Below are EPA's National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) permit and supporting documents for the Idaho Transportation Dept. District #2 (ITD2) within the Lewiston Urbanized Area in Nez Perce, County.
- Permit number: IDS028258
- Effective date: November 1, 2020
- Permit expires: September 30, 2025
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NPDES Stormwater Permit, Idaho Transportation Dept. District #2 MS4, #IDS028258 (PDF) (PDF)(56 pp, 602 K,
September 15, 2020)
Final stormwater permit.
NPDES Permit Fact Sheet, Idaho Transportation Dept. District #2 MS4, #IDS028258 (PDF)(63 pp, 3 MB,
Technical basis for permit.
Response to Comments on Draft NPDES Permit for Idaho Transportation Dept. District #2 MS4, #IDS028258 (PDF)(38 pp, 3 MB,
EPA's responses to public comments on the February 2020 draft permit.
Appendix B1: Stormwater Management Program Template, MS4 Permit #IDS028258 (PDF)(25 pp, 1 MB)
Optional template for creating or revising Stormwater Management Program (SWMP) document.
Appendix B2: Annual Report Form, MS4 Permit #IDS028258 (PDF)(21 pp, 844 K)
Format for annual report. Due no later than December 1 of each year.