20120868 Ver 3_CAMA Application_20161209

Coastal Management
ENVIRONMENTAL QUALITY
December 6, 2016
TO:
2 0 1 6 1 2 1 4
Karen Higgins
401 & Buffer Permitting Unit
DWR/Water Quality Permitting
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secretary
BRAXTON DAVIS
Director
I&A)k 12e e ICS__,
/a I g/i(,o
FROM: Heather Coats, Assistant Major Permits Coordinator
NCDEQ - Division of Coastal Management
127 Cardinal Drive Ext., Wilm., NC 28405 heather. coats(aD-ncdenr.gov
Fax: [phone] (Courier 04-16-33)
SUBJECT: CAMA / Dredge & Fill Application Review
Applicant: MM50-16: New Hanover County, c/o CPE -NC
Project Location: Unincorporated New Hanover County, within Carolina Beach Inlet
Proposed Project: to allow for disposal of dredge material into the existing Coastal Storm Damage
Reduction (CSDR) borrow site, for future beneficial re -use within CB Inlet
Please indicate below your agency's position or viewpoint on the proposed project and
return this form to Heather Coats at the address above by December 29, 2016. If you have
any questions regarding the proposed project, contact Sean Farrell at [phone] when
appropriate in-depth comments with supporting data is requested.
REPLY: This agency has no objection to the project as proposed.
"*Additional comments may be attached"*
This agency has no comment on the proposed project.
This agency approves of the project only if the recommended changes
are incorporated. See attached.
This agency objects to the project for reasons described in the attached
comments.
SIGNED DATED
State of North Carolina I Environmental Quality I Coastal Management
127 Cardinal Drive Ext., Wilmington, NC 28405
910-796-7215

DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
Major Modification SDI -5 Carolina Beach Inlet
APPLICANT'S NAME: New Hanover County c/o CPE -NC
2. LOCATION OF PROJECT SITE: The project site is the existing CSDR borrow site within Carolina
Beach Inlet
Photo Index:
AIWW Crossing -2006: 21-7380:4-24, R -S CB Inlet - 2006: 21-7380:12-13, Q -X
Coordinates:
Lat: 340 07'89.10" N Long: 770 87'80.32"W
3. INVESTIGATION TYPE: CAMA / D&F
4. INVESTIGATIVE PROCEDURE: Dates of Multi Agency Meetings: 07/06/2016 (w/ applicant)
5. PROCESSING PROCEDURE: Application Received Complete - November 16, 2016
Office - Wilmington
6. SITE DESCRIPTION:
(A) Local Land Use Plan - Town of Carolina Beach
Classification From LUP- General Project Area is classified as Conservation
(B) AEC(s) Involved: EW, PT, IH
(C) Water Dependent: Yes
(D) Intended Use: Public
(E) Wastewater Treatment: Existing - N/A
Planned - None
(F) Type of Structures: Existing - N/A
Planned - N/A
(G) Estimated Annual Rate of Erosion - N/A
Source - N/A
7. HABITAT DESCRIPTION: [AREA]
DREDGED FILLED
(A) Intertidal/Subtidal (Open Water)
Carolina Beach Inlet
25 acres
(B) Oceanfront Beach
(D) Total Area Disturbed: (- 25 acres)
** Note: Typical CSDR borrow site volumes are listed on the MP -2 Form.
(E) Primary Nursery Area: No
(F) Water Classification: SB Open: Yes
8. PROJECT SUMMARY: New Hanover County proposes to modify State Permit #50-16 which currently
authorizes maintenance dredging in Carolina Beach Inlet and the AIWW crossing in order to obtain
authorization to dispose of material below Mean High Water (MHW) into the existing Coastal Storm Damage
Reduction (CSDR) borrow site, for future beneficial re -use.

