One employee was left with minor injuries after a heavy oil hydrocarbon leak inside a processing unit at Shell Scotford on November 15.
All non essential workers were evacuated just after 12:00 p.m. and all staff were accounted for. An all-clear was given by 6:30 p.m. that same day.
In a statement, Shell said they notified neighbouring businesses, but no action was required.
Shell Canada and Strathcona County emergency services were called to the scene and the Alberta Energy Regulator has been contacted.
Shell will be launching an internal investigation on what caused the leak, but workers were able to return to work Thursday, Nov. 16 with the facility running normally.