EPA Superfund Site

DIAMOND HEAD OIL REFINERY DIV.

NJ | EPA ID NJD092226000

About this site’s exposure pathways: As of January 2025, there is insufficient information available to determine the site-wide Human Exposure Control at the Diamond Head Oil Refinery Superfund Site. The site is fenced and abandoned, and early investigations did not identify a need for any short-term response actions beyond preventing access. Contaminants at the site include chromium, lead, dioxin, polychlorinated biphenyls (PCB) aldrin and PCB aroclors in soil and sediment. At one time an "oil lake" was present over portions of the site, and remnants of this release are still evident in site samples. In 2009, EPA selected an early action remedy to address the remnants of the "oil lake". A bench scale study indicated the selected remedy would not be effective. In 2017, EPA amended the remedy to address the oil lake remnants and also issued a Record of Decision (ROD) to address contaminated soil and sediment at the remainder of the site. The remedy to address the remnants of the oil lake as well as soil and sediment is currently under construction. The groundwater for the site is to be addressed under a separate operable unit.

EPA currently anticipates that there will be sufficient data to make a Human Exposure evaluation by September 2033, upon completion of this risk assessment, selection of this remedy, and when the ROD is signed.

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.