OTTAWA — Chevron Canada warned regulators five years ago it would be unable to clean up the vast majority of any big oil spill at a rig off the coast of Newfoundland that is poised to set a record for the deepest offshore oil well drilled in Canada.
...
The unprecedented nature of the Lona O-55 project has raised concerns among environmentalists and industry observers about how Chevron would respond were the well to blow out, as it did in the Deepwater Horizon case.
...
However, the report also concedes that, were a large spill to occur on the rough seas off Newfoundland, the company would be hard pressed to clean it up, even if response teams were outfitted with state-of-the-art equipment.
...
The Chevron report estimates that only two to 12 per cent of an offshore spill could be retrieved under "typical wind and wave conditions."
...
http://www.montrealgazette.com/news/Chevron+warned+couldn+clean+Canadian+coastal+spill/3048813/story.html