Trust Information

Legal Counsel

Burnet, Duckworth & Palmer
Calgary, Alberta

Bankers

Canadian Imperial Bank of Commerce
Royal Bank of Canada
The Bank of Nova Scotia
Bank of Montreal
Bank of Tokyo-Mitsubishi UFJ (Canada)
Alberta Treasury Branches
Sumitomo Mitsui Banking Corporation of Canada
BNP Paribas (Canada)
Societe Generale (Canada Branch)
HSBC Bank Canada

The Toronto Dominion Bank

Citibank, N.A., Canadian Branch

National Bank of Canada

Fortis Capital (Canada) Ltd.

Bank of America, N.A., Canada Branch

West LB AG, Toronto Branch

Union Bank of California, Canada Branch

Caisse Centrale Desjardins

Transfer Agent

CIBC Mellon Trust Company
Calgary, Alberta

Investors are encouraged to contact The CIBC Mellon Trust Company for information regarding their security holdings. They can be reached at:

CIBC Mellon Trust Company:
(416) 643-5000 or toll-free throughout
North America at 1-800-387-0825

Website: www.cibcmellon.com

Auditors

KPMG LLP
Calgary, Alberta

Independent Reserve Evaluators

GLJ Petroleum Consultants Ltd.
Calgary, Alberta

Sproule Associates Limited

Calgary, Alberta

Stock Exchange Listing

Toronto Stock Exchange
Trading Symbol: PWT.UN

Debentures: PWT.DB.B,PWT.DB.C, PWT.DB.D, PWT.DB.E, PWT.DB.F

New York Stock Exchange

Trading Symbol: PWE

Head Office

Suite 200, 207 - 9th Avenue S.W.
Calgary, Alberta T2P 1K3
Telephone: (403) 777-2500
Toll Free: 1-866-693-2707
Fax: (403) 777-2699

For further information contact:

William Andrew
Director and Chief Executive Officer
Telephone: (403) 777-2502
E-mail: bill.andrew@pennwest.com

Murray Nunns
President and Chief Operating Officer
(403) 218-8939
Email: murray.nunns@pennwest.com

Jason Fleury

Manager, Investor Relations

(403) 539-6343

E-mail: jason.fleury@pennwest.com