Document:

Exhibit

Exhibit 10.6

AMENDMENT NO. 2
TO
SECOND AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT
OF
ROCKIES EXPRESS PIPELINE LLC

This Amendment No. 2 (this “Amendment”) to the Second Amended and Restated Limited Liability Company Agreement of Rockies Express Pipeline LLC, a Delaware limited liability company (the “Company”), executed this 5th day of May, 2016 and effective as of the Effective Time (as defined below), among Rockies Express Holdings, LLC, a Delaware limited liability company (“REX Holdings”), Sempra REX Holdings, LLC, a Delaware limited liability company (“Sempra”), and P66REX LLC, a Delaware limited liability company (f/k/a COPREX LLC, a Delaware limited liability company, “P66 Holdco”).  REX Holdings, Sempra and P66 Holdco are sometimes referred to herein collectively as the “Parties,” and each, a “Party.” 
RECITALS
WHEREAS, REX Holdings, Sempra and P66 Holdco are the Members of the Company and are parties to that certain Second Amended and Restated Limited Liability Company Agreement of Rockies Express Pipeline LLC, dated to be effective as of January 1, 2010, as amended by that certain Amendment No. 1 to Second Amended and Restated Limited Liability Company Agreement of Rockies Express Pipeline LLC, effective November 13, 2012 (as amended by Amendment No. 1, the “LLC Agreement”);
WHEREAS, pursuant to that certain Membership Interest Purchase Agreement, effective as of March 29, 2016 (the “MIPA”), Sempra has agreed to sell its 25% membership interest (the “Subject Interest”) in the Company to REX Holdings;
WHEREAS, pursuant to that certain Letter Agreement Re: P66REX LLC’s Conditional Revocation of Joinder Agreement and Waiver of Right of First Refusal, dated as of April 27, 2016, between the Parties (the “Letter Agreement”), REX Holdings and Sempra have agreed to amend the LLC Agreement;
WHEREAS, pursuant to Section 12.03 of the LLC Agreement, the LLC Agreement may be amended by a written instrument executed by Members collectively holding 75% or more of all of the Membership Interests of the Company; and
WHEREAS, in connection with the execution and delivery of the MIPA and Letter Agreement by the parties thereto, the Parties, as the Members holding greater than 75% of the Membership Interests of the Company, desire to enter into this Amendment to (a) increase the percentage of Membership Interests whose approval, consent or presence is required to take certain actions under the LLC Agreement, and (b) affirm that the Members do not owe fiduciary duties to the other Members or the Company itself.
NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned, being all of the Members, hereby enter into this Amendment to provide as follows:

AGREEMENT
1.Definitions.  Capitalized terms not otherwise defined in this Amendment shall have the meanings as set forth in the LLC Agreement.
2.    Amendments.  
		
	(a)
	The definition of “Required Consent” in Section 1.1 of the LLC Agreement is hereby amended to replace “85%” with “90%.” 

		
	(b)
	Sections 5.1, 5.2.4.4, 5.2.4.5.3, 5.5.2.3 and 12.3 of the LLC Agreement are hereby amended to replace “75%” with “80%.”

		
	(c)
	Section 5.4.1 of the LLC Agreement is hereby amended by adding the following text at the end of such section:

For the avoidance of doubt, each Director and Committee Representative shall not owe any fiduciary duty, express or implied, to any other Director or Committee Representative, Member (other than the Member that designated such Director or Committee Representative, the nature and extent of such duties being an internal corporate or organizational affair of such Member) or the Company. This Agreement is not intended to, and does not, create or impose any fiduciary duty on the Directors and Committee Representatives with respect to the other Directors and Committee Representatives, Members or the Company. 
		
	(d)
	Section 5.8.3 of the LLC Agreement is hereby amended to replace “85%” with “90%.”

		
	(e)
	The Agreement is hereby amended to include the following as new Section 5.5.3:

No Fiduciary Duty.  This Agreement is not intended to, and does not, create or impose any fiduciary duty on the Members with respect to the other Members or the Company. Furthermore, each of the Members and the Company waives any and all fiduciary duties that, absent such waiver, may be implied between a Member and any other Member or the Company, by applicable Law including the LLC Act, and in doing so, acknowledges and agrees that the fiduciary duties of each Member to each other Member and the Company exist only to the extent such fiduciary duties may be expressly set forth in this Agreement. The provisions of this Agreement, to the extent that they restrict the fiduciary duties of a Member otherwise existing at law or in equity, are agreed by the Members to replace such other fiduciary duties of such Member.
3.    Membership Interests.  P66 Holdco acknowledges REX Holdings’ right to assign the MIPA to a direct or indirect wholly owned subsidiary of Tallgrass Energy Partners, LP for the purpose of having such entity take ownership of the Subject Interest, so long as such assignment complies with Section 9.10(a) and the other applicable provisions of the MIPA (the “MIPA Assignment”).  The Parties hereby acknowledge that if the MIPA Assignment is consummated in accordance with Section 9.10(a) and other applicable provisions of the MIPA, then immediately after the consummation of the transactions contemplated by the MIPA, REX Holdings will hold 50% of the Membership Interests of the Company, P66 Holdco will hold 25% of the Membership Interests of the Company and the direct or indirect wholly owned subsidiary of Tallgrass Energy Partners, LP will hold 25% of the Membership Interests of the Company.
4.    Effective Time.  This Amendment shall be effective as of immediately prior to the closing of the transactions set forth in the MIPA (the “Effective Time”). 
5.    Limited Effect; Ratification. Except as amended hereby, the LLC Agreement is hereby ratified and confirmed, and shall continue to be, and shall remain, in full force and effect in accordance with its terms as currently written.

