Superfund Information Systems: Site Profile

Superfund Site:

DEWEY LOEFFEL LANDFILL
NASSAU, NY

Health & Environment

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What Are the Risks at the Site?

In the 1950’s and 1960’s, the Dewey Loeffel Landfill site property was used as a disposal facility for more than 46,000 tons of industrial hazardous wastes, including solvents, waste oils, polychlorinated biphenyls (PCBs), scrap materials, sludges and solids. Some hazardous substances, including volatile organic compounds (VOCs) and PCBs, have migrated from the landfill to underlying aquifers and downstream surface water bodies, resulting in contamination of groundwater, surface water, sediments and several species of fish. There is currently a fish consumption advisory for the Valatie Kill, Nassau Lake and Kinderhook Lake.

A groundwater plume has been traced to extend south of the landfill to the vicinity of Central Nassau Road, approximately ½ mile from the site. Four residential drinking water wells on Central Nassau Road and one north of the site have been impacted by VOCs. The water from these wells is treated by point of use (POU) treatment systems installed, maintained, and routinely monitored by GE and SI Group. Routine monitoring is also performed for more than 20 additional residential potable wells in the vicinity of the site.

In 2013, an updated health consultation was completed for the site by New York State Department of Health (DOH) and the Agency for Toxic Substances and Diseases Registry (ATSDR) to provide information to the public regarding whether and how people might contact contaminants from the site, and any potential health risks that could result from such contact. The health consultation is available by clicking here.

 

 

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Contaminant Information

View a full list of contaminants of concern for this site.

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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.

Performance
Measure
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 Yes

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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