Exhibit 10.1

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT

dated as of March 30, 2007

among

ONEOK PARTNERS, L.P.,

as Borrower

THE LENDERS
FROM TIME TO TIME PARTY HERETO,

SUNTRUST BANK,

as Administrative Agent

and

WACHOVIA BANK, NATIONAL ASSOCIATION,

as Syndication Agent

and

BMO CAPITAL MARKETS,

BARCLAYS BANK PLC,

and

CITIBANK, N.A.,

as
Co-Documentation Agents



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SUNTRUST ROBINSON HUMPHREY

(a division of SunTrust Capital Markets, Inc.)

and

WACHOVIA CAPITAL MARKETS, LLC,

as Co-Lead Arrangers and Book Managers



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TABLE OF CONTENTS



|                                                                    |  |               |  |                                                             |  |     
|------------------------------------------------------------------- |  | ------------- |  | ----------------------------------------------------------- |  | ----
|                                                                    |  |               |  |                                                             |  | Page
|ARTICLE I.    DEFINITIONS; CONSTRUCTION                             |  | 1            
|.                                                                   |  | Section 1.1   |  | Definitions                                                 |  | 1   
|                                                                    |  | Section 1.2.  |  | Classifications of Loans and Borrowings                     |  | 26  
|                                                                    |  | Section 1.3.  |  | Accounting Terms and Determination                          |  | 26  
|                                                                    |  | Section 1.4.  |  | Terms Generally                                             |  | 26  
|                                                                    | 
|ARTICLE II.    AMOUNT AND TERMS OF THE COMMITMENTS                  |  | 27           
|                                                                    |  | Section 2.1.  |  | General Description of Facilities                           |  | 27  
|                                                                    |  | Section 2.2.  |  | Revolving Loans                                             |  | 27  
|                                                                    |  | Section 2.3.  |  | Procedure for Revolving Borrowings                          |  | 27  
|                                                                    |  | Section 2.4.  |  | Swingline Commitment                                        |  | 28  
|                                                                    |  | Section 2.5.  |  | Funding of Borrowings                                       |  | 29  
|                                                                    |  | Section 2.6.  |  | Interest Elections                                          |  | 30  
|                                                                    |  | Section 2.7.  |  | Optional Reduction and Termination of Commitments           |  | 31  
|                                                                    |  | Section 2.8.  |  | Repayment of Loans                                          |  | 32  
|                                                                    |  | Section 2.9.  |  | Evidence of Indebtedness                                    |  | 32  
|                                                                    |  | Section 2.10. |  | Prepayments                                                 |  | 32  
|                                                                    |  | Section 2.11. |  | Interest on Loans                                           |  | 33  
|                                                                    |  | Section 2.12. |  | Fees                                                        |  | 34  
|                                                                    |  | Section 2.13. |  | Computation of Interest and Fees                            |  | 35  
|                                                                    |  | Section 2.14. |  | Inability to Determine Interest Rates                       |  | 35  
|                                                                    |  | Section 2.15. |  | Illegality                                                  |  | 36  
|                                                                    |  | Section 2.16. |  | Increased Costs                                             |  | 36  
|                                                                    |  | Section 2.17. |  | Funding Indemnity                                           |  | 37  
|                                                                    |  | Section 2.18. |  | Taxes                                                       |  | 38  
|                                                                    |  | Section 2.19. |  | Payments Generally; Pro Rata Treatment; Sharing of Set-offs |  | 39  
|                                                                    |  | Section 2.20. |  | Letters of Credit                                           |  | 41  
|                                                                    |  | Section 2.21. |  | Increase of Commitments; Additional Lenders                 |  | 45  
|                                                                    |  | Section 2.22. |  | Mitigation of Obligations                                   |  | 46  
|                                                                    | 
|ARTICLE III.    CONDITIONS PRECEDENT TO LOANS AND LETTERS OF CREDIT |  | 49           
|                                                                    |  | Section 3.1.  |  | Conditions To Effectiveness                                 |  | 49  
|                                                                    |  | Section 3.2.  |  | Each Credit Event                                           |  | 51  
|                                                                    |  | Section 3.3.  |  | Delivery of Documents                                       |  | 51  
|                                                                    | 
|ARTICLE IV.    REPRESENTATIONS AND WARRANTIES                       |  | 51           
|                                                                    |  | Section 4.1.  |  | Existence; Power                                            |  | 51  
|                                                                    |  | Section 4.2.  |  | Organizational Power; Authorization                         |  | 52  
|                                                                    |  | Section 4.3.  |  | Governmental Approvals; No Conflicts                        |  | 52  
|                                                                    |  | Section 4.4.  |  | Financial Statements                                        |  | 52  
|                                                                    |  | Section 4.5.  |  | Litigation and Environmental Matters                        |  | 52  
|                                                                    |  | Section 4.6.  |  | Compliance with Laws and Agreements                         |  | 53  



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|                                    |  |               |  |                                                                             |  |   
|----------------------------------- |  | ------------- |  | --------------------------------------------------------------------------- |  | --
|                                    |  | Section 4.7.  |  | Investment Company Act, Etc.                                                |  | 53
|                                    |  | Section 4.8.  |  | Taxes                                                                       |  | 53
|                                    |  | Section 4.9.  |  | Margin Regulations                                                          |  | 53
|                                    |  | Section 4.10. |  | ERISA                                                                       |  | 53
|                                    |  | Section 4.11. |  | Ownership of Property                                                       |  | 54
|                                    |  | Section 4.12. |  | Disclosure                                                                  |  | 54
|                                    |  | Section 4.13. |  | Labor Relations                                                             |  | 54
|                                    |  | Section 4.14. |  | Subsidiaries                                                                |  | 55
|                                    |  | Section 4.15. |  | Insolvency                                                                  |  | 55
|                                    |  | Section 4.16. |  | OFAC                                                                        |  | 55
|                                    |  | Section 4.17. |  | Patriot Act                                                                 |  | 55
|                                    | 
|ARTICLE V.    AFFIRMATIVE COVENANTS |  | 55           
|                                    |  | Section 5.1.  |  | Financial Statements and Other Information                                  |  | 55
|                                    |  | Section 5.2.  |  | Notices of Material Events                                                  |  | 57
|                                    |  | Section 5.3.  |  | Existence; Conduct of Business                                              |  | 58
|                                    |  | Section 5.4.  |  | Compliance with Laws, Etc.                                                  |  | 58
|                                    |  | Section 5.5.  |  | Payment of Obligations                                                      |  | 58
|                                    |  | Section 5.6.  |  | Books and Records                                                           |  | 58
|                                    |  | Section 5.7.  |  | Visitation, Inspection, Etc.                                                |  | 58
|                                    |  | Section 5.8.  |  | Maintenance of Properties; Insurance                                        |  | 59
|                                    |  | Section 5.9.  |  | Use of Proceeds and Letters of Credit                                       |  | 59
|                                    |  | Section 5.10. |  | Pari Passu Status                                                           |  | 59
|                                    |  | Section 5.11. |  | Maintenance of Tax Status                                                   |  | 59
|                                    | 
|ARTICLE VI.    FINANCIAL COVENANTS  |  | 59           
|                                    |  | Section 6.1.  |  | Leverage Ratio                                                              |  | 59
|                                    | 
|ARTICLE VII. NEGATIVE COVENANTS     |  | 60           
|                                    |  | Section 7.1.  |  | Indebtedness; Preferred Interests.                                          |  | 60
|                                    |  | Section 7.2.  |  | Negative Pledge                                                             |  | 61
|                                    |  | Section 7.3.  |  | Fundamental Changes                                                         |  | 61
|                                    |  | Section 7.4.  |  | Investments, Loans, Etc.                                                    |  | 62
|                                    |  | Section 7.5.  |  | Restricted Payments                                                         |  | 63
|                                    |  | Section 7.7.  |  | Transactions with Affiliates                                                |  | 64
|                                    |  | Section 7.8.  |  | Restrictive Agreements                                                      |  | 64
|                                    |  | Section 7.9.  |  | Government Regulations                                                      |  | 64
|                                    |  | Section 7.10. |  | Hedging Transactions                                                        |  | 64
|                                    |  | Section 7.11. |  | Accounting Changes                                                          |  | 64
|                                    |  | Section 7.12. |  | Restrictions on Agreements Governing Indebtedness                           |  | 64
|                                    |  | Section 7.13. |  | Certain Amendments to Cash Distribution Policies and Partnership Agreements |  | 65
|                                    | 
|ARTICLE VIII.    EVENTS OF DEFAULT  |  | 65           
|                                    |  | Section 8.1.  |  | Events of Default                                                           |  | 65



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|                                        |  |                |  |                                                            |  |   
|--------------------------------------- |  | -------------- |  | ---------------------------------------------------------- |  | --
|ARTICLE IX.    THE ADMINISTRATIVE AGENT |  | 68            
|                                        |  | Section 9.1.   |  | Appointment of Administrative Agent                        |  | 68
|                                        |  | Section 9.2.   |  | Nature of Duties of Administrative Agent                   |  | 68
|                                        |  | Section 9.3.   |  | Lack of Reliance on the Administrative Agent               |  | 69
|                                        |  | Section 9.4.   |  | Certain Rights of the Administrative Agent                 |  | 69
|                                        |  | Section 9.5.   |  | Reliance by Administrative Agent                           |  | 70
|                                        |  | Section 9.6.   |  | The Administrative Agent in its Individual Capacity        |  | 70
|                                        |  | Section 9.7.   |  | Successor Administrative Agent                             |  | 70
|                                        |  | Section 9.8.   |  | Authorization to Execute other Loan Documents              |  | 71
|                                        |  | Section 9.9.   |  | Syndication Agent and Co-Documentation Agents              |  | 71
|                                        | 
|ARTICLE X.    MISCELLANEOUS             |  | 71            
|                                        |  | Section 10.1.  |  | Notices                                                    |  | 71
|                                        |  | Section 10.2.  |  | Waiver; Amendments                                         |  | 73
|                                        |  | Section 10.3.  |  | Expenses; Indemnification                                  |  | 74
|                                        |  | Section 10.4.  |  | Successors and Assigns                                     |  | 76
|                                        |  | Section 10.5.  |  | Governing Law; Jurisdiction; Consent to Service of Process |  | 79
|                                        |  | Section 10.6.  |  | Waiver of Jury Trial                                       |  | 80
|                                        |  | Section 10.7.  |  | Right of Setoff                                            |  | 80
|                                        |  | Section 10.8.  |  | Counterparts; Integration                                  |  | 81
|                                        |  | Section 10.9.  |  | Survival                                                   |  | 81
|                                        |  | Section 10.10. |  | Severability                                               |  | 81
|                                        |  | Section 10.11. |  | Confidentiality                                            |  | 82
|                                        |  | Section 10.12. |  | Interest Rate Limitation                                   |  | 82
|                                        |  | Section 10.13. |  | Waiver of Effect of Seal                                   |  | 82
|                                        |  | Section 10.14. |  | Patriot Act                                                |  | 82
|                                        |  | Section 10.15. |  | No General Partner Liability                               |  | 83
|                                        |  | Section 10.16. |  | Amendment and Restatement                                  |  | 83



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SCHEDULES



|                     |  |   |  |                                                    
|-------------------- |  | - |  | ---------------------------------------------------
|Schedule I           |  |  |  | Applicable Margin and Applicable Percentage        
|Schedule II          |  |  |  | Commitment Amounts                                 
|Schedule 4.5(b)      |  |  |  | Environmental Matters                              
|Schedule 4.14        |  |  |  | Subsidiaries                                       
|Schedule 7.2         |  |  |  | Existing Liens                                     
|Schedule 7.4         |  |  |  | Existing Investments                               
|Schedule 7.7         |  |  |  | Transactions with Affiliates                       
|                    
|EXHIBITS            
|                     |  |  
|Exhibit A            |  |  |  | Form of Revolving Credit Note                      
|Exhibit B            |  |  |  | Form of Swingline Note                             
|Exhibit C            |  |  |  | Form of Assignment and Acceptance                  
|Exhibit D            |  |  |  | Form of Intermediate Partnership Guaranty Agreement
|Exhibit 2.3          |  |  |  | Form of Notice of Revolving Borrowing              
|Exhibit 2.4          |  |  |  | Form of Notice of Swingline Borrowing              
|Exhibit 2.6          |  |  |  | Form of Notice of Continuation/Conversion          
|Exhibit 3.1(b)(v)    |  |  |  | Form of Secretarys Certificate                    
|Exhibit 3.1(b)(viii) |  |  |  | Form of Officers Certificate                      
|Exhibit 5.1(c)       |  |  |  | Form of Compliance Certificate                     



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AMENDED AND RESTATED

REVOLVING CREDIT AGREEMENT

THIS AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT (this
Agreement) is made and entered into as of March 30, 2007, by and among ONEOK PARTNERS, L.P., a Delaware limited partnership formerly known as Northern Border Partners, L.P. (the Borrower), the several banks and other
financial institutions and lenders from time to time party hereto (the Lenders), SUNTRUST BANK, in its capacity as administrative agent for the Lenders (the Administrative Agent), as issuing bank (the Issuing
Bank) and as swingline lender (the Swingline Lender), WACHOVIA BANK, NATIONAL ASSOCIATION, as syndication agent (the Syndication Agent) and BMO CAPITAL MARKETS, BARCLAYS BANK PLC, and CITIBANK, N.A., as Co-Documentation
Agents.

WITNESSETH:

WHEREAS, the Borrower, certain of the Lenders, certain other banks and financial institutions, and the Administrative Agent are parties to an Amended and Restated Revolving Credit Agreement dated as of March 30, 2006, as amended
by a First Amendment to Amended and Restated Revolving Credit Agreement dated as of December 13, 2006 (as so amended, the Existing Credit Agreement);

WHEREAS, the Borrower has requested that the Existing Credit Agreement be amended in the manner set forth herein;

WHEREAS, the Lenders have agreed to amend and restate the Existing Credit Agreement in order to effect such amendments to the Existing Credit Agreement, all subject to the terms, conditions, and requirements of
this Agreement;

NOW, THEREFORE, in consideration of the premises and the mutual covenants herein contained, the Borrower, the
Lenders, the Administrative Agent, the Issuing Bank and the Swingline Lender agree that the Existing Credit Agreement is amended and restated as follows:

ARTICLE I

DEFINITIONS; CONSTRUCTION

Section 1.1.Definitions. In addition to the other terms defined herein, the following terms used herein shall have the
meanings herein specified (to be equally applicable to both the singular and plural forms of the terms defined):

Acquisition shall have the meaning given to such term in the definition of Consolidated EBITDA herein.

Additional Lender shall have the meaning given to such term in Section 2.21.



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Adjusted Consolidated EBITDA shall mean, for the Borrower and its Subsidiaries for any
period, the sum of (a) Consolidated EBITDA for such period plus (b) any Material Project EBITDA Adjustments for such period.

Adjusted LIBO Rate shall mean, with respect to each Interest Period for a Eurodollar Borrowing, the rate per annum obtained by dividing (i) LIBOR for such Interest Period by (ii) a percentage equal to 1.00
minus the Eurodollar Reserve Percentage.

Administrative Agent shall have the meaning assigned to such term in
the opening paragraph hereof.

Administrative Questionnaire shall mean, with respect to each Lender, an administrative
questionnaire in the form prepared by the Administrative Agent and submitted to the Administrative Agent duly completed by such Lender.

Affiliate shall mean, as to any Person, any other Person that directly, or indirectly through one or more intermediaries, Controls, is Controlled by, or is under common Control with, such Person. For the purposes of this
definition, Control shall mean the power, directly or indirectly, to direct or cause the direction of the management and policies of a Person, whether through the ability to exercise voting power, by control or otherwise. The terms
Controlling, Controlled by, and under common Control with have the meanings correlative thereto.

Aggregate Revolving Commitment Amount shall mean the aggregate principal amount of the Aggregate Revolving Commitments from time to time. On the Restatement Date, the Aggregate Revolving Commitment Amount equals
$750,000,000.

Aggregate Revolving Commitments shall mean, collectively, all Revolving Commitments of all Lenders at any
time outstanding.

Applicable Lending Office shall mean, for each Lender and for each Type of Loan, the Lending
Office of such Lender (or an Affiliate of such Lender) designated for such Type of Loan in the Administrative Questionnaire submitted by such Lender or such other office of such Lender (or an Affiliate of such Lender) as such Lender may from
time to time specify to the Administrative Agent and the Borrower as the office by which its Loans of such Type are to be made and maintained.

Applicable Margin shall mean, as of any date, with respect to all Revolving Loans outstanding on any date or the letter of credit fee, the percentage per annum determined by reference to the applicable Debt Rating
Category from time to time in effect as set forth on Schedule I; provided, that a change in the Applicable Margin resulting from a change in the Debt Rating Category shall be effective on the day on which either rating agency changes its
rating and shall continue until the day prior to the day that a further change becomes effective. The Applicable Margin as of the Restatement Date shall be at Level III as set forth on Schedule I.

Applicable Percentage shall mean, as of any date, with respect to the facility fee and utilization fee as of any date, the percentage
per annum determined by reference to the applicable Debt Rating Category as set forth on Schedule I; provided, that a change in the



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Applicable Percentage resulting from a change in the Debt Rating Category shall be effective on the day on which either rating agency changes its rating and
shall continue until the day prior to the day that a further change becomes effective. Notwithstanding the foregoing, the Applicable Percentage for the facility fee and utilization fee as of the Restatement Date shall be at Level III as set forth on
Schedule I.

Approved Fund shall mean 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 and that is administered or managed by (i) a Lender, (ii) an Affiliate of a Lender or
(iii) an entity or an Affiliate of an entity that administers or manages a Lender.

Assignment and Acceptance shall
mean an assignment and acceptance entered into by a Lender and an assignee (with the consent of any party whose consent is required by Section 10.4(b)) and accepted by the Administrative Agent, in the form of Exhibit C attached hereto or any
other form approved by the Administrative Agent.

Availability Period shall mean the period from the Restatement Date to
the Revolving Commitment Termination Date.

Base Rate shall mean the higher of (i) the per annum rate which the
Administrative Agent publicly announces from time to time to be its prime lending rate, as in effect from time to time, and (ii) the Federal Funds Rate, as in effect from time to time, plus one-half of one percent (0.50%). The
Administrative Agents prime lending rate is a reference rate and does not necessarily represent the lowest or best rate charged to customers. The Administrative Agent may make commercial loans or other loans at rates of interest at, above or
below the Administrative Agents prime lending rate. Each change in the Administrative Agents prime lending rate shall be effective from and including the date such change is publicly announced as being effective.

Borrower shall have the meaning assigned to such term in the opening paragraph hereof.

Borrower Partnership Agreement means the Third Amended and Restated Agreement of Limited Partnership of ONEOK Partners, L.P., dated as
of September 15, 2006 as amended, supplemented, restated or otherwise modified from time to time.

Borrowing shall
mean a borrowing consisting of (i) Loans of the same Class and 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, or (ii) a Swingline Loan.

Business Day shall mean (i) any day other than a Saturday, Sunday or other day on which commercial banks in
Atlanta, Georgia and New York, New York are authorized or required by law to close and (ii) if such day relates to a Borrowing of, a payment or prepayment of principal or interest on, a conversion of or into, or an Interest Period for, a
Eurodollar Loan or a notice with respect to any of the foregoing, any day on which dealings in Dollars are carried on in the London interbank market.



3



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Capital Lease Obligations of any Person shall mean all obligations of such Person to
pay rent or other amounts under any lease (or other arrangement conveying the right to use) of real or personal property, or a combination thereof, which obligations are required to be classified and accounted for as capital leases on a balance
sheet of such Person under GAAP, and the amount of such obligations shall be the capitalized amount thereof determined in accordance with GAAP.

Capital Stock shall mean any non-redeemable capital stock (or in the case of a partnership or limited liability company, the partners or members equivalent equity interest) of the Borrower or any of its
Subsidiaries (to the extent issued to a Person other than the Borrower), whether common or preferred.

Change of Control
means an event or series of events by which:

(a) any person or group (as such terms are used in
Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, but excluding any employee benefit plan of OKE or its Subsidiaries, and any person or entity acting in its capacity as trustee, agent or other fiduciary or administrator of any such
plan) after the Restatement Date becomes the beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Securities Exchange Act of 1934, except that a person or group shall be deemed to have beneficial ownership of all
securities that such person or group has the right to acquire (such right, an option right), whether such right is exercisable immediately or only after the passage of time), directly or indirectly, of 25% or more of the equity
securities of OKE entitled to vote for members of the board of directors or equivalent governing body of such Person on a fully-diluted basis (and taking into account all such securities that such person or group has the right to acquire pursuant to
any option right);

(b) during any period of 12 consecutive months, a majority of the members of the board of directors or
other equivalent governing body of OKE cease to be composed of individuals (i) who were members of that board or equivalent governing body on the first day of such period, (ii) whose election or nomination to that board or equivalent
governing body was approved by individuals referred to in clause (i) above constituting at the time of such election or nomination at least a majority of that board or equivalent governing body or (iii) whose election or nomination to that
board or other equivalent governing body was approved by individuals referred to in clauses (i) and (ii) above constituting at the time of such election or nomination at least a majority of that board or equivalent governing body
(excluding, in the case of both clause (ii) and clause (iii), any individual whose initial nomination for, or assumption of office as, a member of that board or equivalent governing body occurs as a result of an actual or threatened
solicitation of proxies or consents for the election or removal of one or more directors by any person or group other than a solicitation for the election of one or more directors by or on behalf of the board of directors); or

(c) OKE shall fail to have the power to control, directly or indirectly, the management and policies of each of the Borrower and the
Intermediate Partnership; provided that, in the event of any Disposition of general partner interests in either of the Borrower or the Intermediate Partnership by OKE, with respect to the Borrower, or by



4



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the Borrower, with respect to the Intermediate Partnership, at a time when the aggregate general partner interests in the Borrower or the Intermediate
Partnership owned by OKE or the Borrower, respectively, directly or indirectly through any of their wholly owned Subsidiaries, together with the aggregate voting rights of OKE or the Borrower, respectively, with respect thereto, is less than (or
which Disposition would result in such ownership being less than) fifty percent (50%) of the aggregate outstanding general partner interests and voting rights of all general partners of either of the Borrower or the Intermediate Partnership
(each a GP Disposition), such GP Disposition shall not be deemed to be a Change of Control so long as the Borrower provides prior written notice thereof to the Administrative Agent and the Lenders, together with such other
information as may be reasonably necessary to demonstrate to the reasonable satisfaction of the Required Lenders that OKE will retain control of each of the Borrower and the Intermediate Partnership after giving effect to such GP Disposition, unless
the GP Disposition is objected to in writing by the Required Lenders, or by the Administrative Agent acting at the direction of the Required Lenders, within 15 days of receipt of such notice.

Change in Law shall mean (i) the adoption of any applicable law, rule or regulation after the Original Closing Date,
(ii) any change in any applicable law, rule or regulation, or any change in the interpretation or application thereof, by any Governmental Authority after the Original Closing Date, or (iii) compliance by any Lender (or its Applicable
Lending Office) or the Issuing Bank (or for purposes of Section 2.16(b), by such Lenders or the Issuing Banks parent corporation, if applicable) with any request, guideline or directive (whether or not having the force of
law) of any Governmental Authority made or issued after the Original Closing Date.

Class, when used in reference to any
Loan or Borrowing, refers to whether such Loan, or the Loans comprising such Borrowing, are Revolving Loans or Swingline Loans and when used in reference to any Commitment, refers to whether such Commitment is a Revolving Commitment or a Swingline
Commitment.

Code shall mean the Internal Revenue Code of 1986, as amended and in effect from time to time.

Commitment shall mean a Revolving Commitment or a Swingline Commitment or any combination thereof (as the context shall permit or
require).

Common Unit means units representing limited partnership interests in the Borrower offered for sale to the
public.

Compliance Certificate shall mean a certificate from the principal executive officer, the principal financial
officer or the treasurer of the Borrower in the form of, and containing the certifications set forth in, the certificate attached hereto as Exhibit 5.1(c).

Consolidated EBITDA shall mean, for the Borrower and its Subsidiaries for any period, an amount equal to the sum of (i) Consolidated Net Income for such period plus (ii) to the extent
deducted in determining Consolidated Net Income for such period, (A) Consolidated



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Interest Expense, (B) income tax expense determined on a consolidated basis in accordance with GAAP, (C) depreciation and amortization determined
on a consolidated basis in accordance with GAAP, and (D) all other non-cash charges, determined in each case on a consolidated basis in accordance with GAAP for such period. For purposes of Section 6.1, if the Borrower or any Subsidiary
has acquired another Person as a Subsidiary (including through the purchase or other acquisition of additional ownership interests in such Person resulting in such Person becoming a Subsidiary), or all or substantially all of the assets of another
Person or a division, line of business, or other business unit of another Person (in any such case, an Acquisition), or has Disposed of a Subsidiary (including through the sale or other disposition of ownership interests in a
Subsidiary resulting in its ceasing to be a Subsidiary) or all or substantially all of the assets of a Subsidiary or a division, line of business, or other business unit or, in the case of the NBPC Sale, the sale of the partnership interests of
Pipeline to TCPILP, in any case as permitted by this Agreement, during the relevant period for determining the Leverage Ratio, Consolidated EBITDA shall be calculated in such ratios after giving pro forma effect thereto (such pro forma basis to have
been reasonably diligenced by the Borrower), as if such Acquisition or Disposition (and in each case any related incurrence, assumption or repayment of Indebtedness) had occurred on the first day of the relevant period for determining Consolidated
EBITDA.

Consolidated Interest Expense shall mean, for the Borrower and its Subsidiaries for any period determined on a
consolidated basis in accordance with GAAP, the sum of (i) total interest expense, including without limitation, the interest component of any payments in respect of Capital Lease Obligations capitalized or expensed during such period (whether
or not actually paid during such period) plus (ii) the net amount payable (or minus the net amount receivable) under any Hedging Transaction (relating to interest rates only) during such period (whether or not actually paid or
received during such period).

Consolidated Net Income shall mean, for the Borrower and its Subsidiaries for any period,
the net income (or loss) of the Borrower and its Subsidiaries for such period determined on a consolidated basis in accordance with GAAP; provided that there shall be excluded therefrom (a) the income or loss of any Person accrued prior
to the date it became a Subsidiary of the Borrower, or is merged or consolidated with the Borrower or any of its Subsidiaries, or such Persons assets were acquired by the Borrower or any of its Subsidiaries, (b) any equity interests of
the Borrower or any Subsidiary in the earnings of any Person (other than a Subsidiary of the Borrower), but including dividends and similar distributions actually received by the Borrower or its Subsidiaries from any such Person, (c) the
undistributed earnings of any Subsidiary of the Borrower to the extent that the declaration or payment of dividends or similar distributions by such Subsidiary is not at the time permitted by the terms of the organizational documents or Contractual
Obligations of, or Requirements of Law applicable to, such Subsidiary, (d) any extraordinary gains or losses, and (e) any gains attributable to write-ups of assets.

Consolidated Total Capitalization shall mean, without duplication, the sum of (a) all of the shareholders equity or net
worth of the Borrower and its Subsidiaries on a consolidated basis, as determined in accordance with GAAP plus (b) Consolidated Total Debt.



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Consolidated Total Debt shall mean, as of any date, all Indebtedness of the Borrower
and its Subsidiaries measured on a consolidated basis as of such date, but excluding Indebtedness of the type described in subsection (xi) of the definition thereto.

Contractual Obligation of any Person shall mean any provision of any security issued by such Person or of any agreement, instrument or undertaking under which such Person is obligated or by which it
or any of the property in which it has an interest is bound.

Debt Rating shall mean the credit rating assigned by
S&P or Moodys, as the case may be, to the senior, unsecured long-term debt securities of the Borrower without third-party credit enhancement, whether or not any such debt securities are actually outstanding; any rating assigned to any
other debt security of the Borrower shall be disregarded. The Debt Rating in effect on any date is that in effect at the close of business on such date.

Default shall mean any condition or event that, with the giving of notice or the lapse of time or both, would constitute an Event of Default.

Default Interest shall have the meaning set forth in Section 2.11(c).

Dispose or Disposition shall mean the sale, transfer, license, lease or other disposition (including any sale and
leaseback transaction) of any property by any Person, including any sale, assignment, transfer or other disposal, with or without recourse, of any notes or accounts receivable or any rights and claims associated therewith.

Dollar(s) and the sign $ shall mean lawful money of the United States of America.

Eligible Assignee shall mean (i) a Lender; (ii) an Affiliate of a Lender; (iii) an Approved Fund; and (iv) any
other Person (other than a natural Person) approved by the Administrative Agent, the Issuing Bank, and unless an Event of Default has occurred and is continuing, the Borrower (each such approval not to be unreasonably withheld or delayed). If the
consent of the Borrower to an assignment or to an Eligible Assignee is required hereunder (including a consent to an assignment which does not meet the minimum assignment thresholds specified in paragraph (b) of Section 10.4), the
Borrower shall be deemed to have given its consent five Business Days after the date notice thereof has actually been delivered by the assigning Lender (through the Administrative Agent) to the Borrower, unless such consent is expressly refused by
the Borrower prior to such fifth Business Day.

Environmental Laws shall mean all laws, rules, regulations, codes,
ordinances, orders, decrees, judgments, injunctions, notices or binding agreements issued, promulgated or entered into by or with any Governmental Authority, relating in any way to the environment, preservation or reclamation of natural resources,
the management, Release or threatened Release of any Hazardous Material or to health and safety matters.

Environmental
Liability shall mean any liability, contingent or otherwise (including any liability for damages, costs of environmental investigation and remediation, costs



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of administrative oversight, fines, natural resource damages, penalties or indemnities), of the Borrower or any Subsidiary directly or indirectly resulting
from or based upon (i) any actual or alleged violation of any Environmental Law, (ii) the generation, use, handling, transportation, storage, treatment or disposal of any Hazardous Materials, (iii) any actual or alleged exposure to
any Hazardous Materials, (iv) the Release or threatened Release of any Hazardous Materials or (v) any contract, agreement or other consensual arrangement pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

ERISA shall mean the Employee Retirement Income Security Act of 1974, as amended from time to time, and any
successor statute.

ERISA Affiliate shall mean each person (as defined in Section 3(a) of ERISA)
(whether or not incorporated) which is, or has been within the past five years, a member of any Loan Partys controlled group (within the meaning of PBGC regulation §4001.2).

ERISA Event shall mean (i) any reportable event, as defined in Section 4043 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); (ii) 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; (iii) 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;
(iv) the incurrence by the Borrower or any of its ERISA Affiliates of any liability under Title IV of ERISA with respect to the termination of any Plan; (v) the receipt by the Borrower or any ERISA Affiliate from the PBGC or a plan
administrator appointed by the PBGC of any notice relating to an intention to terminate any Plan or Plans or to appoint a trustee to administer any Plan; (vi) the incurrence by the Borrower or any of its ERISA Affiliates of any liability with
respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan; or (vii) the receipt by the Borrower or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan from the Borrower 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.

Eurodollar when used in reference to any Loan or Borrowing, refers to whether such Loan, or the Loans comprising such Borrowing, bears
interest at a rate determined by reference to the Adjusted LIBO Rate.

Eurodollar Reserve Percentage shall mean the
aggregate of the maximum reserve percentages (including, without limitation, any emergency, supplemental, special or other marginal reserves) expressed as a decimal (rounded upwards to the next 1/100th of 1%) in effect on any day to which the
Administrative Agent is subject with respect to the Adjusted LIBO Rate pursuant to regulations issued by the Board of Governors of the Federal Reserve System (or any Governmental Authority succeeding to any of its principal functions) with respect
to eurocurrency funding (currently referred to as eurocurrency liabilities under Regulation D). Eurodollar Loans shall be deemed to constitute eurocurrency funding and to be subject to such reserve requirements without benefit of or
credit for proration, exemptions or offsets that may be available from time to time to any Lender under Regulation D. The Eurodollar Reserve



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Percentage shall be adjusted automatically on and as of the effective date of any change in any reserve percentage.

Event of Default shall have the meaning provided in Article VIII.

Excluded Taxes shall mean with respect to the Administrative Agent, any Lender, the Issuing Bank or any other recipient of any payment
to be made by or on account of any obligation of the Borrower hereunder, (a) income or franchise taxes imposed on (or measured by) its net income by the United States of America, or by the jurisdiction under the laws of which such recipient is
organized or in which its principal office is located or, in the case of any Lender, in which its applicable lending office is located, (b) any branch profits taxes imposed by the United States of America or any similar tax imposed by any other
jurisdiction in which any Lender is located and (c) in the case of a Foreign Lender, any withholding tax that (i) is imposed on amounts payable to such Foreign Lender at the time such Foreign Lender becomes a party to this Agreement,
(ii) is imposed on amounts payable to such Foreign Lender at any time that such Foreign Lender designates a new lending office, other than taxes that have accrued prior to the designation of such lending office that are otherwise not Excluded
Taxes, and (iii) is attributable to such Foreign Lenders failure to comply with Section 2.18(e).

Existing
Credit Agreement shall have the meaning provided in the recitals.

Existing Lenders shall mean the lenders
party to the Existing Credit Agreement as of the date hereof.

Federal Funds Rate shall mean, for any day, the rate per
annum (rounded upwards, if necessary, to the next 1/100th of 1%) equal to the weighted average of the rates on overnight Federal funds transactions with member banks of the Federal Reserve System arranged by Federal funds brokers, as published by
the Federal Reserve Bank of New York on the next succeeding Business Day or if such rate is not so published for any Business Day, the Federal Funds Rate for such day shall be the average rounded upwards, if necessary, to the next 1/100th of 1% of
the quotations for such day on such transactions received by the Administrative Agent from three Federal funds brokers of recognized standing selected by the Administrative Agent.

Fee Letter shall mean that certain fee letter, dated as of March 19, 2007, executed by SunTrust Capital Markets, Inc. and
SunTrust Bank, and that certain fee letter dated as of March 19, 2007, executed by Wachovia Capital Markets, LLC and Wachovia Bank, National Association, in each case as accepted by the Borrower.

Fiscal Quarter shall mean any fiscal quarter of the Borrower. Fiscal Year shall mean any fiscal year of the Borrower.

Foreign Lender shall mean any Lender that is not a United States person under Section 7701(a)(3) of the Code.

Foreign Subsidiary shall mean any Subsidiary that is organized under the laws of a jurisdiction other than one of the
fifty states of the United States or the District of Columbia.



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Fort Union, L.L.C. means Fort Union Gas Gathering, L.L.C., a Delaware limited
liability company.

Fort Union Project Finance Documents means the Construction and Term Credit Agreement dated as of
April 16, 1999 among Fort Union, L.L.C., as Borrower, Fleet National Bank, as administrative agent and the other lenders and agents parties thereto, and the other agreements executed as security therefor or pursuant thereto, as the same may
from time to time be amended, together with all loan, finance, security and related documents and agreements executed and delivered in connection with the financing of the planned expansion of the Ft. Union, L.L.C. pipeline scheduled to be completed
in 2007.