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6.    Captions.  Titles or captions of Sections or Articles contained in this Amendment are inserted only as a matter of convenience and for reference, and in no way define, limit, extend or describe the scope of this Amendment or the intent of any provision hereof. 
7.    Governing Law.  This Amendment shall be governed by, construed, interpreted and applied in accordance with the laws of the State of Delaware without regard to its conflict of law principles that may give rise to the application of the substantive law of another jurisdiction.
8.    Counterparts.  The Members may execute this Amendment in two or more counterparts, which shall, in the aggregate, be signed by all the Members, and each counterpart shall be deemed an original instrument as against any Member who has signed it. 
* * * * *

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IN WITNESS WHEREOF, the Parties have caused this Amendment to be executed by their duly authorized representatives to be effective as of the Effective Time.
	
			
	 
	P66REX LLC

	 
	By:
	/s/ Diana Santos

	 
	Name:
	Diana Santos

	 
	Title:
	President

	 
	 
	 

	 
	SEMPRA REX HOLDINGS, LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

	 
	 
	 

	 
	ROCKIES EXPRESS HOLDINGS, LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

Signature Page to Amendment No. 2 to Second Amended and Restated
Limited Liability Company Agreement of Rockies Express Pipeline LLC

IN WITNESS WHEREOF, the Parties have caused this Amendment to be executed by their duly authorized representatives to be effective as of the Effective Time.
	
			
	 
	P66REX LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

	 
	 
	 

	 
	SEMPRA REX HOLDINGS, LLC

	 
	By:
	/s/ Michael P. Gallagher

	 
	Name:
	Michael P. Gallagher

	 
	Title:
	President

	 
	 
	 

	 
	ROCKIES EXPRESS HOLDINGS, LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

Signature Page to Amendment No. 2 to Second Amended and Restated
Limited Liability Company Agreement of Rockies Express Pipeline LLC

IN WITNESS WHEREOF, the Parties have caused this Amendment to be executed by their duly authorized representatives to be effective as of the Effective Time.
	
			
	 
	P66REX LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

	 
	 
	 

	 
	SEMPRA REX HOLDINGS, LLC

	 
	By:
	 

	 
	Name:
	 

	 
	Title:
	 

	 
	 
	 

	 
	ROCKIES EXPRESS HOLDINGS, LLC

	 
	By:
	/s/ David G. Dehaemers, Jr.

	 
	Name:
	David G. Dehaemers, Jr.

	 
	Title:
	Chief Executive Officer

Signature Page to Amendment No. 2 to Second Amended and Restated
Limited Liability Company Agreement of Rockies Express Pipeline LLCEX-4.1.a

 Exhibit 4.1.a 

DOMINION GAS HOLDINGS, LLC 
 as
Issuer, 
 and 
 DEUTSCHE BANK
TRUST COMPANY AMERICAS 
 as Trustee, 
  

 
 Eighth
Supplemental Indenture 
 Dated as of May 1, 2016 
  

 
 $150,000,000

 2016 Series A 3.80% Senior Notes 

due 2031 

 TABLE OF CONTENTS* 
  

									
	ARTICLE I         2016 SERIES A 3.80% SENIOR NOTES DUE 2031	  	 	1	  
				
		 	Section 101.	 	 Establishment
	  	 	1	  
				
		 	Section 102.	 	 Definitions
	  	 	2	  
				
		 	Section 103.	 	 Payment of Principal and Interest
	  	 	4	  
				
		 	Section 104.	 	 Denominations
	  	 	5	  
				
		 	Section 105.	 	 Global Securities
	  	 	5	  
				
		 	Section 106.	 	 Redemption
	  	 	6	  
				
		 	Section 107.	 	 Sinking Fund; Conversion
	  	 	7	  
				
		 	Section 108.	 	 Additional Interest
	  	 	7	  
				
		 	Section 109.	 	 Paying Agent
	  	 	7	  
		
	ARTICLE II       MISCELLANEOUS PROVISIONS	  	 	8	  
				
		 	Section 201.	 	 Ratification and Incorporation of Base Indenture
	  	 	8	  
				
		 	Section 202.	 	 Executed in Counterparts
	  	 	8	  
				
		 	Section 203.	 	 Assignment
	  	 	8	  
				
		 	Section 204.	 	 Trustee’s Disclaimer
	  	 	8	  

  

	* 	This Table of Contents does not constitute part of the Indenture or have any bearing upon the interpretation of any of its terms and provisions. 

 THIS EIGHTH SUPPLEMENTAL INDENTURE is made as of the 1st day of May, 2016, by and between
DOMINION GAS HOLDINGS, LLC, a Virginia limited liability company, having its principal office at 120 Tredegar Street, Richmond, Virginia 23219 (the “Company”) and DEUTSCHE BANK TRUST COMPANY AMERICAS, a New York banking corporation, as
Trustee, having a corporate trust office at 60 Wall Street, 16th Floor, New York, New York 10005 (herein called the “Trustee”). 

