HomeMy WebLinkAbout20140940 Ver 2_CAMA Application_20141007Pat McCrory
Governor
Natural Resources
John E Skvarla, III
Secretary
October 3, 2014
Division of Coastal Management
MEMORANDUM- , . OCT 0 7 2014
TO: Karen Higgins °-
,
401 Oversight
DEMLR - Surface Water Protection
FROM: Jonathan Howell, NC DENR -DCM Assistant Mayor Permits Coordinator
400 Commerce Avenue, Morehead City, NC 28557 (Courier 11- 12 -09)
SUBJECT: CAMA / Dredge & Fill Application Review
Applicant: Town of North Topsail Beach
Modified Phase 1 Emergency Sandbag Revetment
Project Location: along the oceanfront beach from 2276 to 2382 New River Inlet Dnve,
adjacent to the Atlantic Ocean, in North Topsail Beach, Onslow County
Proposed Project: to install a large sandbag revetment ( +/ -1500 linear ft.) to protect the
residential structures located along the north end of Topsail Island
Please indicate below your agency's position or viewpoint on the proposed project and
return this form to Jonathan Howell at the address above by October 29, 2014,
If you have any questions regarding the proposed project, contact Jason Dail at (910)796 -7221
when appropriate, in depth comments with supporting data is requested.
REPLY:
SIGNED
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
DATE
N C Division of Coastal Management
127 Cardinal Drive Ext , Wilmington, NC 28405
Phone 910-796-7215 1 FAX 910 -395 -3964 Internet www nccoastalmanagement net
An Equal Opportunity \ Affirmative Action Employer
DIVISION OF COAS'T'AL MANAGEMENT
FIELD INVESTIGA'T'ION REPORT
APPLICANT'S NAME Town of North Topsail Beach — "Phase I Emergency Sandbag Revetment" - Modified
2. LOCATION OF PROJECT SITE The project site is located along the oceanfront beach from 2276 to 2382
New River Inlet Drive, adjacent to the Atlantic Ocean, in North Topsail Beach, Onslow County.
Photo Index — 2006: 28- (6497) Oceanfront & Inlet
2000: 28- (391). Oceanfront & Inlet
1995: 28- (379). Oceanfront & Inlet
State Plane Coordinates — GPS File: P111811B X 2449610 Y.256997
Lat.: 34°31'29.15 "N Long: 77 °20'47 98 "W
3. INVESTIGATION TYPE: CAMA / D &F
INVESTIGATIVE PROCEDURE: Dates of Site Visit — Multiple visits between Jan 2013 and September 2014
Was Applicant Present — Yes
PROCESSING PROCEDURE. Application Received — Complete 10/3/14 (with exceptions)
Office — Wilmington
6 SITE DESCRIPTION:
N/A
(A)
Local Land Use Plan — Town of North
Topsail Beach
N/A
Classification From LUP — No Classification / Developed
(B)
AEC(s) Involved: OH, IH
(C)
Water Dependent- Yes
(C) Other (Highground)
(D)
Intended Use. Private /Government
—5 0 acres
(E)
Wastewater Treatment: Existing —
Municipal Sewer
(217,800 sq ft.,
Planned -
N/A
(F)
Type of Structures- Existing —
Commercial and Residential structures and access -ways
Planned —
Sand bag revetment
(G)
Estimated Annual Rate of Erosion
2' /year Source — LTAASCR 2011 Update
7. HABITAT DESCRIPTION
[AREA]
DREDGED FILLED OTHER
(A) Vegetated Wetlands (coastal)
N/A
N/A
N/A
(B) Non - Vegetated Wetlands - open
N/A
2,300 sq. ft. (sand bags
N/A
water
placed on beach)
(C) Other (Highground)
N/A
65,200 sq ft. (sand
—5 0 acres
bags placed on beach)
(217,800 sq ft.,
*N /A — Not applicable
sand removed
from spit)
(D) Total Area Disturbed 6 54 acres (285,300 sq ft.)
(E) Primary Nursery Area: No
(F) Water Classification- SA Open: NO
8. PROJECT SUMMARY The applicant is proposing to install a large sandbag revetment from 2276 to 2382 New
River Inlet Road ( +/- 1,500 linear feet), to protect the residential structures located along the north end of Topsail Island
North Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED
Page Two
9. PROTECT DESCRIPTION:
This CAMA major permit application is a modified version of the CAMA major permit application that
was submitted in August 2014 and circulated on, or around August 28, 2014, for the installation of a
revetment structure (i.e. "Geo- tube ") along the northern end of North Topsail Beach. The information
presented in this application package still includes the installation of a sand bag revetment in the same
general area as the "Geo- tube" project; however, this proposal includes the installation of traditional
sand bags, in lieu of the large Geo - tube(s). The relative information of the new project is described below.
The project site is located in North Topsail Beach, specifically between 2276 and 2382 New River Inlet Road,
adjacent to the Atlantic Ocean, in Onslow County. To get to the site from Wilmington take US HWY 17 N to
NC Hwy 210, which is located at the Lowe's Home Improvement on US HWY 17. Turn right onto NC Hwy
210 and continue across the Surf City Swing Bridge. Take a left at the first street N. New River Drive (NC Hwy
210). Continue on NC Hwy 210 until you reach the New River Inlet Road (approximately 8.1 Smiles) Turn
right onto New River Inlet Road and continue to the far end. Turn left at the stop sign and the project area will
be located on the right hand side of the road, just north of the Topsail Reef Condominium complex The project
area would span from the north side of the Topsail Reef Condos, north to the property identified by the Onslow
County Tax office as 23 82 New River Inlet Road. The current elevation of the project area ranges from
approximately 6' NAVD to approximately 8' NAVD. The project site is adjacent to commercial (condos) and
residential properties. The project site is bordered by New River Inlet to the north, the Atlantic Ocean to the
East and commercial and residential properties to the south and west The high ground portion of the property is
primarily un- vegetated with the exception of lawn grasses and ornamental landscaping around the existing
homes.
