Stock Transfer Agent and Registrar
Please send address changes in writing to:
Wells Fargo Shareowner Services
161 North Concord Exchange
South St. Paul, Minnesota 55075
Telephone: (800) 468-9716

Investment Community
Please direct investor relations inquiries to:
MarkWest Energy Partners, L.P.
c/o Investor Relations
1515 Arapahoe St, Tower 2, Suite 700
Denver, Colorado  80202
Telephone: (866) 858-0482
Email Address: investorrelations@markwest.com