EPA Superfund Site

SHIELDALLOY CORP.

NJ | EPA ID NJD002365930

About this site’s exposure pathways: As of January 2025, there is insufficient information to determine the site-wide Human Exposure Control status at the Shieldalloy Superfund Site. The site has been divided into three parts, or Operable Units (OUs). OU1 addresses non-perchlorate contamination in the site groundwater; OU2 addresses non-perchlorate contamination in the soil, surface water and sediment; and OU3 addresses perchlorate contamination in all site media−soil, surface water, sediment and groundwater.

Remedies have been implemented for OU1 and OU2. The selected remedy for OU1 called for a combination of in-situ remediation and monitored natural attenuation; the remedy was completed with the approval of the remedial action report on December 8, 2020. The selected remedy for OU2 called for capping the 1.3 acres of vanadium- and chromium-impacted soils in the eastern storage areas of the facility, excavating approximately 9,800 cubic yards of Hudson Branch sediments, establishing institutional controls and monitoring the surface water; the OU2 remedy was completed with the approval of the remedial action report on September 23, 2020. Currently, a remedial investigation/feasibility study is being conducted for OU3 to determine the nature and extent of perchlorate contamination in groundwater at the site and identify the risks groundwater poses to human health and the environment. The potential exposure pathways for OU3 have that are currently being evaluated include drinking or direct contact with groundwater. The Remedial Investigation/Feasibility Study (RI/FS) is expected to be completed in 2026 at which time a sitewide human exposure determination can be made.

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.