The Annual erosion rate in the project area is 2' /year per the Division of Coastal Management's 2011 Annual
Erosion Rate maps. Currently, the Town's proposal is to install a large sandbag revetment to protect the 20 or so
homes located north of the Topsail Reef Condominium complex. This particular area of North Topsail Beach
has experienced "accelerated erosion" within the past 12 -15 months and the shoreline is progressively receding
Of the 20 or so properties included in this permit request, roughly 15 are considered "imminently threated ", or
have an erosion escarpment within twenty (20) feet of the foundation of the structure(s).
The Town of North Topsail Beach currently has an active CAMA Permit (No. 79-10) that authorizes sand
deposition along the entire ocean front area of North Topsail Beach. The material used for this project includes
excavated material from the New River Inlet Channel Re- alignment project, as well as excavation from a near-
shore borrow site. To date, the Town has completed Phase I of the shoreline stabilization/channel re- alignment
project, which happens to include the area for which the applicant is requesting the sandbag revetment. Permit
No. 79 -10 was originally issued on July 21, 2010, and later amended on June 20, 2014. The permit is scheduled
to expire on June 12, 2015. Plans are underway to begin completion of Phases V of the shoreline stabilization
project once the moratoriums are lifted for turtle nesting (i.e November 15th)
The Town of North Topsail Beach Land Use Plan does not have a "dry sand beach" classification: However; the
upland areas of this project are classified as Developed. 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 New
River / Atlantic Ocean as a Primary Nursery Area, and the waters adjacent to the proposed project are CLOSED
to the harvesting of shellfish.
North 'Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED
Page 'Three
PROPOSED PROJECT:
The applicant is proposing to install approximately 1,500 linear feet of oversized sand bags from roughly 2276
New River Inlet Road to 2382 New River Inlet Road. As proposed, the sand bag revetment would adjoin, or
abut, the existing temporary erosion control structure(s) located along the eastern side of Topsail Reef
Condominiums and would span north, terminating at 2382 New River Inlet Road (owned by the Town of North
Topsail Beach). As designed, the sand bag revetment would consist of multiple bag layers, with a base width of
45' and a crest height of 12' NAVD The proposed sand bag structure would be similar to the existing oversized
sand bag revetment located adjacent to the project site, at Topsail Reef, Buildings 1 -5.
As described, traditional sandbags (i.e. each tan in color, 3' -5' in width and 7' -15' in length) would be installed
along 1,500 linear feet of beach. The sand bags would abut a majority of existing homes in the area, however
there are several properties just north of Topsail Reef where the bags would extend oceanward/seaward of the
structures approximately 20' -30'. Along these 5 -6 homes, the landward side of the proposed sandbags would be
located a distance of 20' -30' away from the foundation of these structures It is believed the intent of this
orientation is to create a uniform alignment (i.e. straight line) so that the proposed bags would connect directly
to the existing sand bags located at Topsail Reef As proposed, the sand bags would be installed parallel to the
shoreline, along the seaward side of the existing homes /dwellings. The sand bags would be placed atop a scour
apron that would span the entire length of the project. As stated by the applicant, the sand bag revetment would
be for protection of the aforementioned structures, and not for the creation of any new dune, or dune core.
Information provided by the applicant's agent (Coastal Planning and Engineering, a.k a CP &E) indicates that a
mean high water boundary survey was performed in the vicinity of the proposed project under a contract with
Bearing Point Consulting, on August 29, 2014. Based on data collected from the August 29, 2014 survey, it
appears the proposed sand bag revetment (seaward toe of eastern most bags) would be placed along an
alignment that would extend no more than approximately 7 1' below the mean high water line. However, it
appears that additional erosion has taken place in the project area since the August 29, 2014 survey, thereby
creating a larger footprint for sand bag placement below the mean high water level. Nevertheless, the applicant
has accounted for approximately 2,300 sq. ft. of impacts below the mean high water line and approximately
65,200 sq. ft. of impacts above the mean high water line as a result of the installation of the proposed sand bag
revetment. These numbers will likely change again prior to initiation of the project due to the tidal fluctuations
and wind/wave energy in the immediate vicinity of the project.
According to the application package, site drawings and project narrative, the applicant intends to fill the sand
bags with sand currently held in storage from an area north of the project site, labeled and referred to as the
"spit ". The spit is a broad, relatively flat, dry sand beach area that is located along the far northeast section of
the island. The area is generally undisturbed, with the exception of foot traffic, and vegetation is beginning to
propagate throughout. The elevation of the spit is roughly 2' -4' above the normal high water level, with a slight
depression in the center. In total, the spit consists of approximately 5.0 acres of what the Town considers
premium sand for shoreline protection immediately adjacent to the referenced properties. As designed, the
applicant would remove approximately 12 " -15" (top layer) from the spit, or approximately 10,000 cubic yards,
which is what the applicant's engineer estimate is needed for the sand bags. In addition, the applicant proposes
to haul in, or truck in the remaining 7,000 cubic yards of sand bag fill material from an off -site source. Any fill
material trucked in and placed in the bags should be clean, compatible material of similar size, color and shape.
North Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED
Page Four
As planned, the construction methodology would proceed as follows: The Town, or its contractor, would use an
excavator and/or front end loader to remove the required amount of material from the spit. Once loaded, the dry
sand would be placed in a "hopper" where it would be mixed with seawater (pumped from the surf zone into the
hopper) to create a "slurry". From there, the slurry would be pumped into the bags. As I understand the process,
the hopper would move up and down the beach, in conjunction with the filling of the bags. In addition, the sand
trucked in from the off -site borrow source would be added to the hopper and mixed together, just as the material
collected from the spit.
Based on historical documentation (i.e. DCM files), it appears the applicant's proposal would result in a sand
bag revetment over /atop existing temporary erosion control structures. Our records indicate that several homes
in the vicinity of the project site received sand bag permits and actually installed sandbags at these properties
back in the 1990's. Some of the sand bags still remain intact and were visible prior to the deposition of sand
associated with the shoreline stabilization/channel re- alignment project
10. ANTICIPATED IMPACTS
The applicant's proposal to remove sand from the "spit" would result in the disturbance of approximately 5.0
acres of dry sand beach, from which approximately 10,000 cubic yards of material would be removed. The
excavated material would be pumped into a 1,500 linear .foot section of sand bags measuring approximately 45'
in base width and up to a height of 12' NAVD. Approximately 2,300 sq. ft. (7' x 1,500') of material would be
placed at or below the normal high water level, while approximately 65,200 sq. ft. would be placed above the
elevation of normal high water. The applicant has provided a copy of the oceanside easement agreement for this
project (as it corresponds to the shoreline protection project) and it appears the scope of the work is consistent
with the intent of the easement agreement. Impacts to the "spit" area, as a result of project completion, are
uncertain and unknown at this time. Increases in turbidity should be expected during the project; however, they
should dissipate once the project is complete.
Submitted by: Jason Dail Date: October 3, 2014 Office: Wilmington
x. t
i r off:
n � �
The Town of North Topsail Beach completed Phase 1 of its multifaceted inlet and
shoreline management plan in February 2013 with the repositioning of the New River
Inlet ocean bar channel to a more central location between the south end of Onslow
Beach and the north end of North Topsail Beach. The material removed during
repositioning of the channel was used to construct a beach fill along 7,730 feet of
shoreline south of New River Inlet.
The condition of the north end of North Topsail Beach prior to construction of the Phase
1 beach fill project is shown in Photo 1 with the condition immediately after construction
provided in Photo 2.
Photo 1. Pre - Nourishment — November 2012. The eight buildings in the upper left of the photo are
the Topsail Reef Condominiums.
10
-, E I V E D
E P 21 e X014
Photo 2. Post - Nourishment — February 2013.
The ocean bar channel of New River Inlet was moved for the purpose of inducing sand
accumulation on the south side of the inlet's ebb tide delta. Based on the documented
historic behavior of the inlet, moving the channel to a more central position with an
alignment approximately perpendicular to the adjacent shorelines would result in
accretion of the shoreline south of the inlet. The time required for the new channel to
have a positive impact on the shoreline was estimated to be at least 5 years.
Monitoring of the inlet has demonstrated some of the expected results are taking place
with sand accumulating on the south side of the inlet, however, the rate of build -up, as
predicted, has been relatively slow. As a result, the north end of North Topsail Beach has
continued to experience high rates of erosion As of August 2014, most of the fill placed
north of the Topsail Reef Condominiums has been lost as shown in Photo 3 to Photo 5.
The beach profiles taken at baseline stations 1150 +00 and 1155 +00, located north of the
Topsail Reef Condominium (Figure 1), in April 2012 immediately after completion of the
Phase 1 beach fill and approximately one year later in May 2014 are provided in Figures
2 and 3, respectively. The minimum distance between the front of the residences north of
Topsail Reef and mean high water ( +1.4 feet NAVD) is approximately 65 feet. The
average distance between mean high water ( +1.4 feet NAVD) and the front of the five
residences located north of Topsail Reef was about 217 feet while the distance from mean
high water to the front of the next five residences north of baseline station 1155 +00
averaged 137 feet. Obviously, these distances do not conform to the imminently threated
HL
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I NC
SE 2 6' 2014
definition used by DCM to determine when structures are eligible for temporary
protection. However, when the rate of shoreline recession over the approximate one -year
post - construction period in taken into account, the continuation of these measured
recession rates will ultimately result in all 10 of these home becoming imminently
threaten, as defined by DCM, in less than a year. The same holds true for the northern 10
residences. As the shoreline continues to encroach closer to the residences, installation of
emergency structures will become increasingly difficult due to having to work in the
active surf zone. This could limit construction to times of low water along some sections
of the project area.
The condition on the north end of the island has continued to deteriorate as demonstrated
by Photo 3a which was taken on September 14, 2014. As is evident in Photo 3a, the final
remnants of the artificial dune included with the Phase 1 project, which were evident in
the August 7, 2014 photo of the area provided in Photo No. 3, has been completely
removed.
In addition to the threat to the homes, flooding of the area has been exasperated (Photo 6)
with flood waters spilling on to New River Inlet Road and side streets during times of
high tide.
Photo No. 3. View looking north of Topsail Reef Building #1— August 7, 2014. Arrow identifies
house shown in Photo No. 4.
12
DCM WILMMGTON, NC
SEP2F2011r
Figure 1. Baseline stations.
