About this file

This document is an approved plan set for FY 2026 Maintenance Dredging of the Reserve Basin at Philadelphia Navy Yard, developed by Naval Facilities Engineering Command (NAVFAC) Mid Atlantic location. The project involves dredging operations in the Reserve Basin and access channel at the Philadelphia Navy Yard in Philadelphia, Pennsylvania, with dredged material disposal planned for potential locations in Pennsylvania and New Jersey, including the Delaware River Whites Rehandling Basin and Biles Island CDF.

The plan includes site plans, transverse sections, and dredging details for multiple dredge areas (RB-A, RB-A7/8, RB-C, RB-D) within the Reserve Basin. Key features documented include disposal methodology via spud barge with pumps and hydraulic offloading pipeline to Biles Island CDF, considerations for existing 15 kV submarine cables, and contract depths referenced to NOAA Mean Lower Low Water Datum (MLLW). The approved plan is identified as NAP-2024-00345-46, with design sign-off dated May 20, 2026, and reflects revisions per Army Corps of Engineers review comments as of July 17, 2025 and May 20, 2026.

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Approved Plan E-1
Approved Plans (revised)
Approved Plan E-6

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