A21 - RTA_AIWW DREDGING - FY24 COMBINED CONTRACT - NC_W912PM23B0016_Locked.pdf
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- FY24 AIWW Maintenance Dredging
- Solicitation number
- W912PM23B0016
About this file
This document summarizes a federal solicitation for maintenance dredging services of the Atlantic Intracoastal Waterway in North Carolina. The U.S. Army Corps of Engineers, Wilmington District is seeking a contractor to remove approximately 350,000 cubic yards of shoaled material from the waterway between Tyrrell and Brunswick counties to a required depth of 12 feet plus an allowable 2 feet of overdepth. Dredged materials must be disposed of at approved ocean beach sites or upland disposal islands between November 16th and March 31st or April 30th depending on location, with no environmental window for dredging the waterway itself. The solicitation is set aside only for small businesses with a contract value estimated between $5-10 million. The North American Industry Classification System code is 237990 and the size standard is $37 million. The bid opening date will be specified in the solicitation available on www.sam.gov using number W912PM23B0016. Additional contacts are provided for questions.
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SOLICITATION NO.:
CONTRACT NO.:
ISSUE DATE:
WILMINGTON DISTRICT
ATLANTIC INTRACOASTAL WATERWAY
MAINTENANCE DREDGING,
FY24 COMBINED CONTRACT
NORTH CAROLINA
W912PM23B0016
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28 MAY 2023
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US Army Corps of Engineers ®
Approval Recommended: *
Approved: *
DATE
DATE
SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION
AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDEXED ON SHEET GI01.
CHIEF, ENGINEERING BRANCH
* THIS PROJECT WAS DESIGNED BY THE U.S. ARMY CORPS OF ENGINEERS,
WILMINGTON DISTRICT. INDIVIDUALS WHOSE SIGNATURES AND REGISTRATION
DESIGNATIONS APPEAR ON THESE DOCUMENTS ARE OPERATING WITHIN THE
SCOPE OF THEIR EMPLOYMENT. SIGNATURES ARE REQUIRED BY ER 1110-1-8152.
CHIEF, DESIGN and GENERAL ENGINEERING SECTION
AMENDMENTS:
JUNE 2023
JUNE 2023
Carolina Beach
Wilmington
Topsail Beach
Morehead City Beaufort
Washington
Jacksonville
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INDEX OF DRAWINGS
SHEET NO. TITLE
G001 COVER SHEET
GI001 LOCATION MAP AND INDEX OF DRAWINGS
CN101 SECTION 1 TANGENT G & WIDENER (OPTION) DREDGING LAYOUT
CN102 SECTION 1 TANGENT G & WIDENER (OPTION) PLACEMENT AREA
CN103 BROWN'S INLET SECTION 2 TANGENT F DREDGING LAYOUT
CN104 BROWN'S INLET SECTION 2 TANGENT F PLACEMENT AREA MAP
CN105 SECTION 3 TANGENT 8 DREDGING LAYOUT
CN106 SECTION 3 TANGENT 8 PLACEMENT AREA DA 203
CN107 SECTION 4 TANGENT 1 DREDGING LAYOUT
CN108 SECTION 5 TANGENT 3 DREDGING LAYOUT
CN109 SECTION 5 TANGENTS 4 & 4A DREDGING LAYOUTS
CN110 CAROLINA BEACH PLACEMENT AREA
CN111 LOCKWOODS FOLLY INLET CROSSING & WIDENER (OPTION)
CN112 LOCKWOODS FOLLY TANGENT 11 PLACEMENT AREA
CN113 PLACEMENT AREA DA 203
CN114 U.S. COAST GUARD STATION OAK ISLAND DREDGING LAYOUT (OPTION)
CN115 U.S. COAST GUARD STATION OAK ISLAND PLACEMENT AREA
CN116 PLACEMENT AREA DA 277 (OPTION)
CN501 EROSION & SEDIMENT CONTROL NOTES & DETAILS
S-001 STRUCTURAL NOTES
S-101 STRUCTURAL WEIR RISER SYSTEM PLAN AND SECTION
S-102 STRUCTURAL WEIR RISER FABRICATION ELEVATIONS
S-103 STRUCTURAL WEIR RISER FABRICATION SECTIONS AND DETAILS
S-104 STRUCTURAL WEIR RISER FABRICATION SECTIONS AND DETAILS
S-105 STRUCTURAL WEIR FOUNDATION SECTIONS AND DETAILS
S-106 STRUCTURAL WEIR RETURN PIPE ANCHORAGE SECTIONS AND DETAILS
S-107 SPILLWAY MISCELLANEOUS DETAILS
S-108 STRUCTURAL GRATING DETAILS
SCALE IN MILES
20 300 10
SECTION 3 TANGENT 8
LOCKWOODS FOLLY INLET
LOCKWOODS FOLLY INLET WIDENER (OPTION)
USCG RANGE 1 AND 2 (OPTION)
PLACEMENT AREA 277 (OPTION)
SECTION 4 TANGENT 1
SECTION 5 TANGENT 3, 4, AND 4A
SECTION 1 TANGENT G
SECTION 1 TANGENT G WIDENER (OPTION)
AutoCAD SHX Text N
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NEUSE
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RIVER
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GREENE
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CARTERET
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WASHINGTON
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DARE
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TYRREL
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BEAUFORT
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PAMLICO
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CRAVEN
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HANOVER
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NEW
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ONSLOW
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JONES
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LENOIR
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DUPLIN
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PENDER
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BRUNSWICK
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COLUMBUS
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BLADEN
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SAMPSON
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MARTIN
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WAYNE
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PITT
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WILSON
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JOHNSTON
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EDGECOMBE
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NASH
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RIVER
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HYDE
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PAMLICO SOUND
35+90.29 35+00 5+00 15+00 30+00 20+00 0+00 25+00 10+00
N: 341650.32 E: 2571061.40
N: 341561.47 E: 2571047.44 N: 341252.34
E: 2573023.41
N: 341341.29 E: 2573037.38
N: 341218.31 E: 2573823.74
N: 341127.29 E: 2573822.79
N: 341770.51 E: 2570292.94
N: 341684.37 E: 2570261.81
CAN 45A CAN B
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N: 341409.90 E: 2570721.80 N: 341012.79
E: 2573260.70
N: 341209.60 E: 2574985.11
N: 341272.40 E: 2575093.78
(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
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1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
3. PROJECT SURVEYED 12 SEP. 2022 WITH DISTRICT SURVEY VESSEL "BEAUFORT".
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: LT DM 45
5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS
MADE ON THE DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE
GENERAL CONDITIONS EXISTING AT THAT TIME.
6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL, ACCURACY +/- 3 METERS.
EASTING AND NORTHING COORDINATES ARE IN FEET.
DESCRIPTION EASTING NORTHING
CAN 45A 2,571,908 341,405
CAN B 2,573,059 341,225
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS EMERALD
ISLE BEACH. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN102.
