20011836 Ver 3_CAMA Application_20120216

Beverly Eaves Perdue
Governor
February 14 2012
MEMORANDUM
TO Cyndi Karoly Supervisor
401 Oversight & Express Permits Unit
Division of Water Quality Surface Water Protection
20 1 8 1
Dee Freeman
Secretary
FROM Doug Huggett NC DENR DCM Mayor Permits Coordinator
400 Commerce Ave Morehead City NC 28557 (Courier 11- 12 -09)
SUBJECT CAMA/Dredge & Fill Major Permit Application Review
Applicant Town of Holden Beach (MM #14 02) — Central Reach Beach Nourishment
Project Location Between 262 Ocean Blvd East & 781 Ocean Blvd West adjacent
to the Atlantic Ocean in Holden Beach Brunswick Co
Proposed Project Applicant proposes mayor modification to existing SP #14 02 to
include an offshore borrow area to provide beach compatible fill
material for beach nourishment
Please indicate below your agency s position or viewpoint on the proposed project and
return this form by March 9, 2012 If you have any questions regarding the proposed
project contact Holley Snider (910)796 -7270, when appropriate in depth comments
with supporting data is requested
REPLY This agency has no objection to the project as proposed
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
�D
SIGNED DATE FEB 6 M42
Art � � DENR WATER QUALITY
ruq►V"*1 11011?0i�TER BRANCH
400 Commerce Ave Morehead City NC 28557 3421
Phone [phone] \ FAX [phone] Internet www nccoastalmanagement net One
An Equal Opportunity \ Affirmative Action Employer NorthCarolina
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DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
APPLICANTS NAME Town of Holden Beach
2 LOCATION OF PROJECT SITE The project site includes approximately 22 000 linear feet the beachfront area of the
Town of Holden Beach (located between 262 Ocean Boulevard East and 781 Ocean Boulevard West) adjacent to
the Atlantic Ocean in Holden Beach Brunswick County
Photo Index -2006 4 (6220 6212) Oceanfront 2000 4 (42 34) Oceanfront 1995 4 (33 41) Oceanfront
State Plane Coordinates— GPS File P021410B (uncorrected)
X 2216352 243 Y 59663 065
Lat 330 54 42 43366 N Long 780 17 13 36760 W
3 INVESTIGATION TYPE CAMA / D &F
4 INVESTIGATIVE PROCEDURE Dates of Site Visit — 1/12/2012
Was Applicant Present — No
5 PROCESSING PROCEDURE Application Received — Completed on 1/16/2012
Office — Wilmington
6 SITE DESCRIPTION
(A) Local Land Use Plan — Town of Holden Beach
Classification From LUP No Classification /Developed
(B) AEC(s) Involved OH IH
(C) Water Dependent Yes
(D) Intended Use Public
(E) Wastewater Treatment Existing — Not applicable (N/A)
Planned None
(F) Type of Structures Existing —Commercial and Residential
Planned — No structures planned
(G) Estimated Annual Rate of Erosion 2 /year to 7 5 /yr Source —1998 LTAASCR Update
7 HABITAT DESCRIPTION [AREA]
DREDGED FILLED OTHER
(A) Vegetated Wetlands
(B) Non Vegetated Wetlands
+/ 25 700 400 sq ft
+/ 1650,000 sq
(Open water)
(509 acres or 1310 000
ft ( +/ 38 acres)
yds3)
(wet sand beach
spoil deposition)
(C) Other(Highground)
(D) Total Area Disturbed 27 350 400 ftZ (547 ac )
(E) Primary Nursery Area No
(F) Water Classification SA Open Yes
8 PROJECT SUMMARY The Town of Holden Beach proposes mayor modification to existing State Permit #14 02 to
include an offshore borrow area to provide beach compatible fill material for beach nourishment

Town of Holden Beach
Page Two
9 PROJECT HISTORY AND DESCRIPTION
The project site includes the oceanfront shoreline of Holden Beach and an offshore borrow area located between 18
and 3 miles offshore of the Long Beach section of Oak Island and to the southeast of Lockwoods Folly Inlet The disposal
area for the project would be approximately 22 000 linear feet of the oceanfront beach located between 262 Ocean
Boulevard East and 781 Ocean Boulevard West immediately adjacent to the Atlantic Ocean in Holden Beach Brunswick
County To find the project site from US Highway 17 in Shallotte travel south on Holden Beach Road (NC 130) Travel
approximately 7 5 miles and follow NC 130 to the right and continue south approximately 10 mile to the base of the
Holden Beach Bridge Holden Beach is a barrier island located in Brunswick County near the town of Supply It is flanked
on one end by the Lockwoods Folly River with the Shallotte River on the other end Holden Beach is adjacent to the
Atlantic Ocean with the Atlantic Intracoastal Waterway (AIWW) separating the island form the mainland The island is
heavily developed mostly residential The high ground portion of the property is vegetated primarily with American
Beach Grass (Ammophilo breviligulata) and Sea Oats (Uniola paniculata) The project site encompasses approximately
+/ 7 miles of oceanfront beach beginning at 262 Ocean Boulevard East and terminating near 781 Ocean Boulevard
West The longterm annual erosion rate for the Town of Holden Beach varies from 2 /year on the West end to 7 5 /year
on the east end per the Division of Coastal Management s 1998 Annual Erosion Rate maps and the 100 year storm
recession is approximately 330 giving a total Ocean Hazard AEC from approximately 450 feet to as much as 780 feet as
measured from the First Line of Stable Natural Vegetation (FLSNV)
The Town of Holden Beach was issued CAMA Major/ Dredge and Fill permit #14 02 on February 1 2002 for the
nourishment of approximately 5 7 miles of oceanfront shoreline utilizing upland sand sources from the Oyster Harbour
Subdivision and Seascape Subdivision which at that time were development projects under construction The fill placed
on the beach was the supplement and extend the Federal Section 933 project authorized by the Army Corps of
Engineers On February 27 2002 State Permit #14 02 was amended to add language in condition (4) concerning the
requirement for the delineation of the first line of stable natural vegetation prior to any beach nourishment activity On
February 6 2003 State Permit #14 02 was modified to add an additional borrow site located within the Lakes at
Lockwood subdivision as a source for obtaining beach quality material for the project On October 4 2005 State Permit
#14 02 was modified /renewed to include the following increasing the original volume of material from 735 000 cy to
800 000 cy extending the eastern permit boundary and additional 850 linear feet extending the permit expiration date
to December 31 2008 increasing the design berm height to +8 feet NGVD29 and disposal cross sectional width to
approximately 300 feet and to allow the use of a new borrow site known as the Kirby Walter Borrow Site CAMA
Notice of Violation #06 34 was issued on May 26 2007 for the placement of non beach compatible material and has
been closed and the assessment paid On October 21 2007 the US Army Corps of Engineers reinstated the Town s
permit with revisions From February to March 2008 the Town placed approximately 201000 cy of beach compatible
material from the Smith borrow site on the beach On February 8 2009 State Permit #14 02 was modified to allow for
the placement of approximately 190 000 cy of material in the area which received sand in 2008 under this permit The
applicant states that the preferred borrow area is the Smith site with the Boyd borrow area serving as the back up The
permit was due to expire on December 31 2009 however this permit is subject to Session Law 2009 406 and as
amended by Session Law 2010 177 the Permit Extension Act and is now due to expire on December 31 2013
The Town of Holden Beach s Land Use Plan does not have the dry sand beach classified however the upland areas of
this project are classified as Developed A cultural resource and archaeological assessment was conducted using remote
sensing data and one magnetic anomaly was found within the project area The analysis of the data determined that the
magnetic anomaly is likely marine debris discarded crab pot pipe small diameter rod or cable (see attachment D
Report 2) The waters of the project site are classified as SA by the NC Division of Water Quality 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

