Document:

EX-10.1

 Exhibit 10.1 

Execution Version 
  

 
  

SECOND AMENDED & RESTATED CREDIT AGREEMENT 

dated as of 
 February 2, 2015

 among 
 ACCESS MIDSTREAM
PARTNERS, L.P., 
 NORTHWEST PIPELINE LLC 

and 
 TRANSCONTINENTAL GAS PIPE
LINE COMPANY, LLC, 
 as Borrowers 

The Lenders Party Hereto 
 and

 CITIBANK, N.A., 
 as
Administrative Agent 
  
  

 
 CITIGROUP GLOBAL MARKETS INC., 

BARCLAYS BANK PLC, 
 J.P. MORGAN
SECURITIES LLC, 
 RBS SECURITIES INC., 

THE BANK OF NOVA SCOTIA, 
 WELLS
FARGO SECURITIES, LLC, 
 MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED, 

UBS SECURITIES LLC 
 and 

CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK, 

as Joint Lead Arrangers and Joint Bookrunners 

BARCLAYS BANK PLC, 
 JPMORGAN CHASE
BANK, N.A., 
 THE ROYAL BANK OF SCOTLAND PLC, 

THE BANK OF NOVA SCOTIA, 
 WELLS
FARGO BANK, N.A., 
 BANK OF AMERICA, N.A., 

UBS SECURITIES LLC 
 and 

CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK, 

as Co-Documentation Agents 

$3,500,000,000 Senior Unsecured Revolving Credit Facility 

 TABLE OF CONTENTS 

 

							
	 	    	 	  	Page	 
		
	 ARTICLE I DEFINITIONS AND ACCOUNTING TERMS
	  	 	1	  
			
	 Section 1.01
	    	 Defined Terms
	  	 	1	  
	 Section 1.02
	    	 Classification of Loans and Borrowings
	  	 	28	  
	 Section 1.03
	    	 Terms Generally
	  	 	28	  
	 Section 1.04
	    	 Accounting Terms; GAAP
	  	 	29	  
		
	 ARTICLE II THE CREDITS
	  	 	29	  
			
	 Section 2.01
	    	 Commitments
	  	 	29	  
	 Section 2.02
	    	 Loans and Borrowings
	  	 	31	  
	 Section 2.03
	    	 Requests for Borrowings
	  	 	31	  
	 Section 2.04
	    	 Extension of Maturity Date
	  	 	32	  
	 Section 2.05
	    	 Swing Line Loan
	  	 	34	  
	 Section 2.06
	    	 Letters of Credit
	  	 	36	  
	 Section 2.07
	    	 Funding of Borrowings
	  	 	43	  
	 Section 2.08
	    	 Interest Elections
	  	 	43	  
	 Section 2.09
	    	 Termination and Reduction of Commitments
	  	 	45	  
	 Section 2.10
	    	 Repayment of Loans; Evidence of Debt
	  	 	46	  
	 Section 2.11
	    	 Prepayment of Loans
	  	 	47	  
	 Section 2.12
	    	 Fees
	  	 	47	  
	 Section 2.13
	    	 Interest
	  	 	49	  
	 Section 2.14
	    	 Alternate Rate of Interest
	  	 	50	  
	 Section 2.15
	    	 Increased Costs
	  	 	50	  
	 Section 2.16
	    	 Break Funding Payments
	  	 	52	  
	 Section 2.17
	    	 Taxes
	  	 	52	  
	 Section 2.18
	    	 Payments Generally; Pro Rata Treatment; Sharing of Set-offs
	  	 	56	  
	 Section 2.19
	    	 Mitigation Obligations; Replacement of Lenders
	  	 	57	  
	 Section 2.20
	    	 Nature of Obligations
	  	 	59	  
		
	 ARTICLE III REPRESENTATIONS AND WARRANTIES
	  	 	59	  
			
	 Section 3.01
	    	 Organization; Powers
	  	 	59	  
	 Section 3.02
	    	 Authorization; Enforceability
	  	 	60	  
	 Section 3.03
	    	 Governmental Approvals; No Conflicts
	  	 	60	  
	 Section 3.04
	    	 Financial Condition
	  	 	60	  
	 Section 3.05
	    	 Litigation
	  	 	60	  
	 Section 3.06
	    	 Environmental Matters
	  	 	61	  
	 Section 3.07
	    	 Disclosure
	  	 	61	  
	 Section 3.08
	    	 Solvency
	  	 	61	  
	 Section 3.09
	    	 ERISA
	  	 	62	  
	 Section 3.10
	    	 Investment Company Status
	  	 	62	  
	 Section 3.11
	    	 Margin Securities
	  	 	62	  
	 Section 3.12
	    	 Sanctions; Anti-Corruption; Money Laundering and Counter-Terrorist Financing Laws
	  	 	62	  
		
	 ARTICLE IV CONDITIONS
	  	 	63	  
			
	 Section 4.01
	    	 Effective Date
	  	 	63	  
	 Section 4.02
	    	 Each Credit Event
	  	 	65	  
	 Section 4.03
	    	 Defaulting Lenders
	  	 	65	  

  
 i 

 TABLE OF CONTENTS 

(continued) 
  

							
	 	    	 	  	Page	 
		
	 ARTICLE V AFFIRMATIVE COVENANTS
	  	 	66	  
			
	 Section 5.01
	    	 Financial Statements and Other Information
	  	 	66	  
	 Section 5.02
	    	 Notices of Material Events
	  	 	68	  
	 Section 5.03
	    	 Existence; Conduct of Business
	  	 	68	  
	 Section 5.04
	    	 Payment of Obligations
	  	 	69	  
	 Section 5.05
	    	 Maintenance of Properties; Insurance
	  	 	69	  
	 Section 5.06
	    	 Books and Records; Inspection Rights
	  	 	69	  
	 Section 5.07
	    	 Compliance with Laws
	  	 	69	  
	 Section 5.08
	    	 Use of Proceeds and Letters of Credit
	  	 	69	  
	 Section 5.09
	    	 Potential Subsidiary Guarantors
	  	 	70	  
	 Section 5.10
	    	 Maintenance of Ownership of Certain Subsidiaries
	  	 	70	  
		
	 ARTICLE VI NEGATIVE COVENANTS
	  	 	70	  
			
	 Section 6.01
	    	 Liens
	  	 	70	  
	 Section 6.02
	    	 Fundamental Changes
	  	 	71	  
	 Section 6.03
	    	 Restricted Payments
	  	 	71	  
	 Section 6.04
	    	 Restrictive Agreements
	  	 	72	  
	 Section 6.05
	    	 Affiliate Transactions
	  	 	73	  
	 Section 6.06
	    	 Change in Nature of Businesses
	  	 	73	  
	 Section 6.07
	    	 Financial Condition Covenants
	  	 	74	  
		
	 ARTICLE VII EVENTS OF DEFAULT
	  	 	74	  
		
	 ARTICLE VIII THE ADMINISTRATIVE AGENT
	  	 	77	  
			
	 Section 8.01
	    	 Appointment and Authority
	  	 	77	  
	 Section 8.02
	    	 Administrative Agent Individually
	  	 	78	  
	 Section 8.03
	    	 Duties of Administrative Agent; Exculpatory Provisions
	  	 	79	  
	 Section 8.04
	    	 Reliance by Administrative Agent
	  	 	80	  
	 Section 8.05
	    	 Delegation of Duties
	  	 	80	  
	 Section 8.06
	    	 Resignation of Administrative Agent
	  	 	80	  
	 Section 8.07
	    	 Non-Reliance on Administrative Agent and Other Lender Parties
	  	 	82	  
	 Section 8.08
	    	 No Other Duties, etc.
	  	 	83	  
	 Section 8.09
	    	 Trust Indenture Act
	  	 	83	  
	 Section 8.10
	    	 Resignation of an Issuing Bank
	  	 	83	  
		
	 ARTICLE IX MISCELLANEOUS
	  	 	83	  
			
	 Section 9.01
	    	 Notices
	  	 	83	  
	 Section 9.02
	    	 Posting of Approved Electronic Communications
	  	 	85	  
	 Section 9.03
	    	 Waivers; Amendments
	  	 	85	  
	 Section 9.04
	    	 Expenses; Indemnity; Damage Waiver
	  	 	87	  
	 Section 9.05
	    	 Successors and Assigns
	  	 	88	  
	 Section 9.06
	    	 Survival
	  	 	92	  

  
 ii 

 TABLE OF CONTENTS 

(continued) 
  

							
	 	    	 	  	Page	 
			
	 Section 9.07
	    	 Counterparts; Integration; Effectiveness
	  	 	92	  
	 Section 9.08
	    	 Severability
	  	 	92	  
	 Section 9.09
	    	 Right of Setoff
	  	 	93	  
	 Section 9.10
	    	 Governing Law; Jurisdiction; Consent to Service of Process
	  	 	93	  
	 Section 9.11
	    	 WAIVER OF JURY TRIAL
	  	 	94	  
	 Section 9.12
	    	 Headings
	  	 	94	  
	 Section 9.13
	    	 Confidentiality
	  	 	94	  
	 Section 9.14
	    	 Treatment of Information
	  	 	95	  
	 Section 9.15
	    	 Interest Rate Limitation
	  	 	97	  
	 Section 9.16
	    	 No Waiver; Remedies
	  	 	97	  
	 Section 9.17
	    	 Liability of General Partner
	  	 	97	  
	 Section 9.18
	    	 USA Patriot Act Notice
	  	 	97	  
	 Section 9.19
	    	 No Advisory or Fiduciary Responsibility
	  	 	97	  
	 Section 9.20
	    	 GP Buy-in
	  	 	98	  
	 Section 9.21
	    	 Merger
	  	 	98	  
	 Section 9.22
	    	 Amendment and Restatement
	  	 	99	  

  

					
	SCHEDULES:	 		  	
			
	Schedule 2.01	 	-	  	Commitments of Revolving Lenders
	Schedule 2.06	 	-	  	Existing Letters of Credit
	Schedule 6.04	 	-	  	Restrictive Agreements

  

					
	EXHIBITS:	 		  	
			
	Exhibit A	 	-	  	Form of Assignment and Acceptance
	Exhibit B-1	 	-	  	Form of Borrowing Request
	Exhibit B-2	 	-	  	Form of Swing Line Borrowing Notice
	Exhibit C	 	-	  	Form of Interest Election Request
	Exhibit D	 	-	  	Form of Compliance Certificate
	Exhibit E	 	-	  	Form of Note
	Exhibit F	 	-	  	Form of U.S. Tax Compliance Certificate

  
 iii 

 SECOND AMENDED & RESTATED CREDIT AGREEMENT 

This Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as amended, restated, supplemented or otherwise
modified from time to time, the “Agreement”), is among ACCESS MIDSTREAM PARTNERS, L.P., a Delaware limited partnership (to be re-named Williams Partners L.P.) (“WPZ”), NORTHWEST PIPELINE LLC, a Delaware limited
liability company (“NWP”), TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC, a Delaware limited liability company (“TGPL”), the LENDERS party hereto, and CITIBANK, N.A., as Administrative Agent. 

The parties hereto agree as follows: 

ARTICLE I 
 DEFINITIONS
AND ACCOUNTING TERMS 
 Section 1.01 Defined Terms. As used in this Agreement, the following terms have the meanings
specified below: 
 “ABR”, when used in reference to any Loan or Borrowing, refers to a Loan, or Loans, in the case of a
Borrowing, which bear interest at a rate determined by reference to the Alternate Base Rate. 
 “Acquisition Adjustment
Period” means (i) initially, the period commencing on the Effective Date and ending on the earlier of (a) the last day of the second fiscal quarter next succeeding the fiscal quarter in which the Effective Date occurred; or
(b) WPZ’s election to terminate such Acquisition Adjustment Period, such election to be exercised by WPZ delivering notice thereof to the Administrative Agent and (ii) thereafter, a period elected by WPZ, such election to be exercised
by WPZ by delivering notice thereof to the Administrative Agent, beginning with the funding date of the purchase price for any Specified Acquisition and ending on the earlier of (a) the last day of the second fiscal quarter next succeeding the
fiscal quarter in which the Specified Acquisition was consummated; or (b) WPZ’s election to terminate such Acquisition Adjustment Period, such election to be exercised by WPZ delivering notice thereof to the Administrative Agent. 

“Activities” has the meaning specified in Section 8.02(b). 

“ACMP Merger” means the transactions contemplated by the Agreement and Plan of Merger dated as of October 24, 2014, by
and among Access Midstream Partners, L.P., a Delaware limited partnership, Access Midstream Partners GP, L.L.C., VHMS LLC, Williams Partners L.P. and Williams Partners GP LLC. 

“Added L/C Effective Date” has the meaning set forth in Section 2.06(l). 

“Added L/C Representations” means representations and warranties made in letter of credit applications with respect to Added
Letters of Credit that are in addition to or inconsistent with the representations contained in Article III. 
 “Added Letter
of Credit” has the meaning set forth in Section 2.06(l). 

 “Administrative Agent” means Citibank, N.A., in its capacity as administrative
agent for the Lenders hereunder. 
 “Administrative Questionnaire” means an Administrative Questionnaire in a form supplied
by the Administrative Agent. 
 “Affiliate” means, with respect to a specified Person, another Person that directly, or
indirectly through one or more intermediaries, Controls or is Controlled by or is under common Control with the Person specified. 

“Agent’s Group” has the meaning specified in Section 8.02(b). 

“Aggregate Commitments” means the aggregate amount of all of the Revolving Lenders’ Commitments for all of the
Borrowers. The initial Aggregate Commitments as of the Effective Date are $3,500,000,000. 
 “Aggregate Outstanding Credit
Exposure” means, at any time, the aggregate of the outstanding Credit Exposures of all the Revolving Lenders at such time. 

“Alternate Base Rate” means, for any day, a rate per annum equal to the greatest of (a) the Prime Rate in effect on such
day, (b) the Federal Funds Effective Rate in effect on such day plus  1⁄2 of 1% and (c) the LIBO Rate for a one month Interest Period that
begins on such day (and if such day is not a Business Day, the immediately preceding Business Day) plus 1%. Any change in the Alternate Base Rate due to a change in the Prime Rate, the Federal Funds Effective Rate or the LIBO Rate shall be effective
from and including the effective date of such change in the Prime Rate or the Federal Funds Effective Rate, respectively. 

“Applicable Percentage” means, with respect to any Revolving Lender, the percentage of the Aggregate Commitments represented
by such Lender’s Commitment. If the Aggregate Commitments have terminated or expired, the Applicable Percentages shall be determined based upon the Aggregate Commitments most recently in effect, giving effect to any assignments. 

“Applicable Rate” means for any day (a) with respect to the Loans made to each Borrower, the applicable rate per annum
set forth below under the caption “Eurodollar Spread” for Loans comprising Eurodollar Borrowings or “ABR Spread” for Loans comprising ABR Borrowings, as the case may be, based upon the ratings by Moody’s and S&P,
respectively, applicable on such date to the Index Debt for such Borrower, or (b) with respect to the commitment fees payable hereunder, the rate per annum set forth below under the caption “Commitment Rate” based upon the ratings by
Moody’s and S&P, respectively, applicable on such date to the Index Debt for WPZ. 

  
 2 

													
	 Index Debt Ratings: (S&P/Moody’s)
	  	Eurodollar
Spread	 	 	ABR Spread	 	 	Commitment Rate	 
	 Category 1 3 BBB+ / Baa1
	  	 	1.125	% 	 	 	0.125	% 	 	 	0.125	% 
	 Category 2 BBB / Baa2
	  	 	1.250	% 	 	 	0.250	% 	 	 	0.175	% 
	 Category 3 BBB- / Baa3
	  	 	1.500	% 	 	 	0.500	% 	 	 	0.200	% 
	 Category 4 BB+ / Ba1
	  	 	1.625	% 	 	 	0.625	% 	 	 	0.275	% 
	 Category 5 £ BB / Ba2
	  	 	1.750	% 	 	 	0.750	% 	 	 	0.300	% 

 For purposes of the foregoing, with respect to each Borrower (i) if only one of Moody’s and S&P shall have in
effect a rating for the Index Debt, then the other rating agency shall be deemed to have established a rating in the same Category as such agency; (ii) if each of Moody’s and S&P shall have in effect a rating for the Index Debt, and
such ratings shall fall within different Categories, the Applicable Rate shall be based on (A) if the difference is one Category, the higher of the two ratings, and (B) if the difference is more than one Category, the rating one Category
below the higher of the two ratings; and (iii) if the ratings established or deemed to have been established by Moody’s and S&P for the Index Debt shall be changed (other than as a result of a change in the rating system of
Moody’s or S&P), such change shall be effective as of the date on which it is first announced by the applicable rating agency. Each change in the Applicable Rate shall apply during the period commencing on the effective date of such change
and ending on the date immediately preceding the effective date of the next such change. If neither Moody’s nor S&P shall have in effect a rating for the Index Debt, then the ratings for the Index Debt shall be deemed to fall within
Category 5. If the rating system of Moody’s or S&P shall change, or if any such rating agency shall cease to be in the business of rating corporate debt obligations, the Borrowers and the Lenders shall negotiate in good faith to amend this
definition to reflect such changed rating system or the unavailability of ratings from such rating agency and, pending the effectiveness of any such amendment, the Applicable Rate shall be determined by reference to the rating most recently in
effect prior to such change or cessation. 
 “Approved Electronic Communications” means each Communication that any
Borrower is obligated to, or otherwise chooses to, provide to the Administrative Agent pursuant to any Loan Document or the transactions contemplated therein, including any financial statement, financial and other report, notice, request,
certificate and other information material. 
 “Approved Electronic Platform” has the meaning specified in
Section 9.02. 
 “Approved Fund” means any Fund that is administered or managed by (a) a Lender,
(b) an Affiliate of a Lender or (c) an entity or an Affiliate of an entity that administers or manages a Lender. 

  
 3 

 “Assignment and Acceptance” means an assignment and assumption entered into by a
Lender and an Eligible Assignee (with the consent of any party whose consent is required by Section 9.05), and accepted by the Administrative Agent, substantially in the form of Exhibit A or any other form approved by the
Administrative Agent. 
 “Attributable Obligation” of any Person means, with respect to any Sale and Leaseback Transaction
of such Person as of any particular time, the present value at such time discounted at the rate of interest implicit in the terms of the lease of the obligations of the lessee under such lease for net rental payments during the remaining term of the
lease (including any period for which such lease has been extended or may, at the option of such Person only, be extended). 

“Availability Period” means the period from and including the Effective Date to but excluding the earlier of the Maturity
Date and the date of termination of the Aggregate Commitments. 
 “Bankruptcy Code” means Title 11 of the United States
Code, as now or hereafter in effect, or any successor thereto. 
 “Beneficial Owner” has the meaning assigned to such term
in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” will be deemed
to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only upon the occurrence of a
subsequent condition. The terms “Beneficially Owns” and “Beneficially Owned” have correlative meanings. 

“Borrower” means any of (a) WPZ, (b) until the date on which NWP delivers to the Agent a certificate requesting
that it be removed as a Borrower, NWP and (c) until the date on which TGPL delivers to the Agent a certificate requesting that it be removed as a Borrower, TGPL and “Borrowers” means, collectively, all of the Borrowers at such
time. 
 “Borrower Sublimit” has the meaning set forth in Section 2.01(a). 

“Borrowing” means Loans of the same Type, made, converted or continued on the same date and, in the case of Eurodollar Loans,
as to which a single Interest Period is in effect. 
 “Borrowing Request” means a request by a Borrower for a Borrowing in
accordance with Section 2.03, and being in the form of attached Exhibit B-1. 
 “Business Day” means any
day that is not a Saturday, Sunday or other day on which commercial banks in New York City are authorized or required by law to remain closed; provided that, when used in connection with a Eurodollar Loan, the term “Business
Day” shall also exclude any day on which banks are not open for dealings in dollar deposits in the London interbank market. 

“Capital Lease Obligations” of any Person means the obligations of such Person to pay rent or other amounts under any lease
of real or personal property, or a combination thereof, which obligations are required under GAAP to be classified and accounted for as capital leases 

  
 4 

 
on a balance sheet of such Person, and the amount of such obligations shall be the capitalized amount thereof determined in accordance with GAAP; provided that (a) any lease that was
treated as an operating lease under GAAP at the time it was entered into that later becomes a capital lease as a result of a change in GAAP during the life of such lease, including any renewals, and (b) any lease entered into after the date of
this Agreement that would have been considered an operating lease under the provisions of GAAP in effect as of December 31, 2014, in each case, shall be treated as an operating lease for all purposes under this Agreement. 

“Capital Stock” means: 

(a) in the case of a corporation, corporate stock; 

(b) in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however
designated) of corporate stock; 
 (c) in the case of a partnership or limited liability company, partnership or membership interests
(whether general or limited); and 
 (d) any other interest or participation that confers on a Person the right to receive a share of the
profits and losses of, or distributions of assets of, the issuing Person. 
 “Cash Collateralize” means, in respect of an
obligation, provide and pledge (as a first priority perfected security interest) cash collateral in Dollars, at a location and pursuant to documentation in form and substance reasonably satisfactory to the Administrative Agent, the Issuing Banks and
the Swing Line Lender (and “Cash Collateralization” has a corresponding meaning). 
 “Change in Control”
means the occurrence of any of the following: 
 (a) the direct or indirect sale, lease, transfer, conveyance or other disposition (other
than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the General Partner to any “person” (as that term is used in Section 13(d)(3) of the
Exchange Act), other than Williams or one of its other Subsidiaries; 
 (b) the adoption of a plan relating to the liquidation or
dissolution of WPZ or the General Partner; 
 (c) any Person other than Williams or any of its Subsidiaries becomes the Beneficial Owner,
directly or indirectly, of 50% or more of the Voting Stock of the General Partner; or 
 (d) the first day on which a majority of the
members of the Board of Directors of the General Partner are not Continuing Directors. 
 “Change in Law” means the
occurrence, after the date of this Agreement, of any of the following: (a) the adoption of any law, rule, regulation or treaty, (b) any change in any law, rule, regulation or treaty or in the administration, interpretation, implementation
or application thereof by any Governmental Authority or (c) the making or issuance of, and compliance by the relevant 

  
 5 

 
Lender or Issuing Bank with, any request, guideline or directive (whether or not having the force of law) by any Governmental Authority; provided that notwithstanding anything herein to
the contrary, (x) the Dodd-Frank Wall Street Reform and Consumer Protection Act and all requests, rules, guidelines or directives thereunder or issued in connection therewith and (y) all requests, rules, guidelines or directives
promulgated by the Bank for International Settlements, the Basel Committee on Banking Supervision (or any successor or similar authority) or the United States or foreign regulatory authorities, in each case pursuant to Basel III, shall in each case
be deemed to be a “Change in Law”, regardless of the date enacted, adopted or issued. 
 “Closing Date” means
February 2, 2015. 
 “Code” means the Internal Revenue Code of 1986, as amended from time to time. 

“Commercial Operation Date” means the date on which a Material Project is substantially complete and commercially operable.

 “Commitment” means, with respect to any Revolving Lender, the commitment of such Lender to make Loans, participate in
Swing Line Loans, and to acquire participations in Letters of Credit, expressed as an amount representing the maximum aggregate amount of such Lender’s Credit Exposure hereunder, as such commitment may be (a) reduced from time to time
pursuant to Section 2.09 and (b) increased from time to time pursuant to Section 2.01 or assignments by or to such Lender pursuant to Section 9.05. The initial amount of each Revolving Lender’s
Commitment is set forth on Schedule 2.01, or in the Assignment and Acceptance pursuant to which such Lender shall have assumed its Commitment, as applicable. 

“Communications” means each notice, demand, communication, information, document and other material provided for hereunder or
under any other Loan Document or otherwise transmitted between the parties hereto relating to this Agreement, the other Loan Documents, any Borrower or their respective Affiliates, or the transactions contemplated by this Agreement or the other Loan
Documents including, without limitation, all Approved Electronic Communications. 
 “Consolidated EBITDA” means, for any
period (without duplication) and for any Person, consolidated net income of such Person and its consolidated Subsidiaries for such period, plus (a) each of the following to the extent deducted in determining such consolidated net income
(i) all Consolidated Interest Expense, (ii) all income Taxes and franchise Taxes of such Person and its consolidated Subsidiaries for such period, (iii) all depreciation, depletion and amortization (including amortization of goodwill
and debt issuance costs) of such Person and its consolidated Subsidiaries for such period, (iv) any other non-cash charges or losses of such Person and its consolidated Subsidiaries for such period, including asset impairments, write-downs or
write-offs, (v) the amount of charges, fees or expenses associated with any debt, including in connection with the repurchase or repayment thereof, including any premium and acceleration of fees or discounts and other expenses and
(vi) extraordinary or non-recurring losses, plus (b) the amount of cash dividends actually received during such period by such Person on a consolidated basis from unconsolidated Subsidiaries of such Person or other Persons (provided
that any such cash dividends actually received within thirty days after the last day of any fiscal quarter attributable to operations during such prior fiscal quarter shall be deemed to have been received

  
 6 

 
during such prior fiscal quarter and not in the fiscal quarter actually received) minus (c) each of the following (i) all non-cash items of income or gain of such Person and its
consolidated Subsidiaries which were included in determining such consolidated net income for such period, (ii) any cash payments made during such period in respect of items described in clause (a)(iv) above subsequent to the fiscal quarter in
which the relevant non-cash charges or losses were reflected as a charge in determining consolidated net income hereunder, (iii) equity earnings from unconsolidated Subsidiaries of such Person and (iv) extraordinary or non-recurring gains.
Consolidated EBITDA shall be subject to the adjustments set forth in the following clauses (A) through (C) for all purposes under this Agreement: 

(A) If, during the four fiscal quarter period ending on the date for which Consolidated EBITDA is determined, such Person, any Subsidiary of
such Person or any entity with respect to which such Person holds an equity method investment shall have made any acquisition of assets, shall have consolidated or merged with or into any Person, or shall have made an acquisition of any Person,
Consolidated EBITDA may, at such Person’s option, be calculated giving pro forma effect thereto, without duplication, as if the acquisition, consolidation or merger had occurred on the first day of such period. Such pro forma effect shall be
determined in good faith by a Financial Officer of such Person. 
 (B) Consolidated EBITDA shall be increased by the amount of any
applicable Material Project EBITDA Adjustments applicable to such period. 
 (C) Consolidated EBITDA of WPZ for the four fiscal quarter
periods ended December 31, 2014 and March 31, 2015 shall, without duplication, be increased by Consolidated EBITDA of Pre-Merger WPZ for such four fiscal quarter periods, as reasonably determined in good faith by a Financial Officer of
WPZ. 
 “Consolidated Indebtedness” means, with respect to any Person, the Indebtedness of such Person and its consolidated
Subsidiaries determined on a consolidated basis as of such date; provided that “Consolidated Indebtedness” with respect to WPZ as of December 31, 2014 shall be increased by the amount of Consolidated Indebtedness of Pre-Merger
WPZ as of such date. 
 “Consolidated Interest Expense” means, for any period, for any Person, all interest paid or accrued
during such period by such Person and its consolidated Subsidiaries on, and all fees and related charges in respect of, Consolidated Indebtedness which was deducted in determining consolidated net income during such period. 

“Consolidated Net Tangible Assets” means, at any date of determination, the total amount of consolidated assets of WPZ and
its Subsidiaries after deducting therefrom: (a) all current liabilities (excluding (i) any current liabilities that by their terms are extendable or renewable at the option of the obligor thereon to a time more than 12 months after the
time as of which the amount thereof is being computed, and (ii) current maturities of long-term debt); and (b) the value (net of any applicable reserves and accumulated amortization) of all goodwill, trade names, trademarks, patents and
other like intangible assets, all as set forth, or on a pro forma basis would be set forth, on the consolidated balance sheet of WPZ and its Subsidiaries for the most recently completed fiscal quarter, prepared in accordance with GAAP. 

  
 7 

 “Consolidated Net Worth” means as to any Person, at any date of determination,
the sum of (a) preferred stock (if any), (b) an amount equal to the face amount of outstanding Hybrid Securities not in excess of 15% of Consolidated Total Capitalization, (c) par value of common stock, (d) capital in excess of
par value of common stock, (e) partners’ capital or equity, and (f) retained earnings, less treasury stock (if any), of such Person, all as determined on a consolidated basis. 

“Consolidated Total Capitalization” means as to any Person, the sum of (a) Consolidated Indebtedness and (b) such
Person’s Consolidated Net Worth. 
 “Continuing Directors” means, as of any date of determination, any member of the
Board of Directors of the General Partner who: 
 (a) was a member of such Board of Directors on the date of this Agreement; or 

(b) was nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing Directors who were
members of such Board of Directors at the time of such nomination or election. 
 “Control” means the possession, directly
or indirectly, of the power to direct or cause the direction of the management or policies of a Person, whether through the ability to exercise voting power, by contract or otherwise. “Controlling” and “Controlled”
have meanings correlative thereto. 
 “Credit Exposure” means, with respect to any Revolving Lender at any time, the sum of
the outstanding principal amount of such Lender’s Loans, its LC Exposure and its obligation to purchase participations in the Swing Line Loans at such time. 

“Declining Lender” has the meaning specified in Section 2.04(b). 

“Default” means any event or condition which constitutes an Event of Default or which upon notice, lapse of time or both
would, unless cured or waived, become an Event of Default. 
 “Defaulting Lender” means, at any time, a Revolving Lender as
to which the Administrative Agent (or, in the case of a Lender that is itself the Administrative Agent, any Issuing Bank with a Letter of Credit Commitment in excess of $100,000,000) has notified WPZ that (a) such Lender has failed for three or
more Business Days to comply with its obligations under this Agreement to make a Loan, make a payment to an Issuing Bank in respect of an LC Disbursement, or make a payment to the Swing Line Lender in respect of a Swing Line Loan, except for such
failure being contested in good faith by appropriate proceedings (each a “funding obligation”), (b) such Lender has notified the Administrative Agent, or has stated publicly, that it will not comply with any such funding
obligation hereunder or generally under other agreements in which it extends credit, (c) such Lender has, for three or more Business Days, failed to confirm in writing to the Administrative Agent (or, in the case of the Administrative Agent,
the Issuing Bank, the Swing Line Lender or Borrower making such request), in response to a written request of the Administrative Agent, any Issuing Bank with a Letter of Credit Commitment in excess of $100,000,000, the Swing Line Lender or a
Borrower, that it will comply with its funding obligations hereunder (provided that such Lender shall cease to be a Defaulting Lender 

  
 8 

 
pursuant to this clause (c) upon receipt of such written confirmation by the Administrative Agent and the Borrower), or (d) a Lender Insolvency Event has occurred and is
continuing with respect to such Lender (provided that neither the reallocation of funding obligations provided for in Section 2.06(k) as a result of a Lender’s being a Defaulting Lender nor the performance by Non-Defaulting
Lenders of such reallocated funding obligations will by themselves cause the relevant Defaulting Lender to become a Non-Defaulting Lender); provided, that (i) if a Lender would be a “Defaulting Lender” solely by reason of
events relating to the Parent Company of such Lender or solely because a Governmental Authority has been appointed as receiver, conservator, trustee or custodian for such Lender, in each case as described in clause (d) above, the
Administrative Agent (or applicable Issuing Bank or the Swing Line Lender) may, in its discretion, determine that such Lender is not a “Defaulting Lender” if and for so long as the Administrative Agent (or applicable Issuing Bank or the
Swing Line Lender) is satisfied that such Lender will continue to perform its funding obligations hereunder, (ii) the Administrative Agent (or applicable Issuing Bank or the Swing Line Lender) may, by notice to the Borrowers and the Lenders,
declare that a Defaulting Lender is no longer a “Defaulting Lender” if the Administrative Agent (or applicable Issuing Bank or the Swing Line Lender) determines, in its discretion, that the circumstances that resulted in such Lender
becoming a “Defaulting Lender” no longer apply and (iii) a Lender shall not be a Defaulting Lender solely by virtue of the ownership or acquisition of Voting Stock or any other Equity Interest in such Lender or a Parent Company
thereof or the exercise of any voting rights in connection therewith by a Governmental Authority or an instrumentality thereof. Any determination that a Lender is a Defaulting Lender under clauses (a) through (d) above will
be made by the Administrative Agent in its sole discretion acting in good faith, provided that the determination that the Administrative Agent is a Defaulting Lender under clauses (a) through (d) above may be made by
any Issuing Bank with a Letter of Credit Commitment in excess of $100,000,000 at the time of such determination or by the Swing Line Lender, in each case in its sole discretion acting in good faith. The Administrative Agent (or applicable Issuing
Bank or the Swing Line Lender) will promptly send to all parties hereto a copy of any notice to WPZ provided for in this definition. For avoidance of doubt (A) an assignee of a Defaulting Lender shall not be deemed to be a Defaulting Lender
solely by virtue of the fact that it is an assignee of a Defaulting Lender and (B) when a Defaulting Lender ceases to be a Defaulting Lender (due to assignment to a new Lender, commitment reduction pursuant to Section 2.09(d),
clause (ii) of the proviso of this definition of Defaulting Lender, or otherwise), all cash collateral in connection with such Defaulting Lender with respect to Letters of Credit or Swing Line Loans under Section 2.06(j)(ii) shall
be promptly released to the applicable Borrower and all commitment reallocations under Section 2.06(k) shall be promptly adjusted. 

“Discovery” means Discovery Producer Services LLC, a Delaware limited liability company, and its successors and assigns. 

“Dollars” or “$” refers to lawful money of the United States of America. 

“Effective Date” means the date on or prior to February 2, 2015, specified in the notice referred to in the last
sentence of Section 4.01. 
 “Eligible Assignee” means (a) a Lender, (b) an Affiliate of a Lender,
(c) an Approved Fund, and (d) any other Person (other than a natural person) approved by (i) the Administrative Agent, (ii) the Issuing Banks, (iii) the Swing Line Lender and (iv) unless an Event of Default has

  
 9 

 
occurred and is continuing, WPZ (each such approval not to be unreasonably withheld or delayed); provided that notwithstanding the foregoing, “Eligible Assignee” shall not
include WPZ or any of WPZ’s Affiliates. 
 “Environmental Laws” means all laws, rules, regulations, codes, ordinances,
orders, decrees, judgments, injunctions, notices or binding agreements issued, promulgated or entered into by any Governmental Authority, relating to the environment, preservation or reclamation of natural resources, or the management, release or
threatened release of any Hazardous Material. 
 “Equity Interest” means shares of the Capital Stock, partnership
interests, membership interests in a limited liability company, beneficial interests in a trust or other equity interests in any Person, or any warrants, options or other rights to acquire such interests. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time. 

“ERISA Affiliate”, as to any applicable Person, means any trade or business (whether or not incorporated) that, together with
WPZ, is treated as a single employer under Section 414(b) or (c) of the Code or, solely for purposes of Section 302 of ERISA and Section 412 of the Code, is treated as a single employer under Section 414 of the Code. 

“ERISA Event” means (a) any “reportable event”, as defined in Section 4043(c) of ERISA (other than a
“reportable event” not subject to the provision for 30-day notice to the PBGC or a “reportable event” as such term is described in Section 4043(c)(3) of ERISA) or the regulations issued thereunder with respect to a Plan
(other than an event for which the 30-day notice period is waived) which could reasonably be expected to result in a termination of, or the appointment of a trustee to administer, a Plan; (b) the existence with respect to any Plan of an
“accumulated funding deficiency” (as defined in Section 412 of the Code or Section 302 of ERISA), whether or not waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d) of ERISA of an
application for a waiver of the minimum funding standard with respect to any Plan; (d) the incurrence by WPZ or any of its ERISA Affiliates of any liability under Title IV of ERISA with respect to the termination of any Plan; (e) the
receipt by WPZ or any ERISA Affiliate from the PBGC or a plan administrator of any notice relating to an intention to terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f) the incurrence by WPZ or any of its ERISA
Affiliates of any liability with respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan during a plan year in which it was a “substantial employer,” as such term is defined in Section 4001(a)(2) of ERISA;
or (g) the receipt by WPZ or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan from WPZ or any ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability or a determination that a Multiemployer
Plan is, or is expected to be, insolvent or in reorganization, within the meaning of Title IV of ERISA, other than (in the case of clauses (a) through (f) of this definition) where the matters described in such clauses, in the
aggregate, could not reasonably be expected to have a Material Adverse Effect. 
 “Eurocurrency Liabilities” has the
meaning assigned to that term in Regulation D of the Board of Governors of the Federal Reserve System of the United States of America, as in effect from time to time. 

  
 10 

 “Eurodollar”, when used in reference to any Loan or Borrowing, refers to a Loan,
or Loans, in the case of a Borrowing, which bear interest at a rate determined by reference to the LIBO Rate (other than Swing Line Loans and Borrowings thereof). 

“Eurodollar Rate Reserve Percentage” of any Lender for any Interest Period for each Eurodollar Borrowing means the reserve
percentage applicable during such Interest Period (or if more than one such percentage shall be so applicable, the daily average of such percentages for those days in such Interest Period during which any such percentage shall be so applicable)
under regulations issued from time to time by the Board of Governors of the Federal Reserve System of the United States of America for determining the maximum reserve requirement (including, without limitation, any emergency, supplemental or other
marginal reserve requirement) for such Lender with respect to liabilities or assets consisting of or including Eurocurrency Liabilities having a term equal to such Interest Period. 

“Event of Default” has the meaning assigned to such term in Article VII. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 

“Excluded Taxes” means, any of the following Taxes imposed on or with respect to a Recipient or required to be withheld or
deduct from a payment to a Recipient, (a) Taxes imposed on or measured by net income (however denominated), franchise Taxes, and branch profits Taxes, in each case, (i) imposed as a result of such Recipient being organized under the laws
of, or having its principal office, or, in the case of any Lender, its applicable lending office located in, the jurisdiction imposing such Tax (or any political subdivision thereof) or (ii) that are Other Connection Taxes, (b) in the case
of a Lender (other than an assignee pursuant to a request by the Borrowers under Section 2.19(b)), any U.S. Federal withholding Tax that is imposed on amounts payable to such Lender at the time such Lender becomes a party to this
Agreement (or designates a new lending office), except to the extent that such Lender (or its assignor, if any) was entitled, at the time of designation of a new lending office (or assignment), to receive additional amounts from a Borrower with
respect to such withholding Tax pursuant to Section 2.17(a), (c) any U.S. Federal withholding Tax that is attributable to such Lender’s failure to comply with Section 2.17(f) and (d) any U.S. Federal
withholding Taxes imposed by FATCA. 
 “Existing ACMP Credit Agreement” means the Second Amended and Restated Credit
Agreement among Access Midstream Partners, L.P., a Delaware limited partnership, Access MLP Operating, L.L.C., Wells Fargo Bank, National Association, as administrative agent and the several lenders from time to time parties thereto dated as of
May 13, 2013. 
 “Existing Credit Agreement” means the First Amended & Restated Credit Agreement dated as of
July 31, 2013 among WPZ (as successor by merger to Pre-Merger WPZ), NWP, TGPL, the lenders party thereto and Citibank, N.A., as administrative agent, as amended prior to the Effective Date. 

“Existing Letters of Credit” means all letters of credit listed on Schedule 2.06. 

“Extending Lender” has the meaning specified in Section 2.04(b). 

“Extension Confirmation Date” has the meaning specified in Section 2.04(c). 

  
 11 

 “Extension Effective Date” has the meaning specified in
Section 2.04(c). 
 “Extension Request” has the meaning specified in Section 2.04(a). 

“FATCA” means Sections 1471 through 1474 of the Code, as of the date of this Agreement (or any amended or successor version
that is substantively comparable and not materially more onerous to comply with), any current or future regulations or official interpretations thereof, any applicable intergovernmental agreements between a non-U.S. jurisdiction and the United
States with respect thereto, any law, regulations, or other official guidance enacted in a non-U.S. jurisdiction relating to an intergovernmental agreement related thereto, and any agreements entered into pursuant to Section 1471(b)(1) of the
Code. 
 “Federal Funds Effective Rate” means, for any day, the weighted average of the rates on overnight federal funds
transactions with members of the Federal Reserve System arranged by federal funds brokers, as published on the next succeeding Business Day by the Federal Reserve Bank of New York, or, if such rate is not so published for any day that is a
Business Day, the average of the quotations for such day for such transactions received by the Administrative Agent from three federal funds brokers of recognized standing selected by it. 

“Fee Letters” means (a) the letter agreement dated as of November 13, 2014 between WPZ and Citigroup Global Markets
Inc. and (b) the letter agreement dated as of November 13, 2014 among WPZ, Citigroup Global Markets Inc., Barclays Bank PLC, JPMorgan Chase Bank, N.A. and J.P. Morgan Securities LLC, The Royal Bank of Scotland plc, RBS Securities Inc., The
Bank of Nova Scotia, Wells Fargo Bank, N.A., Bank of America, N.A., Merrill Lynch, Pierce, Fenner & Smith Incorporated, UBS AG, Stamford Branch, UBS Securities LLC and Credit Agricole Corporate and Investment Bank. 

“Financial Officer” means (a) with respect to WPZ, the chief financial officer, principal accounting officer, treasurer
or controller of the General Partner and (b) with respect to any other Person, the chief financial officer, principal accounting officer, treasurer, assistant treasurer or controller of such Person or the governing body of such Person. 

“Financing Transaction” means, with respect to any Person (a) any prepaid forward sale of oil, gas or minerals by such
Person (other than gas balancing arrangements in the ordinary course of business), that is intended primarily as a borrowing of funds, excluding volumetric production payments and (b) any interest rate, currency, commodity or other swap,
collar, cap, option or other derivative that is intended primarily as a borrowing of funds (excluding interest rate, currency, commodity or other swaps, collars, caps, options or other derivatives to hedge against risks for non-speculative
purposes), with the amount of the obligations of such Person thereunder being the net obligations of such Person thereunder. 

“Foreign Lender” means any Lender that is not a U.S. Person. 

“Fund” means any Person (other than a natural person) that is (or will be) engaged in making, purchasing, holding or
otherwise investing in commercial loans and similar extensions of credit in the ordinary course of its business. 

  
 12 

 “GAAP” means generally accepted accounting principles in the United States of
America. 
 “General Partner” means the general partner of WPZ (including any permitted successors and assigns under the
Partnership Agreement). 
 “Governmental Authority” means the government of the United States of America or any other
nation, or of any political subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or
administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European Central Bank). 

“Guarantors” means each of (a) the Subsidiaries of WPZ that execute a Guaranty in accordance with
Section 5.09 hereof and (b) the respective successors of such Subsidiaries, in each case until such time as any such Subsidiary shall be released and relieved of its obligations pursuant to Section 5.09 hereof. 

“Guaranty” means a guaranty executed by any Guarantor in favor of the Administrative Agent and the Lenders in form and
substance reasonably agreed to between WPZ and the Administrative Agent. 
 “Hazardous Materials” means all explosive or
radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos containing materials, polychlorinated biphenyls, radon gas, infectious or medical
wastes and all other substances or wastes of any nature, in each case regulated pursuant to any Environmental Law. 
 “Hedging
Agreement” means a financial instrument or security which is used as a cash flow or fair value hedge to manage the risk associated with a change in interest rates, foreign currency exchange rates or commodity prices. 

“Hybrid Securities” means any trust preferred securities, or deferrable interest subordinated debt with a tenor of at least
20 years, which provides for the optional or mandatory deferral of interest or distributions, issued by any Borrower, or any business trusts, limited liability companies, limited partnerships or similar entities (a) substantially all of
the common equity, general partner or similar interests of which are owned (either directly or indirectly through one or more wholly owned Subsidiaries) at all times by WPZ or any of its Subsidiaries, (b) that have been formed for the purpose
of issuing hybrid securities or deferrable interest subordinated debt, and (c) substantially all the assets of which consist of (i) subordinated debt of WPZ or a Subsidiary of WPZ, and (ii) payments made from time to time on the
subordinated debt. 
 “Hydrocarbon Interests” means all rights, titles, interests and estates now owned or hereafter
acquired by a Borrower or any of its Subsidiaries in any and all oil, gas and other liquid or gaseous hydrocarbon properties and interests, including without limitation, mineral fee or lease interests, production sharing agreements, concession
agreements, license agreements, service agreements, risk service agreements or similar Hydrocarbon interests granted by an 

  
 13 

 
appropriate Governmental Authority, farmout, overriding royalty and royalty interests, net profit interests, oil payments, production payment interests and similar interests in Hydrocarbons,
including any reserved or residual interests of whatever nature. 
 “Hydrocarbons” means oil, gas, casing head gas,
condensate, distillate, liquid hydrocarbons, gaseous hydrocarbons, all products refined, separated, settled and dehydrated therefrom, including, without limitation, kerosene, liquefied petroleum gas, refined lubricating oils, diesel fuel, drip
gasoline, natural gasoline, helium, sulfur and all other minerals. 
 “Indebtedness” of any Person at any date means,
without duplication, (a) all indebtedness of such Person for borrowed money, (b) all obligations of such Person evidenced by notes, bonds, debentures or other similar instruments (other than surety, performance and guaranty bonds),
(c) all obligations of such Person for the deferred purchase price of property or services (other than trade payables), which obligation is, individually, in excess of $100,000,000, (d) all Capital Lease Obligations of such Person,
(e) all obligations of such Person under any Financing Transaction, (f) all Attributable Obligations of such Person with respect to any Sale and Leaseback Transaction, and (g) all obligations of such Person under guaranties in respect
of, and obligations (contingent or otherwise) to purchase or otherwise acquire, or otherwise to assure a creditor against loss in respect of, Indebtedness or obligations of others of the kinds referred to in clauses (a) through (f) of this
definition; provided that Indebtedness shall not include (1) Non-Recourse Debt, (2) Performance Guaranties, (3) monetary obligations or guaranties of monetary obligations of Persons as lessee under leases (other than, to the
extent provided hereinabove, Attributable Obligations) that are, in accordance with GAAP, recorded as operating leases, (4) any obligations of such Person under volumetric production payment arrangements, (5) International Debt and
(6) guarantees by such Person of obligations of others which are not obligations described in clauses (a) through (f) of this definition, and provided further that where any such indebtedness or obligation of such Person is
made jointly, or jointly and severally, with any third party or parties other than any Subsidiary of such Person, the amount thereof for the purpose of this definition only shall be the pro rata portion thereof payable by such Person, so long as
such third party or parties have not defaulted on its or their joint and several portions thereof and can reasonably be expected to perform its or their obligations thereunder. For the avoidance of doubt, “Indebtedness” of a Person in
respect of letters of credit shall include, without duplication, only the principal amount of the unreimbursed obligations of such Person in respect of such letters of credit that have been drawn upon by the beneficiaries to the extent of the amount
drawn, and shall include no other obligations in respect of such letters of credit. 
 “Indemnified Taxes” means
(a) Taxes, other than Excluded Taxes, imposed on or with respect to any payment made by or on account of any obligation of a Borrower under any Loan Document, and (b) to the extent not otherwise described in clause (a), Other Taxes. 

“Index Debt” means, as to any Person, senior, unsecured, non-credit enhanced Indebtedness of such Person. 

“Information Memorandum” means the Confidential Information Memorandum dated November 12, 2014 relating to WPZ and the
Transactions. 

  
 14 

 “Interest Election Request” means a request by a Borrower to convert or continue
a Borrowing in accordance with Section 2.08, and being in the form of attached Exhibit C. 
 “Interest
Payment Date” means (a) with respect to any ABR Loan, the last Business Day of each March, June, September and December, and (b) with respect to any Eurodollar Loan, the last Business Day of the Interest Period applicable to the
Borrowing of which such Loan is a part and, in the case of a Eurodollar Borrowing with an Interest Period of more than three (3) months’ duration, each day that occurs an integral multiple of three (3) months after the first day of
such Interest Period. 
 “Interest Period” means with respect to any Eurodollar Borrowing, the period commencing on the
date of such Borrowing and ending on the numerically corresponding day in the calendar month that is one, two, three, six or, if available to all of the Lenders, 12 months thereafter, as a Borrower may elect; provided, that
(a) if any Interest Period would end on a day other than a Business Day, such Interest Period shall be extended to the next succeeding Business Day unless, in the case of a Eurodollar Borrowing only, such next succeeding Business Day would fall
in the next calendar month, in which case such Interest Period shall end on the next preceding Business Day and (b) any Interest Period pertaining to a Eurodollar Borrowing that commences on the last Business Day of a calendar month (or on a
day for which there is no numerically corresponding day in the last calendar month of such Interest Period) shall end on the last Business Day of the last calendar month of such Interest Period. For purposes of this definition, the date of a
Borrowing initially shall be the date on which such Borrowing is made and thereafter shall be the effective date of the most recent conversion or continuation of such Borrowing. 

“International Debt” means the Indebtedness of any International Subsidiary. 

“International Subsidiary” means any subsidiary of WPZ that is not incorporated or organized under the laws of the United
States of America, any State thereof or the District of Columbia. 
 “Investment Grade Rating” means a rating equal to or
higher than Baa3 (or the equivalent) by Moody’s or BBB- (or the equivalent) by S&P. 
 “Issuing Bank” means the
Persons listed on Schedule 2.01 with a Letter of Credit Commitment or any other Lender that has issued or agreed to issue Letters of Credit at the request of a Borrower after consultation with the Administrative Agent, in its capacity as the
issuer of such Letter of Credit, and “Issuing Banks” means, collectively, all of such Issuing Banks. 
 “Joint Lead
Arrangers” means Citigroup Global Markets Inc., Barclays Bank PLC, J.P. Morgan Securities LLC, RBS Securities Inc., The Bank of Nova Scotia, Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, UBS
Securities LLC and Credit Agricole Corporate and Investment Bank, as joint lead arrangers and joint book runners. 
 “LC
Disbursement” means a payment made by an Issuing Bank pursuant to a Letter of Credit. 

  
 15 

 “LC Exposure” means, at any time, the sum of (a) the aggregate undrawn
amount of all outstanding Letters of Credit at such time plus (b) the aggregate amount of all LC Disbursements that have not yet been reimbursed by or on behalf of the Borrowers at such time. The LC Exposure of any Revolving Lender at any time
shall be its Applicable Percentage of the total LC Exposure at such time. 
 “Lender Insolvency Event” means that
(a) a Lender or its Parent Company is insolvent, or is generally unable to pay its debts as they become due, or admits in writing its inability to pay its debts as they become due, or makes a general assignment for the benefit of its creditors,
or (b) such Lender or its Parent Company is the subject of a bankruptcy, insolvency, reorganization, liquidation or similar proceeding, or a receiver, trustee, conservator, intervenor or sequestrator or the like has been appointed for such
Lender or its Parent Company, or such Lender or its Parent Company has taken any action in furtherance of or indicating its consent to or acquiescence in any such proceeding or appointment. 

“Lender Party” means any Lender or any Issuing Bank. 

“Lender Party Appointment Period” has the meaning assigned in Section 8.06. 

“Lenders” means the Revolving Lenders and the Swing Line Lender. 

“Letter of Credit” means any letter of credit issued pursuant to this Agreement, including the Added Letters of Credit. 

“Letter of Credit Commitment” means, with respect to any Issuing Bank, the commitment of such Issuing Bank to issue Letters
of Credit hereunder, expressed as an amount representing the maximum aggregate amount of the LC Exposure with respect to Letters of Credit issued by such Issuing Bank and LC Disbursements with respect to Letters of Credit issued by such Issuing
Bank, as such commitment may be (a) reduced from time to time pursuant to Section 2.09, (b) increased or reduced pursuant to Section 2.01(c)(iii) or (c) terminated pursuant to Section 8.10. The
initial amount of each Issuing Bank’s Letter of Credit Commitment is set forth on Schedule 2.01. 
 “Letter of Credit
Documents” means with respect to any Letter of Credit, each letter of credit application and any other document, agreement and instrument entered into by an Issuing Bank and a Borrower (or by the Borrower on behalf of any Subsidiary of such
Borrower, as a co-applicant) or in favor of such Issuing Bank and relating to any such Letter of Credit. 
 “LIBO Rate”
means, with respect to any Eurodollar Borrowing for any Interest Period, the rate per annum equal to the London Interbank Offered Rate or a comparable or successor rate which rate is approved by the Administrative Agent, determined by reference to
the ICE Benchmark Administration (“ICE”) (or the successor thereto), as published on the applicable Reuters screen page (or such other commercially available source providing such quotations as may be designated by the
Administrative Agent from time to time and that has been nominated by ICE or its successor as an authorized information vendor for the purpose of displaying such rates) at approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period, for deposits in Dollars (for delivery on the first day of such Interest Period) with a term equivalent to such Interest Period (but if such rate is less than zero, such rate

  
 16 

 
shall be deemed to be zero for purposes of this Agreement); provided, however, that if such rate is not available, then such rate shall mean the rate per annum determined by the
Administrative Agent to be the average offered quotation rate by major banks in the London interbank market for dollar deposits of principal amounts comparable to such Eurodollar Borrowing with maturities comparable to such Interest Period so long
as such quotation rates are available to the Administrative Agent from two or more such banks. Each Borrower agrees, in the event the LIBO Rate is calculated in accordance with the proviso in the foregoing sentence, that the Administrative Agent
shall not be required to disclose to any Borrower the individual rates offered by any such bank nor the identity of any such bank, and that the Administrative Agent shall provide to the Borrowers only the average of such rates without disclosing the
rate quoted by any individual bank. 
 “Lien” means, with respect to any asset, (a) any mortgage, deed of trust, lien,
pledge, hypothecation, encumbrance, charge or security interest in, on or of such asset, and (b) the interest of a vendor or a lessor under any conditional sale agreement, capital lease or title retention agreement relating to such asset. 

“Loans” means the loans made by the Lenders to the Borrowers pursuant to this Agreement. 

“Loan Documents” means this Agreement, each Note, each Letter of Credit Document, the Fee Letters, the Guaranties and all
other agreements, certificates, documents, instruments and writings at any time delivered in connection herewith or therewith (exclusive of term sheets and commitment letters). 

“Material Adverse Effect” means a material adverse effect on (a) the financial condition, operations, or properties of
WPZ and its Subsidiaries, taken as a whole, provided however, (i) a downgrade by S&P and/or Moody’s of their respective rating of Index Debt of any Borrower shall not, in and of itself, be deemed to be a Material Adverse Effect,
and (ii) the fact that WPZ is unable to borrow in the commercial paper market shall not, in and of itself, be deemed to be a Material Adverse Effect; but for purposes of clarity in interpreting the foregoing clauses (i) and (ii), it is
agreed that the event(s), change(s), circumstance(s) or condition(s) that causes such downgrade (or an announcement of a potential downgrade or a review for possible ratings change) of the rating of Index Debt of any Borrower or that causes such
inability of WPZ to borrow in the commercial paper market, and the effect or change caused by such downgrade (or an announcement of a potential downgrade or a review for possible ratings change) of the rating of Index Debt of any Borrower or by such
inability to borrow, will be considered in determining whether there has been a Material Adverse Effect; or (b) the ability of WPZ and the Guarantors, if any, or any other Borrower, to perform their obligations, taken as a whole, under this
Agreement and the Notes, or (c) the validity or enforceability of this Agreement or the Notes. 
 “Material
Indebtedness” means, with respect to any Borrower, Indebtedness (other than the Loans), of any one or more of such Borrower and its Subsidiaries in an aggregate principal amount exceeding $100,000,000. 

  
 17 

 “Material Project” means, for any Person, the construction or expansion of any
capital project of such Person or any of its Subsidiaries or any entity with respect to which it holds an equity method investment, the aggregate capital cost of which exceeds $10,000,000. 

“Material Project EBITDA Adjustments” shall mean, for any Person, with respect to each Material Project of such Person: 

(A) prior to the Commercial Operation Date of a Material Project (but including the fiscal quarter in which such Commercial Operation Date
occurs), a percentage (based on the then-current completion percentage of such Material Project) of an amount to be approved by the Administrative Agent as the projected Consolidated EBITDA of such Person and its Subsidiaries attributable to such
Material Project for the first 12-month period following the scheduled Commercial Operation Date of such Material Project (such amount to be determined based on customer contracts or tariff-based customers relating to such Material Project, the
creditworthiness of the other parties to such contracts or such tariff-based customers, and projected revenues from such contracts, tariffs, capital costs and expenses, scheduled Commercial Operation Date, oil and gas reserve and production
estimates, commodity price assumptions and other factors reasonably deemed appropriate by Administrative Agent), which may, at such Person’s option, be added to actual Consolidated EBITDA for such Person and its Subsidiaries for the fiscal
quarter in which construction of such Material Project commences and for each fiscal quarter thereafter until the Commercial Operation Date of such Material Project (including the fiscal quarter in which such Commercial Operation Date occurs, but
net of any actual Consolidated EBITDA of such Person and its Subsidiaries attributable to such Material Project following such Commercial Operation Date); provided that if the actual Commercial Operation Date does not occur by the scheduled
Commercial Operation Date, then the foregoing amount shall be reduced, for quarters ending after the scheduled Commercial Operation Date to (but excluding) the first full quarter after its Commercial Operation Date, by the following percentage
amounts depending on the period of delay (based on the period of actual delay or then-estimated delay, whichever is longer): (i) 90 days or less, 0%, (ii) longer than 90 days, but not more than 180 days, 25%, (iii) longer than
180 days but not more than 270 days, 50%, and (iv) longer than 270 days, 100%; and 
 (B) beginning with the first full fiscal quarter
following the Commercial Operation Date of a Material Project and for the two immediately succeeding fiscal quarters, an amount to be approved by the Administrative Agent as the projected Consolidated EBITDA of such Person and its Subsidiaries
attributable to such Material Project (determined in the same manner as set forth in clause (A) above) for the balance of the four full fiscal quarter period following such Commercial Operation Date, which may, at such Person’s option, be
added to actual Consolidated EBITDA for such Person and its Subsidiaries for such fiscal quarters. 
 Notwithstanding the foregoing: 

(i) no such additions shall be allowed with respect to any Material Project unless: 

(a) not later than 30 days prior to the delivery of any certificate required by the terms and provisions of
Section 5.01(c) to the extent Material Project EBITDA Adjustments will be made to Consolidated EBITDA in determining compliance with 

  
 18 

 
Section 6.07(b), such Person shall have delivered to the Administrative Agent a written request for Material Project EBITDA Adjustments setting forth (i) the scheduled Commercial
Operation Date for such Material Project, (ii) pro forma projections of Consolidated EBITDA attributable to such Material Project, (iii) information, as applicable, regarding (A) customer contracts relating to such Material Project
(or negotiated settlements in connection with such Material Project), (B) the creditworthiness of the other parties to such contracts or settlements, as the case may be, (C) projected revenues from such contracts or settlements, as the
case may be, (D) projected capital costs and expenses, and (E) commodity price assumptions, and (iv) such other information previously requested by the Administrative Agent which it reasonably deemed necessary to approve such Material
Project EBITDA Adjustments, and 
 (b) prior to the date such certificate is required to be delivered, the Administrative
Agent shall have approved (such approval not to be unreasonably withheld) such projections and shall have received such other information and documentation as the Administrative Agent may reasonably request, all in form and substance satisfactory to
the Administrative Agent, and 
 (ii) the aggregate amount of all Material Project EBITDA Adjustments during any period shall be limited to
20% of the total actual Consolidated EBITDA of such Person and its Subsidiaries for such period (which total actual Consolidated EBITDA shall be determined without including any Material Project EBITDA Adjustments). 

Any Material Project EBITDA Adjustment with respect to any Material Project of an entity with respect to which such Person holds an equity
method investment shall be determined as set forth above, based upon the projected (prior to the Commercial Operation Date) and actual (on and after the Commercial Operation Date) cash dividends projected to be received or actually received by such
Person on a consolidated basis from such entity. 
 “Material Subsidiary” means, with respect to any Borrower, each
Subsidiary of such Borrower that, as of the last day of the fiscal year of such Borrower most recently ended prior to the relevant determination of Material Subsidiaries, has a net worth determined in accordance with GAAP that is greater than 10% of
the Consolidated Net Worth of such Borrower as of such day; provided that the Non-Recourse Subsidiaries shall not be deemed to be Material Subsidiaries for any purpose of this Agreement. 

“Maturity Date” means the fifth anniversary of the Effective Date, as the same may be extended pursuant to, and subject to
the terms and conditions of, Section 2.04. 
 “MLP Combination” has the meaning specified in
Section 6.02. 
 “Moody’s” means Moody’s Investors Service, Inc. or its successor. 

“Multiemployer Plan” means a multiemployer plan as defined in Section 4001(a)(3) of ERISA, which is maintained by (or to
which there is an obligation to contribute of) any Borrower or an ERISA Affiliate of any Borrower. 

  
 19 

 “Non-Defaulting Lender” means, at any time, a Revolving Lender that is not a
Defaulting Lender. 
 “Non-Recourse Debt” means any Indebtedness incurred by any Non-Recourse Subsidiary to finance the
acquisition, improvement, installation, design, engineering, construction, development, completion, maintenance or operation of, or otherwise to pay costs and expenses relating to or provide financing for, a project, which Indebtedness does not
provide for recourse against WPZ or any Subsidiary of WPZ (other than a Non-Recourse Subsidiary and such recourse as exists under a Performance Guaranty) or any property or asset of WPZ or any Subsidiary of WPZ (other than the Equity Interests in,
or the property or assets of, a Non-Recourse Subsidiary). Non-Recourse Debt may become or cease to become Non-Recourse Debt on the basis of whether it satisfies this definition at the time considered. 

“Non-Recourse Subsidiary” means (a) any subsidiary of WPZ (other than a Borrower or a Subsidiary of WPZ that is an
owner, directly or indirectly, of any Equity Interest in any Borrower) whose principal purpose is to incur Non-Recourse Debt and/or construct, lease, own or operate the assets financed thereby, or to become a direct or indirect partner, member or
other equity participant or owner in a Person created for such purpose, and substantially all the assets of which subsidiary and such Person are limited to (i) those assets being financed (or to be financed), or the operation of which is being
financed (or to be financed), in whole or in part by Non-Recourse Debt, or (ii) Equity Interests in, or Indebtedness or other obligations of, one or more other such Subsidiaries or Persons, or (iii) Indebtedness or other obligations of WPZ
or its Subsidiaries or other Persons and (b) any Subsidiary of a Non-Recourse Subsidiary. A Non-Recourse Subsidiary may become or cease to become a Non-Recourse Subsidiary on the basis of whether it satisfies this definition at the time
considered. 
 “Notes” means any promissory notes issued by a Borrower pursuant to Section 2.10(e). 

“Oil and Gas Agreements” means operating agreements, processing agreements, farm-out and farm-in agreements, development
agreements, area of mutual interest agreements, contracts for the gathering and/or transportation of oil and natural gas, unitization agreements, pooling arrangements, joint bidding agreements, joint venture agreements, participation agreements,
surface use agreements, service contracts, leases and subleases of Oil and Gas Properties or other similar agreements which are customary in the oil and gas business, howsoever designated, in each case made or entered into in the ordinary course of
the oil and gas business as conducted by the Borrowers and their Subsidiaries. 
 “Oil and Gas Properties” means
(a) Hydrocarbon Interests; (b) the property now or hereafter pooled or unitized with Hydrocarbon Interests; (c) all presently existing or future unitization, pooling agreements and declarations of pooled units and the units created
thereby (including, without limitation, all units created under orders, regulations and rules of any Governmental Authority) which may affect all or any portion of the Hydrocarbon Interests; (d) all operating agreements, contracts and other
agreements which relate to any of the Hydrocarbon Interests or the production, sale, purchase, exchange or processing of Hydrocarbons from or attributable to such Hydrocarbon Interest; (e) all Hydrocarbons in and under and which may be produced
and saved or attributable to the Hydrocarbon Interests, the lands covered thereby and all oil and other Hydrocarbons in tanks and all rents, issues, profits, proceeds, products, revenues 

  
 20 

 
and other income from or attributable to the Hydrocarbon Interests; and (f) all tenements, hereditaments, appurtenances and property in any manner appertaining, belonging, affixed or
incidental to the Hydrocarbon Interests, and any and all property, now owned or hereinafter acquired and situated upon, used, held for use or useful in connection with the operating, working or development of any of such Hydrocarbon Interests or
property (excluding drilling rigs, automotive equipment or other personal property which may be on such premises for the purpose of drilling a well or for other similar temporary uses) and including any and all oil wells, gas wells, injection wells
or other wells, buildings, structures, fuel separators, liquid extraction plants, plant compressors, pumps, pumping units, field gathering systems, tanks and tank batteries, fixtures, valves, fittings, machinery and parts, engines, boilers, meters,
apparatus, equipment, appliances, tools, implements, cables, wires, towers, casing, tubing and rods, surface leases, rights-of-way, easements and servitudes together with all additions, substitutions, replacements, accessions and attachments to any
and all of the foregoing. 
 “Other Connection Taxes” means, with respect to any Recipient, Taxes imposed as a result of a
present or former connection between such Recipient and the jurisdiction imposing such Tax (other than connections arising from such Recipient having executed, delivered, become a party to, performed its obligations under, received payments under,
received or perfected a security interest under, engaged in any other transaction pursuant to or enforced any Loan Document, or sold or assigned an interest in any Loans or Loan Document). 

“Other Taxes” means all present or future stamp, court or documentary, intangible, recording, filing or similar Taxes that
arise from any payment made under, from the execution, delivery, performance, enforcement or registration of, from the receipt or perfection of a security interest under, or otherwise with respect to, any Loan Document, except any such Taxes imposed
with respect to an assignment (other than an assignment made pursuant to Section 2.19). 
 “Parent Company”
means, with respect to a Lender, the bank holding company (as defined in Federal Reserve Board Regulation Y), if any, of such Lender, and/or any Person owning, beneficially or of record, directly or indirectly, a majority of the shares of such
Lender. 
 “Participant” has the meaning set forth in Section 9.05(d). 

“Participant Register” has the meaning set forth in Section 9.05(d). 

“Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership of Access Midstream Partners,
L.P. (f/k/a Chesapeake Midstream Partners, L.P.), dated as of August 3, 2010, as amended pursuant to Amendment No. 1, dated as of July 24, 2012, as amended pursuant to Amendment No. 2, dated as of December 20, 2012, as
amended pursuant to Amendment No. 3 dated as of January 29, 2015, as further modified from time to time. 

“PBGC” means the Pension Benefit Guaranty Corporation referred to and defined in ERISA and any successor entity performing
similar functions. 
 “pdf” means Portable Document Format or any other electronic format for the transmission of images.

  
 21 

 “Performance Guaranty” means any guaranty issued in connection with any
Non-Recourse Debt or International Debt that (a) if secured, is secured only by assets of, or Equity Interests in, a Non-Recourse Subsidiary or an International Subsidiary, and (b) guarantees to the provider of such Non-Recourse Debt or
International Debt or any other Person the (i) performance of the improvement, installation, design, engineering, construction, acquisition, development, completion, maintenance or operation of, or otherwise affects any such act in respect of,
all or any portion of the project that is financed by such Non-Recourse Debt or International Debt, (ii) completion of the minimum agreed equity contributions to the relevant Non-Recourse Subsidiary or International Subsidiary, or
(iii) performance by a Non-Recourse Subsidiary or an International Subsidiary of obligations to Persons other than the provider of such Non-Recourse Debt or International Debt. 

