Exhibit 99.1
CERTIFICATION OF CHAIRMAN OF THE BENEFITS ADMINISTRATION COMMITTEE
AND PLAN ADMINISTRATOR
PURSUANT TO 18 U.S.C. §1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Stephen T. Calhoun, hereby certify pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
(1) The Annual Report of Packaging Corporation of America Retirement Savings Plan for Salaried Employees (the “Plan”) on Form 11-K for the year ended December 31, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2) The information contained in such Report fairly presents, in all material respects, the financial condition and results of operations of the Plan.
/s/ Stephen T. Calhoun |
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Stephen T. Calhoun |
Chairman of the Benefits Administration Committee |
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June 30, 2003 |
I, Scott D. Selbe, hereby certify pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
(1) The Annual Report of Packaging Corporation of America Retirement Savings Plan for Salaried Employees (the “Plan”) on Form 11-K for the year ended December 31, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2) The information contained in such Report fairly presents, in all material respects, the financial condition and results of operations of the Plan.
/s/ Scott D. Selbe |
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Scott D. Selbe |
Plan Administrator |
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June 30, 2003 |