Document:

Exhibit

Exhibit 10.1

CONFIDENTIAL SEPARATION AGREEMENT AND GENERAL RELEASE
THIS CONFIDENTIAL SEPARATION AGREEMENT AND GENERAL RELEASE (“Agreement”) is made and entered into by and between Randall Stilley (“Employee”) and Paragon Offshore Services LLC, Paragon Offshore PLC, Paragon International Investment Limited, and their affiliates (collectively the “Company”) as of the date of the Employee’s signature to this Agreement (the “Effective Date”).
WHEREAS, the Employee’s employment with the Company has terminated and the Company seeks an amicable end of the employment relationship; and
WHEREAS, Employee and the Company desire to settle fully and finally any and all differences between them as of the Effective Date of this Agreement, including, but not limited to, any and all differences arising from or in any way connected with Employee’s employment with the Company or the termination of that employment.
NOW, THEREFORE, in consideration of the payments, mutual promises and agreements contained herein, and other good and valuable consideration the sufficiency of which is hereby acknowledged, the parties voluntarily agree as follows:
		
	1.
	Severance Consideration.  In exchange for the execution of this Agreement, and the mutual covenants and promises contained herein, with the exception of those contained in Section 2 and Section 4, the Company agrees as following: 

		
	a.
	The Employee has satisfied his obligation to execute a full release of claims as required by Section 1 of the Key Employee Retention Plan (KERP) dated November 4, 2015, to prevent the forfeiture of the “Commitment Amount” previously paid to the Employee pursuant to the KERP, and Executive shall be entitled to retain such Commitment Amount.  

		
	b.
	Where elected by Employee, to provide Employee with continued health insurance, dental, and vision insurance coverage in accordance with this clause (b).  The Company shall make the required COBRA payments based on Employee’s current elections for health, dental, and vision insurance, along with any required administrative fee (but not other amounts that might otherwise be available or elected under COBRA, such as flexible spending accounts) through November 30, 2017, or until Employee is employed at a new employer that provides health insurance coverage, whichever occurs first.  If Employee remains eligible for continuation coverage under COBRA after the period above expires for the Company to make the payments for COBRA coverage, Employee will be solely responsible for making all required payments for such remaining continuation coverage.

		
	c.
	To cause the 748,530 unvested time-vested restricted stock units awarded to Employee pursuant to the Paragon Offshore plc 2014 Omnibus Incentive Plan to become fully vested on or before December 5, 2016.

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Exhibit 10.1

		
	d.
	To code the Employee’s termination to permit the accelerated vesting of the Company's matching portion of the Employee’s 401(k) contributions.

		
	e.
	To pay the Employee four hundred and seventy-five thousand dollars ($475,000.00), less applicable taxes and other withholdings, payable on the day that is ten days after the receipt by the Company of a fully executed copy of this Agreement.

All compensation and any other amounts lawfully owed to Employee will be paid regardless of whether Employee executes this Agreement. This includes (i) all unused vacation which was paid on November 30, 2016 and (ii) reimbursement of all expenses incurred by Employee pursuant to which Employee is entitled to reimbursement pursuant to the Company’s policies.
		
	2.
	Additional Severance Consideration for Release of Age Claims. In exchange for the execution of this Agreement, and the mutual covenants and promises contained in this Section 2 and Section 4, the Company agrees to pay Employee the following payment (the “Additional Severance Payment”): 

		
	a.
	Twenty-five thousand dollars, ($25,000.00), less applicable taxes and other withholdings, payable on the day that is ten days after the receipt by the Company of a fully executed copy of this Agreement, and provided Employee has not revoked acceptance as provided for herein.

		
	3.
	Employee’s Consideration and Covenants.  In exchange for the execution of this Agreement, and the mutual covenants and promises contained herein, with the exception of those contained in Section 2, the Employee agrees as follows:

		
	a.
	To continue to be bound by all confidentiality obligations owed to the Company and to continue hold all confidential information and other non-public information and/or proprietary information of the Company in confidence.

		
	b.
	To provide all passwords, file information, and other work-related information to the Company as requested. 

		
	c.
	To release and forever discharge the Company, its parent, general partners, limited partners, and all affiliated business entities, and each of their current and former predecessors, subsidiaries, affiliates, successors, assigns, agents, attorneys, officers, directors, stockholders, employees and each of their heirs, successors, assigns, agents, attorneys, officers, directors, stockholders and employees (hereinafter referred to as “Releasees”) from any and all claims, charges, complaints, liabilities, or obligations of any kind whatsoever, whether known or unknown, suspected or unsuspected, fixed or contingent, arising in tort or contract, that Employee may have, now has, or has ever had arising from Employee’s employment with the Company or termination of that employment, or any other matter or event that may have occurred as of the 

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Exhibit 10.1

Effective Date or Termination Date, whichever is later.  Employee understands and agrees that this Release includes, but is not limited to, waivers of any and all claims, charges, complaints, liabilities, or obligations under applicable federal, state, or local law. These claims include, but are not limited to: (a) any and all claims based upon unpaid wages, unpaid severance, unpaid bonuses, or other compensation; (b) any and all claims based on violations of Title VII of the Civil Rights Act of 1964, the Civil Rights Act of 1991, the Americans with Disabilities Act, the Employee Retirement Income Security Act, the Family and Medical Leave Act, the Equal Pay Act, Title 42 U.S.C. § 1981, and the Pregnancy Discrimination Act; (c) any and all claims under Texas statutory or common law, including but not limited to claims brought under the Texas Commission on Human Rights Act, the Texas Labor Code, and the Texas Pay Day Law; and (d) any and all claims under state, federal, or common law relating to wrongful discharge, discrimination, harassment, including but not limited to breach of express or implied contract, promissory estoppel, emotional distress, defamation, invasion of privacy rights, fraud, or misrepresentation, including but not limited to any claims related to the Employee’s employment agreement with Paragon Offshore Services LLC dated September 16, 2014, the KERP, and any other contracts or agreements the Employee may have with any of the Releasees.  Employee intends the release set forth above to be as broad and comprehensive as possible so that the Releasees shall never be liable, directly or indirectly, to the Employee for any claims, demands, actions, or causes of action of whatsoever nature or character released herein. The release provided in this Section 3(c) does not apply to any claims under the Age Discrimination in Employment Act (“ADEA”) or the Older Worker’s Benefit Protection Act, and any claims that may arise after the Effective Date.  
		
	d.
	That the severance consideration provided in Section 1 is good and valuable consideration for the release and other covenants that the Employee is making in this Agreement and includes additional consideration to that which Employee might be entitled.

		
	e.
	That the release referenced above is a material inducement for the Company to enter into this Agreement.

		
	f.
	That Employee will not file a complaint, petition, or lawsuit, either individually or collectively, for any claim released pursuant to this agreement against the Releasees, except to enforce this Agreement. Employee agrees that if Employee breaches this Agreement and files a complaint, petition, or lawsuit, Employee shall be liable for any and all expenses incurred by the person or entity who defends the action, including reasonable attorney’s fees.  Notwithstanding the foregoing, nothing in this Agreement prevents you from exercising any rights that cannot be lawfully waived or restricted.

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Exhibit 10.1

		
	g.
	That, for a period of twelve (12) months after the date hereof, the Employee shall not, directly or indirectly, whether on his own behalf, or as an employee, officer, director, manager, member, owner, consultant or agent of any other person, firm, company, corporation, partnership, limited liability company, incorporated or unincorporated association, joint venture, joint stock company, governmental authority (including any federal, state, provincial, territorial, municipal, local or foreign government, regulatory or administrative agency, governmental commission, department, board, bureau, ministry or agency) or other entity, solicit, entice, encourage or intentionally influence, or attempt to solicit, entice, encourage or influence, any employee of the Company or any of its affiliates who is employed by the Company or any of its affiliates or hire or employ such employees, in any capacity; provided, however, that the Company understands and acknowledges that the Employee may currently or in the future serve as a non-executive member of the board of directors (or similar governing body) of one or more companies, corporations and/or limited liability companies and for purposes of clarity, the obligations in this Section 3(g) are not intended to restrict any such company, corporation or limited liability company from soliciting for employment or hiring or employing any employee of the Company or any of its affiliates so long as the Employee is not involved in such hiring process (including, without limitation, by recommending any such employee to any person involved in such hiring process).  Should any court of competent jurisdiction declare any of the provisions in this Section 3(g) to be an unreasonable or otherwise unenforceable restriction against the Employee, the provisions of this Section 3(g) will not be rendered void but will be deemed to be modified to the extent necessary to remain in force and effect for the longest period and covering the largest group of employees of the Company and its affiliates that would not constitute such an unreasonable or unenforceable restriction (and such court shall have the power to reduce the duration or restrict or redefine the scope of the employees covered by this provision and to enforce such provision as so reduced, restricted or redefined).

		
	4.
	Release of Age Related Claims. In exchange for the execution of this Agreement, and the mutual covenants and promises contained in Section 2 and this Section 4, the Employee agrees as follows:

		
	a.
	To release and forever discharge the Releasees from any and all claims, charges, complaints, liabilities, or obligations of any kind whatsoever, whether known or unknown, suspected or unsuspected that Employee may have, now has, or has ever had arising from Employee’s employment with the Company or termination of that employment, or any other matter or event that may have occurred as of the Effective Date or Termination Date, whichever is later which could be brought under the Age Discrimination in Employment Act (“ADEA”) or the Older Worker’s Benefit Protection Act.

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Exhibit 10.1

		
	5.
	Termination Date.  Employee acknowledges that Employee’s employment with the Company terminated effective November 9, 2016, (the “Termination Date”). Employee will, as of the Termination Date, be deemed to have automatically resigned as from any and all positions held with any Company, and hereby agrees to execute any and all further documentation necessary to remove Employee as an officer or member of the governing body of any Company.  

		
	6.
	Return of Company Property.  On or before the Effective Date, Employee agrees to return to the Company all property belonging to the Company that Employee may possess, or that Employee has possessed but has provided to a third party, including but not limited to, all computers, PDAs, Company vehicle (if applicable), equipment, security passes, Company credit cards, originals and copies of Company documents, files, memoranda, notes, computer-readable information (maintained on disk or in any other form) and video or tape recordings of any kind other than personal materials relating solely to the Employee.  Employee has not and will not retain, distribute, or cause to be distributed, any original or duplicates of any such Company property specified in this paragraph.

		
	7.
	Trade Secrets and Confidential Information.  Employee acknowledges that as a result of Employee’s employment with the Company, Employee received confidential and proprietary information of special value to the Company.  Employee agrees to keep confidential all trade secrets and other confidential and proprietary information, whether written or verbal, provided by, or acquired as a result of any affiliation with the Company, including any such information and material relating to any customer, vendor, licensee, or other party transacting business with the Company, and not to release, use, or disclose that information except with the prior written permission of the Company.

		
	8.
	Confidentiality of Terms of Agreement.  As an additional material inducement to the Company to enter this Agreement, Employee agrees to keep the terms of the Agreement confidential and will not disclose the provisions hereof to anyone except Employee’s attorney(s) and tax advisor(s) or except as required by law.  Any further disclosure by Employee, other than as authorized above, shall constitute a breach of this Agreement. Employee acknowledges that the Company may be required to make certain public disclosures related to the Employee’s termination and that such disclosures would not be a violation of this Agreement or any other obligation owed to the Employee. 

