The AER said Obsidian became aware of the spill at noon on May 29, and notified the AER at approximately 2:30 p.m. that 80 cubic metres of produced water had spilled — but that it hadn't entered ...

The study follows a 2015 report by the U.S. National Academy of Science that showed dilbit tended to quickly sink after being spilled in fresh water, requiring the use of dredgers or divers with ...