HomeMy WebLinkAboutBuxton P001-15_FINAL Signed30July2021Ocracoke Island
A
Cape Lookout
National Seash7/11
Ocracoke Inlet
nlet
Rodanthe
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✓� Hatteras Inlet
A t l a n t i c O c e a n
r Project site directions, from Nags Head, NC:
Follow NC-12 S/Cape Hatteras National Park Hwy South.
Continue to follow NC-12 S for 44.3 miles to Haulover public beach access parking area.
North project limit is on beach side of NC-12 (National Park Service Beach) and extends 15,500 feet South
toward Buxton, NC. South project limit is in the vicinity of the old Cape Hatteras Lighthouse location.
Project Site Coordinates
Latitude: 35' 16' 36" N
Longitude: 75° 31' 00" W
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
P a m l i c o S o u n d
ect
e
Cape Hatteras
National Seashore
Buxto
Cape Hatteras
Lighthouse
Hatteras Bight
Cape Point
Atlantic Ocean
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
Drawing Title:
Project Location
& Vicinity Map
12
Proposed
Fill Area
Z�7
Proposed
Borrow
Area Site
DATE:
30 July 2021
DRAWN BY:
JJH
O
APPROVED BY:
HLK
PROJECT #:
2403M
Lighthouse Rd
Cape Hatteras Light •
O
O
O
O
+
O
rn
Cape Hatteras National Seashore
Atlantic Ocean
O
Old Cape
Hatteras N
Light Site rn
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S
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r
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\ \ \ 8n0(,r/S� Ito 1
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A-47
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0 2,000
Scale (Feet)
Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Project Baseline after CSE / CZR (2013)
Shoreline erosion assessment and plan for beach Restoration: Feasibility Report to
Dare County Board of Commissioners, Coastal Science & Engineering, Inc. and CZR Inc.
Z LU
Buxton 9
12
O
O
0
0
rn
Dune - (3,500 If)
STA 1880+50 to 1915+00
Reach 1 - Buxton (4,500 If)
STA 1880+50 to 1925+50
675,000 cy (150 cy/ft)
Lo
tLo M
ZLU
Proposed
Borrow Site o
0
-To
Lo
N
rn o
zw P a m l i c o S o u n d
O O O aramm
Zlw
+ + O 00 CD0 0 0+ + o 00 o
co +
0 12
I CD
Reach 2 - National Seashore (11,500 If)
STA 1770+50 to 1880+50
525,000 cy (46 cy/ft)
Proposed Project Area (15,500 If)
STA 1770+50 to 1925+50
1,200,000 cy
Borrow Area Coordinates
Point
Northing
Easting
U
568721.83
3049889.64
V
568516.05
3052788.54
W
565396.01
3051592.00
X
565786.15
3050865.37
y
565984.17
3049153.82
Z
566016.58
3048509.49
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
zw
Cape Hatteras National Seashore
Project Baseline A-E Coordinate Chart
Description
Northing
Easting
A
588,679.534
3,041,236.832
B
578,776.557
3,039,847.210
C
568,839.562
3,038,736.306
D
566,043.964
3,038,445.962
E
560,711.538
3,036,849.925
Fill Crharlillc
Reach 1 - Buxton (4,500 ft):
Fill volume = 675,000 cy/ft; Average Fill Density = 150 cy/ft
Berm Elevation = +7 ft NAVD
Seaward Slope = 1 on 15
Dune Construction:
Dune Crest Elevation = +13 ft NAVD
Dune Crest Width = -20 ft
Dune Seaward Slope =1:3
Reach 2 - National Seashore (11,000 ft):
Fill Volume = 525,000 cy; Average Fill Density = -46 cy/ft
Berm Elevation = +7 ft NAVD
Seaward Slope =1 on 15
Drawing Title:
OVERALL PROJECT PLAN
LEGEND
Approximate limits of dune fill
Approximate limits of dry sand beach at placement
Sloping beach fill to existing grade
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
02
(�
APPROVED BY:
HI
PROJECT#:
2403M
X
C_D n
N 12
7-
Q
l 0Z
Buxton
20
Zw
Lighthouse Rd
Old Cape 01d `tghthouse Rd
Hatteras o
Light Site >
CD
cli
Dune - (3,500 If) I _
STA 1880+50 to 1915+00
I —South
Underwater
Pipeline
Reach 1 - Buxton (4,500 If) I Cooridor
STA 1880+50 to 1925+50
675,000 cy (150 cy/ft)
Note
Fill design is based on the beach condition in August 2020. The actual
limit of fill will be the +7 ft NAVD contour at the time of construction.
The final configuration and limits of beach construction will be determined
based on conditions at the time of construction and the aggregate total fill
volume that can be accomplished within the available budget for the
project. The indicated quantities are maximum amounts to be permitted.
�To
co
�o
��
zw
Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
J
J
e
0
O
O
12
A t l a n t i c O c e a n
Note
The project will not fill or cover any emergency shore protection
structures such as sandbags. Buffers (no work areas)
alongshore will be maintained around areas of active bird
nesting at the time of construction in consultation with NPS
biologists. To extent practicable, the construction berm will
shift seaward of Mean Low Water at sites of nests then reenter
the existing beach outside of the buffer zone.
