REVOLVING CREDIT AGREEMENT

EXHIBIT 10.1

Execution Version

REVOLVING CREDIT AGREEMENT

(5 Year Facility)

dated as of December 15, 2006

among

ATMOS ENERGY CORPORATION,

as Borrower,

THE LENDERS FROM TIME TO TIME PARTY HERETO,

SUNTRUST BANK,

as Administrative Agent,

WACHOVIA BANK, N.A.

as Syndication Agent,

and

BANK OF AMERICA, N.A., JPMORGAN CHASE BANK, N.A., AND THE ROYAL

BANK OF SCOTLAND PLC

as Co-Documentation Agents

SUNTRUST CAPITAL MARKETS, INC.

and

WACHOVIA CAPITAL MARKETS, LLC,

As Joint Lead Arrangers and Joint Book Managers

TABLE OF CONTENTS

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REVOLVING CREDIT AGREEMENT

THIS REVOLVING CREDIT AGREEMENT (this " Agreement ") is made and entered into as of December 15, 2006, by and among ATMOS ENERGY CORPORATION, a Texas and Virginia corporation (the " Borrower "), the several banks and other financial institutions and lenders from time to time party hereto (the " Lenders "), and SUNTRUST BANK, in its capacity as administrative agent for the Lenders (the " Administrative Agent ").

W I T N E S S E T H:

WHEREAS, the Borrower has requested that the Lenders establish in favor of the Borrower a $600,000,000 revolving credit facility having a scheduled term of five years;

WHEREAS , subject to the terms and conditions of this Agreement, the Lenders, to the extent of their respective Commitments as defined herein, are willing severally to establish the requested revolving credit facility in favor of the Borrower.

NOW, THEREFORE , in consideration of the premises and the mutual covenants herein contained, the Borrower, the Lenders and the Administrative Agent agree 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):

" Additional Commitment Amount " shall have the meaning set forth in Section 2.19 .

" Additional Lender " shall have the meaning set forth in Section 2.19 .

" 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 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 directly or indirectly controlling, controlled by or under direct or indirect common control with such Person. A Person shall be deemed to control another Person if such Person possesses, directly or indirectly, the power (a) to vote 10% or more of the securities having ordinary voting power for the election

of directors of such other Person or (b) to direct or cause direction of the management and policies of such other Person, whether through the ownership of voting securities, by contract or otherwise.

" Aggregate Commitment Amount " shall mean the aggregate principal amount of the Aggregate Commitments from time to time. On the Closing Date, the Aggregate Commitment Amount equals $600,000,000.

" Aggregate Commitments " shall mean, collectively, all Commitments of all Lenders at any time outstanding.

" Applicable Commitment Fee Percentage " shall mean, as of any date, with respect to the Commitment Fee as of any date, the percentage per annum determined by reference to the applicable Rating Category as set forth on Schedule I ; provided , that a change in the Applicable Commitment Fee Percentage resulting from a change in the 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 Commitment Fee Percentage for the Commitment Fee from the Closing Date until the first change in the applicable Rating Category after the Closing Date shall be at Level III as set forth on Schedule I .

" 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, the percentage per annum determined by reference to the applicable 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 Rating Category shall be effective on the day on which any 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 Margin from the Closing Date until the first change in the applicable Rating Category after the Closing Date shall be at Level III as set forth on Schedule I .

" Applicable Utilization Fee Percentage " shall mean, as of any date, with respect to the Utilization Fee as of any date, the percentage per annum determined by reference to the applicable Rating Category as set forth on Schedule I ; provided , that a change in the Applicable Utilization Fee Percentage resulting from a change in the 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 Utilization Fee Percentage for the Utilization Fee from the Closing Date until the first change in the applicable Rating Category after the Closing Date shall be at Level III as set forth on Schedule I .

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" 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 9.4(b) ) and accepted by the Administrative Agent, in the form of Exhibit B attached hereto or any other form approved by the Administrative Agent.

" Availability Period" shall mean the period from the Closing Date to the Commitment Termination Date.

" Bankruptcy Code " shall mean the Bankruptcy Code in Title 11 of the United States Code, as amended, modified, succeeded or replaced from time to time.

" 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.

" Borrowing " shall mean a borrowing consisting of Loans of the same Type, made, converted or continued on the same date and in the case of Eurodollar Loans, as to which a single Interest Period is in effect.

" 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.

" Capital Stock " shall mean (a) in the case of a corporation, all classes of capital stock of such corporation, (b) in the case of a partnership, partnership interests (whether general or limited), (c) in the case of a limited liability company, membership interests and (d) any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person.

" Change in Law " shall mean (i) the adoption of any applicable law, rule or regulation after the date of this Agreement, (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 date of this Agreement, or (iii) compliance by any Lender (or its Applicable

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Lending Office) (or for purposes of Section 2.15(b ), by such Lender’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 date of this Agreement.