Figure 2. Station 1150 +00 showing post- construction profile (May 2012) and April 2014 profile
15
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April 2014 Profile at baseline station 1150+00 showing malamum,
€
minimum, and average distance from mean high water ( +1.4 ft NAVD) to
10
front of first five residences north of Topsail Reef Condos
i
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z
Ave =
117 Met
(�1150+OD=- 196ft/yr(May 2013to Apr 2014)
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an
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I
-in
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4
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100 150 1W 50 0 `_U 1W 150 1W 15U 1W JW 4W 4517 5W 550 EW b50 /W /a0 8W 85U 90L)
Distance from 11125e)Ine (ft)
-Ata 1411jorle 115U+UU
-MJX kmdward puslUUn or buiWiE!
-Aw_ posmon of first five buildings north of 1 opsall Reef to sta 111034ku
-Min landward poedlon of building
- -- 2o11 Post Construction 1150+00
Figure 2. Station 1150 +00 showing post- construction profile (May 2012) and April 2014 profile
15
t`1F�t `If1 ll JiI ?G ?U��, NC
SE° 2014
RECEIVED
'%CM UV r LI M J N G T O N
Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile.
The overall management plan for New River Inlet and the shoreline of North Topsail
Beach allows for the periodic maintenance of the ocean bar channel in order to keep the
channel in its preferred position and alignment. Material removed to maintain the
channel is to be used to provide periodic nourishment of the North Topsail Beach
shoreline including the shoreline nourished during Phase 1.
The conditions of the permits issued for the project only allows maintenance of the
channel to be accomplished every four years providing one of two channel maintenance
thresholds are met. One channel threshold is associated with shoaling of the channel
while the second is based on the position and alignment of the channel. With the initial
project being completed in February 2013, the Town of North Topsail Beach is not
permitted to maintain the channel until at least the 2016/2017 environmental dredge
window. Given the present condition of the shoreline, the Town of North Topsail Beach
needs to take immediate emergency measures in order to prevent the loss of the 20
threatened residential structures between now and the time it is permitted to maintain the
channel.
The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which
is limited to a height of 6 feet above the existing ground and a maximum bottom width of
20 feet, is not adequate to provide the degree of protection deemed necessary to protect
the 20 residential structures for a minimum of 2 years. This is evident by the history of
failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7.
Furthermore, the Topsail Reefs HOA located just south of the proposed project area
constructed a revetment similar to that being proposed in this application (Photo 8). This
M
SAP 9, 6 26 14
Is
April 2014 Profile at baseline station 1155+00 showing maximum,
0 m
minimum, and average distance from mean high water (f1A ft NAVD)
� ^moo t
to front of five residences north of station i150+D0
t0
Average Rate of Shoreline Recession
A A
s
` @
@ 1155 t00 =- 246 41 /yr(May 2013ta Apr 2014}
g
Oq,
Z
Z
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u
w
♦
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O
♦ o�
-5
-to
_LS
-200 -100 0 100 200 300 400 500 600 700 800 900 1000 U00 1200 1300
019maa from R=aga (ft)
-Apr-14 Pronle -sta 1155+00
-Aw position affiee buildings north of 100+00
-Max landward positan of buildings
- Minlandvrard poshfoi arbilldings
- -- 2M Post�nstrurban - 1155+00
RECEIVED
'%CM UV r LI M J N G T O N
Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile.
The overall management plan for New River Inlet and the shoreline of North Topsail
Beach allows for the periodic maintenance of the ocean bar channel in order to keep the
channel in its preferred position and alignment. Material removed to maintain the
channel is to be used to provide periodic nourishment of the North Topsail Beach
shoreline including the shoreline nourished during Phase 1.
The conditions of the permits issued for the project only allows maintenance of the
channel to be accomplished every four years providing one of two channel maintenance
thresholds are met. One channel threshold is associated with shoaling of the channel
while the second is based on the position and alignment of the channel. With the initial
project being completed in February 2013, the Town of North Topsail Beach is not
permitted to maintain the channel until at least the 2016/2017 environmental dredge
window. Given the present condition of the shoreline, the Town of North Topsail Beach
needs to take immediate emergency measures in order to prevent the loss of the 20
threatened residential structures between now and the time it is permitted to maintain the
channel.
The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which
is limited to a height of 6 feet above the existing ground and a maximum bottom width of
20 feet, is not adequate to provide the degree of protection deemed necessary to protect
the 20 residential structures for a minimum of 2 years. This is evident by the history of
failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7.
Furthermore, the Topsail Reefs HOA located just south of the proposed project area
constructed a revetment similar to that being proposed in this application (Photo 8). This
M
SAP 9, 6 26 14
April 2014 Profile at baseline station 1155+00 showing maximum,
0 m
minimum, and average distance from mean high water (f1A ft NAVD)
� ^moo t
to front of five residences north of station i150+D0
Average Rate of Shoreline Recession
A A
` @
@ 1155 t00 =- 246 41 /yr(May 2013ta Apr 2014}
Oq,
w
♦
O
♦ o�
Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile.
The overall management plan for New River Inlet and the shoreline of North Topsail
Beach allows for the periodic maintenance of the ocean bar channel in order to keep the
channel in its preferred position and alignment. Material removed to maintain the
channel is to be used to provide periodic nourishment of the North Topsail Beach
shoreline including the shoreline nourished during Phase 1.
The conditions of the permits issued for the project only allows maintenance of the
channel to be accomplished every four years providing one of two channel maintenance
thresholds are met. One channel threshold is associated with shoaling of the channel
while the second is based on the position and alignment of the channel. With the initial
project being completed in February 2013, the Town of North Topsail Beach is not
permitted to maintain the channel until at least the 2016/2017 environmental dredge
window. Given the present condition of the shoreline, the Town of North Topsail Beach
needs to take immediate emergency measures in order to prevent the loss of the 20
threatened residential structures between now and the time it is permitted to maintain the
channel.