GAAP shall mean generally accepted accounting principles in the United States applied on a consistent basis
and subject to the terms of Section 1.3.

Governmental Authority shall mean the government of the United
States of America, any other nation or 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.

Guarantee of or by any Person (the
guarantor) shall mean any obligation, contingent or otherwise, of the guarantor guaranteeing or having the economic effect of guaranteeing any Indebtedness or other obligation of any other Person (the primary
obligor) in any manner, whether directly or indirectly and including any obligation, direct or indirect, of the guarantor (i) to purchase or pay (or advance or supply funds for the purchase or payment of) such Indebtedness or other
obligation or to purchase (or to advance or supply funds for the purchase of) any security for the payment thereof, (ii) to purchase or lease property, securities or services for the purpose of assuring the owner of such Indebtedness or other
obligation of the payment thereof, (iii) to maintain working capital, equity capital or any other financial statement condition or liquidity of the primary obligor so as to enable the primary obligor to pay such Indebtedness or other obligation
or (iv) as an account party in respect of any letter of credit or letter of guaranty issued in support of such Indebtedness or obligation; provided, that the term Guarantee shall not include endorsements for collection or deposits
in the ordinary course of business. The amount of any Guarantee shall be deemed to be an amount equal to the stated or determinable amount of the primary obligation in respect of which Guarantee is made or, if not so stated or determinable, the
maximum reasonably anticipated liability in respect thereof (assuming such Person is required to perform thereunder) as determined by such Person in good faith. The term Guarantee used as a verb has a corresponding meaning.

Guarantor shall mean the Intermediate Partnership.

Guaranty Agreement shall mean the Amended and Restated Guaranty Agreement, dated as of the date hereof and substantially in the form of Exhibit D, made by the Guarantor in favor of the
Administrative Agent for the benefit of the Lenders.

Hazardous Materials shall mean all explosive or radioactive
substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or



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any fraction or by-product thereof, asbestos or asbestos containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all
other substances or wastes of any nature regulated pursuant to any Environmental Law.

Hedging Obligations of any Person
shall mean any and all obligations of such Person, whether absolute or contingent and howsoever and whensoever created, arising, evidenced or acquired under (i) any and all Hedging Transactions, (ii) any and all cancellations, buy backs,
reversals, terminations or assignments of any Hedging Transactions and (iii) any and all renewals, extensions and modifications of any Hedging Transactions and any and all substitutions for any Hedging Transactions.

Hedging Transaction of any Person shall mean any transaction (including an agreement with respect thereto) now existing or hereafter
entered into by such Person that is a rate swap, basis swap, forward rate transaction, commodity swap, interest rate option, foreign exchange transaction, cap transaction, floor transaction, collateral transaction, forward transaction, currency swap
transaction, cross-currency rate swap transaction, currency option or any other similar transaction (including any option with respect to any of these transactions) or any combination thereof, whether linked to one or more interest rates, foreign
currencies, commodity prices, equity prices or other financial measures.

Hybrid Securities means any trust preferred
securities, or deferrable interest subordinated debt with a maturity 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 (i) 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 the Borrower or any of its Subsidiaries, (ii) that have been formed for the purpose of issuing such trust preferred securities or deferrable interest subordinated debt and (iii) substantially all the assets of which consist of
(A) subordinated debt of the Borrower or a Subsidiary of the Borrower and (B) 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 shall mean, without duplication (i) all obligations of such Person for
borrowed money, (ii) all obligations of such Person evidenced by bonds,



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debentures, notes or other similar instruments, (iii) all obligations of such Person in respect of the deferred purchase price of property or services
(other than trade payables incurred in the ordinary course of business on terms customary in the trade), (iv) all obligations of such Person under any conditional sale or other title retention agreement(s) relating to property acquired by such
Person, (v) all Capital Lease Obligations of such Person, (vi) all obligations, contingent or otherwise, of such Person in respect of letters of credit, acceptances or similar extensions of credit, (vii) all Guarantees of such Person
of the type of Indebtedness described in clauses (i) through (vi) above, (viii) all Indebtedness of a third party secured by any Lien granted by such Person on property owned by such Person, whether or not such Indebtedness has been
assumed by such Person, (ix) [reserved], (x) Off-Balance Sheet Liabilities and (xi) all Hedging Obligations. The Indebtedness of any Person shall include the Indebtedness of any partnership or joint venture in which such Person is a
general partner or a joint venturer, except to the extent that the terms of such Indebtedness provide that such Person is not liable therefor. Notwithstanding the foregoing, Indebtedness shall not include indebtedness (which is not assumed or
guaranteed by Borrower or any Subsidiary of Borrower) arising under the Fort Union Project Finance Documents which is secured by Liens on the limited liability company interests of Crestone Powder River, L.L.C. in Fort Union, L.L.C., nor
indebtedness (which is not assumed or guaranteed by Borrower or any Subsidiary of Borrower) which is secured by Liens on the limited liability company interests of Crestone Wind River, L.L.C. in Lost Creek, L.L.C.

Indemnified Taxes shall mean Taxes other than Excluded Taxes.

Information Memorandum shall mean the Confidential Executive Summary dated March 2007 relating to the Borrower and the transactions
contemplated by this Agreement and the other Loan Documents.

Interest Period shall mean with respect to (i) any
Swingline Borrowing, such period as the Swingline Lender and the Borrower shall mutually agree and (ii) any Eurodollar Borrowing, a period of one, two, three or six months; provided, that:

(i) the initial Interest Period for such Borrowing shall commence on the date of such Borrowing (including the date of any conversion from
a Borrowing of another Type), and each Interest Period occurring thereafter in respect of such Borrowing shall commence on the day on which the next preceding Interest Period expires;

(ii) if any Interest Period would otherwise end on a day other than a Business Day, such Interest Period shall be extended to the next
succeeding Business Day, unless such Business Day falls in another calendar month, in which case such Interest Period would end on the next preceding Business Day;

(iii) any Interest Period which begins on the last Business Day of a calendar month or on a day for which there is no numerically
corresponding day in the calendar month at the end of such Interest Period shall end on the last Business Day of such calendar month; and

(iv) no Interest Period may extend beyond the Revolving Commitment Termination Date.



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Intermediate Partnership shall mean ONEOK Partners Intermediate Limited Partnership, a
Delaware limited partnership.

Intermediate Partnership Agreement shall mean that certain Amended and Restated Agreement
of Limited Partnership of Intermediate Partnership dated as of October 1, 1993, as amended, supplemented, restated or otherwise modified from time to time.

Issuing Bank shall mean SunTrust Bank or any other Lender, each in its capacity as an issuer of Letters of Credit pursuant to Section 2.20.

LC Commitment shall mean that portion of the Aggregate Revolving Commitment Amount that may be used by the Borrower for the issuance
of Letters of Credit in an aggregate face amount not to exceed $100,000,000.

LC Disbursement shall mean a payment made
by the Issuing Bank pursuant to a Letter of Credit.

LC Documents shall mean the Letters of Credit and all applications,
agreements and instruments relating to the Letters of Credit.

LC Exposure shall mean, at any time, the sum of
(i) the aggregate undrawn amount of all outstanding Letters of Credit at such time, plus (ii) the aggregate amount of all LC Disbursements that have not been reimbursed by or on behalf of the Borrower at such time. The LC Exposure
of any Lender shall be its Pro Rata Share of the total LC Exposure at such time.

Lenders shall have the meaning
assigned to such term in the opening paragraph of this Agreement and shall include, where appropriate, the Swingline Lender and each Additional Lender that joins this Agreement pursuant to Section 2.21

Letter of Credit shall mean any stand-by letter of credit issued pursuant to Section 2.20 by the Issuing Bank for the
account of the Borrower pursuant to the LC Commitment.

Leverage Ratio shall mean, as of any date, the ratio of
(i) Consolidated Total Debt as of such date (excluding any amount of Hybrid Securities not to exceed a total of 15% of Consolidated Total Capitalization) to (ii) Adjusted Consolidated EBITDA for the four consecutive Fiscal Quarters ending
on or immediately prior to such date.

LIBOR shall mean, for any applicable Interest Period with respect to any
Eurodollar Loan, the British Bankers Association Interest Settlement Rate per annum for deposits in Dollars for a period equal to such Interest Period appearing on the display designated as Page 3750 on the Dow Jones Markets Service (or such
other page on that service or such other service designated by the British Bankers Association for the display of such Associations Interest Settlement Rates for Dollar deposits) as of 11:00 a.m. (London, England time) on the day that is
two Business Days prior to the first day of the Interest Period or if such Page 3750 is unavailable for any reason at such time, the rate which appears on the Reuters Screen ISDA Page as of such date and such time; provided, that if the
Administrative Agent determines that the relevant foregoing sources are unavailable for the relevant Interest Period, LIBOR shall mean the



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rate of interest determined by the Administrative Agent to be the average (rounded upward, if necessary, to the nearest 1/100th of 1%) of the rates per annum
at which deposits in Dollars are offered to the Administrative Agent two (2) Business Days preceding the first day of such Interest Period by leading banks in the London interbank market as of 10:00 a.m. (New York time) for delivery on the
first day of such Interest Period, for the number of days comprised therein and in an amount comparable to the amount of the Eurodollar Loan of the Administrative Agent.

Lien shall mean (i) any mortgage, deed of trust, deed to secure debt, pledge, security interest, lien (statutory or otherwise), charge, claim, easement or encumbrance, hypothecation,
assignment, deposit arrangement, or (ii) any preference, priority or other security agreement or preferential arrangement of any kind or nature whatsoever (including any conditional sale or other title retention agreement and any capital lease
having the same economic effect as any of the foregoing).

Limited Partnership Units means Common Units and any other
units representing a limited partners interest in the Borrower.

Loan Documents shall mean, collectively, this
Agreement, the Notes (if any), the LC Documents, the Guaranty Agreement, all Notices of Borrowing, all Notices of Conversion/Continuation, all Compliance Certificates and any and all other instruments, agreements, documents and writings executed in
connection with any of the foregoing.

Loan Parties shall mean the Borrower and the Guarantor.

Loans shall mean all Revolving Loans and Swingline Loans in the aggregate or any of them, as the context shall require.

Lost Creek L.L.C. means Lost Creek Gathering Company, L.L.C., a Delaware limited liability company.

Lost Creek Project Finance Documents means the Construction and Term Credit Agreement dated as of September 24, 1999 among Lost
Creek, L.L.C. as Borrower, Barclays Bank PLC, as administrative agent and the other lenders party thereto and the other agreements executed as security therefor or pursuant thereto, as the same may from time to time be amended.

Material Adverse Effect shall mean (a) a material adverse change in, or a material adverse effect upon, the financial condition
of the Borrower and its Subsidiaries taken as a whole; provided however, (i) a downgrade by S&P and/or Moodys of Borrowers Debt Rating shall not, in and of itself, be deemed to be a Material Adverse Effect, and (ii) the
fact that the Borrower 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 Debt Rating or that causes such inability of the Borrower 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 Debt



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Rating or by such inability to borrow, will be considered in determining whether there has been a Material Adverse Effect; (b) a material impairment of
the ability of the Borrower to perform its obligations under any Loan Document to which it is a party; or (c) a material adverse effect upon the legality, validity, binding effect or enforceability against the Borrower of any Loan Document to
which it is a party.

Material Indebtedness shall mean Indebtedness (other than the Loans and Letters of Credit) and
Hedging Obligations of the Borrower or any of its Subsidiaries, individually or in an aggregate principal amount, exceeding $100,000,000. For purposes of determining the amount of attributed Indebtedness from Hedging Obligations, the principal
amount of any Hedging Obligations at any time shall be the Net Mark-to-Market Exposure of such Hedging Obligations.

Material Project shall mean each new pipeline, storage facility, processing plant or other capital expansion project wholly owned by the Borrower or its Subsidiaries, the construction of which commenced after
March 30, 2006 and which has a budgeted capital cost exceeding $25,000,000.

Material Project EBITDA Adjustments
shall mean, with respect to each Material Project, (A) prior to completion of the Material Project, a percentage (based on the then-current completion percentage of the Material Project) of an amount to be approved by the Administrative Agent
as the projected Consolidated EBITDA attributable to such Material Project (such amount to be determined based on contracts relating to such Material Project, the creditworthiness of the other parties to such contracts and projected revenues from
such contracts, capital costs and expenses, scheduled completion, and other factors deemed appropriate by the Administrative Agent) which may, at the Borrowers option, be added to actual Consolidated EBITDA for the Borrower and its
Subsidiaries for the fiscal quarter in which construction of such Material Project commences and for each fiscal quarter thereafter until completion of the Material Project (net of any actual Consolidated EBITDA attributable to such Material Project
following its completion), provided that if construction of the Material Project is not completed by the scheduled completion date, then the foregoing amount shall be reduced by the following percentage amounts depending on the period of delay for
completion (based on the period of actual delay or then-estimated delay, whichever is longer): (i) longer than 90 days, but not more than 180 days, 25%, (ii) longer than 180 days but not more than 270 days, 50%, and (iii) longer than
270 days, 100%; and (B) beginning with the first full fiscal quarter following completion of the Material Project and for the two immediately succeeding fiscal quarters, an amount to be approved by the Administrative Agent as the projected
Consolidated EBITDA attributable to the Material Project (determined in the same manner set forth in clause (A) above) for the balance of the four full fiscal quarter period following completion shall be added to the actual Consolidated EBITDA
attributable to the Material Project for such fiscal quarter or quarters, for determining Consolidated EBITDA for the fiscal quarter then ending and the immediately preceding three fiscal quarters. Notwithstanding the foregoing, (i) no such
additions shall be allowed with respect to any Material Project unless not later than 45 days prior to commencement of construction thereof, the Borrower shall have delivered to the Administrative Agent written pro forma projections of Consolidated
EBITDA attributable to such Material Project and 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 the
Borrower and its Subsidiaries for such period (which total actual Consolidated EBITDA shall be determined without including any Material Project EBITDA Adjustments or any adjustments in respect of any Acquisitions or Dispositions as provided in the
definition of Consolidated EBITDA).

Maturity Date means the later of (a) March 30, 2012 and (b) if
maturity is extended pursuant to Section 2.23 , such extended maturity date as determined pursuant to such Section; provided , however , that, in each case, if such date is not a Business Day, the Maturity Date shall be the immediately
preceding Business Day.

Moodys shall mean Moodys Investors Service, Inc.

Multiemployer Plan shall have the meaning set forth in Section 4001(a)(3) of ERISA.

NBPC Sale shall mean the sale by the Guarantor to TCPILP of 20% of the partnership interests of Pipeline for a cash purchase price of
approximately $300,000,000 (subject to adjustment as provided in Section 3.2 of the Partnership Interest Purchase and Sale Agreement referenced in the definition of NBPC Sale Documents) pursuant to the NBPC Sale Documents, the proceeds of which
sale are to be used by the Borrower to fund a portion of the consideration for the OKE Acquisition and related transaction costs and fees.

NBPC Sale Documents shall mean, collectively, the Partnership Interest Purchase and Sale Agreement between the Intermediate Partnership and TCPILP dated as of December 31, 2005, and the other Transaction
Documents as defined therein, in each case with all exhibits, schedules and supplements thereto.

Net Mark-to-Market
Exposure of any Person shall mean, as of any date of determination with respect to any Hedging Obligation, the excess (if any) of all unrealized losses over all unrealized profits of such Person arising from such Hedging Obligation.
Unrealized losses shall mean the fair market value of the cost to such Person of replacing the Hedging Transaction giving rise to such Hedging Obligation as of the date of determination (assuming the Hedging Transaction were to be
terminated as of that date), and unrealized profits means the fair market value of the gain to such Person of replacing such Hedging Transaction as of the date of determination (assuming such Hedging Transaction were to be terminated as
of that date).

Notes shall mean, collectively, the Revolving Credit Notes and the Swingline Note.

Notices of Borrowing shall mean, collectively, the Notices of Revolving Borrowing and the Notices of Swingline Borrowing.

Notice of Conversion/Continuation shall mean the notice given by the Borrower to the Administrative Agent in respect of the
conversion or continuation of an outstanding Borrowing as provided in Section 2.6(b).



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Notice of Revolving Borrowing shall have the meaning as set forth in
Section 2.3.

Notice of Swingline Borrowing shall have the meaning as set forth in Section 2.4.

Obligations shall mean all amounts owing by the Borrower to the Administrative Agent, the Issuing Bank or any Lender
(including the Swingline Lender) pursuant to or in connection with this Agreement or any other Loan Document, including without limitation, all principal, interest (including any interest accruing after the filing of any petition in bankruptcy or
the commencement of any insolvency, reorganization or like proceeding relating to the Borrower, whether or not a claim for post-filing or post-petition interest is allowed in such proceeding), all reimbursement obligations, fees, expenses,
indemnification and reimbursement payments, costs and expenses (including all fees and expenses of counsel to the Administrative Agent, the Issuing Bank and any Lender (including the Swingline Lender) incurred pursuant to this Agreement or any other
Loan Document), whether direct or indirect, absolute or contingent, liquidated or unliquidated, now existing or hereafter arising hereunder or thereunder, and all Hedging Obligations owed to the Administrative Agent, any Lender or any of their
Affiliates incurred in order to limit interest rate or fee fluctuation with respect to the Loans and Letters of Credit, and all obligations and liabilities incurred in connection with collecting and enforcing the foregoing, together with all
renewals, extensions, modifications or refinancings thereof.

Off-Balance Sheet Liabilities of any Person shall mean
(i) any repurchase obligation or liability of such Person with respect to accounts or notes receivable sold by such Person, (ii) any liability of such Person under any sale and leaseback transactions that do not create a liability on the
balance sheet of such Person, (iii) any Synthetic Lease Obligation or (iv) any obligation arising with respect to any other transaction which is the functional equivalent of or takes the place of borrowing but which does not constitute a
liability on the balance sheet of such Person.

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, contracts and other agreements which relate to any of the Hydrocarbon Interests or the production, sale, purchase, exchange or processing of Hydrocarbons from or



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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 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 hereafter 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.

OKE shall mean
ONEOK, Inc., an Oklahoma corporation.

OKE Acquisition shall mean the acquisition by the Borrower from OKE of its
gathering and processing, pipelines and storage, and natural gas liquids businesses for consideration in an aggregate amount of (i) $1,350,000,000 in cash (subject to adjustments as provided in Section 1.4 of the Purchase and Sale
Agreement referenced in the definition of OKE Acquisition Documents), and (ii) 36,494,126 Class B limited partnership units of the Borrower, pursuant to the OKE Acquisition Documents.

OKE Acquisition Documents shall mean, collectively, the Contribution Agreement among OKE, the Borrower, and the Intermediate
Partnership dated as of February 14, 2006, together with the Services Agreement as defined therein, and the Purchase and Sale Agreement between OKE and the Borrower dated as of February 14, 2006, together with the
Services Agreement as defined therein, in each case with all exhibits, schedules and supplements thereto.

Original
Closing Date shall mean May 16, 2005.

OSHA shall mean the Occupational Safety and Health Act of 1970, as
amended from time to time, and any successor statute.

Other Taxes shall mean any and all present or future stamp or
documentary taxes or any other excise or property taxes, charges or similar levies arising from any payment made hereunder or from the execution, delivery or enforcement of, or otherwise with respect to, this Agreement or any other Loan Document.

Participant shall have the meaning set forth in Section 10.4(d).

Payment Office shall mean the office of the Administrative Agent located at 303 Peachtree Street, N.E., Atlanta, Georgia 30308, or
such other location as to which the Administrative Agent shall have given written notice to the Borrower and the other Lenders.



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PBGC shall mean the Pension Benefit Guaranty Corporation referred to and defined in
ERISA, and any successor entity performing similar functions.

Permitted Encumbrances shall mean:

(i) Liens imposed by law for taxes, assessments or other governmental charges or levies not yet due or which are being contested in good
faith by appropriate proceedings and with respect to which adequate reserves are being maintained in accordance with GAAP;

(ii) Liens of landlords, carriers, operators, warehousemen, mechanics, and materialmen, statutory Liens of producers of hydrocarbons, and similar Liens arising by operation of law, in each case incurred in the ordinary course of business
for amounts not yet due or which are being contested in good faith by appropriate proceedings and with respect to which adequate reserves are being maintained to the extent such amounts exceed $500,000;

(iii) pledges and deposits made in the ordinary course of business in compliance with workers compensation, unemployment insurance,
other social security laws or regulations or other forms of governmental insurance or benefits, other than any Lien imposed by ERISA;

(iv) deposits to secure the performance of tenders, bids, contracts (other than for borrowed money), leases, statutory obligations, surety bonds (other than bonds related to judgments or litigation), performance bonds
and other obligations of a like nature, in each case entered into in the ordinary course of business or to secure obligations on surety bonds;

(v) judgment and attachment liens not giving rise to an Event of Default or Liens created by or existing from any litigation or legal proceeding that are currently being contested in good faith by appropriate
proceedings and with respect to which adequate reserves are being maintained in accordance with GAAP;

(vi) title defects,
easements, zoning restrictions, rights-of-way, land use and environmental regulations, and similar encumbrances affecting real property imposed by law or arising in the ordinary course of business that do not secure any monetary obligations and do
not materially detract from the value of the affected property or materially interfere with the ordinary conduct of business of the Borrower and its Subsidiaries taken as a whole;

(vii) Liens securing obligations of others, neither assumed nor guaranteed by any Loan Party nor on which it customarily pays interest,
existing upon real estate or rights in or relating to real estate acquired by such Person for substation, metering station, compression station, gathering line, transmission line, transportation line, distribution line or right of way purposes, and
any Liens reserved in leases for rent and for compliance with the terms of the leases in the case of leasehold estates, to the extent that any such Lien referred to in this clause (vii) does not materially impair the use of the property;



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(viii) Liens granted pursuant to any Loan Document;

(ix) easements or reservations in any property of the Borrower or a Subsidiary for the purpose of roads, pipe lines, gas transmission and
distribution lines, electric light and power transmission and distribution lines, water mains and other like purposes, and zoning ordinances, regulations and restrictions which do not impair the use of such property in the operation of the business
of the Borrower or a Subsidiary;

(x) any Liens on any property or asset of the Borrower or any Subsidiary existing on the
Restatement Date set forth on Schedule 7.2; provided, that such Lien shall not apply to any other property or asset of the Borrower or any Subsidiary;

(xi) Liens upon or in any fixed or capital assets to secure the purchase price or the cost of construction or improvement of such fixed or
capital assets or to secure Indebtedness incurred solely for the purpose of financing the acquisition, construction or improvement of such fixed or capital assets (including Liens securing any Capital Lease Obligations and Synthetic Lease
Obligations); provided, that (i) such Lien secures Indebtedness permitted by Section 7.1, (ii) such Lien attaches to such asset concurrently or within 180 days after the acquisition, improvement or completion of the
construction thereof; (iii) such Lien does not extend to any other asset; and (iv) the Indebtedness secured thereby does not exceed the cost of acquiring, constructing or improving such fixed or capital assets;

(xii) any Lien (i) existing on any asset of any Person at the time such Person becomes a Subsidiary of the Borrower,
(ii) existing on any asset of any Person at the time such Person is merged with or into the Borrower or any Subsidiary of the Borrower or (iii) existing on any asset prior to the acquisition thereof by the Borrower or any Subsidiary of the
Borrower; provided, that any such Lien was not created in the contemplation of any of the foregoing and any such Lien secures only those obligations which it secures on the date that such Person becomes a Subsidiary or the date of such merger or the
date of such acquisition;

(xiii) Liens on the limited liability company interests in Fort Union, L.L.C. which are owned by
Crestone Powder River L.L.C., a Delaware limited liability company, which Liens secure amounts owed under the Fort Union Project Finance Documents;

(xiv) Liens on the limited liability company interests in Lost Creek, L.L.C. which are owned by Crestone Wind River, L.L.C., a Delaware limited liability company, which Liens secure amounts owed under the Lost Creek
Project Finance Documents;

(xv) extensions, renewals, or replacements of any Lien referred to in paragraphs
(x) through (xiv) above; provided, that the principal amount of the Indebtedness secured thereby is not increased and that any such extension, renewal or replacement is limited to the assets originally encumbered thereby;



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(xvi) any Liens (i) in favor of the Administrative Agent arising under
Section 2.20(g), (ii) at any time that Pipeline is a Subsidiary of the Borrower, in favor of the administrative agent under section 2.20(g) of the Pipeline Credit Agreement, and (iii) in favor of any trustee under any indentures
governing Indebtedness of the Borrower or any of its Subsidiaries securing unpaid fees of such trustee in collateral in the possession of such trustee;

(xvii) any right which any municipal or governmental body or agency may have by virtue of any franchise, license, contract or status to purchase or designate a purchaser of, or order the sale of, any property of the
Borrower or any Subsidiary upon payment of reasonable compensation therefor or to terminate any franchise, license or other rights or to regulate the property and business of the Borrower or any Subsidiary;

(xviii) Liens on cash and cash equivalents granted pursuant to master netting agreements entered into in the ordinary course of business
in connection with Hedging Transactions; provided that (i) the transactions secured by such Liens are governed by standard International Swaps and Derivatives Association, Inc. (ISDA) documentation, and (ii) such Hedging
Transactions consist of derivative transactions contemplated to be settled in cash and not by physical delivery and are designed to minimize the risk of fluctuations in oil and gas prices with respect to the Borrowers and its
Subsidiaries operations in the ordinary course of its business;

(xix) Liens pursuant to master netting agreements
entered into in the ordinary course of business in connection with Hedging Transactions, in each case pursuant to which the Borrower or any Subsidiary of the Borrower, as a party to such master netting agreement and as pledgor, pledges or otherwise
transfers to the other party to such master netting agreement, as pledgee, in order to secure the Borrowers or such Subsidiarys obligations under such master netting agreement, a Lien upon and/or right of set off against, all right,
title, and interest of the pledgor in any obligations of the pledgee owed to the pledgor, together with all accounts and general intangibles and payment intangibles in respect of such obligations and all dividends, interest, and other proceeds from
time to time received, receivable, or otherwise distributed in respect of, or in exchange for, any or all of the foregoing;

(xx) Liens arising in the ordinary course of business 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 that is the subject of the
relevant Oil and Gas Agreement; and

(xxi) Liens not otherwise included in the definition of Permitted Encumbrances if at
the time of, and after giving effect to, the creation or assumption of



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any such Lien, the aggregate of all obligations of the Borrower and its Subsidiaries secured by any Liens not otherwise permitted does not exceed ten percent
(10%) of Consolidated Total Capitalization.

Permitted Investments shall mean:

(i) direct obligations of, or obligations the principal of and interest on which are unconditionally guaranteed by, the United States (or
by any agency thereof to the extent such obligations are backed by the full faith and credit of the United States), in each case maturing within one year from the date of acquisition thereof;

(ii) commercial paper and auction rate securities having the highest rating, at the time of acquisition thereof, of S&P or
Moodys and in either case maturing or having an auction date within six months from the date of acquisition thereof;

(iii) certificates of deposit, bankers acceptances and time deposits maturing within 180 days of the date of acquisition thereof issued or guaranteed by or placed with, and money market deposit accounts issued or offered by, any
domestic office of any commercial bank organized under the laws of the United States or any state thereof which has a combined capital and surplus and undivided profits of not less than $500,000,000;

(iv) fully collateralized repurchase agreements with a term of not more than 30 days for securities described in clause (i) above and
entered into with a financial institution satisfying the criteria described in clause (iii) above; and

(v) mutual
funds investing solely in any one or more of the Permitted Investments described in clauses (i) through (iv) above.

Person shall mean any individual, partnership, firm, corporation, association, joint venture, limited liability company, trust or other entity, or any Governmental Authority.

Pipeline means Northern Border Pipeline Company, a Texas general partnership.

Pipeline Credit Agreement means that certain Revolving Credit Agreement, dated as of May 16, 2005, among Pipeline, Wachovia Bank,
National Association, as administrative agent, and the lenders defined therein, as in effect on the Restatement Date.

Pipeline
Leverage Ratio means the ratio calculated in accordance with section 6.1 of the Pipeline Credit Agreement, as in effect on the Restatement Date, without regard to whether said credit agreement is amended or ceases to be in effect after
such date.

Pipeline Partnership Agreement means that certain General Partnership Agreement relating to the formation of
Pipeline effective as of March 9, 1978, as amended, supplemented, restated or otherwise modified from time to time.



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Plan shall mean any employee pension benefit plan (other than a Multiemployer Plan)
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 the Borrower 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.

Pro Rata Share shall mean with respect
to any Commitment of any Lender at any time, a percentage, the numerator of which shall be such Lenders Commitment (or if such Commitments have been terminated or expired or the Loans have been declared to be due and payable, such
Lenders Revolving Credit Exposure), and the denominator of which shall be the sum of such Commitments of all Lenders (or if such Commitments have been terminated or expired or the Loans have been declared to be due and payable, all Revolving
Credit Exposure of all Lenders).

Regulation D shall mean Regulation D of the Board of Governors of the Federal Reserve
System, as the same may be in effect from time to time, and any successor regulations.

Related Parties shall mean, with
respect to any specified Person, such Persons Affiliates and the respective directors, officers, employees, agents and advisors of such Person and such Persons Affiliates.

Release shall mean any release, spill, emission, leaking, dumping, injection, pouring, deposit, disposal, discharge, dispersal,
leaching or migration into the environment (including ambient air, surface water, groundwater, land surface or subsurface strata) or within any building, structure, facility or fixture.

Required Lenders shall mean, at any time, Lenders holding more than 50% of the aggregate outstanding Revolving Commitments at such
time or if the Lenders have no Commitments outstanding, then Lenders holding more than 50% of the Revolving Credit Exposure.

Requirement of Law for any Person shall mean the articles or certificate of incorporation, bylaws, partnership certificate and agreement, or limited liability company certificate of organization and agreement, as the case
may be, and other organizational and governing documents of such Person, and any law, treaty, rule or regulation, or determination of a Governmental Authority, in each case applicable to or binding upon such Person or any of its property or to which
such Person or any of its property is subject.

Responsible Officer shall mean any of the president, the chief executive
officer, the chief operating officer, the chief financial officer, the treasurer or a vice president of the general partner of the Borrower or such other representative of the Borrower or its general partner as may be designated in writing by any
one of the foregoing with the consent of the Administrative Agent, and, with respect to the financial covenants and Compliance Certificates only, the chief executive officer, chief financial officer or treasurer of the general partner of the
Borrower.



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Restatement Date shall mean the date on which the conditions precedent set forth in
Section 3.1 and Section 3.2 have been satisfied or waived in accordance with Section 10.2.

Restricted Payment shall have the meaning set forth in Section 7.5.

Revolving
Commitment shall mean, with respect to each Lender, the obligation of such Lender to make Revolving Loans to the Borrower and to participate in Letters of Credit and Swingline Loans in an aggregate principal amount not exceeding the amount
set forth with respect to such Lender on Schedule II, as such schedule may be amended pursuant to Section 2.21, or in the case of a Person becoming a Lender after the Restatement Date through an assignment of an existing Revolving
Commitment, the amount of the assigned Revolving Commitment as provided in the Assignment and Acceptance executed by such Person as an assignee, as the same may be increased or deceased pursuant to terms hereof.

Revolving Commitment Termination Date shall mean the earliest of (i) the Maturity Date, (ii) the date on which the Revolving
Commitments are terminated pursuant to Section 2.7 and (iii) the date on which all amounts outstanding under this Agreement have been declared or have automatically become due and payable (whether by acceleration or otherwise).

Revolving Credit Exposure shall mean, with respect to any Lender at any time, the sum of the outstanding principal
amount of such Lenders Revolving Loans, LC Exposure and Swingline Exposure.

Revolving Credit Note shall mean a
promissory note of the Borrower payable to the order of a requesting Lender in the principal amount of such Lenders Revolving Commitment, in substantially the form of Exhibit A.

Revolving Loan shall mean a loan made by a Lender (other than the Swingline Lender) to the Borrower under its Revolving Commitment,
which may either be a Base Rate Loan or a Eurodollar Loan.

S&P shall mean Standard & Poors, a
Division of the McGraw-Hill Companies.

Senior Note Indentures means the 2010 Senior Note Indenture and/or the 2011
Senior Note Indenture, as the case may be.

Senior Notes means the 2010 Senior Notes and/or the 2011 Senior Notes, as
the case may be.

Subsidiary shall mean, with respect to any Person (the parent), any corporation,
partnership, joint venture, limited liability company, association or other entity the accounts of which would be consolidated with those of the parent in the parents consolidated financial statements if such financial statements were prepared
in accordance with GAAP as of such date, as well as any other corporation, partnership, joint venture, limited liability company, association or other entity of which securities or other ownership interests representing more than 50% of the equity
or more than 50% of the ordinary voting power, or in the case of a partnership, more than 50% of the general partnership interests are, as of such date, owned,



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controlled or held. Unless otherwise indicated, all references to Subsidiary hereunder shall mean a Subsidiary of the Borrower.

Swingline Commitment shall mean the commitment of the Swingline Lender to make Swingline Loans in an aggregate principal amount at any
time outstanding not to exceed (i) during the period from the Restatement Date to the date that is five (5) Business Days thereafter, $75,000,000, and (ii) at all times after the period described in the preceding clause (i),
$50,000,000.

Swingline Exposure shall mean, with respect to each Lender, the principal amount of the Swingline Loans in
which such Lender is legally obligated either to make a Base Rate Loan or to purchase a participation in accordance with Section 2.4, which shall equal such Lenders Pro Rata Share of all outstanding Swingline Loans.

Swingline Lender shall mean SunTrust Bank, or any other Lender that may agree to make Swingline Loans hereunder.

Swingline Loan shall mean a loan made to the Borrower by the Swingline Lender under the Swingline Commitment.

Swingline Note shall mean the promissory note of the Borrower payable to the order of the Swingline Lender in the principal amount of
the Swingline Commitment, substantially the form of Exhibit B.

Syndication Agent shall mean Wachovia Bank,
National Association, as Syndication Agent.

Synthetic Lease shall mean a lease transaction under which the parties
intend that (i) the lease will be treated as an operating lease by the lessee pursuant to Statement of Financial Accounting Standards No. 13, as amended and (ii) the lessee will be entitled to various tax and other
benefits ordinarily available to owners (as opposed to lessees) of like property.

Synthetic Lease Obligations shall
mean, with respect to any Person, the sum of (i) all remaining rental obligations of such Person as lessee under Synthetic Leases which are attributable to principal and, without duplication, (ii) all rental and purchase price payment
obligations of such Person under such Synthetic Leases assuming such Person exercises the option to purchase the lease property at the end of the lease term.