" Change of Control " shall mean either of the following events:

• (a) any "person" or "group" (within the meaning of Section 13(d) or 14(d) of the Exchange Act) has become, directly or indirectly, the "beneficial owner" (as defined in Rules 13d-3 (other than subsection (d) thereof) and 13d-5 under the Exchange Act), by way of merger, consolidation or otherwise of 40% or more of the voting power of the Borrower on a fully-diluted basis, after giving effect to the conversion and exercise of all outstanding warrants, options and other securities of the Borrower convertible into or exercisable for voting stock of the Borrower (whether or not such securities are then currently convertible or exercisable); or

  (b) during any period of two consecutive calendar years, individuals who at the beginning of such period constituted the board of directors of the Borrower together with any new members of such board of directors whose elections by such board of directors or whose nomination for election by the stockholders of the Borrower was approved by a vote of a majority of the members of such board of directors then still in office who either were directors at the beginning of such period or whose election or nomination for election was previously so approved cease for any reason to constitute a majority of the directors of the Borrower then in office.

" Charges " shall have the meaning set forth in Section 9.12 .

" Closing 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 9.2 .

" Code " shall mean the Internal Revenue Code of 1986, as amended from time to time, and the rules and regulations promulgated thereunder.

" Commitment " shall mean, with respect to each Lender, the obligation of such Lender to make Loans to the Borrower 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 2.19 , or in the case of a Person becoming a Lender after the Closing Date through an assignment of an existing Commitment, the amount of the assigned "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.

" Commitment Fee " shall have the meaning set forth in Section 2.11(b) .

" Commitment Termination Date " shall mean the earliest of (i) December 15, 2011, (ii) the date on which the Commitments are terminated pursuant to Section 2.6 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).

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" Compliance Certificate " shall mean a certificate from a Financial Officer of the Borrower in the form of, and containing the certifications set forth in, the certificate attached hereto as Exhibit 5.1(c) .

" Consolidated 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) the aggregate principal amount of Preferred Securities plus (c) the aggregate Minority Interests in Subsidiaries plus (d) Consolidated Funded Debt.

" Consolidated Funded Debt " shall mean, without duplication, the sum of (a) all indebtedness of the Borrower and its Subsidiaries for borrowed money, (b) all purchase money indebtedness of the Borrower and its Subsidiaries (other than trade accounts payable), (c) the principal portion of all obligations of the Borrower and its Subsidiaries under capital leases, (d) all commercial letters of credit and all performance and standby letters of credit issued or bankers’ acceptances created for the account of the Borrower or one of its Subsidiaries, including, without duplication, all unreimbursed draws thereunder, (e) all Guaranty Obligations of the Borrower and its Subsidiaries with respect to funded indebtedness of another Person of the types listed in clauses (a) through (d), (f) all indebtedness of another entity secured by a Lien on any property of the Borrower or any of its Subsidiaries whether or not such indebtedness has been assumed by the Borrower or any of its Subsidiaries, (g) all indebtedness of any partnership or unincorporated joint venture to the extent the Borrower or one of its Subsidiaries is legally obligated with respect thereto, net of any assets of such partnership or joint venture and in the case of the Capital Stock of such partnership or joint venture being held by a Subsidiary, limited to the net worth of such Subsidiary, (h) all obligations of the Borrower and its Subsidiaries to advance or provide funds or other support for the payment or purchase of funded indebtedness (including, without limitation, maintenance agreements, comfort letters or similar agreements or arrangements) (other than as may be given in respect of Atmos Energy Marketing, LLC ("AEM")) and (i) the principal balance outstanding under any synthetic lease, tax retention operating lease, off-balance sheet loan or similar off-balance sheet financing product of the Borrower or one of its Material Subsidiaries where such transaction is considered borrowed money indebtedness for tax purposes but is classified as an operating lease in accordance with GAAP; provided , however , that (x) neither the indebtedness of AEM incurred in connection with the purchase of gas by AEM for resale to the Borrower nor the guaranty by the Borrower or one of its Subsidiaries of such indebtedness shall be included in this definition if such indebtedness has been outstanding for less than two months from the date of its incurrence by AEM and (y) for the purposes of calculating the Debt to Capitalization Ratio, Consolidated Funded Debt will exclude (to the extent otherwise included in Consolidated Funded Debt) (i) any pension and other post-retirement benefits liability adjustments recorded in accordance with GAAP and (ii) an amount of Hybrid Securities not to exceed a total of 15% of Consolidated Capitalization.

" Consolidated Net Property " shall mean the Fixed Assets less, without duplication, the amount of accumulated depreciation and amortization attributable 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.

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" Credit Documents " shall mean, collectively, this Agreement, the Notes (if any), the Fee Letter, 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.

