Production numbers at the Syncrude oil sands mine North of Fort McMurray will come in just below expectations.
Canadian Oil Sands Ltd. expects full year production of 94 million barrels down from the projected 95 million to 100 million barrels for 2014.
An outage in a sour water treater is to blame for the decrease in production.
Repairs are expected to be completed by the end of this month.
