Oregon Inlet Event 5, Q3 6/22/2023 Work Plan

EVENT 5 - Q3 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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aw
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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 5.
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 -14' MLLW CONTOUR.
rn
w
0
O
0
N 758000
DISPOSAL
N 753000 ISLAND "L"
OLD HOUSE CHANNEL -
RANGE 1
DISPOSAL
ISLAND "MN"
IN 748000
i
L
L
rn
w
0
O
O
NOT FOR CONSTRUCTION O N 743000
FOR REGULATORY REVIEW ONLY
DISPOSAL
ISLAND "C"
MARC BASNIGHT BRIDGE
PERMITTED CHANNEL
CORRIDOR
VI-VVIV 1I YLL1 IV
HELLS GATE CHANNEL
(WEST)
PAMLICO
SOUND
rn
rn rn
W W
O O
W �
O O
O O
O O
VI\LVVIV 1I YLLI IV
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
rn
LA)
O
W
O
O
0
ATLANTIC
OCEAN
OREGON INLET AND
OCEAN BAR CHANNEL
HERBERT C.
DGE TO REMAIN
0 1250 2500
rn
GRAPHIC SCALE IN FT w
O
N 743000 o
O
0
Ln
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1i
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SHEET
2
OF 8

� 3p3ppp0
s
0
0
0
OREGON
INLET
91
PORTION OF HERBERT C.
BONNER BRIDGE TO REMAIN
'} ELIZABETH CHRISTINE \ `o
\
PEA ISLAND
PROPOSED
INSHORE
DISPOSAL AREA
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
DRILL RIG
NOTE: Ln
0
ck
t9 °'
1. LOCATION OF THE PROPOSED DREDGE AREA OF THE CHANNEL ?
REPRESENTS CONDITIONS ON THE DATES OF MOST RECENT OC 0
SURVEYS (SEE NOTE 4). IF CONDITIONS DICTATE A CHANGE IN W
THE PROPOSED MAINTENANCE AREA DURING Q3-2023, 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 Zp W
O
SCOUR HOLES AROUND THE BONNER BRIDGE EXIST AND IN _ 0
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: c Lu
DCM. OC OC o 0 n
4. BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA I'L O 2 r W
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG THE Z o" "
JL6 Cfz�
OREGON INLET TO HELLS GATE CHANNEL WEST & ALTERNATE a O °m z z
ROUTE (FEBRUARY 9,2023), SURROUNDING OREGON INLET y a ° W
BRIDGE (DUNE 14, 2023), ALONG OCEAN BAR CHANNEL (DUNE a z z
13, 2023) AND SURVEY DATA COLLECTED BY EJE DREDGING O C0
V 0 Z
- ALONG INSHORE DISPOSAL AREA (FEBRUARY 19, 2023). W
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE o
y r z
e m �
Point ID Northing Easting Elevation PC CzLu
3p3pppp A 758984.40 3034325.60 -16.0
B 759327.80 3034120.50 -16.0
C 756939.90 3030123.30 -16.0 z
o a
D 755484.40 3029079.30 -16.0 L
E 755251.20 3029404.30 -16.0
NO DREDGE ZONE F 756639.20 3030399.80 -16.0 0
#..
W.G. TOWNSEND
BOSS LADY
ANGEL DAWN
�O
�Q OREGON INLET AND
QO OCEAN BAR CHANNEL
Ooo -
O�
� s
<GrQ' o � 3p35ppp
= o
I
Z
ID
/ T B
a w L z p
E
ATLANTIC V U) v Y rL U Vo
OCEAN M
N W
o
w N 10 z
/ and mLL y,0 ��
va -0a
0 0 0 -
J
/ W
z
PERMITTED CHANNEL U z
J J
/ CORRIDOR J W Q z z
z0 ^u ¢z
p35ppp ° W - w
/ E3 Lu�Uzz o z�>
¢z
m
M
Wr o g
/ rLu
N z O= W
o'2:W 00
N� a
z
W
>
/ W
/ 0 500 1000
2 GRAPHIC SCALE IN FT SHEET
o� 3
OF 8

