EXHIBIT 99.1 Inland Resources Inc. 410 Seventeenth Street, Suite 700 Denver, Colorado 80202 March 26, 2002 Securities and Exchange Commission 450 5th Street, NW Washington, DC 20549 Ladies and Gentlemen: Pursuant to Securities and Exchange Commission Release Nos. 33-8070; 34-45590; 35-27503; 39-2395; IA-2018; IC-25464; FR-62; File No. S7-03-02, this letter is to confirm that Inland Resources Inc. has received assurance from its independent public accountants, Arthur Andersen LLP ("Arthur Andersen"), that Arthur Andersen's audit of our consolidated financial statements as of December 31, 2001 and for the year then ended (the "Audit") was subject to Arthur Andersen's quality control system for the U.S. accounting and auditing practice to provide reasonable assurance that the engagement was conducted in compliance with professional standards, that there was appropriate continuity of Arthur Andersen personnel working on the Audit, availability of national office consultation, and availability of personnel at foreign affiliates of Arthur Andersen to conduct the relevant portions of the Audit. INLAND RESOURCES INC. /s/ Bill I. Pennington ----------------------------------- President & Chief Financial Officer