DCM Written Notice 9.22.2022

41
COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC
4038 MASONBORo Loop ROAD
C OAGTAL WILMINGTON, NC 28409
PROTECTION
ENGINEERING 910-399-1905
September 22, 2022
Heather Coats
Beach & Inlet Management Project Coordinator
North Carolina Division of Coastal Management
127 Cardinal Drive
Wilmington, NC 28405
Subject: Hatteras Inlet Channel Maintenance Project — Written Notice of Project
Initiation
Dear Ms. Coats:
The Division of Coastal Management (DCM) issued a CAMA Major Permit for the Hatteras Inlet
Channel Maintenance Project on December 22, 2016 (#129-16). This permit was subsequently
renewed on January 22, 2020 and has an expiration date of December 31, 2024. This letter serves
as written notice of project initiation as required in Condition 7 of the permit. Please find
attached to this letter revised permit drawings dated September 8, 2022, which provide the
location of the proposed channel for the upcoming event.
The project includes maintenance dredging within a portion of the Hatteras Inlet Connector
Channel, which runs between the inlet gorge and the ferry channel in proximity to Ocracoke
Island. This channel is locally referred to as the "Hatteras Connector Channel". The attached
plan view drawing shows the locations along the Hatteras Connector Channel in which
maintenance dredging is proposed for this event. Three (3) separate channel segments were
identified in which maintenance dredging is required, namely North, Middle, and South
Connector Channels. The attached plans also include the disposal area, avoidance areas
identified through cultural resource surveys, submarine cables, and previously mapped
submerged aquatic vegetation (SAV) resources in the vicinity.
Also included on the drawings is the "Expanded Dredge Corridor", which is an area the County
has requested be added to the existing Major CAMA Permit through the permit modification
process. That request was submitted in August and deemed complete by DCM on August 22.
The request is still under review.
In a letter dated September 15, 2022, Dare County also requested relief to allow for the USACE
sidecast dredge "Merritt" to perform maintenance dredging for up to (7) days between October

COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC.
c GA51AE --== -- Page 12
PROTECTION
ENGINEERING
7 and October 31, 2022. This maintenance dredging was proposed to occur within a portion of
the "Proposed Middle Connector Channel" and the "Proposed North Connector Channel", as
depicted on Sheets 2 and 3 in the attached drawings. However, the request specifically included
dredging of only a portion of the "Proposed Middle Connector Channel" limited to 1) the —700 ft
southern portion of this area that is situated within the permitted Connector Channel Corridor
and 2) the —500 ft segment that extends into the Expanded Dredge Corridor, that was previously
dredged during the April and May 2022 maintenance event (Figure 1). In addition, much of the
—700 ft "Proposed Northern Connector Channel" has also been dredged in the recent past under
NCDOT permits. Dare County is still waiting for a response to this request for relief.
At present, the proposed maintenance event would include a 7-day event that would be limited
to portions of the North and Middle Connector Channels as well as a 14 to 20-day event
anticipated to occur after November 1. This assumes that both the permit modification request
to expand the dredge corridor is approved by November 1 and that relief is granted for a 7-day
event to occur as described in the letter dated September 15, 2022. The 7-day event is proposed
to utilize the US Army Corps of Engineers (USACE) side cast Dredge Merritt. Material dredged
from the channel will be sidecasted to either side of the proposed channel. The longer
maintenance event, anticipated to be conducted after November 1, is planned to be conducted
using the Dredge Miss Katie. Material dredged from the channel by the Miss Katie will be placed
in the nearshore disposal location shown on the attached drawings.
As you are aware, the Major CAMA Permit (#129-16) allows for maintenance of a 200 ft. wide
channel to a depth of -12 ft. MLW. Based on the availability of funds, dredge availability, and
conditional surveys conducted August 12, 2022, the proposed channel dimensions for this
upcoming dredging event are to establish a 200-foot wide channel at elevation -8 ft MLW. Again,
the dredge event includes both the 7-day event in October and a 14 to 20 day event after
November 1. Based on the conditional survey from August 12, 2022, the establishment of the
proposed channel will require the dredging of approximately 23,000 cy of material. Please note
that these channel dimensions and configurations are what is anticipated, but Dare County
reserves the authorization to increase the depth up to the permitted -12 ft. MLW depth,
depending on production rates and dredge availability. The proposed channel is shown on the
attached drawings, including both plan view and cross -sectional view.

COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC
4038 MASONBORo Loop ROAD
WILMINGTON, NC 28409
910-399-1905
Figure 1. Map indicating the portion of the proposed middle connector channel (orange polygon) previously dredged during the April/May 2022 event.

- COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC
4038 MASONBORO LOOP ROAD
COASTAL WILMINGTON, NC 28409
PROTECTION
ENGINEERING 910-399-1905
As required by Condition #7D in CAMA Major Permit #129-16, DCM must be notified of the
location of any known SAV beds at least two (2) weeks in advance of dredging. On June 14-15,
2019, and June 1, 2020, the Albemarle Pamlico National Estuary Partnership (APNEP) acquired
high -resolution aerial imagery from within Pamlico Sound from the Hwy 64 bridge at Roanoke
Sound south to Ocracoke Inlet. These images were then used to digitally delineate the
boundaries of visible SAV beds. The resultant SAV maps were then made available to the public
in August 2022. The closest SAV bed, as delineated from the 2019/2020 assessment, are found
within 21107 ft from the dredging footprint within the Proposed Middle Connector Channel and
938 ft from the Proposed North Connector Channel.
Regarding contact information during dredge activities, Coley Cordeiro of the USACE will be the
point of contact for the USACE (Merritt) dredging operations. Coleys phone number is (910) 530-
0228 and her email is [e-mail]. Jordan Hennessy will be the EJE
Dredging point of contact for the Miss Katie dredging operations. Jordan's phone number is (252)
619-3606 and his email is [e-mail]. I will be the County's agent and can be
contacted via cell phone at [phone] or via email at [e-mail].
Please feel free to contact me anytime for further clarification or explanation of the project.
Sincerely
Ken Willson
Senior Program Manager
Coastal Protection Engineering of North Carolina, Inc.
Office: 910-399-1905
Mobile: [phone]
[e-mail]
CC: Barton Grover, Dare County
Jonathan Howell, NC DCM
Paul Wojoski, NC DWR
Brad Rosov, CPE

CHARLOTTE
s
N.T.S.
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
HATTERAS INLET MAINTENANCE PROJECT
DARE COUNTY, NORTH CAROLINA
SHEET INDEX
1 COVER SHEET
2 PROJECT OVERVIEW
3 CONNECTOR CHANNEL PLAN VIEW
4 NORTH CONNECTOR CHANNEL CROSS SECTIONS
5 MIDDLE CONNECTOR CHANNEL CROSS SECTIONS
6 SOUTH CONNECTOR CHANNEL CROSS SECTIONS
GENERAL NOTES:
1. COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
DATUM 1983, (NAD83)
2. ELEVATIONS ARE REFERENCED TO MLLW. PERMITTED DREDGE DEPTH IS RELATIVE TO THE MLW DATUM BEING
APPROXIMATELY 0.08' ABOVE MLLW PER NOAA PID EX0400.
3. DATE OF AERIAL PHOTOGRAPHY: CS-1, PV-1 AND PV-2 FEB. 2017 GOOGLE EARTH.
4. SURVEY DATA COLLECTED BY US ARMY CORPS OF ENGINEERS. AUGUST 17, 2022.
5. BATHYMETRIC CONTOURS REPRESENT THE CONDITIONS OF THE CHANNEL ON AUGUST 17, 2022 AND SHOULD NOT
BE RELIED ON FOR NAVIGATION PURPOSES.
LEGEND
0 7500 15000
GRAPHIC SCALE IN FT-------
0 HAT-03-V-18
RALEIGH� �p�SNP �' •
P CAPE HATTERAS
�p9�(Y\ PROJECT LOCATION
—JACKSONVILLE• MOREHEAD CITY
CAPE LOOKOUT
CAPE FEAR
ATLANTIC
OCEAN +0.52' MHW
+0.41' NAVD88
+0.08' MLW '
----------------T-
+0.00' MLLW r
TIDAL DATUM
. REFERENCE,
MEAN LOW WATER LINE
MEAN HIGH WATER LINE
CROSS SECTION LINE
HATTERAS INLET BORINGS 2003 AND ID
NEARSHORE DISPOSAL AREA
SUBMERGED AQUATIC VEGETATION AND 100 FT. BUFFER
ASBUILT EXISTING CABLE ROUTE (CALDWELL CABLE VENTURES)
EXISTING CABLE ROUTE (UTLITY ELECTRICAL CONSULTANTS, PC)
ASBUILT NEW CABLE ROUTE
TIDAL DATUM REFERENCE BASED ON NOAA TIDE
STATION ID 8654467 EPOCH 1983-2001"
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SHEET 1 OF 6

