Exhibit 2

Joint Filing Agreement

The undersigned parties hereby agree to the joint filing of the Statement on Schedule 13D filed herewith, and any amendments hereto, relating to the Common Units of Dominion Energy Midstream Partners, LP, with the Securities and Exchange Commission pursuant to Rule 13d-1(k).

Dated: July 9, 2018

DOMINION ENERGY, INC. a Virginia corporation
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer
DOMINION COVE POINT, INC. a Virginia corporation
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer
DOMINION MLP HOLDING COMPANY, LLC a Delaware limited liability company
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer
DOMINION ENERGY MIDSTREAM GP, LLC a Delaware limited liability company
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer
DOMINION ENERGY QUESTAR CORPORATION a Utah corporation
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer

QPC HOLDING COMPANY a Utah corporation
By:	/s/ James R. Chapman
	James R. Chapman
	Senior Vice President - Mergers & Acquisitions and Treasurer