20131279 Ver 4_CAMA Application_20180326

Coastal Management
ENVIRONMENTAL QUALITY
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MAR 2 6 2018
DE -0 -WATER RESOURCES
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MEMORANDUM
TO: Ms. Karen Higgins
Env. Biological Supervisor
Division of Water Quality Wetlands Unit
FROM: Greg Bodnar
Major Permits Processing Coordinator
Coastal Management Division
400 Commerce Avenue
Morehead City NC 28557
DATE: 23 March 2018
SUBJECT: CAMA Application Review
APPLICANT: NC Wildlife Resources Commission
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRAXTON C. DAVIS
Director
Respond to Greg Bodnar
Morehead City Office
PROJECT LOCATION: Project site is located inside Hatteras Inlet adjacent the east side of the inlet gorge 1.2
miles northwest of Ocracoke Island in the Pamlico Sound, Dare County, North Carolina.
PROPOSED PROJECT: Applicant proposes to fill an area (+24 acres) on an existing shoal to create a sandy
upland island for colonial bird habitat using dredge spoil from maintenance of nearby navigational channels
including those authorized by CAMA/Dredge and Fill permit no. 129-16.
Please indicate below your position or viewpoint on the proposed project and return this form by 13 April 2018.
Please contact Steve Trowell at 252-948-3854, if you have any questions regarding the proposed project. When
appropriate, in depth comments with supporting data are requested.
REPLY
Signed
This office has no objection to the project as proposed.
This office has no comment on the proposed project.
This office approves of the proposed project only if the recommended changes are
incorporated. See attached.
This office objects to the proposed project for reasons described in the attached
comments.
Date
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DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
APPLICANT'S NAME: North Carolina Wildlife Resource Commission
2. LOCATION OF PROJECT SITE: The proposed project area ("DOT Island") is located inside Hatteras Inlet
adjacent the east side of the inlet gorge 1.2 miles northwest of Ocracoke Island in the Pamlico Sound, Dare
County, North Carolina.
Latitude and Longitude: 35'12'14.84"N and 75°45"45.35"W
3. INVESTIGATION TYPE: CAMA/Dredge and Fill
4. INVESTIGATIVE PROCEDURE: Dates of Site Visit — 20 September 2017
Was Applicant Present - No
5. PROCESSING PROCEDURE: Application Received —19 March 2018
Office - Washington
6. SITE DESCRIPTION:
(A) Local Land Use Plan - Dare County
Land Classification - Conservation (Water)
(B) AEC(s) Involved: EW, PTA
(D) Water Dependent: Yes
(D) Intended Use: Public
(E) Wastewater Treatment: Existing — N/A
Planned - N/A
(F) Type of Structures: Existing — Natural and dredged channel(s).
Planned — Dredge spoil island for colonial nesting birds
(G) Estimated Annual Rate of Erosion: N/A.
7. HABITAT DESCRIPTION: [AREA]
DREDGED R .r.Fn nTT-R1?
(A) Vegetated Wetlands
(B) Non -Vegetated Wetlands
Variable/Unknown
1,081,356 ft2
Pamlico Sound Bottom
(C) Other
(Uplands)
(D) Total Area Disturbed: 1,081,356 ft2 (24 acres)
(E) Primary Nursery Area: No
(F) Water Classification: SA HQW
Open: Yes
8. PROJECT SUMMARY: The applicant proposes to fill an area (±24 acres) on an existing shoal to create a
sandy upland island for colonial bird habitat using dredge spoil from maintenance of nearby navigational
channels including those authorized by CAMA/Dredge and Fill permit no. 129-16.

North Carolina Wildlife Resources Commission
DOT Island Restoration
Pamlico Sound/Hatteras Inlet
Dare County
Project Setting
The project site is located on the east side of the Hatteras Inlet gorge just inside of the inlet
in Dare County near Hatteras Village, North Carolina. The project site was once a ±25 -acre island
comprised of both upland and Coastal Wetland marsh habitat reported to be a result of spoil
deposition from nearby navigation channels. This island was an important nesting and roosting
area for colonial nesting waterbirds. As the west end of Hatteras inlet has receded and Hatteras
inlet has widened, this island has become increasingly subject to ocean generated wave action.
Erosion overtime especially in the last ten years has eliminated the upland habitat on the island
and all that remains is a ±5 -acre homogenous stand of Spartina alterniflora marsh. The Spartina
alterniflora marsh is growing on a dark organic peat at or slightly above, the normal water level
(NWL). The southeast facing shoreline is directly affected by ocean swells which deposit sand
from the adjacent sandy shoal onto the marsh during storm events. This sand is continually shaped
and relocated interior on the island depending of the strength of the storm and associated tide
levels. Tide levels at this site have are effected more by wind tides than lunar tides every 6 hours.
Northwest winds generate the highest wind tides on average at this location. Pieces of the marsh
peat break off and are scattered around the island.
The nearshore area adjacent the island on the southeast side is a generally shallow sandy
shoal, less than 2' deep. A channel with direct connection to the inlet gorge interacts with the
island on the northwest side. Because of the islands proximity to the inlet and inlet gorge, tidal
currents are concentrated with strong velocity flow around the island. The wave and tidal energy
in this area and resultant shifting sandy shoals are too dynamic to support the pioneering and
growth of submerged aquatic vegetation and shellfish, although SAV is located 3,000 to 4,000 feet
from this proposed island..
This area of Pamlico Sound near Hatteras Inlet is designated as SA HQW by the
Environmental Management Commission, Coastal Waters by the Marine Fisheries Commission
and is open to shellfishing.
Project Description
The applicant proposes to recreate the upland habitat for nesting colonial birds using
dredged sand from nearby navigational channels including the "connector channels" that have
received maintenance events recently under Major CAMA./Dredge and Fill permit no. 129-16. A
hydraulic pipeline dredge will pump sand onto the shoal on the southeast side of the island. The
"control -of -effluent" method developed by the US Army Corps of Engineers will be utilized to
create one or more "domes" not to exceed 15' in height. Once enough sand has been put in place
a bulldozer will be barged to the site to manipulate and shape the sandy dome. The southeast
facing shoreline will have the flattest slope at 30':1'. All other slopes are not to exceed a slope

North Carolina Wildlife Resources Commission
DOT Island Restoration
Pamlico Sound/Hatteras Inlet
Dare County
Page Two
greater than 3':1'. The discharge will be controlled to prevent the discharge of spoils onto the
existing marsh island. If necessary, silt fence along with a berm will be used to direct and prevent
sediments from entering the Spartina alterniflora marsh. The applicant also proposes to employ a
sediment boom around the area receiving dredge spoils. The applicant commits to a "Discharge
Plan" to be developed by the dredging contractor based on the contractor's capabilities to be
approved "by the agencies" prior to the dredge event. The applicant proposes to partner with the
North Carolina Coastal Federation to plant Spartina spp. and possibly cedars along the southeast
facing shoreline. The amount of sand received during a dredging event will be based on the amount
necessary to reach authorized channel dimensions. The applicant reports that it will take 569,454
cubic yards of sand to build the island to 25 acres (20 acres proposed plus 5 acres existing).
Project Impacts
The project as proposed will result in the filling of shallow sandy shoal habitat in an inlet
complex subject to strong tidal currents and ocean swells. The deposition of dredged sand will
increase the amount of sediment in transport in the adjacent aquatic habitats and the associated
impacts. If successful in recreating upland habitat, the project will provide nesting and roosting
habitat for colonial nesting birds.
Steve Trowell — Washington Regional Office —14 March 2018