Town of Holden Beach
Page Three
10 PROPOSED PROJECT
The applicant is proposing mayor modification of the existing State Permit #14 02 to include the placement of
approximately 1 310 000 cy of beach compatible fill material dredged from an offshore borrow source along
approximately 22 000 linear feet of shoreline between 262 Ocean Boulevard East (OBE) and 781 Ocean Boulevard West
(OBW)(ref Permit sheets 3 15) These addresses coincide with Holden Beach baseline monument Stations 40 +00 and
260 +00 The average fill placement density is approximately 60 cy /ft along the entire length of the project area The
proposed design includes a dune feature at elevation +9 5 feet NGVD 29 in order to repair and replace the existing
dunes The proposed dune feature would be constructed seaward of the existing dune scarp and have a proposed crest
width of 25 feet (see Permit Sheet 16) The applicant states that construction berm widths would average between 140
and 190 feet with a foreshore construction slope of 1V 15H extending seaward to the intersection of the existing profile
The applicant has stated that fill quantities would be determined based on economics and need at the time of
construction therefore fill volume location and distribution would be determined immediately prior to construction
and would be confined to the proposed project limits
The proposed borrow area extends from approximately 18 to 3 miles offshore southeast of the Lockwoods Folly Inlet
and offshore of the Long Beach section of Oak Island The proposed borrow area consists of 590 acres and existing
elevation range from 33 to 39 feet NGVD 29 The applicant has stated that the amount of beach compatible sand for
dredging the borrow area to a depth of 2 feet would yield approximately 19 million cubic yards and up to 3 3 million
cubic yards for dredging to a depth of 3 5 feet The applicant has stated that the borrow area would provide sufficient
sand for 2 to 4 large scale ( >500 000 cubic yards) nourishment projects The applicant is proposing a shallow dredge cut
( <4 feet) due to the presence of compatible materials in the upper layer of sediments underlain by marginal material
and the by unsuitable materials The geotechnical data and sediment characteristic information indicates that an
appropriate amount of samples were collected at adequate intervals (supporting studies documents can be provided
upon request) Based on the information presented in the application package the applicant was able to meet the
sediment criteria established under current CRC Rules As proposed the project would consist of no more than 5% fines
5% gravel 5% granular and 17 7% shell (calcium carbonate) Actual calculations of those materials found in offshore
borrow area through borings collected during 2011 are 0 35 mm grain size 2 11% gravel 3 4 %granular 5% fines and
12 4% shell (calcium carbonate) Refer to Table 4 on Page C 6 of Attachment C in the application package for tabular
information on grain size analysis These calculations represent 23 vibracore samples that were collected from the
offshore borrow area In summary the proposed beach fill project would remain within the Town limits and the entire
project would overlap previously impacted areas along the oceanfront
11 ANTICIPATED IMPACTS
Potential impacts to the Lockwoods Folly Inlet and areas adjacent to the borrow area are unknown The proposed
maintenance dredging would disturb approximately 25 700 400 ft 2 of offshore borrow area and the proposed beach
nourishment activities would result in the disturbance of approximately 1650 000 ft 2 of oceanfront beach above and
below NHW Approximately 2 918 520 ft2 of shallow bottom area below NHW would also filled as a result of
nourishment activities Placement of sand on the beach will result in temporary mortality for intertidal micro fauna
such as crabs and worms Placement of material below the high tide line will result in temporary turbidity within the
near shore waters of the Atlantic Ocean potentially affecting fish in the area at the time Limiting the work to the
winter season should reduce potential adverse impacts to fish communities There may be some impact to sea turtle
nesting as a result of this project The end result of the project should be a wider beach area with a sloping profile
which would be beneficial to the turtles Beach compaction should be monitored and tilling should be required to
reduce the likelihood of impacting sea turtle nesting and hatching activities Erosion escarpments forming after the
project completion should also be leveled to reduce turtle nesting impacts Sea beach amaranth could be negatively
impacted initially The project would serve to renourish the public beach on 5 7 miles of Holden Beach Public use of
the beach during the renourishment process would be limited to some degree
Submitted by H Snider Date February 13 2012 Office Wilmington

The Town of Holden Beach
Incorporated 1969
110 Rothschild Street Phone [phone]
Holden Beach North Carolina 28462 Fax [phone]
December 2 2011
Mr Fran Way PE
Applied Technology & Management Inc
360 Concord Street
Suite 300
Charleston SC 29401
RE Acknowledgement and Authorization for Holden Beach Nourishment Project
Dear Mr Way
The Town of Holden Beach authorizes Applied Technology & Management Inc to act on its
behalf regarding the CAMA Mayor Permit Application dated December 2 2011 regarding the
proposed beach nourishment project The USACE and their entities are hereby authorized to
deliver responses notifications or other documents to Applied Technology and Management
Inc in lieu of direct service on the principal Town of Holden Beach This acknowledgement and
authorization does not in any way create delegate sanction or permit any decision making
power by Applied Technology and Management Inc on behalf of the Town of Holden Beach
Please let me know if you need additional information
Sincerely 1
,Z7
David Hewitt
Town Manager
Mayor 1 Alan Holden
Mayor Pro Tem Don Glander
Commissioners Ray Lehr Sandy Miller & Sheila Young
Town Manager David W Hewett

w _■rpli fiN fer
20 120 18 1
Nigernomep ■ Yr��(last revised 12127106)
North Carolina DIVISION OF COASTAL MANAGEMENT
1 Primary Applicant/ Landowner Information
Business Name
Project Name (if applicable)
Town Of Holden Beach
Central Reach Beach Nourishment
Applied Technology & Management Inc (ATM)
Applicant 1 First Name
MI
Last Name
Agent/ Contractor 1 First Name
David
W
Hewett
Applicant 2 First Name
MI
Last Name
Way
n/a
n/a
n/a
If additional applicants please attach an additional page(s) with names listed
Mailing Address
PO Box
City
Phlegar
State
PO Box 449
449
Supply
PO Box
NC
ZIP
Country
Phone No
FAX No
28462
USA
910 842
6488 ext
910
842 9315
Street Address (d different from above)
City
State
ZIP
110 Rothschild Street
Holden Beach
NC
FAX No
28462
Email
843 414 1050
david hewett @hbtownhall com
2 Agent/Contractor Information
Business Name
Applied Technology & Management Inc (ATM)
Agent/ Contractor 1 First Name
MI
Last Name
Fran
J
Way
Agent/ Contractor 2 First Name
MI
Last Name
Sam
Phlegar
Mailing Address
120336
PO Box
City
State
PO Box 20336
Charleston
SC
ZIP
Phone No 1
Phone No 2
29413
843 414
1040 ext
ext
FAX No
Contractor #
843 414 1050
n/a
Street Address (if different from above)
City
State
ZIP
360 Concord Street Suite 300
Charleston
Sc
29401
Email
Tway @appliedtm corn
<Form continues on back>

Form DCM MP 1 (Page 2 of 5)
APPLICATION for
Major Development Permit
3 Project Location
County (can be multiple)
Street Address
State Rd #
Brunswick
781 Ocean Boulevard West to 240 Ocean Bouldevard East
1116
Subdivision Name
City
State
Zip
n/a
Holden Beach
NC
28462
Phone No
Lot No (s) (if many attach additional page with list)
910 842 6488 ext
See Attachment E
a In which NC river basin is the project located?
b Name of body of water nearest to proposed project
Lumber
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
n/a
4 Site Description
a Total length of shoreline on the tract (ft)
b Size of entire tract (sq ft )
—22 000 feet (entire island = -43 000 ft of shoreline)
—8 363 520 sq ft (-192 acres) = beach fill footprint
c Size of individual lot(s)
d Approximate elevation of tract above NHW (normal high water) or
n/a
NWL (normal water level)
(If many lot sizes please attach additional page with a list)
varies 0 to +14 ft NGVD ®NHW or ❑NWL
e Vegetation on tract
None Project will occur seaward of existing dune vegetation and does include a dune enhancement
f Man made features and uses now on tract
Holden Beach Pier recreation
g Identify and describe the existing land uses adiacent to the proposed project site
Oceanfront property owner uses include residential and commercial
h How does local government zone the tract?
i Is th e proposed project consistent with the applicable zoning?
Residential /Multifamily /Commercial
(Attach zoning compliance certificate if applicable)
®Yes []No ❑NA
I Is the proposed activity part of an urban waterfront redevelopment proposal? ❑Yes ®No
k Hasa professional archaeological assessment been done for the tract? If yes attach a copy ®Yes ❑No ❑NA
If yes by whom? Offshore Borrow Area = T A R (see
attachments C D)
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? '
<Form continues on next page> I t

