Below are EPA's National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) permit and supporting documents for the City of Lewiston and Lewis-Clark State College in Idaho.
Permit number: IDS028061
Effective date: November 1, 2020
Permit expires: September 30, 2025
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NPDES Stormwater Permit, City of Lewiston and Lewis-Clark State College MS4s, Idaho, #IDS028061 (PDF)(62 pp, 719 K,
September 15, 2020)
Final stormwater permit.
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NPDES Permit Fact Sheet, City of Lewiston and Lewis-Clark State College MS4s, Idaho, #IDS028061 (PDF)(70 pp, 2 MB,
December 2018)
Technical basis for permit.
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Response to Comments on Draft NPDES Permit for City of Lewiston and Lewis-Clark State College MS4s, Idaho, #IDS028061 (PDF)(56 pp, 4 MB,
September 2020)
EPA's responses to public comments on the December 2018 draft permit.
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Appendix B1: Stormwater Management Program Template, NPDES Permit #IDS028061 (PDF)(25 pp, 1 MB)
Optional template for creating or revising Stormwater Management Program (SWMP) document.
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Appendix B2: Annual Report Form, NPDES Permit #IDS028061 (PDF)(22 pp, 984 K)
Format for annual report. Due no later than December 1 of each year.