EXHIBIT 23.1 REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated January 17, 2001, included in this Form 10-K, into the Company's previously filed Form S-8 Registration Statements No. 33-88704 and No. 33-62063. /s/ Arthur Andersen, LLP San Francisco, California March 9, 2001