MHW (+1.05 ft NAVD)
MLW (-1.94 ft NAVD)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
i�
U') N
co CO
�() CO
Z W
P a m l i c o S o u n d
Cape Hatteras
National Seashore
O O O
p no"
p + O
V N O +
CD
�12�
o
Reach 2 - National Seashore (11,500 If)
STA 1770+50 to 1880+50
525,000 cy (46 cy/ft)
(No dune to be constructed)
Note:
A minimum of two underwater pipeline corridors will be used
for transport of the sand slurry. From those points, land based
pipes will run along the constructed berm.
The order of beach filling alongshore will be determined in
consultation with the National Park Service (NPS) biologists so
as to avoid areas of active nesting by colonial water birds to
the extent practicable.
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
—North
Underwater
Pipeline
Cooridor
�o
U-)co
zw
LEGEND ,
Approximate limits of dune fill
Approximate limits of dry sand beach at placement
Sloping beach fill to existing grade
DRAWING TITLE:
OVERALL PROJECT PLAN
0 1,000
Scale (Feet)
t" �`NCAR ",
eo
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY: JJH
e E7722HBBL11 _
''�'./D�NF'�;GIN EEP.•Oy��c-�
uillini��� �
03
APPROVED BY:
HLK
PROJECT#:
2403M
Note o � � 7� �. •� .; � e •.;�
Fill design is based on the beach condition in August 2020. The actual limit of fill u, v CD
will be the +7 ft NAVD contour at the time of construction. m0 OF
o. u
The final configuration and limits of beach construction will be determined based
on conditions at the time of construction and the aggregate total fill volume that ' t'!
can be accomplished within the available budget for the project. The indicated ,� r
quantities are maximum amounts to be permitted.
o CD°
The project will not fill or cover any emergency shore protection structures such as a `� mom►
sandbags. Buffers (no work areas) alongshore will be maintained around areas of .. �
active bird nesting at the time of construction in consultation with NPS biologists.
To extent practicable, the construction berm will shift seaward of Mean Low Water
at sites of nests then reenter the existing beach outside of the buffer zone.
O -, O O O O .y. O
i o c1. CD
O
n _ o war ®+Y 0
rn-Dune Crest @ +13 ft NAVD rn ' " rn rnBuxtonrn ao
a _ �, , � -� �
Landward Fill Limit -Landward Fill Limit e
@+7 ft NAVD
�m
0
L0
CV
CSC
W
Y
Cn
Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
Aerial Image: 07 May 2021
MHW (+1.05 ft NAVD)
MLW (-1.94 ft NAVD)
K
t•
179
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Reach 1 - Buxton
675,000 cy
4,500 it
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
-Slope Toe Fill Limit
Elevation Varies
DRAWING TITLE:
PROJECT PLAN
STA 1925+50 to STA 1895+00
00
Scale (Feet)
SCALE:
•.�oF
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
•
= 7�g9
Zx?.J•�I'
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r.F
APPROVED BY:
HLK
'y� J
.ti c •p�d��`
i N EEC
iyyii �IU KPGti�o`�
aumm�uaa•
PROJECT#:
2403M
Note
Fill design is based on the beach condition in August 2020. The actual
limit of fill will be the +7 ft NAVD contour at the time of construction.
The final configuration and limits of beach construction will be determined
based on conditions at the time of construction and the aggregate total fill
e + volume that can be accomplished within the available budget for the
a . '`' s project. The indicated quantities are maximum amounts to be permitted.
�c The project will not fill or cover any emergency shore protection
k` structures such as sandbags. Buffers (no work areas) alongshore will be
12` < Ja maintained around areas of active bird nesting at the time of construction
t r^ n consultation with NPS biologists. To extent practicable, the construction
berm will shift seaward of Mean Low Water at sites of nests then reenter
the existing beach outside of the buffer zone.
Buxton'`
., t
I o y �� o 0 o r C) o Y
y Ca a Hatteras
+o +o".. +o p 1" c i
_ ' o Ys o ~Landward Fill Limit o National Seashore a. o
�� �.
e Crest @ +13 ft NAVD —Landward Fill Limit —Berm Fill Limit
' @+7 ft NAVD +7 ft NAVD
—Slope Toe Fill Limit
Elevation Varies
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
Aerial Image: 07 May 2021
/ Note: _ _ LEGEND
Initial dunes will be built along the Village of Buxton during — MHw (+1.05 FT NGVD)
renourishment construction. The dune crest will be at +13 ft — — — — — MLw (-1.94 FT NGVD)
NAVD and the typical width of the dune crest will be 20 ft.FIRST LINE OF VEGETATION
The seaward slope of the dune will be at 1 on 3. The DUNE FILL CREST (+13 ft NAVD)
constructed dry sand berm (@+7 ft NAVD) in front of the toe Slope @ 1 on 3
of the dune will be 200-250 ft wide. BERM FILL - DRY BEACH (+7 ft NAVD)
No fill is to be placed on exposed emergency sand bags, or FILL SLOPE TO TOE
under exposed walkovers and houses.
Note:
No dune will be constructed along Reach 2 - National Seashore.