The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which
is limited to a height of 6 feet above the existing ground and a maximum bottom width of
20 feet, is not adequate to provide the degree of protection deemed necessary to protect
the 20 residential structures for a minimum of 2 years. This is evident by the history of
failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7.
Furthermore, the Topsail Reefs HOA located just south of the proposed project area
constructed a revetment similar to that being proposed in this application (Photo 8). This
M
SAP 9, 6 26 14
structure has performed well thus far, which lends itself to the construction of a similar
structure along the northernmost section of Phase 1 where erosion has been the most
severe. Therefore, the Town of North Topsail Beach has elected to install a sand bag
structure to achieve an elevation of 12.0 ft. NAVD.
A plan view of the sand bag revetment is provided on Sheet 2 of 3 (Figures A and B) and
a typical cross - section view of proposed revetment is shown on Sheet 3 of 3 in the
Attachments.
The proposed sand bag would begin at the existing "super- sized" sandbag revetment at
Building #1 of the Topsail Reef Condominium and extend 1,450 feet parallel to the
existing shoreline. A 50 -foot return wall would extend landward from the north end of
the sand bag structure just north of the home located at 2378 New River Inlet Road.
A schematic of the tie -in of the proposed sandbag revetment with the existing Topsail
Reef revetment is shown if Figure 4. As indicated in Figure 4 shown in the plan view on
Sheet 2 of 3 in the Attachments, outer toe of the proposed sandbag revetment would
correspond approximately to the position of the seaward toe of the existing Topsail Reef
revetment with the alignment of the proposed sandbag revetment gradually transitioning
landward for a distance of about 200 feet. From the end of the transition north to the
northern most residential structure, the proposed sandbag revetment would follow an
alignment roughly parallel to the seaward most support piles of the threatened residential
structures with the landward toe of the revetment positioned as close as practical to the
front support piles of the structures. The gradual transition between the Topsail Reef
revetment and the proposed sandbag revetment should reduce the concentration of wave
energy associated with an approximate 90° change in the alignment of the sandbags and
thus reduce the potential for scour at the seaward toe of the bags at that point.
Figure 4. Schematic of tie -in of proposed sandbag revetment to the existing Topsail Reef sandbag
revetment.
17
R E _"'EIVE:
DCM Wii.��ING- 1 ON, N(
SEP 2 6 2014
127 Cardinal Drive Ext , Wilmington, NC 28405
Phone 910 - 796 -7215 \ FAX 910 - 395 -3964 Internet www nccoastalmanagement net
DOE NP-1
g �'. � � cyl�` � NaI* '-�?' aye .w' �: �F I�• �1 �S 7. � n �.�. s � a, f F' � � � a
(last revised 12/27106)
North Carolina DIVISION OF COASTAL MANAGEMENT
9. Primary Applicant/ Landowner Information
Business Name
Project Name (if applicable)
Town of North Topsail Beach
Phase 1 Emergency Sandbag Revetment
Applicant 1 First Name
MI
Last Name
Stuart
Agent/ Contractor 1 First Name
Turdle
Applicant 2 First Name
MI
Last Name
N/A
N/A
N/A
If additional applicants, please attach an additional page(s) with names listed
Mailing Address
PO Box
City
State
2008 Loggerhead Court
N/A
North Topsail Beach
NC
ZIP
Country
Phone No
FAX No
28460
Onslow
910 - 328 -1349 ext NA
N/A
Street Address (If different from above)
City
State
ZIP
N/A
N/A
N/A
N /A-
Email
townma nag er @north- topsad-beach org
2.` Agent/Contractorinforination
,
Business Name
Coastal Planning & Engineering of NC, PC
Agent/ Contractor 1 First Name
MI
Last Name
James
T
Jarrett
Agent/ Contractor 2 First Name
MI
Last Name
N/A
N/A
N/A
Mailing Address
PO Box
City
State
4038 Masonboro Loop Rd
N/A
Wilmington
NC
ZIP
Phone No 1
Phone No 2
28409
910- 791 -9494 ext N/A
910 - 264 -2166 ext N/A
FAX No
North Carolina Professional Engineering License
910 - 791 -4129
005545
Street Address (if different from above)
City
State
ZIP
N/A
N/A
N/A
N/A -
Emad
James Jarrett @cbi com
INC
3. Project Location
County (can be multiple)
Street Address
State
Rd #
Onslow
New River Inlet Rd
N/A
Subdivision Name
City
State
Zip
N/A
Town of North Topsail Beach
NC
28460
Phone No
Lot No (s) (if many, attach additional page with
Est)
910 - 328 -1349 ext N/A
N /A,
a In which NC river basin is the project located?
b Name of body of water nearest to proposed
White Oak River Basin
project
No native dune grasses are present seaward of the erosion scarp line due to continuing erosion issues and past efforts
New River Inlet and Atlantic Ocean
c Is the water body identified in (b) above, natural or manmade?
d Name the closest major water body to the
RNatural ❑Manmade ❑Unknown
proposed project site
grass (Photo Nos 3 to 5 in the attached Project Narrative)
New River Inlet and Atlantic Ocean
e Is proposed work within city limits or planning jurisdiction?