8. BORINGS ARE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT THE TIME IN WHICH
THEY WERE ORIGINALLY DRILLED. SUBSURFACE CONDITIONS WITHIN THE REGULAR
MAINTENANCE DREDGE PRISM MAY CHANGE OVER TIME DUE TO PERIODIC REMOVAL
OF MATERIAL AND SEDIMENTARY IN-SHOALING. HISTORIC SUBSURFACE INVESTIGATION
DATA IS AVAILABLE UPON REQUEST.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
OPTION AREA TO BE DREDGED
-12.0
NOTES LEGEND
CN101
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ID
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BORING LOCATION
C N
XX
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Se c1
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CHANNEL PRISM LINE
CHANNEL CENTERLINE
SECTION 1 TANGENT G
CENTERLINE OFFSET
BI-AIWW-08-V-3
BI-AIWW-08-V-2
BI-AIWW-08-V-1
LB-02-176
LB-02-179
BI-AIWW-08-V-4
SCALE 1" = 200'
Feet 0 400 800
AREA TO BE DREDGED
C O
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1. THE CONTRACTOR SHALL NOTIFY THE CONTRACTING OFFICER'S REPRESENTATIVE AND THE TOWN OF EMERALD ISLE
BEACH NO LESS THAN 15 DAYS PRIOR TO COMMENCEMENT OF PIPELINE PLACEMENT.
2. PRIOR TO PLACEMENT OF THE PIPE FOR THE INLET PIPELINE ROUTE, THE CONTRACTOR SHALL MEET ON SITE WITH THE CONTRACTING OFFICER'S REPRESENTATIVE AND A REPRESENTATIVE OF THE NORTH CAROLINA WILDLIFE RESOURCES COMMISSION NO LESS THAN 15 DAYS PRIOR, TO DETERMINE THE EXACT PIPELINE ROUTE ALONG THE
INLET SHORELINE.
3. VERTICAL DATUM NAVD 88. THE CONTRACTOR IS RESPONSIBLE FOR ESTABLISHING HORIZONTAL AND VERTICAL
CONTROL PRIOR TO PLACEMENT OF DREDGED MATERIAL IN THE DESIGNATED PLACEMENT AREA.
4. AREAS TO BE DREDGED -
5. HORIZONTAL DATUM NAD 1983.
6. PHOTOGRAPHY DATED: FEBRUARY 2023. COPYRIGHT 2023 MAXAR TECHNOLOGIES.
7. PLACEMENT OF DREDGED MATERIAL SHALL BEGIN ON THE BEACH IN THE VICINITY OF THE COORDINATES SHOWN ON THE DRAWING. DUE TO THE ONGOING CHANGES TO THE SHORELINE CAUSED BY OCEAN WAVES, THE EXACT BEGINNING POINT FOR PLACEMENT OF DREDGED MATERIAL WILL BE ESTABLISHED BY THE CONTRACTING OFFICERS REPRESENTATIVE IMMEDIATELY PRIOR TO THE START OF DREDGING AND PLACEMENT OPERATIONS. PLACEMENT OF THE BERM SHALL CONTINUE DOWN THE BEACH AS FAR AS THE QUANTITY OF DREDGED MATERIAL WILL ALLOW. THE WIDTH OF THE BERM MAY BE ADJUSTED AT THE DISCRETION OF THE CONTRACTING OFFICER'S REPRESENTATIVE.
8. ALL CONTRACTOR OPERATIONS SHALL BE PERFORMED IN A MANNER THAT AVOIDS DAMAGE TO EXISTING SANDBAGS, STRUCTURES, AND ROADS. SANDBAGS, STRUCTURES, AND ROADS DAMAGED BY THE CONTRACTOR OPERATIONS SHALL BE REPAIRED TO THE SATISFACTION OF THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE AT NO COST TO THE GOVERNMENT OR THE OWNERS OF THE DAMAGED PROPERTY. IN ORDER TO MINIMIZE THE RISK OF DAMAGE, WHEELED OR TRACKED EARTH MOVING EQUIPMENT SHALL NOT WORK CLOSER THAN 10 FEET FROM STRUCTURES DURING ALL WORK INCLUDING THE DISTRIBUTION AND MOVEMENT OF BEACH FILL MATERIAL. EXISTING SANDBAGS BELOW ELEVATION 6 FEET THAT LIE WITHIN THE BEACH LIMITS SHALL NOT BE COVERED WITH FILL. IN AREAS WHERE IT IS NOT POSSIBLE TO TIE INTO THE 6-FOOT CONTOUR, THE CONTRACTOR
SHALL CONSTRUCT THE BACKSLOPE TO THE NATURAL ANGLE OF REPOSE.
9. SEE PARAGRAPH, ENVIRONMENTAL WINDOWS IN SECTION 01 57 19 OF THE SPECIFICATIONS FOR ENVIRONMENTAL WINDOWS AND RESTRICTIONS. ALL WORK INCLUDING PIPE REMOVAL SHALL BE COMPLETED BY THE DATES IN THE
SPECIFICATIONS.
10. SURVEYS FOR PLACEMENT ARE REQUIRED PER SPECIFICATION SECTION 02 21 00.
NOTES
CN102
SE
C
TI
O
N
T
AN
G
EN
T G
W
ID
EN
ER
(O
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IO
N
PL
AC
EM
EN
T
AR
EA
C
N
XX
X_ Se c1 Ta nG _P la ce m en t.d w g
CEDAR POINT
SECTION 1 TANGENT G
SECTION 1 TANGENT F
SECTION 1 TANGENT H
CO
NN
EC
TI
NG
C
HA
NN
EL
U
SC
G C
H
AN
N
EL
BOGUE INLET
TOWN OF EMERALD ISLE
ATLANTIC OCEAN
APPROXIMATE LOCATION
OF PIPELINE ROUTE
APPROXIMATE START
OF BEACH PLACEMENT
N: 330643.15 E: 2573979.04
AREA TO BE DREDGED
Feet 0 2000 4000
SCALE 1" = 1000'
5,000'
AutoCAD SHX Text N.T.S.
AutoCAD SHX Text
SLOPE INTERCEPT
AutoCAD SHX Text
EXISTING GROUND
AutoCAD SHX Text N.T.S.
AutoCAD SHX Text
SLOPE INTERCEPT
AutoCAD SHX Text
EXISTING GROUND
AutoCAD SHX Text 100'
AutoCAD SHX Text
NATURAL SLOPE
AutoCAD SHX Text
TOP OF BERM +6.0' NAVD 88
AutoCAD SHX Text
TYPICAL BERM SECTION
AutoCAD SHX Text
TRANSITION DETAIL
AutoCAD SHX Text N.T.S.
