Patricia A Hammick

Patricia A. Hammick has served on the Board since June 2001. She currently serves on the Nominating and Corporate Governance and Compensation Committees. Mrs. Hammick also currently serves as lead independent director for the board of directors of Dynegy Inc., an independent power producer to which she was elected in April of 2003. Since January 2007, she has also been a director of SNC - Lavalin Group, Inc. ("SNC"), a company engaged in engineering and construction, infrastructure ownership and management, and facilities and operations management. She serves as a member of SNC's audit and health, safety & environment committees. She is a member of the National Association of Corporate Directors and was an adjunct professor in graduate studies at The George Washington University from 2001 to 2003.