f If applicable, list the planning jurisdiction or city
RYes ❑No
limit the proposed work falls within
New River Inlet Road is located immediately landward of the homes The residential structures serve as both permanent
Town of North Topsail Beach
4. Site Description =
a
Total length of shoreline on the tract (ft )
b Size of entire tract (sq ft )
Approximately 1,450 feet
198,200 sq ft (4 55 ac)
c
Size of individual lot(s)
d Approximate elevation of tract above NHW
N /A,
(normal high water) or NWL (normal water
(If many lot sizes, please attach additional page with a list)
level)
approximately +2 to +6 ft above NHW or
roughtly +4 to +8 ft NAVD88
e
Vegetation on tract
No native dune grasses are present seaward of the erosion scarp line due to continuing erosion issues and past efforts
associated with Phase 1 of the beach management project Sand fencing and dune vegetation were installed on the
artificial dune Included in the beach fill design but the continuing erosion has destroyed almost all of the fencing and
grass (Photo Nos 3 to 5 in the attached Project Narrative)
f
Man -made features and uses now on tract
There are currently 20 residential structures located along the ocean shoreline north of the Topsail Reef Condominiums
New River Inlet Road is located immediately landward of the homes The residential structures serve as both permanent
residences and rental properties
g
Identify and describe the existing land uses adjacent to the proposed project site
The property immediately south of the proposed sand tube Installation is occupied by the Topsail Reef Condominiums
To the north, the area is undeveloped and bounded by New River inlet The Topsail Reef Condominiums are protected
by a sandbag revetment installed In 2012
h
How does local government zone the tract?
i Is the proposed project consistent with the
R -1 Residential
applicable zoning?
(Attach zoning compliance certificate, if applicable)
®Yes ❑No DNA
j
Is the proposed activity part of an urban waterfront redevelopment proposal? ❑Yes RNo
k
Hasa professional archaeological assessment been done for the tract? If yes, attach a copy NA
�t0 M Oil �s`ii;AIii t 01N Ititi
I Is the proposed project located in a National Registered Historic District or does it involve a
❑Yes
®No ❑
National Register listed or eligible property?
NA
m (i) Are there wetlands on the site?
❑Yes
®No
(u) Are there coastal wetlands on the site?
❑Yes
®No
(m) If yes to either (i) or (u) above, has a delineation been conducted?
❑Yes
❑No
(Attach documentation, If available)
n Describe existing wastewater treatment facilities
N/A
o Describe existing drinking water supply source
N/A
p Describe existing storm water management or treatment systems
N/A
5. Activities and Impacts,
a Will the project be for commercial, public, or private uses ❑Commercial
❑Public /Government
®Private /Community
b Give a brief description of purpose, use, and daily operations of the project when complete
The sand bag revetment will provide temporary erosion protection for 20 residential structures north of the Topsail Reef
Condominiums and some flood protection to a portion of New River Inlet Road north of Port Drive Flooding in this area
is occurring during normal spring high tides due to wave over washing the beach (Photo No 6 in the Attached Project
Narrative) A vicinity map, general layout of the proposed sand bag structure, and a typical cross - section of the
revetment is provided on Sheets 1 of 3 to 3 of 3 in the Attachments
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
In order to achieve a design elevation of approximately +12 feet NAVD, the revetment will be built on top of the existing
grade at the time of construction in a stacked configuration of sand bags The material needed to fill the sand bags will
be removed from the sand "spit" shown in Exhibit 1 in the Attachments and transported via dump trucks to designated
locations where a hopper, or large container, will be stationed This sand will be supplemented with material from an off -
island borrow area as needed The hopper and associated pumps and filling equipment will be stationed within the area
to be disturbed as identified in Figure B on Sheet 2 of 3 in the Attachments As the sand bags are filled the hopper and
associated pumps used to create the slurry within the hopper will be moved Multiple sand bags can be filled from one
hopper location, however, it is anticipated that the hopper and pumps will need to be moved as the work progresses The
sand from the borrow site will be placed into the hopper A pump will be used to draw water from the ocean and
discharge it into the hopper The sand /water "slurry" in the hopper will then be pumped into the sand bags No open "pit"
will be created as all of the pumping will be contained within the hopper and discharged into the sand bags Prior to
filling the bags, bulldozers and frontend loaders will be used to grade the area prior to placement of the sand bags and
will maneuver the sand bags into position All work will be performed above the NHW line A temporary berm will be
formed on the seaward side of the work area and will provide a buffer from wave action The existing material within the
footprint of where the sand bags will be placed will be used to create the berm The temporary berm will also inhibit any
direct discharge of water from the work area back into the ocean The bulldozer will be on standby during sand bag
placement and once the bags have been filled will be used to flatten out the temporary berm and final dress the area
d List all development activities you propose
The single purpose of the project is to install the temporary sand bag revetment in the area fronting the 20 residential
structures north of the Topsail Reef Condominiums
,EC, =I�i ar l
Ji "V! `r']I;J i1,� \l
ji-j a 9"M.
e Are the proposed activities maintenance of an existing project, new work, or both?
New Work
A total of 15 sandbag structures have been installed along the north end of North Topsail
Beach north of Topsail Reef Due to the erosion this area has experienced in recent years,
only three of the 15 sandbag structures that have been installed are currently in place in front
of existing residences The remainder of the standard size sandbag structures permitted in
this area (3 -2 -1 stacked structure) have either been removed or were installed at residential
structures that were seaward of the current row of oceanfront homes and no longer exist
Although there have been sandbag structures installed in this area in the past, 17 of the 20
residences proposed to be protected by the emergency sand bag revetment do not have
sandbag structures installed in front of them The three remaining sandbag revetments,
located at 2332, 2334, and 2368 New River Inlet Rd (State Rd 1568) have been buried and
are not presently visible as discussed in the attached Protect Narrative
f What is the approximate total disturbed land area resulting from the proposed protect?