Form DCM MP 1 (Page 3 of 5)
APPLICATION for
Major Development Permit
m (i) Are there wetlands on the site? []Yes; ®No
(n) Are there coastal wetlands on the site? ❑Yes ®No
(in) If yes to either (Q or (n) above has a delineation been conducted? []Yes []No
(Attach documentation if available)
n Describe existing wastewater treatment facilities
Centralized municipal wastewater facility landward of project limits
o Describe existing drinking water supply source
Drinking water for the Town of Holden Beach is supplied by the Brunswick County water system
p Describe existing storm water management or treatment systems
NC DOT and private stormwater systems exist Curb and gutter systems french drains swales underdrain systems
5 Acbwhes and Impacts
a Will the project be for commercial public or private use?
❑Commercial ®Public/Govemment
❑Pnvate /Community
b Give a bnef descnpbon of purpose use and daily operations of the project when complete
See project description in Attachment A
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
See project description in Attachment A
d List all development activities you propose
See project description In Attachment A
e Are the proposed activities maintenance of an existing project new work or both?
Both (a component of ongoing beach
management plan)
f What is the approximate total disturbed land area resulting from the proposed project?
192 ❑Sq Ft or ®Acres
g Will the proposed project encroach on any public easement public accessway or other area
❑Yes ®No ❑NA
that the public has established use of?
h Describe location and type of existing and proposed discharges to waters of the state
See protect description in Attachment A
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 ❑NA
If yes attach a mitigation proposal
<Form continues on back>

Form DCM MP 1 (Page 4 of 5)
APPLICATION for
Major Development Permit
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 mayor development application Please consult the application
rnstruchon booklet on how to properly prepare the requued 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 mad 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 Attachment E list of adjacent oceanfront property owners Return receipts will Phone No
be provided at a later date
Address
Name See Attachment E Phone No
Address
Name See Attachment E 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
See Attachment A for more description CAMA Permit No 14 -02 (issued 2/1/02)
USACE Permits 200101101 (2128/02) No 200500935 (3/9/06) NCDWQ Permit No 20011836 (2/02)
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 certify that the information provided in this application is truthful to the best of my knowledge
Date _12 15 201
Print Name _Fran Way
Signature
Please indicate application attachments pertaining to your proposed project
®DCM MP 2 Excavation and Fill Information ❑DCM MP 5 Bridges and Culvert$
❑DCM MP 3 Upland Development
❑DCM MP-4 Structures Information

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 EXCAVATION E] 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 beach compatible sand
—1 600 000 cy (beach fill placement + 20 / see Attachment A)
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) n/a
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 excavation in these areas
Borrow area for beach nourishment (see Attachments A and C)
12 DISPOSAL OF EXCAVATED MATERIAL [J This section not applicable
a Location of disposal area b Dimensions of disposal area
Holden Beach shoreline 22 000 ft alongshore cross shore width varies (250 -420 ft)
c (i) Do you claim title to disposal area?
❑Yes ®No ❑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
❑CW ❑SAV ❑SB
OWL ®None
(ii) Describe the purpose of disposal in these areas
Beach Nourishment (see Attachment A)
d (i) Will a disposal area be available for future maintenance?
❑Yes ®No ❑NA
(n) If yes where?
f (i) Does the disposal include any area in the water?
®Yes ❑No ❑NA
(ii) If yes how much water area is affected?
Approximately 140 acres below MHW
Access
Other
Channel
(NLW or
Canal
Boat Basin
Boat Ramp
Rock Groin
Rock
Breakwater
(excluding
shoreline
NWL )
stabilization
Length
NA
NA
NA
NA
NA
NA
22 000
Width
NA
NA
NA
NA
NA
NA
380
Avg Existing
NA
NA
NA
NA
NA
NA
7 to +9 5
Depth
NGVD (fill)
Fi at
NA
NA
NA
NA
NA
N'°`
7 to
Project
Depth
(fill)
( )
1 EXCAVATION E] 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 beach compatible sand
—1 600 000 cy (beach fill placement + 20 / see Attachment A)
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) n/a
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 excavation in these areas
Borrow area for beach nourishment (see Attachments A and C)
12 DISPOSAL OF EXCAVATED MATERIAL [J This section not applicable
a Location of disposal area b Dimensions of disposal area
Holden Beach shoreline 22 000 ft alongshore cross shore width varies (250 -420 ft)
c (i) Do you claim title to disposal area?
❑Yes ®No ❑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
❑CW ❑SAV ❑SB
OWL ®None
(ii) Describe the purpose of disposal in these areas
Beach Nourishment (see Attachment A)
d (i) Will a disposal area be available for future maintenance?
❑Yes ®No ❑NA
(n) If yes where?
f (i) Does the disposal include any area in the water?
®Yes ❑No ❑NA
(ii) If yes how much water area is affected?
Approximately 140 acres below MHW

F
3 SHORELINE STABILIZATION ®This section not applicable
(if development is a wood groin use MP-4 — Structures)
a i ype ui snuieune siaomzanon
[]Bulkhead ❑ Riprap ❑Breakwater /Sill ❑Other n/a
c Average distance waterward of NHW or NWL n/a
e Type of stabilization material
n/a
D Length
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
g Number of square feet of fill to be placed below water level h Type of fill material
Bulkhead backfill Riprap
Breakwater /Sill Other
I Source of fill material
4 OTHER FILL ACTIVITIES ❑This section not applicable
(Excluding Shoreline Stabilization)
a (i) Will fill material be brought to the site? MYes UNo UNA
If yes
(ii) Amount of material to be placed in the water - 1.000.000
cy (below MHW)
(iii) Dimensions of fill area 192 acres
(iv) Purpose of fill
To increase beach width and volume for shore protection
(see Attachment A for more description)
b (i) Will fill material be placed in 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
❑CW ❑SAV ❑SB
OWL ®None
(ii) Describe the purpose of the fill in these areas
Placement will only occur on beach and sandy nearshore
bottom
5 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 dragline
controlled? backhoe or hydraulic dredge)?
Contractor shall employ temporary sand berms and dikes to control offshore hopper dredge typical land based (tracked and wheeled)
erosion and turbidity during active filling equipment on land (dozers loaders etc )
c (i) Will navigational aids be required as a result of the project? d
®Yes []No ❑NA
(ii) If yes explain what type and how they will be implemented
Dredging contractor will be required to meet USCG requirements
1215-2011
Date
Holden Beach Central Reach Nourishment
(i) Will wetlands be crossed in transporting equipment to protect
site? ❑Yes ®No ❑NA
(ii) If yes explain steps that will be taken to avoid or minimize
environmental impacts
FramWay
ADDlicant Name
Project Name — `
Applicant Signature

PERMIT APPLICATION
for
Central Reach Beach Nourishment
Project
Town of Holden Beach, NC
Applicant
Torn of Holden Beach
PO Box 449
Supply, NC 28462
Prepared by
Applied Technology and Management, Inc
PO Box 20336
Charleston, SC 294130336
December 15, 2011

Table of Contents
DCM Application Forms and Check
Attachment A Project Purpose and Description
Attachment B Permit Sheet Drawings
Attachment C Borrow Area Information and Sediment Compatibility
Attachment D Supporting Studies and Data
Attachment E Adjacent Property Owner Information
Attachment F Applicants Letter of Authorization

