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Comment Period

Grant Co. PUD – Wanapum and Priest Rapids Dams

National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Oct. 25, 2019 - Nov. 25, 2019, 5 p.m.

We invite your comments on the NPDES permit applications for Grant County PUD – Wanapum Dam and Priest Rapids Dam. 

You can view the applications in our Water Quality Permiting and Reporting Information System (PARIS) database.

  • Permit No. WA0991028 for Wanapum Dam would allow the discharge of non-contact cooling water to the Columbia River from its facility located at 14353 Hwy 243 S, Beverly, WA.
  • Permit No. WA0991029 for Priest Rapids Dam would allow the discharge of non-contact cooling water to the Columbia River from its facility located at 29086 Hwy 243 S, Mattawa, WA.

We regulate wastewater released from municipalities and industries using the National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit. This permit regulates wastewater that goes directly into lakes, rivers, Puget Sound, or the ocean (surface water).  All wastewater must be treated before it goes into surface water to protect human health and aquatic life.  Learn more about water quality individual permits.

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Comment online

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Comment by mail

Cynthia Huwe
Department of Ecology
1250 West Alder Street
Union Gap, WA 98903
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Questions

Cynthia Huwe
WQ Permit Coordinator
cynthia.huwe@ecy.wa.gov
509-457-7105

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