AutoCAD SHX Text LENGTH WILL BE DETERMINED DURING CONSTRUCTION AND WILL BE DEPENDANT ON QUANTITY OF MATERIAL PLACED ON BEACH
AutoCAD SHX Text
TIE INTO EXISTING 6' NAVD 88 CONTOUR OR EXISTING GROUND ELEVATION
AutoCAD SHX Text
TIE INTO EXISTING 6' NAVD 88 CONTOUR OR EXISTING GROUND ELEVATION
AutoCAD SHX Text
100'WIDE CONSTRUCTION BERM
AutoCAD SHX Text
100'WIDE CONSTRUCTION BERM
AutoCAD SHX Text 500'
5000' APPROXIMATE LIMITS OF DISPOSAL AREA
"63"
"60"
2530500
313000 2529500
315000 2530500
2528500
313000
315500 2531500
"62" 90+0095+00100+00105+00115+00 110+00120+00135+00 125+00130+00140+00145+00
-12
N: 313880.12 E: 2529647.19
N: 313818.07 E: 2529711.84
N: 312581.48 E: 2528400.78
N: 312519.33 E: 2528465.54
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3 -11 9
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-9
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-1 7
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-12
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-8
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1 -13
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9-5
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-8
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-12
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-6
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-8
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-7
-2
-8
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-12
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-6
-8
-7
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-8
-14 2-12
-10
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-9 1-9
-8
-8
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-11 6
-17
-12
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-7
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-7
-10
-7
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-1 6
-12
-4
-11 9
-11 8
-14
-12
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-2
-14
-2
-11 3
-6
-2
-11 0
-9 4 -13
-7
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-8
-8
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-3
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-13
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3-3
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-10
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-8
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-10
-8
-8
-8 5 -8
-12
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-3
-12
-11 6
-13
-2
-12
-11 8
-7
-6
-9
-13
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-12
-8
-12
-7
-12
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-11 8
-11 4
-8
-5
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-2
-11 4
-12
-14
-7
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-11 9
-9
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-6
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-11 4
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-8
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-8
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-11 4
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6 -11 8
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-8
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-7
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-12
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-7
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-11 8
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-7
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-6
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-7
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-7
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-11 5 -7
-1 9
-8
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-4
-9 3-5
-16
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6 -8
-1 3
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-8 9 -4
-13
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-12 2 -12
-12
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7-7
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-7
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9-12
"61"
318500 2533500
317500 2533500
316500 2532500
2532500
317000
2534500
319500
2535500
319500
35+0040+0045+0050+0055+0060+0065+0070+0075+0080+0085+0090+00
-12
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N: 319941.04 E: 2535463.13
N: 319878.87 E: 2535527.93
N: 318642.73 E: 2534217.25
N: 318580.56 E: 2534282.04
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1-12
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5-12
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-17
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-18
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-12
-11 9
-12
-12
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-12
-15
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-11 5
-4
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-9
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5-18 0 -11 1
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-13
0-12
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5-12
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-8
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8 -13
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4-15
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4-17
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6 -5
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-3
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9-12
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4-13
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N: 318137.67 E: 2533732.58
N: 318075.49 E: 2533797.37
N: 317416.14 E: 2533040.19
N: 317353.97 E: 2533104.98
(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
N.T.S.
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1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
3. PROJECT SURVEYED 26 APR.. 2023 WITH DISTRICT SURVEY VESSEL "ROGERS".
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: LT DM 61
5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS
MADE ON THE DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE
GENERAL CONDITIONS EXISTING AT THAT TIME.
6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL, ACCURACY +/- 3 METERS.
EASTING AND NORTHING COORDINATES ARE IN FEET.
DESCRIPTION EASTING NORTHING
BUOY 62 2,528,406 312,660
BUOY 60 2,529,045 313,316
LT DM 61 2,532,348 316,560
BUOY 63 2,528,580 312,597
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS ONSLOW
BEACH. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN104.
8. BORINGS ARE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT THE TIME IN WHICH
THEY WERE ORIGINALLY DRILLED. SUBSURFACE CONDITIONS WITHIN THE REGULAR
MAINTENANCE DREDGE PRISM MAY CHANGE OVER TIME DUE TO PERIODIC REMOVAL
OF MATERIAL AND SEDIMENTARY IN-SHOALING. HISTORIC SUBSURFACE INVESTIGATION
DATA IS AVAILABLE UPON REQUEST
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
CN103
BR
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D R
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BORING LOCATION
Feet 0 400 800
C N
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Se c2
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BBRAIWW-07-V-3 BBRAIWW-07-V-4 BBRAIWW-07-V-5 BBRAIWW-07-V-7
BBRAIWW-07-V-7
BBRAIWW-07-V-8
BBRAIWW-07-V-9
BBRAIWW-07-V-10
BBRAIWW-07-V-11
BBRAIWW-07-V-12
BBRAIWW-07-V-13
CHANNEL PRISM LINE
CHANNEL PRISM LINE
CHANNEL CENTERLINE
CHANNEL CENTERLINE
SCALE 1" = 200'
SECTION 2 TANGENT F
CENTERLINE OFFSET
SECTION 2 TANGENT F
CENTERLINE OFFSET
SECTION 2 TANGENT F
APPROXIMATE
LOCATION OF
PIPELINE ROUTE
TANGENT E
SECTION 2
500'
3000' APPROXIMATE LIMITS OF BEACH PLACEMENT AREA
75' WIDE
CONSTRUCTION
BERM
75' WIDE
CONSTRUCTION
BERM
500'
TIE INTO EXISTING
5' NAVD88 CONTOUR
TIE INTO EXISTING
5' NAVD88 CONTOUR
6'6' 6'6'
EXISTING BEACH NATURAL SLOPE
ELEV. 6' NAVD88
ONSLOW BEACH
75'
BR
O
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IN
LET
A T L A N T I C O C E A N
TANGENT D
SECTION 2
33+00 0+005+0010+0015+0020+0025+0030+00
0+00 5+00
10+00 15+00
20+00 25+00
30+00 35+00
40+00 45+00
50+00 55+00
60+00 65+00
70+00 75+00
80+00 85+00
90+00 95+00
100+00
105+00
110+00
115+00
120+00
125+00
130+00
135+00
140+00
145+00
150+00
155+00
160+00
165+00
170+00
175+00
180+00
185+00
190+00
195+00
200+00
205+00
210+00
215+00
220+00
225+00
230+00
235+00
APPROXIMATE
MHW
3000'
APPROXIMATE LIMITS OF BEACH PLACEMENT TO
BEGIN AT STATION 3+00. FILL MATERIAL SHALL
BE PLACED AT TYPICAL BEACH PLACEMENT
SECTION UNTIL MATERIAL TO BE DREDGED IS
EXHAUSTED. WIDTH OF TYPICAL BEACH
PLACEMENT SECTION MAY BE ADJUSTED AT
THE DISCRETION OF THE C.O.R. TO ASSURE
MATERIAL PLACEMENT WITHIN THE LIMITS
INDICATED.
TYPICAL BEACH PLACEMENT SECTION
N.T.S.
TRANSITION DETAIL
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STATIONING
AREA TO BE DREDGED
10+00
NOTES LEGEND
1. THE PIPELINE ROUTE SHOWN IS APPROXIMATE. PRIOR TO PLACEMENT OF PIPE, CONTRACTOR SHALL MEET ON SITE 15
CALENDAR DAYS BEFORE WORK IS TO BEGIN WITH THE CONTRACTING OFFICER OR HIS/HER DESIGNATED
REPRESENTATIVE TO DETERMINE THE EXACT PIPELINE ROUTE.
2. THE EXACT BEGINNING POINT FOR PLACEMENT OF DREDGED MATERIAL ON THE BEACH WILL BE ESTABLISHED BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE IMMEDIATELY PRIOR TO START OF DREDGING AND
BEACH PLACEMENT OPERATIONS.
3. HORIZONTAL DATUM NAD 1983.
4. VERTICAL DATUM NAVD88. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING VERTICAL CONTROL PRIOR TO
PLACEMENT OF DREDGED MATERIAL IN DESIGNATED PLACEMENT AREA.