ATTACHMENT A
PROJECT DESCRIPTION
C
V g ( T
w

Attachment A
Town of Holden Beach Nourishment
Project Purpose and Description
Town of Holden Beach
PO Box 449
Supply NC 28462
Proposed Project Holden Beach Nourishment
Atlantic Ocean
Holden Beach Shoreline Central Reach (-22 000 ft of linear shoreline)
Lat 33 54 8516
Long 78 16 0674
Applied Technology & Management
PO Box 20336
Charleston SC 29413 -0336
84314141040
1 Project Purpose and Need
Holden Beach is a 9 mile long transgressive barrier island located in Brunswick County
North Carolina (ref Permit Sheets 1 and 2) where long term and episodic storm erosion
continually threatens the coastal environmental habitats recreational beach tourism
and upland development on the island Consequently the Town of Holden Beach
referred to herein as the Town has undertaken several beach nounshment projects to
protect and enhance its shoreline All nourishment activities have proven valuable in
providing a healthy beach system as well as a storm buffer to reduce losses to
homeowners and the Town as well as State and Federal infrastructure The Town plans
to continue this process to maintain its healthy beach and to minimize short and long
term erosion effects and has established a dedicated funding source (Beach
Preservation /Access & Recreation/Tourism [BPART] Fund) which includes funds for
beach management
The purpose of the proposed project which is a component of the Town of Holden
Beach s comprehensive beach management program is to provide beach restoration
along eroding sections of shoreline sufficient to maintain the island s restored protective
and recreational beachfront and natural dune system
2 Project Site History
There are essentially two reaches of beach that are historically nourished on Holden
Beach
1) Central Reach (baseline Station 40 +00 west to Station 270 +00)
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2) East End (Station 40 +00 east to Lockwoods Folly Inlet)
Figure 1 presents these two reaches with Holden Beach and USACE beach fill
placements since 2001 Since 2002 Holden Beach has performed beach nourishment
activities along the Central Reach under CAMA Permit No 14 02 NCDWQ Permit No
20011836 and USACE Permits No 200101101 and No 200500935 The Town most
recently modified its existing permits in early 2009 to allow a FEMA sponsored
nourishment to mitigate for Hurricane Hanna damages
Over the last decade the Town has not placed material on the East End beach (area of
highest historical erosion rates) and has relied on USACE shallow draft waterway
maintenance dredging projects for East End sand placement to help offset continued
erosion It is noted that the Town s nourishment projects are completely funded by the
Town from permitting through design construction and monitoring The proposed
nourishment is located within the Central Reach and is independent of any activities
associated with Lockwoods Folly Inlet or Shallotte Inlet
The USACE placed approximately 525 000 cy of material in early 2002 along portions of
the Central Reach as beneficial placement of dredged material from the deepening of
Wilmington Harbor (i a the Section 933 Project ) The USACE also has plans for
future nounshments of the Central Reach via the Brunswick County Beaches 50 yr
coastal storm damage reduction project However funding and other issues have
resulted in ongoing delays of the USACE 50 yr project on Holden Beach As a result no
near term USACE Central Reach nourishment projects are anticipated
The general goal of the proposed project is to maintain a healthy wide beach At a
minimum the goal of the Town s beach management plan is no net reduction in sand
volume however it is believed that a larger nourishment needs to occur to get ahead
of the background erosion and increase the current beach widths The backbone of the
Town s nourishment activities since 2001 was the Federal Section 933 project
associated with the Wilmington Harbor deepening
3 Project Description
The proposed activity involves a Town funded beach fill and stabilization plan The
proposed project will place approximately 1 310 000 cubic yards (cy) of beach quality
sediment dredged from an offshore borrow source along approximately 22 000 linear
feet (if) of shoreline between Ocean Boulevard East (OBE) 262 and Ocean Boulevard
West (OBW) 781 (ref Permit Sheets 3 15) These addresses coincide with Holden
Beach baseline monument Stations 40 +00 and 260 +00 respectively Both addresses
and baseline stations are provided on permit drawings The proposed borrow area
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extends from -18 to 3 miles offshore southeast of Lockwoods Folly Inlet More detailed
descriptions of the beach fill borrow area and construction methods are provided below
31 Beach Fill
The beach nourishment design includes the placement of up to 1 310 000 cy of in place
sand between Stations 40 +00 and 260 +00 Refer to Permit Sheets 3 15 for fill
placement plan views The fill placement density will average -70 cy /ft along the
eastern half of the project and -55 cy /ft along the western half The Holden Beach pier
at Station 175 +00 represents the delineation of the eastern and western portions of the
project Taken as a whole the average fill placement density is -60 cy /ft along the
entire length of the project including tapers Tapers at each end of the main fill extend
along the last - 1 500 2 000 ft of the project limits and are included to reduce the bulge
effect in the shoreline which can accelerate end losses
The selected design includes a dune feature at elevation +9 5 ft NGVD29 to
repair /enhance existing dunes The dune feature will be constructed seaward of the
existing dune scarp and feature a crest width of typically 25 ft (ref Permit Sheet 16)
The dune construction is proposed to enhance the dune system in general as well as to
offset dune scarping from Hurricane Irene as well as other significant episodic storm
events that occur during elevated water levels Figure 2 presents a photo of the typical
scarping following Hurricane Irene Note that constructed dunes will not impact existing
dune vegetation and that vegetation sprigging of the constructed dune is planned
A3

The dune will transition at 1 V 5H slope to a variable width beach berm at elevation +7 ft
NGVD29 Construction berm widths typically average between 140 and 190 ft From
the seaward berm crest a foreshore construction slope of 1V 15H extends seaward to
the intersection with the existing profile Refer to Sheet 16 for typical beach fill cross
sections
Initial adjustment of the construction berm to conform to a more natural slope is
anticipated to occur over typically the first 6 12 months following construction After this
initial equilibration the average increase in beach width is anticipated to vary from -70
100 ft along the eastern half to --55 75 ft along the western half of the project Some
variation in equilibrated beach widths is expected It is noted that the estimated
maximum fill placement quantity will be 1 310 000 cy with final quantities to be
determined based on economics and need at the time of construction The final required
fill volume location and distribution will be determined immediately prior to project
construction and be based upon immediate pre construction beach condition surreys
Final fill placement will be limited to the project limits proposed herein
32 Borrow Area
A 590 acre offshore borrow area has been identified located between -1 8 and 3 miles
offshore of the Long Beach section of Oak Island and to the southeast of Lockwoods
Folly Inlet (refer to Figure 3 and Sheet 17) Borrow area existing elevations range from
33 to 39 ft NGVD29 Estimated volume yield of compatible beach sand for a cut depth
of 2 ft (minimum/conservative) is 1 9 million cubic yards (cy) and up to 3 3 million cy for a
3 5 ft cut depth Given an orderly excavation sequence the borrow area as delineated
could thus provide sufficent sand for 2 to 4 large ( >500 000 cy each) nourishment
projects It is noted that quantities of borrow materials to be excavated will be typically
15 25% larger than the in place beach fill quantity due to the overfill factor and losses
inherent to the hydraulic dredging and conveyance process
Table 1 Estimated Borrow Area (BA) Volume Yield for Differ►na Dredge Cut Devths
A shallow dredge cut is planned (less than 4 ft) due to the presence of compatible
materials in the upper layer generally underlain by marginal material then by unsuitable
materials (buried hardbottom and /or unacceptable percentages of silts and clays) Due
to this relatively shallow layering of suitable materials borrow area location and winter
weather conditions (i a dredging environmental window) an offshore hopper dredge will
A4
Dredge Cut
Area
Depth
Volume
(Acres)
(ft)
(cy)
Notes
590
35
3 337 000
Maximum cut
2
1 907 000
Conservative minimum cut
A shallow dredge cut is planned (less than 4 ft) due to the presence of compatible
materials in the upper layer generally underlain by marginal material then by unsuitable
materials (buried hardbottom and /or unacceptable percentages of silts and clays) Due
to this relatively shallow layering of suitable materials borrow area location and winter
weather conditions (i a dredging environmental window) an offshore hopper dredge will
A4

be required and is well suited to excavate the borrow materials The proposed borrow
area is a typical size for an offshore borrow area where a shallow dredge cut is
proposed A larger footprint allows the hopper equipment to operate in long lanes to
maximize production Note that the USACE 2007 North Myrtle Beach borrow area was
approximately 730 acres with dredge cuts as shallow as 1 2 ft and also utilized a hopper
dredge
Borrow area cross sections are provided on Sheets 18 20
Refer to Attachment C for more details on the borrow area and sediment compatibility
Figure 3 Photo Taken during Seismic Data Collection to Show Approximate Distance from Shore
33 Construction Methods
Typical heavy marine construction equipment will be utilized for the project Dredging
and beach fill initial placement will occur hydraulically via an offshore certified hopper
dredge Once the hopper removes a load of sand from the borrow area the dredge will
travel to a designated transfer station where the sand will be pumped through a
temporary pipeline to the beach fill area Temporary sand berms /dikes and various
piping techniques will be utilized to control the flow of sand direct the slurry parallel to
A5

