Koppers Co Inc Charleston Plant

⚠ Superfund · Ready for anticipated reuse

The most recent Five Year Review was published by EPA HQs in 2018. The remedy at the Site protects human health and the environment because contaminated soils and sediments have been excavated, treated, and/or stabilized/solidified.

Location

CityCharleston
CountyCharleston County
StateSouth Carolina
Coordinates32.82208, -79.95833

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 06/01/1980
  2. Proposed to the National Priorities List — 02/07/1992
  3. Finalized on the National Priorities List — 12/16/1994
  4. Remedial Investigation Started — 01/14/1993
  5. Remedy Selected — 03/29/1995
  6. Final Remedy Selected — 04/29/1998
  7. Remedial Action Started — 03/25/1996
  8. Final Remedial Action Started — 09/10/2019
  9. Construction Completed — 09/25/2003
  10. Deleted from National Priorities List — Not Yet Achieved

EPA references

Other Superfund sites in Charleston County

EPA-regulated facilities nearby

Understanding this Superfund site

Koppers Co Inc Charleston Plant is a federal Superfund site in South Carolina. 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: Ready for anticipated reuse. EPA considers this site ready for anticipated reuse, meaning cleanup has progressed enough for certain land uses. This does not necessarily mean all contamination has been removed — institutional controls like deed restrictions may limit how the land can be used.

EPA has identified 10 contaminants of concern at this site, including arsenic, benzene, benzo[a]pyrene. Contamination has been detected in soil, sediment, surface water, groundwater, free-phase napl.

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.