The company says water sampling during well flowback operations showed an "exceedance" on the produced water discharge.

Amid a fierce winter storm, an estimated 250,000 litres of oil spilled into the ocean from Husky Energy's SeaRose platform, about 350 kilometres from St. John's.

The technician was forced to spend the night on the vessel and provide medical care to the injured crew member after the helicopter's hoist became snagged and had to be cut during their original medical evacuation attempt.