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Press Release

Public Notice: Notice of Proposed Underground Injection Control Permit Geologic Sequestration Site

Published by Todd Bush on June 11, 2024

The Underground Injection Control (UIC) Program regulates the storage of carbon dioxide in underground geologic reservoirs within the state. Operators of such facilities are required to receive coverage under a UIC permit. The purpose of this notification is to inform the public that the UIC Program is proposing the issuance of one (1) permit (Permit # 2022-235 (WYS-021-00149)) for Tallgrass High Plains Carbon Storage LLC, 4200 West 115th Street, Leawood, KS 66211.

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The draft permit is for a Class VI UIC well at a geologic sequestration site that will be located in Laramie County (NW NW Qrt of Section 36, Township 13 North, Range 62 West). The draft permit for the UIC Class VI injection well proposes to inject carbon dioxide, for the purpose of storage, into the Lyons Sandstone at a depth of 9,128 to 9,194 feet below ground surface. The expected quantity of carbon dioxide for storage is approximately seven (7) million metric tons.

The UIC Program has determined the permittee has satisfied all requirements of Wyoming Water Quality Rules Chapter 24 and Wyoming Statutes 35-11-313 through 35-11-320, contingent on receipt of a unitization order from the Wyoming Oil and Gas Conservation Commission.

The public comment period begins June 8, 2024, and ends August 7, 2024. Electronic copies of the proposed permit and relevant application materials are available for review at (under “WATER-Class VI Wells Carbon Capture”). Hardcopies are available to view at the following locations:

WDEQ Office - Cheyenne200 West 17th Street2nd FloorCheyenne, WY 82002

WDEQ Office - Casper444 West Collins Dr.Suite 1400Casper, WY 82601

WDEQ Office - Lander510 Meadowview Dr.Lander, WY 82520

WDEQ Office - Sheridan2100 West 5th St.Sheridan, WY 82801

Wyoming State Library2800 Central Ave.Cheyenne, WY 82001

Laramie County Library2000 Pioneer AvenueCheyenne, WY 82001

During the 60-day public comment period, any interested person may submit written comments on the proposed permit and may request a public hearing be held. Electronic comments may only be submitted through and accepted by the WDEQ comment portal provided at

The UIC Class VI Program will hold a hearing following the public comment period and will issue a future notice with the location and date of the hearing.

All written comments and requests received prior to 5:00 P.M, August 7, 2024, in the Cheyenne office will be considered. Electronic comments may be submitted via the link identified above. Comments submitted by email will not be considered. Written comments may be directed to Ms. Lily Barkau, P.G., Groundwater Section Manager, Wyoming Department of Environmental Quality, Water Quality Division, 200 West 17th Street, 2nd Floor, Cheyenne, Wyoming 82002 or by fax at (307) 635-1784.

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 fourteen (14) days before the close of the public comment period for such requests.

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