
AUGUST 1, 2023
MAXIMUM AD EL.
= -12.0 ' MLLW
5
0
-5
-10
-15
-500 -250 0 250 500
DISTANCE FROM CENTERLINE (FEET)
0 5 10 0 250 500
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
Ln
O
Z rn
19
O
W
W V
Z Z a
c� —
Z M
M
W Z N
U
0 O W
— OC a
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d 0 00 -' z Lu
Z oUU
JU. afz�
O z C7
HO QPW
a0 00
W
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J d W
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Z
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= =
U z =
JUG L J
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zOv z C7
z0=
wU0 w () Z
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M Z C
0 NO Z 2 W
NZ_0 0 (n
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Q O
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W
SHEET
8
OF 8