Hatteras Inlet Project Report 1/29/2019

APTIM
January 29, 2019
David Bemhart
NMFS—Protected Resources Division
26313th Avenue South
St Petersburg, FL 33701
Subject Hatteras Inlet Project Report (USACE Action ID. SAW-2016-02140)
Dear Mr. Bemhart
Kenneth Willson
Progrmn M�mager
Apflm Coastal Pimamng & Engineering of North
Carolinq Inc.
4038 Masonboro Loop Road
Wilmington, North Carolina
Tel:[phone]
Keme0r.Willson@aptim corn
This letter serves as the project report required by special condition #24 of the above referenced permit, which allowed
Dare County to conduct maintenance dredging within the Connector Channel Corridor located between Ocracoke
Island and Hatteras Island, North Carolina. Special condition#24 requires that a project report summarizing the result:
of the dredging and the sea turtle take (if any) be submitted to NMFS within 30 working days of completion and that
the reports shall contain information on projectlocatioq start up and completion dates, cubic yards of material dredged,
incidental takings (include photographs, if available) and sightings of protected species, mitigating actions taken,
screening type (inflow, overflow) utilized, daily water temperatures, name of dredge, names of endangered species
observers, percent observer coverage, and any other information the contractor deems relevant
Project Description:
On December 16, 2018, the US Army Corps of Engineers (USACE) operated Special Purpose Dredge Caocturk began
dredging in the Connector Channel/South Ferry Channel in the vicinity of Hatteras Inlet The Dredge Cumteak
conducted maintenance dredging in the channel for four (4) days through December 19. Following a short break for
the Christmas holiday, the Dredge Cunctwk resumed operations on December 29 and conducted maintenance dredging
of the channel through]anuary 2, 2019. Due to scheduled maintenance requirement: and other scheduling factors, the
USACE pulled the Dredge Caocturk from the project and replaced it with the Special Purpose Dredge Marden. TheDredge
Marden arrived on site January 4 and completed dredge operations on]anuary 14.
During the first 4 days of dredge operations, the Dredge Cumteak utilized the temporary disposal site approved by state
and federal agencies. Material placed in the temporary disposal site was later removed and disposed of in the offshored
disposal area.
The Wilmington District USACE provided hydrographic survey charts showing the pre -construction (December 12,
2018) and post -construction January 15, 2019) depths in the channel. These maps are included as an attachment to
this letter (Attachment 1 — Connector Channel Maps). A comparison of the pre -construction survey conducted on
December 12, 2018 and post -construction surveys conducted on]anuary 15, 2019, indicated that approximately 20,000
cubic yards of material was removed from the channel and associated side slopes. The removal of the material resulted
in controlling depths of approximately -8 ft mean lower low water (MLLW) through the South Ferry Channel. The
resulting channel is approximately 150 feet wide.

Mitigation Actions and Observations:
No dredge operations associated with this event occurred between April 1 and September 30. The goal of the December
2018/Jmuary 2019 maintenance event was to establish amore direct channel orientation to the inlet gorge cuttingacross
a linear shoal and establishing an approximately 8 ft. deep channel with bottom width of approximately 150 ft.
APTIM staff coordinated closely with both NC DCM and USACE regulatory staff on the progress of the project. In
accordance with the permit construction activities complied with the "Guidelines for Avoiding Impacts to the West
Indian Manatee". Furthermore, the project did not place any material above the MLW to avoid impacts to federally
listed Seabeach Amaranth, Piping Plover, Red Knot Green sea turtle, Hawksbill sea turtle, Kemp's ridley sea turtle,
Leatherback sea turtle, Loggerhead sea turtle, and their habitat.
To the knowledge of the contractor, no protected federally listed species was killed, injured, captured, harassed, or
otherwise harmed by the conduct of the maintenance activities (i.e. no incidental takings(. No protected species were
observed during the conduct of the work; however, protected species observers were not required as a condition of the
permit During the initial three (3) days of dredge operations, the USACE utilizized the permitted Temporary Disposal
Area located on the south west side of the proposed channel to allow for more efficient dredge operations. Once
sufficient channel depths had been achieved to efficiently load the dredge and travel to the offshore disposal site, the
material dredged from the channel and the material dumped in the temporary disposal site was transported and disposed
of in the designated nearshored disposal site as shown on the attached drawings.
Please feel free to contact me should you have any additional questions regarding this project.
Very truly yours,
APTIM COAS AL PLANNING &ENGINEERING OF NORTH CAROLINA, INC.
Ken Willson
Project Manager
CC: Josh Pelletier —USAGE
Fritz Rhode —NMFS-HCD
Heather Coats — NC DCM
Gregg Bodnar — NC DCM
Bobby Outten — Dare County
Attachments: Attachment 1 — Pre -Construction and Post -Construction Survey Charts
Attachment 2 — Construction Drawings