" Credit Exposure " shall mean, with respect to any Lender at any time, the outstanding principal amount of such Lender’s Loans.

" Debt to Capitalization Ratio " shall mean the ratio of (a) Consolidated Funded Debt to (b) Consolidated Capitalization.

" Declining Lender " shall have the meaning set forth in Section 2.22 .

" Default " shall mean any act, 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 2.10 ( b ).

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

" Environmental Laws " shall mean any current or future legal requirement of any Governmental Authority pertaining to (a) the protection of health, safety, and the indoor or outdoor environment, (b) the conservation, management, or use of natural resources and wildlife, (c) the protection or use of surface water and groundwater or (d) the management, manufacture, possession, presence, use, generation, transportation, treatment, storage, disposal, release, threatened release, abatement, removal, remediation or handling of, or exposure to, any hazardous or toxic substance or material or (e) pollution (including any release to land surface water and groundwater) and includes, without limitation, the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended by the Superfund Amendments and Reauthorization Act of 1986, 42 USC 9601 et seq., Solid Waste Disposal Act, as amended by the Resource Conservation and Recovery Act of 1976 and Hazardous and Solid Waste Amendment of 1984, 42 USC 6901 et seq. , Federal Water Pollution Control Act, as amended by the Clean Water Act of 1977, 33 USC 1251 et seq., Clean Air Act of 1966, as amended, 42 USC 7401 et seq. , Toxic Substances Control Act of 1976, 15 USC 2601 et seq., Hazardous Materials Transportation Act, 49 USC App. 1801 et seq. , Occupational Safety and Health Act of 1970, as amended, 29 USC 651 et seq. , Oil Pollution Act of 1990, 33 USC 2701 et seq. , Emergency Planning and Community Right-to-Know Act of 1986, 42 USC 11001 et seq. , National Environmental Policy Act of 1969, 42 USC 4321 et seq. , Safe Drinking Water Act of 1974, as amended, 42 USC 300(f) et seq. , any analogous implementing or successor law, and any amendment, rule, regulation, order, or directive issued thereunder.

" ERISA " shall mean the Employee Retirement Income Security Act of 1974, as amended, and any successor statute thereto, as interpreted by the rules and regulations thereunder, all as the same may be in effect from time to time. References to sections of ERISA shall be construed also to refer to any successor sections.

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" ERISA Affiliate " shall mean an entity, whether or not incorporated, which is under common control with the Borrower or any of its Subsidiaries within the meaning of Section 4001(a)(14) of ERISA, or is a member of a group which includes the Borrower or any of its Subsidiaries and which is treated as a single employer under Sections 414(b), (c), (m), or (o) of the Code.

" 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 1/100 ^th 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 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 Section 7.1 .

" Exchange Act " shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

" Excluded Taxes" shall mean with respect to the Administrative Agent, any Lender 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 2.17(e) .

" Existing Credit Agreement " shall mean that certain Revolving Credit Agreement, dated as of October 18, 2005, among the Borrower, the lenders identified therein and SunTrust Bank, as administrative agent, as amended, modified, supplemented or replaced from time to time.

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" Extending Lender " shall have the meaning set forth in Section 2.22 .

" Federal Funds Rate " shall mean, for any day, the rate per annum (rounded upwards, if necessary, to the next 1/100 ^th 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 September 5, 2006, executed by SunTrust Capital Markets, Inc. and accepted by the Borrower.

" Financial Officer " shall mean any one of the chief financial officer, the controller or the treasurer of the Borrower.

" Fitch " shall mean Fitch Ratings Ltd., or any successor or assignee of the business of such company in the business of rating securities.

" Fixed Assets " shall mean the assets of the Borrower and its Subsidiaries constituting "net property, plant and equipment" on the consolidated balance sheet of the Borrower and its Subsidiaries.

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

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

" Governmental Authority " shall mean any Federal, state, local or foreign court or governmental agency, authority, instrumentality or regulatory body.

" Guaranty Obligations " shall mean, with respect to any Person, without duplication, any obligations (other than endorsements in the ordinary course of business of negotiable instruments for deposit or collection) guaranteeing any indebtedness for borrowed money of any other Person in any manner, whether direct or indirect, and including without limitation any obligation, whether or not contingent, (a) to purchase any such indebtedness or other obligation or any property constituting security therefor, (b) to lease or purchase property, securities or services primarily for the purpose of assuring the owner of such indebtedness or (c) to otherwise assure or hold harmless the owner of such indebtedness or obligation against loss in respect thereof. The amount of any Guaranty Obligation hereunder shall (subject to any limitations set forth therein) be deemed to be an amount equal to the outstanding principal amount of the indebtedness in respect of which such Guaranty Obligation is made.

" Hedging Obligations " 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,

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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 " 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 " shall mean 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 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.

" Indemnified Taxes " shall mean Taxes other than Excluded Taxes.

