Koppers Co Inc Morrisville Plant

⚠ Superfund · Construction complete

The most recent Five-Year Review was published September 2022. The remedy at the Site currently protects human health and the environment because contaminated soil and surface water have been addressed and there are no complete exposure pathways for contaminated groundwater.

Location

CityMorrisville
CountyWake County
StateNorth Carolina
Coordinates35.84630, -78.84060

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 06/17/1980
  2. Proposed to the National Priorities List — 06/24/1988
  3. Finalized on the National Priorities List — 03/31/1989
  4. Remedial Investigation Started — 03/14/1989
  5. Final Remedy Selected — 12/23/1992
  6. Final Remedial Action Started — 06/22/1995
  7. Construction Completed — 09/11/1997
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 09/09/2022
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

Other Superfund sites in Wake County

EPA-regulated facilities nearby

Understanding this Superfund site

Koppers Co Inc Morrisville Plant is a federal Superfund site in North 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: Construction complete. Physical construction of the cleanup remedy is complete, though long-term monitoring and institutional controls typically continue for years or decades. Groundwater treatment systems, for example, often run long after surface cleanup finishes.

EPA has identified 4 contaminants of concern at this site, including 2,4-dichlorophenol, dioxins and dibenzofurans, pentachlorophenol. Contamination has been detected in groundwater, soil, surface water.

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.