00
�Ss000 tioo MARC BA HT
�o NI S G
BRIDGE
X _
11 \
PERMITTED CHANNEL W
H� CORRIDOR
\ 1
OREGON INLET TO HELLS C1 \\
GATE CHANNEL (WEST) L
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
L
o 3 ppp�
�t V
\1
00 \
U 6o0
0
�
PAMLICO \
SOUND
\ T
\ r
�K
\ \\ F
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
NOTE:Ln
o
t9
�'
1.
ALTERNATE ROUTE PORTION OF OREGON
ck
INLET TO HELLS GATE CHANNEL DREDGE
o
AREA IS FIXED FOR EVENT 5.
W v
°i
2.
PLACEMENT OF DREDGE SPOIL MATERIAL
? Z
a
WILL BE PERMITTED IN THE PROPOSED
t9 -
INSHORE DISPOSAL AREA WHERE DEEP
Z a
Wu
N
SCOUR HOLES AROUND THE BONNER BRIDGE
u
EXIST AND IN THE NEARSHORE DISPOSAL
Z 0
*�
AREA OFFSHORE PEA ISLAND.
a
3.
NO SIDECAST DREDGING SHALL OCCUR
W
U
BETWEEN APRIL 1 AND DULY 31 WITHOUT
PRIOR COORDINATION WITH USACE AND NC
0
a u
DCM.
Ix
o 0 n
4.
BATHYMETRIC CONTOURS GENERATED FROM
d O
° N W
SURVEY DATA COLLECTED BY THE USACE
J
° z
p0
WILMINGTON DISTRICT ALONG THE OREGON
4% O
m o z
INLET TO HELLS GATE CHANNEL WEST &
H
a W
ALTERNATE ROUTE (FEBRUARY 9,2023),
a0
z Z z
SURROUNDING OREGON INLET BRIDGE
v
co
0 W
(DUNE 14, 2023), ALONG OCEAN BAR
CHANNEL (DUNE 13, 2023) AND SURVEY DATA
COLLECTED BY EJE DREDGING ALONG THE
INSHORE DISPOSAL AREA (FEBRUARY 19,
W
2023).
e m �
z
6, sti
S
L\
- R 00
0 a;
N ON
1
J
PORTION OF
HERBERT C. BONNER BRIDGE
TO REMAIN
0 450 900 00o PROPOSED INSHORE
GRAPHIC SCALE IN FT :L000
DISPOSAL AREA
�
10REGON
/ INLET
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CROSS SECTION A -A'
B-B' C-C'
I EXISTING GRADE I
iJUNE 13, 2023
I
f1 �\
/ I I
MAXIMUM AD EL.
= -16.0 ' MLLW I
r�
1
0
-5
-10
-15
-20
-25
1000 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 6-6' CROSS SECTION C-Cl
EXISTING GRADE
JUNE 13, 2023
1L
5
MAXIMUM AD EL.
_ -16.0 ' MLLW
V
400'
J1
5
5
5
0
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-10
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z
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-20
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-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
EXISTING GRADE
JUNE 13, 2023
1L J1
5 5
y
\ /
\\ / I-ol
MAXIMUM AD EL.
_ -16.0 ' MLLW
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
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NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
0
W
w
u-
-5
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O -10
Q
w
J -15
w
CROSS SECTION D-DI
E-E' F-F'
I I
I I
EXISTING GRADE
JUNE 141 2023
1 I
MAXIMUM AD EL.
= -10.0' M LLW
' I I
-500 0 1000 2000
CROSS SECTION E-El
10 0'
3000 4000 5000 6000
DISTANCE ALONG SECTION (FEET)
0 5 10 0 500 1000
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
EXISTING GRADE
JUNE 141 2023
1L
\5
5 1
MAXIMUM AD EL.
= -10.0' M LLW
-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
JUNE 141 2023
05J
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 M
M
W Z N
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SHEET
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OF 8

Ln
O
z rn
ds M
I _
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Lu
W V
CROSS SECTION G-G' c� M
za M
5 H-H' S LuZ
J
EXISTING GRADE O 10C .<
MAY 10, 2023 v a
w 0 I 0 Lu
W ~ .2 U
j O H
' d 0 0- Lu
J -5 I -5 z° z J
J
1 3 I J1 ~ O m°
3 y
Lu
O c� Luz z -10 -10 O
Q ~` 00
w -15 -15 = _
MAXIMUM AD EL.
_ -12.0 ' MLLW 17"lzaW
-500 0 1000 2000 3000 3500
DISTANCE ALONG SECTION (FEET)
z
0 5 10 0 500 1000 2
Lu
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT
v
0
0
CROSS SECTION H-H' Z
n o N
5 5 L Zo
E
wQ wY nY o�
EXISTING GRADE
FMAY 10, 2023 o
O
w N Z
w O 0 and m� y �
w W Q L L 10 o Q
LL
0 0 0
1L J1 -
-5 3 3 -5
Lu
Q
z
z
= a
o_ -10 -10 U Z 2
Lu W dS
J z
> zOu< Q
W ' zap
w -15 -15 °u-o ULz
MAXIMUM AD EL. °z o<ul
o
_ -12.0' MLLW 0Lu
M Q O 0 Ln
-500 -250 0 250 500 a� o ° o
DISTANCE FROM CENTERLINE (FEET) LuU
W
0 5 10 0 250 500
VERTICAL GRAPHIC SCALE IN FT HORIZONTAL GRAPHIC SCALE IN FT SHEET
NOT FOR CONSTRUCTION 8
FOR REGULATORY REVIEW ONLY OF 8