" Information Memorandum " shall mean the Confidential Executive Summary dated October 2006 relating to the Borrower and the transactions contemplated by this Agreement and the other Credit Documents.

" Interest Period" shall mean with respect to 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;

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

" Lenders " shall have the meaning assigned to such term in the opening paragraph of this Agreement and shall include, where appropriate, each Additional Lender that joins this Agreement pursuant to Section 2.19 .

" 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 rate of interest determined by the Administrative Agent to be the average (rounded upward, if necessary, to the nearest 1/100 ^th 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 any mortgage, pledge, hypothecation, assignment, deposit arrangement, security interest, encumbrance, lien (statutory or otherwise), preference, priority or charge of any kind.

" Loan " shall mean a loan made by a Lender to the Borrower under its Commitment, which may either be a Base Rate Loan or a Eurodollar Loan.

" Material Adverse Effect " shall mean a material adverse effect on (a) the business, assets, liabilities, results of operations or financial condition of the Borrower and its Subsidiaries, taken as a whole, (b) the ability of the Borrower to perform its obligations under this Credit Agreement or (c) the validity or enforceability of this Credit Agreement, any of the other Credit Documents, or the rights and remedies of the Lenders hereunder or thereunder.

" Material Subsidiary " shall mean, at any date, a Subsidiary of the Borrower whose aggregate assets properly included under the category "property, plant and equipment" on the balance sheet of such Subsidiary, less the amount of depreciation and amortization attributable thereto, constitutes at least 10% of Consolidated Net Property as of such date; provided that if at any time the Borrower has Subsidiaries that are not Material Subsidiaries whose total aggregate assets under the category "property, plant and equipment" on the balance sheet of such Subsidiaries, less the amount of depreciation and amortization attributable thereto,

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constitute more than 20% of Consolidated Net Property as of such date the Borrower shall designate one or more of such Subsidiaries as Material Subsidiaries for the purposes of this Credit Agreement in order that all Subsidiaries of the Borrower, other than Material Subsidiaries, own not more than 20% of Consolidated Net Property.

" Maximum Rate " shall have the meaning set forth in Section 9.12 .

" Minority Interests " shall mean interests owned by Persons (other than the Borrower or a Subsidiary of the Borrower) in a Subsidiary of the Borrower in which less than 100% of all classes of the voting securities are owned by the Borrower or its Subsidiaries.

" Moody’s " shall mean Moody’s Investors Service, Inc., or any successor or assignee of the business of such company in the business of rating securities.

" Multiemployer Plan " shall mean a Plan covered by Title IV of ERISA which is a multiemployer plan as defined in Section 3(37) or 4001(a)(3) of ERISA.

" Multiple Employer Plan " shall mean a Plan covered by Title IV of ERISA, other than a Multiemployer Plan, which the Borrower or any ERISA Affiliate and at least one employer other than the Borrower or any ERISA Affiliate are contributing sponsors.

" 1959 Indenture " shall mean, collectively, that certain Indenture of Mortgage, dated as of July 15, 1959, granted by United Cities Gas Company (predecessor in interest to the Borrower) to City National Bank and Trust Company of Chicago and R. Emmett Hanley, as the original Trustees, and all Supplemental Indentures thereto, including, without limitation, that certain First Supplemental Indenture, dated as of November 1, 1960; that certain Second Supplemental Indenture, dated as of June 1, 1962; that certain Third Supplemental Indenture, dated as of February 1, 1963; that certain Fourth Supplemental Indenture, dated as of June 15, 1963; that certain Fifth Supplemental Indenture, dated as of November 15, 1964; that certain Sixth Supplemental Indenture, dated as of March 15, 1968; that certain Seventh Supplemental Indenture, dated as of August 1, 1970; that certain Eighth Supplemental Indenture, dated as of September 1, 1972; that certain Ninth Supplemental Indenture, dated as of January 1, 1974; that certain Tenth Supplemental Indenture, dated as of July 1, 1976; that certain Eleventh Supplemental Indenture, dated as of December 1, 1976; that certain Twelfth Supplemental Indenture, dated as of April 1, 1981; that certain Thirteenth Supplemental Indenture, dated as of May 1, 1982; that certain Fourteenth Supplemental Indenture, dated as of March 1, 1987; that certain Fifteenth Supplemental Indenture, dated as of October 1, 1987; that certain Sixteenth Supplemental Indenture, dated as of December 1, 1989; that certain Seventeenth Supplemental Indenture, dated as of April 1, 1990; that certain Eighteenth Supplemental Indenture, dated as of June 1, 1991; that certain Nineteenth Supplemental Indenture, dated as of May 1, 1992; that certain Twentieth Supplemental Indenture, dated as of December 1, 1992; that certain Twenty-First Supplemental Indenture, dated as of February 5, 1997; and that certain Twenty-Second Supplemental Indenture, dated as of July 29, 1997.