r
New Hanover County- SDI -5 Major Modification (Carolina Beach Inlet) 12/05/2016
Page Two
9. PROJECT DESCRIPTION:
The project site is the Carolina Beach Inlet between the north end of Carolina Beach and the south end of
Masonboro Island. To locate the northern limits of the project site from the Wilmington Regional Office (WiRO),
travel from Wilmington to Carolina Beach south on College Road (NC 132 to Hwy 421) for approximately 12
miles south. Continue over Snows Cut Bridge for approximately 1.3 miles south until you reach Carl Winner
Drive. Turn left onto Carl Winner Drive, and then left on Canal Drive. Travel approximately 1.6 miles north until
Canal Drive terminates at the entrance of Freeman Park. Carolina Beach is a barrier island located in New
Hanover County and is flanked by Myrtle Grove Sound/Atlantic Intracoastal Waterway (AIWW) to the west and
the Atlantic Ocean to the east.
The U.S. Army Corps of Engineers (USAGE) has maintained Carolina Beach Inlet as a marked navigation
channel, providing commercial and recreational access to the Atlantic Ocean; however, periodic maintenance
has become less frequent due to budget constraints, the shallow depth of the inlet and the amount of material
that's held in the inlet system by the side -cast operations. The application states that the proposed
modifications would decrease the amount of travel time for the hopper dredge and make more effective use of
the USACE dredge fleet's limited availability. According to the application, the USACE created the 25 -acre
engineered borrow site within the throat of Carolina Beach Inlet in 1970. According to permit history, a Final
Environmental Impact Statement (FEIS) was issued for the project in July 1981, which authorized the
placement of beach compatible material from the Carolina Beach Inlet onto the Carolina Beach oceanfront, as
part of the federal Coastal Storm Damage Reduction (CSDR) project.
CAMA State Permit No. 138-12 was issued to New Hanover County on December 21, 2012 to continue beach
nourishment along the oceanfront shoreline of the Town of Carolina Beach as specified under the CSDR
Project, as authorized by Congress in 1962, this permit is due to expire in December of 2018. According to the
application, approximately 250,000 cubic yards/year passively accumulate within the Carolina Beach Inlet.
Historically, the volume of material placed on Carolina Beach oceanfront since 1985 has averaged 858,600
cubic yards (cy) during each periodic nourishment operation, spread over 14,000 LF with a fill density of
approximately 61.3 cubic yards/ft. The application states that the engineered borrow area's accumulated sand
is expected to be utilized for beach nourishment on a 3 -year cycle. The northern limits of the CSDR project are
approximately 720 ft. north of the existing rock revetment and the Carolina Beach Fishing Pier and the
southern limits of the project are located just north of Tennessee Avenue.
In recent years, the USACE has been able to maintain the AIWW crossing and Carolina Beach Inlet with their
side -cast dredge plant Merritt. Dredging of the inlet has also utilized the USACE's hopper dredge plants,
Murden and Currituck. This method involves nearshore disposal approximately 2 miles south from the Carolina
Beach Inlet at a site adjacent to the oceanfront in Freeman Park. Lastly, the USACE has utilized a hydraulic
pipeline dredge with beneficial re -use of material along the oceanfront in Freeman Park. Traditionally, the
USACE has maintained a depth of -12 ft. plus -2 ft. overcut in the AIWW Crossing and -8 ft. plus -2 ft. overcut
in Carolina Beach Inlet at MLW. The application states that the USACE has maintained a 3,900 linear foot
portion of the AIWW crossing in proximity to the inlet. The application also states that the majority of dredging
within Carolina Beach Inlet has occurred within the outer bar channel.
On May 5,2016 CAMA State Permit #50-16 was issued to New Hanover County for maintenance dredging and
beneficial placement for Carolina Beach Inlet as one of the 5 (five) federally authorized shallow draft inlets
(SDI -5) and associated AIWW Crossings. Maintenance dredging under the SDI -5 mimics the USACE
maintenance dredging program which includes the AIWW crossings, connecting channels and the inlet throat
throughout currently authorized inlet linear distance beyond the COLREGS line.
The application includes a Supplemental Biological Assessment (Appendix C) and Essential Fish Habitat
Assessment (Appendix D). The applicant states that impacts to cultural resources in the Carolina Beach Inlet
Project Area are not anticipated.