“Permitted Liens” means: 

(a) any Lien existing on any property at the time of the acquisition thereof and not created in contemplation of such acquisition by WPZ or
any of its Subsidiaries, whether or not assumed by WPZ or any of its Subsidiaries; 
 (b) any Lien existing on any property of a Subsidiary
of WPZ at the time it becomes a Subsidiary of WPZ and not created in contemplation thereof and any Lien existing on any property of any Person at the time such Person is merged or liquidated into or consolidated with WPZ (whether or not WPZ is the
surviving Person) or any of its Subsidiaries and not created in contemplation thereof; 
 (c) purchase money and analogous Liens incurred in
connection with the acquisition, development, construction, improvement, repair or replacement of property (including such Liens securing Indebtedness incurred within 12 months of the date on which such property was acquired, developed, constructed,
improved, repaired or replaced); provided that all such Liens attach only to the property acquired, developed, constructed, improved, repaired or replaced and the principal amount of the Indebtedness secured by such Lien shall not exceed the
gross cost of the property; 
 (d) [reserved]; 

(e) Liens on accounts receivable and related asset proceeds thereof arising in connection with a receivables financing and any Lien held by
the purchaser of receivables derived from property or assets sold by WPZ or any of its Subsidiaries and securing such receivables resulting from the exercise of any rights arising out of defaults on such receivables; 

(f) leases constituting Liens now or hereafter existing and any renewals or extensions thereof; 

(g) any Lien securing industrial development, pollution control or similar revenue bonds; 

(h) Liens existing on the Closing Date; 

(i) Liens in favor of a Borrower or any of its Subsidiaries; 

  
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 (j) Liens securing Indebtedness incurred to refund, extend, refinance or otherwise replace
Indebtedness (“Refinanced Indebtedness”) secured by a Lien permitted to be incurred under this Agreement; provided, that (i) the principal amount of such Refinanced Indebtedness does not exceed the principal amount of
Indebtedness refinanced (plus the amount of penalties, premiums, fees, accrued interest and reasonable expenses and other obligations incurred therewith) at the time of such refunding, extension, refinancing or replacement and (ii) the Liens
securing the Refinancing Indebtedness are limited to either (A) substantially the same collateral that secured, at the time of such refunding, extension, refinancing or replacement, the Indebtedness so refunded, extended, refinanced or replaced
or (B) other collateral of reasonably equivalent value of the collateral described in clause (A) above; 
 (k) Liens on and
pledges of the Equity Interests of any joint venture owned by WPZ or any of its Subsidiaries to the extent securing Indebtedness of such joint venture that is non-recourse to WPZ or any of its Subsidiaries; 

(1) any Lien created or assumed by WPZ or any of its Subsidiaries on oil, gas, coal or other mineral or timber property, owned or leased by
WPZ or any of its Subsidiaries in the ordinary course of the business; 
 (m) Liens on the products and proceeds (including insurance,
condemnation and eminent domain proceeds) of and accessions to, and contract or other rights (including rights under insurance policies and product warranties) derivative of or relating to, property permitted to be subject to Liens but subject to
the same restrictions and limitations set forth in this Agreement as to Liens on such property (including the requirement that such Liens on products, proceeds, accessions and rights secure only obligations that such property is permitted to
secure); 
 (n) any Liens securing Indebtedness neither assumed nor guaranteed by WPZ or a Subsidiary of WPZ nor on which it customarily
pays interest, existing upon real estate or rights in or relating to real estate (including rights-of-way and easements) acquired by WPZ or such Subsidiary, which Liens do not materially impair the use of such property for the purposes for which it
is held by WPZ or such Subsidiary; 
 (o) any Lien existing or hereafter created on any office equipment, data processing equipment
(including computer and computer peripheral equipment) or transportation equipment (including motor vehicles, aircraft and marine vessels); 

(p) undetermined Liens incidental to construction or maintenance; 

(q) any Lien created by WPZ or a Subsidiary of WPZ on any contract (or any rights thereunder or proceeds therefrom) providing for advances by
WPZ or such Subsidiary to finance gas exploration and development or to finance acquisition or construction of gathering systems, which Lien is created to secure Indebtedness incurred to finance such advance; 

(r) any Liens on cash, short term investments and letters of credit securing obligations of WPZ or any of its Subsidiaries under currency
hedges and interest rate hedges; 
 (s) Liens granted pursuant to any Loan Document, including in connection with any Cash
Collateralization; 

  
 23 

 (t) Liens for Taxes, customs duties or other governmental charges or assessments that are not at
the time determined (or, if determined, are not at the time delinquent), or that are delinquent but the validity of which is being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with GAAP, if
required by such principles, have been provided on the books of the relevant entity; 
 (u) Liens pursuant to master netting agreements and
other agreements entered into in the ordinary course of business in connection with hedging obligations, so long as such Liens encumber only amounts owed under the hedges covered by such agreements; 

(v) Liens on cash deposits in the nature of a right of setoff, banker’s lien, counterclaim or netting of cash amounts owed arising in the
ordinary course of business on deposit accounts; 
 (w) Liens securing Non-Recourse Debt of a Non-Recourse Subsidiary on the assets (and the
income and proceeds therefrom) of such Non-Recourse Subsidiary that are not owned by WPZ or any of its Subsidiaries on the Closing Date and that are acquired, developed, operated and/or constructed with the proceeds of (i) such Non-Recourse
Debt or investments in such Non-Recourse Subsidiary or (ii) Non-Recourse Debt or investments referred to in clause (i) refinanced in whole or in part by such Non-Recourse Debt; 

(x) Liens securing Non-Recourse Debt of a Non-Recourse Subsidiary on the Equity Interests and assets (and the income and proceeds therefrom)
of such Non-Recourse Subsidiary that are owned by WPZ or any of its Subsidiaries on the Closing Date (“Existing Assets”) and that are developed, operated and/or constructed with the proceeds of (i) such Non-Recourse Debt or
investments in such Non-Recourse Subsidiary or (ii) Non-Recourse Debt or investments referred to in clause (i) refinanced in whole or in part by such Non-Recourse Debt, provided that the aggregate fair market value (determined as of
the Closing Date) of Existing Assets on which Liens may be granted pursuant to this clause (x) shall not exceed $250,000,000; 
 (y)
Liens securing International Debt so long as such Liens do not encumber any assets of the Borrower or any of its Subsidiaries (other than the Equity Interests of the International Subsidiary that is the borrower of such International Debt); 

(z) Liens on deposits or other security given to secure bids, tenders, trade contracts, leases, government contracts, or to secure or in lieu
of surety and appeal bonds, performance and return of money bonds, in each case to secure obligations arising in the ordinary course of business of the Borrower and its Subsidiaries; 

(aa) Liens on deposits or other security given to secure public or statutory obligations and deposits as security for the payment of Taxes,
other governmental assessments or other similar governmental charges, in each case to secure obligations of a Borrower or any of its Subsidiaries arising in the ordinary course of business; and 

(bb) Liens arising under Oil and Gas Agreements to secure compliance with such agreements; provided that any such Lien referred to in
this clause are for claims which are not delinquent or which are being contested in good faith by appropriate action and for which adequate reserves have been maintained in accordance with GAAP, and provided further that any

  
 24 

 
such Lien referred to in this clause does not materially impair the use of the property covered by such Lien for the purposes for which such property is held by any Borrower or any Subsidiary or
materially impair the value of such property subject thereto, and provided further that such Liens are limited to property, including all relevant Oil and Gas Properties, that are the subject of the relevant Oil and Gas Agreement. 

Each of the foregoing paragraphs (a) through (bb) shall also be deemed to permit (i) appropriate Uniform Commercial Code and other
similar filings to perfect the Liens permitted by such paragraph and (ii) Liens on the products and proceeds (including insurance, condemnation and eminent domain proceeds) of and accessions to, and contract or other rights (including rights
under insurance policies and product warranties) derivative of or relating to, the property permitted to be encumbered under such paragraph, but subject to the same restrictions and limitations herein set forth as to Liens on such property
(including the requirement that such Liens on products, proceeds, accessions and rights secure only the specified obligations, and in the amount, that such property is permitted to secure). 

“Person” means any natural person, corporation, limited liability company, trust, joint venture, association, company,
partnership, Governmental Authority or other entity. 
 “Plan” means any employee pension benefit plan (other than a
Multiemployer Plan) as defined in Section 3(2) of ERISA currently maintained by, or in the event such plan has terminated, to which contributions have been made or an obligation to make such contributions has accrued during any of the five plan
years preceding the date of the termination of such plan by, any applicable Borrower or any ERISA Affiliate of such Borrower subject to the provisions of Title IV of ERISA or Section 412 of the Code or Section 302 of ERISA, and in
respect of which WPZ or any ERISA Affiliate is (or, if such plan were terminated, would under Section 4069 of ERISA be deemed to be) an “employer” as defined in Section 3(5) of ERISA. 

“Pre-Merger WPZ” means the Person known as Williams Partners L.P., a Delaware limited partnership prior to giving effect to
the ACMP Merger. 
 “Prime Rate” means the rate of interest per annum publicly announced from time to time by Citibank,
N.A. as its prime rate in effect at its principal office in New York, New York. Each change in the Prime Rate shall be effective from and including the date such change is publicly announced as being effective. 

“Pro Rata Share” means, as to any Revolving Lender, its Commitment divided by the aggregate Commitments of all Revolving
Lenders. 
 “Rating Agency” means each of Moody’s and S&P. 

“Recipient” means (a) the Administrative Agent, (b) any Lender, (c) any Issuing Bank and (d) the Swing
Line Lender as applicable. 
 “Register” has the meaning set forth in Section 9.05(c). 

  
 25 

 “Related Parties” means, with respect to any specified Person, such
Person’s Affiliates and the respective directors, officers, members, partners, employees, agents and advisors of such Person and such Person’s Affiliates. 

“Replacement Lender” has the meaning set forth in Section 2.04(b). 

“Required Lenders” means, at any time, Revolving Lenders having Credit Exposures and unused Commitments representing more
than 50% of the sum of the total Credit Exposures and unused Commitments at such time, as such definition may be modified from time to time in accordance with Section 9.03 hereof. 

“Responsible Officer” means (a) with respect to WPZ, the president, chief executive officer, chief financial officer,
the general counsel, any vice president, the secretary, any assistant secretary, the treasurer, any assistant treasurer, or the controller of the General Partner or any other officer designated as a “Responsible Officer” by the board of
directors of the General Partner and (b) with respect to any other Person, the president, chief executive officer, chief financial officer, the general counsel, any vice president, the secretary, any assistant secretary, the treasurer, any
assistant treasurer, or the controller of such Person or any other officer designated as a “Responsible Officer” by the board of directors (or equivalent governing body) of such Person. 

“Restricted Payment” means, with respect to any Person, any dividend or other distribution (whether in cash, securities or
other property) with respect to any class of Equity Interests of such Person, or any payment (whether in cash, securities or other property), including any sinking fund or similar deposit, on account of the purchase, redemption, retirement,
acquisition, cancellation or termination of any Equity Interests of such Person or any option, warrant or other right to acquire any Equity Interests of such Person; provided that (a) dividends, distributions or payments of common Equity
Interests of such Person, (b) any Equity Interest split, Equity Interest reverse split or similar transactions and (c) the Borrower’s open market repurchase of any of its Equity Interests and acquisitions by officers, directors and
employees of the Borrower of Equity Interests in the Borrower through cashless exercise of options, warrants or other rights to acquire Equity Interests in the Borrower issued pursuant to an employment, equity award, equity option or equity
appreciation agreement or plans entered into by the Borrower in the ordinary course of business, in each case shall be deemed not to be “Restricted Payments”. 

“Revolving Lenders” means the Persons listed on Schedule 2.01 and any other Person that shall have become a party
hereto pursuant to an Assignment and Acceptance or pursuant to Section 2.01(c) other than any such Person that ceases to be a party hereto pursuant to an Assignment and Acceptance. 

“S&P” means Standard & Poor’s Financial Services LLC, a subsidiary of The McGraw-Hill Companies, Inc. and
any successor thereto. 
 “Sale and Leaseback Transaction” of any Person means any arrangement entered into by such Person
or any Subsidiary of such Person, directly or indirectly, whereby such Person or any Subsidiary of such Person shall sell or transfer any property, whether now owned or hereafter 

  
 26 

 
acquired to any other Person (a “Transferee”), and whereby such first Person or any Subsidiary of such first Person shall then or thereafter rent or lease as lessee such property
or any part thereof or rent or lease as lessee from such Transferee or any other Person other property which such first Person or any Subsidiary of such first Person intends to use for substantially the same purpose or purposes as the property sold
or transferred. 
 “Senior Notes” means senior notes issued by WPZ or its predecessors constituting Material Indebtedness.

 “Solvent” and “Solvency” means, with respect to any Person on a particular date, that on such date
(a) the fair value of the property of such Person is greater than the total amount of liabilities, including contingent liabilities, of such Person, (b) the present fair salable value of the assets of such Person is not less than the
amount that will be required to pay the probable liability of such Person on its debts as they become absolute and matured, (c) such Person does not intend to, and does not believe that it will, incur debts or liabilities beyond such
Person’s ability to pay such debts and liabilities as they mature and (d) such Person is not engaged in business or a transaction, and is not about to engage in business or a transaction, for which such Person’s property would
constitute an unreasonably small capital. The amount of contingent liabilities at any time shall be computed as the amount that, in the light of all the facts and circumstances existing at such time, represents the amount that can reasonably be
expected to become an actual or matured liability. 
 “Specified Acquisition” means (i) the ACMP Merger and
(ii) one or more acquisitions of assets, Equity Interests, entities, operating lines or divisions in any fiscal quarter for an aggregate purchase price of not less than $25,000,000, whether effectuated in one or a series of related
transactions. 
 “Subsidiary” means, with respect to any specified Person: 

(a) any corporation, association or other business entity (other than a partnership or limited liability company) of which more than 50% of
the total voting power of Voting Stock is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and 

(b) any partnership (whether general or limited) or limited liability company (i) the sole general partner or member of which is such
Person or a Subsidiary of such Person, or (ii) if there is more than a single general partner or member, either (A) the only managing general partners or managing members of which are such Person or one or more Subsidiaries of such Person
(or any combination thereof) or (B) such Person owns or controls, directly or indirectly, a majority of the outstanding general partner interests, member interests or other Voting Stock of such partnership or limited liability company,
respectively; provided, however that “Subsidiary” with respect to the Borrower does not include (1) any Non-Recourse Subsidiary and (2) any International Subsidiary. 

“Swing Line Borrowing Notice” has the meaning set forth in Section 2.05(b). 

“Swing Line Lender” means Citibank, N.A. 

  
 27 

 “Swing Line Limit” means a maximum principal amount of the lesser of
(a) $150,000,000 and (b) the Aggregate Commitments at any one time outstanding. 
 “Swing Line Loan” means a Loan
made available to a Borrower by the Swing Line Lender pursuant to Section 2.05. 
 “Swing Line Loan Exposure”
means, as to any Revolving Lender at any time, an amount equal to its Pro Rata Share of the aggregate principal amount of outstanding Swing Line Loans at such time. 

“Swing Line Rate” means, for any day, the sum of (a) the Alternate Base Rate plus (b) the Applicable Rate with
respect to ABR Borrowings. 
 “Taxes” means all present or future taxes, levies, imposts, duties, deductions, withholdings,
assessments, fees or other charges imposed by any Governmental Authority, including any interest, additions to tax or penalties applicable thereto. 

“Transactions” means the signature and delivery by the Borrowers of this Agreement, the borrowing of Loans and the issuance
of Letters of Credit hereunder. 
 “Type”, when used in reference to any Loan or Borrowing, refers to whether the rate of
interest on such Loan, or on the Loans comprising such Borrowing, is determined by reference to the LIBO Rate or the Alternate Base Rate. 

“U.S. Person” means any Person that is a “United States person” as defined in Section 7701(a)(30) of the Code.

 “U.S. Tax Compliance Certificate” has the meaning assigned to such term in Section 2.17(f). 

“Voting Stock” of any Person as of any date means the Capital Stock of such Person that is at the time entitled (without
regard to the occurrence of any contingency) to vote in the election of the Board of Directors (or similar governing body) of such Person. 

“Williams” means The Williams Companies, Inc., a Delaware corporation. 

“Withdrawal Liability” means liability to a Multiemployer Plan as a result of a complete or partial withdrawal from such
Multiemployer Plan, as such terms are defined in Part I of Subtitle E of Title IV of ERISA. 
 Section 1.02
Classification of Loans and Borrowings. For purposes of this Agreement, Loans may be classified and referred to by Type (e.g., a “Eurodollar Loan”). Borrowings also may be classified and referred to by Type (e.g., a
“Eurodollar Borrowing”). 
 Section 1.03 Terms Generally. The definitions of terms herein shall apply equally to the
singular and plural forms of the terms defined. Whenever the context may require, any pronoun shall include the corresponding masculine, feminine and neuter forms. The words “include,” “includes” and “including” shall
be deemed to be followed by the phrase “without 

  
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limitation.” The word “will” shall be construed to have the same meaning and effect as the word “shall.” Unless the context requires otherwise (a) any definition of
or reference to any agreement, instrument or other document herein shall be construed as referring to such agreement, instrument or other document as from time to time amended, supplemented or otherwise modified (subject to any restrictions on such
amendments, supplements or modifications set forth herein), (b) any reference herein to any Person shall be construed to include such Person’s successors and assigns, (c) the words “herein,” “hereof” and
“hereunder,” and words of similar import, shall be construed to refer to this Agreement in its entirety and not to any particular provision hereof, (d) all references herein to Articles, Sections, Exhibits and Schedules shall be
construed to refer to Articles and Sections of, and Exhibits and Schedules to, this Agreement, (e) any reference to any law or regulation herein shall, unless otherwise specified, refer to such law or regulation as amended, modified or
supplemented from time to time and (f) the words “asset” and “property” shall be construed to have the same meaning and effect and to refer to any and all tangible and intangible assets and properties, including cash,
securities, accounts and contract rights. 
 Section 1.04 Accounting Terms; GAAP. All accounting terms not specifically defined
shall be construed in accordance with GAAP. To the extent there are any changes in accounting standards from December 31, 2014, the financial condition covenants set forth herein will continue to be determined in accordance with accounting
standards in effect on December 31, 2014, as applicable, until such time, if any, as such financial covenants are adjusted or reset to reflect such changes in accounting standards and such adjustments or resets are agreed to in writing by the
Borrowers and the Administrative Agent (after consultation with the Required Lenders). 
 ARTICLE II 

THE CREDITS 

Section 2.01 Commitments. 

(a) Loans. Subject to the terms and conditions set forth herein, each Revolving Lender agrees to make Loans in Dollars to each Borrower
from time to time during the Availability Period in an aggregate principal amount that will not result in (i) such Lender’s Credit Exposure exceeding such Lender’s Commitment or (ii) the sum of the total Credit Exposures
exceeding the Aggregate Commitments; provided, however, that in no event shall the sum of the total Credit Exposures with respect to each of NWP and TGPL, individually, exceed $500,000,000 (the “Borrower Sublimit”), it being
understood that the termination of a Borrower Sublimit for either NWP or TGPL shall not result in a reduction of the Aggregate Commitments. Within the foregoing limits and subject to the terms and conditions set forth herein, each Borrower may
borrow, prepay and reborrow Loans. 
 (b) [Reserved]. 

(c) Increase in Commitments. 

(i) WPZ shall have the option, without the consent of the Lenders, from time to time to cause one or more increases in the
Aggregate Commitments by adding, subject to the prior approval of the Administrative Agent and the Issuing Banks (such approval not to be unreasonably withheld), to this Agreement one or more financial institutions as Revolving Lenders
(collectively, the “New Lenders”) or by allowing one or more 

  
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Revolving Lenders to increase their respective Commitments; provided however that: (A) prior to and after giving effect to the increase, no Default or Event of Default shall have
occurred hereunder and be continuing, (B) no such increase shall cause the Aggregate Commitments to exceed $4,000,000,000, (C) no Lender’s Commitment shall be increased without such Lender’s consent, (D) such increase shall
not result in the increase of any Borrower Sublimit and (E) such increase shall be evidenced by a commitment increase agreement in form and substance reasonably acceptable to the Administrative Agent and executed by WPZ, the Administrative
Agent, the New Lenders, if any, and Lenders increasing their Commitments, if any, and which shall indicate the amount and allocation of such increase in the Aggregate Commitments and the effective date of such increase (the “Increase
Effective Date”). Each financial institution that becomes a New Lender pursuant to this Section by the execution and delivery to the Administrative Agent of the applicable commitment increase agreement shall be a “Revolving
Lender” and a “Lender” for all purposes under this Agreement on the applicable Increase Effective Date. The Borrowers shall borrow and prepay Loans on each Increase Effective Date (and pay any additional amounts required pursuant to
Section 2.16) to the extent necessary to keep the outstanding Loans of each Revolving Lender ratable with such Lender’s revised Applicable Percentage after giving effect to any nonratable increase in the Aggregate Commitments under
this Section. 
 (ii) As a condition precedent to each increase pursuant to Section 2.01(c)(i) above, WPZ shall
deliver to the Administrative Agent, to the extent requested by the Administrative Agent, the following in form and substance reasonably satisfactory to the Administrative Agent: 

(A) a certificate dated as of the Increase Effective Date, signed by a Responsible Officer of the General Partner certifying
that each of the conditions to such increase set forth in this Section 2.01(c) shall have occurred and been complied with and that, before and after giving effect to such increase, (1) the representations and warranties (other than
Added L/C Representations) contained in this Agreement and the other Loan Documents are true and correct in all material respects on and as of the Increase Effective Date after giving effect to such increase, except to the extent that such
representations and warranties specifically refer to an earlier date, in which case they were true and correct in all material respects as of such earlier date, and (2) no Default or Event of Default exists and is continuing; 

(B) such certificates of resolutions or other action, incumbency certificates and/or other certificates of a Responsible
Officer of the General Partner as the Administrative Agent may reasonably require evidencing the identity, authority and capacity of such Responsible Officer thereof authorized to act as a Responsible Officer in connection with such increase
agreement, and such documents and certifications as the Administrative Agent may reasonably require to evidence that WPZ is validly existing and in good standing in its jurisdiction of organization; and 

(C) a favorable customary opinion of counsel to WPZ, relating to such increase agreement, addressed to the Administrative Agent
and each Lender if requested by the Administrative Agent or such Lenders. 
 (iii) Any Borrower shall have the option, by
agreement with any Lender to (A) after consultation with the Administrative Agent, cause such Lender to become or cease to be an Issuing Bank under this Agreement and (B) increase or decrease the Letter of Credit Commitment of any Lender
as an Issuing Bank. 

  
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 Section 2.02 Loans and Borrowings. 

(a) Each Loan (other than the Swing Line Loans) shall be made as part of a Borrowing consisting of Loans made by the Revolving Lenders ratably
in accordance with their respective Commitments. The failure of any Lender to make any Loan required to be made by it shall not relieve any other Lender of its obligations hereunder; provided that the Commitments of the Lenders are several
and no Lender shall be responsible for any other Lender’s failure to make Loans as required. 
 (b) Subject to
Section 2.14, each Borrowing (other than Borrowings of Swing Line Loans) shall be comprised entirely of ABR Loans or Eurodollar Loans as a Borrower may request in accordance herewith. Each Lender at its option may make any Eurodollar
Loan by causing any domestic or foreign branch or Affiliate of such Lender to make such Loan; provided that any exercise of such option shall not affect the obligation of the applicable Borrower to repay such Loan in accordance with the terms
of this Agreement. 
 (c) At the commencement of each Interest Period for any Eurodollar Borrowing, such Borrowing shall be in an aggregate
amount that is an integral multiple of $1,000,000 and not less than $5,000,000. At the time that each ABR Borrowing is made, such Borrowing shall be in an aggregate amount that is an integral multiple of $1,000,000 and not less than $5,000,000;
provided that an ABR Borrowing may be in an aggregate amount that is equal to the entire unused balance of the Aggregate Commitments or, in the case of NWP or TGPL, the entire unused balance of the Borrower Sublimit applicable to it, or that
is required to finance the reimbursement of an LC Disbursement as contemplated by Section 2.06(e) or the repayment of a Swing Line Loan as contemplated by Section 2.05(d). Borrowings of more than one Type may be outstanding
at the same time; provided that there shall not at any time be more than a total of 24 Eurodollar Borrowings outstanding. 
 (d)
Notwithstanding any other provision of this Agreement, no Borrower shall be entitled to request, or to elect to convert or continue, any Borrowing if the Interest Period requested with respect thereto would end after the Maturity Date. 

Section 2.03 Requests for Borrowings. To request a Borrowing (other than a Borrowing of a Swing Line Loan), a Borrower shall
notify the Administrative Agent of such request by telephone (a) in the case of a Eurodollar Borrowing, not later than 12:00 noon, New York City time, three Business Days before the date of the proposed Borrowing or (b) in the case of
an ABR Borrowing, not later than 11:00 a.m., New York City time, on the date of the proposed Borrowing. Each such telephonic Borrowing Request shall be irrevocable and shall be confirmed promptly by hand delivery, fax or emailed pdf to the
Administrative Agent of a written Borrowing Request signed by such Borrower. Each such telephonic and written Borrowing Request shall specify the following information in compliance with Section 2.02: 

(i) the aggregate amount of the requested Borrowing; 

  
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 (ii) the date of such Borrowing, which shall be a Business Day; 

(iii) whether such Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing; 

(iv) in the case of a Eurodollar Borrowing, the initial Interest Period to be applicable thereto, which shall be a period
contemplated by the definition of the term “Interest Period”; and 
 (v) the location and number of such
Borrower’s account to which funds are to be disbursed, which shall comply with the requirements of Section 2.07. 
 If no election as to
the Type of Borrowing is specified in a Borrowing Request delivered pursuant to Section 2.03, then the requested Borrowing shall be an ABR Borrowing. If no Interest Period is specified with respect to any requested Eurodollar Borrowing,
then such Borrower shall be deemed to have selected an Interest Period of one month’s duration. Promptly following receipt of a Borrowing Request in accordance with this Section, the Administrative Agent shall advise each Revolving Lender of
the details thereof and of the amount of such Lender’s Loan to be made as part of the requested Borrowing. 
 Section 2.04
Extension of Maturity Date. 
 (a) No earlier than 90 days prior and no later than 30 days prior to each anniversary of the Closing
Date, upon notice to the Administrative Agent (which shall promptly, but in any event within three (3) Business Days after receipt of such notice, notify the Lenders and the Issuing Banks of such notice), the Borrowers may request an extension
of the Maturity Date then in effect (an “Extension Request”) for an additional one-year period; provided that no more than two of such one-year extensions shall be permitted hereunder. Within 20 days of delivery of such
Extension Request, each Lender and each Issuing Bank shall notify the Administrative Agent and the Borrowers whether or not it consents to such Extension Request (which consent may be given or withheld in such Lender’s or such Issuing
Bank’s, as applicable, sole and absolute discretion). Any Non-Defaulting Lender with a then effective Commitment may consent to an Extension Request irrespective of whether such Lender previously had been a Declining Lender with respect to a
previous Extension Request. The Administrative Agent shall promptly notify the Borrowers, the Lenders and the Issuing Banks of the Lenders’ and the Issuing Banks’ responses. 

(b) Each Lender and each Issuing Bank that agrees in its sole discretion to extend its Commitment (each, an “Extending
Lender”) shall notify the Administrative Agent within such time period of its agreement to extend its Commitment. The Commitment of any Lender and the Letter of Credit Commitment of any Issuing Bank that declines or fails to respond to such
Borrower’s request for an extension of the Maturity Date within such time period (a “Declining Lender”) shall be terminated on the Maturity Date then in effect for such Lender or Issuing Bank, as applicable (without regard to
any extension by other Lenders or Issuing Banks) and on such date the aggregate Commitments of all Lenders shall be reduced by the total Commitments of all Declining Lenders expiring on the Maturity Date (without giving effect to the Extension

  
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Request) except to the extent one or more Eligible Assignees shall have agreed to assume such Commitments hereunder in accordance with Section 2.19(b) (each, a “Replacement
Lender”). The Administrative Agent shall notify such Borrower, each Lender and each Issuing Bank of the Lenders’ and Issuing Banks’ responses to each request made hereunder. Such Borrower shall pay in full the unpaid principal
amount of all Loans owing to each Declining Lender, together with all accrued and unpaid interest thereon and all fees accrued and unpaid under this Agreement and all other amounts due to such Declining Lender under this Agreement, including any
breakage fees or costs that are payable pursuant to Section 2.16, on the Maturity Date (without giving effect to the Extension Request) or the earlier replacement of such Declining Lender pursuant to Section 2.19(b). 

(c) The Maturity Date shall be extended as to Extending Lenders only if (x) Required Lenders (calculated after giving effect to any
replacements of Lenders permitted herein) have consented to the Extension Request; provided that the Commitment or Letter of Credit Commitment, as applicable, of each Extending Lender shall be on the same terms and conditions as the
Commitment of each other Extending Lender and (y) on the Extension Effective Date (as defined herein), (i) the LC Exposure in respect of all Letters of Credit issued by the Issuing Banks does not exceed the aggregate of all Letter of
Credit Commitments (other than Letter of Credit Commitments of Declining Lenders) at such time and (ii) the Aggregate Outstanding Credit Exposure does not exceed the Aggregate Commitments (calculated excluding Commitments of Declining Lenders).
For each such Extension Request, if so approved, the Maturity Date (such existing Maturity Date being the “Extension Effective Date”), as to Extending Lenders (irrespective of whether such Lender previously had been a Declining
Lender), shall be extended by one year. With respect to any previously Declining Lender who is a Extending Lender with respect to a current Extension Request, by giving its consent, such Extending Lender shall be approving each requested extension
of the Maturity Date as to which it was a Declining Lender. Declining Lenders shall remain Lenders or Issuing Banks, as applicable, until the Maturity Date applicable to such Lender or Issuing Bank. Upon satisfaction of the conditions precedent
provided in the next sentence, the Administrative Agent and such Borrower shall promptly confirm to the Lenders and the Issuing Banks any extension of the Maturity Date pursuant to this Section 2.04, specifying the date of such
confirmation (the “Extension Confirmation Date”), the Extension Effective Date, and the extended Maturity Date with respect to the Extending Lenders. As a condition precedent to such extension, such Borrower shall deliver to the
Administrative Agent a certificate of such Borrower dated as of the Extension Confirmation Date signed by a Responsible Officer of such Borrower certifying that, as of the Extension Confirmation Date, (i) before and after giving effect to such
extension, the representations and warranties set forth in this Agreement are true and correct in all material respects (other than those representations and warranties that are subject to a materiality qualifier, in which case such representations
and warranties are true and correct in all respects as written, including the materiality qualifier) on and as of such date (other than those representations and warranties that expressly relate to a specific earlier date, which are true and correct
in all material respects as of such earlier date (other than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties are true and correct in all respects as of such earlier
date as written, including the materiality qualifier)) and (ii) before and after giving effect to such extension, no Default or Event of Default has occurred and is continuing. 

  
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 (d) If the Maturity Date is extended in accordance with this Section, (i) the Administrative
Agent shall record in the Register any Replacement Lender’s information as provided pursuant to an Administrative Questionnaire that shall be executed and delivered by such Replacement Lender to the Administrative Agent on or before such
Extension Effective Date, (ii) Schedule 2.01 hereof shall be amended and restated to set forth all Revolving Lenders (including any Replacement Lenders) and Issuing Banks that will be Revolving Lenders and Issuing Banks hereunder (and
their respective Commitments and Letter of Credit Commitments) after giving effect to such extension and the Administrative Agent shall distribute to each Lender (including each Replacement Lender) and each Issuing Bank a copy of such amended and
restated Schedule 2.01, (iii) each Replacement Lender that complies with the provisions of this Section 2.04 shall be a “Lender” for all purposes under this Agreement, (iv) all calculations and payments of
interest on the Loans shall take into account the actual Commitments of each Lender and the principal amount outstanding of each Loan made by such Lender during the relevant period of time, and (v) each Lender’s share of the LC Exposure
and obligation to participate in Swing Line Loans on such date shall automatically be deemed to equal such Lender’s Applicable Percentage of the LC Exposure (such Applicable Percentage for such Lender to be determined as of such Extension
Effective Date in accordance with its Commitment on such date as a percentage of the Commitments on such date) or the Swing Line Lenders, as applicable, without further action by any party. 

(e) If as a result of any extension of the Maturity Date in accordance with this Section 2.04 there is more than one Maturity Date
in effect at any time, the Borrower and the Administrative Agent may make such amendments to this Agreement as may be necessary to ensure the pro rata treatment in accordance with Section 2.18(c) in respect of all Borrowings and Loans
hereunder. 
 Section 2.05 Swing Line Loan. 

(a) Amount of Swing Line Loans. Upon (a) the satisfaction of the conditions precedent set forth in Section 4.02 and
(b) if such Swing Line Loan is to be made on the date of the initial advance hereunder, the satisfaction of the conditions precedent set forth in Section 4.01, from and including the Closing Date and before the Maturity Date as to
the Swing Line Lender, any Borrower may request and the Swing Line Lender shall, on the terms and conditions set forth in this Agreement, make Swing Line Loans to the Borrowers from time to time in an aggregate principal amount not to exceed the
Swing Line Limit; provided that at no time shall the Aggregate Outstanding Credit Exposure at any time exceed the Aggregate Commitment. Subject to the terms of this Agreement, the Borrowers may borrow, repay and re-borrow Swing Line Loans at
any time prior to the Maturity Date as to the Swing Line Lender. Subject to the terms and conditions of this Agreement (including the satisfaction of the applicable conditions precedent set forth in Article IV), a Borrower may request a Loan
(other than a Swing Line Loan) hereunder for the purpose of repaying any Swing Line Loan. 
 (b) Borrowing Notice. A Borrower may
request a Swing Line Loan by delivering to the Administrative Agent and the Swing Line Lender irrevocable notice in substantially the form attached hereto as Exhibit B-2 (a “Swing Line Borrowing Notice”) not later than 2:00 p.m. on
the requested borrowing date of such Swing Line Loan, specifying (i) the applicable borrowing date (which date shall be a Business Day), and (ii) the aggregate amount of the requested Swing Line Loan which shall be an amount not less than
$5,000,000 and in an integral multiple of $1,000,000 in excess thereof. The Swing Line Loans shall bear interest at the Swing Line Rate. 

  
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 (c) Making of Swing Line Loans. Promptly after receipt of a Swing Line Borrowing Notice,
the Administrative Agent shall notify each Lender of the requested Swing Line Loan. Not later than 4:00 p.m. on the applicable borrowing date, the Swing Line Lender shall make available the Swing Line Loan to the applicable Borrower on the borrowing
date to the account of the Administrative Agent most recently designated by it for such purpose by notice to the Lenders. 
 (d)
Repayment of Swing Line Loans. 
 (i) Each Swing Line Loan shall be paid in full by the applicable Borrower on or
before the earlier of (A) the seventh Business Day after the borrowing date for such Swing Line Loan and (B) the Maturity Date as to the Swing Line Lender; provided, that such payment shall not be made by application of the proceeds
of any other Swing Line Loans. 
 (ii) The Swing Line Lender may, by written notice given to the Administrative Agent not
later than 10:00 a.m. on any Business Day, require the Revolving Lenders to acquire participations on such Business Day in all or a portion of the Swing Line Loans outstanding. Such notice shall specify the aggregate amount of Swing Line Loans in
which Revolving Lenders will participate. Promptly upon receipt of such notice, the Administrative Agent will give notice thereof to each Revolving Lender, specifying in such notice such Lender’s share of such Swing Line Loan or Swing Line
Loans which share shall be equal to its Pro Rata Share thereof. Each Revolving Lender hereby absolutely and unconditionally agrees, upon receipt of notice as provided above, to pay to the Administrative Agent, for the account of the Swing Line
Lender, such Revolving Lender’s share of such Swing Line Loan or Swing Line Loans. Each Revolving Lender acknowledges and agrees that its obligation to acquire participations in Swing Line Loans pursuant to this paragraph is unconditional,
continuing, irrevocable and absolute and shall not be affected by any circumstances, including (A) any set-off, counterclaim, recoupment, defense or other right which such Lender may have against the Administrative Agent, the Swing Line Lender
or any other Person, (B) the occurrence or continuance of a Default or Event of Default, (C) any adverse change in the condition (financial or otherwise) of any Borrower, or (D) any other circumstances, happening or event whatsoever.
Each Revolving Lender shall comply with its obligation under this Section 2.05(d) by wire transfer of immediately available funds, in the same manner as provided in Section 2.07 with respect Loans made by such Revolving
Lender (and Section 2.07 shall apply, mutatis mutandis, to the payment obligations of the Revolving Lenders), and the Administrative Agent shall promptly pay to the Swing Line Lender the amounts so received from the Revolving
Lenders. In the event that any Revolving Lender fails to make payment to the Administrative Agent of any amount due under this Section 2.05(d), the Administrative Agent shall be entitled to receive, retain and apply against such
obligation the principal and interest otherwise payable to such Revolving Lender hereunder until the Administrative Agent receives such payment from such Revolving Lender or such obligation is otherwise fully satisfied. The Administrative

  
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Agent shall notify the applicable Borrower of any participations in any Swing Line Loan acquired pursuant to this paragraph, and thereafter payments in respect of such Swing Line Loan shall be
made to the Administrative Agent and not to the Swing Line Lender. Any amounts received by the Swing Line Lender from the applicable Borrower (or other party on behalf of such Borrower) in respect of a Swing Line Loan after receipt by the Swing Line
Lender of the proceeds of a sale of participations therein shall be promptly remitted to the Administrative Agent. All of such amounts received by the Administrative Agent in payment of Swing Line Loans shall be promptly remitted by the
Administrative Agent to the Revolving Lenders that shall have made their payments pursuant to this paragraph and to the Swing Line Lender, as their interests may appear; provided that any such payment so remitted shall be repaid to the Swing
Line Lender or to the Administrative Agent, as applicable, if and to the extent such payment is required to be refunded to a Borrower for any reason. The purchase of participations in a Swing Line Loan pursuant to this paragraph shall not relieve a
Borrower of any default in the payment thereof. 
 (iii) In addition, on the seventh Business Day after the borrowing date of
any Swing Line Loan, a Borrower shall be deemed to have automatically given notice to the Administrative Agent requesting that each Revolving Lender make a Loan in the amount of such Revolving Lender’s Pro Rata Share of such Swing Line Loan
(including any interest accrued and unpaid thereon), for the purpose of repaying such Swing Line Loan, in which case each Revolving Lender hereby absolutely and unconditionally agrees to fund to the Administrative Agent, for the account of the Swing
Line Lender, such Revolving Lender’s Loan deemed requested under this clause (iii) to the account of the Administrative Agent most recently designated by it for such purpose by notice to the Lenders, no later than 4:00 p.m. on the date
such notice is received by the Revolving Lender from the Administrative Agent if such notice is received at or before 2:00 p.m. (and otherwise before 11:00 a.m. on the next Business Day). Loans made pursuant to this Section 2.05(d)(iii)
shall initially be ABR Loans and thereafter may be continued as ABR Loans or converted into Eurodollar loans in the manner provided in Section 2.08 and subject to the other conditions and limitations set forth in this Article II.
Unless a Revolving Lender shall have notified the Swing Line Lender, prior to its making any Swing Line Loan, that any applicable condition precedent set forth in Section 4.01 or 4.02 had not then been satisfied, such Revolving
Lender’s obligation to make Loans pursuant to this Section 2.05(d)(iii) to repay Swing Line Loans shall be unconditional, continuing, irrevocable and absolute and shall not be affected by any circumstances, including (A) any
set-off, counterclaim, recoupment, defense or other right which such Lender may have against the Administrative Agent, the Swing Line Lender or any other Person, (B) the occurrence or continuance of a Default or Event of Default, (C) any
adverse change in the condition (financial or otherwise) of any Borrower, or (D) any other circumstances, happening or event whatsoever. 

Section 2.06 Letters of Credit. 

(a) General. Subject to the terms and conditions set forth herein, any Borrower may request the issuance of Letters of Credit under the
Commitments for its own account or for the account of any Subsidiary of it, in a form reasonably acceptable to the Administrative Agent and 

  
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the applicable Issuing Bank, at any time and from time to time during the Availability Period; provided that no Issuing Bank shall be required to issue, amend, renew or extend a Letter of
Credit after the Maturity Date with respect to that Issuing Bank. In the event of any inconsistency between the terms and conditions of this Agreement and the terms and conditions of any Letter of Credit Document, the terms and conditions of this
Agreement shall control. For the avoidance of doubt, any representations, warranties and events of default in any such letter of credit application or other agreement shall have no effect. Notwithstanding that a Letter of Credit issued or
outstanding hereunder is in support of any obligations of, or is for the account of, a Subsidiary of any Borrower, any Borrower requesting a Letter of Credit for a Subsidiary of it shall be obligated to reimburse the applicable Issuing Bank
hereunder for any and all drawings under such Letter of Credit, provided that, for the avoidance of doubt, WPZ shall not be obligated to reimburse any Issuing Bank for any drawing under a Letter of Credit requested by NWP or TGPL and issued
or outstanding in support of any obligations of, or for the account of NWP, TGPL or any Subsidiary of NWP or TGPL. Each Borrower hereby acknowledges that the issuance of Letters of Credit for the account of its Subsidiaries (other than, in the case
of WPZ, the issuance of Letters of Credit at the request of NWP or TGPL for the account of NWP, TGPL or any Subsidiary of NWP or TGPL) inures to the benefit of such Borrower, and that such Borrower’s business derives substantial benefits from
the businesses of its Subsidiaries. 
 (b) Notice of Issuance, Amendment, Renewal, Extension; Certain Conditions. To request the
issuance of a Letter of Credit (or the amendment, renewal (unless automatically renewed by its terms) or extension of an outstanding Letter of Credit), a Borrower shall hand deliver or fax (or transmit by electronic communication, if arrangements
for doing so have been approved by the applicable Issuing Bank) to the applicable Issuing Bank and the Administrative Agent three Business Days (or such shorter period as may be acceptable to such Issuing Bank) in advance of the requested date of
issuance, amendment, renewal (unless automatically renewed by its terms) or extension, a notice requesting the issuance of a Letter of Credit, or identifying the Letter of Credit to be amended, renewed or extended, and specifying the date of
issuance, amendment, renewal or extension (which shall be a Business Day), the date on which such Letter of Credit is to expire (which shall comply with paragraph (c) of this Section), the amount of such Letter of Credit, the name and address
of the beneficiary thereof and such other information as shall be necessary to prepare, amend, renew or extend such Letter of Credit. If requested by such Issuing Bank, such Borrower also shall submit a letter of credit application on such Issuing
Bank’s standard form in connection with any request for a Letter of Credit. A Letter of Credit shall be issued, amended, renewed or extended if and only if (and upon issuance, amendment, renewal or extension of each Letter of Credit such
Borrower shall be deemed to represent and warrant that), after giving effect to such issuance, amendment, renewal or extension (i) the LC Exposure in respect of all Letters of Credit issued by the Issuing Banks does not exceed the aggregate of
all Letter of Credit Commitments at such time, (ii) the LC Exposure in respect of all Letters of Credit issued by any Issuing Bank does not exceed the Letter of Credit Commitment of such Issuing Bank at such time, and (iii) the Aggregate
Outstanding Credit Exposure does not exceed the Aggregate Commitments. 
 (c) Expiration Date. Each Letter of Credit shall expire at
or prior to the close of business on the earlier of (i) the date one year after the date of the issuance of such Letter of Credit (or, in the case of any renewal or extension thereof, one year after such renewal or extension) and (ii) the
date that is seven Business Days prior to the Maturity Date with respect to 

  
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the Issuing Bank thereof; provided, if a Borrower so requests, an Issuing Bank may, in its sole and absolute discretion, agree to issue a Letter of Credit that has automatic renewal
provisions (each, an “Auto-Renewal Letter of Credit”); provided that any such Auto-Renewal Letter of Credit must permit such Issuing Bank to prevent any such renewal at least once in each twelve-month period (commencing with
the date of issuance of such Letter of Credit) by giving prior notice to the beneficiary thereof not later than (A) thirty (30) days before the end of such twelve-month period, or (B) such later date to be agreed upon at the time such
Letter of Credit is issued (the “Nonrenewal Notice Date”). Once an Auto-Renewal Letter of Credit has been issued, the Lenders shall be deemed to have authorized (but may not require) such Issuing Bank to permit the renewal of such
Letter of Credit at any time prior to the date set forth in clause (ii) of this Section 2.06(c); provided that the expiry date of such Letter of Credit shall be no later than the date set forth in clause (ii) of this
Section 2.06(c). 
 (d) Participations. By the issuance of a Letter of Credit (or an amendment to a Letter of Credit
increasing the amount thereof) and without any further action on the part of any Issuing Bank or the Lenders, each Issuing Bank hereby grants to each Revolving Lender, and each Revolving Lender hereby acquires from such Issuing Bank, a participation
in such Letter of Credit equal to such Lender’s Applicable Percentage of the aggregate amount available to be drawn under such Letter of Credit. In consideration and in furtherance of the foregoing, each Revolving Lender hereby absolutely and
unconditionally agrees to pay to the Administrative Agent, for the account of such Issuing Bank, such Lender’s Applicable Percentage of each LC Disbursement made by such Issuing Bank and not reimbursed by the applicable Borrower on the date due
as provided in paragraph (e) of this Section, or of any reimbursement payment required to be refunded to such Borrower for any reason. Each Revolving Lender acknowledges and agrees that its obligation to acquire participations pursuant to this
paragraph in respect of Letters of Credit is absolute and unconditional and shall not be affected by any circumstance whatsoever, including any amendment, renewal or extension of any Letter of Credit or the occurrence and continuance of a Default or
reduction or termination of the Aggregate Commitments, and that each such payment shall be made without any offset, abatement, withholding or reduction whatsoever. 

(e) Reimbursement. If an Issuing Bank shall make any LC Disbursement in respect of a Letter of Credit, the applicable Borrower shall
reimburse such LC Disbursement by paying to the Administrative Agent an amount equal to such LC Disbursement on the date that such LC Disbursement is made, if such Borrower shall have received notice of such LC Disbursement prior to 9:00 a.m., New
York City time, on such date, or, if such notice has not been received by such Borrower prior to such time on such date, then on the Business Day immediately following the day that such Borrower receives such notice; provided that such
Borrower may, subject to the conditions to borrowing set forth herein, request in accordance with Sections 2.03 that such payment be financed with an ABR Borrowing in an equivalent amount and, to the extent so financed, such
Borrower’s obligation to make such payment shall be discharged and replaced by the resulting ABR Borrowing. If such Borrower fails to make such payment when due, the Administrative Agent shall notify each Revolving Lender of the applicable LC
Disbursement, the payment then due from such Borrower in respect thereof and such Lender’s Applicable Percentage thereof. Promptly following receipt of such notice, each Revolving Lender shall pay to the Administrative Agent its Applicable
Percentage of the payment then due from such Borrower, in the same manner as provided in Section 2.07 with respect to Loans made by such 

  
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Lender (and Section 2.07 shall apply, mutatis mutandis, to the payment obligations of the Lenders), and the Administrative Agent shall promptly pay to the applicable
Issuing Bank the amounts so received by it from the Revolving Lenders. Promptly following receipt by the Administrative Agent of any payment from such Borrower pursuant to this paragraph, the Administrative Agent shall distribute such payment to the
applicable Issuing Bank or, to the extent that Revolving Lenders have made payments pursuant to this paragraph to reimburse such Issuing Bank, then to such Lenders and the applicable Issuing Bank as their interests may appear. Any payment made by a
Lender pursuant to this paragraph to reimburse an Issuing Bank for any LC Disbursement (other than the funding of ABR Loans as contemplated above) shall not constitute a Loan and shall not relieve a Borrower of its obligation to reimburse such LC
Disbursement. 
 (f) Obligations Absolute. Each Borrower’s obligation to reimburse LC Disbursements as provided in
paragraph (e) of this Section shall be absolute, unconditional and irrevocable, and shall be performed strictly in accordance with the terms of this Agreement under any and all circumstances whatsoever and irrespective of (i) any lack of
validity or enforceability of any Letter of Credit or this Agreement, or any term or provision therein, (ii) any draft or other document presented under a Letter of Credit proving to be forged, fraudulent or invalid in any respect or any
statement therein being untrue or inaccurate in any respect, (iii) payment by an Issuing Bank under a Letter of Credit against presentation of a draft or other document that does not comply with the terms of such Letter of Credit, or
(iv) any other event or circumstance whatsoever, whether or not similar to any of the foregoing, that might, but for the provisions of this Section, constitute a legal or equitable discharge of, or provide a right of setoff against, any
Borrower’s obligations hereunder. Neither the Administrative Agent, the Lenders nor the Issuing Banks, nor any of their Related Parties, shall have any liability or responsibility by reason of or in connection with the issuance or transfer of
any Letter of Credit or any payment or failure to make any payment thereunder (irrespective of any of the circumstances referred to in the preceding sentence), or any error, omission, interruption, loss or delay in transmission or delivery of any
draft, notice or other communication under or relating to any Letter of Credit (including any document required to make a drawing thereunder), any error in interpretation of technical terms or any consequence arising from causes beyond the control
of an Issuing Bank; provided that the foregoing shall not be construed to excuse any Issuing Bank from liability to any Borrower to the extent of any direct damages (as opposed to consequential damages, claims in respect of which are hereby
waived by each Borrower to the extent permitted by applicable law) suffered by any Borrower that are caused by such Issuing Bank’s failure to exercise care when determining whether drafts and other documents presented under a Letter of Credit
comply with the terms thereof. The parties hereto expressly agree that, in the absence of gross negligence or willful misconduct on the part of an Issuing Bank (as finally determined by a court of competent jurisdiction), such Issuing Bank shall be
deemed to have exercised care in each such determination. In furtherance of the foregoing and without limiting the generality thereof, the parties agree that, with respect to documents presented which appear on their face to be in substantial
compliance with the terms of a Letter of Credit, an Issuing Bank may, in its sole discretion, either accept and make payment upon such documents without responsibility for further investigation, regardless of any notice or information to the
contrary, or refuse to accept and make payment upon such documents if such documents are not in strict compliance with the terms of such Letter of Credit. 

  
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 (g) Disbursement Procedures. Each Issuing Bank shall, promptly following its receipt
thereof, examine all documents purporting to represent a demand for payment under a Letter of Credit. The applicable Issuing Bank shall promptly notify the Administrative Agent and the applicable Borrower by telephone (confirmed by fax or such
electronic communication that has been approved by the applicable Issuing Bank) of such demand for payment and whether such Issuing Bank has made or will make an LC Disbursement thereunder; provided that any failure to give or delay in giving
such notice shall not relieve such Borrower of its obligation to reimburse such Issuing Bank and the Lenders with respect to any such LC Disbursement. 

(h) Interim Interest. If an Issuing Bank shall make any LC Disbursement, then, unless the applicable Borrower shall reimburse such LC
Disbursement in full on the date such LC Disbursement is made, the unpaid amount thereof shall bear interest, for each day from and including the date such LC Disbursement is made to but excluding the date that such Borrower reimburses such LC
Disbursement, at the rate per annum then applicable to ABR Loans; provided that, if such Borrower fails to reimburse such LC Disbursement when due pursuant to paragraph (e) of this Section, then Section 2.13(e) shall apply.
Interest accrued pursuant to this paragraph shall be for the account of the applicable Issuing Bank, except that interest accrued on and after the date of payment by any Lender pursuant to paragraph (e) of this Section to reimburse such Issuing
Bank shall be for the account of such Lender to the extent of such payment. 
 (i) Replacement of an Issuing Bank. Any Issuing Bank
may be replaced at any time, after consultation with the Administrative Agent, by written agreement among the Borrowers, the replaced Issuing Bank and the successor Issuing Bank. The Administrative Agent shall notify the Lenders of any such
replacement of an Issuing Bank. At the time any such replacement shall become effective, the applicable Borrower shall pay all unpaid fees owed by it and accrued for the account of the replaced Issuing Bank pursuant to Section 2.12(b).
From and after the effective date of any such replacement, (i) the successor Issuing Bank shall have all the rights and obligations of an Issuing Bank under this Agreement with respect to Letters of Credit to be issued thereafter and
(ii) references herein to the term “Issuing Bank” shall be deemed to refer to such successor or to any previous Issuing Bank, or to such successor and all previous Issuing Banks, as the context shall require. After the replacement of
an Issuing Bank hereunder, the replaced Issuing Bank shall remain a party hereto and shall continue to have all the rights and obligations of an Issuing Bank under this Agreement with respect to Letters of Credit issued by it prior to such
replacement, but shall not be required to issue additional Letters of Credit. 
 (j) Cash Collateralization. 

(i) If any Event of Default shall occur and be continuing and if the maturity of the Loans has been accelerated with respect to
a Borrower pursuant to Article VII, on the Business Day that the Borrowers receive notice from the Administrative Agent upon written request of the Required Lenders demanding Cash Collateralization pursuant to this paragraph, each such
applicable Borrower shall Cash Collateralize an amount in cash equal to the LC Exposure for all outstanding Letters of Credit requested by it as of such date plus any accrued and unpaid interest thereon; provided that the obligation to Cash
Collateralize the LC Exposure shall become effective immediately, and such cash collateral shall become immediately due and payable, without demand or other notice of 

  
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any kind, upon the occurrence of any Event of Default with respect to such Borrower described in clause (g) or (h) of Article VII. Such deposit shall be held by the
Administrative Agent as collateral for the payment and performance of the obligations of the applicable Borrower under this Agreement. The Administrative Agent shall have exclusive dominion and control, including the exclusive right of withdrawal,
over such account. Other than any interest earned on the investment of such deposits, which investments shall be made at the option and sole discretion of the Administrative Agent and at each Borrower’s risk and expense, such deposits shall not
bear interest. Interest or profits, if any, on such investments shall accumulate in such account. Moneys in such account shall be applied by the Administrative Agent to reimburse the Issuing Banks for LC Disbursements for which they have not been
reimbursed by the applicable Borrower and, to the extent not so applied, shall be held for the satisfaction of the reimbursement obligations of the applicable Borrower for the LC Exposure at such time or, if the maturity of the Loans has been
accelerated (but subject to the consent of Lenders with LC Exposure representing greater than 51% of the total LC Exposure), be applied to satisfy other obligations of the applicable Borrower under this Agreement. To the extent not applied as
aforesaid, any cash collateral provided hereunder shall be returned in full to the applicable Borrower within three Business Days after all Events of Default have been cured or waived or, in full or in part, as necessary to cause the amount of such
cash collateral not to exceed the aggregate LC Exposure. 
 (ii) If any Lender becomes, and during the period it remains, a
Defaulting Lender, if any Letter of Credit or Swing Line Loan is at the time outstanding, any Issuing Bank (unless such Issuing Bank or the Swing Line Lender is a Defaulting Lender), except to the extent the Commitments have been reallocated
pursuant to Section 2.06(k), by notice to the applicable Borrower which requested or has requested the issuance of such Letters of Credit or Swing Line Loan through the Administrative Agent, may require such applicable Borrower to Cash
Collateralize within seven Business Days the obligations of such Borrower to the Issuing Banks in respect of such Letters of Credit, or the Swing Line Lender in respect of such Swing Line Loan, as the case may be, in an amount equal to the aggregate
amount of the unreallocated obligations (contingent or otherwise) of such Defaulting Lender in respect thereof, or to make other arrangements satisfactory to the Administrative Agent and to the applicable Issuing Bank(s) or the Swing Line Lender, as
the case may be, in their sole discretion to protect them against the risk of non-payment by such Defaulting Lender. Any cash collateral provided pursuant to this clause (ii) shall be deposited in an interest bearing account promptly after the
execution of the appropriate deposit account agreement and establishment of such account from which the Administrative Agent will release interest to the applicable Borrower on a periodic basis. 

(k) Reallocation of Defaulting Lender Commitment, Etc. If a Lender becomes, and during the period it remains, a Defaulting Lender, the
LC Exposure and the Swing Line Loan Exposure of such Defaulting Lender will, subject to the limitation in the first proviso below, automatically be reallocated (effective on the day such Lender becomes a Defaulting Lender) among the Non-Defaulting
Lenders pro rata in accordance with their respective Commitments; provided that (a) the sum of each Non-Defaulting Lender’s total Credit Exposure, total Swing Line Loan Exposure and total LC Exposure may not in any event exceed the
Commitment of 

  
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such Non-Defaulting Lender as in effect at the time of such reallocation and (b) neither such reallocation nor any payment by a Non-Defaulting Lender pursuant thereto will constitute a
waiver or release of any claim the Borrowers, the Administrative Agent, the Issuing Banks, the Swing Line Lender or any other Lender may have against such Defaulting Lender or cause such Defaulting Lender to be a Non-Defaulting Lender. 

(l) Addition of Letters of Credit. If (i) an Issuing Bank has, at the request of a Borrower, issued a letter of credit in Dollars
other than under this Agreement, (ii) such Borrower decides to add such letter of credit (an “Added Letter of Credit”) to this Agreement as a Letter of Credit and (iii) such Issuing Bank consents in writing (such consent,
and any funding of a draw under such letter of credit, are deemed made by such Issuing Bank in reliance on the agreements of the other Revolving Lenders pursuant to this Section 2.06) to such letter of credit becoming an Added Letter of
Credit, then such Borrower shall give the Administrative Agent and such Issuing Bank at least three Business Days’ (or such shorter period as agreed to by the Administrative Agent and such Issuing Bank) prior notice requesting that such letter
of credit be so added, specifying the Business Day such letter of credit is to be added to this Agreement and attaching thereto a copy of such letter of credit, by hand delivering, faxing or transmitting by electronic communication, if arrangements
for doing so have been approved by the applicable Issuing Bank, to the applicable Issuing Bank and the Administrative Agent. On the Business Day so specified for such letter of credit, such letter of credit shall become an Added Letter of Credit and
become a Letter of Credit deemed issued under this Agreement by the Issuing Bank specified in the relevant notice (the date such letter of credit so becomes an Added Letter of Credit being the “Added L/C Effective Date” for such
letter of credit), if and only if (and, in the case of clauses (A) and (B) below, upon adding such letter of credit such Borrower shall be deemed to represent and warrant that), (A) after giving effect to such inclusion (w) the
LC Exposure in respect of all Letters of Credit issued by the Issuing Banks does not exceed the aggregate of all Letter of Credit Commitments at such time, (x) the LC Exposure in respect of all Letters of Credit issued by any Issuing Bank does
not exceed the Letter of Credit Commitment of such Issuing Bank at such time, (y) the Aggregate Outstanding Credit Exposure shall not exceed the Aggregate Commitments and (z) the Aggregate Outstanding Credit Exposure with respect to NWP or
TGPL do not exceed in each case the Borrower Sublimit, (B) such letter of credit complies in all other respects with this Section 2.06, and (C) such Issuing Bank notifies the Administrative Agent, on or before such Added L/C
Effective Date, that such letter of credit is or will become, as of such Added L/C Effective Date, an Added Letter of Credit. 
 (m)
Existing Letters of Credit. The parties hereto acknowledge and agree that all Existing Letters of Credit are deemed to be issued under this Agreement by the applicable Issuing Bank at the request of the applicable Borrower and shall
constitute Letters of Credit hereunder for all purposes (including Section 2.06(d) and Section 2.06(e)), and no notice requesting issuance thereof shall be required hereunder. Each reference herein to the issuance of a Letter
of Credit shall include any such deemed issuance. All fees accrued on the Existing Letters of Credit to but excluding the date hereof shall be for the account of the applicable “Issuing Bank” and the “Lenders” (as those terms are
used in the Existing Credit Agreement) as provided in the Existing Credit Agreement, and all fees accruing on the Existing Letters of Credit on and after the date hereof shall be for the account of the applicable Issuing Bank thereof and the Lenders
as provided herein. 

  
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 Section 2.07 Funding of Borrowings. 

(a) Except as otherwise provided in Section 2.05 each Lender shall make each Loan to be made by it hereunder on the proposed date
thereof by wire transfer of immediately available funds by 1:00 p.m., New York City time, to the account of the Administrative Agent most recently designated by it for such purpose by notice to the Lenders. The Administrative Agent will make such
Loans available to the applicable Borrower by promptly crediting the amounts so received, in like funds, to an account designated by such Borrower in the applicable Borrowing Request; provided that ABR Loans made to finance the reimbursement
of an LC Disbursement as provided in Section 2.06(e) shall be remitted by the Administrative Agent to the applicable Issuing Bank; and provided further that Loans made or deemed made to repay Swing Line Loans shall be remitted by
the Administrative Agent to the Swing Line Lender or Revolving Lenders in accordance with Section 2.05(d)(iii). 
 (b) Unless
the Administrative Agent shall have received notice from a Revolving Lender prior to the proposed date of any Borrowing that such Lender will not make available to the Administrative Agent such Lender’s Pro Rata Share of such Borrowing, the
Administrative Agent may assume that such Lender has made such Pro Rata Share available on such date in accordance with this Section 2.07 and may, but shall not be required to, in reliance upon such assumption, make available to the
applicable Borrower a corresponding amount. In such event, if a Revolving Lender has not in fact made its Pro Rata Share of the applicable Borrowing available to the Administrative Agent, then the applicable Lender and the applicable Borrower
severally agree to pay to the Administrative Agent forthwith on demand such corresponding amount with interest thereon, for each day from and including the date such amount is made available to such Borrower to but excluding the date of payment to
the Administrative Agent, at (i) in the case of a payment to be made by such Lender, the greater of the Federal Funds Effective Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank
compensation and (ii) in the case of a payment to be made by such Borrower, the interest rate applicable to ABR Loans. If such Borrower and such Lender shall pay such interest to the Administrative Agent for the same or an overlapping period,
the Administrative Agent shall promptly remit to the applicable Borrower the amount of such interest paid by such Borrower for such period. If such Lender pays its Pro Rata Share of the applicable Borrowing to the Administrative Agent, then the
amount so paid shall constitute such Lender’s Loan included in such Borrowing. Any payment by the applicable Borrower shall be without prejudice to any claim such Borrower may have against a Revolving Lender that shall have failed to make such
payment to the Administrative Agent. 
 Section 2.08 Interest Elections. 

(a) Each Borrowing initially shall be of the Type specified in the applicable Borrowing Request and, in the case of a Eurodollar Borrowing,
shall have an initial Interest Period as specified in such Borrowing Request. Thereafter, the applicable Borrower may elect to convert such Borrowing to a different Type or to continue such Borrowing and, in the case of a Eurodollar Borrowing, may
elect Interest Periods therefor, all as provided in this Section. Such Borrower may elect different options with respect to different portions of the affected Borrowing, in which case each such portion shall be allocated ratably among the Revolving
Lenders holding the Loans comprising such Borrowing, and the Loans comprising each such portion shall be considered a separate Borrowing. 

  
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 (b) To make an election pursuant to this Section, the applicable Borrower shall notify the
Administrative Agent of such election by telephone by the time that a Borrowing Request would be required under Section 2.03 if such Borrower were requesting a Borrowing of the Type resulting from such election to be made on the
effective date of such election. Each such telephonic Interest Election Request shall be irrevocable and shall be confirmed promptly by hand delivery, fax or emailed pdf to the Administrative Agent of a written Interest Election Request signed by
such Borrower. 
 (c) Each telephonic and written Interest Election Request shall specify the following information in compliance with
Section 2.03: 
 (i) the Borrowing to which such Interest Election Request applies and, if different options are
being elected with respect to different portions thereof, the portions thereof to be allocated to each resulting Borrowing (in which case the information to be specified pursuant to clauses (iii) and (iv) below shall be specified for each
resulting Borrowing); 
 (ii) the effective date of the election made pursuant to such Interest Election Request, which shall
be a Business Day; 
 (iii) whether the resulting Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing; and 

(iv) if the resulting Borrowing is a Eurodollar Borrowing, the Interest Period to be applicable thereto after giving effect to
such election, which shall be a period contemplated by the definition of the term “Interest Period”. 
 If any such Interest Election Request
requests a Eurodollar Borrowing but does not specify an Interest Period, then such Borrower shall be deemed to have selected an Interest Period of one month’s duration. 

(d) Promptly following receipt of an Interest Election Request, the Administrative Agent shall advise each Revolving Lender of the details
thereof and of such Lender’s portion of each resulting Borrowing. 
 (e) If a Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Borrowing prior to the end of the Interest Period applicable thereto, then, unless such Borrowing is repaid as provided herein, at the end of such Interest Period such Borrowing shall be converted to an ABR
Borrowing. Notwithstanding any contrary provision hereof, if an Event of Default has occurred and is continuing with respect to any Borrower and the Administrative Agent, at the request of the Required Lenders, so notifies such Borrower, then, so
long as an Event of Default with respect to such Borrower is continuing (i) no outstanding Borrowing of such Borrower may be converted to or continued as a Eurodollar Borrowing and (ii) unless repaid, each Borrowing of such Borrower shall
be converted to an ABR Borrowing at the end of the Interest Period applicable thereto. 
 (f) Notwithstanding anything herein to the
contrary, this Section 2.08 shall not apply to Borrowings of Swing Line Loans. 

  
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 Section 2.09 Termination and Reduction of Commitments. 

(a) Unless previously terminated, the Aggregate Commitments shall terminate on the Maturity Date. 

(b) WPZ may at any time terminate, or from time to time reduce, the Aggregate Commitments or the Letter of Credit Commitments and NWP and TGPL
may at any time terminate, or from time to time reduce, the Borrower Sublimit applicable to such Borrower; provided that (i) each reduction of the Aggregate Commitments, the Letter of Credit Commitments or any Borrower Sublimit shall be
in an amount that is an integral multiple of $1,000,000 and not less than $5,000,000, (ii) WPZ shall not terminate or reduce the Aggregate Commitments if, after giving effect to any concurrent prepayment of the Loans in accordance with
Section 2.11, the Aggregate Outstanding Credit Exposure would exceed the Aggregate Commitments, (iii) WPZ shall not terminate or reduce the Letter of Credit Commitments if the LC Exposure would exceed the Letter of Credit
Commitments, as so reduced, (iv) the amount of the Letter of Credit Commitment of any Issuing Bank shall not be reduced to an amount which is less than the aggregate amount of LC Exposure in respect of all Letters of Credit issued or deemed
issued by such Issuing Bank; (v) the Borrower Sublimit for any Borrower may not be reduced to an amount which is less than the greatest, for such Borrower, of the sum of (A) the aggregate outstanding principal amount of Loans owed by such
Borrower plus (B) the aggregate amount of LC Exposure in respect of Letters of Credit issued at the request of such Borrower; and (vi) the Aggregate Commitments shall not be reduced to an amount which is less than the aggregate amount of
the Letter of Credit Commitments, unless the Letter of Credit Commitments are correspondingly reduced at the same time. When NWP or TGPL ceases to be a Borrower, the Borrower Sublimit applicable to such Borrower shall be terminated, such Borrower
shall repay all obligations under the Loan Documents owing by it and all Letters of Credit issued at the request of such Borrower shall be terminated or such Borrower shall provide cash collateral to the Agent in an amount equal to the undrawn face
amount of such Letters of Credit. 
 (c) The applicable Borrower shall notify the Administrative Agent of any election to terminate or
reduce the Aggregate Commitments, the Letter of Credit Commitments or a Borrower Sublimit under paragraph (b) of this Section at least three Business Days prior to the effective date of such termination or reduction, specifying such election
and the effective date thereof. Promptly following receipt of any notice, the Administrative Agent shall advise the Revolving Lenders of the contents thereof. Each notice delivered by a Borrower pursuant to this Section shall be irrevocable;
provided that a notice of termination of the Aggregate Commitments or the Letter of Credit Commitments delivered by any Borrower may state that such notice is conditioned upon the effectiveness of other credit facilities or another event, in
which case such notice may be revoked by such Borrower (by notice to the Administrative Agent on or prior to the specified effective date) if such condition is not satisfied. Any termination or reduction of the Aggregate Commitments, the Letter of
Credit Commitments or a Borrower Sublimit shall be permanent; provided that nothing in this provision shall affect a Borrower’s ability to increase the Letter of Credit Commitments pursuant to Section 2.01(c)(iii). Each
reduction of the Aggregate Commitments and a Borrower Sublimit shall be made ratably among 

  
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the Lenders in accordance with their respective Commitments, except as provided in clause (d) below. Each reduction of the Letter of Credit Commitments being made in conjunction with a
reduction of the Aggregate Commitments pursuant to Section 2.09(b)(vi) above shall be made ratably among the Issuing Banks in accordance with their respective Letter of Credit Commitments. 

(d) WPZ may terminate the unused amount of the Commitment and Letter of Credit Commitment of a Defaulting Lender upon one Business Day’s
prior notice to the Administrative Agent (which will promptly notify the Lenders thereof), provided that such termination will not be deemed to be a waiver or release of any claim the Borrowers, the Administrative Agent, the Issuing Banks or
any Lender may have against such Defaulting Lender. 
 (e) Notwithstanding any other provision of this Section 2.09, if at any
time, WPZ ceases to have Control over, and/or ceases to maintain NWP or TGPL as its Subsidiary, then the Borrower Sublimit applicable to such Borrower shall automatically terminate, such Borrower shall repay all obligations owing by it under the
Loan Documents and all Letters of Credit issued at the request of such Borrower shall be terminated or such Borrower shall provide cash collateral to the Agent in an amount equal to the undrawn face amount of such Letters of Credit or make other
arrangements satisfactory to the relevant Issuing Bank(s) with respect to such Letters of Credit, it being understood that the termination of a Borrower Sublimit for either NWP or TGPL shall not result in a reduction of the Aggregate Commitments.

 (f) Notwithstanding the foregoing, all of the provisions of the Loan Documents which by their terms survive termination of the
Commitments of a Borrower, including, without limitation, those provisions set forth in Section 9.06, shall survive and not be deemed terminated, but shall remain in full force and effect. 

Section 2.10 Repayment of Loans; Evidence of Debt. 

(a) Each Borrower hereby unconditionally promises to pay to the Administrative Agent for the ratable account of each Lender the then unpaid
principal amount of each Loan (and all accrued and unpaid interest thereon) made to such Borrower on the Maturity Date. 
 (b) Each Lender
shall maintain in accordance with its usual practice an account or accounts evidencing the indebtedness of each Borrower to such Lender resulting from each Loan made by such Lender, including the amounts of principal and interest payable and paid to
such Lender from time to time hereunder. 
 (c) The Administrative Agent shall maintain accounts in which it shall record (i) the
amount of each Loan made hereunder, the Type thereof and the Interest Period applicable thereto, (ii) the amount of any principal or interest due and payable or to become due and payable from each Borrower to each Lender hereunder and
(iii) the amount of any sum received by the Administrative Agent hereunder for the account of the Lenders and each Lender’s share thereof. 

(d) The entries made in the accounts maintained pursuant to paragraph (b) or (c) of this Section shall be prima facie
evidence of the existence and amounts of the obligations 

  
 46 

 
recorded therein; provided that the failure of any Lender or the Administrative Agent to maintain such accounts or any error therein shall not in any manner affect the obligation of each
Borrower to repay the Loans made to such Borrower in accordance with the terms of this Agreement. 
 (e) Any Lender may request that Loans
made by it be evidenced by a promissory note. In such event, each Borrower shall prepare, execute and deliver to such Lender a promissory note payable to the order of such Lender and substantially in the form of note attached hereto as Exhibit
E. Thereafter, the Loans evidenced by such promissory note and interest thereon shall at all times (including after assignment pursuant to Section 9.05) be represented by one or more promissory notes in such form payable to the order
of the payee named therein (or, if such promissory note is a registered note, to such payee and its registered assigns). 

Section 2.11 Prepayment of Loans. 

(a) Each Borrower shall have the right at any time and from time to time to prepay any Borrowing, including Borrowings of Swing Line Loans, in
whole or in part, subject to prior notice in accordance with paragraph (b) of this Section. 
 (b) The applicable Borrower shall notify
the Administrative Agent by telephone (confirmed by hand delivery, fax or emailed pdf) of any prepayment hereunder not later than 11:00 a.m., New York City time on the date of prepayment. Each such notice shall be irrevocable and shall specify the
prepayment date and the principal amount of each Borrowing or portion thereof to be prepaid; provided that, any such notice of prepayment may be conditioned upon the effectiveness of other credit facilities or another event. Promptly
following receipt of any such notice relating to a Borrowing, the Administrative Agent shall advise the Lenders of the contents thereof. Each partial prepayment of any Borrowing shall be in an amount that is an integral multiple of $1,000,000 and
not less than $5,000,000. Each prepayment of a Borrowing shall be applied ratably to the Loans included in the prepaid Borrowing. Prepayments shall be accompanied by accrued interest to the extent required by Section 2.13. 

Section 2.12 Fees. 

(a) WPZ agrees to pay to the Administrative Agent for the account of each Lender (other than a Defaulting Lender) a commitment fee on the
daily average unused amount of the Commitment of such Lender for the period from and including the Effective Date up to, but excluding, the date on which the Aggregate Commitments have been terminated at the Applicable Rate for commitment fees (it
being understood that Swing Line Loans (to the extent participations therein have not been funded by the Lenders pursuant to Section 2.05(d)(ii)) will not be deemed a utilization of the Commitments solely for the purposes of this
Section). Accrued commitment fees shall be payable in arrears on the last Business Day of March, June, September and December of each year and on the date on which the Aggregate Commitments terminate, commencing on the first such date to occur after
the Effective Date. All commitment fees shall be computed on the basis of a year of 365 days (or 366 days in a leap year) and shall be payable for the actual number of days elapsed (including the first day but excluding the last day). 