PAMLICO SOUND
PROPOSED NORTH
L_ _ CONNECTOR CHANNEL
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
O �
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CONNECTOR
ANNEL CORRIDOR
PROPOSED MIDDLE
C` /CONNECTOR CHANNEL
ti07-03-V-90 0
EXPANDED DREDGE CORRIDOR p
CHARTED WRECK
AVOIDANCE AREA HAT-03-V-10
W:f-03-V-16 V V
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HAT-03-V-17
0 HAT-
03-V-15 AT-03-V-14
PF
0
0 -V-18
HAT-03-V-19
ISLAND
LIFE SAVING STATION
AVOIDANCE AREA
BREAKING SHOAL
AVOIDANCE AREA
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0 HATTERAS
0 HAT-03-V-11
0 OHAT-03-V-12
HAT-03-V-13
ED SOUTH
TOR CHANNEL _
HATTERAS
INLET
ado
GRAPHIC SCALE IN FI
PV-1 I

BOTTOM OF CUT/CHANNEL
COORDINATE TABLE
POINT ID
EASTING
NORTHING
ELEVATION
a
2960399.24
544919.10
-9.0
b
2960322.76
544734.30
-9.0
c
2960700.54
544794.40
-9.0
d
2960624.06
544609.60
-9.0
e
2962703.11
543991.98
-9.0
f
2962633.69
543804.42
-9.0
9
2963166.85
543820.32
-9.0
h
2963064.15
543645.08
-9.0
i
2963682.44
543381.06
-9.0
j
2963528.55
543249.43
-9.0
k
296886.07
543048.96
-9.0
i
2963709.18
542954.84
-9.0
m
2964111.18
542555.40
-9.0
n
2963929.22
542472.40
-9.0
0
2964409.83
542293.59
-9.0
P
2964234.37
542197.61
-9.0
G
2964769.13
541636.69
1 -9.0
12964593.671
541540.71
1 -9.0
L
1
I
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
M
no
- I
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=PROPOSEDH ANNEL
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CONNECTOR CHANNEL
CORRIDOR i
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PROPOSED MIDDLE
CONNECTOR CHANNEL
ik
11
0` 425 850
GRAPHIC SCALE IN FT
PROPOSED SOUTH
CONNECTOR CHANNEL
G
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F�
NOTE:
1. ELEVATIONS ARE REFERENCED TO MLLW.
PERMITTED DREDGE DEPTH IS RELATIVE'
THE MLW DATUM BEING APPROXIMATELY
0.08' ABOVE MLLW PER NOAA PID EX040(
P �
SHEEP 3 OF fi

NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
4
0
-4
-8
-12
-16
-20
MHW EL. +0.52'
MLW EL. +0.08'
CROSS SECTION A -A'
AUGUST17, 2022
EXISTING GRADE
TARGET AD EL. =-9.0' MLLW
MAXIMUM AD EL=-11.92' MLLW
-1+00 0+00 1+00 2+00 3+00
DISTANCE ALONG SECTION (FEET)
NORTH CONNECTOR CHANNEL.
CROSS SECTION B-B'
A -A'
5
0
=----------
�.,
MLW EL. +0.08'
W
L5
------------------- -----------------------------------
J
J
-10
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CHANNEL
W
WIDTH 2O0y
-20
4
0
-4
-8
-12
-16
-20
4+00
MHW EL. +0.52'
MLW EL. +0.08'
AUGUST 17, 2022------------------- -5
EXISTING GRADE
----------------- --- _ ------ ---------- -10
TARGETA EL.--9.0'MLLW
3
--------------------------------------------------------------------- -15
MAXIMUM AD EL. =-11.92' MLLW
-750 -500 0 500 1000
DISTANCE ALONG SECTION (FEET)
1. ELEVATIONS ARE REFERENCED TO MLLW. PERMITTED DREDGE
DEPTH IS RELATIVE TO THE MLW DATUM BEING APPROXIMATELY
0.08' ABOVE MLLW PER NOAA PID EX0400
2. MAXIMUM AD EL. OF-11.92' MLLW SHOWN ON CROSS SECTIONS
IS EQUAL TO-12.00' MLW PER NOAA PID EX0400.
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HORIZONTAL GRAPHIC SCALE IN FT XS-1
VERTICAL GRAPHIC SCALE IN FT
SHEET 4 OF 6

