Document:

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                                                                    EXHIBIT 10.1

                                                               EXECUTION VERSION

                           SECOND AMENDED AND RESTATED

                                CREDIT AGREEMENT

                                      AMONG

                         RANGE RESOURCES CORPORATION AND

                       GREAT LAKES ENERGY PARTNERS, L.L.C.

                                  AS BORROWERS,

                                       AND

                                  BANK ONE, NA

                        AND THE INSTITUTIONS NAMED HEREIN

                                   AS LENDERS,

                                  BANK ONE, NA,

                             AS ADMINISTRATIVE AGENT

                                       AND

                         BANC ONE CAPITAL MARKETS, INC.

                      AS SOLE LEAD ARRANGER AND BOOKRUNNER

                                  JUNE 23, 2004

                          $600,000,000 REVOLVING CREDIT

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                                TABLE OF CONTENTS

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                                                                                                                PAGE NO.
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1.    Definitions.............................................................................................     2
2.    Commitments of the Lenders..............................................................................    18
      (a)      Terms of Commitment............................................................................    18
      (b)      Procedure for Borrowing........................................................................    18
      (c)      Letters of Credit..............................................................................    19
      (d)      Procedure for Obtaining Letters of Credit......................................................    20
      (e)      Voluntary Reduction of Commitment..............................................................    21
      (f)      Mandatory Commitment Reductions................................................................    21
      (g)      Several Obligations............................................................................    21
      (h)      Type and Number of Advances....................................................................    21
3.    Notes Evidencing Loans..................................................................................    21
      (a)      Form of Notes..................................................................................    21
      (b)      Issuance of Additional Notes...................................................................    22
      (c)      Interest Rates.................................................................................    22
      (d)      Payment of Interest............................................................................    22
      (e)      Payment of Principal...........................................................................    22
      (f)      Payment to Lenders.............................................................................    22
      (g)      Sharing of Payments, Etc.......................................................................    22
      (h)      Non-Receipt of Funds by the Agent..............................................................    23
4.    Interest Rates..........................................................................................    23
      (a)      Options........................................................................................    23
      (b)      Interest Rate Determination....................................................................    24
      (c)      Conversion Option..............................................................................    24
      (d)      Recoupment.....................................................................................    25
      (e)      Interest Rates Applicable After Default........................................................    25
5.    Special Provisions Relating to Loans....................................................................    25
      (a)      Unavailability of Funds or Inadequacy of Pricing...............................................    25
      (b)      Change in Laws.................................................................................    25
      (c)      Increased Cost or Reduced Return...............................................................    26
      (d)      Discretion of Lender as to Manner of Funding...................................................    28
      (e)      Breakage Fees..................................................................................    28
      (f)      Joint and Several Liability....................................................................    29
      (g)      Replacement of Lenders.........................................................................    29
      (h)      Designated Senior Debt.........................................................................    30
6.    Collateral Security.....................................................................................    30
7.    Borrowing Base..........................................................................................    31
      (a)      Borrowing Base.................................................................................    31
      (b)      Subsequent Determinations of Borrowing Base....................................................    31
8.    Fees....................................................................................................    32
      (a)      Unused Commitment Fee..........................................................................    32
      (b)      Agent and Arranger Fees........................................................................    33
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                                       ii

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9.    Prepayments.............................................................................................    33
      (a)      Voluntary Prepayments..........................................................................    33
      (b)      Mandatory Prepayment For Borrowing Base Deficiency.............................................    33
10.   Representations and Warranties..........................................................................    33
      (a)      Creation and Existence.........................................................................    34
      (b)      Power and Authority............................................................................    34
      (c)      Binding Obligations............................................................................    34
      (d)      No Legal Bar or Resultant Lien.................................................................    34
      (e)      No Consent.....................................................................................    34
      (f)      Financial Condition............................................................................    35
      (g)      Liabilities....................................................................................    35
      (h)      Litigation.....................................................................................    35
      (i)      Taxes; Governmental Charges....................................................................    35
      (j)      Titles, Etc....................................................................................    35
      (k)      Defaults.......................................................................................    35
      (l)      Casualties; Taking of Properties...............................................................    36
      (m)      Use of Proceeds; Margin Stock..................................................................    36
      (n)      Location of Business and Offices...............................................................    36
      (o)      Compliance with the Law........................................................................    36
      (p)      No Material Misstatements......................................................................    37
      (q)      Not A Utility..................................................................................    37
      (r)      ERISA..........................................................................................    37
      (s)      Public Utility Holding Company Act.............................................................    37
      (t)      Legal Names....................................................................................    37
      (u)      Environmental Matters..........................................................................    37
      (v)      Liens..........................................................................................    38
      (w)      Solvency.......................................................................................    38
      (x)      Insurance......................................................................................    38
      (y)      Consummation of the GLEP Acquisition...........................................................    38
11.   Conditions of Lending...................................................................................    39
12.   Affirmative Covenants...................................................................................    42
      (a)      Financial Statements and Reports...............................................................    42
      (b)      Certificates of Compliance.....................................................................    43
      (c)      Accountants' Certificate.......................................................................    44
      (d)      Taxes and Other Liens..........................................................................    44
      (e)      Compliance with Laws...........................................................................    44
      (f)      Further Assurances.............................................................................    44
      (g)      Performance of Obligations.....................................................................    44
      (h)      Insurance......................................................................................    45
      (i)      Accounts and Records...........................................................................    45
      (j)      Right of Inspection............................................................................    45
      (k)      Notice of Certain Events.......................................................................    46
      (l)      ERISA Information and Compliance...............................................................    46
      (m)      Environmental Reports and Notices..............................................................    46
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                                       iii
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      (n)      Compliance and Maintenance.....................................................................    47
      (o)      Operation of Properties........................................................................    47
      (p)      Compliance with Leases and Other Instruments...................................................    47
      (q)      Certain Additional Assurances Regarding Maintenance and Operations of
               Properties.....................................................................................    48
      (r)      Sale of Certain Assets/Prepayment of Proceeds..................................................    48
      (s)      Title Matters..................................................................................    48
      (t)      Curative Matters...............................................................................    49
      (u)      Change of Principal Place of Business..........................................................    49
      (v)      Additional Collateral..........................................................................    49
13.   Negative Covenants......................................................................................    50
      (a)      Liens and Asset Sales..........................................................................    50
      (b)      Current Ratio..................................................................................    50
      (c)      Funded Debt Leverage Ratio.....................................................................    50
      (d)      Consolidations and Mergers.....................................................................    50
      (e)      Debts, Guaranties and Other Obligations........................................................    51
      (f)      Restricted Payments............................................................................    52
      (g)      Loans, Advances and Investments................................................................    53
      (h)      Receivables and Payables.......................................................................    53
      (i)      Nature of Business.............................................................................    53
      (j)      Transactions with Affiliates...................................................................    53
      (k)      Rate Management Transactions...................................................................    53
      (l)      Amendment to Articles of Incorporation or Bylaws...............................................    54
      (m)      Issuance of Preferred Stock....................................................................    54
      (n)      Payment or Prepayment of Other Debt............................................................    54
      (o)      Sale and Leaseback Transactions and other Off-Balance Sheet Liabilities........................    54
      (p)      Modifications to the Junior Securities.........................................................    54
14.   Events of Default.......................................................................................    55
15.   The Agent and the Lenders...............................................................................    57
      (a)      Appointment and Authorization..................................................................    57
      (b)      Note Holders...................................................................................    58
      (c)      Consultation with Counsel......................................................................    58
      (d)      Documents......................................................................................    59
      (e)      Resignation or Removal of Agent................................................................    59
      (f)      Responsibility of Agent........................................................................    59
      (g)      Independent Investigation......................................................................    60
      (h)      Indemnification................................................................................    61
      (i)      Benefit of Section 15..........................................................................    61
      (j)      Pro Rata Treatment.............................................................................    61
      (k)      Assumption as to Payments......................................................................    62
      (l)      Other Financings...............................................................................    62
      (m)      Interests of Lenders...........................................................................    62
      (n)      Investments....................................................................................    62
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      (o)      Delegation to Affiliates.......................................................................    63
      (p)      Execution of Collateral Documents..............................................................    63
      (q)      Collateral Releases............................................................................    63
      (r)      Co-Agents, Documentation Agent, Syndication Agent, etc.........................................    63
16.   Exercise of Rights......................................................................................    63
17.   Notices.................................................................................................    64
18.   Expenses................................................................................................    64
19.   Indemnity...............................................................................................    65
20.   Non-Liability of Lenders................................................................................    65
21.   Governing Law...........................................................................................    66
22.   Invalid Provisions......................................................................................    66
23.   Maximum Interest Rate...................................................................................    66
24.   Amendments and Waivers..................................................................................    67
25.   Multiple Counterparts...................................................................................    67
26.   Conflict................................................................................................    67
27.   Survival................................................................................................    67
28.   Parties Bound...........................................................................................    67
29.   Assignments and Participations..........................................................................    68
30.   Confidentiality.........................................................................................    69
31.   Choice of Forum: Consent to Service of Process and Jurisdiction.........................................    70
32.   Waiver of Jury Trial....................................................................................    70
33.   Other Agreements........................................................................................    71
34.   Financial Terms.........................................................................................    71
35.   Interpretation, etc.....................................................................................    71
36.   USA PATRIOT ACT NOTIFICATION............................................................................    71
37.   Original Credit Agreement...............................................................................    71
38.   Tri-Party Loan..........................................................................................    72
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ANNEXES
Annex "A"     -   Commitment Percentages

EXHIBITS
Exhibit "A"   -   Form of Notice of Borrowing
Exhibit "B"   -   Form of Note
Exhibit "C"   -   Form of Guaranty
Exhibit "D"   -   Form of Certificate of Compliance
Exhibit "E"   -   Form of Assignment and Acceptance Agreement

SCHEDULES
Schedule 1    -   Liens
Schedule 2    -   Financial Condition
Schedule 3    -   Liabilities
Schedule 4    -   Litigation
Schedule 5    -   Subsidiaries
Schedule 6    -   Environmental Matters
Schedule 7    -   Title Matters
Schedule 8    -   Curative Matters
</TABLE>

                                       vi

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                  SECOND AMENDED AND RESTATED CREDIT AGREEMENT

      THIS SECOND AMENDED AND RESTATED CREDIT AGREEMENT (as the same may from
time to time be amended, modified, supplemented or restated, hereinafter
referred to as this "Agreement") executed as of the 23rd day of June, 2004, by
and among RANGE RESOURCES CORPORATION, a Delaware corporation (the "Company")
and GREAT LAKES ENERGY PARTNERS, L.L.C., a Delaware limited liability company
("GLEP"; together with the Company, and each of their successors and permitted
assigns, the "Borrowers" and each individually, a "Borrower") and BANK ONE, NA,
a national banking association, and each of the financial institutions which is
a party hereto (as evidenced by the signature pages to this Agreement) or which
may from time to time become a party hereto pursuant to the provisions of
Section 29 or any successor or assignee thereof (hereinafter collectively
referred to as "Lenders", and individually, "Lender") and Bank One, NA, as
Administrative Agent, Fleet National Bank, as Co-Documentation Agent, Fortis
Capital Corp., as Co-Documentation Agent, Calyon, New York Branch, as
Co-Syndication Agent, Harris Nesbitt Financing, Inc., as Co-Syndication Agent,
Banc One Capital Markets, Inc., as Sole Lead Arranger and Sole Bookrunner.

                              W I T N E S S E T H:

      WHEREAS, the Company, certain of the Lenders and Bank One, as
administrative agent are parties to that certain Amended and Restated Credit
Agreement dated as of May 2, 2002 pursuant to which the lenders thereunder
agreed to provide the Company certain credit facilities in the form therein
described (as amended, the "Original Range Credit Agreement"); and

      WHEREAS, GLEP, certain of the Lenders and Bank One, as administrative
agent, are parties to that certain Restated Credit Agreement dated as of May 3,
2002 pursuant to which the lenders thereunder agreed to provide GLEP certain
credit facilities in the form therein described (as amended, the "Original GLEP
Credit Agreement" and together with the Original Range Credit Agreement, the
"Original Credit Agreements"); and

      WHEREAS, the Company, Range Holdco, Inc., a Delaware corporation, Marbel
Holdco, Inc., an Ohio corporation ("Marbel"), and FirstEnergy Corp., an Ohio
corporation ("FirstEnergy") are parties to that certain Purchase and Sale
Agreement dated June 1, 2004 ("GLEP Acquisition Agreement"), providing for the
acquisition by the Company of all of the outstanding membership interests of
GLEP not already indirectly owned by the Company (the "GLEP Acquisition"); and

      WHEREAS, immediately following the acquisition of the membership interests
of GLEP from Marbel pursuant to the GLEP Acquisition Agreement (the "Acquired
Interests"), the Company will transfer the Acquired Interests to Range Energy I,
Inc., a Delaware corporation and an indirect wholly-owned Subsidiary (as defined
in Section 1) of the Company (the "Acquired Interests Transfer"); and

Second Amended and Restated Credit Agreement - Page 1

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      WHEREAS, in connection with and subject to the consummation of the GLEP
Acquisition and the transfer of the Acquired Interests, the Company and GLEP
have each requested that the Lenders (as defined in Section 1) and Agent (as
defined in Section 1) agree to make certain changes to the Original Credit
Agreements and have each requested that the Original Credit Agreements and the
schedules thereto be consolidated, amended and restated in their entirety; and

      WHEREAS, such Lenders and the Agent are willing to agree to such requests
subject to the conditions and on the terms herein set forth and Key Bank and
Wachovia Bank, National Association (the "June 2004 New Lenders") are each
willing to become a party as a Lender to this Agreement.

      NOW, THEREFOR, in consideration of the mutual covenants and agreements
herein contained, the parties hereby agree that the Original Credit Agreements
are hereby consolidated, amended and restated in their entirety to read herein
and as follows:

      1. DEFINITIONS. When used herein the following terms shall have the
following meanings:

      Acquired Interests is used herein as defined in the recitals hereof.

      Acquired Interests Transfer is used herein as defined in the recitals
hereof.

      Advance means a borrowing hereunder (i) made by some or all of the Lenders
on the same Borrowing Date, or (ii) converted or continued by the Lenders on the
same date of conversion or continuation, consisting, in either case, of the
aggregate amount of the several Loans of the same type and, in the case of LIBOR
Loans, for the same Interest Period.

      Advance Payment Contract means any contract whereby any Borrower or any
Guarantor either (a) receives or becomes entitled to receive (either directly or
indirectly) any payment (an "Advance Payment") to be applied toward payment of
the purchase price of hydrocarbons produced or to be produced from the Oil and
Gas Properties and which Advance Payment is, or is to be, paid in advance of
actual delivery of such production to or for the account of the purchaser
regardless of such production, including any volumetric production payment, or
(b) grants an option or right of refusal to the purchaser to take delivery of
such production in lieu of payment, and, in either of the foregoing instances,
the Advance Payment is, or is to be, applied as payment in full for such
production when sold and delivered or is, or is to be, applied as payment for a
portion only of the purchase price thereof or of a percentage or share of such
production; provided that inclusion of the standard "take or pay" provision in
any gas sales or purchase contract or any other similar contract shall not, in
and of itself, constitute such contract as an Advance Payment Contract for the
purposes hereof.

