Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the U.S Bureau of Reclamation Grand Coulee Dam wastewater treatment plant discharging to the Columbia River in Washington.
- Permit number: WA0024163
- Effective date: August 1, 2014
- Permit expires: July 31, 2019 (administratively continued)
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NPDES Permit, Grand Coulee Dam, Washington, #WA0024163 (PDF)(23 pp, 156 K,
NPDES Permit Fact Sheet, Grand Coulee Dam, Washington, #WA0024163 (PDF)(40 pp, 418 K,
Provides technical basis for NPDES permit.
Response to Comments, NPDES Permit for Grand Coulee Dam, Washington, #WA0024163 (PDF)(1 pg, 14 K,
EPA's responses to public comments received on the draft permit.