  
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 (b) Each Borrower agrees to pay (i) to the Administrative Agent for the account of each
Lender (other than a Defaulting Lender) a participation fee with respect to its participations in Letters of Credit (other than with respect to Letters of Credit which have been Cash Collateralized to the extent of such Cash Collateralization)
issued at the request of such Borrower, which shall accrue at the same Applicable Rate as interest on Eurodollar Loans on the average daily amount of such Lender’s LC Exposure (excluding any portion thereof attributable to unreimbursed LC
Disbursements) during the period from and including the Effective Date to but excluding the date on which such Lender ceases to have any LC Exposure, and (ii) to the applicable Issuing Bank a fronting fee, which shall accrue at the rate of
0.15% per annum on the average daily amount of the LC Exposure (excluding any portion thereof attributable to unreimbursed LC Disbursements) during the period from and including the Effective Date to but excluding the date on which there ceases
to be any LC Exposure, as well as such Issuing Bank’s standard fees with respect to the issuance, amendment, renewal or extension of any Letter of Credit or processing of drawings thereunder. Participation fees and fronting fees accrued through
and including the last day of March, June, September and December of each year shall be payable quarterly on the third Business Day following the last day of March, June, September and December of each year, commencing on the first such date to
occur after the Effective Date; provided that all such fees shall be payable on the date on which the Aggregate Commitments terminate and any such fees accruing after the date on which the Aggregate Commitments terminate shall be payable on
demand. Any other fees payable to the Issuing Banks pursuant to this paragraph shall be payable within 10 days after demand. All participation fees and fronting fees shall be computed on the basis of a year of 365 days (or 366 days in a leap year)
and shall be payable for the actual number of days elapsed (including the first day but excluding the last day). All fees accrued on a letter of credit that becomes an Added Letter of Credit, to but excluding the Added L/C Effective Date for such
Added Letter of Credit shall be for the account of the entity that issued such Added Letter of Credit, and all fees accruing on such letter of credit on and after such Added L/C Effective Date shall be for the account of the relevant Issuing Bank
thereof and the Lenders as provided herein. 
 (c) WPZ agrees to pay to the Administrative Agent, for its own account, fees payable in the
amounts and at the times separately agreed upon between WPZ and the Administrative Agent as set forth in the applicable Fee Letter. 
 (d)
WPZ agrees to pay to each Joint Lead Arranger, for its own account, fees payable in the amounts and at the times separately agreed upon among WPZ and such Joint Lead Arranger as set forth in the applicable Fee Letter. 

(e) All fees payable hereunder shall be paid on the dates due, in immediately available funds, to the Administrative Agent (or to the
applicable Issuing Bank or the Swing Line Lender, in the case of fees payable to it) for distribution, in the case of facility fees and participation fees, to the Revolving Lenders or the Joint Lead Arrangers, as applicable. Fees paid shall not be
refundable under any circumstances. 
 (f) Anything herein to the contrary notwithstanding, during such period as a Lender is a Defaulting
Lender, such Defaulting Lender will not be entitled to any fees accruing during such period pursuant to this Section 2.12 (without prejudice to the rights of the Lenders other than Defaulting Lenders in respect of such fees) nor shall
any such fee be payable by any 

  
 48 

 
Borrower, provided that (a) for the avoidance of doubt and without duplication of fees, to the extent that a portion of the LC Exposure or the Swing Line Loan Exposure of such
Defaulting Lender is reallocated to the Non-Defaulting Lenders pursuant to Section 2.06(k), such fees that would have accrued for the benefit of such Defaulting Lender will instead accrue for the benefit of and be payable to such
Non-Defaulting Lenders (other than with respect to Letters of Credit or Swing Line Loans, which have been Cash Collateralized to the extent of such Cash Collateralization), pro rata in accordance with their respective Commitments, and
(b) to the extent any portion of such LC Exposure or Swing Line Loan Exposure cannot be so reallocated, such fees will instead accrue for the benefit of and be payable to the Issuing Banks and the Swing Line Lender, as their interests appear
(and the pro rata payment provisions of Section 2.18 will automatically be deemed adjusted to reflect the provisions of this Section). 

Section 2.13 Interest. 

(a) The Loans comprising each ABR Borrowing shall bear interest on each day at the Alternate Base Rate for such day plus the Applicable Rate.

 (b) The Loans comprising each Eurodollar Borrowing shall bear interest at the LIBO Rate for the Interest Period in effect for such
Borrowing plus the Applicable Rate. 
 (c) Each Swing Line Loan shall bear interest on the outstanding principal amount thereof, for each
day from and including the day such Swing Line Loan is made to but excluding the date it is paid, at a rate per annum equal to the Swing Line Rate for such day. 

(d) Notwithstanding the foregoing, upon the occurrence and during the continuance of any Event of Default with respect to any Borrower, if any
principal of or interest on any Loan or any fee or other amount payable by such Borrower hereunder is not paid when due, whether at stated maturity, upon acceleration or otherwise, such overdue amount shall bear interest, after as well as before
judgment, at a rate per annum equal to (i) in the case of overdue principal of any Loan, 2% plus the rate otherwise applicable to such Loan as provided in the preceding paragraphs of this Section or (ii) in the case of any other amount, 2%
plus the rate applicable to ABR Loans as provided in paragraph (a) of this Section. 
 (e) Accrued interest on each Loan shall be
payable in arrears on each Interest Payment Date for such Loan and upon termination of the Aggregate Commitments or, if a Borrower ceases to be a Borrower, on such date; provided that (i) interest accrued pursuant to paragraph
(d) of this Section shall be payable on demand, (ii) in the event of any repayment or prepayment of any Loan (other than a prepayment of an ABR Loan prior to the end of the Availability Period), accrued interest on the principal amount
repaid or prepaid shall be payable on the date of such repayment or prepayment and (iii) in the event of any conversion of any Eurodollar Loan prior to the end of the current Interest Period therefor, accrued interest on such Loan shall be
payable on the effective date of such conversion. 
 (f) All interest determined by reference to the LIBO Rate or clauses (b) or
(c) of the definition of Alternate Base Rate shall be computed on the basis of a year of 360 days, and all other interest shall be computed on the basis of a year of 365 days (or 366 days in a leap year), and in each case shall be payable for
the actual number of days elapsed (including the first day 

  
 49 

 
but excluding the last day). The applicable Alternate Base Rate or LIBO Rate shall be determined by the Administrative Agent, and such determination shall be conclusive absent manifest error.

 (g) Any Borrower (with respect to Loans made to it) shall pay to each Lender, so long as such Lender shall be required under regulations
of the Board of Governors of the Federal Reserve System of the United States of America to maintain reserves with respect to liabilities or assets consisting of or including Eurocurrency Liabilities, additional interest on the unpaid principal
amount of each Borrowing of such Lender during such periods as such Borrowing is a Eurodollar Borrowing, from the date of such Borrowing until such principal amount is paid in full, at an interest rate per annum equal at all times to the remainder
obtained by subtracting (i) the LIBO Rate for the Interest Period in effect for such Eurodollar Borrowing from (ii) the rate obtained by dividing such LIBO Rate by a percentage equal to 100% minus the Eurodollar Rate Reserve Percentage of
such Lender for such Interest Period. Such additional interest shall be determined by such Lender. Any Borrower (with respect to Loans made to it) shall from time to time, within 15 days after demand (which demand shall be accompanied by a
certificate comporting with the requirements set forth in Section 2.15(c)) by such Lender (with a copy of such demand and certificate to the Administrative Agent) pay to the Lender giving such notice such additional interest;
provided, however, that no Borrower shall be required to pay to such Lender any portion of such additional interest that accrued more than 90 days prior to any such demand, unless such additional interest was not determinable on the date
that is 90 days prior to such demand. 
 Section 2.14 Alternate Rate of Interest. If prior to the commencement of any
Interest Period for a Eurodollar Borrowing: 
 (a) the Administrative Agent determines (which determination shall be conclusive absent
manifest error) that adequate and reasonable means do not exist for ascertaining the LIBO Rate, as applicable, for such Interest Period; or 

(b) the Administrative Agent is advised by the Required Lenders that the LIBO Rate, as applicable, for such Interest Period will not
adequately and fairly reflect the cost to such Lenders of making or maintaining their Loans included in such Borrowing for such Interest Period; 
 then the
Administrative Agent shall give notice thereof to the Borrowers and the Lenders by telephone or telecopy as promptly as practicable thereafter and, until the Administrative Agent notifies the Borrowers and the Lenders that the circumstances giving
rise to such notice no longer exist, (i) any Interest Election Request that requests the conversion of any Borrowing to, or continuation of any Borrowing as, a Eurodollar Borrowing shall be ineffective, and (ii) if any Borrowing Request
requests a Eurodollar Borrowing, such Borrowing shall be made as an ABR Borrowing; provided that if the circumstances giving rise to such notice affect only one Type of Borrowings, then the other Type of Borrowings shall be permitted. 

Section 2.15 Increased Costs. 

(a) Increased Costs Generally. If any Change in Law shall: 

(i) impose, modify or deem applicable any reserve, special deposit, compulsory loan, insurance charge or similar requirement
against assets of, deposits with or for the account of, or credit extended or participated in by, any Lender Party; 

  
 50 

 (ii) subject any Recipient to any Tax of any kind whatsoever with respect to this
Agreement, any Letter of Credit, any participation in a Letter of Credit or any Eurodollar Loan made by it, or change the basis of taxation of payments to such Recipient in respect thereof (except for any Indemnified Taxes and the imposition of, or
any change in the rate of, any Tax described in clauses (a)(ii) through (d) of the definition of Excluded Taxes payable by such Recipient); or 

(iii) impose on any Lender Party or the London interbank market any other condition, cost or expense affecting this Agreement
or Eurodollar Loans made by such Lender or any Letter of Credit or participation therein; 
 and the result of any of the foregoing shall be to increase the
cost to such Lender Party of making, funding or maintaining any Loan (or of maintaining its obligation to make any such Loan), or to increase the cost to such Lender Party of participating in, issuing or maintaining any Letter of Credit (or of
maintaining its obligation to participate in or to issue any Letter of Credit), or to reduce the amount of any sum received or receivable by such Lender Party hereunder (whether of principal, interest or any other amount) then, upon request of such
Lender Party, the applicable Borrower will pay to such Lender Party such additional amount or amounts as will compensate such Lender Party for such additional costs incurred or reduction suffered, in each case to the extent applicable to the Loans
or LC Exposure related to such Borrower. 
 (b) Capital Requirements. If any Lender Party determines that any Change in Law affecting
such Lender Party or any lending office of such Lender Party or such Lender Party’s holding company, if any, regarding capital or liquidity requirements has or would have the effect of reducing the rate of return on such Lender Party’s
capital or on the capital of such Lender Party’s holding company, if any, as a consequence of this Agreement, the commitments of such Lender or the Loans made by, or participations in Letters of Credit held by, such Lender, or the Letters of
Credit issued by such Issuing Bank, to a level below that which such Lender Party or such Lender Party’s holding company could have achieved but for such Change in Law (taking into consideration such Lender Party’s policies and the
policies of such Lender Party’s holding company with respect to capital adequacy or liquidity), then from time to time the applicable Borrower will pay to such Lender Party such additional amount or amounts as will compensate such Lender Party
or such Lender Party’s holding company for any such reduction suffered, in each case to the extent applicable to the Loans or LC Exposure related to such Borrower. 

(c) Certificates for Reimbursement. A certificate of a Lender Party setting forth the amount or amounts necessary to compensate such
Lender Party or its holding company, as the case may be, as specified in paragraph (a) or (b) of this Section, showing the computation thereof and delivered to the applicable Borrower shall be conclusive absent manifest error. Such
certificate shall further certify that such Lender Party is making similar demands of its other similarly situated borrowers. Any applicable Borrower shall pay such Lender Party the amount shown as owed by it and due on any such certificate within
10 days after receipt thereof. 

  
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 (d) Delay in Requests. Failure or delay on the part of any Lender Party to demand
compensation pursuant to this Section shall not constitute a waiver of such Lender Party’s right to demand such compensation, provided that no Borrower shall be required to compensate a Lender Party pursuant to this Section for any
increased costs incurred or reductions suffered more than ninety days prior to the date that such Lender Party notifies such Borrower of the Change in Law giving rise to such increased costs or reductions and of such Lender Party’s intention to
claim compensation therefor (except that, if the Change in Law giving rise to such increased costs or reductions is retroactive, then the ninety day period referred to above shall be extended to include the period of retroactive effect thereof).

 Section 2.16 Break Funding Payments. In the event of (a) the payment of any principal of any Eurodollar Loan other than
on the last day of an Interest Period applicable thereto (including as a result of an Event of Default), (b) the conversion of any Eurodollar Loan other than on the last day of the Interest Period applicable thereto, (c) the failure to
borrow, convert, continue or prepay any Loan on the date specified in any notice delivered pursuant hereto (regardless of whether such notice may be revoked under Section 2.11(b) and is revoked in accordance therewith), or (d) the
assignment of any Eurodollar Loan other than on the last day of the Interest Period applicable thereto as a result of a request by the Borrowers pursuant to Section 2.19, then, in any such event, the applicable Borrower shall compensate
each Lender for the loss, cost and expense (excluding loss of anticipated profits) attributable to such event. A certificate of any Lender setting forth, in reasonable detail showing the computation thereof, any amount or amounts that such Lender is
entitled to receive pursuant to this Section shall be delivered to the applicable Borrower and shall be conclusive absent manifest error. Such Borrower shall pay such Lender the amount shown as due on any such certificate within 10 days after
receipt thereof, if such certificate complies herewith. 
 Section 2.17 Taxes. 

(a) Payments Free of Taxes. Any and all payments by or on account of any obligation of each Borrower hereunder or under any other Loan
Document shall be made free and clear of and without reduction or withholding for any Taxes, provided that if an applicable withholding agent shall be required by applicable law to deduct or withhold any Taxes from such payments, then
(i) if such Tax is an Indemnified Tax, the sum payable by such Borrower shall be increased as necessary so that after making all required deductions or withholdings (including deductions applicable to additional sums payable under this Section)
the applicable Recipient receives an amount equal to the sum it would have received had no such deductions or withholdings been made, (ii) the applicable withholding agent shall make such deductions and (iii) such withholding agent shall
timely pay the full amount deducted to the relevant Governmental Authority in accordance with applicable law. 
 (b) Payment of Other
Taxes by Borrowers. Without limiting the provisions of paragraph (a) above, each Borrower shall timely pay any Other Taxes related to it to the relevant Governmental Authority in accordance with applicable law. 

(c) Indemnification by Borrowers. Each Borrower shall indemnify each Recipient within 10 days after demand therefor, for the full
amount of any Indemnified Taxes or Other Taxes (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to 

  
 52 

 
amounts payable under this Section) payable or paid by such Recipient or required to be withheld or deducted from a payment to such Recipient and any penalties, interest and reasonable expenses
arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability
delivered to a Borrower by a Recipient (with a copy to the Administrative Agent), or by the Administrative Agent on its own behalf or on behalf of a Recipient shall be conclusive absent manifest error. 

(d) Indemnification by the Lenders. Each Lender shall severally indemnify the Administrative Agent, within 10 days after demand
therefor, for (i) any Indemnified Taxes attributable to such Lender (but only to the extent that the Borrowers have not already indemnified the Administrative Agent for such Indemnified Taxes and without limiting the obligation of any Borrower
to do so), (ii) any Taxes attributable to such Lender’s failure to comply with the provisions of Section 9.05(d) relating to the maintenance of a Participant Register and (iii) any Excluded Taxes attributable to such
Lender, in each case, that are payable or paid by the Administrative Agent in connection with any Borrower, and any reasonable expenses arising therefrom or with respect thereto, whether or not such Taxes were correctly or legally imposed or
asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to any Lender by the Administrative Agent shall be conclusive absent manifest error. Each Lender hereby authorizes the
Administrative Agent to set off and apply any and all amounts at any time owing to such Lender under any Loan Document or otherwise payable by the Administrative Agent to the Lender from any other source against any amount due to the Administrative
Agent under this paragraph (d). 
 (e) Evidence of Payments. As soon as practicable after any payment of Indemnified Taxes or Other
Taxes by a Borrower to a Governmental Authority pursuant to this Section 2.17, such Borrower shall deliver to the Administrative Agent the original or a certified copy of a receipt issued by such Governmental Authority evidencing such
payment, a copy of the return reporting such payment or other evidence of such payment reasonably satisfactory to the Administrative Agent. 

(f) Status of Lenders. 

(i) Any Lender that is entitled to an exemption from or reduction of withholding Tax with respect to payments made under any
Loan Document shall deliver to the applicable Borrower and the Administrative Agent, at the time or times prescribed by applicable law or reasonably requested by the Borrowers or the Administrative Agent, such properly completed and executed
documentation prescribed by applicable law or reasonably requested by the Borrowers or the Administrative Agent as will permit such payments to be made without withholding or at a reduced rate of withholding. In addition, any Lender, if requested by
the Borrowers or the Administrative Agent, shall deliver such other documentation prescribed by applicable requirement of law or reasonably requested by the Borrowers or the Administrative Agent as will enable the Borrowers or the Administrative
Agent to determine whether or not such Lender is subject to backup withholding or information reporting requirements. Notwithstanding anything to the contrary in the preceding two sentences, the completion, execution and submission of such
documentation (other than such documentation either set forth in 

  
 53 

 
Section 2.17(f)(ii)(A), (ii)(B) and (ii)(D) below) shall not be required if in the Lender’s reasonable judgment such completion, execution or submission would
subject such Lender to any material unreimbursed cost or expense or would materially prejudice the legal or commercial position of such Lender. 

(ii) Without limiting the generality of the foregoing, 

(A) any Lender that is a U.S. Person shall deliver to the Borrowers and the Administrative Agent on or prior to the date on
which such Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of a Borrower or the Administrative Agent), executed originals of IRS Form W-9 certifying that such Lender is exempt from U.S.
Federal backup withholding Tax; 
 (B) any Foreign Lender shall deliver to the Borrowers and the Administrative Agent (in
such number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of a Borrower or the
Administrative Agent, but only if such Foreign Lender is legally entitled to do so), whichever of the following is applicable: (i) in the case of a Foreign Lender claiming the benefits of an income Tax treaty to which the United States is a
party (x) with respect to payments of interest under any Loan Document, executed originals of IRS Form W-8BEN or IRS Form W-8BEN-E establishing an exemption from, or reduction of, U.S. Federal withholding Tax pursuant to the
“interest” article of such Tax treaty and (y) with respect to any other applicable payments under any Loan Document, IRS Form W-8BEN or IRS Form W-8BEN-E establishing an exemption from, or reduction of, U.S. Federal withholding Tax
pursuant to the “business profits” or “other income” article of such Tax treaty; (ii) executed originals of IRS Form W-8ECI; (iii) in the case of a Foreign Lender claiming the benefits of the exemption for portfolio
interest under Section 881(c) of the Code, (x) a certificate substantially in the form of Exhibit F-1 to the effect that such Foreign Lender is not a “bank” within the meaning of Section 881(c)(3)(A) of the Code, a
“10 percent shareholder” of any Borrower within the meaning of Section 881(c)(3)(B) of the Code, or a “controlled foreign corporation” described in Section 881(c)(3)(C) of the Code (a “U.S. Tax Compliance
Certificate”) and (y) executed originals of IRS Form W-8BEN or IRS Form W-8BEN-E; or (iv) to the extent a Foreign Lender is not the beneficial owner, executed originals of IRS Form W-8IMY, accompanied by IRS Form W-8ECI, IRS Form
W-8BEN or IRS Form W-8BEN-E, a U.S. Tax Compliance Certificate substantially in the form of Exhibit F-2 or Exhibit F-3, IRS Form W-9, and/or other certification documents from each beneficial owner, as applicable; provided that
if the Foreign Lender is a partnership and one or more direct or indirect partners of such Foreign Lender are claiming the portfolio interest exemption, such Foreign Lender may provide a U.S. Tax Compliance Certificate substantially in the form of
Exhibit F-4 on behalf of each such direct and indirect partner; 

  
 54 

 (C) any Foreign Lender shall, to the extent it is legally entitled to do so,
deliver to the Borrowers and the Administrative Agent (in such number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon
the reasonable request of a Borrower or the Administrative Agent), executed originals of any other form prescribed by an applicable law as a basis for claiming exemption from or a reduction in U.S. Federal withholding Tax, duly completed, together
with such supplementary documentation as may be prescribed by applicable law to permit the Borrowers or the Administrative Agent to determine the withholding or deduction required to be made; and 

(D) if a payment made to a Lender under any Loan Document would be subject to any withholding Tax imposed by FATCA if such
Lender were to fail to comply with the requirements of FATCA (including those contained in Section 1471(b) or 1472(b) of the Code), such Lender shall deliver to the Borrowers and the Administrative Agent at the time or times prescribed by law
and at such time or times reasonably requested by the Borrowers or the Administrative Agent, such documentation prescribed by applicable law (including as prescribed by Section 1471(b)(3)(C)(i) of the Code) and such additional documentation
reasonably requested by the Borrowers or the Administrative Agent as may be necessary for the Borrowers and the Administrative Agent to comply with their obligations under FATCA, to determine that such Lender has or has not complied with such
Lender’s obligations under FATCA or to determine the amount to deduct and withhold from such payment. Solely for purposes of this clause (D), “FATCA” shall include any amendments made to FATCA after the date of this Agreement. 

Each Lender agrees that if any form or certification it previously delivered expires or becomes obsolete or inaccurate in any respect, it shall update such
form or certification or promptly notify the Borrowers and the Administrative Agent in writing of its legal inability to do so. 
 (g)
Treatment of Certain Refunds. If any Recipient determines in its sole discretion exercised in good faith, that it has received a refund of any Taxes as to which it has been indemnified by the Borrowers or with respect to which the Borrowers
have paid pursuant to this Section 2.17 (including by the payment of additional amounts pursuant to this Section 2.17), such Recipient shall pay to the Borrowers an amount equal to such refund (but only to the extent of
indemnity payments made, or additional amounts paid by the Borrowers under this Section with respect to the Taxes giving rise to such refund), net of reasonable out-of-pocket expenses directly related to the receipt of such refund by the Recipient
and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund) provided that, the Borrowers, upon the request of such Recipient, agree to repay the amount paid over to the Borrowers
pursuant to this paragraph (g) (plus any penalties, interest or other charges imposed by the relevant Governmental Authority) to the Recipient in the event the Recipient is required to repay such refund to such Governmental Authority.
Notwithstanding anything to the contrary in this paragraph (g), in no event will the applicable Recipient be required to pay any amount to the Borrowers pursuant to this paragraph (g) the payment of which would place such Recipient in a less
favorable net after-Tax position than the Recipient would have been in if the indemnification 

  
 55 

 
payments or additional amounts giving rise to such refund had never been paid. This paragraph shall not be construed to require the Administrative Agent or Any Lender Party to make available its
Tax returns (or any other information relating to its Taxes that it deems confidential) to the Borrowers or any other Person. 
 (h)
FATCA Grandfathering. For purposes of determining withholding Taxes imposed under FATCA, each Borrower and the Administrative Agent shall treat (and the Lenders hereby authorize each Borrower and the Administrative Agent to treat) this
Agreement and any Loan as not qualifying as a “grandfathered obligation” within the meaning of Treasury Regulation Section 1.1471-2(b)(2)(i), whether or not there has been a significant modification of a debt instrument for U.S.
Federal income tax purposes. 
 (i) Survival. Each party’s obligations under this Section 2.17 shall survive the
resignation or replacement of the Administrative Agent or any assignment of rights by, or the replacement of, a Lender, the termination of the Commitments and the repayment, satisfaction or discharge of all obligations under any Loan Document. 

Section 2.18 Payments Generally; Pro Rata Treatment; Sharing of Set-offs. 

(a) Each Borrower shall make each payment required to be made by it hereunder (whether of principal, interest, fees or reimbursement of LC
Disbursements, or of amounts payable under Section 2.15, 2.16 or 2.17, or otherwise) prior to 1:00 p.m., New York City time, on the date when due, in immediately available funds, without set-off or counterclaim. Any amounts
received after such time on any date may, in the discretion of the Administrative Agent, be deemed to have been received on the date of such payment or on the next succeeding Business Day for purposes of calculating interest and fees thereon. All
such payments shall be made to the Administrative Agent at its offices at Citicorp North America, 399 Park Avenue, New York, New York 10043, Attention: Williams Partners L.P. Account Officer, except payments to be made directly to an Issuing Bank or
the Swing Line Lender as expressly provided herein and except that payments pursuant to Sections 2.15, 2.16, 2.17 and 9.04 shall be made directly to the Persons entitled thereto. The Administrative Agent shall distribute
any such payments received by it for the account of any other Person to the appropriate recipient promptly following receipt thereof. If any payment hereunder shall be due on a day that is not a Business Day, the date for payment shall be extended
to the next succeeding Business Day, and, in the case of any payment accruing interest, interest thereon shall be payable for the period of such extension. All payments hereunder shall be made in Dollars. 

(b) If at any time insufficient funds are received by and available to the Administrative Agent to pay fully all amounts of principal,
unreimbursed LC Disbursements, interest and fees then due hereunder, such funds shall be applied (i) first, towards payment of interest and fees then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of
interest and fees then due to such parties, and (ii) second, towards payment of principal and unreimbursed LC Disbursements then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of principal and
unreimbursed LC Disbursements then due to such parties. 

  
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 (c) If any Revolving Lender shall, by exercising any right of set-off or counterclaim or
otherwise, obtain payment in respect of any principal of or interest on any of its Loans or participations in LC Disbursements resulting in such Lender receiving payment of a greater proportion of the aggregate amount of its Loans and participations
in LC Disbursements and accrued interest thereon than the proportion received by any other Revolving Lender, then the Revolving Lender receiving such greater proportion shall purchase (for cash at face value) participations in the Loans and
participations in LC Disbursements of other Lenders to the extent necessary so that the benefit of all such payments shall be shared by the Revolving Lenders ratably in accordance with the aggregate amount of principal of and accrued interest on
their respective Loans and participations in LC Disbursements; provided that (i) if any such participations are purchased and all or any portion of the payment giving rise thereto is recovered, such participations shall be rescinded and
the purchase price restored to the extent of such recovery, without interest, and (ii) the provisions of this Section 2.18(c) shall not be construed to apply to any payment made by any Borrower pursuant to and in accordance with the
express terms of this Agreement (including payments made to Declining Lenders on the Maturity Date applicable to such Declining Lender) or any payment obtained by a Revolving Lender as consideration for the assignment of or sale of a participation
in any of its Loans or participations in LC Disbursements to any assignee or participant, other than to any Borrower or any Subsidiary or Affiliate thereof (as to which the provisions of this paragraph shall apply). Each Borrower consents to the
foregoing and agrees, to the extent it may effectively do so under applicable law, that any Lender acquiring a participation pursuant to this subsection (c) may exercise against such Borrower rights of set-off and counterclaim with respect to
such participation as fully as if such Lender were a direct creditor of such Borrower in the amount of such participation. 
 (d)
[Reserved]. 
 (e) If any Lender shall fail to make any payment required to be made by it pursuant to Sections 2.06(d),
2.06(e), 2.07(b), or 9.04(c), then the Administrative Agent may, in its discretion (notwithstanding any contrary provision hereof), apply any amounts thereafter received by the Administrative Agent for the account of such Lender
to satisfy such Lender’s obligations under such Sections until all such unsatisfied obligations are fully paid. In the event that any Defaulting Lender exercises any such right of setoff, (x) all amounts so set off will be paid over
immediately to the Administrative Agent for further application in accordance with the provisions of Sections 2.06(d), 2.06(e), 2.07(b), or 9.04(c), and, pending such payment, will be segregated by such Defaulting Lender
from its other funds and deemed held in trust for the benefit of the Administrative Agent, the Issuing Banks, and the Lenders and (y) the Defaulting Lender will provide promptly to the Administrative Agent a statement describing in reasonable
detail the obligations owing to such Defaulting Lender as to which it exercised such right of setoff. 
 Section 2.19 Mitigation
Obligations; Replacement of Lenders. 
 (a) If any Lender requests compensation under Section 2.13(g) or
Section 2.15 or if any Borrower is required to pay any Indemnified Taxes to any Lender or any Governmental Authority for the account of any Lender, then such Lender shall use reasonable efforts to designate a different lending
office for funding or booking its Loans hereunder or to assign its 

  
 57 

 
rights and obligations hereunder to another of its offices, branches or affiliates, if, in the judgment of such Lender, such designation or assignment (i) would eliminate or reduce amounts
payable pursuant to Sections 2.13(g), 2.15 or 2.17, as the case may be, in the future and (ii) would not subject such Lender to any unreimbursed cost or expense and would not otherwise be disadvantageous to such Lender. Any
applicable Borrower required to make any payment under Sections 2.13(g), 2.15 or 2.17 hereby agrees to pay all reasonable costs and expenses incurred by any Lender in connection with any such designation or assignment. Subject
to the foregoing, Lenders agree to use reasonable efforts to select lending offices which will minimize Indemnified Taxes and other costs and expenses for the Borrowers. 

(b) If any Lender requests compensation under Section 2.13(g) or Section 2.15, or if any Borrower is required to pay
any Indemnified Taxes to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 2.17, or if any Lender is a Defaulting Lender or a Declining Lender, or if any Lender fails to approve an amendment,
waiver or other modification to this Agreement that requires the approval of all Lenders and at least the Required Lenders have approved such amendment, waiver or other modification, then the Borrowers may, at their sole expense and effort, upon
notice to such Lender and the Administrative Agent, require such Lender to assign and delegate, without recourse (in accordance with and subject to the restrictions contained in Section 9.05), all its interests, rights and obligations
under this Agreement to an Eligible Assignee that shall assume such obligations (which assignee may be another Lender, if a Lender accepts such assignment); provided that (i) the Borrowers shall have received the prior written consent of
the Administrative Agent, the Swing Line Lender and the Issuing Banks, which consent shall not unreasonably be withheld or delayed, (ii) such Lender shall have received payment of an amount equal to the outstanding principal of its Loans and
participations in LC Disbursements, accrued interest thereon, accrued fees and all other amounts payable to it hereunder and under the other Loan Documents (including any amounts under Section 2.16), from the assignee (to the extent of
such outstanding principal and accrued interest and fees) or the applicable Borrower or Borrowers (in the case of all other amounts) and (iii) in the case of any such assignment resulting from a claim for compensation under
Section 2.13(g) or Section 2.15 or payments required to be made pursuant to Section 2.17, such assignment will result in a reduction in such compensation or payments; provided further that in the case of
any assignment of a Declining Lender’s Commitments, the relevant replacement Lender, after giving effect to such assignment, elects to extend its Commitment pursuant to Section 2.04 to a date which shall be the latest Maturity Date
for any Commitments then in effect under this Agreement (after giving effect to the latest Extension Effective Date). A Lender shall not be required to make any such assignment and delegation if, prior thereto, as a result of a waiver by such Lender
or otherwise, the circumstances entitling the Borrowers to require such assignment and delegation cease to apply. If any Lender refuses to assign and delegate all its interests, rights and obligations under this Agreement after the Borrowers have
required such Lender to do so as a result of a claim for compensation under Section 2.13(g) or Section 2.15 or payments required to be made pursuant to Section 2.17, such Lender shall not be entitled to receive
such compensation or required payments. 
 (c) If the Borrowers, the Administrative Agent, the Issuing Banks and the Swing Line Lender agree
in writing in their discretion that a Lender that is a Defaulting Lender should no longer be deemed to be a Defaulting Lender, the Administrative Agent will so notify the parties hereto, whereupon as of the effective date specified in such notice
and subject to any conditions 

  
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set forth therein, such Lender will, to the extent applicable, purchase such portion of outstanding Loans of the other Revolving Lenders and/or make such other adjustments as the Administrative
Agent may determine to be necessary to cause the Credit Exposure, LC Exposure, and Swing Line Loan Exposure of the Revolving Lenders to be on a pro rata basis in accordance with their respective Commitments, whereupon such Lender will
cease to be a Defaulting Lender and will be a Non-Defaulting Lender (and such Credit Exposure of each Revolving Lender will automatically be adjusted on a prospective basis to reflect the foregoing); provided that no adjustments will be made
retroactively with respect to fees accrued or payments made by or on behalf of the Borrowers while such Lender was a Defaulting Lender; and provided, further, that except to the extent otherwise expressly agreed by the affected parties, no
change hereunder from Defaulting Lender to Non-Defaulting Lender will constitute a waiver or release of any claim of any party hereunder arising from such Lender having been a Defaulting Lender. 

Section 2.20 Nature of Obligations. Notwithstanding anything in this Agreement to the contrary, the respective obligations of the
Borrowers under the Loan Documents are several and not joint. For avoidance of doubt, and without limitation of the preceding sentence, it is agreed that (i) no Borrower shall be liable for the Loans (or interest or fees with respect thereto)
made to a different Borrower under Section 2.01, and no Borrower shall be liable for the LC Disbursements (or related fees) with respect to Letters of Credit issued at the request of a different Borrower pursuant to
Section 2.06, (ii) with respect to each Borrower, the obligations set forth in Section 2.15 shall only apply in respect of the Commitment of any Lender Party to lend to, or to issue (or purchase participations in)
Letters of Credit issued at the request of, such Borrower, (iii) with respect to the indemnification obligations set forth in Section 2.17, each Borrower shall only be responsible for such obligations that result from Taxes or Other
Taxes in connection with Loans made to, or Letters of Credit issued at the request of, or that otherwise pertain to, such Borrower or any of its Subsidiaries, (iv) with respect to any representation and warranty made by a Borrower pursuant to
Section 4.02, such representation and warranty shall only be made by such Borrower as provided in clause (v) of this Section 2.20, (v) with respect to the representations and warranties made in Article III
or, if applicable, any other Loan Document, each Borrower makes such representations and warranties only with respect to, and only to the extent applicable to, such Borrower and its Subsidiaries, and (vi) with respect to covenants set forth in
Articles V and VI, each Borrower is only responsible for compliance with such covenants only with respect to, and only to the extent applicable to, such Borrower and its Subsidiaries. 

ARTICLE III 

REPRESENTATIONS AND WARRANTIES 

Each Borrower, solely with respect to itself and, to the extent set forth below, its Subsidiaries, represents and warrants to the Lenders
that, on the Effective Date, on the date of each Borrowing by such Borrower or issuance or increase in the amount of any Letter of Credit for such Borrower and each Added L/C Effective Date, except with respect to Sections 3.07 and
3.08 in each case as specified therein, which shall only be represented and warranted as of the Effective Date as provided therein: 

Section 3.01 Organization; Powers. Such Borrower and each of its Material Subsidiaries is validly existing and (if applicable) in
good standing under the laws of the jurisdiction of its organization, has all requisite power and authority to carry on its business in all 

  
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material respects as now conducted and is qualified to do business in, and (if applicable) is in good standing in, every jurisdiction where such qualification is required, except where the
failure to do so or to be validly existing and in good standing or to have such power and authority, individually or in the aggregate, would not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower. 

Section 3.02 Authorization; Enforceability. The Transactions and the performance of its obligations contemplated thereby are
within such Borrower’s partnership or limited liability company powers, as applicable, and have been duly authorized by all necessary partnership, limited liability company and, if required, partner action, as applicable. This Agreement has
been duly executed and delivered by such Borrower and constitutes a legal, valid and binding obligation of such Borrower, enforceable against such Borrower in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization,
moratorium or other laws affecting creditors’ rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law. 

Section 3.03 Governmental Approvals; No Conflicts. No material authorization or approval or other action by, and no notice to or
filing with, any Governmental Authority is required for the due execution, delivery and performance by such Borrower of any Loan Document to which it is a party, or the consummation of the transactions contemplated thereby. The execution, delivery
and performance by such Borrower of the Loan Documents to which it is shown as being a party and the consummation of the transactions contemplated thereby do not contravene (a) such Borrower’s organizational documents or (b) any law
or any restriction under any material agreement binding on such Borrower and will not result in or require the creation or imposition of any Lien prohibited by this Agreement. 

Section 3.04 Financial Condition. Pre-Merger WPZ has heretofore furnished to the Lenders its consolidated balance sheet and
statements of income and cash flows (a) as of and for the fiscal year ended December 31, 2013, reported on by Ernst & Young LLP, independent public accountants, and (b) as of and for the fiscal quarter and the portion of the
fiscal year ended September 30, 2014. Such financial statements (i) were prepared in accordance with GAAP, except as otherwise expressly noted therein, and (ii) present fairly, in all material respects, the financial position and
results of operations and cash flows of the businesses of Pre-Merger WPZ and its consolidated subsidiaries as of such dates and for such periods in accordance with GAAP. 

Section 3.05 Litigation. Except as set forth in the annual report on Form 10-K for the year ended December 31, 2013, the
quarterly reports on Form 10-Q or current reports on Form 8-K filed subsequent thereto but prior to the Closing Date, or any amendments thereof filed subsequent thereto but prior to the Closing Date, in each case of any Borrower or Pre-Merger WPZ,
or as set forth in the registration statement on Form S-4 of WPZ, or any amendments thereof filed subsequent thereto but prior to the Closing Date, there are no actions, suits or proceedings by or before any arbitrator or Governmental Authority
pending against or, to the knowledge of such Borrower, threatened in writing against such Borrower or any of its Subsidiaries (i) as to which there is a reasonable possibility of an adverse determination and that would reasonably be expected,
individually or in the aggregate, to result in a Material Adverse Effect with respect to such Borrower or (ii) that purport to adversely affect the legality, validity and enforceability of the Loan Documents and are non-frivolous (as reasonably
determined by the 

  
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Administrative Agent); provided, that this representation, when made, shall not constitute an admission that any action, suit or proceeding set forth in any annual report on Form 10-K, any
quarterly report on Form 10-Q, any current report on Form 8-K, or set forth in the Form S-4, or any amendments to any of the foregoing, in each case referred to above would result in a Material Adverse Effect due to an adverse determination, if any.

 Section 3.06 Environmental Matters. Except as set forth in the annual report on Form 10-K for the year ended
December 31, 2013, the quarterly reports on Form 10-Q or current reports on Form 8-K filed subsequent thereto but prior to the Closing Date, or any amendments thereof filed subsequent thereto but prior to the Closing Date, in each case of any
Borrower or Pre-Merger WPZ, or as set forth in the registration statement on Form S-4 of WPZ, or any amendments thereof filed subsequent thereto but prior to the Closing Date, such Borrower and its Subsidiaries have reasonably concluded that they:
(a) are in compliance with all applicable Environmental Laws, except to the extent that any non-compliance would not reasonably be expected to have a Material Adverse Effect with respect to such Borrower; (b) are not subject to any
judicial, administrative, government, regulatory or arbitration proceeding alleging the violation of any applicable Environmental Laws, except to the extent that any such proceeding would not reasonably be expected to have a Material Adverse Effect
with respect to such Borrower; (c) are not subject to any federal, state, local or foreign review, audit or investigation which would reasonably be expected to lead to a proceeding referred to in (b) above that would reasonably be expected
to have a Material Adverse Effect with respect to such Borrower; (d) have no actual knowledge that any of their predecessors in title to any of their property and assets are the subject of any currently pending federal, state, local or foreign
review, audit or investigation which would reasonably be expected to lead to a proceeding referred to in (b) above that would reasonably be expected to have a Material Adverse Effect with respect to such Borrower; and (e) possess, and are
in compliance with, or have applied for, all approvals, licenses, permits, consents and other authorizations which are necessary under any applicable Environmental Laws to conduct their business, except to the extent that the failure to possess, or
be in compliance with, any of the foregoing would not reasonably be expected to have a Material Adverse Effect with respect to such Borrower. 

Section 3.07 Disclosure. As of the Effective Date only, neither the Information Memorandum nor any of the other reports, financial
statements, certificates or other written information furnished by or on behalf of such Borrower (including, in the case of WPZ, by or on behalf of Pre-Merger WPZ) in connection with the Transactions to the Administrative Agent or any Lender on or
prior to the Effective Date (as modified or supplemented by other information so furnished on or prior to the Effective Date), taken as a whole, contains any material misstatement of fact or omits to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were made, not materially misleading, provided that, with respect to any projected financial information, such Borrower represents only that such information was prepared
in good faith based upon assumptions believed by such Borrower to be reasonable at the time (it being recognized, however, that projections as to future events are not to be viewed as facts and that the actual results during the period or periods
covered by any projections may materially differ from the projected results). 
 Section 3.08 Solvency. As of the Effective Date
and on the date of any increase in the Aggregate Commitments pursuant to Section 2.01(c) only, after giving effect to the Transactions (including each Loan and each Letter of Credit) to be consummated on such date, such Borrower,
individually and together with its Subsidiaries, is Solvent. 

  
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 Section 3.09 ERISA. No ERISA Event has occurred or is reasonably expected to occur
that, when taken together with all other such ERISA Events for which liability is reasonably expected to occur, would reasonably be expected to result in a Material Adverse Effect in respect of such Borrower. 

Section 3.10 Investment Company Status. No Borrower is an “investment company” as defined in, or subject to regulation
under, the Investment Company Act of 1940. 
 Section 3.11 Margin Securities. No Borrower is engaged principally, or as one of
its important activities, in the business of extending credit for the purpose of purchasing or carrying margin stock (within the meaning of Regulations U or X of the Board of Governors of the Federal Reserve System of the United States of America),
and no part of the proceeds of any Loan will be used to purchase or carry any margin stock in violation of said Regulations U or X or to extend credit to others for the purpose of purchasing or carrying margin stock in violation of said Regulations
U or X. 
 Section 3.12 Sanctions; Anti-Corruption; Money Laundering and Counter-Terrorist Financing Laws 

(a) None of the Borrowers or any of their Subsidiaries, nor, to the knowledge of the Borrowers, any director, officer, employee or Affiliate
of any Borrower or any of their Subsidiaries is the subject of any sanctions administered or enforced by the U.S. Department of the Treasury’s Office of Foreign Assets Control or the U.S. State Department, the United Nations Security Council,
the European Union, Her Majesty’s Treasury, or other relevant sanctions authority (collectively, “Sanctions”); none of the Borrowers or any of their Subsidiaries is located, organized or resident in a country or territory that
is, or whose government is, the subject of Sanctions. 
 (b) Neither any Letter of Credit nor any part of the proceeds of the Loans will be
used, directly or, to the knowledge of any Borrower, indirectly, (i) to fund or finance any activities or business of or with any Person or vessel, or in any country or territory, that, at the time of such funding or financing, is, or whose
government is, the subject of Sanctions if such activities or business would be prohibited for a U.S. Person pursuant to Sanctions, or (ii) in any other manner that would result in a violation of Sanctions by any Borrower or any Subsidiary or
any other party to this Agreement. 
 (c) Each Borrower and its Subsidiaries are in compliance with all applicable anti-corruption laws,
including the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder (the “FCPA”), except for such non-compliance that could not, based upon the facts and circumstances existing at the time,
reasonably be expected to (x) result in a Material Adverse Effect or (y) result in material liability to any Lender Party or the Administrative Agent. Williams has instituted and maintains policies and procedures reasonably designed to
promote compliance by each Borrower with the FCPA and all other applicable anti-corruption laws, and each Borrower adheres to such policies and procedures. Neither any Letter 

  
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of Credit nor any part of the proceeds of the Loans will be used, directly or, to the knowledge of any Borrower, indirectly, in violation of the FCPA or any other applicable anti-corruption law,
including for any payments to any governmental official or employee, political party, official of a political party, candidate for political office, or anyone else acting in an official capacity, in order to obtain, retain or direct business or
obtain any improper advantage, in violation of the FCPA or any other applicable anticorruption law. 
 (d) To the extent applicable, each
Borrowers and its Subsidiaries are in compliance with the Bank Secrecy Act, as amended by Title III of the USA PATRIOT Act, and all other applicable anti-money laundering and counter-terrorist financing laws and regulations, except for such
non-compliance that could not, based on the facts and circumstances existing at the time, reasonably be expected to (x) result in a Material Adverse Effect or (y) result in material liability to any Lender Party or the Administrative
Agent. 
 ARTICLE IV 

CONDITIONS 

Section 4.01 Effective Date. The obligations of the Lenders to make Loans and of the Issuing Banks to issue Letters of Credit
hereunder shall not become effective until the Effective Date which is scheduled to occur when each of the following conditions is satisfied: 

(a) The Administrative Agent (or its counsel) shall have received from each party hereto either (i) a counterpart of this Agreement
signed on behalf of such party or (ii) written evidence satisfactory to the Administrative Agent (which may include fax or email pdf transmission of a signed signature page of this Agreement) that such party has signed a counterpart of this
Agreement. 
 (b) The Administrative Agent shall have received written opinions (addressed to the Administrative Agent and the Lenders and
dated the Effective Date) of Craig L. Rainey, Esq., General Counsel of the Borrowers, and Gibson, Dunn & Crutcher LLP, counsel for the Borrowers, in form and substance reasonably satisfactory to the Administrative Agent and its counsel.

 (c) The Administrative Agent shall have received such documents and certificates as the Administrative Agent or its counsel may
reasonably request relating to (i) the organization and existence of the Borrowers, and (ii) the authorization of the Transactions and any other legal matters relating to the Borrowers, this Agreement or the Transactions, all in form and
substance reasonably satisfactory to the Administrative Agent and its counsel. 
 (d) The Administrative Agent shall have received each
promissory note requested by a Lender pursuant to Section 2.10(e), each duly completed and executed by each Borrower. 
 (e) The
Administrative Agent shall have received a certificate, dated the Effective Date and signed by the President, an Executive Vice President or a Financial Officer or a Responsible Officer of each Borrower, confirming compliance with the conditions set
forth in paragraphs (h) and (i) of this Section 4.01. 

  
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 (f) The Administrative Agent shall have received (i) all fees and other amounts due and
payable pursuant to the Fee Letters on or prior to the Effective Date and (ii) to the extent invoiced two (2) Business Days prior to closing, reimbursement or payment of all out-of-pocket expenses required to be reimbursed or paid by the
Borrowers hereunder (or shall have received satisfactory evidence that all such fees and amounts are being paid substantially simultaneously). 

(g) As of the Effective Date only, since December 31, 2013, no event resulting in a Material Adverse Effect has occurred and is
continuing. 
 (h) No Default or Event of Default has occurred and is continuing. 

(i) The representations and warranties of each Borrower set forth in this Agreement shall be true and correct in all material respects (other
than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as written, including the materiality qualifier) on and as of the
Closing Date (other than those representations and warranties that expressly relate to a specific earlier date, which shall be true and correct in all material respects as of such earlier date (other than those representations and warranties that
are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as of such earlier date as written, including the materiality qualifier)). 

(j) The ACMP Merger and the merger of Pre-Merger WPZ with and into WPZ shall each have been consummated. 

(k) The Administrative Agent shall have received, each in form reasonably satisfactory to the Lenders, pro forma consolidated financial
statements for the period ending September 30, 2014 of WPZ and its subsidiaries giving effect to the ACMP Merger and the other Transactions to be effected on the Closing Date. It is agreed that the condition in this clause (k) will be
satisfied by the pro forma consolidated financial statements contained in the registration statement on Form S-4 of WPZ, or any amendments thereof filed subsequent thereto but prior to the Closing Date. 

(l) The Administrative Agent shall have received evidence reasonably satisfactory to it that the Existing ACMP Credit Agreement has been
terminated (or will be terminated on the Closing Date), all obligations thereunder have been satisfied in full (other than any Letters of Credit listed on Schedule 2.06 hereto and any contingent expense reimbursement, indemnification and
similar obligations that survive repayment in full of the obligations under the Existing ACMP Credit Agreement), and arrangements have been made for the substantially concurrent release of all liens thereunder. 

(m) The Administrative Agent shall have received evidence reasonably satisfactory to it that each of the subsidiary guarantees of WPZ’s
outstanding senior notes have been terminated (or shall be terminated on the Closing Date). 
 The date on which all of the foregoing conditions have been
satisfied (or waived by the Administrative Agent) shall be the “Effective Date”. The Administrative Agent shall notify the Borrowers and the Lenders of the Effective Date, and such notice shall be conclusive and binding. 

  
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 Section 4.02 Each Credit Event. The obligation of each Lender to make a Loan on the
occasion of any Borrowing (exclusive of continuations and conversions of a Borrowing and except as set forth in Section 2.05(d) with respect to Loans to be made by the Revolving Lenders for the purpose of repaying the Swing Line Loans),
and of any Issuing Bank to issue or increase the amount of any Letter of Credit, is subject to the satisfaction of the following conditions: 

(a) The representations and warranties of the Borrower requesting the Loan set forth in this Agreement shall be true and correct in all
material respects (other than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as written, including the materiality
qualifier) on and as of the date of such Borrowing or the date of issuance or increase of such Letter of Credit, as applicable (other than those representations and warranties that expressly relate to a specific earlier date, which shall be true and
correct in all material respects as of such earlier date (other than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as of
such earlier date as written, including the materiality qualifier)). 
 (b) At the time of and immediately after giving effect to such
Borrowing or the issuance or increase of such Letter of Credit, as applicable, no Default with respect to such Borrower shall have occurred and be continuing. 

Each Borrowing, each Swing Line Borrowing Notice and each issuance or increase of a Letter of Credit shall be deemed to constitute a representation and
warranty by the Borrower making such Borrowing on the date thereof as to the matters specified in paragraphs (a) and (b) of this Section. 

Section 4.03 Defaulting Lenders. In addition to the other conditions precedent herein set forth, if any Lender becomes, and during
the period it remains, a Defaulting Lender, no Issuing Bank will be required to issue any Letter of Credit or to increase any outstanding Letter of Credit, and the Swing Line Lender will not be required to make a Swing Line Loan, unless such Issuing
Bank or the Swing Line Lender, as the case may be, is reasonably satisfied that any exposure that would result therefrom is fully covered or eliminated by any combination, at the option of the applicable Borrower, of the following: 

(a) the LC Exposure and the Swing Line Loan Exposure of such Defaulting Lender is reallocated, as to outstanding and future Letters of Credit
and Swing Line Loans to the Non-Defaulting Lenders as provided in Section 2.06(k); 
 (b) to the extent a reallocation as
provided in Section 2.06(k) is not available or otherwise at the option of the Borrower requesting the Letter of Credit or the Swing Line Loan, without limiting the provisions of Section 2.06(j), each Borrower Cash
Collateralizes the obligations of such Borrower in respect of such Letter of Credit or Swing Line Loan in an amount equal to the aggregate amount of the unreallocated obligations (contingent or otherwise) of such Defaulting Lender in respect of such
Letter of Credit or Swing Line Loan (provided that cash collateral shall be deposited in an interest bearing account promptly after the execution of the appropriate deposit account agreement and establishment of such account from which the
Administrative Agent will release interest to the applicable Borrower on a periodic basis), or 

  
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makes other arrangements satisfactory to the Administrative Agent and the relevant Issuing Bank(s) or the Swing Line Lender in their sole discretion to protect them against the risk of
non-payment by such Defaulting Lender; and 
 (c) in the case of a proposed issuance of a Letter of Credit or making of a Swing Line Loan,
by an instrument or instruments in form and substance satisfactory to the Administrative Agent and to the relevant Issuing Bank(s) or the Swing Line Lender, as the case may be, the Borrowers agree that the face amount of such requested Letter of
Credit or the principal amount of such requested Swing Line Loan will be reduced by an amount equal to the unreallocated, non-Cash Collateralized portion thereof as to which such Defaulting Lender would otherwise be liable, in which case the
obligations of the Non-Defaulting Lenders in respect of such Letter of Credit or Swing Line Loan will, subject to the first proviso below, be on a pro rata basis in accordance with the Commitments of the Non-Defaulting Lenders, and the
pro rata payment provisions of Section 2.18 will be deemed adjusted to reflect this provision; provided that (a) the sum of each Non-Defaulting Lender’s total Credit Exposure may not in any event exceed the
Commitment of such Non-Defaulting Lender, and (b) neither any such reallocation nor any payment by a Non-Defaulting Lender pursuant thereto nor any such Cash Collateralization or reduction will constitute a waiver or release of any claim any
Borrower, the Administrative Agent, any Issuing Bank, the Swing Line Lender or any other Lender may have against such Defaulting Lender, or cause such Defaulting Lender to be a Non-Defaulting Lender. 

ARTICLE V 
 AFFIRMATIVE
COVENANTS 
 From and after the Effective Date and until the Aggregate Commitments have expired or been terminated and the principal of
and interest on each Loan and all fees payable hereunder shall have been paid in full and all Letters of Credit shall have expired or terminated and all LC Disbursements shall have been reimbursed, each Borrower, solely with respect to itself, and
to the extent set forth below, its Subsidiaries, covenants and agrees with the Lenders that: 
 Section 5.01 Financial Statements
and Other Information. Such Borrower will furnish, or cause to be furnished, to the Administrative Agent: 
 (a) (x) as soon as
available, but in any event within 105 days after the end of each fiscal year of such Borrower, the audited consolidated balance sheet of such Borrower and its consolidated subsidiaries for such fiscal year and the related consolidated statements of
income, equity and cash flows of such Borrower and its consolidated subsidiaries for such fiscal year, all in reasonable detail, audited and accompanied by a report and opinion of an independent certified public accountant of nationally recognized
standing selected by such Borrower, which report and opinion shall be prepared in accordance with GAAP, and (y) as soon as available, but in any event within 105 days after the end of Pre-Merger WPZ’s fiscal year ended December 31,
2014, the audited supplemental consolidated balance sheet of WPZ and its consolidated subsidiaries for such fiscal year and the related consolidated statements of income, equity and cash flows of WPZ and its consolidated subsidiaries for such fiscal
year (which shall include a continuation of Pre-Merger WPZ’s historical financial statements, combined with those of WPZ for the periods under common control (periods subsequent to July 1, 2014), reflected at Williams’ historical
basis in both partnerships), all in reasonable detail, audited and accompanied 

  
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by a report and opinion of an independent certified public accountant of nationally recognized standing selected by such Borrower, which report and opinion shall be prepared in accordance with
GAAP; 
 (b) as soon as available, but in any event within 60 days after the end of each of the first three fiscal quarters of each fiscal
year of such Borrower, the unaudited consolidated balance sheet of such Borrower and its consolidated subsidiaries as at the end of such quarter and the related consolidated statements of income, equity and cash flows of such Borrower and its
consolidated subsidiaries for such quarter, all in reasonable detail and certified by a Financial Officer of such Borrower as fairly presenting in all material respects the financial condition, results of operations and cash flows of such Borrower
and its subsidiaries in accordance with GAAP, subject to normal changes resulting from year-end adjustments; 
 (c) within 60 days after the
end of each of the first three fiscal quarters of each fiscal year of such Borrower and within 105 days after the end of each fiscal year of such Borrower, a certificate of a Financial Officer of such Borrower substantially in the form of
Exhibit D (i) certifying as to whether a Default has occurred that is then continuing and, if a Default has occurred that is then continuing, specifying the details thereof and any action taken or proposed to be taken with respect
thereto, and (ii) setting forth in reasonable detail calculations demonstrating compliance with Section 6.07; 
 (d)
promptly upon their becoming available, one copy of (i) each financial statement, report, notice or proxy statement sent by any Borrower to public securities holders generally, and (ii) each regular or periodic report, each registration
statement (without exhibits except as expressly requested by such Lender), and each prospectus and all amendments thereto filed by WPZ or any of its Subsidiaries with the Securities and Exchange Commission, or any Governmental Authority succeeding
to any or all of the functions of said Commission, or with any national securities exchange; and 
 (e) any other information (other than
projections) which the Administrative Agent, at the request of any Lender, may from time to time reasonably request. 
 Any document readily
available on-line through the “Electronic Data Gathering, Analysis and Retrieval” system (or any successor system thereof) maintained by the Securities and Exchange Commission (or any succeeding Governmental Authority), shall be deemed to
have been furnished to the Administrative Agent for purposes of this Section 5.01. Documents required to be delivered pursuant to this Section 5.01 may be delivered electronically and if so delivered, shall be deemed to have
been delivered on the date (i) on which such Borrower posts such documents, or provides a link thereto on such Borrower’s website on the Internet at www.williamslp.com or (ii) on which such documents are (or are deemed to be)
delivered to the Administrative Agent. The Administrative Agent shall post such documents on such Borrower’s behalf on an Internet or intranet website, if any, to which each Lender and the Administrative Agent have access (whether a commercial,
third-party website or whether sponsored by the Administrative Agent). The Administrative Agent shall have no obligation to request the delivery or to maintain copies of the documents referred to above, and in any event shall have no responsibility
to monitor compliance by such Borrower with any such request for delivery. 

  
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 Section 5.02 Notices of Material Events. Such Borrower will furnish to the
Administrative Agent and each Lender prompt written notice of the following: 
 (a) the occurrence of any Event of Default; 

(b) as soon as possible and in any event within 30 Business Days after such Borrower or any of its Subsidiaries or ERISA Affiliate of such
Borrower knows or has reason to know that any ERISA Event with respect to any Plan of such Borrower has occurred or is reasonably expected to occur that could reasonably be expected to have a Material Adverse Effect in respect of such Borrower; 

(c) promptly and in any event within 25 Business Days after receipt thereof by such Borrower or any ERISA Affiliate of such Borrower, copies
of each notice received by such Borrower or any ERISA Affiliate of such Borrower from the PBGC stating its intention to terminate any Plan or to have a trustee appointed to administer any Plan; 

(d) promptly and in any event within 25 Business Days after receipt thereof by such Borrower or any ERISA Affiliate of such Borrower from the
sponsor of a Multiemployer Plan, a copy of each notice received by such Borrower or any ERISA Affiliate of such Borrower concerning (i) the imposition of a Withdrawal Liability by a Multiemployer Plan, (ii) the determination that a
Multiemployer Plan is, or is expected to be, in reorganization within the meaning of Title IV of ERISA, (iii) the termination of a Multiemployer Plan within the meaning of Title IV of ERISA, or (iv) the amount of liability incurred, or
expected to be incurred, by such Borrower or any ERISA Affiliate of such Borrower in connection with any event described in clause (i), (ii) or (iii) above that, in the aggregate, would reasonably be expected to have a Material Adverse
Effect in respect of such Borrower; and 
 (e) the occurrence of any “Event of Default” (as defined in the indenture with respect
thereto) with respect to the Senior Notes; and 
 (f) any change in any rating established or deemed to have been established by
Moody’s or S&P for the Index Debt of such Borrower. 
 Each notice delivered under clauses (a) through (e) of this Section shall be
accompanied by a statement of a Responsible Officer setting forth the details of the event or development requiring such notice and any action taken or proposed to be taken with respect thereto. 

Section 5.03 Existence; Conduct of Business. Such Borrower will, and will cause each of its Material Subsidiaries to, do or cause
to be done all things necessary to preserve, renew and keep in full force and effect its legal existence and the rights, licenses, permits, privileges and franchises material and necessary or desirable to the conduct of its business, except where
failure to do so could not be reasonably expected to have a Material Adverse Effect with respect to such Borrower except (i) in the case of any Material Subsidiary of such Borrower (other than another Borrower), where the failure of such
Material Subsidiary to so maintain its existence could not reasonably be expected to have a Material Adverse Effect in respect of such Borrower, (ii) where the failure to preserve and maintain such rights and franchises (other than existence)
or to so qualify and remain qualified could not reasonably be expected to have a Material Adverse Effect in respect of such Borrower, and (iii) the foregoing shall not prohibit any merger, consolidation, liquidation or dissolution not
prohibited under Section 6.02. 

  
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 Section 5.04 Payment of Obligations. Such Borrower will, and will cause each of its
Material Subsidiaries to, pay, before the same shall become delinquent or in default, its Indebtedness and Tax liabilities but excluding Indebtedness that is not Material Indebtedness, except where (a)(i) the validity or amount thereof is being
contested by such Borrower or such Subsidiary in good faith by appropriate proceedings, and (ii) such Borrower or such Subsidiary has set aside on its books adequate reserves with respect thereto in accordance with GAAP, or (b) the failure
to make payment would not reasonably be expected to have a Material Adverse Effect with respect to such Borrower. 
 Section 5.05
Maintenance of Properties; Insurance. Such Borrower will, and will cause each of its Material Subsidiaries to, (a) keep and maintain all property, taken as a whole, material to the conduct of their business in good working order and
condition, ordinary wear and tear excepted, in the reasonable judgment of such Borrower or Material Subsidiary, and (b) maintain, with financially sound and reputable insurance companies, insurance in such amounts and against such risks as are
customarily maintained by companies engaged in the same or similar businesses operating in the same or similar locations; provided that (i) such Borrower or Material Subsidiary may self-insure to the extent and in the manner normal for
companies of like size, type and financial condition and (ii) any insurance required by this Section 5.05(b) may be maintained by Williams or WPZ on behalf of such Borrower or Material Subsidiary. 

Section 5.06 Books and Records; Inspection Rights. Such Borrower will, and will cause each of its Material Subsidiaries to, keep
in accordance with GAAP books of record and account. Such Borrower will, and will cause each of its Material Subsidiaries to, permit any representatives designated by the Administrative Agent or the Required Lenders, upon reasonable prior notice
during normal business hours and, if such Borrower shall so request, in the presence of a Responsible Officer or an appointee of a Responsible Officer, at the Lenders’ expense so long as no Event of Default exists and at such Borrower’s
expense during the continuance of an Event of Default, to visit and inspect its properties, to examine and make extracts from its books and records (subject to compliance with confidentiality agreements and applicable copyright law), and to discuss
its affairs, finances and condition with its officers, all at such reasonable times and as often as reasonably requested but no more frequently than once a year so long as no Event of Default exists. 

Section 5.07 Compliance with Laws. Such Borrower will, and will cause each of its Material Subsidiaries to, comply with all laws,
rules, regulations and orders of any Governmental Authority applicable to it or its property, including, without limitation, Environmental Laws, except where the failure to do so, individually or in the aggregate, would not reasonably be expected to
result in a Material Adverse Effect with respect to such Borrower. 
 Section 5.08 Use of Proceeds and Letters of Credit. The
proceeds of the Loans will be used (i) to refinance the outstanding Indebtedness of the Borrowers under the Existing Credit Agreement on the Closing Date and (ii) for working capital, acquisitions, capital expenditures and other general
limited liability company or partnership, as applicable, purposes and the refinancing of the Existing Credit Agreement. Letters of Credit will be used for such Borrower’s and their 

  
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respective Subsidiaries’ general limited liability company or partnership, as applicable, purposes. No part of the proceeds of any Loan will be used, whether directly or indirectly, for any
purpose that entails a violation of any of the Regulations of the Board of Governors of the Federal Reserve System of the United States of America, including Regulations U and X. 

Section 5.09 Potential Subsidiary Guarantors. 

(a) If, after the date of this Agreement, any Subsidiary of WPZ that is not already a Guarantor guarantees any Material Indebtedness of WPZ,
then that Subsidiary shall become a Guarantor of the obligations of WPZ hereunder by executing a Guaranty and delivering it to the Administrative Agent within twenty Business Days of the date on which it guaranteed such Material Indebtedness,
together with such other additional closing documents, certificates and legal opinions as shall reasonably be requested by the Administrative Agent. 

(b) The Guaranty of a Guarantor shall be released (i) in connection with any sale or other disposition of all or substantially all of the
properties or assets of such Guarantor (including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) a Guarantor, (ii) in connection with any sale or other disposition of all of
the Capital Stock of such Guarantor to a Person that is not (either before or after giving effect to such transaction) a Guarantor, (iii) upon termination of this Agreement or (iv) at such time as such Guarantor ceases to guaranty such
Material Indebtedness. 
 Section 5.10 Maintenance of Ownership of Certain Subsidiaries. At all times, WPZ will (a) Control
NWP and TGPL and (b) maintain NWP and TGPL as Subsidiaries of WPZ, except that WPZ may cease to have Control over, and/or cease to maintain NWP and TGPL as its Subsidiaries, if after giving effect to either NWP or TGPL not being Subsidiaries of
WPZ or WPZ ceasing to have Control over either NWP or TGPL, as applicable, the senior unsecured debt securities of WPZ shall have an Investment Grade Rating from each of Moody’s and S&P. 

ARTICLE VI 
 NEGATIVE
COVENANTS 
 From and after the Effective Date and until the Aggregate Commitments have expired or terminated and the principal of and
interest on each Loan and all fees payable hereunder have been paid in full and all Letters of Credit have expired or terminated and all LC Disbursements shall have been reimbursed, each Borrower, solely with respect to itself, and to the extent set
forth below, its Subsidiaries, covenants and agrees with the Lenders that: 
 Section 6.01 Liens. Such Borrower shall not, and
shall not permit any of its Material Subsidiaries to, create, assume or incur any Lien on any of its assets or property or upon any Equity Interests of any such Material Subsidiary which Equity Interests are now owned or hereafter acquired by such
Borrower or such Subsidiary to secure any Indebtedness of such Borrower or any other Person (other than the Indebtedness under this Agreement) other than Permitted Liens, without providing that the Loans of such Borrower shall be equally and ratably
secured with such Indebtedness until such time as such Indebtedness is no longer secured by a Lien. Notwithstanding the foregoing, each Borrower may, and may permit any of its Material Subsidiaries to, create, assume or incur any Indebtedness
secured by a Lien, other than a Permitted 

  
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Lien, without securing the Loans of such Borrower, provided that the aggregate principal amount of all Indebtedness then outstanding secured by Liens (other than Permitted Liens) does not
exceed 15% of Consolidated Net Tangible Assets. 
 Section 6.02 Fundamental Changes. Such Borrower will not merge into or
consolidate with any other Person, or permit any other Person to merge into or consolidate with it, or sell, transfer, lease or otherwise dispose of, directly or indirectly, (in one transaction or in a series of transactions) all or substantially
all of its assets (whether now owned or hereafter acquired), or liquidate or dissolve, except that, if at the time thereof and immediately after giving effect thereto no Default shall have occurred and be continuing, (a) any Person may merge
into a Borrower in a transaction in which such Borrower is the surviving Person, (b) NWP or TGPL may merge or consolidate with or into WPZ or any Subsidiary of WPZ or transfer all or substantially all of its assets to WPZ or any Subsidiary of
WPZ in a transaction or series of transactions in which WPZ or such Subsidiary of WPZ is the surviving Person and (c) WPZ may, in one or more substantially concurrent related transactions, merge, combine or consolidate with or into another
Person if the survivor of such transactions is a master limited partnership (an “MLP Combination”) in which WPZ is not the surviving Person if (i) (x) the Index Debt of the survivor of such MLP Combination is rated by each
Rating Agency that had in effect a rating for the Index Debt of WPZ at the time of the initial public announcement of such MLP Combination, and (y) each such rating of the Index Debt of the survivor of such MLP Combination established by
Moody’s or S&P upon giving effect to such MLP Combination shall be not lower than the rating by Moody’s or S&P, respectively, applicable to the Index Debt of WPZ immediately before the initial public announcement of such merger or
consolidation and (ii) immediately after giving effect to such MLP Combination and each other transaction related thereto, Williams shall be the Beneficial Owner, directly or indirectly, of 100% of the Voting Stock of the General Partner. 

Section 6.03 Restricted Payments. Such Borrower will not, and will not permit any of its Subsidiaries to, declare or make, or
agree to pay or make, directly or indirectly, any Restricted Payment, except as long as no Event of Default has occurred and is continuing or would result therefrom, (a) WPZ may make Restricted Payments of Available Cash (as defined in the
Partnership Agreement) with respect to any Quarter (as defined in the Partnership Agreement), (b) each of NWP and TGPL and their respective Subsidiaries may make Restricted Payments to WPZ and its Subsidiaries, (c) WPZ and its Subsidiaries
may make payments or other distributions to officers, directors or employees with respect to the exercise by any such Persons of options, warrants or other rights to acquire Equity Interests in WPZ or such Subsidiary issued pursuant to an
employment, equity award, equity option or equity appreciation agreement or plans entered into by WPZ or such Subsidiary in the ordinary course of business, (d) WPZ may reimburse the General Partner for expenses pursuant to the Partnership
Agreement, (e) TGPL and NWP and their Subsidiaries may distribute cash to WPZ in connection with their participation in WPZ’s cash management program and (f) any Person may be permitted to make any Restricted Payment required to
effectuate a MLP Combination; provided, that even if an Event of Default shall have occurred and is continuing, (i) each of NWP and TGPL and their respective Subsidiaries may make Restricted Payments to WPZ and its Subsidiaries so long
as, with respect to any such Borrower or its respective Subsidiaries, there is no Credit Exposure of any Lender with respect to such Borrower, and (ii) no Subsidiary of any Borrower shall be prohibited from upstreaming dividends or other
payments to such Borrower or any Subsidiary of such Borrower or making, in 

  
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the case of any Subsidiary of such Borrower that is not wholly-owned (directly or indirectly) by such Borrower, dividends or payments, as the case may be, to the other owners of Equity Interests
in such Subsidiary; and provided, further, that, any dividends or payments by any such Subsidiary that is not wholly-owned (directly or indirectly) by a Borrower to such Borrower shall be not less than an amount equal to (x) WPZ’s
direct or indirect percentage ownership of Equity Interests in such Subsidiary times (y) the amount of all such dividends and payments made to all owners of Equity Interests in such Subsidiary. 

