Town of Duck CAMA 113-21 Modification Request Port Trinitie 2022-10-05.pdf

COASTAL
PROTECTION
ENGINEERING
October 5, 2022
Heather Coats
Beach & Inlet Management Project Coordinator
North Carolina Division of Coastal Management
127 Cardinal Drive
Wilmington, NC 28405
COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC
4038 MASONBORO LOOP ROAD
WILMINGTON, NC 28409
910-399-1905
Subject: Request for Permit Modification (Major Permit 113-21) — Modification of Dunes for
Construction Access at Port Trinitie
Dear Ms. Coats:
On behalf of the Town of Duck, I am requesting a minor modification of the CAMA Major Permit 113-21 issued
September 1, 2021. As discussed during our meeting on September 28, 2022, the drawings submitted with the permit
application dated February 3, 2021, included a construction access at Port Trinitie located at the end of Quarterdeck Dr.
between baseline stations D-14 and D-13. The temporary construction access was shown in a location where vegetation
exists, and no established access is present. During our meeting on September 28, 2022, you pointed out that although
the access was shown on the drawings referenced in the permit, Condition #10 states "Land -based equipment necessary
for beach nourishment work shall be brought to the site through existing accesses. Should the work result in any damage
to existing accesses, the accesses shall be restored to pre -project conditions immediately upon project completion in that
specific area." Furthermore, the permit notes that "The permittee is advised that any new access site would require a
modification of this permit."
The Town of Duck is working to secure a construction access easement for the proposed locations at Port Trinitie. The
temporary access proposed for Port Trinitie would be restored back to pre -project conditions following the completion
of the project. A description of the proposed action, plan view and cross sections are provided for your consideration.
The proposed construction access at Port Trinitie runs from the approximate location of a timber fence toward the
landward toe of the existing dune and runs east toward the beach. Figure 1 shows a ground photo taken October 4, 2022
of the dune and the fence. The contractor will remove the fence and establish a 15-foot wide access from the fence line
to the beach. The access would be aligned perpendicular to the dune. The access would slope up from the fence line at
20H:1V slope to elevation +15 ft. NAVD88 and then maintain a +15 ft. NAVD88 elevation for approximately 20 feet.
At that point the access would slope down toward the beach on a 20H:1V slope to the +10 ft. NAVD88 contour. Material
cut from off the top of the dune to establish the temporary construction access will be pushed seaward and used to create
the 20H:1V slope down to the existing grade. Following completion of the project, the contractor would restore the
dune topography to pre -project condition and re -vegetate the dune. Figure 2 provides a plan view showing the location
of the proposed access. Figure 3 provides cross sections along the proposed access showing the existing condition and
modified construction access condition.
Page 1 of 5

Figure 1. Digital photograph taken October 4, 2022 showing the fence to be removed parallel to the dune line, which is also the landward location of where
modifications will be made to establish the temporary construction access.
Page 2 of 5

Profile View Center of proposed access
Figure 2. Cross section of the proposed temporary construction access at Port Trinitie. Horizontal and vertical scale are in feet.
Page 3 of 5

Figure 3. Plan view map showing proposed location of temporary construction access at Port Trinitie.
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WMI #
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DATE
2022.10.03
PROJECT NO.
SAW-2021-00567
SHEET
1

At present the contractor is proposing to begin construction in late October. Please feel free to contact me anytime for
further clarification or explanation of the proposed temporary accesses.
Very truly yours,
COASTAL ROTECTION ENGINEERING OF NORTH CAROLINA, INC.
Ken Willson
Project Manager
CC:
Josh Pelletier, USACE
Sandy Cross, Town of Duck
Adam Priest, CPE
Brad Rosov, CPE
Page 5 of 5