shore and minimize resulting turbidity in the nearshore zone Heavy equipment
including tracked bulldozers wheeled pipe moving trucks etc will be utilized at the
beach fill placement site to grade the beach fill to the construction template landward of
the mean high water line
Beach nourishment is estimated to require -120 days The project is anticipated to
occur in winter 2012/2013 however this may change based on future erosion and wave
activity
4 Impact Summary
Refer to Application Form MP 1 and MP 2 for estimated impacts of construction fill
placement and borrow area excavation No wetlands or submerged hardbottom
resources will be impacted by the project
41 Natural Resources
The 2010 NC Coastal Habitat and Protection Plan (CHPP) presents a comprehensive
analysis related to potential impacts to natural resources related to beach nounshments
and offshore borrow areas (Deaton et al 2010) In terms of borrow areas the CHPP
sites two studies that found that year to year variability in the benthic community in
addition to multiple hurricanes during the monitoring penod made effects from the
project difficult to determine suggesting that the effect of beach nourishment is minimal
compared to the natural variability of the system (Posey and Alphm 2009 Posey and
Alphin 2002)
The CHPP also states Hopper dredges tend to have long shallow dredge cuts and
unimpacted ridges between cuts which facilitate recruitment into dredged areas while
pipeline dredges have deep cuts
In terms of benthic recovery on the beach the CHPP found that the rate of reported
biological recovery on nourished intertidal beaches has varied from about one month to
one year but in some cases longer Holden Beach has an established
macro invertebrate monitoring plan for ghost crabs Donax clams and mole crabs which
has typically shown insignificant differences between project and control transects
The Town proposes to continue this monitoring plan for the proposed project
The 2011 NC Beach and Inlet Management Plan (BIMP) identified seabeach amaranth
piping plover colonial waterbirds loggerhead sea turtles green sea turtles West Indian
manatees as the primary protected species in the Region 1 area (which includes Holden
Beach)
A6

Sea Turtles
The loss of nesting beaches is a concern for sea turtle managers Some studies have
found that beach nourishment has the potential to help threatened and endangered sea
turtle populations by providing increased or improved nesting habitat that would
otherwise be unavailable especially in areas where beaches have eroded to the point
where little nesting habitat was available prior to the nourishment (Byrd 2002 Ernest and
Martin 1999)
Therefore there will likely be a long term benefit regarding available sea turtle nesting
habitat However construction activities related to the proposed project does have the
potential to harm sea turtles or interfere with their nesting activities To manage these
potential impacts the construction methodology will include measures to avoid or
minimize impacts to sea turtles and their nesting habits and typical post project
monitoring will be conducted
Piping Plovers
Figure 4 presents the proposed project relative to US Fish and Wildlife Service
designated critical habitat for the piping plover As seen in this figure the western end of
Holden Beach is designated as critical habitat and is approximately 11 000 feet from the
proposed beach fill The project also does not occur in DCM designated Inlet Hazard
Areas
5 Project Longevity
The proposed project volume is similar in magnitude to the volume that has been placed
on Holden Beach in smaller shorter projects over the last 10 years Results of the
Town s ongoing monitoring plan indicate that the beach nourishment activities over the
past 10 years have been sufficient to offset background and storm erosion (including
both Tropical Storm Hanna and Hurricane Irene) to where the beach is generally in a
healthier condition currently than it was in 2000
Monitoring data also shows that the beach fill placed along the central east reaches of
the island have fed the beaches to the west portion of the island over time via net littoral
transport Given the monitored performance of the project and historical erosion rates
the proposed project is anticipated to provide —7 10 years of benefits in terms of
increased beach width compared with present conditions It is noted that future wave
activity (from tropical storms nor'easters etc) cannot be forecast and project longevity
is directly related to this Additionally the beach fill may not erode uniformly and
monitoring will be conducted to document protect performance and pny maintenance
needs
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6 Long -term Monitoring
The Town of Holden Beach has two existing monitoring plans that it proposes to
continue for this project 1) Beach Nourishment Monitoring Plan and 2)
Macromvertebrate Monitoring Plan Both these plans have been utilized for beach fill
related activities dating back to 2002 and establish a suitable baseline for any future
studies
7 References
Byrd J 1 (2002) The Effect of Beach Nourishment on Loggerhead Sea Turtle ( Caretta
caretta) nesting in South Carolina (MS Thesis College of Charleston)
Deaton AS W S Chappell K Hart J O Neal B Boutin 2010 North Carolina Coastal
Habitat Protection Plan North Carolina Department of Environment and Natural
Resources Division of Marine Fisheries NC 639 pp
Dean and Dalrymple (2002) Coastal processes with engineering applications
Cambridge University Press
Ernest R G and R E Martin (1999) Martin County beach nourishment project sea
turtle monitoring and studies 1997 annual report and final assessment
Ecological Associates Inc pp 93
Moffatt & Nichol 2011 NC Beach and Inlet Management Plan — Final Report Prepared
for DCM April 2011
National Marine Fisheries Service and U S Fish and Wildlife Seance (2008) Recovery
Plan for the Northwest Atlantic Population of the Loggerhead Sea Turtle (Caretta
caretta) Second Revision National Marine Fisheries Service Silver Spring MD
A8

ATTACHMENT B
PERMIT SHEET DRAWINGS
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LOCATION MAP APPLICANT INFORMATION
ITX JOB NUMBETRI
TOWN OF HOLDEN BEACH 360 Co mrd Sbe t Suite 300 Hoiden Beach Nourishment ISSUE DATE 110 ROTHSCHILD STREET Ch desm SC29401 HOLDEN BEACH NC 28462 8434,4,040 Brunswick County North Carolina Certlfirate Muth nbwD 900359 SHEET NUM

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STA 40 +00 STA 56 +50
APPLICANT INFORMATION
TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
JOB NUMBER 08 1687
Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12 05 -2011
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TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
JOB NUMBER 08 1687
Hoiden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12-05-2011
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Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12 -05 2011
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Holden Beach Nourishment
Brunswick County North Carolina
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TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
JOB NUMBER 08 1687
Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 1205 -2011
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TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
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Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12 -05 -2011
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110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
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JOB NUMBER 08 1687
Holden Beach Nourishment
Brunswick County North Carolina
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Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12 -05 -2011
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STA 244 +00 STA 260 +00 APPLICANT INFORMATION
JOB NUMBER 08 1687
TOWN OF HOLDEN BEACH
350C pthrinib e no Hoiden Beach Nourishment ISSUE DATE 12 -05 2011 110 ROTHSCHILD STREET
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TOWN OF HOLDEN BEACH
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JOB NUMBER 081687
Holden Beach Nounshment
Brunswick County North Carolina
ISSUEDATE 12 -05.2011
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BORROW CUT
APPLICANT INFORMATION
TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 28462
JOB NUMBER 081687
Holden Beach Nounshment
Brunswick County North Carolina
ISSUEDATE 12 -05.2011
SHE 7 NUMBER. 18

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PROFILE VIEW
BORROW CUT C
APPLICANT INFORMATION
TOWN OF HOLDEN BEACH
110 ROTHSCHILD STREET
HOLDEN BEACH NC 26462
JOB NUMBER 081687
Holden Beach Nourishment
Brunswick County North Carolina
ISSUE DATE 12 -05.2011
SHEET NUMBER 20

