
Nassau Lake, located in Rensselaer County, New York, is currently polluted with PCBs, industrial hazardous waste, and carcinogens from the Dewey Loeffel Landfill. The landfill site has contaminated the groundwater, soil, sediment, and surface water bodies, impacting the surrounding environment and potentially posing risks to human health. Due to the contamination, there is a ban on fish consumption in Nassau Lake, and the EPA is investigating and overseeing cleanup efforts. So, is Nassau Lake still polluted? The short answer is yes, but active investigations and remediation efforts are underway to address the pollution and mitigate its impacts.
| Characteristics | Values |
|---|---|
| Location | Rensselaer County, New York |
| Owner | Nassau Lake Park Improvement Association |
| Pollution Source | Dewey Loeffel Landfill |
| Pollution Type | PCBs, industrial hazardous waste, carcinogens, volatile organic compounds (VOCs) |
| Current Status | Fish consumption ban in place, under investigation by the EPA |
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What You'll Learn
- Nassau Lake is polluted with PCBs, industrial waste, and carcinogens
- The source of the pollution is the Dewey Loeffel Landfill
- Nassau Lake is a census-designated place in Rensselaer County, New York
- Nassau Lake is owned and maintained by the Nassau Lake Park Improvement Association
- The EPA is investigating the landfill and developing cleanup options

Nassau Lake is polluted with PCBs, industrial waste, and carcinogens
Nassau Lake, located in Rensselaer County, New York, is currently polluted with PCBs, industrial hazardous waste, and carcinogens from the Dewey Loeffel Landfill. The landfill, which is located just four miles from the village of Nassau, has contaminated the groundwater, soil, sediment, and surface water in the area, including Nassau Lake.
The pollution of Nassau Lake has had significant impacts on the local community and environment. Due to the contamination, there is currently a ban on fish consumption in the lake, as it has been found to contain high levels of PCBs and other hazardous substances. PCBs, or polychlorinated biphenyls, are toxic compounds that can have adverse effects on human health and the environment. They are persistent organic pollutants that can accumulate in the fatty tissues of fish and other animals, leading to health risks for humans and wildlife that consume them.
The Dewey Loeffel Landfill has a long history of pollution and environmental issues. As early as 1968, the state of New York ordered the operator to stop discharges and perform cleanup work due to community complaints, documented fish and cattle kills, and uncontrolled fires at the site. Despite these efforts, the site continues to impact the nearby water bodies, including Nassau Lake.
In recent years, there have been increased efforts to address the pollution in Nassau Lake and hold responsible parties accountable. The site was added to the EPA's investigations and feasibility studies to determine the extent of the contamination and potential cleanup options. The results of these studies have shown the continuing presence of PCBs and other hazardous substances in the lake and surrounding environment.
The pollution of Nassau Lake is a complex issue that requires further investigation and remediation. It is important to address the contamination and its impacts on the local community and environment. The efforts of the EPA and other organizations provide hope for the future of Nassau Lake and the surrounding area.
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The source of the pollution is the Dewey Loeffel Landfill
Nassau Lake, a reservoir in Rensselaer County, New York, is currently polluted due to industrial hazardous waste and carcinogens from the Dewey Loeffel Landfill. The landfill, operated by Loeffel Waste Oil Removal and Service Company, served as a disposal facility for several companies, including General Electric, Bendix Corporation, and Schenectady Chemicals, in the 1950s and 1960s. During this period, it is estimated that over 46,000 tons of hazardous waste, including solvents, waste oils, polychlorinated biphenyls (PCBs), scrap materials, sludges, and solids, were dumped at the site.
The landfill's contaminants have impacted the underlying aquifers and downstream surface water bodies, leading to the contamination of groundwater, surface water, sediments, and fish. This has resulted in a ban on fish consumption in Nassau Lake and its tributaries due to the presence of hazardous substances like volatile organic compounds (VOCs) and PCBs. The Dewey Loeffel Landfill has been identified as an EPA superfund site, and the Environmental Protection Agency has placed it on its National Priority List to address the pollution and its impacts.
The pollution of Nassau Lake has been a long-standing issue, with the landfill leaking contaminants into local ground and surface water sources since the 1950s. Despite prior containment efforts, sediment samples collected by the EPA in 2009 indicated a continued presence of PCBs. The state of New York has been actively involved in addressing the pollution, with the New York State Department of Environmental Conservation (NYSDEC) conducting investigations and cleanup actions under its Superfund program since 1980.
The contamination has had significant ecological and health impacts. Nassau Lake, once known for its recreation and fishing opportunities, has suffered from the effects of contamination, impacting the local ecosystem and potentially affecting the health of residents, their pets, and wildlife. The cleanup process has been challenging, and despite efforts, contaminants continue to seep into the groundwater due to the fractured bedrock beneath the containment wall.
The Community Advisory Group (CAG) was founded in 2019 to facilitate communication about future plans for the lake and pollution. The CAG works closely with the EPA to ensure timely cleanup, the removal of all contaminants, and the full reclamation of the impacted sites. The EPA is currently conducting investigations to determine the nature and extent of the contamination and develop permanent cleanup options.
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Nassau Lake is a census-designated place in Rensselaer County, New York
Nassau Lake is a census-designated place (CDP) in Rensselaer County, New York, United States. It is situated in the towns of Schodack and Nassau, 3 miles west of the Town of Nassau and 13 miles southeast of Albany, the state capital. The census-designated place surrounds a lake of the same name, which was previously known as Hoag's Pond. The lake was created by Jonathan Hoag in 1792 when he constructed a dam that covered "the Vlaie" or "Beaver Meadow" with water.