2010 Senior Notes means the unsecured 8-7/8% notes dated as of June 2, 2000 issued by the Borrower in an aggregate principal amount of $250,000,000 with a maturity date of June 15, 2010.

2010 Senior Note Indenture means the indenture authorizing the issuance of the 2010 Senior Notes.

2011 Senior Notes means the 7.10% unsecured notes dated as of March 21, 2001 issued by the Borrower in an aggregate principal
amount of $225,000,000 with a maturity date of March 15, 2011.



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2011 Senior Note Indenture means the indenture authorizing the issuance of the 2011
Senior Notes.

Taxes shall mean any and all present or future taxes, levies, imposts, duties, deductions, charges or
withholdings imposed by any Governmental Authority.

TCPILP means TC PipeLines Intermediate Limited Partnership, a
Delaware limited partnership.

Threshold Amount means $100,000,000.

Type, when used in reference to a 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 Adjusted LIBO Rate or the Base Rate.

Withdrawal Liability shall mean
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 1.2. Classifications of Loans and Borrowings. For purposes of this Agreement, Loans may be classified and referred to by Class
(e.g. a Revolving Loan or Swingline Loan) or by Type (e.g. a Eurodollar Loan or Base Rate Loan) or by Class and Type (e.g. Revolving Eurodollar Loan). Borrowings also may be classified and
referred to by Class (e.g. Revolving Borrowing) or by Type (e.g. Eurodollar Borrowing) or by Class and Type (e.g. Revolving Eurodollar Borrowing).

Section 1.3. Accounting Terms and Determination. Unless otherwise defined or specified herein, all accounting terms used herein shall
be interpreted, all accounting determinations hereunder shall be made, and all financial statements required to be delivered hereunder shall be prepared, in accordance with GAAP as in effect from time to time, applied on a basis consistent with the
most recent audited consolidated financial statement of the Borrower delivered pursuant to Section 5.1(a); provided, that if the Borrower notifies the Administrative Agent that the Borrower wishes to amend any covenant in
Article VI to eliminate the effect of any change in GAAP on the operation of such covenant (or if the Administrative Agent notifies the Borrower that the Required Lenders wish to amend Article VI for such purpose), then the
Borrowers compliance with such covenant shall be determined on the basis of GAAP in effect immediately before the relevant change in GAAP became effective, until either such notice is withdrawn or such covenant is amended in a manner
satisfactory to the Borrower and the Required Lenders.

Section 1.4. 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. In the computation of periods of time
from a specified date to a later specified date, the word from means from and including and the word to means to but excluding. Unless the context requires otherwise (i) any definition of or
reference to any agreement, instrument or



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other document herein shall be construed as referring to such agreement, instrument or other document as it was originally executed or as it may from time to
time be amended, restated, supplemented or otherwise modified (subject to any restrictions on such amendments, supplements or modifications set forth herein), (ii) any reference herein to any Person shall be construed to include such
Persons successors and permitted assigns, (iii) the words hereof, herein and hereunder and words of similar import shall be construed to refer to this Agreement as a whole and not to any particular
provision hereof, (iv) all references to Articles, Sections, Exhibits and Schedules shall be construed to refer to Articles, Sections, Exhibits and Schedules to this Agreement and (v) all references to a specific time shall be construed to
refer to the time in the city and state of the Administrative Agents principal office, unless otherwise indicated.

ARTICLE II

AMOUNT AND TERMS OF THE COMMITMENTS

Section 2.1.General Description of Facilities. Subject to and upon the terms and conditions herein set forth, (i) the Lenders hereby establish in favor of the Borrower a revolving
credit facility pursuant to which each Lender severally agrees (to the extent of such Lenders Revolving Commitment) to make Revolving Loans to the Borrower in accordance with Section 2.2, (ii) the Issuing Bank agrees to issue Letters
of Credit in accordance with Section 2.20, (iii) the Swingline Lender agrees to make Swingline Loans in accordance with Section 2.4 and (iv) each Lender agrees to purchase a participation interest in the Letters of Credit and the
Swingline Loans pursuant to the terms and conditions hereof; provided, that in no event shall the aggregate principal amount of all outstanding Revolving Loans, Swingline Loans and outstanding LC Exposure exceed at any time the Aggregate Revolving
Commitment Amount from time to time in effect.

Section 2.2.Revolving Loans. Subject to the terms and conditions
set forth herein, each Lender severally agrees to make Revolving Loans, ratably in proportion to its Pro Rata Share, to the Borrower, from time to time during the Availability Period, in an aggregate principal amount outstanding at any time that
will not result in such Lenders Revolving Credit Exposure exceeding such Lenders Revolving Commitment. During the Availability Period, the Borrower shall be entitled to borrow, prepay and reborrow Revolving Loans in accordance with the
terms and conditions of this Agreement; provided, that the Borrower may not borrow or reborrow should there exist a Default or Event of Default.

Section 2.3.Procedure for Revolving Borrowings. The Borrower shall give the Administrative Agent written notice (or telephonic notice promptly confirmed in writing) of each Revolving Borrowing substantially in the
form of Exhibit 2.3 (a Notice of Revolving Borrowing) (x) prior to 11:00 a.m. (New York time) on the requested date of each Base Rate Borrowing and (y) prior to 11:00 a.m. (New York time) three (3) Business
Days prior to the requested date of each Eurodollar Borrowing. Each Notice of Revolving Borrowing shall be irrevocable and shall specify: (i) the aggregate principal amount of such Borrowing, (ii) the date of such Borrowing (which shall be
a Business Day), (iii) the Type of such Revolving Loan



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comprising such Borrowing and (iv) in the case of a Eurodollar Borrowing, the duration of the initial Interest Period applicable thereto (subject to the
provisions of the definition of Interest Period). Each Revolving Borrowing shall consist entirely of Base Rate Loans or Eurodollar Loans, as the Borrower may request. The aggregate principal amount of each Borrowing shall be not less than $5,000,000
or a larger multiple of $1,000,000; provided, that Base Rate Loans made pursuant to Section 2.4 or Section 2.20(d) may be made in lesser amounts as provided therein. At no time shall the total number of Eurodollar Borrowings
outstanding at any time exceed five. Promptly following the receipt of a Notice of Revolving Borrowing in accordance herewith, the Administrative Agent shall advise each Lender of the details thereof and the amount of such Lenders Revolving
Loan to be made as part of the requested Revolving Borrowing.

Section 2.4.Swingline Commitment.

(a) Subject to the terms and conditions set forth herein, the Swingline Lender agrees to make Swingline Loans to the Borrower, from time to time during
the Availability Period, in an aggregate principal amount outstanding at any time not to exceed the lesser of (i) the Swingline Commitment then in effect and (ii) the difference between the Aggregate Revolving Commitment Amount and the
aggregate Revolving Credit Exposures of all Lenders; provided, that the Swingline Lender shall not be required to make a Swingline Loan to refinance an outstanding Swingline Loan. The Borrower shall be entitled to borrow, repay and reborrow
Swingline Loans in accordance with the terms and conditions of this Agreement.

(b) The Borrower shall give the Administrative Agent
written notice (or telephonic notice promptly confirmed in writing) of each Swingline Borrowing substantially in the form of Exhibit 2.4 attached hereto (Notice of Swingline Borrowing) prior to 11:00 a.m. (New York time) on
the requested date of each Swingline Borrowing. Each Notice of Swingline Borrowing shall be irrevocable and shall specify: (i) the principal amount of such Swingline Loan, (ii) the date of such Swingline Loan (which shall be a Business
Day) and (iii) the account of the Borrower to which the proceeds of such Swingline Loan should be credited. The Administrative Agent will promptly advise the Swingline Lender of each Notice of Swingline Borrowing. Each Swingline Loan shall
accrue interest at the Base Rate or any other interest rate as agreed between the Borrower and the Swingline Lender and shall have an Interest Period (subject to the definition thereof) as agreed between the Borrower and the Swingline Lender. The
aggregate principal amount of each Swingline Loan shall be not less than $100,000 or a larger multiple of $50,000, or such other minimum amounts agreed to by the Swingline Lender and the Borrower. The Swingline Lender will make the proceeds of each
Swingline Loan available to the Borrower in Dollars in immediately available funds at the account specified by the Borrower in the applicable Notice of Swingline Borrowing not later than 1:00 p.m. (New York time) on the requested date of such
Swingline Loan.

(c) The Swingline Lender, at any time and from time to time in its sole discretion, may, on behalf of the Borrower (which
hereby irrevocably authorizes and directs the Swingline Lender to act on its behalf), give a Notice of Revolving Borrowing to the Administrative Agent requesting the Lenders (including the Swingline Lender) to make Base Rate Loans in an amount equal
to the unpaid principal amount of any Swingline Loan. Each Lender will make the proceeds of its Base Rate Loan included in such Borrowing available to the



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Administrative Agent for the account of the Swingline Lender in accordance with Section 2.5, which will be used solely for the repayment of such
Swingline Loan.

(d) If for any reason a Base Rate Borrowing may not be (as determined in the sole discretion of the Administrative Agent),
or is not, made in accordance with the foregoing provisions, then each Lender (other than the Swingline Lender) shall purchase an undivided participating interest in such Swingline Loan in an amount equal to its Pro Rata Share thereof on the date
that such Base Rate Borrowing should have occurred. On the date of such required purchase, each Lender shall promptly transfer, in immediately available funds, the amount of its participating interest to the Administrative Agent for the account of
the Swingline Lender. If such Swingline Loan bears interest at a rate other than the Base Rate, such Swingline Loan shall automatically become a Base Rate Loan on the effective date of any such participation and interest shall become payable on
demand.

(e) Each Lenders obligation to make a Base Rate Loan pursuant to Section 2.4(c) or to purchase the participating
interests pursuant to Section 2.4(d) shall be absolute and unconditional and shall not be affected by any circumstance, including without limitation (i) any setoff, counterclaim, recoupment, defense or other right that such Lender
or any other Person may have or claim against the Swingline Lender, the Borrower or any other Person for any reason whatsoever, (ii) the existence of a Default or an Event of Default or the termination of any Lenders Revolving Commitment,
(iii) the existence (or alleged existence) of any event or condition which has had or could reasonably be expected to have a Material Adverse Effect, (iv) any breach of this Agreement or any other Loan Document by the Borrower, the
Administrative Agent or any Lender or (v) any other circumstance, happening or event whatsoever, whether or not similar to any of the foregoing. If such amount is not in fact made available to the Swingline Lender by any Lender, the Swingline
Lender shall be entitled to recover such amount on demand from such Lender, together with accrued interest thereon for each day from the date of demand thereof (i) at the Federal Funds Rate until the second Business Day after such demand and
(ii) at the Base Rate at all times thereafter. Until such time as such Lender makes its required payment, the Swingline Lender shall be deemed to continue to have outstanding Swingline Loans in the amount of the unpaid participation for all
purposes of the Loan Documents. In addition, such Lender shall be deemed to have assigned any and all payments made of principal and interest on its Loans and any other amounts due to it hereunder, to the Swingline Lender to fund the amount of such
Lenders participation interest in such Swingline Loans that such Lender failed to fund pursuant to this Section 2.4, until such amount has been purchased in full.

Section 2.5. Funding of Borrowings.

(a) Each Lender will make available each Loan to be made by it hereunder on the proposed date thereof by wire transfer in immediately available funds by 1:00 p.m. (New York time) to the Administrative Agent at the
Payment Office; provided, that the Swingline Loans will be made as set forth in Section 2.4. The Administrative Agent will make such Loans available to the Borrower by promptly crediting the amounts that it receives, in like funds
by the close of business on such proposed date, to an account maintained by the Borrower with the Administrative Agent or at the Borrowers option, by effecting a wire transfer of such amounts to an account designated by the Borrower to the
Administrative Agent.



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(b) Unless the Administrative Agent shall have been notified by any Lender (x) prior to 12:00 p.m.
(New York time) on the requested date of a Base Rate Borrowing and (y) prior to 5:00 p.m. (New York time) one (1) Business Day prior to the date of a Eurodollar Borrowing in which such Lender is to participate that such Lender will not
make available to the Administrative Agent such Lenders share of such Borrowing, the Administrative Agent may assume that such Lender has made such amount available to the Administrative Agent on such date, and the Administrative Agent, in
reliance on such assumption, may make available to the Borrower on such date a corresponding amount. If such corresponding amount is not in fact made available to the Administrative Agent by such Lender on the date of such Borrowing, the
Administrative Agent shall be entitled to recover such corresponding amount on demand from such Lender together with interest at the Federal Funds Rate until the second Business Day after such demand and thereafter at the Base Rate. If such Lender
does not pay such corresponding amount forthwith upon the Administrative Agents demand therefor, the Administrative Agent shall promptly notify the Borrower, and the Borrower shall immediately pay such corresponding amount to the
Administrative Agent together with interest at the rate specified for such Borrowing. Nothing in this subsection shall be deemed to relieve any Lender from its obligation to fund its Pro Rata Share of any Borrowing hereunder or to prejudice any
rights which the Borrower may have against any Lender as a result of any default by such Lender hereunder.

(c) All Revolving Borrowings
shall be made by the Lenders on the basis of their respective Pro Rata Shares. No Lender shall be responsible for any default by any other Lender in its obligations hereunder, and each Lender shall be obligated to make its Loans provided to be made
by it hereunder, regardless of the failure of any other Lender to make its Loans hereunder.

Section 2.6. Interest
Elections.

(a) Each Borrowing initially shall be of the Type specified in the applicable Notice of Borrowing, and in the case of a
Eurodollar Borrowing, shall have an initial Interest Period as specified in such Notice of Borrowing. Thereafter, the Borrower may elect to convert such Borrowing into 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 2.6.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 Lenders holding Loans comprising such Borrowing, and the Loans comprising each such portion shall be considered a separate Borrowing. This Section shall NOT apply to Swingline Borrowings, which may not be converted or
continued.

(b) To make an election pursuant to this Section 2.6, the Borrower shall give the Administrative Agent prior
written notice (or telephonic notice promptly confirmed in writing) of each Borrowing substantially in the form of Exhibit 2.6 attached hereto (a Notice of Conversion/Continuation) that is to be converted or continued, as
the case may be, (x) prior to 11:00 a.m. (New York time) on the requested date of a conversion into a Base Rate Borrowing and (y) prior to 11:00 a.m. (New York time) three (3) Business Days prior to a continuation of or conversion
into a Eurodollar Borrowing. Each such Notice of Conversion/Continuation shall be irrevocable and shall specify (i) the Borrowing to which such Notice of Continuation/Conversion applies and if different options are being elected with respect to
different portions thereof, the



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portions thereof that are to be allocated to each resulting Borrowing (in which case the information to be specified pursuant to clauses (iii) and
(iv) shall be specified for each resulting Borrowing); (ii) the effective date of the election made pursuant to such Notice of Continuation/Conversion, which shall be a Business Day, (iii) whether the resulting Borrowing is to be a
Base Rate Borrowing or a Eurodollar Borrowing; and (iv) if the resulting Borrowing is to be a Eurodollar Borrowing, the Interest Period applicable thereto after giving effect to such election, which shall be a period contemplated by the
definition of Interest Period. If any such Notice of Continuation/Conversion requests a Eurodollar Borrowing but does not specify an Interest Period, the Borrower shall be deemed to have selected an Interest Period of one month. The
principal amount of any resulting Borrowing shall satisfy the minimum borrowing amount for Eurodollar Borrowings and Base Rate Borrowings set forth in Section 2.3.

(c) If, on the expiration of any Interest Period in respect of any Eurodollar Borrowing, the Borrower shall have failed to deliver a Notice of
Conversion/Continuation, then, unless such Borrowing is repaid as provided herein, the Borrower shall be deemed to have elected to convert such Borrowing to a Base Rate Borrowing. No Borrowing may be converted into, or continued as, a Eurodollar
Borrowing if a Default or an Event of Default exists, unless the Administrative Agent and each of the Lenders shall have otherwise consented in writing. No conversion of any Eurodollar Loans shall be permitted except on the last day of the Interest
Period in respect thereof.

(d) Upon receipt of any Notice of Conversion/Continuation, the Administrative Agent shall promptly notify each
Lender of the details thereof and of such Lenders portion of each resulting Borrowing.

Section 2.7.Optional
Reduction and Termination of Commitments.

(a) Unless previously terminated, all Revolving Commitments, Swingline Commitments and LC
Commitments shall terminate on the Revolving Commitment Termination Date.

(b) Upon at least three (3) Business Days prior
written notice (or telephonic notice promptly confirmed in writing) to the Administrative Agent (which notice shall be irrevocable), the Borrower may reduce the Aggregate Revolving Commitments in part or terminate the Aggregate Revolving Commitments
in whole; provided, that (i) any partial reduction shall apply to reduce proportionately and permanently the Revolving Commitment of each Lender, (ii) any partial reduction pursuant to this Section 2.7 shall be in an
amount of at least $5,000,000 and any larger multiple of $1,000,000, and (iii) no such reduction shall be permitted which would reduce the Aggregate Revolving Commitment Amount to an amount less than the outstanding Revolving Credit Exposures
of all Lenders. Any such reduction in the Aggregate Revolving Commitment Amount below the sum of the principal amount of the Swingline Commitment and the LC Commitment shall result in a proportionate reduction (rounded to the next lowest integral
multiple of $100,000) in the Swingline Commitment and the LC Commitment.



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Section 2.8.Repayment of Loans.

(a) The outstanding principal amount of all Revolving Loans shall be due and payable (together with accrued and unpaid interest thereon) on the Revolving
Commitment Termination Date.

(b) The principal amount of each Swingline Borrowing shall be due and payable (together with accrued and
unpaid interest thereon) on the earlier of (i) the last day of the Interest Period applicable to such Borrowing and (ii) the Revolving Commitment Termination Date.

Section 2.9.Evidence of Indebtedness. (a) Each Lender shall maintain in accordance with its usual practice appropriate
records evidencing the Indebtedness of the Borrower to such Lender resulting from each Loan made by such Lender from time to time, including the amounts of principal and interest payable thereon and paid to such Lender from time to time under this
Agreement. The Administrative Agent shall maintain appropriate records in which shall be recorded (i) the Revolving Commitment of each Lender, (ii) the amount of each Loan made hereunder by each Lender, the Class and Type thereof and the
Interest Period applicable thereto, (iii) the date of each continuation thereof pursuant to Section 2.6, (iv) the date of each conversion of all or a portion thereof to another Type pursuant to Section 2.6,
(v) the date and amount of any principal or interest due and payable or to become due and payable from the Borrower to each Lender hereunder in respect of such Loans and (vi) both the date and amount of any sum received by the
Administrative Agent hereunder from the Borrower in respect of the Loans and each Lenders Pro Rata Share thereof. The entries made in such records shall be prima facie evidence of the existence and amounts of the obligations of the
Borrower therein recorded; provided, that the failure or delay of any Lender or the Administrative Agent in maintaining or making entries into any such record or any error therein shall not in any manner affect the obligation of the Borrower
to repay the Loans (both principal and unpaid accrued interest) of such Lender in accordance with the terms of this Agreement.

(b) At the
request of any Lender (including the Swingline Lender) at any time, the Borrower agrees that it will execute and deliver to such Lender a Revolving Credit Note and, in the case of the Swingline Lender only, a Swingline Note, payable to the order of
such Lender.

Section 2.10.Prepayments.

(a) The Borrower shall have the right at any time and from time to time to prepay any Borrowing, in whole or in part, without premium or penalty, by
giving irrevocable written notice (or telephonic notice promptly confirmed in writing) to the Administrative Agent no later than (i) in the case of prepayment of any Eurodollar Borrowing, 11:00 a.m. (New York time) not less than three
(3) Business Days prior to any such prepayment, (ii) in the case of any prepayment of any Base Rate Borrowing, not less than one Business Day prior to the date of such prepayment, and (iii) in the case of Swingline Borrowings, prior
to 11:00 a.m. (New York time) on the date of such prepayment. Each such notice shall be irrevocable and shall specify the proposed date of such prepayment and the principal amount of each Borrowing or portion thereof to be prepaid. Upon receipt of
any such notice, the Administrative Agent shall promptly notify each affected Lender of the contents thereof and of such Lenders Pro Rata Share of any such



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prepayment. If such notice is given, the aggregate amount specified in such notice shall be due and payable on the date designated in such notice, together
with accrued interest to such date on the amount so prepaid in accordance with Section 2.11(d); provided, that if a Eurodollar Borrowing is prepaid on a date other than the last day of an Interest Period applicable thereto, the
Borrower shall also pay all amounts required pursuant to Section 2.17. Each partial prepayment of any Loan (other than a Swingline Loan) shall be in an amount that would be permitted in the case of an advance of a Revolving Borrowing of
the same Type pursuant to Section 2.2 or in the case of a Swingline Loan pursuant to Section 2.4. Each prepayment of a Borrowing shall be applied ratably to the Loans comprising such Borrowing.

(b) If at any time the Revolving Credit Exposure of all Lenders exceeds the Aggregate Revolving Commitment Amount, as reduced pursuant to
Section 2.7 or otherwise, the Borrower shall immediately repay Swingline Loans and Revolving Loans in an amount equal to such excess, together with all accrued and unpaid interest on such excess amount and any amounts due under
Section 2.17. Each prepayment shall be applied first to the Swingline Loans to the full extent thereof, second to the Base Rate Loans to the full extent thereof, and finally to Eurodollar Loans to the full extent thereof. If after giving
effect to prepayment of all Swingline Loans and Revolving Loans, the Revolving Credit Exposure of all Lenders exceeds the Aggregate Revolving Commitment Amount, the Borrower shall deposit in an account with the Administrative Agent, in the name of
the Administrative Agent and for the benefit of the Issuing Bank and the Lenders, an amount in cash equal to such excess plus any accrued and unpaid fees thereon to be held as collateral for the LC Exposure. Such account shall be administered
in accordance with Section 2.20(g) hereof.

Section 2.11.Interest on Loans.

(a) The Borrower shall pay interest on each Base Rate Loan at the Base Rate in effect from time to time and on each Eurodollar Loan at the Adjusted LIBO
Rate for the applicable Interest Period in effect for such Loan, plus, in each case, the Applicable Margin in effect from time to time.

(b) The Borrower shall pay interest on each Swingline Loan at the rate applicable to such Loan pursuant to Section 2.4(b).

(c) While an Event of Default exists or after acceleration, at the option of the Required Lenders, the Borrower shall pay interest (Default Interest) with respect to all Eurodollar Loans at the rate otherwise applicable
for the then-current Interest Period plus an additional 2% per annum until the last day of such Interest Period, and thereafter, and with respect to all Base Rate Loans (including all Swingline Loans) and all other Obligations hereunder
(other than Loans), at an all-in rate in effect for Base Rate Loans, plus an additional 2% per annum.

(d) Interest on the
principal amount of all Loans shall accrue from and including the date such Loans are made to but excluding the date of any repayment thereof. Interest on all outstanding Base Rate Loans shall be payable quarterly in arrears on the last day of each
March, June, September and December and on the Revolving Commitment Termination Date. Interest on all outstanding Eurodollar Loans shall be payable on the last day of each



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Interest Period applicable thereto, and, in the case of any Eurodollar Loans having an Interest Period in excess of three months or 90 days, respectively, on
each day which occurs every three months or 90 days, as the case may be, after the initial date of such Interest Period, and on the Revolving Commitment Termination Date. Interest on each Swingline Loan shall be payable on the maturity date of such
Loan, which shall be the last day of the Interest Period applicable thereto, and on the Revolving Commitment Termination Date. Interest on any Loan which is converted into a Loan of another Type or which is repaid or prepaid shall be payable on the
date of such conversion or on the date of any such repayment or prepayment (on the amount repaid or prepaid) thereof. All Default Interest shall be payable on demand.

(e) The Administrative Agent shall determine each interest rate applicable to the Loans hereunder and shall promptly notify the Borrower and the Lenders of such rate in writing (or by telephone, promptly confirmed in
writing). Any such determination shall be conclusive and binding for all purposes, absent manifest error.

Section 2.12.
Fees.

(a) The Borrower shall pay to the Administrative Agent and the Syndication Agent for their own respective accounts fees in
the amounts and at the times previously agreed upon in writing by the Borrower and the Administrative Agent or the Syndication Agent, as applicable, including the amounts described in the Fee Letter.

(b) The Borrower agrees to pay to the Administrative Agent for the account of each Lender a facility fee, which shall accrue at the Applicable Percentage
per annum (determined daily in accordance with Schedule I) on the daily amount of the Revolving Commitment (whether used or unused) of such Lender during the Availability Period; provided, that if such Lender continues to have any
Revolving Credit Exposure after the Revolving Commitment Termination Date, then the facility fee shall continue to accrue on the daily amount of such Revolving Credit Exposure from and after the Revolving Commitment Termination Date to the date that
all of such Lenders Revolving Credit Exposure has been paid in full.

(c) The Borrower agrees to pay to the Administrative Agent for
the account of each Lender a utilization fee, which shall accrue at the Applicable Percentage per annum (determined daily in accordance with Schedule I) on the daily amount of the Revolving Credit Exposure for each day that the Revolving
Credit Exposure on such date equals or exceeds 50% of the Aggregate Revolving Commitment Amount on such date during the Availability Period; provided that if the Lenders continue to have Revolving Credit Exposure that equals or exceeds 50% of
the Aggregate Revolving Commitment Amount after the Revolving Commitment Termination Date, then the utilization fee shall continue to accrue on the daily amount of such Revolving Credit Exposure from and after the Revolving Commitment Termination
Date to the date that all of such Revolving Credit Exposure has been paid in full.

(d) The Borrower agrees to pay (i) to the
Administrative Agent, for the account of each Lender, a letter of credit fee with respect to its participation in each Letter of Credit, which shall accrue at a rate per annum equal to the Applicable Margin for Eurodollar Loans then in effect on the
average daily amount of such Lenders LC Exposure attributable to such Letter of Credit during the period from and including the date of issuance of such Letter of



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Credit to but excluding the date on which such Letter of Credit expires or is drawn in full (including without limitation any LC Exposure that remains
outstanding after the Revolving Commitment Termination Date) and (ii) to the Issuing Bank for its own account a fronting fee, which shall accrue at the rate of 0.125% per annum on the average daily amount of the LC Exposure (excluding any
portion thereof attributable to unreimbursed LC Disbursements) during the Availability Period (or until the date that such Letter of Credit is irrevocably cancelled, whichever is later), as well as the Issuing Banks standard fees with respect
to issuance, amendment, renewal or extension of any Letter of Credit or processing of drawings thereunder. Notwithstanding the foregoing, if the Required Lenders elect to increase the interest rate on the Loans to the Default Interest pursuant to
Section 2.11(c), the rate per annum used to calculate the letter of credit fee pursuant to clause (i) above shall automatically be increased by an additional 2% per annum.

(e) The Borrower shall pay to the Administrative Agent all other fees previously agreed upon by the Borrower and the Administrative Agent in the Fee
Letter, which shall be due and payable on the Restatement Date.

(f) Accrued fees under paragraphs (b), (c) and (d) above shall
be payable quarterly in arrears on the last day of each March, June, September and December, and on the Revolving Commitment Termination Date (and if later, the date the Loans and LC Exposure shall be repaid in their entirety); provided
further, that any such fees accruing after the Revolving Commitment Termination Date shall be payable on demand.

Section 2.13.
Computation of Interest and Fees. Interest hereunder based on the Administrative Agents prime lending rate shall be computed on the basis of a year of 365 days (or 366 days in a leap year) and paid for the actual number of days
elapsed (including the first day but excluding the last day). All other interest and all fees shall be computed on the basis of a year of 360 days and paid for the actual number of days elapsed (including the first day but excluding the last day).
Each determination by the Administrative Agent of an interest amount or fee hereunder shall be made in good faith and, except for manifest error, shall be final, conclusive and binding for all purposes.

Section 2.14. Inability to Determine Interest Rates. If prior to the commencement of any Interest Period for any Eurodollar Borrowing,

(i) the Administrative Agent shall have determined (which determination shall be conclusive and binding upon the Borrower)
that, by reason of circumstances affecting the relevant interbank market, adequate means do not exist for ascertaining LIBOR for such Interest Period, or

(ii) the Administrative Agent shall have received notice from the Required Lenders that the Adjusted LIBO Rate does not adequately and fairly reflect the cost to such Lenders (or Lender, as the case may be) of making,
funding or maintaining their (or its, as the case may be) Eurodollar Loans for such Interest Period,

the Administrative Agent shall give written notice
(or telephonic notice, promptly confirmed in writing) to the Borrower and to the Lenders as soon as practicable thereafter. In the case of



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Eurodollar Loans, until the Administrative Agent shall notify the Borrower and the Lenders that the circumstances giving rise to such notice no longer exist,
(i) the obligations of the Lenders to make Eurodollar Revolving Loans or to continue or convert outstanding Loans as or into Eurodollar Loans shall be suspended and (ii) all such affected Loans shall be converted into Base Rate Loans on
the last day of the then current Interest Period applicable thereto unless the Borrower prepays such Loans in accordance with this Agreement. Unless the Borrower notifies the Administrative Agent at least one Business Day before the date of any
Eurodollar Revolving Borrowing for which a Notice of Revolving Borrowing has previously been given that it elects not to borrow on such date, then such Revolving Borrowing shall be made as a Base Rate Borrowing.

Section 2.15.Illegality. If any Change in Law shall make it unlawful or impossible for any Lender to make, maintain or fund
any Eurodollar Loan and such Lender shall so notify the Administrative Agent, the Administrative Agent shall promptly give notice thereof to the Borrower and the other Lenders, whereupon until such Lender notifies the Administrative Agent and the
Borrower that the circumstances giving rise to such suspension no longer exist, the obligation of such Lender to make Eurodollar Revolving Loans, or to continue or convert outstanding Loans as or into Eurodollar Loans, shall be suspended. In the
case of the making of a Eurodollar Revolving Borrowing, such Lenders Revolving Loan shall be made as a Base Rate Loan as part of the same Revolving Borrowing for the same Interest Period and if the affected Eurodollar Loan is then outstanding,
such Loan shall be converted to a Base Rate Loan either (i) on the last day of the then current Interest Period applicable to such Eurodollar Loan if such Lender may lawfully continue to maintain such Loan to such date or (ii) immediately
if such Lender shall determine that it may not lawfully continue to maintain such Eurodollar Loan to such date. Notwithstanding the foregoing, the affected Lender shall, prior to giving such notice to the Administrative Agent, designate a different
Applicable Lending Office if such designation would avoid the need for giving such notice and if such designation would not otherwise be disadvantageous to such Lender in the good faith exercise of its discretion.

Section 2.16.Increased Costs.

(a) If any Change in Law shall:

(i) impose, modify or deem applicable any reserve, special
deposit or similar requirement that is not otherwise included in the determination of the Adjusted LIBO Rate hereunder against assets of, deposits with or for the account of, or credit extended by, any Lender (except any such reserve requirement
reflected in the Adjusted LIBO Rate) or the Issuing Bank; or

(ii) impose on any Lender or on the Issuing Bank or the
eurodollar interbank market any other condition affecting this Agreement or any Eurodollar Loans made by such Lender or any Letter of Credit or any participation therein;

and the result of either of the foregoing is to increase the cost to such Lender of making, converting into, continuing or maintaining a Eurodollar Loan or to increase the cost to such Lender or the Issuing Bank of
participating in or issuing any Letter of Credit or to reduce the amount received or receivable by such Lender or the Issuing Bank hereunder (whether of



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principal, interest or any other amount), then the Borrower shall promptly pay, upon written notice from and demand by such Lender on the Borrower (with a
copy of such notice and demand to the Administrative Agent), to the Administrative Agent for the account of such Lender, within five Business Days after the date of such notice and demand, additional amount or amounts sufficient to compensate such
Lender or the Issuing Bank, as the case may be, for such additional costs incurred or reduction suffered.

(b) If any Lender or the Issuing
Bank shall have determined that on or after the date of this Agreement any Change in Law regarding capital requirements has or would have the effect of reducing the rate of return on such Lenders or the Issuing Banks capital (or on the
capital of such Lenders or the Issuing Banks parent corporation) as a consequence of its obligations hereunder or under or in respect of any Letter of Credit to a level below that which such Lender or the Issuing Bank or such
Lenders or the Issuing Banks parent corporation could have achieved but for such Change in Law (taking into consideration such Lenders or the Issuing Banks policies or the policies of such Lenders or the Issuing
Banks parent corporation with respect to capital adequacy) then, from time to time, within five (5) Business Days after receipt by the Borrower of written demand by such Lender (with a copy thereof to the Administrative Agent), the
Borrower shall pay to such Lender such additional amounts as will compensate such Lender or the Issuing Bank or such Lenders or the Issuing Banks parent corporation for any such reduction suffered.

(c) A certificate of a Lender or the Issuing Bank setting forth the amount or amounts necessary to compensate such Lender or the Issuing Bank or such
Lenders or the Issuing Banks parent corporation, as the case may be, specified in paragraph (a) or (b) of this Section 2.16 shall be delivered to the Borrower (with a copy to the Administrative Agent) and shall be
conclusive, absent manifest error. The Borrower shall pay any such Lender or the Issuing Bank, as the case may be, such amount or amounts within 10 days after receipt thereof.

(d) Failure or delay on the part of any Lender or the Issuing Bank to demand compensation pursuant to this Section 2.16 shall not constitute
a waiver of such Lenders or the Issuing Banks right to demand such compensation; provided, that the Borrower shall not be required to compensate a Lender or the Issuing Bank under this Section 2.16 for any increased
costs or reductions incurred more than 90 days prior to the date that such Lender or the Issuing Bank notifies the Borrower of such increased costs or reductions and of such Lenders or the Issuing Banks intention to claim compensation
therefor; provided further, that if the Change in Law giving rise to such increased costs or reductions is retroactive, then such 90 day period shall be extended to include the period of such retroactive effect.

Section 2.17.Funding Indemnity. In the event of (a) the payment of any principal of a Eurodollar Loan other than on the
last day of the Interest Period applicable thereto (including as a result of an Event of Default), (b) the conversion or continuation of a Eurodollar Loan other than on the last day of the Interest Period applicable thereto or (c) the
failure by the Borrower to borrow, prepay, convert or continue any Eurodollar Loan on the date specified in any applicable notice (regardless of whether such notice is withdrawn or revoked). In the case of a Eurodollar Loan, such loss, cost or
expense shall be deemed to include an amount determined by such Lender to be the excess, if any, of (A) the amount of interest that would have accrued on the principal amount of such Eurodollar Loan if such event had not occurred at the
Adjusted



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LIBO Rate applicable to such Eurodollar Loan for the period from the date of such event to the last day of the then current Interest Period therefor (or in
the case of a failure to borrow, convert or continue, for the period that would have been the Interest Period for such Eurodollar Loan) over (B) the amount of interest that would accrue on the principal amount of such Eurodollar Loan for the
same period if the Adjusted LIBO Rate were set on the date such Eurodollar Loan was prepaid or converted or the date on which the Borrower failed to borrow, convert or continue such Eurodollar Loan. A certificate as to any additional amount payable
under this Section 2.17 submitted to the Borrower by any Lender (with a copy to the Administrative Agent) shall be conclusive, absent manifest error.