Section 6.04 Restrictive Agreements. Such Borrower will not, and will not permit any of its Material Subsidiaries to, directly or
indirectly, enter into or permit to exist any agreement or other arrangement with any Person, other than the Lenders pursuant hereto, which expressly prohibits or restricts or imposes any conditions upon the ability of any Material Subsidiary of
such Borrower to (a) pay dividends or make other distributions or pay any Indebtedness owed to WPZ or any Material Subsidiary of WPZ, or (b) make subordinate loans or advances to or make other investments in WPZ or any Material Subsidiary
of WPZ in each case, other than restrictions or conditions contained in, or existing by reasons of, any agreement or instrument (i) relating to any Indebtedness or volumetric production payment arrangements of any Subsidiary of WPZ,
(ii) relating to property existing at the time of the acquisition thereof, so long as the restriction or condition relates only to the property so acquired, (iii) relating to (x) any Subsidiary of WPZ at the time such Subsidiary was
merged or consolidated with or into, or acquired by, WPZ or a Subsidiary of WPZ or became a Subsidiary of WPZ and not created in contemplation thereof or (y) any Person at the time such Person merges, combines or otherwise consolidates with WPZ
in connection with a MLP Combination and not created in contemplation thereof, (iv) effecting a renewal, extension, refinancing, refund or replacement (or successive extensions, renewals, refinancings, refunds or replacements) of Indebtedness
issued under an agreement referred to in clauses (i) through (iii) above, so long as the restrictions and conditions contained in any such renewal, extension, refinancing, refund or replacement agreement, taken as a whole, are not
materially more restrictive than the restrictions and conditions contained in the original agreement, as determined in good faith by the board of directors of the General Partner, (v) constituting customary provisions restricting subletting or
assignment of any leases of WPZ or any Subsidiary of WPZ or provisions in agreements that restrict the assignment of such agreement or any rights thereunder, (vi) related to Permitted Liens, (vii) constituting any temporary encumbrance or
restriction with respect to a Subsidiary of WPZ under an agreement that has been entered into for the disposition of all or substantially all of the outstanding Equity Interests of or assets of such Subsidiary, provided that such disposition
is otherwise permitted hereunder, (viii) constituting customary restrictions on cash, other deposits or assets imposed by customers and other persons under contracts entered into in the ordinary course of business, (ix) constituting
provisions contained in agreements or instruments relating to Indebtedness that prohibit the transfer of all or substantially all of the assets of the obligor under that agreement or instrument unless the transferee assumes the obligations of the
obligor under such agreement or instrument or such assets may be transferred subject to such prohibition, (x) constituting a requirement that a certain amount of Indebtedness be maintained between a Subsidiary of WPZ and WPZ or another
Subsidiary of WPZ, (xi) constituting any restriction or condition with respect to property under an agreement that has been entered into for the disposition of such property, provided that such disposition is otherwise permitted
hereunder, (xii) constituting any restriction or condition with respect to property under a charter, lease or other agreement that has been entered into for the employment of such property, (xiii) constituting a Hybrid Security or an
indenture, document, 

  
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agreement or security entered into or issued in connection with a Hybrid Security or otherwise constituting a restriction or condition on the payment of dividends or distributions by an issuer of
a Hybrid Security; (xiv) entered into in the ordinary course of business; (xv) existing under or by reason of applicable law; (xvi) relating to a joint venture or similar arrangement, so long as the restriction or condition relates
only to the property that is subject to such joint venture or similar arrangement; (xvii) existing on the Closing Date and set forth in Schedule 6.04; (xviii) relating to financial performance covenants or (xix) arising from
the Partnership Agreement or the limited liability company agreement with respect to Discovery. 
 Section 6.05 Affiliate
Transactions. Such Borrower will not, and will not permit any of its Material Subsidiaries to, directly or indirectly, pay any funds to or for the account of, make any investment in, lease, sell, transfer or otherwise dispose of any assets,
tangible or intangible, to, or participate in, or effect, any transaction with, any officer, director, employee or Affiliate (other than such Borrower or any of its Subsidiaries) unless as a whole such transactions between such Borrower and its
Subsidiaries on the one hand and any officer, director, employee or Affiliate (other than such Borrower or any of its Subsidiaries) on the other hand, are on terms and conditions fair and reasonable to such Borrower or such Material Subsidiary as
determined, in the case of WPZ, by the General Partner, and in the case of NWP and TGPL, by such Borrower; provided, that the foregoing provisions of this Section shall not prohibit (a) such Borrower or any of its
Subsidiaries from declaring or paying any lawful dividend or distribution otherwise permitted hereunder, (b) such Borrower or any of its Subsidiaries from providing credit support for its Subsidiaries as it deems appropriate in the ordinary
course of business, (c) WPZ or any of its Subsidiaries from engaging in a transaction or transactions that occur within a related series of transactions, which, in the aggregate, are on terms and conditions that are fair and reasonable as
determined, in the case of WPZ, by the General Partner, and in the case of NWP and TGPL, by such Borrower, (d) such Borrower or any of its Subsidiaries from engaging in non-material transactions with any officer, director, employee or Affiliate
of such Borrower or any of its Subsidiaries that are not on an arms-length basis or are not on terms as favorable as could have been obtained from a third party but are in the ordinary course of such
Borrower’s or such Subsidiary’s business, so long as, in each case, after giving effect thereto, no Default or Event of Default shall have occurred and be continuing, (e) WPZ or any of its Subsidiaries from engaging in a transaction
with an Affiliate if such transaction has been approved by the General Partner’s Board of Directors, (f) any arrangement in place on the Closing Date or any amendment thereto or replacement thereof or any transaction contemplated thereby
so long as such amendment or replacement is not more disadvantageous in any material respect than the arrangement so amended or replaced; (g) any transaction permitted under the Partnership Agreement; (h) any corporate sharing agreements
with respect to Tax sharing and general overhead and administrative matters; (i) any direct or indirect transfer of Equity Interests to WPZ or any of its Subsidiaries in one or a series of transactions or (j) WPZ’s and its
Subsidiaries’ participation in WPZ’s cash management program. 
 Section 6.06 Change in Nature of Businesses. Neither
such Borrower nor any Material Subsidiary of such Borrower will materially alter the character of their business from the midstream energy business, pipeline business and wetlands mitigation business and those lines of business conducted by WPZ and
its Subsidiaries on the Closing Date (or which are directly related thereto or generally related thereto), except that WPZ and its Subsidiaries may engage in the businesses of producing, gathering, processing, storing, transporting and distributing
natural gas, natural gas liquids, refined products and crude oil and similar businesses. 

  
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 Section 6.07 Financial Condition Covenants. 

(a) Leverage Ratio. WPZ shall not permit the ratio of Consolidated Indebtedness of WPZ as of the last day of any fiscal quarter for
which financial statements have been delivered pursuant to Section 5.01 to Consolidated EBITDA of WPZ for the four full fiscal quarters ending on such date to exceed: 

(i) 5.50 to 1.0, in the case of any such period ended on the last day of (A) a fiscal quarter in which any Borrower or any
consolidated Subsidiary of WPZ makes any Specified Acquisition, or (B) the first or second fiscal quarter next succeeding such a fiscal quarter; or 

(ii) 5.00 to 1.00, in the case of any such period ended on the last day of any other fiscal quarter. 

For purposes of this Section 6.07(a): (A) Hybrid Securities up to an aggregate amount of 15% of Consolidated Total Capitalization shall be
excluded from Consolidated Indebtedness of WPZ, (B) Consolidated EBITDA of WPZ may include, at WPZ’s option, any Material Project EBITDA Adjustments as provided in the definition thereof and (C) once any Acquisition Adjustment Period
is in effect, the next succeeding Acquisition Adjustment Period may not commence until the termination of such Acquisition Adjustment Period then in effect. 

(b) Ratio of Consolidated Indebtedness to Capitalization. In the case of any Borrower (other than WPZ), such Borrower shall not permit
its ratio of (i) Consolidated Indebtedness of such Borrower as of the last day of any fiscal quarter for which financial statements have been delivered pursuant to Section 5.01 to (ii) the Consolidated Total Capitalization of
such Borrower as of such date to exceed 0.65:1.00. 
 ARTICLE VII 

EVENTS OF DEFAULT 
 If any
of the following events (“Events of Default”) shall occur and be continuing: 
 (a) such Borrower shall fail to pay any
principal of any Loan or any reimbursement obligation in respect of any LC Disbursement when and as the same shall become due and payable, whether at the due date thereof or at a date fixed for prepayment thereof or otherwise; 

(b) such Borrower shall fail to pay (i) any interest on any Loan payable under this Agreement, when and as the same shall become due and
payable, and such failure shall continue unremedied for a period of five (5) days or (ii) any fee or any other amount (other than an amount referred to in clause (a) or (b)(i) of this Article) payable under this Agreement, when and as
the same shall become due and payable, and such failure shall continue unremedied for a period of ten (10) days; 

  
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 (c) any representation or warranty (other than Added L/C Representations) made by such Borrower
herein or in any other Loan Document (or by any Responsible Officer of such Borrower) in writing under or in connection with this Agreement or any other Loan Document or any instrument executed in connection herewith (including representations and
warranties deemed made pursuant to Section 4.02) shall prove to have been incorrect in any material respect when made or deemed made and such materiality is continuing; 

(d) such Borrower shall fail to observe or perform any covenant, condition or agreement contained in Article VI; 

(e) such Borrower shall fail to observe or perform any covenant, condition or agreement contained in this Agreement (other than those
specified in clause (a), (b) or (d) of this Article), and such failure shall continue unremedied for a period of 30 days after the earlier of (i) written notice thereof from the Administrative Agent to such Borrower (which notice
will be given at the request of the Required Lenders) or (ii) a Responsible Officer of such Borrower shall have knowledge of such failure; 

(f) such Borrower or any Material Subsidiary of such Borrower shall (i) fail to pay (A) any principal of or premium or interest on
any Material Indebtedness of such Borrower or such Material Subsidiary (as the case may be), or (B) aggregate net obligations under one or more Hedging Agreements (excluding amounts the validity of which are being contested in good faith by
appropriate proceedings, if necessary, and for which adequate reserves with respect thereto are maintained on the books of such Borrower or such Material Subsidiary (as the case may be)) in excess of $150,000,000, in each case when the same becomes
due and payable (whether by scheduled maturity, required prepayment, acceleration, demand or otherwise), and such failure shall continue after the applicable grace period, if any, specified in the agreement or instrument relating to such Material
Indebtedness or such Hedging Agreements; or (ii) default in the observance or performance of any covenant or obligation contained in any agreement of such Material Indebtedness that is a default (in each case, other than a failure to pay
specified in clause (i) of this subsection (f)) and such default shall continue after the applicable grace period, if any, specified in such agreement or instrument, if the effect thereof is to accelerate the maturity of such Material
Indebtedness or require such Material Indebtedness to be prepaid prior to the stated maturity thereof; for the avoidance of doubt the parties acknowledge and agree that any payment required to be made under a guaranty of payment or collection
described in clause (g) of the definition of Indebtedness shall be due and payable at the time such payment is due and payable under the terms of such guaranty (taking into account any applicable grace period) and such payment shall be deemed
not to have been accelerated or required to be prepaid prior to its stated maturity as a result of the obligation guaranteed having become due; provided, that this paragraph (f) shall not apply to secured Indebtedness that becomes due as
a result of voluntary sale or transfer of the property or assets securing such Indebtedness; 
 (g) an involuntary proceeding shall be
commenced or an involuntary petition shall be filed seeking (i) liquidation, reorganization or other relief in respect of such Borrower or any Material Subsidiary of such Borrower or its debts, or of a substantial part of its assets, under any
federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for such Borrower or any Material
Subsidiary of such Borrower or for a substantial part of its assets, and, in any such case, such proceeding or petition shall continue undismissed for 60 days or an order or decree approving or ordering any of the foregoing shall be entered;

  
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 (h) such Borrower or any Material Subsidiary of such Borrower shall (i) voluntarily commence
any proceeding or file any petition seeking liquidation, reorganization or other relief under any federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect, (ii) consent to the institution of, or
fail to contest in a timely and appropriate manner, any proceeding or petition described in clause (h) of this Article, (iii) apply for or consent to the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar
official for such Borrower or any Material Subsidiary of such Borrower or for a substantial part of its assets, (iv) make a general assignment for the benefit of creditors or (v) take any action for the purpose of effecting any of the
foregoing; 
 (i) such Borrower or any Material Subsidiary of such Borrower shall admit in writing its inability to pay its debts generally;

 (j) one or more judgments for the payment of money in an aggregate uninsured amount equal to or greater than $150,000,000 shall be
rendered against such Borrower or any Material Subsidiary of such Borrower or any combination thereof and the same shall remain undischarged for a period of 30 consecutive days during which execution shall not be effectively stayed, or any
action shall be legally taken by a judgment creditor to attach or levy upon any assets of such Borrower or any such Material Subsidiary of such Borrower to enforce any such judgment; 

(k) an ERISA Event shall have occurred and, thirty (30) days after notice thereof shall have been given to such Borrower by the
Administrative Agent, such ERISA Event shall still exist, and such ERISA Event, when taken together with all other ERISA Events that have occurred, would reasonably be expected to result in a Material Adverse Effect; 

(l) such Borrower or any Material Subsidiary or ERISA Affiliate of such Borrower shall have been notified by the sponsor of a Multiemployer
Plan that it has incurred Withdrawal Liability to such Multiemployer Plan in an amount which, when aggregated with all other amounts required to be paid to Multiemployer Plans in connection with Withdrawal Liabilities (determined as of the date of
such notification), would reasonably be expected to result in a Material Adverse Effect; 
 (m) such Borrower or any Material Subsidiary or
ERISA Affiliate of such Borrower shall have been notified by the sponsor of a Multiemployer Plan that such Multiemployer Plan is in reorganization or is being terminated, within the meaning of Title IV of ERISA, if as a result of such reorganization
or termination the aggregate annual contributions of the Borrowers and their respective ERISA Affiliates to all Multiemployer Plans which are then in reorganization or being terminated have been or will be increased over the amounts contributed to
such Multiemployer Plans for the respective plan years which include the Closing Date by an amount that would reasonably be expected to result in a Material Adverse Effect; 

(n) the General Partner takes, suffers or permits to exist any of the events or conditions referred to in clauses (g), (h) or (i) of
this Article; 

  
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 (o) a Change in Control shall occur; or 

(p) if any Guaranty of a Material Subsidiary is required to be in effect pursuant to Section 5.09(a) and prior to the release of
such Guaranty pursuant to Section 5.09(b), (i) such Guaranty for any reason is not a legal, valid, binding and enforceable obligation of such Guarantor party thereto for more than five (5) days or (ii) such Guarantor shall
so state in writing that such Guaranty for any reason is not a legal, valid, binding and enforceable obligation of such Guarantor; 
 then, and in every
such event (other than an event with respect to any Borrower described in clause (g) or (h) of this Article), and at any time thereafter during the continuance of such event, the Administrative Agent at the request of the Required Lenders
shall, by notice to the Borrowers or applicable Borrower, take any of the following actions, at the same or different times: (i) terminate the Aggregate Commitments, the commitments of the Swing Line Lender and Letter of Credit
Commitments, and thereupon the Aggregate Commitments, the commitments of the Swing Line Lender, and the Letter of Credit Commitments shall terminate immediately, (ii) declare the Loans owed by the applicable Borrower as to which an Event of
Default has occurred and is continuing to be due and payable in whole (or in part, in which case any principal not so declared to be due and payable may thereafter be declared to be due and payable), and thereupon the principal of the Loans so
declared to be due and payable, together with accrued interest thereon and all fees and other obligations of such Borrower accrued hereunder, shall become due and payable immediately, without presentment, demand, protest or other notice of any kind,
all of which are hereby waived by the Borrowers; and in case of any event with respect to any Borrower described in clause (g) or (h) of this Article, the Borrower Sublimit of the Borrower as to which such Event of Default has occurred and
is outstanding, the obligations of each Lender to make Loans to such Borrower, obligation of the Swing Line Lender to make Swing Line Loans to such Borrower, and of each Issuing Bank to issue a Letter of Credit for or on behalf of such Borrower
shall be automatically terminated and the principal of the Loans of such Borrower then outstanding, together with accrued interest thereon and all fees and other obligations owed by the applicable Borrower as to which such Event of Default has
occurred and is continuing, shall automatically become due and payable, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrowers, and (iii) exercise on behalf of itself, the Lenders, the
Swing Line Lender and the Issuing Banks all rights and remedies available to it, the Lenders, the Swing Line Lender and the Issuing Banks under the Loan Documents, including the rights under Section 2.06(j)(i). 

ARTICLE VIII 
 THE
ADMINISTRATIVE AGENT 
 Section 8.01 Appointment and Authority. Each Lender Party hereby irrevocably appoints Citibank, N.A.
to act on its behalf as the Administrative Agent hereunder and under the other Loan Documents and authorizes the Administrative Agent to take such actions on its behalf and to exercise such powers as are delegated to the Administrative Agent by the
terms hereof or thereof, together with such actions and powers as are reasonably incidental thereto. The provisions of this Article are solely for the benefit of the Administrative Agent and the Lender Parties, and no Borrower or Guarantor shall
have rights as a third party beneficiary of any of such provisions. 

  
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 Section 8.02 Administrative Agent Individually. 

(a) The Person serving as the Administrative Agent hereunder shall have the same rights and powers in its capacity as a Lender Party as any
other Lender Party and may exercise the same as though it were not the Administrative Agent and the term “Lender Party” or “Lender Parties” shall, unless otherwise expressly indicated or unless the context otherwise requires,
include the Person serving as the Administrative Agent hereunder in its individual capacity. Such Person and its Affiliates may accept deposits from, lend money to, act as the financial advisor or in any other advisory capacity for and generally
engage in any kind of business with any Borrower or any Subsidiary or other Affiliate thereof as if such Person were not the Administrative Agent hereunder and without any duty to account therefor to the Lender Parties. 

(b) Each Lender Party understands that the Person serving as Administrative Agent, acting in its individual capacity, and its Affiliates
(collectively, the “Agent’s Group”) are engaged in a wide range of financial services and businesses (including investment management, financing, securities trading, corporate and investment banking and research) (such services
and businesses are collectively referred to in this Article VIII as “Activities”) and may engage in the Activities with or on behalf of one or more of the Borrowers or their respective Affiliates. Furthermore, the
Agent’s Group may, in undertaking the Activities, engage in trading in financial products or undertake other investment businesses for its own account or on behalf of others (including the Borrowers and their Affiliates and including holding,
for its own account or on behalf of others, equity, debt and similar positions in the Borrowers or its respective Affiliates), including trading in or holding long, short or derivative positions in securities, loans or other financial products of
one or more of the Borrowers or their Affiliates. Each Lender Party understands and agrees that in engaging in the Activities, the Agent’s Group may receive or otherwise obtain information concerning the Borrowers or their Affiliates (including
information concerning the ability of the Borrowers to perform its obligations hereunder and under the other Loan Documents) which information may not be available to any of the Lender Parties that are not members of the Agent’s Group. None of
the Administrative Agent nor any member of the Agent’s Group shall have any duty to disclose to any Lender Party or use on behalf of the Lender Parties, and shall not be liable for the failure to so disclose or use, any information whatsoever
about or derived from the Activities or otherwise (including any information concerning the business, prospects, operations, property, financial and other condition or creditworthiness of the Borrowers or any Affiliate thereof) or to account for any
revenue or profits obtained in connection with the Activities, except that the Administrative Agent shall deliver or otherwise make available to each Lender Party such documents as are expressly required by any Loan Document to be transmitted by the
Administrative Agent to the Lender Parties. 
 (c) Each Lender Party further understands that there may be situations where members of the
Agent’s Group or their respective customers (including the Borrowers and their Affiliates) either now have or may in the future have interests or take actions that may conflict with the interests of any one or more of the Lender Parties
(including the interests of the Lender Parties hereunder and under the other Loan Documents). Each Lender Party agrees that no member of the Agent’s Group is or shall be required to restrict its activities as a result of the Person serving as
Administrative Agent being a member of the Agent’s Group, and that each member of the Agent’s Group may undertake any Activities without further consultation with or 

  
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notification to any Lender Party. None of (i) this Agreement nor any other Loan Document, (ii) the receipt by the Agent’s Group of information (including Information) concerning
the Borrowers or their Affiliates (including information concerning the ability of the Borrowers to perform their respective obligations hereunder and under the other Loan Documents) nor (iii) any other matter shall give rise to any fiduciary,
equitable or contractual duties (including without limitation any duty of trust or confidence) owing by the Administrative Agent or any member of the Agent’s Group to any Lender Party including any such duty that would prevent or restrict the
Agent’s Group from acting on behalf of customers (including the Borrowers or their Affiliates) or for its own account. 

Section 8.03 Duties of Administrative Agent; Exculpatory Provisions. 

(a) The Administrative Agent’s duties hereunder and under the other Loan Documents are solely ministerial and administrative in nature
and the Administrative Agent shall not have any duties or obligations except those expressly set forth herein and in the other Loan Documents. Without limiting the generality of the foregoing, the Administrative Agent shall not have any duty to take
any discretionary action or exercise any discretionary powers, but shall be required to act or refrain from acting (and shall be fully protected in so acting or refraining from acting) upon the written direction of the Required Lenders (or such
other number or percentage of the Lenders as shall be expressly provided for herein or in the other Loan Documents), provided that the Administrative Agent shall not be required to take any action that, in its opinion or the opinion of its
counsel, may expose the Administrative Agent or any of its Affiliates to liability or that is contrary to any Loan Document or applicable law, including, for the avoidance of doubt, any action that may be in violation of the automatic stay under the
Bankruptcy Code or other debtor relief law or that may effect a forfeiture, modification or termination of property of a Defaulting Lender in violation of the Bankruptcy Code or other debtor relief law. 

(b) The Administrative Agent shall not be liable for any action taken or not taken by it (i) with the consent or at the request of the
Required Lenders (or such other number or percentage of the Lenders as shall be necessary, or as the Administrative Agent shall believe in good faith shall be necessary, under the circumstances as provided in Section 9.03 or Article
VII) or (ii) in the absence of its own gross negligence or willful misconduct. The Administrative Agent shall be deemed not to have knowledge of any Default or the event or events that give or may give rise to any Default unless and until
any Borrower or any Lender Party shall have given notice to the Administrative Agent describing such Default and such event or events. 

(c) Neither the Administrative Agent nor any member of the Agent’s Group shall be responsible for or have any duty to ascertain or
inquire into (i) any statement, warranty, representation or other information made or supplied in or in connection with this Agreement, any other Loan Document or the Information Memorandum, (ii) the contents of any certificate, report or
other document delivered hereunder or thereunder or in connection herewith or therewith or the adequacy, accuracy and/or completeness of the information contained therein, (iii) the performance or observance of any of the covenants, agreements
or other terms or conditions set forth herein or therein or the occurrence of any Default, (iv) the validity, enforceability, effectiveness or genuineness of this Agreement, any other Loan Document or any other agreement, instrument or document
or (v) the satisfaction of any condition set forth in Article IV or elsewhere herein, other than (but subject to the foregoing clause (ii)) to confirm receipt of items expressly required to be delivered to the Administrative Agent. 

  
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 (d) Nothing in this Agreement or any other Loan Document shall require the Administrative Agent
or any of its Related Parties to carry out any “know your customer” or other checks in relation to any person on behalf of any Lender Party and each Lender Party confirms to the Administrative Agent that it is solely responsible for any
such checks it is required to carry out and that it may not rely on any statement in relation to such checks made by the Administrative Agent or any of its Related Parties. 

Section 8.04 Reliance by Administrative Agent. The Administrative Agent shall be entitled to rely upon, and shall not incur any
liability for relying upon, any notice, request, certificate, consent, statement, instrument, document or other writing (including any electronic message, Internet or intranet website posting or other distribution) believed by it to be genuine and
to have been signed, sent or otherwise authenticated by the proper Person. The Administrative Agent also may rely upon any statement made to it orally or by telephone and believed by it to have been made by the proper Person, and shall not incur any
liability for relying thereon. In determining compliance with any condition hereunder to the making of a Loan, or the issuance of a Letter of Credit, that by its terms must be fulfilled to the satisfaction of a Lender Party, the Administrative Agent
may presume that such condition is satisfactory to such Lender Party unless an officer of the Administrative Agent responsible for the transactions contemplated hereby shall have received notice to the contrary from such Lender Party prior to the
making of such Loan or the issuance of such Letter of Credit, and in the case of a Borrowing, such Lender Party shall not have made available to the Administrative Agent such Lender Party’s ratable portion of such Borrowing. The Administrative
Agent may consult with legal counsel (who may be counsel for any Borrower), independent accountants and other experts selected by it, and shall not be liable for any action taken or not taken by it in accordance with the advice of any such counsel,
accountants or experts. 
 Section 8.05 Delegation of Duties. The Administrative Agent may perform any and all of its duties and
exercise its rights and powers hereunder or under any other Loan Document by or through any one or more sub agents appointed by the Administrative Agent. The Administrative Agent and any such sub agent may perform any and all of its duties and
exercise its rights and powers by or through their respective Related Parties. Each such sub agent and the Related Parties of the Administrative Agent and each such sub agent shall be entitled to the benefits of all provisions of this Article
VIII and Section 9.04 (as though such sub-agents were the “Administrative Agent” under the Loan Documents) as if set forth in full herein with respect thereto. 

Section 8.06 Resignation of Administrative Agent. The Administrative Agent may at any time give notice of its resignation to the
Lender Parties and the Borrowers (such notice not to be effective until 30 days have lapsed). Upon receipt of any such notice of resignation, the Required Lenders shall have the right, unless an Event of Default under subsection (a), (g) or
(h) of Article VII has occurred and is continuing, with the consent of the Borrowers, to appoint a successor. If no such successor shall have been so appointed by the Required Lenders and shall have accepted such appointment within 30
days after the retiring Administrative Agent gives notice of its resignation (such 30-day period, the “Lender Party Appointment Period”), then the 

  
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retiring Administrative Agent may on behalf of the Lender Parties, appoint a successor Administrative Agent meeting the qualifications set forth above. In addition and without any obligation on
the part of the retiring Administrative Agent to appoint, on behalf of the Lender Parties, a successor Administrative Agent, the retiring Administrative Agent may at any time upon or after the end of the Lender Party Appointment Period notify the
Borrowers and the Lender Parties that no qualifying Person has accepted appointment as successor Administrative Agent and the effective date of such retiring Administrative Agent’s resignation which effective date shall be no earlier than three
business days after the date of such notice. Upon the resignation effective date established in such notice and regardless of whether a successor Administrative Agent has been appointed and accepted such appointment, the retiring Administrative
Agent’s resignation shall nonetheless become effective and (i) the retiring Administrative Agent shall be discharged from its duties and obligations as Administrative Agent hereunder and under the other Loan Documents and (ii) all
payments, communications and determinations provided to be made by, to or through the Administrative Agent shall instead be made by or to each Lender Party directly, until such time as the Required Lenders appoint a successor Administrative Agent as
provided for above in this paragraph. Upon the acceptance of a successor’s appointment as Administrative Agent hereunder, such successor shall succeed to and become vested with all of the rights, powers, privileges and duties as Administrative
Agent of the retiring (or retired) Administrative Agent, and the retiring Administrative Agent shall be discharged from all of its duties and obligations as Administrative Agent hereunder or under the other Loan Documents (if not already discharged
therefrom as provided above in this paragraph). The fees payable by WPZ to a successor Administrative Agent shall be the same as those payable to its predecessor unless otherwise agreed between WPZ and such successor. After the retiring
Administrative Agent’s resignation hereunder and under the other Loan Documents, the provisions of this Article and Section 9.04 shall continue in effect for the benefit of such retiring Administrative Agent, its sub agents and
their respective Related Parties in respect of any actions taken or omitted to be taken by any of them while the retiring Administrative Agent was acting as Administrative Agent. Anything herein to the contrary notwithstanding, if at any time the
Required Lenders determine that the Person serving as Administrative Agent is (without taking into account any provision in the definition of “Defaulting Lender” requiring notice from the Administrative Agent or any other party) a
Defaulting Lender, the Required Lenders (determined after giving effect to Section 9.03) may by notice to the Borrowers and such Person remove such Person as Administrative Agent and, in with the consent of the Borrowers, appoint a
replacement Administrative Agent hereunder. Such removal will, to the fullest extent permitted by applicable law, be effective on the earlier of (i) the date a replacement Administrative Agent is appointed and (ii) the date 30 days after
the giving of such notice by the Required Lenders (regardless of whether a replacement Administrative Agent has been appointed). Any resignation by the Administrative Agent pursuant to this Section 8.06 shall, unless otherwise agreed,
also constitute its resignation as Swing Line Lender. 

  
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 Section 8.07 Non-Reliance on Administrative Agent and Other Lender Parties. 

(a) Each Lender Party confirms to the Administrative Agent, each other Lender Party and each of their respective Related Parties that it
(i) possesses (individually or through its Related Parties) such knowledge and experience in financial and business matters that it is capable, without reliance on the Administrative Agent, any other Lender Party or any of their respective
Related Parties, of evaluating the merits and risks (including Tax, legal, regulatory, credit, accounting and other financial matters) of (x) entering into this Agreement, (y) making Loans and other extensions of credit hereunder and under
the other Loan Documents and (z) taking or not taking actions hereunder and thereunder, (ii) is financially able to bear such risks and (iii) has determined that entering into this Agreement and making Loans and other extensions of
credit hereunder and under the other Loan Documents is suitable and appropriate for it. 
 (b) Each Lender Party acknowledges that
(i) it is solely responsible for making its own independent appraisal and investigation of all risks arising under or in connection with this Agreement and the other Loan Documents, (ii) it has, independently and without reliance upon the
Administrative Agent, any other Lender Party or any of their respective Related Parties, made its own appraisal and investigation of all risks associated with, and its own credit analysis and decision to enter into, this Agreement based on such
documents and information as it has deemed appropriate and (iii) it will, independently and without reliance upon the Administrative Agent, any other Lender Party or any of their respective Related Parties, continue to be solely responsible for
making its own appraisal and investigation of all risks arising under or in connection with, and its own credit analysis and decision to take or not take action under, this Agreement and the other Loan Documents based on such documents and
information as it shall from time to time deem appropriate, which may include, in each case: 
 (i) the financial condition,
status and capitalization of the Borrowers; 
 (ii) the legality, validity, effectiveness, adequacy or enforceability of this
Agreement and each other Loan Document and any other agreement, arrangement or document entered into, made or executed in anticipation of, under or in connection with any Loan Document; 

(iii) determining compliance or non-compliance with any condition hereunder to the making of a Loan, or the issuance of a
Letter of Credit and the form and substance of all evidence delivered in connection with establishing the satisfaction of each such condition; 

(iv) the adequacy, accuracy and/or completeness of the Information Memorandum and any other information delivered by the
Administrative Agent, any other Lender Party or by any of their respective Related Parties under or in connection with this Agreement or any other Loan Document, the transactions contemplated hereby and thereby or any other agreement, arrangement or
document entered into, made or executed in anticipation of, under or in connection with any Loan Document. 

  
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 Section 8.08 No Other Duties, etc. Anything herein to the contrary notwithstanding,
none of the Persons acting as Joint Bookrunners, Joint Lead Arrangers or Co-Documentation Agents listed on the cover page hereof shall have any powers, duties or responsibilities under this Agreement or any of the other Loan Documents, except in its
capacity, as applicable, as the Administrative Agent or as a Lender Party hereunder. 
 Section 8.09 Trust Indenture Act. In the
event that Citibank, N.A. or any of its Affiliates shall be or become an indenture trustee under the Trust Indenture Act of 1939 (as amended, the “Trust Indenture Act”) in respect of any securities issued or guaranteed by any
Borrower or any Guarantor, the parties hereto acknowledge and agree that any payment or property received in satisfaction of or in respect of any obligation of such Borrower or such Guarantor hereunder or under any other Loan Document by or on
behalf of Citibank, N.A. in its capacity as the Administrative Agent for the benefit of any Lender under any Loan Document (other than Citibank, N.A. or an Affiliate of Citibank, N.A.) and which is applied in accordance with the Loan Documents shall
be deemed to be exempt from the requirements of Section 311 of the Trust Indenture Act pursuant to Section 311(b)(3) of the Trust Indenture Act. 

Section 8.10 Resignation of an Issuing Bank. If a Lender becomes, and during the period it remains, a Defaulting Lender, and
Commitments have not been fully reallocated pursuant to Section 2.06(k), an Issuing Bank and/or the Swing Line Lender may, upon prior written notice to the Borrowers and the Administrative Agent, resign as an Issuing Bank or as Swing
Line Lender, respectively, effective at the close of business New York time on a date specified in such notice; provided, that such resignation by an Issuing Bank will have no effect on the validity or enforceability of any Letter of Credit
then outstanding or on the obligations of the Borrowers or any Lender under this Agreement with respect to any such outstanding Letter of Credit or otherwise to such Issuing Bank; and provided, further, that such resignation by the Swing Line
Lender will have no effect on its rights in respect of any outstanding Swing Line Loans or on the obligations of the Borrowers or any Lender under this Agreement with respect to any such outstanding Swing Line Loan. 

ARTICLE IX 

MISCELLANEOUS 

Section 9.01 Notices. 

(a) Except in the case of notices and other communications expressly permitted to be given by telephone, all notices, demands, requests,
consents and other communications provided for in this Agreement shall be given in writing, or by any telecommunication device capable of creating a written record (including electronic mail), and addressed to the party to be notified as follows:

 (i) if to WPZ or any other Borrower, to it at Williams Partners L.P., c/o Williams Partners GP LLC, One Williams Center,
Tulsa, Oklahoma 74172-0172, Attention of Treasurer (fax number (918) 573-0871); 
 (ii) if to the Administrative Agent
or the Swing Line Lender, to Citibank, N.A., 2 Penns Way, Suite 200, New Castle, Delaware 19720 (fax number: (302) 894-6120; 

  
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email address: oploanswebadmin@citigroup.com), Attention: Williams Partners L.P. Account Officer, with a copy to Citicorp North America, Inc., 2800 Post Oak Boulevard, Suite 400, Houston, Texas
77056 (fax number: (713) 481-0247), Attention: Williams Partners L.P. Account Officer; 
 (iii) if to any Issuing Bank,
to it at its address (or fax number) set forth in its Administrative Questionnaire; and 
 (iv) if to any other Lender Party,
to it at its address (or fax number) set forth in its Administrative Questionnaire. 
 or at such other address as shall be notified in
writing (x) in the case of any Borrower and the Administrative Agent, to the other parties and (y) in the case of all other parties, to the Borrowers and the Administrative Agent. 

(b) All notices, demands, requests, consents and other communications described in clause (a) shall be effective (i) if delivered by
hand, including any overnight courier service, upon personal delivery, (ii) if delivered by mail, when deposited in the mails, (iii) if delivered by posting to an Approved Electronic Platform, an Internet website or a similar
telecommunication device requiring that a user have prior access to such Approved Electronic Platform, website or other device (to the extent permitted by Section 9.02 to be delivered thereunder), when such notice, demand, request,
consent and other communication shall have been made generally available on such Approved Electronic Platform, Internet website or similar device to the class of Person being notified (regardless of whether any such Person must accomplish, and
whether or not any such Person shall have accomplished, any action prior to obtaining access to such items, including registration, disclosure of contact information, compliance with a standard user agreement or undertaking a duty of
confidentiality) and such Person has been notified in respect of such posting that a communication has been posted to the Approved Electronic Platform and (iv) if delivered by electronic mail or any other telecommunications device, when
transmitted to an electronic mail address (or by another means of electronic delivery) as provided in clause (a); provided, however, that notices and communications to the Administrative Agent pursuant to Article II or Article
VIII shall not be effective until received by the Administrative Agent. 
 (c) Notwithstanding clauses (a) and (b) (unless the
Administrative Agent requests that the provisions of clause (a) and (b) be followed) and any other provision in this Agreement or any other Loan Document providing for the delivery of any Approved Electronic Communication by any other
means, the Borrowers shall deliver all Approved Electronic Communications to the Administrative Agent by properly transmitting such Approved Electronic Communications in an electronic/soft medium in a format acceptable to the Administrative Agent to
oploanswebadmin@citigroup.com or such other electronic mail address (or similar means of electronic delivery) as the Administrative Agent may notify to the Borrowers. Nothing in this clause (c) shall prejudice the right of the Administrative
Agent or any Lender Party to deliver any Approved Electronic Communication to the Borrowers in any manner authorized in this Agreement or to request that the Borrowers effect delivery in such manner. 

  
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 Section 9.02 Posting of Approved Electronic Communications. 

(a) Each of the Lender Parties and the Borrowers agree that the Administrative Agent may, but shall not be obligated to, make the Approved
Electronic Communications available to the Lender Parties by posting such Approved Electronic Communications on Debt Domain or a substantially similar electronic platform chosen by the Administrative Agent to be its electronic transmission system
(the “Approved Electronic Platform”). 
 (b) Although the Approved Electronic Platform and its primary web portal are
secured with generally-applicable security procedures and policies implemented or modified by the Administrative Agent from time to time, each of the Lender Parties and the Borrowers acknowledges and agrees that the distribution of material through
an electronic medium is not necessarily secure and that there are confidentiality and other risks associated with such distribution. In consideration for the convenience and other benefits afforded by such distribution and for the other
consideration provided hereunder, the receipt and sufficiency of which are hereby acknowledged, each of the Lender Parties and the Borrowers hereby approves distribution of the Approved Electronic Communications through the Approved Electronic
Platform and understands and assumes the risks of such distribution. 
 (c) THE APPROVED ELECTRONIC PLATFORM AND THE APPROVED
ELECTRONIC COMMUNICATIONS ARE PROVIDED “AS IS” AND “AS AVAILABLE”. NONE OF THE ADMINISTRATIVE AGENT NOR ANY OTHER MEMBER OF THE AGENT’S GROUP WARRANT THE ACCURACY, ADEQUACY OR COMPLETENESS OF THE APPROVED ELECTRONIC
COMMUNICATIONS OR THE APPROVED ELECTRONIC PLATFORM AND EACH EXPRESSLY DISCLAIMS ANY LIABILITY FOR ERRORS OR OMISSIONS IN THE APPROVED ELECTRONIC COMMUNICATIONS OR THE APPROVED ELECTRONIC PLATFORM. NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
STATUTORY, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT OF THIRD PARTY RIGHTS OR FREEDOM FROM VIRUSES OR OTHER CODE DEFECTS, IS MADE BY THE AGENT PARTIES IN CONNECTION WITH THE
APPROVED ELECTRONIC COMMUNICATIONS OR THE APPROVED ELECTRONIC PLATFORM. 
 (d) Each of the Lender Parties and the Borrowers agree that
the Administrative Agent may, but (except as may be required by applicable law) shall not be obligated to, store the Approved Electronic Communications on the Approved Electronic Platform in accordance with the Administrative Agent’s
generally-applicable document retention procedures and policies. 
 Section 9.03 Waivers; Amendments. 

(a) No failure or delay by the Administrative Agent, any Issuing Bank or any Lender in exercising any right or power hereunder shall operate
as a waiver thereof, nor shall any single or partial exercise of any such right or power, or any abandonment or discontinuance of steps to enforce such a right or power, preclude any other or further exercise thereof or the exercise of any other
right or power. The rights and remedies of the Administrative Agent, the Issuing Banks and the Lenders hereunder are cumulative and are not exclusive of any rights or remedies that they would otherwise have. No waiver of any provision of this
Agreement or consent to any departure by any Borrower therefrom shall in any event be effective unless the same shall be 

  
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permitted by paragraph (b) of this Section, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given. Without limiting the
generality of the foregoing, the making of a Loan or issuance of a Letter of Credit shall not be construed as a waiver of any Default, regardless of whether the Administrative Agent, any Lender or any Issuing Bank may have had notice or knowledge of
such Default at the time. 
 (b) Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an
agreement or agreements in writing entered into by the Borrowers and the Required Lenders or by the Borrowers and the Administrative Agent with the consent of the Required Lenders; provided that no such agreement shall (i) increase or
extend the Commitment of any Lender without the written consent of such Lender (provided that, for the avoidance of doubt, this clause (i) shall not be deemed to be applicable to an increase of a Borrower Sublimit), (ii) reduce the
principal amount of any Loan or LC Disbursement or reduce the rate of interest thereon, or reduce any fees payable hereunder, without the written consent of each Lender affected thereby, (iii) postpone the scheduled date of payment of the
principal amount of any Loan or LC Disbursement, or any interest thereon, or any fees payable hereunder, or reduce the amount of, waive or excuse any such payment, or postpone the scheduled date of expiration of any Commitment, without the written
consent of each Lender affected thereby (and, for the avoidance of doubt, a Declining Lender shall not be affected by an extension of the Maturity Date by Extending Lenders in accordance with Section 2.04), (iv) except as
contemplated in Section 2.04(e), change any provision in a manner that would alter the pro rata sharing of payments required thereby, without the written consent of each Lender, or (v) change any of the provisions of this Section or
the definition of “Required Lenders” or any other provision hereof specifying the number or percentage of Lenders required to waive, amend or modify any rights hereunder or make any determination or grant any consent hereunder, without the
written consent of each Lender; provided further that no such agreement shall amend, modify or otherwise affect the rights or duties of the Administrative Agent, any Issuing Bank, or the Swing Line Lender hereunder without the prior written
consent of the Administrative Agent, such Issuing Bank or the Swing Line Lender, as the case may be. Except as provided herein, during such period as a Lender is a Defaulting Lender, to the fullest extent permitted by applicable law, such Lender
will not be entitled to vote in respect of amendments and waivers hereunder and the Commitment and the outstanding Loans or other extensions of credit of such Lender hereunder will not be taken into account in determining whether the Required
Lenders or all of the Lenders, as required, have approved any such amendment or waiver (and the definition of “Required Lenders” will automatically be deemed modified accordingly for the duration of such period); provided, that any
such amendment or waiver referred to in clauses (i) through (v) or the proviso above or that would alter the terms of this proviso shall require the consent of such Defaulting Lender to the extent such Defaulting Lender is affected
thereby. 
 (c) Notwithstanding the foregoing, the Administrative Agent and WPZ may amend any Loan Document to correct any obvious errors,
mistakes, omissions, defects or inconsistencies of a technical or immaterial nature, and such amendment shall become effective without any further consent of any other party to such Loan Document other than the Administrative Agent and WPZ. 

  
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 Section 9.04 Expenses; Indemnity; Damage Waiver 

(a) (i) WPZ agrees to pay, within 30 days of receipt by WPZ of request therefor, all reasonable out-of-pocket costs and expenses of the Joint
Lead Arrangers, the Administrative Agent and the Issuing Banks in connection with the syndication, preparation, execution, delivery, administration, modification and amendment of this Agreement, the Letters of Credit, the Notes, or any other Loan
Document and the other documents to be delivered under this Agreement, including the reasonable fees and out-of-pocket expenses of Bracewell & Giuliani LLP, counsel for the Administrative Agent, with respect thereto and with respect to
advising the Administrative Agent as to its rights and responsibilities under this Agreement, the Notes and any other Loan Document and the reasonable costs and expenses of the Issuing Banks in connection with any Letter of Credit, and (ii) WPZ
agrees to pay, on demand all costs and expenses, if any (including reasonable counsel fees and out-of-pocket expenses), of the Administrative Agent, the Issuing Banks and each Lender in connection with the enforcement (after the occurrence and
during the continuance of an Event of Default and whether through negotiations (including formal workouts or restructurings), legal proceedings or otherwise) against any Borrower or any Guarantor of any Loan Document. 

(b) Each Borrower agrees, to the fullest extent permitted by law, to indemnify and hold harmless the Administrative Agent, the Issuing Banks,
the Swing Line Lender, the Joint Lead Arrangers, each Lender (other than any Defaulting Lender) and each Related Party of any of the foregoing Persons (the “Indemnified Parties”) from and against any and all claims, damages, losses,
liabilities, costs, penalties, fees and expenses (including reasonable fees and disbursements of counsel) of any kind or nature whatsoever for which any of them may become liable or which may be incurred by or asserted against any of the Indemnified
Parties (other than claims and related damages, losses, liabilities, costs, penalties, fees and expenses made by one Lender (or its successors or assignees) against another Lender) arising out of, related to or in connection with (i) any Loan
Document or any other document or instrument delivered in connection herewith, (ii) any violation by any Borrower or any Subsidiary thereof of any Environmental Law or any other law, rule, regulation or order, (iii) any Loan, any Letter of
Credit or the use or proposed use of the proceeds of any Loan or Letter of Credit, (iv) any of the Aggregate Commitments or the commitments of the Swing Line Lender, (v) any transaction in which any proceeds of any Letter of Credit or Loan
are applied or (vi) any investigation, litigation or proceeding, whether or not any of the Indemnified Parties is a party thereto, related to or in connection with any of the foregoing or any Loan Document (EXPRESSLY INCLUDING ANY SUCH
CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR EXPENSE ATTRIBUTABLE TO THE ORDINARY, SOLE OR CONTRIBUTORY NEGLIGENCE OF SUCH INDEMNIFIED PARTY, BUT EXCLUDING ANY SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR EXPENSE SOUGHT TO BE
RECOVERED BY ANY INDEMNIFIED PARTY TO THE EXTENT SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR EXPENSE RESULTED FROM THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF SUCH INDEMNIFIED PARTY). IT IS THE INTENT OF THE PARTIES HERETO THAT EACH
INDEMNIFIED PARTY SHALL, TO THE EXTENT PROVIDED IN THIS SECTION 9.04(b), BE INDEMNIFIED FOR ITS OWN ORDINARY, SOLE OR CONTRIBUTORY NEGLIGENCE. 

(c) To the extent that any Borrower fails to pay any amount required to be paid by it to the Administrative Agent, the Swing Line Lender or
any Issuing Bank under paragraph (a) or 

  
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(b) of this Section, each Revolving Lender severally agrees to pay to the Administrative Agent, the Swing Line Lender or the applicable Issuing Bank, as the case may be, such Lender’s
Applicable Percentage (determined as of the time that the applicable unreimbursed expense or indemnity payment is sought) of such unpaid amount; provided that the unreimbursed expense or indemnified loss, claim, damage, liability, cost,
penalty, fee or related expense, as the case may be, was incurred by or asserted against the Administrative Agent, the Swing Line Lender or such Issuing Bank in its capacity as such. 

(d) To the fullest extent permitted by applicable law, no party shall assert, and each party hereby waives, any claim against any other party
or any Indemnified Party, for special, indirect, consequential or punitive damages (as opposed to direct or actual damages) arising out of, in connection with, or as a result of, this Agreement, any other Loan Document or any agreement or instrument
contemplated hereby, the transactions contemplated hereby or thereby, any Loan or Letter of Credit or the use of the proceeds thereof; provided, however, that the foregoing limitation shall not be deemed to impair or affect the
indemnification obligations of the Borrower under the Loan Documents. No Indemnified Party referred to in paragraph (b) above shall be liable for any damages arising from the use by unintended recipients of any information or other materials
distributed by it through telecommunications, electronic or other information transmission systems in connection with this Agreement or the other Loan Documents or the transactions contemplated hereby or thereby. 

(e) All amounts due under this Section shall be payable not later than 30 days after written demand therefor, such demand to be in reasonable
detail setting forth the basis for and method of calculation of such amounts. 
 Section 9.05 Successors and Assigns. 

(a) Successors and Assigns Generally. The provisions of this Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns permitted hereby, except that no Borrower may assign or otherwise transfer any of its rights or obligations hereunder without the prior written consent of the Administrative Agent and each Lender and no
Lender may assign or otherwise transfer any of its rights or obligations hereunder except (i) to an assignee in accordance with the provisions of paragraph (b) of this Section, (ii) by way of participation in accordance with the
provisions of paragraph (d) of this Section or (iii) by way of pledge or assignment of a security interest subject to the restrictions of paragraph (f) of this Section (and any other attempted assignment or transfer by any party
hereto shall be null and void). Nothing in this Agreement, expressed or implied, shall be construed to confer upon any Person (other than the parties hereto, their respective successors and assigns permitted hereby, Participants to the extent
provided in paragraph (d) of this Section and, to the extent expressly contemplated hereby, the Related Parties of each of the Administrative Agent and the Lenders) any legal or equitable right, remedy or claim under or by reason of this
Agreement. 

  
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 (b) Assignments by Lenders. Any Lender may at any time assign to one or more assignees all
or a portion of its rights and obligations under this Agreement (including all or a portion of its Commitment and the Loans at the time owing to it); provided that any such assignment shall be subject to the following conditions: 

(i) Minimum Amounts. 

(A) in the case of an assignment of the entire remaining amount of the assigning Lender’s Commitment and the Loans at the
time owing to it or in the case of an assignment to a Lender, an Affiliate of a Lender or an Approved Fund, no minimum amount need be assigned; and 

(B) in any case not described in paragraph (b)(i)(A) of this Section, the aggregate amount of the Commitment (which for this
purpose includes Loans outstanding thereunder) or, if the applicable Commitment is not then in effect, the principal outstanding balance of the Loans of the assigning Lender subject to each such assignment (determined as of the date the Assignment
and Assumption with respect to such assignment is delivered to the Administrative Agent or, if “Trade Date” is specified in the Assignment and Assumption, as of the Trade Date) shall not be less than $5,000,000 and shall be an integral
multiple of $1,000,000, unless each of the Administrative Agent and, so long as no Event of Default has occurred and is continuing, WPZ otherwise consents (each such consent not to be unreasonably withheld or delayed). 

(ii) Proportionate Amounts. Each partial assignment shall be made as an assignment of a proportionate part of all the
assigning Lender’s rights and obligations under this Agreement with respect to the Loans or the Commitment assigned and each assignment for any Borrower shall be made only if the same percentage of Commitments of the assigning Lender for each
of the other Borrowers and the same percentage of LC Exposure of the assigning Lender are simultaneously assigned by the assigning Lender to the same Eligible Assignee pursuant to the same Assignment and Acceptance. 

(iii) Required Consents. No consent shall be required for any assignment except to the extent required by paragraph
(b)(i)(B) of this Section and, in addition: 
 (A) the consent of WPZ (such consent not to be unreasonably withheld or
delayed) shall be required unless (x) an Event of Default has occurred and is continuing at the time of such assignment or (y) such assignment is to a Lender, an Affiliate of a Lender or an Approved Fund; 

(B) the consent of the Administrative Agent (such consent not to be unreasonably withheld or delayed) shall be required for
assignments if such assignment is to a Person that is not a Lender with a Commitment, an Affiliate of such Lender or an Approved Fund with respect to such Lender; 

(C) the consent of the Issuing Banks (such consent not to be unreasonably withheld or delayed) shall be required for any
assignment that increases the obligation of the assignee to participate in exposure under one or more Letters of Credit (whether or not then outstanding); and 

(D) the consent of the Swing Line Lender (such consent not to be unreasonably withheld or delayed) shall be required for
assignments if such assignment is to a Person that is not a Lender with a Commitment, an Affiliate of such Lender or an Approved Fund with respect to such Lender. 

  
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 (iv) Assignment and Assumption. The parties to each assignment shall
execute and deliver to the Administrative Agent an Assignment and Assumption, together with a processing and recordation fee of $3,500 (which fee may be waived by the Administrative Agent in its discretion), and the assignee, if it is not a Lender,
shall deliver to the Administrative Agent an Administrative Questionnaire. 
 (v) No Assignment to Borrower. No such
assignment shall be made to any Borrower or any Borrower’s Affiliates or Subsidiaries. 
 (vi) No Assignment to
Natural Persons or a Defaulting Lender. No such assignment shall be made to a natural person or a Defaulting Lender. 
 In connection with any
assignment of rights and obligations of any Defaulting Lender hereunder, no such assignment will be effective unless and until, in addition to the other conditions thereto set forth herein, the parties to the assignment make such additional payments
to the Administrative Agent in an aggregate amount sufficient, upon distribution thereof as appropriate (which may be outright payment, purchases by the assignee of participations or subparticipations, or other compensating actions, including
funding, with the consent of the Borrowers and the Administrative Agent, the applicable Pro Rata Share of Loans previously requested but not funded by the Defaulting Lender, to each of which the applicable assignee and assignor hereby irrevocably
consent), to (x) pay and satisfy in full all payment liabilities then owed by such Defaulting Lender to the Administrative Agent, each Issuing Bank, the Swing Line Lender and each other Lender hereunder (and interest accrued thereon), and
(y) acquire (and fund as appropriate) its full Pro Rata Share of all Loans and participations in Letters of Credit and Swing Line Loans in accordance with its Applicable Percentage. Notwithstanding the foregoing, in the event that any
assignment of rights and obligations of any Defaulting Lender hereunder becomes effective under applicable law without compliance with the provisions of this paragraph, then the assignee of such interest will be deemed to be a Defaulting Lender for
all purposes of this Agreement until such compliance. 
 Subject to acceptance and recording thereof by the Administrative Agent pursuant to paragraph
(c) of this Section, from and after the effective date specified in each Assignment and Assumption, the assignee thereunder shall be a party to this Agreement and, to the extent of the interest assigned by such Assignment and Assumption, have
the rights and obligations of a Lender under this Agreement, and the assigning Lender thereunder shall, to the extent of the interest assigned by such Assignment and Assumption, be released from its obligations under this Agreement (and, in the case
of an Assignment and Assumption covering all of the assigning Lender’s rights and obligations under this Agreement, such Lender shall cease to be a party hereto) but shall continue to be entitled to the benefits of Sections 2.15,
2.17 and 9.04 with respect to facts and circumstances occurring prior to the effective date of such assignment. Any purported assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with
this Section 9.05(b) shall be void, and any such purported assignment or transfer shall be treated for purposes of this Agreement as a sale by such Lender of a participation in such rights and obligations in accordance with paragraph
(d) of this Section. 

  
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 (c) Register. The Administrative Agent, acting solely for this purpose as an agent of the
Borrowers, shall maintain at one of its offices a copy of each Assignment and Assumption delivered to it and a register for the recordation of the names and addresses of the Lenders, the Credit Exposure, and principal amounts of the Loans owing to
(and stated interest thereon), each Lender pursuant to the terms hereof from time to time (the “Register”). The entries in the Register shall be conclusive, and the Borrowers, the Administrative Agent, the Issuing Banks and the
Lenders may treat each Person whose name is recorded in the Register pursuant to the terms hereof as a Lender hereunder for all purposes of this Agreement, notwithstanding notice to the contrary. The Register shall be available for inspection by any
Borrower and any Lender Party as to its own Commitments and amounts owing to it, at any reasonable time and from time to time upon reasonable prior notice. Upon its receipt of an executed Assignment and Acceptance, together with any Note subject to
such assignment, and the payment of any processing and registration fee, the Administrative Agent shall (i) accept such Assignment and Acceptance, (ii) record the information contained therein in the Register and (iii) give prompt
notice thereof to the parties thereto. 
 (d) Participations. Any Lender may at any time, without the consent of, or notice to, any
Borrower, the Administrative Agent, the Swing Line Lender or the Issuing Banks, sell participations to any Person (other than a natural person or any Borrower or any Borrower’s Affiliates or Subsidiaries) (each, a
“Participant”) in all or a portion of such Lender’s rights and/or obligations under this Agreement (including all or a portion of its Commitment and/or the Loans owing to it); provided that (i) such Lender’s
obligations under this Agreement shall remain unchanged, (ii) such Lender shall remain solely responsible to the other parties hereto for the performance of such obligations, (iii) such Lender receives the documentation required under
Section 2.17(f) from such participant (it being understood that the documentation required under Section 2.17(f) shall be delivered to the participating Lender), (iv) such Lender, acting solely for this purpose as a
non-fiduciary agent of the Borrowers, maintains a register on which it enters the name and address of each participant and the principal amounts (and stated interest) of each participant’s interest in the Loans or other obligations under the
Loan Documents (the “Participant Register”), provided that no Lender shall have any obligation to disclose all or any portion of the Participant Register (including the identity of any participant or any information relating
to a participant’s interest in any commitments, advances or its other obligations under any Loan Document) to any Person except to the extent that such disclosure is necessary to establish that such commitment, loan or other obligation is in
registered form for federal income Tax purposes or as otherwise required by law, and (v) the Borrowers, the Administrative Agent, the Lenders and the Issuing Banks shall continue to deal solely and directly with such Lender in connection with
such Lender’s rights and obligations under this Agreement. 
 Any agreement or instrument pursuant to which a Lender sells such a
participation shall provide that such Lender shall retain the sole right to enforce this Agreement and to approve any amendment, modification or waiver of any provision of this Agreement; provided that such agreement or instrument may provide
that such Lender will not, without the consent of the Participant, agree to any amendment, modification or waiver described in Section 9.03(b) that affects such Participant. Subject to paragraph (e) of this Section, the Borrowers
agree that each Participant shall be entitled to the benefits of Sections 2.15, and 2.17 to the same extent as if it were a Lender and had acquired its interest by assignment pursuant to paragraph (b) of this Section. To the
extent permitted by law, each Participant also shall be entitled to the benefits of Section 9.09 as though it were a Lender, provided such Participant agrees to be subject to Section 2.18(c) as though it were a Lender. 

  
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 (e) Limitations upon Participant Rights. A Participant shall not be entitled to receive
any greater payment under Sections 2.15 or 2.17 than the applicable Lender would have been entitled to receive with respect to the participation sold to such Participant unless the sale of the participation to such Participant is made
with the Borrowers’ prior written consent. 
 (f) Certain Pledges. Any Lender may at any time pledge or assign a security
interest in all or any portion of its rights under this Agreement to secure obligations of such Lender, including any pledge or assignment to secure obligations to a Federal Reserve Bank or any central bank having jurisdiction over such Lender;
provided that no such pledge or assignment shall release such Lender from any of its obligations hereunder or substitute any such pledgee or assignee for such Lender as a party hereto. 

Section 9.06 Survival. All covenants, agreements, representations and warranties made by the Borrowers herein and in the
certificates or other instruments delivered in connection with or pursuant to this Agreement shall be considered to have been relied upon by the other parties hereto and shall survive the execution and delivery of this Agreement and the making of
any Loans and issuance of any Letters of Credit, regardless of any investigation made by any such other party or on its behalf, and shall continue in full force and effect as long as the principal of or any accrued interest on any Loan or any fee or
any other amount payable under this Agreement is outstanding and unpaid or any Letter of Credit is outstanding and so long as the Aggregate Commitments have not expired or terminated. The provisions of Sections 2.15, 2.16, 2.17
and 9.04 and Article VIII shall survive and remain in full force and effect regardless of the consummation of the transactions contemplated hereby, the repayment of the Loans, the expiration or termination of the Letters of Credit and
the Aggregate Commitments or the termination of this Agreement or any provision hereof. 
 Section 9.07 Counterparts; Integration;
Effectiveness. This Agreement may be executed in counterparts (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract. This
Agreement and any separate letter agreements with respect to fees payable to the Administrative Agent constitute the entire contract among the parties relating to the subject matter hereof and supersede any and all previous agreements and
understandings, oral or written, relating to the subject matter hereof. This Agreement shall become effective on the Closing Date, and thereafter shall be binding upon and inure to the benefit of the parties hereto and their respective successors
and assigns. Delivery of an executed counterpart of a signature page of this Agreement by telecopy or pdf shall be effective as delivery of a manually executed counterpart of this Agreement. 

Section 9.08 Severability. Any provision of this Agreement held to be invalid, illegal or unenforceable in any jurisdiction shall,
as to such jurisdiction, be ineffective to the extent of such invalidity, illegality or unenforceability without affecting the validity, legality and enforceability of the remaining provisions hereof; and the invalidity of a particular provision in
a particular jurisdiction shall not invalidate such provision in any other jurisdiction. 

  
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 Section 9.09 Right of Setoff. If an Event of Default shall have occurred and be
continuing, each Lender Party is hereby authorized at any time and from time to time, to the fullest extent permitted by applicable law, to set off and apply any and all deposits (general or special, time or demand, provisional or final, in whatever
currency) at any time held and other obligations (in whatever currency) at any time owing by such Lender Party to or for the credit or the account of any Borrower or any Guarantor against any and all of the obligations of such Borrower or any
Guarantor now or hereafter existing under this Agreement or any other Loan Document to such Lender Party, irrespective of whether or not such obligations of such Borrower or any Guarantor may be owed to a branch or office of such Lender Party
different from the branch or office holding such deposit or obligated on such indebtedness, provided that demand has been made to the applicable Borrower for payment of such obligations. The rights of each Lender Party under this Section are
in addition to other rights and remedies (including other rights of setoff) that such Lender Party may have. Each Lender Party agrees to notify the Borrowers and the Administrative Agent promptly after any such setoff and application,
provided that the failure to give such notice shall not affect the validity of such setoff and application. 
 Section 9.10
Governing Law; Jurisdiction; Consent to Service of Process. 
 (a) This Agreement shall be construed in accordance with and governed
by the law of the State of New York. 
 (b) Each Borrower hereby irrevocably and unconditionally submits, for itself and its property, to
the nonexclusive jurisdiction of the Supreme Court of the State of New York sitting in New York County and of the United States District Court of the Southern District of New York, and any appellate court from any thereof, in any action or
proceeding arising out of or relating to this Agreement, or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding may
be heard and determined in such New York State or, to the extent permitted by law, in such federal court. Each of the parties hereto agrees that a final judgment in any such action or proceeding shall be conclusive and may be enforced in other
jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Agreement shall affect any right that the Administrative Agent, any Issuing Bank or any Lender may otherwise have to bring any action or proceeding
relating to this Agreement against any Borrower or its respective properties in the courts of any jurisdiction. 
 (c) Each Borrower hereby
irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection which it may now or hereafter have to the laying of venue of any suit, action or proceeding arising out of or relating to this
Agreement in any court referred to in paragraph (b) of this Section. Each of the parties hereto hereby irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such action or
proceeding in any such court. 
 (d) Each party to this Agreement irrevocably consents to service of process in the manner provided for
notices in Section 9.01. Nothing in this Agreement will affect the right of any party to this Agreement to serve process in any other manner permitted by law. 

  
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 Section 9.11 WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST
EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY
OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING
WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION. 

Section 9.12 Headings. Article and Section headings and the Table of Contents used herein are for convenience of reference only,
are not part of this Agreement and shall not affect the construction of, or be taken into consideration in interpreting, this Agreement. 

Section 9.13 Confidentiality. Each of the Administrative Agent and the Lender Parties agrees to maintain the confidentiality of
the Information (as defined below), except that Information may be disclosed (a) to its Related Parties (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and
instructed to keep such Information confidential) to the extent used in connection with the administration of this Agreement, (b) to the extent requested by any regulatory authority purporting to have jurisdiction over it (including any
self-regulatory authority, such as the National Association of Insurance Commissioners), (c) to the extent required by applicable laws or regulations or by any subpoena or similar legal process, (d) to any other party hereto,
(e) during the existence of an Event of Default, in connection with the exercise of any remedies hereunder or under any other Loan Document or any action or proceeding relating to this Agreement or any other Loan Document or the enforcement of
rights hereunder or thereunder, (f) subject to an agreement containing provisions substantially the same as those of this Section, to (i) any assignee of or Participant in, or any prospective assignee of or Participant in, any of its
rights or obligations under this Agreement or (ii) any actual or prospective party (or its managers, administrators, trustees, partners, directors, officers, employees, agents, advisors and other representatives) to any swap, derivative or
other similar transaction under which payments are to be made by reference to any Borrower and its respective obligations, this Agreement or payments hereunder, (iii) any rating agency, (iv) the CUSIP Service Bureau or any similar
organization or (v) any assignee in connection with any pledges permitted by Section 9.05(f), (g) with the consent of WPZ, or (h) to the extent such Information (x) becomes publicly available other than as a result of
a breach of this Section or (y) becomes available to the Administrative Agent, any Lender Party or any of their respective Affiliates on a nonconfidential basis from a source other than a Borrower. 

For purposes of this Section, “Information” means all information received from any Borrower or any of its Subsidiaries relating to the Borrowers or
any of their respective Subsidiaries or any of their respective businesses, other than any such information that is available to the Administrative Agent or any Lender Party on a nonconfidential basis prior to disclosure by any Borrower or any of
its Subsidiaries. Any Person required to maintain the confidentiality of 

  
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Information as provided in this Section shall be considered to have complied with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of
such Information as such Person would accord to its own confidential information. 
 Section 9.14 Treatment of Information. 

(a) Certain of the Lenders may enter into this Agreement and take or not take action hereunder or under the other Loan Documents on the basis
of information that may contain material non-public information with respect to the Borrowers or their securities (such material non-public information, “Restricting Information”). Other Lenders may enter into this Agreement and
take or not take action hereunder or under the other Loan Documents on the basis of information that does not contain Restricting Information. Each Lender Party acknowledges that United States federal and state securities laws prohibit any person
from purchasing or selling securities on the basis of material, non-public information concerning such issuer of such securities or, subject to certain limited exceptions, from communicating such information to any other Person. Neither the
Administrative Agent nor any of its Related Parties nor the Borrowers nor any of their Related Parties, shall, by making any Communications (including Restricting Information) available to a Lender Party, by participating in any conversations or
other interactions with a Lender Party or otherwise, make or be deemed to make any statement with regard to or otherwise warrant that any such information or Communication does or does not contain Restricting Information (except with respect to the
Borrowers and their Related Parties, pursuant to Section 9.14(b)), nor shall the Administrative Agent or any of its Related Parties nor the Borrowers nor any of their Related Parties be responsible or liable in any way for any decision a
Lender Party may make to limit or to not limit its access to Restricting Information. In particular, none of the Administrative Agent nor any of its Related Parties nor the Borrowers nor any of their Related Parties (i) shall have, and the
Administrative Agent, on behalf of itself and each of its Related Parties, hereby disclaims, any duty to ascertain or inquire as to whether or not a Lender Party has or has not limited its access to Restricting Information, such Lender Party’s
policies or procedures regarding the safeguarding of material, nonpublic information or such Lender Party’s compliance with applicable laws related thereto or (ii) shall have, or incur, any liability to any Borrower or Lender Party or any
of their respective Related Parties arising out of or relating to the Administrative Agent or any of its Related Parties providing or not providing Restricting Information to any Lender Party. 

(b) Each Borrower agrees that (i) all Communications it provides to the Administrative Agent intended for delivery to the Lender Parties
whether by posting to the Approved Electronic Platform or otherwise shall be clearly and conspicuously marked “PUBLIC” if such Communications do not contain Restricting Information which, at a minimum, shall mean that the word
“PUBLIC” shall appear prominently on the first page thereof, (ii) by marking Communications “PUBLIC,” the Borrowers shall be deemed to have authorized the Administrative Agent and the Lender Parties to treat such
Communications as either publicly available information or not material information (although, in this latter case, such Communications may contain sensitive business information and, therefore, remain subject to the confidentiality undertakings of
Section 9.14) with respect to the Borrowers or their securities for purposes of United States federal and state securities laws, (iii) all Communications marked “PUBLIC” may be delivered to all Lender Parties and may be
made available through a portion of the Approved Electronic Platform designated “Public Side Information,” and (iv) the 

  
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Administrative Agent shall be entitled to treat any Communications that are not marked “PUBLIC” as Restricting Information and may post such Communications to a portion of the Approved
Electronic Platform not designated “Public Side Information.” Neither the Administrative Agent nor any of its Affiliates shall be responsible for any statement or other designation by any Borrower regarding whether a Communication contains
or does not contain material non-public information with respect to the Borrowers or their securities nor shall the Administrative Agent or any of its Affiliates incur any liability to any Borrower, any Lender Party or any other Person for any
action taken by the Administrative Agent or any of its Affiliates based upon such statement or designation, including any action as a result of which Restricting Information is provided to a Lender Party that may decide not to take access to
Restricting Information. Nothing in this Section 9.14 shall modify or limit a Lender Party’s obligations under Section 9.13 with regard to Communications and the maintenance of the confidentiality of or other treatment
of Information. 
 (c) Each Lender Party acknowledges that circumstances may arise that require it to refer to Communications that might
contain Restricting Information. Accordingly, each Lender Party agrees that it will nominate at least one designee to receive Communications (including Restricting Information) on its behalf and identify such designee (including such designee’s
contact information) on such Lender Party’s Administrative Questionnaire. Each Lender Party agrees to notify the Administrative Agent from time to time of such Lender Party’s designee’s e-mail address to which notice of the
availability of Restricting Information may be sent by electronic transmission. 
 (d) Each Lender Party acknowledges that Communications
delivered hereunder and under the other Loan Documents may contain Restricting Information and that such Communications are available to all Lender Parties generally. Each Lender Party that elects not to take access to Restricting Information does
so voluntarily and, by such election, acknowledges and agrees that the Administrative Agent and other Lender Parties may have access to Restricting Information that is not available to such electing Lender Party. None of the Administrative Agent nor
any Lender Party with access to Restricting Information shall have any duty to disclose such Restricting Information to such electing Lender Party or to use such Restricting Information on behalf of such electing Lender Party, and shall not be
liable for the failure to so disclose or use, such Restricting Information. 
 (e) The provisions of the foregoing clauses of this
Section 9.14 are designed to assist the Administrative Agent, the Lender Parties and the Borrower, in complying with their respective contractual obligations and applicable law in circumstances where certain Lender Parties express a
desire not to receive Restricting Information notwithstanding that certain Communications hereunder or under the other Loan Documents or other information provided to the Lender Parties hereunder or thereunder may contain Restricting Information.
Neither the Administrative Agent nor any of its Related Parties warrants or makes any other statement with respect to the adequacy of such provisions to achieve such purpose nor does the Administrative Agent or any of its Related Parties warrant or
make any other statement to the effect that any Borrower’s or Lender Party’s adherence to such provisions will be sufficient to ensure compliance by any Borrower or Lender Party with its contractual obligations or its duties under
applicable law in respect of Restricting Information and each of the Lender Parties and each Borrower assumes the risks associated therewith. 

  
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 Section 9.15 Interest Rate Limitation. Notwithstanding anything herein to the
contrary, if at any time the interest rate applicable to any Loan, together with all fees, charges and other amounts which are treated as interest on such Loan under applicable law (collectively the “Charges”), shall exceed the
maximum lawful rate (the “Maximum Rate”) which may be contracted for, charged, taken, received or reserved by the Lender holding such Loan in accordance with applicable law, the rate of interest payable in respect of such Loan
hereunder, together with all Charges payable in respect thereof, shall be limited to the Maximum Rate and, to the extent lawful, the interest and Charges that would have been payable in respect of such Loan but were not payable as a result of the
operation of this Section shall be cumulated and the interest and Charges payable to such Lender in respect of other Loans or periods shall be increased (but not above the Maximum Rate therefor) until such cumulated amount, together (to the extent
lawful) with interest thereon at the Federal Funds Effective Rate to the date of repayment, shall have been received by such Lender. 

