POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that Michael E. Wiley
constitutes and appoints Charles S. Parrish, Carrie P. Ryan and Jean M. Mosel, and each
of them, as his true and lawful attorney-in-fact and agent for him and in his name, place
and stead, in any and all capacities, to sign any or all Forms 3, 4, and 5 relating to equity
securities of Tesoro Logistics LP (the "Company") pursuant to the requirements of
Section 16 of the Securities Exchange Act of 1934, and to file the same with the
Securities and Exchange Commission and the New York Stock Exchange, granting unto
said attorney-in-fact and agent full power and authority to do and perform each and every
act and thing requisite and necessary to be done in about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and affirming all
that said attorney-in-fact and agent may lawfully do or cause to be done by virtue hereof.
This authorization, unless earlier revoked by the undersigned in writing, shall be valid
until the undersigned's reporting obligations under Section 16 with respect to equity
securities of the Company shall cease.
Date: ______________________
____________________________________
Michael E. Wiley