      Affected Lender is used herein as defined in Section 5(g).

Second Amended and Restated Credit Agreement  -  Page 2

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      Affiliate means any Person which, directly or indirectly, controls, is
controlled by or is under common control with the relevant Person. For the
purposes of this definition, "control" (including, with correlative meanings,
the terms "controlled by" and "under common control with"), as used with respect
to any Person, shall mean a member of the board of directors, a partner or an
officer of such Person, or any other Person with possession, directly or
indirectly, of the power to direct or cause the direction of the management and
policies of such Person, through the ownership (of record, as trustee, or by
proxy) of voting shares, partnership interests or voting rights, through a
management contract or otherwise. Any Person owning or controlling directly or
indirectly ten percent or more of the voting shares, partnership interests or
voting rights, or other equity interest of another Person shall be deemed to be
an Affiliate of such Person.

      Agent means Bank One in its capacity as contractual representative of the
Lenders pursuant to Section 15, and not in its individual capacity as a Lender,
and any successor Administrative Agent appointed pursuant to Section 15.

      Agreement is used herein as defined in the preamble hereof.

      Alternate Base Rate means, for any day, a rate of interest per annum equal
to the higher of (i) the Prime Rate for such day and (ii) the sum of the Federal
Funds Effective Rate for such day plus -1/2% per annum

      Applicable Margin means, (i) with respect to any Advance of any Type at
any time, the percentage rate per annum which is applicable at such time with
respect to Advances of such Type set forth in the Pricing Schedule, and (ii)
with respect to the determination of the Commitment Fee at any time, the
percentage rate per annum which is applicable at such time with respect to the
Commitment Fee set forth in the Pricing Schedule.

      Arranger means Banc One Capital Markets, Inc., in its capacity as Sole
Lead Arranger under this Agreement.

      Assignment and Acceptance means a document substantially in the form of
Exhibit "E" hereto.

      Available Commitment means, at any time, the Commitment then in effect
minus the Total Outstandings.

      Bank One means Bank One, NA, a national banking association, having its
principal office in Chicago, Illinois, in its individual capacity, and its
successors.

      Base Rate means, for any day, a rate of interest per annum equal to (i)
the Alternate Base Rate for such day plus (ii) the Applicable Margin, in each
case changing when and as the Alternate Base Rate changes.

Second Amended and Restated Credit Agreement - Page 3

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      Base Rate Loans means any loan during any period which bears interest
based upon the Base Rate or which would bear interest based upon the Base Rate
if the Maximum Rate ceiling was not in effect at that particular time.

      Borrower and Borrowers are used herein as defined in the preamble hereof.

      Borrowing Base means the value assigned by the Lenders from time to time
to the Oil and Gas Properties pursuant to Section 7.

      Borrowing Base Deficiency is used herein as defined in Section 9(b).

      Borrowing Base Usage means, as of any date and for all purposes, the
quotient, expressed as a percentage, of (i) the Total Outstandings, divided by
(ii) the Borrowing Base.

      Borrowing Date means the date elected by Borrower pursuant to Section 2(b)
for an Advance on the Loan or a date a Letter of Credit is issued, renewed,
extended or reissued hereunder.

      Business Day shall mean (i) with respect to any borrowing, payment or note
selection of LIBOR Loans, a day (other than Saturdays or Sundays) on which banks
are legally open for business in Chicago, Illinois and New York, New York and on
which dealings in United States dollars are carried on in the London interbank
market, and (ii) for all other purposes a day (other than Saturdays and Sundays)
on which banks are legally open for business in Chicago, Illinois.

      Capital Lease means any lease of property, real or personal, which would
be capitalized on a balance sheet of the lessee prepared in accordance with
GAAP.

      Capital Stock means any and all shares, interests, participations or other
equivalents (however designated) of capital stock of a corporation, any and all
equivalent ownership interests in a Person (other than a corporation),
including, without limitation, partnership interests and membership interests,
and any and all warrants, rights or options to purchase or other arrangements or
rights to acquire any of the foregoing.

      Capitalized Lease Obligation means, with respect to any Person for any
period, any obligation of such Person to pay rent or other amounts under a
Capital Lease; the amount of such obligation shall be the capitalized amount
thereof determined in accordance with GAAP.

      Cash Dividends means, collectively, Common Stock Cash Dividends and
Preferred Stock Cash Dividends.

      Change of Control means the occurrence of any of the following: (i) the
sale, lease, transfer, conveyance or other disposition (other than by way of
merger or consolidation), in one or a series of related transactions, of all or
substantially all of the assets of the Company and its Subsidiaries taken as a
whole to any "person" or group of related "persons" (as such terms are

Second Amended and Restated Credit Agreement - Page 4

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used in Section 13(d)(3) of the Exchange Act), (ii) the adoption of a plan
relating to the liquidation or dissolution of the Company, (iii) the
consummation of any transaction (including, without limitation, any purchase,
sale, acquisition, disposition, merger or consolidation) the result of which is
that any "person" (as defined above) or group of related "persons" becomes the
"beneficial owner" (as such term is defined in Rule 13d-3 and Rule 13d(5 under
the Exchange Act) of more than 40% of the aggregate voting power of all classes
of Capital Stock of the Company having the right to elect directors under
ordinary circumstances or (iv) the first day on which a majority of the members
of the Board of Directors of the Company are not Continuing Directors.

      Collateral is used herein as defined in Section 6.

      Commitment means (A) for all Lenders, the lesser of (i) $600,000,000 or
(ii) the Borrowing Base, as reduced or increased from time to time pursuant to
Sections 2 and 7, and (B) as to any Lender, its obligation to make Advances
hereunder in amounts not exceeding, in the aggregate, an amount equal to such
Lender's Commitment Percentage times the total Commitment as of any date. The
Commitment of each Lender hereunder shall be adjusted from time to time to
reflect assignments made by such Lender pursuant to Section 29. Each reduction
in the Commitment shall result in a Pro Rata reduction in each Lender's
Commitment.

      Commitment Percentage means for each Lender the percentage set forth
opposite the Lender's name on Annex A. The Commitment Percentage of each Lender
hereunder shall be adjusted from time to time to reflect assignments made by
such Lender pursuant to Section 29.

      Commodity Hedge Transactions means Rate Management Transactions that are
commodity swaps, options, caps, collars or floors entered into for the purpose
of hedging against fluctuations in commodity prices.

      Common Stock Cash Dividends means cash dividends paid on any common
shares, interests, participations or other equivalents (however designated) of
Capital Stock of the Company.

      Company is used herein as defined in the preamble hereof.

      Contingent Obligation of a Person means any agreement, undertaking or
arrangement by which such Person assumes, guarantees, endorses, contingently
agrees to purchase or provide funds for the payment of, or otherwise becomes or
is contingently liable upon, the obligation or liability of any other Person, or
agrees to maintain the net worth or working capital or other financial condition
of any other Person, or otherwise assures any creditor of such other Person
against loss, including, without limitation, any comfort letter, operating
agreement, take-or-pay contract or the obligations of any such Person as general
partner of a partnership with respect to the liabilities of the partnership.

Second Amended and Restated Credit Agreement - Page 5

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      Continuing Directors means, as of any date of determination, any member of
the Board of Directors of the Company who (i) was a member of such Board of
Directors on the date of original issuance of the Notes or (ii) was nominated
for election or elected to such Board of Directors with the approval of a
majority of the Continuing Directors who were members of such Board at the time
of such nomination.

      Convertible Preferred Stock means the 5.90% Cumulative Convertible
Preferred Stock of the Company.

      Convertible Subordinated Debentures means those certain 6% Convertible
Subordinated Debentures due 2007, issued pursuant to an Indenture by and between
the Company and Key Corp. Shareholder Services, Inc., as Trustee.

      Current Assets means the total of the Company's current assets determined
in accordance with GAAP, including as of any date, the Available Commitment and
excluding any accounting entries made as a result of the application of FASB
133.

      Current Liabilities means the total of current obligations as determined
in accordance with GAAP, excluding therefrom, as of any date, (i) current
maturities due on the Loans and the Junior Securities, and (ii) any accounting
entries as a result of the application of FASB 133.

      Current Ratio means, as of any date of determination, the ratio of Current
Assets on such date to Current Liabilities on such date.

      Debt of a Person means such Person's (i) obligations for borrowed money,
(ii) obligations representing the deferred purchase price of property or
services (other than accounts payable arising in the ordinary course of such
Person's business payable on terms customary in the trade and which are not
outstanding more than ninety (90) days past the invoice date or if outstanding
beyond such date, such account payable is being contested in good faith and such
Person has established appropriate reserves, if any, as required in conformity
with GAAP), (iii) obligations, whether or not assumed, secured by Liens or
payable out of the proceeds or production from property now or hereafter owned
or acquired by such Person, (iv) obligations which are evidenced by notes,
acceptances, or other instruments, (v) obligations of such Person to purchase
securities or other property arising out of or in connection with the sale of
the same or substantially similar securities or property, (vi) Contingent
Obligations, (vii) Capitalized Lease Obligations, (viii) obligations under
letters of credit, (ix) Rate Management Obligations and (x) any other obligation
for borrowed money or other similar financial accommodation which in accordance
with GAAP would be shown as a liability on the consolidated balance sheet of
such Person.

      Deep Participation Rights means the right of Marbel and its successors or
permitted assigns to participate in the drilling or deepening of certain wells
located in a specified area of Ohio pursuant to Section 6.09 of the GLEP
Acquisition Agreement as in effect on the date hereof.

Second Amended and Restated Credit Agreement - Page 6

<PAGE>

      Default means all the events specified in Section 14, regardless of
whether there shall have occurred any passage of time or giving of notice, or
both, that would be necessary in order to constitute such event as an Event of
Default.

      Default Rate means with respect to any Advance of any Type, a fluctuating
rate of interest per annum that is two percent (2.0%) in excess of the rates
otherwise payable under this Agreement.

      Defaulting Lender is used herein as defined in Section 3(f).

      Determination Date is used herein as defined in Section 7(b).

      Disqualified Stock means any Capital Stock which, by its terms (or by the
terms of any security into which it is convertible or for which it is
exchangeable), or upon the happening of any event, (i) matures or is mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or is redeemable
at the sole option of the holder thereof, in whole or in part, on or prior to
the Maturity Date, or (ii) requires the payment of any dividend other than
dividends which are paid in kind.

      Dollar or $ means United States dollars.

      Domestic Subsidiary means, with respect to any Person, a Subsidiary of
such Person that is incorporated or formed under the laws of one of the states
of the United States of America or the District of Columbia.

      EBITDA shall mean Net Income (excluding gains and losses from asset sales,
and extraordinary and non-recurring gains and losses) plus the sum of (i) income
tax expense (but excluding income tax expense relating to the sales or other
disposition of assets, including capital stock, the gains and losses from which
are excluded in the determination of Net Income), plus (ii) Interest Expense,
plus (iii) depreciation, depletion and amortization expense, plus (iv) any other
non-cash expenses, plus (v) all non-cash losses resulting from the application
of FASB 121, 133 or 143 minus (vi) any non-cash gains resulting from the
application of FASB 133 or 143, all as determined in accordance with GAAP and
calculated as of the end of each fiscal quarter on a trailing four-quarter
basis.

      Effective Date means the date of this Agreement.

      Eligible Assignee means any of (i) a Lender or any Affiliate of a Lender;
(ii) a commercial bank organized under the laws of the United States, or any
state thereof, and having a combined capital and surplus of at least
$100,000,000; (iii) a commercial bank organized under the laws of any other
country which is a member of the Organization for Economic Cooperation and
Development, or a political subdivision of any such country, and having a
combined capital and surplus of at least $100,000,000.00, provided that such
bank is acting through a branch or agency located in the United States; (iv) a
Person that is primarily engaged in the business of

Second Amended and Restated Credit Agreement - Page 7

<PAGE>

commercial lending and that (A) is a subsidiary of a Lender, (B) a subsidiary of
a Person of which a Lender is a subsidiary, or (C) a Person of which a Lender is
a subsidiary; (v) any other entity (other than a natural person) which is an
"accredited investor" (as defined in Regulation D under the Securities Act)
which extends credit or buys loans as one of its businesses, including, but not
limited to, insurance companies, mutual funds, investments funds and lease
financing companies; and (vi) with respect to any Lender that is a fund that
invests in loans, any other fund that invests in loans and is managed by the
same investment advisor of such Lender or by an Affiliate of such investment
advisor (and treating all such funds so managed as a single Eligible Assignee);
provided, however, that no Affiliate of Borrower shall be an Eligible Assignee.

      Engineered Value is used herein as defined in Section 6.

      Environmental Laws means the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended by the Superfund Amendments
and Reauthorization Act of 1986, 42 U.S.C.A. Section 9601, et seq., the Resource
Conservation and Recovery Act, as amended by the Hazardous Solid Waste Amendment
of 1984, 42 U.S.C.A. Section 6901, et seq., the Clean Water Act, 33 U.S.C.A.
Section 1251, et seq., the Clean Air Act, 42 U.S.C.A. Section 1251, et seq., the
Toxic Substances Control Act, 15 U.S.C.A. Section 2601, et seq., The Oil
Pollution Act of 1990, 33 U.S.G. Section 2701, et seq., and all other laws,
statutes, codes, acts, ordinances, orders, judgments, decrees, injunctions,
rules, regulations, orders, permits and restrictions of any federal, state,
county, municipal and other governments, departments, commissions, boards,
agencies, courts, authorities, officials and officers, domestic or foreign,
relating to in any way the environment, preservation or reclamation of natural
resources, oil pollution, air pollution, water pollution, noise control and/or
the management, release or threatened release, handling, discharge, disposal or
recovery of on-site or off-site asbestos, radioactive materials, spilled or
leaked petroleum products, distillates or fractions and industrial solid waste
or "hazardous substances" as defined by 42 U.S.C. Section 9601, et seq., as
amended, as each of the foregoing may be amended from time to time.

      Environmental Liability means any claim, demand, obligation, cause of
action, order, violation, damage, injury, judgment, penalty or fine, cost of
enforcement, cost of remedial action or any other costs or expense whatsoever,
contingent or otherwise, including reasonable attorneys' fees and disbursements
and any liability for cleanups, costs of environmental remediation, fines or
penalties, resulting from the violation or alleged violation of any
Environmental Law or the release of any substance into the environment which is
required to be remediated by a regulatory agency or governmental authority or
the imposition of any Environmental Lien (as hereinafter defined), which could
reasonably be expected to individually or in the aggregate have a Material
Adverse Effect.

      Environmental Lien means a Lien in favor of any court, governmental agency
or instrumentality or any other Person (i) for any Environmental Liability or
(ii) for damages arising from or cost incurred by such court or governmental
agency or instrumentality or other Person in response to a release or threatened
release of asbestos or "hazardous substance" into the

Second Amended and Restated Credit Agreement - Page 8

<PAGE>

environment, the imposition of which Lien could reasonably be expected to have a
Material Adverse Effect.

      ERISA means the Employee Retirement Income Security Act of 1974, as
amended.

      Event of Default is used herein as defined in Section 14.

