An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Underground Injection Control (UIC)

Public Notice: Proposed UIC Permit for Colville River Unit, North Slope, Alaska

Publish Date: 11/29/2018

Summary

The EPA is proposing to reissue an Underground Injection Control (UIC) permit which authorizes the operation of up to three Class I non-hazardous industrial waste injection wells at the Colville River Unit, North Slope, Alaska.

The EPA has direct implementation responsibility in Alaska for the regulation of Class I injection wells through the UIC  program, authorized by Part C of the Safe Drinking Water Act. Class I injection wells dispose of fluids beneath any aquifers which could serve as current or future underground sources of drinking water (USDWs).

Wastes allowed for injection include: treated domestic wastewater, drilling muds and cuttings, well workover fluids, melt and storm water, facility water, production water and other exempt and non-exempt non-hazardous fluids.

The EPA has authorized ConocoPhillips Alaska, Inc. to construct and operate Class I non-hazardous injection wells at the Colville River Unit on Alaska’s North Slope through Permit AK-1I003-A (issued February 2, 1999), and Permit AK-1I003-B (issued February 2, 2009).

The EPA proposes to reissue this permit for another 10 years after the current permit expires on February 2, 2019.

Injection is permitted only into the Sag River and Ivishak formations below an impervious confining zone at greater than 8500 feet true vertical depth. The EPA has previously determined that the aquifers affected by this injection do not qualify as USDWs due to their high natural salinity.

Tentative Determination

The EPA has tentatively determined to reissue a 10-year UIC permit to the applicant.

Administrative Record

Electronic copies of the draft permit and fact sheet are available under "Related Documents" below.

Copies of documents, including the permit application, are also available upon request to Ryan Gross (gross.ryan@epa.gov), 206-553-6293

Applicant or Respondent

ConocoPhillips Alaska, Inc.
P.O. Box 100360
Anchorage, AK 99510

Permit #: AK1I003-C


Related Documents

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.