New Hanover County- SDI -5 Major Modification (Carolina Beach Inlet) 12/05/2016
Page three
The Town of Carolina Beach's Land Use Plan does not have the dry sand beach classified; however, the
upland areas of this project are classified as Conservation. The waters of the project site are classified as SB
by the NC Division of Water Resources. The NC Division of Marine Fisheries has NOT designated this area of
the Atlantic Ocean as a Primary Nursery Area (PNA), and the waters are OPEN to the harvesting of shellfish.
10. PROPOSED PROJECT:
New Hanover County proposes to modify State Permit #50-16 which currently authorizes maintenance
dredging in Carolina Beach Inlet and the AIWW crossing in order to obtain authorization to dispose of material
below Mean High Water (MHW) into the existing Coastal Storm Damage Reduction (CSDR) borrow site, for
future beneficial re -use.
As proposed, material would not be placed above -14 at MLW ft. in order that the proposed material storage
would not alter the navigability or geomorphology of the inlet. The storage area would follow the existing
CSDR borrow source template, which measures approximately 2,500 ft. in length and ranges from
approximately 175-600 ft. in width (see Sheet 2 of 6 and MP -2 Excavation and Fill Form on Page 5). The
existing depth of the CSDR borrow site and proposed storage area ranges from approximately +2 ft. to -40 ft.
NAVD88 (see Sheet 6 of 6 and MP -2 Excavation and Fill Form on Page 5). The authorized operational
depth of the borrow site is approximately -40' NAVD88. The application states that the analysis of pre -
construction surveys from 2010 for the CSDR borrow site showed a capacity for approximately 76,400 cubic
yards of material to be placed between the bottom and -14' at MLW. A similar 2013 survey showed a capacity
for approximately 60,000 cubic yards.
The proposed material disposal methods are proposed to be accomplished by using a modified hydraulic
pipeline outfitted with a Tremie pipe to pump beach compatible material into the CSDR borrow area. The
application states that "mounding" of the sediment would be avoided by maneuvering of the Tremie Pipe.
Sediment characterization data were obtained for Carolina Beach Inlet and the AIWW Crossing from sampling
events between 2006 and 2014. The attached Biological Assessment (Appendix C) states that samples
collected contained beach compatible material throughout the project area. Two additional samples were taken
in October of 2014 within the AIWW crossing area and Carolina Beach Inlet. These studies can be found in the
Sediment Evaluation Study included with the original SDI -5 permit application.
The applicant states that the proposed disposal method would reduce the need to mobilized and demobilize
the pipeline extending from the AIWW inlet crossing into Freeman Park as well as reduce the travel time
associated with the hopper dredge and the currently authorized nearshore disposal site. The application
claims that these reductions would result in net benefits to water quality, flora, and fauna.
According to the applicant, the proposed disposal method is consistent with federal projects thereby not
exceeding the authorized depth and width of the federal channel. As proposed, the entire project would remain
in the footprint currently authorized CSDR borrow site template. All other associated dredging and spoil
disposal activities are proposed to be carried out as currently authorized under the SDI -5.
11. ANTICIPATED IMPACTS
The proposed modification to allow disposal of beach compatible material into the CSDR borrow site would
disturb approximately 25 acres of shallow bottom habitat. Placement of material below the MHW boundary
would result in temporary turbidity within Carolina Beach Inlet; potentially affecting fish and aquatic life in the
project area at the time. Limiting the work to the winter season should reduce potential adverse impacts to fish
communities.
Submitted by: Sean Farrell Date: December 5, 2016 Office: Wilmington

FORMS ..i �3 p -w
D E
PLICATION for
Nalor lovelopme Forma
(last revised 12/27/06) North Carolina DIVISION OF COASTAL MANAGEMENT
I. Primary Applicant/ Landowner Information
Business Name
Project Name (if applicable)
New Hanover County (NHC)
New Hanover County Inshore Dredge Material
Management
Agent/ Contractor 1: First Name
Site (IDMMS), Carolina Beach Inlet
./
Applicant 1: First Name
MI
Last Name
Finch
Chris
Agent/ Contractor 2: First Name
Coudriet
Last Name
Applicant 2: First Name
MI
Last Name
Rosov
Timothy
C
Burgess
PO Box
If additional applicants, please attach an additional pages) with names listed.
State
Mailing Address
PO BoxEvcvtl
State
230 Government Center Drive, Suite 195 1
:
ington
NC
ZIP
Country
Phone No.
FAX No.
28403
USA
910 - 798 -
7104 ext.
910 - 798 - 7051
Street Address (if different from above)
City
State
ZIP
Email
[e-mail], [e-mail]
[e-mail] NHC project contact H. Layton Bedsole Jr., REM
2. Agent/Contractor Information
Business Name
Coastal Planning & Engineering of North Carolina,
Inc. (CPE -NC)
Agent/ Contractor 1: First Name
MI
Last Name
Greg
Finch
Agent/ Contractor 2: First Name
MI
Last Name
Brad
Rosov
Mailing Address
PO Box
City
State
4038 Masonboro Loop Road
Wilmington
NC
ZIP
Phone No. 1
Phone No. 2 RECEIVED
28409
910 - 791 - 9494 ext.
- - ext. [)CM WILMINGTON
FAX No.
Contractor #
NA
Federal ID # 020623951
Email
[e-mail], [e-mail]
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
NC