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

      Federal Funds Effective Rate shall mean, for any day, an interest rate per
annum equal to the weighted average of the rates on overnight Federal funds
transactions with members of the Federal Reserve System arranged by Federal
funds brokers on such day, as published for such day (or, if such day is not a
Business Day, for the immediately preceding Business Day) by the Federal Reserve
Bank of New York, or, if such rate is not so published for any day which is a
Business Day, the average of the quotations at approximately 10:00 a.m. (Dallas,
Texas time) on such day on such transactions received by the Agent from three
(3) Federal funds brokers of recognized standing selected by the Agent in its
sole discretion.

         Financial Statements means, with respect to any Person, collectively,
the consolidated balance sheets, income statements, statements of cash flow,
stockholder equity and appropriate footnotes and schedules prepared in
accordance with GAAP.

      FirstEnergy is used herein as defined in the recitals hereof.

      Funded Debt means, as of any date, without duplication, (i) all
obligations for borrowed money or for the purchase price of property, (ii) all
obligations evidenced by bonds, debentures, notes, or other similar instruments,
(iii) all other indebtedness (including obligations under capital leases, other
than usual and customary oil and gas leases) on which interest charges are
customarily paid or accrued, (iv) all guarantees, (v) the unfunded or
unreimbursed portion of all letters of credit, (vi) any indebtedness or other
obligation secured by a Lien on assets, whether or not assumed, and (vii) all
liability as a general partner of a partnership for obligations of that
partnership of the nature described in (i) through (vii) preceding.

      GAAP means United States generally accepted accounting principles,
consistently applied.

      GLEP is used herein as defined in the preamble hereof.

      GLEP Acquisition is used herein as defined in the recitals hereof.

      GLEP Acquisition Agreement is used herein as defined in the recitals
hereof.

      Guarantor means GulfStar Energy, Inc., Range Energy I, Inc., Range HoldCo,
Inc., Range Production Company, Range Energy Ventures Corporation, Range Energy
Finance

Second Amended and Restated Credit Agreement - Page 9

<PAGE>

Corporation, Range Production I, L.P. Range Resources, L.L.C. Ohio Intrastate
Gas Transmission Company, Victory Energy Partners, L.L.C. and Range Pipelines
Systems, L.P. and, if required pursuant to Section 6, each Domestic Subsidiary
of the Company (other than GLEP) that hereafter executes and delivers to the
Agent and the Lenders, a Guaranty.

      Guaranty means a Guaranty, substantially in the form of Exhibit "C" to be
executed by each Material Domestic Subsidiary of the Company (other than GLEP)
in favor of the Agent and the Lenders, pursuant to which such Subsidiary
guaranties payment and performance in full of the Obligations, as amended or
modified and in effect from time to time.

      Indemnified Party is used herein as defined in Section 19.

      Indenture means that certain Indenture dated as of July 21, 2003, by and
between the Company, as issuer, certain of its Subsidiaries, as guarantors, and
Bank One, as trustee, pursuant to which the Company issued the Senior
Subordinated Notes, as amended and supplemented by that certain Supplemental
Indenture dated as of June 22, 2004 and as further amended and supplemented from
time to time as permitted under the terms thereof.

      Interest Expense means the aggregate amount of interest expense of the
Company, on a consolidated basis, as determined in accordance with GAAP.

      Interest Payment Date means the last day of each calendar month in the
case of Base Rate Loans and, in the case of LIBOR Loans, the last day of the
applicable Interest Period, and if such Interest Period is longer than three (3)
months, at three (3) month intervals following the first day of such Interest
Periods.

      Interest Period means with respect to any LIBOR Loan (i) initially, the
period commencing on the date such LIBOR Loan is made and ending one (1), two
(2), three (3), six (6), nine (9) or twelve (12) months (if, at the date of any
such election, a nine (9) or twelve (12) month placement is available to the
Agent) thereafter as selected by Borrowers pursuant to Section 4(a)(ii), and
(ii) thereafter, each period commencing on the day following the last day of the
next preceding Interest Period applicable to such LIBOR Loan and ending one (1),
two (2), three (3), six (6), nine (9) or twelve (12) months (if, at the date of
any such election, a nine (9) or twelve (12) month placement is available to the
Agent) thereafter, as selected by Borrowers pursuant to Section 4(a)(ii);
provided, however, that (i) if any Interest Period would otherwise expire on a
day which is not a Business Day, such Interest Period shall expire on the next
succeeding Business Day unless the result of such extension would be to extend
such Interest Period into the next calendar month, in which case such Interest
Period shall end on the immediately preceding Business Day, (ii) if any Interest
Period 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) such Interest Period shall end on the last Business Day
of a calendar month, and (iii) any Interest Period which would otherwise expire
after the Maturity Date shall end on such Maturity Date.

Second Amended and Restated Credit Agreement - Page 10

<PAGE>

      June 2004 New Lenders is used herein as defined in the recitals hereof.

      Junior Securities means, collectively, the Senior Subordinated Notes, the
Convertible Subordinated Debentures, and the Convertible Preferred Stock.

      Lender or Lenders are used herein as defined in the preamble hereof.

      Lender Counterparty means (i) each Lender or any Affiliate of a Lender
counterparty to a Rate Management Transaction and (ii) with respect to the Rate
Management Transactions in which JPMorgan Chase Bank or any of its Affiliates is
a counterparty on the Effective Date, the counterparty to each such Rate
Management Transaction so long as such counterparty is JPMorgan Chase Bank or a
Lender or an Affiliate of JPMorgan Chase Bank or a Lender.

      Lending Installation means, with respect to a Lender or the Agent, the
office, branch, Subsidiary or Affiliate of such Lender or the Agent listed on
Annex A or otherwise selected by such Lender or the Agent pursuant to Section
5(c).

      Letters of Credit is used herein as defined in Section 2(c).

      LIBOR Base Rate means, with respect to a LIBOR Loan for the relevant
Interest Period, the applicable British Bankers' Association LIBOR rate for
deposits in U.S. dollars as reported by any generally recognized financial
information service as of 11:00 a.m. (London time) two Business Days prior to
the first day of such Interest Period, and having a maturity equal to such
Interest Period, provided that, if no such British Bankers' Association LIBOR
rate is available to the Agent, the applicable LIBOR Base Rate for the relevant
Interest Period shall instead be the rate determined by the Agent to be the rate
at which Bank One or one of its Affiliate banks offers to place deposits in U.S.
dollars with first-class banks in the interbank market at approximately 11:00
a.m. (London time) two Business Days prior to the first day of such Interest
Period, in the approximate amount of Bank One's relevant LIBOR Loan and having a
maturity equal to such Interest Period.

      LIBOR Loans means any Loans during any period which bear interest at the
LIBOR Rate, or which would bear interest at such rate if the Maximum Rate
ceiling was not in effect at a particular time.

      LIBOR Rate means, with respect to a LIBOR Loan for the relevant Interest
Period, the sum of (i) the quotient of (A) the LIBOR Base Rate applicable to
such Interest Period, divided by (B) one minus the Reserve Requirement
(expressed as a decimal) applicable to such Interest Period, plus the (ii)
Applicable Margin. The LIBOR Rate shall be rounded to the next higher multiple
of 1/100th of one percent if the rate is not such a multiple.

      Lien means any mortgage, deed of trust, pledge, security interest,
assignment, encumbrance or lien (statutory or otherwise) of every kind and
character.

Second Amended and Restated Credit Agreement - Page 11

<PAGE>

      Loan Documents means this Agreement, the Notes, the Guaranties, the
Security Instruments and all other documents executed by the Company or any of
its Subsidiaries with Agent or the Lenders in connection with the transaction
described in this Agreement.

      Loans means the Revolving Loans.

      Marbel is used herein as defined in the recitals hereof.

      Material Adverse Effect means a material adverse effect on (i) the assets
or properties, liabilities, financial condition, business, operations, affairs
or circumstances of the Company and its Subsidiaries, taken as a whole, (ii) the
ability of Borrowers to carry out their respective businesses as of the date of
this Agreement or as proposed at the date of this Agreement to be conducted,
(iii) the ability of Borrowers to perform fully and on a timely basis their
respective obligations under any of the Loan Documents, (iv) the validity or
enforceability of any of the Loan Documents or the rights and remedies of the
Agent or the Lenders thereunder or (v) the Collateral, the Liens on the
Collateral created pursuant to the Loan Documents or the priority of any such
Lien.

      Material Domestic Subsidiary means any Domestic Subsidiary of the Company
(other than GLEP) that (i) owns or holds assets, properties or interests
(including oil, gas and mineral properties and interests) with an aggregate fair
market value greater than five percent (5%) of the aggregate fair market value
of all of the assets, properties and interests (including oil, gas and mineral
properties and interests) of the Company and its Subsidiaries taken as a whole
or (ii) is now or hereafter becomes a "Restricted Subsidiary" as such term is
defined in the Indenture.

      Maturity Date shall mean January 1, 2008.

      Maximum Rate is used herein as defined in Section 23.

      Mortgages means all mortgages, deeds of trust, amendments to mortgages,
security agreements, assignments of production, pledge agreements, collateral
mortgages, collateral chattel mortgages, collateral assignments, financing
statements and other documents, instruments and agreements evidencing, creating,
perfecting or otherwise establishing the Liens required by Section 6. All
Mortgages shall be in form and substance satisfactory to the Agent in its sole
discretion.

      Net Income means, for the Company for any period, the consolidated net
income (or loss) of the Company for such period calculated in accordance with
GAAP. For the avoidance of doubt, so long as GLEP is a wholly-owned Subsidiary
of the Company, Net Income for any period shall include one hundred percent
(100%) of the net income (or loss) of GLEP even if such period includes periods
prior to the closing of the GLEP Acquisition.

      Non-Consenting Lender is used herein as defined in Section 5(g).

Second Amended and Restated Credit Agreement - Page 12

<PAGE>

      Notes means the Notes, substantially in the form of Exhibit "B" hereto
issued or to be issued hereunder to each Lender, respectively, to evidence the
indebtedness to such Lender arising by reason of the Advances on the Commitment,
together with all modifications, renewals and extensions thereof or any part
thereof.

      Notice of Borrowing is used herein as defined Section 2(b).

      Obligations means all obligations of every nature of each Borrower from
time to time owed to the Agent (including in its capacity as the issuer of any
Letter of Credit, and any former Agents) and, the Lenders or any of them and the
Lender Counterparties, under any Loan Document or Rate Management Transaction,
whether for principal, interest (including interest which, but for the filing of
a petition in bankruptcy with respect to such Borrower, would have accrued on
any Obligation, whether or not a claim is allowed against such Borrower for such
interest in the related bankruptcy proceeding), all Reimbursement Obligations,
payments for early termination of Rate Management Transactions, fees, expenses,
indemnification or otherwise.

      Off-Balance Sheet Liability of a Person means (i) any repurchase
obligation or liability of such Person with respect to accounts or notes
receivable sold by such Person, (ii) any liability under any Sale and Leaseback
Transaction which is not a Capitalized Lease, (iii) any liability under any
so-called "synthetic lease" transaction entered into by such Person, (iv) any
Advance Payment Contract, or (vi) 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 sheets of
such Person, but excluding from the foregoing clauses (iii) through (vi)
Operating Leases and usual and customary oil, gas and mineral leases.

      Oil and Gas Properties means all oil, gas and mineral properties and
interests and related personal properties, in which any Borrower or any
Guarantor owns an interest.

      Optional Hedging Payment has the meaning assigned to such term in the GLEP
Acquisition Agreement.

      Organizational Documents means (i) with respect to any corporation, its
certificate or articles of incorporation or organization, as amended, and its
by-laws, as amended, (ii) with respect to any limited partnership, its
certificate of limited partnership, as amended, and its partnership agreement,
as amended, (iii) with respect to any general partnership, its partnership
agreement, as amended, and (iv) with respect to any limited liability company,
its articles of organization, as amended, and its operating agreement, as
amended.

      Original Credit Agreements is used herein as defined in the recitals
hereto.

      Original GLEP Credit Agreement is used herein as defined in the recitals
hereto.

Second Amended and Restated Credit Agreement - Page 13

<PAGE>

      Original Range Credit Agreement is used herein as defined in the recitals
hereto.

      Other Financing is used herein as defined in Section 15(1).

      Payor is used herein as defined in Section 3(h).

      Permitted Liens means (i) royalties, overriding royalties, reversionary
interests, production payments and similar burdens; (ii) sales contracts or
other arrangements for the sale of production of oil, gas or associated liquid
or gaseous hydrocarbons which would not (when considered cumulatively with the
matters discussed in clause (i) above) deprive any Borrower or any Guarantor of
any material right in respect of such Borrower's or such Guarantor's assets or
properties (except for rights customarily granted with respect to such contracts
and arrangements); (iii) statutory Liens for taxes or other assessments that are
not yet delinquent (or that, if delinquent, are being contested in good faith by
appropriate proceedings, levy and execution thereon having been stayed and
continue to be stayed and for which such Borrower or such Guarantor has set
aside on its books adequate reserves in accordance with GAAP); (iv) easements,
rights of way, servitudes, permits, surface leases and other rights in respect
to surface operations, pipelines, grazing, logging, canals, ditches, reservoirs
or the like, conditions, covenants and other restrictions, and easements of
streets, alleys, highways, pipelines, telephone lines, power lines, railways and
other easements and rights of way on, over or in respect of any Borrower's or
any Guarantor's assets or properties and that do not individually or in the
aggregate cause a Material Adverse Effect; (v) materialmen's, mechanic's,
repairman's, employee's, vendor's laborer's warehousemen's, landlord's,
carrier's, pipeline's, contractor's, sub-contractor's, operator's,
non-operator's (arising under operating or joint operating agreements), and
other Liens (including any financing statements filed in respect thereof)
incidental to obligations incurred by any Borrower or any Guarantor in
connection with the construction, maintenance, development, transportation,
processing, storage or operation of any Borrower's or any Guarantor's assets or
properties to the extent not delinquent (or which, if delinquent, are being
contested in good faith by appropriate proceedings and for which such Borrower
or such Guarantor has set aside on its books adequate reserves in accordance
with GAAP); (vi) all contracts, agreements and instruments, and all defects and
irregularities and other matters affecting any Borrower's or any Guarantor's
assets and properties which were in existence at the time such Borrower's or
such Guarantor's assets and properties were originally acquired by such Borrower
or such Guarantor and all routine operational agreements entered into in the
ordinary course of business, which contracts, agreements, instruments, defects,
irregularities and other matters and routine operational agreements are not such
as to, individually or in the aggregate, interfere materially with the
operation, value or use of any Borrower's or any Guarantor's assets and
properties, considered in the aggregate; (vii) liens in connection with
workmen's compensation, unemployment insurance or other social security, old age
pension or public liability obligations; (viii) legal or equitable encumbrances
deemed to exist by reason of the existence of any litigation or other legal
proceeding or arising out of a judgment or award with respect to which an appeal
is being prosecuted in good faith and levy and execution thereon have been
stayed and continue to be stayed; (ix) rights reserved to or vested in

Second Amended and Restated Credit Agreement - Page 14

<PAGE>

any municipality, governmental, statutory or other public authority to control
or regulate any Borrower's or any Guarantor's assets and properties in any
manner, and all applicable laws, rules and orders from any governmental
authority; (x) landlord's liens; (xi) Liens incurred pursuant to the Security
Instruments and Liens (other than Liens on Collateral) that secure obligations
under Rate Management Transactions permitted pursuant to Section 13(n); and
(xii) Liens existing at the date of this Agreement which are identified in
Schedule "1".

