HomeMy WebLinkAboutBuxton P12 Fill SectionsRev30July202115
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
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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