EXHIBIT A JOINT FILING AGREEMENTJoint Filing Agreement • December 18th, 2007 • Macquarie Infrastructure Management (USA) INC • Wholesale-petroleum & petroleum products (no bulk stations)
Macquarie Group Limited, Macquarie Group Services Australia Pty Limited and Macquarie Infrastructure Management (USA) Inc. in compliance with Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended, hereby agree that the statement on Schedule 13D to which this Agreement is attached as an exhibit is, and any amendments thereto filed by any of us will be, filed on behalf of each such company, that each such company is responsible for the timely filing of the Schedule 13D and any amendments thereto and for the completeness and accuracy of the information concerning such company contained therein.