ATTACHMENT C
BORROW AREA INFORMATION AND
SEDIMENT COMPATIBILITY
j-ir I Ar
f &(

Attachment C
Additional Information on the Offshore Borrow Area and Sediment
Criteria Compatibility
1 Data Collection
The Town of Holden Beach completed several offshore data collection events in order to identify
potential beach compatible sand borrow sources as presented in Table 1 below
Table 1 Borrow Area Data Collection and Analysis Studies
The above data collection studies built on prior reconniassance level surveys by the USACE
Wilmington District USGS and others as described in the Holden Beach Beach Management
Planning and Borrow Area Investigation (ATM 2009) Copies of the pertinent reports (b)
through (d) above are provided in Attachment D of this permit application package Other
studies /data can be provided upon request (see references at the end of this attachment)
3¢FE-r " <( f
C1
Event
Date
Description/Notes
Report
Reconnaissance
4 areas targeted in over
Offshore Seismic
a
Seismic Survey
Jan 2010
1 600 ac of offshore
Survey Study April
bottom
2010
Offshore Vibracore
b
Vibracores Phase I
Oct Nov 2010
19 vibracores collected
Analysis ATM Inc
January 2011
Magnetometer side
scan and multibeam
Remote Sensing and
bathymetry survey
Offshore Borrow Area
c
Borrow Area
May Jun 2011
additional sub -bottom
Investigation Phase
Refinement Survey
survey of 125 ac buffer
II July 2011
area in primary borrow
area
Geotechnical
Investigation for the
d
Vibracores Phase II
Aug 2011
11 vibracores collected
Town of Holden
Beach Phase II
Athena Technologies
Inc October 2011
The above data collection studies built on prior reconniassance level surveys by the USACE
Wilmington District USGS and others as described in the Holden Beach Beach Management
Planning and Borrow Area Investigation (ATM 2009) Copies of the pertinent reports (b)
through (d) above are provided in Attachment D of this permit application package Other
studies /data can be provided upon request (see references at the end of this attachment)
3¢FE-r " <( f
C1

2 Sediment Criteria Requirements for Offshore Borrow Areas
In general all of the data collected complies with DCM s 2008 sediment criteria standards (15A
NCAC 07H 0312 Technical Standards For Beach Fill Projects) Supporting data and analysis is
summarized below and in Attachment D _ Y
3 Natural and Cultural Resources Considerations
During the 2011 Offshore Borrow Area Investigation Phase II an evaluation of potential
hardbottom and submerged arcaheological resources was undertaken Side scan sonar multi
beam bathymetry and sub bottom data were collected and analyzed Additionally a manne
archaeological study was performed by Tidewater Atlantic Research (TAR) Results indicate
that no significant exposed hardbottom or archaeological features were found within the study
area In general the study area was composed of sandy material with gentle sand wave
geomorphology present
The limits of the hardbottom /natural resource investigation was significantly larger than the
borrow area due to the Division of Coastal Management (DCM) 500 m (1 640 ft) buffer
requirement As a result the hardbottom study area encompassed approximately 1 625 acres
including the proposed borrow area The complete TAR report is provided with report (c)
referenced in Section 1
4 Sediment Compatibility of Beach and Borrow Area
Sediment compatibility was assessed by methods outlined in the 2003 USACE Coastal
Engineering Manual (CEM) and DCM s sediment criteria standards via comparison of proposed
borrow area composited material to that of the native beach
Native Beach
In order to characterize the native beach sediments prior to beach nourishment projects which
commenced in earnest in 2001 2002 ATM utilized sand samples collected by the USACE
Wilmington District in 1998 These samples were utilized for the same purposes by ATM in
2001 associated with planning for the Town s first locally sponsored beach fill to extend the
C2

length of the USACE Section 933 Wilmington Harbor Deepening project in 2002 Samples
collected by the USACE included four (4) baseline stations along the island specifically Stations
40 +00 120 +00 180 +00 and 240 +00 These stations are spaced 6 000 8 000 ft apart and are
the best characterization of the pre engineered beach native condition Note that the proposed
project does not place sand east of Sta 40 +00 or west of Sta 260 +00 Sediment grab samples
were taken at the toe of dune berm crest MHW MTL MLW and at 2 ft vertical intervals from 2
ft to 24 ft depth Sample grain size statistics were averaged in a cross shore manner and then
alongshore to result in the following native beach composite
Table 2 Composvted native beach sediment characteristics from 1998 USACE sampling
Mean Sort
Composited
Average
Grain Size
ing
Percent
Fines
mm
Phi
%
024
072
20
I �-( d e /b
-t
19
�& E
Previous calculations for upland sand source projects (not for hydraulic placement) utilized
samples only to 12 ft depth For a larger hydraulically placed project as proposed the full
cross shore sampling is used Percent carbonate percent gravel and granular fractions are not
available from the 1998 USACE data However other sources (Moffatt &Nichol 2011 Rice
2003 Williams 2005) indicate average percentages of carbonate (2 7 %) and gravel (0 55 %) for
the Holden and Ocean Isle Beach vicinity
Offshore Borrow Area
The offshore borrow area indicated in the permit drawings has been delineated based on over
100 miles of seismic bathymetnc sidescan magnetometer remote sensing surveys completed
between 2010 and 2011 In addition a total of thirty two (32) vibracores (25 by the Town taken
to supplement 7 by the USACE) were collected within the limits of the borrow area to
characterize the existing sediments Vibracore spacing is approximately 1 000 ft or less
Although several potential offshore sites were initially investigated by the Town (ATM April
2010) the current site was deemed to be most suitable and practical from a sediment quality
and quantity perspective
The total volume of suitable material for beach fill in the borrow area is estimated at 3 337
million cubic yards Phase I vibracore analysis is reported in ATM January 2011
C3

Supplemental remote sensing is reported in ATM July 2011 An additional eleven (111,
vibracores were collected split logged and analyzed in August 2011 by Athena Technologies
Inc Between 1 and 3 sub samples of each vibracore were analyzed using standard ASTM
methods Athena s summary report (October 2011) Including core logs photos and grain size
curves are provided In Attachment D Figure 1 below presents an example vlbracore log and
analysis
0
DIPTN uZi CLASSIFICATION OF MATERIALS
RRl)
q
Oepth d I 6 d m gyred I
00 +
REC
X�
REMARKS
muai
Fine SAND trace carbonatelsi It well graded
a
very loose subround subangular olive gray
(5Y 412) (SW)
Sample #HB 19 i /Garb Depth = 4 0
Mean (mm) 0 29 Phi Sorting 100
Fines (230) 1070/ (SW)
m
Carbonate (0 4 ) 13 41Y
31
Silty fine SAND little carbonate well graded
loose few burrows @ 3 5 to 3 83 medium
SAND some silt, little carbonate, @ 5 4 to 5 7
N
coarse carbonate gravel @ 3 95 color grades
rn
Sample" 19-2 Depth = 5 4
to very dark greenish gray (10Y 311) from dark
Mean (mm) 0 44 Phi Sorting 166
gray (5Y 411) (SW SM)
=
Fines (230) 8 470/ (SW SM)
57
Silty fine SAND with fine carbonate gravel very
62 loose very dark greenish gray (10Y 311 GM
SILT very soft high water content @715
coarse carbonate fragment very dark greenish
72 gray (10Y 311) (MH)
Silty fine- medium SAND grading to medium
SAND well graded very loose interbedded
with silly medium SAND trace carbonate very
It k r
loose @ 7 58 organic debns @ 8 2 to 9 D
few silty medium SAND np-up clasts very dark
greenish gray (10Y 311) (Sw SM)
90
�
F R
i k 1°
Figure 1 Example boring log and analysis Typically 2 3 grain size sub samples were analyzed per
boring within the upper layer of suitable sand
The 2011 vibracores and seismic surveys were utilized to refine the borrow area limits and
resulted in a uniform recommended cut depth of 3 5 ft This upper layer of sediment is typically
fine to medium gray or tan sand The following figure presents a conservative estimate of sand
thickness for the proposed borrow site
C4

