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 Fixed Income and Asset Allocation Funds. She has been a director of the Company since March 2002. She is a member of the Audit Committee and the Finance Committee.