0 200 A
Reach 1 - Buxton Reach 2 -National Park Service Scale (Feet)
675,000 cy 525,000 cy
4,500If-11,000if Atlantic Ocean
MHW (+1.05 ft NAVD) 1
MLW (-1.94 ft NAVD)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
PROJECT PLAN
STA 1895+00 to STA 1864+00
soMM q��,
`���`,•,`.�o ESA
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
E L� =
• �uGL{ ��j:
'y•3O �Vl
ini���
OC
J
APPROVED BY:HLK
PROJECT*
2403M
Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
Aerial Image: 07 May 2021
MHW (+1.05 ft NAVD)
MLW (-1.94 ft NAVD)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
PROJECT PLAN
STA 1862+00 to STA 1832+00
`span ll-W
ESA °09%
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
72HgL� =
' u,C{1 'ZA-1
' F*%
mi��� �`,,
O�
APPROVED BY:
HLK
PROJECT#:
2403M
_
LEGEND
— — — MHW (+1.05 FT NGVD)
— — — — — MLW (-1.94 FT NGVD)
0--0 0 o FIRST LINE OF VEGETATION
DUNE FILL CREST (+13 ft NAVD)
BERM FILL -DRY BEACH (+7 ft NAVD)
4
FILL SLOPE TO TOE
v.
w
-
r
12 _.
Ci-
12
' AY. "•sir+. 4,,. ,$ .. ,^.
i
... OO - *.• a �... ri _
- J ,
'�. O+
t
- -
_ 4..,
y .. .. S. r - ..
.
+y,.,
-
- I
o
W
_;
—Landward Fill Limit —Berm Fill Limit
f-is9
ap
-
@+7 ft NAVD �� @+7 ft NAVD
i
Note
Fill design is based on the beach condition in August 2020. The actual limit of fill will
be the +7 ft NAVD contour at the time of construction.
The final configuration and limits of beach construction will be determined based on
conditions at the time of construction and the aggregate total fill volume that can be
accomplished within the available budget for the project. The indicated quantities are
maximum amounts to be permitted.
The project will not fill or cover any emergency shore protection structures such as
sandbags. Buffers (no work areas) alongshore will be maintained around areas of
active bird nesting at the time of construction in consultation with NPS biologists. To
extent practicable, the construction berm will shift seaward of Mean Low Water at sites
of nests then reenter the existing beach outside of the buffer zone.
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
Aerial Image: 07 May 2021
MHW (+1.05 ft NAVD) ,
MLW (-1.94 ft NAVD)
—Slope Toe Fill Limit
Elevation Varies
L L=
Note:
No dune will be constructed along Reach 2 - National Seashore.
Reach 2 - National Park Service
525,000 cy
-11,000 If
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
PROJECT PLAN
STA 1832+00 to STA 1800+00
4
J
s
11
S!77le (Feet)
�`Nt"CAR�r.�
eo
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
72HgL� =
• Ly{
'y•3O �l
i��ini�.� �
07
APPROVED BY:
PROJECT#:
2403M
LEGEND
— — — — — MHW (+1.05 FT NGVD)
MLW (-1.94 FT NGVD)
e--•--t�� FIRST LINE OF VEGETATION
BERM FILL - DRY BEACH e
FILL SLOPE TO TOE
12
D `rI.
C CD C
ter `CD
CD
—Landward Fill Limit
A s
P
v O
+ O
00 00 +
r` 00
k
—Berm Fill Limit
I @+7 ft NAVD I
'7 77
MW
Md
I r^�
Haulover Beach
Access
Note i • q
Fill design is based on the beach condition in August 2020. The actual limit of fill will be the +7 ft NAVD contour at the _,►, ' s x�
time of construction. T _ -
I CZ) —Slope Toe Fill Limit ti
The final configuration and limits of beach construction will be determined based on conditions at the time of Elevation Varies
construction and the aggregate total fill volume that can be accomplished within the available budget for the project. The N
indicated quantities are maximum amounts to be permitted. Note'
No dune will be constructed along Reach 2 - National Seashore. E
The project will not fill or cover any emergency shore protection structures such as sandbags. Buffers (no work areas)
alongshore will be maintained around areas of active bird nesting at the time of construction in consultation with NIPS
biologists. To extent practicable, the construction berm will shift seaward of Mean Low Water at sites of nests then �-
reenter the existing beach outside of the buffer zone. N 0 200
CL
Reach 2 - National Park Service Scale (Feet)
525,000 cy
-11,000 If
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) INC Zone 3200
Vertical: NAVD'88 (Feet)
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
Aerial Image: 07 May 2021
MHW (+1.05 ft NAVD) ,
MLW (-1.94 ft NAVD)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
PROJECT PLAN
STA 1800+00 to STA 1770+00
12
t"CAR���r
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
72Hg�1 =
•u,C{,{ 7�I,
'y•% �l
',,�r•�niui��ini��� �`,,
08
APPROVED BY:
PROJECT#:
2403M
15
10
0
> 5
Q
Z
0
0
0
-5
W
-10
-15
is
10
5
Q
Z 0
-5
0
-10
m
w -15
-20
25
15
10
5
Q 0
Z
-5
0
-10
m
w -15
-20
25
National Seashore Station 1770+00
\ — — 8/15/2020
\
\
Ate♦
\
\
\
No Fill at This Station —
. . . . . . . . . . . . . . .