Approximately 8 6
The sand bag revetment would cover approximately 1,450 linear feet of ocean shoreline with
❑Sq Ft or ®Acres
a 50 -foot wingwall or tieback on the north end (Sheet 2 of 3 in the Attachments) Installation
will disturb an area about 60 feet wide resulting in a total disturbed area of approximately 2 2
acres Construction activities landward of the sand bags, i e placement and filling of hopper
between the existing residences and areas between residences and sand bags will disturb
approximately 1 4 acres Excavation of material from the sand spit on the north end of the
island will disturb approximately 5 0 acres The total disturbed area will be approximately 8 6
acres
g Will the proposed project encroach on any public easement, public access way or other area
®Yes ❑No ❑NA
that the public has established use of?
The sand bag structure will cover the area from the front of the 20 residential structures and
extend approximately 45 ft seaward This area is changing dramatically day to day but based
on the most recent survey data, the landward portion of the structure would be constructed at
an elevation ranging from 5 5 — 6 9 ft NAVD, whereas the seaward edge would extend out to
elevations ranging from 0 7 — 5 2 ft NAVD The mean high water elevation is +14 ft NAVD
With the sand bag revetment installed (See Figure B on Sheet 2 of 3 in the Attachments) the
sand bags may extend seaward of the mean high water elevation of beach Some of the
residences north of Topsail Reef presently impose some restrictions on public access during
times of high tide As a result, installation of the sand bag structure would not have a
significant incremental impact on public access in the project area at the time of high tide
h Describe location and type of existing and proposed discharges to waters of the state
N/A - No discharges will be made into state waters (see description of construction methodology in item c)
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
I Is there any mitigation proposed? If yes, attach a mitigation proposal
❑Yes ®No ❑NA
While there is no formal mitigation proposed for the sand bag revetment installation, the Town
of North Topsail Beach will continue to monitor the area with beach profile surveys associated
with its ongoing inlet/beach management plan The Town expects to perform maintenance of
the new channel through New River Inlet in the next 2 to 2 5 years At that time, some of the
dredged material could be used to provide beach nourishment in the sand bag project area
Maintenance of the inlet channel will be predicated on satisfying conditions contained in DOA
permit SAW 2005 -00344 and CAMA permit 79 -10
OL
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 ma /or development application
Please consult the application instruction booklet on how to properly prepare the required items below
a A project narrative (See attached)
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
No work has been done at the site for this project See Sheets 2 of 3 and 3 of 3 in the Attachments for the plan view of the
proposal and a typical cross - section, respectively Sheet 2 of 3 shows both the site plan (Figure A) and the areas that
would likely be disturbed during construction (Figure B)
c A site or location map that is sufficiently detailed to guide agency personnel unfamiliar with the area to the site (See
Sheet 1 of 3 in the Attachments)
d A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected
properties NIA
e The appropriate application fee Check or money order made payable to DENR
f A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and signed return receipts
as proof that such owners have received a copy of the application and plats by certified mail Such landowners must be
advised that they have 30 days in which to submit comments on the proposed project to the Division of Coastal
Management
Name See Attached Phone No
Address
Name Phone No
Address
Name Phone No
Address y
g A list of previous state or federal permits issued for work on the project tract Include permit numbers, permittee, and
issuing dates
Permittee Town of North Topsail Beach (management plan) DOA Permit SAW - 2005 -00344
Permittee Town of North Topsail Beach (management plan) CAMA Permit 79 -10
Permittee town of North Topsail Beach (Off - Island Truck Haul CAMA Permit 191 -05 (As modified)
Operation)
h Signed consultant or agent authorization form, if applicable
i Wetland delineation, if necessary
I 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 `� Print Name Stuart Turille7�
T 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
DDCM MP-4 Structures Information
Form DCM MP-2
a-+.: a ....ny �. a 9u, .nom a NON �, s
iw;.•sr _.w� .vf and FILL
y_R
(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. EXCAVATIOji! ❑
a Amount of material to be excavated from below NHW or
NWL in cubic yards
None
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
❑CW ❑SAV ❑SB
❑WL NNone
(ii) Describe the purpose of the excavation in these
areas
N/A
6
b i ype of materai to oe excavateu
Beach sand and shell
d High- ground excavation in cubic yards
Between 14,000 and 17,000 cubic yards to fill
the sand bags Material will be obtained from
a combination of the sand spit (approximately
10,000 cy) and material trucked in from an off
island source (up to 7,000 cy)
5I P 2 r� 2 01?
Access
Other (excluding
Channel
Canal
Boat
Boat
Rock
Rock
shoreline
(NLW or
Basin
Ramp
Groin
Breakwater
stabilization)
NWL
Length
Width
Avg
Existing
NA_ -
NA _
Depth
Final
Project
NA
NA
Depth
1. EXCAVATIOji! ❑
a Amount of material to be excavated from below NHW or
NWL in cubic yards
None
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
❑CW ❑SAV ❑SB
❑WL NNone
(ii) Describe the purpose of the excavation in these
areas
N/A
6
b i ype of materai to oe excavateu
Beach sand and shell
d High- ground excavation in cubic yards
Between 14,000 and 17,000 cubic yards to fill
the sand bags Material will be obtained from
a combination of the sand spit (approximately
10,000 cy) and material trucked in from an off
island source (up to 7,000 cy)
5I P 2 r� 2 01?
