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NPDES Stormwater Permit for Idaho Transportation Department District 1 MS4

Below are EPA's National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) final permit and supporting documents for the Idaho Transportation Department District 1 (ITD1) within the Coeur d'Alene Urbanized Area in Kootenai County, Idaho.

  • Permit number: IDS028223
  • Effective date: December 1, 2020
  • Permit expires: September 30, 2025

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