Superfund Information Systems: Site Profile

Superfund Site:


Health & Environment

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What Are the Risks at the Site?

The site is bounded by private residential properties to the north and northwest. While the majority of the site is privately held in a trust, U.S. Fish and Wildlife Service owns about 40 acres of the site, which is part of the larger Great Swamp National Wildlife Refuge that surrounds the site on the south, east and west. The site also includes a shooting range and ballfield owned by Green Village. Potenially exposed human populations were evaluated for existing and future site conditions and include landscapers, recreators, trespassers, off-site residents, construction workers and future on-site residents.

Analytical results of surface and subsurface soil, wetland sediment, surface water and groundwater samples taken to date, found elevated levels of arsenic, lead, mercury, polycyclic aromatic hydrocarons, pestcicides, phthalates, PCBs, VOCs, SVOCs, freon compounds, dioxin and furans, on both the privately and federally owned portions of the site. A baseline human health risk assessment was completed in 2014 and identified potential site risks to trespassers and future residential occupants. The baseline risk assessment was evaluated in 2016 to assess data gap sampling results and the risks identified remain the same. Access to the site is limited by surrounding wetlands and the property owners have posted no trespassing signs at the Britten Road access point. The land owners closely monitor for trespasser acitivity. A screening level ecological risk assessment was completed in 2013 and was followed by a baseline ecological risk assessment which is underway.

EPA is currently conducting a Remedial Investigation/Feasibility Study to further define the nature and extent of contamination at the site. Once the study is complete, EPA can determine the best cleanup method for the site. EPA ensures community participation throughout the remedial process by meeting with residents and affected stakeholders, issuing public notices and updating fact sheets. A site profile has been established on the EPA website to keep the community informed of recent progress at the site. Additionally, an EPA Community Involvement Coordinator is assigned to the site and can address specific community concerns as they arise.

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Performance Measures

EPA uses performance measures to track environmental results at Superfund sites. If you have any questions or concerns about the measures at this site, please contact the site team members listed under Site Contacts.

Read more about Superfund Remedial Performance Measures.

Status at this
Superfund Site
What does this mean?
Human Exposure Under Control Insufficient Data Yes means assessments indicate that across the entire site:
  1. There are currently no unacceptable human exposure pathways; and
  2. EPA has determined the site is under control for human exposure.

No means an unsafe level of contamination has been detected at the site and a reasonable expectation exists that people could be exposed.

Insufficient data means that, due to uncertainty regarding exposures, one cannot draw conclusions as to whether human exposures are controlled, typically because:
  1. Response to the contamination has not begun; or
  2. The response has begun, but it has not yet generated information sufficiently reliable to evaluate whether there are currently any unacceptable human exposure pathways at the site.
Groundwater Migration Under Control Insufficient Data

Yes means EPA reviewed all information on known and reasonably expected groundwater contamination. EPA concluded the migration of contaminated groundwater is stabilized and there is no unacceptable discharge to surface water. EPA will conduct monitoring to confirm that affected groundwater remains in the original area of contamination.

No means EPA has reviewed all information on known and reasonably expected groundwater contamination, and the migration of contaminated groundwater is not stabilized.

Insufficient data means that due to uncertainty regarding contaminated groundwater migration, EPA cannot draw conclusions as to whether the migration of contaminated groundwater is stabilized.

Construction Complete No

Yes means the physical construction of the cleanup is complete for the entire site.

No means either physical construction is not complete or actions are still needed to address contamination.

Sitewide Ready for Anticipated Use No Yes means:
  1. All cleanup goals affecting current and reasonably anticipated future land uses of the entire site have been achieved, so there are no unacceptable risks;
  2. All required land-use restrictions or other controls have been put in place; and
  3. The site has achieved Construction Complete status.

No means that one or more of these three criteria have not been met. However, a site listed as no may still have redevelopment occurring on portions of the site and may be eligible for additional redevelopment.

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