IN UP -1 RECEI�IE©
APPLICATION for MAR 19 2018
Nivor Development Permit DCM_wARo
(last revised 12/27/06)
North Carolina DIVISION OF COASTAL MANAGEMENT
12. Agent/Contractor Information
Business Name
Agent/ Contractor 1: First Name
MI Last Name
Agent/ Contractor 2: First Name
MI Last Name
Mailing Address
PO Box
City
State
ZIP
Phone No. 1 Phone No. 2
ext. ext.
Contractor #
FAX No.
Street Address (if different from above)
City
State
ZIP
Email
<Form continues on back>
252-808-2808 .. 1-888-4RCOAST .- www.nccoastaimanagement.net

Form DCM MP -1 (Page 2 of 5)
3. Project Location
County (can be multiple) Street Address
Dare I n/a
Subdivision Name
Phone No.
- n/a - ext.
APPLICATION for
Major Development Permit
State Rd. #
n/a
City State Zip
Hatteras NC 27943-
I
7943 -
Lot No. (if mIany, attach additional page with list)
a. In which NC river basin is the project located?
Pasquotank
c. Is the water body identified in (b) above, natural or manmade?
®Natural ❑Manmade ❑Unknown
e. Is proposed work within city limits or planning jurisdiction?
❑Yes ONO
4. Site Description
a. Total length of shoreline on the tract (ft.)
2,026 ft
c. Size of individual lot(s)
, n/a,
(If many lot sizes, please attach additional page with a list)
e. Vegetation on tract
Spartina alternflora
b. Name of body of water nearest to proposed project
Pamlico Sound
d. Name the closest major water body to the proposed project site.
Pamlico Sound
f. If applicable, list the planning jurisdiction or city limit the proposed
work falls within.
UNP, 19 Volu
b. Size of entire tract (sq.ft.) II�� ��
217,800 sq. ft. �� r►
d. Approximate elevation of tract above (normal high water) or
NWL (normal water level)
1 ft ❑NHW or ®NWL
f. Man-made features and uses now on tract
No structures on tract; use is for waterbird nesting (NCWRC conservation lands); some winter recreation
g. Identify and describe the existing land uses admiacent to the proposed project site.
The site is an island; therefore, there are no adjacent lands on which there are uses.
h. How does local government zone the tract? i. Is the proposed project consistent with the applicable zoning?
State property (Attach zoning compliance certificate, if applicable)
❑Yes []No NNA
j. Is the proposed activity part of an urban waterfront redevelopment proposal? ❑Yes ONO
k. Hasa professional archaeological assessment been done for the tract? If yes, attach a copy. []Yes NNo NNA
44 Ues, by Com?
LU
I. the pr sed project located in a National Registered Historic District or does it involve a []Yes ONO ❑NA
�lational�egister listed or eligible property?
0
L c <Form continues on next page>
C
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252-808-2808 :. 1-888-4RCOAST :: www.nccoastalmanagement.net

Form DCM MP -1 (Page 3 of 5)
RECEIVE® APPLICATION for
Major Development Permit
MAR 1 4 2niR
m. (i) Are there wetlands on the site?
®Yes ❑No
A
(ii) Are there coastal wetlands on the site? D C M— a Y��l AR o
®Yes [:1 No
(iii) If yes to either (i) or (ii) above, has a delineation been conducted?
®Yes ❑No
(Attach documentation, if available)
n. Describe existing wastewater treatment facilities.
N/A
RECEIVED
o. Describe existing drinking water supply source.
MAR 19 20 18
N/A
p. Describe existing storm water management or treatment systems.
/�
DC M' Y Y��/ t1R0
N/A
5. Activities and Impacts
a. Will the project be for commercial, public, or private use? ❑Commercial ®Public/Government
❑ Private/Community
b. Give a brief description of purpose, use, and daily operations of the project when complete.
The restored island will provide nesting, foraging, and resting habitats for migratory and resident shore-, sea-, and wading
birds. The island was made from dredged sandy material and has been important bird habitat since the early 1970s;
however, significant area has eroded and been lost. Once restored, the island will again provide significant habitats for birds
and will be posted during the bird nesting season (April 1 - August 31). The island will be open to recreationists from
September 1 - March 30. Therefore, the island will provide much benefit to the public and public resources.
c. Describe the proposed construction methodology, types of construction equipment to be used during construction, the number of each type
of equipment and where it is to be stored.
Replenishment of beach -quality, medium to coarse-grained sand and shell to the island will be accomplished from normal,
maintenance dredging from Permit #129-16 or other permitted projects in the Hatteras Inlet complex. All dredge material
would adhere to any moratoria within permit conditions, with no material being placed on the established island during April 1
- August 31 of any year to avoid impacts to nesting birds. Dredged sand -shell material will be placed in approved areas using
control -of -effluent through a pipeline from a hydraulic dredge. Dredged material will be >90% sand and free of pollutants. No
navigation channels will be impacted. If needed, a bulldozer will be used to contour deposited sand. Construction equipment
will be stored on site.
d. List all development activities you propose.
The development of the site is to create an island for nesting, foragaing and resting habitats for shore-, sea-, and wading
birds..
e. Are the proposed activities maintenance of an existing project, new work, or both? Maintenance and restoration
f. What is the approximate total disturbed land area resulting from the proposed project? 20 ❑Sq.Ft or ®Acres
g. Will the proposed project encroach on any public easement, public accessway or other area ❑Yes ®No DNA
that the public has established use of?
h. Describe location and type of existing and proposed discharges to waters of the state.
Dredged sand -shell material will be discharged from the pipeline of a hydraulic dredge onto sandy -bottom / shallow -water
areas. This area was upland through the late 1980s; however, erosion from storms and normal wave activity reduced the
area above mean high water. Sands from the island have dispersed into nearby waters over the last --30 years. No material
will be discharged into vegetated (emergent or submerged aquatic vegetation) wetlands; only into shallow -water area with a
sandy bottom.
I. Will wastewater or stormwater be discharged into a wetland? ❑Yes ®No [INA
If yes, will this discharged water be of the same salinity as the receiving water? ❑Yes ❑No DNA
252-808-2808 .. 1-888-4RCOAST .. www.nccoastaimanagement.net

