ATLANTIC HARBOR REVISED PERMIT Updated 1-2020

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NELSON BAYNELSON BAY
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SITE
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
CARTERET COUNTY, NORTH CAROLINA
SITE
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
INDEX OF DRAWINGS
SHEET NO.SHEET TITLE
1 COVER SHEET
2 PROJECT SITE PLAN
3 DREDGE PLAN
4 USACE AUTHORIZED NAVIGATION CHANNEL
5 DREDGE MATERIAL DISPOSAL PLAN
6 LIVING SHORELINE LAYOUT PLAN
7 LIVING SHORELINE EXISTING PLAN
8 LIVING SHORELINE PROPOSED GRADING PLAN
9 TYPICAL DREDGE SECTIONS
10 GRANITE ROCK SILL DETAILS
11 WHITE POINT TYPICAL SECTION
COVER SHEET 1
LOCATION MAP
NOT TO SCALE
VICINITY MAP
NOT TO SCALE
WHITE POINT DREDGE MATERIAL
PLACEMENT SITE, SEE SHEET 5
15' BREAK FOR TIDAL FLUSHING
AND FISH PASSAGE, SEE TYPICAL
SECTION SHEET 10
ENGINEERED WAVE
ATTENUATORS, TYP
SEE DETAIL SHEET 10
APPROX LIMITS OF
DREDGING INCLUDING
SIDE SLOPE, TYP
GRANITE ROCK SILL, SEE TYPICAL
SECTION SHEET 10
N:422,467
E:2,799,251
USACE SETBACK LINE
N:424,107
E:2,799,831
N:424,411
E:2,799,201
N:423,925
E:2,800,003
N:423,880
E:2,800,024
N:423,583
E:2,799,981
CHANNEL BASE
IMPACT AREA
6+008+0010+0012+0014+0016+0018+0020+0022+002
4
+
0
0
32
+
0
0
30
+
0
0
28
+
0
0
26
+
0
0
N:423,775
E:2,799,950
NO DREDGE MATERIAL
PLACEMENT LANDWARD
OF USACE EASEMENT LINE
N:424,087
E:2,800,376
USACE EASEMENT LINE
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
PROJECT SITE PLAN 2
LEGEND
DREDGE IMPACT LIMITS
USACE SETBACK LINE
MAINTENANCE CHANNEL BASELINE
MAINTENANCE CHANNEL BASE IMPACT AREA
MAINTENANCE CHANNEL SIDE SLOPE IMPACT AREA
GRANITE ROCK SILL
150'0'150'300'
SCALE: 1''=300'
1.ATTENUATORS SHOULD BE CONSTRUCTED SIDE BY SIDE TO SPAN 25' IN TOTAL
LENGTH PER STRUCTURE.
2.ATTENTUATORS SHOULD BE CENTERED ON THE 15' TIDAL GAP TO ENSURE A 5'
OVERLAP OF THE STRUCTURE PER SIDE.
3.ATTENUATOR STRUCTURE SHOULD BE POSITIONED 5' SEAWARD OF GRANITE ROCK
SILL SCOUR ROCK.
4.WAVE ATTENUATORS SHALL INCLUDE A LIGHTED AID TO NAVIGATION (ATON) AT
LOCATIONS AS SHOWN ON SHEET 8.