0 100 200 300 400 500 600
Distance from Baseline (ft)
National Seashore Station 1785+00
— — Aug 2020 Profile
—Fill Vol -
^\ MHW
\ -----MLW-------
Berm Elevation +7.0 ft NAVD
Berm Width 130 ft _ _ _ _ — _ — — .
Fill Density 30 cy/ft
0 200 400 600 800 1000 120
Distance from Baseline (ft)
National Seashore Station 1800+00
t — — Aug 2020 Profile
\ —Fill Vol -
\ MHW
\ MLW
1 ----------------
Berm Elevation +7.0 ft NAVD
Berm Width 130 ft -
Fill Density 40 cy/ft ` ♦ _ _
0 200 400 600 800 1000 120
Distance from Baseline (ft)
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Vertical Exaggeration: 10:1
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
MHW (+1.05 ft NAVD) ,
MLW (-1.94 ft NAVD)
15
10
5
Q
Z 0
-5
0
-10
0
w -15
-20
25
0 200 400 600 800 1000 1201
Distance from Baseline (ft)
15
10
5
Q
Z 0
-5
0
-10
m
w -15
-20
25
0 200 400 600 800 1000 1201
Distance from Baseline (ft)
National Seashore Station 1775+00
\ MHW
\ ----- MLW-------
\
♦
♦
Berm Elevation +7.0 ft NAVD
Berm Width 25 ft
Fill Density 30 cy/ft
15
10
0 5
Q 0
Z
-5
0
-10
0
w -15
-20
25
National Seashore Station 1790+00
Aug 2020 Profile
\ — Fill Vol
\ MHW
\
\ ----- MLW-------
Berm Elevation +7.0 ft NAVD
Berm Width 101 ft —
Fill Density 40 cy/ft
National Seashore Station 1805+00
\ — — Aug 2020 Profile
\ — Fill Vol
`� .\
\ MHW
\ MLW
Berm Elevation +7.0 ft NAVD `
Berm Width 119 ft `
Fill Density 40 cy/ft ` — — — _ — — — —
0 200 400 600 800 1000 1201
Distance from Baseline (ft)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
15
10
0 5
Q 0
Z
-5
0
-10
0
w -15
-20
National Seashore Station 1780+00
,\ _ _ Aug 2020 Profile
— Fill Vol -
\ MHW
\ MLW
Berm Elevation +7.0 ft NAVD
Berm Width 28 ft
Fill Density 30 cy/ft
-25
0 200 400 600 800 1000 120
Distance from Baseline (ft)
15
10
0 5
Q
Z 0
-5
0
-10
m
w -15
-20
25
15
10
5
Q 0
Z
-5
0
-10
m
w -15
-20
25
National Seashore Station 1795+00
Aug 2020 Profile
\ — Fill Vol -
\ MHW
\ -----MLW-------
Berm Elevation +7.0 ft NAVD _
Berm Width 122 ft
Fill Density 40 cy/ft
0 200 400 600 800 1000 120
Distance from Baseline (ft)
National Seashore Station 1810+00
\ — — Aug 2020 Profile
— Fill Vol -
\ MHW
\ MLW
1 ----------------
♦ _
♦
Berm Elevation +7.0 ft NAVD
Berm Width 128 ft `
Fill Density 40 cy/ft
0 200 400 600 800 1000 120
Distance from Baseline (ft)
DRAWING TITLE:
PLAN FILL SECTIONS
STA 1770+00 to 1810+00
Nt°CAR"-,
[,�/
° e.%
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
e THE _
•72g1
y.3p u.GfJ.f
mi��� �`,,
Q
O V
APPROVED BY: HLK
PROJECT#:
2403M
15
10
0 5
Q 0
Z
-5
0
-10
w -15
-20
-25
0
15
10
5
Q 0
Z
-5
0
-10
m
w -15
-20
25
15
10
5
Q
Z 0
-5
0
-10
m
w -15
-20
25
0
National Seashore Station 1815+00
- - Aug 2020 Profile
` —Fill Vol -
7 _
\ MHW _
\ MLW
t
---------------
Berm Elevation +7.0 ft NAVD
Berm Width 126 ft ^ `
Fill Density 40 cy/ft ^ _
200 400 600 800 1000 1201
Distance from Baseline (ft)
National Seashore Station 1830+00
Aug 2020 Profile
—Fill Vol -
\ MHW
` MLW
1 ----------------
Berm Elevation +7.0 ft NAVD `
Berm Width 117 ft
Fill Density 50 cy/ft
200 400 600 800 1000 1201
Distance from Baseline (ft)
National Seashore Station 1845+00
- - Aug 2020 Profile
�t —Fill Vol
\ MHW _
\
-----MLW-------
Berm Elevation +7.0 ft NAVD `
Berm Width 135 ft
Fill Density 50 cy/ft IN.