3. Project Location
a. Total length of shoreline on the tract (ft.)
County (can be multiple)
p)
Street Address
1,199,229 (CSDR BorrowArea/IDMMS)
State Rd. #
New Hanover
Unincorporated New Hanover County within Carolina Beach
NA
(if many lot sizes, please attach additional page with a list)
Inlet
e. Vegetation on tract
None
Subdivision Name
City
g. Identify and describe the existing land uses adiacent to the proposed project site.
State
Zip
NA
NA
(Attach zoning compliance certificate, if applicable)
NC
28403
Phone No.
Lot No. (s) (if many, attach additional page with list)
NA
NA
a. In which NC river basin is the project located?
b. Name of body of water nearest to proposed project
Cape Fear
Atlantic Ocean
c. Is the water body identified in (b) above, natural or manmade?
d. Name the closest major water body to the proposed project site.
❑Natural ®Manmade ❑Unknown
Atlantic Ocean
e. Is proposed work within city limits or planning jurisdiction?
f. If applicable, list the planning jurisdiction or city limit the proposed
❑Yes ®No
work falls within.
NA
4. Site Description
a. Total length of shoreline on the tract (ft.)
b. Size of entire tract (sci t.)
None
1,199,229 (CSDR BorrowArea/IDMMS)
c. Size of individual lot(s)
d. Approximate elevation of tract above NHW (normal high water) or
NA
NAIL (normal waterlevel)
(if many lot sizes, please attach additional page with a list)
—+2' to -40' MSL ❑NHW or ❑NWL
e. Vegetation on tract
None
f. Man-made features and uses now on tract
Engineered sediment trap that functions as a borrow source for the Carolina Beach CSDR project.
g. Identify and describe the existing land uses adiacent to the proposed project site.
Undeveloped Freeman Park (south) and Estuarine Reserve (north) of proposed IDMMS.
h. How does local government zone the tract?
i. Is the proposed project consistent with the applicable zoning?
NA
(Attach zoning compliance certificate, if applicable)
❑Yes []No ®NA
j. Is the proposed activity part of an urban waterfront redevelopment proposal? ❑Yes ®No
k. Has a professional archaeological assessment been done for the tract? If yes, attach a copy. []Yes ❑No ®NA
If yes, by whom?
I. Is the proposed project located in a National Registered Historic District or does it involve a ❑Yes ®No ❑NA
National Register listed or eligible property?
m. (i) Are there wetlands on the site? ❑Yes ®No
(ii) Are there coastal wetlands on the site? []Yes ®No
(iii) If yes to either (i) or (ii) above, has a delineation been conducted? []Yes ®No
RECEIVED
(Attach documentation, if available)OCM MlbLGMq
n. Describe existing wastewater treatment facilities.
NA u U ;.,,,
o. Describe existing drinking water supply source.
NA
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
,NC

p. Describe existing storm water management or treatment systems.
NA
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 purpose of the project is to allow additional sediment management practices improving the efficiency associated with the
navigation maintenance dredging of the AIWW crossing and Carolina Beach Inlet. Supplemental sediment management
capabilities will result in cost savings and dredging efficiency that will potentially improve navigation access..
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.
Dredged material will be managed within the existing engineered borrow site within Carolina Beach Inlet via a split hull dredge
or by a cutterhead hydraulic dredge outfitted with a tremie pipe. Equipment storage will not typically be a concern as the work is
carried out by self-contained floating dredge plants and no land based activities are proposed.
d. List all development activities you propose.
Placement of beach compatible material from the AIWW and Carolina Beach Inlet maintenance dredging events into the currently
authorized engineered borrow area as designated within the Carolina Beach Inlet throat.
e. Are the proposed activities maintenance of an existing project, new work, or both? Maintenance
f. What is the approximate total disturbed land area resulting from the proposed project? 0.0 []Sq. Ft or ®Acres
g. Will the proposed project encroach on any public easement, public access way or other area ®Yes []No [INA
that the public has established use of? As proposed and currently during maintenance dredging
events, navigational access from Myrtle Grove to the Atlantic Ocean may require vessel
maneuvering.
h. Describe location and type of existing and proposed discharges to waters of the state.
Placement of beach compatible material from the AIWW and Carolina Beach Inlet maintenance dredging events into the currently
authorized engineered borrow area located within the Carolina Beach Inlet throat.
I. Will wastewater or stormwater be discharged into a wetland? ❑Yes ®No ❑NA
If yes, will this discharged water be of the same salinity as the receiving water? ❑Yes ❑No ®NA
J. Is there any mitigation proposed? []Yes ®No [INA
If yes, attach a mitigation proposal.
6. Additional Information
In addition to this completed application form, (MP -1) the following items below, if applicable, must be submitted in order for the application
package to be complete. Items (a) — (f) are always applicable to any major development application. Please consult the application 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. RECEIV D
UUM TON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.

