X0306 4 2014-10-20 0001603286 Dominion Midstream Partners, LP DM 0001595982 Webb Mark O 120 TREDEGAR STREET RICHMOND VA 23219 1 VP and General Counsel Common Units (Limited Partner Interests) 2014-10-20 4 P 0 4000.0000 21.0000 A 4000.0000 D The Reporting Person is an officer of Dominion Midstream GP, LLC, the general partner of the Issuer. The Issuer is managed by the directors and officers of Dominion Midstream GP, LLC. /s/Charlotte B. Anderson, Power Of Attorney 2014-10-22