Corporate Information

Legal Counsel

Burnet, Duckworth & Palmer LLP
Calgary, Alberta

Bankers

Canadian Imperial Bank of Commerce
Bank of Montreal
The Bank of Nova Scotia
Royal Bank of Canada
The Toronto Dominion Bank
Bank of America, N.A., Canada Branch
BNP Paribas (Canada)
Citibank, N.A., Canadian Branch
HSBC Bank Canada
Alberta Treasury Branches
National Bank of Canada
Sumitomo Mitsui Banking Corporation of Canada
Bank of Tokyo-Mitsubishi UFJ (Canada)
Societe Generale (Canada Branch)
Export Development Canada
Caisse Centrale Desjardins
Union Bank, Canada Branch

Canadian Western Bank

United Overseas Bank Limited

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

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

Jason Fleury
Manager, Investor Relations
Telephone: (403) 539-6343
E-mail: jason.fleury@pennwest.com

Distribution: Aug 2010

CDN $0.15
  Payment Date:09.15.2010
  Record Date: 08.31.2010
  Ex-Dist. Date: 08.27.2010
   

Stock Quote: TSX: PWT.UN

LAST $19.58
CHANGE: $-0.10 (-0.508%)
VOL: 631769

Stock Quote: NYSE: PWE

LAST $18.60
CHANGE: $-0.08 (-0.428%)
VOL: 795175

Market Watch

 
S&P/TSX Comp. 81.90 12,085.68
S&P/TSX Energy 1.01 278.52
S&P 500 5.02 1,085.31
Cdn/US Exchange -0.0021 0.9504
*Delayed by 20 minutes