Exhibit 1

JOINT FILING AGREEMENT

     The undersigned, and each of them, do hereby agree and consent to the filing of a single statement on behalf of all of them on Schedule 13G and amendments thereto, in accordance with the provisions of Rule 13d-1(k)(1) of the Securities Exchange Act of 1934, as amended.

Date: February 16, 2010

SINCLAIR TULSA REFINING COMPANY
By:	/s/ Ross B. Matthews
	Vice President
SINCLAIR OIL CORPORATION
By:	/s/ Ross B. Matthews
	Chief Executive Officer
THE SINCLAIR COMPANIES
By:	/s/ Ross B. Matthews
	Chief Operating Officer
CAROL HOLDING
By:	/s/ Carol Holding
	Carol Holding, individually