Form DCM MP -1 (Page 4 of 5)
Is there any mitigation proposed?
If yes, attach a mitigation proposal.
<Form continues on back>
APPLICATION for
Major Development Permit
Yes ®N o [INA
MAR 19 2018
6. Additional Information
In addition to this completed application form, (MP -1) the following items below, if applicable, must be submitted in ordQ
package to be complete. Items (a) — (t) are always applicable to any major development application. Please consult t ation
instruction booklet on how to properly prepare the required items below.
a. A project narrative.
b. An accurate, dated work plat (including plan view and cross-sectional drawings) drawn to scale. Please give the present status of the
proposed project. Is any portion already complete? If previously authorized work, clearly indicate on maps, plats, drawings to distinguish
between work completed and proposed.
c.A site or location map that is sufficiently detailed to guide agency personnel unfamiliar with the area to the site.
d. A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties.
e. The appropriate application fee. Check or money order made payable to DENR.
f. A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and signed return receipts as proof that such
owners have received a copy of the application and plats by certified mail. Such landowners must be advised that they have 30 days in
which to submit comments on the proposed project to the Division of Coastal Management.
Name Phone No.
Address
Name Phone No.
Address
Name Phone No.
Address
g. A list of previous state or federal permits issued for work on the project tract. Include permit numbers, permittee, and issuing dates.
h. Signed consultant or agent authorization form, if applicable.
i. Wetland delineation, if necessary.
j. A signed AEC hazard notice for projects in oceanfront and inlet areas. (Must be signed by property owner)
k. A statement of compliance with the N.C. Environmental Policy Act (N.C.G.S. 113A 1-10), if necessary. If the project involves expenditure
of public funds or use of public lands, attach a statement documenting compliance with the North Carolina Environmental Policy Act.
7. Certification and Permission to Enter on Land
I understand that any permit issued in response to this application will allow only the development described in the application.
The project will be subject to the conditions and restrictions contained in the permit.
I certify that I am authorized to grant, and do in fact grant permission to representatives of state and federal review agencies to
enter on the aforementioned lands in connection with evaluating information related to this permit application and follow-up
monitoring of the project.
I further ertify tha�,tFje information provided in this applicatio uthfy�likhe best &nWnowledge.
Date �1 6A IV Print Name I 1
Signature
Please indicate application attachments pertaining to your proposed project.
®DCM MP -2 Excavation and Fill Information ❑DCM MP -5 Bridges and Culverts
252-808-2808 .. 1-888-4RCOAST :. www.nccoastalmanagement.net

Form DCM MP -1 (Page 5 of 5)
❑DCM MP -3 Upland Development
❑DCM MP -4 Structures Information
APPLICATION for
Major Development Permit
RECEIVED
MAR 19 2018
DCM-\JVARO
252-808-2808 .. 1-888-4RCOAST -, www. nccoastalmanagement.net

Form DCM MP -2
EXCAVATION and FILL
(Except for bridges and culverts)
Attach this form to Joint Application for CAMA Major Permit, Form DCM MP -1. Be sure to complete all other sections of the Joint
Application that relate to this proposed project. Please include all supplemental information.
Describe below the purpose of proposed excavation and/or fill activities. All values should be given in feet.
1.
Access
❑This section not applicable
a.
Amount of material to be excavated from below NHW or NWL in
b. Type of material to be excavated.
Other
Sand -shell material from channels
Channel
Canal
Boat Basin
Boat Ramp
Rock Groin
Rock
(excluding
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
or other wetlands (WL)? If any boxes are checked, provide the
(NLW or
number of square feet affected.
Breakwater
shoreline
NWL)
(ii) Describe the purpose of the excavation in these areas:
stabilization
�+ p r }� ��
DCM-YYA O
2.
DISPOSAL OF EXCAVATED MATERIAL
❑ This section not applicable
a.
Location of disposal area.
b. Dimensions of disposal area.
Length
929' by1164'
c.
(i) Do you claim title to disposal area?
d. (i) Will a disposal area be available for future maintenance?
®Yes ❑No ❑NA
929'
Width
(ii) If no, attach a letter granting permission from the owner.
(ii) If yes, where?
on same island
e.
1164'
Avg. Existing
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
®Yes ❑No ❑NA
or other wetlands (WL)? If any boxes are checked, provide the
Depth
(ii) If yes, how much water area is affected?
El CW El SAV ❑SB
871,200 sq ft. (20 acres)
N A
NA
Final Project
(ii) Describe the purpose of disposal in these areas:
To create bird nesting habitat in footprint of dredged -material
island originally created in the late 1960s or early 1970s.
Depth
N A
NA
1.
EXCAVATION
❑This section not applicable
a.
Amount of material to be excavated from below NHW or NWL in
b. Type of material to be excavated.
cubic yards.
Sand -shell material from channels
Variable - depends on #129-16
c.
(i) Does the area to be excavated include coastal wetlands/marsh
d. High -ground excavation in cubic yards.
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
or other wetlands (WL)? If any boxes are checked, provide the
RECEIVED
number of square feet affected.
❑cw ❑SAV ❑SB
MAR 19 2018
OWL ®None
(ii) Describe the purpose of the excavation in these areas:
N/A
�+ p r }� ��
DCM-YYA O
2.
DISPOSAL OF EXCAVATED MATERIAL
❑ This section not applicable
a.
Location of disposal area.
b. Dimensions of disposal area.
DOT Island (35.203955, -75.762512)
929' by1164'
c.
(i) Do you claim title to disposal area?
d. (i) Will a disposal area be available for future maintenance?
®Yes ❑No ❑NA
®Yes [--]No [INA
(ii) If no, attach a letter granting permission from the owner.
(ii) If yes, where?
on same island
e.
(i) Does the disposal area include any coastal wetlands/marsh
f. (i) Does the disposal include any area in the water?
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
®Yes ❑No ❑NA
or other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
(ii) If yes, how much water area is affected?
El CW El SAV ❑SB
871,200 sq ft. (20 acres)
OWL ®None
(ii) Describe the purpose of disposal in these areas:
To create bird nesting habitat in footprint of dredged -material
island originally created in the late 1960s or early 1970s.
252-808-2808 :: 1-888-4RCOAST :: www.nccoastalmanaaement.net revised: 12/26/06

