A21 - FY23_AIWW_North_RTA_Plans_Locked.pdf
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- Attached to
- Atlantic Intracoastal Waterway (AIWW) North
- Solicitation number
- W912PM22B0025
About this file
This solicitation is for maintenance dredging of the Atlantic Intracoastal Waterway (AIWW) North in North Carolina. The scope of work includes removal of approximately 386,000 cubic yards of shoaled material from AIWW channels between Wilmington and Morehead City to a depth of 12 feet plus 2 feet of allowable overdepth. Dredged material will be placed on approved ocean beaches and confined disposal islands between 16 November and 31 March or between 16 November and 30 April depending on the beach location. The total estimated value of this firm fixed price contract is between $10 million and $25 million. This is a 100% small business set-aside solicitation to be issued on or about 2 July 2022 with bid opening to be specified then. The North American Industry Classification System code is 237990 and size standard is $30 million. Offerors must register in the System for Award Management to be eligible for award.
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SOLICITATION NO.:
CONTRACT NO.:
ISSUE DATE:
WILMINGTON DISTRICT
ATLANTIC INTRACOASTAL WATERWAY
MAINTENANCE DREDGING,
NORTH CONTRACT
NORTH CAROLINA
W912PM22B0025
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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:
XXXX XX-XXX-20XX
2 JUNE 2022
2 JUNE 2022
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
C101 DISPOSAL AREA REHABILITATION SITE PLAN
CN101 BROWN'S INLET SECTION 2 TANGENT F DREDGING LAYOUT
CN102 BROWN'S INLET SECTION 2 TANGENT F PLACEMENT AREA MAP
CN103 SECTION 2 TANGENT H AND I INTERSECTION DREDGING LAYOUT
CN104 SECTION 2 TANGENT H AND I INTERSECTION PLACEMENT AREA MAP
CN105 CHANNELS TO JACKSONVILLE AND SECTION 2 TANGENT J PLACEMENT AREA MAP
CN106 CHANNELS TO JACKSONVILLE - TANGENT 2 DREDGING LAYOUT
CN107 CHANNELS TO JACKSONVILLE - TANGENT 1 DREDGING LAYOUT
CN108 SECTION 2 TANGENT J DREDGING LAYOUT
CN109 SECTION 2 TANGENT I DREDGING LAYOUT
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
CHANNELS TO JACKSONVILLE
SECTION 2 TANGENTS H, I, AND J
DISPOSAL AREA REHABILITATION SITE
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
5 10
10 0
10 5 0
N: 298264.82 E: 2496195.50
N: 298169.03 E: 2496265.75
N: 298110.32 E: 2496341.44
N: 298072.28 E: 2496387.89
N: 297987.44 E: 2496450.68
N: 297896.60 E: 2496506.23
N: 297860.87 E: 2496537.03
N: 297827.79 E: 2496606.70
N: 297833.42 E: 2496693.05
N: 297868.66 E: 2496767.40
N: 297884.09 E: 2496788.28
N: 298302.82 E: 2496017.06
N: 298286.94 E: 2496024.26
N: 298080.56 E: 2496034.29
N: 298074.28 E: 2496033.48
N: 297758.65 E: 2496256.59
N: 297756.26 E: 2496283.02
N: 297622.00 E: 2496542.60
N: 297606.81 E: 2496559.47
N: 297404.91 E: 2497168.00
N: 297401.50 E: 2497161.10
N: 297394.58 E: 2497210.01
15 15
HDPE PIPE OUTFALL
CENTER PT
N: 298236.58 E: 2495749.85
DIKE CENTERLINE
DIKE CENTERLINE
DIKE CENTERLINE
DIKE CENTERLINE
RISER CENTER PT AND
CHANNEL CENTERLINE
N: 298202.01 E: 2496076.29
EL: 4.0
CHANNEL CENTERLINE
N: 298122.61
E: 2496238.63
EL. 4.0
DREDGE PIPE REQUIRED
DISCHARGE POINT LOCATION
N: 297442.49 E: 2496987.55
TYPICAL SECTION NOTES:
TYPICAL DIKE SECTION
EXISTING
GROUND
OUTSIDE DIKED AREA
REQUIRED EL. 15'
INSIDE DIKED AREA
10'
CL
1' ALLOWABLE
OVERBUILD
REQUIRED FINISHED
GRADE
50' BORROW AREA SETBACK
CLEAR & GRUB
SEEDING, FERTILIZING,
& MULCHING LIMITS
CLEARING (EXTEND TO OPPOSITE OUTSIDE EDGE OF EXISTING DIKE)
1. SLOPE TOP OF NEW DIKE 2% TO THE INSIDE.
2. ALL DISTURBED AREAS BEYOND THE OUTSIDE TOE OF
THE NEW DIKE EMBANKMENT SHALL ALSO BE SEEDED,
FERTILIZED, AND MULCHED.
TEMPORARY SILT FENCE
NOT TO SCALE
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NOTES:
1. HORIZONTAL DATUM: NORTH CAROLINA STATE PLAN NAD83.
2. VERTICAL DATUM: NAVD88
3. CONTOUR INTERVAL ONE FOOT.
4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING HORIZONTAL AND VERTICAL CONTROL. AVAILABLE CONTROL POINTS IN THE VICINITY OF DISPOSAL AREA
CAN BE FOUND AT THE INTERNET SITE: http://www.ngs.noaa.gov/NGSDataExplorer/.
5. THE EXISTING CONTOURS SHOWN REPRESENT THE RESULT OF A LIDAR SURVEY PERFORMED 30 APRIL 2015.
6. PRIOR TO COMMENCEMENT OF WORK, TEMPORARY SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE PLAN OR AS DIRECTED BY THE CONTRACTING OFFICER OR
HIS/HER DESIGNATED REPRESENTATIVE. SEE SHEET CN501 FOR TEMPORARY SILT FENCE DETAILS.
7. CLEARING AND GRUBBING SHALL BE ACCOMPLISHED IN ACCORDANCE WITH SECTION 31 11 00.10 "CLEARING" OF THE SPECIFICATIONS. SEE TYPICAL DIKE SECTION ON
THIS PLATE FOR CLEARING AND GRUBBING LIMITS.
8. THE EXISTING SPILLWAY RISER AND 36" DIAMETER CORRUGATED GALVANIZED STEEL SPILLWAY PIPES SHALL BE REMOVED AND REPLACED WITH THE NEW RISER
STRUCTURE AND HDPE PIPE AS SHOWN ON SHEETS S-101 THROUGH S-109.
9. SEE TYPICAL SECTION FOR DIKE EMBANKMENT DETAILS. THE NEW DIKE EMBANKMENT SHALL BE CONSTRUCTED IN ACCORDANCE WITH SECTION 31 01 00 DIKE
EMBANKMENT OF THE SPECIFICATIONS. ALL FILL MATERIAL FOR THE NEW DIKE EMBANKMENT CONSTRUCTION SHALL COME FROM WITHIN THE INTERIOR OF THE DISPOSAL AREA PROVIDED THAT IT MEETS THE REQUIREMENTS FOR SATISFACTORY MATERIAL AS DESCRIBED IN SECTION 31 01 00 DIKE EMBANKMENT OF THE
SPECIFICATIONS.
10. UPON COMPLETION OF INSTALLATION OF THE NEW SPILLWAY RISER AND PIPE, NEW DIKE EMBANKMENT CONSTRUCTION AND PLACEMENT OF STOPLOGS IN RISERS TO AN ELEVATION AS DIRECTED BY THE CONTRACTING OFFICER'S REPRESENTATIVE, THE CONTRACTOR SHALL REMOVE THE TEMPORARY EARTH BERMS.