Section 2.18. Taxes.

(a) Any and all payments by or on account of any obligation of the
Borrower hereunder shall be made free and clear of and without deduction for any Indemnified Taxes or Other Taxes; provided, that if the Borrower shall be required to deduct any Indemnified Taxes or Other Taxes from such payments, then
(i) the sum payable shall be increased as necessary so that after making all required deductions (including deductions applicable to additional sums payable under this Section 2.18) the Administrative Agent, any Lender or the
Issuing Bank (as the case may be) shall receive an amount equal to the sum it would have received had no such deductions been made, (ii) the Borrower shall make such deductions and (iii) the Borrower shall pay the full amount deducted to
the relevant Governmental Authority in accordance with applicable law.

(b) In addition, the Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

(c) The Borrower shall indemnify the Administrative Agent, each Lender
and the Issuing Bank, within five (5) Business Days after written demand therefor, for the full amount of any Indemnified Taxes or Other Taxes paid by the Administrative Agent, such Lender or the Issuing Bank, as the case may be, on or with
respect to any payment by or on account of any obligation of the Borrower hereunder (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to amounts payable under this Section 2.18) 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 Lender or the Issuing Bank, or by the Administrative Agent on its own behalf or on behalf of a Lender or the Issuing Bank, shall be conclusive absent manifest error.

(d) As soon as practicable after any payment of Indemnified Taxes or Other Taxes by the Borrower to a Governmental Authority, 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.

(e) Any Foreign Lender that is entitled to an exemption from or reduction of withholding tax under the Code or any
treaty to which the United States is a party, with respect to payments under this Agreement shall deliver to the Borrower (with a copy to the Administrative Agent), at the time or times prescribed by applicable law, such properly



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completed and executed documentation prescribed by applicable law or reasonably requested by the Borrower as will permit such payments to be made without
withholding or at a reduced rate. Without limiting the generality of the foregoing, each Foreign Lender agrees that it will deliver to the Administrative Agent and the Borrower (or in the case of a Participant, to the Lender from which the related
participation shall have been purchased), as appropriate, two (2) duly completed copies of (i) Internal Revenue Service Form W-8 ECI, or any successor form thereto, certifying that the payments received from the Borrower hereunder are
effectively connected with such Foreign Lenders conduct of a trade or business in the United States; or (ii) Internal Revenue Service Form W-8 BEN, or any successor form thereto, certifying that such Foreign Lender is entitled to benefits
under an income tax treaty to which the United States is a party which reduces the rate of withholding tax on payments of interest; or (iii) Internal Revenue Service Form W-8 BEN, or any successor form prescribed by the Internal Revenue
Service, together with a certificate (A) establishing that the payment to the Foreign Lender qualifies as portfolio interest exempt from U.S. withholding tax under Code section 871(h) or 881(c), and (B) stating that
(1) the Foreign Lender is not a bank for purposes of Code section 881(c)(3)(A), or the obligation of the Borrower hereunder is not, with respect to such Foreign Lender, a loan agreement entered into in the ordinary course of its trade or
business, within the meaning of that section; (2) the Foreign Lender is not a 10% shareholder of the Borrower within the meaning of Code section 871(h)(3) or 881(c)(3)(B); and (3) the Foreign Lender is not a controlled foreign corporation
that is related to the Borrower within the meaning of Code section 881(c)(3)(C); or (iv) such other Internal Revenue Service forms as may be applicable to the Foreign Lender, including Forms W-8 IMY or W-8 EXP. Each such Foreign Lender shall
deliver to the Borrower and the Administrative Agent such forms on or before the date that it becomes a party to this Agreement (or in the case of a Participant, on or before the date such Participant purchases the related participation). In
addition, each such Foreign Lender shall deliver such forms promptly upon the obsolescence or invalidity of any form previously delivered by such Foreign Lender. Each such Foreign Lender shall promptly notify the Borrower and the Administrative
Agent at any time that it determines that it is no longer in a position to provide any previously delivered certificate to the Borrower (or any other form of certification adopted by the Internal Revenue Service for such purpose).

Section 2.19.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, fees or reimbursement of LC Disbursements,
or of amounts payable under Sections 2.16, 2.17 or 2.18, or otherwise) prior to 12:00 noon (New York time) on the date when due, in immediately available funds, free and clear of any defenses, rights of set-off, counterclaim, or
withholding or deduction of taxes. 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 next succeeding Business Day for purposes of calculating interest thereon.
All such payments shall be made to the Administrative Agent at the Payment Office, except payments to be made directly to the Issuing Bank or Swingline Lender as expressly provided herein and except that payments pursuant to Sections 2.16,
2.17 and 2.18 and 10.3 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



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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
made 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.

(c) If any 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 Revolving Loans or participations in LC Disbursements or Swingline Loans that
would result in such Lender receiving payment of a greater proportion of the aggregate amount of its Revolving Loans and participations in LC Disbursements and Swingline Loans and accrued interest thereon than the proportion received by any other
Lender, then the Lender receiving such greater proportion shall purchase (for cash at face value) participations in the Revolving Loans and participations in LC Disbursements and Swingline Loans of other Lenders to the extent necessary so that the
benefit of all such payments shall be shared by the Lenders ratably in accordance with the aggregate amount of principal of and accrued interest on their respective Revolving Loans and participations in LC Disbursements and Swingline 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 paragraph 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 Lender as
consideration for the assignment of or sale of a participation in any of its Loans or participations in LC Disbursements or Swingline 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 the foregoing arrangements 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) Unless the Administrative Agent shall have received notice from the Borrower prior to the date on which any payment is due to the Administrative
Agent for the account of the Lenders or the Issuing Bank hereunder that the Borrower will not make such payment, the Administrative Agent may assume that the Borrower has made such payment on such date in accordance herewith and may, in reliance
upon such assumption, distribute to the Lenders or the Issuing Bank, as the case may be, the amount or amounts due. In such event, if the Borrower has not in fact made such payment, then each of the Lenders or the Issuing Bank, as the case may be,
severally agrees to repay to the Administrative Agent forthwith on demand the amount so distributed to such Lender or Issuing Bank with interest thereon, for each day from and including the date such amount is distributed to it to but excluding the
date of payment



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to the Administrative Agent, at 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.

(e) If any Lender shall fail to make any payment required to be made by it pursuant to
Section 2.4(b), 2.5(b), 2.19(d), 2.20(d) or (e) or 10.3(d), 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.

Section 2.20.Letters of Credit.

(a) At any time before the fifth Business Day prior to expiration of the Availability Period, the Issuing Bank, in reliance upon the agreements of the other Lenders pursuant to Section 2.20(d), agrees to
issue, at the request of the Borrower, Letters of Credit for the account of the Borrower or any of its Subsidiaries on the terms and conditions hereinafter set forth; provided, that (i) each Letter of Credit shall expire on the earlier
of (A) the date one year after the date of issuance of such Letter of Credit (or in the case of any renewal or extension thereof, one year after such renewal or extension) and (B) the date that is five (5) Business Days prior to the
Revolving Commitment Termination Date; (ii) each Letter of Credit shall be in a stated amount of at least $100,000; and (iii) the Borrower may not request any Letter of Credit, if, after giving effect to such issuance (A) the
aggregate LC Exposure would exceed the LC Commitment or (B) the aggregate Revolving Credit Exposure of all Lenders would exceed the Aggregate Revolving Commitment Amount. Each Lender shall be deemed to, and hereby irrevocably and
unconditionally agrees to, purchase from the Issuing Bank without recourse a participation in each Letter of Credit equal to such Lenders Pro Rata Share of the aggregate amount available to be drawn under such Letter of Credit on the date of
issuance with respect to all Letters of Credit. Each issuance of a Letter of Credit shall be deemed to utilize the Revolving Commitment of each Lender by an amount equal to the amount of such participation.

(b) To request the issuance of a Letter of Credit (or any amendment, renewal or extension of an outstanding Letter of Credit), the Borrower shall give
the Issuing Bank and the Administrative Agent irrevocable written notice at least three (3) Business Days prior to the requested date of such issuance specifying the date (which shall be a Business Day) such Letter of Credit is to be issued (or
amended, extended or renewed, as the case may be), the expiration date of such Letter of Credit, 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. In addition to the satisfaction of the conditions in Article III, the issuance of such Letter of Credit (or any amendment which increases the amount of such Letter of Credit) will be subject to the
further conditions that such Letter of Credit shall be in such form and contain such terms as the Issuing Bank shall approve and that the Borrower shall have executed and delivered any additional applications, agreements and instruments relating to
such Letter of Credit as the Issuing Bank shall reasonably require; provided, that in the event of any conflict between such applications, agreements or instruments and this Agreement, the terms of this Agreement shall control.



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(c) At least two Business Days prior to the issuance of any Letter of Credit, the Issuing Bank will
confirm with the Administrative Agent (by telephone or in writing) that the Administrative Agent has received such notice and if not, the Issuing Bank will provide the Administrative Agent with a copy thereof. Unless the Issuing Bank has received
notice from the Administrative Agent on or before the Business Day immediately preceding the date the Issuing Bank is to issue the requested Letter of Credit (1) directing the Issuing Bank not to issue the Letter of Credit because such issuance
is not then permitted hereunder because of the limitations set forth in Section 2.20(a) or that one or more conditions specified in Article III are not then satisfied, then, subject to the terms and conditions hereof, the Issuing
Bank shall, on the requested date, issue such Letter of Credit in accordance with the Issuing Banks usual and customary business practices.

(d) The Issuing Bank shall examine all documents purporting to represent a demand for payment under a Letter of Credit promptly following its receipt thereof. The Issuing Bank shall notify the Borrower and the Administrative Agent of such
demand for payment and whether the Issuing Bank has made or will make a LC Disbursement thereunder; provided, that any failure to give or delay in giving such notice shall not relieve the Borrower of its obligation to reimburse the Issuing
Bank and the Lenders with respect to such LC Disbursement. The Borrower shall be irrevocably and unconditionally obligated to reimburse the Issuing Bank for any LC Disbursements paid by the Issuing Bank in respect of such drawing, without
presentment, demand or other formalities of any kind. Unless the Borrower shall have notified the Issuing Bank and the Administrative Agent prior to 11:00 a.m. (New York time) on the Business Day immediately prior to the date on which such drawing
is honored that the Borrower intends to reimburse the Issuing Bank for the amount of such drawing in funds other than from the proceeds of Revolving Loans, the Borrower shall be deemed to have timely given a Notice of Revolving Borrowing to the
Administrative Agent requesting the Lenders to make a Base Rate Borrowing on the date on which such drawing is honored in an exact amount due to the Issuing Bank; provided, that for purposes solely of such Borrowing, the conditions precedents
set forth in Section 3.2 hereof shall not be applicable. The Administrative Agent shall notify the Lenders of such Borrowing in accordance with Section 2.3, and each Lender shall make the proceeds of its Base Rate Loan
included in such Borrowing available to the Administrative Agent for the account of the Issuing Bank in accordance with Section 2.5. The proceeds of such Borrowing shall be applied directly by the Administrative Agent to reimburse the
Issuing Bank for such LC Disbursement.

(e) If for any reason a Base Rate Borrowing may not be (as determined in the sole discretion of the
Administrative Agent), or is not, made in accordance with the foregoing provisions, then each Lender (other than the Issuing Bank) shall be obligated to fund the participation that such Lender purchased pursuant to subsection (a) in an amount
equal to its Pro Rata Share of such LC Disbursement on and as of the date which such Base Rate Borrowing should have occurred. Each Lenders obligation to fund its participation shall be absolute and unconditional and shall not be affected by
any circumstance, including without limitation (i) any setoff, counterclaim, recoupment, defense or other right that such Lender or any other Person may have against the Issuing Bank or any other Person for any reason whatsoever, (ii) the
existence of a Default or an Event of Default or the termination of the Aggregate Revolving Commitments, (iii) any adverse change in the condition (financial or otherwise) of the Borrower or any of its Subsidiaries, (iv) any breach of this
Agreement by the Borrower or any other



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Lender, (v) any amendment, renewal or extension of any Letter of Credit or (vi) any other circumstance, happening or event whatsoever, whether or
not similar to any of the foregoing. On the date that such participation is required to be funded, each Lender shall promptly transfer, in immediately available funds, the amount of its participation to the Administrative Agent for the account of
the Issuing Bank. Whenever, at any time after the Issuing Bank has received from any such Lender the funds for its participation in a LC Disbursement, the Issuing Bank (or the Administrative Agent on its behalf) receives any payment on account
thereof, the Administrative Agent or the Issuing Bank, as the case may be, will distribute to such Lender its Pro Rata Share of such payment; provided, that if such payment is required to be returned for any reason to the Borrower or to a trustee,
receiver, liquidator, custodian or similar official in any bankruptcy proceeding, such Lender will return to the Administrative Agent or the Issuing Bank any portion thereof previously distributed by the Administrative Agent or the Issuing Bank to
it.

(f) To the extent that any Lender shall fail to pay any amount required to be paid pursuant to paragraph (d) above on the due
date therefor, such Lender shall pay interest to the Issuing Bank (through the Administrative Agent) on such amount from such due date to the date such payment is made at a rate per annum equal to the Federal Funds Rate; provided, that if
such Lender shall fail to make such payment to the Issuing Bank within three (3) Business Days of such due date, then, retroactively to the due date, such Lender shall be obligated to pay interest on such amount at the rate set forth in
Section 2.11(c).

(g) If any Event of Default shall occur and be continuing, on the Business Day that the Borrower receives
notice from the Administrative Agent or the Required Lenders demanding the deposit of cash collateral pursuant to this paragraph, the Borrower shall deposit in an account with the Administrative Agent, in the name of the Administrative Agent and for
the benefit of the Issuing Bank and the Lenders, an amount in cash equal to the LC Exposure as of such date plus any accrued and unpaid fees thereon; provided, that the obligation to deposit such cash collateral shall become effective
immediately, and such deposit shall become immediately due and payable, without demand or notice of any kind, upon the occurrence of any Event of Default with respect to the Borrower described in clause (g) or (h) of
Section 8.1. Such deposit shall be held by the Administrative Agent as collateral for the payment and performance of the obligations of the Borrower under this Agreement. The Administrative Agent shall have exclusive dominion and
control, including the exclusive right of withdrawal, over such account. Borrower agrees to execute any documents and/or certificates to effectuate the intent of this paragraph. 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 the Borrowers risk and expense, such deposits shall not bear interest. Interest and 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 Bank for LC Disbursements for which it had not been reimbursed and to the extent so applied, shall be held for the satisfaction of the
reimbursement obligations of the Borrower for the LC Exposure at such time or, if the maturity of the Loans has been accelerated, with the consent of the Required Lenders, be applied to satisfy other obligations of the Borrower under this Agreement
and the other Loan Documents. If the Borrower is required to provide an amount of cash collateral hereunder as a result of the occurrence of an Event of Default, such amount (to the extent not so applied as aforesaid) shall be returned to the
Borrower within three Business Days after all Events of Default have been cured or waived.



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(h) Promptly following the end of each calendar quarter, the Issuing Bank shall deliver (through the
Administrative Agent) to each Lender and the Borrower a report describing the aggregate Letters of Credit outstanding at the end of such Fiscal Quarter. Upon the request of any Lender from time to time, the Issuing Bank shall deliver to such Lender
any other information reasonably requested by such Lender with respect to each Letter of Credit then outstanding.

(i) The Borrowers
obligation to reimburse LC Disbursements hereunder shall be absolute, unconditional and irrevocable and shall be performed strictly in accordance with the terms of this Agreement under all circumstances whatsoever and irrespective of any of the
following circumstances:

(i) Any lack of validity or enforceability of any Letter of Credit or this Agreement, or whether
any Letter of Credit was issued for the account of any Subsidiary of Borrower;

(ii) The existence of any claim, set-off,
defense or other right which the Borrower or any Subsidiary or Affiliate of the Borrower may have at any time against a beneficiary or any transferee of any Letter of Credit (or any Persons or entities for whom any such beneficiary or transferee may
be acting), any Lender (including the Issuing Bank) or any other Person, whether in connection with this Agreement or the Letter of Credit or any document related hereto or thereto or any unrelated transaction;

(iii) 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;

(iv) Payment by the Issuing Bank under a Letter of Credit
against presentation of a draft or other document to the Issuing Bank that does not comply with the terms of such Letter of Credit;

(v) Any other event or circumstance whatsoever, whether or not similar to any of the foregoing, that might, but for the provisions of this Section 2.20, constitute a legal or equitable discharge of, or provide a right of setoff
against, the Borrowers obligations hereunder; or

(vi) The existence of a Default or an Event of Default.

Neither the Administrative Agent, the Issuing Bank, the Lenders nor any Related Party of any of the foregoing 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 above), 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 the Issuing Bank; provided, that the foregoing shall not be construed to excuse the Issuing Bank from liability to the Borrower to the extent of any actual direct damages (as
opposed to special, indirect (including claims for lost profits or other



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consequential damages), or punitive damages, claims in respect of which are hereby waived by the Borrower to the extent permitted by applicable law) suffered
by the Borrower that are caused by the Issuing Banks failure to exercise due care when determining whether drafts or 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 the Issuing Bank (as finally determined by a court of competent jurisdiction), the Issuing Bank shall be deemed to have exercised due 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 that appear on their face to be in substantial compliance with the terms of a Letter of Credit, the 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.

(j) Each Letter of Credit shall be subject to the
Uniform Customs and Practice for Documentary Credits (1993 Revision), International Chamber of Commerce Publication No. 500, or the International Standby Practices (1998 Revision), International Chamber of Commerce Publication No. 590, in
each case as the same may be amended from time to time, and, to the extent not inconsistent therewith, the governing law of this Agreement set forth in Section 10.5.

(k) For all purposes of this Agreement, the letter of credit issued by SunTrust Bank, in its capacity as Issuing Bank under the existing Credit
Agreement, on May 2, 2006, for the account of the Borrower (formerly Northern Border Partners, L.P.) in favor of Western Gas Resources in the sum of $10,000,000, shall constitute a Letter of Credit issued pursuant to this
Section 2.20 of this Agreement effective as of the Restatement Date.

Section 2.21.Increase of Commitments;
Additional Lenders.

(a) So long as no Event of Default has occurred and is continuing, from time to time after the Restatement
Date, the Borrower may, upon at least 30 days written notice to the Administrative Agent and each of the Lenders that the Borrower selects for participation, propose to increase the Aggregate Revolving Commitments to an amount not to exceed
$1,000,000,000 (the amount of any such increase, the Additional Commitment Amount). The Borrower may also invite one or more Eligible Assignees to become additional Lenders for all or any part of the Additional Commitment Amount
provided that any new bank or financial institution must be reasonably acceptable to the Administrative Agent and shall execute a joinder agreement in form and substance satisfactory to the Administrative Agent. Each selected Lender (and Eligible
Assignee, if applicable) shall have the right for a period of 15 days following receipt of such notice, to elect by written notice to the Borrower and the Administrative Agent to increase its Revolving Commitment by a principal amount of the
Additional Commitment Amount as indicated in such notice. No Lender (or any successor thereto) shall have any obligation to increase its Revolving Commitment or its other obligations under this Agreement and the other Loan Documents, and any
decision by a Lender to increase its Revolving Commitment shall be made in its sole discretion independently from any other Lender.



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(b) If any Lender shall not elect to increase its Revolving Commitment pursuant to subsection (a) of
this Section 2.21, the Borrower may designate another bank or other financial institution (which may be, but need not be, one or more of the existing Lenders) which at the time agrees to, in the case of any such Person that is an
existing Lender, increase its Revolving Commitment and in the case of any other such Person (an Additional Lender), become a party to this Agreement; provided, however, that any new bank or financial institution must be
reasonably acceptable to the Administrative Agent. The sum of the increases in the Revolving Commitments of the existing Lenders pursuant to this subsection (b) plus the Revolving Commitments of the Additional Lenders shall not in the aggregate
exceed the unsubscribed amount of the Additional Commitment Amount.

(c) An increase in the Aggregate Revolving Commitments pursuant to
this Section 2.21 shall become effective upon the receipt by the Administrative Agent of an supplement or joinder in form and substance satisfactory to the Administrative Agent executed by the Borrower and by each Additional Lender and
by each other Lender whose Revolving Commitment is to be increased, setting forth the new Revolving Commitments of such Lenders and setting forth the agreement of each Additional Lender to become a party to this Agreement and to be bound by all the
terms and provisions hereof, together with Notes evidencing such increase in the Revolving Commitments, and such evidence of appropriate organizational authorization on the part of the Borrower with respect to the increase in the Revolving
Commitments and such opinions of counsel for the Borrower with respect to the increase in the Revolving Commitments as the Administrative Agent may reasonably request.

(d) Upon the acceptance of any such agreement by the Administrative Agent, the Aggregate Revolving Commitment Amount shall automatically be increased by the amount of the Revolving Commitments added through such
agreement and Schedule II shall automatically be deemed amended to reflect the Revolving Commitments of all Lenders after giving effect to the addition of such Revolving Commitments.

(e) Upon any increase in the Aggregate Revolving Commitments pursuant to this Section 2.21 that is not pro rata among all Lenders,
(x) within five Business Days, in the case of any Base Rate Loans then outstanding, and at the end of the then current Interest Period with respect thereto, in the case of any Eurodollar Loans then outstanding, the Borrower shall prepay such
Loans in their entirety and, to the extent the Borrower elects to do so and subject to the conditions specified in Article III, the Borrower shall reborrow Loans from the Lenders in proportion to their respective Revolving Commitments after
giving effect to such increase, until such time as all outstanding Loans are held by the Lenders in proportion to their respective Commitments after giving effect to such increase and (y) effective upon such increase, the amount of the
participations held by each Lender in each Letter of Credit then outstanding shall be adjusted automatically such that, after giving effect to such adjustments, the Lenders shall hold participations in each such Letter of Credit in proportion to
their respective Revolving Commitments.

Section 2.22. Mitigation of Obligations. If any Lender requests compensation
under Section 2.16, or if the Borrower is required to pay any additional amount to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 2.18, then such Lender shall use reasonable efforts
to designate a different lending office for



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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 sole
judgment of such Lender, such designation or assignment (i) would eliminate or reduce amounts payable under Section 2.16 or Section 2.18, 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. The Borrower hereby agrees to pay all costs and expenses incurred by any Lender in connection with such designation or assignment.

Section 2.23. Extension of Maturity Date.

(a) Requests for Extension. After the first anniversary of the Restatement Date, the Borrower may, by written notice to the Administrative Agent (who shall promptly notify the Lenders), not later than 45 days
prior to the Maturity Date then in effect hereunder (the Existing Maturity Date), request the Lenders to extend such Existing Maturity Date for an additional year. The Borrower shall not make any such request more than once during
any twelve month period or more than twice during the term of this Agreement. The date any such written request is received by the Administrative Agent is the Request Date, and such request shall specify the date (the
Extension Effective Date) such extension would become effective; provided that such Extension Effective Date must be a Business Day and shall be at least 45 days, and not more than 60 days, after the Request Date.

(b) Lender Elections to Extend. Each Lender, acting in its sole and individual discretion, shall, by notice to the Administrative
Agent given not later than 15 days after the Request Date (or such later date as the Borrower and Administrative Agent may agree), advise the Administrative Agent whether or not such Lender agrees to such extension. Each Lender that determines not
to so extend its Maturity Date, or that fails to advise the Administrative Agent as to its election under this Section 2.23(b), shall be a Non-Extending Lender for purposes of this Section. The Revolving Commitment of
each Non-Extending Lender shall be terminated on the Existing Maturity Date for such Lender (without regard to extensions by any other Lenders) and on such Existing Maturity Date the Borrower shall pay in full the unpaid principal amount of all
Loans owing to such Non-Extending Lender, together with all accrued and unpaid interest thereon and all fees accrued under this Agreement and unpaid to such date, and all other amounts then due to such Non-Extending Lender under this Agreement. The
election of any Lender to agree to such extension (each such Lender is herein called an Extending Lender) shall not obligate any other Lender to so agree.

(c) Notification by Administrative Agent. The Administrative Agent shall promptly notify the Borrower of each Lenders determination under
this Section and shall promptly notify the Extending Lenders of the aggregate Revolving Commitments of the Non-Extending Lenders.

(d)
Increased and Additional Commitments. Each Extending Lender may offer to increase its respective Revolving Commitment by an amount not to exceed the aggregate amount of the Non-Extending Lenders Revolving Commitments, and such Extending
Lender shall deliver to the Administrative Agent a notice of its offer to so increase its Revolving Commitment no later than 20 days after the Request Date (or such later date to which the Borrower and the Administrative Agent shall agree), and such
offer shall be irrevocable until the



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Extension Effective Date. To the extent the aggregate amount of additional Revolving Commitments that the Extending Lenders offer pursuant to the preceding
sentence exceeds the aggregate amount of the Non-Extending Lenders Revolving Commitments, such additional Revolving Commitments shall be reduced on a pro rata basis. To the extent the aggregate amount of Revolving Commitments
that the Extending Lenders have so offered to extend is less than the aggregate amount of the Revolving Commitments that the Borrower has so requested to be extended, the Borrower shall have the right but not the obligation to require any
Non-Extending Lender to (and any such Non-Extending Lender shall) assign in full its rights and obligations under this Agreement to one or more Extending Lenders or other banks or financial institutions qualifying as Eligible Assignees and otherwise
reasonably acceptable to the Administrative Agent, which at the time agree to, in the case of any Extending Lender, increase its Revolving Commitment, and in the case of any new Lender (each, an Additional Commitment Lender)
become a party to this Agreement; provided that (i) such assignment is otherwise in compliance with all requirements and provisions of Section 10.4(b), (ii) such Non-Extending Lender receives payment in full of the
unpaid principal amount of all Loans owing to such Non-Extending Lender, together with all accrued and unpaid interest thereon and all fees accrued under this Agreement and unpaid to such date, and all other amounts then due to such Non-Extending
Lender under this Agreement, and (iii) any such assignment shall be effective on the date on or before such Extension Effective Date as may be specified by the Borrower and agreed to by the respective Extending Lenders and Additional Commitment
Lenders, as the case may be, and the Administrative Agent.

(e) Minimum Extension Requirement. If (and only if) the total of the
Revolving Commitments of the Lenders that have agreed so to extend the then Existing Maturity Date and the additional Revolving Commitments of the Additional Commitment Lenders shall be more than 50% of the aggregate amount of the Revolving
Commitments in effect on the Request Date, then, effective as of the Extension Effective Date, the Maturity Date of each Extending Lender and of each such Additional Commitment Lender shall be extended to the date falling one year after the Existing
Maturity Date of each such Extending Lender (except that, if such date is not a Business Day, such Maturity Date as so extended shall be the next preceding Business Day) and each Additional Commitment Lender shall thereupon become a
Lender for all purposes of this Agreement.

(f) Conditions to Effectiveness of Extensions. Notwithstanding the
foregoing, the extension of the Maturity Date pursuant to this Section shall not be effective with respect to any Lender unless:

(i) no Default shall have occurred and be continuing on the date of such extension and after giving effect thereto;

(ii) the representations and warranties contained in this Agreement are true and correct on and as of the date of such extension and after giving effect thereto, as though made on and as of such date (or, if any such representation or
warranty is expressly stated to have been made as of a specific date, as of such specific date);

(iii) on the Maturity Date
applicable to each Non-Extending Lender, the Borrower shall prepay any Revolving Loans and Swingline Borrowings outstanding



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on such date, accrued interest thereon, accrued fees payable hereunder, and any additional amounts required pursuant to Section 2.17, to the
extent necessary to satisfy in full Obligations due to such Non-Extending Lender as of such date; and

(iv) on the Maturity
Date applicable to each Non-Extending Lender, the Borrower shall cash collateralize any existing Letters of Credit or make other credit accommodations satisfactory to the Issuing Bank with respect to such Letters of Credit to the extent that, after
giving effect to the prepayment required by the preceding clause (iii), the Revolving Credit Exposure exceeds the Revolving Commitments of the remaining Lenders.

ARTICLE III

CONDITIONS PRECEDENT TO LOANS AND LETTERS OF CREDIT

Section 3.1. Conditions To Effectiveness. This Agreement shall become effective, and the Lenders, the Swingline Lender and Issuing
Bank shall be obligated to make the initial Loans and issue the initial Letters of Credit hereunder, upon the satisfaction of the following conditions, in addition to the conditions precedent specified in Section 3.2:

(a) The Administrative Agent shall have received all fees and other amounts due and payable on or prior to the Restatement Date, including reimbursement
or payment of all out-of-pocket expenses (including reasonable fees, charges and disbursements of outside counsel to the Administrative Agent) required to be reimbursed or paid by the Borrower hereunder, under any other Loan Document and under any
agreement with the Administrative Agent or with SunTrust Robinson Humphrey or Wachovia Capital Markets, LLC, as Arrangers.

(b) The
Administrative Agent (or its counsel) shall have received the following:

(i) a counterpart of this Agreement signed by or
on behalf of each party hereto or written evidence satisfactory to the Administrative Agent (which may include telecopy transmission of a signed signature page of this Agreement) that such party has signed a counterpart of this Agreement;

(ii) a duly executed Revolving Credit Note payable to each Lender requesting the same and the Swingline Note payable to the
Swingline Lender;

(iii) the Guaranty Agreement duly executed by the Guarantor;

(iv) evidence that all outstanding Loans and all accrued interest, fees and expenses outstanding under the Existing Credit Agreement as of
the Restatement Date have been paid in full (including any amounts required by any Lenders, as a condition to the effectiveness of this Agreement, to be paid pursuant to Section 2.17 of the Existing Credit Agreement in connection with
such payment);



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(v) a certificate of the Secretary or Assistant Secretary of each Loan Party in the form
of Exhibit 3.1(b)(v), attaching and certifying copies of its bylaws and of the resolutions of its boards of directors, or partnership agreement or limited liability company agreement, or comparable organizational documents and authorizations,
authorizing the execution, delivery and performance of the Loan Documents to which it is a party and certifying the name, title and true signature of each officer of such Loan Party executing the Loan Documents to which it is a party;

(vi) certified copies of the articles or certificate of incorporation, certificate of organization or limited partnership, or other
registered organizational documents of each Loan Party, together with certificates of good standing or existence, as may be available from the Secretary of State of the jurisdiction of organization of such Loan Party and each other jurisdiction
where such Loan Party is required to be qualified to do business as a foreign limited partnership;

(vii) favorable written
opinions, addressed to the Administrative Agent and each of the Lenders, and covering such matters relating to the Loan Parties, the Loan Documents and the transactions contemplated therein as the Administrative Agent or the Required Lenders shall
reasonably request, of GableGotwals and Locke, Liddell & Sapp, each as counsel to the Borrower and Intermediate Partnership;

(viii) a certificate in the form of Exhibit 3.1(b)(viii), dated the Restatement Date and signed by a Responsible Officer, certifying that (x) no Default or Event of Default exists, (y) all
representations and warranties of each Loan Party set forth in the Loan Documents are true and correct and (z) since the date of the financial statements of the Borrower described in Section 4.4, there shall have been no change
which has had or could reasonably be expected to have a Material Adverse Effect;

(ix) a duly executed Notice of Borrowing;

(x) a duly executed funds disbursement letter, together with a report setting forth the sources and uses of the proceeds
hereof;

(xi) certified copies of all consents, approvals, authorizations, registrations and filings and orders required or
advisable to be made or obtained under any Requirement of Law, or by any Contractual Obligation of each Loan Party, in connection with the execution, delivery, performance, validity and enforceability of the Loan Documents or any of the transactions
contemplated thereby, and such consents, approvals, authorizations, registrations, filings and orders shall be in full force and effect and all applicable waiting periods shall have expired, and no investigation or inquiry by any governmental
authority regarding the Credit Facility or any transaction being financed with the proceeds thereof shall be ongoing; and

(xii) copies of the audited consolidated balance sheets and related statements of income, owners equity, and cash flows of the Borrower and its Subsidiaries for the Fiscal Years ending December 31, 2004, December 31,
2005 and December 31, 2006.



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Section 3.2. Each Credit Event. The obligation of each Lender to make a Loan on the
occasion of any Borrowing and of the Issuing Bank to issue, amend, renew or extend any Letter of Credit is subject to the satisfaction of the following conditions:

(a) at the time of and immediately after giving effect to such Borrowing or the issuance, amendment, renewal or extension of such Letter of Credit, as applicable, no Default or Event of Default shall exist;

(b) at the time of and immediately after giving effect to such Borrowing or the issuance, amendment, renewal or extension of such Letter
of Credit, as applicable, all representations and warranties of each Loan Party set forth in the Loan Documents shall be true and correct in all material respects on and as of the date of such Borrowing or the date of issuance, amendment, extension
or renewal of such Letter of Credit, in each case before and after giving effect thereto;

(c) the Borrower shall have delivered the
required Notice of Borrowing; and

(d) the Administrative Agent shall have received such other documents, certificates, information or
legal opinions as the Administrative Agent or the Required Lenders may reasonably request, all in form and substance reasonably satisfactory to the Administrative Agent or the Required Lenders and consistent with the terms of the Agreement.

Each Borrowing and each issuance, amendment, extension or renewal of any Letter of Credit shall be deemed to constitute a representation
and warranty by the Borrower on the date thereof as to the matters specified in paragraphs (a) and (b) of this Section 3.2.

Section 3.3. Delivery of Documents. All of the Loan Documents, certificates, legal opinions and other documents and papers referred to in this Article III, unless otherwise specified, shall be delivered to the
Administrative Agent for the account of each of the Lenders and, except for the Notes, in sufficient counterparts or copies for each of the Lenders and shall be in form and substance satisfactory in all respects to the Administrative Agent.

ARTICLE IV

REPRESENTATIONS AND WARRANTIES

The Borrower represents and warrants to the Administrative Agent and each Lender as
follows:

Section 4.1. Existence; Power. The Borrower and each of its Subsidiaries (i) is duly organized, validly
existing and in good standing as a corporation, partnership or limited liability company under the laws of the jurisdiction of its organization, (ii) has all requisite power and authority to carry on its business as now conducted, and
(iii) is duly qualified to do business, and is in good standing, in each jurisdiction where such qualification is required, except where a failure to be so qualified could not reasonably be expected to result in a Material Adverse Effect.



