HomeMy WebLinkAboutDCM Written Notice 11/2/2020COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC
4038 MASONBORo Loop ROAD
WILMINGTON, NC 28409
910-399-1905
November 2, 2020
Heather Coats
Beach & Inlet Management Project Coordinator
North Carolina Division of Coastal Management
127 Cardinal Drive
Wilmington, NC28405
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 proposed Hatteras Inlet
Channel Maintenance Project on December 22, 2016 (#129-16). This permit was subsequently renewed
on January 22, 2020 and has a current 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 November 02, 2020, 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 "South Ferry Channel". The attached plan view drawing shows the location
of the proposed channel, the disposal area, and previously mapped submerged aquatic vegetation (SAV)
resources in the vicinity. The channel is proposed to be dredged by 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 environmental window for dredging opened October 1. The USACE and Dare County have agreed
on a tentative schedule to begin dredging around November 6, 2020. The actual dredging of the
channel is anticipated to last approximately 16 days. We do not anticipate any issues with dredging
outside of the environmental windows established by the permit for the upcoming proposed
maintenance event. At the time of this letter, it is anticipated that the project will be conducted
between November 6, 2020 and December 1, 2020.
As you are aware, the Major CAMA Permit (#129-16), originally issued in December 2016, was modified
in March 2018 to allow for maintenance of a 200 ft. wide channel to a depth of -12 ft. MLW. Based
budget, dredge availability, and conditional surveys conducted October 15, 2020, the proposed channel
dimensions for this upcoming dredging event are to establish a 150-foot wide channel at elevation -9 ft.
MLW. Based on the conditional survey from October 15, 2020, establishment the proposed channel will
CC OASiAL
PROTECTION
ENGINEERING
COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA
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require the dredging of approximately 20,000 cy of material. The proposed channel is shown on the
attached drawings, including both plan view and cross -sectional view.
As required by the permit, we have contacted Don Field with NOAA to determine if any updated
imagery is available for the project area to delineate SAV habitat. Mr. Field responded that the
Albemarle Pamlico National Estuary Partnership (APNEP) collected new imagery in May/June 2020;
however, the contractor has not yet provided updated interpretations. We have requested the imagery
and will provide any relevant updates.
Regarding contact information during dredge activities, Bob Keistler of the USACE will be the point of
contact for the USACE dredging operations. Bob's Phone Number is (910) 612-7611 and his email is
robert.w.keistler@usace.army.mil. I will be the County's agent and can be contacted via cell phone at
(910) 443-4471.
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: 910-443-4471
kwillson@coastalprotectionengcom
CC:
Brent Johnson, Dare County
Jonathan Howell, NC DCM
Gregg Bodnar, NC DCM
Garcy Ward, NC DWR
Robert Pullinger, NC DWR
CHARLOTTE
N.T.S.
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
0 7500 15000
GRAPHIC SCALE IN FT
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CAPE FEAR
HATTERAS INLET MAINTENANCE PROJECT
DARE COUNTY, NORTH CAROLINA
CAPE HATTERAS
PROJECT LOCATION
REHEAD CITY
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GENERAL
NOTES:
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1.
COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
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DATUM 1983, (NAD83)
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2.
ELEVATIONS ARE REFERENCED TO MLLW. PERMITTED DREDGE DEPTH IS RELATIVE TO THE MLW DATUM BEING
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APPROXIMATELY 0.08' ABOVE MLLW PER NOAA PID EX0400.
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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. OCTOBER 15, 2020.
5.
BATHYMETRIC CONTOURS REPRESENT THE CONDITIONS OF THE CHANNEL ON OCTOBER 15, 2020 AND SHOULD
NOT BE RELIED ON FOR NAVIGATION PURPOSES.
LEGEND
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DISTANCE ALONG SECTION (FEET)
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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.
CROSS SECTION C-C'
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EL. +0.08'
OCTOBER 15, 2020
EXISTING GRADE
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MAXIMUM AD EL. =-11.92'
CHANNEL
WIDTH 1W
DISTANCE ALONG SECTION (FEET)
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