EPA Superfund Site

MANSFIELD TRAIL DUMP

NJ | EPA ID NJN000206345

About this site’s exposure pathways: As of January 2025, the Mansfield Trail Dump site is considered Human Exposure Not Under Control due to site related contaminants (lead and polychlorinated biphenyls (PCBs),) being present in soil on one residential property located downgradient of the dump areas. Point-of-entry treatment (POET) systems have been installed in 19 residences to provide safe drinking water due to trichloroethylene (TCE) contamination. Sub-slab depressurization systems have been installed inside five residences impacted by vapor intrusion. The remedy selected for Operable Unit 1 (OU1) calls for construction of a waterline and connection to a water supply system to provide a source of potable water to residences with wells impacted by site-related contamination. This remedy is being implemented. Construction of the waterline is expected to start summer 2025. The Operable Unit 2 (OU2) remedy addresses the site-wide contaminated groundwater, residual soil contamination and related vapor intrusion at the site. The design of the OU2 remedy is underway and the first phase of the design was completed in December 2023. Institutional controls, such as a Classification Exception Area (CEA) or Well Restriction Area, will be required to restrict the installation of wells in the contaminated groundwater plume, at least while the remedy is being implemented. A deed notice will be required for capped areas (which do not include any residential properties).

EPA currently anticipates that human exposure will be under control by June 2028, when the OU2 Phase 2 Remedial Action (RA) is completed.

EPA ensures community participation throughout the remedial process by meeting with residents and affected stakeholders, issuing public notices and updating fact sheets. A site profile has been established on the EPA website to keep the community informed of recent progress at the site. Additionally, an EPA Community Involvement Coordinator is assigned to the site and can address specific community concerns as they arise. A Community Advisory Group (CAG) has been established to disseminate site information and solicit public comments on project activities.