W I T N E S S E T H: 
 WHEREAS,
the Company has heretofore entered into an Indenture dated as of October 1, 2013, between the Company and the Trustee (as amended, restated or otherwise modified, the “Base Indenture”) with respect to senior debt securities; 

WHEREAS, the Base Indenture is incorporated herein by this reference and the Base Indenture, as heretofore supplemented, as further
supplemented by this Eighth Supplemental Indenture, and as may be hereafter supplemented or amended from time to time, is herein called the “Indenture”; 

WHEREAS, under the Base Indenture, a new series of Securities may at any time be established in accordance with the provisions of the Base
Indenture and the terms of such series may be described by a supplemental indenture executed by the Company and the Trustee; 
 WHEREAS, the
Company proposes to create under the Indenture a new series of Securities; 
 WHEREAS, additional Securities of other series hereafter
established, except as may be limited in the Base Indenture as at the time supplemented and modified, may be issued from time to time pursuant to the Indenture as at the time supplemented and modified; 

WHEREAS, all conditions necessary to authorize the execution and delivery of this Eighth Supplemental Indenture and to make it a valid and
binding obligation of the Company have been done or performed. 
 NOW, THEREFORE, in consideration of the agreements and obligations set
forth herein and for other good and valuable consideration, the sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows: 

ARTICLE I 
 2016 SERIES A
3.80% SENIOR NOTES DUE 2031 
 Section 101. Establishment. There is hereby established a new series of Securities to be issued
under the Indenture, to be designated as the Company’s 2016 Series A 3.80% Senior Notes due 2031 (the “Series A Senior Notes”). 

  
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 There are to be authenticated and delivered $150,000,000 principal amount of Series A Senior
Notes, and such principal amount of the Series A Senior Notes may be increased from time to time pursuant to the penultimate paragraph of Section 301 of the Base Indenture. All Series A Senior Notes need not be issued at the same time and such
series may be reopened at any time, without the consent of any Holder, for issuances of additional Series A Senior Notes. Any such additional Series A Senior Notes will have the same interest rate, maturity and other terms as those initially issued.
Further Series A Senior Notes may also be authenticated and delivered as provided by Sections 304, 305, 306, 905 or 1107 of the Base Indenture. 

The Series A Senior Notes shall be issued as Registered Securities in global form without coupons, in substantially the form set out in
Exhibit A hereto. The entire initially issued principal amount of the Series A Senior Notes shall initially be evidenced by one or more certificates which shall be deposited with, or on behalf of, Clearstream Banking, société
anonyme (“Clearstream”) and Euroclear Bank S.A./N.V., as operator of the Euroclear system (“Euroclear”) and registered in the name of the Common Depositary or its nominee for, and in respect of interests held through, Clearstream
and Euroclear. 
 The form of the Trustee’s Certificate of Authentication for the Series A Senior Notes shall be in substantially the
form set forth in Exhibit B hereto. 
 Each Series A Senior Note shall be dated the date of authentication thereof and shall bear
interest from the date of original issuance thereof or from the most recent Interest Payment Date to which interest has been paid or duly provided for. 

Section 102. Definitions. The following defined terms used herein shall, unless the context otherwise requires, have the meanings
specified below. Capitalized terms used herein for which no definition is provided herein shall have the meanings set forth in the Base Indenture. Unless the context otherwise requires, any reference to a “Section” refers to a Section of
this Eighth Supplemental Indenture. 
 “Business Day” means any day that is not a Saturday or Sunday and that is not a day on
which banking institutions are authorized or obligated by law or executive order to close in London, United Kingdom or New York, New York, and on which the Trans-European Automated Real-time Gross Settlement Express Transfer system (the TARGET2
system), or any successor thereto, operates. 
 “Common Depositary” means a depositary common to Clearstream and Euroclear, being
initially Deutsche Bank AG, London Branch, until a successor Common Depositary, if any, shall have become such pursuant to this Indenture, and thereafter Common Depositary shall mean or include each Person who is then a Common Depositary hereunder.

 “Comparable Treasury Issue” means the United States Treasury security selected by an Independent Investment Banker as having a
maturity comparable to the remaining term of the Series A Senior Notes to be redeemed (assuming, for this purpose, that the Series A Senior Notes matured on April 23, 2031) that would be utilized, at the time of selection and in accordance with
customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term in years and months of the Series A Senior Notes. 

  
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 “Comparable Treasury Price” for any Redemption Date means (i) the average of the
Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest Reference Treasury Dealer Quotations, or (ii) if the Independent Investment Banker obtains fewer than five such Reference Treasury Dealer
Quotations, the average of all such quotations. 
 “Independent Investment Banker” means Deutsche Bank Securities Inc. and its
affiliates or successors or any other independent investment and banking institution of national standing appointed by the Company. 

“Interest Payment Dates” means May 15 and November 15 of each year, commencing on November 15, 2016, provided that
the final interest period shall run from November 15, 2030 to May 23, 2031, and the final interest payment date shall be May 23, 2031. 

“Original Issue Date” means May 25, 2016. 