		
	9.
	Non-Disparagement.  Employee agrees not to make negative or disparaging remarks to any person about the Company, Employee’s employment with the Company, or the events which led to this Agreement, and agrees that Employee will not speak publicly to the media or anyone else, individually or through Employee’s legal or other representatives, about these matters or this Agreement.   

		
	10.
	Knowing and Voluntary Execution.  Employee understands and agrees that he: 

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Exhibit 10.1

		
	a.
	is not waiving any rights or claims under the ADEA or that may arise after the later of the Effective Date or Termination Date, or any rights or claims to test the knowing and voluntary nature of this Agreement under the Older Workers’ Benefit Protection Act, as amended;

		
	b.
	has carefully read and fully understands all of the provisions of this Agreement;

		
	c.
	knowingly and voluntarily agrees to all of the terms set forth in this Agreement and to be bound by this Agreement;

		
	d.
	is hereby advised in writing to consult with an attorney and tax advisor of Employee’s choice prior to executing this Agreement, and has had the opportunity and sufficient time to seek such advice;

		
	e.
	is releasing the Company from any and all claims Employee may have against the Company arising on or before the Effective Date or Termination Date, whichever is later, including claims arising under the ADEA;  

		
	f.
	may take up to (21) days to consider whether Employee desires to execute this Agreement; and

		
	g.
	has a period of seven (7) days after executing this Agreement to revoke the release of claims contained in Section 4 and that any such revocation must be in writing and delivered, prior to expiration of the seven day revocation period, to Todd Strickler, Senior Vice President of Administration, General Counsel and Corporate Secretary, at TStrickler@ParagonOffshore.com or 3151 Briarpark Drive, Suite 700, Houston, Texas 77042.  Employee acknowledges that any revocation would only be effective as to the claims released under Section 4 and would not extend to the claims released in Section 3.  

		
	11.
	No Admission of Liability.  This Agreement and any payment hereunder shall not in any way be construed as an admission by the Company of any improper actions or liability whatsoever as to Employee or any other person, and the Company specifically disclaims any liability to or improper actions against Employee or any other person, on the part of itself, its employees or its agents.

		
	12.
	Ownership of Claims.  Employee warrants that she/he is the owner of her/his claims and causes of actions and further warrants that Employee has not assigned any portion of part thereof to any person, firm or corporation or any other association of any kind or character.

		
	13.
	Responsibility for Taxes.  Employee is solely responsible for payment of any and all required federal, state, local and federal taxes incurred as a result of consideration paid pursuant to this Agreement.  The Company shall have the right to withhold from all amounts and benefits payable to Employee under this Agreement, or under any 

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Exhibit 10.1

other arrangement with the Company, all federal, state, local and foreign taxes that are required to be withheld pursuant to any applicable law or regulation.
		
	14.
	Entire Agreement.   This Agreement constitutes the complete agreement made between you and the Releasees regarding the subject matter in this Agreement. No change, modification, or waiver of any term or condition in this Agreement shall be valid or binding upon the Company and Employee, unless such change, modification, or waiver is in writing, signed by the Company and the Employee.  Employee has not relied on or been induced by any representation by the Company, except as expressly contained in this Agreement, in connection with Employee’s decision to enter into this Agreement.

		
	15.
	Communications with Government Agencies.    Nothing contained in this Agreement limits the Employee’s ability to file a charge or complaint with the Equal Employment Opportunity Commission or any other federal, state or local governmental agency or commission (“Government Agencies”).  Further, this Agreement does not limit Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or preceding that may be conducted by any Government Agency, including providing documents or other information, without notice to the Company.  This Agreement does not limit Employee’s right to receive an award from a Government Agency for information provided to any Government Agencies.  However, Employee agrees that he has waived any right to recover monetary damages or other personal relief, where such rights can be lawfully waived, from the Releases in any action filed by Employee or by anyone else on Employee’s behalf.

		
	16.
	Severability.  Should any court of competent jurisdiction declare any provision of this Agreement to be wholly or partially illegal, invalid, unenforceable, or unreasonable, the offending provision shall be stricken, modified, or amended to the extent that such illegality, invalidity, unenforceability, or unreasonableness is cured, and all remaining provisions shall remain in full force and effect and shall be unaffected by such declaration. 

		
	17.
	Governing Law and Consent to Venue.  All terms of this Agreement shall be governed and enforced in accordance with the laws of the State of Texas, without regard to conflict of law principles.  The parties agree that any dispute arising out of this Agreement will be litigated solely and exclusively in the state or federal courts of Harris County, Texas.

[Signatures on Following Page]

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Exhibit 10.1

PLEASE READ CAREFULLY.  THIS CONFIDENTIAL SEPARATION AND GENERAL RELEASE AGREEMENT INCLUDES A GENERAL RELEASE OF ALL CLAIMS AGAINST THE COMPANY ARISING OUT OF EMPLOYEE’S EMPLOYMENT WITH THE COMPANY OR THE TERMINATION THEREOF UP TO AND INCLUDING THE EFFECTIVE DATE OR TERMINATION DATE (WHICHEVER IS LATER), INCLUDING ALL CLAIMS ARISING UNDER THE AGE DISCRIMINATION IN EMPLOYMENT ACT.
IN WITNESS WHEREOF, the parties hereto have entered into this Confidential Separation Agreement and General Release as of the Effective Date.
Employee:
/s/ Randall D. Stilley    
    
Name: Randall D. Stilley    

Effective Date: November 30, 2016

Company:  
/s/ Todd D. Strickler    
    
Name: Todd D. Strickler

Title: SVP of Administration,
           General Counsel & Corporate Secretary

Date: November 30, 2016

8EX-4.1

 Exhibit 4.1 

Execution Version 

DOMINION MIDSTREAM PARTNERS, LP 

and 
 THE PURCHASERS NAMED ON
SCHEDULE A 
 HERETO 
  

 
 REGISTRATION
RIGHTS AGREEMENT 
 Dated December 1, 2016 
  

 

 TABLE OF CONTENTS 

 

							
	 ARTICLE I. DEFINITIONS
	  	 	1	  
			
	 Section 1.01
	  	Definitions	  	 	1	  
	 Section 1.02
	  	Registrable Securities	  	 	5	  
		
	 ARTICLE II. REGISTRATION RIGHTS
	  	 	6	  
			
	 Section 2.01
	  	Shelf Registration	  	 	6	  
	 Section 2.02
	  	Piggyback Registration	  	 	8	  
	 Section 2.03
	  	Underwritten Offering	  	 	10	  
	 Section 2.04
	  	Further Obligations	  	 	11	  
	 Section 2.05
	  	Cooperation by Holders	  	 	15	  
	 Section 2.06
	  	Restrictions on Public Sale by Holders of Registrable Securities	  	 	16	  
	 Section 2.07
	  	Expenses	  	 	16	  
	 Section 2.08
	  	Indemnification	  	 	17	  
	 Section 2.09
	  	Rule 144 Reporting	  	 	19	  
	 Section 2.10
	  	Transfer or Assignment of Registration Rights	  	 	19	  
	 Section 2.11
	  	Limitation on Subsequent Registration Rights	  	 	20	  
	 Section 2.12
	  	Limitation on Obligations for Series A Preferred Unit Registrable Securities	  	 	20	  
		
	 ARTICLE III. MISCELLANEOUS
	  	 	20	  
			
	 Section 3.01
	  	Communications	  	 	20	  
	 Section 3.02
	  	Binding Effect	  	 	21	  
	 Section 3.03
	  	Assignment of Rights	  	 	21	  
	 Section 3.04
	  	Recapitalization, Exchanges, Etc. Affecting Units	  	 	21	  
	 Section 3.05
	  	Aggregation of Registrable Securities	  	 	21	  
	 Section 3.06
	  	Specific Performance	  	 	21	  
	 Section 3.07
	  	Counterparts	  	 	22	  
	 Section 3.08
	  	Governing Law, Submission to Jurisdiction	  	 	22	  
	 Section 3.09
	  	Waiver of Jury Trial	  	 	22	  
	 Section 3.10
	  	Entire Agreement	  	 	22	  
	 Section 3.11
	  	Amendment	  	 	23	  
	 Section 3.12
	  	No Presumption	  	 	23	  
	 Section 3.13
	  	Obligations Limited to Parties to Agreement	  	 	23	  
	 Section 3.14
	  	Interpretation	  	 	23	  
		
	 SCHEDULE A - Purchaser Name; Notice and Contact Information
	  	 	A-1	  
	 SCHEDULE B – Purchasers Deemed to have Delivered the Piggyback Opt-out
Notice
	  	 	B-1	  

 REGISTRATION RIGHTS AGREEMENT 

This REGISTRATION RIGHTS AGREEMENT, dated as of December 1, 2016 (this “Agreement”), is entered into by and
among DOMINION MIDSTREAM PARTNERS, LP, a Delaware limited partnership (the “Partnership”), and each of the Persons set forth on Schedule A hereto (the “Purchasers”). 

WHEREAS, this Agreement is made in connection with the closing of the issuance and sale of the Series A Preferred Units and Common Units (the
date of such closing, the “Closing Date”) pursuant to the Series A Preferred Unit and Common Unit Purchase Agreement, dated as of October 27, 2016, by and among the Partnership and the Purchasers (the “Purchase
Agreement”); and 
 WHEREAS, the Partnership has agreed to provide the registration and other rights set forth in this
Agreement for the benefit of the Purchasers pursuant to the Purchase Agreement. 
 NOW THEREFORE, in consideration of the mutual covenants
and agreements set forth herein and for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereby agree as follows: 

ARTICLE I. 
 DEFINITIONS

 Section 1.01 Definitions. As used in this Agreement, the following terms have the meanings indicated: 

“Affiliate” means, with respect to any Person, any other Person that directly or indirectly through one or more
intermediaries controls, is controlled by or is under common control with, the Person in question. As used herein, the term “control” (including, with correlative meanings, “controlled by” and “under common control
with”) means the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of a Person, whether through ownership of voting securities, by contract or otherwise. For the avoidance of doubt, for
purposes of this Agreement, (a) the General Partner or the Partnership, on the one hand, and any Purchaser, on the other, shall not be considered Affiliates and (b) any fund or account managed, advised or subadvised, directly or indirectly, by a
Purchaser or its Affiliates, shall be considered an Affiliate of such Purchaser. 
 “Agreement” has the meaning set
forth in the introductory paragraph of this Agreement. 
 “Average VWAP” per Common Unit over a certain period shall
mean the arithmetic average of the VWAP per Common Unit for each Trading Day in such period. 
 “Business Day” means
any day other than a Saturday, Sunday, any federal legal holiday or day on which banking institutions in the State of New York or Commonwealth of Virginia are authorized or required by law or other governmental action to close. 

“Closing Date” has the meaning set forth in the Recitals of this Agreement. 

  
 1 

 “Commission” means the United States Securities and Exchange Commission.

 “Common Unit Price” means $22.9525 per unit. 

“Common Unit Registrable Securities” means the Conversion Unit Registrable Securities and the PIPE Unit Registrable
Securities. 
 “Common Units” means the common units representing limited partner interests in the Partnership and
having the rights and obligations specified in the Partnership Agreement. 
 “Conversion Unit Registrable
Securities” means the Common Units issuable upon conversion of the Series A Preferred Units, all of which are subject to the rights provided herein until such time as such securities cease to be Registrable Securities pursuant to
Section 1.02. 
 “Conversion Unit Registration Statement” has the meaning specified in Section
2.01(a)(ii). 
 “DRI” means Dominion Resources, Inc. and its Affiliates. 