C
CROSS SECTION C-Cl
D-D' E-E'
C'
AUGUST 17,2022
EXISTING GRADE
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11 I 11 11 11 I• 11 II : 11
CROSS SECTION D-D'
5 C-C'
MHW EL.+0.52'
0 _--- _ _ _u_..1
A MLW EL. +0.08' �..._..._.._..._..._..;
w AUGUS?
w
LL -5
3
J i
J !
-10---------- ............. .........
Z
O
F
111 CHANNEL
W WIDTH 2Oi
-20
DISTANCE ALONG SECTION (FEET)
MIDDLE CONNECTOR CHANNEL.
17, 2022
GRADE
L J 1 TARGET A
3 3
--------MAIMUAEL. =-1.' LLW -15
- - XMD 192M
CROSS SECTION E-E'
5 C-C'
MHW EL. +0.52'
0 .....
MLW EL. +0.08'
I j AUGUSI
LwL -5 ---------------
3
J
-10----------I----- ----
Z
O
j-15 ----------*--------
i CHANNEL
WIDTH 20
-20
17, 2022
'GRADE
10
1 L J 1 TARGET A EL. _ -9.0' MLLW
3 3
.. ..---_._._._._._._._.--- .._._._.._._._.._.._..._._._..-------
,MAXIMU___
M AD EL. _-11.92' ___MLLW-15
DISTANCE ALONG SECTION (FEET) DISTANCE ALONG SECTION (FEET)
1 ELEVATIONS ARE REFERENCED TO MLLW PERMITTED DREDGE
1
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0 250 500 ."....
DEPTH IS RELATIVE TO THE MLW DATUM BEING APPROXIMATELY 0 5 10 �--� �/
0.08' ABOVE MLLW PER NOAA PID EX0400 HORIZONTAL GRAPHIC SCALE IN FT XS-2
NOT FOR CONSTRUCTION 2. MAXIMUM AD EL. OF-11.92' MLLW SHOWN ON CROSS SECTIONS VERTICAL GRAPHIC SCALE IN FT
FOR REGULATORY REVIEW ONLY IS EQUAL TO-12.00' MLW PER NOAA PID EX0400. 'Neer 5 OF 6

NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
4F
0
—4
—8
—12
—16
—20
0+00 1+00 2+00
CROSS SECTION F-F'
AD EL. =
.5+UU 4+UU S+UU
DISTANCE ALONG SECTION (FEET)
SOUTH CONNECTOR CHANNEL.
CROSS SECTION G-G'
5 F-F'
MHW EL. +0.52'
0=----------
�., MLW EL. +0.08'
W
L 5-------------------_._._._._._._._._. -----
.'.-----
; _._._. AUGUST 17, 2022 _._._._._._._._._.. -5
EXISTING GRADE
J
J
-10 ------------------ 10
Z L Jl TARGET A) EL. = -9.0'MLLW
O 3 3
j -15 --------------------------------------------------------- - ----- - - -- - - -- - - - -- 2MLL
--- - -- - -15
UJ MAXIMUM AD EL. 11. _-9' W
CHANNEL
W WIDTH 2O0y
" _m ELI
-750 -500 0 500 1000
DISTANCE ALONG SECTION (FEET)
1. ELEVATIONS ARE REFERENCED TO MLLW. PERMITTED DREDGE
DEPTH IS RELATIVE TO THE MLW DATUM BEING APPROXIMATELY
0.08' ABOVE MLLW PER NOAA PID EX0400
2. MAXIMUM AD EL. OF-11.92' MLLW SHOWN ON CROSS SECTIONS
IS EQUAL TO-12.00' MLW PER NOAA PID EX0400.
F' 4
1 0
—4
—8
—12
—16
—20
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