10153- ATLANTIC SHEETS 2-4 REVISED

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
APPROX LIMITS OF DREDGING
INCLUDING SIDE SLOPE, TYP
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
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:424,411
E:2,799,201
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 40 5:1 3.0 11,156
27+00 25.77 -5 MLLW +1 170 5:1 6.2 11,615
28+00 25.77 -5 MLLW +1 170 5:1 5.0 12,174
29+00 25.77 -5 MLLW +1 170 5:1 3.8 12,615
30+00 25.77 -5 MLLW +1 170 5:1 3.2 12,966
31+00 25.77 -5 MLLW +1 170 5:1 0.6 13,159
32+00 25.77 -5 MLLW +1 170 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: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
N:422,467
E:2,799,251
N:424,411
E:2,799,201
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
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
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)