Exhibit 23 CONSENT OF INDEPENDANT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports included and incorporated by reference in this Form 11-K, into the Company's previously filed Registration Statement File Nos. 333-16851, 333-16835, and 333-25167. /s/Arthur Andersen LLP Arthur Andersen LLP Portland, Oregon June 24, 1998