ATCO Banff Transmission Line Repair Project

ATCO is planning to remove and replace approximately 120m of the existing 219mm high pressure natural gas Banff Transmission line. Defects within the Banff Transmission line were identified during an in-line inspection and will be removed and replaced to ensure the safe service of the Banff Transmission line. A portion of this proposed line replacement will occur on the western edge of Stoney Indian Reserves #142, #143, #144. The proposed project will have impacts on one wetland area.

Latest update

April 30, 2024 – Indigenous Services Canada issued its Notice of Determination ( and determined that the project is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination for the ATCO Banff Transmission Line Repair Project - April 30, 2024
1 ATCO Banff Transmission Line Repair Project - Public Comments Invited - March 22, 2024


Indigenous Services Canada
Alexandra Johnson, Environment Officer
9911 Chiila Boulevard
Tsuut'ina Nation, Alberta T3T 0E1
Telephone: 587-335-9693

  • Location

    • Stoney Nakoda Lands (Alberta)
  • Nature of Activity

    • Oil and Gas
  • Assessment Status

    In progress
  • Start Date

  • Proponent

  • Authorities

    • Indigenous Services Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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