EPA Superfund site
ROLLING KNOLLS LF
Human exposure is NOT currently under control
Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.
About this site's exposure pathways
As of May 2026, the Rolling Knolls Landfill Superfund site is considered “Current Human Exposure Not Under Control” (HENC). Residents, visitors, and trespassers are known or reasonably anticipated to be exposed through direct contact with landfill soils contaminated with polychlorinated biphenyls (PCBs) on and near the landfill, including areas frequented by passive recreators. Media with contaminants of concern include soil (PCBs; arsenic), and to a lesser extent shallow groundwater with isolated detections of metals, PCBs, benzene, and per‑ and polyfluoroalkyl substances (PFAS). Nearby wetlands and the Great Swamp National Wildlife Refuge border the site.
Currently, the planned activities to address this pathway include evaluating cleanup options and issuing a proposed plan (tentatively in 2027) for public comment, followed by selection and implementation of a soil remedy to reduce direct contact risks. EPA will also evaluate and implement institutional and engineering controls (e.g., fencing, signage, access management) and maintain long‑term monitoring. For groundwater, EPA will continue to evaluate PFAS and other contaminants and maintain land and groundwater use controls; potable supply is public water, and the shallow groundwater is not used for drinking.
If you may be affected, you can reduce your exposure by avoiding trespassing on the landfill, staying off bare or disturbed soils, keeping children and pets away from contaminated areas, washing hands after outdoor activities, and following posted signs and local advisories. For assistance, contact the EPA Community Involvement Coordinator Olivia Cappo via the site webpage or at (212) 637-3532 or [email protected].
EPA currently anticipates that human exposure will be under control by September 2037 because the soil remedy will be constructed across affected areas, institutional and engineering controls will be fully implemented and effective, and confirmation sampling and monitoring will demonstrate that risk‑based cleanup goals have been achieved, as reflected in the Superfund Enterprise Management System (SEMS). EPA will continue to meet with residents and stakeholders, issue public notices and fact sheets, and keep the site profile on EPA’s website up to date. A Community Advisory Group (CAG) has been established to share information and gather community input.