Exhibit 9

EnLink Midstream Manager, LLC, its managing member

/s/ Michael J. Garberding

Michael J. Garberding

President and Chief Executive Officer

Exhibit 9

JOINT FILING AGREEMENT

We, the undersigned, hereby express our agreement that the attached Schedule 13D/A is, and any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This agreement may be terminated with respect to the obligations to jointly file future amendments to such statement on Schedule 13D as to any of the undersigned upon such person giving written notice thereof to each of the other persons signatory hereto, at the principal office thereof.


Date: June 14, 2018	DEVON ENERGY CORPORATION

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President and Chief Financial Officer

	DEVON ENERGY CORPORATION (OKLAHOMA)

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President

	DEVON GAS CO., L.L.C.

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President

	SOUTHWESTERN GAS PIPELINE, L.L.C.

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President

	DEVON GAS OPERATING, INC.

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President

	DEVON GAS SERVICES, L.P.

	By:	/s/ Jeffrey L. Ritenour
	Name:	Jeffrey L. Ritenour
	Title:	Executive Vice President


		ENLINK MIDSTREAM MANAGER, LLC

		By:		/s/ Michael J. Garberding
		Name:		Michael J. Garberding
		Title:		President and Chief Executive Officer

		ENLINK MIDSTREAM, LLC


		ENLINK MIDSTREAM, INC.

		By:		/s/ Michael J. Garberding
		Name:		Michael J. Garberding
		Title:		President and Chief Executive Officer

		ACACIA NATURAL GAS CORP I, INC.

		By:		/s/ Michael J. Garberding
		Name:		Michael J. Garberding
		Title:		President and Chief Executive Officer

JOINT FILING AGREEMENT