1. (1) Applicability. Title R644 applies to any owner or operator of a proposed or existing CO2 Sequestration facility and associated Class VI wells in Utah. Title R644 does not apply to applications filed with the division proposing to use carbon dioxide for an enhanced oil or gas recovery project, rather such applications will be processed under Rule R649-5.
2. (2) The division, under the direction of the board, shall administer Title 40, Chapter 11, Geologic Carbon Storage and Title R644 promulgated thereunder for geologic sequestration of carbon dioxide.
3. (3) Title R644 only applies to geologic sequestration of carbon dioxide in underground reservoirs as defined in Section R644-1-1. The geologic sequestration of carbon dioxide is not permitted in solution-mined salt caverns under these provisions.
4. (4) Title R644 does not apply to Class I, Class III, or Class V wells. Conversion of these wells to a Class VI well is prohibited. The construction, operation or maintenance of any Class V geologic sequestration well for carbon dioxide injection is prohibited.
5. (5) An operator of an existing Class II well must obtain a CO2 Sequestration facility permit, and a permit for a Class VI well associated with the CO2 Sequestration facility, prior to injecting carbon dioxide for the primary purpose of long-term storage into a reservoir and must demonstrate that the well is constructed to the division's satisfaction and meets the standards set forth in Rule R644-9. Upon approval of a CO2 Sequestration facility permit and the associated Class VI well permit, an operator's Class II permit will expire.

KEY: oil and gas law

Date of Last Change: July 31, 2025

Authorizing, and Implemented or Interpreted Law: 40-11-3