15
10
0 5
Q 0
Z
-5
0
-10
w -15
-20
-25
0
15
10
0 5
Q 0
Z
-5
0
-10
m
w -15
-20
25
15
10
0 5
Q
Z 0
-5
0
-10
0
w -15
-20
25
0
National Seashore Station 1820+00
\ - - Aug 2020 Profile
` — Fill Vol
` MHW
\ -----MLW -------
Berm Elevation +7.0 ft NAVD `
Berm Width 127 ft
Fill Density 40 cy/ft
200 400 600 800 1000 120(
Distance from Baseline (ft)
National Seashore Station 1835+00
Aug 2020 Profile
IN . — Fill Vol
\ MHW
` -----MLW -------
Berm Elevation +7.0 ft NAVD
Berm Width 126 ft `
Fill Density 50 cy/ft
200 400 600 800 1000 120(
Distance from Baseline (ft)
National Seashore Station 1850+00
IN - - Aug 2020 Profile
— Fill Vol
r�
IN
\ MHW
` MLW
t----------------
Berm Elevation +7.0 ft NAVD
Berm Width 101 ft
Fill Density 50 cy/ft `
0 200 400 600 800 1000 1200 0 200 400 600 800 1000 120(
Distance from Baseline (ft) Distance from Baseline (ft)
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Vertical Exaggeration: 10:1
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
MHW (+1.05 ft NAVD) ,
MLW (-1.94 ft NAVD)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
15
10
0 5
Q 0
Z
-5
0
-10
w -15
-20
National Seashore Station 1825+00
IN — — Aug 2020 Profile
- 'N —Fill Vol -
t MHW
\ -----MLW-------
Berm Elevation +7.0 ft NAVD —
Berm Width 125 ft
Fill Density 50 cy/ft `
-25
0
15
10
0 5
Q 0
Z
-5
0
-10
m
w -15
-20
25
15
10
0 5
Q
Z 0
-5
0
-10
m
w -15
-20
25
0
200 400 600 800 1000 1201
Distance from Baseline (ft)
National Seashore Station 1840+00
Aug 2020 Profile
— Fill Vol -
\ MHW
\ -----MLW-------
Berm Elevation +7.0 ft NAVD
Berm Width 132 ft
Fill Density 50 cy/ft
200 400 600 800 1000 1201
Distance from Baseline (ft)
National Seashore Station 1855+00
\ - - Aug 2020 Profile
Fill Vol -
N.
\ MHW
-----MLW-------
Berm Elevation +7.0 ft NAVD `
Berm Width 84 ft `
Fill Density 50 cy/ft` — — — — _
0 200 400 600 800 1000 1201
Distance from Baseline (ft)
DRAWING TITLE:
PLAN FILL SECTIONS
STA 1815+00 to 1855+00
Nt°CARD-,
° e.%
[,�/
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
THE =
•72g1
y.3p u.GfJ.f
mi��� �`,,
APPROVED BY: HLK
PROJECT#:
2403M
15
10
0 5
Q 0
Z
r✓
-5
0
-10
0
w -15
-20
National Seashore Station 1860+00
- - Aug 2020 Profile
—Fill Vol -
\ MHW
\ MLW
\ ----------------
Berm Elevation +7.0 ft NAVD
Berm Width 125 ft
Fill Density 50 cy/ft —
-25
0 200 400 600 800 1000 120
Distance from Baseline (ft)
15
10
5
Q
Z 0
-5
0
-10
m
w -15
-20
-25
15
10
5
Q 0
Z
-5
0
-10
m
w -15
-20
-25
National Seashore Station 1875+00
\ _ Aug 2020 Profile
\ —Fill Vol
\ MHW
1
\ -----MLW--------
Berm Elevation +7.0 ft NAVD `
Berm Width 111 ft
Fill Density 85 cy/ft
200 400 600 800 1000 1200
Distance from Baseline (ft)
Buxton Station 1890+00
\ - - Aug 2020 Profile
t \ —Fill Vol -
t \ _
\ MHW
-----MLW-------
Berm Elevation +7.0 ft NAVD
Berm Width 256 ft
Fill Density 180 cy/ft _
Typical Dune Width 20 ft — —
r
0 200 400 600 800 1000 1200
Distance from Baseline (ft)
r Survey Datum:
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200
Vertical: NAVD'88 (Feet)
Vertical Exaggeration: 10:1
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
MHW (+1.05 ft NAVD) ,
MLW (-1.94 ft NAVD)
15
10
0 5
Q 0
Z
r✓
-5
0
-10
0
w -15
-20
National Seashore Station 1865+00
\ - - Aug 2020 Profile
\ — Fill Vol
1 MHW
\ MLW
\ ----------------
Berm Elevation +7.0 ft NAVD
Berm Width 51 ft
Fill Density 50 cy/ft
-25
0 200 400 600 800 1000 120
Distance from Baseline (ft)
15
10
0 5
Q
Z 0
-5
0
-10
m
Lu -15
-20
-25
15
10
0 5
Q 0
Z
-5
0
-10
0
w -15
-20
25
Berm Elevation +7.0 ft NAVD
Berm Width 239 ft
Fill Density 150 cy/ft
Typical Dune Width 20 ft
Buxton Station 1880+00 Start Dune
— — Aug 2020 Profile
—Fill Vol
MHW
-----MLW -------
0 200 400 600 800 1000 1200
Distance from Baseline (ft)
Buxton Station 1895+00
- - Aug 2020 Profile
It —Fill Vol
t►t
\ MHW
\ -----MLW-------
t
Berm Elevation +7.0 ft NAVD
Berm Width 249 ft
Fill Density 180 cy/ft
Typical Dune Width 20 ft
♦
0 200 400 600 800 1000 12(
Distance from Baseline (ft)
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
15
10
0 5
Q 0
Z
-5
0
Co -10
a)
w -15
-20
25
15
10
0 5
Q
Z 0
-5
0
-10
a�
w -15
-20
25
15
10
0 5
Q 0
Z
-5
0
-10
m
w -15
-20
25
National Seashore Station 1870+00
Aug 2020 Profile
— Fill Vol -
t MHW
\ MLW
\---------------
Berm Elevation +7.0 ft NAVD
Berm Width 135 ft `
Fill Density 70 cy/ft
0 200 400 600 800 1000 12(
Distance from Baseline (ft)
Buxton Station 1885+00
1
Berm Elevation +7.0 ft NAVD .