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 See attachments (Section 2.1.5 and Appendix A) 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.
NCDCM Major Permit #50-16, issued on 5/5/16 and Department
of Army Action ID No. SAW -2014-02006, General Regional
Permit #198000291 issued on 5/23/16
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. I I 3 1-10), 9 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
1 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 certify that the information provided in this application is truthful to the best of my knowledge.
Date // g �0 6 Print Name
Signature
Please indicate application attachments pertaining to your proposed project.
®DCM MP -2 Excavation and Fill Information ❑DCM MP -5 Bridges and Culverts
❑DCM MP -3 Upland Development
❑DCM MP4 Structures Information
c 'ir4 s f �� �e,-.s 6,
RECEIVED
DCM WILMINGTON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
4

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.
LAVATION El 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. Historical available average of 20,000 to 25,000 cubic Beach quality sand
yards per year actively managed within the OMMS.
C. (i) Does the area to be excavated include coastal wetlands/marsh
(CW), submerged aquatic vegetation (SAV), shell bottom (SB), or
other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
OCW ❑SAV OSB
OWL ®None
(ii) Describe the purpose of the excavation in these areas:
N/A
d. High -ground excavation in cubic yards.
None
pISPOSAL OF EXCAVATED MATERIAL
a. Location of disposal area. b•
Authorized CSDR borrow area within the Carolina Beach
Inlet throat
C. (i) Do you claim title to disposal area?
[]Yes ONo ®NA
(ii) If no, attach a letter granting permission from the owner.
e. (i) Does the disposal area include any coastal wetlands/marsh
(CW), submerged aquatic vegetation (SAV), shell bottom (SB), or
other wetlands (WL)? if any boxes are checked, provide the
number of square feet affected.,
OCW ❑SAV OSB
OWL ®None
(it) Describe the purpose of disposal in these areas: N/A
OThis section not applicable
Dimensions of disposal area.
Irregular, approximately 2,500' x 300' (25 acres)
d. (i) Will a disposal area be available for future
maintenance?
®Yes ONo [INA
(ii) If yes, where?
Same location
f. (i) Does the disposal include any area in the water?
®Yes []No [INA
(ii) If yes, how much water area is affected?
25 acres.
COASTAL PLANNING .& ENGINEERING OF NORTH CAROLINA, INC.
5
RECEIVED
[)CM WILMINGTON, NO
P ').; r'
i1' _ ;o
Access Channel
Canal
Boat
Boat
Rock
Rock
Other (excluding
shoreline
(NLW or NWL)
Basin
Ramp
Groin
Breakwater
stabilization)
Length
2,500' Borrow Area
—175'-600' Borrow
Width
Area
Avg. Existing
NA
NA
— +2 to 40' NAVD88
Depth
Borrow Area
Active management
Final Protect
NA
NA
not to exceed (above)
Depth
-14' MLW
LAVATION El 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. Historical available average of 20,000 to 25,000 cubic Beach quality sand
yards per year actively managed within the OMMS.
C. (i) Does the area to be excavated include coastal wetlands/marsh
(CW), submerged aquatic vegetation (SAV), shell bottom (SB), or
other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
OCW ❑SAV OSB
OWL ®None
(ii) Describe the purpose of the excavation in these areas:
N/A
d. High -ground excavation in cubic yards.
None
pISPOSAL OF EXCAVATED MATERIAL
a. Location of disposal area. b•
Authorized CSDR borrow area within the Carolina Beach
Inlet throat
C. (i) Do you claim title to disposal area?
[]Yes ONo ®NA
(ii) If no, attach a letter granting permission from the owner.
e. (i) Does the disposal area include any coastal wetlands/marsh
(CW), submerged aquatic vegetation (SAV), shell bottom (SB), or
other wetlands (WL)? if any boxes are checked, provide the
number of square feet affected.,
OCW ❑SAV OSB
OWL ®None
(it) Describe the purpose of disposal in these areas: N/A
OThis section not applicable
Dimensions of disposal area.
Irregular, approximately 2,500' x 300' (25 acres)
d. (i) Will a disposal area be available for future
maintenance?
®Yes ONo [INA
(ii) If yes, where?
Same location
f. (i) Does the disposal include any area in the water?
®Yes []No [INA
(ii) If yes, how much water area is affected?
25 acres.
COASTAL PLANNING .& ENGINEERING OF NORTH CAROLINA, INC.
5
RECEIVED
[)CM WILMINGTON, NO
P ').; r'
i1' _ ;o

