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.

• 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 ofER 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 nonendangerment 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 describes the recommended approaches for attaining primary enforcement responsibility (primacy) for the Underground Injection Control (UIC) Class VI Program and provides direction to UIC Program Directors in implementing the Federal Requirements of the UIC Class VI Rule.
• 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 details recommended methods to collect information and demonstrate sufficient suitability of the proposed injection site for proper site characterization to meet the requirements of the Class VI Rule.
• 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)(74 pp, 3 MB, March 2011, 816-D-10-007 )
  CLOSED FOR PUBLIC COMMENT - This document details how to use the site characterization information and computational modeling to delineate the area of review as well as approaches for evaluating and remediation potential carbon dioxide leakage through an appropriate corrective action plan that meets the requirements for the Class VI Rule.
• 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, 724 K, March 2011, 816-D-10-012 )
  CLOSED FOR PUBLIC COMMENT - This document describes the required elements of each of the five plans (Area of Review and Corrective Action Plan, Testing and Monitoring Plan, Injection Well Plugging Plan, Post-Injection Site Care (PISC) and Site Closure Plan, and Emergency and Remedial Response Plan) prospective Class VI injection well owners and operators must submit with a permit application under the Class VI Rule requirements.
• Geologic Sequestration of Carbon Dioxide Draft Underground Injection Control (UIC) Program Class VI Well Recordkeeping, Reporting, and Data Management Guidance for Permitting Authorities (PDF)(171 pp, 2 MB, March 2013, 816 P-13-002)
  CLOSED FOR PUBLIC COMMENT - The purpose of this guidance is to provide a description of reporting and record keeping recommendations for permitting authority responsibilities for each phase of a GS operation; Information on how the reporting, recordkeeping, and data management activities will ensure USDW protection; and a description of EPA’s central data system used for the purpose of reporting, recordkeeping, and data management by permitting authorities.