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Section 4.2.Organizational Power; Authorization. The execution, delivery and
performance by each Loan Party of the Loan Documents to which it is a party are within such Loan Partys organizational powers and have been duly authorized by all necessary organizational, and if required, shareholder, partner or member,
action. This Agreement has been duly executed and delivered by the Borrower, and constitutes, and each other Loan Document to which any Loan Party is a party, when executed and delivered by such Loan Party, will constitute, valid and binding
obligations of the Borrower or such Loan Party (as the case may be), enforceable against it in accordance with their respective terms, except as may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws
affecting the enforcement of creditors rights generally and by general principles of equity.

Section 4.3.Governmental Approvals; No Conflicts. The execution, delivery and performance by the Borrower of this Agreement, and by each Loan Party of the other Loan Documents to which it is a party (a) do not require any consent or
approval of, registration or filing with, or any action by, any Governmental Authority, except those as have been obtained or made and are in full force and effect, (b) will not violate any Requirements of Law applicable to the Borrower or any
of its Subsidiaries or any judgment, order or ruling of any Governmental Authority, (c) will not violate or result in a default under any indenture, agreement or other instrument binding on the Borrower or any of its Subsidiaries or any of its
assets or give rise to a right thereunder to require any payment to be made by the Borrower or any of its Subsidiaries, in each case other than violations, defaults or rights which could not reasonably expected to result in a Material Adverse
Effect, and (d) will not result in the creation or imposition of any Lien on any asset of the Borrower or any of its Subsidiaries, except Liens (if any) created under the Loan Documents.

Section 4.4.Financial Statements. The Borrower has furnished to each Lender the audited consolidated balance sheet of the
Borrower and its Subsidiaries as of December 31, 2006 and the related consolidated statements of income, owners equity and cash flows for the Fiscal Year then ended, together with the audit report of KPMG LLP or other independent public
accountants of nationally recognized standing. Such financial statements fairly present the consolidated financial condition of the Borrower and its Subsidiaries as of such dates and the consolidated results of operations for such periods in
conformity with GAAP consistently applied.

Section 4.5.Litigation and Environmental Matters.

(a) No litigation, investigation or proceeding of or before any arbitrators or Governmental Authorities is pending against or, to the knowledge of the
Borrower, threatened against or affecting the Borrower or any of its Subsidiaries (i) as to which there is a reasonable possibility of an adverse determination that could reasonably be expected to have, either individually or in the aggregate,
a Material Adverse Effect or (ii) which in any manner draws into question the validity or enforceability of this Agreement or any other Loan Document.

(b) Except for the matters set forth on Schedule 4.5(b), neither the Borrower nor any of its Subsidiaries (i) has failed to comply with any Environmental Law or to obtain, maintain or comply with any
permit, license or other approval required under any Environmental Law, (ii) has become subject to any Environmental Liability, (iii) has received notice of any



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claim with respect to any Environmental Liability or (iv) knows of any basis for any Environmental Liability, that, in each case, could reasonably be
expected to have, either individually or in the aggregate, a Material Adverse Effect.

Section 4.6.Compliance with Laws
and Agreements. The Borrower and each Subsidiary is in compliance with (a) all Requirements of Law and all judgments, decrees and orders of any Governmental Authority and (b) all indentures, agreements or other instruments binding
upon it or its properties, except where non-compliance, either singly or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

Section 4.7.Investment Company Act, Etc. Neither the Borrower nor any of its Subsidiaries is (a) an investment company or is controlled by an investment
company, as such terms are defined in, or subject to regulation under, the Investment Company Act of 1940, as amended, or (b) otherwise subject to any other regulatory scheme limiting its ability to incur debt or requiring any approval or
consent from or registration or filing with, any Governmental Authority in connection therewith.

Section 4.8.Taxes. The Borrower and its Subsidiaries and each other Person for whose taxes the Borrower or any Subsidiary could become liable have timely filed or caused to be filed, or received extensions of time for the filing of, all
Federal income tax returns and all other material tax returns that are required to be filed by them, and have paid all taxes shown to be due and payable on such returns or on any assessments made against it or its property and all other taxes, fees
or other charges imposed on it or any of its property by any Governmental Authority, except where the same are currently being contested in good faith by appropriate proceedings and for which the Borrower or such Subsidiary, as the case may be, has
set aside on its books adequate reserves in accordance with GAAP. The charges, accruals and reserves on the books of the Borrower and its Subsidiaries in respect of such taxes are adequate, and no tax liabilities that could be materially in excess
of the amount so provided are anticipated.

Section 4.9.Margin Regulations. None of the proceeds of any of the
Loans or Letters of Credit will be used, directly or indirectly, for purchasing or carrying any margin stock with the respective meanings of each of such terms under Regulation U of the Board of Governors of the
Federal Reserve System as now and from time to time hereafter in effect or for any purpose that violates the provisions of the Regulation U. Neither the Borrower nor its Subsidiaries 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.

Section 4.10.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, could reasonably be expected to result in a
Material Adverse Effect. The present value of all accumulated benefit obligations under each Plan (based on the assumptions used for purposes of Statement of Financial Standards No. 87) did not, as of the date of the most recent financial
statements reflecting such amounts, exceed the fair market value of the assets of such Plan, and the present value of all accumulated benefit obligations of all underfunded Plans (based on the assumptions used for purposes of Statement of Financial
Standards No. 87) did not, as of the date of the most recent financial statements reflecting such amounts, exceed the fair market value of the assets of all such underfunded Plans.



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Section 4.11. Ownership of Property.

(a) Each of the Borrower and its Subsidiaries has good title to, or valid leasehold or easement interests in, or the right to use, all of its real and
personal property material to the operation of its business, including all such properties reflected in the most recent audited consolidated balance sheet of the Borrower referred to in Section 4.4 or purported to have been acquired by
the Borrower or any Subsidiary after said date (except as sold or otherwise disposed of in the ordinary course of business), in each case free and clear of Liens prohibited by this Agreement, except to the extent that the failure to have such good
title, valid leasehold or easement interests or rights to use, or that such Liens exist, could not reasonably be expected to result in a Material Adverse Effect. All leases that individually or in the aggregate are material to the business or
operations of the Borrower and its Subsidiaries are valid and subsisting and are in full force, except to the extent that failure of such lease to be valid and subsisting could not reasonably be expected to result in a Material Adverse Effect.

(b) Each of the Borrower and its Subsidiaries owns, or is licensed, or otherwise has the right, to use, all patents, trademarks, service
marks, trade names, copyrights and other intellectual property material to its business, and the use thereof by the Borrower and its Subsidiaries does not infringe in any material respect on the rights of any other Person except to the extent that
the failure to do so could not reasonably be expected to result in a Material Adverse Effect.

(c) The properties of the Borrower and its
Subsidiaries are insured with financially sound and reputable insurance companies which are not Affiliates of the Borrower, in such amounts with such deductibles and covering such risks as are customarily carried by companies engaged in similar
businesses and owning similar properties in localities where the Borrower or any applicable Subsidiary operates.

Section 4.12.
Disclosure. The Borrower has disclosed to the Lenders all agreements, instruments, and corporate or other restrictions to which the Borrower or any of its Subsidiaries is subject, and all other matters known to any of them, that,
individually or in the aggregate, could reasonably be expected to result in a Material Adverse Effect. Neither the Information Memorandum nor any of the reports (including without limitation all reports that the Borrower is required to file with the
Securities and Exchange Commission), financial statements, certificates or other information furnished by or on behalf of the Borrower to the Administrative Agent or any Lender in connection with the negotiation or syndication of this Agreement or
any other Loan Document or delivered hereunder or thereunder (as modified or supplemented by any other information so furnished) contains any material misstatement of fact or omits to state any material fact necessary to make the statements therein,
in each case when taken as a whole, in light of the circumstances under which they were made, not misleading.

Section 4.13.
Labor Relations. There are no strikes, lockouts or other material labor disputes or grievances against the Borrower or any of its Subsidiaries, or, to the Borrowers knowledge, threatened against or affecting the Borrower or any of
its Subsidiaries, and no significant unfair labor practice, charges or grievances are pending against the Borrower or any of its Subsidiaries, or to the Borrowers knowledge, threatened against any of them before any Governmental Authority. All
payments due from the Borrower or any of its Subsidiaries



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pursuant to the provisions of any collective bargaining agreement have been paid or accrued as a liability on the books of the Borrower or any such
Subsidiary, except where the failure to do so could not reasonably be expected to have a Material Adverse Effect.

Section 4.14.
Subsidiaries. Schedule 4.14 sets forth the name of, the jurisdiction of incorporation or organization of, and the type of, each Subsidiary, in each case as of the Restatement Date.

Section 4.15. Insolvency. After giving effect to the execution and delivery of the Loan Documents, the making of the Loans under this
Agreement, neither the Borrower nor its Subsidiaries will be insolvent, within the meaning of such term as defined in § 101 of Title 11 of the United States Code, as amended from time to time, or be unable to pay its debts generally
as such debts become due, or have an unreasonably small capital to engage in any business or transaction, whether current or contemplated.

Section 4.16. OFAC. No Loan Party (i) is a person whose property or interest in property is blocked or subject to blocking pursuant to Section 1 of Executive Order 13224 of September 23, 2001 Blocking
Property and Prohibiting Transactions With Persons Who Commit, Threaten to Commit, or Support Terrorism (66 Fed. Reg. 49079 (2001)), (ii) engages in any dealings or transactions prohibited by Section 2 of such executive order, or is
otherwise associated with any such person in any manner violative of Section 2, or (iii) is a person on the list of Specially Designated Nationals and Blocked Persons or subject to the limitations or prohibitions under any other U.S.
Department of Treasurys Office of Foreign Assets Control regulation or executive order.

Section 4.17. Patriot
Act. Each Loan Party is in compliance, in all material respects, with (i) the Trading with the Enemy Act, as amended, and each of the foreign assets control regulations of the United States Treasury Department (31 CFR, Subtitle B,
Chapter V, as amended) and any other enabling legislation or executive order relating thereto, and (ii) the Uniting And Strengthening America By Providing Appropriate Tools Required To Intercept And Obstruct Terrorism (USA Patriot Act of 2001).
No part of the proceeds of the Loans will be used, directly or indirectly, 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 United States Foreign Corrupt Practices Act of 1977, as amended.

ARTICLE V

AFFIRMATIVE COVENANTS

The Borrower covenants and agrees that so long as any Lender has a Commitment hereunder or any Obligation remains unpaid or outstanding:

Section 5.1. Financial Statements and Other Information. The Borrower will deliver to the Administrative Agent and each Lender:



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(a) as soon as available and in any event within 120 days after the end of each Fiscal Year of Borrower,
a copy of the annual audited report for such Fiscal Year for the Borrower and its Subsidiaries, containing a consolidated balance sheet of the Borrower and its Subsidiaries as of the end of such Fiscal Year and the related consolidated statements of
income, stockholders equity and cash flows (together with all footnotes thereto) of the Borrower and its Subsidiaries for such Fiscal Year, setting forth in each case in comparative form the figures for the previous Fiscal Year, all in
reasonable detail and reported on by KPMG LLP or other independent public accountants of nationally recognized standing (without a going concern or like qualification, exception or explanation and without any qualification or exception
as to scope of such audit) to the effect that such financial statements present fairly in all material respects the financial condition and the results of operations of the Borrower and its Subsidiaries for such Fiscal Year on a consolidated and
consolidating basis in accordance with GAAP and that the examination by such accountants in connection with such consolidated financial statements has been made in accordance with generally accepted auditing standards;

(b) as soon as available and in any event within 60 days after the end of each Fiscal Quarter of the Borrower, an unaudited consolidated and
consolidating balance sheet of the Borrower and its Subsidiaries as of the end of such Fiscal Quarter and the related unaudited consolidated and consolidating statements of income and cash flows of the Borrower and its Subsidiaries for such Fiscal
Quarter and the then elapsed portion of such Fiscal Year, setting forth in each case in comparative form the figures for the corresponding quarter and the corresponding portion of Borrowers previous Fiscal Year;

(c) concurrently with the delivery of the financial statements referred to in clauses (a) and (b) above, a Compliance Certificate signed by a
Responsible Officer;

(d) concurrently with the delivery of the financial statements referred to in clauses (a) and (b) above, a
description of each Material Project commenced or in progress during the periods covered by such financial statements that has been approved the purpose of making Material Project EBITDA Adjustments, the current budget and scheduled completion date
for such Material Project, a description in reasonable detail as to the status of the construction and percentage completion of such Material Project as of the end of such periods, and such other information in respect of such Material Project as
the Administrative Agent or any Lender may reasonably request;

(e) promptly after the same become publicly available, copies of all
periodic and other reports, proxy statements and other materials filed with the Securities and Exchange Commission, or any Governmental Authority succeeding to any or all functions of said Commission;

(f) prior written notice of any Disposition of general partner interests in either the Borrower or the Intermediate Partnership by OKE, with respect to
the Borrower, or by the Borrower, with respect to the Intermediate Partnership, at a time when the aggregate general partner interests in the Borrower or the Intermediate Partnership owned by OKE or the Borrower, respectively, directly or indirectly
through any of their wholly owned Subsidiaries, together with the aggregate voting rights of OKE or the Borrower, respectively, with respect to the Borrower or the Intermediate Partnership, respectively, is less than (or which Disposition



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would result in such ownership being less than) fifty percent (50%) of the aggregate outstanding general partner interests and voting rights of all
general partners of either the Borrower or the Intermediate Partnership, together with such other information as may be reasonably necessary to demonstrate to the reasonable satisfaction of the Required Lenders that OKE and the Borrower, as
applicable, will retain control of the Borrower and the Intermediate Partnership, respectively, after giving effect to such Disposition; and

(g) promptly following any request therefor, such other information regarding the results of operations, business affairs and financial condition of the Borrower or any Subsidiary as the Administrative Agent or any Lender may reasonably
request.

Documents required to be delivered pursuant to Section 5.1(a), (b) or (e) (to the extent any such documents are included in
materials otherwise filed with the Securities and Exchange Commission or any successor thereto) may be delivered electronically and if so delivered, shall be deemed to have been delivered on the date (i) (A) after which the Borrower posts
such documents, or provides a link thereto on the Borrowers website on the Internet at www.oneok.com; or (B) after which such documents are posted on the Borrowers behalf on IntraLinks/IntraAgency or another relevant 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), and (ii) the Borrower notifies (which may be by facsimile or electronic mail) the
Administrative Agent and each Lender of the posting of any such documents; provided that the Borrower shall deliver paper copies or soft copies (by electronic mail) of such documents to the Administrative Agent or any Lender that requests the
Borrower to deliver such paper copies or soft copies until a written request to cease delivering paper copies or soft copies is given by the Administrative Agent or such Lender. Each Lender shall be solely responsible for requesting delivery to it
or maintaining its copies of such documents.

Section 5.2.Notices of Material Events. The Borrower will furnish
to the Administrative Agent prompt written notice of the following:

(a) the occurrence of any Default or Event of Default;

(b) the filing or commencement of any action, suit or proceeding by or before any arbitrator or Governmental Authority against or, to the knowledge of
the Borrower, affecting the Borrower or any Subsidiary which, if adversely determined, could reasonably be expected to result in a Material Adverse Effect;

(c) the occurrence of any event or any other development by which the Borrower or any of its Subsidiaries (i) fails to comply with any Environmental Law or to obtain, maintain or comply with any permit, license
or other approval required under any Environmental Law, (ii) becomes subject to any Environmental Liability, (iii) receives notice of any claim with respect to any Environmental Liability, or (iv) becomes aware of any basis for any
Environmental Liability and in each of the preceding clauses, which individually or in the aggregate, could reasonably be expected to result in a Material Adverse Effect;



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(d) the occurrence of any ERISA Event that alone, or together with any other ERISA Events that have
occurred, could reasonably be expected to result in liability of the Borrower and its Subsidiaries in an aggregate amount exceeding $15,000,000;

(e) the occurrence of any default or event of default, or the receipt by Borrower or any of its Subsidiaries of any written notice of an alleged default or event of default, respect of any Material Indebtedness of the
Borrower or any of its Subsidiaries; and

(f) any other development that results in, or could reasonably be expected to result in, a
Material Adverse Effect.

Each notice delivered under this Section 5.2 shall be accompanied by a written 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 5.3. Existence; Conduct of Business. The Borrower will, and will cause each of its Subsidiaries to, do or cause to be done all things necessary to preserve, renew and maintain in full force
and effect its legal existence and its respective rights, licenses, permits, privileges, franchises, patents, copyrights, trademarks and trade names material to the conduct of its business and will continue to engage in the same business as
presently conducted or such other businesses that are reasonably related thereto; provided, that nothing in this Section 5.3 shall prohibit any merger, consolidation, liquidation or dissolution permitted under
Section 7.3.

Section 5.4. Compliance with Laws, Etc. The Borrower will, and will cause each of its
Subsidiaries to, comply with all laws, rules, regulations and requirements of any Governmental Authority applicable to its business and properties, including without limitation, all Environmental Laws, ERISA and OSHA, except where the failure to do
so, either individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

Section 5.5.
Payment of Obligations. The Borrower will, and will cause each of its Subsidiaries to, pay and discharge at or before maturity, all of its material obligations and liabilities (including without limitation all tax liabilities and claims
that could result in a statutory Lien) before the same shall become delinquent or in default, except where (a) the validity or amount thereof is being contested in good faith by appropriate proceedings, (b) the Borrower or such Subsidiary
has set aside on its books adequate reserves with respect thereto in accordance with GAAP and (c) the failure to make payment pending such contest could not reasonably be expected to result in a Material Adverse Effect.

Section 5.6. Books and Records. The Borrower will, and will cause each of its Subsidiaries to, keep proper books of record and account in
which full, true and correct entries shall be made of all dealings and transactions in relation to its business and activities to the extent necessary to prepare the consolidated financial statements of Borrower in conformity with GAAP.

Section 5.7. Visitation, Inspection, Etc. The Borrower will, and will cause each of its Subsidiaries to, permit any representative
of the Administrative Agent or any Lender, to visit and inspect its properties, to examine its books and records and to make copies and take



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extracts therefrom, and to discuss its affairs, finances and accounts with any of its officers and with its independent certified public accountants, all at
such reasonable times and as often as the Administrative Agent or any Lender may reasonably request after reasonable prior notice to the Borrower; provided, however, if an Event of Default has occurred and is continuing, no prior notice shall
be required.

Section 5.8.Maintenance of Properties; Insurance. The Borrower will, and will cause each of its
Subsidiaries to, (a) maintain all property material to the conduct of its business in good working order and condition, ordinary wear and tear excepted and (b) maintain with financially sound and reputable insurance companies, insurance
with respect to its properties and business, and the properties and business of its Subsidiaries, against loss or damage of the kinds customarily insured against by companies in the same or similar businesses operating in the same or similar
locations.

Section 5.9.Use of Proceeds and Letters of Credit. The Borrower will use the proceeds of all Loans
to refinance existing indebtedness, to finance permitted acquisitions and investments, to pay related fees and expenses, and to provide for working capital needs and for other general business purposes of the Borrower and its Subsidiaries. No part
of the proceeds of any Loan will be used, whether directly or indirectly, for any purpose that would violate any rule or regulation of the Board of Governors of the Federal Reserve System, including Regulations T, U or X. All Letters of Credit will
be used for general business purposes.

Section 5.10.Pari Passu Status. Each Loan Party will
ensure the claims and rights of the Lenders against it under this Agreement and each other Loan Document will not be subordinate to, and will rank at all times at least pari passu with, all other unsecured Debt of such Loan Party.

Section 5.11.Maintenance of Tax Status. The Borrower shall take all action necessary to prevent the Borrower and
Intermediate Partnership from being, and will take no action which would have the effect of causing either of the Borrower or Intermediate Partnership to be, treated as an association taxable as a corporation or otherwise to be taxed as an entity
for federal income tax purposes.

ARTICLE VI

FINANCIAL COVENANT

The Borrower covenants and agrees that so long as any Lender has a
Commitment hereunder or any Obligation remains unpaid or outstanding:

Section 6.1.Leverage Ratio. The Borrower
will maintain at all times a Leverage Ratio of not greater than 5.00:1.00 (the Required Threshold); provided, however, that if the Borrower consummates one or more Acquisitions permitted hereunder in which the aggregate
purchase price of all such Acquisitions exceeds $25,000,000, then the Required Threshold shall be increased to 5.50:1.00 for the first three full fiscal reporting periods during any 12-month period immediately following the consummation of such
acquisitions.



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ARTICLE VII

NEGATIVE COVENANTS

The Borrower covenants and agrees that so long as any Lender has a
Commitment hereunder or any Obligation remains unpaid or outstanding:

Section 7.1. Indebtedness; Preferred Interests.
The Borrower will not permit any of its Subsidiaries to create, incur, assume or suffer to exist any Indebtedness, except:

(a) Indebtedness
of any Person that becomes a Subsidiary of the Borrower pursuant to an Acquisition, and Indebtedness of any Subsidiary resulting from the assumption by such Subsidiary of the Indebtedness of another Person pursuant to an Acquisition by such
Subsidiary, in each case together with any renewals, extensions or refinancings of such Indebtedness, provided that (i) such Indebtedness exists at the time of such Acquisition and is not incurred, created, drawn down or increased in
contemplation of or in connection with such Acquisition, and (ii) any renewal, extension or refinancing thereof is in an aggregate principal amount not greater than the principal amount of the Indebtedness being renewed, extended or refinanced,
and does not shorten the weighted average life to maturity of such Indebtedness;

(b) trade debt for goods furnished or services rendered
in the ordinary course of business and payable in accordance with customary trade terms that are not more than 90 days past due;

(c)
endorsements of checks or drafts in the ordinary course of business;

(d) to the extent Pipeline is a Subsidiary of the Borrower,
Indebtedness of Pipeline under the Pipeline Credit Agreement and other Indebtedness of Pipeline, so long as the Pipeline Leverage Ratio does not exceed 4.75:1.0 (the Pipeline Required Threshold); provided, however,
that if Pipeline consummates one or more acquisitions permitted hereunder in which the aggregate purchase price of all such acquisitions exceeds $25,000,000, then the Pipeline Required Threshold shall be increased to 5.50:1.00 for the first three
full fiscal reporting periods during any 12-month period immediately following the consummation of such acquisitions;

(e) other
Indebtedness of the Subsidiaries of the Borrower (excluding Indebtedness otherwise permitted in this Section 7.1) which does not exceed at any time an aggregate amount equal to ten percent (10%) of Consolidated Total Debt;

(f) Indebtedness of the Subsidiaries of the Borrower resulting from loans made by the Borrower to Intermediate Partnership, loans by
Intermediate Partnership to another Subsidiary or other loans by a Subsidiary to another Subsidiary; provided,however, that any Indebtedness of Intermediate Partnership resulting from loans made by any Subsidiary to
Intermediate Partnership shall be subordinated on terms and conditions satisfactory to Administrative Agent and the Required Lenders in right of payment to its obligations under the Guaranty Agreements;

(g) the guaranty by Intermediate Partnership of the Borrowers Indebtedness; and



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(h) Indebtedness of Guardian Pipeline, L.L.C. (Guardian) pursuant to the Master Shelf
Agreement and Revolving Note Agreement, each dated as of November 8, 2001, among Guardian, Prudential Insurance Company of America and the other parties thereto, in each case as amended from time to time (the Guardian
Agreements), together with any renewals, extensions or refinancings thereof, provided that any renewal, extension or refinancing thereof is not greater than the principal amount of the Indebtedness being renewed, extended or
refinanced, and does not shorten the weighted average life to maturity of such Indebtedness;

provided, however, no Indebtedness otherwise
permitted under this Section 7.1 shall be permitted if, after giving effect to the incurrence thereof, any Default or Event of Default shall have occurred and be continuing.

Borrower will not, and will not permit any Subsidiary to, issue any preferred shares or other preferred partnership, limited liability company or other
equity interests that (i) mature or are mandatorily redeemable prior to the first anniversary of the Maturity Date pursuant to a sinking fund obligation or otherwise, (ii) are or may become redeemable or repurchaseable by Borrower or such
Subsidiary prior to the first anniversary of the Maturity Date at the option of any holders thereof, in whole or in part, or (iii) are convertible or exchangeable at the option of any holders thereof for Indebtedness prior to the first
anniversary of the Maturity Date, or for preferred shares of a type described in clause (i) or (ii) above, or for or any other preferred partnership, limited liability company or other equity interests of a type described in clause
(i) or (ii) above.

Section 7.2.Negative Pledge. The Borrower will not, and will not permit any of its
Subsidiaries to, create, incur, assume or suffer to exist any Lien on any of its assets or property now owned or hereafter acquired other than Permitted Encumbrances.

Section 7.3.Fundamental Changes.

(a) The Borrower will not, and will not permit
any Subsidiary to, merge into or consolidate into any other Person, or permit any other Person to merge into or consolidate with it, or liquidate or dissolve, or sell, lease, transfer or otherwise Dispose of (in a single transaction or a series of
transactions) all or a Material Portion of the assets of the Borrower and its Subsidiaries taken as a whole; provided, that if at the time thereof and immediately after giving effect thereto, no Default or Event of Default shall have occurred
and be continuing, then (i) the Borrower or any Subsidiary may merge with a Person if the Borrower (or such Subsidiary if the Borrower is not a party to such merger) is the surviving Person, (ii) any Subsidiary may merge into another
Subsidiary; and (iii) any Subsidiary may sell, transfer, lease or otherwise Dispose of all or substantially all of its assets to the Borrower or to any other Subsidiary, and (iv) any Subsidiary (other than a Subsidiary Loan Party) may
liquidate or dissolve; provided, however, that in no event shall any such merger, consolidation, sale, transfer, lease or other Disposition whether or not otherwise permitted by this Section 7.3 have the effect of releasing
any Loan Party from any of its obligations and liabilities under this Agreement or the other Loan Documents.

(b) For purposes of
determining compliance with Section 7.03(a), in the event of a Disposition of assets by the Borrower or a Subsidiary, the assets being Disposed of by the



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Borrower or such Subsidiary shall be considered to constitute a Material Portion of the assets of the Borrower and its Subsidiaries taken as a
whole only if: (a) the aggregate book value of such assets being Disposed of, plus (b) the book value of all other assets Disposed of by the Borrower and Subsidiaries taken as a whole since the Restatement Date, minus (c) the
book value of all assets (other than cash and cash equivalents) acquired by the Borrower and Restricted Subsidiaries taken as a whole since the Restatement Date, is equal to or greater than One Billion One Hundred Million Dollars ($1.1 billion).

(c) The Borrower shall not (i) engage in any business activity except the ownership and management of capital stock (or in the case
of a partnership or limited liability company, the partners or members equivalent equity interest), whether common or preferred, obligations, and other securities of or interests in, its Subsidiaries and in joint ventures and other
Persons, in each case that are engaged principally in the business of purchasing, gathering, compression, transportation, distribution, marketing, or storage of natural gas, compressed natural gas and natural gas liquids, the exploration or
production of natural gas or oil or the processing or fractionation of natural gas or natural gas liquids, the underground piping of natural gas distribution systems, other businesses substantially related to any of the foregoing, the generation and
marketing of electricity and such other activities as may be substantially related or incidental thereto, or (ii) permit the Intermediate Partnership or any Subsidiaries of the Borrower or the Intermediate Partnership to engage, directly or
indirectly, in any material line of business substantially different from those lines of business conducted by the Borrower, the Intermediate Partnership and their respective Subsidiaries as of the Restatement Date and other businesses substantially
related or incidental thereto, provided that the gross income from such other activities and businesses allows the Borrower to meet the exception in Section 7704 of the Code.

Section 7.4. Investments, Loans, Etc. The Borrower will not, and will not permit any of its Subsidiaries to, purchase, hold or acquire
(including pursuant to any merger with any Person that was not a wholly-owned Subsidiary prior to such merger), any common stock, evidence of indebtedness or other securities (including any option, warrant, or other right to acquire any of the
foregoing) of, make or permit to exist any loans or advances to, Guarantee any obligations of, or make or permit to exist any investment or any other interest in, any other Person (all of the foregoing being collectively called
Investments), or purchase or otherwise acquire (in one transaction or a series of transactions) any assets of any other Person that constitute a business unit, except:

(a) Investments (other than Permitted Investments) existing on the date hereof and set forth on Schedule 7.4 (including Investments in
Subsidiaries);

(b) Permitted Investments;

(c) Guarantees constituting Indebtedness permitted by Section 7.1;

(d) loans or advances to
employees, officers or directors of the Borrower or any Subsidiary in the ordinary course of business for travel, relocation and related expenses; provided, however, that the aggregate amount of all such loans and advances does not exceed
$1,000,000 at any time;



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(e) Hedging Transactions permitted by Section 7.10;

(f) Investments in and through Intermediate Partnership permitted by Section 7.3(c); and

(g) Investments in the capital stock (or in the case of a partnership or limited liability company, the partners or members equivalent equity
interest), whether common or preferred, assets, obligations or other securities of, or interest in, (i) Subsidiaries of the Borrower, and (ii) joint ventures and other Persons that are not Subsidiaries of the Borrower up to an aggregate
amount of such Investments pursuant to this clause (ii) at any time not to exceed an amount equal to five percent (5%) of Consolidated Total Capitalization, in each case where such Subsidiaries, joint ventures and other Persons are engaged
principally in the business of the purchasing, gathering, compression, transportation, distribution, marketing, or storage of natural gas, compressed natural gas and natural gas liquids, the exploration or production of natural gas or oil or the
processing or fractionation of natural gas or natural gas liquids, the underground piping of natural gas distribution systems, other businesses substantially related to any of the foregoing, or the generation and marketing of electricity;
provided that such Investments are not opposed by the board of directors or management of such Person.

Section 7.5.Restricted Payments. The Borrower will not, and will not permit its Subsidiaries to, declare or make, or agree to pay or make, directly or indirectly, any dividend on any class of its Capital Stock, or make any payment on account
of, or set apart assets for a sinking or other analogous fund for, the purchase, redemption, retirement, defeasance or other acquisition of, any shares of Capital Stock or Indebtedness subordinated to the Obligations of the Borrower or any Guarantee
thereof or any options, warrants, or other rights to purchase such Capital Stock or such Indebtedness, whether now or hereafter outstanding (each, a Restricted Payment), except for (i) dividends payable by Subsidiaries of the
Borrower solely in shares of any class of its Capital Stock, (ii) Restricted Payments made by any Subsidiary to the Borrower or to another Subsidiary, on at least a pro rata basis with any other holders of its Capital Stock if such Subsidiary
is not wholly owned by the Borrower and other wholly owned Subsidiaries, (iii) distributions on the Limited Partnership Units and General Partners interests in accordance with the Borrower Partnership Agreement and (iv) so long as no
Event of Default has occurred and is continuing, repurchases of the Limited Partnership Interests.

Section 7.6.Burdensome Agreements. Enter into any Contractual Obligation that limits the ability of any Restricted Subsidiary to pay dividends or make other payments or distributions to the Borrower or to otherwise transfer property to the
Borrower; provided that the following shall not be deemed to violate the foregoing restriction: (i) any such Contractual Obligation of a Person existing at the time such Person is merged with or into or consolidated with or acquired, or
existing at the time of the acquisition of assets that are subject to such a Contractual Obligation, so long as such Contractual Obligation was not entered into in contemplation of, and was in existence prior to such merger, consolidation or
acquisition and does not extend to any assets other than those acquired or the assets of the Person merged into or consolidated that were subject to such Contractual Obligation prior to such merger, consolidation or acquisition; (ii) the
issuance by a master limited partnership of limited partnership interests with preferential distribution rights, and (iii) any restriction on the sale or transfer of assets imposed by the instruments and agreements governing the Indebtedness
incurred for the purpose



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of acquiring or constructing such assets and secured by such assets pursuant to a Permitted Encumbrance, or any renewal, extension or refinancing of such
Indebtedness in an aggregate amount not greater than the principal amount of the Indebtedness being renewed, extended or refinanced, provided that such restriction applies only to the assets so securing such Indebtedness.

Section 7.7. Transactions with Affiliates. Except as set forth in Schedule 7.7, the Borrower will not, and will not permit any
of its Subsidiaries to, sell, lease or otherwise transfer any property or assets to, or purchase, lease or otherwise acquire any property or assets from, or otherwise engage in any other transactions with, any of its Affiliates, except (a) at
prices and on terms and conditions not less favorable to the Borrower or such Subsidiary than could be obtained on an arms-length basis from unrelated third parties, (b) transactions between or among the Borrower and any other Loan Party
not involving any other Affiliates and (c) any Restricted Payment permitted by Section 7.5.

Section 7.8.
[Reserved].

Section 7.9. Government Regulations. No Loan Party will conduct its business in such a way that
it will become subject to regulation under the Investment Company Act of 1940, as amended, the Federal Power Act, as amended, or any other Law (other than Regulations T, U, and X of the Board of Governors of the Federal Reserve System) which
regulates the incurrence of Indebtedness.

Section 7.10. Hedging Transactions. The Borrower will not, and will not
permit any of the Subsidiaries to, enter into any Hedging Transaction, other than Hedging Transactions entered into in the ordinary course of business to hedge or mitigate risks to which the Borrower or any Subsidiary is exposed in the conduct of
its business or the management of its liabilities. Solely for the avoidance of doubt, the Borrower acknowledges that a Hedging Transaction entered into for speculative purposes or of a speculative nature (which shall be deemed to include any Hedging
Transaction under which the Borrower or any of the Subsidiaries is or may become obliged to make any payment (i) in connection with the purchase by any third party of any common stock or any Indebtedness or (ii) as a result of changes in
the market value of any common stock or any Indebtedness but shall be deemed to exclude any Hedging Transaction in which the Borrower hedges the issuance price of its Limited Partnership Units in connection with an anticipated offering of additional
Limited Partnership Units) is not a Hedging Transaction entered into in the ordinary course of business to hedge or mitigate risks.

Section 7.11. Accounting Changes. The Borrower will not, and will not permit any of its Subsidiaries to, make any significant change in accounting treatment or reporting practices, except as required by GAAP, or change
the fiscal year of the Borrower or of any of its Subsidiaries, except to change the fiscal year of a Subsidiary to conform its fiscal year to that of the Borrower.

Section 7.12. Restrictions on Agreements Governing Indebtedness. The Borrower will not, and will not permit any of its Subsidiaries to, enter into or otherwise become a party to any agreement
governing Indebtedness of the Borrower or such Subsidiary which contains any redemption or put rights with respect to such Indebtedness that may be exercised



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by any holders of such Indebtedness or any trustee, agent or other representative on behalf of such holders, except for the Senior Notes, the Senior Notes
Indentures and any Hybrid Securities permitted by this Agreement.

