An unexpected discount in prices from Imperial Oil's Strathcona refinery is the cause.

The Vancouver bunker fuel market moves in sync with the Seattle market.

Owners of vessel have already paid a $300,000 bond, says spokeswoman.

'Unclear roles and responsibilities' and 'technical problems' delayed response.

Team examined more than 100 hydro carbons from the oil.

Plans for vessel upgrading works pushed back by a year.

Specialises in selling bio-free ECA-compliant MGO.

Officials say between 30 to 1,000 litres of fuel spilled into Vancouver's False Creek.

Firm to charge shipping companies a fee to pay for new oil spill cleanup equipment.

Newbuild will 'more than double' firm's current operational capacity at the port.

Marine measures showing benefits for city.

Official sees potential in planned port expansion project.

'It's a bit of a maze', says Vancouver Deputy City Manager.

Officials say quantity, origin and substance of material found is unknown.

'LNG, if spilled, turns into gas and dissipates,' she says.

Bunkering rule change deemed to increase chances of a repeat spill.

Computer projections estimate 50 to 90% of a potential oil spill would reach the local beaches and inlets within three days.

But not from bunker fuel, say authorities.

But likely to surface if court case goes ahead.

Calls efforts 'embarrassing' and disappointing'.