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Draft Discharge Permits for Federal Hydroelectric Projects in the Lower Snake River

EPA accepted public comments on these draft permits from January 15 through February 16, 2021. Copies of the comments we received are available below.

EPA is proposing to issue National Pollutant Discharge Elimination System (NPDES) for the following four hydroelectric generating facilities on the lower Snake River operated by the United States Army Corps of Engineers:

  • Ice Harbor Lock and Dam (WA0026816).
  • Lower Monumental Lock and Dam (WA0026808).
  • Little Goose Lock and Dam (WA0026786).
  • Lower Granite Lock and Dam (WA0026794).

On March 18, 2020, EPA proposed for public comment NPDES permits to authorize the discharges from the Lower Snake River Hydroelectric Generating Facilities. The public notice closed on May 4, 2020. The draft permits did not include heat load effluent limits. EPA is proposing changes to the draft permits to include heat load effluent limits and is seeking public comment on these limits. The revised draft permits and supporting documents are available for review below.

Related permits: Draft Discharge Permits for Federal Hydroelectric Projects in the Lower Columbia River


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