Pacific Power will construct, operate, and maintain a new 230-kilovolt (kV) transmission line from Pacific Power's Pomona Heights substation located east of Selah, Washington, in Yakima County, to the Bonneville Power Administration (BPA) Vantage Substation located east of the Wanapum Dam in Grant County, Washington. The existing Pacific Power Pomona Heights substation and BPA's Vantage substation will interconnect the new 230-kV transmission line to the regional electric grid.

The Bureau of Land Management (BLM) was the lead federal agency responsible for the preparation of an environmental impact statement (EIS) that addressed the potential effects of the Vantage to Pomona Heights 230-kV Transmission Line Project. BPA was a cooperating agency for the EIS. Additional project information can be obtained through the BLM Website.

The environmental review was as follows:

Scoping comment period January 5 to March 8, 2010
Scoping public meetings February 3 and 4, 2010
Draft EIS available for public comments January 4, 2013
Supplemental Draft EIS comment period January 2, 2015 to February 17, 2015
Supplemental Draft EIS public meetings January 28 and 29, 2015
Final EIS October 21, 2016
Record of Decision October 3, 2017


In October of 2017, BPA decided to interconnect the Vantage to Pomona Heights transmission line into the Federal Columbia River Transmission System (FCRTS) via the Vantage Substation. BPA’s construction activities are anticipated to start in early 2019.


For environmental information contact:
Katey Grange Toll Free: 800-622-4519
NEPA Compliance Officer  Direct Line: 503-230-4047
Bonneville Power Administration - ECT-4 Email: 
P.O. Box 3621
Portland, OR 97208-3621

For project information contact:
Rasha Kroonen Toll Free: 800-622-4519
Project Manager Direct Line: 360-619-6918
Bonneville Power Administration - TEPP-TPP-1  Email: 
P.O. Box 61409
Vancouver, WA 98666-1409


Record of Decision (10/3/2017)
Federal Register Notice of Availability (10/16/2017)

BLM Public Letter (10/21/2016)
Final EIS (10/21/2016)
Appendix A - Project Maps
Appendices B1-B3
Appendices B4-E
Appendices F-I

BLM Public Letter
Supplemental Draft EIS (01/02/2015)
Appendix A1 Maps 
Appendix A2 Maps 
Appendices B-E

BLM Public Letter
Draft EIS (01/04/2013)
Appendix A
Appendix B 
Appendix C 
Appendix D