Form DCM MP -2 (Excavation and Fill, Page 2 of 3) 1 , ,
3. SHORELINE STABILIZATION ® This section not applicable
(If development is a wood groin, use MP -4 — Structures)
a. Type of shoreline stabilization:
❑Bulkhead ❑Riprap ❑Breakwater/Sill ❑Other:
c. Average distance waterward of NHW or NWL:
e. Type of stabilization material:
g. Number of square feet of fill to be placed below water level.
Bulkhead backfill Riprap
Breakwater/Sill Other.
i. Source of fill material.
D. Lengin.
Width:
d. Maximum distance waterward of NHW or NWL:
f. (i) Has there been shoreline erosion during preceding 12
months?
[]Yes ❑No ❑NA
(ii) If yes, state amount of erosion and source of erosion amount
information.
h. Type of fill material.�V
2p18
G"'ftr, w vvi pAo
4. OTHER FILL ACTIVITIES ❑This section not applicable
(Excluding Shoreline Stabilization)
a fil Will fill material be brouaht to the site? ®Yes []No [1 NA b. (i) Will fill material be placed in coastal wetlands/marsh (CW),
If yes,
(ii) Amount of material to be placed in the water 569,454 cv
(iii) Dimensions of fill area 20 acres
(iv) Purpose of fill
To replenish eroded area of island that is significantly
important to nesting birds, including terns, Black Skimmers,
Brown Pelicans, egrets, herons, ibis, and shorebirds.
During winter and migration, the island has been an
important resting and foraging site for shorebirds (including
the Piping Plover, Red Knot, sandpipers), terns, and Brown
Pelicans.
5. GENERAL
a. How will excavated or fill material be kept on site and erosion
controlled?
Will use control of effluent method; will establish a silt curtain, silt
fence, and berms to further control movement of sandy
materials and finer -grained materials. Side slopes of the island
would be no greater than 3:1 with 30:1 on the ESE side
c. (i) Will navigational aids be required as a result of the project?
❑Yes ®No ❑NA
(ii) If yes, explain what type and how they will be implemented.
submerged aquatic vegetation (SAV), shell bottom (513), or
other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
[-]CW ❑SAV ❑SB
OWL ®None
(ii) Describe the purpose of the fill in these areas:
N/A
b. What type of construction equipment will be used (e.g., dragline,
backhoe, or hydraulic dredge)?
Hydraulic dredge with pipeline will build island. As island builds, a
bulldozer will be barged to the site to manipulate the sediment
to the appropriate parameters. Navigation to the site would be
done following the deepest water to avoid shoals and other
habitats.
d. (i) Will wetlands be crossed in transporting equipment to project
site? ❑Yes ®No ❑NA
(ii) If yes, explain steps that will be taken to avoid or minimize
environmental impacts.
252-808-2808 :: 1-888-4RCOAST :: www.nccoastalmanaAement.net revised: 12/26/06

uate
DOT Island Restoration & Maintenance
Project Name
Kyle Briggs, NCWRC
Applicant Name
Applicant gnature
RECEIVED
mi ,R 19 201E
r � A
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262-808-2808 :: 1-888-4RCOAST :: www.nccoastaimananement.net
revised: 12/26/06

RECEIVED
Narrative for the Restoration of DOT Island MAR 19 2018
Submitted by
DCM-WARD
Sara H. Schweitzer, Ph.D., Wildlife Diversity Biologist, N.C. Wildlife Resources Commission
The overall purpose of this project is to restore manmade habitat that colonial -nesting waterbirds (terns,
skimmers, pelicans, herons, egrets, ibis) used for nesting and roosting since 1977 (Parnell and
Soots 1979; Tables 1 and 2). This key waterbird habitat has been lost due to erosion over the last 30
years. Specifically, objectives are to:
• Restore unvegetated, upland, sandy habitat;
• Maintain Spartina wetlands;
• Enhance habitat for shore- and colonial -nesting waterbirds.
Because DOT Island was created either in the late 1960s or early 1970s from dredged sandy material,
over the decades, Spartina marsh, small creeks, and shallow -water habitats have established. The
proposed placement of dredged material on the island would not impact these sensitive habitats. However,
intertidal habitat and shallow water / shoal habitats on the east-southeast (ESE) side of the island will be
impacted. The latter habitat types will be replaced by sandy upland habitat, sloping gently (30:1) toward
the ESE side of the island. The lower swale of the slope will be new intertidal habitat and will be
colonized by polychaetes, small clams (e.g., Donax spp.), and other benthic macroinvertebrates >1 year
after construction. Hence, there will be only a temporary loss of the benthic community in the intertidal
and shallow water habitats.
The following will provide information about the island, importance of this habitat for multiple waterbird
species, benefits and possible detriments of the project, and proposed methodology.
Location
DOT Island is within the Pamlico Sound (35.203955, -75.762512) and approximately 0.5 mile from the
Hatteras Ferry Channel at Hatteras Inlet (Figs. 1, 2). Shoals and shallow water border the northeast and
east sides of the island.
General Site Features
DOT Island was used as a nesting site by Black Skimmers (Rhynchops niger) and several tern species
from the late 1970s to mid-1980s (Table 1). The island was created in the late 1960s or early 1970s on
subtidal sandy shoals with material dredged from the Hatteras Ferry Channel; however, no documents
could be found to verify its original construction date and specifications. Parnell and Soots (1979:142)
described it as a large island (12-25 ac [5-10 ha]) that received fresh dredged material "almost
constantly." Parnell and Shields (1990) described the island as having, in 1983, two high domes (>_49 ft or
15 m) on the eastern side that sloped gradually to the northern and western edges.
In 1988, vegetation on the island included scattered clumps of sea oats (Uniola paniculata) on the high
domes, to cordgrass (Spartina alterniora, S. patens), seaside pennywort (Hydrocotyle bonariensis), dog -
fennel (Eupatorium spp.), and seashore elder (Iva imbricata) on the lower slopes and swales (Parnell and
Shields 1990). By 1988, early -successional, beach -nesting species (Black Skimmers and all terns but