2. DISPOSAL OF EXCAVATED MATERIAL ®This section not applcable
a Location of disposal area b Dimensions of disposal area
Material excavated from a combination of the spit and the off- The approximate area to be covered by the
island borrow source will be used to fill sand bags to construct sandbags will be 67,500 sq It (1 55 acres)
the revetment Area covered = 1,500 ft long x 45 feet wide
C (Q Do you claim title to disposal area?
❑Yes ❑No ®NA
(n) 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
(u) Describe the purpose of disposal in these areas
N/A
d (Q Will a disposal area be available for future
maintenance?
❑Yes ❑No ®NA
(u) 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?
3. SHORELINE STABILIZAT16N _ El This section not applicable
(If development is a'taood grom,. use MP -4 - Structures) ,
a Type of shoreline stabilization
❑Bulkhead ❑Riprap ❑Breakwater /Sill ❑
Other Geotextile Sand Bap revetment
G Average distance waterward of NHW or NWL 0 feet (
e Type of stabilization material
Two primary bag dimensions are proposed Per the
manufacturer's specifications, both bags, when filled, will
have widths of approximately 4 ft and a filled height of
between 1 5 ft and 2 0 ft The difference in the two types of
bags proposed are their lengths, which are proposed to be
9 ft and 14 ft, respectively The revetment will be
constructed out of a combination of these bags to achieve a
base width not to exceed 45 ft and an elevation of
approximately 12 Oft NAVD
g Number of square feet of fill to be placed below water
level NONE
Bulkhead backfill Riprap
Breakwater /Sill Other geotextile sand
filled bags
I Source of fill material
Sand bags will be filled with a combination of sand
obtained from the surface of the sand spit located
7
b Length 14bU tt DIUs a bU -Tt wingwall
Width Total approximately 45 feet -
d Maximum distance waterward of NHW or
NWL 71 ft
(i) Has there been shoreline erosion during
preceding 12 months?
®Yes ❑No ❑NA
(n) If yes, state amount of erosion and source
of erosion amount information
Beach profile surveys taken in the area as
part of the Town of North Topsail Beach's
shoreline management program have
documented shoreline recession rates of
between 196 feet/year to 246 feet/year in
the area north of Topsail Reef since
completion of the Phase 1 beach
nourishment project in February 2013
Examples of the profile surveys are
provided in Figures 2 and 3 in the Project
Narrative
h Type of fill material
Geotextile bags filled with sand
0CM1 ,N1U\P,11tiG 01 \, NC
S C f s� F�
adjacent to New River Inlet (see Exhibit 1 in the
Attachments) and an off - island borrow source All
excavation of the material will be above the NHW line
4. OTHER FILL ACTIVITIES ❑This section not applicable
(Excluding Shoreline Stabilization)
a 6) Will fill material be brouqht to the site? ®Yes ❑ b (i) Will fill material be placed in coastal
No ❑NA
If yes,
(u) Amount of material to be placed in the water
None
(iii) Dimensions of fill area
N/A
(iv) Purpose of fill
To fill geotextile sand bags
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
❑WL ®None
(n) Describe the purpose of the fill in these
areas To fill geotextile sand bags
5. GENERAL
a How will excavated or fill material be kept on site and b What type of construction equipment will be
erosion controlled? used (e g , dragime, backhoe, or hydraulic
All fill brought to the site will be used to fill geotextile dredge)?
sand bags See explanation of construction Bulldozer, dump trucks, frontend loader,
methodology in item c of DCM MP -1) water pump
C (i) Will navigational aids be required as a result of the d (i) Will wetlands be crossed in transporting
project? equipment to project site? ❑Yes ®No
❑Yes ®No ❑NA ❑NA
(u) If yes, explain what type and how they will be (n) If yes, explain steps that will be taken to
implemented avoid or minimize environmental impacts
. XOl&4
Date =
Project Name
Phase 1 Emergency Sand Bag Revetment — North end North Topsail Beach
Applicant Name -
Town of North Topsail Beach
Applicant Signature
8
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Attachment 2.
EXHIBIT 1 - Sand Source
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Coastal Management
Pat McCrory John E Skvarla, III
Governor Secretary
October 2, 2014
Stuart Turille
2008 Loggerhead Court
North Topsail Beach, NC 28460
Dear Mr. Turille:
The Division of Coastal Management Wilmington Regional Office received a complete
application on August 27, 2014 from the Town of North Topsail Beach for a proposed Sand
Tube Revetment, which was circulated to the State and Federal commenting agencies for review.
On September 17, 2014, a modification to the original proposal was received by the Division
requesting the placement of approximately 35,000 to 50,000 cubic yards of sand on the
oceanfront to assist in the construction of the proposed Sand Tube Revetment project. It was
determined on September 18, 2014 that the proposed modification was a significant change in
the design of the project and would require a re- submittal of the permit application to include re-
notification to adjacent property owners, as well as a new public notice and comment period.
On September 22, 2014 the Division received notice that the Town no longer wished to
pursue the Sand Tube Revetment and would be submitting a new CAMA Major Permit
Application requesting a sand bag structure. Due to this, the Division is retiring the original
application and will be informing the State and Federal commenting agencies this permit request
is no longer valid.
We look forward to working with you on the new proposal, and if there is anything the
Division can do to help, please let us know. If you have any questions concerning this matter,
please feel free to contact me at (252) 808 -2808 (ext. 211) or by e-mail at
Jonathan.Howell@ncdenr.gov.
Sincerely,
Jonathan Howell
Asst. Major Permits Coordinator
400 Commerce Ave, Morehead City, NC 28557 -3421
Phone 252 - 808 -28081 FAX 252 - 247 -3330 Internet www nccoastalmanagement net
An Equal Opportunity \ Affirmative Action Employer