" 1998 Indenture " shall mean, collectively, that certain Indenture, dated as of July 15, 1998, granted by the Borrower to US Bank Trust National Association, as Trustee, and all Supplemental Indentures thereto.

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" Non-Recourse Indebtedness " shall mean, at any time, indebtedness incurred after the date hereof by the Borrower or a Material Subsidiary in connection with the acquisition of property or assets by the Borrower or such Material Subsidiary or the financing of the construction of or improvements on property, whenever acquired, that, under the terms of such indebtedness and pursuant to applicable law, the recourse at such time and thereafter of the lenders with respect to such indebtedness is limited to the property or assets so acquired, or such construction or improvements, and any accession or additions thereto and proceeds thereof, including indebtedness as to which a performance or completion guarantee or similar undertaking was initially applicable to such indebtedness or the related property or assets if such guarantee or similar undertaking has been satisfied and is no longer in effect at such time. Indebtedness which is otherwise Non-Recourse Indebtedness will not lose its character as Non-Recourse Indebtedness because there is recourse to the Borrower, any Material Subsidiary, any guarantor or any other Person for (a) environmental representations, warranties or indemnities, or (b) indemnities for and liabilities arising from (i) fraud, (ii) misrepresentation, (iii) misapplication or non-payment of rents, profits, insurance and condemnation proceeds and other sums actually received from secured assets to be paid to the lender, (iv) waste, (v) materialmen’s and mechanics’ liens or (vi) similar matters.

" 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 Commitment, in substantially the form of Exhibit A .

" Notice of Borrowing " shall have the meaning set forth in Section 2.3 .

" 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 2.5 ( b ).

" Obligations " shall mean all amounts owing by the Borrower to the Administrative Agent or any Lender pursuant to or in connection with this Agreement or any other Credit 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 reasonable fees and expenses of counsel to the Administrative Agent and any Lender incurred pursuant to this Agreement or any other Credit 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 all obligations and liabilities incurred in connection with collecting and enforcing the foregoing, together with all renewals, extensions, modifications or refinancings thereof.

" 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 Credit Document.

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" Participant " shall have the meaning set forth in Section 9.4(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.

" PBGC " shall mean the Pension Benefit Guaranty Corporation established pursuant to Subtitle A of Title IV of ERISA and any successor thereto.

" Permitted Lien " shall mean, with respect to any asset, the Liens permitted to exist on such asset under Section 6.6 .

" Person " shall mean any individual, partnership, joint venture, firm, corporation, association, trust, limited liability company or other enterprise (whether or not incorporated), or any government or political subdivision or any agency, department or instrumentality thereof.

" Plan " shall mean any employee benefit plan (as defined in Section 3(3) of ERISA) which is covered by ERISA and with respect to which the Borrower or any ERISA Affiliate is (or, if such plan were terminated at such time, would under Section 4069 of ERISA be deemed to be) an "employer" within the meaning of Section 3(5) of ERISA.

" Preferred Securities " shall mean, at any date, any equity interests in the Borrower, in a Special Purpose Financing Subsidiary of the Borrower or in any other Subsidiary of the Borrower (such as those known as "TECONS", "MIPS" or "RHINOS"): (a) that are not (i) required to be redeemed or redeemable at the option of the holder thereof prior to the fifth anniversary of the Maturity Date or (ii) convertible into or exchangeable for (unless solely at the option of the Borrower or such Subsidiary of the Borrower) equity interests referred to in clause (i) above or indebtedness having a scheduled maturity, or requiring any repayments or prepayments of principal or any sinking fund or similar payments in respect of principal or providing for any such repayment, prepayment, sinking fund or other payment at the option of the holder thereof prior to the fifth anniversary of the Maturity Date and (b) as to which, at such date, the Borrower or such Subsidiary of the Borrower has the right to defer the payment of all dividends and other distributions in respect thereof for the period of at least 19 consecutive quarters beginning at such date.

" Pro Rata Share " shall mean (i) 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 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 Credit Exposure of all Lenders) and (ii) with respect to all Commitments of any Lender at any time, the numerator of which shall be the sum of such Lender’s Commitments (or if such Commitments have been terminated or expired or the Loans have been declared to be due and payable, such Lender’s Credit Exposure) and the denominator of which shall be the sum of all Lenders’ Commitments (or if such Commitments have been terminated or expired or the Loans have been declared to be due and payable, all Credit Exposure of all Lenders funded under such Commitments).

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" Register " shall have the meaning set forth in Section 9.4(c) .

" Regulation A, D, T, U, or X " shall mean Regulation A, D, T, U or X, respectively, of the Board of Governors of the Federal Reserve System (or any successor body) as from time to time in effect, any amendment thereto and any successor to all or a portion thereof.

" 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.

" Replacement Lender " shall have the meaning set forth in Section 2.22 .