WAVE ATTENUATOR CONSTRUCTION NOTES:
WHITE POINT DREDGE MATERIAL
PLACEMENT SITE, SEE SHEET 5
USACE SETBACK LINE
6+008+0010+0012+0014+0016+0018+0020+0022+002
4
+
0
0
32
+
0
0
30
+
0
0
28
+
0
0
26
+
0
0
N:422,467
E:2,799,251
N:424,411
E:2,799,201
APPROX LIMITS OF DREDGING
INCLUDING SIDE SLOPE, TYP
CHANNEL BASE
IMPACT AREA
N:424,107
E:2,799,831
N:423,925
E:2,800,003
N:423,880
E:2,800,024
N:423,583
E:2,799,981
Maintenance Dredge Control Table
Station Azimuth (˚)Depth (MLLW)Width (FT)Side Slope (H':V')Dredge Density
(cy/ft)
Cummulative
Volume (CY)
6+00 123.17 -6 MLLW +1 40 5:1 0.6
7+00 123.17 -6 MLLW +1 40 5:1 0.8 59
8+00 123.17 -6 MLLW +1 40 5:1 1.0 156
9+00 123.17 -6 MLLW +1 40 5:1 1.3 268
10+00 123.17 -6 MLLW +1 40 5:1 1.4 401
11+00 123.17 -6 MLLW +1 40 5:1 1.7 555
12+00 123.17 -6 MLLW +1 40 5:1 3.4 808
13+00 123.17 -6 MLLW +1 40 5:1 6.5 1,304
14+00 123.17 -6 MLLW +1 40 5:1 9.1 2,084
15+00 123.17 -6 MLLW +1 40 5:1 8.5 2,961
16+00 123.17 -6 MLLW +1 40 5:1 8.2 3,795
17+00 123.17 -6 MLLW +1 40 5:1 7.6 4,588
18+00 123.17 -6 MLLW +1 40 5:1 8.0 5,369
19+00 110.83 -6 MLLW +1 40 5:1 10.2 6,280
20+00 98.66 -6 MLLW +1 40 5:1 9.7 7,278
21+00 98.66 -6 MLLW +1 40 5:1 10.3 8,276
22+00 81.71 -6 MLLW +1 36.6 5:1 10.0 9,291
22+50 55.7 -6 MLLW +1 20.2 3:1 5.8 9,687
23+00 46.53 -5 MLLW +1 25 3:1 4.9 9,955
24+00 46.53 -5 MLLW +1 30 3:1 4.1 10,403
25+00 36.15 -5 MLLW +1 45.7 5:1 4.0 10,807
26+00 25.77 -5 MLLW +1 55 5:1 3.0 11,156
27+00 25.77 -5 MLLW +1 190 5:1 6.2 11,615
28+00 25.77 -5 MLLW +1 190 5:1 5.0 12,174
29+00 25.77 -5 MLLW +1 190 5:1 3.8 12,615
30+00 25.77 -5 MLLW +1 190 5:1 3.2 12,966
31+00 25.77 -5 MLLW +1 190 5:1 0.6 13,159
32+00 25.77 -5 MLLW +1 190 5:1 1.1 13,247
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
DREDGE PLAN 3
150'0'150'300'
SCALE: 1''=300'
SEE SHEET 9 FOR DREDGE TYPICAL SECTIONS.
LEGEND
DREDGE IMPACT LIMITS
USACE SETBACK LINE
MAINTENANCE CHANNEL BASELINE
MAINTENANCE CHANNEL BASE IMPACT AREA
MAINTENANCE CHANNEL SIDE SLOPE IMPACT AREA
NOTE:
USACE AUTHORIZED
NAVIGATION CHANNEL (BASE)
USACE SETBACK LINE
N:422,467
E:2,799,251
N:424,411
E:2,799,201
6+008+0010+0012+0014+0016+0018+0020+0022+002
4
+
0
0
32
+
0
0
30
+
0
0
28
+
0
0
26
+
0
0
MAINTENANCE CHANNEL
BASE (IMPACT AREA)
N:424,107
E:2,799,831
N:423,925
E:2,800,003
N:423,880
E:2,800,024
N:423,583
E:2,799,981
N:423,775
E:2,799,950
N:424,087
E:2,800,376
NO DREDGE MATERIAL
PLACEMENT LANDWARD OF
