An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Optimization Review: Bunker Hill Mining and Metallurgical Complex Superfund Site, Central Treatment Plant (CTP), Kellogg, Shoshone County, Idaho

The Bunker Hill Mining and Metallurgical Complex Superfund Site includes all areas of the Coeur d’Alene Basin where mining-related contamination occurred and encompasses a 21-square mile “Box” along Interstate 90 surrounding the former smelter complex. Operable Unit 1 (OU1) includes the populated areas and Operable Unit 2 (OU2) includes the non-populated areas within the “Box.” Operable Unit 3 (OU3) includes areas outside of the “Box” from near the Idaho-Montana border to the State of Washington where mining-related contamination is present.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Optimization Review: Bunker Hill Mining and Metallurgical Complex Superfund Site, Central Treatment Plant (CTP), Kellogg, Shoshone County, Idaho (PDF)(51 pp, 3 MB, 2013, 542-R-13-004)