" Reportable Event " shall mean a "reportable event" as defined in Section 4043 of ERISA with respect to which the notice requirements to the PBGC have not been waived.

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

" S&P " shall mean Standard & Poor’s Ratings Services, a division of McGraw Hill, Inc., or any successor or assignee of the business of such division in the business of rating securities.

" SEC " shall mean the Securities and Exchange Commission or any successor agency.

" Securities Act " shall mean the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.

" Single Employer Plan " shall mean any Plan which is covered by Title IV of ERISA, but which is not a Multiemployer Plan or a Multiple Employer Plan.

" Special Purpose Financing Subsidiary " shall mean a Subsidiary of the Borrower that has no direct or indirect interest in the business of the Borrower and its other Subsidiaries and was formed solely for the purpose of issuing Preferred Securities.

" Subsidiary " shall mean, as to any Person, (a) any corporation more than 50% of whose stock of any class or classes having by the terms thereof ordinary voting power to elect a majority of the directors of such corporation (irrespective of whether or not, at the time, any class or classes of such corporation shall have or might have voting power by reason of the happening

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of any contingency) is at the time owned by such Person directly or indirectly through Subsidiaries and (b) any partnership, association, joint venture, limited liability company or other entity in which such Person directly or indirectly through Subsidiaries has more than 50% voting equity interest at any time.

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

" Termination Event " shall mean (a) with respect to any Single Employer Plan, the occurrence of a Reportable Event or the substantial cessation of operations (within the meaning of Section 4062(e) of ERISA), (b) the withdrawal of the Borrower or any ERISA Affiliate from a Multiple Employer Plan during a plan year in which it was a substantial employer (as such term is defined in Section 4001(a)(2) of ERISA), or the termination of a Multiple Employer Plan, (c) the distribution of a notice of intent to terminate or the actual termination of a Plan pursuant to Section 4041(a)(2) or 4041A of ERISA, (d) the institution of proceedings to terminate or the actual termination of a Plan by the PBGC under Section 4042 of ERISA, (e) any event or condition which might reasonably constitute grounds under Section 4042 of ERISA for the termination of, or the appointment of a trustee to administer, any Plan, or (f) the complete or partial withdrawal of the Borrower or any ERISA Affiliate from a Multiemployer Plan.

" Total Assets " shall mean all assets of the Borrower and its Subsidiaries as shown on its most recent quarterly consolidated balance sheet, as determined in accordance with GAAP.

" 2001 Indenture " shall mean, collectively, that certain Indenture, dated as of May 22, 2001, granted by the Borrower to SunTrust Bank, Atlanta, as Trustee, and all Supplemental Indentures thereto.

" 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.

" Utilization Fee " shall have the meaning set forth in Section 2.11(c) .

Section 1.2. Classifications of Loans and Borrowings . For purposes of this Agreement, Loans may be classified and referred to by Type (e.g. a "Eurodollar Loan", or "Base Rate Loan"). Borrowings also may be classified and referred to by Type (e.g. "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 statements 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 the covenant in Section 5.2 to eliminate the effect of any change in GAAP on the operation of such covenant (or if the Administrative Agent notifies

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the Borrower that the Required Lenders wish to amend Section 5.2 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 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, 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 Commitment) to make Loans to the Borrower in accordance with Section 2.2 .

Section 2.2. Loans . Subject to the terms and conditions set forth herein, each Lender severally agrees to make 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 (a) such Lender’s Credit Exposure exceeding such Lender’s Commitment or (b) the sum of the aggregate Credit Exposures of all Lenders exceeding the Aggregate Commitment Amount. During the Availability Period, the Borrower shall be entitled to borrow, prepay and reborrow 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.

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Section 2.3. Procedure for Borrowings . The Borrower shall give the Administrative Agent written notice (or telephonic notice promptly confirmed in writing) of each Borrowing substantially in the form of Exhibit 2.3 (a " Notice of Borrowing ") (x) prior to 11:00 a.m. (New York time) one (1) Business Day prior to 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 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 Loan 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 Borrowing shall consist entirely of Base Rate Loans or Eurodollar Loans, as the Borrower may request. The aggregate principal amount of each Eurodollar Borrowing shall be not less than $5,000,000 or a larger multiple of $1,000,000, and the aggregate principal amount of each Base Rate Borrowing shall not be less than $1,000,000 or a larger multiple of $100,000; provided , that Base Rate Loans made pursuant to Section 2.4 may be made in lesser amounts as provided therein. At no time shall the total number of Eurodollar Borrowings outstanding exceed six. Promptly following the receipt of a Notice of Borrowing in accordance herewith, the Administrative Agent shall advise each Lender of the details thereof and the amount of such Lender’s Loan to be made as part of the requested Borrowing.

Section 2.4. 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 11:00 a.m. (New York time) to the Administrative Agent at the Payment Office. 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.