USACE EASEMENT LINE
USACE EASEMENT LINE
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
USACE AUTHORIZED NAVIGATION CHANNEL 4
150'0'150'300'
SCALE: 1''=300'
LEGEND
USACE AUTHORIZED NAVIGATION CHANNEL (BASE)
USACE SETBACK LINE
MAINTENANCE CHANNEL BASELINE
MAINTENANCE CHANNEL BASE (IMPACT AREA)
APPROXIMATE
PROPOSED MHW LINE
OUTER LIMIT OF DREDGE MATERIAL
FILL PLACEMENT, 30' OFFSET FROM
EXISTING MHW OR LANDWARD OF
PLANTING LIMITS
DREDGE MATERIAL
PLACEMENT SITE, SEE
TYPICAL SECTION ON
SHEET 11
APPROX LIMITS OF
DREDGING INCLUDING
SIDE SLOPE, TYP
(3)(4)
(2)
(1)
(0)
(3
)(3)SFSFSFSFSFSFSFMHWMHWMHWMHWMHWMHWMHWMHWMHWMHW MHW MHW MHWMHWMHWMHWMHWMHWMHWMHWMHWMHWMHWMHWS
F
SF
SF SFSFSFSFSFSFSFSFSFSF(-1)
EXISTING CONTOUR, TYP
SF
SF
N:423,775
E:2,799,950
N:424,087
E:2,800,376
NO DREDGE MATERIAL
PLACEMENT LANDWARD OF
USACE EASEMENT LINE
USACE EASEMENT LINE
MHWMHWMHWMHWMHWMHWMHWMHWMHWMHW
MH
W
MHW
MHW
MHW MHW MHWMHWMHWMHWMHWMHW MHWMHWMHWMHWMHW
APPROXIMATE
EXISTING MHW LINE
16"20"EXISTING GROUND
AFTER SILL
CONSTRUCTION
OVERLAND FLOW
WOVEN WIRE FENCE (14 1/2 GA
MIN, MAX 6" MESH SPACING)
WITH FILTER CLOTH OVER
.
EMBED FILTER CLOTH
MIN 8" INTO GROUND
3'-0" MIN STEEL FENCE POST
10' MAX POST SPACING
1.ALL MATERIAL EXCAVATED FROM CHANNEL SHALL BE TRANSPORTED TO PLACEMENT AREA. ANY MISPLACED
MATERIALS SHALL BE IMMEDIATELY REGATHERED AND TRANSPORTED TO THE MATERIAL PLACEMENT AREA.
2.MATERIAL SHALL BE PLACED WITHIN THE LIMITS AND PLACEMENT LINES AS SHOWN IN THE PLANS AS
PRACTICALLY AS POSSIBLE. PLACED MATERIAL SHALL BE GRADED TO PROHIBIT WATER PONDING.
3.ALL ELEVATIONS SHOWN ARE REFERENCED TO MEAN LOWER LOW WATER (MLLW).
4.THE TOPOGRAPHY PRESENTED ON THE MATERIAL PLACEMENT SITE AND SECTIONS IS BASED ON 2018 SURVEYS
COMPLETED BY GEODYNAMICS LLC AND CAN ONLY BE CONSIDERED REPRESENTATIVE OF THAT TIME.
1.CONTRACTOR SHALL INSTALL TEMPORARY SILT FENCE AROUND LIMITS OF FILL AS SHOWN ON MATERIAL PLACEMENT AREA
SECTION OF SHEET 10. APPROXIMATE ACREAGE FOR MATERIAL PLACEMENT WITHIN SILT FENCE IS 2.7 AC.
2.DREDGED MATERIAL SHALL BE PLACED AS FAR AWAY FROM SILT FENCE AS PRACTICLE AND SPREADING OPERATIONS
CONDUCTED AS TO ENCOURAGE AS MUCH SETTLING OF SEDIMENTS AS REASONABLE.
3.CONTRACTOR SHALL INSPECT SILT FENCE DAILY AND ALERT ENGINEER OF ANY ISSUES WITH PERFORMANCE OR
UNACCEPTABLE SEDIMENT DISCHARGES.
4.SILT FENCING MAY NOT BE REMOVED UNTIL ALL CONTRIBUTING UPGRADIENT AREAS ARE STABILIZED.
