Exhibit 1

JOINT FILING AGREEMENT

The undersigned hereby agree as follows:

(i)Each of them is individually eligible to use the Schedule 13D to which this Exhibit is attached, and such Schedule 13D is filed on behalf of each of them; and

(ii)Each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

Dated: November 25, 2016

[Signature Pages Follow]

EMG INVESTMENT, LLC
By:	NGP MR Management, LLC,
	its manager
By:	/s/ John T. Raymond
	John T. Raymond
	Chief Executive Officer
NGP MR MANAGEMENT, LLC
By:	/s/ John T. Raymond
	John T. Raymond
	Chief Executive Officer
By:	/s/ John G. Calvert
	John G. Calvert
	Chief Operating Officer
/s/ John T. Raymond
John T. Raymond
/s/ John G. Calvert
John G. Calvert

Signature Page to Joint Filing Agreement