      Person means an individual, a corporation, a partnership, an association,
a trust or any other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

      Plan means any plan subject to Title IV of ERISA and maintained by
Borrower, or any such plan to which Borrower is required to contribute on behalf
of its employees.

      Pre-Approved Contracts means any contracts or agreements entered into by
any Borrower in connection with any Rate Management Transaction which are (i)
designed to hedge, provide a price floor for, or swap crude oil or natural gas
or otherwise sell up to (A) 90% of the anticipated production from proved,
developed producing reserves of crude oil of Borrowers and Guarantors, taken as
a whole, and/or (B) 90% of anticipated production from proved, developed
producing reserves of natural gas of Borrowers and Guarantors, taken as a whole,
during the period from the immediately preceding settlement date (or the
commencement of the term of such hedge transactions if there is no prior
settlement date) to such settlement date, (ii) interest rate hedges in an
aggregate notional amount of not more than eighty percent (80%) of the total
Funded Debt of Borrowers projected to be outstanding for any period covered by
such hedges, and (iii) with a maturity of thirty-six (36) months or less.
Provided; however, that Borrowers may hedge, provide a floor price for, or swap
either crude oil or natural gas for periods up to sixty (60) months if all such
hedges covering any portion of the period from the end of the thirty-sixth
(36th) month to the end of the sixtieth (60th) month do not cover more than
fifty percent (50%) of Borrowers' anticipated production from proved developed
producing reserves of crude oil or natural gas, as the case may be.

      Preferred Stock Cash Dividends means cash dividends paid on any preferred
shares, interests, participations or other equivalents (however designated) of
capital stock of Borrower.

      Prime Rate means the rate per annum equal to the Prime Rate announced from
time to time by Bank One or its parent and their respective successors (which is
not necessarily the lowest rate charged to any customer), changing when and as
said Prime Rate changes.

      Pro Rata or Pro Rata Part means for each Lender, (i) for all purposes
where no Loan is outstanding, such Lender's Commitment Percentage and (ii)
otherwise, the proportion which the portion of the outstanding Loans owed to
such Lender bears to the aggregate outstanding Loans owed to all Lenders at the
time in question.

      Range Production I means Range Production I, L.P., a Texas limited
partnership.

Second Amended and Restated Credit Agreement - Page 15

<PAGE>

      Rate Management Obligations of a Person means any and all obligations of
such Person, whether absolute or contingent and howsoever and whensoever
created, arising, evidenced or acquired (including all renewals, extensions and
modifications thereof and substitutions therefor), under (i) any and all Rate
Management Transactions, and (ii) any and all cancellations, buy backs,
reversals, terminations or assignments of any Rate Management Transactions.

      Rate Management Transaction means any transaction (including an agreement
with respect thereto) now existing or hereafter entered into by any Borrower or
any of their Subsidiaries which is a rate swap, basis swap, forward rate
transaction, commodity swap, commodity option, equity or equity index swap,
equity or equity index option, bond option, interest rate option, forward
exchange transaction, cap transaction, floor transaction, collar 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.

      REFC means Range Energy Finance Corporation.

      Regulation D means Regulation D of the Board of Governors of the Federal
Reserve System as from time to time in effect and any successor thereto and
other regulation or official interpretation of said Board of Governors relating
to reserve requirements applicable to member banks of the Federal Reserve
System.

      Reimbursement Obligations means, at any time, the obligations of Borrowers
in respect of all Letters of Credit then outstanding to reimburse amounts paid
by any Lender in respect of any drawing or drawings under a Letter of Credit.

      Related Transactions means the consummation of the GLEP Acquisition, the
release of any obligation of GLEP with respect to at least one-half of the Rate
Management Transactions of GLEP in effect immediately prior to the consummation
of the GLEP Acquisition if the Company makes the Optional Hedging Payment, the
issuance of additional common stock of the Company, if any, the issuance of
additional Senior Subordinated Notes, if any, the execution and delivery of the
Loan Documents, the funding of the Loans on the Effective Date and the payment
of all fees, costs and expenses associated with all of the foregoing.

      Release Price is used herein as defined in Section 12(r).

      Required Lenders means Lenders holding 66-2/3% or more of the Commitments
or if one or more of the Commitments have been terminated, Lenders holding
66-2/3% of the outstanding Loans.

      Required Payment is used herein as defined in Section 3(h).

Second Amended and Restated Credit Agreement - Page 16

<PAGE>

      Reserve Requirement means, with respect to any Interest Period, the
maximum aggregate reserve requirement (including all basic, supplemental,
marginal and other reserves) which is imposed under Regulation D on Eurocurrency
liabilities.

      Revolving Loan or Loans means an Advance or Advances made pursuant to
Section 2(a).

      Sale and Leaseback Transaction means any sale or other transfer of real or
personal property by any Person with the intent to lease such property as
lessee.

      Security Instruments is used collectively herein to mean this Agreement,
Mortgages, Security Agreements, Assignments of Production and Financing
Statements and other collateral documents covering certain of the Oil and Gas
Properties and related personal property, equipment, oil and gas inventory and
proceeds of the foregoing, the Guaranties, all pledge agreements and all
collateral assignments of notes and liens, all such documents to be in form and
substance reasonably satisfactory to Agent.

      Senior Subordinated Notes means the 7 3/8% Senior Subordinated Notes due
2013, issued pursuant to the Indenture.

      Subsidiary of a Person means (i) any corporation more than 50% of the
outstanding securities having ordinary voting power of which shall at the time
be owned or controlled, directly or indirectly, by such Person or by one or more
of its Subsidiaries or by such Person and one or more of its Subsidiaries, or
(ii) any partnership, limited liability company, association, joint venture or
similar business organization more than 50% of the ownership interests having
ordinary voting power of which shall at the time be so owned or controlled.
Unless otherwise expressly provided, all references herein to a "Subsidiary"
shall mean a Subsidiary of the Company.

      Super Majority Lenders means Lenders holding 75% or more of the
Commitments or if one or more of the Commitments have been terminated, Lenders
holding 75% of the outstanding Loans.

      Terminated Lender is used herein as defined in Section 5(g).

      Total Outstandings means, as of any date, the sum of (i) the total
principal balance outstanding on the Notes at any time plus (ii) the total face
amount of all outstanding Letters of Credit, plus (iii) the total amount of all
unpaid Reimbursement Obligations.

      Tranche means a set of LIBOR Loans made by the Lenders at the same time
and for the same Interest Period.

      Type means, with respect to any Advance, its nature as a Base Rate Advance
or a LIBOR Advance and with respect to any Loan, its nature as a Base Rate Loan
or a LIBOR Loan.

Second Amended and Restated Credit Agreement - Page 17

<PAGE>

      Unscheduled Redeterminations means a redetermination of the Borrowing Base
made at any time other than on the dates set for the regular semi-annual
redetermination of the Borrowing Base which are made (A) at the request of
Borrower (but only once between Borrowing Base redeterminations), or (B) at the
request of Required Lenders (but only twice between Borrowing Base
redeterminations), provided, however, that (i) Required Lenders may require an
Unscheduled Redetermination at any time it appears to Agent or Required Lenders,
in the exercise of their reasonable discretion, that either (a) there has been a
material decrease in the value of the Oil and Gas Properties, or (b) an event
has occurred which is reasonably expected to have a Material Adverse Effect, or
(ii) Required Lenders may require an Unscheduled Redetermination if any Borrower
terminates any material agreements entered into in connection with a Rate
Management Transaction used by Lenders in determining the Borrowing Base or if
the counterparty to any such material agreement commences, or has commenced
against it any proceeding under any bankruptcy, insolvency or similar law now or
hereafter in effect.

      Unused Commitment Fee is used herein as defined in Section 8(a).

      2. COMMITMENTS OF THE LENDERS.

            (a) Terms of Commitment. On the terms and conditions hereinafter set
      forth, each Lender agrees severally to make Advances to Borrowers from
      time to time during the period beginning on the Effective Date and ending
      on the Maturity Date in such amounts as the Company may request up to an
      amount not to exceed, in the aggregate principal amount advanced at any
      time, its Pro Rata Part of the Available Commitment. Subject to the terms
      of this Agreement, Borrowers may borrow, repay and reborrow at any time
      prior to the Maturity Date. The obligation of Borrowers hereunder shall be
      evidenced by this Agreement and the Notes issued in connection herewith,
      said Notes to be as described in Section 3. The obligations of the
      Borrowers under this Agreement, the Notes and the other Loan Documents
      shall be joint and several. Notwithstanding any other provision of this
      Agreement, no Advance shall be required to be made hereunder if any
      Default or Event of Default (as hereinafter defined) has occurred and is
      continuing. Each Advance under the Commitment shall be an aggregate amount
      of at least $1,000,000 or any whole multiples of $100,000 in excess
      thereof. Irrespective of the face amount of the Note or Notes, the Lenders
      shall never have the obligation to Advance any amount or amounts in excess
      of the Commitment.

            (b) Procedure for Borrowing. Whenever Borrowers desire an Advance
      under the Commitment, the Company shall give Agent telegraphic, telex,
      facsimile or telephonic notice ("Notice of Borrowing") of such requested
      Advance, which in the case of telephonic notice, shall be promptly
      confirmed in writing. Each Notice of Borrowing shall be in the form of
      Exhibit "A" attached hereto and shall be received by Agent not later than
      11:00 a.m. Chicago, Illinois time, (i) on the Borrowing Date in the case
      of the Base Rate Loan, or (ii) three Business Days prior to any proposed
      Borrowing Date in the case of LIBOR Loans. Each Notice of Borrowing shall
      specify (i) the Borrowing Date (which shall be a Business Day), (ii) the
      principal amount to be borrowed, (iii) the

Second Amended and Restated Credit Agreement - Page 18

<PAGE>

      portion of the Advance constituting Base Rate Loans and/or LIBOR Loans and
      (iv) if any portion of the proposed Advance is to constitute LIBOR Loans,
      the initial Interest Period selected by Borrowers pursuant to Section 4 to
      be applicable thereto. Upon receipt of such Notice, Agent shall advise
      each Lender thereof; provided, that if the Lenders have received notice of
      such Advance prior to 12:00 p.m. (noon), Chicago, Illinois time, on the
      Borrowing Date in the case of a Base Rate Loan, or at least three (3)
      days' notice of each Advance prior to the Borrowing Date in the case of a
      LIBOR Loan, each Lender shall provide Agent at its office at Bank One, NA,
      Mail Code IL1-0634, 1 Bank One Plaza, Chicago, Illinois, 60670-0634,
      Facsimile Number (312) 732-4840, with a copy to 1717 Main Street,
      TX1-2448, Dallas, Texas 75201, Facsimile No. (214) 290-2332 Attention: Wm.
      Mark Cranmer, Director, Capital Markets, not later than 2:00 p.m.,
      Chicago, Illinois time, on the Borrowing Date, in immediately available
      funds, its pro rata share of the requested Advance, but the aggregate of
      all such fundings by each Lender shall never exceed such Lender's
      Commitment. Not later than 3:00 p.m., Chicago, Illinois time, on the
      Borrowing Date, Agent shall make available to Borrowers at the same
      office, in like funds, the aggregate amount of such requested Advance.
      Neither Agent nor any Lender shall incur any liability to Borrowers in
      acting upon any Notice of Borrowing referred to above which Agent or such
      Lender believes in good faith to have been given by a duly authorized
      officer or other Person authorized to borrow on behalf of Borrowers or for
      otherwise acting in good faith under this Section 2(b). Upon funding of
      Advances by Lenders and such funds being made available to Borrowers in
      accordance with this Agreement, pursuant to any such Notice, Borrowers
      shall have effected Advances hereunder.

            (c) Letters of Credit. On the terms and conditions hereinafter set
      forth, the Agent shall from time to time during the period beginning on
      the Effective Date and ending on the Maturity Date upon request of the
      Company issue standby and/or commercial Letters of Credit for the account
      of Borrowers (the "Letters of Credit") in such face amounts as the Company
      may request, but not to exceed in the aggregate face amount at any time
      outstanding the sum of Twenty Million Dollars ($20,000,000.00). The face
      amount of all Letters of Credit issued and outstanding hereunder shall be
      considered as Advances on the Commitment for Borrowing Base purposes and
      all payments made by the Agent on such Letters of Credit shall be
      considered as Advances under the Notes. Each Letter of Credit issued for
      the account of any Borrower hereunder shall (i) be in favor of such
      beneficiaries as specifically requested by the Company, (ii) have an
      expiration date not exceeding the earlier of (a) one year or (b) the
      Maturity Date, and (iii) contain such other terms and provisions as may be
      required by issuing Lender. Each Lender (other than Agent) agrees that,
      upon issuance of any Letter of Credit hereunder, it shall automatically
      acquire a participation in the Agent's liability under such Letter of
      Credit in an amount equal to such Lender's Commitment Percentage of such
      liability, and each Lender (other than Agent) thereby shall absolutely,
      unconditionally and irrevocably assume, as primary obligor and not as
      surety, and shall be unconditionally obligated to Agent to pay and
      discharge when due, its Commitment

Second Amended and Restated Credit Agreement - Page 19

<PAGE>

      Percentage of Agent's liability under such Letter of Credit. Borrowers
      hereby unconditionally agree to pay and reimburse the Agent for the amount
      of each demand for payment under any Letter of Credit that is in
      substantial compliance with the provisions of any such Letter of Credit at
      or prior to the date on which payment is to be made by the Agent to the
      beneficiary thereunder, without presentment, demand, protest or other
      formalities of any kind. Upon receipt from any beneficiary of any Letter
      of Credit of any demand for payment under such Letter of Credit, the Agent
      shall promptly notify Borrowers of the demand and the date upon which such
      payment is to be made by the Agent to such beneficiary in respect of such
      demand. Forthwith upon receipt of such notice from the Agent, Borrowers
      shall advise the Agent whether or not it intends to borrow hereunder to
      finance its obligations to reimburse the Agent, and if so, submit a Notice
      of Borrowing as provided in Section 2(b). If Borrowers fail to so advise
      Agent and thereafter fails to reimburse Agent, the Agent shall notify each
      Lender of the demand and the failure of Borrowers to reimburse the Agent,
      and each Lender shall reimburse the Agent for its Commitment Percentage of
      each such draw paid by the Agent and unreimbursed by Borrowers. All such
      amounts paid by Agent and/or reimbursed by the Lenders shall be treated as
      an Advance or Advances under the Commitment, which Advances shall be
      immediately due and payable and shall bear interest at the Default Rate.

