Oregon Inlet Event 4, Q2 4/12/2023 Rev

EVENT 4 - Q2 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
"Irl` PPROJECT LOCATION
RALE� -- IGH _
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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19
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a =
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0
aw
a
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w
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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 4.
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
ISLAND "C"
DISPOSAL
N 753000 ISLAND "L"
OLD HOUSE CHANNEL -
RANGE 1
DISPOSAL
ISLAND "MN"
IN 748000
MARC BASNIGHT BRIDGE
PERMITTED CHANNEL
CORRIDOR
VI-VVIY 11 YLL1 IV
HELLS GATE CHANNEL
(WEST)
PAMLICO
SOUND
L
rn
w
0
O
O
NOT FOR CONSTRUCTION 1
O N 743000
FOR REGULATORY REVIEW ONLY
rn
B VVI
ISLAN[
VI\LVVIY 11YLL1 IV
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
rn
W
O
W
O
O
O
ATLANTIC
OCEAN
OREGON INLET AND
OCEAN BAR CHANNEL
N /
1NLL/ /
/
a_ PORTION OF HERBERT C.
/ BONNER BRIDGE TO REMAIN
rn
w
O
W
O
O
0
0 1250 2500
rn
GRAPHIC SCALE IN FT w
O
N 743000 0
O
00
b zo
L
wQ wY nE ID
Y olo
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M p
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w N �° Z
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0 0 0
J
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a a
= z
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W
SHEET
2
OF 8

E
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
E 31325�00
PAMLICO
SOUND
s
\ 10
-15
\ 20
25
( 25 b
OREGON
INLET
DRILL RIG
OEM
NOTE:
Ln
O
t9
°'
1. LOCATION OF THE PROPOSED DREDGE AREA OF THE CHANNEL
Z
ck
REPRESENTS CONDITIONS ON THE DATES OF MOST RECENT
OC
o
SURVEYS (OCTOBER 21, 2022, FEBRUARY 3, 9, & 19, 2023 AND
W
°i
APRIL 6, 2023). IF CONDITIONS DICTATE A CHANGE IN THE
Z Z
a
PROPOSED MAINTENANCE AREA DURING Q2-2023, CHANGES
0 -
WILL BE COORDINATED WITH USACE NAVIGATION BRANCH
Z a
N
AND REGULATORY AGENCIES.
W ?
u
2. PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE PERMITTED
ZO 0
W
IN THE PROPOSED INSHORE DISPOSAL AREA WHERE DEEP
_ 19
SCOUR HOLES AROUND THE BONNER BRIDGE EXIST AND IN
v v
THE NEARSHORE DISPOSAL AREA OFFSHORE PEA ISLAND.
W
3. NO SIDECAST DREDGING ACTIVITIES SHALL OCCUR FROM
0
ci
m Lu
APRIL 1 TO DULY 31 WITHOUT THE NOTIFICATION AND
OC OC
o 0 �
APPROVAL OF THE NC DCM AND THE USACE WILMINGTON
d Z
z
o U LU
DISTRICT REGULATORY DIVISION.
J U.
O Z �
4. BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA
go
m Z z
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG THE
y
z W
OREGON INLET TO HELLS GATE CHANNEL WEST & ALTERNATE
a
z z z
ROUTE (FEBRUARY 9,2023), SURROUNDING OREGON INLET
V
co
M z
BRIDGE (FEBRUARY 3, 2023), ALONG OCEAN BAR CHANNEL
W
(APRIL 6, 2023) AND SURVEY DATA COLLECTED BY EJE
DREDGING ALONG INSHORE DISPOSAL AREA (FEBRUARY 19,
o =
2023).
-
W
y r z
s m
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
o
ee z
�aW
303033 Point ID
ea
20 ~10= �_, _c, �o� 1s z �sNO DREDGE ZONE
F o
0 20 W.G. TOWNSEND
^ems\ BOSS LADY
ANGEL DAWN
I ,
V _ �
PORTION OF HERBERT C. o
BONNER BRIDGE TO REMAIN
2 _ ELIZABETH CHRISTINE
s
0
0
0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
PEA ISLAND
PROPOSED
INSHORE
DISPOSAL AREA
B A'
OREGON INLET AND \ `
OCEAN BAR CHANNEL \ A
0
2 \
s
o E 3035�00 \
IQ
Northing I Easting I Elevation
759196.59 1 3034425.03
759535.23 1 3034212.14
756940.25 1 3030121.08
D 755489.07 I 3029079.69
E 755255.85 3029404.67
F I 756644.02 3030400.84
ATLANTIC
OCEAN
/ PERMITTED CHANNEL
/ CORRIDOR
-16.0
-16.0
-16.0
-16.0
-16.0
-16.0
W
z
z
¢ ¢
=
z
U J
Lu J U 0
U
0 W
z 0
W
¢ Z
� w
0350013
E3
11u
�U�
z
M
W
¢z
m
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/ 0 500 1000
GRAPHIC SCALE IN FT SHEET
3
OF 8