Section 7.13. Certain Amendments to Cash Distribution
Policies and Partnership Agreements. Each Loan Party agrees that it shall not consent to, vote in favor of or permit any amendment of (a) the cash distribution policies of Pipeline or Intermediate Partnership in any manner which would
result in a Material Adverse Effect with respect to any Loan Party or materially adversely affect the rights and remedies of Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (b) the Borrower
Partnership Agreement, the Pipeline Partnership Agreement or the Intermediate Partnership Agreement in any manner which would (i) have a material adverse effect on the rights and remedies of Lenders under and in connection with this Agreement,
the Notes or any other Loan Document; or (ii) result in a Material Adverse Effect.

ARTICLE VIII

EVENTS OF DEFAULT

Section 8.1. Events of Default. If any of the following events (each an Event of Default) shall occur:

(a) the Borrower shall fail to pay any principal of any Loan or of 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 or otherwise; or

(b) the Borrower shall fail to pay any interest on any Loan or any fee or any other amount (other than an
amount payable under clause (a) of this Section 8.1) payable under this Agreement or any other Loan Document, when and as the same shall become due and payable, and such failure shall continue unremedied for a period of five
(5) days; or

(c) any representation or warranty made or deemed made by or on behalf of the Borrower or any Subsidiary in or in
connection with this Agreement or any other Loan Document (including the Schedules attached thereto) and any amendments or modifications hereof or waivers hereunder, or in any certificate, report, financial statement or other document submitted to
the Administrative Agent or the Lenders by any Loan Party or any representative of any Loan Party pursuant to or in connection with this Agreement or any other Loan Document shall prove to be incorrect in any material respect when made or deemed
made or submitted; or

(d) the Borrower shall fail to observe or perform any covenant or agreement contained in Sections 5.1,
5.2, or 5.3 (with respect to the Borrowers existence) or Articles VI or VII; or

(e) any Loan Party shall
fail to observe or perform any covenant or agreement contained in this Agreement (other than those referred to in clauses (a), (b) and (d) above) or any



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other Loan Document, and such failure shall remain unremedied for 30 days after the earlier of (i) any officer of the Borrower becomes aware of such
failure, or (ii) notice thereof shall have been given to the Borrower by the Administrative Agent or any Lender; or

(f) the Borrower
or any Subsidiary (whether as primary obligor or as guarantor or other surety) shall fail to pay any principal of, or premium or interest on, any Material Indebtedness that is outstanding, when and as the same shall become due and payable (whether
at 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 evidencing or governing such Indebtedness; or any
other event shall occur or condition shall exist under any agreement or instrument relating to such Indebtedness and shall continue after the applicable grace period, if any, specified in such agreement or instrument, if the effect of such event or
condition is to accelerate, or permit the acceleration of, the maturity of such Indebtedness; or any such Indebtedness shall be declared to be due and payable, or required to be prepaid or redeemed (other than by a regularly scheduled required
prepayment or redemption), purchased or defeased, or any offer to prepay, redeem, purchase or defease such Indebtedness shall be required to be made, in each case prior to the stated maturity thereof; provided, that no Default will result from a
Rating Decline Offer (as such term is defined in the Senior Note Indentures), or the event causing such offer, under the Senior Notes or the election by one or more holders of Senior Note(s) to exercise its or their rights to have all or any portion
of their Senior Notes repurchased by the Borrower; or

(g) the Borrower or any Subsidiary shall (i) commence a voluntary case or other
proceeding or file any petition seeking liquidation, reorganization or other relief under any federal, state or foreign bankruptcy, insolvency or other similar law now or hereafter in effect or seeking the appointment of a custodian, trustee,
receiver, liquidator or other similar official of it or any substantial part of its property, (ii) consent to the institution of, or fail to contest in a timely and appropriate manner, any proceeding or petition described in clause (i) of
this Section 8.1, (iii) apply for or consent to the appointment of a custodian, trustee, receiver, liquidator or other similar official for the Borrower or any such Subsidiary or for a substantial part of its assets, (iv) file
an answer admitting the material allegations of a petition filed against it in any such proceeding, (v) make a general assignment for the benefit of creditors, or (vi) take any action for the purpose of effecting any of the foregoing; or

(h) 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 Subsidiary or its debts, or any substantial part of its assets, under any federal, state or foreign bankruptcy, insolvency or other similar law now or hereafter in effect or (ii) the appointment of
a custodian, trustee, receiver, liquidator or other similar official for the Borrower or any Subsidiary or for a substantial part of its assets, and in any such case, such proceeding or petition shall remain undismissed for a period of 60 days or an
order or decree approving or ordering any of the foregoing shall be entered; or

(i) the Borrower or any Subsidiary shall become unable to
pay, shall admit in writing its inability to pay, or shall fail to pay, its debts as they become due; or



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(j) an ERISA Event shall have occurred that, in the opinion of the Required Lenders, when taken together
with other ERISA Events that have occurred, could reasonably be expected to result in liability to the Borrower and the Subsidiaries in an aggregate amount exceeding the Threshold Amount; or

(k) any judgments or orders for the payment of money in excess of the Threshold Amount in the aggregate shall be rendered against the Borrower or any
Subsidiaries, and either (i) enforcement proceedings shall have been commenced by any creditor upon such judgments or orders or (ii) there shall be a period of 30 consecutive days during which a stay of enforcement of such judgments or
orders, by reason of a pending appeal or otherwise, shall not be in effect; or

(l) any non-monetary judgment or order shall be rendered
against the Borrower or any Subsidiary that could reasonably be expected to have a Material Adverse Effect, and there shall be a period of 30 consecutive days during which a stay of enforcement of such judgment or order, by reason of a pending
appeal or otherwise, shall not be in effect; or

(m) a Change in Control shall occur or exist; or

(n) any Loan Document shall, at any time after its execution and delivery and for any reason, cease to be in full force and effect in any material
respect or be declared to be null and void (other than in accordance with the terms hereof or thereof) or the validity or enforceability thereof be contested by any Loan Party thereto or any Loan Party shall deny in writing that it has any or any
further liability or obligations under any Loan Document to which it is a party; or

(o) any event or condition shall occur or exist with
respect to any activity or substance regulated under the Environmental Law and, as a result of such event or condition, any Loan Party or any of their respective Subsidiaries shall have incurred or in the opinion of the Required Lenders will be
reasonably likely to incur a liability in excess of the Threshold Amount during any consecutive twelve (12) month period; or

(p) any
Loan Party or, so long as Pipeline is a Subsidiary of the Borrower, Pipeline shall dissolve, liquidate, or otherwise terminate their existence, except, with respect to Pipeline, pursuant to Section 14 or Section 15 (to the extent it
applies to a merger pursuant to Section 14) of Pipelines Partnership Agreement; or

(q) any material provision of any Guaranty
Agreement shall for any reason cease to be valid and binding on, or enforceable against any Guarantor, or any Guarantor shall so state in writing, or any Guarantor shall seek to terminate its Guaranty Agreement; or

(r) so long as Pipeline is a Subsidiary of the Borrower, any Event of Default shall occur or exist under the terms of the Pipeline Credit
Agreement;

then, and in every such event (other than an event with respect to the Borrower described in clause (g) or (h) of
this Section 8.1) and at any time thereafter during the continuance of such event, the Administrative Agent may, and upon the written request of the Required Lenders shall, by notice to the Borrower, take any or all of the following
actions, at the



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same or different times: (i) terminate the Commitments, whereupon the Commitment of each Lender shall terminate immediately, (ii) declare the
principal of and any accrued interest on the Loans, and all other Obligations owing hereunder, to be, whereupon the same 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, (iii) exercise all remedies contained in any other Loan Document, and (iv) exercise any other remedies available at law or in equity; and that, if an Event of Default specified in either clause (g) or
(h) shall occur, the Commitments shall automatically terminate and the principal of the Loans then outstanding, together with accrued interest thereon, and all fees, and all other Obligations 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.

ARTICLE IX

THE ADMINISTRATIVE AGENT

Section 9.1. Appointment of Administrative Agent.

(a) Each Lender irrevocably appoints SunTrust Bank as the
Administrative Agent and authorizes it to take such actions on its behalf and to exercise such powers as are delegated to the Administrative Agent under this Agreement and the other Loan Documents, together with all such actions and powers that are
reasonably incidental thereto. The Administrative Agent may perform any of its duties hereunder or under the other Loan Documents by or through any one or more sub-agents or attorneys-in-fact appointed by the Administrative Agent. The Administrative
Agent and any such sub-agent or attorney-in-fact may perform any and all of its duties and exercise its rights and powers through their respective Related Parties. The exculpatory provisions set forth in this Article shall apply to any such
sub-agent or attorney-in-fact and the Related Parties of the Administrative Agent, any such sub-agent and any such attorney-in-fact and shall apply to their respective activities in connection with the syndication of the credit facilities provided
for herein as well as activities as Administrative Agent.

(b) The Issuing Bank shall act on behalf of the Lenders with respect to any
Letters of Credit issued by it and the documents associated therewith until such time and except for so long as the Administrative Agent may agree at the request of the Required Lenders to act for the Issuing Bank with respect thereto; provided,
that the Issuing Bank shall have all the benefits and immunities (i) provided to the Administrative Agent in this Article with respect to any acts taken or omissions suffered by the Issuing Bank in connection with Letters of Credit issued by it
or proposed to be issued by it and the application and agreements for letters of credit pertaining to the Letters of Credit as fully as if the term Administrative Agent as used in this Article included the Issuing Bank with respect to
such acts or omissions and (ii) as additionally provided in this Agreement with respect to the Issuing Bank.

Section 9.2.
Nature of Duties of Administrative Agent. The Administrative Agent shall not have any duties or obligations except those expressly set forth in this Agreement



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and the other Loan Documents. Without limiting the generality of the foregoing, (a) the Administrative Agent shall not be subject to any fiduciary or
other implied duties, regardless of whether a Default or an Event of Default has occurred and is continuing, (b) the Administrative Agent shall not have any duty to take any discretionary action or exercise any discretionary powers, except
those discretionary rights and powers expressly contemplated by the Loan Documents that the Administrative Agent is required to exercise in writing by the Required Lenders (or such other number or percentage of the Lenders as shall be necessary
under the circumstances as provided in Section 10.2), and (c) except as expressly set forth in the Loan Documents, the Administrative Agent shall not have any duty to disclose, and shall not be liable for the failure to disclose,
any information relating to the Borrower or any of its Subsidiaries that is communicated to or obtained by the Administrative Agent or any of its Affiliates in any capacity. The Administrative Agent shall not be liable for any action taken or not
taken by it, its sub-agents or attorneys-in-fact with the consent or at the request of the Required Lenders (or such other number or percentage of the Lenders as shall be necessary under the circumstances as provided in Section 10.2) or
in the absence of its own gross negligence or willful misconduct. The Administrative Agent shall not be responsible for the negligence or misconduct of any sub-agents or attorneys-in-fact selected by it with reasonable care. The Administrative Agent
shall not be deemed to have knowledge of any Default or Event of Default unless and until written notice thereof (which notice shall include an express reference to such event being a Default or Event of Default hereunder) is
given to the Administrative Agent by the Borrower or any Lender, and the Administrative Agent shall not be responsible for or have any duty to ascertain or inquire into (i) any statement, warranty or representation made in or in connection with
any Loan Document, (ii) the contents of any certificate, report or other document delivered hereunder or thereunder or in connection herewith or therewith, (iii) the performance or observance of any of the covenants, agreements, or other
terms and conditions set forth in any Loan Document, (iv) the validity, enforceability, effectiveness or genuineness of any Loan Document or any other agreement, instrument or document, or (v) the satisfaction of any condition set forth in
Article III or elsewhere in any Loan Document, other than to confirm receipt of items expressly required to be delivered to the Administrative Agent. The Administrative Agent may consult with legal counsel (including counsel for the Borrower)
concerning all matters pertaining to such duties.

Section 9.3. Lack of Reliance on the Administrative Agent. Each of
the Lenders, the Swingline Lender and the Issuing Bank acknowledges that it has, independently and without reliance upon the Administrative Agent or any other Lender and based on such documents and information as it has deemed appropriate, made its
own credit analysis and decision to enter into this Agreement. Each of the Lenders, the Swingline Lender and the Issuing Bank also acknowledges that it will, independently and without reliance upon the Administrative Agent or any other Lender and
based on such documents and information as it has deemed appropriate, continue to make its own decisions in taking or not taking of any action under or based on this Agreement, any related agreement or any document furnished hereunder or thereunder.

Section 9.4. Certain Rights of the Administrative Agent. If the Administrative Agent shall request instructions from
the Required Lenders with respect to any action or actions (including the failure to act) in connection with this Agreement, the Administrative Agent shall be entitled to refrain from such act or taking such act, unless and until it shall have
received instructions from such Lenders; and the Administrative Agent shall



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not incur liability to any Person by reason of so refraining. Without limiting the foregoing, no Lender shall have any right of action whatsoever against the
Administrative Agent as a result of the Administrative Agent acting or refraining from acting hereunder in accordance with the instructions of the Required Lenders where required by the terms of this Agreement.

Section 9.5.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 believed by it to be genuine and to have been signed, sent or made by the proper Person. The Administrative Agent may also rely
upon any statement made to it orally or by telephone and believed by it to be made by the proper Person and shall not incur any liability for relying thereon. The Administrative Agent may consult with legal counsel (including counsel for the
Borrower), independent public 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 such counsel, accountants or experts.

Section 9.6.The Administrative Agent in its Individual Capacity. The bank serving as the Administrative Agent shall have the
same rights and powers under this Agreement and any other Loan Document in its capacity as a Lender as any other Lender and may exercise or refrain from exercising the same as though it were not the Administrative Agent; and the terms
Lenders, Required Lenders, holders of Notes, or any similar terms shall, unless the context clearly otherwise indicates, include the Administrative Agent in its individual capacity. The bank acting as the
Administrative Agent and its Affiliates may accept deposits from, lend money to, and generally engage in any kind of business with the Borrower or any Subsidiary or Affiliate of the Borrower as if it were not the Administrative Agent hereunder.

Section 9.7.Successor Administrative Agent.

(a) The Administrative Agent may resign at any time by giving notice thereof to the Lenders and the Borrower. Upon any such resignation, the Required
Lenders shall have the right to appoint a successor Administrative Agent, subject to the approval by the Borrower provided that no Default or Event of Default shall exist at such time. If no successor Administrative Agent shall have been so
appointed, and shall have accepted such appointment within 30 days after the retiring Administrative Agent gives notice of resignation, then the retiring Administrative Agent may, on behalf of the Lenders and the Issuing Bank, appoint a successor
Administrative Agent, which shall be a commercial bank organized under the laws of the United States of America or any state thereof or a bank which maintains an office in the United States, having a combined capital and surplus of at least
$500,000,000.

(b) Upon the acceptance of its appointment as the Administrative Agent hereunder by a successor, such successor
Administrative Agent shall thereupon succeed to and become vested with all the rights, powers, privileges and duties of the retiring Administrative Agent, and the retiring Administrative Agent shall be discharged from its duties and obligations
under this Agreement and the other Loan Documents. If within 45 days after written notice is given of the retiring Administrative Agents resignation under this Section 9.7 no successor Administrative Agent shall have been appointed
and shall have accepted such appointment, then on such 45th day (i) the retiring Administrative Agents resignation shall become effective, (ii) the retiring Administrative Agent shall thereupon be discharged from its duties and
obligations



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under the Loan Documents and (iii) the Required Lenders shall thereafter perform all duties of the retiring Administrative Agent under the Loan
Documents until such time as the Required Lenders appoint a successor Administrative Agent as provided above. After any retiring Administrative Agents resignation hereunder, the provisions of this Article shall continue in effect for the
benefit of such retiring Administrative Agent and its representatives and agents in respect of any actions taken or not taken by any of them while it was serving as the Administrative Agent.

Section 9.8. Authorization to Execute other Loan Documents. Each Lender hereby authorizes the Administrative Agent to execute on
behalf of all Lenders all Loan Documents other than this Agreement.

Section 9.9. Syndication Agent and Co-Documentation
Agents. Each Lender hereby designates Wachovia Bank, National Association as Syndication Agent and agrees that the Syndication Agent shall have no duties or obligations under any Loan Documents to any Lender or any Loan Party. Each Lender
hereby designates BMO Capital Markets, Barclays Bank plc, and Citibank, N.A., as Co-Documentation Agents, and agrees that the Co-Documentation Agents shall have no duties or obligations under any Loan Documents to any Lender or any Loan Party.

ARTICLE X

MISCELLANEOUS

Section 10.1. Notices.

(a) Except in the case of notices and other communications expressly permitted to be given by telephone, all notices and other communications to any party
herein to be effective shall be in writing and shall be delivered by hand or overnight courier service, mailed by certified or registered mail or sent by telecopy, as follows:



|                 |  |                                                                                                                                                                        
|---------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
|To the Borrower: |  | ONEOK Partners, L.P. 100 West Fifth Street
Tulsa, OK 74103-2498 Attn: Curtis Dinan, Senior Vice President,
Chief Financial Officer and Treasurer Telecopy:
918-588-7971



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|                                                 |  |                                                                                                                                                            
|------------------------------------------------ |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                 | 
|with a copy to:                                  |  | ONEOK, Inc. 100 West Fifth Street Tulsa, OK 74103-2498 Attn: John R. Barker, Executive Vice
President, General Counsel and Secretary Telecopy:
918-588-7971
|                                                 | 
|To the Administrative Agent or Swingline Lender: |  | SunTrust Bank 303 Peachtree Street, N. E. Atlanta, Georgia 30308 Attn: Mr. David Edge Telecopy: (404) 827-6270                                             
|                                                 | 
|With a copy to:                                  |  | SunTrust Bank Agency Services 303 Peachtree Street, N.E., 25th Floor Atlanta, GA 30308 Attn: Ms. Dorris Folsom Telecopy: (404) 658-4906                    
|                                                 | 
|                                                 |  | and                                                                                                                                                        
|                                                 | 
|                                                 |  | King & Spalding LLP 1180 Peachtree Street,
NE Atlanta, GA 30309 Attn: Carolyn Z. Alford Telecopy: (404) 572-5128                                           
|                                                 | 
|To the Issuing Bank:                             |  | SunTrust Bank 25 Park Place, N.E., Mail Code
3706 Atlanta, GA 30303 Attn: John Conley Telecopy: (404) 588-8129                                             



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|                         |  |                                                                                                                                        
|------------------------ |  | ---------------------------------------------------------------------------------------------------------------------------------------
|                         | 
|To the Swingline Leader: |  | SunTrust Bank Agency Services 303 Peachtree Street, N.E., 25th Floor Atlanta, GA 30308 Attn: Ms. Dorris Folsum Telecopy: (404) 658-4906
|                         | 
|To any other Lender:     |  | the address set forth in the Administrative Questionnaire or the Assignment and Acceptance Agreement executed by such Lender           

Any party hereto may change its address or telecopy number for notices and other communications
hereunder by notice to the other parties hereto. All such notices and other communications shall, when transmitted by overnight delivery, or faxed, be effective when delivered for overnight (next-day) delivery, or transmitted in legible form by
facsimile machine, respectively, or if mailed, upon the third Business Day after the date deposited into the mail or if delivered, upon delivery; provided, that notices delivered to the Administrative Agent, the Issuing Bank or the Swingline Bank
shall not be effective until actually received by such Person at its address specified in this Section 10.1.

(b) Any agreement
of the Administrative Agent and the Lenders herein to receive certain notices by telephone or facsimile is solely for the convenience and at the request of the Borrower. The Administrative Agent and the Lenders shall be entitled to rely on the
authority of any Person purporting to be a Person authorized by the Borrower to give such notice and the Administrative Agent and Lenders shall not have any liability to the Borrower or other Person on account of any action taken or not taken by the
Administrative Agent or the Lenders in reliance upon such telephonic or facsimile notice. The obligation of the Borrower to repay the Loans and all other Obligations hereunder shall not be affected in any way or to any extent by any failure of the
Administrative Agent and the Lenders to receive written confirmation of any telephonic or facsimile notice or the receipt by the Administrative Agent and the Lenders of a confirmation which is at variance with the terms understood by the
Administrative Agent and the Lenders to be contained in any such telephonic or facsimile notice.

Section 10.2.Waiver;
Amendments.

(a) No failure or delay by the Administrative Agent, the Issuing Bank or any Lender in exercising any right or power
hereunder or any other Loan Document, and no course of dealing between the Borrower and the Administrative Agent or any Lender, 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 right or power, preclude any other or further exercise thereof or the exercise of any other right or power hereunder or thereunder. The rights and remedies of the Administrative Agent, the Issuing Bank and
the Lenders hereunder and under the other Loan Documents are cumulative and are not exclusive of any rights or remedies provided by law. No waiver of any provision of this Agreement or any other Loan



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Document 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 10.2, 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 the issuance of a Letter
of Credit shall not be construed as a waiver of any Default or Event of Default, regardless of whether the Administrative Agent, any Lender or the Issuing Bank may have had notice or knowledge of such Default or Event of Default at the time.

(b) No amendment or waiver of any provision of this Agreement or the other Loan Documents, nor consent to any departure by the Borrower
therefrom, shall in any event be effective unless the same shall be in writing and signed by the Borrower and the Required Lenders or the Borrower and the Administrative Agent with the consent of the Required Lenders and then such waiver or consent
shall be effective only in the specific instance and for the specific purpose for which given; provided, that no amendment or waiver shall: (i) increase the Commitment of any Lender without the written consent of such Lender,
(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 date fixed for
any payment of any principal of, or interest on, any Loan or LC Disbursement or interest thereon or any fees hereunder or reduce the amount of, waive or excuse any such payment, or postpone the scheduled date for the termination or reduction of any
Commitment, without the written consent of each Lender affected thereby, (iv) change Section 2.19(b) or (c) in a manner that would alter the pro rata sharing of payments required thereby, without the written consent of
each Lender or waive or amend any condition set forth in Section 3.1, (v) change any of the provisions of this Section 10.2 or the definition of Required Lenders or any other provision hereof specifying the
number or percentage of Lenders which are required to waive, amend or modify any rights hereunder or make any determination or grant any consent hereunder, without the consent of each Lender; (vi) release any guarantor or limit the liability of
any such guarantor under any guaranty agreement, without the written consent of each Lender; (vii) release all or substantially all collateral (if any) securing any of the Obligations, without the written consent of each Lender; provided
further, that no such agreement shall amend, modify or otherwise affect the rights, duties or obligations of the Administrative Agent, the Swingline Bank or the Issuing Bank without the prior written consent of such Person. Notwithstanding
anything contained herein to the contrary, this Agreement may be amended and restated without the consent of any Lender (but with the consent of the Borrower and the Administrative Agent) if, upon giving effect to such amendment and restatement,
such Lender shall no longer be a party to this Agreement (as so amended and restated), the Commitments of such Lender shall have terminated (but such Lender shall continue to be entitled to the benefits of Sections 2.16, 2.17,
2.18 and 10.3), such Lender shall have no other commitment or other obligation hereunder and shall have been paid in full all principal, interest and other amounts owing to it or accrued for its account under this Agreement.

Section 10.3.Expenses; Indemnification.

(a) The Borrower shall pay (i) all reasonable, out-of-pocket costs and expenses of the Administrative Agent, the Syndication Agent and their
Affiliates, including the reasonable fees, charges and disbursements of counsel for the Administrative Agent, the Syndication Agent and their Affiliates, in connection with the syndication of the credit facilities



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provided for herein, the preparation of the Loan Documents and any amendments, modifications or waivers thereof (whether or not the transactions contemplated
in this Agreement or any other Loan Document shall be consummated), (ii) all reasonable out-of-pocket expenses incurred by the Issuing Bank in connection with the issuance, amendment, renewal or extension of any Letter of Credit or any demand
for payment thereunder and (iii) all out-of-pocket costs and expenses (including, without limitation, the reasonable fees, charges and disbursements of outside counsel) incurred by the Administrative Agent, the Syndication Agent, the Issuing
Bank or any Lender in connection with the enforcement or protection of its rights in connection with this Agreement, including its rights under this Section 10.3, or in connection with the Loans made or any Letters of Credit issued
hereunder, including all such out-of-pocket expenses incurred during any workout, restructuring or negotiations in respect of such Loans or Letters of Credit.

(b) The Borrower shall indemnify the Administrative Agent (and any sub-agent thereof), each Lender and the Issuing Bank, and each Related Party of any of the foregoing Persons (each such Person being called an
Indemnitee) against, and hold each Indemnitee harmless from, any and all losses, claims, damages, liabilities and related expenses (including the fees, charges and disbursements of any counsel for any Indemnitee), and shall
indemnify and hold harmless each Indemnitee from all fees and time charges and disbursements for attorneys who may be employees of any Indemnitee, incurred by any Indemnitee or asserted against any Indemnitee by any third party or by the Borrower or
any other Loan Party arising out of, in connection with, or as a result of (i) the execution or delivery of this Agreement, any other Loan Document or any agreement or instrument contemplated hereby or thereby, the performance by the parties
hereto of their respective obligations hereunder or thereunder or the consummation of the transactions contemplated hereby or thereby, (ii) any Loan or Letter of Credit or the use or proposed use of the proceeds therefrom (including any refusal
by the Issuing Bank to honor a demand for payment under a Letter of Credit if the documents presented in connection with such demand do not strictly comply with the terms of such Letter of Credit), (iii) any actual or alleged presence or
Release of Hazardous Materials on or from any property owned or operated by the Borrower or any of its Subsidiaries, or any Environmental Liability related in any way to the Borrower or any of its Subsidiaries, or (iv) any actual or prospective
claim, litigation, investigation or proceeding relating to any of the foregoing, whether based on contract, tort or any other theory, whether brought by a third party or by the Borrower or any other Loan Party, and regardless of whether any
Indemnitee is a party thereto, provided that such indemnity shall not, as to any Indemnitee, be available to the extent that such losses, claims, damages, liabilities or related expenses (x) are determined by a court of competent
jurisdiction by final and nonappealable judgment to have resulted from the gross negligence or willful misconduct of such Indemnitee, (y) result from a claim brought by the Borrower or any other Loan Party against an Indemnitee for breach in
bad faith of such Indemnitees obligations hereunder or under any other Loan Document, if the Borrower or such Loan Party has obtained a final and nonappealable judgment in its favor on such claim as determined by a court of competent
jurisdiction or (z) result from a claim brought by one Indemnitee against another Indemnitee (other than the Administrative Agent, the Syndication Agent, the Swingline Lender or the Issuing Bank, in their capacities as such).

(c) The Borrower shall pay, and hold the Administrative Agent and each of the Lenders harmless from and against, any and all present and future stamp,
documentary, and other similar taxes with respect to this Agreement and any other Loan Documents, any collateral



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described therein, or any payments due thereunder, and save the Administrative Agent and each Lender harmless from and against any and all liabilities with
respect to or resulting from any delay or omission to pay such taxes.

(d) To the extent that the Borrower fails to pay any amount required
to be paid to the Administrative Agent, the Issuing Bank or the Swingline Lender under clauses (a), (b) or (c) hereof, each Lender severally agrees to pay to the Administrative Agent, the Issuing Bank or the Swingline Lender, as the case
may be, such Lenders Pro Rata Share (determined as of the time that the unreimbursed expense or indemnity payment is sought) of such unpaid amount; provided, that the unreimbursed expense or indemnified payment, claim, damage, liability
or related expense, as the case may be, was incurred by or asserted against the Administrative Agent, the Issuing Bank or the Swingline Lender in its capacity as such.

(e) To the extent permitted by applicable law, the Borrower shall not assert, and hereby waives, any claim against any Indemnitee, on any theory of liability, for special, indirect, consequential or punitive damages
(as opposed to actual or direct damages) arising out of, in connection with or as a result of, this Agreement or any agreement or instrument contemplated hereby, the transactions contemplated therein, any Loan or any Letter of Credit or the use of
proceeds thereof.

(f) All amounts due under this Section 10.3 shall be payable promptly after written demand therefor.

Section 10.4.Successors and Assigns.

(a) 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) 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:



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(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 Revolving Credit Exposure outstanding thereunder) or, if the applicable
Commitment is not then in effect, the principal outstanding balance of the Revolving Credit Exposure of the assigning Lender subject to each such assignment (determined as of the date the Assignment and Acceptance with respect to such assignment is
delivered to the Administrative Agent or, if Trade Date is specified in the Assignment and Acceptance, as of the Trade Date) shall not be less than $1,000,000, unless each of the Administrative Agent and, so long as no Event of Default
has occurred and is continuing, the Borrower 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 Revolving Credit Exposure
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 the Borrower (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 to a Person that is not a Lender with a Commitment; and

(C) the consent of the Issuing Bank (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 the consent of the
Swingline Lender (such consent not to be unreasonably withheld or delayed) shall be required for any assignment in respect of the Revolving Credit Commitments.

(iv) Assignment and Acceptance. The parties to each assignment shall deliver to the Administrative Agent (A) a duly executed
Assignment and Acceptance, (B) a processing and recordation fee of $3,000, (C) an Administrative Questionnaire unless



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the assignee is already a Lender and (D) the documents required under Section 2.18 if such assignee is a
Foreign Lender.

(v) No Assignment to Borrower. No such assignment shall be made to the Borrower or any of the
Borrowers Affiliates or Subsidiaries.

(vi) No Assignment to Natural Persons. No such assignment shall be made
to a natural person.

Subject to acceptance and recording thereof by the Administrative Agent pursuant to paragraph (c) of this
Section 10.4, from and after the effective date specified in each Assignment and Acceptance, the assignee thereunder shall be a party to this Agreement and, to the extent of the interest assigned by such Assignment and Acceptance, 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 Acceptance, be released from its obligations under this Agreement (and, in the case
of an Assignment and Acceptance 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 2.19,
2.20, 2.21 and 10.3 with respect to facts and circumstances occurring prior to the effective date of such assignment. Any assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with
this paragraph 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 10.4.

(c) The Administrative Agent, acting solely for this purpose as an agent of the Borrower, shall maintain at one of its offices in Atlanta, Georgia a copy
of each Assignment and Acceptance delivered to it and a register for the recordation of the names and addresses of the Lenders, and the Commitments of, and principal amount of the Revolving Credit Exposure owing to, 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, at any reasonable time and from time to time upon
reasonable prior notice.

(d) Any Lender may at any time, without the consent of, or notice to, the Borrower, the Administrative Agent, the
Swingline Bank or the Issuing Bank sell participations to any Person (other than a natural person, the Borrower or any of 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 parties hereto for the performance of such obligations and (iii) the Borrower, the Administrative Agent, the Lenders, Issuing Bank and Swingline Lender shall continue to deal
solely and directly with such Lender in connection with such Lenders rights and obligations under this Agreement.



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(e) 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 with respect to the following to the extent affecting such Participant: (i) increase the Commitment of any Lender without the written consent of such Lender,
(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 date fixed for
any payment of any principal of, or interest on, any Loan or LC Disbursement or interest thereon or any fees hereunder or reduce the amount of, waive or excuse any such payment, or postpone the scheduled date for the termination or reduction of any
Commitment, without the written consent of each Lender affected thereby, (iv) change Section 2.19(b) or (c) in a manner that would alter the pro rata sharing of payments required thereby, without the written consent of
each Lender, (v) change any of the provisions of this Section 10.4 or the definition of Required Lenders or any other provision hereof specifying the number or percentage of Lenders which are required to waive, amend or
modify any rights hereunder or make any determination or grant any consent hereunder, without the consent of each Lender; (vi) release any guarantor or limit the liability of any such guarantor under any guaranty agreement without the written
consent of each Lender except to the extent such release is expressly provided under the terms of the Guaranty Agreement; or (vii) release all or substantially all collateral (if any) securing any of the Obligations. Subject to paragraph
(e) of this Section 10.4, the Borrower agrees that each Participant shall be entitled to the benefits of Sections 2.16, 2.17, and 2.18 to the same extent as if it were a Lender and had acquired its interest by
assignment pursuant to paragraph (b) of this Section 10.4. To the extent permitted by law, each Participant also shall be entitled to the benefits of Section 10.7 as though it were a Lender, provided such Participant
agrees to be subject to Section 2.19 as though it were a Lender.

(f) A Participant shall not be entitled to receive any
greater payment under Section 2.16 and Section 2.18 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. A Participant that would be a Foreign Lender if it were a Lender shall not be entitled to the benefits of Section 2.18 unless the Borrower is notified of the
participation sold to such Participant and such Participant agrees, for the benefit of the Borrower, to comply with Section 2.18(e) as though it were a Lender.

(g) 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 without limitation any pledge or assignment to secure obligations to a Federal Reserve Bank; 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 10.5. Governing Law; Jurisdiction; Consent to Service of
Process.

(a) This Agreement and the other Loan Documents shall be construed in accordance with and be governed by the law (without
giving effect to the conflict of law principles thereof) of the State of New York.



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(b) The Borrower hereby irrevocably and unconditionally submits, for itself and its property, to the
non-exclusive jurisdiction of the United States District Court of the Southern District of New York, and of any state court of the State of Supreme Court of the State of New York sitting in New York county and any appellate court from any thereof,
in any action or proceeding arising out of or relating to this Agreement or any other Loan Document or the transactions contemplated hereby or thereby, 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 court or, to the extent permitted by applicable law, 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 or any other Loan Document shall
affect any right that the Administrative Agent, the Issuing Bank or any Lender may otherwise have to bring any action or proceeding relating to this Agreement or any other Loan Document against the Borrower or its properties in the courts of any
jurisdiction.

(c) The Borrower irrevocably and unconditionally waives any objection which it may now or hereafter have to the laying of
venue of any such suit, action or proceeding described in paragraph (b) of this Section 10.5 and brought in any court referred to in paragraph (b) of this Section 10.5. Each of the parties hereto irrevocably waives, to
the fullest extent permitted by applicable 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 the service of process in the manner provided for notices in Section 10.1. Nothing in this Agreement or in any other Loan Document will affect the
right of any party hereto to serve process in any other manner permitted by law.

Section 10.6.WAIVER OF JURY
TRIAL. EACH PARTY HERETO IRREVOCABLY 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 THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT
OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY (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 AND THE OTHER LOAN DOCUMENTS BY, AMONG OTHER
THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

Section 10.7.Right of Setoff. In addition to any
rights now or hereafter granted under applicable law and not by way of limitation of any such rights, each Lender and the Issuing Bank shall have the right, at any time or from time to time upon the occurrence and during the continuance of an Event
of Default, without prior notice to the Borrower, any such



80



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notice being expressly waived by the Borrower to the extent permitted by applicable law, to set off and apply against all deposits (general or special, time
or demand, provisional or final) of the Borrower at any time held or other obligations at any time owing by such Lender and the Issuing Bank to or for the credit or the account of the Borrower against any and all Obligations held by such Lender or
the Issuing Bank, as the case may be, irrespective of whether such Lender or the Issuing Bank shall have made demand hereunder and although such Obligations may be unmatured. Each Lender and the Issuing Bank agree promptly to notify the
Administrative Agent and the Borrower after any such set-off and any application made by such Lender and the Issuing Bank, as the case may be; provided, that the failure to give such notice shall not affect the validity of such set-off and
application.