“Effective Date” means the date of effectiveness of any Registration Statement. 

“Effectiveness Period” has the meaning specified in Section 2.01(a)(iv). 

“Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time, and the rules and regulations
of the Commission promulgated thereunder. 
 “First Reserve” means FR DM Holdings II, LLC, a Delaware limited
liability company. 
 “General Partner” means Dominion Midstream GP, LLC, a Delaware limited liability company and
the general partner of the Partnership. 
 “Holder” means the record holder of any Registrable Securities. 

“Holder Underwriter Registration Statement” has the meaning specified in Section 2.04(q).

 “Included Registrable Securities” has the meaning specified in Section 2.02(a). 

“Initiating Holder” has the meaning specified in Section 2.03(b). 

“Liquidated Damages” has the meaning specified in Section 2.01(b). 

“Liquidated Damages Multiplier” means the product of (i) (a) with respect to any Registration Statement for the Common
Unit Registrable Securities, the Common Unit Price or (b) with respect to the Registration Statement for the Series A Preferred Unit Registrable Securities, the Preferred Unit Price and (ii) (a) in the case of clause (i)(a), the number of PIPE Unit
Registrable Securities or Conversion Unit Registrable Securities, as applicable, then held by the applicable Holder and to be included on the applicable PIPE Unit Registration Statement or Conversion Unit Registration Statement, and (b) in the case
of clause (i)(b), the number of Series A Preferred Unit Registrable Securities then held by the applicable Holder and to be included on the applicable Registration Statement. 

  
 2 

 “Losses” has the meaning specified in Section 2.08(a). 

“Managing Underwriter” means, with respect to any Underwritten Offering, the book running lead manager of such
Underwritten Offering. 
 “National Securities Exchange” means an exchange registered with the Commission under
Section 6(a) of the Exchange Act (or any successor to such Section) and any other securities exchange (whether or not registered with the Commission under Section 6(a) (or successor to such Section) of the Exchange Act) that the General Partner
shall designate as a National Securities Exchange for purposes of this Agreement. 
 “Other Holder” has the meaning
specified in Section 2.02(a). 
 “Partnership” has the meaning set forth in the introductory paragraph of
this Agreement. 
 “Partnership Agreement” means the Second Amended and Restated Agreement of Limited Partnership of
the Partnership, dated as of the date hereof, as amended. 
 “Person” means any individual, corporation, company,
voluntary association, partnership, joint venture, trust, limited liability company, unincorporated organization, government or any agency, instrumentality or political subdivision thereof or any other form of entity. 

“Piggyback Notice” has the meaning specified in Section 2.02(a). 

“Piggyback Opt-Out Notice” has the meaning specified in Section 2.02(a). 

“Piggyback Registration” has the meaning specified in Section 2.02(a). 

“PIK Units” means any additional Series A Preferred Units issued by the Partnership to the holders of Series A
Preferred Units pursuant to Section 5.11(b)(i)(A) of the Partnership Agreement. 
 “PIPE Unit Registrable
Securities” means the Common Units to be issued and sold to the Purchasers on the Closing Date pursuant to the Purchase Agreement, all of which are subject to the rights provided herein until such time as such securities cease to be
Registrable Securities pursuant to Section 1.02. 
 “PIPE Unit Registration Statement” has the meaning
specified in Section 2.01(a)(i). 
 “Preferred Unit Price” means $26.395375 per unit. 

“Preferred Unit Registration Statement” has the meaning specified in Section 2.01(a)(iii). 

“Purchase Agreement” has the meaning set forth in the Recitals of this Agreement. 

  
 3 

 “Purchasers” has the meaning set forth in the introductory paragraph of
this Agreement. 
 “Registrable Securities” means the Common Unit Registrable Securities and the Series A Preferred
Unit Registrable Securities. 
 “Registrable Securities Required Voting Percentage” means 75% of the outstanding
Series A Preferred Unit Registrable Securities voting together as a single class on an as-converted basis. 

“Registration” means any registration pursuant to this Agreement, including pursuant to a Registration Statement or a
Piggyback Registration. 
 “Registration Expenses” has the meaning specified in Section 2.07(a). 

“Registration Statement” has the meaning specified in Section 2.01(a)(iii). 

“Securities Act” means the Securities Act of 1933, as amended from time to time, and the rules and regulations of the
Commission promulgated thereunder. 
 “Selling Expenses” has the meaning specified in Section 2.07(a). 

“Selling Holder” means a Holder who is selling Registrable Securities pursuant to a Registration Statement. 

“Selling Holder Indemnified Persons” has the meaning specified in Section 2.08(a). 

“Series A Conversion Date” means the date on which all of the Series A Preferred Units are convertible into Common
Units pursuant to the terms of the Partnership Agreement. 
 “Series A Preferred Unit Registrable Securities” means
the Series A Preferred Units, all of which are subject to the rights of Series A Preferred Unit Registrable Securities provided herein until such time as such securities either (i) convert into Common Units pursuant to the terms of the Partnership
Agreement or (ii) cease to be Registrable Securities pursuant to Section 1.02. 
 “Series A Preferred Units”
means the Series A Preferred Units representing limited partner interests in the Partnership and having the rights and obligations specified in the Partnership Agreement to be issued and sold to the Purchasers pursuant to the Purchase Agreement,
including any PIK Units issued in connection therewith. 
 “Stonepeak” means Stonepeak Commonwealth Holdings LLC, a
Delaware limited liability company. 
 “Target Effective Date” means (a) with respect to the PIPE Unit Registration
Statement for the PIPE Unit Registrable Securities, 120 days from the date hereof, (b) with respect to the Conversion Unit Registration Statement for the Conversion Unit Registrable Securities, the second anniversary of the date hereof, and (c) with
respect to the Preferred Unit Registration Statement for the Series A Preferred Unit Registrable Securities, the Target Effective Date specified in Section 2.1(a). 

  
 4 

 “Trading Day” means a day on which the principal National Securities
Exchange on which the Common Units are listed or admitted to trading is open for the transaction of business or, if such Common Units are not listed or admitted to trading on any National Securities Exchange, a day on which banking institutions in
New York City generally are open. 
 “Underwriter” means, with respect to any Underwritten Offering, the
underwriters of such Underwritten Offering. 
 “Underwritten Offering” means an offering (including an offering
pursuant to a Registration Statement) in which Common Units are sold to an Underwriter on a firm commitment basis for reoffering to the public or an offering that is a “bought deal” with one or more investment banks. 

“VWAP” per Common Unit on any Trading Day shall mean the per Common Unit volume-weighted average price as displayed
under the heading “Bloomberg VWAP” on Bloomberg page “DM <equity> AQR” (or its equivalent successor if such page is not available) in respect of the period from the scheduled open of trading until the scheduled close of
trading of the primary trading session on such Trading Day (or if such volume-weighted average price is unavailable, the closing price of one Common Unit on such Trading Day as reported on the New York Stock Exchange’s website or the website of
the National Securities Exchange upon which the Common Units are listed). If the VWAP cannot be calculated for the Common Units on a particular date on any of the foregoing bases, the VWAP of the Common Units on such date shall be the
fair market value as determined in good faith by the Partnership in a commercially reasonable manner. 
 “WKSI”
means a well-known seasoned issuer (as defined in the rules and regulations of the Commission). 
 Section 1.02 Registrable
Securities. Any Registrable Security will cease to be a Registrable Security upon the earliest to occur of the following: (a) when a registration statement covering such Registrable Security becomes or has been declared effective by
the Commission and such Registrable Security has been sold or disposed of pursuant to such effective registration statement, (b) when such Registrable Security has been disposed of (excluding transfers or assignments by a Holder to an Affiliate or
to another Holder or any of its Affiliates or to any assignee or transferee to whom the rights under this Agreement have been transferred pursuant to Section 2.10) pursuant to any section of Rule 144 (or any similar provision then in
effect) under the Securities Act, (c) when such Registrable Security is held by DRI or the Partnership or one of its direct or indirect subsidiaries and (d) when such Registrable Security has been sold or disposed of in a private transaction in
which the transferor’s rights under this Agreement are not assigned to the transferee of such securities pursuant to Section 2.10. In addition, a Holder will cease to have rights to require Registration of any Registrable Securities
held by such Holder under this Agreement (i) with respect to Conversion Unit Registrable Securities and Series A Preferred Unit Registrable Securities, on the later of (A) the second anniversary of the date on which all Series A Preferred Units have
been converted into Common Units pursuant to Article V 

  
 5 

 
of the Partnership Agreement and, (B) if such Holder is an affiliate (as defined in Rule 144 promulgated under the Securities Act) of the Partnership, the date on which such Holder ceases to be
an affiliate of the Partnership, and (ii) with respect to PIPE Unit Registrable Securities, on the later of (A) the fifth anniversary of the date on which the PIPE Unit Registration Statement is effective and, (B) if such Holder is an affiliate (as
defined in Rule 144 promulgated under the Securities Act) of the Partnership, the date on which such Holder ceases to be an affiliate of the Partnership. For the avoidance of doubt, the provisions of this Section 1.02 do not modify the
transfer restrictions applicable to the Holders set forth in Section 5.11(b)(viii) of, and elsewhere in, the Partnership Agreement. 

ARTICLE II. 

REGISTRATION RIGHTS 

Section 2.01 Shelf Registration. 

(a) Shelf Registration Statements. 

(i) The Partnership shall use its commercially reasonable efforts to (i) prepare and file an initial registration statement
under the Securities Act to permit the resale of the PIPE Unit Registrable Securities from time to time as permitted by Rule 415 (or any similar provision adopted by the Commission then in effect) of the Securities Act (a “PIPE Unit
Registration Statement”) and (ii) cause such initial Registration Statement to become effective no later than the Target Effective Date for the PIPE Unit Registrable Securities.