“Outstanding,” when used with respect to the Series A Senior Notes, means, as of the date of determination, all Series A Senior
Notes theretofore authenticated and delivered under the Indenture, except: 
 (i) Series A Senior Notes theretofore canceled by the Trustee
or delivered to the Trustee for cancellation; 
 (ii) Series A Senior Notes for whose payment at the Maturity thereof money in the necessary
amount has been theretofore deposited (other than pursuant to Section 402 of the Base Indenture) with the Trustee or any Paying Agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company shall
act as its own Paying Agent) for the Holders of such Series A Senior Notes, provided that, if such Series A Senior Notes are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory
to the Trustee has been made; 
 (iii) Series A Senior Notes with respect to which the Company has effected defeasance or covenant
defeasance pursuant to Section 402 of the Base Indenture, except to the extent provided in Section 402 of the Base Indenture; and 

(iv) Series A Senior Notes that have been paid pursuant to Section 306 of the Base Indenture or in exchange for or in lieu of which other
Series A Senior Notes have been authenticated and delivered pursuant to the Indenture, other than any such Series A Senior Notes in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Series A Senior
Notes are held by a bona fide purchaser in whose hands such Series A Senior Notes are valid obligations of the Company; 
 provided, however, that in
determining whether the Holders of the requisite principal amount of Outstanding Series A Senior Notes have given any request, demand, authorization, direction, notice, consent or waiver under the Indenture or are present at a meeting of Holders of
Series A Senior Notes for quorum purposes, Series A Senior Notes owned by the Company or any other obligor upon the Series A Senior Notes or any Affiliate of the Company or such other obligor shall be disregarded and deemed not to be Outstanding,
except that, in determining whether the 

  
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Trustee shall be protected in making any such determination or relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Series A Senior Notes which a
Responsible Officer of the Trustee actually knows to be so owned shall be so disregarded. Series A Senior Notes so owned which shall have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of the
Trustee (A) the pledgee’s right so to act with respect to such Series A Senior Notes and (B) that the pledgee is not the Company or any other obligor upon the Series A Senior Notes or an Affiliate of the Company or such other obligor.

 “Primary Treasury Dealer” means a primary United States government securities dealer in the United States as designated by the
Federal Reserve Bank of New York. 
 “Reference Treasury Dealer” means (i) Deutsche Bank Securities Inc. and its affiliates
or successors; provided that, if any such firm or its successors ceases to be a Primary Treasury Dealer, the Company shall substitute another Primary Treasury Dealer; and (ii) up to four other Primary Treasury Dealers selected by the Company.

 “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the
average, as determined by the Independent Investment Banker, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Independent Investment Banker at
3:30 p.m., New York City time, on the third Business Day preceding such Redemption Date. 
 “Regular Record Date” means, with
respect to each Interest Payment Date, the close of business on the Business Day preceding such Interest Payment Date; provided, that with respect to Series A Senior Notes that are not represented by one or more Global Securities, the Regular Record
Date shall be the close of business on the 15th calendar day (whether or not a Business Day) preceding such Interest Payment Date. 

“Securities Act” means the Securities Act of 1933, as amended. 

“Stated Maturity” means May 23, 2031. 

“Treasury Rate” means, with respect to any Redemption Date, the rate per annum equal to the semiannual equivalent yield to maturity
or interpolated (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date. 

The terms “Company,” “Trustee,” “Base Indenture,” and “Indenture” shall have the respective meanings
set forth in the recitals to this Eighth Supplemental Indenture and the paragraph preceding such recitals. 
 Section 103. Payment of
Principal and Interest. The principal of the Series A Senior Notes shall be due at the Stated Maturity (unless earlier redeemed). The unpaid principal amount of the Series A Senior Notes shall bear interest at the rate of 3.80% per annum
until paid or duly provided for, such interest to accrue from the Original Issue Date or from the most recent Interest Payment Date to which interest has been paid or duly provided for. Interest shall be paid semi-annually 

  
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in arrears on each Interest Payment Date to the Person in whose name the Series A Senior Notes are registered on the Regular Record Date for such Interest Payment Date; provided that interest
payable at the Stated Maturity of principal or on a Redemption Date as provided herein will be paid to the Person to whom principal is payable. Any such interest that is not so punctually paid or duly provided for will forthwith cease to be payable
to the Holders on such Regular Record Date and may either be paid to the Person or Persons in whose name the Series A Senior Notes are registered at the close of business on a Special Record Date for the payment of such defaulted interest to be
fixed by the Trustee (in accordance with Section 307 of the Base Indenture), notice whereof shall be given to Holders of the Series A Senior Notes not less than ten (10) days prior to such Special Record Date, or be paid at any time in any
other lawful manner not inconsistent with the requirements of any securities exchange, if any, on which the Series A Senior Notes may be listed, and upon such notice as may be required by any such exchange, all as more fully provided in the Base
Indenture. 
 Payments of interest on the Series A Senior Notes will include interest accrued to but excluding the respective Interest
Payment Dates. Interest payments for the Series A Senior Notes shall be computed and paid on the basis of a 360-day year of twelve 30-day months. In the event that any date on which interest is payable on the Series A Senior Notes is not a Business
Day, then payment of the interest payable on such date will be made on the next succeeding day that is a Business Day (and without any interest or payment in respect of any such delay), in each case with the same force and effect as if made on the
date the payment was originally payable. 
 Payment of the principal and interest on the Series A Senior Notes shall be made at the office
of an Affiliate of the Trustee in London, United Kingdom, as designated in writing from time to time by the Trustee, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private
debts, with any such payment that is due at the Stated Maturity of any Series A Senior Notes, upon redemption or repurchase being made upon surrender of such Series A Senior Notes to the Paying Agent; provided that payments of interest (including
interest on any Interest Payment Date) will be made, subject to such surrender where applicable, at the option of the Company, (i) by check mailed to the address of the Person entitled thereto as such address shall appear in the Security
Register or (ii) by wire transfer at such place and to such account at a banking institution as may be designated in writing to the Company and the Trustee at least sixteen (16) days prior to the date for payment by the Person entitled
thereto. In the event that any date on which principal and interest is payable on the Series A Senior Notes is not a Business Day, then payment of the principal and interest payable on such date will be made on the next succeeding day that is a
Business Day (and without any interest or payment in respect of any such delay), in each case with the same force and effect as if made on the date the payment was originally payable. 