11. CUTS MADE THROUGH THE EXISTING DIKE EMBANKMENT FOR REMOVAL AND REPLACEMENT OF THE SPILLWAY PIPE AND FOR EQUIPMENT ACCESS INTO THE DISPOSAL AREA SHALL BE REPAIRED UPON COMPLETION OF EXCAVATION AND SPILLWAY INSTALLATION OPERATIONS.
12. ALL DIKE EMBANKMENT REPAIRS SHALL BE IN ACCORDANCE WITH SECTION 31 01 00 DIKE EMBANKMENT OF THE SPECIFICATIONS. REPAIRS SHALL BE MADE TO RESTORE
THE DIKE TO PRE-CONSTRUCTION LINES AND GRADES.
13. THE CONTRACTOR SHALL GRADE THE INTERIOR OF OF THE DIKED AREA TO ASSURE FREE DRAINAGE TO THE SPILLWAY RISERS.
14. WETLANDS LOCATED AROUND THE PERIMETER OF THE DISPOSAL AREA ARE PROTECTED BY LAW. EXCAVATION AND/OR FILLING OF WETLANDS WILL NOT BE ALLOWED.
WETLANDS DAMAGED BY TEH CONTRACT'S OPERATION SHALL BE RESTORED TO THE SATISFACTION OF THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE. RESTORATION SHALL ONLY COMMENCE FOLLOWING DIRECTION FROM THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE.
15. ALL SLOPES ARE 1V:3H UNLESS NOTED OTHERWISE.
16. DISPOSAL ISLAND IS PROPERTY OF THE STATE OF NORTH CAROLINA.
SLOPE LINES
CENTERLINE
20 MAJOR CONTOUR
LEGEND
MINOR CONTOUR
Feet 0 200 400
CHANNEL CENTERLINE
N: 298190.95 E: 2496122.57
EL. 4.0
"63"
"60"
2530500
313000 2529500
315000 2530500
2528500
313000
315500 2531500
2531500
316000
"62" 90+0095+00100+00105+00115+00 110+00120+00135+00 125+00130+00140+00145+00
N: 314023.41 E: 2529784.28
N: 313961.22 E: 2529849.10
N: 312320.09 E: 2528149.95
N: 312257.84 E: 2528214.82
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-12
5 -11 5
-7
-7
-7
-5
-12
-10
-7
-13
-9
-9
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-11 1
-7
-13
-10
6 -10
-12 0 -16
-11 8
-5
-6
-10
-8
-9
-8
-12
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-11 9
-12
-12
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-12-12-12
-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
N: 316702.25 E: 2532355.14
N: 316640.13 E: 2532419.88
N: 319003.50 E: 2534563.45
N: 318941.36 E: 2534628.20
-11 8 -14 2-12
-13
-13
-14
-7
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-14
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-13
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-10
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-13
-13
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-9
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-7
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-13
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-10
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-12
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-12
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-7
-13
-6
-13
-13
-12
-13
-13
-6
-11 6
-14
-12
-10
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-12
-11 3
-7
-5
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-10
-12
-17
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-13
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-10 9 -12
-8
-6
-7
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-14
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-11 9
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-11 5
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-13
-6
-13
-7
-7
-15
-12
-12
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-13
-13
-3
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-8
-13
-13
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-8
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-13
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-7
-15
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-12
-12
-13
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-13
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5-10
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-8
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-7 5 -13
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-12
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-11 8
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-6
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-13
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-17 1 -12
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-8
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-14
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-13
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-7
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-12
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-10
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-13
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-13
-9
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-12
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-10
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-8
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-8
-7
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-12
-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
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SHEET ID
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AT
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2P M
C
XX
XX
XX
M
O N
TH
X
XX
X
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 15 FEB. 2022 WITH DISTRICT SURVEY VESSEL "POTTER".
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 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.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
CN101
BR
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D R
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BORING LOCATION
Feet 0 400 800
C N
1_
Se cT an F_
X.
dw g
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
5'5' 5'5'
EXISTING BEACH NATURAL SLOPE
ELEV. 5' NAVD88
ONSLOW BEACH
75'
BR
O
W N
IN
LET
A T L A N T I C O C E A N
TANGENT D
SECTION 2
N: 309806 E: 2529783
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.
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
N.T.S.
C O
N
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N O
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B
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D
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XX
XX
XX
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XX
X
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 10
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. AREA TO BE DREDGED SHOWN THUS -
7. FOR DETAILS OF AREA TO BE DREDGED, SEE SHEET CN101.
8. 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", "NAVAL FIRING EXERCISES" AND "DISPOSAL OF DREDGED
MATERIAL" OF SECTION 35 20 23 OF THE SPECIFICATIONS.
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 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 2023. 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.
SCALE: 1" = 1000'
SCALE IN FEET
1000 2000 30002000 1000 0
CN102
BR
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SE
C
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PL
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2_ br ow n-in le t-pl ac em en t_
FY
.d w g
AutoCAD SHX Text N
N
N: 293618.08 E: 2506734.64
N: 293833.40 E: 2506339.16
N: 294011.98 E: 2506953.54
N: 294631.99 E: 2507485.48
N: 294574.35 E: 2507554.82
N: 294386.29 E: 2504533.49
"65A"
"66"
0+005+0010+0015+0020+0025+0030+0035+00
+0
+0
+0
+8
3.
JAX-V-21-001
JAX-V-21-002
JAX-V-21-003
JAX-V-21-004
JAX-V-21-005
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-8 7
-9 8
-14 0 -12 4-13 3 -7 9
-2 4
-10 7
-5 9
-11 3
-8 4
-8 8
-7 3 -4 1
-13 8 -12 7
-8 0 -13 6
-7 7-12 8 -12 8
-9 5
-9 5
-11 8
-11 8
-8 1
-5 0
-11 8
-8 1
-8 2
-13 1
-9 9
-6 1
-8 5
-12 3
-4 8
-14 1
-7 9
-9 8
-7 8
-8 8
-11 9
-9 5
-8 6
-9 1
-6 9
-13 7
-10 5
-8 9
-9 3
-12 4
-6 7
-11 2
-12 5
-13 1
-5 9
-9 9
-14 0
-9 5
-7 0 -12 1 -8 1
-10 3
-7 5
-6 5
-9 4
-11 9
-4 8
-7 6
-10 1
-13 4
-12 2
-12 4
-7 9
-11 9
-11 6
-12 9
-7 4
-9 2
-12 7
-12 8
-7 8
-7 4
-12 2
-8 9
-11 9
-9 6
-10 3
-11 9
-8 2
-8 5
-8 4 -9 3
-9 6
-9 3
-9 8
-7 8
-6 6-13 1
-12 5
-10 7
-6 9 -4 1
-6 3
-11 1
-8 2
-10 8
-8 6
-6 5
-9 0
-10 3
-8 0 -8 4
-11 9
-9 6
-9 1
-7 5-7 4
-14 3
-13 3
-9 7
-7 4 -10 4
-7 9
-8 9
-11 0
-7 5-10 2
-7 2
-6 1
-9 1
-9 9
-8 4
-12 5
-10 6
-8 0
-11 5
-9 0
-5 0
-8 7
-9 2
-9 6
-8 7
-7 1
-8 7
-10 3
-4 7
-9 9
-12 9
-12 6
-8 1
-9 9
-5 9
-9 6
-9 5
-12 0
-9 6
-6 3
-8 1
-9 8
-7 7
-7 8
-12 0
-7 4 -6 8
-7 2
-11 0
-10 2
-8 6
-7 7
-7 9
-13 0
-6 3
-5 6
-13 9
-8 6
-11 5
-7 8
-14 2
-11 2
-11 8
-6 6
-12 7
-9 8
-8 1
-12 4
-7 1
-12 3
-9 5
-6 1
-13 6
-12 9
-6 8
-3 6
-8 8
-11 0
-9 7
-7 4
-8 2
-8 7
-13 1
-7 9
-5 5
-2 3
-7 2
-12 6 -9 6
-9 4
-7 6
-6 7
-8 8
-10 4
-7 8
-7 8
-8 1
-7 6
-13 0
-10 7-13 3
-12 2
-7 5
-13 6
-8 2
-12
-12
-1
-12
N: 294300.20 E: 2504507.10
CHANNEL PRISM
LINE (TYP)
M.L.L.W.
