Attachment B - 1783178 PNY RESERVE BASIN FY26 MAINTENANCE DREDGING PLANS.pdf
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- Solicitation number
- N4008526B0002
About this file
This document is a site plan and technical specification sheet for FY 2026 maintenance dredging of the Reserve Basin at Philadelphia Navy Yard, designed by Naval Facilities Engineering Command (NAVFAC) Mid Atlantic. The project encompasses dredging operations in multiple areas within the Reserve Basin and an access channel to maintain adequate water depth for naval vessel operations. Four dredge areas are identified: RB-A (Reserve Basin Dredge Area 1A), RB-A7/8 (Reserve Basin Access Channel - 28th Street to Schuylkill River), RB-C (Reserve Basin Access Channel - 28th Street Optimum), and RB-D (Reserve Basin Dredge Area). The estimated total dredging volume across all areas is 96,111 cubic yards, with individual areas ranging from 12,449 to 21,364 cubic yards. Disposal is planned for the United Basin on Blues Island.
The technical specifications detail bathymetry data referenced to NOAA Mean Lower Low Water Datum (MLLW), transverse sections showing existing conditions and proposed dredging depths, and critical infrastructure considerations including a 15 kilovolt submarine cable and turbidity curtain requirements. Design notes specify contractor responsibilities for hydrographic surveys, utility location coordination, environmental protection measures including daily inspection for protected species, and coordination with existing 26th Street Bridge lift operations. Drawings indicate survey methodologies using RTK GPS systems and include cross-sectional profiles demonstrating current seabed conditions and target dredging depths. The project was approved by James S. Georgo, P.E. on November 4, 2025.
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Text version
PIER 4
4E
4WA
4WB
AREA "B"
AREA "A"
R B-C
R B-D
R B-A
R B-A7/8
FY
M
A
IN
TE
N
A N
C E
D R
E D
G
IN
G
R E
S E
R V
E B
A S
IN
P H
IL
A
D E
LP
H
IA
N
A V
Y Y
A R
D
N A
V A
L
FA
C
IL
IT
IE
S E
N G
IN
E
E R
IN
G
C O
M M
A N
D
M
ID
A
TL
A N
TI
C
LOCATION MAP
N
KEY PLAN: INSET 'A'
FY 2026 MAINTENANCE DREDGING of RESERVE BASIN
PHILADELPHIA NAVY YARD - PHILADELPHIA, PA
PIER 4
DE
LA
W
AR
E R
IV
ER
LIST OF SHEETS
V-001
HYDROGRAPHIC NOTES
DREDGE AREA
LABELS
VERTICAL DATUM - SOUNDINGS ARE IN FEET AND TENTHS AND ARE REFERRED TO THE NOAA MEAN LOWER LOW WATER DATUM (MLLW).
PIER 5
PIER 6
PIER 2
RESERVE BASIN
LI
M
IT
S
OF
F
ED
ER
AL
N
AV
IG
AT
IO
N
CH
AN
NE
L
SCHUYKILL
RIVER
PIER 7
PIER 1
SITE PLAN FOR:NORTH FT. MIFFLIN
PHILADELPHIA
NAVY YARD
PROJECT SITE
FORT MIFFLIN
LI
M
IT
S
OF
F
ED
ER
AL
N
AV
IG
AT
IO
N
CH
AN
NE
L
This project was designed by NAVFAC MIDLANT HYDROGRAPHIC BRANCH (PDC 45C) of the Naval Facilities Engineering Systems Command. The initials or signatures and registration designations of individuals appear on these project documents within the scope of their employment as required by NAVFACINST 3540.1E.
FY
M
A
IN
TE
N
A N
C E
D R
E D
G
S E
R V
E B
A S
IN
P H
IL
A
D E
LP
H
IA
N
A V
Y Y
A R
D
N A
V A
L
FA
C
IL
IT
IE
S E
N G
IN
E
E R
IN
G
C O
M M
A N
D
M
ID
A
TL
A N
TRANSVERSE SECTION THROUGH ACCESS CHANNEL DREDGE AREA
TRANSVERSE SECTION THROUGH RESERVE BASIN DREDGE AREA
TRANSVERSE SECTION THROUGH RESERVE BASIN DREDGE AREA
A
V-002
B
V-002
C
V-002
DREDGING AND DESIGN NOTES
V-002
2. CONTRACT DEPTHS AND OVERDREDGE DEPTHS SHOWN HEREIN REFER TO NOAA
MEAN LOWER LOW WATER DATUM (MLLW).
APPROVED
By James S. Georgo, P.E. at 4:01:57 PM, 11/4/2025
RB-C
RB-D
RB-A
RB-A
7/8
FY
M
A
IN
TE
N
A N
C E
D R
E D
G
S E
R V
E B
A S
IN
P H
IL
A
D E
LP
H
IA
N
A V
Y Y
A R
D
N A
V A
L
FA
C
IL
IT
IE
S E
N G
IN
E
E R
IN
G
C O
M M
A N
D
M
ID
A
TL
A N
TRANSVERSE SECTION THROUGH ACCESS CHANNEL DREDGE AREAE
V-101
TRANSVERSE SECTION THROUGH ACCESS CHANNEL DREDGE AREAD
V-101
TRANSVERSE SECTION THROUGH ACCESS CHANNEL AT EXISTING 15 KV SUBMARINE CABLEF
V-101
SECTION THROUGH DREDGING AT EXISTING 15 KV SUBMARINE CABLEG
V-101
DREDGING PLAN - GRAPHIC SCALE
V-101
1. SOUNDINGS SHOWN ON THIS SHEET REFER TO NOAA MEAN LOWER LOW WATER DATUM (MLLW).
-1 7-
JS
G
APPROVED
By James S. Georgo, P.E. at 1:00:32 PM, 11/4/2025
| PNY_Reserve Basin FY26 Maintenence Dredging-V-001 TITLE.pdf (p.1) |
| PNY_Reserve Basin FY26 Maintenence Dredging-V-001 TITLE |
| PNY_Reserve Basin FY26 Maintenence Dredging-V-101 RESERVE BASIN - SOUTH.pdf (p.3) |
| PNY_Reserve Basin FY26 Maintenence Dredging-V-101 RESERVE BASIN - SOUTH |
| 2025-11-04T16:28:47-0500 | |
| GEORGO.JAMES.S.1392763089 |
| 2025-11-05T15:25:17-0500 | |
| Norfolk, VA | |
| James E. Donahue, R.A. | |
| I, James E. Donahue, R.A., am signing this document to confirm that it has been reviewed. |
2025-11-05T15:10:32-0500
| 2025-11-05T15:25:13-0500 | |
| Norfolk, VA | |
| James E. Donahue, R.A. | |
| I, James E. Donahue, R.A., am signing this document to confirm that it has been reviewed. |
| 2025-11-05T15:25:12-0500 | |
| Norfolk, VA | |
| James E. Donahue, R.A. | |
| I, James E. Donahue, R.A., am signing this document to confirm that it has been reviewed. |
2025-11-05T15:19:27-0500
2025-11-05T15:10:40-0500
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