Exhibit 99.2 Arthur Andersen LLP Suite 1300 711 Louisiana Street Houston, TX 77002-2786 Tel: 713.237.2323 Fax: 713.237.2785 February 5, 2002 Mr. Jerry L. Peters Chief Financial and Accounting Officer Northern Border Partners, L.P. 1400 Smith Street Houston, Texas 77002-7369 Dear Mr. Peters: This is to confirm that the client-auditor relationship between both Northern Border Partners, L.P. (Commission File Number 1-12202) and Northern Border Pipeline Company (Commission File Number 333-88577) and Arthur Andersen LLP has ceased. Very truly yours, /s/ Arthur Andersen LLP Copy to: SEC Office of Chief Accountant