EPA signed a Record of Decision Amendment (PDF) in August 2022 to address soils, sediments, and dense non-aqueous phase liquids (DNAPL) at the Koppers Co., Inc. Superfund site. EPA considered all comments received on the 2021 Proposed Remedial Action Plan (PDF) in preparation for the Record of Decision Amendment.
| City | Newport |
|---|---|
| County | New Castle County |
| State | Delaware |
| Coordinates | 39.70472, -75.62417 |
Koppers Co Inc Newport Plant is a federal Superfund site in Delaware. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.
Current status: Remedy selected. EPA has selected a cleanup remedy but construction has not yet begun. The remedy selection process involves a feasibility study, public comment period, and a Record of Decision documenting the chosen approach.
EPA has identified 10 contaminants of concern at this site, including 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane, 1,2-dihydroacenaphthylene. Contamination has been detected in soil, groundwater, sediment.
If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.