Section 10.8. Counterparts; Integration. This Agreement may be executed by one or more of the parties to
this Agreement on any number of separate counterparts (including by telecopy), and all of said counterparts taken together shall be deemed to constitute one and the same instrument. This Agreement, the Fee Letter, the other Loan Documents, and any
separate letter agreement(s) relating to any fees payable to the Administrative Agent and the Co-Arrangers constitute the entire agreement among the parties hereto and thereto regarding the subject matters hereof and thereof and supersede all prior
agreements and understandings, oral or written, regarding such subject matters.

Section 10.9. 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 and issuance of any Letters of Credit, regardless of any investigation made by any such other party or on its behalf and notwithstanding that the
Administrative Agent, the Issuing Bank or any Lender may have had notice or knowledge of any Default or incorrect representation or warranty at the time any credit is extended hereunder, 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 Commitments have not expired or terminated. The
provisions of Sections 2.16, 2.17, 2.18, and 10.3 and Article IX 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 Commitments or the termination of this Agreement or any provision hereof as the case may be. All representations and warranties made herein, in the certificates, reports, notices, and
other documents delivered pursuant to this Agreement shall survive the execution and delivery of this Agreement and the other Loan Documents, and the making of the Loans and the issuance of the Letters of Credit.

Section 10.10. Severability. Any provision of this Agreement or any other Loan Document held to be illegal, invalid or unenforceable
in any jurisdiction, shall, as to such jurisdiction, be ineffective to the extent of such illegality, invalidity or unenforceability without affecting the legality, validity or enforceability of the remaining provisions hereof or thereof; and the
illegality, invalidity or unenforceability of a particular provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.



81



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Section 10.11.Confidentiality. Each of the Administrative Agent, the Issuing
Bank and each Lender agrees to take normal and reasonable precautions to maintain the confidentiality of any information designated in writing as confidential and provided to it by the Borrower or any Subsidiary, except that such information may be
disclosed (i) to any Related Party of the Administrative Agent, the Issuing Bank or any such Lender, including without limitation accountants, legal counsel and other advisors, (ii) to the extent required by applicable laws or regulations
or by any subpoena or similar legal process, (iii) to the extent requested by any regulatory agency or authority, (iv) to the extent that such information becomes publicly available other than as a result of a breach of this
Section 10.11, or which becomes available to the Administrative Agent, the Issuing Bank, any Lender or any Related Party of any of the foregoing on a nonconfidential basis from a source other than the Borrower, (v) in connection
with the exercise of any remedy hereunder or any suit, action or proceeding relating to this Agreement or the enforcement of rights hereunder, and (ix) subject to provisions substantially similar to this Section 10.11, to any actual
or prospective assignee or Participant, or (vi) with the consent of the Borrower. Any Person required to maintain the confidentiality of any information as provided for in this Section 10.11 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 its own confidential information.

Section 10.12.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 may be treated as interest on such Loan under applicable law (collectively, the Charges), shall exceed the maximum lawful rate of interest (the
Maximum Rate) which may be contracted for, charged, taken, received or reserved by a 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 10.12 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 with interest
thereon at the Federal Funds Rate to the date of repayment, shall have been received by such Lender.

Section 10.13.Waiver of Effect of Seal. The Borrower represents and warrants that neither it nor any other Loan Party is required to affix any seal to this Agreement or any other Loan Document pursuant to any Requirement of Law or regulation,
agrees that this Agreement is delivered by Borrower under seal and waives any shortening of the statute of limitations that may result from not affixing any seal to this Agreement or such other Loan Documents.

Section 10.14.Patriot Act. The Administrative Agent and each Lender hereby notifies the Loan Parties that pursuant to the
requirements of the USA PATRIOT Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)) (the Patriot Act), it is required to obtain, verify and record information that identifies each Loan Party, which information
includes the name and address of such Loan Party and other information that will allow such Lender or the Administrative Agent, as applicable, to identify such Loan Party in accordance with the Patriot Act. Each Loan Party shall, and shall cause
each of its Subsidiaries to, provide to the extent



82



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commercially reasonable, such information and take such other actions as are reasonably requested by the Administrative Agent or any Lender in order to
assist the Administrative Agent and the Lenders in maintaining compliance with the Patriot Act.

Section 10.15. No General
Partner Liability. The Administrative Agent and Lenders agree for themselves and their respective successors, participants and assigns, including any subsequent holder of any Note, that any claim against Borrower which may arise under any
Loan Document shall be made only against and shall be limited to the assets of Borrower, except to the extent any general partner of the Borrower may have obligations with respect to such claim pursuant to the terms of its Guaranty Agreement, if
any, and that no judgment, order or execution entered in any suit, action or proceeding, whether legal or equitable, on this Agreement, such Note or any of the other Loan Documents shall be obtained or enforced against any general partner of the
Borrower or its assets for the purpose of obtaining satisfaction and payment of such Note, the Obligations evidenced thereby, any other Obligation or any claims arising thereunder or under this Agreement or any other Loan Document, any right to
proceed against any general partner of the Borrower individually or their respective representatives or assets being hereby expressly waived, renounced and remitted by the Administrative Agent and Lenders for themselves and their respective
successors, participants and assigns. Nothing in this Section 10.15, however, shall be construed so as to prevent the Administrative Agent, any Lender or any other holder of any Note from commencing any action, suit or proceeding with
respect to or causing legal papers to be served upon any general partner of the Borrower for the purpose of obtaining jurisdiction over Borrower.

Section 10.16. Amendment and Restatement. This Agreement constitutes an amendment and restatement of the Existing Credit Agreement and is not, and is not intended by the parties to be, a novation of the Existing Credit
Agreement. All rights and obligations of the parties shall continue in effect, except as otherwise expressly set forth herein. Without limiting the foregoing, no Default or Event of Default existing under the Existing Credit Agreement as of the
Restatement Date shall be deemed waived or cured by this amendment and restatement thereof. On the Restatement Date, any and all Loans outstanding under the Existing Credit Agreement, together with all accrued and unpaid interest, fees, and other
expenses and amounts payable by the Borrower under the Existing Credit Agreement, shall be paid in full to the Lenders under the Existing Credit Agreement, the Issuing Bank, and the Administrative Agent, and the Revolving Commitments of
those Lenders under the Existing Credit Agreement that are not continuing as Lenders under this Agreement shall automatically terminate and cease to be of any force or effect without further action on the part of any party. The Revolving
Commitments of the Lenders under this Agreement after giving effect to this amendment and restatement are set forth on the respective signature pages for such Lenders hereinafter set forth. On and after the Restatement Date, all Loans and other
extensions of credit shall be made by the Lenders under this Agreement in accordance with their respective Pro Rata Shares of the Revolving Commitments as in effect from time to time. All references in the other Loan Documents to the Credit
Agreement shall be deemed to refer to and mean this Amended and Restated Revolving Credit Agreement, as the same may be further amended, supplemented, and restated from time to time.

(remainder of page left intentionally blank)



83



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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.



ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general partnerBy:

/s/ Curtis DinanName:

Curtis DinanTitle:

Senior Vice President, Chief Financial Officer and
Treasurer


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

SUNTRUST BANK as Administrative Agent, as Issuing Bank, as Swingline Lender and as a LenderBy:

/s/ Peter PanosName:

Peter PanosTitle:

Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

WACHOVIA BANK, NATIONAL ASSOCIATION as Syndication Agent and as a LenderBy:

/s/ Shannan TownsendName:

Shannan TownsendTitle:

Director


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

CITIBANK, N.A., as a LenderBy:

/s/ Todd MogilName:

Todd MogilTitle:

Attorney-in-Fact


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

BMO CAPITAL MARKETS FINANCING, INC., as a LenderBy:

/s/ Cahal CarmodyName:

Cahal CarmodyTitle:

Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

UBS LOAN FINANCE, LLC, as a LenderBy:

/s/ Richard L. TavrowName:

Richard L. TavrowTitle:

DirectorBy:

/s/ Irja R. OtsaName:

Irja R. OtsaTitle:

Associate Director


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

BANK OF AMERICA, NA, as a LenderBy:

/s/ Gabriela MillhornName:

Gabriela MillhornTitle:

Senior Vice-President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

BARCLAYS BANK PLC, as a LenderBy:

/s/ Nicholas BellName:

Nicholas BellTitle:

Director


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

THE ROYAL BANK OF SCOTLAND PLC, as a LenderBy:

/s/ John PreeceName:

John PreeceTitle:

Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

ROYAL BANK OF CANADA, as a LenderBy:

/s/ David A. McCluskeyName:

David A. McCluskeyTitle:

Authorized Signatory


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

WELLS FARGO BANK, N.A., as a LenderBy:

/s/ Sushim ShahName:

Sushim ShahTitle:

Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

MIZUHO CORPORATE BANK, LTD., as a LenderBy:

/s/ Leon MoName:

Leon MoTitle:

Senior Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

BNP PARIBAS, as a LenderBy:

/s/ Larry RobinsonName:

Larry RobinsonTitle:

DirectorBy:

/s/ Greg SmothersName:

Greg SmothersTitle:

Vice President


[SIGNATURE PAGE TO THE ONEOK PARTNERS, L.P.

AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]



---

Schedule I

APPLICABLE MARGIN AND APPLICABLE PERCENTAGE



|             |  |                            |  |                                     |  |                                    |  |                                      |  |                                        
|------------ |  | -------------------------- |  | ----------------------------------- |  | ---------------------------------- |  | ------------------------------------ |  | ---------------------------------------
|PricingLevel |  | Debt RatingCategory        |  | ApplicableMargin forEurodollarLoans |  | ApplicableMargin forBase RateLoans |  | ApplicablePercentage forFacility Fee |  | ApplicablePercentage forUtilization Fee
|I            |  | A-or higher/A3 or higher   |  | 0.200% per annum                    |  | 0.000% per annum                   |  | 0.050% per annum                     |  | 0.050% per annum                       
|             |  |                            |  |                                     | 
|II           |  | BBB+/Baa1                  |  | 0.230% per annum                    |  | 0.000% per annum                   |  | 0.070% per annum                     |  | 0.050% per annum                       
|             |  |                            |  |                                     | 
|III          |  | BBB/Baa2                   |  | 0.310% per annum                    |  | 0.000% per annum                   |  | 0.090% per annum                     |  | 0.050% per annum                       
|             |  |                            |  |                                     | 
|IV           |  | BBB-/Baa3                  |  | 0.440% per annum                    |  | 0.000% per annum                   |  | 0.110% per annum                     |  | 0.100% per annum                       
|             |  |                            |  |                                     | 
|V            |  | BB+ or lower/ Ba1 or lower |  | 0.575% per annum                    |  | 0.000% per annum                   |  | 0.125% per annum                     |  | 0.100% per annum                       

The Debt Ratings in effect on any date is that in effect at the close of business on such date. If
the Borrower is split-rated and (1) the ratings differential is one category, the higher of the two ratings will apply (e.g., A-/Baa1 results in Level I status) (2) the ratings differential is two categories, the rating which falls between
them shall apply (e.g., A-/Baa2, then the rate would be based on Level II status) or (3) the ratings differential is more than two category, the rate shall be determined by reference to the category next above that of the lower of the two
ratings (e.g., A-/Baa3, then the rate would be based on Level III status). If the Borrower is not rated by either Moodys or S&P, then the rate shall be established by reference to Level V.

If the rating system of Moodys or S&P shall change, or if either rating agency shall cease to be in the business of rating corporate debt
obligations, the Borrower, the Lenders and the Administrative Agent shall negotiate in good faith to amend this Schedule 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 Margin and the Applicable Percentage shall be determined by reference to the rating most recently in effect prior to any such change or cessation. If after a reasonable time the parties cannot agree to a mutually
acceptable amendment, the Applicable Margin and the Applicable Percentage shall be determined by reference to Level V.



Schedule I



---

Schedule II

COMMITMENT AMOUNTS



|                                    |  |                           |             |                |             |  
|----------------------------------- |  | ------------------------- | ----------- | -------------- | ----------- | -
|Lender                              |  | RevolvingCommitmentAmount |             | Pro Rata Share |            
|SunTrust Bank                       |  | $                         | 80,000,000  |                | 10.66666667 | %
|                                    |  |                          
|Wachovia Bank, National Association |  | $                         | 80,000,000  |                | 10.66666667 | %
|                                    |  |                          
|Citibank, N.A.                      |  | $                         | 80,000,000  |                | 10.66666667 | %
|                                    |  |                          
|BMO Capital Markets Financing, Inc. |  | $                         | 65,000,000  |                | 8.66666667  | %
|                                    |  |                          
|UBS Loan Finance LLC                |  | $                         | 65,000,000  |                | 8.66666667  | %
|                                    |  |                          
|Bank of America, N.A.               |  | $                         | 65,000,000  |                | 8.66666667  | %
|                                    |  |                          
|Barclays Bank plc                   |  | $                         | 65,000,000  |                | 8.66666667  | %
|                                    |  |                          
|The Royal Bank of Scotland plc      |  | $                         | 65,000,000  |                | 8.66666667  | %
|                                    |  |                          
|Royal Bank of Canada                |  | $                         | 46,250,000  |                | 6.16666667  | %
|                                    |  |                          
|Wells Fargo Bank, N.A.              |  | $                         | 46,250,000  |                | 6.16666667  | %
|                                    |  |                          
|Mizuho Corporate Bank, Ltd.         |  | $                         | 46,250,000  |                | 6.16666667  | %
|                                    |  |                          
|BNP Paribas                         |  | $                         | 46,250,000  |                | 6.16666667  | %
|                                    |  |                          
|TOTAL                               |  | $                         | 750,000,000 |                |             |  



Schedule II



---

SCHEDULE 4.5(b)

ENVIRONMENTAL MATTERS

NONE



Schedule 4.5(b)



---

SCHEDULE 4.14

SUBSIDIARIES



|                                                             |  |                                     
|------------------------------------------------------------ |  | ------------------------------------
|Subsidiaries of ONEOK Partners, L.P.                         |  | State
ofIncorporationor Organization
|ONEOK Partners Intermediate Limited Partnership              |  | Delaware                            
|ONEOK ILP GP, L.L.C.                                         |  | Delaware                            
|Bear Paw Investments, LLC                                    |  | Delaware                            
|Bear Paw Energy, LLC                                         |  | Delaware                            
|Bear Paw Processing Company (Canada), Ltd.                   |  | Alberta                             
|Brown Bear Enterprises, LLC                                  |  | Delaware                            
|Border Minnesota Pipeline, LLC                               |  | Delaware                            
|Black Mesa Holdings, Inc.                                    |  | Delaware                            
|Black Mesa Pipeline, Inc.                                    |  | Delaware                            
|Black Mesa Pipeline Operations, L.L.C.                       |  | Delaware                            
|Black Mesa Technologies, Inc.                                |  | Oklahoma                            
|Black Mesa Technologies Services, LLC (60%)                  |  | Oklahoma                            
|Border Midstream Services, Ltd.                              |  | Alberta                             
|Border Midwestern Company                                    |  | Delaware                            
|Midwestern Gas Marketing Company                             |  | Delaware                            
|Midwestern Gas Transmission Company                          |  | Delaware                            
|Border Viking Company                                        |  | Delaware                            
|Viking Gas Transmission Company                              |  | Delaware                            
|Crestone Energy Ventures, L.L.C.                             |  | Delaware                            
|Crestone Bighorn, L.L.C.                                     |  | Delaware                            
|Crestone Gathering Services, L.L.C.                          |  | Delaware                            
|Crestone Powder River, L.L.C.                                |  | Delaware                            
|Crestone Wind River, L.L.C.                                  |  | Delaware                            
|Northern Border Pipeline Company (general partnership) (50%) |  | Texas                               
|Guardian Pipeline, L.L.C.                                    |  | Delaware                            
|Chisholm Pipeline Company (50%)                              |  | Delaware                            
|Chisholm Pipeline Holdings, L.L.C.                           |  | Delaware                            
|Mid Continent Market Center, L.L.C.                          |  | Kansas                              
|OkTex Pipeline Company, L.L.C.                               |  | Delaware                            
|ONEOK Field Services Company, L.L.C.                         |  | Oklahoma                            
|ONEOK Gas Gathering, L.L.C.                                  |  | Oklahoma                            
|ONEOK Gas Storage Holdings, L.L.C.                           |  | Delaware                            
|ONEOK Gas Storage, L.L.C.                                    |  | Oklahoma                            
|ONEOK Gas Transportation, L.L.C.                             |  | Oklahoma                            
|ONEOK Hydrocarbon, L.L.C.                                    |  | Delaware                            
|ONEOK Hydrocarbon, L.P.                                      |  | Delaware                            
|ONEOK Hydrocarbon GP, L.L.C.                                 |  | Delaware                            
|ONEOK Hydrocarbon Holdings, L.L.C.                           |  | Delaware                            



Schedule 4.14-1



---

|                                                           |  |         
|---------------------------------------------------------- |  | --------
|ONEOK Hydrocarbon Southwest, L.L.C.                        |  | Delaware
|ONEOK MB I, L.P.                                           |  | Delaware
|ONEOK Midstream Gas Supply, L.L.C.                         |  | Oklahoma
|ONEOK Mont Belvieu Storage Company, L.L.C.                 |  | Oklahoma
|ONEOK NGL Pipeline, L.P.                                   |  | Delaware
|ONEOK Overland Pass Holdings, L.L.C.                       |  | Oklahoma
|ONEOK Pipeline Holdings, L.L.C.                            |  | Delaware
|ONEOK Sayre Storage Company, L.L.C.                        |  | Delaware
|ONEOK Texas Gas Storage, L.P.                              |  | Texas   
|ONEOK Transmission Company, L.L.C.                         |  | Delaware
|ONEOK Underground Storage Company, L.L.C.                  |  | Kansas  
|ONEOK VESCO Holdings, L.L.C.                               |  | Delaware
|ONEOK WesTex Transmission, L.P.                            |  | Delaware
|Overland Pass Pipeline Company LLC                         |  | Delaware
|Potato Hills Gas Gathering System (joint venture) (51%)    |  | Oklahoma
|Mont Belvieu I Fractionation Facility (joint venture)(80%) |  | Texas   



Schedule 4.14-2



---

SCHEDULE 7.2

EXISTING LIENS

NONE



Schedule 7.2



---

SCHEDULE 7.4

EXISTING INVESTMENTS



|                                       |  |                  |   |  |                             
|-------------------------------------- |  | ---------------- | - |  | ----------------------------
|Investments                            |  | Percentage Owned |   |  | Jurisdiction of Organization
|China Pipeline Holdings Ltd.           |  | 0.81             | % |  | Cayman Islands              
|                                       |  |                 
|Bighorn Gas Gathering, L.L.C.          |  | 49               | % |  | Delaware                    
|                                       |  |                 
|Fort Union Gas Gathering, L.L.C.       |  | 37.04            | % |  | Delaware                    
|                                       |  |                 
|Lost Creek Gathering Company, L.L.C.   |  | 35               | % |  | Delaware                    
|                                       |  |                 
|Sycamore Gas System                    |  | 48.445           | % |  | Oklahoma                    
|                                       |  |                 
|Venice Energy Services Company, L.L.C. |  | 10.1765          | % |  | Delaware                    

See Schedule 4.14 for Subsidiaries



Schedule 7.4



---

SCHEDULE 7.7

TRANSACTIONS WITH AFFILIATES

Operating Agreement dated as of February 28, 1980 between
Northern Border Pipeline Company and Northern Plains Natural Gas Company, LLC as amended, modified or supplemented from time to time.

Operating Agreement dated as of May 1, 2001 between Midwestern Gas Transmission Company and Northern Plains Natural Gas Company, LLC as amended, modified or supplemented from time to time.

Operating Agreement dated as of January 17, 2003 between Viking Gas Transmission Company and Northern Plains Natural Gas Company, LLC as amended,
modified or supplemented from time to time.

Operating Agreement effective April 5, 2004 between Guardian Pipeline, L.L.C. and
Northern Plains Natural Gas Company, LLC as amended, modified or supplemented from time to time.

Services Agreement dated April
, 2006 with [ONEOK, Inc., ONEOK Partners GP, L.L.C., and NBP Services, LLC] the Borrower and the Guarantor for services including but not limited to executive officers, legal services, accounting, human resources and
benefits, information technology, insurance and risk management, general operations and maintenance, purchasing, inventory control, gas supply services, marketing, pipeline control, right of way management, general operations and maintenance,
measurement, engineering, contract administration, SEC reporting, day-to-day supervisory and administrative services, planning support, budgeting supporting, technical, treasury services, tax and internal audit services, systems and other services
required to be provided pursuant to the Partnership Agreement and Intermediate Partnership Agreement.

[To be updated]



Schedule 7.7



---

EXHIBIT A

REVOLVING CREDIT NOTE



|    |  |                                    
|--- |  | -----------------------------------
|[$] |  | New York, New York [March 30, 2007]

FOR VALUE RECEIVED, the undersigned, ONEOK PARTNERS, L.P., a Delaware limited partnership (the
Borrower), hereby promises to pay to [name of Lender] (the Lender) or its registered assigns, at the office of SunTrust Bank (SunTrust) at 303 Peachtree St., N.E., Atlanta, Georgia
30308, on the Revolving Commitment Termination Date (as defined in the Amended and Restated Revolving Credit Agreement dated as of [March 30, 2007] (as the same may be amended, restated, supplemented or otherwise modified from time to time, the
Credit Agreement; capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement), among the Borrower, the lenders from time to time party thereto and
SunTrust, as administrative agent for the lenders, Swingline Lender and Issuing Bank, the lesser of the principal sum of [amount of such Lenders Revolving Commitment] and the aggregate unpaid principal amount of all Revolving Loans made
by the Lender to the Borrower pursuant to the Credit Agreement, in lawful money of the United States of America in immediately available funds, and to pay interest from the date hereof on the principal amount thereof from time to time outstanding,
in like funds, at said office, at the rate or rates per annum and payable on such dates as provided in the Credit Agreement. In addition, should legal action or an attorney-at-law be utilized to collect any amount due hereunder, the Borrower further
promises to pay all costs of collection, including the reasonable attorneys fees of the Lender.

Upon the occurrence of an Event of
Default, the Borrower promises to pay interest, on demand, at a rate or rates provided in the Credit Agreement.

All borrowings evidenced
by this Revolving Credit Note and all payments and prepayments of the principal hereof and the date thereof shall be endorsed by the holder hereof on the schedule attached hereto and made a part hereof or on a continuation thereof which shall be
attached hereto and made a part hereof, or otherwise recorded by such holder in its internal records; provided, that the failure of the holder hereof to make such a notation or any error in such notation shall not affect the obligations of the
Borrower to make the payments of principal and interest in accordance with the terms of this Revolving Credit Note and the Credit Agreement.

This Revolving Credit Note is a replacement and increase of the Lenders existing Amended and Restated Revolving Credit Note dated March 30, 2006 in the principal sum of
$, and is issued in connection with, and is entitled to the benefits of, the Credit Agreement which, among other things,
contains provisions for the acceleration of the maturity hereof upon the happening of certain events, for prepayment of the principal hereof prior to the maturity hereof and for the amendment or waiver of certain provisions of the Credit Agreement,
all upon the terms and conditions therein specified.



Exhibit A-1



---

THIS REVOLVING CREDIT NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF
NEW YORK AND ANY APPLICABLE LAWS OF THE UNITED STATES OF AMERICA.



ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general partnerBy:Name:

Curtis DinanTitle:

Senior Vice President, Chief Financial Officer and Treasurer[SEAL]




Exhibit A-2



---

LOANS AND PAYMENTS



|     |  |                        |  |                      |  |                                 |  |                              
|---- |  | ---------------------- |  | -------------------- |  | ------------------------------- |  | -----------------------------
|Date |  | Amount andType of Loan |  | Payments ofPrincipal |  | Unpaid PrincipalBalance of Note |  | Name of PersonMaking Notation
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              



Exhibit A-3



---

EXHIBIT B

SWINGLINE NOTE



|            |  |                                    
|----------- |  | -----------------------------------
|$75,000,000 |  | New York, New York [March 30, 2007]

FOR VALUE RECEIVED, the undersigned, ONEOK PARTNERS, L.P., a Delaware limited partnership (the
Borrower), hereby promises to pay to SUNTRUST BANK (the Swingline Lender) or its registered assigns, at the office of SunTrust Bank (SunTrust) at 303 Peachtree St., N.E., Atlanta, Georgia
30308, on the Revolving Commitment Termination Date (as defined in the Amended and Restated Revolving Credit Agreement dated as of [March 30, 2007] (as the same may be amended, supplemented or otherwise modified from time to time, the
Credit Agreement; capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement), among the Borrower, the lenders from time to time party thereto and
SunTrust, as administrative agent for the lenders, the lesser of the principal sum of $75,000,000 and the aggregate unpaid principal amount of all Swingline Loans made by the Swingline Lender to the Borrower pursuant to the Credit Agreement, in
lawful money of the United States of America in immediately available funds, and to pay interest from the date hereof on the principal amount thereof from time to time outstanding, in like funds, at said office, at the rate or rates per annum and
payable on such dates as provided in the Credit Agreement. In addition, should legal action or an attorney-at-law be utilized to collect any amount due hereunder, the Borrower further promises to pay all costs of collection, including the reasonable
attorneys fees of the Swingline Lender.

Upon the occurrence of an Event of Default, the Borrower promises to pay interest, on
demand, at a rate or rates provided in the Credit Agreement.

All borrowings evidenced by this Swingline Note and all payments and
prepayments of the principal hereof and the date thereof shall be endorsed by the holder hereof on the schedule attached hereto and made a part hereof or on a continuation thereof which shall be attached hereto and made a part hereof, or otherwise
recorded by such holder in its internal records; provided, that the failure of the holder hereof to make such a notation or any error in such notation shall not affect the obligations of the Borrower to make the payments of principal and interest in
accordance with the terms of this Swingline Note and the Credit Agreement.

This Swingline Note is a replacement and increase of the
Swingline Lenders existing Swingline Note dated March 30, 2006, in the principal sum of $15,000,000 and is issued in connection with, and is entitled to the benefits of, the Credit Agreement which, among other things, contains provisions
for the acceleration of the maturity hereof upon the happening of certain events, for optional and mandatory prepayment of the principal hereof prior to the maturity hereof and for the amendment or waiver of certain provisions of the Credit
Agreement, all upon the terms and conditions therein specified.



Exhibit B-1



---

THIS SWINGLINE NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW
YORK AND ANY APPLICABLE LAWS OF THE UNITED STATES OF AMERICA.



ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general partnerBy:Name:

Curtis DinanTitle:

Senior Vice President, Chief Financial Officer and Treasurer[SEAL]




Exhibit B-2



---

LOANS AND PAYMENTS



|     |  |                        |  |                      |  |                                 |  |                              
|---- |  | ---------------------- |  | -------------------- |  | ------------------------------- |  | -----------------------------
|Date |  | Amount andType of Loan |  | Payments ofPrincipal |  | Unpaid PrincipalBalance of Note |  | Name of PersonMaking Notation
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              
|     |  |                        |  |                      |  |                                 |  |                              



Exhibit B-3



---

EXHIBIT C

FORM OF

ASSIGNMENT AND ACCEPTANCE

[date to be supplied]

Reference
is made to the Amended and Restated Revolving Credit Agreement dated as of [March 30, 2007] (as amended and in effect on the date hereof, the Credit Agreement), among ONEOK PARTNERS, L.P., a Delaware limited partnership, the
Lenders from time to time party hereto and SunTrust Bank, as Administrative Agent for the Lenders. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement.

This Assignment and Acceptance (the Assignment and Acceptance) is dated as of the Assignment Date set forth below and is entered into
by and between the Assignor identified below (the Assignor) and the Assignee identified below (the Assignee).

For an agreed consideration, the Assignor hereby sells and assigns, without recourse, to the Assignee designated below, and the Assignee hereby purchases and assumes, without recourse, from the Assignor, effective as of the Assignment Date
set forth below, the interests set forth below (the Assigned Interest) in the Assignors rights and obligations under the Credit Agreement, including, without limitation, the interests set forth below in the Revolving
Commitment of the Assignor on the Assignment Date and Revolving Loans owing to the Assignor which are outstanding on the Assignment Date, together with the participations in the LC Exposure and the Swingline Exposure of 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, (ii) to the extent permitted to be assigned under applicable law, the Assignee assumes
all claims, suits, causes of action and any other right of the Assignor (in its capacity as Lender) against any Person, whether known or unknown, arising under or in connection with the Credit Agreement, any other documents or instruments delivered
pursuant thereto or the loan transactions governed thereby or in any way based on or related to any of the foregoing, including, but not limited to, contract claims, tort claims, malpractice claims, statutory claims, and all other claims at law or
in equity related to the rights and obligations sold and assigned pursuant to this Assignment and Acceptance, and (iii) 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 2.18(e) 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 shall pay the fee payable to the Administrative Agent pursuant to Section 10.4(b) of the Credit
Agreement.



Exhibit C-1



---

The Assignor (a) represents and warrants that (i) it is the legal and beneficial owner of the
Assigned Interest, (ii) the Assigned Interest is free and clear of any lien, encumbrance or other adverse claim and (ii) it has full power and authority, and has taken all action necessary, to execute and deliver this Assignment and
Assumption and to consummate the transactions contemplated hereby, and (b) assumes no responsibility with respect to (i) any statements, warranties or representations made in or in connection with the Credit Agreement or any other Credit
Document, (ii) the execution, legality, validity, enforceability, genuineness, sufficiency or value of the Credit Documents or any collateral thereunder, (iii) the financial condition of the Borrower, any of its Subsidiaries or Affiliates
or any other Person obligated in respect of any Credit Document or (iv) the performance or observance by the Borrower, any of its Subsidiaries or Affiliates or any other Person of any of their respective obligations under any Credit Document.

The Assignee (a) represents and warrants that (i) it has full power and authority, and has taken all action necessary, to
execute and deliver this Assignment and Assumption and to consummate the transactions contemplated hereby and to become a Lender under the Credit Agreement, (ii) it meets all requirements of an Eligible Assignee under the Credit Agreement
(subject to receipt of such consents as may be required under the Credit Agreement), (iii) from and after the Effective Date, it shall be bound by the provisions of the Credit Agreement as a Lender thereunder and, to the extent of the Assigned
Interest, shall have the obligations of a Lender thereunder, (iv) it is sophisticated with respect to decisions to acquire assets of the type represented by the Assigned Interest and either it, or the person exercising discretion in making its
decision to acquire the Assigned Interest, is experienced in acquiring assets of such type, (v) it has received a copy of the Credit Agreement, together with copies of the most recent financial statements delivered pursuant to Section 5.1
thereof, as applicable, and such other documents and information as it has deemed appropriate to make its own credit analysis and decision to enter into this Assignment and Assumption and to purchase the Assigned Interest on the basis of which it
has made such analysis and decision independently and without reliance on the Administrative Agent or any other Lender, and (vi) if it is a Foreign Lender, attached to the Assignment and Assumption is any documentation required to be delivered
by it pursuant to the terms of the Credit Agreement, duly completed and executed by the Assignee; and (b) agrees that (i) it will, independently and without reliance on the Administrative Agent, the Assignor or any other Lender, and based
on such documents and information as it shall deem appropriate at the time, continue to make its own credit decisions in taking or not taking action under the Credit Documents, and (ii) it will perform in accordance with their terms all of the
obligations which by the terms of the Credit Documents are required to be performed by it as a Lender.

Choose in the alternative
[Alternative A: From and after the Effective Date, the Administrative Agent shall make all payments in respect of the Assigned Interest (including payments of principal, interest, fees and other amounts) to the Assignor for amounts which have
accrued to but excluding the Effective Date and to the Assignee for amounts which have accrued from and after the Effective Date.] [Alternative B: From and after the Effective Date, the Administrative Agent shall make all payments in respect
of the Assigned Interest (including payments of principal, interest, fees and other amounts) to the Assignee whether such amounts have accrued prior to, on or after the Effective Date. The Assignor and the Assignee shall make all appropriate
adjustments in payments by the Administrative Agent for periods prior to the Effective Date or with respect to the making of this assignment directly between themselves.]



Exhibit C-2



---

This Assignment and Assumption shall be binding upon, and inure to the benefit of, the parties hereto and
their respective successors and assigns. This Assignment and Assumption may be executed in any number of counterparts, which together shall constitute one instrument. Delivery of an executed counterpart of a signature page of this Assignment and
Assumption by telecopy shall be effective as delivery of a manually executed counterpart of this Assignment and Assumption. 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 ofRevolving Commitment (setforth, to at least
8 decimals, asa percentage of the aggregateRevolving Commitments of allLenders thereunder)
|Revolving Loans: |  |                           |  | %                                                                                                                                                           

The terms set forth above are hereby agreed to:



[Name of Assignor], as AssignorBy:Name:Title:[Name of Assignee], as AssigneeBy:Name:Title:




Exhibit C-3



---

The undersigned hereby consents to the within
assignment:1/



|                     |  |                           |  |                                         |  |                                |  | 
|-------------------- |  | ------------------------- |  | --------------------------------------- |  | ------------------------------ |  | 
|ONEOK Partners, L.P. |  |                           |  | SunTrust Bank, as Administrative Agent:
|By:                  |  | ONEOK Partners GP, L.L.C. |  |                                         |  |                               
|                     |  |                           |  |                                        
|By:                  |  |                           |  |                                         |  | By:                            |  | 
|Name:                |  |                           |  |                                         |  | Name:                          |  | 
|Title:               |  |                           |  |                                         |  | Title:                         |  | 
|                     |  |                           | 
|                     |  |                           |  |                                         |  | SunTrust Bank, as Issuing Bank
|                     |  |                           |  |                                        
|                     |  |                           |  |                                         |  | By:                            |  | 
|                     |  |                           |  |                                         |  | Name:                          |  | 
|                     |  |                           |  |                                         |  | Title:                         |  | 

---

|1 | Consents to be included to the extent required by Section 10.4(b) of the Credit Agreement.
|- | ------------------------------------------------------------------------------------------



Exhibit C-4



---

EXHIBIT D

FORM OF

AMENDED AND RESTATED GUARANTY AGREEMENT

THIS AMENDED AND RESTATED GUARANTY AGREEMENT (the Agreement), dated as of [March 30, 2007], by and among ONEOK PARTNERS
INTERMEDIATE LIMITED PARTNERSHIP, a Delaware limited partnership (the Guarantor), and ONEOK PARTNERS, L.P. (the Borrower) in favor of SUNTRUST BANK, a Georgia banking corporation, as administrative agent (the
Administrative Agent) for the several banks and other financial institutions (the Lenders) from time to time party to the Amended and Restated Revolving Credit Agreement, dated as of the date hereof, by and
among the Borrower, the Lenders, the Administrative Agent, and SunTrust Bank, as Issuing Bank and as Swingline Lender (as further amended, restated, supplemented or otherwise modified from time to time, the Credit Agreement;
capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement).