4 E� mill
k 1 �
rigure -e uonservanve nano rmcKness wirnin me orrsnore oorrow area oaseu on an oonngs ruler sanu
material generally underlies this layer while a --2 ft or larger buffer exists to the mud/hardbottom layer
The data were compiled and analyzed to arrive at a composite grain size to represent the
existing material in the borrow area This was accomplished via a volumetric weighting where
each core was assigned an influence area (acreage) and vertically composited to the cut depth
Composite sediment characteristics for the borrow area are provided in Table 3
Table 3 Composite sediment characteristics for the proposed 590 acre offshore bon-ow area assuming a
.35 rut depth
All of the above criteria (mean grain size % gravel % granular % fines and % carbonate) are
required according to DCM s 2008 sediment cntena Percent gravel essentially refers to large
C5
Mean
Sorting
Percent
Percent
Percent
Percent
Grain Size
(ph,)
Gravel
Granular
Fines
Carbonate
(mm)
Borrow
Area
035
126
2 1
3 4
5 0
12 4
Composite
All of the above criteria (mean grain size % gravel % granular % fines and % carbonate) are
required according to DCM s 2008 sediment cntena Percent gravel essentially refers to large
C5

shells or limestone (e g coquina) rock Percent granular essentially refers to shell hash
Percent carbonate also essentially tests for shell and shell material The presence of potential
mud balls (i a cohesive sediments) would be reflected in high percent fines
Based on the composite grain size characteristics of the borrow area the material meets the
sediment criteria requirements as shown in Table 4
Table 4 Summary of conformance of proposed project with DCM sediment compatibility criteria
5 Compabbibty and Overfill Ratio
In addition to confirmation that the composite borrow area sediment characteristics meet the
DCM sediment criteria as discussed above an evaluation of compatibility utilizing the well
known overfill ratio was completed The overfill ratio which is an indicator of borrow area
sediment compatibility provides an estimate of the additional volume of sand required to result
in the target quantity on the beach due to initial losses where the borrow area physical
characteristics are not identical to that of the native beach Overfill ratios were computed using
the Dean Method (Dean and Dalrymple 2002) and the Shore Protection Manual (SPM)
Adjusted Overfill Ratio in the ACES computer program Table 5 below presents these results
E
r
pp A
C6
Mean
Sorting
Gram Size
(phi)
Percent
Percent
Percent
Percent
(mm)
Gravel
Granular
Fines
Carbonate
Borrow
Area
035
126
2 1
3 4
5 0
12 4
Composite
Native
Beach
024
0 72
0 6
n/a
2 0
2 7
Composite
DCM
Sediment
Native +
Native +
Native +
Native +
Criteria
N/A
5%
5%
5%
15%
Threshold
5
5
7
177
Status
OK
OK
OK
OK —9
5 Compabbibty and Overfill Ratio
In addition to confirmation that the composite borrow area sediment characteristics meet the
DCM sediment criteria as discussed above an evaluation of compatibility utilizing the well
known overfill ratio was completed The overfill ratio which is an indicator of borrow area
sediment compatibility provides an estimate of the additional volume of sand required to result
in the target quantity on the beach due to initial losses where the borrow area physical
characteristics are not identical to that of the native beach Overfill ratios were computed using
the Dean Method (Dean and Dalrymple 2002) and the Shore Protection Manual (SPM)
Adjusted Overfill Ratio in the ACES computer program Table 5 below presents these results
E
r
pp A
C6

Table 5 Overfill Ratio Calculations for Holden Beach Nourishment with Offshore Borrow Source
An overfill ratio of 10 indicates a perfect match of the borrow sand to the existing beach sand
and similar behavior /performance under the effects of waves and currents would be expected
Overfill ratios between 1 0 and 15 are desirable Overfill ratios exceeding 1 5 means the
borrow material may be unstable when placed on the native beach In this case the composite
mean grain size of the borrow area slightly exceeds that of the native beach but the borrow
materials are more poorly sorted than the native beach resulting in an Adjusted SPM overfill
ratio of 109
Based on the analysis conducted the identified borrow source meets or exceeds the accepted
coastal engineering criteria for beach placement at the project site from both overfill ratio and
sediment characteristic perspectives Likely excavation by a hopper dredge will facilitate a
vertical mixing of the sediment prior to placement on the beach or a true composite of the upper
excavated layer
6 Potential Physical Impacts as a Result of Borrow Area Excavation
During construction the construction contract technical specifications will require the dredge
plant to maintain logs of position (via differential GPS) and depth of cut (based on a real time
tide readings) during all dredging operations The contractor will also be required to submit
these logs to the Town on a weekly basis Since pockets of undesirable material could be
encountered (due to inherent limitations of discrete core samples and seismic track lines) the
contract documents will require that the beach fill site be monitored continuously during active
dredging and any occurrence of undesirable material at the beach fill site result in immediate
shutdown notification of the Town and moving of the dredge to another portion of the borrow
area
�P
C7
Mean Grain
Sorting
Overfill Ratio
(mm)
M
Adjusted
SPM
Dean
Native Beach
024
0 72
Borrow
035
126
109
10
An overfill ratio of 10 indicates a perfect match of the borrow sand to the existing beach sand
and similar behavior /performance under the effects of waves and currents would be expected
Overfill ratios between 1 0 and 15 are desirable Overfill ratios exceeding 1 5 means the
borrow material may be unstable when placed on the native beach In this case the composite
mean grain size of the borrow area slightly exceeds that of the native beach but the borrow
materials are more poorly sorted than the native beach resulting in an Adjusted SPM overfill
ratio of 109
Based on the analysis conducted the identified borrow source meets or exceeds the accepted
coastal engineering criteria for beach placement at the project site from both overfill ratio and
sediment characteristic perspectives Likely excavation by a hopper dredge will facilitate a
vertical mixing of the sediment prior to placement on the beach or a true composite of the upper
excavated layer
6 Potential Physical Impacts as a Result of Borrow Area Excavation
During construction the construction contract technical specifications will require the dredge
plant to maintain logs of position (via differential GPS) and depth of cut (based on a real time
tide readings) during all dredging operations The contractor will also be required to submit
these logs to the Town on a weekly basis Since pockets of undesirable material could be
encountered (due to inherent limitations of discrete core samples and seismic track lines) the
contract documents will require that the beach fill site be monitored continuously during active
dredging and any occurrence of undesirable material at the beach fill site result in immediate
shutdown notification of the Town and moving of the dredge to another portion of the borrow
area
�P
C7

The contractor will also be required to mark the limits of the borrow area with buoys and
maintain such for the duration of the work Storage of equipment will be limited to the areas
surveyed as potential borrow areas as no hardbottom is located within these limits
Bathymetry surveys indicate a gradually sloping bottom moving from north to south within the
borrow area The proposed shallow cut will not create a significant depression as a result of
dredging Located a minimum of 1 8 miles from shore any refraction or redistribution of wave
energy is expected to be recovered before the affected waves arrive on shore
The USACE Wilmington Districts Dare County NC Hurricane Protection and Beach Erosion
Control project (2000) included a study to examine to effects on wave transformation and
shoreline change resulting from offshore dredging on a larger scale as part of an erosion control
program for Dare County Beaches The project included several offshore borrow sites from
which sediment could be extracted for beach nourishment projects for the next 50 years Wave
transformations were modeled using STWAVE and shoreline change as well as net and gross
longshore transport potentials were modeled using GENSIS along the project site Several
borrow sites encompassing 7 square miles of ocean floor were identified each between 0 5 and
2 miles off shore in water depths between 30 and 60 feet relative to MSL
Dredging depths were designed between 8 and 10 ft below the existing seabed Input wave
conditions were hindcast from a 20 year period between 1976 and 1995 from Wave Information
Studies (WIS) The wave transformations were performed over the projected fully excavated
borrow site conditions at the end of the 50 year project life The report states that dredging will
have minor impact on waves shoreward of the borrow sites The impacts do vary along the
extent of the project length where wave height is increased in some areas but decreased in
others relative to the non dredging scenario The magnitude of change in wave height ranged
from +3% to 5% which the authors describe as generally small Shoreline changes are
similarly reported as variable but generally small It is noted that the proposed borrow area for
Town of Holden Beach is within the same offshore locational range but has shallower cut depths
(and much smaller overall area) which would be anticipated to reduce potential adverse impacts
on wave propagation /transformation and resulting shoreline changes
The most similar nearby comparable project was the USACE s Grand Strand Storm Damage
Reduction Project in South Carolina in 2007/2008 Analysis of tl�e potential impacts of three
t
►, C8

