Report Management

This report has been prepared based on the G3 Sustainability Reporting Guidelines of the Global Reporting Initiative (GRI). It represents a balanced and reasonable presentation of our company's social, environmental and economic performance.

Rick George
president and chief executive officer

Boundary Conditions

Suncor measures progress by monitoring selected performance indicators. These indicators provide insight on the environmental, economic and social impacts and benefits of Suncor's business and are used to continuously improve performance.

Our 2011 Report on Sustainability includes social and environmental data from the 2010 reporting year and marks the first year to year comparison since the company merged with Petro-Canada in 2009. Economic performance indicators that align with Suncor’s 2010 annual report are reported in a consistent manner.

In the Performance Measures section, consolidated Suncor-wide performance indicators are provided as well as indicators for each operating business unit as per the 2010 organizational structure. The business unit structure change in 2011 will be reflected accordingly in Suncor’s next report on Sustainability. Specific details regarding the business unit structure and explanations on re-statements or changes to historical data is included in the introductory statements in each performance measure section. The 2011 reporting structure is based on Suncor’s 2010 organizational layout and includes operated assets only. These include:

• Suncor Wide (roll up of all data where relevant and applicable)
• Oil Sands (includes the oil sands mining and upgrading facility but does not include Syncrude)
• In Situ (includes Firebag and MacKay River)
• Natural Gas
• Refining and Marketing (facilities include the Montreal, Edmonton, Commerce City and Sarnia Refineries as well as the Mississauga Lubricants plant)
• St. Clair Ethanol Plant
• International and Offshore (includes our east coast operated platform)
• Major Projects

Suncor is part of several joint ventures in our Refining and Marketing business unit, including the Sun-Canadian Pipeline Company Limited, UPI Energy LP, Pioneer Petroleum, TransNorthern Pipeline, Portland-Montreal Pipeline, APPL, Sun Petrochemicals, ParaChem, and with numerous terminal sites. As Suncor has control and significant impact over the Sun-Canadian Pipeline Company Limited, all performance indicators for this entity are included in the Refining and Marketing section of this report.

Suncor holds a 51% interest in ParaChem Chemicals L.P. (ParaChem), which owns and operates a petrochemicals plant located adjacent to the Montreal refinery. Suncor does not exercise control or significant influence over this wholly independent operation, despite the majority ownership position. This investment is not deemed to pose a significant risk to Suncor’s sustainability performance, and thus is also not included in the performance indicators.

Suncor is also a part of several joint ventures in our International and Offshore business unit in Syria, Libya, the east coast of Newfoundland and the North Sea. These include the; White Rose, Hibernia, Terra Nova and Buzzard offshore projects as well as facilities in Syria and Libya. Libyan operations are currently on hold. As Suncor is the operator and has significant impact over the Terra Nova platform, off the east coast of Newfoundland,all environmental performance measures are included in the International and Offshore section of this report.

Suncor does not have control over the other joint ventures, however can be considered to have significant influence due to board voting rights. However, these joint ventures are not deemed to pose significant risk to Suncor's sustainability performance, and thus are not included in the performance indicators.