iHORELINE STABILIZATION ®This section not
applicable
(If development is a wood groin, use MP -4 — Structures)
1. Tvoe of shoreline stabilization- n i ohm+a•
❑Bulkhead ❑Riprap ❑Breakwater/Sill []Other:
Width:
c. Average distance waterward of NHW or NWL: d. Maximum 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.
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.
)THER FILL ACTIVITIES ®This section not applicable
(Excluding Shoreline Stabilization)
r. (i) Will fill material be brought to the site? OYes []No [INA b. (i) Will fill material be placed in coastal wetlands/marsh
If yes,
(ii) Amount of material to be placed in the water
(iii) Dimensions of fill area
(iv) Purpose of fill
(CW), submerged aquatic vegetation (SAV), shell bottom
(SB), or other wetlands (WL)? If any boxes are checked,
provide the number of square feet affected.
[]CW FISAV ❑SB
OWL (]None
(ii) Describe the purpose of the fill in these areas:
GENERAL
a. How will excavated or fill material be kept on site and erosion b. What type of construction equipment will be used (e.g.,
controlled? dragline, backhoe, or hydraulic dredge)?
Large grain sand will settle quickly into the engineered sediment Cutterhead hydraulic dredge and pipeline, hopper or
trap located within Carolina Beach Inlet. similar split hull dredge.
C. (i) Will navigational aids be required as a result of the project?
❑Yes ®No [INA
(ii) If yes, explain what type and how they will be implemented.
d. (i) Will wetlands be crossed in transporting equipment to
project site? (]Yes ®No ONA
(ii) If yes, explain steps that will be taken to avoid or
minimize environmental impacts.
Date
New Hanover County Inshore Dredge Material Management Site, Carolina Beach Inlet
Project Name
New Hanover County, c/o Chris Couddet
Applicant Nam
Applicant Sign RECEIVED
DCM WILMINGTON, N(
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
6

2 ATI AC IVIENTS
Carolina Beach Inlet is located in southern New Hanover County, North Carolina and serves as a conduit
between the Atlantic Intracoastal Waterway (AIWW) and the Atlantic Ocean (Appendix A). This shallow draft
inlet was opened by local interest in 1952 and has been actively managed by the United States Army Corps of
Engineers (USACE) for navigation since 1982.
In 1970, the USACE created the 25 -acre engineered borrow site within the throat of the inlet (USACE, 1970).
Since 1981, this feature has been utilized as the borrow source of beach quality material for the Carolina Beach
Coastal Storm Damage Reduction (CSDR) Project. The operational depth of the borrow site has been 40 feet
(ft.) NAVD since 1988 (Appendix A). Studies by the USACE have shown that the borrow site has a passive
infilling rate of approximately 250,000 cubic yards (cy) per year due to the longshore transport of material
migrating into the inlet. This equates to an approximate sand source volume of 750,000 cy per the CSDR's
three-year maintenance cycle (USACE, 1993). Between 1985 and 2016, the average CSDR event recycled
approximately 870K cy from the engineered borrow site (NHC SPO, 2016). Because the 50 -year federal
authorization for the Carolina Beach CSDR Project was set to expire in 2014, New Hanover County applied
for, and was issued state and federal permits in 2012 that allow for the Carolina Beach CSDR Project's
continued maintenance. The CSDR permits include the use of the engineered borrow site and all aspects of the
federal CSDR project as performed by the USACE. Accordingly, the engineered borrow area's accumulated
sand is expected to be reclaimed on a 3 -year cycle for the foreseeable future.
Along with managing an engineered borrow site within the inlet system, other portions of the inlet complex
have been regularly managed for navigation by the USACE. Specifically, the USACE has maintained a 3,900
linear foot portion of the AIWW crossing in proximity to the inlet. This portion of the waterway has been
dredged approximately every two years to a depth of -12 ft. (+/- 2 ft.) mean low water (MLW) with a bottom
width of 90 ft. In addition to the AIWW maintenance dredging, the USACE has also maintained navigation
through Carolina Beach Inlet. This component includes dredging a 150 ft. wide channel spanning 6,300 ft.
with an authorized depth of -8 ft. (+/- 2 ft.) MLW (Appendix A). However, the majority of dredging within
Carolina Beach Inlet has historically occurred within the outer bar channel. The sediment management
techniques within these areas have been facilitated through three methods: (1) side channel placement utilizing
the USACE's sidecast dredge plant Merritt; (2) nearshore placement utilizing the USACE's hopper dredge
plants Murden and Currituck and (3) beneficial shoreline placement along the oceanfront in Freeman Park
utilizing a USACE contractor's hydraulic pipeline dredge. Due to limited federal appropriations for AIWW
crossings and shallow draft inlet maintenance dredging combined with the high demand of the only three (3)
USACE shallow draft dredge plants, New Hanover County recently secured state and federal permits to
maintain Carolina Beach Inlet and the AIWW inlet crossing just as the USACE has for the past several decades
(NCDCM Major Permit #50-16, issued on 5/5/16 and Department of Army Action ID No. SAW -2014-02006,
General Regional Permit #198000291 issued on 5/23/16). Should the USACE's shallow draft dredge fleet
loose the capability and/or capacity to maintain these navigational features, New Hanover County may utilize
their recently obtained permits to continue maintenance dredging withinthe AIWW inlet crossing and Carolina
Beach Inlet.
RECEIVED
OCM WILMINGTON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
7 J