75°46'45"W
15"W
�i
i
0
N
M
15
in
M
® 1:3,000
0 100 200 400 600 800
Feet
I�
+
ESTIMATED MATERIAL IN
DREDGE BOX AS OF DECEMBER 12, 2018
16,026 CY @ -81FT
47,984 CY @ -1 OFT
88,237 CY @ -12FT
BOX CUT
X 2964077
Y 540079
Let 35° 11' 27.254" N
+ Long 75° 46' 21.246" W
6 7
8 9 ] 8 7 6 7 6 6 i •, b
] �.
6 6 6
9 88 8 9 9 8 8 9 10 87 8 7 7 67 6 7 6
10 9 9 9 9 8 8 11 6 9 8 6 6 8 6 6
9 8 7 7 7 6
11 9 6 10 9 10 0 0 0 9 9 ] 6 7 ] 6 ] 6
X 2964097
Y 539880
Let 35° 11' 25.280" N
Lonq 75° 46' 21.088" W
APPROXIMATE LOCATION OF
TEMPORARYUSACE
DISPOSAL SITE
Ocracoke Island
+
9 10
1 g
910
1
110111
10 10
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REFERENCE SURFACE TINS USED FOR ESTIMATED QUANTITY CALCULATIONS INCLUDE:
OSC8FT_TEMP TIN_20181212
OSC_1OFT_TEMP TIN_20181212
OSC_12FT_TE M P_TI N_20181212
\\SAW-NETAPP2\SHARED\NAV\SURVEYS\HATTERAS\OCRACOKE STATE CHANNEL\2018\12 12 BD\QTY
X 2966588
Y 540335
Lat 35° 11' 28.974" N
onq 75° 45' 50.905" %
It6 6 6
6 6 1 6 6 7 6 6
0.
61 IL 6I67d E
1SF !
X 2967384
Y 540313
Let 35' 11' 28.497" N
ona 75° 45' 41.332" �
6 6 5 7 12
61,1 6 6 7
9
7 7 6 10
6 6 6 6
fi 7 1
7 1 6 1
6 6 7
AN 7 8A1 c 7 8
X 2966608
Y 540135
Lat 350 11' 26.985" N
Long 75° 45' 50.748" �
LEGEND
Aids to Navigation
1
Green Light
Depth In Feet
= 4 and Shallower
Can
!
Red Light
_ 6-4
Nun
Green Daybeacon
7-6
8 7
Red Daybeacon
10-8
Green Lighted Buoy
O
Danger Sign
12-10
0
Mileboard
14 12
Red Lighted Buoy
- 15 - 14
Marker
Tide Gage
- 15 and Deeper
Junction
Matchlines
X 2967378
Y 540113
Let 350 11' 26.522" N
ono 75' 45' 41.478" �
+
Matchline
Hatteras Inlet
NOTES:
1. ELEVATIONS ARE IN FEETAND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (Ml RELATIVE TO THE 1983-2001 TIDAL EPOCH.
2. PROJECT SURVEYED WITH DISTRICT SURVEY VESSEL "POTTER ", USING RTK GPS
HORIZONTAL POSITIONING EQUIPMENTAND 200 KHZ SOUNDING EQUIPMENT.
3. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM M.L.L.W..
4. TIDE GAGE LOCATED AT VILLAGE MARINA
USE OF TIDE VALUES FOR THIS GAGE ARE RESTRICTED TO QUALITY ASSURANCE PURPOSES
FOR VERIFICATION OF RTK TIDES. THE WILMINGTON DISTRICT WILL ONLY USE STAFF
GAGE TIDAL VALUES FOR FINAL MAPPING AND QUANTITY CALCULATIONS IF RTK GPS IS UN-
AVAILABLE AT THE TIME OF SURVEY.
5. THE INFORMATION DEPICTED ON THIS SURVEY MAP REPRESENTS THE RESULTS OF SURVEYS
MADE ON THE DATES INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE GENERAL
CONDITIONS EXISTING AT THAT TIME. THESE CONDITIONS ARE SUBJECT TO RAPID CHANGE
DUE TO SHOALING EVENTS. A PRUDENT MARINER SHOULD NOT RELY EXCLUSIVELY ON THE
INFORMATION PROVIDED HERE. REQUIRED BY 33 CFR 209.325
7. NAVIGATION AIDS LOCATED WITH DISTRICT SURVEY VESSEL, ACCURACY +/- 3 METERS.
S. SURVEY CONDUCTED BY US ARMY CORPS OF ENGINEERS, WILMINGTON DISTRICT.
TYPICAL SECTION
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REFERENCE SURFACE TINS USED FOR ESTIMATED QUANTITY CALCULATIONS INCLUDE:
OSC_8FT_TEMP _TIN_20181212
OSC_10FTTEMP _TIN _20181212
OSC_12FT__TEMP_TIN_20181212
\\SAW-NETAPP2\SHARED\NAV\SURVEYS\HATTERAS\OCRACOKE_STATE_CHANNEL\2018\12_12_BD\QTY
k
Matchline
Hatteras Inlet
1
LEGEND
Aids to Navigation
1
Green Light
Depth In Feet
= 4 and Shallower
•
b
Can
Red Light
= 8 -4
Green Daybeacon
= 7-8
Nun
8 7
Red Daybeacon
- 10-8
Green Lighted Buoy
Q
Danger Sign
12-10
0
Mileboard
- 14 12
Red Lighted Buoy
- 15 - 14
Tide Gage
- 15 and Deeper
Junction Marker
Matchlines
30 32 32 30 29 28 26 2C
L3123027 26 24 20
26 23 20
9 29 26 22 30 29 27
30
8 27
28 29 30
+
NOTES:
1. ELEVATIONS ARE IN FEETAND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (MLLW) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
2. PROJECT SURVEYED WITH DISTRICT SURVEY VESSEL "POTTER ", USING RTK GPS
HORIZONTAL POSITIONING EQUIPMENTAND 200 KHZ SOUNDING EQUIPMENT.
3. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM M.L.L.W..
4. TIDE GAGE LOCATED AT: BOARD @ HATTERAS VILLAGE MARINAI NOAA GUAGE STATION HATTERA
USE OF TIDE VALUES FOR THIS GAGE ARE RESTRICTED TO QUALITY ASSURANCE PURPOSES
FOR VERIFICATION OF RTK TIDES. THE WILMINGTON DISTRICT WILL ONLY USE STAFF
GAGE TIDAL VALUES FOR FINAL MAPPING AND QUANTITY CALCULATIONS IF RTK GPS IS UN-
AVAILABLE AT THE TIME OF SURVEY.
5. THE INFORMATION DEPICTED ON THIS SURVEY MAP REPRESENTS THE RESULTS OF SURVEYS
MADE ON THE DATES INDICATEDAND CAN ONLY BE CONSIDEREDAS INDICATING THE GENERAL
CONDITIONS EXISTING AT THAT TIME. THESE CONDITIONS ARE SUBJECT TO RAPID CHANGE
DUE TO SHOALING EVENTS. A PRUDENT MARINER SHOULD NOT RELY EXCLUSIVELY ON THE
INFORMATION PROVIDED HERE. REQUIRED BY 33 CFR 209.325
7. NAVIGATION AIDS LOCATED WITH DISTRICT SURVEY VESSEL, ACCURACY +1-3 METERS.
8. SURVEY CONDUCTED BY US ARMY CORPS OF ENGINEERS, WILMINGTON DISTRICT.
:.
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75046'45"W
75046'15"W

