AER Bulletin 2019-32 – IL 94-04 Rescinded

As a result of our continual review of requirements and processes, we rescinded Informational Letter 94-04: Storage of Hydrocarbons in Underground Formations.
IL 94-04 was released on April 7, 1994, and discusses the adoption of the Canadian Standards Association (CSA) standard CSA Z341-93: Storage of Hydrocarbons in Underground Formations. IL 94-04 has now been rescinded, for the following reasons:
• CSA Z341-93 has been replaced by newer versions.
• Hydrocarbon cavern storage approvals have typically been conditioned on compliance with current CSA standards.
If you have any questions or comments about this bulletin or current application procedures, contact the Customer Contact Centre by telephone at 1-855-297-8311 or by email at Inquiries@aer.ca.