5.SILT FENCE SHALL BE PLACED NO CLOSER THAN 30' FROM EXISTING MHW OR ALONG FUTURE PLANTING LIMITS. MHW LINE
SHOWN ON DRAWINGS IS APPROXIMATE. CONTRACTOR SHALL HAVE EXISTING MHW LINE SURVEYED BEFORE CONSTRUCTION
COMMENCES TO VERIFY ALLOWABLE SILT FENCE LOCATION.
SEDIMENT & EROSION CONTROL NOTES:
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
DREDGE MATERIAL DISPOSAL PLAN 5
50'0'50'100'
SCALE: 1''=100'
MATERIAL PLACEMENT AREA NOTES:
LEGEND
DREDGE IMPACT LIMITS
APPROX. SILT FENCE INSTALLATION LOCATION
APPROX. PR0POSED MEAN HIGH WATER LINE
APPROX. EXISTING MEAN HIGH WATER LINE
SF
MHW
TYPICAL SILT FENCE
NOT TO SCALE
MHW
0+001+002+003+004+005+006
+
0
0
7+0
0
8+00 9+0010+0011+0012+0013+0014+0015+0016+00WP #1
WP #2
WP #4
WP #5
WP #6
WP #8
WP #9
WP #10
WP #11
WP #12
WP #13
WP #14
WP # 15
WP #16
WP #3
WP #17
WP #18
WP #19
WP #20
WP #21
WP #22
WP #24
WP #23
WP #7 17+0017+36USACE SETBACK LINE
CENTERLINE OF GRANITE
ROCK SILL, SEE TYPICAL
SECTIONS SHEET 10
(3)(4)
(2)
(1)
(-4
)
(3
)(3)
Point Table
Description
WP #1
WP #2
WP#3
WP #4
WP #5
WP #6
WP #7
WP #8
WP #9
WP #10
WP #11
WP #12
WP #13
WP #14
WP #15
WP #16
WP #17
WP # 18
WP #19
WP #20
WP #21
WP #22
WP #23
WP #24
Northing
423933.19
423883.23
423873.94
423864.05
423577.15
423567.31
423557.58
423548.40
423539.67
423530.88
423521.99
423500.44
423437.64
423408.54
423345.88
423306.87
423298.06
423330.14
423419.67
423614.48
423813.81
423961.93
424105.80
424146.23
Easting
2800070.21
2800093.22
2800096.93
2800098.28
2800056.00
2800054.14
2800051.18
2800047.26
2800042.69
2800037.96
2800033.34
2800020.74
2799979.74
2799987.03
2800044.46
2800136.54
2800211.03
2800278.82
2800323.37
2800368.62
2800385.00
2800361.37
2800318.92
2800297.68
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
60'0'60'120'
SCALE: 1''=120'
LEGEND
GRANITE ROCK SILL CENTERLINE
GRANITE ROCK PLACEMENT LIMITS
USACE SETBACK LINE
LIVING SHORELINE LAYOUT PLAN 6
EXISTING CONTOUR, TYP
NO DREDGE MATERIAL
PLACEMENT LANDWARD
OF USACE EASEMENT LINEUSACE EASEMENT LINE
MLW
MLWMLWMLWMLWM
L
W
MLW
M
L
W
MLW
MLWMLWMLWMLWMLWMLW
ML
W
M
L
W
M
L
W MLWML
W MLWMLW MLWMLWMLWMLW
MHW
MHWMHWMHWMHWMH
W
M
H
W
M
HW
MHW
MHWMHWMHWMHWMHWMHW
MHW
MHW
MHWMHW
MHW MHW
MHWMHW MHWMHWMHW
APPROXIMATE MHW EL 0.68 MLLW
APPROXIMATE MLW EL 0.10 MLLW
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
50'0'50'100'
SCALE: 1''=100'
LIVING SHORELINE EXISTING PLAN 7
SLOP
E

F
R
O
M

+
2
.
0
'

T
O

0
.
