Notice to Bidders Energy Northwest, a joint operating agency and municipal corporation of the State of Washington, invites Bids for Industrial Development Complex Landfill Cover at Columbia Generating Station from qualified Bidders. Bidder will be selected in accordance with RCW §43.52.560. This Invitation for Bid (IFB) is subject to prevailing wage requirements pursuant to chapter 39.12 RCW. For a copy of these documents please reach out to Stacy Jackson at sjackson@energy-northwest.com IPL0372997 Sep 11 2026