The USACE's current sediment management practices associated with the maintenance dredging efforts in the
AIWW crossing and Carolina Beach Inlet are effective at maintaining the navigability through the inlet;
however, some potential efficiencies have been identified by New Hanover County. As stated above, the
existing disposal strategies of dredged material includes side cast dredging, the disposal of material viapipeline
from the AIWW inlet crossing to the oceanfront shoreline of Freeman Park and hopper dredging from within
the Carolina Beach Inlet channel with disposal nearly two (2) miles south in a nearshore disposal site adjacent
to the Freeman Park oceanfront. Rather than transporting the material to these relatively distant locations, this
proposal seeks to modify the County's existing permits such that the limited resource could be better managed
directly into the engineered borrow site within Carolina Beach Inlet. As such, the borrow area would also serve
as an inshore dredge material management site (IDMMS). This approach would strategically stage the inlet's
beach compatible dredged material within a currently authorized borrow site for future beneficial reuse during
routine Carolina Beach CSDR events. New Hanover County proposes the same hopper or similar type dredge
access to the AIWW crossing with the same potential beneficial reuse management within the IDMMS. In
addition, New Hanover County proposes the use of a modified hydraulic pipeline alignment that positions a
Tremie pipe discharge configuration facilitating positional placement of the dredged beach quality material
within the IDMMS. This modified approach could be applicable to the private sector interests managed by the
USACE for the AIWW inlet crossing maintenance work and other inlet reaches. There are no modifications
to the inlet template or the engineered borrow site associated with this request. The request is to allow for
additional sediment management flexibility.
As stated above, approximately 250,000 cy/year passively infill the inlet by littoral transport. From 1985
through 2016, the average CSDR three-year maintenance cycle event included the recycling of approximately
870,000 cy from the engineered borrow site (NHC SPO, 2016). The proposed activity under this management
modification limits the amount of material actively disposed into the IDMMS to not rise above -14 ft MLW.
Managing the IDMMS's placed material to remain at or below -14 MLW will ensure that the proposed
management flexibility will not alter the navigability or geomorphology of the inlet. An examination of the
CSDR's pre -construction surveys conducted from within the engineered borrow area in 2010 suggests that
there was capacity for 76,400 cy of material to be placed between the bottom of the engineered borrow site
and the -14 ft. NEW depth contour. Results of the same analysis performed with 2013 CSDR pre -construction
data suggest that there was a capacity of more than 60,000 cy of material below the -14 ft. MLW contour.
Given the inlet is maintained at an authorized depth of -8 ft. (+/- 2 ft.) MLW, the request to limit future disposal
activities into the IDMMS to not exceed -14 MLW (historically 60,000 to 76,400 cy every three years) would
not hinder the navigation, functionality or geomorphology of the inlet.
NHC attempts to maintain CBI quarterly and when federally funded, the USACE maintains the Atlantic
Intracoastal Waterway (AIWW) crossing approximately every two years. A NHC CBI maintenance strategy
is to facilitate hopper dredges in the late winter and early fall while ensuring hopper dredge access depths with
supplemental side casting events in the winter and summer. Considering the number of US East Coast shallow
draft channels maintained by the USACE's three-vessel dredge fleet, scheduling plant accessibility is "as
available" more so than "as preferred/planned". The duration of each maintenance event depends on the
amount of inlet shoaled material and the USACE scheduling of available shallow draft dredge plants
Considering the numerous shallow draft channels maintained by the USACE's three-vessel dredge fleet, it is
most likely that only one (1) or two (2) split -hull dredge maintenance events may occur annually within
Carolina Beach Inlet. As such, the 20,000 to 25,000 cy/year placement within the IDMMS is likelyy ant�pper
logistic estimate. RECEiVEU
DCM WILMINGTON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
8

