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NPDES Permit for Thompson Creek Mining Company in Idaho

Transfer of permitting authority to Idaho. As of July 1, 2019, EPA has transferred authority to administer and enforce this permit to the Idaho Department of Environmental Quality. For more information, visit Idaho Pollutant Discharge Elimination System (IPDES) Program.

Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the Thompson Creek Mine near Challis, Idaho.

Permit number: ID0025402
Effective date: January 28, 2002
Permit expires: January 29, 2007 (administratively continued)

NPDES Permit, Thompson Creek Mining Company, Idaho, #ID0025402 (pdf) (December 13, 2001)
Final discharge permit.
NPDES Permit Fact Sheet, Thompson Creek Mining Company, Idaho, #ID0025402 (pdf) (June 2000)
Technical basis for permit.
Response to Comments on Draft NPDES Permit for Thompson Creek Mining Company, Idaho, #ID0025402 (pdf) (December 2001)
EPA's responses to public comments on the June 2000 draft permit.
Response to Comments, Appendix B, State Water Quality Certification, Thompson Creek Mining Company, Idaho, #ID0025402 (pdf) (January 2, 2001)
Clean Water Act Section 401 Certification by the Idaho Department of Environmental Quality.
Response to Comments, Appendix D, Draft Final Permit, Thompson Creek Mining Company, Idaho, #ID0025402 (pdf)
Strikeout version showing changes to draft permit as a result of comments received.