(ii) The Partnership shall use its commercially reasonable efforts to (i) prepare and file an initial registration statement
under the Securities Act (or an amendment to the Registration Statement filed pursuant to Section 2.01(a)(i)) to permit the resale of the Conversion Unit Registrable Securities from time to time as permitted by Rule 415 (or any similar
provision adopted by the Commission then in effect) of the Securities Act (a “Conversion Unit Registration Statement”) and (ii) cause such initial Registration Statement or such amendment to become effective no later than the
Target Effective Date for the Conversion Unit Registrable Securities.
 (iii) If the Purchasers own more than 50% of the
number of Series A Preferred Units purchased under the Unit Purchase Agreement as of the date of such request, then, upon the written request of Purchasers holding a majority of the Series A Preferred Unit Registrable Securities (which request may
be given at least 180 days before the fifth anniversary of the date hereof), the Partnership shall use its commercially reasonable efforts to prepare and file, and cause to become effective no later than 180 days following receipt of such notice
(the 180th date being the Target Effective Date for the Series A Preferred Registrable Securities), an initial Registration Statement (or an amendment to the Registration Statement filed pursuant
to Section 2.01(a)(i) or Section 2.01(a)(ii)) to permit the resale of the Series A Preferred Unit Registrable Securities from time to time as permitted by Rule 415 (or any similar provision adopted by the Commission then in
effect) of the Securities Act (a “Preferred Unit Registration Statement” and, each Preferred Unit Registration Statement, PIPE Unit Registration Statement or Conversion 

  
 6 

 
Unit Registration Statement, a “Registration Statement”); provided, however, that the obligation of the Partnership to use such commercially reasonable
efforts to prepare, file, and cause to become effective such Registration Statement shall terminate immediately and be of no further force and effect if, at any time, the Purchasers fail to own more than 50% of the number of Series A Preferred Units
purchased under the Unit Purchase Agreement. 
 (iv) The Partnership will use its commercially reasonable efforts to cause
the Registration Statements filed pursuant to Section 2.01(a) to be continuously effective under the Securities Act, with respect to any Holder, until the earliest to occur of the following: (A) the date on which there are no longer any
Registrable Securities outstanding and (B) (1) with respect to Conversion Unit Registrable Securities and Series A Preferred Unit Registrable Securities, the later of (I) the second anniversary of the date on which all Series A Preferred Units have
been converted into Common Units pursuant to Article V of the Partnership Agreement and, (II) if such Holder is an affiliate (as defined in Rule 144 promulgated under the Securities Act) of the Partnership, the date on which such Holder ceases to be
an affiliate of the Partnership, and (2) with respect to PIPE Unit Registrable Securities, on the later of (I) the fifth anniversary of the date on which the PIPE Unit Registration Statement is effective and, (II) if such Holder is an affiliate (as
defined in Rule 144 promulgated under the Securities Act) of the Partnership, the date on which such Holder ceases to be an affiliate of the Partnership (in each case of clause (A) or (B) the “Effectiveness Period”). A
Registration Statement filed pursuant to Section 2.01(a) shall be on such appropriate registration form of the Commission as shall be selected by the Partnership; provided that, if the Partnership is then eligible, it shall file
such Registration Statement on Form S-3. A Registration Statement when declared effective (including the documents incorporated therein by reference) will comply as to form in all material respects with all applicable requirements of the Securities
Act and the Exchange Act and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading (and, in the case of any prospectus
contained in such Registration Statement, in the light of the circumstances under which a statement is made). As soon as practicable following the date that a Registration Statement becomes effective, but in any event within three Business Days of
such date, the Partnership shall provide the Holders with written notice of the effectiveness of such Registration Statement. 
 (b)
Failure to Become Effective. If a Registration Statement required by Section 2.01(a) does not become or is not declared effective by the applicable Target Effective Date, then each Holder shall be entitled to a payment
(with respect to each of the Holder’s Registrable Securities which are included in such Registration Statement), as liquidated damages and not as a penalty, of (i) for each non-overlapping 30-day period for the first 60 days following the
applicable Target Effective Date, an amount equal to 0.25% of the applicable Liquidated Damages Multiplier, and (ii) for each non-overlapping 30-day period beginning on the 61st day following the applicable Target Effective Date, an amount equal to
the amount set forth in clause (i) plus an additional 0.25% of the applicable Liquidated Damages Multiplier for each subsequent 60 days (i.e., 0.5% for 61-120 days, 0.75% for 121-180 days, and 1.0% thereafter), up to a maximum amount equal to
1.0% of the applicable Liquidated Damages Multiplier per non-overlapping 30-day period (the “Liquidated Damages”), until such time as such 

  
 7 

 
Registration Statement is declared or becomes effective or there are no longer any Registrable Securities outstanding. The Liquidated Damages shall be payable within 10 Business Days after
the end of each such 30-day period in immediately available funds to the account or accounts specified by the applicable Holders. Any amount of Liquidated Damages shall be prorated for any period of less than 30 days accruing during any period
for which a Holder is entitled to Liquidated Damages hereunder. 
 (c) Waiver of Liquidated Damages. If the Partnership
is unable to cause (i) the PIPE Unit Registration Statement to become effective on or before the applicable Target Effective Date, then the Partnership may request a waiver of the Liquidated Damages with respect thereto, which may be granted by the
consent of the Holders of at least 75% of the PIPE Unit Registrable Securities, in their sole discretion, and which such waiver shall apply to all the Holders of PIPE Unit Registrable Securities included on such Registration Statement or (ii) the
Conversion Unit Registration Statement or the Preferred Unit Registration Statement to become effective on or before the applicable Target Effective Date, then the Partnership may request a waiver of the Liquidated Damages with respect thereto,
which may be granted by the consent of Holders of at least the Registrable Securities Required Voting Percentage, in their sole discretion, and which such waiver shall apply to all the Holders of Registrable Securities included on such Registration
Statement. 
 (d) Delay Rights. Notwithstanding anything to the contrary contained herein, the Partnership may, upon written
notice to any Selling Holder whose Registrable Securities are included in a Registration Statement, suspend such Selling Holder’s use of any prospectus which is a part of such Registration Statement (in which event the Selling Holder shall
suspend sales of the Registrable Securities pursuant to such Registration Statement) if (i) the Partnership is pursuing an acquisition, merger, reorganization, disposition or other similar transaction and the Partnership determines in good faith
that the Partnership’s ability to pursue or consummate such a transaction would be materially and adversely affected by any required disclosure of such transaction in such Registration Statement or (ii) the Partnership has experienced some
other material non-public event, the disclosure of which at such time, in the good faith judgment of the Partnership, would materially and adversely affect the Partnership; provided, however, that in no event shall the Selling Holders
be suspended from selling Registrable Securities pursuant to such Registration Statement for a period that exceeds an aggregate of 60 days in any 180-day period or 90 days in any 365-day period. Upon disclosure of such information or the termination
of the condition described above, the Partnership shall provide prompt notice to the Selling Holders whose Registrable Securities are included in such Registration Statement, and shall promptly terminate any suspension of sales it has put into
effect and shall take such other actions necessary or appropriate to permit registered sales of Registrable Securities as contemplated in this Agreement. 

Section 2.02 Piggyback Registration. 

(a) Participation. If at any time the Partnership proposes to file (i) a Registration Statement (other than a Registration
Statement contemplated by Section 2.01(a)) on behalf of any other Holder, other than DRI or any of its Affiliates, who has registration rights related to an Underwritten Offering undertaken pursuant to Section 2.03
(“Other Holder”), or (ii) a prospectus supplement relating to the sale of Common Units by any Other Holders to an 

  
 8 

 
effective “automatic” registration statement, so long as the Partnership is a WKSI at such time or, whether or not the Partnership is a WKSI, so long as the Common Unit Registrable
Securities were previously included in the underlying shelf Registration Statement or are included on an effective Registration Statement, or in any case in which Holders may participate in such offering without the filing of a post-effective
amendment, in each case, for the sale of Common Units by Other Holders in an Underwritten Offering undertaken pursuant to Section 2.03, then the Partnership shall give not less than four Business Days’ notice (including notification by
electronic mail) (the “Piggyback Notice”) of such proposed Underwritten Offering to each Holder (together with its Affiliates) owning Common Unit Registrable Securities and such Piggyback Notice shall offer such Holder the
opportunity to include in such Underwritten Offering such number of Common Unit Registrable Securities (the “Included Registrable Securities”) as such Holder may request in writing (a “Piggyback
Registration”); provided, however, that the Partnership shall not be required to offer such opportunity (A) to such Holders if the Holders, together with their Affiliates, do not offer a minimum of $25 million of Common
Unit Registrable Securities, in the aggregate (determined by multiplying the number of Common Unit Registrable Securities owned by the Average VWAP for the 10 Trading Days preceding the date of such notice), or such lesser amount if it constitutes
the remaining holdings of the Holder and its Affiliates, or, (B) to such Holders if the Partnership has been advised by the Managing Underwriter that the inclusion of Common Unit Registrable Securities for sale for the benefit of such Holders will
have an adverse effect on the price, timing or distribution of the Common Units in such Underwritten Offering, in which case the amount of Common Unit Registrable Securities to be offered for the accounts of Holders shall be determined based on the
provisions of Section 2.02(b). Each Piggyback Notice shall be provided to Holders on a Business Day pursuant to Section 3.01 and receipt of such notice shall be confirmed and kept confidential by the Holders until either (x)
such proposed Underwritten Offering has been publicly announced by the Partnership or (y) the Holders have received notice from the Partnership that such proposed Underwritten Offering has been abandoned, which the Partnership shall provide to the
Holders reasonably promptly after the final decision to abandon a proposed Underwritten Offering has been made. Each such Holder will have four Business Days (or two Business Days in connection with any overnight or bought Underwritten Offering)
after such Piggyback Notice has been delivered to request in writing to the Partnership the inclusion of Common Unit Registrable Securities in the Underwritten Offering. If no request for inclusion from a Holder is received by the Partnership within
the specified time, such Holder shall have no further right to participate in such Underwritten Offering. If, at any time after giving written notice of the Partnership’s intention to undertake an Underwritten Offering and prior to the pricing
of such Underwritten Offering, such Underwritten Offering is terminated or delayed pursuant to the provisions of this Agreement, the Partnership may, at its election, give written notice of such determination to the Selling Holders and, (1) in the
case of a termination of such Underwritten Offering, shall be relieved of its obligation to sell any Included Registrable Securities in connection with such terminated Underwritten Offering, and (2) in the case of a determination to delay such
Underwritten Offering, shall be permitted to delay offering any Included Registrable Securities for the same period as the delay in the Underwritten Offering. Any Selling Holder shall have the right to withdraw such Selling Holder’s request for
inclusion of such Selling Holder’s Common Unit Registrable Securities in such Underwritten Offering by giving written notice to the Partnership of such withdrawal at least one Business Day prior to the time of pricing of such Underwritten
Offering. Any Holder may deliver written notice (a “Piggyback  

  
 9 

 
Opt-Out Notice”) to the Partnership requesting that such Holder not receive notice from the Partnership of any proposed Underwritten Offering; provided, however,
that such Holder may later revoke any such Piggyback Opt-Out Notice in writing. Following receipt of a Piggyback Opt-Out Notice from a Holder (unless subsequently revoked), the Partnership shall not be required to deliver any notice to such Holder
pursuant to this Section 2.02(a) and such Holder shall no longer be entitled to participate in Underwritten Offerings pursuant to this Section 2.02(a), unless such Piggyback Opt-Out Notice is revoked by such Holder. The
Holders listed on Schedule B shall each be deemed to have delivered a Piggyback Opt-Out Notice as of the date hereof. 
 (b)
Priority of Piggyback Registration. If the Managing Underwriter or Underwriters of any proposed Underwritten Offering for Other Holders advise the Partnership that the total amount of Common Unit Registrable Securities that Holders
intend to include in such offering exceeds the number that can be sold in such offering without being likely to have an adverse effect on the price, timing or distribution of the Common Units offered or the market for the Common Units, then the
Partnership shall include the number of Common Units that such Managing Underwriter or Underwriters advise the Partnership can be sold without having such adverse effect, with such number to be allocated (i) first, to the Common Units requested to
be included therein by the Initiating Holder and (ii) second, pro rata among the Holders who are exercising piggyback registration rights pursuant to this Section 2.02 related to such offering (based, for each such Holder, on the
percentage derived by dividing (x) the number of Common Units proposed to be sold by such Holder in such Underwritten Offering by (y) the aggregate number of Common Units proposed to be sold by all Holders in such Underwritten Offering). 

Section 2.03 Underwritten Offering. 