Berm Width 205 ft
Fill Density 180 cy/ft
Typical Dune Width 20 ft
0
MHW
200 400 600 800 1000 12C
Distance from Baseline (ft)
Buxton Station 1900+00
- - Aug 2020 Profile
t — Fill Vol
\
\ MHW
\ -----MLW -----
Berm Elevation +7.0 ft NAVD
Berm Width 212 ft
Fill Density 180 cy/ft
Typical Dune Width 20 ft `
0 200 400 600 800 1000 120
Distance from Baseline (ft)
DRAWING TITLE:
PLAN FILL SECTIONS
STA 1860+00 to 1900+00
�'N\ CARD-,
° e.%
[,�/
SCALE:
AS SHOWN
DATE:
30 July 2021
DRAWN BY:
JJH
THE =
•72g1
,y.3p u.GfJ.f
mi��� �`,,
APPROVED BY:
PROJECT#:
2403M
15
10
0 5
Q 0
Z
-5
0
-10
a)
w -15
-20
Buxton Station 1905+00 End Dune
i• t
\
\ MHW
\ ----MLW-------
1
Berm Elevation +7.0 ft NAVD `
Berm Width 227 ft
Fill Density 180 cy/ft
Typical Dune Width 20 ft
— Aug 2020 Profile
—Fill Vol -
-25
0 200 400 600 800 1000 1201
Distance from Baseline (ft)
15 Buxton Station 1920+00
Aug 2020 Profile
10 t —Fill Vol
0 5 \
> MHW
�\
Z () \ ----- MLW-------
1 �
c -5
-10 .
W -15 Berm Elevation +7.0 ft NAVD
-20 Berm Width 132 ft
`
Fill Density 75 cy/ft
-25 I I —
200 400 600 800 1000 1200
Distance from Baseline (ft)
Note
Fill design is based on the beach condition in August 2020. The actual limit
of fill will be the +7 ft NAVD contour at the time of construction.
The final configuration and limits of beach construction will be determined
based on conditions at the time of construction and the aggregate total fill
volume that can be accomplished within the available budget for the project.
The indicated quantities are maximum amounts to be permitted.
The project will not fill or cover any emergency shore protection structures
such as sandbags. Buffers (no work areas) alongshore will be maintained
around areas of active bird nesting at the time of construction in consultation
with NPS biologists. To extent practicable, the construction berm will shift
seaward of Mean Low Water at sites of nests then reenter the existing
beach outside of the buffer zone.
r Survey Datum: MHW (+1.05 ft NAVD)
Horizontal: SPCS NAD'83 (Feet) NC Zone 3200 MLW (-1.94 ft NAVD)
Vertical: NAVD'88 (Feet)
Vertical Exaggeration: 10:1
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Data collected: August 2020
� J
15
10
0 5
>
Q 0
Z
4✓
-5
0
-10
w -15
-20
Buxton Station 1910+00
— — Aug 2020 Profile
\ — Fill Vol
\ MHW
\
\ -----MLW-------
\
Berm Elevation +7.0 ft NAVD `
Berm Width 209 ft
Fill Density 150 cy/ft
Typical Dune Width 20 ft `
-25
0
95
10
0
> 5
Q
Z
0
0
> -5
0
W
-10
-15
-100
200 400 600 800
Distance from Baseline (ft)
Buxton Station 1925+00
1000 1200
0 100 200 300 400 500
Distance from Baseline (ft)
Note:
Initial dunes will be built along the Village of Buxton during
renourishment construction. The dune crest will be at +13 ft
NAVD and the typical width of the dune crest will be 20 ft. The
seaward slope of the dune will be at 1 on 3. The constructed dry
sand beach in front of the toe of the dune will be 200-250 ft wide.
No fill is to be placed on exposed emergency sand bags, or under
exposed walkovers and houses.
Note:
No dune will be constructed along Reach 2 - National Seashore.