The Nassau Lake CDP includes the hamlets of Rosecrans Park, Braeside, and Morey Park. The land surrounding the lake features these hamlets, with Morey Park at the north end, Braeside on the west side, and Rosecrans Park at the south end. The outlet of Nassau Lake, the Valatie Kill, flows south to Kinderhook Creek, eventually reaching the Hudson River.
The entire area surrounding Nassau Lake is part of the census-designated place. It was first listed as a CDP before the 2020 census. The lake and its dam are privately owned and maintained by the Nassau Lake Park Improvement Association, and the use of the lake and association properties is reserved for members of the association.
Nassau Lake is currently polluted, and there is a ban on fish consumption due to contamination from the nearby Dewey Loeffel Landfill. This landfill is an EPA superfund site, where several companies disposed of industrial hazardous waste, including PCBs, solvents, waste oils, and carcinogens, in the 1950s and 1960s. The pollution in Nassau Lake has led to the formation of a Community Advisory Group to address future plans regarding the lake and its pollution.
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Nassau Lake is owned and maintained by the Nassau Lake Park Improvement Association
Nassau Lake is a reservoir located in Rensselaer County, New York. The body of water was first known as Hoag's Pond when it was created by Jonathan Hoag in 1792 by constructing a dam over Beaver Meadow. Today, the lake is owned and maintained by the Nassau Lake Park Improvement Association.
The Nassau Lake Park Improvement Association maintains the lake and its dam, and only members of the association are allowed to use the lake and the association's properties. The land surrounding the lake includes the hamlets of Morey Park, Braeside, and Rosecrans Park, and it is part of the Nassau Lake census-designated place.
The lake has been facing issues with pollution from the Dewey Loeffel Landfill, which has resulted in a ban on fish consumption. The pollution includes PCBs, industrial hazardous waste, and carcinogens. In 2019, a Community Advisory Group was founded to address the pollution and communicate future plans for the lake.
Despite the pollution, the Nassau Lake Park Improvement Association has been working to maintain and improve the lake for its members. The association's efforts to address the pollution and improve the lake's health are ongoing. The association is responsible for ensuring that the lake is well-maintained and safe for recreational use by its members, and they work to address any issues that may arise.
The Nassau Lake Park Improvement Association's ownership and maintenance of Nassau Lake demonstrate a commitment to preserving this natural resource for the enjoyment of its members and the surrounding community. Their efforts to address pollution and improve the lake's health are essential to ensuring that Nassau Lake remains a valuable asset for the area.
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The EPA is investigating the landfill and developing cleanup options
Nassau Lake, a census-designated place in Rensselaer County, New York, has been facing issues with pollution. The lake, which was once known for its recreational and fishing opportunities, has been impacted by contamination from the nearby Dewey Loeffel Landfill. The landfill has led to the presence of industrial hazardous waste, carcinogens, and polychlorinated biphenyls (PCBs) in the lake. As a result, there is currently a ban on fish consumption in Nassau Lake.
The Dewey Loeffel Landfill site has a long history of contamination. Since 1968, there have been complaints from the community, including documented fish and cattle kills and uncontrolled fires. The New York State Department of Environmental Conservation (NYSDEC) and potentially responsible parties (PRPs) conducted investigations and cleanup actions under the NYSDEC's Superfund program from 1980 until 2011. Despite these efforts, the contamination has persisted, and the site was added to the federal Superfund National Priorities List (NPL) in March 2011.
The United States Environmental Protection Agency (EPA) is currently investigating the landfill and developing cleanup options. The EPA is overseeing three separate investigations: the landfill/groundwater, the drainage ways, and Little Thunder Brook. These investigations, referred to as Remedial Investigations/Feasibility Studies (RI/FS), aim to determine the nature and extent of contamination, assess potential risks to human health and the environment, and evaluate potential cleanup alternatives. The EPA has already conducted extensive sampling and investigations of groundwater, soil, surface water, and sediment.
The EPA's investigations have confirmed the presence of hazardous substances, including volatile organic compounds (VOCs) and PCBs, which have migrated from the facility to impact groundwater, surface water, sediment, and fish tissue. The EPA is working to develop permanent cleanup options for the site, with a focus on addressing the contamination and protecting human health and the environment. The EPA's efforts are ongoing, and the development of cleanup options is expected to be informed by the findings of the RI/FS investigations.
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Frequently asked questions
Yes, Nassau Lake is currently polluted with PCBs, industrial hazardous waste, and carcinogens from the Dewey Loeffel Landfill.
The Dewey Loeffel Landfill is a Superfund site located four miles northeast of Nassau Village. It contains approximately 46,000 tons of hazardous waste, including volatile organic compounds (VOCs) and polychlorinated biphenyls (PCBs).
The Environmental Protection Agency (EPA) is overseeing three separate investigations of the landfill/groundwater, the drainageways, and Little Thunder Brook. The EPA added the Dewey Loeffel Landfill site to the National Priorities List (NPL) in March 2011. The purpose of these investigations is to determine the nature and extent of the contamination, assess potential risks, and evaluate cleanup alternatives.











































