US Army Corps of Engineers
Northwestern Division Website

Columbia River

External Links

State Total Dissolved Gas Waivers

Oregon Department of Environmental Quality (ODEQ)

Washington Department of Ecology (DOE)

  • USACE request for 2019-2021 waiver from WDOE
  • 2018 Gas Abatement Plan
  • WDOE approval letter of 2018 Gas Abatement Plan
  • 2019-2021 Washington Department of Ecology (3 Year Waiver)