MBAR 19 2018
2
DCM-WARD
Forster's Terns [Sterna forsteri]) ceased nesting on the island. It is likely that because the percentage of
the island covered by vegetation increased greatly, early successional, beach -nesting species stopped
using the island. In response to increased vegetation cover, numbers of nesting pairs of Laughing Gulls
(Larus atricilla) on DOT Island were significant (Table 2), and there continued to be>1,000 pairs of
Laughing Gulls nesting on DOT Island through 1990; thereafter, few Laughing Gulls have nested on
DOT Island (see Table 2, 2007 and 2017). Forster's Terns continued to nest on wrack within marsh
grasses through 2004, and again in 2017. Species nesting on DOT Island from 2001 to 2017, have
included egrets, herons, ibis, gulls, and Brown Pelicans (Pelecanus occidentalis) — species that select
shrubs, small trees, and thick grasses. Therefore, vegetation on DOT Island has gone through successional
stages of bare sandy ground to thick grasses, shrubs, and small trees, and the island size has decreased
significantly. Tropical storms, hurricanes, and nor'easters affect the size, shape, and land composition of
DOT Island (Fig. 3). Hurricane Matthew, in October 2016, resulted in accretion of narrow stretches of
sand along the northern and eastern sides of DOT Island, and in June 2017, Common Terns (Sterna
hirundo) and Black Skimmers nested on sandy, raised areas in small numbers. This quick use of sandy
habitat demonstrates the colonizing nature of these species and the need for nesting habitat in this area of
the Pamlico Sound.
A survey of DOT Island on 14 and 15 January 2014 (Schweitzer and Abraham, NCWRC), determined the
area at high tide to be 7 ac (3 ha) and 17.5 ac (7.1 ha) at low tide. Most (5.8 ac or 2.3 ha) of the island
above high tide is vegetated by Spartina alterniora with tidal streams through it. There is a small area of
sandy upland at high tide. Substrate of the intertidal area (I 1 ac or 4 ha) is unvegetated sand, likely eroded
from the domes present in the 1970s and 1980s. The intertidal and shallow -water areas are on tLem
northeastern to eastern sides of the island. A small number of dead trees remainedo�edge of
the island through 2015, on the small upland, sandy area. This latter area is where eronss�fi �d
Brown Pelicans have nested. During surveys in 2017 by NCDOT, NCWRC, and NC CRR��t}lwmtion
staff, changes in size (5 ac or 2 ha) and configuration of the island were noted, and du�'fii'impacts to the
island from storm events, its shape and size will continue to change. ,At A�o
oc ��V`+
Site Drainage Features �v�
Because the deposited material will be beach grade sand and shell, little material is expected to flow off-
site. This coarse material is also less susceptible to erosion from storm runoff. No culverts or ditches will
be constructed. Colonial -nesting waterbirds prefer a gentle slope toward the water where young birds can
gather in creches and be fed easily, and this gentle slope (30:1) will also reduce erosion.
Erosion Control Measures and Discussion of Vegetation
The person responsible for erosion control measures is Sara H. Schweitzer, NCWRC, Wildlife Diversity
Biologist, Coastal Waterbirds Investigations and Management Project, 252-639-8435. Because the
primary purpose of restoring the site is to support nesting populations of terns, skimmers, and shorebirds,
there will be no vegetation planted on the island where dredged material is deposited. Terns, skimmers,
and shorebirds need bare sand and shell for nesting and any vegetation will hinder nesting efforts. On the
southern shoreline, however, NCWRC proposes to work with NC Coastal Federation to plant Spartina sp.
and possibly, cedar saplings, to reduce erosion and provide nesting habitat for egrets, herons, and
pelicans.
DOT Island is in an area of naturally accreted shoals (Figs. 1, 2, 3); thus, placement of dredged sand -shell
material on the shoals ESE of the island will increase the probability of material staying where placed
(Fig. 4). It is proposed that placement of material use the control -of -effluent method developed by the
Wilmington District Corps of Engineers and used for >10 years successfully (Golder et al. 2008). Small
temporary berms will be created with a bulldozer to protect the Spartina marsh. If deemed necessary, silt

RECEIVE
MAR 19 2018
fencing will be used to provide further protection to the Spartina marsh and a turbidity curtain will reduce
movement of any sediments in the water column (Fig. 5). New sand fr� gV0AR& would be
discharged in the center of the fill area in a manner to protect existing marshhabitats. The outflow pipe
will direct material into the footprint to be developed into a sandy dome. The dome will be created with
gentle slopes (30:1) toward the ESE shoreline. A bulldozer (Fig. 5) on site will be used to move the
outflow pipe as needed to direct the flow of material and create the dome. After dredged material is
deposited, the bulldozer will be used to grade the dome and ensure the slope toward the ESE shoreline is
30:1, and no slope is greater than 3:1 (Golder et al. 2008). The height of domes should be <15 ft (<5 m;
Landin 1986). Total size of the island should be <25 ac (510 ha). The larger an island, the greater the
probability of its colonization by mammals that prey on ground -nesting birds (Landin 1986).
The sandy intertidal area of DOT Island (mostly ENE side of island) is —11 ac (4 hac; 14-15 January
2014, measured at low tide; Schweitzer and Abraham, NCWRC, unpublished data; NCDOT, D. H.
Stallings, survey, 2016; Fig. 2). Shallow (18-48 in [45-122 cm ]) water over sandy shoals is ESE of the
intertidal area, and that area (approximately 20 ac; 8 ha) would be covered with dredged sandy material to
restore the size of the island to its size in the 1980s (25 ac [10 ha]). Therefore, total fill area would be
about 20 ac (8 ha) (Fig. 4).
Construction Schedule
Restoration of the island will depend on funding available to the Wilmington District Corps of Engineers,
N.C. DOT, and/or Dare County to maintain the Connector Channel and Hatteras -to -Hatteras Channel in
the Hatteras Inlet project area (Fig. 2). All dredge work will adhere to any moratoris within permit
conditions, with no material being placed on the established island during April 1 — August 31 of any year
to avoid impacts to nesting birds. Before dredged material is deposited, a silt fence will be installed to
protect wetland vegetation from harm (Fig. 6). During deposition of sand, as the island grows above mean
high tide, a bulldozer will be barged to the site and used to push sand and contour the material to create a
gentle slope for the island (Fig. 5). The bulldozer will also be used to create a temporary berm to retard
suspended silt so it will settle before water enters the Pamlico Sound (Fig. 6).
The area surrounding DOT Island is dynamic and shoals move frequently. However, on the western side
of DOT Island, there is a natural channel (Fig. 5; Hatteras -to -Hatteras Inlet Gorge) that leads to Hatteras
Inlet. This channel can be used to approach DOT Island from the South with a barge to transport
equipment to it and align the dredge pipeline. This approach will not cross SAV, shellfish, or other
sensitive areas. Due to the dynamic nature of the area, navigation to DOT Island will need to be mapped
and planned prior to work, and may differ from what is proposed here.
Justification and Benefits
Several species that nested on DOT Island through 1985 are Species of Greatest Conservation Need, N.C.
Special Concern Species, N.C. Endangered, and/or N.C. Threatened Species (Table 1; NCWRC 2015).
These species require early successional, unvegetated sandy areas for nesting. Much of the natural barrier
island beach habitat in North Carolina has been impacted by commercial and residential development,
increased populations of mammalian predators, and is used intensively for recreation. These species have
begun to use manmade habitats including islands constructed from dredged material. The loss of habitat
on DOT Island has removed previously -available nesting habitat. The North Carolina Colonial Waterbird
Management Plan (Parnell and Shields 1990) calls for maintenance of suitable nesting habitat for species
that have nested in the coastal region historically. Therefore, restoration of DOT Island will return nesting
habitat for Species of Greatest Conservation Need in North Carolina, increasing the probability of
increasing their nesting population size.

