CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports dated January 21, 1998 included in this Form 10-K into the Company's previously filed Registration Statement File No. 33-1658, No. 333-13693, No. 333-13695 and No. 333-41371 on Form S-8. ARTHUR ANDERSEN LLP Portland, Oregon, March 30, 1998 F-25