NHC is requesting to modify their state and federal permits (NCDCM Major Permit #50-16, issued on 5/5/16
and Department of Army Action ID No. SAW -2014-02006, General Regional Permit #198000291 issued on
5/23/16) to maintain Carolina Beach Inlet and the AIWW inlet crossing as to allow the county to multi-purpose
the engineered borrow site as an inshore dredge material management site (IDMMS). There are no inlet
template modifications associated with this request. NHC requests a broader access of dredge material
management options that are ecologically sound, based on good engineering and economically justified.
Specifically, the proposed activity involves two facets:
(1) NHC proposes placement of the beach compatible maintenance material within the IDMMS by split -
hull vessels as an alternative to the nearshore placement area two miles south of the inlet. This option
would strategically stage beach compatible material within a currently authorized borrow site for future
beneficial reuse. NHC proposes the same capability within the AIWW crossing with the same
beneficial reuse management option.
(2) NHC proposes a modified hydraulic pipeline alignment that positions a Tremie pipe discharge
configuration to facilitate positional placement of beach quality material within the IDMMS. The
Tremie pipe option would be maneuvered such that "mounding" of discharged sediment is avoided.
The Action Area is defined as the waters and substrate within the authorized Carolina Beach CSDR borrow
area (Appendix A) and immediate surrounding waters. The proposed action includes placement of inlet
maintenance material (sand) into the CSDR borrow area (proposed IDMMS). All other activities and effects
have been assessed and authorized through the referenced SDI -5 permit. The NMFS completed their EFH
consultation on the SDI -5 project on October 30, 2015 and advised the USACE that the project is covered by
an existing ESA consultation, the Regional Biological Opinion Concerning the use of Hopper Dredges in
Channels and Borrow Areas along the Southeast U.S. Atlantic Coast (SARBO). On 1 December 2015, the
USACE concluded the SDI -5 consultation efforts with NOAA Fisheries. Given that channel maintenance
dredging is not a part of this current IDMMS request and that the proposed action is exclusively additional
sediment management flexibility, would NMFS consider the existing SDI -5 ESA consultation as meeting the
IDMMS consultation requirements. Similarly, current ocean dredge material disposal sites (ODMDS) have
been found applicable and covered by the existing ESA consultation (SARBO).
,1-2 PotenVi-fiBenefIfts
The proposed material management options would provide a range of benefits that include the implementation
of a true sediment management strategy; significant cost savings and reduced potential ecological effects. The
current strategy involves side cast disposal, oceanfront disposal on Freeman Park via pipeline and a nearshore
disposal site several miles south of the inlet. During dredge plant availabilities, the additional flexibility would
strategically place the dredged sand directly within the traditionally authorized and used USACE engineered
borrow site. This sediment management modification would allow improved efficiencies in dredged material
management as access to split -hull plants and Tremie pipe upfits are available.
Positive fiscal impacts will be incurred by decreasing the cost per cubic yard moved during maintenance
events. Disposing of the material within the IDMMS will increase the hopper dredges' effective operational
periods by reducing transit times, fuel consumption and the need to confront limiting wave conditions while
attempting to access the nearshore disposal site approximately two (2) miles south of the inlet. Implementing
the proposed Tremie pipe configuration could also show a reduction in cost per cubic yard by diminishing the
mobilization and demobilization costs associated with piping the dredged material from th�&W inlet
crossing or other inlet reaches to Freeman Park. DCM WILMINGTON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
9

Potential ecological benefits could be realized by curtailing the need to mobilize and demobilize the pipeline
extending from the AIWW inlet crossing down the shoulder of the inlet to Freeman Park and the elimination
of hopper dredge ocean transit to the nearshore disposal site. Potential effects to threatened and endangered
flora and fauna including seabeach amaranth, nesting and swimming sea turtles, piping plovers and red knots
would inherently be minimized. In addition, the proposed management action could minimize the effects of
nearshore placement and sidecast disposal activities confining and consolidating the disturbed area to the
existing CSDR borrow area. While this may affect water quality and benthos within the borrow area, benefits
would be realized at the current sidecast and nearshore placement areas resulting in positive effects to managed
species' prey sources, foraging success and water quality at the sidecast and nearshore disposal locations.
RECEIVED
DCM WILMINGTON, NC
COASTAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
10

NEW HANOVER COUNTY
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MATERIAL MANAGEMENT SITE I
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FOR REGULATORY REVIEW ONLY
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CAPE LOOKOUT
CAPE FEAR
ATLANTIC
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NEW HANOVER COUNTY, NORTH CAROLINA
PROJECT SITE
SHEET INDEX
1 COVER SHEET
2 PROJECT OVERVIEW
3 CSDR BORROW AREA/PROPOSED IDMMS PLAN VIEW
4 CSDR BORROW AREA/PROPOSED IDMMS PRE -DREDGE BATHYMETRY PLAN VIEW
5 CSDR BORROW AREA/PROPOSED IDMMS POST -DREDGE BATHYMETRY PLAN VIEW
6 CSDR BORROW AREA/PROPOSED IDMMS CROSS SECTIONS A -A' & B -B'
GENERAL NOTES:
1. COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
DATUM 1983, (NAD83).
2. ELEVATIONS ARE IN FEET REFERENCED TO NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88).
3. PRE -DREDGE HYDROGRAPHIC SURVEY PERFORMED BY USACE MARCH 10, 2016.
4. POST -DREDGE HYDROGRAPHIC SURVEY PERFORMED BY USACE APRIL 9, 2016.
5. AERIAL PHOTOGRAPH DATED: MARCH, 2010.
LEGEND
CSDR BORROW AREA/PROPOSED IDMMS
CSDR BORROW PROPOSED
COORDINATE LOCATION AND ID IDMMS
RECEIVED
DCM WILMINGTON, NC
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