Maintenance dredging, naval weapons station (NWS) earle

The project consists of Maintenance Dredging the areas surrounding piers at Naval Weapons Station (NWS) Earle including all berths, turning basin, terminal channel, and a portion of Sandy Hook Federal Channel. This project willbe done in order to re-establish the minimum required harbor depths needed for access by the Naval vessels that use these facilities.

Maintenance dredging shall be done via clamshell dredge, with a total estimated volume of 2,261,170 cubic yards (CY) of dredged material to a depth of -45 feet Mean LowerLow Water (MLLW) Datum, plus the standard 2 feet of overdepth of -47 Mean Lower Low Water (MLLW) Datum including the ship berths, the turning basin, the terminal channel and a portion of the Sandy Hook Federal Navigation Channel of the New York Harbor, N.Y. Federal Navigation Project (Sandy Hook Federal Channel). The dredged material would be placed into split-hull and/or bottom dumping scows maneuvered using a tugboat. Barge overflow is authorized when performed in accordance with the Water Quality Cerificate (WQC) issued by the New Jersey Department of Environmental Protection (NJDEP). The dredged material will be placed at the Historic Area Remediation Site (HARS) for the purpose of remediation.

There are nine (9) dredging areas, Dredging Areas B1, B2,, C1, C2, D, E, F, G and H and dredging will be conducted in two dredging phases. During Dredging Phase 1, the piers, turning basin and a portion of the Sandy Hook Channel (Area B1, B2, C1 and C2), consisting of 1,176,375 CY sand, silt, and mud, will be dredged in Summer 2022; and during Dredging Phase II, the remainder of the Sandy Hook Channel (Areas D, E, F, G and H), consisting of approximately 1,043,395 CY sand, will be dredged in Summer 2023.

The project schedule will allow for dredging work to be performed 24 hours/7 days per week and will require a minimum daily production rate of 7,500 CY per day.