3(TYP)
REQUIRED
' 2' ALLOWABLE
OVERDEPTH
DEPTH
VARIES
TYPICAL DREDGING DETAIL
N.T.S.
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 04 MARCH 2022 WITH DISTRICT SURVEY VESSEL
"POTTER" USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: DM 16
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 BUOY 65A 2,506,553 293,785
LT DM 66 2,503,872 294,611
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.
Feet 0 400 800
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
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CN103
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CHANNEL PRISM LINE
CHANNEL PRISM LINE
SECTION 2 TANGENT I
CHANNEL CENTERLINE
CENTERLINE OFFSET
CENTERLINE OFFSET
CHANNEL PRISM LINE
CHANNEL PRISM LINE
SECTION 2 TANGENT H
CHANNEL CENTERLINE
BORING LOCATION
C N
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Se ct
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N: 291463 E: 2505627
NATURAL SLOPE
SLOPE
INTERCEPT
SLOPE INTERCEPT
N.T.S.
250'
EXISTING GROUND
N.T.S.
TRANSITION DETAIL
500' 500'
TOP OF BERM +5.0' NAVD 88
5' 5' 5' 5'
TYPICAL BEACH PLACEMENT SECTION
2200' APPROXIMATE LIMITS OF BEACH PLACEMENT AREA
LENGTH WILL BE DETERMINED
DURING CONSTRUCTION AND WILL
BE DEPENDANT ON QUANTITY OF
MATERIAL PLACED ON BEACH
250' WIDE
CONSTRUCTION
BERM
250' WIDE
CONSTRUCTION
BERM
TIE INTO EXISTING
5' NAVD 88 CONTOUR
TIE INTO EXISTING
5' NAVD 88 CONTOUR
C O
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US Army Corps of Engineers
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XX
XX
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M
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XX
X
1,500'
2,200'
SECTION 2 TANGENT I
SECTIO
N 2
TA
NGENT H
APPROXIMATE LOCATION
OF PIPELINE ROUTE
APPROXIMATE LIMITS OF BEACH PLACEMENT AREA
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.
20001000
SCALE IN FEET
30002000
SCALE: 1" = 1000'
01000
ONSLOW BEACH
CN104
SE
C
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TA
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EN
T H
A N
D I
IN
TE
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SE
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TI
O N
PL
AC
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EN
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AR
EA
M
AP
1. THE PIPELINE ROUTE SHOWN IS APPROXIMATE. PRIOR TO PLACEMENT OF PIPE, CONTRACTOR SHALL MEET ON SITE 10 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.VERTICAL DATUM NAVD88. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING HORIZONTAL AND VERTICAL CONTROL PRIOR TO PLACEMENT OF DREDGED MATERIAL IN THE DESIGNATED
PLACEMENT AREA.
3. HORIZONTAL DATUM NAD 1983.
4. PHOTOGRAPHY DATE: FEBRUARY 2019, COPYRIGHT 2019 DIGITAL GLOBE.
5. AREA TO BE DREDGED SHOWN THUS -
6. FOR DETAILS OF AREAS TO BE DREDGED, SEE SHEET CN103.
7. THE CONTRACTOR SHALL BEGIN PLACEMENT OF DREDGED MATERIAL 1500' FROM THE OVERWASH AREA ON THE BEACH.
DUE TO ONGOING CHANGES TO THE SHORELINE CAUSED BY OCEAN WAVES, THE EXACT BEGINNING POINT FOR PLACEMENT OF DREDGED MATERIAL WILL BE ESTABLISHED BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE IMMEDIATELY PRIOR TO THE START OF DREDGING AND PLACEMENT OPERATIONS. PLACEMENT OF THE 250-FOOT WIDE BERM SHALL CONTINUE DOWN THE BEACH AS FAR AS THE QUANTITY OF DREDGED MATERIAL WILL ALLOW.
8. ALL WORK ON THE BEACH INCLUDING PIPE REMOVAL SHALL BE COMPLETED BY 31 MARCH 2023. SEE PARAGRAPH ENVIRONMENTAL WINDOWS OF SECTION 01 57 19 OF THE SPECIFICATIONS FOR ENVIRONMENTAL WINDOWS AND
RESTRICTIONS.
9. THE AREA TO BE DREDGED IN SECTION 2 TANGENT H AND I, 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", "NAVAL FIRING EXERCISES" AND "DISPOSAL OF
DREDGED MATERIAL" OF SECTION 35 20 23 OF THE SPECIFICATIONS
10. 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.
11. CONTRACTOR SHALL POST SIGNS AND TEMPORARY FENCES IN AND AROUND ACTIVE ONSHORE WORK AREAS IN
ACCORDANCE WITH SPECIFICATION 01 35 26.
NOTES
C N
4_
Ta nH
&I _D is po sa l.d w g
1,500'
BEACH PLACEMENT AREA REQUIRED
OFFSET FROM OVERWASH AREA
2495000 295000
NATURAL SLOPE
SLOPE
INTERCEPT
SLOPE INTERCEPT
N.T.S.
100'
EXISTING GROUND
N.T.S.
TRANSITION DETAIL
500' 500'
TOP OF BERM +5.0' NAVD 88
5' 5' 5' 5'
TYPICAL BEACH PLACEMENT SECTION
4000' APPROXIMATE LIMITS OF BEACH PLACEMENT AREA
LENGTH WILL BE DETERMINED
DURING CONSTRUCTION AND WILL
BE DEPENDANT ON QUANTITY OF
MATERIAL PLACED ON BEACH
100' WIDE
CONSTRUCTION
BERM
100' WIDE
CONSTRUCTION
BERM
TIE INTO EXISTING
5' NAVD 88 CONTOUR
TIE INTO EXISTING
5' NAVD 88 CONTOUR
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CN105
C H
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4,000'
NEW RIVER INLET ROAD
RIVER DRIVE
NORTH TOPSAIL BEACH
NEW RIVER INLET
ONSLOW BEACH
ATLANTIC OCEAN
SECTION 2 TANGENT ISECTIO
N 2
TANGENT J
CHANNEL TO JACKSONVILLE
CHANNEL TO JACKSONVILLE
TANGENT 1
TANGENT 2
SE
C
TI
O
N
T
AN
G
EN
T
APPROXIMATE LIMITS OF BEACH PLACEMENT AREA
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. PLACEMENT FOR TANGENT 1
AND TANGENT 2 STATION 0+00 - 30+00.
20001000
SCALE IN FEET
30002000
SCALE: 1" = 1000'
01000
1. DUE TO AGE OF PHOTOGRAPHY, PIPELINE ROUTE IS APPROXIMATE. THE CONTRACTOR SHALL NOTIFY THE TOWN OF NORTH TOPSAIL BEACH NO LESS THAN 15 DAYS PRIOR TO COMMENCEMENT OF PIPELINE PLACEMENT. POINT OF CONTACT WITH THE TOWN OF NORTH TOPSAIL BEACH IS STEVE FOSTER, TOWN MANAGER PHONE No.: 910-328-1349. PRIOR TO THE PLACEMENT OF PIPE, THE CONTRACTOR SHALL MEET ON SITE WITH THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE AND A REPRESENTATIVE OF THE NORTH CAROLINA WILDLIFE RESOURCES COMMISSION TO DETERMINE THE EXACT PIPELINE ROUTE. AS PIPELINE IS BEING LAID, CONTRACTOR SHALL CONSTRUCT RAMPS WHERE NECESSARY TO ALLOW PASSAGE OF VEHICLES OVER PIPELINE; THIS INCLUDES BUT IS NOT LIMITED TO, ALL DRIVEWAYS FOR
HOMEOWNERS.