HATTERAS INLET MAINTENANCE PROJECT
PROJECT AREA
HATTERAS
HATTERAS
OCRACOKE INLET
ISLAND
ATLANTIC OCEAN
0 7500��ls
GRAPHIC SCALE IN FT
RALEIGH O�NP
CHARLOTTE
N.T.S.
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
CAPE FEAR
DARE COUNTY, NORTH CAROLINA
CAPE HATTERAS
PROJECT LOCATION
REHEAD CRY
LOOKOUT
ATLANTIC
OCEAN
SHEETINDEX
1 COVER SHEET
2 PRO]ECT OVERVIEW
3 CONNECTOR CHANNEL PLAN VIEW
4 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 MLW.
3. DATE OF AERIAL PHOTOGRAPHY: CS-1 AND PV-1 ESRI ]ANUARY 2016, PV-2 NCDOT HATTERAS IMAGE MARCH 2O16.
4. SURVEY DATA COLLECTED BY US ARMY CORPS OF ENGINEERS. DECEMBER 12, 2018.
5. BATHYMETRIC CONTOURS REPRESENT THE CONDITIONS OF THE CHANNEL ON DECEMBER 12, 2018 AND SHOULD
NOT BE RELIED ON FOR NAVIGATION PURPOSES.
LEGEND
—••—••— MEAN LOW WATER LINE
®EE'
s
MEAN HIGH WATER LINE
— — — — CROSS SECTION LINE
Q HAT-03-V-18 HATTERAS INLET BORINGS 2003 AND ID
j
NEARSHORE DISPOSAL AREA
4
SUBMERGED AQUATIC VEGETATION AND 100 FT. BUFFER
i
ASBUILT EXISTING CABLE ROUTE (CALDWELL CABLE VENTURES)
EXISTING CABLE ROUTE(UTLTTY ELECTRICAL CONSULTANTS, PC)
ASBUILT NEW CABLE ROUTE
CS-1