5. PHOTOGRAPHY DATE: 12 MARCH 2021, COPYRIGHT 2021 DIGITAL GLOBE
6. FOR DETAILS OF AREA TO BE DREDGED, SEE SHEET CN103.
7. THE AREA TO BE DREDGED IN SECTION 2 TANGENT F AND THE PIPELINE ROUTE ARE WITHIN THE HIGHLY ACTIVE GROUND AND AIR TO GROUND FIRING RANGES OF THE U.S. MARINE CORPS. SPECIAL CONTRACTOR REQUIREMENTS FOR WORKING IN THIS AREA ARE PROVIDED IN PARAGRAPHS "ORDER OF WORK", AND "NAVAL FIRING EXERCISES" OF SECTION 35 20 23 OF
THE SPECIFICATIONS.
8. IF UNEXPLODED ORDNANCES ARE ENCOUNTERED THE CONTRACTOR SHALL FOLLOW SECTION 35 20 23 PARAGRAPH "UNEXPLODED ORDNANCE" AND CONTACT CAMP LEJEUNE EOD TEAM AT (910)-451-3064 EXT. 4449.
9. THE CONTRACTOR SHALL BEGIN PLACEMENT OF DREDGED MATERIAL ON THE BEACH AT THE EAST END OF THE DESIGNATED PLACEMENT AREA OR AS DIRECTED BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE. DUE TO ONGOING CHANGES TO THE SHORELINE CAUSED BY OCEAN WAVES, THE EXACT BEGINNING POINT AND BERM WIDTH FOR PLACEMENT OF DREDGED MATERIAL WILL BE ESTABLISHED BY THE CONTRACTING OFFICER'S REPRESENTATIVE IMMEDIATELY PRIOR TO START OF DREDGING AND PLACEMENT OPERATIONS. PLACEMENT OF THE 75 FOOT WIDE BERM SHALL CONTINUE DOWN THE BEACH AS FAR AS THE QUANTITY OF DREDGED MATERIAL WILL ALLOW.
10. ONSLOW BEACH IS CONSIDERED SUITABLE NESTING HABITAT FOR SHORE BIRDS AND SEA TURTLES. ALL WORK ON THE BEACH INCLUDING PIPE REMOVAL SHALL BE COMPLETED BY 31 MARCH 2024. SEE PARAGRAPH ENVIRONMENTAL WINDOWS OF SECTION 01 57 19 OF THE SPECIFICATIONS FOR ENVIRONMENTAL WINDOWS AND RESTRICTIONS.
11. CONTRACTOR SHALL PROVIDE A MINIMUM 8 WEEKS NOTICE PRIOR TO DREDGING & PLACEMENT WORK TO COORDINATE SCHEDULING WITH THE CONTRACTING OFFICER AND HIS/HER REPRESENTATIVE, AND USMC RANGE CONTROL.
12. CONTRACTOR SHALL POST SIGNS AND TEMPORARY FENCES IN AND AROUND ACTIVE ONSHORE WORK AREAS IN
ACCORDANCE WITH SPECIFICATION 01 35 26.
13. SURVEYS FOR PLACEMENT ARE REQUIRED PER SPECIFICATION SECTION 02 21 00.
SCALE: 1" = 1000'
SCALE IN FEET
1000 2000 30002000 1000 0
CN104
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FY
.d w g
N: 309,806 E: 2,529,783
N: 308,024 E: 2,527,005
AutoCAD SHX Text N
N
15+00 50+00 25+00 10+00 5+00 40+00 45+00 0+00 20+00 35+00 30+00
N: 219046.93 E: 2392732.04
N: 218973.74 E: 2392784.51
N: 218744.69 E: 2392317.33
N: 218687.05 E: 2392391.15
N: 220637.21 E: 2394914.02
N: 220564.40 E: 2394967.08
N: 221285.10 E: 2395802.97
N: 221212.30 E: 2395856.03
N: 221638.49 E: 2396287.85
N: 221565.50 E: 2396340.70
LT DM 100
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(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
N.T.S.
70+00 75+00 85+00 80+00 60+00 105+00 95+00 55+00 110+00100+00 90+00 65+00
N: 222286.34 E: 2397176.75
N: 222213.57 E: 2397229.87
N: 222698.68 E: 2397742.51
N: 222625.86 E: 2397795.57
N: 224524.55 E: 2400247.74
N: 224451.72 E: 2400300.82
N: 224819.04 E: 2400651.81
N: 224746.21 E: 2400704.89
B 99A B 99
MB 270
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-8 0
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-17 2 -12 5
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-11 5
-13 1
-12 3
-14 1
-6 8 -6 1
-11 0
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-9 7
-10 6 -13 7
-11 3 -12 8
-6 8 -8 9
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-10 2
-16 0
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-12 2
-5 5
-8 5 -8 6
-13 3
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-7 8
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-13 9
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-12 5 -10 8
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-8 4
-7 6
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-12 6
-15 0
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-9 7
-13 4
-6 3
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-8 0
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-9 7
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-11 8
-7 4 -13 5
-7 1
-10 9
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-10 8
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-12 3
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-13 3
-12 1
-14 9
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-13 6
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-11 2
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-14 5
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-11 9
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-11 6
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-17 8
-7 6 -7 9 -6 2
-7 9
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-15 3-11 3
-17 1
-12 7
-7 9
-7 8
-21 4
-7 5
-9 9
-15 5
-17 1
-5 6
-13 5
-12 1 -13 2
-11 4
-11 4
-7 0
-16 3
-7 2 -7 8 -6 5
-17 5
-12 9
-8 1
-6 5-8 2
-11 1
-12 1
-13 4
-13 3
-13 5
-7 7
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-6 9
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-13 0
-8 3
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-17 1
-8 7 -16 3
-7 5
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-9 1
-13 4
-7 4 -7 4 -9 5
-14 8
-7 1 -12 1
-10 7
-7 5
-6 2
-9 7
-16 1 -8 2
-6 1
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-14 8
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-13 4
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-11 4 -15 3
-12 4
-8 8 -9 2
-7 7
-12 8
-8 0
-9 7
-11 2
-11 6
-10 7 -13 0 -12 1-12 2
-11 7
-8 0
-7 5 -9 4
-8 2
-12 7 -15 6
-10 1
-11 8
-7 1
-6 8
-6 4
-8 2
-13 5
-12 5
-10 8
-6 8
-10 4 -14 1
-11 7
-7 6 -7 9
-13 0
-9 3
-16 1
-8 2
-18 0
-12 4
-10 9 -14 6
-10 8
-9 0
-8 6
-15 0
-9 1 -6 5
-15 3 -20 7
-7 6 -8 4
-13 7-11 5 -4 7
-10 9
-5 8
-7 9
-8 4
-10 2
-7 4
-11 1 -14 6
-9 1
-12 3
-12 4
-13 4 -12 3
-10 9
-12 6 -9 6
-13 6 -13 7
-8 5
-12 2
-12 3 -12 5
-20 0
-11 0
-14 7
-18 0
-11 5
-8 3 -6 3
-8 0
-10 5 -12 7 -13 1
-14 8
-10 0
-9 2
-6 3
-11 9
-8 1
-11 8 -14 7
-11 7
-15 5
-11 4
-7 3
-11 9
-13 1
-6 2 -7 5
-14 2
-11 7
-18 9
-7 1 -9 7
-10 5
-11 6
-7 2
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-15 5
-4 5
-14 2
-6 1
-12 4
-17 3
-14 5
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XX
XX
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1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
3. PROJECT SURVEYED 03 APRIL 2023 WITH DISTRICT SURVEY VESSEL "SANDERSON".
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: MB 270
5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS
MADE ON THE DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE
GENERAL CONDITIONS EXISTING AT THAT TIME.