0

M
L
L
W
GRANITE ROCK SILL,
SEE TYPICAL SECTIONS
SHEET 10
SLOPED BACKFILL W/
PLANTINGS AS SHOWN
ON TYPICAL SECTION
SHEET10
SPOIL
PLACEMENT
NO DREDGE MATERIAL
PLACEMENT LANDWARD
OF USACE EASEMENT LINE
ENGINEERED WAVE
ATTENUATORS, TYP
SEE DETAIL SHEET 10
15' BREAK FOR TIDAL
FLUSHING AND FISH
PASSAGE, SEE TYPICAL
SECTION SHEET 10
AID TO NAVIGATION
LIGHT (ATON), TYP
4 LOCATIONS AS
INDICATED
USACE EASEMENT LINE
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
NOTE:
MATERIAL PLACEMENT FROM MAINTENANCE DREDGING
NOT CONSIDERED IN POST CONSTRUCTION GRADING.
50'0'50'100'
SCALE: 1''=100'
LIVING SHORELINE PROPOSED GRADING PLAN 8
LANDWARD LIMIT OF BACKFILL
PROPOSED MHW
EL 0.68 MLLW
VARIES 10'-0" MIN VARIES 10'-0" MIN
USACE AUTHORIZED
CHANNEL LIMITS, TYP
MLW EL = 0.10 MLLW
APPROXIMATE EXISTING GRADE
20'-0"20'-0"
APPROXIMATE EXISTING GRADE
DESIGN DREDGE
EL -5.0 MLLW
1.0' ALLOWABLE OVERDREDGE
DESIGN DREDGE
EL -6.0 MLLW
1.0' ALLOWABLE 0VERDREDGE
MHW EL = 0.68 MLLW
MAINTENANCE CHANNEL BASELINE
VARIESVARIES
VARIESVARIES
USACE AUTHORIZED
CHANNEL LIMITS, TYP
MLW EL = 0.10 MLLW MHW EL = 0.68 MLLW
MAINTENANCE CHANNEL BASELINE
3:1 3:1
APPROXIMATE LIMITS OF
DREDGING SIDE SLOPES, TYP
5:1
APPROXIMATE LIMITS OF
DREDGING SIDE SLOPES, TYP
5:1
NOTES
1.THE BATHYMETRY PRESENTED ON THE DREDGE PLAN AND SECTIONS IS BASED ON
2018 SURVEY'S CONDUCTED BY GEODYNAMICS LLC. AND CAN ONLY BE
CONSIDERED AS REPRESENTATIVE OF THAT TIME. SURVEY VERTICAL REFERENCE
MLLW DATUM.
2.PLAN COORDINATES AND WORK POINTS ARE BASED ON THE NORTH CAROLINA
STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN DATUM 83 (NAD83).
3.ALL DREDGED MATERIAL WILL BE PLACED UPLAND IN THE WHITE POINT MATERIAL
PLACEMENT SITE AS SHOWN ON THE PERMIT DRAWINGS.
4.ALL DREDGING SHALL BE PERFORMED WITHIN THE LIMITS OF THE PERMITTED
DREDGING AREA AS SHOWN IN THE DRAWINGS WITH ALLOWABLE OVERDREDGE
DEPTH AS NOTED.
5.THE TIDAL DATUMS (MHW, MLW, & NAVD) SHOWN HEREIN ARE BASED ON NOAA
TIDAL DATUMS AT SEA LEVEL, NC STATION 8655875.
NAVD88. . . . . . . . .0.73
MHW. . . . . . . . . . .0.68
MTL. . . . . . . . . . . . 0.39
MLW. . . . . . . . . . .0.10
MLLW. . . . . . . . . . 0.00
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
PERMITS
1.IT IS THE INTENT OF THESE PLANS TO BE IN ACCORDANCE WITH APPLICABLE
CODES AND AUTHORITIES HAVING JURISDICTION. ANY DISCREPANCIES BETWEEN
THESE PLANS AND APPLICABLE CODES SHALL BE IMMEDIATELY BROUGHT TO THE
ATTENTION OF THE OWNER.
