Suncor Ramps Up Production in May

Suncor reported that the company's oil sands production during May averaged approximately 304,000 barrels per day (bpd). Planned maintenance on one of the company's two upgraders began on May 17 and is proceeding as planned. Year-to-date oil sands production at the end of May averaged approximately 250,000 bpd. Suncor is targeting average oil sands production of 280,000 bpd (+/- 5%) in 2010.

Production numbers include upgraded sweet and sour synthetic crude oil and diesel, as well as non-upgraded bitumen sold directly to the market, from all Suncor-operated facilities. Reported volumes do not include Suncor's proportionate production share from the Syncrude joint venture.

On a monthly basis, Suncor reports production numbers from its oil sands operation in order to provide stakeholders with a more timely review of operational performance. These numbers are preliminary and subject to adjustment. Monthly totals may differ from the year-to-date total due to rounding, the impact of sales and changes in inventory. Production volumes will be confirmed when Suncor's second quarter results are released.