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NPDES Permit for Hecla Lucky Friday Mine in Idaho

Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the Hecla Limited Lucky Friday Mine near Mullan, Idaho.

Permit number: ID0000175
Effective date: August 1, 2019
Modified: November 1, 2020
Permit expires: July 31, 2024

2020 Revised NPDES Permit, Lucky Friday Mine, Idaho, #ID0000175 (pdf) (450.17 KB, September 10, 2020)
Revised final discharge permit.
2020 Statement of Basis, Lucky Friday Mine, Idaho, #ID0000175 (pdf) (648.24 KB, July 2020)
Technical basis for permit revision.
2020 Response to Comments on Revised Draft NPDES Permit for Hecla Lucky Friday Mine, Idaho, #ID0000175 (pdf) (360.39 KB, September 2020)
EPA's responses to public comments on the July 2020 revised draft permit.
2019 NPDES Permit Fact Sheet, Hecla Limited Lucky Friday Mine, Idaho, #ID0000175 (pdf) (1.5 MB, February 2019)
Technical basis for permit.
2019 Response to Comments on Draft NPDES Permit for Hecla Lucky Friday Mine, Idaho, #ID0000175 (pdf) (1.16 MB, May 2019)
EPA's responses to public comments on the February 2019 draft permit.