EX-99.A 2 dex99a.htm AGREEMENT PURSUANT TO RULE 13D-1(K) Agreement Pursuant to Rule 13d-1(k)

EXHIBIT A

Pursuant to Rule 13d-1(k) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, the undersigned agrees that the statement to which this Exhibit is attached is filed on behalf of each of them in the capacities set forth below.

DATED: May 11, 2011

 

By:  

/S/    KIM M. SILVA        

  Kim M. Silva

Attorney-in-Fact for:

 

SPO PARTNERS II, L.P. (1)

SPO ADVISORY PARTNERS, L.P. (1)

SAN FRANCISCO PARTNERS, L.P. (1)

SF ADVISORY PARTNERS, L.P. (1)

SPO ADVISORY CORP. (1)

BILL & SUSAN OBERNDORF FOUNDATION (1)

THE JOHN H. SCULLY LIVING TRUST, DATED 10/1/03 (1)

NETCONG NEWTON PARTNERS, L.P. (1)

PHOEBE SNOW FOUNDATION, INC. (1)

JOHN H. SCULLY (1)

WILLIAM E. OBERNDORF (1)

WILLIAM AND SUSAN OBERNDORF TRUST, DATED 10/19/98 (1)

EDWARD H. MCDERMOTT (1)

KURT C. MOBLEY (1)

BETTY JANE WEIMER (1)

ELI J. WEINBERG (1)

OBERNDORF FAMILY PARTNERS (1)

KURT AND TAMRA MOBLEY TRUST, DATED 4/20/04 (2)

 

(1) 

A Power of Attorney authorizing Kim M. Silva to act on behalf of this person or entity has previously been filed with the Securities and Exchange Commission.

(2) 

A Power of Attorney authorizing Kim M. Silva to act on behalf of this person or is filed as Exhibit C.