Section 9.16 No Waiver; Remedies. No failure on the part of any Lender Party or the Administrative Agent to exercise, and no delay
in exercising, any right under this Agreement or any other Loan Document shall operate as a waiver thereof, nor shall any single or partial exercise of any such right preclude any other or further exercise thereof or the exercise of any other right.
The remedies provided in this Agreement are cumulative and not exclusive of any remedies provided by law. 
 Section 9.17 Liability
of General Partner. It is hereby understood and agreed that the General Partner shall have no personal liability, as general partner or otherwise, for the payment of any amount owing or to be owing hereunder or under the other Loan Documents.
Notwithstanding the foregoing, nothing in this Section 9.17 shall be construed to modify or supersede any obligation of the General Partner to restore any negative balance in its capital account (maintained by WPZ pursuant to the
Partnership Agreement) upon liquidation of its interest in the Borrower. 
 Section 9.18 USA Patriot Act Notice. Each Lender
Party and Administrative Agent (for itself and not on behalf of any Lender) hereby notifies each Borrower that pursuant to the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2003))
(the “Act”), it is required to obtain, verify and record information that identifies each Borrower, which information includes the name and address of such Borrower and other information that will allow such Lender Party or the
Administrative Agent, as applicable, to identify each Borrower in accordance with the Act. Each Borrower shall, following a request by the Administrative Agent or any Lender Party, provide all documentation and other information that the
Administrative Agent or such Lender Party reasonably requests in order to comply with its ongoing obligations under applicable “know your customer” and anti-money laundering rules and regulations, including the Act. 

Section 9.19 No Advisory or Fiduciary Responsibility. In connection with all aspects of each transaction contemplated hereby, each
Borrower acknowledges and agrees, and acknowledges its Affiliates’ understanding, that: (a) the credit facility provided for hereunder and any related arranging or other services in connection therewith (including in connection with any
amendment, waiver or other modification hereof or of any other Loan Document) are an arm’s-length commercial transaction between the Borrowers, on the one hand, and the 

  
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Administrative Agent and the Lenders, on the other hand, and each Borrower is capable of evaluating and understanding and understands and accepts the terms, risks and conditions of the
transactions contemplated hereby and by the other Loan Documents (including any amendment, waiver or other modification hereof or thereof); (b) in connection with the process leading to such transaction, the Administrative Agent and the Lenders
are and have been acting solely as principals and are not the financial advisors, agents or fiduciaries, for any Borrower or any of their respective Affiliates, stockholders, creditors or employees or any other Person; (c) the Administrative Agent
and the Lenders have not assumed or will assume an advisory, agency or fiduciary responsibility in favor of any Borrower with respect to any of the transactions contemplated hereby or the process leading thereto, including with respect to any
amendment, waiver or other modification hereof or of any other Loan Document (irrespective of whether the Administrative Agent or any Lender advised or is currently advising any Borrower or any of their respective Affiliates on other matters) and
the Administrative Agent and the Lenders have no obligation to any Borrower or any of their respective Affiliates with respect to the transactions contemplated hereby except those obligations expressly set forth herein and in the other Loan
Documents; (d) the Administrative Agent, the Lenders and their respective Affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Borrowers and their respective Affiliates, and the
Administrative Agent and the Lenders have no obligation to disclose any of such interests by virtue of any advisory, agency or fiduciary relationship; and (e) the Administrative Agent and the Lenders have not provided and will not provide any
legal, accounting, regulatory or Tax advice with respect to any of the transactions contemplated hereby (including any amendment, waiver or other modification hereof or of any other Loan Document) and each of the Borrowers has consulted its own
legal, accounting, regulatory and Tax advisors to the extent it has deemed appropriate. Each of the Borrowers hereby waives and releases, to the fullest extent permitted by law, any claims that it may have against the Administrative Agent or the
Lenders with respect to any breach or alleged breach of agency (other than against the Administrative Agent acting in its administrative capacity) or fiduciary duty; provided, however that it being understood and agreed that the use of the
term “agent” herein or in any other Loan Documents (or any other similar term) with reference to the Administrative Agent is not intended to connote any fiduciary or other implied (or express) obligations arising under agency doctrine of
any applicable law. Instead such term is used as a matter of market custom, and is intended to create or reflect only an administrative relationship between contracting parties. 

Section 9.20 GP Buy-in. Notwithstanding any term or provision herein or in any other Loan Document, the parties hereto agree that
any GP Buy-in and any transaction related thereto is expressly permitted under this Agreement and each other Loan Document without any further action, waiver, consent or agreement by the Administrative Agent, the Joint Lead Arrangers, any other
agent or any Lender from time to time party hereto. As used herein, “GP Buy-in” refers to any sale, lease, transfer or disposition by Williams of its Equity Interests in the General Partner to WPZ. 

Section 9.21 Merger. Notwithstanding any term or provision herein or in any other Loan Document, the parties hereto agree that the
ACMP Merger and each other transaction related thereto is expressly permitted under this Agreement and each other Loan Document without any further action, waiver, consent or agreement by the Administrative Agent, the Joint Lead Arrangers, any other
agent or any Lender from time to time party hereto; provided that, for the avoidance of doubt, the Borrower shall be required to comply with Section 6.07, notwithstanding this Section 9.21. 

  
 98 

 Section 9.22 Amendment and Restatement. This Agreement represents an amendment and
restatement of the Existing Credit Agreement. Any indebtedness under the Existing Credit Agreement continues, without duplication, under this Agreement, and the execution of this Agreement does not indicate a payment, satisfaction, novation or
discharge thereof. 
 [Signature Pages to Follow] 

  
 99 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their
respective authorized officers as of the day and year first above written. 
  

			
	ACCESS MIDSTREAM PARTNERS, L.P.
		
	By:	 	WPZ GP LLC, General Partner
		
	By:	 	 /s/ Peter S. Burgess

	Name:	 	Peter S. Burgess
	Title:	 	Vice President and Treasurer
	
	NORTHWEST PIPELINE LLC
		
	By:	 	 /s/ Peter S. Burgess

	Name:	 	Peter S. Burgess
	Title:	 	Treasurer
	
	TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC
		
	By:	 	 /s/ Peter S. Burgess

	Name:	 	Peter S. Burgess
	Title:	 	Treasurer

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	CITIBANK, N.A.,
	 Individually and as Administrative Agent and

as an Issuing Bank

		
	By:	 	 /s/ Lisa Huang

	Name:	 	Lisa Huang
	Title:	 	Attorney-in-fact

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	BARCLAYS BANK PLC,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Ann E. Sutton

	Name:	 	Ann E. Sutton
	Title:	 	Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	THE BANK OF NOVA SCOTIA,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ John Frazell

	Name:	 	John Frazell
	Title:	 	Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	JPMORGAN CHASE BANK, N.A.,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Dave Katz

	Name:	 	Dave Katz
	Title:	 	Executive Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	THE ROYAL BANK OF SCOTLAND PLC,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Steve Ray

	Name:	 	Steve Ray
	Title:	 	Authorised Signatory

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	WELLS FARGO BANK, N.A.,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Nathan Starr

	Name:	 	Nathan Starr
	Title:	 	Assistant Vice President

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	BANK OF AMERICA, N.A.,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Ronald E. McKaig

	Name:	 	Ronald E. McKaig
	Title:	 	Managing Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	UBS AG, STAMFORD BRANCH,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Darlene Arias

	Name:	 	Darlene Arias
	Title:	 	Director
		
	By:	 	 /s/ Houssem Daly

	Name:	 	Houssem Daly
	Title:	 	Associate Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK,
	Individually and as an Issuing Bank
		
	By:	 	 /s/ Darrell Stanley

	Name:	 	Darrell Stanley
	Title:	 	Managing Director
		
	By:	 	 /s/ Michael D. Willis

	Name:	 	Michael D. Willis
	Title:	 	Managing Director

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
		
	By:	 	 /s/ Nupur Kumar

	Name:	 	Nupur Kumar
	Title:	 	Authorized Signatory
		
	By:	 	 /s/ Karim Rahimtoola

	Name:	 	Karim Rahimtoola
	Title:	 	Authorized Signatory

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	DEUTSCHE BANK AG NEW YORK BRANCH
		
	By:	 	 /s/ Ming K. Chu

	Name:	 	Ming K. Chu
	Title:	 	Vice President
		
	By:	 	 /s/ Virginia Cosenza

	Name:	 	Virginia Cosenza
	Title:	 	Vice President

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	MORGAN STANLEY BANK, N.A.
		
	By:	 	 /s/ Michael King

	Name:	 	Michael King
	Title:	 	Authorized Signatory

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	ROYAL BANK OF CANADA
		
	By:	 	 /s/ Mark Lumpkin, Jr.

	Name:	 	Mark Lumpkin, Jr.
	Title:	 	Authorized Signatory

  
 Signature Page to Second
Amended & Restated Credit Agreement 
 Williams Partners L.P. 

 
			
	COMPASS BANK
		
	By:	 	 /s/ Kathleen L. Bowen

	Name:	 	Kathleen L. Bowen
	Title:	 	Senior Vice President

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	DNB CAPITAL LLC
		
	By:	 	 /s/ Robert Dupree

	Name:	 	Robert Dupree
	Title:	 	Senior Vice President
		
	By:	 	 /s/ Joe Hykle

	Name:	 	Joe Hykle
	Title:	 	Senior Vice President

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	MIZUHO BANK, LTD.
		
	By:	 	 /s/ Leon Mo

	Name:	 	Leon Mo
	Title:	 	Authorized Signatory

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	SUMITOMO MITSUI BANKING CORPORATION
		
	By:	 	 /s/ Shuji Yabe

	Name:	 	Shuji Yabe
	Title:	 	Managing Director

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	TORONTO DOMINION (NEW YORK) LLC
		
	By:	 	 /s/ Debbi L. Brito

	Name:	 	Debbi L. Brito
	Title:	 	Authorized Signatory

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	THE BANK OF TOKYO MITSUBISHI UFJ, LTD.
		
	By:	 	 /s/ Todd Vaubel

	Name:	 	Todd Vaubel
	Title:	 	VP

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	U.S. BANK NATIONAL ASSOCIATION
		
	By:	 	 /s/ John Prigge

	Name:	 	John Prigge
	Title:	 	Vice President

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	BOKF, N.A. dba Bank of Oklahoma
		
	By:	 	 /s/ J. Nick Cooper

	Name:	 	J. Nick Cooper
	Title:	 	V.P.

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	PNC BANK, NATIONAL ASSOCIATION
		
	By:	 	 /s/ M. Colin Warman

	Name:	 	M. Colin Warman
	Title:	 	Vice President

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 
			
	SUNTRUST BANK
		
	By:	 	 /s/ Carmen Malizia

	Name:	 	Carmen Malizia
	Title:	 	Director

 Signature Page to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 SCHEDULE 2.01 

Commitments/Letter of Credit Commitments 
  

									
	 Lender
	  	Commitment	 	  	Letter of Credit
Commitment	 
	 Citibank, N.A.
	  	$	170,000,000	  	  	$	125,000,000	  
	 Bank of America, N.A.
	  	$	170,000,000	  	  	$	125,000,000	  
	 Barclays Bank PLC
	  	$	170,000,000	  	  	$	125,000,000	  
	 Credit Agricole Corporate and Investment Bank
	  	$	170,000,000	  	  	$	125,000,000	  
	 JPMorgan Chase Bank, N.A.
	  	$	170,000,000	  	  	$	125,000,000	  
	 The Bank of Nova Scotia
	  	$	170,000,000	  	  	$	125,000,000	  
	 The Royal Bank of Scotland plc
	  	$	170,000,000	  	  	$	125,000,000	  
	 UBS AG, Stamford Branch
	  	$	170,000,000	  	  	$	125,000,000	  
	 Wells Fargo Bank, N.A.
	  	$	170,000,000	  	  	$	125,000,000	  
	 Compass Bank
	  	$	160,000,000	  	  			
	 Credit Suisse AG, Cayman Islands Branch
	  	$	160,000,000	  	  			
	 Deutsche Bank AG New York Branch
	  	$	160,000,000	  	  			
	 DNB Capital LLC
	  	$	160,000,000	  	  			
	 Mizuho Bank, Ltd.
	  	$	160,000,000	  	  			
	 Morgan Stanley Bank, N.A.
	  	$	160,000,000	  	  			
	 Royal Bank of Canada
	  	$	160,000,000	  	  			
	 Sumitomo Mitsui Banking Corporation
	  	$	160,000,000	  	  			
	 SunTrust Bank
	  	$	160,000,000	  	  			
	 The Bank of Tokyo-Mitsubishi UFJ, Ltd.
	  	$	160,000,000	  	  			
	 U.S. Bank National Association
	  	$	160,000,000	  	  			
	 Toronto Dominion (New York) LLC
	  	$	100,000,000	  	  			
	 BOKF, N.A. dba Bank of Oklahoma
	  	$	75,000,000	  	  			
	 PNC Bank, National Association
	  	$	35,000,000	  	  			
	 TOTAL
	  	$	3,500,000,000	  	  	$	1,125,000,000	  

 Schedule 2.01 to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 SCHEDULE 2.06 

Existing Letters of Credit 
  

																									
	L/C Number		  		Issued By		  		Beneficiary		  		Type		  		Issue Date		  		Expiry Date		  		Balance
	IS0034405U		 		Wells Fargo Bank, N.A.		 		Medina Electric Cooperative		 		FINLC		 		5/13/2013		 		5/13/2015		 		$260,000.00
	IS0013408		 		Wells Fargo Bank, N.A.		 		Zurich American Insurance Company		 		FINLC		 		7/5/2012		 		7/6/2015		 		$1,050,000.00
	NZS666900		 		Wells Fargo Bank, N.A.		 		City of Haltom City		 		FINLC		 		8/30/2010		 		7/22/2015		 		$1,000,000.00

 Schedule 2.06 to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 SCHEDULE 6.04 

Restrictive Agreements 

None. 
  

 
  

Schedule 6.04 to Second Amended & Restated Credit Agreement 

Williams Partners L.P. 

 EXHIBIT A 

FORM OF 
 ASSIGNMENT AND
ACCEPTANCE 
 Reference is made to the Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as amended
and in effect on the date hereof, the “Credit Agreement”), among Williams Partners L.P., Northwest Pipeline LLC, Transcontinental Gas Pipe Line Company, LLC, the Lenders named therein and Citibank, N.A., as Administrative Agent for
the Lenders. Terms defined in the Credit Agreement are used herein with the same meanings. 
 The Assignor named herein hereby sells and
assigns, without recourse, to the Assignee named herein, and the Assignee hereby purchases and assumes, without recourse, from the Assignor, effective as of the Assignment Date set forth herein the interests set forth herein (the “Assigned
Interest”) in the Assignor’s rights and obligations under the Credit Agreement, including, without limitation, the interests set forth herein in the Commitment of the Assignor on the Assignment Date and Loans owing to the Assignor
which are outstanding on the Assignment Date, together with the participations in Letters of Credit and LC Disbursements held by the Assignor on the Assignment Date, but excluding accrued interest and fees to and excluding the Assignment Date. The
Assignee hereby acknowledges receipt of a copy of the Credit Agreement. From and after the Assignment Date (i) the Assignee shall be a party to and be bound by the provisions of the Credit Agreement and, to the extent of the Assigned Interest,
have the rights and obligations of a Lender thereunder and (ii) the Assignor shall, to the extent of the Assigned Interest, relinquish its rights and be released from its obligations under the Credit Agreement. 

This Assignment and Acceptance is being delivered to the Administrative Agent together with (i) if the Assignee is a Foreign Lender, any
documentation required to be delivered by the Assignee pursuant to Section 2.17(f) of the Credit Agreement, duly completed and executed by the Assignee, and (ii) if the Assignee is not already a Lender under the Credit Agreement, an
Administrative Questionnaire in the form supplied by the Administrative Agent, duly completed by the Assignee. The [Assignee/Assignor] shall pay the fee payable to the Administrative Agent pursuant to Section 9.05(b) of the Credit
Agreement. 
 This Assignment and Acceptance shall be governed by and construed in accordance with the laws of the State of New York.

 Date of Assignment: 
 Legal Name of Assignor: 

Legal Name of Assignee: 
 Assignee’s Address for Notices:

 Effective Date of Assignment 
 (“Assignment
Date”): 

									
	 Facility
	  	Principal Amount Assigned	 	  	Percentage Assigned of
Facility/Commitment (set forth, to
at least 8 decimals, as a 
percentage
of the Facility and the aggregate
Commitments of all Lenders
thereunder)	 
	 Commitment Assigned:
	  	$	 	  	  	 	    	% 
	 Loans:
	  				  			

 Notwithstanding any term or provision herein or in any other agreement, instrument or document between the parties to this
Assignment and Acceptance evidencing or governing the transfer of the Assigned Interest from the Assignor to the Assignee (including any defined terms or section headings therein), the parties to this Assignment and Assumption intend that the
transaction providing for transfer of the Assigned Interest from the Assignor to the Assignee be a sale by the Assignor and a purchase by the Assignee of the Assigned Interest, and not an assignment by the Assignor and an assumption by the Assignee
of the Assigned Interest. 
 The terms set forth above are hereby agreed to: 

 

			
	[Name of Assignor], as Assignor
		
	By:	 	  

		 	Name:
		 	Title:
	
	[Name of Assignee], as Assignee
		
	By:	 	  

		 	Name:
		 	Title:

  
 2 

 The undersigned hereby consent to the within assignment: 

 

									
	Williams Partners L.P.				 Citibank, N.A.,
 as Administrative
Agent

					
	By:		WPZ GP LLC,						
	General Partner						
					
	By:		  
				By:		  

			Name:						Name:
			Title:						Title:
			
	Citibank, N.A.,				Barclays Bank PLC,
	as Swing Line Lender and as Issuing Bank				as Issuing Bank
					
	By:		  
				By:		  

			Name:						Name:
			Title:						Title:
			
	JPMorgan Chase Bank, N.A.,				Bank of America, N.A.,
	as Issuing Bank				as Issuing Bank
					
	By:		  
				By:		  

			Name:						Name:
			Title:						Title:
			
	Credit Agricole Corporate and Investment Bank,				 The Royal Bank of Scotland plc,

	as Issuing Bank				as Issuing Bank
					
	By:		  
				By:		  

			Name:						Name:
			Title:						Title:
			
	The Bank of Nova Scotia,				UBS AG, Stamford Branch,
	as Issuing Bank				as Issuing Bank
					
	By:		  
				By:		  

			Name:						Name:
			Title:						Title:

  
 3 

			
	Wells Fargo Bank, N.A.,
	as Issuing Bank
		
	By:	 	  

		 	Name:
		 	Title:

  
 4 

 EXHIBIT B-1 

FORM OF BORROWING REQUEST 

Dated                      

Citibank, N.A., 
 as Administrative Agent 

2 Penns Way, Suite 200 
 New Castle, Delaware 19720 

Ladies and Gentlemen: 
 This Borrowing Request
is delivered to you by [Williams Partners L.P.]1[Northwest Pipeline LLC] [Transcontinental Gas Pipe Line Company, LLC] (the “Borrower”) under Section 2.03 of the
Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as restated, amended, modified, supplemented and in effect, the “Credit Agreement”), by and among the Borrower, [Williams Partners L.P.],
[Northwest Pipeline LLC], [Transcontinental Gas Pipe Line Company, LLC], the Lenders party thereto, and Citibank, N.A., as Administrative Agent. 

1. The Borrower hereby requests that the Lenders make a Loan or Loans in the aggregate principal amount of
$                    (the “Loan” or the “Loans”).2 

2. The Borrower hereby requests that the Loan or Loans be made on the following Business Day:
3 
 3. The Borrower hereby requests that the Loan or Loans be of the Type and have the
Interest Period set forth below: 
  

							
	 Type of Loan
	  	Principal
Component of
Loan	  	Interest Period
(if applicable)	  	Maturity Date
for
Interest Period
(if applicable)
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	

  

	1 	Access Midstream Partners, L.P. will delivering the Borrowing Request on the Closing Date. 

	2 	Complete with an amount in accordance with Section 2.03 of the Credit Agreement. 

	3 	Complete with a Business Day in accordance with Section 2.03 of the Credit Agreement 

  
 1 

 4. The Borrower hereby requests that the funds from the Loan or Loans be disbursed to the
following bank account:
                                        . 

5. After giving effect to any requested Loan, the Aggregate Outstanding Credit Exposure as of the date hereof (including the requested Loans)
does not exceed the maximum amount permitted to be outstanding pursuant to the terms of the Credit Agreement. 
 6. All of the conditions
applicable to the Loans requested herein as set forth in the Credit Agreement will be satisfied on the date of such Loans. 
 7. All
capitalized undefined terms used herein have the meanings assigned thereto in the Credit Agreement. 
 IN WITNESS WHEREOF, the undersigned
have executed this Borrowing Request this      day of             ,         . 

 

			
	[WILLIAMS PARTNERS L.P.
		
	By:		WPZ GP LLC
			its General Partner]
	[NORTHWEST PIPELINE LLC]
	[TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC]
		
	By:		  

			Name:
			Title:

  
 2 

 EXHIBIT B-2 

FORM OF SWING LINE BORROWING NOTICE 

Dated                      

Citibank, N.A., 
 as Administrative Agent and as
Swing Line Lender 
 2 Penns Way, Suite 200 
 New Castle,
Delaware 19720 
 Ladies and Gentlemen: 
 This
Swing Line Borrowing Notice is delivered to you by [Williams Partners L.P.] [Northwest Pipeline LLC] [Transcontinental Gas Pipe Line Company, LLC] (the “Borrower”) under Section 2.05(b) of the Second Amended &
Restated Credit Agreement dated as of February 2, 2015 (as restated, amended, modified, supplemented and in effect, the “Credit Agreement”), by and among the Borrower, [Williams Partners L.P.], [Northwest Pipeline LLC],
[Transcontinental Gas Pipe Line Company, LLC], the Lenders party thereto, and Citibank, N.A., as Administrative Agent. 
 1. The Borrower
hereby requests that the Swing Line Lender make a Swing Line Loan or Swing Line Loans in the aggregate principal amount of $        (the “Swing Line Loan” or the “Swing Line
Loans”).1 
 2. The Borrower hereby requests that the Swing Line Loan or Swing
Line Loans be made on the following Business Day:2 
 3. After giving effect to any
requested Swing Line Loan, the Aggregate Outstanding Credit Exposure as of the date hereof (including the requested Swing Line Loans) does not exceed the maximum amount permitted to be outstanding pursuant to the terms of the Credit Agreement. 

4. All of the conditions applicable to the Swing Line Loans requested herein as set forth in the Credit Agreement will be satisfied on the
date of such Swing Line Loans. 
 5. All capitalized undefined terms used herein have the meanings assigned thereto in the Credit Agreement.

  

	1 	Complete with an amount in accordance with Section 2.05(b) of the Credit Agreement. 

	2 	Complete with a Business Day in accordance with Section 2.05(b) of the Credit Agreement. 

  
 1 

 IN WITNESS WHEREOF, the undersigned have executed this Swing Line Borrowing Notice this
    day of             ,         . 
  

			
	[WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner]
	[NORTHWEST PIPELINE LLC]
	[TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC]
		
	By:	 	  

		 	Name:
		 	Title:

  
 2 

 EXHIBIT C 

FORM OF 
 INTEREST
ELECTION REQUEST 
 Dated
                     
 Citibank, N.A., 

as Administrative Agent 
 2 Penns Way, Suite 200

 New Castle, Delaware 19720 
 Ladies and Gentlemen: 

This irrevocable Interest Election Request (the “Interest Election Request”) is delivered to you under
Section 2.08 of the Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as restated, amended, modified, supplemented and in effect from time to time, the “Credit Agreement”), by and
among Williams Partners L.P., Northwest Pipeline LLC and Transcontinental Gas Pipe Line Company, LLC (each a “Borrower”), the Lenders party thereto (the “Lenders”), and Citibank, N.A., as Administrative Agent (the
“Administrative Agent”). 
 1. This Interest Election Request is submitted for the purpose of: 

(a) [Converting] [Continuing] a
                    Loan [into] [as] a
                    Loan.1 

(b) The aggregate outstanding principal balance of such Loan is $        . 

(c) The last day of the current Interest Period for such Loan is
                    .2 

(d) The principal amount of such Loan to be [converted] [continued] is $        .3 
 (e) The requested effective date of the [conversion] [continuation] of
such Loan is                     .4 

(f) The requested Interest Period applicable to the [converted] [continued] Loan is
                    .5 

 

	1 	Delete the bracketed language and insert “ABR” or “Eurodollar”, as applicable, in each blank. 

	2 	Insert applicable date for any Eurodollar Loan being converted or continued. 

	3 	Complete with an amount in compliance with Section 2.08 of the Credit Agreement. 

	4 	Complete with a Business Day in compliance with Section 2.08 of the Credit Agreement. 

	5 	Complete for each Eurodollar Loan in compliance with the definition of the term “Interest Period” specified in Section 1.01. 

  
 1 

 2. With respect to a Borrowing to be converted to or continued as a Eurodollar Borrowing, no
Event of Default with respect to the Borrower making this Interest Election Request exists, and none will exist upon the conversion or continuation of the Borrowing requested herein. 

3. All capitalized undefined terms used herein have the meanings assigned thereto in the Credit Agreement. 

IN WITNESS WHEREOF, the undersigned has executed this Interest Election Request this     day of
            ,         . 
  

			
	[WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner]
	[NORTHWEST PIPELINE LLC]
	[TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC]
		
	By:	 	  

		 	Name:
		 	Title:

  
 2 

 EXHIBIT D 

FORM OF COMPLIANCE CERTIFICATE 

The undersigned hereby certifies that he is the
                                        of [WPZ
GP LLC, the general partner of Williams Partners L.P.][Northwest Pipeline LLC] [Transcontinental Gas Pipe Line Company, LLC] (the “Borrower”), and that as such he is authorized to execute this certificate on behalf of the Borrower.
With reference to the Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as restated, amended, modified, supplemented and in effect from time to time, the “Agreement”), among the Borrower,
[Williams Partners L.P.], [Northwest Pipeline LLC], [Transcontinental Gas Pipe Line Company, LLC], Citibank, N.A., as Administrative Agent (the “Agent”), for the lenders (the “Lenders”), which are or become a party
thereto, and such Lenders, the undersigned represents and warrants as follows (each capitalized term used herein having the same meaning given to it in the Agreement unless otherwise specified); 

(a) [There currently does not exist any Default under the Agreement.] [Attached hereto is a schedule specifying the details of [a] certain
Default[s] which exist under the Agreement and the action taken or proposed to be taken with respect thereto.] 
 (b) Attached hereto are the
detailed computations necessary to determine whether the Borrower is in compliance with Section 6.07[(a)]1[(b)]2 of the
Agreement as of the end of the [fiscal quarter][fiscal year] ending                     . 

EXECUTED AND DELIVERED this      day of             ,
20    . 
  

			
	[WILLIAMS PARTNERS L.P.
		
	By:		WPZ GP LLC
			its General Partner]
	[NORTHWEST PIPELINE LLC]
	[TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC]
		
	By:		  

			Name:
			Title:

  

	1 	Use for Compliance Certificate of WPZ 

	2 	Use for Compliance Certificate of Borrowers other than WPZ 

  
 1 

 EXHIBIT E 

FORM OF [AMENDED AND RESTATED] NOTE 
  

			
	$        	  	            , 20    

 [ACCESS MIDSTREAM PARTNERS, L.P., a Delaware limited partnership][NORTHWEST PIPELINE LLC, a Delaware limited
liability company] [TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC, a Delaware limited liability company] (the “Borrower”), for value received, promises and agrees to pay to
                                        (the
“Lender”), or order, at the payment office of CITIBANK, N.A., as Administrative Agent, at 2 Penns Way, Suite 200, New Castle, Delaware 19720, the principal sum of
                                        AND
NO/100 DOLLARS ($        ), or such lesser amount as shall equal the aggregate unpaid principal amount of the Loans owed to the Lender under the Credit Agreement, as hereafter defined, in lawful money of the
United States of America and in immediately available funds, on the dates and in the principal amounts provided in the Credit Agreement, and to pay interest on the unpaid principal amount as provided in the Credit Agreement for such Loans, at such
office, in like money and funds, for the period commencing on the date of each such Loan until such Loan shall be paid in full, at the rates per annum and on the dates provided in the Credit Agreement. 

This [Amended and Restated] Note (the “Note”) evidences the Loans owed to the Lender under that certain Second
Amended & Restated Credit Agreement dated as of February 2, 2015, by and among Access Midstream Partners, L.P., Northwest Pipeline LLC, Transcontinental Gas Pipe Line Company, LLC, Citibank, N.A., individually, as Administrative Agent
(the “Administrative Agent”) and Issuing Bank, and the other financial institutions parties thereto (including the Lender) (such Second Amended & Restated Credit Agreement, together with all amendments or supplements
thereto, being the “Credit Agreement”), and shall be governed by the Credit Agreement. Capitalized terms used in this note and not defined in this note, but which are defined in the Credit Agreement, have the respective meanings
herein as are assigned to them in the Credit Agreement. 
 The Lender is hereby authorized by the Borrower to endorse on Schedule A
(or a continuation thereof) attached to this Note, the Type of each Loan owed to the Lender, the amount and date of each payment or prepayment of principal of each such Loan received by the Lender and the Interest Periods and interest rates
applicable to each Loan, provided that any failure by the Lender to make any such endorsement shall not affect the obligations of the Borrower under the Credit Agreement or under this Note in respect of such Loans. 

This Note may be held by the Lender for the account of its applicable lending office and, except as otherwise provided in the Credit
Agreement, may be transferred from one lending office of the Lender to another lending office of the Lender from time to time as the Lender may determine. 

Except only for any notices which are specifically required by the Credit Agreement, the Borrower and any and all co-makers, endorsers,
guarantors and sureties severally waive notice (including but not limited to notice of intent to accelerate and notice of acceleration, notice of 

  
 1 

 
protest and notice of dishonor), demand, presentment for payment, protest, diligence in collecting and the filing of suit for the purpose of fixing liability, and consent that the time of payment
hereof may be extended and re-extended from time to time without notice to any of them. Each such person agrees that its liability on or with respect to this Note shall not be affected by any release of or change in any guaranty or security at any
time existing or by any failure to perfect or maintain perfection of any lien against or security interest in any such security or the partial or complete unenforceability of any guaranty or other surety obligation, in each case in whole or in part,
with or without notice and before or after maturity. 
 The Credit Agreement provides for the acceleration of the maturity of this Note upon
the occurrence of certain events and for prepayment of Loans upon the terms and conditions specified therein. Reference is made to the Credit Agreement for all other pertinent purposes. 

This Note is issued pursuant to and is entitled to the benefits of the Credit Agreement. 

[It is hereby understood and agreed that WPZ GP LLC, the general partner of the Borrower, shall have no personal liability, as general partner
or otherwise, for the payment of any amount owing or to be owing hereunder. Notwithstanding the foregoing, nothing in this Note shall be construed to modify or supersede any obligation of WPZ GP LLC, as general partner of the Borrower, to restore
any negative balance in its capital account (maintained by the Borrower pursuant to the Partnership Agreement) upon liquidation of its interest in the Borrower.] 

THIS NOTE SHALL BE CONSTRUED IN
ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF
NEW YORK AND THE UNITED STATES OF AMERICA FROM TIME TO TIME
IN EFFECT. 
 This Note and the other Loan Documents represent the final agreement among the parties and may
not be contradicted by evidence of prior, contemporaneous, or subsequent oral agreements of the parties. There are no unwritten oral agreements among the parties. 

[This Note amends and restates that certain Note dated as of
[                    ] made by the Borrower in favor of Payee in the original principal amount of $[        ]
(the “Existing Note”) and constitutes a replacement and substitute for the Existing Note. The indebtedness evidenced by the Existing Note is, without duplication, a continuing indebtedness and nothing herein shall be deemed to
constitute a payment, settlement or novation of the Existing Note.] 
 [Remainder of page intentionally left blank] 

  
 2 

 
			
	[ACCESS MIDSTREAM PARTNERS, L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner]
	[NORTHWEST PIPELINE LLC]
	[TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC]
		
	By:	 	  

		 	Name:
		 	Title:

 [Signature Page to Note] 

 TO 

[AMENDED AND RESTATED] NOTE 
 This [Amended
and Restated] Note evidences the Loans owed to the Lender under the Credit Agreement, in the principal amount set forth below and the applicable Interest Periods and rates for each such Loan, subject to the payments of principal set forth below:

 SCHEDULE 
 OF 

LOANS AND PAYMENTS OF PRINCIPAL AND INTEREST 
  

															
	Date	  	 Interest

Period
	  	Rate	  	Principal
Amount of
Loan	  	Amount of
Principal
Paid or
Prepaid	  	 Interest

Paid
	  	 Balance

of
 Loans
	  	 Notation
Made

by

								
		  		  		  		  		  		  		  	
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

	     
														
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  

 EXHIBIT F-1 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Lenders That Are Not Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as the same may be
amended, supplemented or otherwise modified from time to time, the “Credit Agreement”), among Williams Partners L.P., Northwest Pipeline LLC, and Transcontinental Gas Pipe Line Company, LLC (each a “Borrower”),
Citibank, N.A., and the other financial institutions named herein or in Assignment and Assumption Agreements, in their capacities as Lenders, and Citibank, N.A., in its capacity as Agent. Capitalized terms used but not defined herein shall have the
meanings given to such terms in the Credit Agreement. 
 Pursuant to the provisions of Section 2.17 of the Credit Agreement, the
undersigned hereby certifies that (i) it is the sole record and beneficial owner of the Loan(s) in respect of which it is providing this certificate, (ii) it is not a bank within the meaning of Section 881(c)(3)(A) of the Code,
(iii) it is not a ten percent shareholder of any Borrower within the meaning of Section 871(h)(3)(B) of the Code and (iv) it is not a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of
the Code. 
 The undersigned has furnished the Agent and the Borrowers with a certificate of its status as not a United States person (as
defined in section 7701(a)(30) of the Code) on IRS Form W-8BEN or W-8BEN-E. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform the
Borrowers and the Agent, and (2) the undersigned shall have at all times furnished the Borrowers and the Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the
undersigned, or in either of the two calendar years preceding such payments. 
  

			
	[NAME OF LENDER]
		
	By:		  

			Name:
			Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-2 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Participants That Are Not Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as the same may be
amended, supplemented or otherwise modified from time to time, the “Credit Agreement”), among Williams Partners L.P., Northwest Pipeline LLC and Transcontinental Gas Pipe Line Company, LLC (each a “Borrower”),
Citibank, N.A. and the other financial institutions named herein or in Assignment and Assumption Agreements, in their capacities as Lenders, and Citibank, N.A., in its capacity as Agent. Capitalized terms used but not defined herein shall have the
meanings given to such terms in the Loan Agreement. 
 Pursuant to the provisions of Section 2.17 of the Credit Agreement, the
undersigned hereby certifies that (i) it is the sole record and beneficial owner of the participation in respect of which it is providing this certificate, (ii) it is not a bank within the meaning of Section 881(c)(3)(A) of the Code,
(iii) it is not a ten percent shareholder of any Borrower within the meaning of Section 871(h)(3)(B) of the Code, and (iv) it is not a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of
the Code. 
 The undersigned has furnished its participating Lender with a certificate of its status as not a United States person (as
defined in section 7701(a)(30) of the Code) on IRS Form W-8BEN or W-8BEN-E. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such
Lender in writing, and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in
either of the two calendar years preceding such payments. 
  

			
	[NAME OF PARTICIPANT]
		
	By:		  

			Name:
			Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-3 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Participants That Are Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as the same may be
amended, supplemented or otherwise modified from time to time, the “Credit Agreement”), among Williams Partners L.P., Northwest Pipeline LLC and Transcontinental Gas Pipe Line Company, LLC (each a “Borrower”),
Citibank, N.A. and the other financial institutions named herein or in Assignment and Assumption Agreements, in their capacities as Lenders, and Citibank, N.A., in its capacity as Agent. Capitalized terms used but not defined herein shall have the
meanings given to such terms in the Loan Agreement. 
 Pursuant to the provisions of Section 2.17 of the Credit Agreement, the
undersigned hereby certifies that (i) it is the sole record owner of the participation in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation,
(iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members is a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the
meaning of Section 881(c)(3)(A) of the Code, (iv) none of its direct or indirect partners/members is a ten percent shareholder of any Borrower within the meaning of Section 871(h)(3)(B) of the Code and (v) none of its direct or
indirect partners/members is a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 

The undersigned has furnished its participating Lender with IRS Form W-8IMY accompanied by one of the following forms from each of its
partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or W-8BEN-E or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN or W-8BEN-E from each of such partner’s/member’s beneficial
owners that is claiming the portfolio interest exemption. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender and
(2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar
years preceding such payments. 
  

			
	[NAME OF PARTICIPANT]
		
	By:		  

			Name:
			Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-4 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Lenders That Are Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Second Amended & Restated Credit Agreement dated as of February 2, 2015 (as the same may be
amended, supplemented or otherwise modified from time to time, the “Credit Agreement”), among Williams Partners L.P., Northwest Pipeline LLC and Transcontinental Gas Pipe Line Company, LLC (each a “Borrower”),
Citibank, N.A. and the other financial institutions named herein or in Assignment and Assumption Agreements, in their capacities as Lenders, and Citibank, N.A., in its capacity as Agent. Capitalized terms used but not defined herein shall have the
meanings given to such terms in the Loan Agreement. 
 Pursuant to the provisions of Section 2.17 of the Credit Agreement, the
undersigned hereby certifies that (i) it is the sole record owner of the Loan(s) in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such Loan(s),
(iii) with respect to the extension of credit pursuant to this Credit Agreement or any other Loan Document, neither the undersigned nor any of its direct or indirect partners/members is a bank extending credit pursuant to a loan agreement
entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iv) none of its direct or indirect partners/members is a ten percent shareholder of any Borrower within the meaning of
Section 871(h)(3)(B) of the Code and (v) none of its direct or indirect partners/members is a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 

The undersigned has furnished the Agent and the Borrowers with IRS Form W-8IMY accompanied by one of the following forms from each of its
partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or W-8BEN-E or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN or W-8BEN-E from each of such partner’s/member’s beneficial
owners that is claiming the portfolio interest exemption. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform the Borrowers and the
Agent, and (2) the undersigned shall have at all times furnished the Borrowers and the Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in
either of the two calendar years preceding such payments. 
  

			
	[NAME OF LENDER]
		
	By:		  

			Name:
			Title:
	
	Date:                  , 20[    ]

  
 1EX-10.2

 Exhibit 10.2 

EXECUTION VERSION 
  

 
  

CREDIT AGREEMENT 
 dated as
of 
 February 3, 2015 
 among

 WILLIAMS PARTNERS L.P. 

as Borrower 
 The Lenders Party
Hereto 
 and 
 BARCLAYS BANK
PLC, 
 as Administrative Agent 
  

 
  

 TABLE OF CONTENTS 

 

									
	 	 	 	  	Page	 
		
	 ARTICLE I DEFINITIONS AND ACCOUNTING TERMS
	  	 	1	  
				
		 	 Section 1.01
	 	 Defined Terms
	  	 	1	  
		 	 Section 1.02
	 	 Classification of Loans and Borrowings
	  	 	26	  
		 	 Section 1.03
	 	 Terms Generally
	  	 	26	  
		 	 Section 1.04
	 	 Accounting Terms; GAAP
	  	 	27	  
		
	 ARTICLE II THE CREDITS
	  	 	27	  
				
		 	 Section 2.01
	 	 Commitments
	  	 	27	  
		 	 Section 2.02
	 	 Loans and Borrowings
	  	 	27	  
		 	 Section 2.03
	 	 Requests for Borrowings
	  	 	28	  
		 	 Section 2.04
	 	 Extension of Maturity Date
	  	 	28	  
		 	 Section 2.05
	 	 [Reserved]
	  	 	29	  
		 	 Section 2.06
	 	 [Reserved]
	  	 	29	  
		 	 Section 2.07
	 	 Funding of Borrowings
	  	 	29	  
		 	 Section 2.08
	 	 Interest Elections
	  	 	29	  
		 	 Section 2.09
	 	 Termination and Reduction of Commitments
	  	 	31	  
		 	 Section 2.10
	 	 Repayment of Loans; Evidence of Debt
	  	 	32	  
		 	 Section 2.11
	 	 Prepayment of Loans
	  	 	32	  
		 	 Section 2.12
	 	 Fees
	  	 	33	  
		 	 Section 2.13
	 	 Interest
	  	 	34	  
		 	 Section 2.14
	 	 Alternate Rate of Interest
	  	 	35	  
		 	 Section 2.15
	 	 Increased Costs
	  	 	35	  
		 	 Section 2.16
	 	 Break Funding Payments
	  	 	36	  
		 	 Section 2.17
	 	 Taxes
	  	 	37	  
		 	 Section 2.18
	 	 Payments Generally; Pro Rata Treatment; Sharing of Set-offs
	  	 	40	  
		 	 Section 2.19
	 	 Mitigation Obligations; Replacement of Lenders
	  	 	42	  
		 	 Section 2.20
	 	 [Reserved]
	  	 	43	  
		
	 ARTICLE III REPRESENTATIONS AND WARRANTIES
	  	 	43	  
				
		 	 Section 3.01
	 	 Organization; Powers
	  	 	43	  
		 	 Section 3.02
	 	 Authorization; Enforceability
	  	 	43	  
		 	 Section 3.03
	 	 Governmental Approvals; No Conflicts
	  	 	43	  
		 	 Section 3.04
	 	 Financial Condition
	  	 	44	  
		 	 Section 3.05
	 	 Litigation
	  	 	44	  
		 	 Section 3.06
	 	 Environmental Matters
	  	 	44	  
		 	 Section 3.07
	 	 Disclosure
	  	 	45	  
		 	 Section 3.08
	 	 Solvency
	  	 	45	  
		 	 Section 3.09
	 	 ERISA
	  	 	45	  
		 	 Section 3.10
	 	 Investment Company Status
	  	 	45	  
		 	 Section 3.11
	 	 Margin Securities
	  	 	45	  
		 	 Section 3.12
	 	 Sanctions; Anti-Corruption; Money Laundering and Counter-Terrorist Financing Laws
	  	 	45	  

  
 i 

 TABLE OF CONTENTS 

(continued) 
  

									
	 	 	 	  	Page	 
		
	 ARTICLE IV CONDITIONS
	  	 	46	  
				
		 	 Section 4.01
	 	 Effective Date
	  	 	46	  
		 	 Section 4.02
	 	 Each Credit Event
	  	 	47	  
		 	 Section 4.03
	 	 [Reserved]
	  	 	48	  
		
	 ARTICLE V AFFIRMATIVE COVENANTS
	  	 	48	  
				
		 	 Section 5.01
	 	 Financial Statements and Other Information
	  	 	48	  
		 	 Section 5.02
	 	 Notices of Material Events
	  	 	49	  
		 	 Section 5.03
	 	 Existence; Conduct of Business
	  	 	50	  
		 	 Section 5.04
	 	 Payment of Obligations
	  	 	51	  
		 	 Section 5.05
	 	 Maintenance of Properties; Insurance
	  	 	51	  
		 	 Section 5.06
	 	 Books and Records; Inspection Rights
	  	 	51	  
		 	 Section 5.07
	 	 Compliance with Laws
	  	 	51	  
		 	 Section 5.08
	 	 Use of Proceeds
	  	 	51	  
		 	 Section 5.09
	 	 Potential Subsidiary Guarantors
	  	 	51	  
		 	 Section 5.10
	 	 [Reserved]
	  	 	52	  
		
	 ARTICLE VI NEGATIVE COVENANTS
	  	 	52	  
				
		 	 Section 6.01
	 	 Liens
	  	 	52	  
		 	 Section 6.02
	 	 Fundamental Changes
	  	 	52	  
		 	 Section 6.03
	 	 Restricted Payments
	  	 	53	  
		 	 Section 6.04
	 	 Restrictive Agreements
	  	 	53	  
		 	 Section 6.05
	 	 Affiliate Transactions
	  	 	54	  
		 	 Section 6.06
	 	 Change in Nature of Businesses
	  	 	55	  
		 	 Section 6.07
	 	 Financial Condition Covenants
	  	 	55	  
		
	 ARTICLE VII EVENTS OF DEFAULT
	  	 	56	  
		
	 ARTICLE VIII THE ADMINISTRATIVE AGENT
	  	 	59	  
				
		 	 Section 8.01
	 	 Appointment and Authority
	  	 	59	  
		 	 Section 8.02
	 	 Administrative Agent Individually
	  	 	59	  
		 	 Section 8.03
	 	 Duties of Administrative Agent; Exculpatory Provisions
	  	 	60	  
		 	 Section 8.04
	 	 Reliance by Administrative Agent
	  	 	61	  
		 	 Section 8.05
	 	 Delegation of Duties
	  	 	61	  
		 	 Section 8.06
	 	 Resignation of Administrative Agent
	  	 	61	  
		 	 Section 8.07
	 	 Non-Reliance on Administrative Agent and Other Lenders
	  	 	62	  
		
	 ARTICLE IX MISCELLANEOUS
	  	 	64	  
				
		 	 Section 9.01
	 	 Notices
	  	 	64	  
		 	 Section 9.02
	 	 Posting of Approved Electronic Communications
	  	 	65	  

  
 ii 

 TABLE OF CONTENTS 

(continued) 
  

									
	 	 	 	 	 	  	Page	 
				
		 	 Section 9.03
	 	 Waivers; Amendments
	  	 	66	  
		 	 Section 9.04
	 	 Expenses; Indemnity; Damage Waiver
	  	 	67	  
		 	 Section 9.05
	 	 Successors and Assigns
	  	 	68	  
		 	 Section 9.06
	 	 Survival
	  	 	71	  
		 	 Section 9.07
	 	 Counterparts; Integration; Effectiveness
	  	 	72	  
		 	 Section 9.08
	 	 Severability
	  	 	72	  
		 	 Section 9.09
	 	 Right of Setoff
	  	 	72	  
		 	 Section 9.10
	 	 Governing Law; Jurisdiction; Consent to Service of Process
	  	 	72	  
		 	 Section 9.11
	 	 WAIVER OF JURY TRIAL
	  	 	73	  
		 	 Section 9.12
	 	 Headings
	  	 	73	  
		 	 Section 9.13
	 	 Confidentiality
	  	 	73	  
		 	 Section 9.14
	 	 Treatment of Information
	  	 	74	  
		 	 Section 9.15
	 	 Interest Rate Limitation
	  	 	76	  
		 	 Section 9.16
	 	 No Waiver; Remedies
	  	 	76	  
		 	 Section 9.17
	 	 Liability of General Partner
	  	 	76	  
		 	 Section 9.18
	 	 USA Patriot Act Notice
	  	 	76	  
		 	 Section 9.19
	 	 No Advisory or Fiduciary Responsibility
	  	 	77	  
		 	 Section 9.20
	 	 GP Buy-in
	  	 	77	  
		 	 Section 9.21
	 	 Merger
	  	 	78	  

  

					
	SCHEDULES:	 		  	
	Schedule 2.01	 	-	  	Commitments of Revolving Lenders
	Schedule 6.04	 	-	  	Restrictive Agreements

  

					
	EXHIBITS:	 		  	
			
	Exhibit A	 	-	  	Form of Assignment and Acceptance
	Exhibit B	 	-	  	Form of Borrowing Request
	Exhibit C	 	-	  	Form of Interest Election Request
	Exhibit D	 	-	  	Form of Compliance Certificate
	Exhibit E	 	-	  	Form of Note
	Exhibit F	 	-	  	Form of U.S. Tax Compliance Certificate

  
 iii 

 CREDIT AGREEMENT 

This Credit Agreement dated as of February 3, 2015 (as amended, restated, supplemented or otherwise modified from time to time, the
“Agreement”), is among WILLIAMS PARTNERS L.P., a Delaware limited partnership (“WPZ” or “Borrower”) the LENDERS party hereto, and BARCLAYS BANK PLC, as Administrative Agent. 

The parties hereto agree as follows: 

ARTICLE I 
 DEFINITIONS
AND ACCOUNTING TERMS 
 Section 1.01 Defined Terms. As used in this Agreement, the following terms have the meanings
specified below: 
 “ABR”, when used in reference to any Loan or Borrowing, refers to a Loan, or Loans, in the case of a
Borrowing, which bear interest at a rate determined by reference to the Alternate Base Rate. 
 “Acquisition Adjustment
Period” means (i) initially, the period commencing on the Effective Date and ending on the earlier of (a) the last day of the second fiscal quarter next succeeding the fiscal quarter in which the Effective Date occurred; or
(b) WPZ’s election to terminate such Acquisition Adjustment Period, such election to be exercised by WPZ delivering notice thereof to the Administrative Agent and (ii) thereafter, a period elected by WPZ, such election to be exercised
by WPZ by delivering notice thereof to the Administrative Agent, beginning with the funding date of the purchase price for any Specified Acquisition and ending on the earlier of (a) the last day of the second fiscal quarter next succeeding the
fiscal quarter in which the Specified Acquisition was consummated; or (b) WPZ’s election to terminate such Acquisition Adjustment Period, such election to be exercised by WPZ delivering notice thereof to the Administrative Agent. 

“Activities” has the meaning specified in Section 8.02(b). 

“ACMP Merger” means the transactions contemplated by the Agreement and Plan of Merger dated as of October 24, 2014, by
and among Access Midstream Partners, L.P., a Delaware limited partnership, Access Midstream Partners GP, L.L.C., VHMS LLC, Williams Partners L.P. and Williams Partners GP LLC. 

“Administrative Agent” means Barclays Bank PLC, in its capacity as administrative agent for the Lenders hereunder. 

“Administrative Questionnaire” means an Administrative Questionnaire in a form supplied by the Administrative Agent. 

“Affiliate” means, with respect to a specified Person, another Person that directly, or indirectly through one or more
intermediaries, Controls or is Controlled by or is under common Control with the Person specified. 
 “Agent’s Group”
has the meaning specified in Section 8.02(b). 

 “Aggregate Commitments” means the aggregate amount of all of the Revolving
Lenders’ Commitments. The Aggregate Commitments as of the Effective Date are $1,500,000,000. 
 “Aggregate Outstanding Credit
Exposure” means, at any time, the aggregate of the outstanding Credit Exposures of all the Revolving Lenders at such time. 

“Alternate Base Rate” means, for any day, a rate per annum equal to the greatest of (a) the Prime Rate in effect on such
day, (b) the Federal Funds Effective Rate in effect on such day plus  1⁄2 of 1% and (c) the LIBO Rate for a one month Interest Period that
begins on such day (and if such day is not a Business Day, the immediately preceding Business Day) plus 1%. Any change in the Alternate Base Rate due to a change in the Prime Rate, the Federal Funds Effective Rate or the LIBO Rate shall be effective
from and including the effective date of such change in the Prime Rate or the Federal Funds Effective Rate, respectively. 

“Applicable Percentage” means, with respect to any Revolving Lender, the percentage of the Aggregate Commitments represented
by such Lender’s Commitment. If the Aggregate Commitments have terminated or expired, the Applicable Percentages shall be determined based upon the Aggregate Commitments most recently in effect, giving effect to any assignments. 

“Applicable Rate” means 

(1) for any day prior to the Extension Effective Date (a) with respect to the Loans made to the Borrower, the applicable rate per annum
set forth below under the caption “Eurodollar Spread” for Loans comprising Eurodollar Borrowings or “ABR Spread” for Loans comprising ABR Borrowings, as the case may be, based upon the ratings by Moody’s and S&P,
respectively, applicable on such date to the Index Debt for the Borrower, or (b) with respect to the commitment fees payable hereunder, the rate per annum set forth below under the caption “Commitment Rate” based upon the ratings by
Moody’s and S&P, respectively, applicable on such date to the Index Debt for the Borrower. 
  

													
	 Index Debt Ratings:

(S&P/Moody’s)
	  	Eurodollar
Spread	 	 	ABR Spread	 	 	Commitment
Rate	 
	 Category 1 3 BBB+ / Baa1
	  	 	1.125	% 	 	 	0.125	% 	 	 	0.125	% 
	 Category 2 BBB / Baa2
	  	 	1.250	% 	 	 	0.250	% 	 	 	0.175	% 
	 Category 3 BBB- / Baa3
	  	 	1.500	% 	 	 	0.500	% 	 	 	0.200	% 
	 Category 4 BB+ / Ba1
	  	 	1.625	% 	 	 	0.625	% 	 	 	0.275	% 
	 Category 5 £ BB / Ba2
	  	 	1.750	% 	 	 	0.750	% 	 	 	0.300	% 

 (2) for any day on or after the Extension Effective Date (a) with respect to the Loans made to the
Borrower, the applicable rate per annum set forth below under the caption “Eurodollar Spread” for Loans comprising Eurodollar Borrowings or “ABR Spread” for Loans comprising ABR 

  
 2 

 
Borrowings, as the case may be, based upon the ratings by Moody’s and S&P, respectively, applicable on such date to the Index Debt for the Borrower, or (b) with respect to the
commitment fees payable hereunder, the rate per annum set forth below under the caption “Commitment Rate” based upon the ratings by Moody’s and S&P, respectively, applicable on such date to the Index Debt for the Borrower. 

 

													
	 Index Debt Ratings:

(S&P/Moody’s)
	  	Eurodollar
Spread	 	 	ABR Spread	 	 	Commitment
Rate	 
	 Category 1 3 BBB+ / Baa1
	  	 	1.625	% 	 	 	0.625	% 	 	 	0.125	% 
	 Category 2 BBB / Baa2
	  	 	1.750	% 	 	 	0.750	% 	 	 	0.175	% 
	 Category 3 BBB- / Baa3
	  	 	2.000	% 	 	 	1.000	% 	 	 	0.200	% 
	 Category 4 BB+ / Ba1
	  	 	2.125	% 	 	 	1.125	% 	 	 	0.275	% 
	 Category 5 £ BB / Ba2
	  	 	2.250	% 	 	 	1.250	% 	 	 	0.300	% 

 For purposes of the foregoing (i) if only one of Moody’s and S&P shall have in effect a rating for the Index
Debt, then the other rating agency shall be deemed to have established a rating in the same Category as such agency; (ii) if each of Moody’s and S&P shall have in effect a rating for the Index Debt, and such ratings shall fall within
different Categories, the Applicable Rate shall be based on (A) if the difference is one Category, the higher of the two ratings, and (B) if the difference is more than one Category, the rating one Category below the higher of the two
ratings; and (iii) if the ratings established or deemed to have been established by Moody’s and S&P for the Index Debt shall be changed (other than as a result of a change in the rating system of Moody’s or S&P), such change
shall be effective as of the date on which it is first announced by the applicable rating agency. Each change in the Applicable Rate shall apply during the period commencing on the effective date of such change and ending on the date immediately
preceding the effective date of the next such change. If neither Moody’s nor S&P shall have in effect a rating for the Index Debt, then the ratings for the Index Debt shall be deemed to fall within Category 5. If the rating system of
Moody’s or S&P shall change, or if any such rating agency shall cease to be in the business of rating corporate debt obligations, the Borrower and the Lenders shall negotiate in good faith to amend this definition to reflect such changed
rating system or the unavailability of ratings from such rating agency and, pending the effectiveness of any such amendment, the Applicable Rate shall be determined by reference to the rating most recently in effect prior to such change or
cessation. 
 “Approved Electronic Communications” means each Communication that the Borrower is obligated to, or otherwise
chooses to, provide to the Administrative Agent pursuant to any Loan Document or the transactions contemplated therein, including any financial statement, financial and other report, notice, request, certificate and other information material. 

“Approved Electronic Platform” has the meaning specified in Section 9.02. 

  
 3 

 “Approved Fund” means any Fund that is administered or managed by (a) a
Lender, (b) an Affiliate of a Lender or (c) an entity or an Affiliate of an entity that administers or manages a Lender. 

“Asset Sale” means, with respect to any property or asset of any Person, any sale, assignment or other disposition of such
property or asset, including the sale or issuance of any Capital Stock in any Subsidiary. 
 “Assignment and Acceptance”
means an assignment and assumption entered into by a Lender and an Eligible Assignee (with the consent of any party whose consent is required by Section 9.05), and accepted by the Administrative Agent, substantially in the form of
Exhibit A or any other form approved by the Administrative Agent. 
 “Attributable Obligation” of any Person
means, with respect to any Sale and Leaseback Transaction of such Person as of any particular time, the present value at such time discounted at the rate of interest implicit in the terms of the lease of the obligations of the lessee under such
lease for net rental payments during the remaining term of the lease (including any period for which such lease has been extended or may, at the option of such Person only, be extended). 

“Availability Period” means the period from and including the Effective Date to but excluding the earlier of the Maturity
Date and the date of termination of the Aggregate Commitments. 
 “Bankruptcy Code” means Title 11 of the United States
Code, as now or hereafter in effect, or any successor thereto. 
 “Beneficial Owner” has the meaning assigned to such term
in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” will be deemed
to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only upon the occurrence of a
subsequent condition. The terms “Beneficially Owns” and “Beneficially Owned” have correlative meanings. 

“Borrower” has the meaning specified in the first paragraph hereof. 

“Borrowing” means Loans of the same Type, made, converted or continued on the same date and, in the case of Eurodollar Loans,
as to which a single Interest Period is in effect. 
 “Borrowing Request” means a request by the Borrower for a Borrowing
in accordance with Section 2.03, and being in the form of attached Exhibit B. 
 “Business Day” means
any day that is not a Saturday, Sunday or other day on which commercial banks in New York City are authorized or required by law to remain closed; provided that, when used in connection with a Eurodollar Loan, the term “Business
Day” shall also exclude any day on which banks are not open for dealings in dollar deposits in the London interbank market. 

  
 4 

 “Capital Lease Obligations” of any Person means the obligations of such Person
to pay rent or other amounts under any lease of real or personal property, or a combination thereof, which obligations are required under GAAP to be classified and accounted for as capital leases on a balance sheet of such Person, and the amount of
such obligations shall be the capitalized amount thereof determined in accordance with GAAP; provided that (a) any lease that was treated as an operating lease under GAAP at the time it was entered into that later becomes a capital lease
as a result of a change in GAAP during the life of such lease, including any renewals, and (b) any lease entered into after the date of this Agreement that would have been considered an operating lease under the provisions of GAAP in effect as
of December 31, 2014, in each case, shall be treated as an operating lease for all purposes under this Agreement. 
 “Capital
Stock” means: 
 (a) in the case of a corporation, corporate stock; 

(b) in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however
designated) of corporate stock; 
 (c) in the case of a partnership or limited liability company, partnership or membership interests
(whether general or limited); and 
 (d) any other interest or participation that confers on a Person the right to receive a share of the
profits and losses of, or distributions of assets of, the issuing Person. 
 “Change in Control” means the occurrence of
any of the following: 
 (a) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or
consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the General Partner to any “person” (as that term is used in Section 13(d)(3) of the Exchange Act), other than
Williams or one of its other Subsidiaries; 
 (b) the adoption of a plan relating to the liquidation or dissolution of WPZ or the General
Partner; 
 (c) any Person other than Williams or any of its Subsidiaries becomes the Beneficial Owner, directly or indirectly, of 50% or
more of the Voting Stock of the General Partner; or 
 (d) the first day on which a majority of the members of the Board of Directors of the
General Partner are not Continuing Directors. 
 “Change in Law” means the occurrence, after the date of this Agreement, of
any of the following: (a) the adoption of any law, rule, regulation or treaty, (b) any change in any law, rule, regulation or treaty or in the administration, interpretation, implementation or application thereof by any Governmental
Authority or (c) the making or issuance of, and compliance by the relevant Lender with, any request, guideline or directive (whether or not having the force of law) by any Governmental Authority; provided that notwithstanding anything
herein to the contrary, (x) the Dodd-Frank Wall Street Reform and Consumer Protection Act and all requests, rules, guidelines or directives thereunder or issued in connection therewith and (y) all requests, rules, guidelines or

  
 5 

 
directives promulgated by the Bank for International Settlements, the Basel Committee on Banking Supervision (or any successor or similar authority) or the United States or foreign regulatory
authorities, in each case pursuant to Basel III, shall in each case be deemed to be a “Change in Law”, regardless of the date enacted, adopted or issued. 

“Closing Date” means February 3, 2015. 

“Code” means the Internal Revenue Code of 1986, as amended from time to time. 

“Commercial Operation Date” means the date on which a Material Project is substantially complete and commercially operable.

 “Commitment” means, with respect to any Revolving Lender, the commitment of such Lender to make Loans, expressed as an
amount representing the maximum aggregate amount of such Lender’s Credit Exposure hereunder, as such commitment may be (a) reduced from time to time pursuant to Section 2.09 and (b) increased from time to time pursuant to
assignments by or to such Lender pursuant to Section 9.05. The initial amount of each Revolving Lender’s Commitment is set forth on Schedule 2.01, or in the Assignment and Acceptance pursuant to which such Lender shall have
assumed its Commitment, as applicable. 
 “Communications” means each notice, demand, communication, information, document
and other material provided for hereunder or under any other Loan Document or otherwise transmitted between the parties hereto relating to this Agreement, the other Loan Documents, the Borrower or its Affiliates, or the transactions contemplated by
this Agreement or the other Loan Documents including, without limitation, all Approved Electronic Communications. 
 “Consolidated
EBITDA” means, for any period (without duplication) and for any Person, consolidated net income of such Person and its consolidated Subsidiaries for such period, plus (a) each of the following to the extent deducted in determining such
consolidated net income (i) all Consolidated Interest Expense, (ii) all income Taxes and franchise Taxes of such Person and its consolidated Subsidiaries for such period, (iii) all depreciation, depletion and amortization (including
amortization of goodwill and debt issuance costs) of such Person and its consolidated Subsidiaries for such period, (iv) any other non-cash charges or losses of such Person and its consolidated Subsidiaries for such period, including asset
impairments, write-downs or write-offs, (v) the amount of charges, fees or expenses associated with any debt, including in connection with the repurchase or repayment thereof, including any premium and acceleration of fees or discounts and
other expenses and (vi) extraordinary or non-recurring losses, plus (b) the amount of cash dividends actually received during such period by such Person on a consolidated basis from unconsolidated Subsidiaries of such Person or other
Persons (provided that any such cash dividends actually received within thirty days after the last day of any fiscal quarter attributable to operations during such prior fiscal quarter shall be deemed to have been received during such prior
fiscal quarter and not in the fiscal quarter actually received) minus (c) each of the following (i) all non-cash items of income or gain of such Person and its consolidated Subsidiaries which were included in determining such consolidated
net income for such period, (ii) any cash payments made during such period in respect of items described in clause (a)(iv) above subsequent to the fiscal quarter in which the relevant non-cash charges or losses were reflected as a charge in
determining consolidated net income hereunder, (iii) equity earnings from unconsolidated Subsidiaries of such Person and (iv) extraordinary or non-recurring gains. Consolidated EBITDA shall be subject to the adjustments set forth in the
following clauses (A) through (C) for all purposes under this Agreement: 
 (A) If, during the four fiscal quarter period ending
on the date for which Consolidated EBITDA is determined, such Person, any Subsidiary of such Person or any entity with respect to which such Person holds an equity method investment shall have made any acquisition of assets, shall have consolidated
or merged with or into any Person, or shall have made an acquisition of any Person, Consolidated EBITDA may, at such Person’s option, be calculated giving pro forma effect thereto, without duplication, as if the acquisition, consolidation or
merger had occurred on the first day of such period. Such pro forma effect shall be determined in good faith by a Financial Officer of such Person. 

  
 6 

 (B) Consolidated EBITDA shall be increased by the amount of any applicable Material Project
EBITDA Adjustments applicable to such period. 
 (C) Consolidated EBITDA of WPZ for the four fiscal quarter periods ended December 31,
2014 and March 31, 2015 shall, without duplication, be increased by Consolidated EBITDA of Pre-Merger WPZ for such four fiscal quarter periods, as reasonably determined in good faith by a Financial Officer of WPZ. 

“Consolidated Indebtedness” means, with respect to any Person, the Indebtedness of such Person and its consolidated
Subsidiaries determined on a consolidated basis as of such date; provided that “Consolidated Indebtedness” with respect to WPZ as of December 31, 2014 shall be increased by the amount of Consolidated Indebtedness of Pre-Merger
WPZ as of such date. 
 “Consolidated Interest Expense” means, for any period, for any Person, all interest paid or accrued
during such period by such Person and its consolidated Subsidiaries on, and all fees and related charges in respect of, Consolidated Indebtedness which was deducted in determining consolidated net income during such period. 

“Consolidated Net Tangible Assets” means, at any date of determination, the total amount of consolidated assets of WPZ and
its Subsidiaries after deducting therefrom: (a) all current liabilities (excluding (i) any current liabilities that by their terms are extendable or renewable at the option of the obligor thereon to a time more than 12 months after the
time as of which the amount thereof is being computed, and (ii) current maturities of long-term debt); and (b) the value (net of any applicable reserves and accumulated amortization) of all goodwill, trade names, trademarks, patents and
other like intangible assets, all as set forth, or on a pro forma basis would be set forth, on the consolidated balance sheet of WPZ and its Subsidiaries for the most recently completed fiscal quarter, prepared in accordance with GAAP. 

“Consolidated Net Worth” means as to any Person, at any date of determination, the sum of (a) preferred stock (if any),
(b) an amount equal to the face amount of outstanding Hybrid Securities not in excess of 15% of Consolidated Total Capitalization, (c) par value of common stock, (d) capital in excess of par value of common stock,
(e) partners’ capital or equity, and (f) retained earnings, less treasury stock (if any), of such Person, all as determined on a consolidated basis. 

“Consolidated Total Capitalization” means as to any Person, the sum of (a) Consolidated Indebtedness and (b) such
Person’s Consolidated Net Worth. 

  
 7 

 “Continuing Directors” means, as of any date of determination, any member of the
Board of Directors of the General Partner who: 
 (a) was a member of such Board of Directors on the date of this Agreement; or 

(b) was nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing Directors who were
members of such Board of Directors at the time of such nomination or election. 
 “Control” means the possession, directly
or indirectly, of the power to direct or cause the direction of the management or policies of a Person, whether through the ability to exercise voting power, by contract or otherwise. “Controlling” and “Controlled”
have meanings correlative thereto. 
 “Credit Exposure” means, with respect to any Revolving Lender at any time, the
outstanding principal amount of such Lender’s Loans. 
 “Default” means any event or condition which constitutes an
Event of Default or which upon notice, lapse of time or both would, unless cured or waived, become an Event of Default. 

“Defaulting Lender” means, at any time, a Revolving Lender as to which the Administrative Agent has notified WPZ that
(a) such Lender has failed for three or more Business Days to comply with its obligations under this Agreement to make a Loan, except for such failure being contested in good faith by appropriate proceedings (each a “funding
obligation”), (b) such Lender has notified the Administrative Agent, or has stated publicly, that it will not comply with any such funding obligation hereunder or generally under other agreements in which it extends credit,
(c) such Lender has, for three or more Business Days, failed to confirm in writing to the Administrative Agent, in response to a written request of the Administrative Agent or the Borrower, that it will comply with its funding obligations
hereunder (provided that such Lender shall cease to be a Defaulting Lender pursuant to this clause (c) upon receipt of such written confirmation by the Administrative Agent and the Borrower), or (d) a Lender Insolvency Event
has occurred and is continuing with respect to such Lender; provided, that (i) if a Lender would be a “Defaulting Lender” solely by reason of events relating to the Parent Company of such Lender or solely because a Governmental
Authority has been appointed as receiver, conservator, trustee or custodian for such Lender, in each case as described in clause (d) above, the Administrative Agent may, in its discretion, determine that such Lender is not a
“Defaulting Lender” if and for so long as the Administrative Agent is satisfied that such Lender will continue to perform its funding obligations hereunder, (ii) the Administrative Agent may, by notice to the Borrower and the Lenders,
declare that a Defaulting Lender is no longer a “Defaulting Lender” if the Administrative Agent determines, in its discretion, that the circumstances that resulted in such Lender becoming a “Defaulting Lender” no longer apply and
(iii) a Lender shall not be a Defaulting Lender solely by virtue of the ownership or acquisition of Voting Stock or any other Equity Interest in such Lender or a Parent Company thereof or the exercise of any voting rights in connection
therewith by a Governmental Authority or an instrumentality thereof. Any determination that a Lender is a Defaulting Lender under clauses (a) through (d) above will be made by the Administrative Agent in its sole discretion
acting in good faith. The Administrative Agent will promptly send to all parties hereto a copy of any notice to WPZ provided for in this definition. For avoidance of doubt an assignee of a Defaulting Lender shall not be deemed to be a Defaulting
Lender solely by virtue of the fact that it is an assignee of a Defaulting Lender. 

  
 8 

 “Discovery” means Discovery Producer Services LLC, a Delaware limited liability
company, and its successors and assigns. 
 “Dollars” or “$” refers to lawful money of the United States
of America. 
 “Effective Date” means the date on or prior to February 3, 2015, specified in the notice referred to in
the last sentence of Section 4.01. 
 “Eligible Assignee” means (a) a Lender, (b) an Affiliate of a
Lender, (c) an Approved Fund, and (d) any other Person (other than a natural person) approved by (i) the Administrative Agent and (ii) unless an Event of Default has occurred and is continuing, WPZ (each such approval not to be
unreasonably withheld or delayed); provided that notwithstanding the foregoing, “Eligible Assignee” shall not include WPZ or any of WPZ’s Affiliates. 

“Environmental Laws” means all laws, rules, regulations, codes, ordinances, orders, decrees, judgments, injunctions, notices
or binding agreements issued, promulgated or entered into by any Governmental Authority, relating to the environment, preservation or reclamation of natural resources, or the management, release or threatened release of any Hazardous Material. 

“Equity Interest” means shares of the Capital Stock, partnership interests, membership interests in a limited liability
company, beneficial interests in a trust or other equity interests in any Person, or any warrants, options or other rights to acquire such interests. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time. 

“ERISA Affiliate”, as to any applicable Person, means any trade or business (whether or not incorporated) that, together with
WPZ, is treated as a single employer under Section 414(b) or (c) of the Code or, solely for purposes of Section 302 of ERISA and Section 412 of the Code, is treated as a single employer under Section 414 of the Code. 