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
30
20
0
Q 10
Z
c 0
0
N
W -10
20
30
1s
10
0 5
Q 0
Z
5
0
-10
w 15
-20
25
Berm Elevation +7.0 it NAVD
Berm Width 250 ft
Fill Density 150 cy/ft
Typical Dune Width 20 ft
0
Buxton Station 1915+00
— — Aug 2020 Profile
— Fill Vol -
MHW
-- MLW - --
200 400 600 800 1000 120
Distance from Baseline (ft)
Buxton Station 1898+00
i
— Aug 2020 Profile
--- -w -------------------- ----±-------------- + i Proposed Fill ---
'o
Constructed berm (@ +7 ft NAVD) width
_________________-_____--------- to be 220 ft in front of the toe of dune
`\ Fill density to be 180 cy/ft
I
- - --- '---------------------'---------- '
� i
______________________+__________________}--------- __— ------ __*--------- ------ ------- _--------------- }------------------------
0 200 400 600 800 1000 1200
Distance from Baseline (ft)
DRAWING TITLE:
PLAN FILL SECTIONS
STA 1905+00 to 1925+00
DATE:
30 July 2021
DRAWN BY:
JJH
(�
APPROVED BY:HLK
PROJECT #:
2403M
n
--; rt
n
Core Density
200 acres Proposed Borrow Area
10 10-ft Borings - 1 core per 20 acres
Proposed borrow area after
cultural resource evaluation.
32'`00
3oxoo
2S'`oo
0 Bux-42
1S'`oo �\0B \`
-55 ft �•`� N%`�
�00
® k-04
Sxoo
".`.
u 0 B `•Bux-05 2�xOp
oxo 39 Bux-38
Y o❑ ��_
_ `
17 N%
•Bux-35 C
w
•Bux-3 - -
// • B -38 A t l a
9�Bux-33
•Bux-31
•Bux34
/ •Bux-32 /
/ •Bux-29
� / Used in the 2017-2018 nourishment project
Point
Northing
Easting
U
568721.83
3049889.64
V
568516.05
3052788.54
W
565396.01
3051592.00
X
565786.15
3050865.37
Y
565984.17
3049153.82
Z
566016.58
3048509.49
Survey Datum:
Horizontal: SPCS NAD '83 (Feet) NC Zone 3200
Vertical: NAVD '88 (Feet)
Vertical Exaggeration: 20:1
Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:
Bathymetric Data collected: October 2020
-30.0 10+0 SECTION 1 (0)
-35.0
-40.0
-45.0
-50.0
1
-55.0
-60.0
0
SECTION 2 (15+00)
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
0
0
SECTION 3 (20+00)
SECTION 4 (25+00)
-30.0
-35.0
tic Ocean -40.0
-45.0
N -50.0
_55.0
-60.0
Proposed Excavation of 10 ft
below existing substrate
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
500 1000 1500 2000 2500 3000
DISTANCE (FEET)
Proposed Excavation of 10 ft
below existing substrate
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
500 1000 1500 2000 2500 3000
DISTANCE (FEET)
Proposed Excavation of 10 ft
below existing substrate
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
500 1000 1500 2000 2500 3000
DISTANCE (FEET)
..... .. .....
Proposed Excavation of 10 ft
below existing substrate
0 800 0 500
Scale (Feet)
1000 1500 2000
DISTANCE (FEET)
2500
•'�' • Applicant: Project: DRAWING TITLE: cA ,
�• UDare County Beach Renourishment To Protect =�
'•SE..::� 954 Marshall Collins Dr. NC Highway 12 At Buxton BORROW AREA PLAN & / 1
':;% 7 9 Y EXCAVATION SECTIONS
�,• Manteo, NC 27954 Dare County, NC
-30.0
-35.0
-40.0
-45.0
-50.0
-55.0
-60.0
3000
SCALE:
AS SHOWN
DATE:
28 May 2021
DRAWN BY:
JJH
APPROVED BY
HLK
PROJECT#:
2403M
1 :11
.!1
Scale (Feet)
o Bux-35
Mean
STD
Gravel
Granules
Dry Fines
Shell
Ra (all)
Ra (vis)
Mill
N
BUX-36
BUX-35
10 ft COMP
0.478
0.486
0.0
3.7
1.5
11.8
1.00
1.11
Bux-06 00.,
BUX-36
10 ft COMP
0.268
0.417
0.0
4.9
2.5
11.1
1.34
1.82
BUX-35
0.478
11.
11.8
BUX-42
0.596
12.6
11.1
4.9
BUX-43
9 0.552
22.1
7.7
� UX-37
0.512
BUX-37
BUX-38
BUX-39
BUX-40
BUX-41
10 ft COMP
10 ft COMP
10 ft COMP
10 ft COMP
10 ft COMP
0.512
0.282
2.3
15.3
1.6
22.5
1.16
1.33
0-574
0.530
0.0
3.6
0-9
11.4
1.00
1.02
0.579
0.531
0.0
3.8
0-9
15.5
1.00
1.02
0.681
0.421
0.0
12.6
0.0
16.5
1.01
1.07
0.536
0.539
0.0
3.8
0.0
15.0
1.00
1.02
0.596
0.490
0.0
10.1
0.0
12.6
1.00
1.04
BUX-41 22.5
BUX-42 10 ft COMP
Bux-04
0.536
15.0
3.8
BUX-44
0.557
17.9
17.5
BUX-43
BUX-44
10 ft COMP
10 ft COMP
0.552
0.467
0.9
6.8
0.5
22.1
1.00
1.08
0.557
0.386
2.3
8.5
0-0
17.9
1.04
1.17
ALL
10 ft COMP
0.517
0.426
0.6
7.1
0.6
15.6
1.02
1.15
10.9
BUX-40
0.681
16.5
12.6
BUX-39 u Bux-05
0.579
15.5
3.8
, Buxom - _
/ Bux-33 / i ox-38
d /
o Bux-31 / /
Previous Borrow Area (2018)
Bu/34
o Bux-32 /
o Bux-29 /
Notes:
Beach sediment samples (n=140) obtained in August 2019 and analyzed by Coastal
Science & Engineering, Inc.