2. VERTICAL DATUM NAVD88. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING HORIZONTAL AND VERTICAL
CONTROL PRIOR TO PLACEMENT OF DREDGED MATERIAL IN THE DESIGNATED PLACEMENT AREA.
3. HORIZONTAL DATUM NAD 1983.
4. PHOTOGRAPHY DATE: FEBRUARY 2019, COPYRIGHT 2019 DIGITAL GLOBE.
5. AREA TO BE DREDGED SHOWN THUS -
6. FOR DETAILS OF AREAS TO BE DREDGED, SEE SHEETS CN106, CN107, CN108, & CN109.
7. THE CONTRACTOR SHALL BEGIN PLACEMENT OF DREDGED MATERIAL ON THE BEACH IN THE VICINITY OF THE INTERSECTION OF RIVER DRIVE AND NEW RIVER INLET ROAD. DUE TO ONGOING CHANGES TO THE SHORELINE CAUSED BY OCEAN WAVES, THE EXACT BEGINNING POINT FOR PLACEMENT OF DREDGED MATERIAL WILL BE ESTABLISHED BY THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE IMMEDIATELY PRIOR TO THE START OF DREDGING AND PLACEMENT OPERATIONS. PLACEMENT OF THE 100-FOOT WIDE BERM SHALL CONTINUE DOWN THE BEACH AS FAR AS
THE QUANTITY OF DREDGED MATERIAL WILL ALLOW.
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 CONTRACTOR OPERATIONS SHALL BE REPAIRED TO THE SATISFACTION OF THE CONTRACTING OFFICER OR HIS/HER DESIGNATED REPRESENTATIVE AT NO COST TO THE GOVERNMENT OR TO 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 DISTRIBUTION AND MOVEMENT OF BEACH FILL MATERIAL. EXISTING SANDBAGS BELOW ELEVATION 5 FEET THAT LIE WITHIN THE BEACH FILL LIMITS SHALL BE COVERED WITH FILL EXCEPT EXISTING SANDBAGS AT TOPSAIL REEFS SHALL NOT BE COVERED. IN AREAS WHERE IT IS NOT POSSIBLE TO TIE INTO THE 5-FOOT CONTOUR, THE
CONTRACTOR SHALL CONSTRUCT THE BACKSLOPE TO THE NATURAL ANGLE OF REPOSE.
9. NORTH TOPSAIL BEACH AND THE INLET BEACH ARE CONSIDERED SUITABLE HABITAT FOR SHORE BIRDS AND SEA TURTLES.
ALL WORK ON THE BEACH INCLUDING PIPE REMOVAL SHALL BE COMPLETED BY 31 MARCH 2023. SEE PARAGRAPH ENVIRONMENTAL WINDOWS OF SECTION 01 57 19 OF THE SPECIFICATIONS FOR ENVIRONMENTAL WINDOWS AND
RESTRICTIONS.
NOTES
TANGENT 2 STATION 30+00 - 104+00
PLACEMENT AREA
PROPOSED APPROXIMATE
LOCATION OF PIPELINE ROUTE
C N
5_
To ps ai l_
Be ac h.
dw g
CHANNEL PRISM
LINE (TYP)
M.L.L.W.
3(TYP)
REQUIRED
NOT TO SCALE
DREDGING SECTION TANGENT 2
2' ALLOWABLE
OVERDEPTH
DEPTH
VARIES
STATION 30+00 - 45+00 & 55+00 - 86+00
CHANNEL PRISM
LINE (TYP)
M.L.L.W.
3(TYP)
REQUIRED
NOT TO SCALE
DREDGING SECTION
2' ALLOWABLE
OVERDEPTH
DEPTH
VARIES
TANGENT 2 STATION 0+00 - 30+00
50+0055+0060+0065+0070+0075+0080+0085+0090+0095+00100+00105+00
-9 8
-9 5
-9 1
-8 7
-8 4
-11 1
-9 4
-7 5
-11 7
-10 4
-9 7
-9 0 -6 1
-7 9
-7 6
-9 1
-9 4
-9 7
-10 0
-9 8
-4 4 -8 3
-8 9
-10 2 -9 1
-7 7
-9 1
-8 5
-10 1
-8 7
-10 5 -9 3
-9 6
-8 8
-9 2
-7 8 -9 0
-10 4
-8 0
-9 6 -11 7-9 5
-10 2 -8 7
-9 3
-10 0
-11 5
-5 6
-10 2
-8 5
-12 0
-6 6
-8 9 -6 9 -6 7
-10 5 -10 3
-7 4
-5 3
-8 7
-12 2
-11 1 -9 8
-14 0
-9 3
-10 5
-10 7
-10
-9 1-9 1
-10 6
-10 0
-10 5
-10 0
-9 9 -9 6
-10 4
-10 1
-7 3
-10 4 -11 0
-12 7
-7 7
-10 7
-11 2
-12 3
-10 6
-8 2
-11 1
-12 3
-8 6
-10 7
-11 2
-10 8 -12 1
-9 9
-9 3
-9 1
-9 4
-9 7
-6 6
-10 8
-10 7
-11 1
-12 1
-9 1
-12 4
-12 4
-9 2
-6 5
-9 9
-9 4
-10 2 -9 4
-10 5-11 2
-9 6
-8 6 -6 2
-9 8
-8 8
-8 9
-7 9
-7 9
-10 1
-9 3
-9 8
-10 3
-10 4
-11 8
-11 3
-9 5
-9 2
-9 5
-10 5
-11 0
-9 5
-11 9-9 0
-8 5-8 9
-15 8
-11 2
-10 6
-7 6
-10 7 -9 3
-11 6-11 2
-9 1-10 0
-8 1
-9 8
-7 8
-10 1-9 9 -9 9
-9 0-9 5 -9 7
-11 5
-10 6-10 4 -10 4
-9 7
-8 6
-9 2
-8 2-10 8
-9 4
-11 0
-9 4 -9 5
-10 9
-10 6 -11 2
-8 0
-9 3
-9 3
-10 2 -8 1
-9 8
-9 4
-7 8
-9 5
-9 2
-9 5
-7 6
-12 2
-9 1-9 5
-12 0
-10 2
-11 9
-9 6
-8 1-8 3
-13 4
-7 7
-10 2
-8 4
-9 8
-10 0
-8 6
-9 1
-10 5
-6 3
-8 1
-10 8
-9 9
-9 7
-10 1
-11 6
-10 3
-5 4
-9 4 -10 4
-9 3
-7 5
-11 5
-7 6
-7 7
-10 3
-10 6
-7 6
-10 2
-11 1
-8 4
-10 1
-11 0
-8 0 -10 8
-16 8
-8 5
-10 2
-6 4
-10 5
-10 8
-10 0 -10 7