6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL, ACCURACY +/- 3 METERS.
EASTING AND NORTHING COORDINATES ARE IN FEET.
DESCRIPTION EASTING NORTHING
LT DM 100 2,392,319 218,792
B 99A 2,397,754 222,602
MB 270 2,400,301 224,679
B 99 2,400,451 224,554
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS
PLACEMENT AREA 203. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN106.
8. BORINGS ARE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT THE TIME IN WHICH
THEY WERE ORIGINALLY DRILLED. SUBSURFACE CONDITIONS WITHIN THE REGULAR
MAINTENANCE DREDGE PRISM MAY CHANGE OVER TIME DUE TO PERIODIC REMOVAL
OF MATERIAL AND SEDIMENTARY IN-SHOALING.HISTORIC SUBSURFACE INVESTIGATION
DATA IS AVAILABLE UPON REQUEST.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
CN105
SE
C
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D R
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BORING LOCATION
C N
5_
Se c3
Ta n8
.d w g
CHANNEL PRISM LINE
SECTION 3 TANGENT 8
CENTERLINE OFFSET
CHANNEL CENTERLINE
CHANNEL PRISM LINE
SECTION 3 TANGENT 8
CENTERLINE OFFSET
CHANNEL CENTERLINE
SECTION 3 TANGENT 9
TOP-10-V-01
TCAIWW-07-V-1
TOP-10-V-02
TCAIWW-07-V-2 TOP-V-09-33
TOP-V-09-31
TOP-V-09-30 TCAIWW-07-V-3
TOP-V-09-27
Feet 0 400 800
SCALE 1" = 200'
GENERAL NOTES:
THE GOVERNMENT FURNISHED PLACEMENT AREA
FOR DREDGED MATERIAL IS DISPOSAL AREA 203.
FOR LOCATION SEE THIS SHEET.
AREA TO BE DREDGED SHOWN THUS -
THE CONTRACTOR SHALL MEET ONSITE WITH THE
CONTRACTING OFFICER'S REPRESENTATIVE TO OBTAIN
APPROVAL OF THE PIPELINE ROUTE TO THE PLACEMENT AREA
AND INITIAL DISCHARGE POINT 15 CALENDAR DAYS PRIOR TO
COMMENCEMENT OF DREDGING AND PLACEMENT OPERATIONS.
HORIZONTAL DATUM: NAD 1983. VERTICAL DATUM:
MEAN LOWER LOW WATER (M.L.L.W.).
THE CONTRACTOR SHALL BE RESPONSIBLE FOR
ESTABLISHING HORIZONTAL AND VERTICAL CONTROL.
PHOTOGRAPHY DATED: JANUARY 2023. COPYRIGHT
2023 MAXAR.
FOR DETAILS OF AREAS TO BE DREDGED,
SEE SHEET CN105. FOR DETAILS OF THE PLACEMENT
AREA SEE SHEET CN113.
1.
2.
3.
4.
5.
6.
7.
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Feet 0 1000 2000
APPROXIMATE PIPELINE ROUTE
PLACEMENT AREA DA203
SECTION 3 TANGENT 8
HAMPSTEAD
AREA TO BE DREDGED
AREA TO BE DREDGED
SCALE 1" = 500'
175+00150+00 185+00135+00 145+00 180+00140+00 160+00130+00 170+00155+00 165+00
N: 128424.42 E: 2339820.70
N: 128400.87 E: 2339907.56
N: 132296.78 E: 2340810.35
N: 132271.27 E: 2340896.68
-9
-8
-11
-8
-11
-9 9 -7
-7
-6
-5
-5
-6
-5
-8
-7
-7
-8
-8
-4
-9
-4
-10
-8
-11
-8
-9
-7 0-11
-5
-5
-11
-7
-11
-8
-8
-8
-7
-9
-7
-7
-7
-5
-5
-9
-8
-6
-8
-7
-8
-10
-10
-5
-5
-8
-7
-8
-6 9-7
-8
-8
-7
-8
-7
-6
-7
-9
-5
-8
-8
-7
-7
-7
-4
-8
-7
-4
-10
-6
-9
-7
-7
-7
-7
-7 4-7
-6
-6
-10 4 -12
-5 6 -6
-4
-7
-8
-7
-9
-10
-10
-9
-9 3 -7
-9
-9
-9 4-9
8 -6
-5
-4
-7
-4
-7
-7
-7
-6
-7
-9
-7
-10
-4
-5
-7
-5
-7
-9
-10
-9
-7
-5
-8
-9
-8
-6 3 -7
-5 7 -6
-10
-8
-8
-7
-4
-9
-4
-9
-10
-6
-7
-7
-7
-6
-7
-9
-9
-5
-8
-6
-7
-11
-7
-5
-8
-8
-9
-8
-5
-8
-8
-5
-9
-7
-7
-10
-6
-5
-6
-6
-8
-8
-6
-7
-7
-7
-7
-6
-9
-8
-8
-5
-7
-4
-7
-7
-9
-6
-7
-8
-7
-7
-7
-6
-8
-8
-4
-7
-6
-3
-7
-7
-7
-9
-7
-9
-7
-6
-9
-7
-7
-7
-7
-7
-7
-7
-9
-9
-8
-9
-4
-8
-9
-7
-9
-5
-6
-6
-6
-7
-5
-7
-6
-4
-6
-4
-6
-6
-8
-8
-6
-7
-7
-9
-6
-5
-7 6-7
8 -4
-9
-11
-4
-4
-4
-5
-7
-6
-8
-7
-7
-4
-9
-9
-9
-7
-7
-10
-4
-7
-5
-8
-7
-7
-10
-8
-7
-8
-7 4 -7
-5
-13
-8
-6
-7
-5
-6
-7
-6
-12
-5
-8
-9 4 -7
-6
-8
-6 3-8
-5
-8
-9
-5
-7
-5
-11
-5
-10
-8
-7
-10
-8
-7
-9
-10
-6
-9
-4
-7
-8
-5
-12
-8
-5
-7
-8
-7
-11
-7
-4
-4
-7
-7
-6
-8 6 -6
4-5
-8
-6
-6
-7
-8
-7
-6
-7
-14
-7
-7
-8
-6
-7
-9
-8
-7
-7
-10
-10
-9
-6
-7
-9
-7
-7
-6
-9
-7 8 -7
-8
-5
-5
-7
-9
-6
-9
-6 3-3
-8
-7
-10
-6
-6
-7
-7
-10
-6
-10
-7
-7 1-13
-8
-7
-5
-11
-8
-7
-9
-3
-4 6-7
-5 2-8
-8
-8
-9
-4
-7
-8
-5
-8
-10
-8
-4
-5
-9
-9
-10
-7
-7
-8
-8
-4
-8
-7
-9
-7
-8
-7
-8
-5
-4
-8
-8
-6
-9
-8
-7
-7
-11
-6
-6
-8
-7
-4
-7
-5
-5
-6
-5
-7
-7
-7
-7
-6
-7 6 -8
-7
-5
-5
-9
-7
-7
-4
-7
-5
-8
-9
-7
-7
-7
-5
-5
-3
-8
-5
-7 4 -8
-9
-8
-7
-5
-7
-10
-9
-7
-6
-9 0 -8
1-7
-7
-9
-7
-7
-7
-7
-7
-9
-6
-7
-7
-5
-6
-6
-12
-8 1-9
-8
-7
-7
-4
-8
-5
-7
-8
-8
-10
-9
-5
-7
-7
-8
-9
-8
-7 8-7
-9
-11
-8
-5
-10
-6
-6
-7
-4
-6
-9 3 -7
-6
-8
-8
-5
-8
-6
-10
-7
-6
-8
-11
-7
-7
-8
-6
-9
-7
-5
-10
-8
-6
-8
-4
"151"
"150"
"149"
-12
(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
STA. 75+00 - 90+00 &
STA. 110+00 - 146+00
N.T.S.
