W921BU25BA009-DwgsAM0001.pdf
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- W912BU25BA009
About this file
This document is a technical drawing (Sheet C-104) from the U.S. Army Corps of Engineers Philadelphia District depicting the Indian River Inlet Ebb Shoal Borrow Area Plan for a beach nourishment project in Sussex County, Delaware. The plan shows two primary borrow areas (Area A and Area B) with specific coordinates, bathymetric contours, and vibracore sampling locations for sand extraction. Key technical notes specify that dredging must begin in Area A and continue until all material is removed to the specified depth before moving to Area B, with an allowable one-foot overdepth. The soundings represented are from Class 1 surveys conducted in July 2024, using NAVD 88 vertical reference and NAD 83 Delaware State Plane horizontal reference. The drawing includes precise coordinate data for multiple point locations and provides a scale and north arrow for geographic orientation.
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Text version
PERMITTED BORROW AREA
AREA A
AREA B
KHV-103
KHV-105
KHV-104
KHV-230
KHV-231
AREA NOT AVAILABLE
FOR CONTRACT
AREA NOT AVAILABLE
FOR CONTRACT
COORDINATES
POINT NUMBER
NORTHING
222524.4
222836.5
221275.4
220963.6
222704.5
221179.7
221166.1
222682.9
221119.5
221816.3
222271.1
EASTING
759312.7
764643.8
764794.8
759462.9
762388.3
763158.5
762925.8
762019.8
762128.9
761745.7
761061.3
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NOTES:
1. THE SOUNDINGS DEPICTED ON THIS MAP REPRESENT THE RESULTS OF
CLASS 1 SURVEYS CONDUCTED IN JULY 2024 AND CAN ONLY BE
CONSIDERED AS INDICATIVE OF THE BATHYMETRY AS IT EXISTED AT
THAT TIME.
2. VERTICAL REFERENCE - NAVD 88.
NOOA TIDAL EPOCH- 1983 - 2001
3. HORIZONTAL REFERENCE - NAD 83 DELAWARE STATE PLANE, ZONE 0700,
U.S. FOOT.
4. THE POSITIONS OF THE AIDS TO NAVIGATION ARE PROVIDED FOR
INFORMATION ONLY, AND SHOULD NOT BE USED FOR NAVIGATION.
5. VIBRACORE LOGS AND SIEVE CURVES FOR THE VIBRACORES SHOWN ON
THIS PLAN CAN BE FOUND IN THE SPECIFICATIONS.
6. DREDGING SHALL BEGIN IN THE INDIAN RIVER INLET EBB SHOAL
BORROW AREA A. THE CONTRACTOR SHALL DREDGE ALL MATERIAL TO
THE MAXIMUM DEPTH WITH AN ALLOWABLE ONE FOOT OVERDEPTH.
DREDGING IN THE INDIAN RIVER INLET EBB SHOAL BORROW AREA A
SHALL BE CONTINUOUS UNTIL ALL MATERIAL HAS BEEN REMOVED TO
THE SPECIFIED DEPTH OF THAT BORROW AREA PRIOR TO MOVING TO
BORROW AREA B.
NORTH
PLAN
0200' 200'100' SCALE: 1" = 200'-0"A1 PLAN - IRI EBB SHOAL - BORROW AREAA1 PLAN - IRI EBB SHOAL - BORROW AREA a
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| C-104 IRI EBB SHOAL - BORROW AREA PLAN |
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