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DEQ seeks comment on draft 401 water quality certification for the city of Lewiston and Lewis-Clark State College MS4 NPDES permit modification

Accepting comments from May 28, 2021, through June 18, 2021.

The Idaho Department of Environmental Quality (DEQ) is seeking comment on a draft 401 water quality certification for the city of Lewiston and Lewis-Clark State College municipal separate storm sewer system (MS4) National Pollutant Discharge Elimination System (NPDES) permit modification.

The city and Lewis-Clark State College discharge to the Clearwater River Lower Granite Dam Pool, Lindsay Creek, the Snake River, and Tammany Creek within the Clearwater, and Lower Snake Asotin Subbasin.

For discharge into the Clearwater River (Lower Granite Dam Pool), Lindsay Creek, Tammany Creek, and the Snake River, DEQ certifies, based upon its review of the above-referenced permit and associated fact sheet, that if the permittees comply with the terms and conditions imposed by the permit along with the conditions set forth in this water quality certification, then it is reasonable for DEQ to conclude that the discharge will comply with the applicable water quality requirements of Sections 301, 302, 303, 306, and 307 of the Clean Water Act, the Idaho Water Quality Standards (WQS) (IDAPA 58.01.02), and other appropriate water quality requirements of state law. For discharge into the Lewiston Levee Ponds, DEQ waives certification.

Written comments will be accepted through June 18, 2021, at 5 p.m. PDT. Submit comments electronically or by mail or email to:

Sujata Connell
Surface Water Quality Manager
DEQ Lewiston Regional Office
1118 F Street
Lewiston, ID 83501
Sujata.Connell@deq.idaho.gov

Related Documents

Draft Certification
Draft Modification
Fact Sheet
Public Notice

Public Comment Form

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