The draft Class VI guidance documents shown on this page are prepared to assist:

• UIC directors in implementing Class VI programs
• Class VI well owners or operators in complying with the Class VI regulations

The draft Class VI guidance documents linked below are no longer open for public comment.

Review Final Class VI guidance documents.

• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Guidance on Transitioning Class II Wells to Class VI Wells (PDF)(93 pp, 1 MB, December 2013, 816-P-13-004)
  CLOSED FOR PUBLIC COMMENT - This guidance also provides information regarding Class VI regulations that may be of interest to owners or operators of Class II wells and Class II UIC Program Directors.
• Key Principles in EPA's Underground Injection Control Program Class VI Rule Related to Transition of Class II Enhanced Oil or Gas Recovery Wells to Class VI (PDF)(2 pp, 317 K, April 23, 2015)
  CLOSED FOR PUBLIC COMMENT - This Memorandum from the Director of the Office of Ground Water and Drinking Water to the EPA Regional Water Division Directors identifies key principles related to the transition of ER wells that store C02 from Class II operations to the Class Vl program.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Guidance on Class VI Well Plugging, Post-Injection Site Care, and Site Closure (PDF)(87 pp, 2 MB, April 2013, 816-P-13-005)
  CLOSED FOR PUBLIC COMMENT - This guidance document includes considerations and recommendations to help owners or operators petition for an alternate PISC timeframe (i.e., other than the 50-year default) during permitting; revise the PISC timeframe during the injection operation; and make a non-endangerment demonstration for revision to the PISC and Site Closure Plan.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Testing and Monitoring Guidance (PDF)(122 pp, 2 MB, January 2012, 816-D-10-009)
  CLOSED FOR PUBLIC COMMENT - This guidance is organized to cover the testing and monitoring activities that will occur during the injection phase.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Primacy Application and Implementation Manual for State Directors (PDF)(276 pp, 2 MB, June 2011, 816-D-11-001)
  CLOSED FOR PUBLIC COMMENT. This manual is intended to be used in conjunction with a series of technical guidance documents that EPA is developing to support owners and operators of Class VI injection wells and the UIC Program permitting authorities.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Site Characterization Guidance for Owners and Operators (PDF)(170 pp, 5 MB, March 2011, 816-D-10-006)
  CLOSED FOR PUBLIC COMMENT - This document is part of a series of technical guidance documents to support owners or operators of Class VI wells and the UIC Program permitting authorities.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Area of Review Evaluation and Corrective Action Guidance for Owners and Operators (PDF)(87 pp, 3 MB, March 2011, 816-D-10-007)
  CLOSED FOR PUBLIC COMMENT - This guidance provides information regarding modeling requirements and recommendations for delineating the AoR, describes the circumstances under which the AoR is to be reevaluated, and describes how to perform an AoR reevaluation.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Project Plan Development Guidance for Owners and Operators (PDF)(100 pp, 737 K, March 2011, 816-D-10-012)
  CLOSED FOR PUBLIC COMMENT - This guidance describes, for Class VI injection well owners and operators, the required elements of each plan and the site-specific elements of each GS project that they might consider in developing the plan.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Recordkeeping, Reporting, and Data Management Guidance for Owners and Operators (PDF)(171 pp, 4 MB, March 2013, 816-P-13-001)
  CLOSED FOR PUBLIC COMMENT - This guidance is intended to describe specific information that owners or operators of Class VI wells are required or recommended to submit during each GS activity under the Class VI Rule.