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National Information

 

Regional Information

Underground Injection Control

In a cooperative effort between the Environmental Protection Agency (EPA), state and tribal governments, the UIC Program works toward protecting underground sources of drinking water (USDW) from contamination by regulating the construction and operation of injection wells. Underground injection wells are primarily used to dispose of wastes into the subsurface and have the potential to adversely affect USDWs. Five classes of wells are defined according to the type of waste that is disposed and where the waste is injected. Detailed information on regulations can be found at EPA Regulations.

Region 8 States selector map Montana Contacts North Dakoka Contacts South Dakota Contacts Utah Contacts Wyoming Contacts Colorado Contacts

A brief description of the well types:

Class I: Industrial and Municipal Wells That Inject Beneath Lowermost USDW
Class II: Associated with Oil and Gas Production
Class III: Associated With Mineral Recovery
Class IV: Wells Injecting Hazardous Waste Into USDWs (Prohibited)
Class V: Injection Wells Not Included in Other Classes (typically Shallow Disposal Systems)

 

 

News and Announcements

You will need the free Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Powertech (USA) Inc.'s Dewey Burdock UIC Class III Permit Application

Dewey Burdock Application (PDF 12.7 MB)
Appendices:
Appendix A (PDF 1.62 MB)
Appendix B (PDF 311 KB)
Appendix C (PDF 1.46 MB)
Appendix D (PDF 18.5 MB)
Appendix E (PDF 439 KB)
Appendix F (PDF 4.43 MB)
Appendix G (PDF 399 KB)
Plates:
Plate 3.1 Area of Review (PDF 2.3 MB)
Plate 6.1 Generalized Cross-section (PDF 2.6 MB)
Plate 6.2 Overlying Aquitard Isopach (PDF 428 KB)
Plate 6.3 Fall River Isopach (PDF 1.0 MB)
Plate 6.4 Chilson Member of Lakota Isopach (PDF 1.1 MB)
Plate 6.5 Isopach of Fuson Member (PDF 387 KB)
Plate 6.6 Isopach of the Underlying Unit Morrison Shale (PDF 935 KB)
Plate 6.7 Typical Log (PDF 644 KB)
Plate 6.8 Dewey Burdock Cross Section Index 12-3-2008 (PDF 887 KB)
Plate 6.9 Cross-section A-A' (PDF 267 KB)
Plate 6.10 Cross-section F-F' (PDF 230 KB)
Plate 6.11 Cross-section H-H' (PDF 368 KB)
Plate 6.12 Cross-section J-J' (PDF 274 KB)
Plate 6.13 Fall River Structure (PDF 453 KB)
Plate 6.14 Chilson member of the Lakota Structure (PDF 464 KB)
Plate 6.15 Structure Map - Top of Unkpapa 11-14-08 (PDF 403 KB)
Plate 7.1 General Wellfield Layout (PDF 497 KB)
Plate 7.2 Typical Header House (PDF 762 KB)
Plate 7.3 Manifolds and Piping Details (PDF 353 KB)
Plate 17.1 TVA (PDF 5.5 MB)

EPA Announces Approval of the Fort Peck Tribes' UIC Class II Injection Well Program in Montana

On October 17, 2008, EPA Administrator Stephen Johnson authorized the Assiniboine and Sioux ( Fort Peck) Tribes to implement their own UIC Class II injection well program on the Fort Peck Indian Reservation. The Fort Peck Tribes are the first tribal government in the nation to receive UIC program authorization under the Safe Drinking Water Act.  This authorization will become effective on November 26, 2008, thereby allowing the Tribes to begin enforcing their own UIC regulations covering all Class II injection wells operating within the exterior boundaries of the Reservation. The Federal Register notice PDF and Fact Sheet PDF below summarize EPA's decision, provide instructions on how to access EPA’s documentation supporting this decision, and how to access all public comments received in response to EPA’s proposal to approve the Tribes’ UIC Class II program published in the Federal Register on January 30, 2008. You may also click here to go directly to the Federal Register notice and supporting documentation. This documentation is in general chronological order, with the most recent supporting documents at the bottom of the list. For further information please contact Douglas Minter at minter.douglas@epa.gov or by calling 1-800-227-8917 extension 312-6079 within EPA Region 8 or 303-312-6079 outside EPA Region 8.

Federal Register notice (PDF 10 pp, 95.8K)
Fact Sheet (PDF 2 pp, 32K)


Proposed Regulations on Geological Sequestration of Carbon Dioxide

EPA is seeking public comment until November 24, 2008 on its proposed regulations for the injection and storage of carbon dioxide into the subsurface. Written comments can be submitted through the www.regulations.gov website by selecting the yellow icon under "Add Comments" located next to the "PROPOSED RULES". Here you will also find additional supporting documentation for the proposed regulations. Additional information on the Background and the Regulatory Development can be found on the EPA headquarters website. For further information please contact Dan Jackson (jackson.dan@epa.gov, 303-312-6155) or Wendy Cheung (cheung.wendy@epa.gov, 303-312-6242).


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