X0206 3 2012-10-24 1 0001552000 MPLX LP MPLX 0001521739 Templin Donald C. C/O MPLX LP 200 E. HARDIN STREET FINDLAY OH 45840 1 1 0 0 VP and Chief Financial Officer Exhibit List: Exhibit 24 - Power of Attorney Mr. Templin is a director and the Vice President and Chief Financial Offier of MPLX GP LLC, the general partner of the Issuer. The Issuer is managed by the directors and executive officers of MPLX GP LLC. /s/ Molly R. Benson, Attorney-in-Fact for Donald C. Templin 2012-10-24