Offshore borings obtained in April 2021 (10-ft long, 3 inch tubes). Grain size distributions
` based on dry sieving at 0.25 phi intervals.
* Ra - Overfill factor. It provides a measure of how a particular sediment will perform as beach nourishment. Low
Ra's are generally preferred, with ideal being eaqual to 1.0. See Appendix A for detailed geotechnical data.
0.574
11.4
3.6
Boring
MGS (mm)
Shell %
Gravel %
Granule %
BUX-35
0.478
11.8
0.0
3.7
BUX-36
0.268
11.1
0.0
4.9
BUX-37
0.512
22.5
2.3
15.3
BUX-38
0.574
11.4
0.0
3.6
BUX-39
0.579
15.5
0.0
3.8
BUX-40
0.681
16.5
0.0
12.6
BUX-41
0.536
15.0
0.0
3.8
BUX-42
0.596
12.6
0.0
10.1
BUX-43
0.552
22.1
0.9
6.8
BUX-44
1 0.557
17.9
2.3
8,5
Locations, mean grain size, percent shell, and percent gravel for
core composite samples to 10 ft in the proposed Buxton borrow
area based on borings obtained in April 2021.
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Grain Size Distribution
Grain Size (mm)
4 2 1 0.5 0.25 0.125 0.1
10016 8
-+� Borrow Area 10 ft COMP
go
Beach
80
-
70
.. ... .. .. ...... .
60.....
o
50
40
30
.. .... .....
... ...:..
20
.............
10
0 T - _ .-tip
-4 -3 -2 -1 0 1 2 3 4
Grain Size (0)
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
BORROW AREA CORES &
SEDIMENT ANALYSIS
Project CSE 2403-M
Location Buxton (NC)
Date May 2021
BA 10 ft COMP Mean 0.517 mm
BA 10 ft COMP STD 0.426 mm
BA 10 ft COMP Skew-0.489 mm
BA 10 ft COMP Kurt 4.107 mm
BA 10 ft COMP Shell 12.3%
All Beach Mean 0.321 mm
All Beach STD 0.552 mm
All Beach Skew -1.045 mm
All Beach Kurt 5.621 mm
All Beach Shell 7.2%
`�panuuuuuu�.
SCALE:
AS SHOWN
DATE:
30July 2021
DRAWN BY:
JJH
72g1y�l`
'y•% ram`
GIN EEP.•y�r`
ti
n�muanaa••
i*
APPROVED BY:
HLK
PROJECT#:
2403M
Typical Newly Constructed
Crest @ +13 ft NAVD
Beach
The general sand -fencing installation guidance issued by USFWS/NCDCM states
below.
• All sand fencing installations will comply all current statutes and regulations as
specified by the NCDCM and under the NC Coastal Area Management Act (CAMA).
• Sand fence will be placed in a sea turtle compatible design and be made of
biodegradable material.
• Sand fence will be installed on the newly constructed dune crest and not down the
slope of the dune.
• Sand fence will be designed and installed as follows: a maximum of ten (10) foot
long spurs of sand fencing spaced at a minimum of seven (7) feet on a diagonal
alignment (facing the predominate wind direction - from the south for the Avon
project area)
• Only one row of sand fencing will be installed in sea turtle nesting habitat.
• Existing native dune vegetation will be disturbed only to the minimum extent
necessary. Only native, salt tolerant plan species will be installed.
,loft,
(Typical)
40 ft
(Typical)
A t l a n t i c
O c e a n
Beach
Dune Crest
0 30
Scale (Feet)
�o ,o ,o �o ,o ,o
I� I� I�
1 Landward Dune Crest Limit I� IFn IFn1--------------------L_____----------____1___________________1-- Landward Dune Crest Limit 1
American Beachgrass
Sea Oats, Bitter Panicum (North
Pa Variety) or other species.
Vegetation Planted 24" O.C. Fence Post (Typical)
(Typical)
Sand Fence (Typical)
�,.
U Dune Crest Dune Crest
a� _C � 70 � (Shaded Area) � � � � (Shaded Area)
4.
o :: •t•
N
7' - 0" Apart T - 0" Apart
—---------------------- —
Seaward Dune Crest Limit TQ Q a Q Seaward Dune Crest Limit T
• Education signs will be placed where appropriate at beach access points o 0 01 o o 0
explaining the importance of the area to sea turtles and/or the life history of sea
turtle species that nest in the area. Dune Crest Plan View
(Typical Newly Constructed Dune @ +13 ft NA VD)
Notes:
Sand fencing will only be installed along Reach 1 - Buxton.
Vegetation will only be planted along Reach 1 - Buxton
Applicant:
Dare County
954 Marshall Collins Dr.
Manteo, NC 27954
Project:
Beach Renourishment To Protect
NC Highway 12 At Buxton
Dare County, NC
DRAWING TITLE:
SAND FENCING &
VEGETATION
SCALE:
AS SHOWN
C
DATE:
30 July 2021
DRAWN BY:
JJH
1 J
APPROVED BY:
HI K
PROJECT#:
2403M