RECEIVE®
MAR 19 2018 4
The increase in coverage of DOT Island by Spartina marsh, small trees, andWWWA919esting on
the island by Forster's Terns (Table 1), Brown Pelicans (Table 2), Black -crowned Night Herons
(Nycticorax nycticorax), Great Egrets (Ardea alba), Little Blue Herons (Egretta caerulea), Snowy Egrets
(E. thula), Tri -colored Herons (E. tricolor), White Ibis (Eudocimus albus), and Glossy Ibis (Plegadis
falcinellus) (Table 3). The species dependent on small trees and shrubs are adversely affected by recent
erosion and loss of nesting substrate (Schweitzer, NCWRC, unpublished data). Restoration of DOT Island
and possible planting of cedars in the area where trees and shrubs have been lost will provide new nesting
sites for these species.
Thousands of Laughing Gulls nested on DOT Island through the 1980s, and more recently, Herring Gulls
(Larus argentatus) and Great Black -backed Gulls (L. marinus) nest here. The large -bodied gulls are
predators on many other avian species, including several Species of Greatest Conservation Need in North
Carolina. Increasing the area of early successional, sandy habitat on DOT Island will likely reduce the
number of nesting gulls.
In addition to habitat for nesting species, DOT Island provides valuable habitat for birds during fall and
spring migrations, and in winter. Brown Pelicans use the site for roosting, and shorebirds (e.g.,
Sanderlings [Calidris alba], Dunlin [C. alpina], Red Knots [C. canutus], Western Sandpipers [C. mauri]])
feed and rest on the island. Restoring the island will continue its value during migration and winter for
these and other species.
DOT Island has been posted against trespass for nesting waterbirds annually and has been included in the
Coastwide Colonial Waterbird Survey since the late 1970s. It will continue to be managed and surveyed
by NCWRC after restoration and the response of birds to the restoration will be monitored.
DOT Island is approximately 0:5 mi from the middle of Hatteras Inlet and the Hatteras Inlet Ferry
Channel, while the only other possible site on which to dispose dredged material (Cora June Island) is 2.8
mi from this location (Fig. 2). Because sands from the inlet frequently fill the Connector Channel and
Hatteras -to -Hatteras Channel, emergency side -cast dredging and diversion of the ferry route often are
necessary. Having DOT Island available as a deposition site will increase the possibility of dredging the
channel efficiently and less expensively than using Cora June Island, a greater distance away. Further,
Cora June Island received dredged sand from Rollinson and Hatteras Ferry Channels in fall and winter
2013, it will likely receive dredged sand in winter 2018 or 2019, and it has nearly reached its maximum
permitted area and height. Therefore, Cora June Island will not be available as a disposal site for much
material in the near future.
Placing dredged sandy material on DOT Island will not incur additional dredging activity or expenses, but
will be incorporated into ongoing plans to keep the Connector and Hatteras -to -Hatteras Channels
navigable. The regular maintenance of these channels will provide a continued source of sandy material
for DOT Island and will be used to maintain early -successional habitat for Species of Greatest
Conservation Need.
Although DOT Island is posted against trespass above mean high water from 1 April — 31 August to
protect nesting birds from disturbance, from 1 September — 30 March, the island is available to
recreationists. The island is used by duck hunters, boaters, bird watchers, and anglers, and thus, provides
many opportunities to the public for recreation. Restoring the size of the island will increase these
opportunities and ensure the island is not lost completely to erosion.
Overall, environmental impacts will be minimized and temporary while benefits from the restoration of
DOT Island will be numerous.

Literature Cited
Golder, W., D.H. Allen, S. Cameron, and T. Wilder. 2008. Dredged material as a tool for management of
tern and skimmer nesting habitat. ERDC TN -DOER -E24. Vicksburg, MS: U.S. Army Engineer
Waterway Experiment Station.
Landin, M.C. 1986. Building, developing, and managing dredged material islands for bird habitat. EEDP
Technical Notes Collection. EEDP-07-1. Vicksburg, MS: U.S. Army Engineer Waterway
Experiment Station.
[NCWRC] North Carolina Wildlife Resources Commission. 2015. North Carolina Wildlife Action Plan.
Raleigh, NC.
Parnell, J.F., and M.A. Shields. 1990. Management of North Carolina's Colonial Waterbirds. UNC Sea
Grant Publication Number UNC -SG -90-03.
Parnell, J.F., and R.F. Soots. 1979. Atlas of colonial waterbirds of North Carolina estuaries. North
Carolina Sea Grant Publication UNC -SG -78-10, Raleigh, North Carolina.
RECEIVED
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DCM-WARO

2.1
Table 1. Numbers of pairs of nesting terns and skimmers on DOT Island, North Carolina. Data are from
vears durina which full survevs of North Carolina's colonial -nesting waterbirds were conducted.
Gull -
Black Common billed Least Royal Sandwich Forster's
Year Skimmer 1,2 Tern',' Tern' 4 Tern 1,2 Terni Terni Tern'
1977 119
490
36
313
0
0
136
1983 40
84
7
0
2021
238
116
1985 75
80
6
0
0
0
5
1988 0
0
0
0
0
0
44
1989 0
0
0
0
0
0
58
1990 0
0
0
0
0
0
45
2001 0
0
0
0
0
0
33
2004 0
1
0
0
0
0
35
2007 0
0
0
0
0
0
0
2011 0
0
0
0
0
0
0
2014 0
0
0
0
0
0
0
2017 9
28
0
0
0
0
100
'Species of Greatest Conservation
Need (N.C. Wildlife Action Plan 2015)
2State status, Special Concern
'State status, Endangered
4State Status, Threatened
Table 2. Numbers of pairs of Brown Pelicans and gulls on
DOT Island, North Carolina. Data are from years during
which full surveys of North Carolina's colonial -nesting
waterbirds were conducted.
Year
Brown
Pelican'
Herring
Gull'
Great
Black -
backed
Gull'
Laughing
Gull
1977
0
0
0
5
1983
0
0
0
2685
1985
0
0
0
2700
1988
0
0
0
3518
1989
0
0
0
1369
1990
0
0
0
1369
2001
0
5
55
0
2004
357
31
3
0
2007
345
14
4
4
2011
926
4
39
0
2014
280
11
5
0
2017
0
7
1
66
'Species of Greatest Conservation Need (N.C. Wildlife Action Plan 2015)

Table 3. Numbers of pairs of wading birds and ibis on DOT Island, North Carolina. Data are from years during
which full survevs of North Carolina's colonial-nestins waterbirds were conducted.
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MAR 19 2018
DCM-WARO
Black-
lackcrowned
crowned
Little
Tri -
Night
Cattle
Great
Blue
Snowy
colored
White
Glossy
Year
Heron'.
Egret,
Egret
Heron'•2.
Egret 1.2
Heron 1,2
Ibis'
This 1,2
1977
0
0
0
0
0
0
0
0
1983
0
0
0
0
0
0
0
0-
1995
.0
0
0
0
0
0
0
0
1988
0
0
0
0
0
0
0
0
1989
0
0
0
0
12
0
0
0
1990
0
0
0
0
0
0
0
0
2001
14
0
90
109
11
24
137
33
2004
36
0
123
70
39
32
74
19
2.007
8
0
10
4
1
1
'64
4
2011
8
16
69
0
0
0
12
0
2014
0
0
53
0
0
0
0
0
2017
0
0
8
0
0
0
0
0
'Species of Greatest Conservation Need (N.C. Wildlife Action Plan 2015)
2State status,
Special Concern
RECEIVED
MAR 19 2018
DCM-WARO

ti
W
h
O
A
Prexred In ir< Gfflce cf:
PROJECT INFORMATION: DIVISION OF HIGHWAYS
113 Airp— Dr, Ed-- NC 27932
EXISTING ISLAND: 5 ACRES
PROPOSED FILL AREA: 20 ACRES S. H. SCHWEITZER, Ph. D.
PNO3F:CT Ei'(iA'FIF
TOTAL PROPOSED AREA: 25 ACRES
D.H. STALLINGS
DFSIGV E%Gl+i Sl4.\'.111R ..
Figure 1. Location of DOT Island/ project area, Hatteras Inlet, Hatteras Island, and Ocracoke Island within the barrier islands of the
Outer Banks, North Carolina.
RECEIVED
MAR 19 2018
DCM-WARO

