Tri County Landfill Co Waste Management Of Illinois Inc

⚠ Superfund · Ready for anticipated reuse

EPA completed a five-year review of the Tri-County/Elgin Landfills Superfund site in July 2019. The site is located at 7N 500 Illinois Route 25, Elgin, Illinois. The Superfund law requires regular checkups of sites that have been cleaned up – with waste managed on-site – to make sure the cleanup continues to protect people and the environment.

Location

CityElgin
CountyKane County
StateIllinois
Coordinates41.98320, -88.27120

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 02/01/1983
  2. Proposed to the National Priorities List — 06/10/1986
  3. Finalized on the National Priorities List — 03/31/1989
  4. Remedial Investigation Started — 04/22/1988
  5. Final Remedy Selected — 09/30/1992
  6. Remedial Action Started — 06/14/1999
  7. Final Remedial Action Started — 04/19/2001
  8. Construction Completed — 11/01/2001
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — 08/27/2024

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Tri County Landfill Co Waste Management Of Illinois Inc is a federal Superfund site in Illinois. 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 1,2-dichloroethene (cis and trans mixture), 2-butanone (methyl ethyl ketone), antimony. Contamination has been detected in groundwater, soil.

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.