NOTICE TO BIDDERS Proposals will be received by Energy Northwest via email until 1:00 PM (Local, Richland WA) on August 19, 2026, for the 500KV arrester: excavate,4-found. pours as more fully described in the Request for Proposal (RFP) No. 717526. All Proposals shall be subject to and comply with the RFP Documents. You can find a copy of these documents on our website. IPL0358187 Jul 17 2026