Public Notices: Sage Butte PRB Operating, LLC (F027501/A0018898)

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Electronic copies of all public notices, permit application analyses, and permit applications are now available through the IMPACT Public-Facing Website OpenAir. For more information on OpenAir, please visit our website here.

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The Division of Air Quality, proposes to approve the following requests:

Sage Butte PRB Operating, LLC (F027501, P0040726):

CHAPTER 6, SECTION 2 CONSTRUCTION/MODIFICATION PERMIT - Department of Environmental Quality, Division of Air Quality PUBLIC NOTICE: In accordance with Chapter 6, Section 2(m) of the Wyoming Air Quality Standards and Regulations, notice is hereby given that the State of Wyoming, Department of Environmental Quality, Division of Air Quality, proposes to approve a request by Sage Butte PRB Operating, LLC (CMP100827) to modify and operate the Juniper 09W21-1NH well site by converting it to a central facility, known as the Juniper 09W21 PAD (F027501), with the addition of production and equipment associated with one new well, the Juniper 09W21-5NH, with one common smokeless flare to control volatile organic compound and hazardous air pollutant emissions associated with the oil tanks, active produced water tanks and pneumatic pump, located in the SE1/4SW1/4 of Section 9, T38N, R75W, approximately twenty-eight (28) miles north of Glenrock, in Converse County, Wyoming.

For the duration of the public comment period, the permit application, the agency's analysis, and the public notice are available for public inspection online at https://openair.wyo.gov, utilizing facility ID F027501 and permit number P0040726 under permits. This material may also be viewed online, at the above URL, utilizing a public computer at the Converse County Library, Douglas, Wyoming. Additionally, for the duration of the public comment period a copy of this public notice is available for public inspection at the Converse County Clerk's Office, Douglas, Wyoming.

Written comments may be directed to Amber Potts, Administrator, Division of Air Quality, Department of Environmental Quality, 200 West 17th St., Cheyenne, Wyoming 82002 or by fax (307) 635-1784. Please reference A0018898 in your comment. Comments may also be submitted electronically through the Division's website (http://aq.wyomingdeq.commentinput.com). Comments submitted by email will not be included in the administrative record. All comments received by 5:00 p.m., Friday, April 10, 2026 will be considered in the final determination on this application. A public hearing will be conducted only if in the opinion of the administrator sufficient interest is generated or if an aggrieved party so requests. Para español, visite deq.wyoming.gov. Americans with Disabilities Act: special assistance or alternative formats will be made available upon request for individuals with disabilities. Please provide at least fourteen (14) days before the close of the public comment period for such requests.

Please note that the Wyoming Department of Environmental Quality Cheyenne Office has moved.
The new address is:

200 West 17th Street
Cheyenne, WY 82002