2.IT IS THE INTENT OF THESE PLANS AND THE RESPONSIBILITY OF THE
CONTRACTOR TO COMPLY WITH THE ENVIRONMENTAL PERMITS ISSUED FOR THIS
PROJECT, IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO FAMILIARIZE AND
GOVERN HIMSELF BY ALL PROVISIONS OF THESE PERMITS. SEE THE TECHNICAL
SPECIFICATIONS.
STAGING AREAS SHALL BE MAINTAINED BY THE CONTRACTOR. STAGING AREAS SHALL
BE CLEARED OF DEBRIS AND CONTRACTOR INSTALLED AMENITIES AT THE COMPLETION
AND ACCEPTANCE OF WORK IN THE AREA. THE CONTRACTOR SHALL RESTORE THE
ACCESS AREAS TO THEIR ORIGINAL CONDITION AFTER WORK IN THE AREA IS
COMPLETE. THIS WORK INCLUDES REPLACEMENT OF FENCING, SIGNS, SAND FENCE,
VEGETATION, WALKWAYS, PARKING FACILITIES, PAVED AREAS AND OTHER
MISCELLANEOUS ITEMS. ALL REPLACEMENT MATERIALS SHALL BE APPROVED BY THE
OWNER BEFORE INSTALLATION.
STAGING
TYPICAL DREDGE SECTIONS 9
5'0'5'10'
SCALE: 1''=10'
TYPICAL SECTION STA 6+00 TO 22+00
SCALE: 1"=10'-0"
TYPICAL SECTION STA 22+50 TO 32+00
SCALE: 1"=10'-0"
5'-0"
2
MHW EL= 0.68 MLLW 1
EL +2.0
1
2
8'-6"8'-6"
FILTER CLOTH 6" NCDOT CLASS A RIPRAP
BEDDING STONE
EL -1.5, TYP
EL -2.0, TYP
2
1
NOMINAL 350-LB (18" Ø) GRANITE, TYP
10:1 SLO
P
E
EL +2.0
BACKFILL
EXISTING GROUND
(VARIES)
LANDWARD
EXISTING
GRADE (VARIES)
EL 0.0
MARSH RESTORATION
AREA, SEE NOTES
6'-0"
2MHW EL= 0.68 MLLW
1
EL +2.0
12'-0"12'-0"
NOMINAL 900-LB (24"Ø) GRANITE, TYP
FILTER CLOTH 6" NCDOT CLASS A RIPRAP
BEDDING STONE
1
2
EL -3.0, TYP
9
1
EL +2.0
20:1 SLOPE
LANDWARD
BACKFILL
EL 0.0 EXISTING
GROUND (VARIES)EXISTING GRADE
(VARIES)
MARSH RESTORATION AREA, SEE NOTES
15'-0"
MHW EL= 0.68 MLLW
EL +2.0, TYP
NOMINAL 900-LB (24"Ø)
OR NOMINAL 350-LB (18"Ø)
GRANITE STONE, TYP
FILTER CLOTH
6" NCDOT CLASS A RIPRAP
BEDDING STONE
1
2
1
2
MLW EL= 0.10 MLLW
TOP CLAMP TO BE DETERMINED
AT TIME OF INSTALLATION
PLASTIC PILING CAP,
SEE NOTE
12" DIA HEAVY DUTY FIBERGLASS
PILE @ 4' O.C. (6 PER SILL OPENING)
BOTTOM CONTOUR
BASE CLAMP
PILING DEPTH VARIES BASED ON SOIL BEARING CAPACITY
MLW = 0.10 MLLW
WATER FLUSHING
EL -4.06'EL +2.0
EXISTING GRADE
(VARIES)
SELF-CONTAINED SOLAR POWERED
NAVIGATION LIGHT, SEE NOTE
12" DIA HEAVY DUTY FIBERGLASS
PILE WITH 13" DIA STEEL CAP
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
STA 0+25 TO 4+00 GRANITE ROCK SILL TYPICAL SECTION
15' SILL BREAK TYPICAL SECTION
SCALE 1/4"=1'-0"
SCALE 1/4"=1'-0"
1.MARSH RESTORATION AREA TO BE BACKFILLED AS SHOWN ON DRAWINGS FROM EL 0.0 MLLW
UP TO THE EXISTING +2.0 MLLW CONTOUR.