            (d) Procedure for Obtaining Letters of Credit. The amount and date
      of issuance, renewal, extension or reissuance of a Letter of Credit
      pursuant to the Commitments shall be designated by the Company's written
      request delivered to Agent at least three (3) Business Days prior to the
      date of such issuance, renewal, extension or reissuance. Concurrently with
      or promptly following the delivery of the request for a Letter of Credit,
      the Company shall execute and deliver to the Agent an application and
      agreement with respect to the Letters of Credit, said application and
      agreement to be in the form used by the Agent. The Agent shall not be
      obligated to issue, renew, extend or reissue such Letters of Credit if (A)
      the amount thereof when added to the face amount of the outstanding
      Letters of Credit plus any Reimbursement Obligations exceeds Twenty
      Million Dollars ($20,000,000.00) or (B) the amount thereof when added to
      the Total Outstandings would exceed the Commitment. Borrowers agree to pay
      the Agent for the benefit of the Lenders commissions for issuing the
      Letters of Credit (calculated separately for each Letter of Credit) in an
      amount equal to the Applicable Margin then in effect for LIBOR Loans
      multiplied by the maximum face amount of the Letter of Credit; provided,
      however, at any time while an Event of Default has occurred and is
      continuing, the commission on the outstanding Letters of Credit shall be
      two percent (2%) per annum in excess of the commission otherwise payable
      under this Agreement on each such Letter of Credit. Borrowers further
      agree to pay Agent for its own account an additional fronting fee equal to
      one-eighth of one percent (.125%) per annum multiplied times the maximum
      face amount of each Letter of Credit. Such commissions shall be payable
      prior to the issuance of each Letter of Credit and thereafter on each
      anniversary date of such

Second Amended and Restated Credit Agreement - Page 20

<PAGE>

      issuance while such Letter of Credit is outstanding. Such commissions and
      fronting fee will be calculated based on the basis of a year consisting of
      360 days.

            (e) Voluntary Reduction of Commitment. Subject to the provisions of
      Section 5(e), the Company may at any time, or from time to time, upon not
      less than three (3) Business Days' prior written notice to Agent, reduce
      or terminate the Commitment; provided, however, that (i) each reduction in
      the Commitment must be in the amount of $1,000,000 or more, in increments
      of $1,000,000 and (ii) each reduction must be accompanied by a prepayment
      of the Notes in the amount by which the outstanding principal balance of
      the Notes exceeds the Commitment as reduced pursuant to this Section 2(e).

            (f) Mandatory Commitment Reductions. On any day that any Borrower or
      any Guarantor sells any of its Oil and Gas Properties, the Borrowing Base
      shall automatically be reduced by a sum equal to the amount of any
      prepayment required to be made pursuant to Section 12(r). If, as a result
      of any such reduction in the Borrowing Base, the Total Outstandings ever
      exceed the Borrowing Base then in effect, Borrowers shall make the
      mandatory prepayment of principal required pursuant to Section 9(b).

            (g) Several Obligations. The obligations of the Lenders under the
      Commitments are several and not joint. The failure of any Lender to make
      an Advance required to be made by it shall not relieve any other Lender of
      its obligation to make its Advance, and no Lender shall be responsible for
      the failure of any other Lender to make the Advance to be made by such
      other Lender. No Lender shall be required to lend hereunder any amount in
      excess of its legal lending limit.

            (h) Type and Number of Advances. Any Advance on the Commitment may
      be a Base Rate Loan or a LIBOR Loan, or a combination thereof, as selected
      by Borrower pursuant to Section 4. The total number of Tranches which may
      be outstanding at any time shall never exceed ten (10).

      3. NOTES EVIDENCING LOANS. The loans described above in Section 2 shall be
evidenced by promissory notes of Borrowers as follows:

            (a) Form of Notes. The Loans shall be evidenced by a Note or Notes
      in the aggregate face amount of $600,000,000, and shall be in the form of
      Exhibit "B" hereto with appropriate insertions. Notwithstanding the face
      amount of the Notes, the actual principal amount due from Borrowers to
      Lenders on account of the Notes, as of any date of computation, shall be
      the sum of Advances then and theretofore made on account thereof, less all
      principal payments actually received by Lenders in collected funds with
      respect thereto. Although the Notes may be dated as of the Effective Date,
      interest in respect thereof shall be payable only for the period during
      which the Loans evidenced thereby are outstanding and, although the stated
      amount of the Notes may be higher, the Notes shall be enforceable, with
      respect to Borrowers' obligation to pay the principal

Second Amended and Restated Credit Agreement - Page 21

<PAGE>

      amount thereof, only to the extent of the unpaid principal amount of the
      Loans. Irrespective of the face amount of the Notes, no Lender shall ever
      be obligated to advance on the Commitment any amount in excess of its
      Commitment Percentage then in effect.

            (b) Issuance of Additional Notes. At the Effective Date, there shall
      be outstanding Notes in the aggregate face amount of $600,000,000 payable
      to the order of Lenders. From time to time new Notes may be issued to
      other Lenders as such Lenders become parties to this Agreement. Upon
      request from Agent, Borrowers shall execute and deliver to Agent any such
      new or additional Notes. From time to time as new Notes are issued the
      Agent shall require that each Lender exchange its Note(s) for newly issued
      Note(s) to better reflect the extent of each Lender's Commitments
      hereunder.

            (c) Interest Rates. The unpaid principal balance of the Notes shall
      bear interest from time to time as set forth in Section 4.

            (d) Payment of Interest. Interest on the Notes shall be payable on
      each Interest Payment Date.

            (e) Payment of Principal. Principal of the Note or Notes shall be
      due and payable to the Agent, for the ratable benefit of the Lenders, on
      the Maturity Date unless earlier due in whole or in part as a result of an
      acceleration of the amount due or pursuant to the mandatory prepayment
      provisions of Section 9(b).

            (f) Payment to Lenders. Each Lender's Pro Rata Part of payment or
      prepayment of the Loans shall be directed by wire transfer to such Lender
      by the Agent at the address provided to the Agent for such Lender for
      payments no later than 2:00 p.m., Chicago, Illinois time on the Business
      Day such payments or prepayments are deemed hereunder to have been
      received by Agent; provided, however, in the event that any Lender shall
      have failed to make an Advance as contemplated under Section 2 (a
      "Defaulting Lender") and the Agent or another Lender or Lenders shall have
      made such Advance, payment received by Agent for the account of such
      Defaulting Lender or Lenders shall not be distributed to such Defaulting
      Lender or Lenders until such Advance or Advances shall have been repaid in
      full to the Lender or Lenders who funded such Advance or Advances. Any
      payment or prepayment received by Agent at any time after 12:00 noon,
      Chicago, Illinois, time on a Business Day shall be deemed to have been
      received on the next Business Day. Interest shall cease to accrue on any
      principal as of the end of the day preceding the Business Day on which any
      such payment or prepayment is deemed hereunder to have been received by
      Agent. If Agent fails to transfer any principal amount to any Lender as
      provided above, then Agent shall promptly direct such principal amount by
      wire transfer to such Lender.

            (g) Sharing of Payments, Etc. If any Lender shall obtain any payment
      (whether voluntary, involuntary, or otherwise) on account of the Loans,
      (including, without limitation, any set-off) which is in excess of its Pro
      Rata Part of payments on

Second Amended and Restated Credit Agreement - Page 22

<PAGE>

      either of the Loans, as the case may be, obtained by all Lenders, such
      Lender shall purchase from the other Lenders such participation as shall
      be necessary to cause such purchasing Lender to share the excess payment
      pro rata with each of them; provided that, if all or any portion of such
      excess payment is thereafter recovered from such purchasing Lender, the
      purchase shall be rescinded and the purchase price restored to the extent
      of the recovery. Borrowers agree that any Lender so purchasing a
      participation from another Lender pursuant to this Section may, to the
      fullest extent permitted by law, exercise all of its rights of payment
      (including the right of offset) with respect to such participation as
      fully as if such Lender were the direct creditor of Borrowers in the
      amount of such participation.

            (h) Non-Receipt of Funds by the Agent. Unless the Agent shall have
      been notified by a Lender or Borrowers (the "Payor") prior to the date on
      which such Lender is to make payment to the Agent of the proceeds of a
      Loan to be made by it hereunder or Borrower is to make a payment to the
      Agent for the account of one or more of the Lenders, as the case may be
      (such payment being herein called the "Required Payment"), which notice
      shall be effective upon receipt, that the Payor does not intend to make
      the Required Payment to the Agent, the Agent may assume that the Required
      Payment has been made and may, in reliance upon such assumption (but shall
      not be required to), make the amount thereof available to the intended
      recipient on such date and, if the Payor has not in fact made the Required
      Payment to the Agent, the recipient of such payment shall, on demand, pay
      to the Agent the amount made available to it together with interest
      thereon in respect of the period commencing on the date such amount was
      made available by the Agent until the date the Agent recovers such amount
      at a rate per annum equal to (x) in the case of payment by a Lender, the
      Federal Funds Effective Rate for such day for the first three days and,
      thereafter, the interest rate applicable to the relevant Loan or (y) in
      the case of payment by the Borrowers, the interest rate applicable to the
      relevant Loan.

      4. INTEREST RATES.

            (a) Options.

                  (i) Base Rate Loans. On all Base Rate Loans Borrowers agree to
            pay interest on the Notes calculated on the basis of the actual days
            elapsed in a year consisting of 365 days, or if appropriate, 366
            days with respect to the unpaid principal amount of each Base Rate
            Loan from the date the proceeds thereof are made available to
            Borrowers until maturity (whether by acceleration or otherwise), at
            a varying rate per annum equal to the lesser of (i) the Maximum
            Rate, or (ii) the Base Rate. Subject to the provisions of this
            Agreement as to prepayment, the principal of the Notes representing
            Base Rate Loans shall be payable as specified in Section 3(e) and
            the interest in respect to each Base Rate

Second Amended and Restated Credit Agreement - Page 23
<PAGE>

            Loan, shall bear interest, payable on demand, at a rate per annum
            equal to the Default Rate.

                  (ii) LIBOR Loans. On all LIBOR Loans Borrowers agree to pay
            interest calculated on the basis of a year consisting of 360 days
            with respect to the unpaid principal amount of each LIBOR Loan from
            the date the proceeds thereof are made available to Borrowers until
            maturity (whether by acceleration or otherwise), at a varying rate
            per annum equal to the lesser of (i) the Maximum Rate, or (ii) the
            LIBOR Rate. Subject to the provisions of this Agreement with respect
            to prepayment, the principal of the Notes shall be payable as
            specified in Section 3(e) and the interest with respect to each
            LIBOR Loan shall be payable on each Interest Payment Date applicable
            thereto. Past due principal and, to the extent permitted by law,
            past due interest shall bear interest, payable on demand, at a rate
            per annum equal to the Default Rate. Upon three (3) Business Days'
            written notice prior to the making by the Lenders of any LIBOR Loan
            (in the case of the initial Interest Period therefor) or the
            expiration date of each succeeding Interest Period (in the case of
            subsequent Interest Periods therefor), Borrowers shall have the
            option, subject to compliance by Borrowers with all of the
            provisions of this Agreement, as long as no Event of Default exists,
            to specify whether the Interest Period commencing on any such date
            shall be a one (1), two (2), three (3), six (6), nine (9) or twelve
            (12) month period, subject to availability. If Agent shall not have
            received timely notice of a designation of such Interest Period as
            herein provided, Borrowers shall be deemed to have elected to
            convert all maturing LIBOR Loans to Base Rate Loans.

            (b) Interest Rate Determination. The Agent shall determine each
      interest rate applicable to the Loans hereunder. The Agent shall give
      prompt notice to Borrowers and the Lenders of each rate of interest so
      determined and its determination thereof shall be conclusive absent error.

            (c) Conversion Option. Borrowers may elect from time to time (i) to
      convert all or any part of its LIBOR Loans to Base Rate Loans by giving
      Agent irrevocable notice of such election in writing prior to 10:00 a.m.
      (Chicago, Illinois time) on the conversion date and such conversion shall
      be made on the requested conversion date, provided that any such
      conversion of LIBOR Loan shall only be made on the last day of the
      Interest Period with respect thereof, (ii) to convert all or any part of
      its Base Rate Loans to LIBOR Loans by giving the Agent irrevocable written
      notice of such election no later than three (3) Business Days prior to the
      proposed conversion and such conversion shall be made on the requested
      conversion date or, if such requested conversion date is not a Business
      Day, on the next succeeding Business Day. Any such conversion shall not be

Second Amended and Restated Credit Agreement - Page 24

<PAGE>

      deemed to be a prepayment of any of the loans for purposes of this
      Agreement or the Notes.

            (d) Recoupment. If at any time the applicable rate of interest
      selected pursuant to Sections 4(a)(i) or 4(a)(ii) above shall exceed the
      Maximum Rate, thereby causing the interest on the Notes to be limited to
      the Maximum Rate, then any subsequent reduction in the interest rate so
      selected or subsequently selected shall not reduce the rate of interest on
      the Notes below the Maximum Rate until the total amount of interest
      accrued on the Note equals the amount of interest which would have accrued
      on the Notes if the rate or rates selected pursuant to Sections 4(a)(i) or
      4(a)(ii), as the case may be, had at all times been in effect.

            (e) Interest Rates Applicable After Default. Notwithstanding
      anything to the contrary contained in this Section 4, during the
      continuance of a Default or an Event of Default the Required Lenders may,
      at their option, by notice from Agent to Borrower (which notice may be
      revoked at the option of the Required Lenders notwithstanding the
      provisions of Section 15, which requires all Lenders to consent to changes
      in interest rates) declare that no Advance may be made as, converted into,
      or continued as a LIBOR Loan. During the continuance of an Event of
      Default, the Required Lenders, may, at their option, by notice from Agent
      to Borrowers (which notice may be revoked at the option of Required
      Lenders notwithstanding the provisions of Section 15, which requires all
      Lenders to consent to changes in interest rates) declare that (i) each
      LIBOR Loan shall bear interest for the remainder of the applicable
      Interest Period at the Default Rate and (ii) each Base Rate Loan shall
      bear interest at the Default Rate, provided that, during the continuance
      of an Event of Default under Section 14(f) or 14(g), the interest rate set
      forth in clauses (i) and (ii) above shall be applicable to all outstanding
      Loans without any election or action on the part of the Agent or any
      Lender.

            5. SPECIAL PROVISIONS RELATING TO LOANS.

            (a) Unavailability of Funds or Inadequacy of Pricing. In the event
      that, in connection with any proposed LIBOR Loan, the Agent reasonably
      determines, which determination shall, absent manifest error, be final,
      conclusive and binding upon all parties, due to changes in circumstances
      since the date hereof, adequate and fair means do not exist for
      determining the LIBOR Rate or such rate will not accurately reflect the
      costs to the Lenders of funding LIBOR Loans for such Interest Period, the
      Agent shall give notice of such determination to Borrowers and the
      Lenders, whereupon, until the Agent notifies Borrowers and the Lenders
      that the circumstances giving rise to such suspension no longer exist, the
      obligations of the Lenders to make, continue or convert Loans into LIBOR
      Loan shall be suspended, and all Loans to Borrowers shall be Base Rate
      Loans during the period of suspension.

            (b) Change in Laws. If at any time any new law or any change in
      existing laws or in the interpretation of any new or existing laws shall
      make it unlawful for any

Second Amended and Restated Credit Agreement - Page 25

<PAGE>

      Lender to make or continue to maintain or fund LIBOR Loans hereunder, then
      such Lender shall promptly notify Borrowers in writing and such Lender's
      obligation to make, continue or convert Loans into LIBOR Loans under this
      Agreement shall be suspended until it is no longer unlawful for such
      Lender to make or maintain LIBOR Loans. Upon receipt of such notice,
      Borrowers shall either repay the outstanding LIBOR Loans owed to such
      Lender, without penalty, on the last day of the current Interest Periods
      (or, if any Lender may not lawfully continue to maintain and fund such
      LIBOR Loans, immediately), or Borrowers may convert such LIBOR Loans at
      such appropriate time to Base Rate Loans.