Section 104. Denominations. The Series A Senior Notes may be issued in denominations of $200,000, or any greater integral multiple of
$1,000. 
 Section 105. Global Securities. The Series A Senior Notes will be initially issued in the form of one or more Global
Securities registered in the name of the Common Depositary or its nominee. Except under the limited circumstances described below, Series A Senior Notes represented by such Global Securities will not be exchangeable for, and will not otherwise be
issuable as, Series A Senior Notes in definitive form registered in names other than the Common Depositary or its nominee. The Global Securities described above may not be transferred except 

  
 5 

 
by the Common Depositary to a nominee of the Common Depositary or by a nominee of the Common Depositary to the Common Depositary or another nominee of the Common Depositary or to a successor
Common Depositary or its nominee. 
 Owners of beneficial interests in such a Global Security will not be considered the Holders thereof for
any purpose under the Indenture, and no Global Security representing a Series A Senior Note shall be exchangeable, except for another Global Security of like denomination and tenor to be registered in the name of the Common Depositary or its nominee
or to a successor Common Depositary or its nominee or except as described below. The rights of Holders of such Global Security shall be exercised only through the Common Depositary. 

A Global Security shall be exchangeable for Series A Senior Notes registered in the names of persons other than the Common Depositary or its
nominee only if (i) Clearstream, Euroclear or any successor thereto notifies the Company that it is no longer willing or able to act as a clearing system for the Global Securities, or (ii) the Company determines, in its sole discretion,
not to have the Series A Senior Notes represented by a Global Security. Certificated Notes issued in exchange for Global Securities, any beneficial interest therein or any portion thereof shall be registered in the names, and issued in any approved
denominations, requested by or on behalf of the Common Depositary (in accordance with its customary procedures). 
 Section 106.
Redemption. Prior to April 23, 2031, the Series A Senior Notes are redeemable, in whole or in part at any time and from time to time at the option of the Company, at a Redemption Price equal to the greater of: 

(i) 100% of the principal amount of Series A Senior Notes then Outstanding to be so redeemed, or 

(ii) the sum of the present values of the remaining scheduled payments of principal and interest on the Series A Senior Notes to be redeemed
that would be due if such Series A Senior Notes matured on April 23, 2031 but for the redemption (not including any portion of such payments of interest accrued as of the Redemption Date) discounted to the Redemption Date on a semi-annual basis
(assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate, plus 35 basis points, as calculated by an Independent Investment Banker, 

plus, in either of the above cases, accrued and unpaid interest thereon to the Redemption Date. 

On or after April 23, 2031, the Series A Senior Notes are redeemable, in whole or in part, at any time and from time to time at the
option of the Company, at a Redemption Price equal to 100% of the principal amount of Series A Senior Notes then Outstanding to be so redeemed, plus accrued and unpaid interest thereon to the Redemption Date. 

The Treasury Rate shall be calculated no later than the third Business Day preceding the Redemption Date. 

Unless the Company defaults in the payment of the Redemption Price, on and after the Redemption Date, interest will cease to accrue on the
Series A Senior Notes or portions thereof called for redemption. 

  
 6 

 In the event of the redemption of the Series A Senior Notes in part only, a new Series A Senior
Note or Notes for the unredeemed portion will be issued in the name or names of the Holders thereof upon surrender thereof. 
 In the case
of a partial redemption, no such partial redemption shall reduce the portion of the principal amount of a Series A Senior Note not redeemed to less than $200,000. 

The Company shall notify the Trustee of the Redemption Price in writing promptly after the calculation thereof and the Trustee shall have no
responsibility for such calculation. The notice of redemption shall be sent in accordance with the terms of the Base Indenture. 
 Section
107. Sinking Fund; Conversion. The Series A Senior Notes shall not have a sinking fund. The Series A Senior Notes are not convertible into or exchangeable for Equity Securities or any other securities. 

