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Underground Injection Control (UIC)
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Supporting Documents for the Final Rule for UIC Class VI Wells

Federal register notices were posted to announce the final Class VI rule for the long-term subsurface storage of carbon dioxide (CO2), and the effective date of implementation.

The Agency also prepared a fact sheet for the Class VI to provide a quick Overview to explain:

  • Program requirements
  • Why the rule was needed
  • Who is affected by the rule
  • Announcement of Federal Underground Injection Control (UIC) Class VI Program for Carbon Dioxide (CO2) Geologic Sequestration (GS) Wells (pdf) (September 15, 2011)
    EPA is announcing the establishment of a Federal Underground Injection Control (UIC) Class VI Program for Carbon Dioxide (CO2) Geologic Sequestration (GS) Wells under which EPA will directly implement the Class VI program nationally as of September 7, 2011.
  • Underground Injection Control (UIC) Program Requirements for Geologic Sequestration of Carbon Dioxide Final Rule (pdf)
    Fact Sheet on the UIC Program Requirements for Class IV Wells
  • Underground Injection Control Home
  • Class I Industrial and Municipal Waste Disposal Wells
  • Class II Oil and Gas Related Injection Wells
  • Class III Injection Wells for Solution Mining
  • Class IV Shallow Hazardous and Radioactive Injection Wells
  • Class V Wells for Injection of Non-Hazardous Fluids into or Above Underground Sources of Drinking Water
  • Class VI Wells Used for Geologic Sequestration of CO2
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Last updated on February 23, 2022