120+00105+00 75+00 95+00 80+00 130+00115+00 125+00 90+00 110+00100+00 85+00
N: 121549.17 E: 2338063.63
N: 121525.61 E: 2338150.53
N: 122999.49 E: 2338434.28
N: 122975.93 E: 2338521.17
N: 124936.33 E: 2338929.27
N: 124912.78 E: 2339016.15
-12
-11
-11
-6
-8
-11
-16
-14
-10
-10
-8
-10
-7
-7
-11
-7
-11
-9
-17
-5
-10
-14
-11
-9
-12
-13
-11
-13
-12
-7
-13
-7
-13 6 -8
-9
-7
-7
-8
-12
-12
-9
-11
-13
-11
-15
-11
-17
-14
-8
-7
-11
-14
-8
-9
-8
-12
-10 7-16
-11
-30
-10
-6
-15
-14
-6
-27
-11
-10
-16
-8
-9
-12
-13
-12
-15
-9 6-11
4 -10
-9
-23
-12
-25
-7
-8
-8
-11
-6
-10
-10
-15
-11
-6
-8
-9
-9
-16
-7
-12
-16
-7
-9
-11
-9
-15
-7
-10
-13
-8
-25
-10
-8
-19
-13
-9
-16
-13
-7
-9
-8
-8
-8
-11
-10
-20
-12
-7
-5
-10
-6
-9
-14
-12
-13
-7
-7
-7
-12
-8
-12 5 -11
-14
-10 0-20
-7
-14
-11 7-7
-7 4 -9
-11
-8
-8
-12
-12
-13
-7
-8
-11
-12
-21
-13
-7
-8
-13
-10
-7
-13
-5
-8
-7
-26
-10
-6
-11
-27
-7
-13
-8
-10
-7
-14
-13
-12
-13
-17
-22
-7
-9
-23
-6
-8
-14
-6
-7
-25
-18
-16
-15
-11
-11
-9
-12
-12
-8
-7 6-21
-11
-10
-8
-12
-19
-10
-7
-13
-11
-7
-16
-9
-6
-9
-6
-14
-11
-8
-7
-12
-13
-14 4 -11
-7
-15
-9
-9
-11
-8
-14
-6
-19
-10
-5
-11
-19
-7
-10
-11
-9
-13
-16
-15
-13 8-13
-26 3 -6
-11
-7
-7
-9
-12
-7
-9
-7
-21
-14
-13
-12
-8
-27
-12
-7
-13
-12
-7
-13
-10
-6
-7
-9
-8
-8
-9
-14
-23
-14
-27
-13
-11
-32
-11
-11
-13
-11
-6
-21
-11 9-17
3 -8
-14
-8
-8
-10 0-12
-12
-7
-13
-5
-23
-14
-26
-8
-9
-6
-23
-14
-12
-8
-13
-12
-13
-8
-13
-7
-10
-12 8-9
-25
-7 8 -9
-29
-12
-9 5-10
-10
-13
-6
-9
-10
-16
-27
-14
-9
-8
-8
-8
-9
-8
-6
-14
-12
-12
-10
-9
-26
-8
-18
-16
-3
-9 0 -9
-6
-16
-12
-11
-12
-10
-14
-9
-12
-9
-12 0-13
-9
-12
-6 2-13
-20 4 -6
4-9
-8
-9
-8
-7
-7
-12
-29
-9
-6
-9
-6
-12
-11
-11
-12
-14
-7
-8
-13 4-15
-11
-14
-13
-7
-13 6-11
-7
-24
-13
-13
-9 3-12
-12
-21
-26
-7
-6
-13
-11
-7
-11
-10
-11 9-15
-27
-20
-11
-11
-7
-12
-12
-8
-7
-7
-13
-8
-15
-11
-24
-11
-13
-11
-12
-9
-4
-13
-24
-12
-10
-7
-14
-7
-13
-10
-8
-11
-18
-27
-16
-11
-11
-10
-9
-9
-12
-14
-12
-12
-11
-8
-12
-7
-12 5 -13
-13
-11
-8
-13
-8
-18
-11
-12
-9 5 -11
-9
-10
-10
-12
-13 0 -8
-13 3-10
-8
-9
-4
-12
-29
-15
-10 0-13
-12 5-11
-8
-11
-6
-11
-13
-12
-14
-10
-11
-8
-6
-7
-16
-7
-12
-12
-12
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-9
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-18
-6
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-13
-9
-12
-13
-7
-11
-13
-12
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-14
-11
-11
-8
-15
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-13
-7
-14
-6
-8
-12
-13
-21
-12
-7
-7
-7
-5
-8
-10
-9 4 -8
-6
-9
-14
-8
-10
-11
-8
-25
-12
-10
-15
-7
-12
-11
-11
-12
-14
-9 6-14
-14
-7
-8
-8
-13
-9 5-12
-8
-7
-13
-14
-24
-7 8 -6
-6
-12
-7
-25
-10
-8
-15
-13
-10
-18
-12
-12
-25
-14
-8
-10
-11
-7
-13
-14
-15
-12 8-16
-6
-27
-7
-7
-26
-11
-8
-9
-13
-9
-8
-12
-8
-7
-13
-14
-12
-9
-8
-10
-9
-11
-10
-24 6 -9
-8
-26
-14
-15
-9
-11
-9
-12
-8
-10
-7
-14
-12
-6
-9
-7
-8
-5
-15
-8 5-12
-13
-17
-10
-13
-15
-14
-15
-8
-5
-10
-7
-8
-13
-7
-4
-7
-24
-17
-30 1 -12
-8
-12
-8
-13
-18
-8
-6
-8
-25
-9
-19
-16
-17
-13
-9
-8
-13
-11
-8
-10
-24 9 -16
-6
-11
-7
-11
-22
-7
-7
-7
-7
-12 7-11
-12
-7
-13
-10
-6
-8
-15
-12
-12
-11
-9
-10
-14
-14
-7
-11 9-12
-15
-11
-14
-12
-7
-8
-21
-11
-11
"155"
"153"
"152"
-1 2 -12
-12
-12
-12
-12
-1
(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
STA. 146+00 - 186+00
N.T.S.
C O
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SHEET ID
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AT
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2P M
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XX
XX
XX
S
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BE
R
1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
3. PROJECT SURVEYED 19 AUG. 2022 WITH DISTRICT SURVEY VESSEL "ROGERS".
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: INLET WATCH MARINA
5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS
MADE ON THE DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE
GENERAL CONDITIONS EXISTING AT THAT TIME.
