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 28 tribal nations.

• Public Notice of Proposed Actions and Announcements
• Regional Guidance Documents
• Resources for Owners and Operators
• Class V Program Information
• Primary Enforcement Authority
• EPA Contact Information

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.

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. 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 or would like additional information on a specific action, please contact the EPA staff listed for the proposed action.

• Draft UIC Class II Produced Fluid Disposal Permits - Middle Fork Energy Uinta, LLC, SWD 33-33-723 and SWD 44-32-723, Uintah and Ouray Indian Reservation, Utah

Announcements

• Reissuance of EPA Dewey-Burdock Class III and Class V Injection Well Final Area Permits in response to Environmental Advisory Board Order (March 2025)
• EPA Dewey-Burdock Class III and Class V Injection Well Final Area Permits and Aquifer Exemptions (November 2020, comment period concluded – informational only)
• MOGO-Jody Field 34-1 & 34-2 Disposal Well, Pondera County, Montana, Permit #’s ​ MT52443-12513 & MT52439-12514 (comment period concluded - informational only)​

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Regional Guidance Documents

Where EPA Region 8 directly implements the Underground Injection Control Program (see Region 8 Agencies Regulating the UIC Program table below), these guidance documents assist the regulated community in complying with program requirements.

• Region 8 Guidance No. 34: Cement Bond Logging and Interpretation (pdf) (331.03 KB)
• Region 8 Guidance No. 36: Completing, operating, monitoring, and testing wells that have tubing cemented in place. (pdf) (141.37 KB)
• Region 8 Guidance No. 37: Demonstration Part II Mechanical Integrity for a Class II Injection Well Permit (pdf) (121.2 KB)
• Region 8 Guidance No. 39: Pressure Testing Wells for Part I (Internal) Mechanical Integrity (pdf) (195.76 KB)
• Region 8 Guidance No. 40: Plugging and Abandonment Requirements for Class II Injection Wells (pdf) (212.97 KB)
• Region 8 Temperature Logging Guidelines (pdf) (35.43 KB)
• Region 8 Radioactive Tracer Survey Guidelines (pdf) (84.66 KB)
• Region 8 Step Rate Testing Guidelines (pdf) (138.63 KB)

Resources for Owners and Operators

• Submitting a UIC Permit Application:
  • Complete the Permit Application for the appropriate well class.
  • The Class II Permit Application Completeness Review Checklist is intended to assist EPA staff’s review of the permit application during the Administrative Review process. This checklist can also serve as a useful guide as you prepare your Class II permit application and can be used for other well class applications.
  • Attachment K lists additional federal laws that EPA must comply. The National Historic Preservation Act and Endangered Species Act requirements will apply to most permits issued by EPA Region 8. If the applicant is willing to initiate and complete the cultural resource and endangered or threatened species surveys, inclusion of these and/or recently conducted surveys can significantly expedite the permitting process.
  • In addition to the permit application, Region 8 also requests that the applicant complete the attached  Permit Applicant Spreadsheet (xlsx) (245 KB) to assist the EPA in technical review of the permit application.
• Transferring Operational Control of UIC Injection Wells (pdf) (111.5 KB)
• Region 8 Mechanical Integrity Test (MIT) (pdf) (40.14 KB)
• 7520 reporting forms for owners or operators (e.g. permit application, monitoring report, well rework, P&A, permit transfer)

Financial Responsibility Documents

• Guidance Documents for Underground Injection Control Financial Responsibilities

Class V Program Information

• Region 8 Class V Inventory Form (pdf) (166.75 KB)
• Fact Sheets for Class V Well Types (information on identification of Class V well types)

• Region 8 Aquifer Recharge and Aquifer Storage Information

Region 8 Agencies Regulating the UIC Program 

The approved regulators for the UIC program in Region 8 are found in the table below. 

In addition to the responsible agencies below, EPA Region 8 directly implements the UIC Program on all Indian Reservations in Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming, with the exception of the Class II program on the Fort Peck Indian Reservation.

EPA Contact Information

Procedures for Submitting Required Reports and Notifications

After receiving authorization to inject, please submit all tests, reports, and notifications under your permit or rule-authorization to the Region 8 UIC mailbox R8UICMailbox@EPA.gov.

For shallow Class V well (e.g. septic systems, dry wells, etc.)

• Please submit all the Class V inventory forms and questions to the Region 8 UIC Mailbox R8UICMailbox@EPA.gov.

UIC Permitting Staff

Section Supervisor

Wendy Cheung (cheung.wendy@epa.gov), 303-312-6242

UIC Enforcement Staff

Section Supervisor

Tiffany Cantor (cantor.tiffany@epa.gov), 303-312-6521
Communications related to testing, monitoring, or other items associated with compliance and enforcement, should follow the “Procedures for Submitting Required Test, Reports, and Notifications” above.

Financial Responsibility Staff

Section Supervisor

Karren Johnson (johnson.karren@epa.gov), 303-312-6159