2.MARSH VEGETATION TO BE PLANTED IN ACCORDANCE WITH THE NORTH CAROLINA COASTAL
FEDERATION RECOMMENDATIONS. EXPECTATIONS SUGGEST SPARTINA TYPE VEGETATION
AT 9-INCH CENTERS WITHIN BACKFILL AREA.
3.ALL DIMENSIONS SHOWN ARE IN FEET.
4.ALL ELEVATIONS SHOWN ARE IN FEET REFERENCING MEAN LOWER LOW WATER DATUM.
MARSH RESTORATION AREA:
GRANITE ROCK SILL DETAILS 10
2'-0"0'-0''2'-0"4'-0"
SCALE: 1/4"=1'-0''
4'-0"0'-0''4'-0"8'-0"
SCALE: 1/8"=1'-0''
STA 4+50 TO 17+45 GRANITE ROCK SILL TYPICAL SECTION
SCALE 1/8"=1'-0"
ENGINEERED WAVE ATTENUATOR
NOT TO SCALE
NOTE: EACH WAVE ATTENUATOR AS INDICATED
ON PLANS SHALL INCLUDE A LIGHTED AID TO
NAVIGATION (ATON) MEETING USACE
REQUIREMENTS FOR INLAND NIGHTTIME
NAVIGATION APPROXIMATELY HALFWAY WITHIN
EACH 25 FOOT SPAN (4 TOTAL). SEE INSET
DETAIL.
NOTE: SELF-CONTAINED SOLAR NAVIGATION LIGHTS SHALL
BE SEALITE MODEL SL70 OR APPROVED EQUAL.
NAVIGATION LIGHTS SHALL BE UNOBSTRUCTED, SLOW
FLASHING (3-SEC FLASH PATTERN) YELLOW WITH A 10
CANDELA INTENSITY OR OPERATIONAL RANGE OF ONE
NAUTICAL MILE OR AS OTHERWISE REQUIRED BY THE
PERMIT.
ATON INSET
NOT TO SCALE
3:1 3:1
DREDGE MATERIAL, NOT TO EXCEED 3.5' ABOVE
EXISTING GRADE (MAX ELEV +7.5' MLLW)
5'-0"
EL +2.0
8'-6"8'-6"
EL -1.5
EL -2.0
10:1 SLO
P
E
BACKFILL
6'-0"
12'-0"12'-0"
EL +2.0
20:1 SLOPE
BACKFILL
MHW EL= 0.68 MLLW
EL +2.0
EL -1.5
EL -2.0
MHW EL= 0.68 MLLW
SILT FENCE 30' FROM
MHW OR LANDWARD
PLANTING LIMITS, TYP
MARSH VEGETATION TO BE PLANTED
IN ACCORDANCE WITH THE NORTH CAROLINA
COASTAL FEDERATION RECOMMENDATIONS
(EXPECTATIONS SUGGEST SPARTINA VEGETATION
AT 9-INCH CENTERS.), TYP
HARBOR SIDE STA 0+25 TO 4+00 SOUND SIDE STA 4+50 TO 17+35
SAND BACKFILL WITH PLANTINGS
FROM EL 0.0 TO +2.0, TYP
MLW EL= 0.10 MLLWMLW EL= 0.10 MLLW
FILL
GRANITE ROCK
SILL, TYP
EL 0.0
ATLANTIC HARBOR MAINTENANCE
DREDGING & LIVING SHORELINE
MLLW
MOFFATT & NICHOL
CARTERET COUNTY
NAVIGATION PROJECT
REVISED - JANUARY 2020 11
WHITE POINT TYPICAL SECTION 11
5'0'5'10'
SCALE: 1''=10'
TYPICAL SECTION
SCALE: 1"=10'-0"