(a) Purchaser Demand Rights. If Stonepeak, First Reserve or any of their respective Affiliates elect to dispose of Common
Unit Registrable Securities under a Registration Statement pursuant to an Underwritten Offering and either (i) reasonably expect gross proceeds of at least $100 million from such Underwritten Offering (together with any Common Unit Registrable
Securities to be disposed of by a Selling Holder who has elected to participate in such Underwritten Offering pursuant to Section 2.02) or (ii) reasonably expect gross proceeds of at least $50 million from such Underwritten Offering
(together with any Common Unit Registrable Securities to be disposed of by a Selling Holder who has elected to participate in such Underwritten Offering pursuant to Section 2.02) and such Common Unit Registrable Securities represent 100%
of the then-outstanding Common Unit Registrable Securities held by the applicable Selling Holder and its affiliates, the Partnership shall, at the written request of such Selling Holder(s), enter into an underwriting agreement in a form as is
customary in Underwritten Offerings of securities by the Partnership with the Managing Underwriter or Underwriters selected by the Partnership, which shall include, among other provisions, indemnities to the effect and to the extent provided in
Section 2.08, and shall take all such other reasonable actions as are requested by the Managing Underwriter or Underwriters in order to expedite or facilitate the disposition of such Common Unit Registrable Securities; provided,
however, that the Partnership shall have no obligation to facilitate or participate in, including entering into any underwriting agreement for more than (i) two Underwritten Offerings requested by Stonepeak or any of or its Affiliates (which
shall never occur within 365 days of each other) and (ii) one Underwritten Offering requested by First Reserve or any of its Affiliates (which 

  
 10 

 
shall never occur within 365 days of any other Underwritten Offering requested hereunder); provided, further, that if the Partnership, DRI or any of their respective Affiliates
is conducting or actively pursuing a securities offering of the Partnership’s Common Units with anticipated gross offering proceeds of at least $100 million (other than in connection with any at-the-market offering or similar continuous
offering program), then the Partnership may suspend such Selling Holder’s right to require the Partnership to conduct an Underwritten Offering on such Selling Holder’s behalf pursuant to this Section 2.03; provided,
however, that the Partnership may only suspend such Selling Holder’s right to require the Partnership to conduct an Underwritten Offering pursuant to this Section 2.03 once in any six-month period and in no event for a period
that exceeds an aggregate of 60 days in any 180-day period or 90 days in any 365-day period. 
 (b) General Procedures. In
connection with any Underwritten Offering contemplated by Section 2.02 or Section 2.03(a), the underwriting agreement into which each Selling Holder and the Partnership shall enter shall contain such representations,
covenants, indemnities (subject to Section 2.08) and other rights and obligations as are customary in Underwritten Offerings of securities by the Partnership. No Selling Holder shall be required to make any representations or warranties to or
agreements with the Partnership or the Underwriters other than representations, warranties or agreements regarding such Selling Holder’s authority to enter into such underwriting agreement and to sell, and its ownership of, the securities being
registered on its behalf, its intended method of distribution and any other representation required by law. If any Selling Holder disapproves of the terms of an Underwritten Offering contemplated by this Section 2.03, such Selling Holder may
elect to withdraw therefrom by notice to the Partnership and the Managing Underwriter; provided, however, that such withdrawal must be made at least one Business Day prior to the time of pricing of such Underwritten Offering to be
effective; provided, further, that in the event the Managing Underwriter or Underwriters of any proposed Underwritten Offering advise the Partnership that the total amount of Common Unit Registrable Securities that Holders intend to
include in such offering exceeds the number that can be sold in such offering without being likely to have an adverse effect on the price, timing or distribution of the Common Unit Registrable Securities offered or the market for the Common Units,
and the amount of Common Unit Registrable Securities requested to be included in such Underwritten Offering by the Holder that initiated such Underwritten Offering pursuant to Section 2.03(a) (the “Initiating Holder”)
is reduced by 50% or more, the Initiating Holder will have the right to withdraw from such Underwritten Offering by delivering notice to the Partnership at least one Business Day prior to the time of pricing of such Underwritten Offering, in which
case the Partnership will have no obligation to proceed with such Underwritten Offering and such Underwritten Offering, whether or not completed, will not decrease the number of Underwritten Offerings the Initiating Holder shall have the right and
option to request under this Section 2.03. No such withdrawal or abandonment shall affect the Partnership’s obligation to pay Registration Expenses. 

Section 2.04 Further Obligations. In connection with its obligations under this Article II, the
Partnership will: 
 (a) promptly prepare and file with the Commission such amendments and supplements to a Registration Statement and the
prospectus used in connection therewith as may be necessary to keep such Registration Statement effective for the Effectiveness Period and as may be necessary to comply with the provisions of the Securities Act with respect to the disposition of all
Registrable Securities covered by such Registration Statement; 

  
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 (b) if a prospectus supplement will be used in connection with the marketing of an Underwritten
Offering under a Registration Statement and the Managing Underwriter at any time shall notify the Partnership in writing that, in the sole judgment of such Managing Underwriter, inclusion of detailed information to be used in such prospectus
supplement is of material importance to the success of such Underwritten Offering, the Partnership shall use its commercially reasonable efforts to include such information in such prospectus supplement; 

(c) furnish to each Selling Holder (i) as far in advance as reasonably practicable before filing a Registration Statement or any other
registration statement contemplated by this Agreement or any supplement or amendment thereto, upon request, copies of reasonably complete drafts of all such documents proposed to be filed (including exhibits and each document incorporated by
reference therein to the extent then required by the rules and regulations of the Commission), and provide each such Selling Holder the opportunity to object to any information pertaining to such Selling Holder and its plan of distribution that is
contained therein and, to the extent timely received, make the corrections reasonably requested by such Selling Holder with respect to such information prior to filing such Registration Statement or such other registration statement and the
prospectus included therein or any supplement or amendment thereto, and (ii) such number of copies of such Registration Statement or such other registration statement and the prospectus included therein and any supplements and amendments thereto as
such Persons may reasonably request in order to facilitate the resale or other disposition of the Registrable Securities covered by such Registration Statement or other registration statement; 

(d) if applicable, use its commercially reasonable efforts to promptly register or qualify the Registrable Securities covered by any
Registration Statement or any other registration statement contemplated by this Agreement under the securities or blue sky laws of such jurisdictions as the Selling Holders or, in the case of an Underwritten Offering, the Managing Underwriter, shall
reasonably request; provided, however, that the Partnership will not be required to qualify generally to transact business in any jurisdiction where it is not then required to so qualify or to take any action that would subject it to
general service of process in any such jurisdiction where it is not then so subject; 
 (e) promptly notify each Selling Holder, at any time
when a prospectus relating thereto is required to be delivered by any of them under the Securities Act, of (i) the filing of a Registration Statement or any other registration statement contemplated by this Agreement or any prospectus or prospectus
supplement to be used in connection therewith, or any amendment or supplement thereto, and, with respect to a Registration Statement or any other registration statement or any post-effective amendment thereto, when the same has become effective; and
(ii) the receipt of any written comments from the Commission with respect to any filing referred to in clause (i) and any written request by the Commission for amendments or supplements to any such Registration Statement or any other registration
statement or any prospectus or prospectus supplement thereto; 

  
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 (f) promptly notify each Selling Holder, at any time when a prospectus relating thereto is
required to be delivered by any of them under the Securities Act, of (i) the happening of any event as a result of which the prospectus or prospectus supplement contained in a Registration Statement or any other registration statement contemplated
by this Agreement, as then in effect, includes an untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading (in the case of any prospectus
contained therein, in the light of the circumstances under which a statement is made); (ii) the issuance or express threat of issuance by the Commission of any stop order suspending the effectiveness of a Registration Statement or any other
registration statement contemplated by this Agreement, or the initiation of any proceedings for that purpose; or (iii) the receipt by the Partnership of any notification with respect to the suspension of the qualification of any Registrable
Securities for sale under the applicable securities or blue sky laws of any jurisdiction. Following the provision of such notice, the Partnership agrees to, as promptly as practicable, amend or supplement the prospectus or prospectus supplement or
take other appropriate action so that the prospectus or prospectus supplement does not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not
misleading in the light of the circumstances then existing and to take such other action as is reasonably necessary to remove a stop order, suspension, threat thereof or proceedings related thereto; 

(g) upon request and subject to appropriate confidentiality obligations, furnish to each Selling Holder copies of any and all transmittal
letters or other correspondence with the Commission or any other governmental agency or self-regulatory body or other body having jurisdiction (including any domestic or foreign securities exchange) relating to such offering of Registrable
Securities; 
 (h) in the case of an Underwritten Offering, furnish, or use its reasonable efforts to cause to be furnished, upon request,
(i) an opinion of counsel for the Partnership addressed to the Underwriters, dated the date of the closing under the applicable underwriting agreement and (ii) a “comfort letter” addressed to the Underwriters, dated the pricing date of
such Underwritten Offering and a letter of like kind dated the date of the closing under the applicable underwriting agreement, in each case, signed by the independent public accountants who have certified the Partnership’s financial statements
included or incorporated by reference into the applicable registration statement, and each of the opinion and the “comfort letter” shall be in customary form and covering substantially the same matters with respect to such registration
statement (and the prospectus and any prospectus supplement) as have been customarily covered in opinions of issuer’s counsel and in accountants’ letters delivered to the Underwriters in Underwritten Offerings of securities by the
Partnership and such other matters as such Underwriters may reasonably request; 
 (i) otherwise use its commercially reasonable efforts to
comply with all applicable rules and regulations of the Commission; 
 (j) make available to the appropriate representatives of the Managing
Underwriter during normal business hours access to such information and Partnership personnel as is reasonable and customary to enable such parties to establish a due diligence defense under the Securities Act; provided, however, that
the Partnership need not disclose any non-public information to any such representative unless and until such representative has entered into a confidentiality agreement with the Partnership; 

  
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 (k) use its commercially reasonable efforts to cause all Common Unit Registrable Securities
registered pursuant to this Agreement to be listed on each securities exchange or nationally recognized quotation system on which similar securities issued by the Partnership are then listed; 

(l) use its commercially reasonable efforts to cause Registrable Securities to be registered with or approved by such other governmental
agencies or authorities as may be necessary by virtue of the business and operations of the Partnership to enable the Selling Holders to consummate the disposition of such Registrable Securities; 

(m) provide a transfer agent, which may be the General Partner or one of its Affiliates as provided in the Partnership Agreement, and
registrar for all Registrable Securities covered by any Registration Statement not later than the Effective Date of such Registration Statement; 

(n) enter into customary agreements and take such other actions as are reasonably requested by the Selling Holders or the Underwriters, if
any, in order to expedite or facilitate the disposition of Common Unit Registrable Securities (including making appropriate officers of the General Partner available to participate in customary marketing activities); provided, however,
that the officers of the General Partner shall not be required to dedicate an unreasonably burdensome amount of time in connection with any roadshow and related marketing activities for any Underwritten Offering; 

(o) if reasonably requested by a Selling Holder, (i) incorporate in a prospectus supplement or post-effective amendment such information as
such Selling Holder reasonably requests to be included therein relating to the sale and distribution of Registrable Securities, including information with respect to the number of Registrable Securities being offered or sold, the purchase price
being paid therefor and any other terms of the offering of the Registrable Securities to be sold in such offering; and (ii) make all required filings of such prospectus supplement or post-effective amendment after being notified of the matters to be
incorporated in such prospectus supplement or post-effective amendment; 
 (p) if reasonably required by the Partnership’s transfer
agent, the Partnership shall promptly deliver any authorizations, certificates and directions required by the transfer agent which authorize and direct the transfer agent to transfer Registrable Securities without legend upon sale by the Holder of
such Registrable Securities under a Registration Statement; and 
 (q) if any Holder could reasonably be deemed to be an
“underwriter,” as defined in Section 2(a)(11) of the Securities Act, in connection with a Registration Statement and any amendment or supplement thereof (a “Holder Underwriter Registration Statement”), then the
Partnership will reasonably cooperate with such Holder in allowing such Holder to conduct customary “underwriter’s due diligence” with respect to the Partnership and satisfy its obligations in respect thereof. In addition, at any
Holder’s request, the Partnership will furnish to 

  
 14 

 
such Holder, on the date of the effectiveness of the Holder Underwriter Registration Statement and thereafter from time to time on such dates as such Holder may reasonably request (provided that
such request shall not be more frequently than on an annual basis unless such Holder is offering Registrable Securities pursuant to a Holder Underwriter Registration Statement), (i) a “comfort letter”, dated such date, from the
Partnership’s independent certified public accountants in form and substance as has been customarily given by independent certified public accountants to underwriters in Underwritten Offerings of securities by the Partnership, addressed to such
Holder, (ii) an opinion, dated as of such date, of counsel representing the Partnership for purposes of the Holder Underwriter Registration Statement, in form, scope and substance as has been customarily given in Underwritten Offerings of securities
by the Partnership, accompanied by standard “10b-5” negative assurance for such offerings, addressed to such Holder and (iii) a standard officer’s certificate from the chief executive officer or chief financial officer, or other
officers serving such functions, of the General Partner addressed to the Holder, as has been customarily given by such officers in Underwritten Offerings of securities by the Partnership. The Partnership will also use its reasonable efforts to
provide legal counsel to such Holder with an opportunity to review and comment upon any such Holder Underwriter Registration Statement, and any amendments and supplements thereto, prior to its filing with the Commission. 