OJ
,SS000OWN
�•- �O J
ri
H
L
-10 s t
NOTE:Ln
o
MARC BASNIGHT
\ BRIDGE 1
\ 2
-15
\ 3
PERMITTED CHANNEL
CORRIDOR 4
5 �
OREGON INLET TO HELLS
GATE CHANNEL (WEST) E \
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
0
OREGON INLET TO
3113o HELLS GATE CHANNEL
V (ALTERNATE ROUTE)
\I
o \
o s
U o0o a
PAMLICO \
SOUND
\ T
K \ � oo°
F
\ 6 pp0
F' \ \
S ODO
ALTERNATE ROUTE PORTION OF OREGON
z
INLET TO HELLS GATE CHANNEL DREDGE
19
AREA IS FIXED FOR EVENT 4.
W v
°i
PLACEMENT OF DREDGE SPOIL MATERIAL
Z Z
a
WILL BE PERMITTED IN THE PROPOSED
t9 -
INSHORE DISPOSAL AREA WHERE DEEP
W Z
N
SCOUR HOLES AROUND THE BONNER BRIDGE
-
u
EXIST AND IN THE NEARSHORE DISPOSAL
0
ZLu
*�
AREA OFFSHORE PEA ISLAND.
a
NO SIDECAST DREDGING ACTIVITIES SHALL
2
W y
U
OCCUR FROM APRIL 1 TO DULY 31 WITHOUT
THE NOTIFICATION AND APPROVAL OF THE
0 �
1%
0 u
no
NC DCM AND THE USACE WILMINGTON
Ix
0 ULU)
DISTRICT REGULATORY DIVISION.
d O
° co W
BATHYMETRIC CONTOURS GENERATED FROM
J �
° z
SURVEY DATA COLLECTED BY THE USACE
40
m o z
WILMINGTON DISTRICT ALONG THE OREGON
y
a I-- W
INLET TO HELLS GATE CHANNEL WEST &
a0
z Z z
ALTERNATE ROUTE (FEBRUARY 9,2023),
V
o z
SURROUNDING OREGON INLET BRIDGE,
W
ALONG (FEBRUARY 3, 2023), ALONG OCEAN
BAR CHANNEL (APRIL 6, 2023) AND SURVEY
DATA COLLECTED BY EJE DREDGING ALONG
W
THE INSHORE DISPOSAL AREA (FEBRUARY
e
19, 2023).
aCZ`u
L� \ �---� O p �-
5 O ��
Q ,- O
\ M N C\
PORTION OF
HERBERT C. BONNER BRIDGE
TO REMAIN
0 450 900 00o PROPOSED INSHORE
GRAPHIC SCALE IN FT L000
DISPOSAL AREA
10REGON
/ INLET
ID
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L
sQ wY nY o�
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N ..�
0
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\\� SHEET
OF 8

