An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Title V Operating Permit: WBI Energy Transmission, Inc. - Hardin Compressor Station

This page contains the Title V Operating Permit (2nd renewal), Response to Public Comments and the Administrative Permit Record, for the WBI Energy Transmission, Inc., Hardin Compressor Station, located on the Crow Indian Reservation in Big Horn County, MT, Permit Number: V-C-000001-2013.00. The permit was issued on August 31, 2017, under the authority of the Title V Operating Permit Program at 40 CFR Part 71, with an effective date of September 30, 2017.

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