1. (1) An operator of a Class VI well must perform corrective action on each well in the area of review that is determined to need corrective action, using methods designed to prevent the movement of fluid into or between USDWs, including use of materials compatible with the carbon dioxide stream, where appropriate.

2. (2) At the minimum fixed frequency, not to exceed five years, as specified in the area of review and corrective action plan, or when monitoring and operational conditions warrant, an operator must:

   1. (a) Reevaluate the area of review in the same manner specified in Subsection R644-8-2(3)(a);
   2. (b) Identify each well in the reevaluated area of review that requires corrective action in the same manner specified in Subsection R644-8-2(3);
   3. (c) Perform corrective action on each well requiring corrective action in the reevaluated area of review in the same manner specified in this section; and
   4. (d) Submit an amended area of review and corrective action plan or demonstrate to the division through monitoring data and modeling results that no amendment to the area of review and corrective action plan is needed. Any amendment to the area of review and corrective action plan must be approved by the division, must be incorporated into the permit, and is subject to the permit modification requirements listed in Rule R644-7, as appropriate.
3. (3) The emergency and remedial response plan, required by Rule R644-12, and the demonstration of financial responsibility, as described Section R644-5-3, must account for the area of review delineated as specified in Subsection R644-8-2(3) or the most recently evaluated area of review delineated under Subsection R644-8-2(2)(b)(i), regardless of whether or not corrective action in the area of review is phased.
4. (4) All modeling inputs and data used to support the area of review reevaluations under Subsections R644-8-2(2)(b)(i) and R644-8-3(2) shall be retained for at least 10 years.

KEY: oil and gas law

Date of Last Change: July 31, 2025

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