Notwithstanding anything to the contrary in this Section 2.04, the Partnership will not name a Holder as an underwriter (as defined in
Section 2(a)(11) of the Securities Act) in any Registration Statement or Holder Underwriter Registration Statement, as applicable, without such Holder’s consent. If the staff of the Commission requires the Partnership to name any Holder as an
underwriter (as defined in Section 2(a)(11) of the Securities Act), and such Holder does not consent thereto, then such Holder’s Registrable Securities shall not be included on the applicable Registration Statement, and the Partnership shall
have no further obligations hereunder with respect to Registrable Securities held by such Holder, unless such Holder has not had an opportunity to conduct customary underwriter’s due diligence as set forth in subsection (q) of this
Section 2.04 with respect to the Partnership at the time such Holder’s consent is sought. 
 Each Selling Holder, upon
receipt of notice from the Partnership of the happening of any event of the kind described in subsection (f) of this Section 2.04, shall forthwith discontinue offers and sales of the Registrable Securities by means of a
prospectus or prospectus supplement until such Selling Holder’s receipt of the copies of the supplemented or amended prospectus contemplated by subsection (f) of this Section 2.04 or until it is advised in writing by the
Partnership that the use of the prospectus may be resumed and has received copies of any additional or supplemental filings incorporated by reference in the prospectus, and, if so directed by the Partnership, such Selling Holder will, or will
request the Managing Underwriter or Managing Underwriters, if any, to deliver to the Partnership (at the Partnership’s expense) all copies in their possession or control, other than permanent file copies then in such Selling Holder’s
possession, of the prospectus covering such Registrable Securities current at the time of receipt of such notice. 
 Section 2.05
Cooperation by Holders. The Partnership shall have no obligation to include Registrable Securities of a Holder in a Registration Statement or in an Underwritten Offering pursuant to Section 2.03(a) if such Holder has failed to
timely furnish such information 

  
 15 

 
that the Partnership determines, after consultation with its counsel, is reasonably required in order for any registration statement or prospectus supplement, as applicable, to comply with the
Securities Act. 
 Section 2.06 Restrictions on Public Sale by Holders of Registrable Securities. Each Holder of Common Unit
Registrable Securities who is participating in an Underwritten Offering and is included in a Registration Statement agrees to enter into a customary letter agreement with underwriters providing that such Holder will not effect any public sale or
distribution of Common Unit Registrable Securities during the 45 calendar day period beginning on the date of a prospectus or prospectus supplement filed with the Commission with respect to the pricing of such Underwritten Offering; provided,
however, that, notwithstanding the foregoing, (i) the duration of the foregoing restrictions shall be no longer than the duration of the shortest restriction imposed by the Underwriters on the Partnership or the officers, directors or any
other Affiliate of the Partnership on whom a restriction is imposed and (ii) the restrictions set forth in this Section 2.06 shall not apply to any Common Unit Registrable Securities that are included in such Underwritten Offering by
such Holder. 
 Section 2.07 Expenses. 

(a) Certain Definitions. “Registration Expenses” shall not include Selling Expenses but otherwise means
all expenses incident to the Partnership’s performance under or compliance with this Agreement to effect the Registration of Registrable Securities on a Registration Statement pursuant to Section 2.01, a Piggyback Registration pursuant
to Section 2.02, or an Underwritten Offering pursuant to Section 2.03, and the disposition of such Registrable Securities, including all registration, filing, securities exchange listing and National Securities Exchange fees,
all registration, filing, qualification and other fees and expenses of complying with securities or blue sky laws, fees of the Financial Industry Regulatory Authority, fees of transfer agents and registrars, all word processing, duplicating and
printing expenses, and the fees and disbursements of counsel and independent public accountants for the Partnership, including the expenses of any special audits or “cold comfort” letters required by or incident to such performance and
compliance. “Selling Expenses” means all underwriting fees, discounts and selling commissions and transfer taxes allocable to the sale of the Registrable Securities, plus any costs or expenses related to any roadshows
conducted in connection with the marketing of any Underwritten Offering. 
 (b) Expenses. The Partnership will pay all
reasonable Registration Expenses, as determined in good faith, in connection with a shelf Registration, a Piggyback Registration or an Underwritten Offering, whether or not any sale is made pursuant to such shelf Registration, Piggyback Registration
or Underwritten Offering. Each Selling Holder shall pay its pro rata share of all Selling Expenses in connection with any sale of its Registrable Securities hereunder. In addition, except as otherwise provided in Section 2.08, the
Partnership shall not be responsible for professional fees (including legal fees) incurred by Holders in connection with the exercise of such Holders’ rights hereunder. 

  
 16 

 Section 2.08 Indemnification. 

(a) By the Partnership. In the event of a Registration of any Registrable Securities under the Securities Act pursuant to this
Agreement, the Partnership will indemnify and hold harmless each Selling Holder thereunder, its directors, officers, managers, partners, employees and agents and each Person, if any, who controls such Selling Holder within the meaning of the
Securities Act and the Exchange Act, and its directors, officers, managers, partners, employees or agents (collectively, the “Selling Holder Indemnified Persons”), against any losses, claims, damages, expenses or
liabilities (including reasonable attorneys’ fees and expenses) (collectively, “Losses”), joint or several, to which such Selling Holder Indemnified Person may become subject under the Securities Act, the Exchange Act or
otherwise, insofar as such Losses (or actions or proceedings, whether commenced or threatened, in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact (in the case of any prospectus,
in light of the circumstances under which such statement is made) contained in (which, for the avoidance of doubt, includes documents incorporated by reference in) the applicable Registration Statement or other registration statement contemplated by
this Agreement, any preliminary prospectus, prospectus supplement or final prospectus contained therein, or any amendment or supplement thereof, or any free writing prospectus relating thereto, or arise out of or are based upon the omission or
alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading, and will reimburse
each such Selling Holder Indemnified Person for any legal or other expenses reasonably incurred by them in connection with investigating, defending or resolving any such Loss or actions or proceedings; provided, however, that the Partnership
will not be liable in any such case if and to the extent that any such Loss arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission so made in conformity with information furnished by such
Selling Holder Indemnified Person in writing specifically for use in the applicable Registration Statement or other registration statement, or prospectus supplement, as applicable. Such indemnity shall remain in full force and effect regardless of
any investigation made by or on behalf of such Selling Holder Indemnified Person, and shall survive the transfer of such securities by such Selling Holder. 

(b) By Each Selling Holder. Each Selling Holder agrees severally and not jointly to indemnify and hold harmless the Partnership,
the General Partner and the General Partner’s directors, officers, employees and agents and each Person, who, directly or indirectly, controls the Partnership within the meaning of the Securities Act or of the Exchange Act to the same extent as
the foregoing indemnity from the Partnership to the Selling Holders, but only with respect to information regarding such Selling Holder furnished in writing by or on behalf of such Selling Holder expressly for inclusion in a Registration Statement
or any other registration statement contemplated by this Agreement, any preliminary prospectus, prospectus supplement or final prospectus contained therein, or any amendment or supplement thereto or any free writing prospectus relating thereto;
provided, however, that the liability of each Selling Holder shall not be greater in amount than the dollar amount of the proceeds (net of any Selling Expenses) received by such Selling Holder from the sale of the Registrable Securities
giving rise to such indemnification. 

  
 17 

 (c) Notice. Promptly after receipt by an indemnified party hereunder of notice of
the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against the indemnifying party hereunder, notify the indemnifying party in writing thereof, but the omission to so notify the indemnifying
party shall not relieve it from any liability that it may have to any indemnified party other than under this Section 2.08(c), except to the extent that the indemnifying party is materially prejudiced by such failure. In any action
brought against any indemnified party, it shall notify the indemnifying party of the commencement thereof. The indemnifying party shall be entitled to participate in and, to the extent it shall wish, to assume and undertake the defense thereof with
counsel reasonably satisfactory to such indemnified party and, after notice from the indemnifying party to such indemnified party of its election so to assume and undertake the defense thereof, the indemnifying party shall not be liable to such
indemnified party under this Section 2.08 for any legal expenses subsequently incurred by such indemnified party in connection with the defense thereof other than reasonable costs of investigation and of liaison with counsel so selected;
provided, however, that, (i) if the indemnifying party has failed to assume the defense or employ counsel reasonably satisfactory to the indemnified party or (ii) if the defendants in any such action include both the indemnified party
and the indemnifying party and counsel to the indemnified party shall have concluded that there may be reasonable defenses available to the indemnified party that are different from or additional to those available to the indemnifying party, or if
the interests of the indemnified party reasonably may be deemed to conflict with the interests of the indemnifying party, then the indemnified party shall have the right to select a separate counsel and to assume such legal defense and otherwise to
participate in the defense of such action, with the reasonable expenses and fees of such separate counsel and other reasonable expenses related to such participation to be reimbursed by the indemnifying party as incurred. Notwithstanding any other
provision of this Agreement, no indemnifying party shall settle any action brought against any indemnified party with respect to which such indemnified party may be entitled to indemnification hereunder without the consent of the indemnified party,
unless the settlement thereof imposes no liability or obligation on, includes a complete and unconditional release from liability of, and does not contain any admission of wrongdoing by, the indemnified party. 

