- Why is EPA cleaning up the harbor?
- What progress is being made?
- How much longer will this cleanup take?
A busy commercial seaport, New Bedford Harbor works to support its surrounding communities as it did through the whaling and industrial times, but the harbor environment struggles from a more recent past of electrical device production which caused it to be one of EPA's largest Superfund cleanup sites.
The harbor is an 18,000-acre urban estuary with sediment highly contaminated with polychlorinated biphenyls (PCBs) and heavy metals. From the 1940s until EPA banned the production of PCBs in the 1970s, two manufacturing facilities improperly disposed of industrial wastes containing PCBs, contaminating the harbor bottom for about six miles from the Acushnet River into Buzzards Bay. The harbor was placed on EPA's National Priorities List in 1982, and continues to require significant time and funding to clean up.
After extensive testing of water quality, harbor sediment, air quality and locally caught fish and shellfish, it was clear that the PCBs in the sediment posed a serious risk to human health and the environment. PCBs do not break down easily in the natural environment, and left untouched, continue to pose a risk within the local food chain.
EPA's greatest concern is the possibility of people eating contaminated locally caught seafood. The build-up of PCB levels within the marine life has resulted in restrictions on fishing, shellfishing and lobstering in and around the harbor. These will remain in place until PCB levels decrease. Annual seafood data is collected to ensure that the current restrictions protect human health. Learn more about PCBs.
- Brief Site Summary, October 2014 (PDF) (7 pp, 644 K)
Dredging of the Upper New Bedford Harbor continues in 2017.
Prior to the start of the full-scale dredging program in 2004, EPA and the Army Corps of Engineers performed multiple targeted cleanup actions within the harbor and along the shoreline that removed some of the highest levels of PCB contamination, known as "Hot Spot" areas.
Approximately 450,000 of PCB-contaminated sediment has been addressed in the Upper Harbor as required by the 1998 cleanup plan as of April 2017, including dredging and off-site disposal.
This is in addition to the dredging of approximately 82,000 cubic yards as of December 2016 performed in the Lower Harbor, followed by disposal in the Lower Harbor CAD Cell. During 2017 and 2018 it is anticipated that an additional 137,000-170,000 cubic yards will be dredged and disposed of in the Lower Harbor CAD Cell.
EPA is working tirelessly to return the New Bedford Harbor environment to a healthy state once again. Before the settlement was finalized, the cleanup timeline was estimated to take another 30-40 years, a worst case scenario that no one found acceptable. With the finalization of the settlement, EPA estimates the cleanup timeline to be 5-7 years.