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  2. Underground Injection Control (UIC)

UIC Permit for Prudhoe Bay Grind and Inject Project, North Slope, Alaska

Below is EPA's underground injection control (UIC) permit for the Prudhoe Bay Unit Grind and Inject (PBU-G&I) Project, North Slope, Alaska.

Permit number: AK1I008-B2
Effective dates: September 1, 2017 to August 31, 2027
Modified: July 1, 2020, and May 21, 2026 (see Appendix B of permit)
Current operator: Hilcorp Alaska, LLC


  • UIC Permit, Prudhoe Bay Unit Grind and Inject Project, #AK1I008B2 (pdf) (402.18 KB, Modified May 21, 2026)
    Class I final permit.

Underground Injection Control (UIC)

  • 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
Contact Us About Underground Injection Control
Contact Us About Underground Injection Control to ask a question, provide feedback, or report a problem.
Last updated on May 29, 2026
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