Ms. Knowles retired from Atlantic Richfield Company ("ARCO") in 2000 and was Executive Vice President and Chief Financial Officer from 1996 until 2000 and a director from 1996 until 1998. She joined ARCO in 1972. Ms. Knowles is also a member of the Board of Trustees of the Fidelity Funds. She has been a director of the Company since March 2002. She is the Chair of the Audit Committee and a member of the Finance Committee.