May 29, 2009

Exhibit 10.15

May 29, 2009

Via FedEx Airbill No. 797635092471
and Facsimile (000) 000-0000

Mr. Xxxxx Xxxxxxx
Resolute Natural Resources Company
000 Xxxxx Xxxxxx, Xxxxx 000
Xxxxx, Xxxxxxxx 00000

RE:  Western Contract No. P0803131FC dated March 17, 2008
         (the “Agreement”)

Dear Xx. Xxxxxxx:

     This letter is to advise you that Western Refining Southwest, Inc. (“Western”) has elected to terminate the referenced Agreement. Under the “Term” section on page 1 of the Agreement, the Agreement was effective on May 1, 2008, with automatic month-to-month extensions thereafter subject to a ninety (90) day written notice of cancellation.

     This letter serves as Western’s ninety (90) day written notice that the Agreement will terminate, effective August 31, 2009.

     If you have any questions, please feel free to contact me.

Sincerely,

WESTERN REFINING
 

/s/ Xxxxxxx X. Xxxxxxxx  

Xxxxxxx X. Xxxxxxxx 

Vice President — Raw Material Supply & Logistics Western Refining Southwest, Inc.