“ERISA Event” means (a) any “reportable event”, as defined in Section 4043(c) of ERISA (other than a
“reportable event” not subject to the provision for 30-day notice to the PBGC or a “reportable event” as such term is described in Section 4043(c)(3) of ERISA) or the regulations issued thereunder with respect to a Plan
(other than an event for which the 30-day notice period is waived) which could reasonably be expected to result in a termination of, or the appointment of a trustee to administer, a Plan; (b) the existence with respect to any Plan of an
“accumulated funding deficiency” (as defined in Section 412 of the Code or Section 302 of ERISA), whether or not waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d) of ERISA of an
application for a waiver of the minimum funding standard with respect to any Plan; (d) the incurrence by WPZ or any of its ERISA Affiliates of any liability under Title IV of ERISA with respect to the termination of any Plan; (e) the
receipt by WPZ or any ERISA Affiliate from the PBGC or a plan administrator of any notice relating to an intention to terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f) the incurrence by WPZ or any of its ERISA
Affiliates of any liability with respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan during a plan year in which it was a “substantial employer,” as such term is defined in Section 4001(a)(2) of ERISA;
or (g) the receipt by WPZ or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan from WPZ or any ERISA Affiliate of any notice, concerning the 

  
 9 

 
imposition of Withdrawal Liability or a determination that a Multiemployer Plan is, or is expected to be, insolvent or in reorganization, within the meaning of Title IV of ERISA, other than
(in the case of clauses (a) through (f) of this definition) where the matters described in such clauses, in the aggregate, could not reasonably be expected to have a Material Adverse Effect. 

“Eurocurrency Liabilities” has the meaning assigned to that term in Regulation D of the Board of Governors of the
Federal Reserve System of the United States of America, as in effect from time to time. 
 “Eurodollar”, when used in
reference to any Loan or Borrowing, refers to a Loan, or Loans, in the case of a Borrowing, which bear interest at a rate determined by reference to the LIBO Rate. 

“Eurodollar Rate Reserve Percentage” of any Lender for any Interest Period for each Eurodollar Borrowing means the reserve
percentage applicable during such Interest Period (or if more than one such percentage shall be so applicable, the daily average of such percentages for those days in such Interest Period during which any such percentage shall be so applicable)
under regulations issued from time to time by the Board of Governors of the Federal Reserve System of the United States of America for determining the maximum reserve requirement (including, without limitation, any emergency, supplemental or other
marginal reserve requirement) for such Lender with respect to liabilities or assets consisting of or including Eurocurrency Liabilities having a term equal to such Interest Period. 

“Event of Default” has the meaning assigned to such term in Article VII. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 

“Excluded Taxes” means, any of the following Taxes imposed on or with respect to a Recipient or required to be withheld or
deduct from a payment to a Recipient, (a) Taxes imposed on or measured by net income (however denominated), franchise Taxes, and branch profits Taxes, in each case, (i) imposed as a result of such Recipient being organized under the laws
of, or having its principal office, or, in the case of any Lender, its applicable lending office located in, the jurisdiction imposing such Tax (or any political subdivision thereof) or (ii) that are Other Connection Taxes, (b) in the case
of a Lender (other than an assignee pursuant to a request by the Borrower under Section 2.19(b)), any U.S. Federal withholding Tax that is imposed on amounts payable to such Lender at the time such Lender becomes a party to this
Agreement (or designates a new lending office), except to the extent that such Lender (or its assignor, if any) was entitled, at the time of designation of a new lending office (or assignment), to receive additional amounts from the Borrower with
respect to such withholding Tax pursuant to Section 2.17(a), (c) any U.S. Federal withholding Tax that is attributable to such Lender’s failure to comply with Section 2.17(f) and (d) any U.S. Federal
withholding Taxes imposed by FATCA. 
 “Existing Credit Agreement” means the Second Amended & Restated Credit
Agreement dated as of February 2, 2015 among WPZ, NWP, TGPL, the lenders party thereto and Citibank, N.A., as administrative agent, as amended. 

“Extension Effective Date” has the meaning specified in Section 2.04(a). 

“Extension Fee” has the meaning specified in Section 2.04(a). 

  
 10 

 “FATCA” means Sections 1471 through 1474 of the Code, as of the date of this
Agreement (or any amended or successor version that is substantively comparable and not materially more onerous to comply with), any current or future regulations or official interpretations thereof, any applicable intergovernmental agreements
between a non-U.S. jurisdiction and the United States with respect thereto, any law, regulations, or other official guidance enacted in a non-U.S. jurisdiction relating to an intergovernmental agreement related thereto, and any agreements entered
into pursuant to Section 1471(b)(1) of the Code. 
 “Federal Funds Effective Rate” means, for any day, the weighted
average of the rates on overnight federal funds transactions with members of the Federal Reserve System arranged by federal funds brokers, as published on the next succeeding Business Day by the Federal Reserve Bank of New York, or, if such
rate is not so published for any day that is a Business Day, the average of the quotations for such day for such transactions received by the Administrative Agent from three federal funds brokers of recognized standing selected by it. 

“Fee Letter” means the letter agreement dated as of February 3, 2015 between WPZ and Barclays Bank PLC. 

“Financial Officer” means (a) with respect to WPZ, the chief financial officer, principal accounting officer, treasurer
or controller of the General Partner and (b) with respect to any other Person, the chief financial officer, principal accounting officer, treasurer, assistant treasurer or controller of such Person or the governing body of such Person. 

“Financing Transaction” means, with respect to any Person (a) any prepaid forward sale of oil, gas or minerals by such
Person (other than gas balancing arrangements in the ordinary course of business), that is intended primarily as a borrowing of funds, excluding volumetric production payments and (b) any interest rate, currency, commodity or other swap,
collar, cap, option or other derivative that is intended primarily as a borrowing of funds (excluding interest rate, currency, commodity or other swaps, collars, caps, options or other derivatives to hedge against risks for non-speculative
purposes), with the amount of the obligations of such Person thereunder being the net obligations of such Person thereunder. 

“Foreign Lender” means any Lender that is not a U.S. Person. 

“Fund” means any Person (other than a natural person) that is (or will be) engaged in making, purchasing, holding or
otherwise investing in commercial loans and similar extensions of credit in the ordinary course of its business. 
 “GAAP”
means generally accepted accounting principles in the United States of America. 
 “General Partner” means the general
partner of WPZ (including any permitted successors and assigns under the Partnership Agreement). 
 “Governmental
Authority” means the government of the United States of America or any other nation, or of any political subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other
entity exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European Central Bank). 

  
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 “Guarantors” means each of (a) the Subsidiaries of WPZ that execute a
Guaranty in accordance with Section 5.09 hereof and (b) the respective successors of such Subsidiaries, in each case until such time as any such Subsidiary shall be released and relieved of its obligations pursuant to
Section 5.09 hereof. 
 “Guaranty” means a guaranty executed by any Guarantor in favor of the Administrative
Agent and the Lenders in form and substance reasonably agreed to between WPZ and the Administrative Agent. 
 “Hazardous
Materials” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos containing materials, polychlorinated
biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature, in each case regulated pursuant to any Environmental Law. 

“Hedging Agreement” means a financial instrument or security which is used as a cash flow or fair value hedge to manage the
risk associated with a change in interest rates, foreign currency exchange rates or commodity prices. 
 “Hybrid
Securities” means any trust preferred securities, or deferrable interest subordinated debt with a tenor of at least 20 years, which provides for the optional or mandatory deferral of interest or distributions, issued by the Borrower,
or any business trusts, limited liability companies, limited partnerships or similar entities (a) substantially all of the common equity, general partner or similar interests of which are owned (either directly or indirectly through one or more
wholly owned Subsidiaries) at all times by WPZ or any of its Subsidiaries, (b) that have been formed for the purpose of issuing hybrid securities or deferrable interest subordinated debt, and (c) substantially all the assets of which
consist of (i) subordinated debt of WPZ or a Subsidiary of WPZ, and (ii) payments made from time to time on the subordinated debt. 

“Hydrocarbon Interests” means all rights, titles, interests and estates now owned or hereafter acquired by the Borrower or
any of its Subsidiaries in any and all oil, gas and other liquid or gaseous hydrocarbon properties and interests, including without limitation, mineral fee or lease interests, production sharing agreements, concession agreements, license agreements,
service agreements, risk service agreements or similar Hydrocarbon interests granted by an appropriate Governmental Authority, farmout, overriding royalty and royalty interests, net profit interests, oil payments, production payment interests and
similar interests in Hydrocarbons, including any reserved or residual interests of whatever nature. 
 “Hydrocarbons” means
oil, gas, casing head gas, condensate, distillate, liquid hydrocarbons, gaseous hydrocarbons, all products refined, separated, settled and dehydrated therefrom, including, without limitation, kerosene, liquefied petroleum gas, refined lubricating
oils, diesel fuel, drip gasoline, natural gasoline, helium, sulfur and all other minerals. 
 “Indebtedness” of any Person
at any date means, without duplication, (a) all indebtedness of such Person for borrowed money, (b) all obligations of such Person evidenced by notes, bonds, 

  
 12 

 
debentures or other similar instruments (other than surety, performance and guaranty bonds), (c) all obligations of such Person for the deferred purchase price of property or services (other
than trade payables), which obligation is, individually, in excess of $100,000,000, (d) all Capital Lease Obligations of such Person, (e) all obligations of such Person under any Financing Transaction, (f) all Attributable Obligations
of such Person with respect to any Sale and Leaseback Transaction, and (g) all obligations of such Person under guaranties in respect of, and obligations (contingent or otherwise) to purchase or otherwise acquire, or otherwise to assure a
creditor against loss in respect of, Indebtedness or obligations of others of the kinds referred to in clauses (a) through (f) of this definition; provided that Indebtedness shall not include (1) Non-Recourse Debt,
(2) Performance Guaranties, (3) monetary obligations or guaranties of monetary obligations of Persons as lessee under leases (other than, to the extent provided hereinabove, Attributable Obligations) that are, in accordance with GAAP,
recorded as operating leases, (4) any obligations of such Person under volumetric production payment arrangements, (5) International Debt and (6) guarantees by such Person of obligations of others which are not obligations described
in clauses (a) through (f) of this definition, and provided further that where any such indebtedness or obligation of such Person is made jointly, or jointly and severally, with any third party or parties other than any Subsidiary
of such Person, the amount thereof for the purpose of this definition only shall be the pro rata portion thereof payable by such Person, so long as such third party or parties have not defaulted on its or their joint and several portions thereof and
can reasonably be expected to perform its or their obligations thereunder. For the avoidance of doubt, “Indebtedness” of a Person in respect of letters of credit shall include, without duplication, only the principal amount of the
unreimbursed obligations of such Person in respect of such letters of credit that have been drawn upon by the beneficiaries to the extent of the amount drawn, and shall include no other obligations in respect of such letters of credit. 

“Indemnified Taxes” means (a) Taxes, other than Excluded Taxes, imposed on or with respect to any payment made by or on
account of any obligation of the Borrower under any Loan Document, and (b) to the extent not otherwise described in clause (a), Other Taxes. 

“Index Debt” means, as to any Person, senior, unsecured, non-credit enhanced Indebtedness of such Person. 

“Interest Election Request” means a request by the Borrower to convert or continue a Borrowing in accordance with
Section 2.08, and being in the form of attached Exhibit C. 
 “Interest Payment Date” means
(a) with respect to any ABR Loan, the last Business Day of each March, June, September and December, and (b) with respect to any Eurodollar Loan, the last Business Day of the Interest Period applicable to the Borrowing of which such Loan
is a part and, in the case of a Eurodollar Borrowing with an Interest Period of more than three (3) months’ duration, each day that occurs an integral multiple of three (3) months after the first day of such Interest Period. 

“Interest Period” means with respect to any Eurodollar Borrowing, the period commencing on the date of such Borrowing and
ending on the numerically corresponding day in the calendar month that is one, two, three, six or, if available to all of the Lenders, 12 months thereafter, as the Borrower may elect; provided, that (a) if any Interest Period would
end on a day other than a Business Day, such Interest Period shall be extended to the next succeeding Business Day unless, in 

  
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the case of a Eurodollar Borrowing only, such next succeeding Business Day would fall in the next calendar month, in which case such Interest Period shall end on the next preceding Business Day
and (b) any Interest Period pertaining to a Eurodollar Borrowing that commences on the last Business Day of a calendar month (or on a day for which there is no numerically corresponding day in the last calendar month of such Interest Period)
shall end on the last Business Day of the last calendar month of such Interest Period. For purposes of this definition, the date of a Borrowing initially shall be the date on which such Borrowing is made and thereafter shall be the effective date of
the most recent conversion or continuation of such Borrowing. 
 “International Debt” means the Indebtedness of any
International Subsidiary. 
 “International Subsidiary” means any subsidiary of WPZ that is not incorporated or organized
under the laws of the United States of America, any State thereof or the District of Columbia. 
 “Lender Insolvency Event”
means that (a) a Lender or its Parent Company is insolvent, or is generally unable to pay its debts as they become due, or admits in writing its inability to pay its debts as they become due, or makes a general assignment for the benefit of its
creditors, or (b) such Lender or its Parent Company is the subject of a bankruptcy, insolvency, reorganization, liquidation or similar proceeding, or a receiver, trustee, conservator, intervenor or sequestrator or the like has been appointed
for such Lender or its Parent Company, or such Lender or its Parent Company has taken any action in furtherance of or indicating its consent to or acquiescence in any such proceeding or appointment. 

“Lender Appointment Period” has the meaning assigned in Section 8.06. 

“LIBO Rate” means for any Interest Period as to any Eurodollar Borrowing, (i) the rate per annum determined by the
Administrative Agent to be the offered rate which appears on the page of the Reuters Screen which displays the London interbank offered rate administered by ICE Benchmark Administration Limited (such page currently being the LIBOR01 page) for
deposits (for delivery on the first day of such Interest Period) with a term equivalent to such Interest Period in Dollars, determined as of approximately 11:00 a.m. (London, England time), two Business Days prior to the commencement of such
Interest Period, (ii) in the event the rate referenced in the preceding clause (i) does not appear on such page or service or if such page or service shall cease to be available, the rate determined by the Administrative Agent to be the
offered rate on such other page or other service which displays the LIBO Rate for deposits (for delivery on the first day of such Interest Period) with a term equivalent to such Interest Period in Dollars, determined as of approximately 11:00 a.m.
(London, England time) two Business Days prior to the commencement of such Interest Period or (iii) in the event the rates referenced in the preceding clauses (i) and (ii) are not available, the rate per annum determined by the
Administrative Agent to be the average offered quotation rate by major banks in the London interbank market to Barclays for deposits (for delivery on the first day of the relevant period) in Dollars of amounts in same day funds comparable to the
principal amount of the Eurodollar Borrowing for which the Eurodollar Rate is then being determined with maturities comparable to such Interest Period as of approximately 11:00 a.m. (London, England time) two Business Days prior to the commencement
of such Interest Period; provided, that if any such rate determined pursuant to the preceding clauses (i) or (ii) is below zero, the Eurodollar Rate will be deemed to be zero. 

  
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 “Lien” means, with respect to any asset, (a) any mortgage, deed of trust,
lien, pledge, hypothecation, encumbrance, charge or security interest in, on or of such asset, and (b) the interest of a vendor or a lessor under any conditional sale agreement, capital lease or title retention agreement relating to such asset.

 “Loans” means the loans made by the Lenders to the Borrower pursuant to this Agreement. 

“Loan Documents” means this Agreement, each Note, the Fee Letter, the Guaranties and all other agreements, certificates,
documents, instruments and writings at any time delivered in connection herewith or therewith (exclusive of term sheets and commitment letters). 

“Material Adverse Effect” means a material adverse effect on (a) the financial condition, operations, or properties of
WPZ and its Subsidiaries, taken as a whole, provided however, (i) a downgrade by S&P and/or Moody’s of their respective rating of Index Debt of the Borrower shall not, in and of itself, be deemed to be a Material Adverse Effect,
and (ii) the fact that WPZ is unable to borrow in the commercial paper market shall not, in and of itself, be deemed to be a Material Adverse Effect; but for purposes of clarity in interpreting the foregoing clauses (i) and (ii), it is
agreed that the event(s), change(s), circumstance(s) or condition(s) that causes such downgrade (or an announcement of a potential downgrade or a review for possible ratings change) of the rating of Index Debt of the Borrower or that causes such
inability of WPZ to borrow in the commercial paper market, and the effect or change caused by such downgrade (or an announcement of a potential downgrade or a review for possible ratings change) of the rating of Index Debt of the Borrower or by such
inability to borrow, will be considered in determining whether there has been a Material Adverse Effect; or (b) the ability of WPZ and the Guarantors, if any, to perform their obligations, taken as a whole, under this Agreement and the Notes,
or (c) the validity or enforceability of this Agreement or the Notes. 
 “Material Indebtedness” means, with respect
to the Borrower, Indebtedness (other than the Loans), of any one or more of the Borrower and its Subsidiaries in an aggregate principal amount exceeding $100,000,000. 

“Material Project” means, for any Person, the construction or expansion of any capital project of such Person or any of its
Subsidiaries or any entity with respect to which it holds an equity method investment, the aggregate capital cost of which exceeds $10,000,000. 

“Material Project EBITDA Adjustments” shall mean, for any Person, with respect to each Material Project of such Person: 

(A) prior to the Commercial Operation Date of a Material Project (but including the fiscal quarter in which such Commercial Operation Date
occurs), a percentage (based on the then-current completion percentage of such Material Project) of an amount to be approved by the Administrative Agent as the projected Consolidated EBITDA of such Person and its Subsidiaries attributable to such
Material Project for the first 12-month period following the scheduled Commercial Operation Date of such Material Project (such amount to be determined based on customer contracts or tariff-based customers relating to such Material Project, the
creditworthiness of the other parties to such contracts or such tariff-based customers, and projected revenues from such contracts, tariffs, capital costs and expenses, scheduled Commercial Operation Date, oil and gas reserve and production
estimates, 

  
 15 

 
commodity price assumptions and other factors reasonably deemed appropriate by Administrative Agent), which may, at such Person’s option, be added to actual Consolidated EBITDA for such
Person and its Subsidiaries for the fiscal quarter in which construction of such Material Project commences and for each fiscal quarter thereafter until the Commercial Operation Date of such Material Project (including the fiscal quarter in which
such Commercial Operation Date occurs, but net of any actual Consolidated EBITDA of such Person and its Subsidiaries attributable to such Material Project following such Commercial Operation Date); provided that if the actual Commercial
Operation Date does not occur by the scheduled Commercial Operation Date, then the foregoing amount shall be reduced, for quarters ending after the scheduled Commercial Operation Date to (but excluding) the first full quarter after its Commercial
Operation Date, by the following percentage amounts depending on the period of delay (based on the period of actual delay or then-estimated delay, whichever is longer): (i) 90 days or less, 0%, (ii) longer than 90 days, but not more than
180 days, 25%, (iii) longer than 180 days but not more than 270 days, 50%, and (iv) longer than 270 days, 100%; and 
 (B)
beginning with the first full fiscal quarter following the Commercial Operation Date of a Material Project and for the two immediately succeeding fiscal quarters, an amount to be approved by the Administrative Agent as the projected Consolidated
EBITDA of such Person and its Subsidiaries attributable to such Material Project (determined in the same manner as set forth in clause (A) above) for the balance of the four full fiscal quarter period following such Commercial Operation Date,
which may, at such Person’s option, be added to actual Consolidated EBITDA for such Person and its Subsidiaries for such fiscal quarters. 

Notwithstanding the foregoing: 

(i) no such additions shall be allowed with respect to any Material Project unless: 

(a) not later than 30 days prior to the delivery of any certificate required by the terms and provisions of
Section 5.01(c) to the extent Material Project EBITDA Adjustments will be made to Consolidated EBITDA in determining compliance with Section 6.07(b), such Person shall have delivered to the Administrative Agent a written
request for Material Project EBITDA Adjustments setting forth (i) the scheduled Commercial Operation Date for such Material Project, (ii) pro forma projections of Consolidated EBITDA attributable to such Material Project,
(iii) information, as applicable, regarding (A) customer contracts relating to such Material Project (or negotiated settlements in connection with such Material Project), (B) the creditworthiness of the other parties to such contracts
or settlements, as the case may be, (C) projected revenues from such contracts or settlements, as the case may be, (D) projected capital costs and expenses, and (E) commodity price assumptions, and (iv) such other information
previously requested by the Administrative Agent which it reasonably deemed necessary to approve such Material Project EBITDA Adjustments, and 

(b) prior to the date such certificate is required to be delivered, the Administrative Agent shall have approved (such approval
not to be unreasonably withheld) such projections and shall have received such other information and documentation as the Administrative Agent may reasonably request, all in form and substance satisfactory to the Administrative Agent, and 

  
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 (ii) the aggregate amount of all Material Project EBITDA Adjustments during any period shall be
limited to 20% of the total actual Consolidated EBITDA of such Person and its Subsidiaries for such period (which total actual Consolidated EBITDA shall be determined without including any Material Project EBITDA Adjustments). 

Any Material Project EBITDA Adjustment with respect to any Material Project of an entity with respect to which such Person holds an equity
method investment shall be determined as set forth above, based upon the projected (prior to the Commercial Operation Date) and actual (on and after the Commercial Operation Date) cash dividends projected to be received or actually received by such
Person on a consolidated basis from such entity. 
 “Material Subsidiary” means, with respect to the Borrower, each
Subsidiary of the Borrower that, as of the last day of the fiscal year of the Borrower most recently ended prior to the relevant determination of Material Subsidiaries, has a net worth determined in accordance with GAAP that is greater than 10% of
the Consolidated Net Worth of the Borrower as of such day; provided that the Non-Recourse Subsidiaries shall not be deemed to be Material Subsidiaries for any purpose of this Agreement. 

“Maturity Date” means August 3, 2015, as the same may be extended pursuant to, and subject to the terms and conditions
of, Section 2.04. 
 “MLP Combination” has the meaning specified in Section 6.02. 

“Moody’s” means Moody’s Investors Service, Inc. or its successor. 

“Multiemployer Plan” means a multiemployer plan as defined in Section 4001(a)(3) of ERISA, which is maintained by (or to
which there is an obligation to contribute of) the Borrower or an ERISA Affiliate of the Borrower. 
 “Net Cash Proceeds”
means with respect to any prepayment or reduction event described in Section 2.11(b) (a “Prepayment Event”), (a) the gross cash proceeds (including payments from time to time in respect of installment obligations, if
applicable) received by or on behalf of the Borrower in respect of such Prepayment Event, less (b) the sum, without duplication, of: 

(i) the amount, if any, of all taxes paid or estimated to be payable in connection with such Prepayment Event, 

(ii) the amount of any reasonable reserve established in accordance with GAAP against any liabilities (other than any taxes
deducted pursuant to clause (i) above) (x) associated with the assets that are the subject of such Prepayment Event and (y) retained by the Borrower, provided that the amount of any subsequent reduction of such reserve (other
than in connection with a payment in respect of any such liability) shall be deemed to be Net Cash Proceeds of such a Prepayment Event occurring on the date of such reduction, 

(iii) the amount of any Indebtedness (other than any Indebtedness outstanding hereunder) secured by a Lien on the assets that
are the subject of such Prepayment Event to the extent that the instrument creating or evidencing such Indebtedness by its terms requires that such Indebtedness be repaid directly as a result of such Prepayment Event, 

(iv) fees, underwriting discounts, commissions, costs and expenses paid in connection with any of the foregoing, 

  
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 in each case only to the extent not already deducted in arriving at the amount referred to in
clause (a) above. 
 “Non-Defaulting Lender” means, at any time, a Revolving Lender that is not a Defaulting Lender.

 “Non-Recourse Debt” means any Indebtedness incurred by any Non-Recourse Subsidiary to finance the acquisition,
improvement, installation, design, engineering, construction, development, completion, maintenance or operation of, or otherwise to pay costs and expenses relating to or provide financing for, a project, which Indebtedness does not provide for
recourse against WPZ or any Subsidiary of WPZ (other than a Non-Recourse Subsidiary and such recourse as exists under a Performance Guaranty) or any property or asset of WPZ or any Subsidiary of WPZ (other than the Equity Interests in, or the
property or assets of, a Non-Recourse Subsidiary). Non-Recourse Debt may become or cease to become Non-Recourse Debt on the basis of whether it satisfies this definition at the time considered. 

“Non-Recourse Subsidiary” means (a) any subsidiary of WPZ whose principal purpose is to incur Non-Recourse Debt and/or
construct, lease, own or operate the assets financed thereby, or to become a direct or indirect partner, member or other equity participant or owner in a Person created for such purpose, and substantially all the assets of which subsidiary and such
Person are limited to (i) those assets being financed (or to be financed), or the operation of which is being financed (or to be financed), in whole or in part by Non-Recourse Debt, or (ii) Equity Interests in, or Indebtedness or other
obligations of, one or more other such Subsidiaries or Persons, or (iii) Indebtedness or other obligations of WPZ or its Subsidiaries or other Persons and (b) any Subsidiary of a Non-Recourse Subsidiary. A Non-Recourse Subsidiary may
become or cease to become a Non-Recourse Subsidiary on the basis of whether it satisfies this definition at the time considered. 

“Notes” means any promissory notes issued by the Borrower pursuant to Section 2.10(e). 

“NWP” means Northwest Pipeline LLC, as Delaware limited liability company. 

“Oil and Gas Agreements” means operating agreements, processing agreements, farm-out and farm-in agreements, development
agreements, area of mutual interest agreements, contracts for the gathering and/or transportation of oil and natural gas, unitization agreements, pooling arrangements, joint bidding agreements, joint venture agreements, participation agreements,
surface use agreements, service contracts, leases and subleases of Oil and Gas Properties or other similar agreements which are customary in the oil and gas business, howsoever designated, in each case made or entered into in the ordinary course of
the oil and gas business as conducted by the Borrower and its Subsidiaries. 
 “Oil and Gas Properties” means
(a) Hydrocarbon Interests; (b) the property now or hereafter pooled or unitized with Hydrocarbon Interests; (c) all presently existing or future unitization, pooling agreements and declarations of pooled units and the units created
thereby (including, without limitation, all units created under orders, regulations and rules of any Governmental Authority) which may affect all or any portion of the Hydrocarbon Interests; (d) all operating agreements,

  
 18 

 
contracts and other agreements which relate to any of the Hydrocarbon Interests or the production, sale, purchase, exchange or processing of Hydrocarbons from or attributable to such Hydrocarbon
Interest; (e) all Hydrocarbons in and under and which may be produced and saved or attributable to the Hydrocarbon Interests, the lands covered thereby and all oil and other Hydrocarbons in tanks and all rents, issues, profits, proceeds,
products, revenues and other income from or attributable to the Hydrocarbon Interests; and (f) all tenements, hereditaments, appurtenances and property in any manner appertaining, belonging, affixed or incidental to the Hydrocarbon Interests,
and any and all property, now owned or hereinafter acquired and situated upon, used, held for use or useful in connection with the operating, working or development of any of such Hydrocarbon Interests or property (excluding drilling rigs,
automotive equipment or other personal property which may be on such premises for the purpose of drilling a well or for other similar temporary uses) and including any and all oil wells, gas wells, injection wells or other wells, buildings,
structures, fuel separators, liquid extraction plants, plant compressors, pumps, pumping units, field gathering systems, tanks and tank batteries, fixtures, valves, fittings, machinery and parts, engines, boilers, meters, apparatus, equipment,
appliances, tools, implements, cables, wires, towers, casing, tubing and rods, surface leases, rights-of-way, easements and servitudes together with all additions, substitutions, replacements, accessions and attachments to any and all of the
foregoing. 
 “Other Connection Taxes” means, with respect to any Recipient, Taxes imposed as a result of a present or
former connection between such Recipient and the jurisdiction imposing such Tax (other than connections arising from such Recipient having executed, delivered, become a party to, performed its obligations under, received payments under, received or
perfected a security interest under, engaged in any other transaction pursuant to or enforced any Loan Document, or sold or assigned an interest in any Loans or Loan Document). 

“Other Taxes” means all present or future stamp, court or documentary, intangible, recording, filing or similar Taxes that
arise from any payment made under, from the execution, delivery, performance, enforcement or registration of, from the receipt or perfection of a security interest under, or otherwise with respect to, any Loan Document, except any such Taxes imposed
with respect to an assignment (other than an assignment made pursuant to Section 2.19). 
 “Parent Company”
means, with respect to a Lender, the bank holding company (as defined in Federal Reserve Board Regulation Y), if any, of such Lender, and/or any Person owning, beneficially or of record, directly or indirectly, a majority of the shares of such
Lender. 
 “Participant” has the meaning set forth in Section 9.05(d). 

“Participant Register” has the meaning set forth in Section 9.05(d). 

“Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership of Access Midstream Partners,
L.P. (f/k/a Chesapeake Midstream Partners, L.P.), dated as of August 3, 2010, as amended pursuant to Amendment No. 1, dated as of July 24, 2012, as amended pursuant to Amendment No. 2, dated as of December 20, 2012, as
amended pursuant to Amendment No. 3, dated as of January 29, 2015, as amended pursuant to Amendment No. 4, dated as of February 2, 2015, as further modified from time to time. 

  
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 “PBGC” means the Pension Benefit Guaranty Corporation referred to and defined in
ERISA and any successor entity performing similar functions. 
 “pdf” means Portable Document Format or any other
electronic format for the transmission of images. 
 “Performance Guaranty” means any guaranty issued in connection with
any Non-Recourse Debt or International Debt that (a) if secured, is secured only by assets of, or Equity Interests in, a Non-Recourse Subsidiary or an International Subsidiary, and (b) guarantees to the provider of such Non-Recourse Debt
or International Debt or any other Person the (i) performance of the improvement, installation, design, engineering, construction, acquisition, development, completion, maintenance or operation of, or otherwise affects any such act in respect
of, all or any portion of the project that is financed by such Non-Recourse Debt or International Debt, (ii) completion of the minimum agreed equity contributions to the relevant Non-Recourse Subsidiary or International Subsidiary, or
(iii) performance by a Non-Recourse Subsidiary or an International Subsidiary of obligations to Persons other than the provider of such Non-Recourse Debt or International Debt. 

“Permitted Liens” means: 

(a) any Lien existing on any property at the time of the acquisition thereof and not created in contemplation of such acquisition by WPZ or
any of its Subsidiaries, whether or not assumed by WPZ or any of its Subsidiaries; 
 (b) any Lien existing on any property of a Subsidiary
of WPZ at the time it becomes a Subsidiary of WPZ and not created in contemplation thereof and any Lien existing on any property of any Person at the time such Person is merged or liquidated into or consolidated with WPZ (whether or not WPZ is the
surviving Person) or any of its Subsidiaries and not created in contemplation thereof; 
 (c) purchase money and analogous Liens incurred in
connection with the acquisition, development, construction, improvement, repair or replacement of property (including such Liens securing Indebtedness incurred within 12 months of the date on which such property was acquired, developed, constructed,
improved, repaired or replaced); provided that all such Liens attach only to the property acquired, developed, constructed, improved, repaired or replaced and the principal amount of the Indebtedness secured by such Lien shall not exceed the
gross cost of the property; 
 (d) [reserved]; 

(e) Liens on accounts receivable and related asset proceeds thereof arising in connection with a receivables financing and any Lien held by
the purchaser of receivables derived from property or assets sold by WPZ or any of its Subsidiaries and securing such receivables resulting from the exercise of any rights arising out of defaults on such receivables; 

(f) leases constituting Liens now or hereafter existing and any renewals or extensions thereof; 

(g) any Lien securing industrial development, pollution control or similar revenue bonds; 

  
 20 

 (h) Liens existing on the Closing Date; 

(i) Liens in favor of the Borrower or any of its Subsidiaries; 

(j) Liens securing Indebtedness incurred to refund, extend, refinance or otherwise replace Indebtedness (“Refinanced
Indebtedness”) secured by a Lien permitted to be incurred under this Agreement; provided, that (i) the principal amount of such Refinanced Indebtedness does not exceed the principal amount of Indebtedness refinanced (plus the
amount of penalties, premiums, fees, accrued interest and reasonable expenses and other obligations incurred therewith) at the time of such refunding, extension, refinancing or replacement and (ii) the Liens securing the Refinancing
Indebtedness are limited to either (A) substantially the same collateral that secured, at the time of such refunding, extension, refinancing or replacement, the Indebtedness so refunded, extended, refinanced or replaced or (B) other
collateral of reasonably equivalent value of the collateral described in clause (A) above; 
 (k) Liens on and pledges of the Equity
Interests of any joint venture owned by WPZ or any of its Subsidiaries to the extent securing Indebtedness of such joint venture that is non-recourse to WPZ or any of its Subsidiaries; 

(l) any Lien created or assumed by WPZ or any of its Subsidiaries on oil, gas, coal or other mineral or timber property, owned or leased by
WPZ or any of its Subsidiaries in the ordinary course of the business; 
 (m) Liens on the products and proceeds (including insurance,
condemnation and eminent domain proceeds) of and accessions to, and contract or other rights (including rights under insurance policies and product warranties) derivative of or relating to, property permitted to be subject to Liens but subject to
the same restrictions and limitations set forth in this Agreement as to Liens on such property (including the requirement that such Liens on products, proceeds, accessions and rights secure only obligations that such property is permitted to
secure); 
 (n) any Liens securing Indebtedness neither assumed nor guaranteed by WPZ or a Subsidiary of WPZ nor on which it customarily
pays interest, existing upon real estate or rights in or relating to real estate (including rights-of-way and easements) acquired by WPZ or such Subsidiary, which Liens do not materially impair the use of such property for the purposes for which it
is held by WPZ or such Subsidiary; 
 (o) any Lien existing or hereafter created on any office equipment, data processing equipment
(including computer and computer peripheral equipment) or transportation equipment (including motor vehicles, aircraft and marine vessels); 

(p) undetermined Liens incidental to construction or maintenance; 

(q) any Lien created by WPZ or a Subsidiary of WPZ on any contract (or any rights thereunder or proceeds therefrom) providing for advances by
WPZ or such Subsidiary to finance gas exploration and development or to finance acquisition or construction of gathering systems, which Lien is created to secure Indebtedness incurred to finance such advance; 

  
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 (r) any Liens on cash, short term investments and letters of credit securing obligations of WPZ
or any of its Subsidiaries under currency hedges and interest rate hedges; 
 (s) Liens granted pursuant to (i) the Existing Credit
Agreement (and any “Loan Document” as defined therein), including in connection with any cash collateralization of letters of credit issued thereunder and (ii) any Loan Document; 

(t) Liens for Taxes, customs duties or other governmental charges or assessments that are not at the time determined (or, if determined, are
not at the time delinquent), or that are delinquent but the validity of which is being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with GAAP, if required by such principles, have been provided
on the books of the relevant entity; 
 (u) Liens pursuant to master netting agreements and other agreements entered into in the ordinary
course of business in connection with hedging obligations, so long as such Liens encumber only amounts owed under the hedges covered by such agreements; 

(v) Liens on cash deposits in the nature of a right of setoff, banker’s lien, counterclaim or netting of cash amounts owed arising in the
ordinary course of business on deposit accounts; 
 (w) Liens securing Non-Recourse Debt of a Non-Recourse Subsidiary on the assets (and the
income and proceeds therefrom) of such Non-Recourse Subsidiary that are not owned by WPZ or any of its Subsidiaries on the Closing Date and that are acquired, developed, operated and/or constructed with the proceeds of (i) such Non-Recourse
Debt or investments in such Non-Recourse Subsidiary or (ii) Non-Recourse Debt or investments referred to in clause (i) refinanced in whole or in part by such Non-Recourse Debt; 

(x) Liens securing Non-Recourse Debt of a Non-Recourse Subsidiary on the Equity Interests and assets (and the income and proceeds therefrom)
of such Non-Recourse Subsidiary that are owned by WPZ or any of its Subsidiaries on the Closing Date (“Existing Assets”) and that are developed, operated and/or constructed with the proceeds of (i) such Non-Recourse Debt or
investments in such Non-Recourse Subsidiary or (ii) Non-Recourse Debt or investments referred to in clause (i) refinanced in whole or in part by such Non-Recourse Debt, provided that the aggregate fair market value (determined as of
the Closing Date) of Existing Assets on which Liens may be granted pursuant to this clause (x) shall not exceed $250,000,000; 
 (y)
Liens securing International Debt so long as such Liens do not encumber any assets of the Borrower or any of its Subsidiaries (other than the Equity Interests of the International Subsidiary that is the borrower of such International Debt); 

(z) Liens on deposits or other security given to secure bids, tenders, trade contracts, leases, government contracts, or to secure or in lieu
of surety and appeal bonds, performance and return of money bonds, in each case to secure obligations arising in the ordinary course of business of the Borrower and its Subsidiaries; 

(aa) Liens on deposits or other security given to secure public or statutory obligations and deposits as security for the payment of Taxes,
other governmental assessments or other similar governmental charges, in each case to secure obligations of the Borrower or any of its Subsidiaries arising in the ordinary course of business; and 

  
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 (bb) Liens arising under Oil and Gas Agreements to secure compliance with such agreements;
provided that any such Lien referred to in this clause are for claims which are not delinquent or which are being contested in good faith by appropriate action and for which adequate reserves have been maintained in accordance with GAAP, and
provided further that any such Lien referred to in this clause does not materially impair the use of the property covered by such Lien for the purposes for which such property is held by the Borrower or any Subsidiary or materially impair the
value of such property subject thereto, and provided further that such Liens are limited to property, including all relevant Oil and Gas Properties, that are the subject of the relevant Oil and Gas Agreement. 

Each of the foregoing paragraphs (a) through (bb) shall also be deemed to permit (i) appropriate Uniform Commercial Code and other
similar filings to perfect the Liens permitted by such paragraph and (ii) Liens on the products and proceeds (including insurance, condemnation and eminent domain proceeds) of and accessions to, and contract or other rights (including rights
under insurance policies and product warranties) derivative of or relating to, the property permitted to be encumbered under such paragraph, but subject to the same restrictions and limitations herein set forth as to Liens on such property
(including the requirement that such Liens on products, proceeds, accessions and rights secure only the specified obligations, and in the amount, that such property is permitted to secure). 

“Person” means any natural person, corporation, limited liability company, trust, joint venture, association, company,
partnership, Governmental Authority or other entity. 
 “Plan” means any employee pension benefit plan (other than a
Multiemployer Plan) as defined in Section 3(2) of ERISA currently maintained by, or in the event such plan has terminated, to which contributions have been made or an obligation to make such contributions has accrued during any of the five plan
years preceding the date of the termination of such plan by, the Borrower or any ERISA Affiliate of the Borrower subject to the provisions of Title IV of ERISA or Section 412 of the Code or Section 302 of ERISA, and in respect of
which WPZ or any ERISA Affiliate is (or, if such plan were terminated, would under Section 4069 of ERISA be deemed to be) an “employer” as defined in Section 3(5) of ERISA. 

“Pre-Merger WPZ” means the Person known as Williams Partners L.P., a Delaware limited partnership prior to giving effect to
the ACMP Merger. 
 “Prepayment Event” has the meaning set forth in the definition of Net Cash Proceeds. 

“Prime Rate” means the rate of interest publicly announced, from time to time, by the Administrative Agent at its principal
office in New York City as its “prime rate,” with the understanding that the “prime rate” is one of the Administrative Agent’s base rates (not necessarily the lowest of such rates) and serves as the basis upon which
effective rates of interest are calculated for those loans making reference thereto and is evidenced by the recording thereof after its announcement in such internal publications as the Administrative Agent may designate. Each change in the Prime
Rate shall be effective from and including the date such change is publicly announced as being effective. 

  
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 “Pro Rata Share” means, as to any Revolving Lender, its Commitment divided by
the aggregate Commitments of all Revolving Lenders. 
 “Rating Agency” means each of Moody’s and S&P. 

“Recipient” means (a) the Administrative Agent and (b) any Lender as applicable. 

“Register” has the meaning set forth in Section 9.05(c). 

“Related Parties” means, with respect to any specified Person, such Person’s Affiliates and the respective directors,
officers, members, partners, employees, agents and advisors of such Person and such Person’s Affiliates. 
 “Required
Lenders” means, at any time, Revolving Lenders having Credit Exposures and unused Commitments representing more than 50% of the sum of the total Credit Exposures and unused Commitments at such time, as such definition may be modified from
time to time in accordance with Section 9.03 hereof. 
 “Responsible Officer” means (a) with respect to
WPZ, the president, chief executive officer, chief financial officer, the general counsel, any vice president, the secretary, any assistant secretary, the treasurer, any assistant treasurer, or the controller of the General Partner or any other
officer designated as a “Responsible Officer” by the board of directors of the General Partner and (b) with respect to any other Person, the president, chief executive officer, chief financial officer, the general counsel, any vice
president, the secretary, any assistant secretary, the treasurer, any assistant treasurer, or the controller of such Person or any other officer designated as a “Responsible Officer” by the board of directors (or equivalent governing body)
of such Person. 
 “Restricted Payment” means, with respect to any Person, any dividend or other distribution (whether in
cash, securities or other property) with respect to any class of Equity Interests of such Person, or any payment (whether in cash, securities or other property), including any sinking fund or similar deposit, on account of the purchase, redemption,
retirement, acquisition, cancellation or termination of any Equity Interests of such Person or any option, warrant or other right to acquire any Equity Interests of such Person; provided that (a) dividends, distributions or payments of
common Equity Interests of such Person, (b) any Equity Interest split, Equity Interest reverse split or similar transactions and (c) the Borrower’s open market repurchase of any of its Equity Interests and acquisitions by officers,
directors and employees of the Borrower of Equity Interests in the Borrower through cashless exercise of options, warrants or other rights to acquire Equity Interests in the Borrower issued pursuant to an employment, equity award, equity option or
equity appreciation agreement or plans entered into by the Borrower in the ordinary course of business, in each case shall be deemed not to be “Restricted Payments”. 

“Revolving Lenders” means the Persons listed on Schedule 2.01 and any other Person that shall have become a party
hereto pursuant to an Assignment and Acceptance other than any such Person that ceases to be a party hereto pursuant to an Assignment and Acceptance. 

  
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 “S&P” means Standard & Poor’s Financial Services LLC, a
subsidiary of The McGraw-Hill Companies, Inc. and any successor thereto. 
 “Sale and Leaseback Transaction” of any Person
means any arrangement entered into by such Person or any Subsidiary of such Person, directly or indirectly, whereby such Person or any Subsidiary of such Person shall sell or transfer any property, whether now owned or hereafter acquired to any
other Person (a “Transferee”), and whereby such first Person or any Subsidiary of such first Person shall then or thereafter rent or lease as lessee such property or any part thereof or rent or lease as lessee from such Transferee
or any other Person other property which such first Person or any Subsidiary of such first Person intends to use for substantially the same purpose or purposes as the property sold or transferred. 

“Senior Notes” means senior notes issued by WPZ or its predecessors constituting Material Indebtedness. 

“Solvent” and “Solvency” means, with respect to any Person on a particular date, that on such date
(a) the fair value of the property of such Person is greater than the total amount of liabilities, including contingent liabilities, of such Person, (b) the present fair salable value of the assets of such Person is not less than the
amount that will be required to pay the probable liability of such Person on its debts as they become absolute and matured, (c) such Person does not intend to, and does not believe that it will, incur debts or liabilities beyond such
Person’s ability to pay such debts and liabilities as they mature and (d) such Person is not engaged in business or a transaction, and is not about to engage in business or a transaction, for which such Person’s property would
constitute an unreasonably small capital. The amount of contingent liabilities at any time shall be computed as the amount that, in the light of all the facts and circumstances existing at such time, represents the amount that can reasonably be
expected to become an actual or matured liability. 
 “Specified Acquisition” means (i) the ACMP Merger and
(ii) one or more acquisitions of assets, Equity Interests, entities, operating lines or divisions in any fiscal quarter for an aggregate purchase price of not less than $25,000,000, whether effectuated in one or a series of related
transactions. 
 “Subsidiary” means, with respect to any specified Person: 

(a) any corporation, association or other business entity (other than a partnership or limited liability company) of which more than 50% of
the total voting power of Voting Stock is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and 

(b) any partnership (whether general or limited) or limited liability company (i) the sole general partner or member of which is such
Person or a Subsidiary of such Person, or (ii) if there is more than a single general partner or member, either (A) the only managing general partners or managing members of which are such Person or one or more Subsidiaries of such Person
(or any combination thereof) or (B) such Person owns or controls, directly or indirectly, a majority of the outstanding general partner interests, member interests or other Voting Stock of such partnership or limited liability company,
respectively; provided, however that “Subsidiary” with respect to the Borrower does not include (1) any Non-Recourse Subsidiary and (2) any International Subsidiary. 

  
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 “Taxes” means all present or future taxes, levies, imposts, duties, deductions,
withholdings, assessments, fees or other charges imposed by any Governmental Authority, including any interest, additions to tax or penalties applicable thereto. 

“TGPL” means Transcontinental Gas Pipe Line Company, LLC, a Delaware limited liability company. 

“Transactions” means the signature and delivery by the Borrower of this Agreement and the borrowing of Loans. 

“Type”, when used in reference to any Loan or Borrowing, refers to whether the rate of interest on such Loan, or on the Loans
comprising such Borrowing, is determined by reference to the LIBO Rate or the Alternate Base Rate. 
 “U.S. Person” means
any Person that is a “United States person” as defined in Section 7701(a)(30) of the Code. 
 “U.S. Tax Compliance
Certificate” has the meaning assigned to such term in Section 2.17(f). 
 “Voting Stock” of any Person
as of any date means the Capital Stock of such Person that is at the time entitled (without regard to the occurrence of any contingency) to vote in the election of the Board of Directors (or similar governing body) of such Person. 

“Williams” means The Williams Companies, Inc., a Delaware corporation. 

“Withdrawal Liability” means liability to a Multiemployer Plan as a result of a complete or partial withdrawal from such
Multiemployer Plan, as such terms are defined in Part I of Subtitle E of Title IV of ERISA. 
 Section 1.02
Classification of Loans and Borrowings. For purposes of this Agreement, Loans may be classified and referred to by Type (e.g., a “Eurodollar Loan”). Borrowings also may be classified and referred to by Type (e.g., a
“Eurodollar Borrowing”). 
 Section 1.03 Terms Generally. The definitions of terms herein shall apply equally to the
singular and plural forms of the terms defined. Whenever the context may require, any pronoun shall include the corresponding masculine, feminine and neuter forms. The words “include,” “includes” and “including” shall
be deemed to be followed by the phrase “without limitation.” The word “will” shall be construed to have the same meaning and effect as the word “shall.” Unless the context requires otherwise (a) any definition of
or reference to any agreement, instrument or other document herein shall be construed as referring to such agreement, instrument or other document as from time to time amended, supplemented or otherwise modified (subject to any restrictions on such
amendments, supplements or modifications set forth herein), (b) any reference herein to any Person shall be construed to include such Person’s successors and assigns, (c) the words “herein,” “hereof” and
“hereunder,” and words of similar import, shall be construed to refer to this Agreement in its entirety and not to any particular provision hereof, (d) all references herein to Articles, Sections, Exhibits and Schedules shall be
construed to refer to Articles and Sections of, and Exhibits and Schedules to, this Agreement, (e) any reference to any law or regulation herein shall, unless otherwise specified, refer to such law or regulation as amended, modified or
supplemented from time 

  
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to time and (f) the words “asset” and “property” shall be construed to have the same meaning and effect and to refer to any and all tangible and intangible assets and
properties, including cash, securities, accounts and contract rights. 
 Section 1.04 Accounting Terms; GAAP. All accounting
terms not specifically defined shall be construed in accordance with GAAP. To the extent there are any changes in accounting standards from December 31, 2014, the financial condition covenants set forth herein will continue to be determined in
accordance with accounting standards in effect on December 31, 2014, as applicable, until such time, if any, as such financial covenants are adjusted or reset to reflect such changes in accounting standards and such adjustments or resets are
agreed to in writing by the Borrower and the Administrative Agent (after consultation with the Required Lenders). 
 ARTICLE II 

THE CREDITS 

Section 2.01 Commitments. 

(a) Loans. Subject to the terms and conditions set forth herein, each Revolving Lender agrees to make Loans in Dollars to the Borrower
from time to time during the Availability Period in an aggregate principal amount that will not result in (i) such Lender’s Credit Exposure exceeding such Lender’s Commitment or (ii) the sum of the total Credit Exposures
exceeding the Aggregate Commitments. Within the foregoing limits and subject to the terms and conditions set forth herein, the Borrower may borrow, prepay and reborrow Loans. 

(b) [Reserved]. 
 (c)
[Reserved]. 
 Section 2.02 Loans and Borrowings. 

(a) Each Loan shall be made as part of a Borrowing consisting of Loans made by the Revolving Lenders ratably in accordance with their
respective Commitments. The failure of any Lender to make any Loan required to be made by it shall not relieve any other Lender of its obligations hereunder; provided that the Commitments of the Lenders are several and no Lender shall be
responsible for any other Lender’s failure to make Loans as required. 
 (b) Subject to Section 2.14, each Borrowing shall
be comprised entirely of ABR Loans or Eurodollar Loans as the Borrower may request in accordance herewith. Each Lender at its option may make any Eurodollar Loan by causing any domestic or foreign branch or Affiliate of such Lender to make such
Loan; provided that any exercise of such option shall not affect the obligation of the Borrower to repay such Loan in accordance with the terms of this Agreement. 

(c) At the commencement of each Interest Period for any Eurodollar Borrowing, such Borrowing shall be in an aggregate amount that is an
integral multiple of $1,000,000 and not less than $5,000,000. At the time that each ABR Borrowing is made, such Borrowing shall be in an aggregate amount that is an integral multiple of $1,000,000 and not less than $5,000,000; provided that
an ABR Borrowing may be in an aggregate amount that is equal to the entire unused balance of the Aggregate Commitments. Borrowings of more than one Type may be outstanding at the same time; provided that there shall not at any time be more
than a total of 24 Eurodollar Borrowings outstanding. 
 (d) Notwithstanding any other provision of this Agreement, the Borrower shall not
be entitled to request, or to elect to convert or continue, any Borrowing if the Interest Period requested with respect thereto would end after the Maturity Date. 

  
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 Section 2.03 Requests for Borrowings. To request a Borrowing, the Borrower shall
notify the Administrative Agent of such request by telephone (a) in the case of a Eurodollar Borrowing, not later than 12:00 noon, New York City time, three Business Days before the date of the proposed Borrowing or (b) in the case of
an ABR Borrowing, not later than 11:00 a.m., New York City time, on the date of the proposed Borrowing. Each such telephonic Borrowing Request shall be irrevocable and shall be confirmed promptly by hand delivery, fax or emailed pdf to the
Administrative Agent of a written Borrowing Request signed by the Borrower. Each such telephonic and written Borrowing Request shall specify the following information in compliance with Section 2.02: 

(i) the aggregate amount of the requested Borrowing; 

(ii) the date of such Borrowing, which shall be a Business Day; 

(iii) whether such Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing; 

(iv) in the case of a Eurodollar Borrowing, the initial Interest Period to be applicable thereto, which shall be a period
contemplated by the definition of the term “Interest Period”; and 
 (v) the location and number of the
Borrower’s account to which funds are to be disbursed, which shall comply with the requirements of Section 2.07. 
 If no election as to
the Type of Borrowing is specified in a Borrowing Request delivered pursuant to Section 2.03, then the requested Borrowing shall be an ABR Borrowing. If no Interest Period is specified with respect to any requested Eurodollar Borrowing,
then the Borrower shall be deemed to have selected an Interest Period of one month’s duration. Promptly following receipt of a Borrowing Request in accordance with this Section, the Administrative Agent shall advise each Revolving Lender of the
details thereof and of the amount of such Lender’s Loan to be made as part of the requested Borrowing. 
 Section 2.04
Extension of Maturity Date. 
 (a) The Borrower shall have the right, upon delivering written notice to the Administrative Agent no
less than three Business Days prior to August 3, 2015, to extend the Availability Period to the date that is 364 days after the Closing Date. The extension of the Availability Period shall be subject solely to payment by the Borrower, on or
prior to August 3, 2015, of the Extension Fee referred to in the Fee Letter. On August 3, 2015, if such Extension Fee has been paid (such date, subject to payment of such Extension Fee, the “Extension Effective Date”),
(i) the Availability Period shall be extended to the date that is 364 days after the Closing Date without the action of any other person and (ii) the Maturity Date shall be construed to mean February 2, 2016, for all purposes under
this Agreement and each other Loan Document. 

  
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 Section 2.05 [Reserved]. 

Section 2.06 [Reserved]. 

Section 2.07 Funding of Borrowings. 

(a) Each Lender shall make each Loan to be made by it hereunder on the proposed date thereof by wire transfer of immediately available funds
by 1:00 p.m., New York City time, to the account of the Administrative Agent most recently designated by it for such purpose by notice to the Lenders. The Administrative Agent will make such Loans available to the Borrower by promptly crediting the
amounts so received, in like funds, to an account designated by the Borrower in the applicable Borrowing Request. 
 (b) Unless the
Administrative Agent shall have received notice from a Revolving Lender prior to the proposed date of any Borrowing that such Lender will not make available to the Administrative Agent such Lender’s Pro Rata Share of such Borrowing, the
Administrative Agent may assume that such Lender has made such Pro Rata Share available on such date in accordance with this Section 2.07 and may, but shall not be required to, in reliance upon such assumption, make available to the
Borrower a corresponding amount. In such event, if a Revolving Lender has not in fact made its Pro Rata Share of the Borrowing available to the Administrative Agent, then the applicable Lender and the Borrower severally agree to pay to the
Administrative Agent forthwith on demand such corresponding amount with interest thereon, for each day from and including the date such amount is made available to the Borrower to but excluding the date of payment to the Administrative Agent, at
(i) in the case of a payment to be made by such Lender, the greater of the Federal Funds Effective Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation and (ii) in the
case of a payment to be made by the Borrower, the interest rate applicable to ABR Loans. If the Borrower and such Lender shall pay such interest to the Administrative Agent for the same or an overlapping period, the Administrative Agent shall
promptly remit to the Borrower the amount of such interest paid by the Borrower for such period. If such Lender pays its Pro Rata Share of the applicable Borrowing to the Administrative Agent, then the amount so paid shall constitute such
Lender’s Loan included in such Borrowing. Any payment by the Borrower shall be without prejudice to any claim the Borrower may have against a Revolving Lender that shall have failed to make such payment to the Administrative Agent. 

Section 2.08 Interest Elections. 

(a) Each Borrowing initially shall be of the Type specified in the applicable Borrowing Request and, in the case of a Eurodollar Borrowing,
shall have an initial Interest Period as specified in such Borrowing Request. Thereafter, the Borrower may elect to convert such Borrowing to a different Type or to continue such Borrowing and, in the case of a Eurodollar Borrowing, may elect
Interest Periods therefor, all as provided in this Section. The Borrower may elect different options with respect to different portions of the affected Borrowing, in which case each such portion shall be allocated ratably among the Revolving Lenders
holding the Loans comprising such Borrowing, and the Loans comprising each such portion shall be considered a separate Borrowing. 

  
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 (b) To make an election pursuant to this Section, the Borrower shall notify the Administrative
Agent of such election by telephone by the time that a Borrowing Request would be required under Section 2.03 if the Borrower were requesting a Borrowing of the Type resulting from such election to be made on the effective date of such
election. Each such telephonic Interest Election Request shall be irrevocable and shall be confirmed promptly by hand delivery, fax or emailed pdf to the Administrative Agent of a written Interest Election Request signed by the Borrower. 

(c) Each telephonic and written Interest Election Request shall specify the following information in compliance with Section 2.03:

 (i) the Borrowing to which such Interest Election Request applies and, if different options are being elected with respect
to different portions thereof, the portions thereof to be allocated to each resulting Borrowing (in which case the information to be specified pursuant to clauses (iii) and (iv) below shall be specified for each resulting Borrowing); 

(ii) the effective date of the election made pursuant to such Interest Election Request, which shall be a Business Day; 

(iii) whether the resulting Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing; and 

(iv) if the resulting Borrowing is a Eurodollar Borrowing, the Interest Period to be applicable thereto after giving effect to
such election, which shall be a period contemplated by the definition of the term “Interest Period”. 
 If any such Interest Election Request
requests a Eurodollar Borrowing but does not specify an Interest Period, then the Borrower shall be deemed to have selected an Interest Period of one month’s duration. 

(d) Promptly following receipt of an Interest Election Request, the Administrative Agent shall advise each Revolving Lender of the details
thereof and of such Lender’s portion of each resulting Borrowing. 
 (e) If the Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Borrowing prior to the end of the Interest Period applicable thereto, then, unless such Borrowing is repaid as provided herein, at the end of such Interest Period such Borrowing shall be converted to an ABR
Borrowing. Notwithstanding any contrary provision hereof, if an Event of Default has occurred and is continuing and the Administrative Agent, at the request of the Required Lenders, so notifies the Borrower, then, so long as an Event of Default is
continuing (i) no outstanding Borrowing of the Borrower may be converted to or continued as a Eurodollar Borrowing and (ii) unless repaid, each Borrowing of the Borrower shall be converted to an ABR Borrowing at the end of the Interest
Period applicable thereto. 

  
 30 

 (f) [Reserved]. 

Section 2.09 Termination and Reduction of Commitments. 

(a) Unless previously terminated, the Aggregate Commitments shall terminate on the Maturity Date. 

(b) WPZ may at any time terminate, or from time to time reduce, the Aggregate Commitments; provided that (i) each reduction of the
Aggregate Commitments shall be in an amount that is an integral multiple of $1,000,000 and not less than $5,000,000 and (ii) WPZ shall not terminate or reduce the Aggregate Commitments if, after giving effect to any concurrent prepayment of the
Loans in accordance with Section 2.11, the Aggregate Outstanding Credit Exposure would exceed the Aggregate Commitments. 
 (c)
The Borrower shall notify the Administrative Agent of any election to terminate or reduce the Aggregate Commitments under paragraph (b) of this Section at least three Business Days prior to the effective date of such termination or reduction,
specifying such election and the effective date thereof. Promptly following receipt of any notice, the Administrative Agent shall advise the Revolving Lenders of the contents thereof. Each notice delivered by the Borrower pursuant to this Section
shall be irrevocable; provided that a notice of termination of the Aggregate Commitments may state that such notice is conditioned upon the effectiveness of other credit facilities or another event, in which case such notice may be revoked by
the Borrower (by notice to the Administrative Agent on or prior to the specified effective date) if such condition is not satisfied. Any termination or reduction of the Aggregate Commitments shall be permanent. Each reduction of the Aggregate
Commitments shall be made ratably among the Lenders in accordance with their respective Commitments, except as provided in clause (d) below. 

(d) WPZ may terminate the unused amount of the Commitment of a Defaulting Lender upon one Business Day’s prior notice to the
Administrative Agent (which will promptly notify the Lenders thereof), provided that such termination will not be deemed to be a waiver or release of any claim the Borrower, the Administrative Agent or any Lender may have against such
Defaulting Lender. 
 (e) In the event that (i) a Prepayment Event occurs, the Commitments shall reduce on the fifth Business Day
following receipt of the Net Cash Proceeds attributable to such Prepayment Event in an amount equal such Net Cash Proceeds (whether or not any prepayment is required to be made in accordance with Section 2.11(b) of this Agreement) and
(ii) the “Aggregate Commitments” (as defined in the Existing Credit Agreement) exceeds $3,500,000,000 (with such increase effectuated in accordance with the terms of the Existing Credit Agreement), the Commitments shall reduce in an
amount equal to such incremental “Commitments” (as defined in the Existing Credit Agreement). 
 (f) Notwithstanding the
foregoing, all of the provisions of the Loan Documents which by their terms survive termination of the Commitments, including, without limitation, those provisions set forth in Section 9.06, shall survive and not be deemed terminated,
but shall remain in full force and effect. 

  
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 Section 2.10 Repayment of Loans; Evidence of Debt. 

(a) The Borrower hereby unconditionally promises to pay to the Administrative Agent for the ratable account of each Lender the then unpaid
principal amount of each Loan (and all accrued and unpaid interest thereon) made to the Borrower on the Maturity Date. 
 (b) Each Lender
shall maintain in accordance with its usual practice an account or accounts evidencing the indebtedness of the Borrower to such Lender resulting from each Loan made by such Lender, including the amounts of principal and interest payable and paid to
such Lender from time to time hereunder. 
 (c) The Administrative Agent shall maintain accounts in which it shall record (i) the
amount of each Loan made hereunder, the Type thereof and the Interest Period applicable thereto, (ii) the amount of any principal or interest due and payable or to become due and payable from the Borrower to each Lender hereunder and
(iii) the amount of any sum received by the Administrative Agent hereunder for the account of the Lenders and each Lender’s share thereof. 

(d) The entries made in the accounts maintained pursuant to paragraph (b) or (c) of this Section shall be prima facie
evidence of the existence and amounts of the obligations recorded therein; provided that the failure of any Lender or the Administrative Agent to maintain such accounts or any error therein shall not in any manner affect the obligation of the
Borrower to repay the Loans made to the Borrower in accordance with the terms of this Agreement. 
 (e) Any Lender may request that Loans
made by it be evidenced by a promissory note. In such event, the Borrower shall prepare, execute and deliver to such Lender a promissory note payable to the order of such Lender and substantially in the form of note attached hereto as Exhibit
E. Thereafter, the Loans evidenced by such promissory note and interest thereon shall at all times (including after assignment pursuant to Section 9.05) be represented by one or more promissory notes in such form payable to the order
of the payee named therein (or, if such promissory note is a registered note, to such payee and its registered assigns). 

Section 2.11 Prepayment of Loans. 

(a) Optional Prepayments. The Borrower shall have the right at any time and from time to time to prepay any Borrowing, in whole or in
part, subject to prior notice in accordance with paragraph (c) of this Section. 
 (b) Mandatory Prepayments. The Borrower shall
prepay the Loans, in each case, on a dollar-for-dollar basis, within five Business Days of receipt by Borrower of any Net Cash Proceeds referred to in this Section 2.11(b) with the lesser of (x) 100% of the Net Cash Proceeds
attributable to each Prepayment Event specified below and (y) the aggregate amount of Loans outstanding on the date of prepayment: 

(i) 100% of the Net Cash Proceeds received from any incurrence of Indebtedness of the Borrower for borrowed money (including
Hybrid Securities and debt securities convertible into equity) by the Borrower (excluding (A) intercompany debt among the Borrower and/or its subsidiaries, (B) borrowings under the Existing Credit Agreement (including any increases thereto
in accordance with the terms thereof) and under any capital lease, purchase money debt and equipment financings, and (C) issuances of commercial paper; 

  
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 (ii) 100% of the Net Cash Proceeds received from the issuance of any Capital
Stock by the Borrower (other than issuances pursuant to employee stock plans, directors compensations or similar arrangements, pursuant to the ACMP Merger); 

(iii) 100% of the Net Cash Proceeds received from any Asset Sale of Borrower in excess of $75,000,000 with respect to any
single Asset Sale and $400,000,000 in the aggregate with respect to all Asset Sales other than (A) sales, transfers or other dispositions of inventory, used or surplus equipment and vehicles in the ordinary course of business, (B) leases,
subleases, licenses or sublicenses of real, personal or intellectual property in the ordinary course of business, and (C) sales, transfers or other dispositions of property to the extent that (x) such property is exchanged for credit
against the purchase price of similar replacement property or (y) the proceeds of such sale, transfer or other disposition are promptly applied to the purchase price of such replacement property. 

(c) The Borrower shall notify the Administrative Agent by telephone (confirmed by hand delivery, fax or emailed pdf) of any prepayment under
Section 2.11(a) not later than 11:00 a.m., New York City time on the date of prepayment. Each such notice shall be irrevocable and shall specify the prepayment date and the principal amount of each Borrowing or portion thereof to be prepaid;
provided that, any such notice of prepayment may be conditioned upon the effectiveness of other credit facilities or another event. Promptly following receipt of any such notice relating to a Borrowing, the Administrative Agent shall advise
the Lenders of the contents thereof. Each partial prepayment of any Borrowing under Section 2.11(a) shall be in an amount that is an integral multiple of $1,000,000 and not less than $5,000,000. Each prepayment of a Borrowing shall be applied
ratably to the Loans included in the prepaid Borrowing. Prepayments shall be accompanied by accrued interest to the extent required by Section 2.13. 

Section 2.12 Fees. 

(a) The Borrower agrees to pay to the Administrative Agent for the account of each Lender (other than a Defaulting Lender) a commitment fee on
the daily average unused amount of the Commitment of such Lender for the period from and including the Effective Date up to, but excluding, the date on which the Aggregate Commitments have been terminated at the Applicable Rate for commitment fees.
Accrued commitment fees shall be payable in arrears on the last Business Day of March, June, September and December of each year and on the date on which the Aggregate Commitments terminate, commencing on the first such date to occur after the
Effective Date. All commitment fees shall be computed on the basis of a year of 365 days (or 366 days in a leap year) and shall be payable for the actual number of days elapsed (including the first day but excluding the last day). 

(b) [Reserved]. 
 (c) WPZ agrees
to pay to the Administrative Agent, for its own account, fees payable in the amounts and at the times separately agreed upon between WPZ and the Administrative Agent as set forth in the applicable Fee Letter. 

(d) [Reserved.] 

  
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 (e) All fees payable hereunder shall be paid on the dates due, in immediately available funds, to
the Administrative Agent for distribution, in the case of facility fees and participation fees, to the Revolving Lenders. Fees paid shall not be refundable under any circumstances. 

(f) Anything herein to the contrary notwithstanding, during such period as a Lender is a Defaulting Lender, such Defaulting Lender will not be
entitled to any fees accruing during such period pursuant to this Section 2.12 (without prejudice to the rights of the Lenders other than Defaulting Lenders in respect of such fees) nor shall any such fee be payable by the Borrower. 

Section 2.13 Interest. 

(a) The Loans comprising each ABR Borrowing shall bear interest on each day at the Alternate Base Rate for such day plus the Applicable Rate.

 (b) The Loans comprising each Eurodollar Borrowing shall bear interest at the LIBO Rate for the Interest Period in effect for such
Borrowing plus the Applicable Rate. 
 (c) [Reserved]. 

(d) Notwithstanding the foregoing, upon the occurrence and during the continuance of any Event of Default, if any principal of or interest on
any Loan or any fee or other amount payable by the Borrower hereunder is not paid when due, whether at stated maturity, upon acceleration or otherwise, such overdue amount shall bear interest, after as well as before judgment, at a rate per annum
equal to (i) in the case of overdue principal of any Loan, 2% plus the rate otherwise applicable to such Loan as provided in the preceding paragraphs of this Section or (ii) in the case of any other amount, 2% plus the rate applicable to
ABR Loans as provided in paragraph (a) of this Section. 
 (e) Accrued interest on each Loan shall be payable in arrears on each
Interest Payment Date for such Loan and upon termination of the Aggregate Commitments; provided that (i) interest accrued pursuant to paragraph (d) of this Section shall be payable on demand, (ii) in the event of any repayment
or prepayment of any Loan (other than a prepayment of an ABR Loan prior to the end of the Availability Period), accrued interest on the principal amount repaid or prepaid shall be payable on the date of such repayment or prepayment and (iii) in
the event of any conversion of any Eurodollar Loan prior to the end of the current Interest Period therefor, accrued interest on such Loan shall be payable on the effective date of such conversion. 

(f) All interest determined by reference to the LIBO Rate or clauses (b) or (c) of the definition of Alternate Base Rate shall be
computed on the basis of a year of 360 days, and all other interest shall be computed on the basis of a year of 365 days (or 366 days in a leap year), and in each case shall be payable for the actual number of days elapsed (including the first day
but excluding the last day). The applicable Alternate Base Rate or LIBO Rate shall be determined by the Administrative Agent, and such determination shall be conclusive absent manifest error. 

(g) The Borrower shall pay to each Lender, so long as such Lender shall be required under regulations of the Board of Governors of the Federal
Reserve System of the United States of America to maintain reserves with respect to liabilities or assets consisting of or including Eurocurrency Liabilities, additional interest on the unpaid principal amount of each Borrowing of

  
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such Lender during such periods as such Borrowing is a Eurodollar Borrowing, from the date of such Borrowing until such principal amount is paid in full, at an interest rate per annum equal at
all times to the remainder obtained by subtracting (i) the LIBO Rate for the Interest Period in effect for such Eurodollar Borrowing from (ii) the rate obtained by dividing such LIBO Rate by a percentage equal to 100% minus the Eurodollar
Rate Reserve Percentage of such Lender for such Interest Period. Such additional interest shall be determined by such Lender. The Borrower shall from time to time, within 15 days after demand (which demand shall be accompanied by a certificate
comporting with the requirements set forth in Section 2.15(c)) by such Lender (with a copy of such demand and certificate to the Administrative Agent) pay to the Lender giving such notice such additional interest; provided,
however, that Borrower shall not be required to pay to such Lender any portion of such additional interest that accrued more than 90 days prior to any such demand, unless such additional interest was not determinable on the date that is
90 days prior to such demand. 
 Section 2.14 Alternate Rate of Interest. If prior to the commencement of any Interest
Period for a Eurodollar Borrowing: 
 (a) the Administrative Agent determines (which determination shall be conclusive absent manifest
error) that adequate and reasonable means do not exist for ascertaining the LIBO Rate, as applicable, for such Interest Period; or 
 (b)
the Administrative Agent is advised by the Required Lenders that the LIBO Rate, as applicable, for such Interest Period will not adequately and fairly reflect the cost to such Lenders of making or maintaining their Loans included in such Borrowing
for such Interest Period; 
 then the Administrative Agent shall give notice thereof to the Borrower and the Lenders by telephone or telecopy as promptly as
practicable thereafter and, until the Administrative Agent notifies the Borrower and the Lenders that the circumstances giving rise to such notice no longer exist, (i) any Interest Election Request that requests the conversion of any Borrowing
to, or continuation of any Borrowing as, a Eurodollar Borrowing shall be ineffective, and (ii) if any Borrowing Request requests a Eurodollar Borrowing, such Borrowing shall be made as an ABR Borrowing; provided that if the circumstances
giving rise to such notice affect only one Type of Borrowings, then the other Type of Borrowings shall be permitted. 
 Section 2.15
Increased Costs. 
 (a) Increased Costs Generally. If any Change in Law shall: 

(i) impose, modify or deem applicable any reserve, special deposit, compulsory loan, insurance charge or similar requirement
against assets of, deposits with or for the account of, or credit extended or participated in by, any Lender; 
 (ii) subject
any Recipient to any Tax of any kind whatsoever with respect to this Agreement or any Eurodollar Loan made by it, or change the basis of taxation of payments to such Recipient in respect thereof (except for any Indemnified Taxes and the imposition
of, or any change in the rate of, any Tax described in clauses (a)(ii) through (d) of the definition of Excluded Taxes payable by such Recipient); or 

(iii) impose on any Lender or the London interbank market any other condition, cost or expense affecting this Agreement or
Eurodollar Loans made by such Lender; 

  
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 and the result of any of the foregoing shall be to increase the cost to such Lender of making, funding or
maintaining any Loan (or of maintaining its obligation to make any such Loan), or to reduce the amount of any sum received or receivable by such Lender hereunder (whether of principal, interest or any other amount) then, upon request of such Lender,
the Borrower will pay to such Lender such additional amount or amounts as will compensate such Lender for such additional costs incurred or reduction suffered, in each case to the extent applicable to the Loans. 