Section 108. Additional Interest on Overdue Amounts. Any principal of and installment of interest on the Series A Senior Notes that is
overdue shall bear interest at the rate of 3.80% per annum (to the extent that the payment of such interest shall be legally enforceable), from the dates such amounts are due until they are paid or made available for payment, and such interest
shall be payable on demand. 
 Section 109. Paying Agent and Place of Payment. The Trustee shall initially serve as Paying Agent with
respect to the Series A Senior Notes. The Place of Payment for the Series A Senior Notes issued hereunder shall be the office of an Affiliate of the Trustee in London, United Kingdom, as designated in writing from time to time by the Trustee. In
addition, the Company undertakes that, to the extent permitted by law, the Company will, for as long as Series A Senior Notes issued hereunder remain Outstanding, use its commercially reasonable efforts to maintain a Place of Payment in a Member
State of the European Union (if any) that will not be required to withhold or deduct tax pursuant to European Council Directive 2003/48/EC or any other Directive implementing the conclusions of the ECOFIN Council meeting of November 26-27, 2000
or any law implementing or complying with, or introduced to conform to, such Directive. 

  
 7 

 ARTICLE II 

MISCELLANEOUS PROVISIONS 

Section 201. Ratification and Incorporation of Base Indenture. As supplemented hereby, the Base Indenture is in all respects ratified
and confirmed by the Company, and the Base Indenture and this Eighth Supplemental Indenture shall be read, taken and construed as one and the same instrument. 

Section 202. Executed in Counterparts. This Eighth Supplemental Indenture may be executed in several counterparts, each of which shall
be deemed to be an original, and such counterparts shall together constitute but one and the same instrument. The exchange of copies of this Eighth Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute
effective execution and delivery of this Eighth Supplemental Indenture as to the parties hereto and may be used in lieu of the original manually executed Eighth Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by
facsimile or PDF shall be deemed to be their original signatures for all purposes. 
 Section 203. Assignment. The Company shall have
the right at all times to assign any of its rights or obligations under the Indenture with respect to the Series A Senior Notes to a direct or indirect wholly-owned subsidiary of the Company; provided that, in
the event of any such assignment, the Company shall remain primarily liable for the performance of all such obligations. The Indenture may also be assigned by the Company in connection with a transaction described in Article Eight of the Base
Indenture. 
 Section 204. Trustee’s Disclaimer. All of the provisions contained in the Base Indenture in respect of the rights,
powers, privileges, protections, duties and immunities of the Trustee, including without limitation its right to be indemnified, shall be applicable in respect of the Series A Senior Notes and of this Eighth Supplemental Indenture as fully and with
like effect as if set forth herein in full. The Trustee accepts the amendments of the Indenture effected by this Eighth Supplemental Indenture, but on the terms and conditions set forth in the Indenture, including the terms and provisions defining
and limiting the liabilities and responsibilities of the Trustee. Without limiting the generality of the foregoing, the Trustee shall not be responsible in any manner whatsoever for or with respect to any of the recitals or statements contained
herein, all of which recitals or statements are made solely by the Company, or for or with respect to (i) the validity or sufficiency of this Eighth Supplemental Indenture or any of the terms or provision hereof, (ii) the proper
authorization hereof by the Company by action or otherwise, (iii) the due execution hereof by the Company, or (iv) the consequences of any amendment herein provided for, and the Trustee makes no representation with respect to any such
matters. 
 [Signature Page Follows] 

  
 8 

 IN WITNESS WHEREOF, each party hereto has caused this instrument to be signed in its name and behalf by its duly
authorized officer, all as of the day and year first above written. 
  

			
	DOMINION GAS HOLDINGS, LLC
		
	By:	 	  /s/ James R. Chapman

	Name:	 	James R. Chapman
	Title:	 	Senior Vice President – Mergers & Acquisitions and Treasurer
	
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
		
	By:	 	  /s/ Carol Ng

	Name:	 	Carol Ng
	Title:	 	Vice President
		
	By:	 	  /s/ Deirdra N. Ross

	Name:	 	Deirdra N. Ross
	Title:	 	Vice President

  
 9 

 EXHIBIT A 

FORM OF 
 2016 SERIES A
3.80% SENIOR NOTE 
 DUE 2031 

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF DEUTSCHE BANK AG, LONDON BRANCH AS COMMON DEPOSITARY FOR CLEARSTREAM
BANKING, SOCIÉTÉ ANONYME, LUXEMBOURG, AND EUROCLEAR BANK SA/NV, AS OPERATOR OF THE EUROCLEAR SYSTEM (THE “COMMON DEPOSITARY”), TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF BT GLOBENET NOMINEES LIMITED OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE COMMON DEPOSITARY AND ANY PAYMENT IS MADE TO BT GLOBENET NOMINEES LIMITED OR TO SUCH OTHER ENTITY AS IS REQUESTED
BY AN AUTHORIZED REPRESENTATIVE OF THE COMMON DEPOSITORY, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, BT GLOBENET NOMINEES LIMITED, HAS AN INTEREST HEREIN.]**

 [THIS SERIES A SENIOR NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME
OF BT GLOBENET NOMINEES LIMITED. THIS SERIES A SENIOR NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS SERIES A SENIOR NOTE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN
SUCH COMMON DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SERIES A SENIOR NOTE AUTHENTICATED AND DELIVERED UPON REGISTRATION OF, TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SERIES A
SENIOR NOTE SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.]** 
 THIS SECURITY HAS NOT BEEN
REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD,
ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE U.S. SECURITIES ACT. 

THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, AGREES ON ITS OWN BEHALF AND ON BEHALF OF ANY INVESTOR FOR WHICH IT HAS PURCHASED
SECURITIES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH 
  
  

	**	Insert in Global Securities. 

  
 A-1 

 
SECURITY, PRIOR TO THE DATE WHICH IS 40 DAYS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE DATE ON WHICH THE SECURITY (OR ANY PREDECESSOR OF THIS SECURITY) WAS FIRST OFFERED TO
PERSONS OTHER THAN DISTRIBUTORS (AS DEFINED IN RULE 902 OF REGULATION S) IN RELIANCE ON REGULATION S, ONLY (A) TO THE ISSUER, (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE U.S. SECURITIES ACT,
(C) PURSUANT TO OFFERS AND SALES THAT OCCUR OUTSIDE THE UNITED STATES IN COMPLIANCE WITH THE U.S. SECURITIES ACT, OR (D) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE U.S. SECURITIES ACT, SUBJECT IN
EACH OF THE FOREGOING CASES TO ANY REQUIREMENT OF LAW THAT THE DISPOSITION OF ITS PROPERTY OR THE PROPERTY OF SUCH INVESTOR ACCOUNT OR ACCOUNTS BE AT ALL TIMES WITHIN ITS OR THEIR CONTROL AND IN COMPLIANCE WITH ANY APPLICABLE STATE SECURITIES LAWS;
AND ANY APPLICABLE LOCAL LAWS AND REGULATIONS. 
 THE HOLDER OF THIS NOTE, BY ITS ACCEPTANCE HEREOF, AGREES ON ITS OWN BEHALF AND ON BEHALF
OF ANY INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED SECURITIES THAT IT SHALL NOT TRANSFER THE SECURITIES IN AN AMOUNT LESS THAN $200,000. 
  

 
 DOMINION GAS
HOLDINGS, LLC 
  
  

$150,000,000 
 2016 SERIES A 3.80%
SENIOR NOTE 
 DUE 2031 
  

			
	No. R-            	  	ISIN No. XS1418789563

 Euroclear and Clearstream Common Code No. 141878956 

Dominion Gas Holdings, LLC, a limited liability company duly organized and existing under the laws of Virginia (herein called the
“Company,” which term includes any successor Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to BT Globenet Nominees Limited**, or registered assigns (the “Holder”), the principal
sum of One Hundred Fifty Million Dollars ($150,000,000) on May 23, 2031 and to pay interest thereon from May 25, 2016 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually in
arrears on May 15 and November 15 of each year, commencing on November 15, 2016, with the final Interest Payment Date being May 23, 2031, at the rate of 3.80% per annum, until the principal hereof is paid or made available
for payment, provided that any principal, and any such installment of interest, that is overdue shall bear interest at the rate of 3.80% per annum (to the extent that the payment of such interest shall be legally enforceable), from the dates
such amounts are due until they are paid or made available for payment, and such interest shall be payable on demand. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Series A Senior Note (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such 

  
 A-2 

 
interest; provided that the interest payable at Stated Maturity or on a Redemption Date will be paid to the Person to whom principal is payable. The Regular Record Date shall be the close of
business on the Business Day preceding such Interest Payment Date; provided, that with respect to Series A Senior Notes that are not represented by one or more Global Securities, the Regular Record Date shall be the close of business on the 15th
calendar day (whether or not a Business Day) preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to
the Person in whose name this Series A Senior Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be
given to Holders of Series A Senior Notes not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Series A Senior Notes
may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture. 
 Payments of
interest on the Series A Senior Notes will include interest accrued to but excluding the respective Interest Payment Dates. Interest payments for the Series A Senior Notes shall be computed and paid on the basis of a 360-day year of twelve 30-day
months. In the event that any date on which interest is payable on the Series A Senior Notes is not a Business Day, then payment of the interest payable on such date will be made on the next succeeding day that is a Business Day (and without any
interest or payment in respect of any such delay), in each case with the same force and effect as if made on the date the payment was originally payable. 

Payment of the principal of and interest on this Series A Senior Note will be made at the office of an Affiliate of the Trustee in London,
United Kingdom, as designated in writing from time to time by the Trustee, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts, with any such payment that is due
at the Stated Maturity of any Series A Senior Note, upon redemption or repurchase being made upon surrender of such Series A Senior Note to such office or agency; provided, however, that at the option of the Company payment of interest, subject to
such surrender where applicable, may be made (i) by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register or (ii) by wire transfer at such place and to such account at a banking
institution as may be designated in writing to the Trustee at least sixteen (16) days prior to the date for payment by the Person entitled thereto. 

Reference is hereby made to the further provisions of this Series A Senior Note set forth on the reverse hereof, which further provisions
shall for all purposes have the same effect as if set forth at this place. 
 Unless the certificate of authentication hereon has been
executed by the Trustee referred to on the reverse hereof by manual signature, this Series A Senior Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

  
 A-3 

 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed. 

