News Stories

North Cove Dredging in Old Saybrook continues

USACE, New England District
Published Feb. 28, 2018
A dredge excavates material from the North Cove Federal Navigation project in Old Saybrook, Connecticut.

A dredge excavates material from the North Cove Federal Navigation project in Old Saybrook, Connecticut.

As one of the predominant small harbors at the mouth of the Connecticut River in the early 1900’s the North Cove Federal Navigation Project in Old Saybrook, Connecticut has seen its use slowly change over the years from a harbor of refuge for light commercial vessels at its inception to a fleet almost entirely comprised of small to medium sized recreational vessels used mainly from the spring through fall months.  The project has been maintained a number of times since it was authorized, with the most recent past dredging event  in 2008.  At that time, 175,000 cubic yards of sediment were removed, but due to funding constraints the authorized dimensions of the project were not obtained.  The current cycle of maintenance was initiated by the town of Old Saybrook when availability of the project began to be impacted during times of low tide.

Dredging areas include the 11-foot deep entrance channel, 11-foot deep anchorage and 6-foot deep anchorage.  DonJon Marine Company, Inc., of Hillside, New Jersey, is performing the work under a $4,283,562.50 contract awarded Sept. 20, 2017.  The company began dredging activities on Nov. 14, 2017, and has removed about 230,000 cubic yards of material from the project so far.  Approximately 286,000 cubic yards of predominantly silty sediment will be removed by mechanical dredge.. Approximately 56,000 cubic yards of material still needs to be dredged from the 6-foot anchorage area by the coordinated dredging window ending on March 31. 

The state of Connecticut is the sponsor for the project and bonded $7.5 million in 2015 for permitting, design and construction of the maintenance dredging project.  The project sponsor was instrumental in getting the funding needed to move forward with the project. With the extensive number of shallow draft projects nationwide competing for limited federal funding, this maintenance event would not have been possible without the financial support of the state of Connecticut and commitment of its Port Authority to make it happen. This project is unique for the District employing a second trans-loading dredge to transfer shoal material from small hopper scows used to access shallow portions of the project to large capacity dump scows. 

After the trans-loading process is complete the large dump scows are hauled to the Central Long Island Sound Disposal Site, about 35 miles away from the project, and placed at predesignated coordinates.  Additionally, the project will deploy a turbidity curtain during the latter stages of the project to allow dredging to continue into time of year restrictions to protect sensitive species. 

Despite equipment breakdowns and cold weather resulting in several inches of ice within the project, the contractor expects to complete the project this dredging season.

The Pawcatuck River Coastal Storm Risk Management Feasibility Study

   This proposed plan is presented  to facilitate public involvement in the review and commenting on the remedy selection process for the Nantucket Memorial Airport (NMA) Formerly Used Defense Site (FUDS.) 
    The Army Corps of Engineers is proposing a No Action under the Comprehensive Environmental Response, Compensation, and Liability Act for the Munitions Response Site-1, Project Number D01MA049901 at NMA located on Nantucket Island, MA.  The proposal was prepared using the Guide to Preparing Superfund Proposed Plans, Records of Decision, and Other Remedy Selection Decision Documents (USEPA, 1999).
    The final decision for NMA Site-1 site will be made after reviewing and considering all information submitted during the public comment period. The proposed decision may be modified based on new information or public comments. The public is encouraged to review and comment on the proposed plan.
    The FUDS program addresses the potential explosives safety, health, and environmental issues resulting from past munitions use at former defense sites under the Department of Defense (DoD) Military Munitions Response Program, established by the U.S. Congress under the Defense Environmental Restoration Program.  
    FUDS only applies to properties that transferred from DoD before October 17, 1986 and the first priority of USACE is the protection of human health, safety, and the environment. 
    The Army is the executive agent for the FUDS Program, and USACE is the lead agency for investigation/reporting and remedial decision-making at this munitions site with regulatory support provided by the Massachusetts Department of Environmental Protection (MassDEP).

Updated: 05 December 2016