-9 8
-12 4
-9 8
-12 6 -12 4
-7 6
-12 6
-11 3 -10 5
-9 7
-5 4
-14 7
-8 8
-9 3
-10 6 -9 6
-6 0
-11 0
-7 9
-9 4 -9 1
-8 9
-19 1
-11 2
-7 9
-10 2
-6 6
-10 5
-4 9
-10 5 -10 6
-8 5
-10 1
-9 7 -10 7
-9 2
-12 5
-16 0
-11 6
-8 9 -9 4
-10 4
-11 2 -10 7
-8 5
-9 5 -11 2
-9 4 -10 2
-7 3
-12 5
-11 2
-10 3
-10 6
-10 2
-6 8
-10 4
-8 8
-11 5 -9 4 -6 1
-8 9
-9 5 -11 4
-9 8
-10 6
-10 2
-6 2
-10 1
-10 1
-9 6 -10 4
-9 4
-8 1 -9 3
-9 1
-10 2
-18 8
-6 3
-9 7
-10 6
-10
-9 8
-9 0
-11 9
-10 8 -8 7
-9 4
-10 0 -16 9
-9 1
-8 5 -5 0
-10 9 -9 9
-11 3
-8 4
-10 2 -17 1 -7 1-7 6
-9 1
-8 6
-12 6 -12 4
-12 9
-14 8
-9 7 -10 4
-7 7-9 6
-9 5
-10 8
-10 3
-9 0-9 5 -9 6
-12 0
-10 0 -11 8
-12 7
-9 2-9 1-15 7
-9 9
-10 2
-8 5
-10 5
-9 2
-10 7
-9 6 -5 8
-6 3
-10 7
-6 1 -8 3
-8 6
-7 4 -10 4 -9 5
-11 1
-10 5
-10 2 -9 5
-15 1
-10 3
-11 0
-10 5
-7 0
-9 5
-4 3
-11 0 -10 5
-9 5
-7 8
-10 2
-10 3
-7 4
-10 5
-8 2
-9 9
-10 5 -5 9-7 6
-10 2
-9 8
-5 6 -5 8
-9 9
-11 8
-4 8
-9 6
-9 0
-8 3
-12 5 -20 3
-14 3
-10 4 -9 3
-20 0 -8 0 -13 4
-9 4
-6 1
-11 2-12 4 -9 5
-7 6
-7 4
-9 1
-13 0 -10 6 -9 3
-7 3
-8 0
-10 7
-11 7
-8 2
-9 2
-11 4
-7 9
-10 6 -11 4
-11 1
-7 5
-11 1 -5 6
-9 9
-8 8 -5 4
-10 3
-7 8
-11 0
-4 8
-8 9
-12 9
-9 3
-6 9-10 0
-10 8
-6 7
-7 2
-10 1 -10 0
-11 9
-10 7
-10 2
-10 0
-11 3
-20 6
-9 1
-9 3
-7 2
-10 1
-8 1
-9 6
-9 5
-10 3
-8 0-9 4 -11 2
-10 7
-11 8
-18 8
-10 5
-9 8-10 7 -4 5
-6 9
-9 4
-11 5
-7 6
-20 2 -10 4
-9 3-9 3
-9 5
-7 9
-10 7
-11 0
-10 8
-8 3
-10 9 -9 8
-8 6 -10 0
-9 2
-10 4
-10 9 -11 2
-8 5
-14 0
-10 8
-8 4
-7 5 -11 1
-9 8
-8 5
-9 8
-13 5
-10 3 -10 7
-9 5-10 8
-6 5
-12 8
-10 5
-9 8
-10 9
-10 1
-9 5
-11 0
-10 4
-9 4
-11 4
-12 3 -11 4
-9 6 -8 8
-7 3
-9 1
-8 0
-9 7
-7 6
-9 4
-6 3
-8 1 -9 6
-8 6
-10 4
-10 0 -10 4
-12 5-9 3
-10 3 -5 7
-10 1
-6 4
-11 7 -10 6
-9 4 -9 6
-9 1
NRAIWW-07-V-21NRAIWW-07-V-22
NRAIWW-07-V-23
NRAIWW-07-V-24CHANNEL TO JACKSONVILLE
TANGENT 2
CHANNEL PRISM LINE
CHANNEL PRISM LINE
CHANNEL CENTERLINE
"21"
N: 305085.94 E: 2484781.95
N: 305006.22 E: 2484740.18
N: 303646.47 E: 2487527.48
N: 303566.69 E: 2487485.68
"17"
"17A" 55+00
56+91
0+00 5+0010+0015+0020+0025+0030+0035+0040+0045+0050+00
NRAIWW-07-V-19
NRAIWW-07-V-18
NRAIWW-07-V-13
CHANNEL TO JACKSONVILLE
TANGENT 2
-12
-6 9
-6 9
-6 1
-7 0
-8 9
-6 3
-11 0
-5 5
-7 7
-2 9
-7 9
-5 2
-10 1
-7 4
-10 3-10 4
-3 5
-11 0
-9 1 -7 6
-9 3
-8 3
-9 1
-7 8 -6 9 -7 1
-5 6
-8 7
-6 4
-8 3
-8 4
-10 3
-6 8
-8 5
-8 5
-8 5
-8 4
-9 9
-9 7
-9 1-7 9
-5 7
-9 6 -10 5
-9 5
-11 5 -12 3
-5 5
-2 4 -7 6
-8 8
-8 8
-5 8
-9 0
-9 9
-4 1
-9 0
-11 7
-5 3
-9 3
-7 1 -9 3
-10 2
-5 8
-3 2
-11 8
-7 6
-10 0
-6 3
-11 5
-9 9
-7 8
-8 1
-7 0
-3 0
-7 8
-12 2 -6 2
-7 6
-7 4
-10 7
-8 8
-6 9
-3 8
-7 5
-9 5
-8 0
-9 0
-4 4
-8 1
-9 3
-7 0
-8 6-8 1
-10 7
-8 0
-7 9
-9 4 -9 3
-7 0 -6 8
-7 6
-1 5
-8 0
-10 6
-5 5
-8 4
-12 3
-8 6
-9 1
-10 7
-10 6
-8 8
-7 4
-7 5
-8 0
-9 5
-9 4
-11 2
-8 0
-9 4
-10 7
-5 3
-9 8
-3 2
-6 3
-9 1
-5 7
-8 6
-10 8 -10 1
-5 7
-7 3
-12 1
-6 1
-12 4
-6 1
-11 1
-6 1
-7 1-7 2
-9 6
-8 2 -2 0
-5 3
-9 7
-7 7
-5 5
-9 3
-7 6
-3 6
-10 4
-11 8
-9 4
-7 1
-9 0
-8 5
-6 8
-10 5
-3 9
-10 4
-6 5
-11 2
-7 6
-6 3
-10 8
-8 5
-8 4
-8 3
-7 4
-11 2
-10 0 -8 2 -8 9
-8 1
-2 7
-9 0 -11 6
-8 0
-9 4
-7 1
-6 4
-10 1
-7 6
-8 4
-8 5
-11 2
-7 8
-11 0 -7 9
-7 3
-6 5
-7 5
-7 6
-8 0
-7 5 -7 3
-10 9 -7 2
-6 7 -6 3
-3 3
-11 8
-7 6
-8 4
-4 9
-11 8
-11 8
-7 8
-10 2
-6 0
-6 3
-6 9
-3 2
-6 1
-9 5
-8 9
-8 6
-5 4
-10 3
-7 8 -12 2
-11 1
-7 6
-11 6
-12 0 -2 3 -11 9
-9 8
-8 6 -6 9
-8 8
-1 8-4 9
-3 8
-7 9 -9 5-9 0
-8 0 -11 0
-8 6
-9 4
-11 3
-6 0
-9 2
-7 6
-8 2
-10 8
-7 8
-9 9 -8 3
-6 2
-9 9
-9 6
-5 0
-9 0
-4 8
-9 0
-5 8
-11 9 -12 2
-7 9-9 2
-10 2
-12 9
-10 3
-7 1
-11 1
-8 4
-8 1 -5 9
-8 1
-10 6
-8 8
-7 2
-9 2
-10 8
-3 5
-10 7
-6 2
-4 7
-9 1
-8 1
-8 7
-10 2
-8 5
-9 7
-7 3
