Bunker Hill Mining Metallurgical Complex

⚠ Superfund · Cleanup underway

Since the cleanup began, the area has become a healthier place to live, work, and play. Over 7, 000 yards and public spaces have been "remediated, " or cleaned up. Hillsides are lush and green again. The Trail of the Coeur d'Alenes draws recreationalists and visitors' season after season. Many roads in the valley have been repaired to protect public health.

Location

CitySmelterville
CountyShoshone County
StateIdaho
Coordinates47.54306, -116.16170

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 08/13/1982
  2. Proposed to the National Priorities List — 12/30/1982
  3. Finalized on the National Priorities List — 09/08/1983
  4. Remedial Investigation Started — 01/02/1985
  5. Remedy Selected — 08/30/1991
  6. Remedial Action Started — 01/31/1994
  7. Construction Completed — Not Yet Achieved
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 09/30/2021
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Bunker Hill Mining Metallurgical Complex is a federal Superfund site in Idaho. 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: Cleanup underway. Active cleanup is underway, meaning EPA has approved a remediation plan and work is in progress. Cleanup timelines vary widely — some sites take decades depending on contamination depth, groundwater involvement, and funding availability.

EPA has identified 10 contaminants of concern at this site, including antimony, arsenic, asbestos. Contamination has been detected in buildings/structures, surface water, solid waste, 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.