Q
Figure 2. Historical shorelines of Hatteras and Ocracoke Islands (2002-2012) at Hatteras Inlet. DOT and Cora June Islands were created from material
dredged from navigation channels in the inlet management area, includinu the Connector Channel and I-Iatteras-to-Ilattcras Inlet Channel. Original
figure from NCDOT (2016).
RECEIVED
MAR 19 2018
DCM-WARD

D
APPLICANT: I NC WILDLIFE RESOURCES CON SSION
PROIfCT ENGINEER: S.H. SCHWER2E0., Ph.D.
DRAWN BY: I D.N. STALLINGS - NCDOT DMSION OF HIGHWAYS
DRAWING DATE: 26 IANUARY 2018
-i-- - REVIFNED BY:
B SIL 7FEN4CEDET4&
NOTES
USE WIRE A MINIMUM OF 32" IN WIDTH AND WITH A MINIMUM OF 6 LINE WIRES WITH 12" STAY
SPACING.
USE FILTER FABRIC A MINIMUM OF 36" IN WIDTH AND FASTEN ADEQUATELY TO THE WIRE AS
DIRECTED BY THE ENGINEER.
PROVIDE 5'-0" STEEL POST OF THE SELF -FASTENER ANGLE STEEL TYPE.
CONTRACTOR SHALL UTILIZE SILT FENCE TO ENSURE NO EFFLUENT IS DEPOSITED INTO
EXISTING MARSH AREA OF D.O.T. ISLAND DURING THE REPLENISHMENT PROJECT.
SILT FENCE LOCATION MAY VARY SLIGHTLY FROM DISCHARGE PLAN DUE TO CHANGING
FIELD CONDITIONS.
TOP AND BOTTOM STRAND -
SHALL BE 10 GAUGE MIN.
WIRE -
FILTER FABRIC --_-
COMPACTED FILL--\
L-'
STEEL POST - 2'-0" DEPTH
EXTENSION OF FABRIC AND
WIRE INTO TRENCH
6' MAX. WITH WIRE
(6' MAX, WITHOUT WIRE)
i
MIDDLE AND VERTICAL WIRES
SHALL BE 1212 GAUGE MIN.
I
FILTER FABRIC
Figure 6. Details of silt fence to be installed to protect existing marsh from placement of dredged material in project footprint.
RECEIVED
LIAR 19 2018
DCM_WARO

APPLICANT:
NC WILDUFE RESOURCES COM6USSION
DRAWN 0Y: D.H.
STAUINGS - NCDOT DMSION OF HIGHWAYS
OAAWING DATE:
26 JANUARY 2010 (REV 3-9-181
SURVEY DATES.
HYDROGRAPHIC: 19 JULY 2016
TOPOGRAPHIC: 03 AUGUST 2016
NOTES
PROTECT ENGINEER: 5 M. SCHWEITZER, Ph.O,
REVIEWED 8Y.
D/SCH,9RGERZAN
PAMLICO SOUND
1. ALL DREDGED MATERIAL SHALL BE PLACED BY CONTROL OF EFFLUENT, DIRECTING
THE FLOW AWAY FROM THE CHANNEL DIRECTLY TO THE WEST AND AWAY FROM
THE EXISTING MARSH AREA.
2. THE CONTRACTOR SHALL NOT ATANY TIME PLACE MATERIAL OR ALLOW ANY EQUIPMENT
TO CROSS OR ENCROACH INTO THE MARSH AREA.
3. THE CONTRACTOR MAY USE MULTIPLE DISCHARGE POINTS TO ENHANCE MOUNDING OF DREDGED
MATERIAL IN THE FILL AREA. THE CONTRACTOR SHALL SUBMIT A DISPOSAL PLAN FOR THE
CONTRACTING OFFICER'S APPROVAL.
4. THE APPROXIMATE AREA OF THE EXISTING ISLAND AT 0' MHW (4' MLLW) IS 5 ACRES. THE FOOTPRINT
OF LIMITS OF CONSTRUCTION SHALL NOT EXCEED 25 ACRES ABOVE O' MHW FOLLOWING COMPLETION
OF DISPOSAL OPERATIONS.
5. THE ESTIMATED FILL CAPACITY WITHIN THE LIMITS OF THE FILL AREA IS 569,454 CU. YDS. THE INTENT OF
THIS PROJECT IS TO PLACE A SUFFICIENT AMOUNT OF DREDGED MATERIAL ON D.O.T. ISLAND TO PROVIDE
THE MAXIMUM FILL HEIGHT AND FOOTPRINT ALLOWED.
G. DISCHARGE PLAN MAY VARY SLIGHTLY ACCORDING TO CONTRACTOR PREFERENCES AND CAPABILITIES.
DISCHARGE PLAN SHALL BE APPROVED BY THE APPROPRIATE AGENCIES BEFORE WORK MAY BEGIN.
DISCHARCE PIPE
pyxFILL MATERIAL
CROSS SECTION VIEW
�;��gTING lS�'gND'
(NO DISCHARGE)
END VIEW
F.�
1RSCRAAOE WE
FLOW OF MATERIAL
a -
f0
2 7 "N
TTI
EXISTING ISLAND AREA: 5.0 ACRES
PROPOSED FILL AREA: 20.0 ACRES
TOTAL PROPOSED AREA: 25.0 ACRES
PERIMETER
OF MARSH
13,
APPROXIMATE 4' MLLW
FINISHED GRADE LINE
200' 100' 0 100 200 300
Figure 5. Proposed plan for discharge of dredged material within original footprint of DOT Island. Cross sections show the discharge
pipe placing dredged material into fill area. Material will build a dome area that can later be approached by a barge to unload
equipment to manipulate the island. Approach to the project area will be done to avoid sensitive habitats and according to wind and
tide conditions. Turbidity curtains would be used as necessary to contain the material within the project area.
RECEIVED
MAR 19 2018
DCM-WARO
4!�
4j 9q
A,
-�r
1RSCRAAOE WE
FLOW OF MATERIAL
a -
f0
2 7 "N
TTI
EXISTING ISLAND AREA: 5.0 ACRES
PROPOSED FILL AREA: 20.0 ACRES
TOTAL PROPOSED AREA: 25.0 ACRES
PERIMETER
OF MARSH
13,
APPROXIMATE 4' MLLW
FINISHED GRADE LINE
200' 100' 0 100 200 300
Figure 5. Proposed plan for discharge of dredged material within original footprint of DOT Island. Cross sections show the discharge
pipe placing dredged material into fill area. Material will build a dome area that can later be approached by a barge to unload
equipment to manipulate the island. Approach to the project area will be done to avoid sensitive habitats and according to wind and
tide conditions. Turbidity curtains would be used as necessary to contain the material within the project area.
RECEIVED
MAR 19 2018
DCM-WARO