(b) Capital Requirements. If any Lender determines that any Change in Law affecting such Lender or any lending office of such Lender or
such Lender’s holding company, if any, regarding capital or liquidity requirements has or would have the effect of reducing the rate of return on such Lender’s capital or on the capital of such Lender’s holding company, if any, as a
consequence of this Agreement, the commitments of such Lender or the Loans made by, to a level below that which such Lender or such Lender’s holding company could have achieved but for such Change in Law (taking into consideration such
Lender’s policies and the policies of such Lender’s holding company with respect to capital adequacy or liquidity), then from time to time the Borrower will pay to such Lender such additional amount or amounts as will compensate such
Lender or such Lender’s holding company for any such reduction suffered, in each case to the extent applicable to the Loans. 
 (c)
Certificates for Reimbursement. A certificate of a Lender setting forth the amount or amounts necessary to compensate such Lender or its holding company, as the case may be, as specified in paragraph (a) or (b) of this Section,
showing the computation thereof and delivered to the Borrower shall be conclusive absent manifest error. Such certificate shall further certify that such Lender is making similar demands of its other similarly situated borrowers. The Borrower shall
pay such Lender the amount shown as owed by it and due on any such certificate within 10 days after receipt thereof. 
 (d) Delay in
Requests. Failure or delay on the part of any Lender to demand compensation pursuant to this Section shall not constitute a waiver of such Lender’s right to demand such compensation, provided that Borrower shall not be required to
compensate a Lender pursuant to this Section for any increased costs incurred or reductions suffered more than ninety days prior to the date that such Lender notifies the Borrower of the Change in Law giving rise to such increased costs or
reductions and of such Lender’s intention to claim compensation therefor (except that, if the Change in Law giving rise to such increased costs or reductions is retroactive, then the ninety day period referred to above shall be extended to
include the period of retroactive effect thereof). 
 Section 2.16 Break Funding Payments. In the event of (a) the payment
of any principal of any Eurodollar Loan other than on the last day of an Interest Period applicable thereto (including as a result of an Event of Default), (b) the conversion of any Eurodollar Loan other than on the last day of the Interest
Period applicable thereto, (c) the failure to borrow, convert, continue or prepay any Loan on the date specified in any notice delivered pursuant hereto (regardless of whether such notice may be revoked under Section 2.11(b) and is
revoked in accordance therewith), or (d) the assignment of any Eurodollar Loan other than on the last day of the Interest Period applicable thereto as a result of a request by the Borrower pursuant to Section 2.19, then, in any such
event, the Borrower shall 

  
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compensate each Lender for the loss, cost and expense (excluding loss of anticipated profits) attributable to such event. A certificate of any Lender setting forth, in reasonable detail showing
the computation thereof, any amount or amounts that such Lender is entitled to receive pursuant to this Section shall be delivered to the Borrower and shall be conclusive absent manifest error. The Borrower shall pay such Lender the amount shown as
due on any such certificate within 10 days after receipt thereof, if such certificate complies herewith. 
 Section 2.17 Taxes.

 (a) Payments Free of Taxes. Any and all payments by or on account of any obligation of the Borrower hereunder or under any other
Loan Document shall be made free and clear of and without reduction or withholding for any Taxes, provided that if an applicable withholding agent shall be required by applicable law to deduct or withhold any Taxes from such payments, then
(i) if such Tax is an Indemnified Tax, the sum payable by the Borrower shall be increased as necessary so that after making all required deductions or withholdings (including deductions applicable to additional sums payable under this Section)
the applicable Recipient receives an amount equal to the sum it would have received had no such deductions or withholdings been made, (ii) the applicable withholding agent shall make such deductions and (iii) such withholding agent shall
timely pay the full amount deducted to the relevant Governmental Authority in accordance with applicable law. 
 (b) Payment of Other
Taxes by Borrower. Without limiting the provisions of paragraph (a) above, the Borrower shall timely pay any Other Taxes related to it to the relevant Governmental Authority in accordance with applicable law. 

(c) Indemnification by Borrower. The Borrower shall indemnify each Recipient within 10 days after demand therefor, for the full amount
of any Indemnified Taxes or Other Taxes (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to amounts payable under this Section) payable or paid by such Recipient or required to be withheld or deducted from a payment
to such Recipient and any penalties, interest and reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted by the relevant Governmental
Authority. A certificate as to the amount of such payment or liability delivered to the Borrower by a Recipient (with a copy to the Administrative Agent), or by the Administrative Agent on its own behalf or on behalf of a Recipient shall be
conclusive absent manifest error. 
 (d) Indemnification by the Lenders. Each Lender shall severally indemnify the Administrative
Agent, within 10 days after demand therefor, for (i) any Indemnified Taxes attributable to such Lender (but only to the extent that the Borrower has not already indemnified the Administrative Agent for such Indemnified Taxes and without
limiting the obligation of the Borrower to do so), (ii) any Taxes attributable to such Lender’s failure to comply with the provisions of Section 9.05(d) relating to the maintenance of a Participant Register and (iii) any
Excluded Taxes attributable to such Lender, in each case, that are payable or paid by the Administrative Agent in connection with the Borrower, and any reasonable expenses arising therefrom or with respect thereto, whether or not such Taxes were
correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to any Lender by the Administrative Agent shall be conclusive absent manifest error. Each Lender
hereby authorizes the Administrative Agent to set off and apply any and all amounts at any time owing to 

  
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such Lender under any Loan Document or otherwise payable by the Administrative Agent to the Lender from any other source against any amount due to the Administrative Agent under this paragraph
(d). 
 (e) Evidence of Payments. As soon as practicable after any payment of Indemnified Taxes or Other Taxes by the Borrower to a
Governmental Authority pursuant to this Section 2.17, the Borrower shall deliver to the Administrative Agent the original or a certified copy of a receipt issued by such Governmental Authority evidencing such payment, a copy of the
return reporting such payment or other evidence of such payment reasonably satisfactory to the Administrative Agent. 
 (f) Status of
Lenders. 
 (i) Any Lender that is entitled to an exemption from or reduction of withholding Tax with respect to payments
made under any Loan Document shall deliver to the Borrower and the Administrative Agent, at the time or times prescribed by applicable law or reasonably requested by the Borrower or the Administrative Agent, such properly completed and executed
documentation prescribed by applicable law or reasonably requested by the Borrower or the Administrative Agent as will permit such payments to be made without withholding or at a reduced rate of withholding. In addition, any Lender, if requested by
the Borrower or the Administrative Agent, shall deliver such other documentation prescribed by applicable requirement of law or reasonably requested by the Borrower or the Administrative Agent as will enable the Borrower or the Administrative Agent
to determine whether or not such Lender is subject to backup withholding or information reporting requirements. Notwithstanding anything to the contrary in the preceding two sentences, the completion, execution and submission of such documentation
(other than such documentation either set forth in Section 2.17(f)(ii)(A), (ii)(B) and (ii)(D) below) shall not be required if in the Lender’s reasonable judgment such completion, execution or submission would subject
such Lender to any material unreimbursed cost or expense or would materially prejudice the legal or commercial position of such Lender. 

(ii) Without limiting the generality of the foregoing, 

(A) any Lender that is a U.S. Person shall deliver to the Borrower and the Administrative Agent on or prior to the date on
which such Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of the Borrower or the Administrative Agent), executed originals of IRS Form W-9 certifying that such Lender is exempt from U.S.
Federal backup withholding Tax; 
 (B) any Foreign Lender shall deliver to the Borrower and the Administrative Agent (in such
number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon the reasonable request of the Borrower or the Administrative
Agent, but only if such Foreign Lender is legally entitled to do so), whichever of the following is applicable: (i) in the case of a Foreign Lender claiming the benefits of an income Tax treaty to which the United States is a party
(x) with respect to payments of interest under any Loan Document, 

  
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executed originals of IRS Form W-8BEN or IRS Form W-8BEN-E establishing an exemption from, or reduction of, U.S. Federal withholding Tax pursuant to the “interest” article of such Tax
treaty and (y) with respect to any other applicable payments under any Loan Document, IRS Form W-8BEN or IRS Form W-8BEN-E establishing an exemption from, or reduction of, U.S. Federal withholding Tax pursuant to the “business
profits” or “other income” article of such Tax treaty; (ii) executed originals of IRS Form W-8ECI; (iii) in the case of a Foreign Lender claiming the benefits of the exemption for portfolio interest under Section 881(c)
of the Code, (x) a certificate substantially in the form of Exhibit F-1 to the effect that such Foreign Lender is not a “bank” within the meaning of Section 881(c)(3)(A) of the Code, a “10 percent shareholder” of
the Borrower within the meaning of Section 881(c)(3)(B) of the Code, or a “controlled foreign corporation” described in Section 881(c)(3)(C) of the Code (a “U.S. Tax Compliance Certificate”) and (y) executed
originals of IRS Form W-8BEN or IRS Form W-8BEN-E; or (iv) to the extent a Foreign Lender is not the beneficial owner, executed originals of IRS Form W-8IMY, accompanied by IRS Form W-8ECI, IRS Form W-8BEN or IRS Form W-8BEN-E, a U.S. Tax
Compliance Certificate substantially in the form of Exhibit F-2 or Exhibit F-3, IRS Form W-9, and/or other certification documents from each beneficial owner, as applicable; provided that if the Foreign Lender is a partnership
and one or more direct or indirect partners of such Foreign Lender are claiming the portfolio interest exemption, such Foreign Lender may provide a U.S. Tax Compliance Certificate substantially in the form of Exhibit F-4 on behalf of each
such direct and indirect partner; 
 (C) any Foreign Lender shall, to the extent it is legally entitled to do so, deliver to
the Borrower and the Administrative Agent (in such number of copies as shall be requested by the recipient) on or prior to the date on which such Foreign Lender becomes a Lender under this Agreement (and from time to time thereafter upon the
reasonable request of the Borrower or the Administrative Agent), executed originals of any other form prescribed by an applicable law as a basis for claiming exemption from or a reduction in U.S. Federal withholding Tax, duly completed, together
with such supplementary documentation as may be prescribed by applicable law to permit the Borrower or the Administrative Agent to determine the withholding or deduction required to be made; and 

(D) if a payment made to a Lender under any Loan Document would be subject to any withholding Tax imposed by FATCA if such
Lender were to fail to comply with the requirements of FATCA (including those contained in Section 1471(b) or 1472(b) of the Code), such Lender shall deliver to the Borrower and the Administrative Agent at the time or times prescribed by law
and at such time or times reasonably requested by the Borrower or the Administrative Agent, such documentation prescribed by applicable law (including as prescribed by Section 1471(b)(3)(C)(i) of the Code) and such additional documentation
reasonably requested by the Borrower or the Administrative Agent as may be necessary for the Borrower and the Administrative Agent to comply with their obligations under FATCA, to determine that such Lender has or has not complied with such
Lender’s obligations under FATCA or to determine the amount to deduct and withhold from such payment. Solely for purposes of this clause (D), “FATCA” shall include any amendments made to FATCA after the date of this Agreement. 

  
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 Each Lender agrees that if any form or certification it previously delivered expires or becomes obsolete or
inaccurate in any respect, it shall update such form or certification or promptly notify the Borrower and the Administrative Agent in writing of its legal inability to do so. 

(g) Treatment of Certain Refunds. If any Recipient determines in its sole discretion exercised in good faith, that it has received a
refund of any Taxes as to which it has been indemnified by the Borrower or with respect to which the Borrower has paid pursuant to this Section 2.17 (including by the payment of additional amounts pursuant to this
Section 2.17), such Recipient shall pay to the Borrower an amount equal to such refund (but only to the extent of indemnity payments made, or additional amounts paid by the Borrower under this Section with respect to the Taxes giving
rise to such refund), net of reasonable out-of-pocket expenses directly related to the receipt of such refund by the Recipient and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund)
provided that, the Borrower, upon the request of such Recipient, agrees to repay the amount paid over to the Borrower pursuant to this paragraph (g) (plus any penalties, interest or other charges imposed by the relevant Governmental
Authority) to the Recipient in the event the Recipient is required to repay such refund to such Governmental Authority. Notwithstanding anything to the contrary in this paragraph (g), in no event will the applicable Recipient be required to pay any
amount to the Borrower pursuant to this paragraph (g) the payment of which would place such Recipient in a less favorable net after-Tax position than the Recipient would have been in if the indemnification payments or additional amounts giving
rise to such refund had never been paid. This paragraph shall not be construed to require the Administrative Agent or Any Lender to make available its Tax returns (or any other information relating to its Taxes that it deems confidential) to the
Borrower or any other Person. 
 (h) [Reserved.] 

(i) Survival. Each party’s obligations under this Section 2.17 shall survive the resignation or replacement of the
Administrative Agent or any assignment of rights by, or the replacement of, a Lender, the termination of the Commitments and the repayment, satisfaction or discharge of all obligations under any Loan Document. 

Section 2.18 Payments Generally; Pro Rata Treatment; Sharing of Set-offs. 

(a) The Borrower shall make each payment required to be made by it hereunder (whether of principal, interest, or fees, or of amounts payable
under Section 2.15, 2.16 or 2.17, or otherwise) prior to 1:00 p.m., New York City time, on the date when due, in immediately available funds, without set-off or counterclaim. Any amounts received after such time on any date
may, in the discretion of the Administrative Agent, be deemed to have been received on the date of such payment or on the next succeeding Business Day for purposes of calculating interest and fees thereon. All such payments shall be made to the
Administrative Agent at its offices at Barclays Bank PLC, 745 Seventh Avenue, New York, NY 10019, Attention: U.S. Loan Operations. The Administrative Agent shall distribute any such payments received by it for the account of any other Person to the
appropriate recipient promptly following receipt thereof. If any payment hereunder shall be due on a day that is not a Business Day, the date for payment shall be extended to the next succeeding Business Day, and, in the case of any payment accruing
interest, interest thereon shall be payable for the period of such extension. All payments hereunder shall be made in Dollars. 

  
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 (b) If at any time insufficient funds are received by and available to the Administrative Agent
to pay fully all amounts of principal, interest and fees then due hereunder, such funds shall be applied (i) first, towards payment of interest and fees then due hereunder, ratably among the parties entitled thereto in accordance with the
amounts of interest and fees then due to such parties, and (ii) second, towards payment of principal then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of principal then due to such parties. 

(c) If any Revolving Lender shall, by exercising any right of set-off or counterclaim or otherwise, obtain payment in respect of any principal
of or interest on any of its Loans resulting in such Lender receiving payment of a greater proportion of the aggregate amount of its Loans and accrued interest thereon than the proportion received by any other Revolving Lender, then the Revolving
Lender receiving such greater proportion shall purchase (for cash at face value) participations in the Loans of other Lenders to the extent necessary so that the benefit of all such payments shall be shared by the Revolving Lenders ratably in
accordance with the aggregate amount of principal of and accrued interest on their respective Loans; provided that (i) if any such participations are purchased and all or any portion of the payment giving rise thereto is recovered, such
participations shall be rescinded and the purchase price restored to the extent of such recovery, without interest, and (ii) the provisions of this Section 2.18(c) shall not be construed to apply to any payment made by the Borrower
pursuant to and in accordance with the express terms of this Agreement or any payment obtained by a Revolving Lender as consideration for the assignment of or sale of a participation in any of its Loans to any assignee or participant, other than to
the Borrower or any Subsidiary or Affiliate thereof (as to which the provisions of this paragraph shall apply). The Borrower consents to the foregoing and agrees, to the extent it may effectively do so under applicable law, that any Lender acquiring
a participation pursuant to this subsection (c) may exercise against the Borrower rights of set-off and counterclaim with respect to such participation as fully as if such Lender were a direct creditor of the Borrower in the amount of such
participation. 
 (d) [Reserved]. 

(e) If any Lender shall fail to make any payment required to be made by it pursuant to Sections 2.07(b) or 9.04(c), then the
Administrative Agent may, in its discretion (notwithstanding any contrary provision hereof), apply any amounts thereafter received by the Administrative Agent for the account of such Lender to satisfy such Lender’s obligations under such
Sections until all such unsatisfied obligations are fully paid. In the event that any Defaulting Lender exercises any such right of setoff, (x) all amounts so set off will be paid over immediately to the Administrative Agent for further
application in accordance with the provisions of Sections 2.07(b) or 9.04(c), and, pending such payment, will be segregated by such Defaulting Lender from its other funds and deemed held in trust for the benefit of the
Administrative Agent and the Lenders and (y) the Defaulting Lender will provide promptly to the Administrative Agent a statement describing in reasonable detail the obligations owing to such Defaulting Lender as to which it exercised such right
of setoff. 

  
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 Section 2.19 Mitigation Obligations; Replacement of Lenders. 

(a) If any Lender requests compensation under Section 2.13(g) or Section 2.15 or if the Borrower is required to
pay any Indemnified Taxes to any Lender or any Governmental Authority for the account of any Lender, then such Lender shall use reasonable efforts to designate a different lending office for funding or booking its Loans hereunder or to assign its
rights and obligations hereunder to another of its offices, branches or affiliates, if, in the judgment of such Lender, such designation or assignment (i) would eliminate or reduce amounts payable pursuant to Sections 2.13(g),
2.15 or 2.17, as the case may be, in the future and (ii) would not subject such Lender to any unreimbursed cost or expense and would not otherwise be disadvantageous to such Lender. If the Borrower is required to make any payment
under Sections 2.13(g), 2.15 or 2.17, the Borrower hereby agrees to pay all reasonable costs and expenses incurred by any Lender in connection with any such designation or assignment. Subject to the foregoing, Lenders agree to
use reasonable efforts to select lending offices which will minimize Indemnified Taxes and other costs and expenses for the Borrower. 
 (b)
If any Lender requests compensation under Section 2.13(g) or Section 2.15, or if the Borrower is required to pay any Indemnified Taxes to any Lender or any Governmental Authority for the account of any Lender pursuant to
Section 2.17, or if any Lender is a Defaulting Lender, or if any Lender fails to approve an amendment, waiver or other modification to this Agreement that requires the approval of all Lenders and at least the Required Lenders have
approved such amendment, waiver or other modification, then the Borrower may, at its sole expense and effort, upon notice to such Lender and the Administrative Agent, require such Lender to assign and delegate, without recourse (in accordance with
and subject to the restrictions contained in Section 9.05), all its interests, rights and obligations under this Agreement to an Eligible Assignee that shall assume such obligations (which assignee may be another Lender, if a Lender
accepts such assignment); provided that (i) the Borrower shall have received the prior written consent of the Administrative Agent, which consent shall not unreasonably be withheld or delayed, (ii) such Lender shall have received
payment of an amount equal to the outstanding principal of its Loans, accrued interest thereon, accrued fees and all other amounts payable to it hereunder and under the other Loan Documents (including any amounts under Section 2.16),
from the assignee (to the extent of such outstanding principal and accrued interest and fees) or the Borrower (in the case of all other amounts) and (iii) in the case of any such assignment resulting from a claim for compensation under
Section 2.13(g) or Section 2.15 or payments required to be made pursuant to Section 2.17, such assignment will result in a reduction in such compensation or payments. A Lender shall not be required to make any
such assignment and delegation if, prior thereto, as a result of a waiver by such Lender or otherwise, the circumstances entitling the Borrower to require such assignment and delegation cease to apply. If any Lender refuses to assign and delegate
all its interests, rights and obligations under this Agreement after the Borrower has required such Lender to do so as a result of a claim for compensation under Section 2.13(g) or Section 2.15 or payments required to be made
pursuant to Section 2.17, such Lender shall not be entitled to receive such compensation or required payments. 
 (c) If the
Borrower and the Administrative Agent agree in writing in their discretion that a Lender that is a Defaulting Lender should no longer be deemed to be a Defaulting Lender, the Administrative Agent will so notify the parties hereto, whereupon as of
the effective date specified in such notice and subject to any conditions set forth therein, such Lender will, to the extent applicable, purchase such portion of outstanding Loans of the other Revolving Lenders and/or make such other adjustments as
the Administrative Agent may determine to be necessary to cause the 

  
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Credit Exposure of the Revolving Lenders to be on a pro rata basis in accordance with their respective Commitments, whereupon such Lender will cease to be a Defaulting Lender and
will be a Non-Defaulting Lender (and such Credit Exposure of each Revolving Lender will automatically be adjusted on a prospective basis to reflect the foregoing); provided that no adjustments will be made retroactively with respect to fees
accrued or payments made by or on behalf of the Borrower while such Lender was a Defaulting Lender; and provided, further, that except to the extent otherwise expressly agreed by the affected parties, no change hereunder from Defaulting
Lender to Non-Defaulting Lender will constitute a waiver or release of any claim of any party hereunder arising from such Lender having been a Defaulting Lender. 

Section 2.20 [Reserved]. 

ARTICLE III 

REPRESENTATIONS AND WARRANTIES 

The Borrower, solely with respect to itself and, to the extent set forth below, its Subsidiaries, represents and warrants to the Lenders that,
on the Effective Date and on the date of each Borrowing, except with respect to Sections 3.07 and 3.08 in each case as specified therein, which shall only be represented and warranted as of the Effective Date as provided therein: 

Section 3.01 Organization; Powers. The Borrower and each of its Material Subsidiaries is validly existing and (if applicable) in
good standing under the laws of the jurisdiction of its organization, has all requisite power and authority to carry on its business in all material respects as now conducted and is qualified to do business in, and (if applicable) is in good
standing in, every jurisdiction where such qualification is required, except where the failure to do so or to be validly existing and in good standing or to have such power and authority, individually or in the aggregate, would not reasonably be
expected to result in a Material Adverse Effect. 
 Section 3.02 Authorization; Enforceability. The Transactions and the
performance of its obligations contemplated thereby are within the Borrower’s partnership powers, and have been duly authorized by all necessary partnership and, if required, partner action, as applicable. This Agreement has been duly executed
and delivered by the Borrower and constitutes a legal, valid and binding obligation of the Borrower, enforceable against the Borrower in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium or other
laws affecting creditors’ rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law. 

Section 3.03 Governmental Approvals; No Conflicts. No material authorization or approval or other action by, and no notice to or
filing with, any Governmental Authority is required for the due execution, delivery and performance by the Borrower of any Loan Document to which it is a party, or the consummation of the transactions contemplated thereby. The execution, delivery
and performance by the Borrower of the Loan Documents to which it is shown as being a party and the consummation of the transactions contemplated thereby do not contravene (a) the Borrower’s organizational documents or (b) any law or
any restriction under any material agreement binding on the Borrower and will not result in or require the creation or imposition of any Lien prohibited by this Agreement. 

  
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 Section 3.04 Financial Condition. Pre-Merger WPZ has heretofore furnished to the
Lenders its consolidated balance sheet and statements of income and cash flows (a) as of and for the fiscal year ended December 31, 2013, reported on by Ernst & Young LLP, independent public accountants, and (b) as of and for
the fiscal quarter and the portion of the fiscal year ended September 30, 2014. Such financial statements (i) were prepared in accordance with GAAP, except as otherwise expressly noted therein, and (ii) present fairly, in all material
respects, the financial position and results of operations and cash flows of the businesses of Pre-Merger WPZ and its consolidated subsidiaries as of such dates and for such periods in accordance with GAAP. 

Section 3.05 Litigation. Except as set forth in the annual report on Form 10-K for the year ended December 31, 2013, the
quarterly reports on Form 10-Q or current reports on Form 8-K filed subsequent thereto but prior to the Closing Date, or any amendments thereof filed subsequent thereto but prior to the Closing Date, in each case of the Borrower or Pre-Merger WPZ,
or as set forth in the registration statement on Form S-4 of WPZ, or any amendments thereof filed subsequent thereto but prior to the Closing Date, there are no actions, suits or proceedings by or before any arbitrator or Governmental Authority
pending against or, to the knowledge of the Borrower, threatened in writing against the Borrower or any of its Subsidiaries (i) as to which there is a reasonable possibility of an adverse determination and that would reasonably be expected,
individually or in the aggregate, to result in a Material Adverse Effect or (ii) that purport to adversely affect the legality, validity and enforceability of the Loan Documents and are non-frivolous (as reasonably determined by the
Administrative Agent); provided, that this representation, when made, shall not constitute an admission that any action, suit or proceeding set forth in any annual report on Form 10-K, any quarterly report on Form 10-Q, any current report on
Form 8-K, or set forth in the Form S-4, or any amendments to any of the foregoing, in each case referred to above would result in a Material Adverse Effect due to an adverse determination, if any. 

Section 3.06 Environmental Matters. Except as set forth in the annual report on Form 10-K for the year ended December 31,
2013, the quarterly reports on Form 10-Q or current reports on Form 8-K filed subsequent thereto but prior to the Closing Date, or any amendments thereof filed subsequent thereto but prior to the Closing Date, in each case of the Borrower or
Pre-Merger WPZ, or as set forth in the registration statement on Form S-4 of WPZ, or any amendments thereof filed subsequent thereto but prior to the Closing Date, the Borrower and its Subsidiaries have reasonably concluded that they: (a) are
in compliance with all applicable Environmental Laws, except to the extent that any non-compliance would not reasonably be expected to have a Material Adverse Effect with respect to the Borrower; (b) are not subject to any judicial,
administrative, government, regulatory or arbitration proceeding alleging the violation of any applicable Environmental Laws, except to the extent that any such proceeding would not reasonably be expected to have a Material Adverse Effect with
respect to the Borrower; (c) are not subject to any federal, state, local or foreign review, audit or investigation which would reasonably be expected to lead to a proceeding referred to in (b) above that would reasonably be expected to
have a Material Adverse Effect with respect to the Borrower; (d) have no actual knowledge that any of their predecessors in title to any of their property and assets are the subject of any currently pending federal, state, local or foreign
review, audit or investigation which would reasonably be expected to lead to a proceeding referred to in (b) above that would reasonably be expected to have a Material Adverse Effect with respect to the Borrower; and (e) possess, and are
in compliance with, or have applied for, all approvals, licenses, permits, consents and other authorizations which are necessary under any applicable Environmental Laws to conduct their business, except to the extent that the failure to possess, or
be in compliance with, any of the foregoing would not reasonably be expected to have a Material Adverse Effect with respect to the Borrower. 

  
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 Section 3.07 Disclosure. As of the Effective Date only, none of the reports,
financial statements, certificates or other written information furnished by or on behalf of the Borrower (including by or on behalf of Pre-Merger WPZ) in connection with the Transactions to the Administrative Agent or any Lender on or prior to the
Effective Date (as modified or supplemented by other information so furnished on or prior to the Effective Date), taken as a whole, contains any material misstatement of fact or omits to state any material fact necessary to make the statements
therein, in the light of the circumstances under which they were made, not materially misleading, provided that, with respect to any projected financial information, the Borrower represents only that such information was prepared in good
faith based upon assumptions believed by the Borrower to be reasonable at the time (it being recognized, however, that projections as to future events are not to be viewed as facts and that the actual results during the period or periods covered by
any projections may materially differ from the projected results). 
 Section 3.08 Solvency. As of the Effective Date only,
after giving effect to the Transactions (including each Loan) to be consummated on such date, the Borrower, individually and together with its Subsidiaries, is Solvent. 

Section 3.09 ERISA. No ERISA Event has occurred or is reasonably expected to occur that, when taken together with all other such
ERISA Events for which liability is reasonably expected to occur, would reasonably be expected to result in a Material Adverse Effect in respect of the Borrower. 

Section 3.10 Investment Company Status. The Borrower is not an “investment company” as defined in, or subject to
regulation under, the Investment Company Act of 1940. 
 Section 3.11 Margin Securities. The Borrower is not engaged
principally, or as one of its important activities, in the business of extending credit for the purpose of purchasing or carrying margin stock (within the meaning of Regulations U or X of the Board of Governors of the Federal Reserve System of the
United States of America), and no part of the proceeds of any Loan will be used to purchase or carry any margin stock in violation of said Regulations U or X or to extend credit to others for the purpose of purchasing or carrying margin stock in
violation of said Regulations U or X. 
 Section 3.12 Sanctions; Anti-Corruption; Money Laundering and Counter-Terrorist Financing
Laws. 
 (a) None of the Borrower or any of its Subsidiaries, nor, to the knowledge of the Borrower, any director, officer, employee or
Affiliate of the Borrower or any of its Subsidiaries is the subject of any sanctions administered or enforced by the U.S. Department of the Treasury’s Office of Foreign Assets Control or the U.S. State Department, the United Nations Security
Council, the European Union, Her Majesty’s Treasury, or other relevant sanctions authority (collectively, “Sanctions”); none of the Borrower or any of its Subsidiaries is located, organized or resident in a country or territory
that is, or whose government is, the subject of Sanctions. 

  
 45 

 (b) No any part of the proceeds of the Loans will be used, directly or, to the knowledge of the
Borrower, indirectly, (i) to fund or finance any activities or business of or with any Person or vessel, or in any country or territory, that, at the time of such funding or financing, is, or whose government is, the subject of Sanctions if
such activities or business would be prohibited for a U.S. Person pursuant to Sanctions, or (ii) in any other manner that would result in a violation of Sanctions by the Borrower or any Subsidiary or any other party to this Agreement. 

(c) The Borrower and its Subsidiaries are in compliance with all applicable anti-corruption laws, including the Foreign Corrupt Practices Act
of 1977, as amended, and the rules and regulations thereunder (the “FCPA”), except for such non-compliance that could not, based upon the facts and circumstances existing at the time, reasonably be expected to (x) result in a
Material Adverse Effect or (y) result in material liability to any Lender or the Administrative Agent. Williams has instituted and maintains policies and procedures reasonably designed to promote compliance by the Borrower with the FCPA and all
other applicable anti-corruption laws, and the Borrower adheres to such policies and procedures. No part of the proceeds of the Loans will be used, directly or, to the knowledge of the Borrower, indirectly, in violation of the FCPA or any other
applicable anti-corruption law, including for any payments to any governmental official or employee, political party, official of a political party, candidate for political office, or anyone else acting in an official capacity, in order to obtain,
retain or direct business or obtain any improper advantage, in violation of the FCPA or any other applicable anticorruption law. 
 (d) To
the extent applicable, the Borrower and its Subsidiaries are in compliance with the Bank Secrecy Act, as amended by Title III of the USA PATRIOT Act, and all other applicable anti-money laundering and counter-terrorist financing laws and
regulations, except for such non-compliance that could not, based on the facts and circumstances existing at the time, reasonably be expected to (x) result in a Material Adverse Effect or (y) result in material liability to any Lender or
the Administrative Agent. 
 ARTICLE IV 

CONDITIONS 

Section 4.01 Effective Date. The obligations of the Lenders to make Loans hereunder shall not become effective until the Effective
Date which is scheduled to occur when each of the following conditions is satisfied: 
 (a) The Administrative Agent (or its counsel) shall
have received from each party hereto either (i) a counterpart of this Agreement signed on behalf of such party or (ii) written evidence satisfactory to the Administrative Agent (which may include fax or email pdf transmission of a signed
signature page of this Agreement) that such party has signed a counterpart of this Agreement. 
 (b) The Administrative Agent shall have
received written opinions (addressed to the Administrative Agent and the Lenders and dated the Effective Date) of Craig L. Rainey, Esq., General Counsel of the Borrower, and Gibson, Dunn & Crutcher LLP, counsel for the Borrower, in form and
substance reasonably satisfactory to the Administrative Agent and its counsel. 
 (c) The Administrative Agent shall have received such
documents and certificates as the Administrative Agent or its counsel may reasonably request relating to (i) the organization and 

  
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existence of the Borrower, and (ii) the authorization of the Transactions and any other legal matters relating to the Borrower, this Agreement or the Transactions, all in form and substance
reasonably satisfactory to the Administrative Agent and its counsel. 
 (d) The Administrative Agent shall have received each promissory
note requested by a Lender pursuant to Section 2.10(e), each duly completed and executed by the Borrower. 
 (e) The
Administrative Agent shall have received a certificate, dated the Effective Date and signed by the President, an Executive Vice President or a Financial Officer or a Responsible Officer of the Borrower, confirming compliance with the conditions set
forth in paragraphs (h) and (i) of this Section 4.01. 
 (f) The Administrative Agent shall have received (i) all
fees and other amounts due and payable pursuant to the Fee Letter on or prior to the Effective Date and (ii) to the extent invoiced prior to closing, reimbursement or payment of all out-of-pocket expenses required to be reimbursed or paid by
the Borrower hereunder (or shall have received satisfactory evidence that all such fees and amounts are being paid substantially simultaneously). 

(g) As of the Effective Date only, since December 31, 2013, no event resulting in a Material Adverse Effect has occurred and is
continuing. 
 (h) No Default or Event of Default has occurred and is continuing. 

(i) The representations and warranties of the Borrower set forth in this Agreement shall be true and correct in all material respects (other
than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as written, including the materiality qualifier) on and as of the
Closing Date (other than those representations and warranties that expressly relate to a specific earlier date, which shall be true and correct in all material respects as of such earlier date (other than those representations and warranties that
are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as of such earlier date as written, including the materiality qualifier)). 

(j) The Effective Date (as defined in the Existing Credit Agreement) under the Existing Credit Agreement has occurred. 

The date on which all of the foregoing conditions have been satisfied (or waived by the Administrative Agent) shall be the “Effective Date”.
The Administrative Agent shall notify the Borrower and the Lenders of the Effective Date, and such notice shall be conclusive and binding. 

Section 4.02 Each Credit Event. The obligation of each Lender to make a Loan on the occasion of any Borrowing (exclusive of
continuations and conversions of a Borrowing), is subject to the satisfaction of the following conditions: 
 (a) The representations and
warranties set forth in this Agreement shall be true and correct in all material respects (other than those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true
and correct in all respects as written, including the materiality qualifier) on and as of the date of such Borrowing 

  
 47 

 
(other than those representations and warranties that expressly relate to a specific earlier date, which shall be true and correct in all material respects as of such earlier date (other than
those representations and warranties that are subject to a materiality qualifier, in which case such representations and warranties shall be true and correct in all respects as of such earlier date as written, including the materiality qualifier)).

 (b) At the time of and immediately after giving effect to such Borrowing, as applicable, no Default shall have occurred and be
continuing. 
 (c) After giving effect to any simultaneous borrowing under the Existing Credit Agreement, the amount of any unused
Commitments (as defined in the Existing Credit Agreement) under the Existing Credit Agreement (without giving effect to any termination or reduction thereof) shall be zero. 

(d) The Borrower shall have paid to the Administrative Agent on account of the Lenders, the Funding Fee referred to in the Fee Letter;
provided, however, such condition may be satisfied by netting such fee from the proceeds of the Borrowing advanced to the Borrower. 
 Each Borrowing shall
be deemed to constitute a representation and warranty by the Borrower on the date of the Borrowing as to the matters specified in paragraphs (a) and (b) of this Section. 

Section 4.03 [Reserved]. 

ARTICLE V 
 AFFIRMATIVE
COVENANTS 
 From and after the Effective Date and until the Aggregate Commitments have expired or been terminated and the principal of
and interest on each Loan and all fees payable hereunder shall have been paid in full, the Borrower, solely with respect to itself, and to the extent set forth below, its Subsidiaries, covenants and agrees with the Lenders that: 

Section 5.01 Financial Statements and Other Information. The Borrower will furnish, or cause to be furnished, to the
Administrative Agent: 
 (a) (x) as soon as available, but in any event within 105 days after the end of each fiscal year of the Borrower,
the audited consolidated balance sheet of the Borrower and its consolidated subsidiaries as for such fiscal year and the related consolidated statements of income, equity and cash flows of the Borrower and its consolidated subsidiaries for such
fiscal year, all in reasonable detail, audited and accompanied by a report and opinion of an independent certified public accountant of nationally recognized standing selected by the Borrower, which report and opinion shall be prepared in accordance
with GAAP, and (y) as soon as available, but in any event within 105 days after the end of Pre-Merger WPZ’s fiscal year ended December 31, 2014, the audited supplemental consolidated balance sheet of WPZ and its consolidated
subsidiaries for such fiscal year and the related consolidated statements of income, equity and cash flows of the Borrower and its consolidated subsidiaries for such fiscal year (which shall include a continuation of Pre-Merger WPZ’s historical
financial statements, combined with those of WPZ for the periods under common control (periods subsequent to July 1, 2014), reflected at Williams’ historical basis in both partnerships), all in reasonable detail, audited and accompanied by
a report and opinion of an independent certified public accountant of nationally recognized standing selected by the Borrower, which report and opinion shall be prepared in accordance with GAAP; 

  
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 (b) as soon as available, but in any event within 60 days after the end of each of the first
three fiscal quarters of each fiscal year of the Borrower, the unaudited consolidated balance sheet of the Borrower and its consolidated subsidiaries as at the end of such quarter and the related consolidated statements of income, equity and cash
flows of the Borrower and its consolidated subsidiaries for such quarter, all in reasonable detail and certified by a Financial Officer of the Borrower as fairly presenting in all material respects the financial condition, results of operations and
cash flows of the Borrower and its subsidiaries in accordance with GAAP, subject to normal changes resulting from year-end adjustments; 

(c) within 60 days after the end of each of the first three fiscal quarters of each fiscal year of the Borrower and within 105 days after the
end of each fiscal year of the Borrower, a certificate of a Financial Officer of the Borrower substantially in the form of Exhibit D (i) certifying as to whether a Default has occurred that is then continuing and, if a Default has
occurred that is then continuing, specifying the details thereof and any action taken or proposed to be taken with respect thereto, and (ii) setting forth in reasonable detail calculations demonstrating compliance with Section 6.07;

 (d) promptly upon their becoming available, one copy of (i) each financial statement, report, notice or proxy statement sent by the
Borrower to public securities holders generally, and (ii) each regular or periodic report, each registration statement (without exhibits except as expressly requested by such Lender), and each prospectus and all amendments thereto filed by WPZ
or any of its Subsidiaries with the Securities and Exchange Commission, or any Governmental Authority succeeding to any or all of the functions of said Commission, or with any national securities exchange; and 

(e) any other information (other than projections) which the Administrative Agent, at the request of any Lender, may from time to time
reasonably request. 
 Any document readily available on-line through the “Electronic Data Gathering, Analysis and Retrieval”
system (or any successor system thereof) maintained by the Securities and Exchange Commission (or any succeeding Governmental Authority), shall be deemed to have been furnished to the Administrative Agent for purposes of this
Section 5.01. Documents required to be delivered pursuant to this Section 5.01 may be delivered electronically and if so delivered, shall be deemed to have been delivered on the date (i) on which the Borrower posts such
documents, or provides a link thereto on the Borrower’s website on the Internet at www.williamslp.com or (ii) on which such documents are (or are deemed to be) delivered to the Administrative Agent. The Administrative Agent shall
post such documents on the Borrower’s behalf on an Internet or intranet website, if any, to which each Lender and the Administrative Agent have access (whether a commercial, third-party website or whether sponsored by the Administrative Agent).
The Administrative Agent shall have no obligation to request the delivery or to maintain copies of the documents referred to above, and in any event shall have no responsibility to monitor compliance by the Borrower with any such request for
delivery. 
 Section 5.02 Notices of Material Events. The Borrower will furnish to the Administrative Agent and each Lender
prompt written notice of the following: 
 (a) the occurrence of any Event of Default; 

  
 49 

 (b) as soon as possible and in any event within 30 Business Days after the Borrower or any of its
Subsidiaries or ERISA Affiliate of the Borrower knows or has reason to know that any ERISA Event with respect to any Plan of the Borrower has occurred or is reasonably expected to occur that could reasonably be expected to have a Material Adverse
Effect in respect of the Borrower; 
 (c) promptly and in any event within 25 Business Days after receipt thereof by the Borrower or any
ERISA Affiliate of the Borrower, copies of each notice received by the Borrower or any ERISA Affiliate of the Borrower from the PBGC stating its intention to terminate any Plan or to have a trustee appointed to administer any Plan; 

(d) promptly and in any event within 25 Business Days after receipt thereof by the Borrower or any ERISA Affiliate of the Borrower from the
sponsor of a Multiemployer Plan, a copy of each notice received by the Borrower or any ERISA Affiliate of the Borrower concerning (i) the imposition of a Withdrawal Liability by a Multiemployer Plan, (ii) the determination that a
Multiemployer Plan is, or is expected to be, in reorganization within the meaning of Title IV of ERISA, (iii) the termination of a Multiemployer Plan within the meaning of Title IV of ERISA, or (iv) the amount of liability incurred, or
expected to be incurred, by the Borrower or any ERISA Affiliate of the Borrower in connection with any event described in clause (i), (ii) or (iii) above that, in the aggregate, would reasonably be expected to have a Material Adverse
Effect in respect of the Borrower; and 
 (e) the occurrence of (i) any “Event of Default” (as defined in the indenture with
respect thereto) with respect to the Senior Notes or (ii) any “Event of Default” (as defined in the Existing Credit Agreement with respect thereto) with respect to the Existing Credit Agreement; and 

(f) any change in any rating established or deemed to have been established by Moody’s or S&P for the Index Debt of the Borrower.

 Each notice delivered under clauses (a) through (e) of this Section shall be accompanied by a statement of a Responsible Officer setting forth
the details of the event or development requiring such notice and any action taken or proposed to be taken with respect thereto. 

Section 5.03 Existence; Conduct of Business. The Borrower will, and will cause each of its Material Subsidiaries to, do or cause
to be done all things necessary to preserve, renew and keep in full force and effect its legal existence and the rights, licenses, permits, privileges and franchises material and necessary or desirable to the conduct of its business, except where
failure to do so could not be reasonably expected to have a Material Adverse Effect except (i) in the case of any Material Subsidiary of the Borrower, where the failure of such Material Subsidiary to so maintain its existence could not
reasonably be expected to have a Material Adverse Effect, (ii) where the failure to preserve and maintain such rights and franchises (other than existence) or to so qualify and remain qualified could not reasonably be expected to have a
Material Adverse Effect, and (iii) the foregoing shall not prohibit any merger, consolidation, liquidation or dissolution not prohibited under Section 6.02. 

  
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 Section 5.04 Payment of Obligations. The Borrower will, and will cause each of its
Material Subsidiaries to, pay, before the same shall become delinquent or in default, its Indebtedness and Tax liabilities but excluding Indebtedness that is not Material Indebtedness, except where (a)(i) the validity or amount thereof is being
contested by the Borrower or such Subsidiary in good faith by appropriate proceedings, and (ii) the Borrower or such Subsidiary has set aside on its books adequate reserves with respect thereto in accordance with GAAP, or (b) the failure
to make payment would not reasonably be expected to have a Material Adverse Effect. 
 Section 5.05 Maintenance of Properties;
Insurance. The Borrower will, and will cause each of its Material Subsidiaries to, (a) keep and maintain all property, taken as a whole, material to the conduct of their business in good working order and condition, ordinary wear and tear
excepted, in the reasonable judgment of the Borrower or Material Subsidiary, and (b) maintain, with financially sound and reputable insurance companies, insurance in such amounts and against such risks as are customarily maintained by companies
engaged in the same or similar businesses operating in the same or similar locations; provided that (i) the Borrower or Material Subsidiary may self-insure to the extent and in the manner normal for companies of like size, type and
financial condition and (ii) any insurance required by this Section 5.05(b) may be maintained by Williams on behalf of the Borrower or Material Subsidiary. 

Section 5.06 Books and Records; Inspection Rights. The Borrower will, and will cause each of its Material Subsidiaries to, keep in
accordance with GAAP books of record and account. The Borrower will, and will cause each of its Material Subsidiaries to, permit any representatives designated by the Administrative Agent or the Required Lenders, upon reasonable prior notice during
normal business hours and, if the Borrower shall so request, in the presence of a Responsible Officer or an appointee of a Responsible Officer, at the Lenders’ expense so long as no Event of Default exists and at the Borrower’s expense
during the continuance of an Event of Default, to visit and inspect its properties, to examine and make extracts from its books and records (subject to compliance with confidentiality agreements and applicable copyright law), and to discuss its
affairs, finances and condition with its officers, all at such reasonable times and as often as reasonably requested but no more frequently than once a year so long as no Event of Default exists. 

Section 5.07 Compliance with Laws. The Borrower will, and will cause each of its Material Subsidiaries to, comply with all laws,
rules, regulations and orders of any Governmental Authority applicable to it or its property, including, without limitation, Environmental Laws, except where the failure to do so, individually or in the aggregate, would not reasonably be expected to
result in a Material Adverse Effect. 
 Section 5.08 Use of Proceeds. The proceeds of the Loans will be used for working
capital, acquisitions, capital expenditures and other general partnership purposes. No part of the proceeds of any Loan will be used, whether directly or indirectly, for any purpose that entails a violation of any of the Regulations of the Board of
Governors of the Federal Reserve System of the United States of America, including Regulations U and X. 
 Section 5.09
Potential Subsidiary Guarantors. 
 (a) If, after the date of this Agreement, any Subsidiary of WPZ that is not already a Guarantor
guarantees any Material Indebtedness of WPZ, then that Subsidiary shall become a 

  
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Guarantor of the obligations of WPZ hereunder by executing a Guaranty and delivering it to the Administrative Agent within twenty Business Days of the date on which it guaranteed such Material
Indebtedness, together with such other additional closing documents, certificates and legal opinions as shall reasonably be requested by the Administrative Agent. 

(b) The Guaranty of a Guarantor shall be released (i) in connection with any sale or other disposition of all or substantially all of the
properties or assets of such Guarantor (including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) a Guarantor, (ii) in connection with any sale or other disposition of all of
the Capital Stock of such Guarantor to a Person that is not (either before or after giving effect to such transaction) a Guarantor, (iii) upon termination of this Agreement or (iv) at such time as such Guarantor ceases to guaranty such
Material Indebtedness. 
 Section 5.10 [Reserved]. 

ARTICLE VI 
 NEGATIVE
COVENANTS 
 From and after the Effective Date and until the Aggregate Commitments have expired or terminated and the principal of and
interest on each Loan and all fees payable hereunder have been paid in full, the Borrower, solely with respect to itself, and to the extent set forth below, its Subsidiaries, covenants and agrees with the Lenders that: 

Section 6.01 Liens. The Borrower shall not, and shall not permit any of its Material Subsidiaries to, create, assume or incur any
Lien on any of its assets or property or upon any Equity Interests of any such Material Subsidiary which Equity Interests are now owned or hereafter acquired by the Borrower or such Subsidiary to secure any Indebtedness of the Borrower or any other
Person (other than the Indebtedness under this Agreement) other than Permitted Liens, without providing that the Loans of the Borrower shall be equally and ratably secured with such Indebtedness until such time as such Indebtedness is no longer
secured by a Lien. Notwithstanding the foregoing, the Borrower may, and may permit any of its Material Subsidiaries to, create, assume or incur any Indebtedness secured by a Lien, other than a Permitted Lien, without securing the Loans of the
Borrower, provided that the aggregate principal amount of all Indebtedness then outstanding secured by Liens (other than Permitted Liens) does not exceed 15% of Consolidated Net Tangible Assets. 

Section 6.02 Fundamental Changes. The Borrower will not merge into or consolidate with any other Person, or permit any other
Person to merge into or consolidate with it, or sell, transfer, lease or otherwise dispose of, directly or indirectly, (in one transaction or in a series of transactions) all or substantially all of its assets (whether now owned or hereafter
acquired), or liquidate or dissolve, except that, if at the time thereof and immediately after giving effect thereto no Default shall have occurred and be continuing, (a) any Person may merge into the Borrower in a transaction in which the
Borrower is the surviving Person, (b) [reserved] and (c) WPZ may, in one or more substantially concurrent related transactions, merge, combine or consolidate with or into another Person if the survivor of such transactions is a master
limited partnership (an “MLP Combination”) in which WPZ is not the surviving Person if (i) (x) the Index Debt of the survivor of such MLP Combination is rated by each Rating Agency that had in effect a rating for the Index
Debt of WPZ at 

  
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the time of the initial public announcement of such MLP Combination, and (y) each such rating of the Index Debt of the survivor of such MLP Combination established by Moody’s or S&P
upon giving effect to such MLP Combination shall be not lower than the rating by Moody’s or S&P, respectively, applicable to the Index Debt of WPZ immediately before the initial public announcement of such merger or consolidation and
(ii) immediately after giving effect to such MLP Combination and each other transaction related thereto, Williams shall be the Beneficial Owner, directly or indirectly, of 100% of the Voting Stock of the General Partner. 

Section 6.03 Restricted Payments. The Borrower will not, and will not permit any of its Subsidiaries to, declare or make, or agree
to pay or make, directly or indirectly, any Restricted Payment, except as long as no Event of Default has occurred and is continuing or would result therefrom, (a) WPZ may make Restricted Payments of Available Cash (as defined in the
Partnership Agreement) with respect to any Quarter (as defined in the Partnership Agreement), (b) each of NWP and TGPL and their respective Subsidiaries may make Restricted Payments to WPZ and its Subsidiaries, (c) WPZ and its Subsidiaries
may make payments or other distributions to officers, directors or employees with respect to the exercise by any such Persons of options, warrants or other rights to acquire Equity Interests in WPZ or such Subsidiary issued pursuant to an
employment, equity award, equity option or equity appreciation agreement or plans entered into by WPZ or such Subsidiary in the ordinary course of business, (d) WPZ may reimburse the General Partner for expenses pursuant to the Partnership
Agreement, (e) TGPL and NWP and their Subsidiaries may distribute cash to WPZ in connection with their participation in WPZ’s cash management program and (f) any Person may be permitted to make any Restricted Payment required to
effectuate a MLP Combination; provided, that even if an Event of Default shall have occurred and is continuing, no Subsidiary of the Borrower shall be prohibited from upstreaming dividends or other payments to the Borrower or any Subsidiary
of the Borrower or making, in the case of any Subsidiary that is not wholly-owned (directly or indirectly) by the Borrower, dividends or payments, as the case may be, to the other owners of Equity Interests in such Subsidiary; and provided,
further, that, any dividends or payments by any such Subsidiary that is not wholly-owned (directly or indirectly) by the Borrower to the Borrower shall be not less than an amount equal to (x) WPZ’s direct or indirect percentage ownership
of Equity Interests in such Subsidiary times (y) the amount of all such dividends and payments made to all owners of Equity Interests in such Subsidiary. 

Section 6.04 Restrictive Agreements. The Borrower will not, and will not permit any of its Material Subsidiaries to, directly or
indirectly, enter into or permit to exist any agreement or other arrangement with any Person, other than the Lenders pursuant hereto, which expressly prohibits or restricts or imposes any conditions upon the ability of any Material Subsidiary of the
Borrower to (a) pay dividends or make other distributions or pay any Indebtedness owed to WPZ or any Material Subsidiary of WPZ, or (b) make subordinate loans or advances to or make other investments in WPZ or any Material Subsidiary of
WPZ in each case, other than restrictions or conditions contained in, or existing by reasons of, any agreement or instrument (i) relating to any Indebtedness or volumetric production payment arrangements of any Subsidiary of WPZ,
(ii) relating to property existing at the time of the acquisition thereof, so long as the restriction or condition relates only to the property so acquired, (iii) relating to (x) any Subsidiary of WPZ at the time such Subsidiary was
merged or consolidated with or into, or acquired by, WPZ or a Subsidiary of WPZ or became a Subsidiary of WPZ and not created in contemplation thereof or (y) any Person at the time such Person merges, combines or otherwise consolidates with WPZ
in connection with a MLP Combination and not created in contemplation thereof, (iv) effecting a renewal, extension, refinancing, refund or 

  
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replacement (or successive extensions, renewals, refinancings, refunds or replacements) of Indebtedness issued under an agreement referred to in clauses (i) through (iii) above, so long
as the restrictions and conditions contained in any such renewal, extension, refinancing, refund or replacement agreement, taken as a whole, are not materially more restrictive than the restrictions and conditions contained in the original
agreement, as determined in good faith by the board of directors of the General Partner, (v) constituting customary provisions restricting subletting or assignment of any leases of WPZ or any Subsidiary of WPZ or provisions in agreements that
restrict the assignment of such agreement or any rights thereunder, (vi) related to Permitted Liens, (vii) constituting any temporary encumbrance or restriction with respect to a Subsidiary of WPZ under an agreement that has been entered
into for the disposition of all or substantially all of the outstanding Equity Interests of or assets of such Subsidiary, provided that such disposition is otherwise permitted hereunder, (viii) constituting customary restrictions on
cash, other deposits or assets imposed by customers and other persons under contracts entered into in the ordinary course of business, (ix) constituting provisions contained in agreements or instruments relating to Indebtedness that prohibit
the transfer of all or substantially all of the assets of the obligor under that agreement or instrument unless the transferee assumes the obligations of the obligor under such agreement or instrument or such assets may be transferred subject to
such prohibition, (x) constituting a requirement that a certain amount of Indebtedness be maintained between a Subsidiary of WPZ and WPZ or another Subsidiary of WPZ, (xi) constituting any restriction or condition with respect to property
under an agreement that has been entered into for the disposition of such property, provided that such disposition is otherwise permitted hereunder, (xii) constituting any restriction or condition with respect to property under a
charter, lease or other agreement that has been entered into for the employment of such property, (xiii) constituting a Hybrid Security or an indenture, document, agreement or security entered into or issued in connection with a Hybrid Security
or otherwise constituting a restriction or condition on the payment of dividends or distributions by an issuer of a Hybrid Security; (xiv) entered into in the ordinary course of business; (xv) existing under or by reason of applicable law;
(xvi) relating to a joint venture or similar arrangement, so long as the restriction or condition relates only to the property that is subject to such joint venture or similar arrangement; (xvii) existing on the Closing Date and set forth
in Schedule 6.04; (xviii) relating to financial performance covenants or (xix) arising from the Partnership Agreement or the limited liability company agreement with respect to Discovery. 

Section 6.05 Affiliate Transactions. The Borrower will not, and will not permit any of its Material Subsidiaries to, directly or
indirectly, pay any funds to or for the account of, make any investment in, lease, sell, transfer or otherwise dispose of any assets, tangible or intangible, to, or participate in, or effect, any transaction with, any officer, director, employee or
Affiliate (other than the Borrower or any of its Subsidiaries) unless as a whole such transactions between the Borrower and its Subsidiaries on the one hand and any officer, director, employee or Affiliate (other than the Borrower or any of its
Subsidiaries) on the other hand, are on terms and conditions fair and reasonable to the Borrower or such Material Subsidiary as determined by the General Partner; provided, that the foregoing provisions of this Section shall not
prohibit (a) the Borrower or any of its Subsidiaries from declaring or paying any lawful dividend or distribution otherwise permitted hereunder, (b) the Borrower or any of its Subsidiaries from providing credit support for its Subsidiaries
as it deems appropriate in the ordinary course of business, (c) WPZ or any of its Subsidiaries from engaging in a transaction or transactions that occur within a related series of transactions, which, in the aggregate, are on terms and
conditions that are fair and reasonable as determined by the General Partner, (d) the Borrower or any of its Subsidiaries from engaging in non-material 

  
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transactions with any officer, director, employee or Affiliate of the Borrower or any of its Subsidiaries that are not on an arms-length basis or are not
on terms as favorable as could have been obtained from a third party but are in the ordinary course of the Borrower’s or such Subsidiary’s business, so long as, in each case, after giving effect thereto, no Default or Event of Default
shall have occurred and be continuing, (e) WPZ or any of its Subsidiaries from engaging in a transaction with an Affiliate if such transaction has been approved by the General Partner’s Board of Directors, (f) any arrangement in place
on the Closing Date or any amendment thereto or replacement thereof or any transaction contemplated thereby so long as such amendment or replacement is not more disadvantageous in any material respect than the arrangement so amended or replaced;
(g) any transaction permitted under the Partnership Agreement; (h) any corporate sharing agreements with respect to Tax sharing and general overhead and administrative matters; (i) any direct or indirect transfer of Equity Interests
to WPZ or any of its Subsidiaries in one or a series of transactions or (j) WPZ’s and its Subsidiaries’ participation in WPZ’s cash management program. 

Section 6.06 Change in Nature of Businesses. Neither the Borrower nor any Material Subsidiary of the Borrower will materially
alter the character of their business from the midstream energy business, pipeline business and wetlands mitigation business and those lines of business conducted by WPZ and its Subsidiaries on the Closing Date (or which are directly related thereto
or generally related thereto), except that WPZ and its Subsidiaries may engage in the businesses of producing, gathering, processing, storing, transporting and distributing natural gas, natural gas liquids, refined products and crude oil and similar
businesses. 
 Section 6.07 Financial Condition Covenants. 

(a) Leverage Ratio. WPZ shall not permit the ratio of Consolidated Indebtedness of WPZ as of the last day of any fiscal quarter for
which financial statements have been delivered pursuant to Section 5.01 to Consolidated EBITDA of WPZ for the four full fiscal quarters ending on such date to exceed: 

(i) 5.50 to 1.0, in the case of any such period ended on the last day of (A) a fiscal quarter in which the Borrower or any
consolidated Subsidiary of WPZ makes any Specified Acquisition, or (B) the first or second fiscal quarter next succeeding such a fiscal quarter; or 

(ii) 5.00 to 1.00, in the case of any such period ended on the last day of any other fiscal quarter. 

For purposes of this Section 6.07(a): (A) Hybrid Securities up to an aggregate amount of 15% of Consolidated Total Capitalization shall be
excluded from Consolidated Indebtedness of WPZ, (B) Consolidated EBITDA of WPZ may include, at WPZ’s option, any Material Project EBITDA Adjustments as provided in the definition thereof and (C) once any Acquisition Adjustment Period
is in effect, the next succeeding Acquisition Adjustment Period may not commence until the termination of such Acquisition Adjustment Period then in effect. 

(b) [Reserved]. 

  
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 ARTICLE VII 

EVENTS OF DEFAULT 
 If any
of the following events (“Events of Default”) shall occur and be continuing: 
 (a) the Borrower shall fail to pay any
principal of any Loan when and as the same shall become due and payable, whether at the due date thereof or at a date fixed for prepayment thereof or otherwise; 

(b) the Borrower shall fail to pay (i) any interest on any Loan payable under this Agreement, when and as the same shall become due and
payable, and such failure shall continue unremedied for a period of five (5) days or (ii) any fee or any other amount (other than an amount referred to in clause (a) or (b)(i) of this Article) payable under this Agreement, when and as
the same shall become due and payable, and such failure shall continue unremedied for a period of ten (10) days; 
 (c) any
representation or warranty made by the Borrower herein or in any other Loan Document (or by any Responsible Officer of the Borrower) in writing under or in connection with this Agreement or any other Loan Document or any instrument executed in
connection herewith (including representations and warranties deemed made pursuant to Section 4.02) shall prove to have been incorrect in any material respect when made or deemed made and such materiality is continuing; 

(d) the Borrower shall fail to observe or perform any covenant, condition or agreement contained in Article VI; 

(e) the Borrower shall fail to observe or perform any covenant, condition or agreement contained in this Agreement (other than those specified
in clause (a), (b) or (d) of this Article), and such failure shall continue unremedied for a period of 30 days after the earlier of (i) written notice thereof from the Administrative Agent to the Borrower (which notice will be
given at the request of the Required Lenders) or (ii) a Responsible Officer of the Borrower shall have knowledge of such failure; 

(f) the Borrower or any Material Subsidiary of the Borrower shall (i) fail to pay (A) any principal of or premium or interest on any
Material Indebtedness of the Borrower or such Material Subsidiary (as the case may be), or (B) aggregate net obligations under one or more Hedging Agreements (excluding amounts the validity of which are being contested in good faith by
appropriate proceedings, if necessary, and for which adequate reserves with respect thereto are maintained on the books of the Borrower or such Material Subsidiary (as the case may be)) in excess of $150,000,000, in each case when the same becomes
due and payable (whether by scheduled maturity, required prepayment, acceleration, demand or otherwise), and such failure shall continue after the applicable grace period, if any, specified in the agreement or instrument relating to such Material
Indebtedness or such Hedging Agreements; or (ii) default in the observance or performance of any covenant or obligation contained in any agreement of such Material Indebtedness that is a default (in each case, other than a failure to pay
specified in clause (i) of this subsection (f)) and such default shall continue after the applicable grace period, if any, specified in such agreement or instrument, if the effect thereof is to accelerate the maturity of such Material
Indebtedness or require 

  
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such Material Indebtedness to be prepaid prior to the stated maturity thereof; for the avoidance of doubt the parties acknowledge and agree that any payment required to be made under a guaranty
of payment or collection described in clause (g) of the definition of Indebtedness shall be due and payable at the time such payment is due and payable under the terms of such guaranty (taking into account any applicable grace period) and such
payment shall be deemed not to have been accelerated or required to be prepaid prior to its stated maturity as a result of the obligation guaranteed having become due; provided, that this paragraph (f) shall not apply to secured
Indebtedness that becomes due as a result of voluntary sale or transfer of the property or assets securing such Indebtedness; 
 (g) an
involuntary proceeding shall be commenced or an involuntary petition shall be filed seeking (i) liquidation, reorganization or other relief in respect of the Borrower or any Material Subsidiary of the Borrower or its debts, or of a substantial
part of its assets, under any federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for
the Borrower or any Material Subsidiary of the Borrower or for a substantial part of its assets, and, in any such case, such proceeding or petition shall continue undismissed for 60 days or an order or decree approving or ordering any of the
foregoing shall be entered; 
 (h) the Borrower or any Material Subsidiary of the Borrower shall (i) voluntarily commence any
proceeding or file any petition seeking liquidation, reorganization or other relief under any federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect, (ii) consent to the institution of, or fail
to contest in a timely and appropriate manner, any proceeding or petition described in clause (h) of this Article, (iii) apply for or consent to the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar
official for the Borrower or any Material Subsidiary of the Borrower or for a substantial part of its assets (iv) make a general assignment for the benefit of creditors or (v) take any action for the purpose of effecting any of the
foregoing; 
 (i) the Borrower or any Material Subsidiary of the Borrower shall admit in writing its inability to pay its debts generally;

 (j) one or more judgments for the payment of money in an aggregate uninsured amount equal to or greater than $150,000,000 shall be
rendered against the Borrower or any Material Subsidiary of the Borrower or any combination thereof and the same shall remain undischarged for a period of 30 consecutive days during which execution shall not be effectively stayed, or any action
shall be legally taken by a judgment creditor to attach or levy upon any assets of the Borrower or any such Material Subsidiary of the Borrower to enforce any such judgment; 

(k) an ERISA Event shall have occurred and, thirty (30) days after notice thereof shall have been given to the Borrower by the
Administrative Agent, such ERISA Event shall still exist, and such ERISA Event, when taken together with all other ERISA Events that have occurred, would reasonably be expected to result in a Material Adverse Effect; 

(i) the Borrower or any Material Subsidiary or ERISA Affiliate of the Borrower shall have been notified by the sponsor of a
Multiemployer Plan that it has incurred Withdrawal Liability to such Multiemployer Plan in an amount which, when aggregated with all other amounts required to be paid to Multiemployer Plans in connection with Withdrawal Liabilities (determined as of
the date of such notification), would reasonably be expected to result in a Material Adverse Effect; 

  
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 (l) the Borrower or any Material Subsidiary or ERISA Affiliate of the Borrower shall have been
notified by the sponsor of a Multiemployer Plan that such Multiemployer Plan is in reorganization or is being terminated, within the meaning of Title IV of ERISA, if as a result of such reorganization or termination the aggregate annual
contributions of the Borrower and its ERISA Affiliates to all Multiemployer Plans which are then in reorganization or being terminated have been or will be increased over the amounts contributed to such Multiemployer Plans for the respective plan
years which include the Closing Date by an amount that would reasonably be expected to result in a Material Adverse Effect; 
 (m) the
General Partner takes, suffers or permits to exist any of the events or conditions referred to in clauses (g), (h) or (i) of this Article; 

(n) a Change in Control shall occur; or 

(o) if any Guaranty of a Material Subsidiary is required to be in effect pursuant to Section 5.09(a) and prior to the release of
such Guaranty pursuant to Section 5.09(b), (i) such Guaranty for any reason is not a legal, valid, binding and enforceable obligation of such Guarantor party thereto for more than five (5) days or (ii) such Guarantor shall
so state in writing that such Guaranty for any reason is not a legal, valid, binding and enforceable obligation of such Guarantor; 
 then, and in every
such event (other than an event with respect to the Borrower described in clause (g) or (h) of this Article), and at any time thereafter during the continuance of such event, the Administrative Agent at the request of the Required Lenders
shall, by notice to the Borrower, take any of the following actions, at the same or different times: (i) terminate the Aggregate Commitments, and thereupon the Aggregate Commitments shall terminate immediately, (ii) declare the Loans
owed by the Borrower as to which an Event of Default has occurred and is continuing to be due and payable in whole (or in part, in which case any principal not so declared to be due and payable may thereafter be declared to be due and payable), and
thereupon the principal of the Loans so declared to be due and payable, together with accrued interest thereon and all fees and other obligations of the Borrower accrued hereunder, shall become due and payable immediately, without presentment,
demand, protest or other notice of any kind, all of which are hereby waived by the Borrower; and in case of any event with respect to the Borrower described in clause (g) or (h) of this Article, the obligations of each Lender to make Loans
to the Borrower shall be automatically terminated and the principal of the Loans of the Borrower then outstanding, together with accrued interest thereon and all fees and other obligations owed by the applicable Borrower as to which such Event of
Default has occurred and is continuing, shall automatically become due and payable, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrower, and (iii) exercise on behalf of itself and the
Lenders all rights and remedies available to it and the Lenders under the Loan Documents. 

  
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 ARTICLE VIII 

THE ADMINISTRATIVE AGENT 

Section 8.01 Appointment and Authority. Each Lender hereby irrevocably appoints Barclays Bank PLC to act on its behalf as the
Administrative Agent hereunder and under the other Loan Documents and authorizes the Administrative Agent to take such actions on its behalf and to exercise such powers as are delegated to the Administrative Agent by the terms hereof or thereof,
together with such actions and powers as are reasonably incidental thereto. The provisions of this Article are solely for the benefit of the Administrative Agent and the Lenders, and no Borrower or Guarantor shall have rights as a third party
beneficiary of any of such provisions. 
 Section 8.02 Administrative Agent Individually. 

(a) The Person serving as the Administrative Agent hereunder shall have the same rights and powers in its capacity as a Lender as any other
Lender and may exercise the same as though it were not the Administrative Agent and the term “Lender” or “Lenders” shall, unless otherwise expressly indicated or unless the context otherwise requires, include the Person serving
as the Administrative Agent hereunder in its individual capacity. Such Person and its Affiliates may accept deposits from, lend money to, act as the financial advisor or in any other advisory capacity for and generally engage in any kind of business
with the Borrower or any Subsidiary or other Affiliate thereof as if such Person were not the Administrative Agent hereunder and without any duty to account therefor to the Lenders. 

(b) Each Lender understands that the Person serving as Administrative Agent, acting in its individual capacity, and its Affiliates
(collectively, the “Agent’s Group”) are engaged in a wide range of financial services and businesses (including investment management, financing, securities trading, corporate and investment banking and research) (such services
and businesses are collectively referred to in this Article VIII as “Activities”) and may engage in the Activities with or on behalf of one or more of the Borrower or their respective Affiliates. Furthermore, the Agent’s
Group may, in undertaking the Activities, engage in trading in financial products or undertake other investment businesses for its own account or on behalf of others (including the Borrower and its Affiliates and including holding, for its own
account or on behalf of others, equity, debt and similar positions in the Borrower or its Affiliates), including trading in or holding long, short or derivative positions in securities, loans or other financial products of one or more of the
Borrower or its Affiliates. Each Lender understands and agrees that in engaging in the Activities, the Agent’s Group may receive or otherwise obtain information concerning the Borrower or its Affiliates (including information concerning the
ability of the Borrower to perform its obligations hereunder and under the other Loan Documents) which information may not be available to any of the Lenders that are not members of the Agent’s Group. None of the Administrative Agent nor any
member of the Agent’s Group shall have any duty to disclose to any Lender or use on behalf of the Lenders, and shall not be liable for the failure to so disclose or use, any information whatsoever about or derived from the Activities or
otherwise (including any information concerning the business, prospects, operations, property, financial and other condition or creditworthiness of the Borrower or any Affiliate thereof) or to account for any revenue or profits obtained in
connection with the Activities, except that the Administrative Agent shall deliver or otherwise make available to each Lender such documents as are expressly required by any Loan Document to be transmitted by the Administrative Agent to the Lenders.

  
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 (c) Each Lender further understands that there may be situations where members of the
Agent’s Group or their respective customers (including the Borrower and its Affiliates) either now have or may in the future have interests or take actions that may conflict with the interests of any one or more of the Lenders (including the
interests of the Lenders hereunder and under the other Loan Documents). Each Lender agrees that no member of the Agent’s Group is or shall be required to restrict its activities as a result of the Person serving as Administrative Agent being a
member of the Agent’s Group, and that each member of the Agent’s Group may undertake any Activities without further consultation with or notification to any Lender. None of (i) this Agreement nor any other Loan Document, (ii) the
receipt by the Agent’s Group of information (including Information) concerning the Borrower or its Affiliates (including information concerning the ability of the Borrower to perform their respective obligations hereunder and under the other
Loan Documents) nor (iii) any other matter shall give rise to any fiduciary, equitable or contractual duties (including without limitation any duty of trust or confidence) owing by the Administrative Agent or any member of the Agent’s
Group to any Lender including any such duty that would prevent or restrict the Agent’s Group from acting on behalf of customers (including the Borrower or its Affiliates) or for its own account. 

