Maintenance Dredging of Green Harbor, Marshfield, Massachusetts, Federal Navigation Project   2

Background
The proposed work in the FNP consists of maintenance dredging of the 6-foot and 8 feet deep entrance channel and of the 6-foot-deep inner harbor anchorage area. The project will require dredging of about 44,000 cubic yards (CY) of mixed sandy and silty material from the anchorage area and approximately 15,000 CY of sand and cobbles from the entrance channel. This project will require floating marine plant consisting in part of a barge-mounted mechanical (bucket) dredge, two or more scows for hauling the dredged materials, tugs to position the dredge and tow the scows, workboats to transfer crew, and survey boats. Dredging and disposal operations are expected to take about three months to complete. The available work window for this project is from 1 October to 31 January as outlined above. Contingent upon receiving competitive bids, work is anticipated to start in October 2023.

Work Details
The project involves dredging approximately 44,000 cubic yards (CY) of mixed sandy and silty material from the anchorage area and about 15,000 CY of sand and cobbles from the entrance channel. Material dredged from the entrance channel will be placed at a previously used nearshore area, a haul distance of about 1 nautical mile from the harbor. Material dredged from the anchorage will be hauled to, and placed at, the Cape Cod Bay Disposal Site, about 13 nautical miles away from the harbor. The proposed work includes maintenance dredging of Green Harbor, Marshfield, Massachusetts, Federal Navigation Project. The project will require floating marine plant consisting in part of a barge-mounted mechanical (bucket) dredge, two or more scows for hauling the dredged materials, tugs to position the dredge and tow the scows, workboats to transfer crew, and survey boats.

Period of Performance
The period of performance for this contract is expected to be from October 2023 to January 2024.

Place of Performance
The construction projects will be performed at Green Harbor, Marshfield, Massachusetts.