The Dewey Loeffel Landfill Superfund site is located in Rensselaer County, New York. In the 1950s and 1960s, site 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.

The Dewey Loeffel Landfill Site includes the inactive hazardous waste disposal area, a/k/a the landfill, and all areas to which contamination has migrated including groundwater, soil, sediment and surface water bodies. The approximately 19-acre waste disposal area is located four miles northeast of the Village of Nassau, within a low-lying area between two wooded hills. Formerly, the site was used as a dump for hazardous waste generated by several companies including General Electric (GE), Bendix Corporation (now Honeywell) and Schenectady Chemicals (now SI Group). The waste materials were dumped into a lagoon area, oil pit and drum burial area.

The New York State Department of Environmental Conservation (NYSDEC) has estimated that between 1952 and 1968 a total of 46,320 tons of waste materials were disposed at the landfill. The waste materials included industrial solvents, waste oils, polychlorinated biphenyls (PCBs), scrap materials, sludges and solids.

https://cumulis.epa.gov/supercpad/SiteProfiles/index.cfm?fuseaction=second.Cleanup&id=0201218#bkground

Multiple years looking at this development in East Greenbush, showing the transformation of a farm field into a commercial shopping center.