Certification Pursuant to
18 U.S.C. Section 1350,
As Adopted Pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Plum Creek Timber Company, Inc. (the “Company”) for the period ended September 30, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), William R. Brown, as Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1) The Report fully complies with the requirements of section 13(a) or section 15(d) of the Securities Exchange Act of 1934; and

 

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

 

Date: November 3, 2003
 

By: /s/ William R. Brown
WILLIAM R. BROWN
Executive Vice President and Chief Financial Officer