EXHIBIT 3.21 ARTICLES OF INCORPORATION OF GIANT PIPELINE COMPANY The undersigned, acting as incorporator of a corporation under the New Mexico Business Corporation Act, adopts the following Articles of Incorporation for the corporation: ARTICLE I The name of the corporation will be "GIANT PIPELINE COMPANY". ARTICLE II The period of duration is perpetual. ARTICLE III. The purpose or purposes for which the corporation is organized are: The transportation of liquid hydrocarbon products and any lawful business for which corporations may be incorporated under the New Mexico Business Corporation Act. ARTICLE IV. The aggregate number of shares which the corporation shall have authority to issue will be 500,000 shares of Common. ARTICLE V. Preemptive rights on any stock or security in any manner whatsoever are allowed. ARTICLE VI. The name of its initial registered agent is: CT Corporation System and the street address, city and zip code of its initial registered office in New Mexico is: 123 E. Marcy Street, Santa Fe, NM 87501. ARTICLE V. The number of constituting the initial board of directors is 3 and the names and addresses of the persons who have consented to serve as directors until the first annual meeting of shareholders or until their successors are elected and qualify are: NAME ADDRESS James E. Acridge 23733 N. Scottsdale Road Scottsdale, Arizona 85255 Fredric L. Holliger 23733 N. Scottsdale Road Scottsdale, Arizona 85255 Morgan M. Gust 23733 N. Scottsdale Road Scottsdale, Arizona 85255 ARTICLE VIII. The name and address of the incorporator is: NAME ADDRESS Kim H. Bullerdick 23733 N. Scottsdale Road Scottsdale, Arizona 85255 Dated: November 2, 1999. /s/ KIM H. BULLERDICK ---------------------------- Kim H. Bullerdick