Public Notice Review of Request to Amend Power Company of Wyoming’s Permit DEQ/ISC 12-07

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Wyoming Department of Environmental Quality

Public Notice: Review of Request to Amend Power Company of Wyoming’s Permit DEQ/ISC 12-07

Notice is hereby given that the Industrial Siting Division received an amendment request on May 26, 2022, from Power Company of Wyoming (Permittee) regarding a modification to this permit related to the Choke Cherry Sierra Madre Project construction schedule as follows:

  1. The Permittee is requesting an extension from 11 years to 13 years for the project construction schedule. 
  2. The Permittee estimates a decrease in peak construction workforce from 850 to 831 in 2026.
  3. The maximum non-local peak manpower will increase from 715 to 746, in 2026.
  4. The cumulative total peak workforce in August of 2024 is expected to be 1,428 workers. This is a reduction from the previous project in 2019 for a peak workforce of 4,500 cumulative workers in August 2020.

Pursuant to Conditions #11 and #12 of their permit, the Administrator is providing public notice of the requested amendment to permit DEQ/ISC 12-07.  The Division will accept public comment until 5:00 PM on June 24, 2022.  The Director may authorize proposed changes so long as no party or Council Member requests that the matter be heard before the Council. It is the Director’s intention to authorize the change on or after June 29, 2022, if the Division does not hear from the parties or the Council members. The public may review a copy of the proposed amendment at the office of the Industrial Siting Division in Cheyenne, WY or online at:

Para español, visite Americans with Disabilities Act: special assistance or alternative formats will be made available upon request for individuals with disabilities. Please provide at least five (5) days before the close of the public comment period for such requests.

Persons may also request a copy of the proposed amendment by contacting David Koskelowski at

Dated this 9th day of June 2022

Industrial Siting Division

Department of Environmental Quality

217 W. 17th St., 4th Floor

Cheyenne, WY 82002