(b) Unless the Administrative Agent shall have been notified by any Lender prior to 5:00 p.m. (New York time) one (1) Business Day prior to the date of a 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

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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 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 2.5. 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 2.5 . 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.

(b) To make an election pursuant to this Section 2.5 , 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 2.5 attached hereto (a " Notice of Conversion/Continuation ") that is to be converted or continued, as the case may be, (x) prior to 10:00 a.m. (New York time) one (1) Business Day prior to 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 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 .

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(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 2.6. Optional Reduction and Termination of Commitments .

(a) Unless previously terminated, all Commitments shall terminate on the 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 Commitments in part or terminate the Aggregate Commitments in whole; provided , that (i) any partial reduction shall apply to reduce proportionately and permanently the Commitment of each Lender, (ii) any partial reduction pursuant to this Section 2.6 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 Commitment Amount to an amount less than the outstanding Credit Exposures of all Lenders.

Section 2.7. Repayment of Loans . The outstanding principal amount of all Loans shall be due and payable (together with accrued and unpaid interest thereon) on the Commitment Termination Date.

Section 2.8. Evidence of Indebtedness . 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 Commitment of each Lender, (ii) the amount of each Loan made hereunder by each Lender, the Type thereof and the Interest Period applicable thereto, (iii) the date of each continuation thereof pursuant to Section 2.5 , (iv) the date of each conversion of all or a portion thereof to another Type pursuant to Section 2.5 , (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;

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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.

(a) At the request of any Lender at any time, the Borrower agrees that it will execute and deliver to such Lender a Note payable to the order of such Lender.

Section 2.9. Optional Prepayments . The Borrower shall have the right at any time and from time to time to prepay any Borrowing, in whole or in part, 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, and (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. 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 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 2.10(c ); 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 2.16 . Each partial prepayment of any Loan shall be in an amount that would be permitted in the case of an advance of a Borrowing of the same Type pursuant to Section 2.3 . Each prepayment of a Borrowing shall be applied ratably to the Loans comprising such Borrowing.

Section 2.10. 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) Upon the occurrence, and during the continuation, of an Event of Default under Section 7.1(a) or, at the option of the Required Lenders, any other Event of Default, 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 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.

(c) 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

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March, June, September and December and on the Commitment Termination Date. Interest on all outstanding Eurodollar Loans shall be payable on the last day of each Interest Period applicable thereto, and, in the case of any Eurodollar Loans having an Interest Period in excess of three months, on each day which occurs every three months after the initial date of such Interest Period, and on the 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.

(d) 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 2.11. Fees .

(a) The Borrower shall pay to the Administrative Agent for its own account fees in the amounts and at the times previously agreed upon in writing by the Borrower and the Administrative Agent.

(b) The Borrower agrees to pay to the Administrative Agent for the account of each Lender a commitment fee (the " Commitment Fee "), which shall accrue at the Applicable Commitment Fee Percentage per annum (determined daily in accordance with Schedule I ) on the daily amount of the unused Commitment of such Lender during the Availability Period.

(c) The Borrower agrees to pay to the Administrative Agent for the account of each Lender a utilization fee (the " Utilization Fee "), which shall accrue at the Applicable Utilization Fee Percentage per annum (determined daily in accordance with Schedule I ) on the daily amount of the Loans of such Lender during the Availability Period, but only to the extent on any day that the principal amount of the outstanding Loans is equal to or greater than fifty percent (50%) of the Aggregate Commitments; provided that if on the Commitment Termination Date the outstanding Loans are equal to or greater than fifty percent (50%) of the Aggregate Commitments, then such Utilization Fee shall continue to accrue on the daily amount of the outstanding Loans from and including the Commitment Termination Date to but excluding the date on which no Loans are outstanding.

(d) The Borrower shall pay to the Administrative Agent, for the ratable benefit of each Lender, the upfront fees previously agreed upon by the Borrower and the Administrative Agent, which shall be due and payable on the Closing Date.

(e) Accrued fees under paragraph (b) and (c) above shall be payable quarterly in arrears on the last day of each March, June, September and December, commencing on December 31, 2006 and on the Commitment Termination Date. Utilization Fees that accrue after the Commitment Termination Date shall be payable on demand.

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Section 2.12. Computation of Interest and Fees . All computations of interest and fees hereunder shall be made on the basis of a year of 360 days for the actual number of days (including the first day but excluding the last day) occurring in the period for which such interest or fees are payable (to the extent computed on the basis of days elapsed). 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 2.13. 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 in good faith (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 of making, funding or maintaining their 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. 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 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 Borrowing for which a Notice of Borrowing has previously been given that it elects not to borrow on such date, then such Borrowing shall be made as a Base Rate Borrowing.

