Public Notices: ONEOK Rockies Midstream, LLC (F032165/A0017818)

Wyoming Department of Environmental Quality | view as a webpage

Public Notices: July 12, 2025

*****************************************************************************************************************************************

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.

****************************************************************************************************************************************

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

ONEOK Rockies Midstream, LLC (F032165, P0039933):

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 ONEOK Rockies Midstream, LLC to construct the Cutter Gas Plant, located in the SW¼ NE¼ of Section 4, T42N, R73W, approximately eight (8) miles east-northeast of Pine Tree Junction, in Campbell County, Wyoming, with the installation of the following equipment and sources of emissions: - One (1) amine unit (AMN001) controlled with a thermal oxidizer (INC001) - Miscellaneous venting and blowdowns to atmosphere (BVC001) - Four (4) 2,500 hp Caterpillar G3608 compressor engines (ENG001-ENG004) - One (1) 1,467 hp Caterpillar G3512 emergency generator engine (ENG005) - One (1) plant flare to control emissions from venting and maintenance events (FLR001) - One (1) enclosed combustor to control condensate truck loading (FLR003) - One (1) enclosed combustor to control NGL and condensate truck loading (FLR004) - Tank blanket gas emissions (FLR005) - Emissions from fugitive equipment leaks (FUG001) - One (1) 15.5 MMBtu/hr amine hot oil heater (HET001) - One (1) 7.0 MMBtu/hr regenerative gas heater (HET002) - One (1) 14.3 MMBtu/hr stabilizer hot oil heater (HET003) - Pressurized condensate truck loading fugitives (LUD001) - Pressurized NGL truck loading fugitives (LUD002) - One (1) 1,429 bbl pressurized stabilized condensate tank (TNK001) - Three (3) 3,500 bbl pressurized stabilized NGL tanks (TNK002-TNK004) - Two (2) 300 bbl slop oil (aqueous) tanks (TNK005-TNK006)
- One (1) 100 bbl slop oil (hydrocarbon) tank (TNK007) - One (1) 50 bbl methanol tank (TNK008).

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 F032165 and permit number P0039933 under permits. This material may also be viewed online, at the above URL, utilizing a public computer at the Campbell County Library, Gillette, Wyoming. Additionally, for the duration of the public comment period a copy of this public notice is available for public inspection at the Campbell County Clerk's Office, Gillette, Wyoming. In accordance with the Americans with Disabilities Act, special assistance or alternate formats will be made available upon request for individuals with disabilities.

Written comments may be directed to Nancy Vehr, Administrator, Division of Air Quality, Department of Environmental Quality, 200 West 17th St., Cheyenne, Wyoming 82002 or by fax (307) 635-1784. Please reference A0017818 in your comment. Comments may also be submitted electronically through the Division's website (https://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., Monday, August 11, 2025 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.

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

200 West 17th Street
Cheyenne, WY 82002

View in Español

Learn more about the Air Quality Division