9
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
CULTURAL RESOURCE
SURVEY AREA
\, 1 \l,N
PAMLICO SOUND
L
\ l
CONNECTOR
CHANNEL CORRIDOR
/ \ HAT-03-V-17 0
0 HAT-03-V-15
AT-03-V-18
HAT-03 V-19
OCRACOKE
ISLAND
LIFE SAVING STATION
AVOIDANCE AREA
0
HAT-03-V-14
CHARTED WRECK
AVOIDANCE AREA
0 HAT-03-V-11
0 OHAT-03-V-12
HAT-03-V-13
/ HATTERAS
/ \ \ INLET
HAT-03-V-6
0
HAT-03-V-7
0
-03-V-9 0 0
HAT-03-V-8
V-10
HATTE RAS 1<10
ee
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LOCATION Z U.
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GRAPHIC SCALE IN FT
PV-1
SHEE 2 OF 4

BOTTOM OF CUT/ CHANNEL
COORDINATE TABLE
POINT ID
NORTHING
EASTING
ELEVATION
A
540079.0
2964077.0
-12.0
B
540335.0
2966588.0
-12.0
C
540313.0
2967384.0
-12.0
D
540113.0
2967378.0
-12.0
E
540135.0
2966608.0
-12.0
F
539880.0
2964097.0
-12.0
LIFE SAVING STATION \
AVOIDANCE AREA
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
CHARTED WRECK
AVOIDANCE AREA
APPROXIMATE LOCATION OF TEMPORARY
DISPOSAL SITE. USACE IS PROPOSING TO
TEMPORARILY PLACE APPROXIMATELY 500 C.Y.
IN THIS AREA. THE AREA WILL ONLY BE USED
UNTIL THE DREDGE HAS ENOUGH DEPTH TO GET
ACROSS THE SHOAL. THE DREDGE WILL THEN
RETURN AND PICK UP THE MATERIAL AND TAKE
IT TO THE NEAR SHORE DISPOSAL SITE.
C
HATTERAS
INLET
BREAKING SHOAL
AVOIDANCEAREA
'z
\ W
z
z
� W
0
\ 200400
�11004
GRAPHIC SCALE IN FT _
L
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CULTURAL RESOURCE
ASURVEY AREA i I
9 `�QQ
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J # R8
PROPOSED CONNECTOR
CHANNEL \♦ jg;
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£CGS
Z
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PV-2
SHED 3 OF

] CROSS SECTION A -A'
B-IJ' C-C'
5 1 1 1 5
MHW EL. +0.42'
p
— —.
---.MLW
p
EL. +0.00'
W
DECEMBER 12, 2018
EXISTING GRADE
5
. . . . . . . . . . . . . . . . . . . . . ..
-5
90
z EL. -12.0'
. . . r
MLW
-10
H
(
15
11
15
w
MAXIMUM AD EL. CONNECTOR CHANNEL EXTENDS
W
-12TO EQUAL DEPTH AT
= .0' MLW
-20
TIME OF CONSTRUCTION
-20
-25
-25
DISTANCE ALONG SECTION (FEET)
CROSS SECTION B-B'
5
CROSS SECTION C-C'
A -A'
DECEMBER 12,
5
2018
A -A'
MHW EL. +0.42'
EXISTING GRADE
MLW EL. +0.00'
DECEMBER 12, 2018
MHW EL. +0_42'
EXISTING GRADE
W
w p
MLW EL. +0.00'
0
5
1 L
J 1
g 5
5
0
10
3'
3 EL. -12.0' MLW
-10
Z
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CHANNEL
WIDTH 200'
�.
10
1 L .
.�.
10
J
15
.�
15
EjL. -12.0' MLW
w
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CHANNEL 3
WIDTH 200'
W
_
w 15
. .. .
_ 15
20
. . .
. . . . .
20
MAXIMUM AD EL.
MAXIMUM AD EL.
_ -12.0' MLW
= -12.0' MLW
-20_
_ _ _
-20
-25_
_ _
-25
DISTANCE ALONG SECTION (FEET)
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
DISTANCE ALONG SECTION (FEET)
0 5 10
VERTICAL GRAPHIC SCALE IN FT
0` 250 500
HORIZONTAL GRAPHIC SCALE IN FT
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