Exhibit 23
Consent of Independent Public Accountants
As independent public accountants, we hereby consent to the
incorporation by reference of our reports included in this
Form 10-K, into the Company's previously filed Registration
Statements: (1) Registration Statement File No. 33-40472 on
Form S-8 of the 1986 Stock Option Plan, the 1985 Stock Incentive
Plan, the 1985 Key Employee Incentive Stock Option Plan and the
Individual Written Compensation Plan dated May 10, 1991, (2)
Registration Statement File No. 33-44864 on Form S-8 of the 1986
Restated and Amended Stock Option Plan and Directors' Stock
Option Plan dated January 8, 1992, (3) Registration Statement on
Form S-8 of the 1992 Employee Stock Purchase Plan dated June 16,
1992, (4) Registration Statement File No. 33-86548 on Form S-3
dated November 21, 1994, (5) Registration Statement File
No. 33-65463 on Form S-3 dated December 28, 1995, as amended on
February 9, 1996, (6) Registration Statement File No. 333-28565
on Form S-8 of the 1997 Non-Officer Employee Stock Option Plan
dated June 5, 1997, as amended on October 29, 1997, and
(7) Registration Statement File No. 333-62523 on Form S-8 of the
1997 Equity Participation Plan dated August 31, 1998.
ARTHUR ANDERSEN LLP
Portland, Oregon
June 28, 2000