            (c) Increased Cost or Reduced Return.

                  (i) If, after the date hereof, the adoption of any applicable
            law, rule, or regulation, or any change in any applicable law, rule,
            or regulation, or any change in the interpretation or administration
            thereof by any governmental authority, central bank, or comparable
            agency charged with the interpretation or administration thereof, or
            compliance by any Lender with any request or directive (whether or
            not having the force of law) of any such governmental authority,
            central bank, or comparable agency:

                        (A) shall subject such Lender to any tax, duty, or other
                  charge with respect to any LIBOR Loans, its Notes, or its
                  obligation to make LIBOR Loans, or change the basis of
                  taxation of any amounts payable to such Lender under this
                  Agreement or its Notes in respect of any LIBOR Loan (other
                  than franchise taxes and taxes imposed on or measured by the
                  overall net income of such Lender);

                        (B) shall impose, modify, or deem applicable any
                  reserve, special deposit, assessment, or similar requirement
                  (other than reserve requirements, if any, taken into account
                  in the determination of the LIBOR Rate) relating to any
                  extensions of credit or other assets of, or any deposits with
                  or other liabilities or commitments of, such Lender, including
                  the Commitment of such Lender hereunder; or

                        (C) shall impose on such Lender or on the London
                  interbank market any other condition affecting this Agreement
                  or its Notes or any of such extensions of credit or
                  liabilities or commitments;

Second Amended and Restated Credit Agreement - Page 26

<PAGE>

            and the result of any of the foregoing is to increase the cost to
            such Lender of making, converting into, continuing, or maintaining
            any LIBOR Loan or to reduce any sum received or receivable by such
            Lender under this Agreement or its Notes with respect to any LIBOR
            Loan, then Borrowers shall pay to such Lender on demand such amount
            or amounts as will reasonably compensate such Lender for such
            increased cost or reduction. If any Lender requests compensation by
            Borrowers under this Section 5(c), Borrowers may, by notice to such
            Lender (with a copy to Agent), suspend the obligation of such Lender
            to make or continue LIBOR Loans, or to convert all or part of the
            Base Rate Loans owing to such Lender to LIBOR Loans, until the event
            or condition giving rise to such request ceases to be in effect (in
            which case the provisions of Section 5(c) shall be applicable);
            provided that such suspension shall not affect the right of such
            Lender to receive the compensation so requested.

                  (ii) If, after the Effective Date, any Lender shall have
            reasonably determined that the adoption of any applicable law, rule,
            or regulation regarding capital adequacy or any change therein or in
            the interpretation or administration thereof by any governmental
            authority, central bank, or comparable agency charged with the
            interpretation or administration thereof, or any request or
            directive regarding capital adequacy (whether or not having the
            force of law) of any such governmental authority, central bank, or
            comparable agency, has or would have the effect of reducing the rate
            of return on the capital of such Lender or any corporation
            controlling such Lender as a consequence of such Lender's
            obligations hereunder to a level below that which such Lender or
            such corporation could have achieved but for such adoption, change,
            request, or directive (taking into consideration its policies with
            respect to capital adequacy), then from time to time upon demand
            Borrowers shall pay to such Lender such additional amount or amounts
            as will reasonably compensate such Lender for such reduction.

                  (iii) Each Lender shall promptly notify Borrowers and Agent of
            any event of which it has knowledge, occurring after the Effective
            Date, which will entitle such Lender to compensation pursuant to
            this Section 5(c) and will designate an alternative Lending
            Installation, if applicable, if such designation will avoid the need
            for, or reduce the amount of, such compensation and will not, in the
            judgment of such Lender, be otherwise disadvantageous to it. Any
            Lender claiming compensation under this Section 5(c) shall furnish
            to Borrowers and Agent a statement setting forth the additional
            amount or amounts to be paid to it hereunder which shall be
            conclusive in the absence of manifest error. In

Second Amended and Restated Credit Agreement - Page 27

<PAGE>

            determining such amount, such Lender may use any reasonable
            averaging and attribution methods.

                  (iv) Any Lender giving notice to Borrowers through the Agent
            pursuant to Section 5(c) shall give to Borrowers a statement signed
            by an officer of such Lender setting forth in reasonable detail the
            basis for, and the calculation of such additional cost, reduced
            payments or capital requirements, as the case may be, and the
            additional amounts required to compensate such Lender therefor.

                  (v) Within five (5) Business Days after receipt by Borrowers
            of any notice referred to in Section 5(c), Borrowers shall pay to
            the Agent for the account of the Lender issuing such notice such
            additional amounts as are required to compensate such Lender for the
            increased cost, reduced payments or increased capital requirements
            identified therein, as the case may be.

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

            (d) Discretion of Lender as to Manner of Funding. Notwithstanding
      any provisions of this Agreement to the contrary, each Lender shall be
      entitled to fund and maintain its funding of all or any part of its Loan
      in any manner it sees fit, it being understood, however, that for the
      purposes of this Agreement all determinations hereunder shall be made as
      if each Lender had actually funded and maintained each LIBOR Loan through
      the purchase of deposits having a maturity corresponding to the last day
      of the Interest Period applicable to such LIBOR Loan and bearing an
      interest rate at the applicable interest rate for such Interest Period.

            (e) Breakage Fees. Without duplication under any other provision
      hereof, if any Lender incurs any loss, cost or expense including, without
      limitation, any loss of profit and loss, cost, expense or premium
      reasonably incurred by reason of the liquidation or re-employment of
      deposits or other funds acquired by such Lender to fund or maintain any
      LIBOR Loan or the relending or reinvesting of such deposits or amounts
      paid or prepaid to the Lenders as a result of any of the following events
      other than any such occurrence as a result in the change of circumstances
      described in Sections 5(a) and (b):

                  (i) any payment, prepayment or conversion of a LIBOR Loan on a
            date other than the last day of its Interest Period (whether by
            acceleration, prepayment or otherwise);

                  (ii) any failure to make a principal payment of a LIBOR Loan
            on the due date thereof; or

Second Amended and Restated Credit Agreement - Page 28

<PAGE>

                  (iii) any failure by Borrowers to borrow, continue, prepay or
            convert to a LIBOR Loan on the dates specified in a notice given
            pursuant to Section 2(b) or 4(c);

      then Borrowers shall pay to such Lender such amount as will reimburse such
      Lender for such loss, cost or expense. If any Lender makes such a claim
      for compensation, it shall furnish to Borrowers and Agent a statement
      setting forth the amount of such loss, cost or expense in reasonable
      detail (including an explanation of the basis for and the computation of
      such loss, cost or expense) and the amounts shown on such statement shall
      be conclusive and binding absent manifest error.

            (f) Joint and Several Liability. The Obligations shall constitute
      one joint and several direct and general obligation of the Borrowers.
      Notwithstanding anything to the contrary contained herein, each of the
      Borrowers shall be jointly and severally, with each other Borrower,
      directly and unconditionally liable to the Agent, the Lenders and, with
      respect to any Rate Management Obligations, each Lender Counterparty, for
      all Obligations and shall have the obligations of co-maker with respect to
      the Loans, the Notes, and the other Obligations, it being agreed that the
      Advances to each Borrower inure to the benefit of all Borrowers, and that
      the Administrative Agent, the Lenders and their Affiliates are relying on
      such joint and several liability of the Borrowers as co-makers in
      extending the Loans and Rate Management Obligations hereunder and under
      the Rate Management Transactions.

            (g) Replacement of Lenders. In the event that (i) any Lender
      suspends its obligations to make LIBOR Loans pursuant to Section 5(b) or
      requests compensation under Section 5(c), (any Lender so affected an
      "Affected Lender"), or (ii) in connection with any proposed amendment,
      modification, termination, waiver or consent with respect to this
      Agreement or any other Loan Document as contemplated by Section 24, the
      consent of Required Lenders shall have been obtained but the consent of
      one or more of such other Lenders (each a "Non-Consenting Lender") whose
      consent is required has not been obtained; then Borrowers, with the
      consent of the Agent, shall have the right to remove or replace such
      Affected Lender or Non-Consenting Lender (a "Terminated Lender") as a
      party to this Agreement, Borrowers may, upon notice to such Lender and
      Agent and with the consent of the Agent, (i) remove such Terminated Lender
      by terminating such Lender's Revolving Commitment, or (ii) replace such
      Terminated Lender by causing such Terminated Lender to assign its
      Revolving Commitment (without payment of any assignment fee) pursuant to
      Section 28 to one or more other Lenders or other Persons procured by
      Borrowers and approved by Agent. Borrowers shall pay in full all
      principal, interest, fees, and other amounts owing to such Terminated
      Lender through the date of termination or assignment. Any Terminated
      Lender being replaced shall execute and deliver an Assignment and
      Acceptance with respect to such Terminated Lender's Commitment and
      outstanding Loans.

Second Amended and Restated Credit Agreement - Page 29

<PAGE>

            (h) Designated Senior Debt. The Company hereby designates the
      Obligations as " Designated Senior Debt," as such term is defined in the
      Indenture, and agrees to take any and all actions required under the
      Indenture, if any, to cause the Obligations to be "Designated Senior Debt"
      under the Indenture.

      6. COLLATERAL SECURITY. To secure the performance by Borrowers and the
Guarantors of the Obligations, whether now or hereafter incurred, matured or
unmatured, direct or contingent, joint or several, or joint and several,
including extensions, modifications, renewals and increases thereof, and
substitutions therefor, Borrowers and the Guarantors have heretofore granted and
shall herewith or hereafter grant and assign to Agent for the ratable benefit of
the Lenders a first and prior Lien or Liens on certain of their Oil and Gas
Properties, certain related equipment, oil and gas inventory and proceeds of the
foregoing. The Oil and Gas Properties heretofore and hereafter assigned and
mortgaged to the Agent by Borrowers and the Guarantors shall represent not less
than 80% of the Engineered Value (as hereinafter defined) of Borrowers' and
Guarantors' Oil and Gas Properties, taken as a whole. In addition to the
mortgaging of the Oil and Gas Properties, each Borrower shall (i) pledge to the
Agent for the benefit of the Lenders a first and prior lien on all of the issued
and outstanding Capital Stock of each of their Material Domestic Subsidiaries,
and (ii) to cause each Material Domestic Subsidiary (other than GLEP) to provide
to the Agent, for the benefit of the Lenders, a Guaranty. All Rate Management
Obligations of any Borrower or any Guarantor to any Lender Counterparty shall be
secured by the Collateral (as hereinafter defined) on a pari passu basis with
the other Obligations of Borrower and the Guarantors under the Loan Documents
and such Rate Management Obligations shall continue to be secured by the
Collateral on a pari passu basis with such Obligations regardless of whether the
Person counterparty to such Rate Management Obligation ceases to be a Lender or
an Affiliate of a Lender at any time thereafter. All Oil and Gas Properties and
other assets, properties or interests in which Borrowers or any Guarantor
herewith grants or hereafter grants to Agent for the ratable benefit of the
Lenders a first and prior Lien (to the satisfaction of the Agent) in accordance
with this Section 6, including the Oil and Gas Properties, as such assets,
properties and interests are from time to time constituted, are hereinafter
collectively called the "Collateral".

      The granting and assigning of such security interests and Liens by
Borrowers and certain of the Guarantors shall be pursuant to Security
Instruments in form and substance reasonably satisfactory to the Agent.
Concurrently with the delivery of each of the Security Instruments or within a
reasonable time thereafter, Borrowers and Guarantors shall have furnished or
caused to be furnished to the Agent mortgage and title opinions and other title
information reasonably satisfactory to Agent with respect to the title and Lien
status of (i) the Company and the Guarantors' interests in not less than 80% of
the Engineered Value of the mortgaged Oil and Gas Properties of the Company and
the Guarantors, taken as a whole, and (ii) GLEP's interests in not less than 30%
of the Engineered Value of the mortgaged Oil and Gas Properties of GLEP.
"Engineered Value" for this purpose shall mean future net revenues discounted at
the discount rate being used by the Agent as of the date of any such
determination utilizing the pricing parameters used in the engineering report
furnished to the Agent pursuant to Sections 7 and 12.

Second Amended and Restated Credit Agreement - Page 30

<PAGE>

Borrowers will cause to be executed and delivered to the Agent, in the future,
additional Security Instruments if the Agent reasonably deems such are necessary
to insure perfection or maintenance of Lenders' security interests and Liens in
not less than 80% of the Engineered Value of the Oil and Gas Properties or any
part thereof of Borrowers and the Guarantors, taken as a whole.

      7. BORROWING BASE.

            (a) Borrowing Base. Subject to Section 7(b), as of the Effective
      Date, the Borrowing Base shall be $500,000,000.

            (b) Subsequent Determinations of Borrowing Base. Subsequent
      determinations of the Borrowing Base shall be made by the Lenders
      semi-annually on April 1 and October 1 of each year beginning October 1,
      2004 or as Unscheduled Redeterminations. By March 1 each year, beginning
      March 1, 2005, Borrowers shall furnish to the Lenders an engineering
      report in form and substance reasonably satisfactory to Agent prepared by
      an independent petroleum engineering firm acceptable to Agent, said
      engineering report to utilize economic and pricing parameters used by the
      Agent as established from time to time, together with such other
      information, reports and data concerning the value of the Oil and Gas
      Properties as Agent shall deem reasonably necessary to determine the value
      of such Oil and Gas Properties. By September 1 of each year beginning
      September 1, 2004, or within thirty (30) days after either (i) receipt of
      notice from Agent that the Lenders require an Unscheduled Redetermination,
      or (ii) Borrowers give notice to Agent of its desire to have an
      Unscheduled Redetermination performed, in each case Borrowers shall
      furnish to the Lenders an engineering report in form and substance
      reasonably satisfactory to Agent, said engineering report to utilize
      economic and pricing parameters used by the Agent as established from to
      time, together with such other information, reports and data concerning
      the value of such Oil and Gas Properties. Agent shall by written notice to
      Borrowers no later than April 1 and October 1 of each year, or within a
      reasonable time thereafter (herein called the "Determination Date"),
      notify Borrowers of the designation by the Lenders of the new Borrowing
      Base for the period beginning on such Determination Date and continuing
      until, but not including, the next Determination Date. If an Unscheduled
      Redetermination is to be made by the Lenders, the Agent shall notify
      Borrowers within a reasonable time after receipt of all requested
      information of the new Borrowing Base, and such new Borrowing Base shall
      continue until the next Determination Date. If Borrowers do not furnish
      all such information, reports and data by any date specified in this
      Section 7(b), unless such failure is reasonably determined by the Agent to
      be of no fault of Borrowers, the Lenders nonetheless designate the
      Borrowing Base at any amounts which the Lenders in their reasonable
      discretion determine and redesignate the Borrowing Base from time to time
      thereafter until the Lenders receive all such information, reports and
      data, whereupon the Lenders shall designate a new Borrowing Base, as
      described above. The procedure for determining the Borrowing Base at each

Second Amended and Restated Credit Agreement - Page 31

<PAGE>

      redetermination shall be that the Agent shall determine the Borrowing Base
      and submit the same to the Lenders. Increases in the Borrowing Base will
      require approval of all Lenders, but other reaffirmation or changes in the
      Borrowing Base will be subject to the approval of Super Majority Lenders.
      If any redetermined Borrowing Base is not approved by Super Majority
      Lenders within twenty (20) days after submission to the Lenders by Agent
      of the proposed amount, the Agent shall notify each of the Lenders that
      the proposed Borrowing Base has not been approved and each Lender will
      submit within ten (10) days thereafter its proposed Borrowing Base. The
      redetermined Borrowing Base shall be then determined (in all cases except
      those involving an increase of the Borrowing Base which requires approval
      of all Lenders) based upon the weighted arithmetic average of the proposed
      amounts submitted by each Lender, said proposals to be weighted according
      to each Lender's Commitment. Each Lender shall determine the amount of the
      Borrowing Base based upon the loan collateral value which such Lender in
      its sole discretion (using such methodology, assumptions and discount
      rates as such Lender customarily uses in assigning collateral value to oil
      and gas properties, oil and gas gathering systems, gas processing and
      plant operations) assigns to such Oil and Gas Properties of Borrowers and
      the Guarantors at the time in question and based upon such other credit
      factors consistently applied (including, without limitation, the assets,
      liabilities, cash flow, business, properties, prospects, management and
      ownership of Borrowers and their affiliates) as such Lender customarily
      considers in evaluating similar oil and gas credits. If at any time any of
      the Oil and Gas Properties are sold, the Borrowing Base then in effect
      shall automatically be reduced by a sum equal to the amount of prepayment,
      if any, required to be made pursuant to Section 12(r). It is expressly
      understood that the Lenders have no obligation to designate the Borrowing
      Base at any particular amounts, except in the exercise of their
      discretion, whether in relation to the Commitments or otherwise; provided,
      however, that the Lenders shall not have the obligation to designate a
      Borrowing Base in an amount in excess of the Commitment.