Section 2.14. 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 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 Borrowing, such Lender’s Loan shall be made as a Base Rate Loan as part of the same 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

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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 2.15. 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

      (ii) impose on any Lender or the eurodollar interbank market any other condition affecting this Agreement or any Eurodollar Loans made by such Lender;

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 reduce the amount received or receivable by such Lender hereunder (whether of 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 for such additional costs incurred or reduction suffered.

(b) If any Lender 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 capital (or on the capital of such Lender’s parent corporation) as a consequence of its obligations hereunder to a level below that which such Lender or such Lender’s parent corporation could have achieved but for such Change in Law (taking into consideration such Lender’s policies or the policies of such Lender’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 such Lender’s parent corporation for any such reduction suffered.

(c) A certificate of a Lender setting forth the amount or amounts necessary to compensate such Lender or such Lender’s parent corporation, as the case may be, specified in paragraph (a) or (b) of this Section 2.15 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 such amount or amounts within 10 days after receipt thereof.

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(d) Failure or delay on the part of any Lender to demand compensation pursuant to this Section 2.15 shall not constitute a waiver of such Lender’s right to demand such compensation.

Section 2.16. 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), then, in any such event, the Borrower shall compensate each Lender, within five (5) Business Days after written demand from such Lender, for any loss, reasonable cost or expense directly attributable to such event. 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 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 2.16 submitted to the Borrower by any Lender (with a copy to the Administrative Agent) shall be conclusive, absent manifest error.

Section 2.17. 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 2.17 ) the Administrative Agent or any Lender (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 and each Lender, 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 or such Lender, 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

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amounts payable under this Section 2.17 ) 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 by the Administrative Agent on its own behalf or on behalf of a Lender, 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 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).

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

(a) The Borrower shall make each payment required to be made by it hereunder (whether of principal, interest, fees, or amounts payable under Sections 2.15 , 2.16 or 2.17 , 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 that payments pursuant to Sections 2.15 , 2.16 and 2.17 and 9.3 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 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, interest and fees then due hereunder, such funds shall be applied (i) first, towards payment of interest and fees then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of interest and fees then due to such parties, and (ii) second, towards payment of principal then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of principal then due to such parties.

(c) If any Lender shall, by exercising any right of set-off or counterclaim or otherwise, obtain payment in respect of any principal of or interest on any of its Loans that would result in such Lender receiving payment of a greater proportion of the aggregate amount of its Loans and accrued interest thereon than the proportion received by any other Lender, then the Lender receiving such greater proportion shall purchase (for cash at face value) participations in the Loans of other Lenders to the extent necessary so that the benefit of all such payments shall be shared by the Lenders ratably in accordance with the aggregate amount of principal of and accrued interest on their respective Loans; provided , that (i) if any such participations are purchased and all or any portion of the payment giving rise thereto is recovered, such participations shall be rescinded and the purchase price restored to the extent of such recovery, without interest, and (ii) the provisions of this 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 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

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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 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 the amount or amounts due. In such event, if the Borrower has not in fact made such payment, then each of the Lenders severally agrees to repay to the Administrative Agent forthwith on demand the amount so distributed to such Lender with interest thereon, for each day from and including the date such amount is distributed to it to but excluding the date of payment 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 ), 2.18(d ), or 9.3(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 2.19. Increase of Commitments; Additional Lenders .

(a) So long as no Event of Default has occurred and is continuing, from time to time after the Closing Date and provided that the Borrower shall have received 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 Borrower, Borrower may, upon at least 30 days’ written notice to the Administrative Agent (who shall promptly provide a copy of such notice to each Lender), propose to increase the Aggregate Commitments by an aggregate amount not to exceed $300,000,000 (the amount of any such increase, the " Additional Commitment Amount "). Each Lender shall have the right, for a period of 20 days following receipt of such notice, to elect by written notice to the Borrower and the Administrative Agent to increase its Commitment by a principal amount equal to its Pro Rata Share of the Additional Commitment Amount. No Lender (or any successor thereto) shall have any obligation to increase its Commitment or its other obligations under this Agreement and the other Credit Documents, and any decision by a Lender to increase its Commitment shall be made in its sole discretion independently from any other Lender.

(b) If any Lender shall not elect to increase its Commitment pursuant to subsection (a) of this Section 2.19 , 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

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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 acceptable to the Administrative Agent, which acceptance will not be unreasonably withheld or delayed. The sum of the increases in the Commitments of the existing Lenders pursuant to this subsection (b) plus the Commitments of the Additional Lenders shall not in the aggregate exceed the Additional Commitment Amount.

(c) An increase in the Aggregate Commitment Amount pursuant to this Section 2.19 shall become effective upon the receipt by the Administrative Agent of a supplement or joinder in form and substance reasonably satisfactory to the Administrative Agent executed by the Borrower and by each Additional Lender and by each existing Lender whose Commitment is to be increased, setting forth the new 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 incre