Section 8.03 Duties of Administrative Agent; Exculpatory Provisions. 

(a) The Administrative Agent’s duties hereunder and under the other Loan Documents are solely ministerial and administrative in nature
and the Administrative Agent shall not have any duties or obligations except those expressly set forth herein and in the other Loan Documents. Without limiting the generality of the foregoing, the Administrative Agent shall not have any duty to take
any discretionary action or exercise any discretionary powers, but shall be required to act or refrain from acting (and shall be fully protected in so acting or refraining from acting) upon the written direction of the Required Lenders (or such
other number or percentage of the Lenders as shall be expressly provided for herein or in the other Loan Documents), provided that the Administrative Agent shall not be required to take any action that, in its opinion or the opinion of its
counsel, may expose the Administrative Agent or any of its Affiliates to liability or that is contrary to any Loan Document or applicable law, including, for the avoidance of doubt, any action that may be in violation of the automatic stay under the
Bankruptcy Code or other debtor relief law or that may effect a forfeiture, modification or termination of property of a Defaulting Lender in violation of the Bankruptcy Code or other debtor relief law. 

(b) The Administrative Agent shall not be liable for any action taken or not taken by it (i) with the consent or at the request of the
Required Lenders (or such other number or percentage of the Lenders as shall be necessary, or as the Administrative Agent shall believe in good faith shall be necessary, under the circumstances as provided in Section 9.03 or Article
VII) or (ii) in the absence of its own gross negligence or willful misconduct. The Administrative Agent shall be deemed not to have knowledge of any Default or the event or events that give or may give rise to any Default unless and until
the Borrower or any Lender shall have given notice to the Administrative Agent describing such Default and such event or events. 
 (c)
Neither the Administrative Agent nor any member of the Agent’s Group shall be responsible for or have any duty to ascertain or inquire into (i) any statement, warranty, representation or other information made or supplied in or in
connection with this Agreement, any other Loan Document, (ii) the contents of any certificate, report or other document delivered 

  
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hereunder or thereunder or in connection herewith or therewith or the adequacy, accuracy and/or completeness of the information contained therein, (iii) the performance or observance of any
of the covenants, agreements or other terms or conditions set forth herein or therein or the occurrence of any Default, (iv) the validity, enforceability, effectiveness or genuineness of this Agreement, any other Loan Document or any other
agreement, instrument or document or (v) the satisfaction of any condition set forth in Article IV or elsewhere herein, other than (but subject to the foregoing clause (ii)) to confirm receipt of items expressly required to be
delivered to the Administrative Agent. 
 (d) Nothing in this Agreement or any other Loan Document shall require the Administrative Agent or
any of its Related Parties to carry out any “know your customer” or other checks in relation to any person on behalf of any Lender and each Lender confirms to the Administrative Agent that it is solely responsible for any such checks it is
required to carry out and that it may not rely on any statement in relation to such checks made by the Administrative Agent or any of its Related Parties. 

Section 8.04 Reliance by Administrative Agent. The Administrative Agent shall be entitled to rely upon, and shall not incur any
liability for relying upon, any notice, request, certificate, consent, statement, instrument, document or other writing (including any electronic message, Internet or intranet website posting or other distribution) believed by it to be genuine and
to have been signed, sent or otherwise authenticated by the proper Person. The Administrative Agent also may rely upon any statement made to it orally or by telephone and believed by it to have been made by the proper Person, and shall not incur any
liability for relying thereon. In determining compliance with any condition hereunder to the making of a Loan, that by its terms must be fulfilled to the satisfaction of a Lender, the Administrative Agent may presume that such condition is
satisfactory to such Lender unless an officer of the Administrative Agent responsible for the transactions contemplated hereby shall have received notice to the contrary from such Lender prior to the making of such Loan, and in the case of a
Borrowing, such Lender shall not have made available to the Administrative Agent such Lender’s ratable portion of such Borrowing. The Administrative Agent may consult with legal counsel (who may be counsel for the Borrower), independent
accountants and other experts selected by it, and shall not be liable for any action taken or not taken by it in accordance with the advice of any such counsel, accountants or experts. 

Section 8.05 Delegation of Duties. The Administrative Agent may perform any and all of its duties and exercise its rights and
powers hereunder or under any other Loan Document by or through any one or more sub agents appointed by the Administrative Agent. The Administrative Agent and any such sub agent may perform any and all of its duties and exercise its rights and
powers by or through their respective Related Parties. Each such sub agent and the Related Parties of the Administrative Agent and each such sub agent shall be entitled to the benefits of all provisions of this Article VIII and
Section 9.04 (as though such sub-agents were the “Administrative Agent” under the Loan Documents) as if set forth in full herein with respect thereto. The Administrative Agent shall not be responsible for the negligence or
misconduct of any sub-agents except to the extent that a court of competent jurisdiction determines in a final and nonappealable judgment that the Administrative Agent acted with gross negligence or willful misconduct in the selection of such sub
agents. 
 Section 8.06 Resignation of Administrative Agent. The Administrative Agent may at any time give notice of its
resignation to the Lenders and the Borrower (such notice not to be effective 

  
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until 30 days have lapsed). Upon receipt of any such notice of resignation, the Required Lenders shall have the right, unless an Event of Default under subsection (a), (g) or (h) of
Article VII has occurred and is continuing, with the consent of the Borrower, to appoint a successor. If no such successor shall have been so appointed by the Required Lenders and shall have accepted such appointment within 30 days after the
retiring Administrative Agent gives notice of its resignation (such 30-day period, the “Lender Appointment Period”), then the retiring Administrative Agent may on behalf of the Lenders, appoint a successor Administrative Agent
meeting the qualifications set forth above. In addition and without any obligation on the part of the retiring Administrative Agent to appoint, on behalf of the Lenders, a successor Administrative Agent, the retiring Administrative Agent may at any
time upon or after the end of the Lender Appointment Period notify the Borrower and the Lenders that no qualifying Person has accepted appointment as successor Administrative Agent and the effective date of such retiring Administrative Agent’s
resignation which effective date shall be no earlier than three business days after the date of such notice. Upon the resignation effective date established in such notice and regardless of whether a successor Administrative Agent has been appointed
and accepted such appointment, the retiring Administrative Agent’s resignation shall nonetheless become effective and (i) the retiring Administrative Agent shall be discharged from its duties and obligations as Administrative Agent
hereunder and under the other Loan Documents and (ii) all payments, communications and determinations provided to be made by, to or through the Administrative Agent shall instead be made by or to each Lender directly, until such time as the
Required Lenders appoint a successor Administrative Agent as provided for above in this paragraph. Upon the acceptance of a successor’s appointment as Administrative Agent hereunder, such successor shall succeed to and become vested with all of
the rights, powers, privileges and duties as Administrative Agent of the retiring (or retired) Administrative Agent, and the retiring Administrative Agent shall be discharged from all of its duties and obligations as Administrative Agent hereunder
or under the other Loan Documents (if not already discharged therefrom as provided above in this paragraph). The fees payable by WPZ to a successor Administrative Agent shall be the same as those payable to its predecessor unless otherwise agreed
between WPZ and such successor. After the retiring Administrative Agent’s resignation hereunder and under the other Loan Documents, the provisions of this Article and Section 9.04 shall continue in effect for the benefit of such
retiring Administrative Agent, its sub agents and their respective Related Parties in respect of any actions taken or omitted to be taken by any of them while the retiring Administrative Agent was acting as Administrative Agent. Anything herein to
the contrary notwithstanding, if at any time the Required Lenders determine that the Person serving as Administrative Agent is (without taking into account any provision in the definition of “Defaulting Lender” requiring notice from the
Administrative Agent or any other party) a Defaulting Lender, the Required Lenders (determined after giving effect to Section 9.03) may by notice to the Borrower and such Person remove such Person as Administrative Agent and, in with the
consent of the Borrower, appoint a replacement Administrative Agent hereunder. Such removal will, to the fullest extent permitted by applicable law, be effective on the earlier of (i) the date a replacement Administrative Agent is appointed and
(ii) the date 30 days after the giving of such notice by the Required Lenders (regardless of whether a replacement Administrative Agent has been appointed). 

Section 8.07 Non-Reliance on Administrative Agent and Other Lenders. 

(a) Each Lender confirms to the Administrative Agent, each other Lender and each of their respective Related Parties that it
(i) possesses (individually or through its Related Parties) such knowledge and experience in financial and business matters that it is capable, without reliance on the 

  
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Administrative Agent, any other Lender or any of their respective Related Parties, of evaluating the merits and risks (including Tax, legal, regulatory, credit, accounting and other financial
matters) of (x) entering into this Agreement, (y) making Loans and other extensions of credit hereunder and under the other Loan Documents and (z) taking or not taking actions hereunder and thereunder, (ii) is financially able to
bear such risks and (iii) has determined that entering into this Agreement and making Loans and other extensions of credit hereunder and under the other Loan Documents is suitable and appropriate for it. 

(b) Each Lender acknowledges that (i) it is solely responsible for making its own independent appraisal and investigation of all risks
arising under or in connection with this Agreement and the other Loan Documents, (ii) it has, independently and without reliance upon the Administrative Agent, any other Lender or any of their respective Related Parties, made its own appraisal
and investigation of all risks associated with, and its own credit analysis and decision to enter into, this Agreement based on such documents and information as it has deemed appropriate and (iii) it will, independently and without reliance
upon the Administrative Agent, any other Lender or any of their respective Related Parties, continue to be solely responsible for making its own appraisal and investigation of all risks arising under or in connection with, and its own credit
analysis and decision to take or not take action under, this Agreement and the other Loan Documents based on such documents and information as it shall from time to time deem appropriate, which may include, in each case: 

(i) the financial condition, status and capitalization of the Borrower; 

(ii) the legality, validity, effectiveness, adequacy or enforceability of this Agreement and each other Loan Document and any
other agreement, arrangement or document entered into, made or executed in anticipation of, under or in connection with any Loan Document; 

(iii) determining compliance or non-compliance with any condition hereunder to the making of a Loan and the form and substance
of all evidence delivered in connection with establishing the satisfaction of each such condition; 
 (iv) the adequacy,
accuracy and/or completeness of any information delivered by the Administrative Agent, any other Lender or by any of their respective Related Parties under or in connection with this Agreement or any other Loan Document, the transactions
contemplated hereby and thereby or any other agreement, arrangement or document entered into, made or executed in anticipation of, under or in connection with any Loan Document. 

  
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 ARTICLE IX 

MISCELLANEOUS 

Section 9.01 Notices. 

(a) Except in the case of notices and other communications expressly permitted to be given by telephone, all notices, demands, requests,
consents and other communications provided for in this Agreement shall be given in writing, or by any telecommunication device capable of creating a written record (including electronic mail), and addressed to the party to be notified as follows:

 (i) if to WPZ or any other Borrower, to it at Williams Partners L.P., c/o WPZ GP LLC, One Williams Center, Tulsa, Oklahoma
74172-0172, Attention of Treasurer (fax number (918) 573-0871); 
 (ii) if to the Administrative Agent, to Barclays Bank
PLC, 745 Seventh Ave., New York, NY 10019, attention of Jake Lam (fax number: 212-526-5115, phone number: 212-526-2874, email: jake.lam@barclays.com) with a copy to Barclays Capital Services LLC, 1301 Sixth Avenue, New York, NY 10019,
attention of Christopher Aitkin (fax number: 917-522-0569, phone number: 212-320-6564, email: xrausloanops@barclays.com and Christopher.Aitkin@barclays.com); 

(iii) [reserved]; and 

(iv) if to any other Lender, to it at its address (or fax number) set forth in its Administrative Questionnaire. 

or at such other address as shall be notified in writing (x) in the case of the Borrower and the Administrative Agent, to the other
parties and (y) in the case of all other parties, to the Borrower and the Administrative Agent. 
 (b) All notices, demands, requests,
consents and other communications described in clause (a) shall be effective (i) if delivered by hand, including any overnight courier service, upon personal delivery, (ii) if delivered by mail, when deposited in the mails,
(iii) if delivered by posting to an Approved Electronic Platform, an Internet website or a similar telecommunication device requiring that a user have prior access to such Approved Electronic Platform, website or other device (to the extent
permitted by Section 9.02 to be delivered thereunder), when such notice, demand, request, consent and other communication shall have been made generally available on such Approved Electronic Platform, Internet website or similar device
to the class of Person being notified (regardless of whether any such Person must accomplish, and whether or not any such Person shall have accomplished, any action prior to obtaining access to such items, including registration, disclosure of
contact information, compliance with a standard user agreement or undertaking a duty of confidentiality) and such Person has been notified in respect of such posting that a communication has been posted to the Approved Electronic Platform and
(iv) if delivered by electronic mail or any other telecommunications device, when transmitted to an electronic mail address (or by another means of electronic delivery) as provided in clause (a); provided, however, that notices and
communications to the Administrative Agent pursuant to Article II or Article VIII shall not be effective until received by the Administrative Agent. 

(c) Notwithstanding clauses (a) and (b) (unless the Administrative Agent requests that the provisions of clause (a) and
(b) be followed) and any other provision in this Agreement or any other Loan Document providing for the delivery of any Approved Electronic Communication by any other means, the Borrower shall deliver all Approved Electronic Communications to
the Administrative Agent by properly transmitting such Approved Electronic Communications in an electronic/soft medium in a format acceptable to the Administrative Agent to xrausloanops@barclays.com with a

  
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copy to jake.lam@barclays.com or such other electronic mail address (or similar means of electronic delivery) as the Administrative Agent may notify to the Borrower. Nothing in this clause
(c) shall prejudice the right of the Administrative Agent or any Lender to deliver any Approved Electronic Communication to the Borrower in any manner authorized in this Agreement or to request that the Borrower effect delivery in such manner.

 Section 9.02 Posting of Approved Electronic Communications. 

(a) Each of the Lenders and the Borrower agree that the Administrative Agent may, but shall not be obligated to, make the Approved Electronic
Communications available to the Lenders by posting such Approved Electronic Communications on Debt Domain or a substantially similar electronic platform chosen by the Administrative Agent to be its electronic transmission system (the
“Approved Electronic Platform”). 
 (b) Although the Approved Electronic Platform and its primary web portal are secured
with generally-applicable security procedures and policies implemented or modified by the Administrative Agent from time to time, each of the Lenders and the Borrower acknowledges and agrees that the distribution of material through an electronic
medium is not necessarily secure and that there are confidentiality and other risks associated with such distribution. In consideration for the convenience and other benefits afforded by such distribution and for the other consideration provided
hereunder, the receipt and sufficiency of which are hereby acknowledged, each of the Lenders and the Borrower hereby approves distribution of the Approved Electronic Communications through the Approved Electronic Platform and understands and assumes
the risks of such distribution. 
 (c) THE APPROVED ELECTRONIC PLATFORM AND THE APPROVED ELECTRONIC COMMUNICATIONS ARE PROVIDED “AS
IS” AND “AS AVAILABLE”. NONE OF THE ADMINISTRATIVE AGENT NOR ANY OTHER MEMBER OF THE AGENT’S GROUP WARRANT THE ACCURACY, ADEQUACY OR COMPLETENESS OF THE APPROVED ELECTRONIC COMMUNICATIONS OR THE APPROVED ELECTRONIC PLATFORM AND
EACH EXPRESSLY DISCLAIMS ANY LIABILITY FOR ERRORS OR OMISSIONS IN THE APPROVED ELECTRONIC COMMUNICATIONS OR THE APPROVED ELECTRONIC PLATFORM. NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT OF THIRD PARTY RIGHTS OR FREEDOM FROM VIRUSES OR OTHER CODE DEFECTS, IS MADE BY THE AGENT PARTIES IN CONNECTION WITH THE APPROVED ELECTRONIC COMMUNICATIONS OR THE APPROVED
ELECTRONIC PLATFORM. 
 (d) Each of the Lenders and the Borrower agree that the Administrative Agent may, but (except as may be required by
applicable law) shall not be obligated to, store the Approved Electronic Communications on the Approved Electronic Platform in accordance with the Administrative Agent’s generally-applicable document retention procedures and policies. 

  
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 Section 9.03 Waivers; Amendments. 

(a) No failure or delay by the Administrative Agent or any Lender in exercising any right or power hereunder shall operate as a waiver
thereof, nor shall any single or partial exercise of any such right or power, or any abandonment or discontinuance of steps to enforce such a right or power, preclude any other or further exercise thereof or the exercise of any other right or power.
The rights and remedies of the Administrative Agent and the Lenders hereunder are cumulative and are not exclusive of any rights or remedies that they would otherwise have. No waiver of any provision of this Agreement or consent to any departure by
the Borrower therefrom shall in any event be effective unless the same shall be permitted by paragraph (b) of this Section, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given.
Without limiting the generality of the foregoing, the making of a Loan shall not be construed as a waiver of any Default, regardless of whether the Administrative Agent or any Lender may have had notice or knowledge of such Default at the time. 

(b) Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in
writing entered into by the Borrower and the Required Lenders or by the Borrower and the Administrative Agent with the consent of the Required Lenders; provided that no such agreement shall (i) increase or extend the Commitment of any
Lender without the written consent of such Lender, (ii) reduce the principal amount of any Loan or reduce the rate of interest thereon, or reduce any fees payable hereunder, without the written consent of each Lender affected thereby,
(iii) postpone the scheduled date of payment of the principal amount of any Loan, or any interest thereon, or any fees payable hereunder, or reduce the amount of, waive or excuse any such payment, or postpone the scheduled date of expiration of
any Commitment, without the written consent of each Lender affected thereby, (iv) except as contemplated in Section 2.04(e), change any provision in a manner that would alter the pro rata sharing of payments required thereby,
without the written consent of each Lender, or (v) change any of the provisions of this Section or the definition of “Required Lenders” or any other provision hereof specifying the number or percentage of Lenders required to waive,
amend or modify any rights hereunder or make any determination or grant any consent hereunder, without the written consent of each Lender; provided further that no such agreement shall amend, modify or otherwise affect the rights or duties of
the Administrative Agent hereunder without the prior written consent of the Administrative Agent. Except as provided herein, during such period as a Lender is a Defaulting Lender, to the fullest extent permitted by applicable law, such Lender will
not be entitled to vote in respect of amendments and waivers hereunder and the Commitment and the outstanding Loans of such Lender hereunder will not be taken into account in determining whether the Required Lenders or all of the Lenders, as
required, have approved any such amendment or waiver (and the definition of “Required Lenders” will automatically be deemed modified accordingly for the duration of such period); provided, that any such amendment or waiver referred
to in clauses (i) through (v) or the proviso above or that would alter the terms of this proviso shall require the consent of such Defaulting Lender to the extent such Defaulting Lender is affected thereby. 

(c) Notwithstanding the foregoing, the Administrative Agent and WPZ may amend any Loan Document to correct any obvious errors, mistakes,
omissions, defects or inconsistencies of a technical or immaterial nature, and such amendment shall become effective without any further consent of any other party to such Loan Document other than the Administrative Agent and WPZ. 

  
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 Section 9.04 Expenses; Indemnity; Damage Waiver. 

(a) (i) WPZ agrees to pay, within 30 days of receipt by WPZ of request therefor, all reasonable out-of-pocket costs and expenses of the
Administrative Agent in connection with the syndication, preparation, execution, delivery, administration, modification and amendment of this Agreement, the Notes, or any other Loan Document and the other documents to be delivered under this
Agreement, including the reasonable fees and out-of-pocket expenses of Shearman & Sterling LLP, counsel for the Administrative Agent, with respect thereto and with respect to advising the Administrative Agent as to its rights and
responsibilities under this Agreement, the Notes and any other Loan Document, and (ii) WPZ agrees to pay, on demand all costs and expenses, if any (including reasonable counsel fees and out-of-pocket expenses), of the Administrative Agent and
each Lender in connection with the enforcement (after the occurrence and during the continuance of an Event of Default and whether through negotiations (including formal workouts or restructurings), legal proceedings or otherwise) against the
Borrower or any Guarantor of any Loan Document. 
 (b) The Borrower agrees, to the fullest extent permitted by law, to indemnify and hold
harmless the Administrative Agent, each Lender (other than any Defaulting Lender) and each Related Party of any of the foregoing Persons (the “Indemnified Parties”) from and against any and all claims, damages, losses, liabilities,
costs, penalties, fees and expenses (including reasonable fees and disbursements of counsel) of any kind or nature whatsoever for which any of them may become liable or which may be incurred by or asserted against any of the Indemnified Parties
(other than claims and related damages, losses, liabilities, costs, penalties, fees and expenses made by one Lender (or its successors or assignees) against another Lender) arising out of, related to or in connection with (i) any Loan Document
or any other document or instrument delivered in connection herewith, (ii) any violation by the Borrower or any Subsidiary thereof of any Environmental Law or any other law, rule, regulation or order, (iii) any Loan or the use or proposed
use of the proceeds of any Loan, (iv) any of the Aggregate Commitments, (v) any transaction in which any proceeds of any Loan are applied or (vi) any investigation, litigation or proceeding, whether or not any of the Indemnified
Parties is a party thereto, related to or in connection with any of the foregoing or any Loan Document (EXPRESSLY INCLUDING ANY SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR EXPENSE ATTRIBUTABLE TO THE ORDINARY, SOLE OR CONTRIBUTORY
NEGLIGENCE OF SUCH INDEMNIFIED PARTY, BUT EXCLUDING ANY SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR EXPENSE SOUGHT TO BE RECOVERED BY ANY INDEMNIFIED PARTY TO THE EXTENT SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, PENALTY, FEE OR
EXPENSE RESULTED FROM THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF SUCH INDEMNIFIED PARTY). IT IS THE INTENT OF THE PARTIES HERETO THAT EACH INDEMNIFIED PARTY SHALL, TO THE EXTENT PROVIDED IN THIS SECTION 9.04(b), BE INDEMNIFIED FOR ITS OWN
ORDINARY, SOLE OR CONTRIBUTORY NEGLIGENCE. 
 (c) To the extent that the Borrower fails to pay any amount required to be paid by it to
the Administrative Agent under paragraph (a) or (b) of this Section, each Revolving Lender severally agrees to pay to the Administrative Agent, such Lender’s Applicable Percentage (determined as of the time that the applicable
unreimbursed expense or indemnity payment is sought) of such unpaid amount; provided that the unreimbursed expense or indemnified loss, claim, damage, liability, cost, penalty, fee or related expense, as the case may be, was incurred by or
asserted against the Administrative Agent in its capacity as such. 

  
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 (d) To the fullest extent permitted by applicable law, no party shall assert, and each party
hereby waives, any claim against any other party or any Indemnified Party, for special, indirect, consequential or punitive damages (as opposed to direct or actual damages) arising out of, in connection with, or as a result of, this Agreement, any
other Loan Document or any agreement or instrument contemplated hereby, the transactions contemplated hereby or thereby, any Loan or the use of the proceeds thereof; provided, however, that the foregoing limitation shall not be deemed to
impair or affect the indemnification obligations of the Borrower under the Loan Documents. No Indemnified Party referred to in paragraph (b) above shall be liable for any damages arising from the use by unintended recipients of any information
or other materials distributed by it through telecommunications, electronic or other information transmission systems in connection with this Agreement or the other Loan Documents or the transactions contemplated hereby or thereby. 

(e) All amounts due under this Section shall be payable not later than 30 days after written demand therefor, such demand to be in reasonable
detail setting forth the basis for and method of calculation of such amounts. 
 Section 9.05 Successors and Assigns. 

(a) Successors and Assigns Generally. The provisions of this Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns permitted hereby, except that the Borrower may not assign or otherwise transfer any of its rights or obligations hereunder without the prior written consent of the Administrative Agent and each Lender and
no Lender may assign or otherwise transfer any of its rights or obligations hereunder except (i) to an assignee in accordance with the provisions of paragraph (b) of this Section, (ii) by way of participation in accordance with the
provisions of paragraph (d) of this Section or (iii) by way of pledge or assignment of a security interest subject to the restrictions of paragraph (f) of this Section (and any other attempted assignment or transfer by any party
hereto shall be null and void). Nothing in this Agreement, expressed or implied, shall be construed to confer upon any Person (other than the parties hereto, their respective successors and assigns permitted hereby, Participants to the extent
provided in paragraph (d) of this Section and, to the extent expressly contemplated hereby, the Related Parties of each of the Administrative Agent and the Lenders) any legal or equitable right, remedy or claim under or by reason of this
Agreement. 
 (b) Assignments by Lenders. Any Lender may at any time assign to one or more assignees all or a portion of its rights
and obligations under this Agreement (including all or a portion of its Commitment and the Loans at the time owing to it); provided that any such assignment shall be subject to the following conditions: 

(i) Minimum Amounts. 

(A) in the case of an assignment of the entire remaining amount of the assigning Lender’s Commitment and the Loans at the
time owing to it or in the case of an assignment to a Lender, an Affiliate of a Lender or an Approved Fund, no minimum amount need be assigned; and 

(B) in any case not described in paragraph (b)(i)(A) of this Section, the aggregate amount of the Commitment (which for this
purpose includes Loans 

  
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outstanding thereunder) or, if the applicable Commitment is not then in effect, the principal outstanding balance of the Loans of the assigning Lender subject to each such assignment (determined
as of the date the Assignment and Assumption with respect to such assignment is delivered to the Administrative Agent or, if “Trade Date” is specified in the Assignment and Assumption, as of the Trade Date) shall not be less than
$5,000,000 and shall be an integral multiple of $1,000,000, unless each of the Administrative Agent and, so long as no Event of Default has occurred and is continuing, WPZ otherwise consents (each such consent not to be unreasonably withheld or
delayed). 
 (ii) Proportionate Amounts. Each partial assignment shall be made as an assignment of a proportionate
part of all the assigning Lender’s rights and obligations under this Agreement with respect to the Loans or the Commitment assigned. 

(iii) Required Consents. No consent shall be required for any assignment except to the extent required by paragraph
(b)(i)(B) of this Section and, in addition: 
 (A) the consent of WPZ (such consent not to be unreasonably withheld or
delayed) shall be required unless (x) an Event of Default has occurred and is continuing at the time of such assignment or (y) such assignment is to a Lender, an Affiliate of a Lender or an Approved Fund; 

(B) the consent of the Administrative Agent (such consent not to be unreasonably withheld or delayed) shall be required for
assignments if such assignment is to a Person that is not a Lender with a Commitment, an Affiliate of such Lender or an Approved Fund with respect to such Lender; 

(C) [reserved]; and 

(D) [reserved]. 

(iv) Assignment and Assumption. The parties to each assignment shall execute and deliver to the Administrative Agent an
Assignment and Assumption, together with a processing and recordation fee of $3,500 (which fee may be waived by the Administrative Agent in its discretion), and the assignee, if it is not a Lender, shall deliver to the Administrative Agent an
Administrative Questionnaire. 
 (v) No Assignment to Borrower. No such assignment shall be made to the Borrower or
the Borrower’s Affiliates or Subsidiaries. 
 (vi) No Assignment to Natural Persons or a Defaulting Lender. No
such assignment shall be made to a natural person or a Defaulting Lender. 
 In connection with any assignment of rights and obligations of any Defaulting
Lender hereunder, no such assignment will be effective unless and until, in addition to the other conditions thereto set forth herein, the parties to the assignment make such additional payments to the Administrative Agent in an aggregate amount
sufficient, upon distribution thereof as appropriate (which may be outright payment, purchases by the assignee of participations or subparticipations, or other compensating 

  
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actions, including funding, with the consent of the Borrower and the Administrative Agent, the applicable Pro Rata Share of Loans previously requested but not funded by the Defaulting Lender, to
each of which the applicable assignee and assignor hereby irrevocably consent), to (x) pay and satisfy in full all payment liabilities then owed by such Defaulting Lender to the Administrative Agent and each other Lender hereunder (and interest
accrued thereon), and (y) acquire (and fund as appropriate) its full Pro Rata Share of all Loans in accordance with its Applicable Percentage. Notwithstanding the foregoing, in the event that any assignment of rights and obligations of any
Defaulting Lender hereunder becomes effective under applicable law without compliance with the provisions of this paragraph, then the assignee of such interest will be deemed to be a Defaulting Lender for all purposes of this Agreement until such
compliance. 
 Subject to acceptance and recording thereof by the Administrative Agent pursuant to paragraph (c) of this Section, from and after the
effective date specified in each Assignment and Assumption, the assignee thereunder shall be a party to this Agreement and, to the extent of the interest assigned by such Assignment and Assumption, have the rights and obligations of a Lender under
this Agreement, and the assigning Lender thereunder shall, to the extent of the interest assigned by such Assignment and Assumption, be released from its obligations under this Agreement (and, in the case of an Assignment and Assumption covering all
of the assigning Lender’s rights and obligations under this Agreement, such Lender shall cease to be a party hereto) but shall continue to be entitled to the benefits of Sections 2.15, 2.17 and 9.04 with respect to facts
and circumstances occurring prior to the effective date of such assignment. Any purported assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with this Section 9.05(b) shall be void, and
any such purported assignment or transfer shall be treated for purposes of this Agreement as a sale by such Lender of a participation in such rights and obligations in accordance with paragraph (d) of this Section. 

(c) Register. The Administrative Agent, acting solely for this purpose as a non-fiduciary agent of the Borrower, shall maintain at one
of its offices a copy of each Assignment and Assumption delivered to it and a register for the recordation of the names and addresses of the Lenders, the Credit Exposure, and principal amounts of the Loans owing to (and stated interest thereon),
each Lender pursuant to the terms hereof from time to time (the “Register”). The entries in the Register shall be conclusive, and the Borrower, the Administrative Agent and the Lenders may treat each Person whose name is recorded in
the Register pursuant to the terms hereof as a Lender hereunder for all purposes of this Agreement, notwithstanding notice to the contrary. The Register shall be available for inspection by the Borrower and any Lender as to its own Commitments and
amounts owing to it, at any reasonable time and from time to time upon reasonable prior notice. Upon its receipt of an executed Assignment and Acceptance, together with any Note subject to such assignment, and the payment of any processing and
registration fee, the Administrative Agent shall (i) accept such Assignment and Acceptance, (ii) record the information contained therein in the Register and (iii) give prompt notice thereof to the parties thereto. 

(d) Participations. Any Lender may at any time, without the consent of, or notice to, the Borrower or the Administrative Agent, sell
participations to any Person (other than a natural person or the Borrower or the Borrower’s Affiliates or Subsidiaries) (each, a “Participant”) in all or a portion of such Lender’s rights and/or obligations under this
Agreement (including all or a portion of its Commitment and/or the Loans owing to it); provided that (i) such Lender’s obligations under this Agreement shall remain unchanged, (ii) such Lender shall remain solely responsible to
the other 

  
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parties hereto for the performance of such obligations, (iii) such Lender receives the documentation required under Section 2.17(f) from such participant (it being understood
that the documentation required under Section 2.17(f) shall be delivered to the participating Lender), (iv) such Lender, acting solely for this purpose as a non-fiduciary agent of the Borrower, maintains a register on which it
enters the name and address of each participant and the principal amounts (and stated interest) of each participant’s interest in the Loans or other obligations under the Loan Documents (the “Participant Register”),
provided that no Lender shall have any obligation to disclose all or any portion of the Participant Register (including the identity of any participant or any information relating to a participant’s interest in any commitments, advances
or its other obligations under any Loan Document) to any Person except to the extent that such disclosure is necessary to establish that such commitment, loan or other obligation is in registered form for federal income Tax purposes or as otherwise
required by law, and (v) the Borrower, the Administrative Agent and the Lenders shall continue to deal solely and directly with such Lender in connection with such Lender’s rights and obligations under this Agreement. 

Any agreement or instrument pursuant to which a Lender sells such a participation shall provide that such Lender shall retain the sole right
to enforce this Agreement and to approve any amendment, modification or waiver of any provision of this Agreement; provided that such agreement or instrument may provide that such Lender will not, without the consent of the Participant, agree
to any amendment, modification or waiver described in Section 9.03(b) that affects such Participant. Subject to paragraph (e) of this Section, the Borrower agrees that each Participant shall be entitled to the benefits of
Sections 2.15, and 2.17 to the same extent as if it were a Lender and had acquired its interest by assignment pursuant to paragraph (b) of this Section. To the extent permitted by law, each Participant also shall be entitled to
the benefits of Section 9.09 as though it were a Lender, provided such Participant agrees to be subject to Section 2.18(c) as though it were a Lender. 

(e) Limitations upon Participant Rights. A Participant shall not be entitled to receive any greater payment under Sections 2.15
or 2.17 than the applicable Lender would have been entitled to receive with respect to the participation sold to such Participant unless the sale of the participation to such Participant is made with the Borrower’s prior written consent.

 (f) Certain Pledges. Any Lender may at any time pledge or assign a security interest in all or any portion of its rights under
this Agreement to secure obligations of such Lender, including any pledge or assignment to secure obligations to a Federal Reserve Bank or any central bank having jurisdiction over such Lender; provided that no such pledge or assignment shall
release such Lender from any of its obligations hereunder or substitute any such pledgee or assignee for such Lender as a party hereto. 

Section 9.06 Survival. All covenants, agreements, representations and warranties made by the Borrower herein and in the
certificates or other instruments delivered in connection with or pursuant to this Agreement shall be considered to have been relied upon by the other parties hereto and shall survive the execution and delivery of this Agreement and the making of
any Loans, regardless of any investigation made by any such other party or on its behalf, and shall continue in full force and effect as long as the principal of or any accrued interest on any Loan or any fee or any other amount payable under this
Agreement is outstanding and unpaid and so long as the Aggregate Commitments have not expired or terminated. The provisions of Sections 2.15, 2.16, 2.17 and 9.04  

  
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and Article VIII shall survive and remain in full force and effect regardless of the consummation of the transactions contemplated hereby, the repayment of the Loans, the expiration or
termination the Aggregate Commitments or the termination of this Agreement or any provision hereof. 
 Section 9.07 Counterparts;
Integration; Effectiveness. This Agreement may be executed in counterparts (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single
contract. This Agreement and any separate letter agreements with respect to fees payable to the Administrative Agent constitute the entire contract among the parties relating to the subject matter hereof and supersede any and all previous agreements
and understandings, oral or written, relating to the subject matter hereof. This Agreement shall become effective on the Closing Date, and thereafter shall be binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns. Delivery of an executed counterpart of a signature page of this Agreement by telecopy or pdf shall be effective as delivery of a manually executed counterpart of this Agreement. 

Section 9.08 Severability. Any provision of this Agreement held to be invalid, illegal or unenforceable in any jurisdiction shall,
as to such jurisdiction, be ineffective to the extent of such invalidity, illegality or unenforceability without affecting the validity, legality and enforceability of the remaining provisions hereof; and the invalidity of a particular provision in
a particular jurisdiction shall not invalidate such provision in any other jurisdiction. 
 Section 9.09 Right of Setoff. If an
Event of Default shall have occurred and be continuing, each Lender is hereby authorized at any time and from time to time, to the fullest extent permitted by applicable law, to set off and apply any and all deposits (general or special, time or
demand, provisional or final, in whatever currency) at any time held and other obligations (in whatever currency) at any time owing by such Lender to or for the credit or the account of the Borrower or any Guarantor against any and all of the
obligations of the Borrower or any Guarantor now or hereafter existing under this Agreement or any other Loan Document to such Lender, irrespective of whether or not such obligations of the Borrower or any Guarantor may be owed to a branch or office
of such Lender different from the branch or office holding such deposit or obligated on such indebtedness, provided that demand has been made to the Borrower for payment of such obligations. The rights of each Lender under this Section are in
addition to other rights and remedies (including other rights of setoff) that such Lender may have. Each Lender agrees to notify the Borrower and the Administrative Agent promptly after any such setoff and application, provided that the
failure to give such notice shall not affect the validity of such setoff and application. 
 Section 9.10 Governing Law;
Jurisdiction; Consent to Service of Process. 
 (a) This Agreement shall be construed in accordance with and governed by the law of the
State of New York. 
 (b) The Borrower hereby irrevocably and unconditionally submits, for itself and its property, to the nonexclusive
jurisdiction of the Supreme Court of the State of New York sitting in New York County and of the United States District Court of the Southern District of New York, and any appellate court from any thereof, in any action or proceeding arising out of
or relating to this Agreement, or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding

  
 72 

 
may be heard and determined in such New York State or, to the extent permitted by law, in such federal court. Each of the parties hereto agrees that a final judgment in any such action or
proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Agreement shall affect any right that the Administrative Agent or any Lender may otherwise have
to bring any action or proceeding relating to this Agreement against the Borrower or its respective properties in the courts of any jurisdiction. 

(c) The Borrower hereby irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection
which it may now or hereafter have to the laying of venue of any suit, action or proceeding arising out of or relating to this Agreement in any court referred to in paragraph (b) of this Section. Each of the parties hereto hereby irrevocably
waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court. 

(d) Each party to this Agreement irrevocably consents to service of process in the manner provided for notices in Section 9.01.
Nothing in this Agreement will affect the right of any party to this Agreement to serve process in any other manner permitted by law. 

Section 9.11 WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT
IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY). EACH PARTY HERETO
(A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT
IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION. 

Section 9.12 Headings. Article and Section headings and the Table of Contents used herein are for convenience of reference only,
are not part of this Agreement and shall not affect the construction of, or be taken into consideration in interpreting, this Agreement. 

Section 9.13 Confidentiality. Each of the Administrative Agent and the Lenders agrees to maintain the confidentiality of the
Information (as defined below), except that Information may be disclosed (a) to its Related Parties (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and
instructed to keep such Information confidential) to the extent used in connection with the administration of this Agreement, (b) to the extent requested by any regulatory authority purporting to have jurisdiction over it (including any
self-regulatory authority, such as the National Association of Insurance Commissioners), (c) to the extent required by applicable laws or regulations or by any subpoena or similar legal process, (d) to any other party hereto,
(e) during the existence of an Event of Default, in connection with the exercise of any remedies hereunder or under any other Loan Document or any action or proceeding relating to this Agreement or any other Loan Document or the enforcement of
rights hereunder or thereunder, (f) subject to an agreement containing provisions substantially the 

  
 73 

 
same as those of this Section, to (i) any assignee of or Participant in, or any prospective assignee of or Participant in, any of its rights or obligations under this Agreement or
(ii) any actual or prospective party (or its managers, administrators, trustees, partners, directors, officers, employees, agents, advisors and other representatives) to any swap, derivative or other similar transaction under which payments are
to be made by reference to the Borrower and its respective obligations, this Agreement or payments hereunder, (iii) any rating agency, (iv) the CUSIP Service Bureau or any similar organization or (v) any assignee in connection with
any pledges permitted by Section 9.05(f), (g) with the consent of WPZ, or (h) to the extent such Information (x) becomes publicly available other than as a result of a breach of this Section or (y) becomes available
to the Administrative Agent, any Lender or any of their respective Affiliates on a nonconfidential basis from a source other than the Borrower. 
 For
purposes of this Section, “Information” means all information received from the Borrower or any of its Subsidiaries relating to the Borrower or any of its Subsidiaries or any of their respective businesses, other than any such information
that is available to the Administrative Agent or any Lender on a nonconfidential basis prior to disclosure by the Borrower or any of its Subsidiaries. Any Person required to maintain the confidentiality of Information as provided in this Section
shall be considered to have complied with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of such Information as such Person would accord to its own confidential information. 

Section 9.14 Treatment of Information. 

(a) Certain of the Lenders may enter into this Agreement and take or not take action hereunder or under the other Loan Documents on the basis
of information that may contain material non-public information with respect to the Borrower or its securities (such material non-public information, “Restricting Information”). Other Lenders may enter into this Agreement and take
or not take action hereunder or under the other Loan Documents on the basis of information that does not contain Restricting Information. Each Lender acknowledges that United States federal and state securities laws prohibit any person from
purchasing or selling securities on the basis of material, non-public information concerning such issuer of such securities or, subject to certain limited exceptions, from communicating such information to any other Person. Neither the
Administrative Agent nor any of its Related Parties nor the Borrower nor any of its Related Parties, shall, by making any Communications (including Restricting Information) available to a Lender, by participating in any conversations or other
interactions with a Lender or otherwise, make or be deemed to make any statement with regard to or otherwise warrant that any such information or Communication does or does not contain Restricting Information (except with respect to the Borrower and
its Related Parties, pursuant to Section 9.14(b)), nor shall the Administrative Agent or any of its Related Parties nor the Borrower nor any of its Related Parties be responsible or liable in any way for any decision a Lender may make to
limit or to not limit its access to Restricting Information. In particular, none of the Administrative Agent nor any of its Related Parties nor the Borrower nor any of its Related Parties (i) shall have, and the Administrative Agent, on behalf
of itself and each of its Related Parties, hereby disclaims, any duty to ascertain or inquire as to whether or not a Lender has or has not limited its access to Restricting Information, such Lender’s policies or procedures regarding the
safeguarding of material, nonpublic information or such Lender’s compliance with applicable laws related thereto or (ii) shall have, or incur, any liability to the Borrower or Lender or any of their respective Related Parties arising out
of or relating to the Administrative Agent or any of its Related Parties providing or not providing Restricting Information to any Lender. 

  
 74 

 (b) The Borrower agrees that (i) all Communications it provides to the Administrative Agent
intended for delivery to the Lenders whether by posting to the Approved Electronic Platform or otherwise shall be clearly and conspicuously marked “PUBLIC” if such Communications do not contain Restricting Information which, at a minimum,
shall mean that the word “PUBLIC” shall appear prominently on the first page thereof, (ii) by marking Communications “PUBLIC,” the Borrower shall be deemed to have authorized the Administrative Agent and the Lenders to treat
such Communications as either publicly available information or not material information (although, in this latter case, such Communications may contain sensitive business information and, therefore, remain subject to the confidentiality
undertakings of Section 9.14) with respect to the Borrower or its securities for purposes of United States federal and state securities laws, (iii) all Communications marked “PUBLIC” may be delivered to all Lenders and may
be made available through a portion of the Approved Electronic Platform designated “Public Side Information,” and (iv) the Administrative Agent shall be entitled to treat any Communications that are not marked “PUBLIC” as
Restricting Information and may post such Communications to a portion of the Approved Electronic Platform not designated “Public Side Information.” Neither the Administrative Agent nor any of its Affiliates shall be responsible for any
statement or other designation by the Borrower regarding whether a Communication contains or does not contain material non-public information with respect to the Borrower or its securities nor shall the Administrative Agent or any of its Affiliates
incur any liability to the Borrower, any Lender or any other Person for any action taken by the Administrative Agent or any of its Affiliates based upon such statement or designation, including any action as a result of which Restricting Information
is provided to a Lender that may decide not to take access to Restricting Information. Nothing in this Section 9.14 shall modify or limit a Lender’s obligations under Section 9.13 with regard to Communications and the
maintenance of the confidentiality of or other treatment of Information. 
 (c) Each Lender acknowledges that circumstances may arise that
require it to refer to Communications that might contain Restricting Information. Accordingly, each Lender agrees that it will nominate at least one designee to receive Communications (including Restricting Information) on its behalf and identify
such designee (including such designee’s contact information) on such Lender’s Administrative Questionnaire. Each Lender agrees to notify the Administrative Agent from time to time of such Lender’s designee’s e-mail address to
which notice of the availability of Restricting Information may be sent by electronic transmission. 
 (d) Each Lender acknowledges that
Communications delivered hereunder and under the other Loan Documents may contain Restricting Information and that such Communications are available to all Lenders generally. Each Lender that elects not to take access to Restricting Information does
so voluntarily and, by such election, acknowledges and agrees that the Administrative Agent and other Lenders may have access to Restricting Information that is not available to such electing Lender. None of the Administrative Agent nor any Lender
with access to Restricting Information shall have any duty to disclose such Restricting Information to such electing Lender or to use such Restricting Information on behalf of such electing Lender, and shall not be liable for the failure to so
disclose or use, such Restricting Information. 

  
 75 

 (e) The provisions of the foregoing clauses of this Section 9.14 are designed to
assist the Administrative Agent, the Lenders and the Borrower, in complying with their respective contractual obligations and applicable law in circumstances where certain Lenders express a desire not to receive Restricting Information
notwithstanding that certain Communications hereunder or under the other Loan Documents or other information provided to the Lenders hereunder or thereunder may contain Restricting Information. Neither the Administrative Agent nor any of its Related
Parties warrants or makes any other statement with respect to the adequacy of such provisions to achieve such purpose nor does the Administrative Agent or any of its Related Parties warrant or make any other statement to the effect that the
Borrower’s or Lender’s adherence to such provisions will be sufficient to ensure compliance by the Borrower or Lender with its contractual obligations or its duties under applicable law in respect of Restricting Information and each of the
Lenders and the Borrower assumes the risks associated therewith. 
 Section 9.15 Interest Rate Limitation. Notwithstanding
anything herein to the contrary, if at any time the interest rate applicable to any Loan, together with all fees, charges and other amounts which are treated as interest on such Loan under applicable law (collectively the
“Charges”), shall exceed the maximum lawful rate (the “Maximum Rate”) which may be contracted for, charged, taken, received or reserved by the Lender holding such Loan in accordance with applicable law, the rate of
interest payable in respect of such Loan hereunder, together with all Charges payable in respect thereof, shall be limited to the Maximum Rate and, to the extent lawful, the interest and Charges that would have been payable in respect of such Loan
but were not payable as a result of the operation of this Section shall be cumulated and the interest and Charges payable to such Lender in respect of other Loans or periods shall be increased (but not above the Maximum Rate therefor) until such
cumulated amount, together (to the extent lawful) with interest thereon at the Federal Funds Effective Rate to the date of repayment, shall have been received by such Lender. 

Section 9.16 No Waiver; Remedies. No failure on the part of any Lender or the Administrative Agent to exercise, and no delay in
exercising, any right under this Agreement or any other Loan Document shall operate as a waiver thereof, nor shall any single or partial exercise of any such right preclude any other or further exercise thereof or the exercise of any other right.
The remedies provided in this Agreement are cumulative and not exclusive of any remedies provided by law. 
 Section 9.17 Liability
of General Partner. It is hereby understood and agreed that the General Partner shall have no personal liability, as general partner or otherwise, for the payment of any amount owing or to be owing hereunder or under the other Loan Documents.
Notwithstanding the foregoing, nothing in this Section 9.17 shall be construed to modify or supersede any obligation of the General Partner to restore any negative balance in its capital account (maintained by WPZ pursuant to the
Partnership Agreement) upon liquidation of its interest in the Borrower. 
 Section 9.18 USA Patriot Act Notice. Each Lender and
Administrative Agent (for itself and not on behalf of any Lender) hereby notifies the Borrower that pursuant to the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2003)) (the
“Act”), it is required to obtain, verify and record information that identifies the Borrower, which information includes the name and address of the Borrower and other information that will allow such Lender or the Administrative
Agent, as applicable, to identify the Borrower in accordance with the Act. The Borrower shall, following a request by the Administrative Agent or any Lender, provide all 

  
 76 

 
documentation and other information that the Administrative Agent or such Lender reasonably requests in order to comply with its ongoing obligations under applicable “know your
customer” and anti-money laundering rules and regulations, including the Act. 
 Section 9.19 No Advisory or Fiduciary
Responsibility. In connection with all aspects of each transaction contemplated hereby, the Borrower acknowledges and agrees, and acknowledges its Affiliates’ understanding, that: (a) the credit facility provided for hereunder and any
related arranging or other services in connection therewith (including in connection with any amendment, waiver or other modification hereof or of any other Loan Document) are an arm’s-length commercial transaction between the Borrower, on the
one hand, and the Administrative Agent and the Lenders, on the other hand, and the Borrower is capable of evaluating and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated hereby and by the
other Loan Documents (including any amendment, waiver or other modification hereof or thereof); (b) in connection with the process leading to such transaction, the Administrative Agent and the Lenders are and have been acting solely as
principals and are not the financial advisors, agents or fiduciaries, for the Borrower or any of its Affiliates, stockholders, creditors or employees or any other Person; (c) the Administrative Agent and the Lenders have not assumed or will
assume an advisory, agency or fiduciary responsibility in favor of the Borrower with respect to any of the transactions contemplated hereby or the process leading thereto, including with respect to any amendment, waiver or other modification hereof
or of any other Loan Document (irrespective of whether the Administrative Agent or any Lender advised or is currently advising the Borrower or any of its Affiliates on other matters) and the Administrative Agent and the Lenders have no obligation to
the Borrower or any of its Affiliates with respect to the transactions contemplated hereby except those obligations expressly set forth herein and in the other Loan Documents; (d) the Administrative Agent, the Lenders and their respective
Affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Borrower and its Affiliates, and the Administrative Agent and the Lenders have no obligation to disclose any of such interests by virtue
of any advisory, agency or fiduciary relationship; and (e) the Administrative Agent and the Lenders have not provided and will not provide any legal, accounting, regulatory or Tax advice with respect to any of the transactions contemplated
hereby (including any amendment, waiver or other modification hereof or of any other Loan Document) and the Borrower has consulted its own legal, accounting, regulatory and Tax advisors to the extent it has deemed appropriate. The Borrower hereby
waives and releases, to the fullest extent permitted by law, any claims that it may have against the Administrative Agent or the Lenders with respect to any breach or alleged breach of agency (other than against the Administrative Agent acting in
its administrative capacity) or fiduciary duty; provided, however that it being understood and agreed that the use of the term “agent” herein or in any other Loan Documents (or any other similar term) with reference to the
Administrative Agent is not intended to connote any fiduciary or other implied (or express) obligations arising under agency doctrine of any applicable law. Instead such term is used as a matter of market custom, and is intended to create or reflect
only an administrative relationship between contracting parties. 
 Section 9.20 GP Buy-in. Notwithstanding any term or
provision herein or in any other Loan Document, the parties hereto agree that any GP Buy-in and any transaction related thereto is expressly permitted under this Agreement and each other Loan Document without any further action, waiver, consent or
agreement by the Administrative Agent, any other agent or any Lender from time to time party hereto. As used herein, “GP Buy-in” refers to any sale, lease, transfer or disposition by Williams of its Equity Interests in the General
Partner to WPZ. 

  
 77 

 Section 9.21 Merger. Notwithstanding any term or provision herein or in any other
Loan Document, the parties hereto agree that the ACMP Merger and each other transaction related thereto is expressly permitted under this Agreement and each other Loan Document without any further action, waiver, consent or agreement by the
Administrative Agent, any other agent or any Lender from time to time party hereto; provided that, for the avoidance of doubt, the Borrower shall be required to comply with Section 6.07, notwithstanding this
Section 9.21. 
 [Signature Pages to Follow] 

  
 78 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their
respective authorized officers as of the day and year first above written. 
  

			
	WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC, General Partner
		
	By:	 	 /s/ Peter S. Burgess

	Name:	 	Peter S. Burgess
	Title:	 	Vice President and Treasurer
	
	BARCLAYS BANK PLC,
	Individually and as Administrative Agent
		
	By:	 	 /s/ Ann E. Sutton

	Name:	 	Ann E. Sutton
	Title:	 	Director

 Signature Page to Credit Agreement 

Williams Partners L.P. 

 Schedule 2.01 

Commitments 
  

					
	 Lender
	  	Commitment	 
	 Barclays Bank PLC
	  	$	1,500,000,000.00	  

  
 1 

 Schedule 6.04 

Restrictive Agreements 
 None. 

  
 2 

 EXHIBIT A 

FORM OF 
 ASSIGNMENT AND
ACCEPTANCE 
 Reference is made to the Credit Agreement dated as of February 3, 2015 (as amended and in effect on the date hereof,
the “Credit Agreement”), among Williams Partners L.P., the Lenders party thereto and Barclays Bank PLC, as Administrative Agent for the Lenders. Terms defined in the Credit Agreement are used herein with the same meanings. 

The Assignor named herein hereby sells and assigns, without recourse, to the Assignee named herein, and the Assignee hereby purchases and
assumes, without recourse, from the Assignor, effective as of the Assignment Date set forth herein the interests set forth herein (the “Assigned Interest”) in the Assignor’s rights and obligations under the Credit Agreement,
including, without limitation, the interests set forth herein in the Commitment of the Assignor on the Assignment Date and Loans owing to the Assignor which are outstanding on the Assignment Date, but excluding accrued interest and fees to and
excluding the Assignment Date. The Assignee hereby acknowledges receipt of a copy of the Credit Agreement. From and after the Assignment Date (i) the Assignee shall be a party to and be bound by the provisions of the Credit Agreement and, to
the extent of the Assigned Interest, have the rights and obligations of a Lender thereunder and (ii) the Assignor shall, to the extent of the Assigned Interest, relinquish its rights and be released from its obligations under the Credit
Agreement. 
 This Assignment and Acceptance is being delivered to the Administrative Agent together with (i) if the Assignee is a
Foreign Lender, any documentation required to be delivered by the Assignee pursuant to Section 2.17(f) of the Credit Agreement, duly completed and executed by the Assignee, and (ii) if the Assignee is not already a Lender under the
Credit Agreement, an Administrative Questionnaire in the form supplied by the Administrative Agent, duly completed by the Assignee. The [Assignee/Assignor] shall pay the fee payable to the Administrative Agent pursuant to Section 9.05(b)
of the Credit Agreement. 
 This Assignment and Acceptance shall be governed by and construed in accordance with the laws of the State of
New York. 
 Date of Assignment: 
 Legal Name of
Assignor: 
 Legal Name of Assignee: 
 Assignee’s Address
for Notices: 
 Effective Date of Assignment 

(“Assignment Date”): 

									
	 	  	Principal Amount Assigned	 	  	Percentage Assigned of
Commitment (set forth, to at least 8
decimals, as a percentage of the
aggregate
Commitments of all
Lenders thereunder)	 
			
	 Commitment Assigned:
	  	$	 	  	  	 	            	% 
	 Loans:
	  				  			

 Notwithstanding any term or provision herein or in any other agreement, instrument or document between the parties to this
Assignment and Acceptance evidencing or governing the transfer of the Assigned Interest from the Assignor to the Assignee (including any defined terms or section headings therein), the parties to this Assignment and Assumption intend that the
transaction providing for transfer of the Assigned Interest from the Assignor to the Assignee be a sale by the Assignor and a purchase by the Assignee of the Assigned Interest, and not an assignment by the Assignor and an assumption by the Assignee
of the Assigned Interest. 
 The terms set forth above are hereby agreed to: 

 

					
	[Name of Assignor], as Assignor
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	
	
	[Name of Assignee], as Assignee
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 2 

 The undersigned hereby consent to the within assignment: 

 

													
	Williams Partners L.P.	 		 	 Barclays Bank PLC,
 Individually and
as Administrative Agent

				
	By:	 	WPZ GP LLC,	 		 	
	General Partner	 		 	
					
	By:	 	  
	 		 	By:	 	  

		 	Name:	 		 		 		 	Name:	 	
		 	Title:	 		 		 		 	Title:	 	

  
 3 

 EXHIBIT B 

FORM OF BORROWING REQUEST 

Dated                      

Barclays Bank PLC, 
 as Administrative Agent 

745 Seventh Ave. 
 New York, NY 10019 

Attn: Jake Lam 
 Ladies and Gentlemen: 

This Borrowing Request is delivered to you by Williams Partners L.P. (the “Borrower”) under Section 2.03 of the
Credit Agreement dated as of February 3, 2015 (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), by and among the Borrower, the Lenders party thereto, and Barclays Bank PLC, as
Administrative Agent. 
 1. The Borrower hereby requests that the Lenders make a Loan or Loans in the aggregate principal amount of
$        (the “Loan” or the “Loans”).1 

2. The Borrower hereby requests that the Loan or Loans be made on the following Business Day:
                    .2 

3. The Borrower hereby requests that the Loan or Loans be of the Type and have the Interest Period set forth below: 

 

							
	 Type of

Loan
	  	Principal
Component of
Loan	  	Interest Period
(if applicable)	  	Maturity Date
for
Interest Period
(if applicable)
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	

 4. The Borrower hereby requests that the funds from the Loan or Loans be disbursed to the following bank
account:                     . 

 

	1 	Complete with an amount in accordance with Section 2.03 of the Credit Agreement. 

	2 	Complete with a Business Day in accordance with Section 2.03 of the Credit Agreement. 

  
 1 

 5. After giving effect to any requested Loan, the Aggregate Outstanding Credit Exposure as of the
date hereof (including the requested Loans) does not exceed the maximum amount permitted to be outstanding pursuant to the terms of the Credit Agreement. 

6. All of the conditions applicable to the Loans requested herein as set forth in the Credit Agreement will be satisfied on the date of such
Loans. 
 7. All capitalized undefined terms used herein have the meanings assigned thereto in the Credit Agreement. 

IN WITNESS WHEREOF, the undersigned have executed this Borrowing Request this     day of
            ,         . 
  

					
	WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 2 

 EXHIBIT C 

FORM OF 
 INTEREST
ELECTION REQUEST 
 Dated
                     
 Barclays Bank PLC, 

as Administrative Agent 
 745 Seventh Ave. 

New York, NY 10019 
 Attn: Jake Lam 

Ladies and Gentlemen: 
 This irrevocable
Interest Election Request (the “Interest Election Request”) is delivered to you under Section 2.08 of the Credit Agreement dated as of February 3, 2015 (as amended, restated, supplemented or otherwise modified from
time to time, the “Credit Agreement”), by and among Williams Partners L.P. (the “Borrower”), the Lenders party thereto (the “Lenders”), and Barclays Bank PLC, as Administrative Agent (the
“Administrative Agent”). 
 1. This Interest Election Request is submitted for the purpose of: 

(a) [Converting] [Continuing] a
                    Loan [into] [as] a
                    Loan.1 

(b) The aggregate outstanding principal balance of such Loan is $        . 

(c) The last day of the current Interest Period for such Loan is
                    .2 

(d) The principal amount of such Loan to be [converted] [continued] is $        .3 
 (e) The requested effective date of the [conversion] [continuation] of
such Loan is                     .4 

(f) The requested Interest Period applicable to the [converted] [continued] Loan is
                    .5 

 

	1 	Delete the bracketed language and insert “ABR” or “Eurodollar”, as applicable, in each blank. 

	2 	Insert applicable date for any Eurodollar Loan being converted or continued. 

	3 	Complete with an amount in compliance with Section 2.08 of the Credit Agreement. 

	4 	Complete with a Business Day in compliance with Section 2.08 of the Credit Agreement. 

	5 	Complete for each Eurodollar Loan in compliance with the definition of the term “Interest Period” specified in Section 1.01. 

  
 1 

 2. With respect to a Borrowing to be converted to or continued as a Eurodollar Borrowing, no
Event of Default with respect to the Borrower making this Interest Election Request exists, and none will exist upon the conversion or continuation of the Borrowing requested herein. 

3. All capitalized undefined terms used herein have the meanings assigned thereto in the Credit Agreement. 

IN WITNESS WHEREOF, the undersigned has executed this Interest Election Request this     day of
            ,         . 
  

					
	WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 2 

 EXHIBIT D 

FORM OF COMPLIANCE CERTIFICATE 

The undersigned hereby certifies that [he/she] is the
                                        of
Williams Partners L.P. (the “Borrower”), and that as such [he/she] is authorized to execute this certificate on behalf of the Borrower. With reference to the Credit Agreement dated as of February 3, 2015 (as amended, restated,
supplemented or otherwise modified from time to time, the “Agreement”), among the Borrower, Barclays Bank PLC, as Administrative Agent (the “Agent”), for the lenders (the “Lenders”), which are or
become a party thereto, and such Lenders, the undersigned represents and warrants as follows (each capitalized term used herein having the same meaning given to it in the Agreement unless otherwise specified); 

(a) [There currently does not exist any Default under the Agreement.] [Attached hereto is a schedule specifying the details of [a] certain
Default[s] which exist under the Agreement and the action taken or proposed to be taken with respect thereto.] 
 (b) Attached hereto are the
detailed computations necessary to determine whether the Borrower is in compliance with Section 6.07(a) of the Agreement as of the end of the [fiscal quarter][fiscal year] ending
            . 
 EXECUTED AND DELIVERED this     day of
            , 20    . 
  

					
	WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 1 

 EXHIBIT E 

FORM OF NOTE 
  

			
	$        	  	            , 20    

 WILLIAMS PARTNERS L.P., a Delaware limited partnership (the “Borrower”), for value received,
promises and agrees to pay to
                                        (the
“Lender”), or order, at the payment office of BARCLAYS BANK PLC, as Administrative Agent, at [—], the principal sum of
                                        AND
NO/100 DOLLARS ($        ), or such lesser amount as shall equal the aggregate unpaid principal amount of the Loans owed to the Lender under the Credit Agreement, as hereafter defined, in lawful money of the
United States of America and in immediately available funds, on the dates and in the principal amounts provided in the Credit Agreement, and to pay interest on the unpaid principal amount as provided in the Credit Agreement for such Loans, at such
office, in like money and funds, for the period commencing on the date of each such Loan until such Loan shall be paid in full, at the rates per annum and on the dates provided in the Credit Agreement. 

This Note (the “Note”) evidences the Loans owed to the Lender under that certain Credit Agreement dated as of
February 3, 2015, by and among Williams Partners L.P., Barclays Bank PLC, as Administrative Agent (the “Administrative Agent”), and the other financial institutions parties thereto (including the Lender) (such Credit Agreement,
together with all amendments or supplements thereto, being the “Credit Agreement”), and shall be governed by the Credit Agreement. Capitalized terms used in this note and not defined in this note, but which are defined in the Credit
Agreement, have the respective meanings herein as are assigned to them in the Credit Agreement. 
 The Lender is hereby authorized by the
Borrower to endorse on Schedule A (or a continuation thereof) attached to this Note, the Type of each Loan owed to the Lender, the amount and date of each payment or prepayment of principal of each such Loan received by the Lender and the
Interest Periods and interest rates applicable to each Loan, provided that any failure by the Lender to make any such endorsement shall not affect the obligations of the Borrower under the Credit Agreement or under this Note in respect of
such Loans. 
 This Note may be held by the Lender for the account of its applicable lending office and, except as otherwise provided in the
Credit Agreement, may be transferred from one lending office of the Lender to another lending office of the Lender from time to time as the Lender may determine. 

Except only for any notices which are specifically required by the Credit Agreement, the Borrower and any and all co-makers, endorsers,
guarantors and sureties severally waive notice (including but not limited to notice of intent to accelerate and notice of acceleration, notice of protest and notice of dishonor), demand, presentment for payment, protest, diligence in collecting and
the filing of suit for the purpose of fixing liability, and consent that the time of payment hereof may be extended and re-extended from time to time without notice to any of them. Each such person agrees that its liability on or with respect to
this Note shall not be 

  
 1 

 
affected by any release of or change in any guaranty or security at any time existing or by any failure to perfect or maintain perfection of any lien against or security interest in any such
security or the partial or complete unenforceability of any guaranty or other surety obligation, in each case in whole or in part, with or without notice and before or after maturity. 

The Credit Agreement provides for the acceleration of the maturity of this Note upon the occurrence of certain events and for prepayment of
Loans upon the terms and conditions specified therein. Reference is made to the Credit Agreement for all other pertinent purposes. 
 This
Note is issued pursuant to and is entitled to the benefits of the Credit Agreement. 
 [It is hereby understood and agreed that WPZ GP LLC,
the general partner of the Borrower, shall have no personal liability, as general partner or otherwise, for the payment of any amount owing or to be owing hereunder. Notwithstanding the foregoing, nothing in this Note shall be construed to modify or
supersede any obligation of WPZ GP LLC, as general partner of the Borrower, to restore any negative balance in its capital account (maintained by the Borrower pursuant to the Partnership Agreement) upon liquidation of its interest in the Borrower.]

 THIS NOTE SHALL BE CONSTRUED IN
ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF
NEW YORK AND THE UNITED STATES OF AMERICA FROM TIME TO TIME
IN EFFECT. 
 This Note and the other Loan Documents represent the final agreement among the parties and may
not be contradicted by evidence of prior, contemporaneous, or subsequent oral agreements of the parties. There are no unwritten oral agreements among the parties. 

[Remainder of page intentionally left blank] 

  
 2 

 
					
	WILLIAMS PARTNERS L.P.
		
	By:	 	WPZ GP LLC
		 	its General Partner
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

 [Signature Page to Note] 

 SCHEDULE A 

TO 
 NOTE 

This Note evidences the Loans owed to the Lender under the Credit Agreement, in the principal amount set forth below and the applicable Interest Periods and
rates for each such Loan, subject to the payments of principal set forth below: 
 SCHEDULE 

OF 
 LOANS AND PAYMENTS OF
PRINCIPAL AND INTEREST 
  

																	
	Date	  	Interest
Period	  	Rate	  	Principal
Amount of
Loan	  	Amount of
Principal
Paid or
Prepaid	  	Interest
Paid	  	Balance
of
Loans	  	Notation
Made
by	 
								
		  		  		  		  		  		  		  			
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
														 	 	  
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 
	     
																
		  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  	  
	  
	 

 EXHIBIT F-1 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Lenders That Are Not Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Credit Agreement dated as of February 3, 2015 (as the same may be amended, supplemented or otherwise
modified from time to time, the “Credit Agreement”), among Williams Partners L.P. (the “Borrower”), Barclays Bank PLC, and the other financial institutions named herein or in Assignment and Assumption Agreements, in
their capacities as Lenders, and Barclays Bank PLC, in its capacity as Agent. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Credit Agreement. 

Pursuant to the provisions of Section 2.17 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole
record and beneficial owner of the Loan(s) in respect of which it is providing this certificate, (ii) it is not a bank within the meaning of Section 881(c)(3)(A) of the Code, (iii) it is not a ten percent shareholder of any Borrower
within the meaning of Section 871(h)(3)(B) of the Code and (iv) it is not a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 

The undersigned has furnished the Agent and the Borrowers with a certificate of its status as not a United States person (as defined in
section 7701(a)(30) of the Code) on IRS Form W-8BEN or W-8BEN-E. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform the Borrowers and
the Agent, and (2) the undersigned shall have at all times furnished the Borrowers and the Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned,
or in either of the two calendar years preceding such payments. 
  

			
	[NAME OF LENDER]
		
	By:	 	  

		 	Name:
		 	Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-2 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Participants That Are Not Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Credit Agreement dated as of February 3, 2015 (as the same may be amended, supplemented or otherwise
modified from time to time, the “Credit Agreement”), among Williams Partners L.P. (the “Borrower”), Barclays Bank PLC, and the other financial institutions named herein or in Assignment and Assumption Agreements, in
their capacities as Lenders, and Barclays Bank PLC, in its capacity as Agent. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Credit Agreement. 

Pursuant to the provisions of Section 2.17 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole
record and beneficial owner of the participation in respect of which it is providing this certificate, (ii) it is not a bank within the meaning of Section 881(c)(3)(A) of the Code, (iii) it is not a ten percent shareholder of any
Borrower within the meaning of Section 871(h)(3)(B) of the Code, and (iv) it is not a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 

The undersigned has furnished its participating Lender with a certificate of its status as not a United States person (as defined in section
7701(a)(30) of the Code) on IRS Form W-8BEN or W-8BEN-E. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender in writing,
and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two
calendar years preceding such payments. 
  

			
	[NAME OF PARTICIPANT]
		
	By:	 	  

		 	Name:
		 	Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-3 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Participants That Are Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Credit Agreement dated as of February 3, 2015 (as the same may be amended, supplemented or otherwise
modified from time to time, the “Credit Agreement”), among Williams Partners L.P. (the “Borrower”), Barclays Bank PLC, and the other financial institutions named herein or in Assignment and Assumption Agreements, in
their capacities as Lenders, and Barclays Bank PLC, in its capacity as Agent. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Credit Agreement. 

Pursuant to the provisions of Section 2.17 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole
record owner of the participation in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the
undersigned nor any of its direct or indirect partners/members is a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code,
(iv) none of its direct or indirect partners/members is a ten percent shareholder of any Borrower within the meaning of Section 871(h)(3)(B) of the Code and (v) none of its direct or indirect partners/members is a controlled foreign
corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 
 The undersigned has furnished its
participating Lender with IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or W-8BEN-E or (ii) an IRS Form W-8IMY
accompanied by an IRS Form W-8BEN or W-8BEN-E from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemption. By executing this certificate, the undersigned agrees that (1) if the information
provided on this certificate changes, the undersigned shall promptly so inform such Lender and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the
calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. 
  

			
	[NAME OF PARTICIPANT]
		
	By:	 	  

		 	Name:
		 	Title:
	
	Date:                  , 20[    ]

  
 1 

 EXHIBIT F-4 

FORM OF 
 U.S. TAX
COMPLIANCE CERTIFICATE 
 (For Foreign Lenders That Are Partnerships For U.S. Federal Income Tax Purposes) 

Reference is made to that certain Credit Agreement dated as of February 3, 2015 (as the same may be amended, supplemented or otherwise
modified from time to time, the “Credit Agreement”), among Williams Partners L.P. (the “Borrower”), Barclays Bank PLC, and the other financial institutions named herein or in Assignment and Assumption Agreements, in
their capacities as Lenders, and Barclays Bank PLC, in its capacity as Agent. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Credit Agreement. 

Pursuant to the provisions of Section 2.17 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole
record owner of the Loan(s) in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such Loan(s), (iii) with respect to the extension of credit pursuant to this
Credit Agreement or any other Loan Document, neither the undersigned nor any of its direct or indirect partners/members is a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the
meaning of Section 881(c)(3)(A) of the Code, (iv) none of its direct or indirect partners/members is a ten percent shareholder of any Borrower within the meaning of Section 871(h)(3)(B) of the Code and (v) none of its direct or
indirect partners/members is a controlled foreign corporation related to any Borrower as described in Section 881(c)(3)(C) of the Code. 

The undersigned has furnished the Agent and the Borrowers with IRS Form W-8IMY accompanied by one of the following forms from each of its
partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or W-8BEN-E or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN or W-8BEN-E from each of such partner’s/member’s beneficial
owners that is claiming the portfolio interest exemption. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform the Borrowers and the
Agent, and (2) the undersigned shall have at all times furnished the Borrowers and the Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in
either of the two calendar years preceding such payments. 
  

			
	[NAME OF LENDER]
		
	By:		  

			Name:
			Title:
	
	Date:                  , 20[    ]

  
 1

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