NPDES Permit for Midnite Mine in Washington

Below is EPA's National Pollutant Discharge Elimination System (NPDES) permit for the Dawn Mining Company Midnite Mine discharging to the Spokane Arm of Lake Roosevelt on the Spokane Indian Reservation in eastern Washington.

• Permit number: WA0026841
• Effective date: January 1, 2019
• Permit expires: December 31, 2023 (administratively continued)

• NPDES Permit, Midnite Mine, #WA0026841 (pdf) (278.83 KB, November 15, 2017)
  Final permit.
• NPDES Permit Fact Sheet, Midnite Mine, #WA0026841 (pdf) (1.11 MB, April 2017)
  Technical basis for April 2017 draft permit.
• Response to Comments, Midnite Mine NPDES Permit, #WA0026841 (pdf) (72.17 KB, November 2017)
  EPA's responses to public comments on the April 2017 draft NPDES permit.