NOTE:
Apo
1.
NO DREDGING ANTICIPATED TO BE CONDUCTED IN Q2-2023
ALONG THE OREGON INLET TO HELLS GATE CHANNEL (WEST)
SHOWN ON THIS SHEET.
2.
NO SIDECAST DREDGING ACTIVITES SHALL OCCUR FROM
APRIL 1 TO DULY 31 WITHOUT THE NOTIFICATION AND
APPROVAL OF THE NC DCM AND THE USACE WILMINGTON
DISTRICT REGULATORY DIVISION.
3.
OLD HOUSE CHANNEL RANGE 1 DREDGE AREA IS FIXED FOR
4100-4
EVENT 4.
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.
5.
BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG
THE OREGON INLET TO HELLS GATE CHANNEL WEST &
DISPOSAL
ISLAND "L"
ALTERNATE ROUTE (FEBRUARY 9,2023) AND OLD HOUSE
CHANNEL (FEBRUARY 15, 2023).
A�
S�
DISPOSAL
ISLAND "MN"
° PAMLICO
SOUND
PERMITTED CHANNEL
CORRIDOR
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
/ / O
ti
/
/ o/ OLD HOUSE CHANNEL
nZ2 o RANGE 1
co
z1
G
OREGON INLET TO
HELLS GATE CHANNEL
(WEST)
%,
b
0 300 600
GRAPHIC SCALE IN FT �,�p'y cQsOO w o
Ln
O
Z 0)
M
re W o
W V
? Z
Z a M
M
W N
U
Z
J
O a
�i W
ODEW
OC °O r L
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\00
0 �zz m �
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\7o_
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J
W
W Z
z Z J
z Q Lu
Q Q = Z
= z Z
U U J Q
J W Q Q U
z0U C7 W
zaf= cnU-) 3:
Lu
O a J W
WUO w°>
09fzz = z
Ozr oog
N Lu
0 O a
Fj � o
N Q U J Z
O W Z Q
Ow
W w
W o
SHEET
5
OF 8

,1
t
w
w -10
J
J
-15
z
O
j -20
w
J
w
"pi
1000
CROSS SECTION 6-6'
CROSS SECTION A -A'
B-B' C-C'
I EXISTING GRADE I
iAPRIL 6, 2023 i
MAXIMUM AD EL.
/ I
= -16.0 ' MLLW
1
Ln
O
Z rn
19
O
W
W V
Z Z_ a
0 z M
M
W N
U
Z JLu
0 �
Q
-5 � 1% �
W
0H E u
-10 d p OO � z
z ODU
LU
JL6 0z�
-15 O QOz
o
z
a0 zz
-20 v o� W
o_
P
-25 W
y r z
e m
a d W
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
MAXIMUM AD EL.
_ -16.0 ' MLLW
1L J1
5 5
/
EXISTING GRADE
APRIL 6, 2023 400'
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
MAXIMUM AD EL.
_ -16.0 ' MLLW
EXISTING GRADE
APRIL 6, 2023
J1
5
/
\ J /
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 U
Q = Q U
U Z 0Z$
Lu u 0 W CD
zLu
0^U Q Z
L uo JU
0Q
Lu U � (n
O Q Z m Z
o z o O w 0
N Q U 0 U W
a�W o0cn
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0
z °
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w
SHEET
6
OF 8

w
W
LL
J
J
z
O
F-
Q
W
J
W
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
E-E'
CROSS SECTION D-DI
F- F'
EXISTING GRADE
iFEBRUARY
9,2023 i
1
I
I
51
1 w— Ism
_
I
I
MAXIMUM AD EL.
= -10.0' M LLW
-560 0 1000 2000 3000 4000 5000 6000 7000
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
FEBRUARY 9,2023
1L J1
5v 15z
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
0
-5
-10
-15
8000 9000 9500
CROSS SECTION F-F'
EXISTING GRADE
FEBRUARY 9,2023
1L J1
5 5
110),
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
Ln
O
z rn
1i O
W
W V
Z a
t9 —
z M
M
W ?
0 J
0 w
19 Q
a
U
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0H .2 U
d-'o oz
z DUU
LU
—1 z _11
U. o
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o_
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7 d W
ID
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d �
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n O .. H
ri O
w N 10 Z
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0 0 0
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vz O dS
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SHEET
7
OF 8

5
0
W
W
W
-5
J
z
O -10
W
J -15
w
CROSS SECTION G-G'
H-H'
I EXISTING GRADE
FEBRUARY 15, 2023
I
i
I
I
1L J1
3 I 3
I �
i
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'
EXISTING GRADE
FEBRUARY 15, 2023
1L 11
3 3
N
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
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19
O
W
W V
Z Z a
c� —
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M
LY Z N
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d 0 0-0 Lu
00 00 z
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J� oz�
0 z (�
~O 00
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a0 00
M-�
v o� W
o_
17",
7 d W
a
L
sQ wY nY o�
V rL U V
M p
N W
n O .. H
o r w O
w N 0Z
(n
vQ mLL M oQ
000a
J
W
Z
Z
= a 2
U z J =
JUOa, L dS
Z
zOv z C7
z2
(DW0 ULuV)
Lu w()Z
0Qz cnz0
M z g
NO � Z 0o 2 W
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(y 2: w 0 u )
Q o
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W
SHEET
8
OF 8