general motors (central foundry division)


The 270-acre site is bordered by the St. Lawrence River to the north, the St. Regis Mohawk Nation to the east, the Raquette River to the south, and property owned by Alcoa and Conrail to the west. There are approximately 4,000 St. Regis Mohawks living in the adjacent territory referred to as Akwesasne. The City of Cornwall, Ontario, with approximately 50,000 residents, is located approximately two miles north across the river, and the Village of Massena, with a population of 11,000, is located approximately seven miles to the east. The facility operated as an aluminum diecasting plant from 1959 to May 2009. Until 1980, PCBs were a component of hydraulic fluids used in diecasting machines at the facility. The site consists of several discrete areas—a 12-acre Industrial Landfill, the North Disposal Area, the East Disposal Area, four industrial lagoons, the St. Lawrence River, the Raquette River, on-site soils, and Tribal soils and sediments. PCBs are the primary contaminant of concern. The groundwater beneath the site is contaminated with PCBs and volatile organic compounds. During GM’s operations, PCB-laden sludge from one of the industrial lagoons and from the wastewater treatment plant was periodically removed to the North and East Disposal areas and to the Industrial Landfill. The Industrial Landfill also received foundry sand, soil and concrete excavated during plant construction, diecasting machines, and other solid industrial waste. The North Disposal Area received contaminated construction debris, soil and tree stumps. The East Disposal Area contains contaminated soil and sludge along with construction debris. The North and East Disposal Areas and the Industrial Landfill were not lined. Site Responsibility: The site is being addressed through potentially responsible party-performed actions. The plant's closing will have no impact on the cleanup progress or GM's responsibilites for the remediation of the Site.

Hazardous Ranking Score

41 / 100

A score of 28.5 or higher qualifies a site for the Superfund National Priority List.

Regional Contact

Region 2
Phone: (877) 251-4575

Contact Region



Site Inspection
Preliminary Assessment
Final Listing On NPL

Contaminants & Health Effects

      Endocrine Disrupter
      Reproductive Toxin
      Persistent, bioaccumulative and toxic


        African American
        American Indian and Alaska Native
        Native Hawaiian


        People living
        within a 1 mile radius


        Average Income


        Occupied homes

        Potentially Responsible Parties

        Similar Sites

        Add Story


        No stories have been submitted for this site.