-9 2
-6 8 -7 3
-5 8
-10 0
-8 0
-8 0
-8 8
-8 0 -3 9
-8 7
-11 2
-9 4
-6 3
-7 9 -7 8 -13 0
-6 4
-12 0
-10 6 -10 0
-2 7
-5 3
-9 6
-10 5
-5 4
-8 2
-9 1
-2 2-5 4 -6 9
-8 6
-9 4
-3 2
-8 5-7 2
-6 5
-9 4
-8 6
-4 9
-2 0
-7 9
-5 9
-1 7-10 0
-11 3 -11 2
-6 3
-10 2
-11 8-1 8
-10 4
-11 2 -12 7
-7 7
-8 6
-5 9
-6 7
-7 2 -8 8
-8 1 -9 4
-4 5
-6 1
-7 2
-8 9
-11 4
-10 4
-7 8
-8 7
-11 2
-12 0-8 0 -11 8
-10 1
-5 8
-9 7
-5 2 -7 0
-10 1 -11 0
-10 4 -8 2
-10 8
-3 9 -5 9
-7 6
-3 2
-7 7
-9 3
-12 2
-7 5
-9 7
-5 4
-10 6
-6 2
-10 5
-9 0
-7 5
-7 9 -8 8
-8 4
-7 4
-8 5
-9 4
-8 7
-10 9
-6 9
-11 1
-10 7
-8 0
-13 6 -6 0
-4 1
-6 4
-10 8
-6 7
-9 1
-10 6
-6 9
-6 6
-7 9
-6 7
-9 4
-7 4
-8 3
-10 3
-11 5
-5 7
-7 9
-9 0 -13 3
-4 7
-7 3
-7 3 -7 4-6 4
-7 8 -11 7-8 2
-11 8
-6 4
-8 9
-6 0
-9 9
-6 1
-7 9
-6 4
-8 7
-3 2-6 7
-9 9
-6 5
-7 5
-11 0
-10 5
-3 9
-10 0
-7 6
-12 2
-7 0
-9 6
-8 0
-6 1
-8 4 -9 2
-11 6
-8 3
-11 1-8 1
-11 2
-1 6
-11 1
-9 6
-5 7
-11 6 -6 7
-9 5
-8 1
-9 9
-9 0
-6 6
-10 0
-9 4
-9 8
-11 5
-8 8
-6 7
-9 5
-9 5
-9
-8 3 -9 3
-9 4
-4 1
-10 2
-10 9
-7 5
-4 3
-9 8
-7 1
-8 4
-6 5
-8 0 -7 6
-9 9
-8 9
-9 2
-8 8
-10 6
-8 0
-8 6
-12 0
-5 4
-10 4
-6 9
-6 6
-4 8
-12 3
-7 0
-3 5
-11 2
-8 0
-8 7
-4 3
-8 3
-8 3
-9 4
-6 0
-12 3
-10 2
-6 0
-9 5
-10 7
-11 9
-6 9
-7 2
-6 9
-10 9-9 2
-7 3
-8 7
-11 4
-5 6
-10 7
-8 8
-8 2
-6 3
-9 3
-7 8
-9 5-9 7
-10 1
-9 0
-11 7
-8 8 -11 5
-7 8-7 5 -7 7
-7 8 -7 5
-12 2
-4 0
-8 0
-9 6
-8 0
-5 5
-11 1
-9 3
-11 9
-7 3
-10 0
-9 8-11 3
-10 4 -7 2
-6 2
-10 3
-6 2
-9 3 -6 8
-10 9
-8 8
-8 1
-9 0
-11 8
-7 4
-11 9
-9 5
-10 5
-9 8
-7 7 -8 8
-8 0
-7 9
-5 4
-9 4 -11 3
-7 9
-11 2 -8 0
-8 7
-2 2
-7 9
-8 6
-7 8
-7 8
-3 5
-7 4
-4 5
-4 0
-8 4
-8 3
-10 8
-7 3
-9 9
-10 7
-11 9
-9 3 -11 3
-8 6
-6 7
-10 1
-11 9
-10 4
-8 4
-9 7
-4 2
-5 0
-7 3 -8 5 -6 8
-6 9
-7 8
-6 2
-12 4
-7 3
-6 5
-6 9
-11 9
-7 5 -11 9
-11 5
-7 2 -8 6 -10 7
-10 3-8 6 -9 3
-6 7
-4 9
-8 6
-6 9
-10 1
-9 5
-8 1
-11 0
-10 8
-7 3
-8 1
-9 5
-8 0
-9 9
-3 5
-9 4
-11 4
-4 9
-10 7
-5 6
-12 1
-4 8
-7 3
-9 9
-9 0 -8 5
-5 4
-9 6
-10 5 -11 3
-10 7
-7 4
-13 1
-7 2
-9 2
-11 2
-9 2 -5 9
-10 1
-7 0
-10 1
-8 5
-9 3
-10 3
-4 6
-6 9 -7 7
N: 301108.90 E: 2492367.44
N: 301036.28 E: 2492311.73
NRAIWW-07-V-17
NRAIWW-07-V-16 NRAIWW-07-V-15
NRAIWW-07-V-13
NRAIWW-07-V-14
NRAIWW-07-V-20 CHANNEL PRISM LINE
CHANNEL PRISM LINE
CHANNEL CENTERLINE
"18"
N: 303646.47 E: 2487527.48
N: 303566.69 E: 2487485.68
N: 303182.12 E: 2488413.14
N: 303102.33 E: 2488371.32
N: 302485.61 E: 2489741.62
N: 302405.78 E: 2489699.79
C H
AN
N
EL
D
EP
TH
TR
AN
SI
TI
O N
C H
AN
N
EL
D
EP
TH
TR
AN
SI
TI
O N
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 17 MAY 2022 WITH DISTRICT SURVEY VESSEL "ROGERS" USING RTK
GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: DM 16
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
DM 18 2,488,665 303,083
LT DM 17 2,492,177 301,091
BUOY 17A 2,491,556 301,462
DM 21 2,485,604 304,425
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IN TANGENT 1
AND TANGENT 2 STATIONS 0+00 - 17+00 IS NORTH TOPSAIL BEACH. FOR LOCATION OF
PLACEMENT AREA SEE SHEET CN105.
8. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IN TANGENT 2
STATION 17+00 - 104+00 IS THE DISPOSAL AREA SHOWN ON SHEET CN105.
9. 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. Feet
0 400 800
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES
LEGEND
CN106
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SHEET ID
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2 3 4 5 6 7 8 9 10
US Army Corps of Engineers
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BORING LOCATION
CHANNEL DEPTH
TRANSITION
C N
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C ha nn el st oJ ac ks on vi lle .d
CHANNEL PRISM
LINE (TYP)
M.L.L.W.
