Suncor Energy Inc.

Suncor Energy Inc.

July 27, 2006 00:00 ET

Suncor responds to acid vapour leak at Sarnia Refinery

Sarnia, Ontario (July 27, 2006) — Suncor Energy Products Inc. reported a leak of acid vapour at the company's Sarnia, Ontario refinery. The incident occurred at approximately 9:30 a.m. ET while routine maintenance was being undertaken on an alkylation unit.

Suncor emergency crews responded immediately to evacuate personnel from the affected area. The leak was contained and there was no offsite impact or risk to the surrounding community.

Several contractors are under observation for possible exposure to acid vapour. Affected workers received treatment at on-site facilities at the refinery and have been taken to local hospitals for observation.

"Whenever there is potential for hydrofluoric acid exposure, we take abundant precautions," said Ian Savill, vice president of Suncor's Sarnia Refinery. "We're working with local health authorities to ensure all affected individuals get the required care, advice and attention they need."

The cause of the accident will be investigated. The alkylation unit stabilizes raw gasoline stock and converts some components to high octane blending stock. The unit uses hydrofluoric acid as a catalyst in this process.

Suncor Energy Products Inc. is a wholly-owned subsidiary of Suncor Energy Inc., an integrated energy company. In addition to a refinery in Sarnia, Suncor Energy Products has a network of more than 300 Sunoco-branded retail and Fleet Fuel cardlock sites and has a 50 per cent joint venture interest in more than 200 Pioneer and UPI retail sites. Suncor Energy Products Inc. manufactures, distributes and markets transportation fuels, heating oils and petrochemicals primarily in Ontario.

-30-


For further information, contact:
Jason Vaillant
Suncor Energy Products - Sarnia
(519) 383-3691