WITNESSETH:

WHEREAS, pursuant to the Credit Agreement, the Lenders have agreed to establish a revolving credit facility in
favor of the Borrower;

WHEREAS, the Guarantor is a direct Subsidiary of the Borrower and will derive substantial benefit from the making
of Loans by the Lenders and the issuance of Letters of Credit by the Issuing Bank; and

WHEREAS, it is a condition precedent to the
obligations of the Administrative Agent, the Issuing Bank, the Swingline Lender, and the Lenders under the Credit Agreement that the Guarantor execute and deliver to the Administrative Agent this Amended and Restated Guaranty Agreement and the
Guarantor wishes to fulfill said condition precedent;

NOW, THEREFORE, in order to induce Lenders to extend the Loans and the Issuing Bank
to issue Letters of Credit and to make the financial accommodations as provided for in the Credit Agreement and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

Section 1. Guarantee. The Guarantor unconditionally guarantees, jointly with any other guarantors from time to
time and severally, as a primary obligor and not merely as a surety, (i) the due and punctual payment of all Obligations including, without limitation, (A) the principal of and premium, if any, and interest (including interest accruing
during the pendency of any bankruptcy, insolvency, receivership or other similar proceeding, regardless of whether allowed or allowable in such proceeding) on the Loans, when and as due, whether at maturity, by acceleration, upon one or more dates
set for prepayment or otherwise, (B) each payment required to be made by the Borrower under the Credit Agreement in respect of any Letter of Credit, when and as due, including payments in respect of reimbursement or disbursements, interest
thereon and obligations to provide cash collateral, and (C) all other monetary obligations, including fees, costs, expenses and indemnities, whether primary, secondary, direct, contingent, fixed or



Exhibit D-1



---

otherwise (including monetary obligations incurred during the pendency of any bankruptcy, insolvency, receivership or other similar proceeding, regardless of
whether allowed or allowable in such proceeding), of the Loan Parties to the Administrative Agent and the Lenders under the Credit Agreement and the other Loan Documents, (ii) the due and punctual performance of all covenants, agreements,
obligations and liabilities of the Loan Parties under or pursuant to the Credit Agreement and the other Loan Documents; and (iii) the due and punctual payment and performance of all obligations of the Borrower, monetary or otherwise, under any
Hedging Transaction relating to the Obligations entered into with a counterparty that was a Lender or an Affiliate of a Lender at the time such Hedging Transaction was entered into (all the monetary and other obligations referred to in the preceding
clauses (i) through (iii) being collectively called the Guaranteed Obligations). The Guarantor further agrees that the Guaranteed Obligations may be extended or renewed (but not increased), in whole or in part, without
notice to or further assent from the Guarantor, and that the Guarantor will remain bound upon its guarantee notwithstanding any extension or renewal of any Guaranteed Obligations.

Section 2.Obligations Not Waived. To the fullest extent permitted by applicable law, the Guarantor waives presentment or
protest to, demand of or payment from the other Loan Parties of any of the Guaranteed Obligations, and also waives notice of acceptance of its guarantee and notice of protest for nonpayment. To the fullest extent permitted by applicable law, the
obligations of the Guarantor hereunder shall not be affected by (i) the failure of the Administrative Agent or any Lender to assert any claim or demand or to enforce or exercise any right or remedy against the Borrower or any other guarantor
under the provisions of the Credit Agreement, any other Loan Document or otherwise, (ii) any rescission, waiver, amendment or modification of, or any release from any of the terms or provisions of, this Agreement, any other Loan Document, any
guarantee or any other agreement, or (iii) the failure to perfect any security interest in, or the release of, any of the security held by or on behalf of the Administrative Agent or any Lender.

Section 3.Guarantee of Payment. The Guarantor further agrees that its guarantee constitutes a guarantee of payment when due
and not of collection, and waives any right to require that any resort be had by the Administrative Agent or any Lender to any security held for payment of the Guaranteed Obligations or to any balance of any deposit account or credit on the books of
the Administrative Agent or any Lender in favor of the Borrower or any other Person.

Section 4.No Discharge or
Diminishment of Guarantee. The obligations of the Guarantor hereunder shall not be subject to any reduction, limitation, impairment or termination for any reason (other than the indefeasible payment in full in cash of the Guaranteed
Obligations), including any claim of waiver, release, surrender, alteration or compromise of any of the Guaranteed Obligations, and shall not be subject to any defense or setoff, counterclaim, recoupment or termination whatsoever by reason of the
invalidity, illegality or unenforceability of the Guaranteed Obligations or otherwise. Without limiting the generality of the foregoing, the obligations of the Guarantor hereunder shall not be discharged or impaired or otherwise affected by the
failure of the Administrative Agent or any Lender to assert any claim or demand or to enforce any remedy under the Credit Agreement, any other Loan Document or any other agreement, by any waiver or modification of any provision of any thereof, by
any default, failure or delay, willful or otherwise, in the performance of the Guaranteed Obligations, or by any other act or omission that may or might in any manner or to any extent vary the risk of the Guarantor



Exhibit D-2



---

or that would otherwise operate as a discharge of the Guarantor as a matter of law or equity (other than the indefeasible payment in cash of the
Obligations).

Section 5. Defenses of Borrower Waived. To the fullest extent permitted by applicable law, the Guarantor
waives any defense based on or arising out of any defense of any Loan Party or the unenforceability of the Guaranteed Obligations or any part thereof from any cause, or the cessation from any cause of the liability of any Loan Party, other than the
final and indefeasible payment in full in cash of the Guaranteed Obligations. The Administrative Agent and the Lenders may, at their election, foreclose on any security held by one or more of them by one or more judicial or nonjudicial sales, accept
an assignment of any such security in lieu of foreclosure, compromise or adjust any part of the Guaranteed Obligations, make any other accommodation with any other Loan Party or any other guarantor, without affecting or impairing in any way the
liability of the Guarantor hereunder except to the extent the Guaranteed Obligations have been finally and indefeasibly paid in cash. Pursuant to applicable law, the Guarantor waives any defense arising out of any such election even though such
election operates, pursuant to applicable law, to impair or to extinguish any right of reimbursement or subrogation or other right or remedy of the Guarantor against the Borrower or any other guarantor, as the case may be, or any security.

Section 6. Agreement to Pay; Subordination. In furtherance of the foregoing and not in limitation of any other right
that the Administrative Agent or any Lender has at law or in equity against the Guarantor by virtue hereof, upon the failure of the Borrower or any other Loan Party to pay any Obligation when and as the same shall become due, whether at maturity, by
acceleration, after notice of prepayment or otherwise, the Guarantor hereby promises to and will forthwith pay, or cause to be paid, to the Administrative Agent for the benefit of the Lenders in cash the amount of such unpaid Obligation. Upon
payment by the Guarantor of any sums to the Administrative Agent, all rights of the Guarantor against any Loan Party arising as a result thereof by way of right of subrogation, contribution, reimbursement, indemnity or otherwise shall in all
respects be subordinate and junior in right of payment to the prior indefeasible payment in full in cash of all the Guaranteed Obligations. In addition, any indebtedness of any Loan Party now or hereafter held by the Guarantor is hereby subordinated
in right of payment to the prior payment in full in cash of the Guaranteed Obligations. If any amount shall erroneously be paid to the Guarantor on account of (i) such subrogation, contribution, reimbursement, indemnity or similar right or
(ii) any such indebtedness of any Loan Party, such amount shall be held in trust for the benefit of the Administrative Agent and the Lenders and shall forthwith be paid to the Administrative Agent to be credited against the payment of the
Guaranteed Obligations, whether matured or unmatured, in accordance with the terms of the Loan Documents; provided that payments of Indebtedness owing by any Loan Party to Guarantor at a time when there does not exist a Default or Event of Default
shall not be held in trust and paid to the Administrative Agent.

Section 7. Information. The Guarantor assumes all
responsibility for being and keeping itself informed of other Loan Parties financial condition and assets, and of all other circumstances bearing upon the risk of nonpayment of the Guaranteed Obligations and the nature, scope and extent of the
risks that the Guarantor assumes and incurs hereunder, and agrees that none of the Administrative Agent or the Lenders will have any duty to advise the Guarantor of information known to it or any of them regarding such circumstances or risks.



Exhibit D-3



---

Section 8. Indemnity and Subrogation. In addition to all such rights of indemnity and
subrogation as the Guarantor may have under applicable law (but subject to Section 6), the Borrower agrees that (a) in the event a payment shall be made by the Guarantor under this Agreement, the Borrower shall indemnify the Guarantor for
the full amount of such payment and the Guarantor shall be subrogated to the rights of the person to whom such payment shall have been made to the extent of such payment and (b) in the event any assets of the Guarantor shall be sold to satisfy
a claim of any Lender under this Agreement, the Borrower shall indemnify the Guarantor in an amount equal to the greater of the book value or the fair market value of the assets so sold.

Section 9. Reserved

Section 10. Subordination. Notwithstanding any provision of this Agreement to the contrary, all rights of the Guarantor under Section 8 and all other rights of indemnity, contribution or subrogation under applicable
law or otherwise shall be fully subordinated to the indefeasible payment in full in cash of the Guaranteed Obligations. No failure on the part of the Borrower to make the payments required under applicable law or otherwise shall in any respect limit
the obligations and liabilities of the Guarantor with respect to its obligations hereunder, and the Guarantor shall remain liable for the full amount of the obligations of the Guarantor hereunder.

Section 11. Representations and Warranties. The Guarantor represents and warrants as to itself that all representations and warranties
relating to it (as a Subsidiary of the Borrower) contained in the Credit Agreement are true and correct.

Section 12.
Termination. The guarantees made hereunder (i) shall terminate when all the Guaranteed Obligations have been paid in full in cash and the Lenders have no further commitment to lend under the Credit Agreement, the LC Exposure has been
reduced to zero and the Issuing Bank has no further obligation to issue Letters of Credit under the Credit Agreement and (ii) shall continue to be effective or be reinstated, as the case may be, if at any time payment, or any part thereof, of
any Obligation is rescinded or must otherwise be restored by any Lender or the Guarantor upon the bankruptcy or reorganization of the Borrower, the Guarantor or otherwise. In connection with the foregoing, the Administrative Agent shall execute and
deliver to the Guarantor or its designee, at the Guarantors expense, any documents or instruments which the Guarantor shall reasonably request from time to time to evidence such termination and release.

Section 13. Binding Effect; Several Agreement; Assignments. Whenever in this Agreement any of the parties hereto is referred to, such
reference shall be deemed to include the successors and assigns of such party; and all covenants, promises and agreements by or on behalf of the Guarantor that are contained in this Agreement shall bind and inure to the benefit of each party hereto
and their respective successors and assigns. This Agreement shall become effective as to the Guarantor when a counterpart hereof executed on behalf of the Guarantor shall have been delivered to the Administrative Agent, and a counterpart hereof
shall have been executed on behalf of the Administrative Agent, and thereafter shall be binding upon the Guarantor and the Administrative Agent and their respective successors and assigns, and shall inure to the benefit of the Guarantor, the
Administrative Agent and the Lenders, and their respective



Exhibit D-4



---

successors and assigns, except that Guarantor shall not have the right to assign its rights or obligations hereunder or any interest herein (and any such
attempted assignment shall be void).

Section 14. Waivers; Amendment.

(a) No failure or delay of the Administrative Agent of any kind in exercising any power or right 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 of
the Administrative Agent hereunder and of the Lenders under the other Loan Documents 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 Guarantor therefrom shall in any event be effective unless the same shall be permitted by subsection (b) below, and then such waiver and consent shall be effective only in the specific instance and for the purpose for which
given. No notice or demand on the Guarantor in any case shall entitle the Guarantor to any other or further notice in similar or other circumstances.

(b) Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to a written agreement entered into between the Guarantor with respect to which such waiver, amendment or
modification relates and the Administrative Agent, with the prior written consent of the Required Lenders (except as otherwise provided in the Credit Agreement).

Section 15. Notices. All communications and notices hereunder shall be in writing and given as provided in Section 10.1 of the Credit Agreement. All communications and notices hereunder to the
Guarantor shall be given to it at its address set forth on Schedule I attached hereto.

Section 16. Severability. Any
provision of this Agreement held to be illegal, invalid or unenforceable in any jurisdiction, shall, as to such jurisdiction, be ineffective to the extent of such illegality, invalidity or unenforceability without affecting the legality, validity or
enforceability of the remaining provisions hereof or thereof; and the illegality, invalidity or unenforceability of a particular provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other
jurisdiction.

Section 17. Counterparts; Integration. This Agreement may be executed in counterparts, each of which
shall constitute an original, but all of which when taken together shall constitute a single contract (subject to Section 13), and shall become effective as provided in Section 13. Delivery of an executed signature page to this Agreement
by facsimile transmission shall be as effective as delivery of a manually executed counterpart of this Agreement. This Agreement constitutes the entire agreement among the parties hereto regarding the subject matters hereof and supersedes all prior
agreements and understandings, oral or written, regarding such subject matter.

Section 18. Rules of Interpretation. The
rules of interpretation specified in Section 1.4 of the Credit Agreement shall be applicable to this Agreement.



Exhibit D-5



---

Section 19.Governing Law; Jurisdiction; Consent to Service of Process.

(a) This Agreement shall be construed in accordance with and be governed by the law (without giving effect to the conflict of law
principles thereof) of the State of New York.

(b) The Guarantor hereby irrevocably and unconditionally submits, for itself and its
property, to the non-exclusive jurisdiction of the United States courts located within the Southern district in the State of New York, and of any state court of the State of New York located in New York County and any appellate court from any
thereof, in any action or proceeding arising out of or relating to this Agreement or any other Loan Document or the transactions contemplated hereby or thereby, 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 court or, to the extent permitted by applicable law, such Federal court. The Guarantor 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, the Issuing Bank or any Lender may otherwise have to bring any action or proceeding relating to this Agreement against the Guarantor or its properties in the courts of any jurisdiction.

(c) The Guarantor irrevocably and unconditionally waives any objection which it may now or hereafter have to the laying of venue of any such suit, action
or proceeding described in paragraph (b) of this Section and brought in any court referred to in paragraph (b) of this Section. Each party hereto irrevocably waives, to the fullest extent permitted by applicable law, the defense of an
inconvenient forum to the maintenance of such action or proceeding in any such court.

(d) The Guarantor irrevocably consents to the
service of process in the manner provided for notices in Section 10.1 of the Credit Agreement. Nothing in this Agreement will affect the right of the Administrative Agent or any Lender to serve process in any other manner permitted by law.

Section 20.Waiver of Jury Trial. EACH PARTY HERETO IRREVOCABLY 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 THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY (WHETHER BASED ON CONTRACT, TORT OR
ANY OTHER THEORY). EACH PARTY HERETO (i) 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 (ii) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.



Exhibit D-6



---

Section 21.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 law, to set off and apply any and all deposits (general or special, time or demand, provisional or final) at any time held and other
Indebtedness at any time owing by such Lender to or for the credit or the account of the Guarantor against any or all the obligations of the Guarantor now or hereafter existing under this Agreement and the other Loan Documents held by such Lender,
irrespective of whether or not such Person shall have made any demand under this Agreement or any other Loan Document and although such obligations may be unmatured. The rights of each Lender under this Section 21 are in addition to
other rights and remedies (including other rights of setoff) that such Lender may have.

Section 22.Savings
Clause.

(a) It is the intent of the Guarantor and the Administrative Agent that the Guarantors maximum obligations hereunder
shall be, but not in excess of:

(i) in a case or proceeding commenced by or against the Guarantor under the provisions of
Title 11 of the United States Code, 11 U.S.C. §§101 et seq. (the Bankruptcy Code) on or within one year from the date on which any of the Guaranteed Obligations are incurred, the maximum amount which would not
otherwise cause the Guaranteed Obligations (or any other obligations of the Guarantor owed to the Administrative Agent or the Lenders) to be avoidable or unenforceable against the Guarantor under (i) Section 548 of the Bankruptcy Code or
(ii) any state fraudulent transfer or fraudulent conveyance act or statute applied in such case or proceeding by virtue of Section 544 of the Bankruptcy Code; or

(ii) in a case or proceeding commenced by or against the Guarantor under the Bankruptcy Code subsequent to one year from the date on which
any of the Guaranteed Obligations are incurred, the maximum amount which would not otherwise cause the Guaranteed Obligations (or any other obligations of the Guarantor to the Administrative Agent or the Lenders) to be avoidable or unenforceable
against the Guarantor under any state fraudulent transfer or fraudulent conveyance act or statute applied in any such case or proceeding by virtue of Section 544 of the Bankruptcy Code; or

(iii) in a case or proceeding commenced by or against the Guarantor under any law, statute or regulation other than the Bankruptcy Code
(including, without limitation, any other bankruptcy, reorganization, arrangement, moratorium, readjustment of debt, dissolution, liquidation or similar debtor relief laws), the maximum amount which would not otherwise cause the Guaranteed
Obligations (or any other obligations of the Guarantor to the Administrative Agent or the Lenders) to be avoidable or unenforceable against the Guarantor under such law, statute or regulation including, without limitation, any state fraudulent
transfer or fraudulent conveyance act or statute applied in any such case or proceeding.

(b) The substantive laws under which the possible
avoidance or unenforceability of the Guaranteed Obligations (or any other obligations of the Guarantor to the Administrative Agent or the Lenders) as may be determined in any case or proceeding shall hereinafter be



Exhibit D-7



---

referred to as the Avoidance Provisions. To the extent set forth in Section 22(a)(i), (ii), and (iii), but only
to the extent that the Guaranteed Obligations would otherwise be subject to avoidance or found unenforceable under the Avoidance Provisions, if the Guarantor is not deemed to have received valuable consideration, fair value or reasonably equivalent
value for the Guaranteed Obligations, or if the Guaranteed Obligations would render the Guarantor insolvent, or leave the Guarantor with an unreasonably small capital to conduct its business, or cause the Guarantor to have incurred debts (or to have
intended to have incurred debts) beyond its ability to pay such debts as they mature, in each case as of the time any of the Guaranteed Obligations are deemed to have been incurred under the Avoidance Provisions and after giving effect to the
contribution by the Guarantor, the maximum Guaranteed Obligations for which the Guarantor shall be liable hereunder shall be reduced to that amount which, after giving effect thereto, would not cause the Guaranteed Obligations (or any other
obligations of the Guarantor to the Administrative Agent or the Lenders), as so reduced, to be subject to avoidance or unenforceability under the Avoidance Provisions.

(c) This Section 22 is intended solely to preserve the rights of the Administrative Agent and the Lenders hereunder to the maximum extent that would not cause the Guaranteed Obligations of the Guarantor to
be subject to avoidance or unenforceability under the Avoidance Provisions, and neither the Guarantor nor any other Person shall have any right or claim under this Section 22 as against the Administrative Agent or Lenders that would not
otherwise be available to such Person under the Avoidance Provisions.

Section 23.NO GENERAL PARTNERS
LIABILITY. By their acceptance of this Agreement, the Administrative Agent and the Lenders agree for themselves and their respective successors, participants and assigns, including any subsequent holder of any Note, that any claim against
Guarantor which may arise under this Agreement shall be made only against and shall be limited to the assets of Guarantor, and that no judgment, order or execution entered in any suit, action or proceeding, whether legal or equitable, on this
Agreement shall be obtained or enforced against any general partner of Guarantor (individually, a General Partner, and collectively, General Partners) or its or their assets for the purpose of
obtaining satisfaction and payment of this Agreement, the Guaranteed Debt, any other Obligation or any claims arising hereunder, any right to proceed against the General Partners individually or their respective representatives or assets being
hereby expressly waived, renounced and remitted by the Administrative Agent and the Lenders for themselves and their respective successors, participants and assigns. Nothing in this Section 23, however, shall be construed so as to
prevent the Administrative Agent, any Lender or any other holder of any Note from commencing any action, suit or proceeding with respect to or causing legal papers to be served upon any General Partner for the purpose of obtaining jurisdiction over
Guarantor.

Section 24.Amendment and Restatement. This Agreement constitutes an amendment and restatement of the
Amended and Restated Guaranty Agreement dated as of March 30, 2006 in favor of the Administrative Agent (the Existing Guaranty Agreement) and is not, and is not intended by the parties to be, a novation of the Existing Guaranty
Agreement. All rights and obligations of the parties shall continue in effect, except as otherwise expressly set forth herein. All references in the Loan Documents to the Guaranty Agreement shall be deemed to refer to and mean this Amended and
Restated Guaranty Agreement, as the same may be further amended, supplemented, and restated from time to time.



Exhibit D-8



---

IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as of the day and year
first above written.



BORROWER:ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general
partnerBy:Name:

Curtis DinanTitle:

Senior Vice President, Chief Financial Officer and
Treasurer




GUARANTOR:ONEOK PARTNERS INTERMEDIATE LIMITED PARTNERSHIPBy:

ONEOK ILP GP, L.L.C., its sole general
partnerBy:Name:Title:




|                                                        |  | 
|------------------------------------------------------- |  | 
|Acknowledged by: SUNTRUST BANK,
as Administrative Agent
|                                                        | 
|By:                                                     |  | 
|Name:                                                   |  | 
|Title:                                                  |  | 



Exhibit D-9



---

SCHEDULE I TO THE

GUARANTY AGREEMENT



|                                                |  |                                                                
|----------------------------------------------- |  | ---------------------------------------------------------------
|Guarantor                                       |  | Address                                                        
|ONEOK Partners Intermediate Limited Partnership |  | ONEOK Partners, L.P. 100 West Fifth Street
Tulsa, OK 74103-2498



Exhibit D-1



---

EXHIBIT 2.3

NOTICE OF REVOLVING BORROWING

,

SunTrust Bank,

as Administrative Agent

for the Lenders referred to below

303 Peachtree
Street, N.E.

Atlanta, GA 30308

Attention: Dorris Folsom

Ladies and Gentlemen:

Reference is made to
the Amended and Restated Revolving Credit Agreement dated as of [March 30, 2007] (as amended and in effect on the date hereof, the Credit Agreement), among the undersigned, as Borrower, the Lenders named therein, and SunTrust Bank, as
Administrative Agent. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement. This notice constitutes a Notice of Revolving Borrowing, and the Borrower hereby requests a
Revolving Borrowing under the Credit Agreement, and in that connection the Borrower specifies the following information with respect to the Revolving Borrowing requested hereby:



|    |  |                                                                                                         |  | 
|--- |  | ------------------------------------------------------------------------------------------------------- |  | 
|(A) |  | Aggregate principal amount of Revolving Borrowing2/:                                                    |  | 
|    |  |                                                                                                        
|(B) |  | Date of Revolving Borrowing (which is a Business Day):                                                  |  | 
|    |  |                                                                                                        
|(C) |  | Interest Rate basis3/:                                                                                  |  | 
|    |  |                                                                                                        
|(D) |  | Interest Period4/:                                                                                      |  | 
|    |  |                                                                                                        
|(E) |  | Location and number of Borrowers account to which proceeds of Revolving Borrowing are to be disbursed: |  | 

---

|2 | Not less than $5,000,000 and an integral multiple of $1,000,000.
|- | ----------------------------------------------------------------

|3 | Eurodollar Borrowing or Base Rate Borrowing.
|- | --------------------------------------------

|4 | Which must comply with the definition of Interest Period and end not later than the
Revolving Commitment Termination Date.
|- | ----------------------------------------------------------------------------------------------------------------------------



Exhibit 2.3-1



---

The Borrower hereby represents and warrants that the conditions specified in paragraphs (a), (b) and
(c) of Section 3.2 of the Credit Agreement are satisfied.





Yours very truly,ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general partnerBy:Name:Title:




Exhibit 2.3-2



---

EXHIBIT 2.4

NOTICE OF SWINGLINE BORROWING

,

SunTrust Bank,

as Administrative Agent

for the Lenders referred to below

303 Peachtree Street, N.E.

Atlanta, GA 30308

Attention: Dorris Folsom

Ladies and Gentlemen:

Reference is made to the Amended and
Restated Revolving Credit Agreement dated as of [March 30, 2007] (as amended and in effect on the date hereof, the Credit Agreement), among the undersigned, as Borrower, the Lenders named therein, and SunTrust Bank, as
Administrative Agent. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement. This notice constitutes a Notice of Revolving Borrowing, and the Borrower hereby requests a
Revolving Borrowing under the Credit Agreement, and in that connection the Borrower specifies the following information with respect to the Revolving Borrowing requested hereby:



|    |  |                                                                                                    |  | 
|--- |  | -------------------------------------------------------------------------------------------------- |  | 
|(A) |  | Principal amount of Swingline Loan5/:                                                              |  | 
|    |  |                                                                                                   
|(B) |  | Date of Swingline Loan (which is a Business Day):                                                  |  | 
|    |  |                                                                                                   
|(C) |  | Location and number of Borrowers account to which proceeds of Swingline Loan are to be disbursed: |  | 

---

|5 | Not less than $100,000 and an integral multiple of $50,000.
|- | -----------------------------------------------------------



Exhibit 2.4



---

The Borrower hereby represents and warrants that the conditions specified in paragraphs (a), (b) and
(c) of Section 3.2 of the Credit Agreement are satisfied.



Yours very truly,ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general
partnerBy:Name:Title:




Exhibit 2.4



---

EXHIBIT 2.6

FORM OF NOTICE OF CONTINUATION/CONVERSION

,

SunTrust Bank,

as Administrative Agent

for the Lenders referred to below

303 Peachtree Street, N.E.

Atlanta, GA 30308

Attention: Dorris Folsom

Ladies and Gentlemen:

Reference is made to the Amended and
Restated Revolving Credit Agreement dated as of [March 30, 2007] (as amended and in effect on the date hereof, the Credit Agreement), among the undersigned, as Borrower, the Lenders named therein, and SunTrust Bank, as
Administrative Agent. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement. This notice constitutes a Notice of Continuation/Conversion and the Borrower hereby requests
the conversion or continuation of a Revolving Borrowing under the Credit Agreement, and in that connection the Borrower specifies the following information with respect to the Revolving Borrowing to be converted or continued as requested hereby:



|    |  |                                                                    |  | 
|--- |  | ------------------------------------------------------------------ |  | 
|(A) |  | Revolving Borrowing to which this request applies:                 |  | 
|    |  |                                                                   
|(B) |  | Principal amount of Revolving Borrowing to be converted/continued: |  | 
|    |  |                                                                   
|(C) |  | Effective date of election (which is a Business Day):              |  | 
|    |  |                                                                   
|(D) |  | Interest rate basis:                                               |  | 
|    |  |                                                                   
|(E) |  | Interest Period:                                                   |  | 



Yours very truly,ONEOK PARTNERS, L.P.By:

ONEOK Partners GP, L.L.C., its sole general
partnerBy:Name:Title:




Exhibit 2.6



---

EXHIBIT 3.1(b)(v)

FORM OF

SECRETARYS CERTIFICATE

Reference is made to the Amended and Restated Revolving Credit Agreement dated as of March 30, 2007 (the Credit Agreement), among
ONEOK Partners, L.P. (the Borrower), the lenders named therein, and SunTrust Bank, as Administrative Agent. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the
Credit Agreement. This certificate is being delivered pursuant to Section 3.1 of the Credit Agreement.

I, Eric Grimshaw, Assistant
Secretary of ONEOK Partners GP, L.L.C., sole general partner of ONEOK PARTNERS, L.P., and Secretary of ONEOK ILP GP, L.L.C., sole general partner of ONEOK PARTNERS INTERMEDIATE LIMITED PARTNERSHIP (the Intermediate Partnership),
both being limited partnerships formed pursuant to the Revised Uniform Limited Partnership Act of the State of Delaware, DO HEREBY CERTIFY that

(a) I am familiar with the Borrowers and the Intermediate Partnerships affairs and records;

(b) there have been no
amendments or supplements to, or restatements of, the Certificates of Limited Partnership of the Borrower and of the Intermediate Partnership delivered pursuant to Section 3.1 of the Credit Agreement;

(c) no proceeding have been instituted or are pending or contemplated with respect to the dissolution, liquidation or sale of all or substantially all
the assets of the Borrower or threatening its existence or the forfeiture or any of its rights;

(d) annexed hereto as Exhibit A is a true
and correct copy of the Third Amended and Restated Agreement of Limited Partnership of Borrower dated September 15, 2006 which is currently in effect and no amendments thereto subsequently have been adopted or filed;

(e) annexed hereto as Exhibit B is a true and correct copy of the Second Amended and Restated Agreement of Limited Partnership of the Intermediate
Partnership dated May 17, 2006 which is currently in effect and no amendments thereto subsequently have been adopted or filed;

(f)
annexed hereto as Exhibit C is a true and correct copy of certain resolutions duly adopted by the partnership policy committees of the Borrower and of the Intermediate Partnership on March 29, 2006. Said resolutions are the only resolutions
adopted by either the partnership policy committees of the Borrower and of the Intermediate Partnership or the boards of directors of the general partners of the Borrower and of the Intermediate Partnership (successors to the management function of
the partnership policy committees) or any committees thereof relating to the Credit Agreement and the other Loan Documents to which the Borrower and the Intermediate Partnership are parties and the transactions contemplated therein, and such
resolutions have not been revoked, amended, supplemented or modified and are in full force and effect on the date hereof;



Exhibit 3.1(b)(v)



---

(g) each of the persons named below is and has been at all times since March 1, 2007 a duly elected
and qualified officer of the general partner of the Borrower holding the respective office set forth opposite his or her name and the signature set forth opposite of each such person is his or her genuine signature:



|     |  |       |  |                   
|---- |  | ----- |  | ------------------
|Name |  | Title |  | Specimen Signature
|     |  |       |  |                   
|     |  |       |  |                   
|     |  |       |  |                   
|     |  |       |  |                   

(h) each of the persons named below is and has been at all times since March 1, 2007 a duly
elected and qualified officer of the general partner of the Intermediate Partnership holding the respective office set forth opposite his or her name and the signature set forth opposite of each such person is his or her genuine signature:



|     |  |       |  |                   
|---- |  | ----- |  | ------------------
|Name |  | Title |  | Specimen Signature
|     |  |       |  |                   
|     |  |       |  |                   
|     |  |       |  |                   
|     |  |       |  |                   



Exhibit 3.1(b)(v)



---

IN WITNESS WHEREOF, I have hereunto signed my name this 30th day of March, 2007.



Name:

Eric GrimshawAssistant Secretary


I, Curtis L. Dinan, Senior Vice President, Chief Financial Officer and Treasurer of ONEOK
Partners GP, L.L.C., the sole general partner of the Borrower, do hereby certify that Eric Grimshaw has been duly elected, is duly qualified and is the Secretary of ONEOK Partners GP, L.L.C., and the Secretary of ONEOK ILP GP, L.L.C., that the
signature set forth above is his genuine signature and that he has held such office at all times since March 1, 2007.



Name:

Curtis L. DinanTitle:

Senior Vice President, Chief Financial Officer and Treasurer




Exhibit 3.1(b)(v)



---

EXHIBIT 3.1(b)(viii)

FORM OF

OFFICERS CERTIFICATE

Reference is made to the Amended and Restated Revolving Credit Agreement dated as of [March 30, 2007] (the Credit Agreement), among
ONEOK Partners, L.P. (the Borrower), the Lenders from time to time party thereto, and SunTrust Bank, as Administrative Agent. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such
terms in the Credit Agreement. This certificate is being delivered pursuant to Section 3.1(b)(viii) of the Credit Agreement.

I,
,
[]
of ONEOK Partners GP, L.L.C., sole general partner of the Borrower, DO HEREBY CERTIFY that:



| | (a) | the representations and warranties of the Borrower set forth in the Credit Agreement are true and correct on and as of the date hereof; and
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | no Default or Event of Default has occurred and is continuing at the date hereof; and
| | --- | -------------------------------------------------------------------------------------



| | (c) | since December 31, 2006, there has been no change which has had or could reasonably be expected to have a Material Adverse Effect.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------

IN WITNESS WHEREOF, I have hereunto signed my name this  day of March, 2007.



Name:Title:




Exhibit 3.1(b)(viii)



---

EXHIBIT 5.1(c)

FORM OF

COMPLIANCE CERTIFICATE



|To: | SunTrust Bank,
|--- | --------------

as
Administrative Agent

303 Peachtree St., N.E.

Atlanta, GA 30308

Attention:

Ladies and Gentlemen:

Reference is made to
that certain Amended and Restated Revolving Credit Agreement, dated as of [March 30, 2007] (as amended, restated, supplemented or otherwise modified, the Credit Agreement), by and among ONEOK PARTNERS, L.P., a Delaware limited
partnership (the Borrower), the lenders from time to time party thereto (the Lenders), and SUNTRUST BANK, in its capacity as administrative agent for the Lenders (the Administrative Agent), as
issuing bank (the Issuing Bank) and as swingline lender (the Swingline Lender). Capitalized terms used herein and not otherwise defined shall have the meanings assigned to such terms in the Credit Agreement.

I,
,
being the duly elected, qualified and acting [Chief Executive Officer, Chief Financial Officer or Treasurer] of the general partner of Borrower, hereby certify to the Administrative Agent and each Lender as follows:

1. The consolidated financial statements of the Borrower and its Subsidiaries attached hereto for the fiscal [quarter][year] ending
 fairly present in all material respects the financial condition of the Borrower and its Subsidiaries as at the end of
such fiscal [quarter][year] on a consolidated basis, and the related statements of income and cash flows of the Borrower and its Subsidiaries for such fiscal [quarter/year], in accordance with generally accepted accounting principles consistently
applied (subject, in the case of such quarterly financial statements, to normal year-end audit adjustments and the absence of footnotes).

2. The calculations set forth in Attachment 1 are computations of the financial covenant set forth in Article VI of the Credit Agreement calculated from the financial statements referenced in paragraph 1 above in accordance with the
terms of the Credit Agreement.

3. The Borrower and its Subsidiaries have complied
with all the terms and provisions of Section 3.02(a) of the Sarbanes-Oxley Act as in effect on the [date hereof][Restatement Date].6

---

|6 | In no event shall the Borrower be required to certify as to compliance with any provisions of
Section 3.02(a) of the Sarbanes-Oxley Act that are more onerous than those in effect on the Restatement Date. If the provisions of Section 3.02(a) as of the date of delivery of this certificate are more onerous than those in effect on the
Restatement Date, the Borrower will certify compliance with the provisions of Section 3.02(a) as in effect on the Restatement Date.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Exhibit 5.1(c)



---

4. Based upon a review of the activities of Borrower and its Subsidiaries and the financial statements
attached hereto during the period covered thereby, as of the date hereof, there exists no Default or Event of Default.



Name:Title:




Exhibit 5.1(c)



---

Attachment to Compliance Certificate



Exhibit 5.1(c)