State of Oregon: Facilities - Boardman to Hemingway Transmission Line

The Boardman to Hemingway Transmission Line is an approved, not yet constructed, facility that includes an ASC approved route approximately 270.8-mile-long single-circuit 500-kV electric transmission line that crosses five counties in Oregon, Morrow, Umatilla, Union, Baker, and Malheur counties. The approved facility also includes four ASC alternative routes of approximately 33.3 miles of transmission line. The RFA1 approved routes include four alternative 500-kV transmission line routes equaling approximately 8.8 miles. The approved facility also includes roads, communication stations, the Longhorn Station, and temporary construction areas.

Under review/Approved. On September 27, 2022, Council approved the Final Order on ASC and issued a site certificate for the facility. On September 22, 2023, Council approved the Final Order on RFA1 and issued the first amened site certificate. The approved but not yet constructed facility has a construction commencement deadline of October 6, 2026.

On June 30, 2023, the Department received a Preliminary Request for Amendment 2 (pRFA2) to the Boardman to Hemingway Transmission Line Site Certificate from the certificate holder. pRFA2 seeks Council approval to add area to the site boundary to allow siting of previously approved facility components in new locations, as well as a proposed midline capacitor station in the previously approved site boundary in Union County. The proposed site boundary additions include approximately 40.2 miles of 500-kV transmission line alternatives in each of the five affected counties, 135.5 miles of new or substantially modified access roads, and the addition of temporary construction work area alternatives. pRFA2 also includes requests to amend specific site certificate conditions. pRFA2, pRFA2 attachments and figures, and the Public Notice of the pRFA2 are available on the Timeline below.

Morrow, Umatilla, Union, Baker, Malheur, Owyhee (Idaho) counties.

Applicant/Certificate holder: Idaho Power Company

ODOE contact: Kellen Tardaewether

Applicant/Certificate holder contact: Joe Stippel

Project Amendment(s)

Display Name	Description	Display Date
Complete Request For Amendment 1 (RFA1)	RFA1 Attachments and Figures	06/08/2023
Preliminary Request for Amendment 2 (pRFA2)		06/30/2023
Final Order on RFA1	Attachments 2 through P1-6	09/22/2023
First Amended Site Certificate	Site Certificate Attachment A Mapset	09/22/2023

Project Timeline

Milestone	Additional Documents	Display Date
Notice of Intent		07/15/2010
Second Amended Project Order		07/26/2018
Complete Application (Large files)	Contents of the Application Exhibit A Exhibit B (Main) Exhibit B (Attachments B1-B4) Exhibit B (Attachments B5 Part 1) Exhibit B (Attachments B5 Part 2) Exhibit B (Attachments B6-B7a) Exhibit B (Attachments B7b) Exhibit C Exhibit D Exhibit E Exhibit F Exhibit G Exhibit H (Part 1) Exhibit H (Part 2) Exhibit I (Part 1) Exhibit I (Part 2) Exhibit J (Main Part 1) Exhibit J (Main Part 2) Exhibit J (Main Part 3) Exhibit J (JPA Part 1) Exhibit J (JPA Part 2) Exhibit J (JPA Part 3) Exhibit J (JPA Part 4) Exhibit J (Wetland Delineation Part 1) Exhibit J (Wetland Delineation Part 2) Exhibit J (Wetland Delineation Part 3) Exhibit J (Wetland Delineation Part 4) Exhibit J (Wetland Delineation Part 5) Exhibit J (Wetland Delineation Part 6) Exhibit K Exhibit L Exhibit M Exhibit N (Part 1) Exhibit N (Part 2) Exhibit O Exhibit P1 (Part 1 Main to Attachment P1-6) Exhibit P1 (Part 2a Attachment P1-7A) Exhibit P1 (Part 2b Attachment P1-7A) Exhibit P1 (Part 3 Attachment P1-7B) Exhibit P1 (Part 4a Attachment P1-8) Exhibit P1 (Part 4b Attachment P1-8) Exhibit P1 (Part 5 Attachment P1-9) Exhibit P2 (GRSG) Exhibit P3 (Elk) Exhibit Q Exhibit R Exhibit S Exhibit T Exhibit U Exhibit V Exhibit W Exhibit X Exhibit Y Exhibit Z Exhibit AA Exhibit BB Exhibit CC Exhibit DD	09/28/2018
Additions to Complete Application	Errata Table of Contents Exhibit C Errata Info Exhibit J Errata Info Exhibit K Errata Info Exhibit P Errata Info Exhibit Q Errata Info Exhibit R Errata Info Exhibit S Errata Info Redacted Exhibit S9 HPMP Errata Info Exhibit U Errata Info Exhibit W Errata Info Exhibit X Errata Info Exhibit AA Errata Info Exhibit BB Errata Info	03/28/2019
Final Order	Please contact the Department to receive any of the Attachments to the Final Order on ASC.	09/27/2022