(d) Contribution. If the indemnification provided for in this Section 2.08 is held by a court or government agency
of competent jurisdiction to be unavailable to any indemnified party or is insufficient to hold them harmless in respect of any Losses, then each such indemnifying party, in lieu of indemnifying such indemnified party, shall contribute to the amount
paid or payable by such indemnified party as a result of such Losses in such proportion as is appropriate to reflect the relative fault of the indemnifying party, on the one hand, and of the indemnified party, on the other hand, in connection with
the statements or omissions that resulted in such Losses, as well as any other relevant equitable considerations; provided, however, that in no event shall any Selling Holder be required to contribute an aggregate amount in excess of
the dollar amount of proceeds (net of Selling Expenses) received by such Selling Holder from the sale of Registrable Securities giving rise to such indemnification. The relative fault of the indemnifying party, on the one hand, and the indemnified
party, on the other, shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact has been made by, or relates to, information
supplied by such party, and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The parties hereto agree that it would not be just and equitable if contributions
pursuant to this 

  
 18 

 
paragraph were to be determined by pro rata allocation or by any other method of allocation that does not take account of the equitable considerations referred to herein. The amount paid by an
indemnified party as a result of the Losses referred to in the first sentence of this paragraph shall be deemed to include any legal and other expenses reasonably incurred by such indemnified party in connection with investigating, defending or
resolving any Loss that is the subject of this paragraph. No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who is not guilty of such
fraudulent misrepresentation. 
 (e) Other Indemnification. The provisions of this Section 2.08 shall be in
addition to any other rights to indemnification or contribution that an indemnified party may have pursuant to law, equity, contract or otherwise. 

Section 2.09 Rule 144 Reporting. With a view to making available the benefits of certain rules and regulations of the Commission
that may permit the resale of the Registrable Securities without registration, the Partnership agrees to use its commercially reasonable efforts to: 

(a) make and keep public information regarding the Partnership available, as those terms are understood and defined in Rule 144 under the
Securities Act (or any similar provision then in effect), at all times from and after the date hereof; 
 (b) file with the Commission in a
timely manner all reports and other documents required of the Partnership under the Securities Act and the Exchange Act at all times from and after the date hereof; and 

(c) so long as a Holder owns any Registrable Securities, furnish (i) to the extent accurate, forthwith upon request, a written statement of
the Partnership that it has complied with the reporting requirements of Rule 144 under the Securities Act (or any similar provision then in effect) and (ii) unless otherwise available via the Commission’s EDGAR filing system, to such Holder
forthwith upon request a copy of the most recent annual or quarterly report of the Partnership, and such other reports and documents so filed as such Holder may reasonably request in availing itself of any rule or regulation of the Commission
allowing such Holder to sell any such securities without registration. 
 Section 2.10 Transfer or Assignment of Registration
Rights. The rights to cause the Partnership to register Registrable Securities under this Article II may be transferred or assigned by each Holder to one or more transferees or assignees of Registrable Securities; provided,
however, that (a) unless any such transferee or assignee is an Affiliate of, and after such transfer or assignment continues to be an Affiliate of, such Holder, the amount of Registrable Securities transferred or assigned to such transferee
or assignee shall represent at least $50 million of Registrable Securities (on an as-converted basis where applicable (determined by multiplying the number of Registrable Securities (on an as-converted basis) owned by the Average VWAP for the 10
Trading Days preceding the date of such transfer or assignment)), or such lesser amount if it constitutes the remaining holdings of the Holder and its Affiliates, (b) the Partnership is given written notice prior to any said transfer or assignment,
stating the name and address of each such transferee or assignee and identifying the securities with respect to which such registration rights are being transferred or assigned and (c) each such transferee or assignee assumes in writing
responsibility for its portion of the obligations of such transferring Holder under this Agreement. 

  
 19 

 Section 2.11 Limitation on Subsequent Registration Rights. From and after the date
hereof, the Partnership shall not, without the prior written consent of the Holders of at least the Registrable Securities Required Voting Percentage, enter into any agreement with any current or future holder of any securities of the Partnership
that would allow such current or future holder to require the Partnership to include securities in any registration statement filed by the Partnership for Other Holders on a basis other than pari passu with, or expressly subordinate to, the
piggyback rights of the Holders of Common Unit Registrable Securities hereunder; provided, that in no event shall the Partnership enter into any agreement that would permit another holder of securities of the Partnership to participate on a
pari passu basis (in terms of priority of cut-back based on advice of underwriters) with a Purchaser requesting registration or takedown in an Underwritten Offering pursuant to Section 2.03(a). 

Section 2.12 Limitation on Obligations for Series A Preferred Unit Registrable Securities. Notwithstanding anything to the
contrary in this Agreement, nothing contained herein shall be construed to require the Partnership to (a) conduct an underwritten offering for the public sale, resale or any other disposition of Series A Preferred Unit Registrable Securities, (b)
except as expressly provided in this Agreement, otherwise assist in the public resale of any Series A Preferred Unit Registrable Securities, (c) provide any Holder of Series A Preferred Unit Registrable Securities any rights to include any Series A
Preferred Unit Registrable Securities in any underwritten offering relating to the sale by the Partnership or any other Person of any securities of the Partnership or (d) cause any Series A Preferred Unit Registrable Securities to be listed on any
securities exchange or nationally recognized quotation system. 
 ARTICLE III. 

MISCELLANEOUS 
 Section
3.01 Communications. All notices, demands and other communications provided for hereunder shall be in writing and shall be given by registered or certified mail, return receipt requested, telecopy, air courier guaranteeing overnight
delivery, personal delivery or (in the case of any notice given by the Partnership to the Purchasers) email to the following addresses: 
  

	 	(a)	If to the Purchasers, to the addresses set forth on Schedule A. 

  

	 	(b)	If to the Partnership: 

 Dominion Midstream Partners, LP 

120 Tredegar Street 
 Richmond,
Virginia 23219 
 Attention: Treasurer 

Facsimile: (804) 819-2638 

Email: james.r.chapman@dom.com 

  
 20 

 with a copy to (which shall not constitute notice): 

Vinson & Elkins L.L.P. 

1001 Fannin Street 
 Suite 2500

 Houston TX 77002-6760 

Attention: David Oelman 

Facsimile: (713) 615-5620 

Email: doelman@velaw.com 
 or to such other
address as the Partnership or the Purchasers may designate to each other in writing from time to time or, if to a transferee or assignee of the Purchasers or any transferee or assignee thereof, to such transferee or assignee at the address provided
pursuant to Section 2.10. All notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; upon actual receipt if sent by certified or registered mail, return receipt requested,
or regular mail, if mailed; upon actual receipt of the facsimile or email copy, if sent via facsimile or email; and upon actual receipt when delivered to an air courier guaranteeing overnight delivery. 

Section 3.02 Binding Effect. This Agreement shall be binding upon the Partnership, each of the Purchasers and their respective
successors and permitted assigns, including subsequent Holders of Registrable Securities to the extent permitted herein. Except as expressly provided in this Agreement, this Agreement shall not be construed so as to confer any right or benefit upon
any Person other than the parties to this Agreement and their respective successors and permitted assigns. 
 Section 3.03 Assignment
of Rights. Except as provided in Section 2.10, neither this Agreement nor any of the rights, benefits or obligations hereunder may be assigned or transferred, by operation of law or otherwise, by any party hereto without the prior
written consent of the other party. 
 Section 3.04 Recapitalization, Exchanges, Etc. Affecting Units. The provisions of this
Agreement shall apply to the full extent set forth herein with respect to any and all units of the Partnership or any successor or assign of the Partnership (whether by merger, acquisition, consolidation, reorganization, sale of assets or otherwise)
that may be issued in respect of, in exchange for or in substitution of, the Registrable Securities, and shall be appropriately adjusted for combinations, unit splits, recapitalizations, pro rata distributions of units and the like occurring after
the date of this Agreement. 
 Section 3.05 Aggregation of Registrable Securities. All Registrable Securities held or acquired
by Persons who are Affiliates of one another shall be aggregated together for the purpose of determining the availability of any rights under this Agreement. 

Section 3.06 Specific Performance. Damages in the event of breach of this Agreement by a party hereto may be difficult, if not
impossible, to ascertain, and it is therefore agreed that each such Person, in addition to and without limiting any other remedy or right it may have, will have the right to seek an injunction or other equitable relief in any court of competent
jurisdiction, enjoining any such breach, and enforcing specifically the terms and provisions hereof, and each of the parties hereto hereby waives any and all defenses it may have on the 

  
 21 

 
ground of lack of jurisdiction or competence of the court to grant such an injunction or other equitable relief. The existence of this right will not preclude any such Person from pursuing any
other rights and remedies at law or in equity that such Person may have. 
 Section 3.07 Counterparts. This Agreement may be
executed in any number of counterparts and by different parties hereto in separate counterparts, each of which counterparts, when so executed and delivered, shall be deemed to be an original and all of which counterparts, taken together, shall
constitute but one and the same agreement. 
 Section 3.08 Governing Law, Submission to Jurisdiction. This Agreement, and all
claims or causes of action (whether in contract or tort) that may be based upon, arise out of or relate to this Agreement or the negotiation, execution or performance of this Agreement (including any claim or cause of action based upon, arising out
of or related to any representation or warranty made in or in connection with this Agreement), will be construed in accordance with and governed by the laws of the State of Delaware without regard to principles of conflicts of laws. Any action
against any party relating to the foregoing shall be brought in any federal or state court of competent jurisdiction located within the State of Delaware, and the parties hereto hereby irrevocably submit to the non-exclusive jurisdiction of any
federal or state court located within the State of Delaware over any such action. The parties hereby irrevocably waive, to the fullest extent permitted by applicable law, any objection which they may now or hereafter have to the laying of venue of
any such dispute brought in such court or any defense of inconvenient forum for the maintenance of such dispute. Each of the parties hereto agrees that a judgment in any such dispute may be enforced in other jurisdictions by suit on the judgment or
in any other manner provided by law. 
 Section 3.09 Waiver of Jury Trial. THE PARTIES TO THIS AGREEMENT EACH HEREBY WAIVE,
AND AGREE TO CAUSE THEIR AFFILIATES TO WAIVE, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (A) ARISING UNDER THIS AGREEMENT OR (B) IN ANY WAY CONNECTED WITH OR RELATED OR
INCIDENTAL TO THE DEALINGS OF THE PARTIES HERETO IN RESPECT OF THIS AGREEMENT OR ANY OF THE TRANSACTIONS RELATED HERETO, IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER IN CONTRACT, TORT, EQUITY OR OTHERWISE. THE PARTIES TO THIS
AGREEMENT EACH HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY AND THAT THE PARTIES TO THIS AGREEMENT MAY FILE AN ORIGINAL COUNTERPART OF A COPY OF THIS AGREEMENT WITH
ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE PARTIES HERETO TO THE WAIVER OF THEIR RIGHT TO TRIAL BY JURY. 
 Section 3.10
Entire Agreement. This Agreement, the Purchase Agreement and the other agreements and documents referred to herein and therein are intended by the parties as a final expression of their agreement and intended to be a complete and
exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein and therein. There are no restrictions, promises, warranties or undertakings, other than those set forth or referred to
herein or in the Purchase Agreement with respect to the rights 

  
 22 

 
granted by the Partnership or any of its Affiliates or the Purchasers or any of their respective Affiliates set forth herein or therein. This Agreement, the Purchase Agreement and the other
agreements and documents referred to herein or therein supersede all prior agreements and understandings between the parties with respect to such subject matter. 

Section 3.11 Amendment. This Agreement may be amended only by means of a written amendment signed by the Partnership and the
Holders of at least the Registrable Securities Required Voting Percentage; provided, however, that no such amendment shall adversely affect the rights of any Holder hereunder without the consent of such Holder. Any amendment,
supplement or modification of or to any provision of this Agreement, any waiver of any provision of this Agreement, and any consent to any departure by the Partnership or any Holder from the terms of any provision of this Agreement shall be
effective only in the specific instance and for the specific purpose for which such amendment, supplement, modification, waiver or consent has been made or given. 