      8. FEES.

            (a) Unused Commitment Fee. Borrowers shall pay to Agent, for the
      ratable benefit of the Lenders, an unused commitment fee (the "Unused
      Commitment Fee") equivalent to the Applicable Margin times the daily
      average of the sum of the Borrowing Base minus Total Outstandings. Such
      Unused Commitment Fee shall be calculated on the basis of a year
      consisting of 360 days. The Unused Commitment Fee shall be payable in
      arrears on the last day of each calendar quarter beginning June 30, 2004
      with the final fee payment due on the Maturity Date for any period then
      ending for which the Unused Commitment Fee shall not have been theretofore
      paid. In the event the Commitment terminates on any date prior to the end
      of any such quarterly period, Borrowers shall pay to the Agent for the
      ratable benefit of the Lenders, on the date of such termination, the total
      Unused Commitment Fee due for the period in which such termination occurs.
      If a

Second Amended and Restated Credit Agreement - Page 32

<PAGE>

      date for payment of the Unused Commitment Fee shall be other than a
      Business Day such payment shall be made on the next succeeding Business
      Day.

            (b) Agent and Arranger Fees. The Borrowers agree to pay to the Agent
      and the Arranger, for their respective accounts, the fees agreed to by the
      Borrowers, the Agent and the Arranger pursuant to that certain letter
      agreement dated June 2, 2004, or as otherwise agreed from time to time.

      9. PREPAYMENTS.

            (a) Voluntary Prepayments. Subject to the provisions of Section
      5(e), Borrowers may at any time and from time to time, without penalty or
      premium, prepay the Notes, in whole or in part. Each such prepayment (i)
      on LIBOR Loans shall be made on at least three (3) Business Days' prior
      written notice to Agent in a minimum amount of $1,000,000 or any integral
      multiple of $1,000,000 in excess thereof (or the unpaid balance of the
      Notes, whichever is less) plus accrued interest thereon to the date of
      prepayment and (ii) on Base Rate Loans may be made with prior written
      notice to Agent given on the same day of such prepayment in a minimum
      amount of $100,000 or any integral multiple of $100,000 in excess thereof
      (or the unpaid balance on the Notes, whichever is less) plus accrued
      interest thereon to the date of prepayment.

            (b) Mandatory Prepayment For Borrowing Base Deficiency. In the event
      the Total Outstandings ever exceed the Borrowing Base as determined by
      Lenders pursuant to Section 7(b) and 7(c) (a "Borrowing Base Deficiency"),
      Borrowers shall, within ninety (90) days after written notification from
      the Agent, either (A) by instruments reasonably satisfactory in form and
      substance to the Lender, provide the Agent with Collateral with value and
      quality in amounts satisfactory to all of the Lenders in their discretion
      in order to increase the Borrowing Base by an amount at least equal to
      such excess, or (B) prepay, without premium or penalty, the principal
      amount of the Notes in an amount at least equal to such excess plus
      accrued interest thereon to the date of prepayment, or (C) prepay, without
      premium or penalty, the principal amount of such excess in not more than
      two (2) equal installments to be applied to principal plus accrued
      interest thereon with the first such installment being due upon the 90th
      day after receipt of notice of such deficiency with the remaining
      installment being due in one hundred eighty (180) days of receipt of
      notice of such deficiency. If the Total Outstandings ever exceed the
      Commitment or the Borrowing Base as a result of a required reduction in
      the Commitment or the Borrowing Base pursuant to Section 2(f), then in
      such event, Borrowers shall, upon written notice, immediately prepay the
      principal amount of the Notes in an amount at least equal to such excess
      plus accrued interest to the date of prepayment.

      10. REPRESENTATIONS AND WARRANTIES. In order to induce the Lenders to
enter into this Agreement, Borrowers represent and warrant to the Lenders (which
representations and warranties will survive the delivery of the Notes) that:

Second Amended and Restated Credit Agreement - Page 33

<PAGE>

            (a) Creation and Existence. The Company is a corporation duly
      organized, validly existing and in good standing under the laws of the of
      the State of Delaware and is duly qualified in all jurisdictions wherein
      failure to qualify may result in a Material Adverse Effect. GLEP is a
      limited liability company duly and property organized, validly existing
      and in good standing under the laws of Delaware and is duly qualified in
      all jurisdictions wherein failure to qualify may result in a Material
      Adverse Effect. Each of the Guarantors is a corporation, partnership or
      limited liability company duly and properly incorporated or organized,
      validly existing and in good standing under the laws of its jurisdiction
      of incorporation or organization and is duly qualified in all
      jurisdictions wherein failure to qualify may result in a Material Adverse
      Effect. Each Borrower and each Guarantor has all corporate power and
      authority to own their respective properties and assets and to transact
      the business in which they are engaged.

            (b) Power and Authority. Each Borrower is duly authorized and
      empowered to create and issue the Notes; and each Borrower and each
      Guarantor is duly authorized and empowered to execute, deliver and perform
      their respective Loan Documents, including this Agreement; and all action
      on each Borrower's and each Guarantor's part requisite for the due
      creation and issuance of the Notes and for the due execution, delivery and
      performance of the Loan Documents, including this Agreement, has been duly
      and effectively taken.

            (c) Binding Obligations. This Agreement does, and the Notes and
      other Loan Documents upon their creation, issuance, execution and delivery
      will, constitute valid and binding obligations of each Borrower and each
      Guarantor, respectively, enforceable in accordance with its respective
      terms (except that enforcement may be subject to general principles of
      equity and any applicable bankruptcy, insolvency, or similar debtor relief
      laws now or hereafter in effect and relating to or affecting the
      enforcement of creditors' rights generally).

            (d) No Legal Bar or Resultant Lien. The Notes and the Loan
      Documents, including this Agreement, do not and will not, to the best of
      each Borrower's or each Guarantor's knowledge violate or conflict with or
      result in a default under any provisions of any Borrower's or any
      Guarantor's charter, bylaws or other organizational documents or any
      contract, agreement, law, regulation, order, injunction, judgment, decree
      or writ to which any Borrower or any Guarantor is subject, or result in
      the creation or imposition of any lien or other encumbrance upon any
      assets or properties of any Borrower or any Guarantor, other than those
      contemplated by this Agreement.

            (e) No Consent. The execution, delivery and performance by Borrowers
      of the Notes and the execution, delivery and performance by each Borrower
      and each Guarantor of the other Loan Documents, including this Agreement,
      does not require the consent or approval of any other Person or entity,
      including without limitation any regulatory authority or governmental body
      of the United States or any state thereof or any political subdivision of
      the United States or any state thereof except for consents required

Second Amended and Restated Credit Agreement - Page 34

<PAGE>

      for federal, state and, in some instances, private leases, right of ways
      and other conveyances or encumbrances of oil and gas leases all of which
      shall have been obtained.

            (f) Financial Condition. The audited consolidated Financial
      Statements of the Company dated as of December 31, 2003 which have been
      delivered to Lenders by the Company are complete and correct in all
      material respects and fully and accurately reflect in all material
      respects the financial conditions and the results of the operations of the
      Company and its Subsidiaries as of such date and for the period stated and
      no change has occurred between such date and the Effective Date in the
      condition, financial or otherwise of the Company or its Subsidiaries which
      is reasonably expected to have a Material Adverse Effect, except as
      disclosed to Lenders in Schedule "2" attached hereto.

            (g) Liabilities. Neither Borrowers nor any Guarantor has any
      material liability, direct or contingent on the Effective Date, except as
      disclosed to the Lenders in the Financial Statements or on Schedule "3"
      attached hereto. No unusual or unduly burdensome restrictions, restraint,
      or hazard exists by contract, law or governmental regulation or otherwise
      relative to the business, assets or properties of any Borrower or any
      Guarantor which is reasonably expected to have a Material Adverse Effect
      or which involve any of the Loan Documents.

            (h) Litigation. Except as described in the Financial Statements, or
      as otherwise disclosed to the Lenders in Schedule "4" attached hereto, on
      the Effective Date there is no litigation, legal or administrative
      proceeding, investigation or other action of any nature pending or, to the
      knowledge of any directors or the officers of any Borrower or any
      Guarantor, threatened against or affecting any Borrower or any Guarantor
      which involves the possibility of any judgment or liability not fully
      covered by insurance, and which is reasonably expected to have a Material
      Adverse Effect.

            (i) Taxes; Governmental Charges. Each Borrower and each Guarantor
      has filed all tax returns and reports required to be filed and has paid
      all taxes, assessments, fees and other governmental charges levied upon it
      or its assets, properties or income which are due and payable, including
      interest and penalties, the failure of which to pay could reasonably be
      expected to have a Material Adverse Effect, except such as are being
      contested in good faith by appropriate proceedings and for which adequate
      reserves for the payment thereof as required by GAAP has been provided and
      levy and execution thereon have been stayed and continue to be stayed.

            (j) Titles, Etc. Each Borrower and each Guarantor has good and
      defensible title to all of their material assets, including without
      limitation, the Oil and Gas Properties, free and clear of all Liens or
      other encumbrances except Permitted Liens.

            (k) Defaults. Neither Borrowers nor any Guarantor is in default and
      no event or circumstance has occurred which, but for the passage of time
      or the giving of notice, or both, would constitute a default under any
      loan or credit agreement, indenture, mortgage,

Second Amended and Restated Credit Agreement - Page 35

<PAGE>

      deed of trust, security agreement or other agreement or instrument to
      which any Borrower or any Guarantor is a party in any respect that would
      be reasonably expected to have a Material Adverse Effect. No Default or
      Event of Default hereunder has occurred and is continuing.

            (l) Casualties; Taking of Properties. Since the dates of the latest
      Financial Statements of the Company delivered to Lenders, there has been
      no change in the business, properties, condition (financial or otherwise)
      or results of operations of Borrowers (to the extent it is reasonably
      expected to cause a Material Adverse Effect), as a result of any fire,
      explosion, earthquake, flood, drought, windstorm, accident, strike or
      other labor disturbance, embargo, requisition or taking of property or
      cancellation of contracts, permits or concessions by any domestic or
      foreign government or any agency thereof, riot, activities of armed forces
      or acts of God or of any public enemy.

            (m) Use of Proceeds; Margin Stock. The proceeds of the Loans may be
      used by Borrowers solely for (i) the payment of the purchase price for the
      GLEP Acquisition, (ii) the renewal, extension, rearrangement and
      modification of all indebtedness and obligations of the Borrowers under or
      in connection with the Original Credit Agreement (iii) the payment of the
      fees, costs and expenses incurred in connection with the Related
      Transactions, (iv) working capital, (v) the acquisition, exploration, and
      development of oil and gas properties, and (vi) other general corporate
      purposes, including, without limitation, the purchase of Junior Securities
      to the extent permitted under Section 13(f). Borrowers are not engaged
      principally or as one of their important activities in the business of
      extending credit for the purpose of purchasing or carrying any "margin
      stock " as defined in Regulation U of the Board of Governors of the
      Federal Reserve System (12 C.F.R. Part 221), or for the purpose of
      reducing or retiring any indebtedness which was originally incurred to
      purchase or carry a margin stock or for any other purpose which might
      constitute this transaction a "purpose credit" within the meaning of said
      Regulation U.

            Neither Borrowers nor any Person or entity acting on behalf of any
      Borrower has taken or will take any action which might cause the loans
      hereunder or any of the Loan Documents, including this Agreement, to
      violate Regulation U or any other regulation of the Board of Governors of
      the Federal Reserve System or to violate the Securities Exchange Act of
      1934 or any rule or regulation thereunder, in each case as now in effect
      or as the same may hereafter be in effect.

            (n) Location of Business and Offices. The principal place of
      business and chief executive offices of each Borrower and each Guarantor
      is located at the address as stated in Section 17.

            (o) Compliance with the Law. To the best of each Borrower's
      knowledge, neither Borrowers nor any Guarantor:

Second Amended and Restated Credit Agreement - Page 36

<PAGE>

                  (i) is in violation of any law, judgment, decree, order,
            ordinance, or governmental rule or regulation to which any Borrower,
            any Guarantor, or any of its assets or properties are subject; or

                  (ii) has failed to obtain any license, permit, franchise or
            other governmental authorization necessary to the ownership of any
            of its assets or properties or the conduct of its business;

      which violation or failure is reasonably expected to have a Material
      Adverse Effect.

            (p) No Material Misstatements. No information, exhibit or report
      furnished by any Borrower or any Guarantor to the Lenders in connection
      with the negotiation of this Agreement contained any material misstatement
      of fact or omitted to state a material fact or any fact necessary to make
      the statements contained therein not materially misleading.

            (q) Not A Utility. None of Borrowers is a utility subject to
      regulation under the laws of in the State of Texas as a result of being
      engaged in the (i) generation, transmission, or distribution and sale of
      electric power; (ii) transportation, distribution and sale through a local
      distribution system of natural or other gas for domestic, commercial,
      industrial, or other use; (iii) provision of telephone or telegraph
      service to others; (iv) production, transmission, or distribution and sale
      of steam or water; (v) operation of a railroad; or (vii) provision of
      sewer service to others.

            (r) ERISA. Each Borrower is in compliance in all material respects
      with the applicable provisions of ERISA, and no "reportable event", as
      such term is defined in Section 403 of ERISA, has occurred with respect to
      any Plan of any Borrower.

            (s) Public Utility Holding Company Act. Neither of Borrowers is a
      "holding company", or "subsidiary company" of a "holding company", or an
      "affiliate" of a "holding company" or of a "subsidiary company" of a
      "holding company", or a "public utility" within the meaning of the Public
      Utility Holding Company Act of 1935, as amended.