3(TYP)
REQUIRED
NOT TO SCALE
DREDGING SECTION
2' ALLOWABLE
OVERDEPTH
DEPTH
VARIES
TANGENT 2 STATION 0+00 - 30+00
5+
0+
"12A"
109+97.6
CHANNEL TO JACKSONVILLE
TANGENT 1
"15"
"16" 5+0010+0015+00 0+0020+0050+0055+0056+91 45+00 25+0030+0035+00
NRAIWW-07-V-13 NRAIWW-07-V-12
NRJAX-V-09-12
NRAIWW-07-V-11
NRJAX-V-09-11
40+00
-12
-1
-12 -12 -12
-12-12-12 -12-12 -1
-12
-13
-11
-5
-6
-9
-7 2 -7
3-5
-15
-8 5 -14
-8
-9
-8
-11
-8
-9
-5
-12
-8
-8
-11
-10
-6
-12
-13
-11
-10
-5
-5
-7
-6
-13
-5
-7
-5
-11
-6
-5
-9
-8
-7
-8
-6
-6
-9
-6
-14
-14
-13
-10
-14
-12
-17
-17
-6
-12
-7
-15
-5
-9
-16
-9
-13
-7 5-8
-6
-10
-8
-13
-5
-11
-6
-10
-12 7 -13
-10
-7
-16
-13
-14
-9 5 -6
-11
-10
-14
-10
-12
-10
-9
-8
-6
-5
-11
-10
-14
-9
-7
-9
-9
-13
-16
-14
-16
-5
-12
-7
-9
-12
-9
-6
-9
-8
-10
-13
-6
-16
-7
-9
-16
-6
-10
-11
-6
-7
-5
-11
-4
-8
-16 2 -16
6-7
-8
-9
-11
-13
-10
-11
-12
-8
-8
-11
-7
-10 6-10
-9
-10
-6
-6
-4
-11
-11
-15
-8
-10
-11
-9
-6 0-6
-12
-9
-14
-13
-10
-12
-11
-7
-11
-12
-4
-9
-12
-18
-4
-9
-6
-6
-9
-9
-5
-16
-9 7-6
-14
-13 3-18
-14
-5
-9
-9
-6
-12
-13
-12
-5
-6
-10 1-18
-7
-10
-12
-6
-9
-18
-9
-7
-8
-6
-12
-6
-7
-14
-9
-8
-10
-12
-9
-8
-6
-15
-17
-8
-9
-6
-12
-5
-14
-9
-9
-14
-7
-5
-15
-10
-4
-7
-10
-13
-14
-13
-5
-9 2-10
-11
-12
-19
-6
-13
-6
-6
-6
-8
-14
-7
-8
-13
-8
-6
-12
-4
-11
-7
-12
-6
-6
-5
-9
-6
-9
-4
-7
-4
-18
-10
-5
-10
-5
-11
-15
-12
-11
-19
-7
-8
-11
-11 3-5
-18
-7
-13
-12
-4
-11
-9
-18
-7 7-7
-14
-6
-12
-12
-9
-16
-12
-10
-11
-13
-15
-9
-4
-7
-14
-8
-7
-10
-12
-13
-6
-13
-9
-14
-5
-6
-13
-9
-15
-14
-14
-10
-11 0-13
-14
-10
-13
-10
-15
-7
-18
-10
-13
-11 2-5
-11
-14
-3
-11
-13
-8
-11
-8
-11
-14
-12
-14
-10
-17
-5
-7
-11
-8
-12
-9
-13
-8
-7
-7
-13
-11
-16
-12
-11
-11
-8
-8
-11
-9
-5
-6
-5
-6
-10
-10
-8
-9
-5
-8
-11
-14
-13
-9
-6
-9
-6
-10
-9
-7 0 -7
-15
-9
-10
-5
-8
-6
-9
-7
-10
-12
-7
-13
-12
-6
-6
-4
-7
-8
-12
-8
-11
-4
-9
-9
-8
-7
-6
-5
-4
-12
-9
-11
-11
-16
-14
-6
-11 4 -9
-8
-4
-10
-12 3 -16
-16
-10
-10
-18
-14
-17
-6
-14
-11
-8
-16
-4 6 -11
-5
-13
-18
-16
-13
-13
-7
-10
-19
-11
-12
-10
-11
-13
-7
-14
-12
-5
-5
-14
-5
-13
-11
-18
-12
-7
-8
-14
-11
-6
-7
-10
-14
-6
-12
-6
-11
-8
-7
-12
-12
-10
-7
-7
-11
-11
-6
-11
-13
-12
-18
-9
-6
-10
-14
-10
-12
-9
-7
-9
-8
-8
-8
-6
-8
-6 6-13
-3
-13
-9
-11
-10
-6
-9
-7
-3
-9
-6
-9
-15
-7
-10
-15
-11
-8
-17
-12
-13
-11
-8
-6
-7
-19
-8
-11
-7
-9
-11 8 -13
-15
-9
-15
-8
-19
-9
-5
-9
-7
-11
-18
-6
-9
-13
-6
-8
-7
-10
-19
-19
-10
-13
-4
-11
-12
-5
-9
-13
-5
-8
-19
-12
-12
-14
-12 8 -6
-15
-11
-12
-5
-13
-9
-7
-12
-7
-5
-11
-17
-10
-7
-13
-7
-12
-8
-9
-16
-10
-9
-17
-9
-7
-14
-13
-5
-8
-16
-6 3 -10
-9
-13
N: 298969.67 E: 2494328.06
N: 298908.86 E: 2494261.73
N: 298453.64 E: 2494801.01
N: 298392.86 E: 2494734.69
NRAIWW-07-V-10 NRAIWW-07-V-9
NRJAX-V-09-10
NRJAX-V-09-8
NRAIWW-07-V-8
NRAIWW-07-V-7
NRAIWW-07-V-6
NRJAX-V-09-5
N: 297027.01 E: 2495986.63
NRAIWW-07-V-5
NRAIWW-V-09-5
N: 296940.54 E: 2496193.74
N: 296737.59 E: 2495957.92
CHANNEL PRISM LINE
M
ATC
H
LIN
E - SEE SH
EET C
N
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 17 MAY 2022 WITH DISTRICT SURVEY VESSEL "ROGERS" USING RTK
GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: DM 16
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 15 2,494,696 298,424
BUOY 12A 2,496,145 296,992
DM 16 2,493,995 299,358
LT DM 17 2,492,188 301,099
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL FOR
TANGENT 1 AND TANGENT 2 STATION 0+00 - 30+00 IS NORTH TOPSAIL BEACH. FOR
LOCATION OF PLACEMENT AREA SEE SHEET CN105.
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.
