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  2. Underground Injection Control (UIC)

Final Rulemaking for the Navajo Nation Class II Underground Injection Control Program

Contact

Kaylee Ball
ball.kaylee@epa.gov
(415) 972-3944

Return to: UIC Permits in Region 9

EPA has approved an application from the Navajo Nation under Section 1425 of the Safe Drinking Water Act (SDWA) to grant the Tribe primary enforcement responsibility (or "primacy") for the underground injection control (UIC) program for Class II (oil and gas-related) injection wells. The Tribe’s application requested primacy for Class II wells located: within the exterior boundaries of the formal Navajo Reservation, including the three satellite reservations (Alamo, Canoncito and Ramah), but excluding the former Bennett Freeze Area, the Four Corners Power Plant and the Navajo Generating Station; and on Navajo Nation Tribal trust lands and trust allotments outside the exterior boundaries of the formal Navajo Reservation.

EPA's final rulemaking decision is based on a careful and extensive legal and technical review of the Navajo Nation's primacy application, two public comments received, and other relevant information. As a result of the action, the Navajo Nation will administer and enforce its own program for the existing Class II injection wells and any future wells located within the areas described above. EPA will continue to administer its SDWA UIC program for any Class I, III, IV, and V wells on Navajo Indian lands.

Related Documents

Free viewers and readers are available to access documents on our website. If you encounter issues with assistive technology, please contact us.

Below are links to Federal Register notices, a press release and fact sheet that provide more information about this action. The public can access all publicly available documents in the docket (EPA-R09-OW-2007-0248) at Regulations.gov.

  • Final Rule (11/04/2008)
  • Proposed Rule (04/24/2008)
  • Press Release 10/22/2008
  • EPA Fact Sheet: Navajo Nation Class II Underground UIC Primacy (pdf) (71.72 KB, October 2008)
    EPA Fact Sheet concerning approval of the Navajo Nation’s application for primacy under Section 1425 of the Safe Drinking Water Act (SDWA) to grant the Tribe primary enforcement responsibility (“primacy”) for the underground injection control (UIC) program for Class II (oil and gas-related) injection wells.

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 to ask a question, provide feedback, or report a problem.
Last updated on October 1, 2024
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