The Alberta Energy Regulator appears set to release its report on its probe into a high-profile oil leak nearly three years ago.
During the spring of 2013, a bitumen-water mixture was found oozing to the surface at Canadian Natural Resources' (TSX: CNQ) Primrose oilsands site in eastern Alberta.
More than a million litres of the fluid was recovered from four locations.
Canadian Natural Resources had been using an extraction method at Primrose known as high-pressure steam stimulation, the safety of which has been questioned by environmental groups.
In September 2014, the regulator allowed the company to resume operations at part of Primrose using a different technique called low-pressure steam flooding.
Another review pointed to the problems at Primrose involving faulty old wellbores at the site and the extraction method the company used.
CNQ shares opened Monday up 38 cents, or 1.1%, to $36.15, within a 52-week trading range of $21.27 to $42.46