Section 3.12 No Presumption. This Agreement has been reviewed and negotiated by sophisticated parties with access to legal
counsel and shall not be construed against the drafter. 
 Section 3.13 Obligations Limited to Parties to Agreement. Each of
the parties hereto covenants, agrees and acknowledges that, other than as set forth herein, no Person other than the Purchasers, the Holders, their respective permitted assignees and the Partnership shall have any obligation hereunder and that,
notwithstanding that one or more of such Persons may be a corporation, partnership or limited liability company, no recourse under this Agreement or under any documents or instruments delivered in connection herewith shall be had against any former,
current or future director, officer, employee, agent, general or limited partner, manager, member, stockholder or Affiliate of any of such Persons or their respective permitted assignees, or any former, current or future director, officer, employee,
agent, general or limited partner, manager, member, stockholder or Affiliate of any of the foregoing, whether by the enforcement of any assessment or by any legal or equitable proceeding, or by virtue of any applicable law, it being expressly agreed
and acknowledged that no personal liability whatsoever shall attach to, be imposed on or otherwise be incurred by any former, current or future director, officer, employee, agent, general or limited partner, manager, member, stockholder or Affiliate
of any of such Persons or any of their respective assignees, or any former, current or future director, officer, employee, agent, general or limited partner, manager, member, stockholder or Affiliate of any of the foregoing, as such, for any
obligations of such Persons or their respective permitted assignees under this Agreement or any documents or instruments delivered in connection herewith or for any claim based on, in respect of or by reason of such obligation or its creation,
except, in each case, for any assignee of any Purchaser or a Selling Holder hereunder. 
 Section 3.14 Interpretation.
Article, Section and Schedule references in this Agreement are references to the corresponding Article, Section or Schedule to this Agreement, unless otherwise specified. All Schedules to this Agreement are hereby incorporated and made a part hereof
as if set forth in full herein and are an integral part of this Agreement. All references to instruments, documents, contracts and agreements are references to such instruments, documents, contracts and agreements as the same may be amended,
supplemented and otherwise modified from time to time, unless otherwise specified. The word “including” shall mean “including but not limited to” and shall not be construed to limit any general statement that it 

  
 23 

 
follows to the specific or similar items or matters immediately following it. Whenever the Partnership has an obligation under this Agreement, the expense of complying with that obligation shall
be an expense of the Partnership unless otherwise specified. Any reference in this Agreement to “$” shall mean U.S. dollars. Whenever any determination, consent or approval is to be made or given by a Purchaser, such action shall be in
such Holder’s sole discretion, unless otherwise specified in this Agreement. If any provision in this Agreement is held to be illegal, invalid, not binding or unenforceable, (a) such provision shall be fully severable and this Agreement shall
be construed and enforced as if such illegal, invalid, not binding or unenforceable provision had never comprised a part of this Agreement, and the remaining provisions shall remain in full force and effect, and (b) the parties hereto shall
negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in an acceptable manner in order that the transactions contemplated hereby are consummated as originally contemplated to the
greatest extent possible. When calculating the period of time before which, within which or following which any act is to be done or step taken pursuant to this Agreement, the date that is the reference date in calculating such period shall be
excluded. If the last day of such period is a non-Business Day, the period in question shall end on the next succeeding Business Day. The words such as “herein,” “hereinafter,” “hereof’ and “hereunder” refer
to this Agreement as a whole and not merely to a subdivision in which such words appear unless the context otherwise requires. The provision of a Table of Contents, the division of this Agreement into Articles, Sections and other subdivisions and
the insertion of headings are for convenience of reference only and shall not affect or be utilized in construing or interpreting this Agreement. 

[Remainder of Page Left Intentionally Blank] 

  
 24 

 IN WITNESS WHEREOF, the parties hereto execute this Agreement, effective as of the date first
above written. 
  

							
	DOMINION MIDSTREAM PARTNERS, LP
		
	By:	 	Dominion Midstream GP, LLC, its general partner
			
		 	By:	 	 /s/ James R. Chapman

		 	Name:	 		 	James R. Chapman
		 	Title:	 		 	Senior Vice President—Mergers & Acquisitions and Treasurer

  
 [Signature page to
Registration Rights Agreement] 

 
					
	STONEPEAK COMMONWEALTH HOLDINGS LLC
		
	By:	 	Stonepeak Commonwealth Upper Holdings LLC, its Managing Member
		
	By:	 	Stonepeak Infrastructure Fund II (AIV) LP, its Managing Member
		
	By:	 	Stonepeak Associates II LLC, its General Partner
		
	By:	 	Stonepeak GP Holdings II LP, its sole member
		
	By:	 	Stonepeak GP Investors II LLC, its general partner
		
	By:	 	Stonepeak GP Investors Manager LLC, its managing member
			
		 	By:	 	 /s/ Michael Dorrell

		 	Name:	 	Michael Dorrell
		 	Title:	 	Managing Member

  
 [Signature page to
Registration Rights Agreement] 

 
					
	MTP Energy Master Fund Ltd.
		
	By:	 	MTP Management, LLC, its Investment Manager
		
	By:	 	Magnetar Financial LLC, its Sole Member
			
		 	By:	 	 /s/ Michael Turro

		 	Name:	 	Michael Turro
		 	Title:	 	Chief Compliance Officer

  
 [Signature page to
Registration Rights Agreement] 

 
					
	Triangle Peak Partners II, LP
		
	By:	 	Triangle Peak Partners II General Partner, LLC,
		 	its General Partner
			
		 	By:	 	 /s/ Dain DeGroff

		 	Name:	 	Dain DeGroff
		 	Title:	 	Manager
	
	TPP II Annex Fund, LP
		
	By:	 	Triangle Peak Partners II General Partner, LLC,
		 	its General Partner
			
		 	By:	 	 /s/ Dain DeGroff

		 	Name:	 	Dain DeGroff
		 	Title:	 	Manager

  
 [Signature page to
Registration Rights Agreement] 

 
					
	Kayne Anderson MLP Investment Company
		
	By:	 	KA Fund Advisors, LLC, as Manager
			
		 	By:	 	 /s/ Kevin McCarthy

		 	Name:	 	Kevin McCarthy
		 	Title:	 	Co-Managing Partner
	
	Kayne Anderson Energy Development Company
			
		 	By:	 	 /s/ Kevin McCarthy

		 	Name:	 	Kevin McCarthy
		 	Title:	 	Co-Managing Partner
	
	MGMP, LP
			
		 	By:	 	 /s/ Kevin McCarthy

		 	Name:	 	Kevin McCarthy
		 	Title:	 	Co-Managing Partner
	
	LONGBOAT CAPITAL, LLC
			
		 	By:	 	 /s/ Kevin McCarthy

		 	Name:	 	Kevin McCarthy
		 	Title:	 	Co-Managing Partner

  
 [Signature page to
Registration Rights Agreement] 

 
					
	Tortoise Direct Opportunities Fund, LP
			
		 	By:	 	 /s/ Kyle Krueger

		 	Name:	 	Kyle Krueger
		 	Title:	 	Director

  
 [Signature page to
Registration Rights Agreement] 

 
					
	FR DM Holdings II, LLC
			
		 	By:	 	 /s/ Mark Saxe

		 	Name:	 	Mark Saxe
		 	Title:	 	Managing Director

  
 [Signature page to
Registration Rights Agreement] 

 SCHEDULE A 

Purchaser Name; Notice and Contact Information 
  

			
	 Purchaser
	  	 Contact Information

		
	Stonepeak Commonwealth Holdings LLC	  	 717 5th Avenue, 25th Floor

New York, NY 10022
 Attn: Jack Howell

howell@stonepeakpartners.com
 Fax: 212-907-5101

 
 With a copy to (which shall not constitute notice):

 
 Sidley Austin LLP

1000 Louisiana Street, Suite 6000
 Houston, TX 77002

Attn: Cliff W. Vrielink
 cvrielink@sidley.com

Fax: (713) 495-7799

		
	MTP Energy Master Fund Ltd.	  	 c/o Magnetar Financial LLC
 1603 Orrington Ave.,
13th Floor
 Evanston, IL 60201

Attn: Chief Legal Officer
 MTP_Notices@magnetar.com

Fax: 847-905-4400
  

With a copy to (which shall not constitute notice):
  

Kirkland & Ellis LLP
 600 Travis Street, Suite 3300

Houston, TX 77002
 Attn: Matthew R. Pacey

matt.pacey@kirkland.com
 Fax:
(713)-835-3601

  
 A-1 

			
	Triangle Peak Partners II, LP	  	 Triangle Peak Partners II, LP
 Attn: Michael C.
Morgan, Chief Executive Officer
 Carmel Plaza, Suite 305 (Ocean & Mission)

P.O. Box 3788
 Carmel, CA 93921

mike@trianglepeakpartners.com 
  

With a copy to (which shall not constitute notice):
  

Kirkland & Ellis LLP
 600 Travis Street, Suite 3300

Houston, TX 77002
 Attn: Matthew R. Pacey

matt.pacey@kirkland.com
 Fax: (713)-835-3601

		
	TPP II Annex Fund, LP	  	 Attn: Michael C. Morgan, Chief Executive Officer

Carmel Plaza, Suite 305 (Ocean & Mission)
 P.O. Box 3788

Carmel, CA 93921
 mike@trianglepeakpartners.com

 
 With a copy to (which shall not constitute notice):

 
 Kirkland & Ellis LLP

600 Travis Street, Suite 3300
 Houston, TX 77002

Attn: Matthew R. Pacey
 matt.pacey@kirkland.com

Fax: (713)-835-3601

		
	Kayne Anderson MLP Investment Company	  	 1800 Avenue of the Stars, 3rd Floor
 Los
Angeles, CA 90067
 Attn: David Shladovsky
 Email:
dshladovsky@kaynecapital.com
 Email: jbaker@kaynecapital.com

		
	Kayne Anderson Energy Development Company	  	 1800 Avenue of the Stars, 3rd Floor
 Los
Angeles, CA 90067
 Attn: David Shladovsky
 Email:
dshladovsky@kaynecapital.com
 Email: jbaker@kaynecapital.com

  
 A-2 

			
	MGMP, LP	  	 1800 Avenue of the Stars, 3rd Floor
 Los
Angeles, CA 90067
 Attn: David Shladovsky
 Email:
dshladovsky@kaynecapital.com
 Email: jbaker@kaynecapital.com

		
	LONGBOAT CAPITAL, LLC	  	 1800 Avenue of the Stars, 3rd Floor
 Los
Angeles, CA 90067
 Attn: David Shladovsky
 Email:
dshladovsky@kaynecapital.com
 Email: jbaker@kaynecapital.com

		
	Tortoise Direct Opportunities Fund, LP	  	 11550 Ash Street, Suite 300
 Leawood,
KS 66211
 spang@tortoiseadvisors.com
 Fax:
913-981-1021

		
	FR DM Holdings II, LLC	  	 c/o FREIF II Bravo AIV, L.P.
 One Lafayette
Place
 3rd Floor
 Greenwich, CT 06830

Attn: Matthew Raben
 mraben@firstreserve.com

Fax: 203-625-8553

  
 A-3 

 SCHEDULE B 

PURCHASERS DEEMED TO HAVE DELIVERED THE PIGGYBACK OPT-OUT NOTICE 

None. 

  
 B-1

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