Envirochem Corp

⚠ Superfund · Construction complete

Since 2003, EPA has conducted five (5) Five-Year Reviews of the site’s remedy. These reviews ensure that the remedies put in place protect public health and the environment, and function as intended by site decision documents.

Location

CityZionsville
CountyBoone County
StateIndiana
Coordinates40.02935, -86.27903

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 08/01/1982
  2. Proposed to the National Priorities List — 12/30/1982
  3. Finalized on the National Priorities List — 09/08/1983
  4. Remedial Investigation Started — 03/11/1983
  5. Remedy Selected — 09/25/1987
  6. Final Remedy Selected — 06/07/1991
  7. Remedial Action Started — 07/30/1993
  8. Final Remedial Action Started — 11/20/1997
  9. Construction Completed — 09/03/2009
  10. Deleted from National Priorities List — Not Yet Achieved

EPA references

Other Superfund sites in Boone County

EPA-regulated facilities nearby

Understanding this Superfund site

Envirochem Corp is a federal Superfund site in Indiana. 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 10 contaminants of concern at this site, including (e)-1,3-dichloro-1-propene, 1,1,1-trichloroethane, 1,1,2-trichloroethane. Contamination has been detected in groundwater, buildings/structures, sediment, 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.