6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL, ACCURACY +/- 3 METERS.
EASTING AND NORTHING COORDINATES ARE IN FEET.
DESCRIPTION EASTING NORTHING
BUOY 155 2,338,346 122,190
LT DM 153 2,338,955 124,570
DM 152 2,339,319 126,734
DM 151 2,340,029 128,671
DM 150 2,340,315 130,441
DM 149 2,340,944 132,416
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS CAROLINA
BEACH. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN110.
8. BORINGS ARE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT THE TIME IN WHICH
THEY WERE ORIGINALLY DRILLED. SUBSURFACE CONDITIONS WITHIN THE REGULAR
MAINTENANCE DREDGE PRISM MAY CHANGE OVER TIME DUE TO PERIODIC REMOVAL
OF MATERIAL AND SEDIMENTARY IN-SHOALING. HISTORIC SUBSURFACE INVESTIGATION
DATA IS AVAILABLE UPON REQUEST.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES
LEGEND
CN107
SE
C
TI
O
N
T
AN
G
EN
T
D R
ED
G
IN
G
L
AY
O U
T
BORING LOCATION
C N
7_
Se c4
Ta n1
.d w g
CHANNEL PRISM LINE
CENTERLINE OFFSET
SECTION 4 TANGENT 1
CHANNEL CENTERLINE
CHANNEL PRISM LINE
CENTERLINE OFFSET
SECTION 4 TANGENT 1
CHANNEL CENTERLINE
S4T1-22-V-003 S4T1-22-V-004
S4T1-22-V-005 S4T1-22-V-006 S4T1-22-V-007 S4T1-22-V-008 S4T1-22-V-009
S4T1-22-V-010
S4T1-22-V-002S4T1-22-V-001CBXWAIWW-V-09-6
CBXWAIWW-V-09-5
CBXWAIWW-V-09-4
CBIWW-07-V-8
CBIWW-07-V-7
CBAIWW-V-09-5
CBIWW-07-V-6
CBIWW-07-V-5
CBXWAIWW-V-09-3
CBAIWW-V-09-6
CBXWAIWW-V-09-2
CBAIWW-V-09-4
CBIWW-07-V-4
CBIWW-07-V-3
CBAIWW-V-09-3
CBIWW-07-V-2
CBAIWW-V-09-1
CBAIWW-V-09-2
CBIWW-07-V-1
CBXWAIWW-V-09-1
VO-1CBI00-1
CBI-03-V-2
CBI-06-V-2
Feet 0 400 800
SCALE 1" = 200'
D R
ED
G
E D
EP
TH
TR
AN
SI
TI
O N
L O
C
AT
IO
N
M
AT
C H
LI
N
E, S
EE
B
EL
O
W
M
ATC
H
LIN
E, SEE ABO
VE
15+00 10+00 0+00 20+00 5+00 23+57.2
-12 3
-9 8
-13 9
-9 4
-16 2
-13 2
-10 6
-8 8
-10 5
-8 5
-14 1
-12 1
-8 8
-18 5
-15 1
-13 2
-13 4
-13 4 -14 8
-10 0
-6 6
-12 8
-10 4
-12 0
-12 4
-20 6
-18 9
-21 1
-14 5
-12 6
-9 3
-26 3
-11 8
-18 9
-10 2
-13 2
-6 4
-13 4
-24 2
-10 8 -16 7
-8 4
-17 6
-19 7
-14 5
-18 8
-7 8-10 3
-22 5
-13 4 -14 3
-13 4
-12 8
-9 7
-17 0
-21 5
-11 9
-19 6
-10 5
-16 8
-9 7
-13 6
-15 0
-11 4
-22 3
-24 6
-7 1 -7 8
-17 7
-11 5-9 8
-9 7
-7 3
-16 6
-10 2
-9 6
-10 5
-8 3
-12 8
-17 4
-11 8
-8 6
-18 3
-14 2
-24 8
-9 4
-12 8
-10 7
-8 4
-7 9
-13 0
-7 7
-18 8
-17 5 -10 0
-11 2
-9 0
-13 1
-13 8
-15 8
-12 5
-15 7
-9 7
-14 5
-11 7
-9 8
-18 1
-9 4
-16 5
-10 6
-11 0
-18 9
-10 6
-13 9
-10 1
-13 1
-10 3
-22 8
-4 9
-11 6
-13 9
-16 0
-13 0
-10 6
-6 8
-20 7
-8 7
-19 5
-17 1
-14 8
-12 8
-15 5
-23 2
-10 1
-9 4
-10 9
-11 6
-19 2
-30 3
-14 1
-13 4
-11 6
-7 5
-10 1
-7 9
-9 7
-14 0
-12 8
-11 2
-8 1
-9 3
-18 1
-11 3
-9 6
-10 7
-11 2
-11 2
-8 1
-11 4
-13 9
-18 4
-7 5
-24 7
-15 1
-7 7
-13 2
-9 4
-17 7
-11 3 -13 4
-9 1
-20 9
-10 7
-21 5
-7 6
-8 2
-14 5
-9 2
-15 0
-10 1
-10 5
-9 3
-10 0
-15 6
-11 5
-10 6
-17 1
-10 6
-11 2
-12 9
-15 5
-8 1
-14 0
-8 2
-12 4
-19 3
-9 6
-10 4
-12 6 -14 1 -10 1
-10 1
-8 0
-22 9
-22 0
-9 8
-10 8
-10 8
-16 4
-11 0
-14 8 -12 7
-10 3
-12 6
-15 5
-8 4
-11 5 -14 5
-8 9
-8 3
-15 4
-14 6
-13 4
-23 0
-12 4
-10 1 -13 0
-26 9
-8 9
-28 7
-17 7
-15 3
-9 1
-12 7
-9 9
-9 0
-7 5
-15 1
-17 3
-12 1
-23 3
-8 6
-13 0
-14 4
-24 3
-13 2
-15 7
-5 7-10 4
-10 3
-17 7
-16 5
-12 3
-8 4 -13 2
-9 2
-11 3
-18 8
-6 9
-11 0
-10 3
-8 1
-10 8
-8 9
-23 7
-16 6
-7 6
-19 3
-10 7
-11 8
-8 7
-22 8
-19 5
-22 3
-7 2
-10 4
-15 1
-19 8
-6 5
-14 2
-8 7
-13 9
-14 7
-12 3 -10 9
-14 7
-22 0
-9 8
-11 7
-16 0
-6 7
-14 2
-16 0
-8 5
-21 0
-12 5
-16 6
-25 7
-17 2
-23 5 -22 7
-12 9
-13 8
-22 8
-8 9
-11 2
-8 1
-10 8
-16 9
-12 0
-18 5
-6 2
-14 3
-25 9
-10 9
-14 6
-15 4
-18 9
-7 2
-10 6
-17 0
-12 9
-10 2
-14 1
-14 7
-11 9
-12 0
-12 2
-13 6 -11 4-20 6 -12 4
-13 0
-14 0
-12 9
-15 5
-15 5
-12 2
-11 5
-14 4
-12 4
-11 1
-12 9
-9 2
-11 8
-11 4
-11 0
-24 2
-6 4
-13 2
-12 1
-14 7
-25 6
-15 1
-8 0
-8 3
-16 0
-10 3
-9 3
-4 5
-10 7
-27 1
-20 0
-12 1
-14 3
-19 5 -9 8
-9 2
-12 4
-29 7
-19 0
-13 0
-7 4
-14 0
-5 8
-17 3 -22 6
-11 7
-24 4
-8 0
-15 8 -17 8
-20 6
-12 5
-15 0
-13 2
-9 8
-8 4
-19 2
-13 4
-15 6
-21 1
-8 0
-11 7
-13 0
-21 8
-15 1
-13 3
-12 6
-13 7
-12 6
-14 5
-7 6
-15 1
-14 1
-11 6
-11 4
-15 4
-13 0
-15 7
-16 1
-10 3 -12 9
-18 8
-10 2
-15 3
-11 5
-21 1
-10 8
-10 9
-12 3
-21 1
-11 8
-18 4
-13 5
-9 6
-9 9
-10 0
-11 5
-13 6
-21 1
-13 0
-10 5
-19 8
-20 6
-8 8
-13 8
-10 3
-11 9
-6 8
-19 7
-6 9
-12 1
-9 6
-19 0 -28 7
-7 6
-13 5
-7 6
-10 5
-9 1
-16 6
-9 6