Feet 0 400 800
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES
LEGEND
C O
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N O
D
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IG
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B
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D
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C R
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SHEET ID
B
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2 3 4 5 6 7 8 9 10
US Army Corps of Engineers
AT
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2P M
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XX
XX
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M
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XX
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CN107
C H
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N
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VI
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BORING LOCATION
C N
7_
C ha nn el st oJ ac ks on vi lle .d
20+00
25+00
296000
2496000
5+00
"74"
15+00 10+00
0+00"76"
NRAIWW-V-09-1
NRAIWW-V-09-2
NRAIWW-V-09-3
NRAIWW-V-09-4
NRAIWW-07-V-1
NRAIWW-07-V-2
NRAIWW-07-V-5
NRAIWW-07-V-6
NRJAX-V-09-5
NRJAX-V-09-6
NRAIWW07-V-7
SECTION 2 TANGENT J
CENTERLINE OFFSET
N: 295946.01 E: 2495038.04
N: 295878.13 E: 2495096.44 N: 296169.79
E: 2495435.30
N: 296421.09 E: 2496080.38
N: 296663.43 E: 2495871.88
N: 296737.53 E: 2495958.01
N: 297027.01 E: 2495986.63
N: 296499.78 E: 2496282.37
CHANNEL CENTERLINE
CHANNEL PRISM LINE
90'
CHANNEL PRISM LINE
"2"
CHANNELS TO JACKSONVILLE
TANGENT 1
-12 9
-10 8
-10
-6 9
-11 9
-10
-13
-8 5
-16
-9 3
-7
-10 1
-11 6
-8
-11 3
-7 0
-13 6
-12 9
-14
-6
-15
-7 1
-12 0
-16 5
-7 1
-10
-13
-13 1
-9 3
-18
-13
-19 9
-7
-8
-7
-15
-8
-7
-11 4
-12 9
-11 7
-16 0
-11 7 -7 9
-13 2
-12 5 -13
-12 5
-12 5
-10
-11 0
-11 4
-13 1
-9 3
-16
-13 6
-11 9
-9 9
-11 7
-12 9
-14 9
-16
-12 9
-11 9
-10 5
-16 3 -14 2
-13
-11 7
-8
-8 9
-17
-9 1
-15 3
-9 8
-11 6
-18
-15
-11 2
-12 1
-14 1
-13 2
-14 8
-12 3
-10 8
-9
-8 6
-15 3
-13
-11 1
-13
-15 0
-9 0
-7 9
-14
-6
-10
-13
-6
-8
-9 3
-13
-11 4
-7 6
-10
-12 8
-12 8
-13 3
-16 0
-10 0 -8
-15
-7
-10 1
-16
-13 0
-7 3 -11 8
-14 9
-7
-11 2
-9
-5
-10 0-13 3
-13
-14 6
-11 9
-11 4
-13
-13
-10
-9
-14 1
-10 1
-13 3
-10 9
-7 8
-7 0
-10 1
-11 0
-13 9
-7 6
-11 4
-15
-7 5
-9 9
-13 1
-7 5
-11 8
-7
-16 9
-10
-12 5
-14 8
-6
-10
-13 9
-14 9
-9 8
-14 7
-15
-12
-16
-16 3
-13
-13
-11 5
-12 4
-8
-9
-13 6
-12
-11 3
-13 8
-10
-17
-10 5
-13
-7
-9
-18 7
-13 9
-13 7
-9
-14 2
-15 1
-14 0
-16 6
-9 6
-15
-7
-13
-10 8
-10
-15 0
-13
-13
-7
-4
-9
-9
-13 1
-13 1
-10
-9 5
-14 7
-12 5
-12 9
-13 5
-14 7
-13 6
-11 8
-13
-12 0 -10 3
-5
-10 1 -4
-9 9
-16 5
-8
-13 3
-8
-7 9 -6 8
-13
-6 3 -12 9
-6 0 -4 7
-7
-8
-15
-11 4
-7 5
-8
-8
-9 1
-14 8
-9 5
-14 7
-7 8
-13 7
-9
-14 5
-11 2
-7
-8 6 -12 0
-13 0
-7 1 -6 9
-13 8
-12 6
-6
-10
-9 1
-14 6
-7
-7 3
-10 7
-9
-10
-8 3
-15 6 -13 1
-18
-6
-14 1
-18 2
-9
-7 5
-8
-16
-11 4
-18
-15 5
-12 3-8 8
-9
-16
-13
-18 1 -12 7
-11 0
-14
-10
-12 3
-13 8
-13
-13
-11 5
-9
-14 8
-15 6
-18
-7
-8 8
-15
-7 8
-7 5
-7
-11 3
-8
-12 3
-7 8
-13 9 -15 3
-10 1
-7
-18
-14 6
-9
-11 1
-6
-10 1
-8
-12 0
-16
-17 7
-12 8
-8
-8 5
-11 2
-8
-18
-16 1
-12 3
-4 8
-7
-9 3
-12 7
-8 1
-12 9
-15
-8
-13
-9 5 -12 8
-12 6
-8
-18
-12 6
-10 3
-10
-10 9
-8
-7 0
-12
-10
-10 7
-14
-11 0
-8 5
-15
-12 8
-14
-10 8
-11 8
-15 6
-7
-17 0
-11 8
-9
-16 5
-11 2
-10 4-5
-13
-11 3
-9
-13
-11 4 -12 1
-6 7
-15
-16 5
-3 5
-6
-14
-11 4
-12 1
-15
-13
-15 3
-12 5
-10 7
-12 8
-13 9
-12 8
-7 7
-9
-10
-10
-12
-13
-10
-13 6
-12-12
-12
-12
-1
-12
N: 296814.32 E: 2496219.12
CHANNEL PRISM
LINE (TYP)
M.L.L.W.
3(TYP)
REQUIRED
' 2' ALLOWABLE
OVERDEPTH
DEPTH
VARIES
TYPICAL DREDGING DETAIL
N.T.S.
Feet 0 200 400
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 APRIL 2022 WITH DISTRICT SURVEY VESSEL "ROGERS"
USING RTK GPS HORIZONTAL POSITIONING EQUIPMENT AND 200 KHZ
SOUNDING EQUIPMENT.
4. TIDE GAGE LOCATED AT: DM 16
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 2 2,493,910 295,071
BUOY 74 2,495,637 296,529
BUOY 76 2,494,892 295,940
7. THE GOVERNMENT FURNISHED PLACEMENT AREA FOR DREDGED MATERIAL IS NORTH
TOPSAIL BEACH. FOR LOCATION OF PLACEMENT AREA SEE SHEET CN105.
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.
SOUNDING
NAVIGATION AIDS
ABANDONED NAVIGATION AID
SINKER AND CHAIN
-12 CONTOUR
AREA TO BE DREDGED
-12.0
NOTES LEGEND
C O
N
TR
AC
T
N O
D
ES
IG
N
ED
B
Y:
D
ES
C R
IP
TI
O N
A
M
AR
K
SI
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SU
BM
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D B
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D
AT
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SO
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N N
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C H
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D B
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D R
AW
N
B Y:
AW
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D D
AT
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SHEET ID
B
C
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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IN
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W
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C O
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C O
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TR
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N G
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N U
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XX
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M
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CN108
SE
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BORING LOCATION
C N
8_
Se ct
2T an
J.
dw
0+
100+00
"12A"
109+97.6 105+00
SECTION 2 TANGENT I
85+0090+00
CENTERLINE OFFSET
"72"
95+00
"71"
"72A"
90' 0+00
NRAIWW-V-09-05
N: 296942.96 E: 2496185.57
N: 296499.78
NRAIWW-07-V-4
NRAIWW-V-09-6
NRAIWW-07-V-3
CHANNEL CENTERLINE
CHANNEL PRISM LINE
CHANNEL PRISM LINE
N: 296342.16 E: 2498146.77 N: 296252.01
E: 2498133.26
-12 9
-10 2
-14 1
-12 0
-5 7
-13
-9 3 -4 2
-9 3
-11 6
-11 2
-9 1
-10 7
-11 3
-12 0
-13 4
-13 8
-10 6
-8 0
-7 2
-11 5
-12 0
-9 7
-11 8
-6 1
-3 0
-13 3
-12 7
-15 5
-12 6
-11 0
-12 0
-11 3
-11 7
-10 1
-14 6
-7 8
-13 1
-11 6-13 8
-13 3
-10 0
-15 2
-14 7
-10 2
-13 1
-10 6
-5 9
-10 4
-13 1 -11 4
-12 0
-16 0
-3 7
-5 7
-13 2
-12 0
-13 7
-7 5
-6 2
-8 6
-6 0
-12 9
-11 0
-13 6
-5 0 -5 5
-11 8
-12 9
-4 2
-12 4
-7 6
-13 5
-9 1
-7 2
-10 2
-5 4-5 9
-11 8
-6 6
-10 4
-12 4
-15 7
-14 5
-2 8
-8 8
-5 8 -5 1
-12 0-12 0
-8 1
-8 0
-14 1
-5 8
-5 0
-15 8
-11 1
-13 3
-11 1
-3 0
-10 7
-13 0
-15 0
-8 2
-3 6
-8 9
-5 2
-12 1
-5 4
-14 3
-11 9
-12 8
-16 0
-11 5
-3 0
-…
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