Notice of Permit Approval Rocky Mountain Power – Gateway West Transmission Line Project Before the Wyoming Industrial Siting Council Docket Number DEQ/ISC 12-10

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Wyoming Department of Environmental Quality

Notice of Permit Approval Rocky Mountain Power – Gateway West Transmission Line Project Before the Wyoming Industrial Siting Council Docket Number DEQ/ISC 12-10

Notice of Permit Approval. Pursuant to provisions in the Wyoming Industrial Development Information Act (W.S. 35-12-101 et seq.), notice is hereby given that the Gateway West Transmission Line Project of Rocky Mountain Power (Applicant) has received a Permit to construct from the Wyoming Industrial Siting Council. Records of the application and decision can be viewed during business hours in the offices of the Industrial Siting Division, Department of Environmental Quality, or on the Wyoming Department of Environmental Quality’s website at, http://deq.wyoming.gov/isd/application-permits/resources/gateway-west-transmission-line-project/ .

The Permit allows the Applicant to construct a total of 191.4 miles of 500-kilovolt (kV), 230-kV, and 345-kV alternating Current (AC) electric transmission lines and associated substation facilities as part of their Energy Vision 2020 plan. The 500-kV/345-kV portion of the project begins in Carbon County 20 miles northeast of the Town of Hanna, heading west passing just north of Hanna. It then continues along the I-80 corridor to the west from Sinclair to Point of Rocks, Wyoming into Sweetwater County and eventually terminates at the existing Jim Bridger Substation near Superior. The 230-kV portion of the project is located entirely in Carbon County and begins approximately 10 miles northwest of Medicine Bow and heads southwest terminating immediately southeast of the town of Hanna. The proposed project crosses 101.8 miles of private land, 74.3 miles of BLM-managed land, and 14.7 miles of State land, and 0.7 miles of water body crossings. Construction is anticipated to commence in Q2 2019 and be completed by Q3 2020. Construction manpower is anticipated to average 325 workers over the duration of the construction period from April 2019 through October 2020 and peak at 511 workers in October 2019.


Pursuant to W.S. 16-3-107, notice was given and the Wyoming Industrial Siting Council conducted a public hearing on the Application for Permit. The hearing began at 8:30 A.M. on October 25, 2018 at the Jeffrey Memorial Community Center at 315 Pine St. Rawlins, Wyoming. The hearing concluded and deliberations of the Industrial Siting Council took place the afternoon of October 25, 2018, at the same location. The Council considered the Applicant’s request pursuant to the provisions of the Industrial Development and Siting Act (W.S. 35-12-101 et seq.), and the Rules and Regulations adopted thereunder, and rendered a decision to grant the permit.
Dated this 30th Day of January, 2019
Industrial Siting Division
Department of Environmental Quality
200 West 17th Street, 4th Floor
Cheyenne, Wyoming 82002
307-777-7369
Kimber.Wichmann@wyo.gov