offshore borrow sources was included in the Environmental Assessment (USACE SAD 2007)
The distance offshore water depths and dredging cut depth are all similar to that of the
proposed Holden Beach offshore borrow area (also note that both Holden Beach and Grand
Strand projects are within the larger Long Bay coastal segment which extends from Cape Fear
to Winyah Bay SC and thus wave conditions would be generally similar)
The USACE completed a literature review and applied the STWAVE model to predict pre and
post dredging wave climate at the borrow area and near shore Potential impacts based on
predicted changes in the nearshore wave climate were documented as minimal and stated the
following conclusion
All the significant physical qualities of the Myrtle borrow areas are within the ranges of
those study areas which were found to exhibit acceptable sand removal plans
For the proposed Holden Beach offshore borrow area physical impacts (i a wave
transformation and sediment transport) are expected to be minimal due to the distance from the
Long Beach /Oak Island shoreline (> 1 8 miles) and very shallow cut depth over a broad area
The relative cut depth to water depth ratio is under 10%
7 Potential Biological Resources Impacts as a Result of Borrow Area
Excavation and Beach Fill Placement
Previous studies and monitoring of biological resources were completed for the Wilmington
Harbor Deepening Project and the Section 933 Project (Versar 2004) The disposal of material
on the beach will have some short term negative impacts including the temporary increase in
turbidity during the disposal operation and the smothering or otherwise displacement of
organisms that live in or near the beach foreshore Turbidity caused by the disposal operation
normally does not persist more than one or two tidal cycles (12 to 24 hours) following the
cessation of the disposal operation With regard to the smothering or displacement of the
nearshore organisms studies by the University of Virginia for the U S Fish and Wildlife Service
on Pea Island have shown that the organisms generally return to the area in about one year
Assuming an average renounshment interval of 6 8 years typically the nearshore organisms
would not be completely eliminated from the area as a result of the disposal operation and
9 r C9

should recover within 1 2 years Similarly studies associated with the DeBordieu beach
nourishment project in SC (CEG 2009) as well as USACE studies in NJ (2001) indicate
relatively rapid recovery of the benthic communities within offshore borrow areas and the
intertidal /beach fill placement areas following construction
No exposed hardbottom was detected in either the proposed borrow area or the 500 m buffer
area (refer to TAR 2011)
8 References
Applied Technology and Management Inc (ATM) 2009 Holden Beach Beach Management
Planning and Borrow Area Investigation Charleston SC
Applied Technology and Management Inc (ATM) 2010 Holden Beach Offshore Seismic
Survey Study Charleston SC
Applied Technology and Management Inc (ATM) 2011 Holden Beach Offshore Vibracore
Analysis Charleston SC
Athena Technologies Inc 2010 Geotechnical Investigation for the Town of Hoiden Beach
Brunswick County North Carolina McClellanville SC
Athena Technologies Inc 2011 Geotechnical Investigation for the Town of Hoiden Beach
Phase II Brunswick County North Carolina McClellanville SC
Coastal Eco Group (CEG) 2009 DeBordieu Colony Beach Nourishment Project Debidue
Island SC Third Post Dredge Beach and Borrow Area Benthic
Macroinvertebrate /infauna monitoring report Prepared for DeBordieu Colony Permit No
2003 1W 309-PR
C &C Technologies 1999 Geophysical Subbottom profiling and mapping of offshore sediment
deposits hardbottom and top of rock Long Bay (Ocean Isle) NC Prepared for U S
Army Engineer District Wilmington NC
C &C Technologies 2003 Geophysical Subbottom profiling and mapping of offshore sediment
deposits and hardbottoms Offshore of Holden Beach and Oak Island NC Prepared for
U S Army Engineer District Wilmington NC
Moffatt & Nichol 2011 NC Beach and Inlet Management Plan — Final Report Prepared for
DCM April 2011
Rice 2003 Native Sediment Characteristics of North Carolina Beaches Report by Tracy
Monegan Rice U S Fish & Wildlife Service Raleigh NC July 2003
i'
C10

Thompson E F Lin L and Jones D L 1999 Wave Climate and Littoral Sediment Transport
Potential Cape Fear River Entrance and Smith Island to Ocean Isle Beach North
Carolina U S Army Corps of Engineers Engineer Research and Development Center
Technical Report CHL 99 18 Prepared for the U S Army Engineer District Wilmington
101 p
Tidewater Atlantic Research (TAR) 2011 A Phase I Remote Sensing Submerged Cultural
Resource and Hard Bottom Survey of a Proposed Borrow Area off Brunswick County
North Carolina Washington NC
US Army Corps of Engineers 2000 Final Feasibility Report and Environmental Impact
Statement on Hurricane Protection and Beach Erosion Control Dare County Beaches
(Bodie Island Portion) Dare County NC
US Army Corps of Engineers 2001 The New York Districts Biological Monitoring Program for
the Atlantic Coast of New Jersey Asbury Park to Manasquan Section Beach Erosion
Control Project Final Report Prepared by U S Army Corps of Engineers Waterways
Experiment Station Vicksburg MS
US Army Corps of Engineers 2007 Environmental Assessment for Grand Strand Storm
Damage Reduction Project North Myrtle Beach Myrtle Beach & Surfside Beach South
Carolina Horry & Georgetown Counties
USGS 2005 Geologic Framework Studies of South Carolinas Long Bay from Little River Inlet
to Winyah Bay 1999 2003 Geospatial Data Release US Geological Survey Open
File Report 2005 1346
Versar 2004 Year 2 Recovery from Impacts of Beach Nourishment on Surf Zone and
Nearshore Fish and Benthic Resources on Bald Head Island Caswell Beach Oak
Island and Holden Beach North Carolina Final Study Findings Prepared for USACE
Wilmington District under Contract No DACW54 -00 D 0001 by Versar Inc Columbia
Maryland January 2004
Williams G 2005 Presentation on Sediment Compatibility for Beach Nourishment in North
Carolina Tri Services Infrastructure Conference St Louis MO 3 August 2005
t4
C11

Holden Beach Offshore Borrow Area Volumetric Summary Cut Depth = 3 S ft
Core ID
Core Rep Volume
(cy)
Volume
Weighting
Factor
Mean Grain
Site (mm)
Sorting
(ph#)
Gravel
%
Granular
%
Fines (#230) %
Carbonate
%
HB 05
112 933
338%
030
103
09
18
37
152
HB 07
129 873
389%
022
090
04
11
48
109
HB 08
129 873
389%
056
142
41
so
43
202
HB 09
124 227
3 729
030
141
21
29
60
189
HB 10
118 580
3 55Y
030
147
17
51
70
121
HB 11
129 873
389%
038
140
19
46
58
126
HB 12
101 640
305%
029
101
06
26
39
105
HB 13
135 520
406%
035
122
17
25
29
it 8
HB 14
129 873
389%
056
186
63
90
106
184
HB 15
101640
305%
028
115
08
23
29
107
HB 16
124 227
372%
036
132
15
3 8
33
178
HB 17
90 347
271%
069
162
78
81
71
108
HB 18
141 167
423%
057
175
84
36
47
182
HB 19
146 813
440%
029
100
07
17
11
134
HB11 01
107287
321F
022
091
04
05
33
127
HB31 02
112 933
338%
027
116
25
18
37
95
HB11 03
112 933
338%
045
136
12
47
68
111
HB11 -04
155 283
465%
032
166
34
44
96
91
H811 05
149 637
448%
022
114
08
21
53
91
HB11 06
84 700
254%
027
100
04
13
14
115
H811 07
101640
305%
039
104
05
26
61
108
H811 -08
101640
305%
035
158
33
59
83
173
HB11 09
79 053
237%
033
119
08
35
28
130
HBil 10
95 993
288%
031
108
04
21
30
116
H811 12
56 467
169%
032
109
14
36
24
167
CBA 16
67 760
203%
023
052
00
06
16
30
BCB -03 V 65
56 467
169%
030
106
06
26
52
73
C8A 21
79 053
237%
047
096
20
28
is
70
BCB 03 4 83A
79 053
237%
027
157
32
40
92
63
BCB -03 V 38
73 407
220%
049
126
04
33
48
68
CBA 23
50 820
152%
021
105
11
29
68
55
BCB -03 V 64
56 467
169%
021
123
13
32
97
86
Gross A erage 035 123 20 33 50 118
Total Volume 3337180
We gh[ecfAVerage v- 0 35 -2 1 Z6 2 1 3A S0- v 12A
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