-14 6
-9 8
-12 2
-22 1
-9 1
-15 4
-10 3
-17 4
-23 2
-9 6
-15 4
-15 8
-9 6
-9 4
-21 8
-10 7 -6 4
-8 4
-15 9
-4 0
-28 7
-10 3
-11 5
-9 6
-10 0
-10 6
-15 2
-12 5
-17 1
-9 8
-13 9
-7 2
-11 8
-10 9
-10 8
-14 8
-11 0
-8 0
-9 4
-11 5
-9 8
-11 6
-20 1
-27 9
-20 8
-16 9
-12 0
-8 3
-11 8
-27 0
-13 4
-14 2
-11 9 -15 9
-20 6
-18 5
-9 8
-9 9
-10 4
-7 2
-12 9
-20 7
-14 6
-6 0
-16 2
-18 1
-11 3
-17 0
-8 3
-24 3 -23 4
-18 4
-10 0
-9 8
-13 6
-12 7
-14 3
-12 4
-8 4
-20 6
-8 3
-15 3
-19 0
-29 0
-7 9
-8 6
-12 0 -13 7
-5 2 -7 5
-9 4
-7 4
-7 4
-16 1
-6 9
-13 3
-15 6
-12 9
-11 8
-12 4
-6 4
-9 6
-13 3 -10 2
-13 7
-12 9
-12 9
-11 2
-9 4
-9 0
-14 2
-15 6
-14 9
-14 2 -11 2
-12 9
-12 8
-10 6
-11 1
-14 7-17 0
-9 5
-9 0
-13 3
-15 0
-9 3
-12 0
-8 5
-14 8
-11 7
-7 9
-15 3
-17 2
-14 4
-8 9
-19 7
-15 4
-11 7
-5 8
-15 3
-19 1
-6 8
-16 8
-11 5
-14 7 -9 2
-8 0
-10 3
-5 3
-8 8
-13 1
-14 0
-23 9
-10 4
-11 8
-10 8
-12 4
-13 2
-9 6 -12 5
-10 6
-14 9
-11 9
-14 8-14 7
-8 6
-8 7
-12 1
-15 9
-14 4
-12 8
-10 8
-8 8
-6 5
-12 1
-23 0
-14 1 -10 8
-5 8
-14 0
-9 1 -11 9
-19 3
-11 4
-16 7
-12 3
-11 7
-20 6
-7 0
-14 6
-14 0
-13 7
-11 3
-9 9
-15 1
-9 3
-19 3
-8 6
-14 1
-13 6
-18 7
-18 2
-8 8
-23 0
-17 4
-13 0
-15 1
-20 4
-11 0
-12 5
-11 5
-16 8
-9 4
-8 2
-9 2
-15 4
-15 1
-19 4 -10 2
-5 8
-29 2
-18 3
-13 4
-7 7
-11 7
-10 9
-10 8
-7 7
-7 2
-7 7
-22 6
-15 1
-12 0
-10 8
-13 4
N: 111697.11 E: 2327635.38
N: 111608.93 E: 2327659.06
N: 111909.16 E: 2329984.62
N: 111820.57 E: 2330005.29
LTB 163
DM 165
B 161AB 162A
B 162
-12
-12
-12-12
-12
(TYP)
2' ALLOWABLE
OVERDEPTH
DEPTHREQUIRED
'CHANNEL PRISM
LINE (TYP)
90'
M.L.L.W.
TYPICAL DREDGING DETAIL
N.T.S.
C O
N
TR
AC
T
N O
D
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B
Y:
D
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D B
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D R
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AW
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D D
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SHEET ID
B
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D
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F
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2 3 4 5 6 7 8 9 10
US Army Corps of Engineers
AT
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TR
AC
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TA
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W
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1. HORIZONTAL DATUM NAD 1983. VERTICAL DATUM MEAN LOWER LOW WATER (M.L.L.W.).
2. SOUNDINGS ARE EXPRESSED IN FEET AND TENTHS AND REFER TO NOAA'S REPORTED
MEAN LOWER LOW WATER (M.L.L.W.) RELATIVE TO THE 1983-2001 TIDAL EPOCH.
3. PROJECT SURVEYED 05 JAN. 2023 WITH DISTRICT SURVEY VESSEL "ROGERS".
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: INLET WATCH MARINA
5. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULT OF SURVEYS
MADE ON THE DATE INDICATED AND CAN ONLY BE CONSIDERED AS INDICATING THE
GENERAL CONDITIONS EXISTING AT THAT TIME.
6. NAVIGATION AIDS LOCATED BY SURVEY VESSEL, ACCURACY +/- 3 METERS.
EASTING AND NORTHING COORDINATES ARE IN FEET.
DESCRIPTION EASTING NORTHING
LTB 163 2,327,511 111,441
B 162A 2,327,854 111,620
DM 165 2,326,438 110,998
B 161A 2,328,934 111,722 B 162 2,329,940 111,955
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS CAROLINA
BEACH. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN110.
8. BORINGS ARE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT THE TIME IN WHICH
THEY WERE ORIGINALLY DRILLED. SUBSURFACE CONDITIONS WITHIN THE REGULAR
MAINTENANCE DREDGE PRISM MAY CHANGE OVER TIME DUE TO PERIODIC REMOVAL
OF MATERIAL AND SEDIMENTARY IN-SHOALING. HISTORIC SUBSURFACE INVESTIGATION
DATA IS AVAILABLE UPON REQUEST.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
CN108
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BORING LOCATION
Feet 0 400 800
C N
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Se c5
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CENTERLINE OFFSET
SECTION 5 TANGENT 3
SECTION 5 TANGENT 2
SECTION 5 TANGENT 4
CHANNEL PRISM LINE
CONNECTION CHANNELS -
RANGE 1
CHANNEL CENTERLINE
SCTAIWW-07-V-8
25+00 60+00 45+00 35+00 15+00 55+00 40+00 50+00 30+00 20+00
15+00
65+00 67+9.11
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-12 0
-15 6
-…
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