Plum Creek Timber (PCL) 10-Q 2003 Q1 Quarterly report

Certification of Chief Executive Officer 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 March 31, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Rick R. Holley, as Chief Executive 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 results of operations of the Company.

By: /s/ RICK R. HOLLEY
Rick R. Holley
Chief Executive Officer
May 6, 2003

A signed original of this written statement required by Section 906 of the Sarbanes–Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its Staff upon request.