Underground Injection Control (UIC)

Underground Injection Control in EPA Region 8 (CO, MT, ND, SD, UT, and WY)

EPA Region 8 serves Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming, and 27 tribal nations.

On this page:

Announcements and public notice of proposed actions

EPA Region 8 solicits public comment on issuance of permit-related actions under the authority of the Safe Drinking Water Act and UIC Program regulations for a minimum of 30 calendar days on this website and publishes a courtesy announcement in one or more local newspapers.

All comments received by the end of the comment period will be considered in the formulation of any final decision. Notification and any details of a public comment period extension will be provided at the web links below and will not be published in local newspapers. Interested parties on our email list will be notified of any extension of the public comment period by email.

If you wish to be added to our email list, please notify the EPA staff listed for the proposed action. If no comments are received by the comment deadline, the Director intends to issue a Final UIC Permit, Permit Modification and/or Aquifer Exemption. EPA will hold a public hearing if the response to a specific action indicates significant public interest, or if requested.

For additional information on a specific action, please contact the EPA staff listed for that proposed action.

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Regional guidance documents

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Class V program documents

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Primary enforcement authority

The following links exit the site Exit

Well Class Colorado Montana North Dakota South Dakota Utah Wyoming
Class I EPA EPA North Dakota Department of Health  EPA Utah Department of Environmental Quality, Division of Water Quality Wyoming Department of Environmental Quality 
Class II Colorado Oil and Gas Conservation Commission Montana Board of Oil and Gas Conservation North Dakota Industrial Commission, Department of Mineral Resources, Oil and Gas Division  South Dakota Department of Environment and Natural Resources Utah Division of Oil, Gas and Mining Wyoming Oil and Gas Conservation Commission
Class III EPA EPA North Dakota Department of Health EPA Utah Department of Environmental Quality, Division of Water Quality Wyoming Department of Environmental Quality
Class IV EPA EPA North Dakota Department of Health EPA Utah Department of Environmental Quality, Division of Water Quality Wyoming Department of Environmental Quality
Class V EPA EPA North Dakota Department of Health EPA Utah Department of Environmental Quality, Division of Water Quality Wyoming Department of Environmental Quality
Class VI EPA EPA EPA EPA EPA EPA

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Tribal programs

EPA Region 8 directly implements the UIC Program on 26 Indian Reservations. The Fort Peck Indian Reservation has been delegated primacy for Class II injection wells.

Fort Peck Program Manager Deb Madison (2horses@nemont.net), 406-768-2389

Questions about underground injection wells on Indian Reservations other than Fort Peck should be directed to EPA Region 8.

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Contact information

U.S. EPA Region 8 (8WP-SUI)
1595 Wynkoop Street
Denver, CO 80202-1129

Unit Chief for Permitting Douglas Minter (minter.douglas@epa.gov), 303-312-6079

Permitting Staff Areas of Focus Email Phone
Linda Bowling Aquifer Storage and Recovery (ASR) Contact and Class II Contact for the Wind River Indian Reservation

Linda Bowling (bowling.linda@epa.gov)

303-312-6254
Wendy Cheung Class VI Geologic Sequestration Contact Wendy Cheung (cheung.wendy@epa.gov) 303-312-6242
Jason Deardorff Class II Permitting on Blackfeet, Uintah and Ouray and Fort Berthold Indian Reservations Jason Deardorff (deardorff.jason@epa.gov) 303-312-6583
Ben D'Innocenzo Financial Responsibility Coordinator Ben D'Innocenzo (dinnocenzo.benjamin@epa.gov) 303-312-6342
Valois Shea Class III Well (solution mineral mining) Contact Valois Shea (shea.valois@epa.gov) 303-312-6276
Omar Sierra-Lopez Class V Well Contact and Class II Permitting

Omar Sierra-Lopez                 (sierra-lopez.omar@epa.gov)

303-312-7045
Bruce Suchomel Class II Permitting Lead for Uinta Basin Bruce Suchomel (suchomel.bruce@epa.gov) 303-312-6001
Chuck Tinsley UIC Program Technical and Regulatory Expert Chuck Tinsley (tinsley.chuck@epa.gov)

303-312-6266

 SDWA Enforcement Unit Supervisor Tiffany Cantor (cantor.tiffany@epa.gov), 303-312-6521

Enforcement Staff Areas of Focus Email Phone
Gary Wang Class I, II, III, and Class V Deep Wells (inspections, compliance and enforcement) Gary Wang (wang.gary@epa.gov) 303-312-6469
Britta Copt  Class V Shallow Wells (compliance and enforcement) Britta Copt (copt.britta@epa.gov) 303-312-6229
Nathan Wiser Class I, II, III, and Class V Deep Wells (inspections, compliance, enforcement, tips and complaints) Nathan Wiser (wiser.nathan@epa.gov) 303-312-6211

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