A F G N I I I J
IlPUCAM: NC WILDLIFE RESOURCES COMMISSION
PROTECT ENGINEER: S.H. SCHWEITZER, M.D. / - r PROTECT REFERENCE SHEET NO,
DRAWN BY: O.H. STAWNGS - NCDOT DM ION OF HIGHWAYS -
DRAWING DATE: 28 NOVEMBER 2017 TRW i-25-181 -, �• i' � tf � (.r�,,' - DOT ISLAND REPLENISHMENT 3
SURVEY DATES: HYDROGRAPHIC 19 JULY 2016
TOPOGRAPHIC: 03 AUGUST 2016 CHANNEL PRISM LINE -
e PERIMETER
G• V , �; '� OF MARSH
ONSM O O FI
T/ NPLAN
PAMLICO SOUND
TEMPORARY
PAMLICO SOUND d Q x SILT FENCE
�� C2 `. f (AS NECESSARY)
10.x roAl \ vm,Hr R[R gra.-- _10
�Q'
w 6 q' - 6 \ Q •�Fc T
2 4 - Inrv.rax slR mnrv4: - i 4 /`�_.) I t A• ```_
r T
Z F
a - -- - S4L-, CRY i
6 w
IT i 1 p f �I iI. j i O") 4 4eZ% I — APPROXIMATE 19' MLLW B
w _2 J. _ _ _ _ .- 3 ''' Jt�..., / Y /. • t ` FINISHED GRADE LINE
0+00 0+20 0+40 0+60 0+80 1+00 ` .% �„ •,� ^S
TEMPORARY BERM DETAIL , 4 ''• ' ` ` ^ I \� • FINISHED ATE 4'GRADLINE
EXISTING ISLAND AREA: ACRES , J \
PROPOSED FILL AREA: 20.0 ACRES
TOTAL PROPOSED AREA: 25.0 ACRES ;� i vy ; _ o
NOTES: .,L• 9'�. '\.
JCD
1 ALL DREDGED MATERIAL SHALL BE PLACED BY CONTROL OF EFFLUENT, DIRECTING '1. t.. `� ��
THE FLOW AWAY FROM THE CHANNEL DIRECTLY TO THE WEST AND AWAY FROM\` 'y ' /> a ,1 tr
THE EXISTING MARSH AREA. 1 O !I
2. MAXIMUM ELEVATION OF DISPOSAL AREA SHALL NOT EXCEED +19,0' MLLW. \ Y I ` Q f '� I r 1 O i
jti 1 ! 1 a
7. WHERE THE EXISTING SLOPE ABOVE o' MHW IS STEEPER THAN tOH:1 V, CONTRACTOR SMALL
GRADE EXISTING SLOPE AND PLACE FILL TO FLATTEN THE SLOPE TO 10HA V.
4. DATE OF TOPOGRAPHIC SURVEY: 7 AUGUST 2016 PROPOSED
DATE OF HYDROGRAPHIC SURVEY: 19 JULY 2016 +� .1 II r 1 Z1- i 214 •�\ \` S r FILL
5. HORIZONTAL DATUM: NAD 1993 t+1, 1 ,f 1 %, e O �' \ i 20! Ac 1
S. VERTICAL DATUM FOR CONTOURS SHOWN: MEAN LOW LOW WATER(MLLW). 4LR -=y } �f.•. , 1 A\ ,•� ../� 1 - ��'� I \\ 1,, 1
7. THE CONTRACTOR SHALL NOT AT ANY TIME PLACE MATERIAL OR ALLOW ANY EQUIPMENT -� r
TO CROSS OR ENCROACH INTO THE MARSH AREA. 'f`�' S�rg6 -=s ti - j ♦" \- : / 1
2 8, ALL COSTS FOR WORK AT D.O.T. ISLAND SHALL BE CONSIDERED INCIDENTAL TO AND INCLUDED 1 ,,y 1 1 + �1 « r ' - - - 4'
IN THE COST FOR DREDGING. �T •�
9. THE CONTRACTOR MAY USE MULTIPLE DISCHARGE POINTS TO ENHANCE MOUNDING OF DREDGED 1`
MATERIAL IN THE FILL AREA. THE CONTRACTOR SHALL SUBMIT A DISPOSAL PLAN FOR THE 1} `
CONTRACTING OFFICER'S APPROVAL. a i y 'y„� \ M. 1 I I /• \ '
�111�.
10. THE APPROXIMATE AREA OF THE EXISTING ISLAND AT 0' MHW (4' MLLW) IS 5 ACRES. THE FOOTPRINT << \ p . ' \ \ • r � '
OF LIMITS OF CONSTRUCTION SHALL NOT EXCEED 25 ACRES ABOVE 0' MHW FOLLOWING COMPLETION kt•+' tti, \ rQ ,' J 1 ` - 19' -
OF DISPOSAL OPERATIONS. \ { - 1 . { * J t
11. THE ESTIMATED FILL CAPACITY WITHIN THE LIMITS OF THE FILL AREA IS 569,454 CU. YDS. THE INTENT OF
THIS PROJECT IS TO PLACE A SUFFICIENT AMOUNT OF DREDGED MATERIAL ON D.O.T. ISLAND TO PROVIDE t,j ,
THE MAXIMUM FILL HEIGHT AND FOOTPRINT ALLOWED.
12. CROSS SECTIONS A -A AND B -B SHOW MAXIMUM ALLOWABLE DIMENSIONS AND SIDE SLOPES,
MPORARYB
2. SCALE: 1” 100' 1 `•. i i 1 SE
t . • �t\' } I , /r' --DETAIL RM
200' 100' 0 100 200 300 2
25— morocco _ _ _ _ _ _ _ _ _ P ccT.
__ ___ ___ T25 35 ___ __ ____ `A^F"�TRuw
c�.cv.TwH 1. a n.uw
20= - - 10 - - L _. .. 10 - ZO 20 PR m LLL- 20
\
� • 10 •I LrvAnl 1
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CROSS SECTION A -A 0� CROSS SECTION B -B
Figure 4. Proposed placement of dredged material within original footprint of DOT Island. Cross sections show proposed slopes and
temporary berms. Material will be discharged from the discharge pipe into the center of the 20 -acre fill area, in a manner to protect
existing marsh habitats. Turbidity curtains and berms would be used, if needeed, to contain material within the project area. A
temporary silt fence will be installed to provide further protection to marsh vegitation.
RECEIVED
MAR 19 2018
DCM-WARO

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