 

							
	 Dated:
	 		 	DOMINION GAS HOLDINGS, LLC
				
		 		 	By:	 	  

		 		 	Name:	 	  

		 		 	Title:	 	  

  
 A-4 

 [REVERSE OF 2016 SERIES A 3.80% SENIOR NOTE] 

This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be
issued in one or more series under an Indenture dated as of October 1, 2013 (the “Base Indenture”), as heretofore supplemented and as further supplemented by a Eighth Supplemental Indenture dated as of May 1, 2016 (the
“Eighth Supplemental Indenture” and together with the Base Indenture, as it may be hereafter supplemented or amended from time to time, the “Indenture,” which term shall have the meaning assigned to it in such instrument), by and
between the Company and Deutsche Bank Trust Company Americas, as Trustee (the “Trustee”), and reference is hereby made to the Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof (the “Series A Senior
Notes”) which is unlimited in aggregate principal amount. 
 The Series A Senior Notes are redeemable, in whole or in part, at any time
and from time to time in the manner and with the effect provided in the Indenture. 
 If an Event of Default with respect to Series A Senior
Notes shall occur and be continuing, the principal of the Series A Senior Notes may be declared due and payable in the manner and with the effect provided in the Indenture. 

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations
of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee for the series of Securities affected, with the consent of the Holders of a majority in
principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time
Outstanding, on behalf of the Holders of all Securities of such series, to waive certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Series A Senior Note shall be conclusive and binding
upon such Holder and upon all future Holders of this Series A Senior Note and of any Series A Senior Note issued upon the registration of transfer hereof or in exchange therefor or in lieu hereof, whether or not notation of such consent or waiver is
made upon this Series A Senior Note. 
 As provided in and subject to the provisions of the Indenture, the Holder of this Series A Senior
Note shall not have the right to institute any proceeding with respect to the Indenture or for the appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written notice of
a continuing Event of Default with respect to the Series A Senior Notes, the Holders of not less than a majority in principal amount of the Series A Senior Notes at the time Outstanding shall have made written request to the Trustee to institute
proceedings in respect of such Event of Default as Trustee and offered the Trustee indemnity or security reasonably satisfactory to it, and the Trustee shall not have received from the Holders of a majority in principal amount of Series A Senior
Notes at the time Outstanding a direction inconsistent with such request, and shall have failed to institute any such proceeding for 60 days after receipt of such notice, request and offer of indemnity. The foregoing shall not apply to any suit
instituted by the Holder of this Series A Senior Note for the enforcement of any payment of principal hereof or premium, if any, or interest hereon on or after the respective due dates expressed or provided for herein. 

  
 A-5 

 No reference herein to the Indenture and no provision of this Series A Senior Note or of the
Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of, premium, if any, and interest on this Series A Senior Note at the times, place and rate, and in the coin or currency, herein
prescribed. 
 As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Series A Senior Note
is registrable in the Security Register, upon surrender of this Series A Senior Note for registration of transfer at the office or agency of the Company in any place where the principal of, premium, if any, and interest on this Series A Senior Note
are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or
more new Series A Senior Notes of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees. 

The Series A Senior Notes are issuable only in registered form without coupons in denominations of $200,000 or any greater integral multiple
of $1,000. As provided in the Indenture and subject to certain limitations therein set forth, Series A Senior Notes are exchangeable for a like aggregate principal amount of Series A Senior Notes having the same Stated Maturity and of like tenor of
any authorized denominations as requested by the Holder upon surrender of the Series A Senior Note or Series A Senior Notes to be exchanged at the office or agency of the Company. 

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith. 
 Prior to due presentment of this Series A Senior Note for
registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Series A Senior Note be overdue,
and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary. 
 All terms used in this Series A
Senior Note that are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

  
 A-6 

 ABBREVIATIONS 

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according
to applicable laws or regulations: 
  

			
	TEN COM -	  	as tenants in common
		
	TEN ENT -	  	as tenants by the entireties
		
	JT TEN -	  	as joint tenants with rights of survivorship and not as tenants in common
		
	UNIF GIFT MIN ACT -	  	                                      
                               Custodian for
		  	(Cust)
		
		  	                                      
                              
		  	(Minor)
		
		  	Under Uniform Gifts to Minors Act of
		
		  	                                      
                              
		  	(State)

 Additional abbreviations may also be used though not on the above list. 

 

                          
                                         
                                         
                   

  
 A-7 

 FOR VALUE RECEIVED, the undersigned hereby sell(s) and transfer(s) unto 

 

			
	  
	 	.

 (please insert Social Security or other identifying number of assignee) 

			
	  
	 	.
	  
	 	.
	  
	 	.

 PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE OF ASSIGNEE 

the within Series A Senior Note and all rights thereunder, hereby irrevocably constituting and appointing 

 

			
	  
	 	.
	  
	 	.
	  
	 	.
		
	  
	 	.
	  
	 	.
	  
	 	.

 agent to transfer said Series A Senior Note on the books of the Company, with full power of substitution in the premises. 

Dated:
                                       ,
                 
  

                       
                                         
             
 NOTICE: The signature to this assignment must correspond with the name as
written upon the face of the within instrument in every particular without alteration or enlargement, or any change whatever. 

  
 A-8 

 EXHIBIT B 

CERTIFICATE OF AUTHENTICATION 

This is one of the Securities of the series designated therein referred to in the within-mentioned
Indenture. 
  

							
		 		 	 DEUTSCHE BANK TRUST COMPANY AMERICAS,

as Trustee

				
		 		 	By:	 	  

		 		 		 	Authorized Signatory
				
		 		 	Dated:	 	

  
 B-1

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