            (t) Legal Names. The exact legal name of the Company and each of its
      Subsidiaries, their respective jurisdiction of organization, dates of
      organization, organizational identification numbers and taxpayer
      identification numbers are listed on Schedule "5" hereto.

            (u) Environmental Matters. Except as disclosed on Schedule "6", as
      of the Effective Date neither Borrowers nor any Guarantor (i) has received
      notice or otherwise learned or is otherwise aware of any Environmental
      Liability which would be reasonably expected to individually or in the
      aggregate have a Material Adverse Effect arising in connection with (A)
      any non-compliance with or violation of the requirements of any

Second Amended and Restated Credit Agreement - Page 37

<PAGE>

      Environmental Law or (B) the release or threatened release of any toxic or
      hazardous waste into the environment, (ii) has received notice or
      otherwise is aware of any threatened or actual liability in connection
      with the release or notice of any threatened release of any toxic or
      hazardous waste into the environment which would be reasonably expected to
      individually or in the aggregate have a Material Adverse Effect or (iii)
      has received notice or otherwise learned of or is otherwise aware of any
      federal or state investigation evaluating whether any remedial action is
      needed to respond to a release or threatened release of any toxic or
      hazardous waste into the environment for which any Borrower or any
      Guarantor is or may be liable which would reasonably be expected to result
      in a Material Adverse Effect.

            (v) Liens. Except for Permitted Liens, the assets and properties of
      each Borrower and each Guarantor are free and clear of all Liens and
      encumbrances.

            (w) Solvency. Immediately after the consummation of the Related
      Transactions and after giving effect to the application of the proceeds of
      such Loans, (a) the fair value of the assets of each Borrower and each
      Guarantor on a consolidated basis, at a fair valuation, will exceed their
      respective debts and liabilities, subordinated, contingent or otherwise;
      (b) the present fair saleable value of the property of each Borrower and
      each Guarantor on a consolidated basis will be greater than the amount
      that will be required to pay the probable liability of their respective
      debts and other liabilities, subordinated, contingent or otherwise, as
      such debts and liabilities become absolute and matured; (c) each Borrower
      and each Guarantor on a consolidated basis will be able to pay their
      respective debts and liabilities, subordinated, contingent or otherwise,
      as such debts and liabilities become absolute and matured; and (d) each
      Borrower and each Guarantor on a consolidated basis will not have
      unreasonably small capital with which to conduct the business in which
      they are engaged as such business is now conducted and is proposed to be
      conducted following the Effective Date.

            (x) Insurance. All insurance reasonably necessary in the ordinary
      course of Borrowers' and any Guarantor's business is maintained by or on
      behalf of Borrower and any such Guarantor and all premiums in respect of
      such insurance have been paid.

            (y) Consummation of the GLEP Acquisition. The GLEP Acquisition has
      been duly consummated in accordance with the terms of the GLEP Acquisition
      Agreement without amendment or waiver of any material term or provision
      thereof. True and correct copies of the GLEP Acquisition Agreement
      (including all amendments or modifications thereof) have been delivered to
      Agent pursuant to Section 11.1(xiv). Neither the Company nor GLEP is in
      default, and to the knowledge of the Company neither FirstEnergy nor
      Marbel is in default, under the GLEP Acquisition Agreement or under any
      instrument or document to be delivered in connection therewith. All of the
      transactions engaged in by the Company, GLEP and their Affiliates as part
      of the GLEP Acquisition were legal and valid and in compliance with all
      applicable law.

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<PAGE>

      11. CONDITIONS OF LENDING.

      (a) The effectiveness of this Agreement, and the obligation to make the
initial Advance or issue any initial Letter of Credit under the Commitment shall
be subject to satisfaction of the following conditions precedent:

            (i) Borrowers' Execution and Delivery. Each Borrower shall have
      executed and delivered the Agreement, the Notes and other required Loan
      Documents, all in form and substance satisfactory to the Agent;

            (ii) Guarantors' Execution and Delivery. Each Material Domestic
      Subsidiary shall have executed and delivered its Guaranty in the form of
      Exhibit "C" and each other Loan Document required under this Agreement;

            (iii) Legal Opinions. The Agent shall have received from Borrowers'
      and Guarantors' legal counsel one or more favorable legal opinions in form
      and substance reasonably satisfactory to the Agent as to each Borrower's
      and each Guarantor's status and the enforceability and legal and binding
      effect of the transactions contemplated by this Agreement and any of the
      other Loan Documents;

            (iv) Resolutions. The Agent shall have received appropriate
      certified corporate resolutions of each Borrower and each Guarantor
      authorizing the execution of each Loan Document to which it is a party and
      Agent shall have received any other information required by Section 326 of
      the USA PATRIOT ACT or necessary for the Agent or any Lender to verify the
      identity of any Borrower or any Guarantor as required by Section 326 of
      the USA PATRIOT ACT;

            (v) Good Standing. The Agent shall have received evidence of
      existence and good standing for each Borrower and each Guarantor;

            (vi) Incumbency. The Agent shall have received a signed certificate
      of each Borrower and each Guarantor, certifying the names of the officers
      of each Borrower and each Guarantor authorized to sign loan documents on
      behalf of such Borrower and such Guarantor, together with the true
      signatures of each such officer. The Agent may conclusively rely on such
      certificate until the Agent receives a further certificate of any Borrower
      and any Guarantor canceling or amending the prior certificate and
      submitting signatures of the officers named in such further certificate;

            (vii) Organizational Documents. The Agent shall have received copies
      of the Organizational Documents for each Borrower and each Guarantor
      together with all amendments thereto, appropriately certified by
      governmental authority in

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<PAGE>

      the jurisdiction of incorporation of each Borrower and each Guarantor or
      one or more officers of each Borrower or each Guarantor, as the case may
      be, as being true, correct and complete;

            (viii) Payment of Fees. The Agent shall have received for the
      benefit of Lenders the fees required pursuant to Section 8;

            (ix) Representation and Warranties. The representations and
      warranties of each Borrower and each Guarantor under this Agreement and
      the other Loan Documents shall be true and correct in all material
      respects as of such date, as if then made (except to the extent that such
      representations and warranties related solely to an earlier date);

            (x) Officer's Certificate. A certificate, signed by the Chief
      Financial Officer of the Company stating that on the Effective Date and
      after giving effect to the Related Transactions and the Advances to be
      made on such date (including advances under the Original Range Credit
      Agreement on such date), (i) no Default or Event of Default has occurred
      and is continuing (ii) the Obligations constitute "Senior Debt" (as such
      term is defined in the Indenture) permitted to be incurred under the terms
      of the Indenture and accompanied by reasonable detailed calculations
      demonstrating compliance with the foregoing clause (ii) and (iii) that
      effective upon the closing of the GLEP Acquisition, GLEP will be released
      from not less than one-half (1/2) of the Commodity Hedge Transactions of
      GLEP in effect immediately prior to the Effective Date on terms and
      conditions reasonably satisfactory to the Agent if the Company has elected
      to make the Optional Hedging Payment.

            (xi) No Event of Default. No Default or Event of Default shall have
      occurred and be continuing;

            (xii) Other Documents. Agent shall have received such other
      instruments and documents incidental and appropriate to the transaction
      provided for herein as Agent or its counsel may reasonably request, and
      all such documents shall be in form and substance reasonably satisfactory
      to the Agent;

            (xiii) Legal Matters Satisfactory. All legal matters incident to the
      consummation of the transactions contemplated hereby shall be reasonably
      satisfactory to special counsel for Agent retained at the expense of
      Borrowers;

            (xiv) GLEP Acquisition. (1) The GLEP Acquisition shall have been or
      simultaneously with the initial Advance will be, consummated substantially
      in accordance with the terms and provisions of the GLEP Acquisition
      Agreement, without the waiver of any condition thereto if the effect
      thereof would have a Material Adverse Effect on the Company and its
      Subsidiaries as a whole; (2) the

Second Amended and Restated Credit Agreement - Page 40

<PAGE>

      Acquired Interests Transfer shall have been, or simultaneously with the
      initial Advance will be, consummated on terms acceptable to the Agent; (3)
      Agent shall have received true and complete executed or conformed copies
      of the GLEP Acquisition Agreement and any amendments and modifications
      thereto; (4) Agent shall have received true and complete executed copies
      of the documents and agreements evidencing the Acquired Interests
      Transfer; (5) the GLEP Acquisition Agreement shall be in full force and
      effect and no material term or condition thereof shall have been amended,
      modified or waived after the execution thereof except with the prior
      written consent of Agent; (6) Agent shall have received a certificate from
      the Company's chief financial officer and such other evidence satisfactory
      to it that each of the conditions set forth in clauses (1) through (5)
      above have been satisfied;

            (xv) Security Instruments. In order to create in favor of Agent, for
      the benefit of Lenders, a valid and, subject to any filing and/or
      recording referred to herein, perfected Lien (subject only to Permitted
      Liens) in the Oil and Gas Properties and the other assets, interests and
      properties of Borrowers and the Guarantors pursuant to Section 6, Agent
      shall have received from each Borrower and each applicable Guarantor:

                  (1) fully executed and notarized Mortgages, in proper form for
            recording in all appropriate places in all applicable jurisdictions,
            encumbering such Oil and Gas Properties;

                  (2) an opinion of counsel (which counsel shall be reasonably
            satisfactory to Agent) in each state in which such Oil and Gas
            Properties are located with respect to the enforceability of the
            form(s) of Mortgages to be recorded in such state and such other
            matters as Agent may reasonably request, in each case in form and
            substance reasonably satisfactory to Agent;

                  (3) fully executed pledge agreements covering all of the
            issued and outstanding Capital Stock of GLEP and each Guarantor of
            the Company in form and substance satisfactory to the Agent from
            each owner and holder of such Capital Stock; and

                  (4) evidence satisfactory to the Agent of the compliance by
            the Company and each Guarantor of their obligations under the pledge
            agreements and the other Security Instruments required under Section
            6 (including, without limitation, their obligations to execute and
            deliver UCC financing statements, originals of securities or
            instruments as provided therein).

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<PAGE>

                  (5) evidence satisfactory to the Agent of the compliance by
            the Borrowers with the requirements under Section 12(v) with respect
            to the title of the Borrowers and the Guarantors to the mortgaged
            Oil and Gas Properties.

      (b) The obligation of the Lenders to make any Advance under the Commitment
(other than the initial Advance) shall be subject to the following additional
conditions precedent that, at the date of making each such Advance and after
giving effect thereto:

            (i) Representations and Warranties. The representations and
      warranties of each Borrower and each Guarantor under this Agreement and
      the other Loan Documents are true and correct in all material respects as
      of such date, as if then made (except to the extent that such
      representations and warranties related solely to an earlier date); and

            (ii) No Event of Default. No Default or Event of Default shall have
      occurred and be continuing;

            (iii) Legal Matters Satisfactory. All legal matters incident to the
      consummation of the transactions contemplated hereby shall be reasonably
      satisfactory to special counsel for Agent retained at the expense of
      Borrowers.

Each Borrowing Notice shall constitute a representation and warranty by
Borrowers that the conditions contained in Sections 11(b)(i) and (ii) have been
satisfied.

      (c) Notwithstanding anything to the contrary herein, the consummation of
the GLEP Acquisition and the Acquired Interests Transfer shall be deemed to have
occurred simultaneously with the making of the initial Advance.

      12. AFFIRMATIVE COVENANTS. A deviation from the provisions of this Section
12 shall not constitute a Default or an Event of Default under this Agreement if
such deviation is expressly consented to in writing by Required Lenders (or to
the extent expressly required in this Section 12, Super Majority Lenders) prior
to the date of deviation. Each Borrower will at all times comply, and will cause
each Guarantor to comply, with the covenants contained in this Section 12 from
the date hereof and for so long as the Commitments are in existence or any
amount is owed to the Agent or the Lenders under this Agreement or the other
Loan Documents.

            (a) Financial Statements and Reports. The Company shall promptly
      furnish to the Agent from time to time upon request such information
      regarding the business and affairs and financial condition of each
      Borrower and each Guarantor, as the Agent may reasonably request, and will
      furnish to the Agent:

                  (i) Annual Audited Financial Statements. As soon as available,
            and in any event within ninety (90) days after the close of each

Second Amended and Restated Credit Agreement - Page 42

<PAGE>

            fiscal year, the annual audited consolidated and unaudited
            consolidating Financial Statements of the Company, prepared in
            accordance with GAAP accompanied by an unqualified opinion on such
            consolidated statements rendered by an independent accounting firm
            reasonably acceptable to the Agent;

                  (ii) Quarterly Financial Statements. As soon as available, and
            in any event within forty-five (45) days after the end of each
            fiscal quarter of each year, the quarterly unaudited, (i)
            consolidated and consolidating Financial Statements of each Borrower
            and each Guarantor, and (ii) the unconsolidated quarterly Financial
            Statements of the Company, all such Financial Statements to be
            prepared in accordance with GAAP;

                  (iii) Report on Properties. As soon as available and in any
            event on or before March 1 and September 1 of each calendar year,
            and at such other times as any Lender, in accordance with Section 7,
            may request, the engineering reports required to be furnished to the
            Agent under such Section 7 on the Oil and Gas Properties;

                  (iv) Additional Information. Promptly upon request of the
            Agent from time to time any additional financial information or
            other information that the Agent may reasonably request.

      All such reports, information, balance sheets and Financial Statements
      referred to in Subsection 12(a) above shall be in such detail as the Agent
      may reasonably request and shall be prepared in a manner consistent with
      the Financial Statements.

            (b) Certificates of Compliance. Concurrently with the furnishing of
      the annual audited Financial Statements pursuant to Section 12(a)(i) and
      the quarterly unaudited Financial Statements pursuant to Section 12(a)(ii)
      for the months coinciding with the end of each calendar quarter, the
      Company will furnish or cause to be furnished to the Agent a certificate
      in the form of Exhibit "D" attached hereto, signed by the President or
      Chief Financial Officer of the Company, (i) stating that each Borrower and
      each Guarantor have fulfilled in all material respects their respective
      obligations under the Notes and the Loan Documents, including this
      Agreement, and that all representations and warranties made herein and
      therein continue (except to the extent they relate solely to an earlier
      date) to be true and correct in all material respects (or specifying the
      nature of any change), or if a Default has occurred, specifying the
      Default and the nature and status thereof; (ii) to the extent requested
      from time to time by the Agent, specifically affirming compliance of each
      Borrower and each Guarantor in all material respects with any of its
      representations (except to the extent they relate solely to an earlier
      date) or obligations under said instruments; (iii) setting forth the
      computation, in reasonable detail as of the end of each period covered by
      such certificate, of compliance with Sections 13(b) and

Second Amended and Restated Credit Agreement - Page 43

<PAGE>

      (c); and (iv) containing or accompanied by such financial or other
      details, information and material as the Agent may reasonably request to
      evidence such compliance.

            (c) Accountants' Certificate. Concurrently with the furnishing of
      the annual audited Financial Statement pursuant to Section 12(a)(i), the
      Company will furnish a statement from the firm of independent public
      accountants which audited such Financial Statement to the effect that
      nothing has come to their attention to cause them to believe that there
      existed on the date of such statements any Event of Default.

            (d) Taxes and Other Liens. Each Borrower will pay, and will cause
      each Guarantor to pay, and discharge promptly all taxes, assessments and
      governmental charges or levies imposed upon such Borrower or such
      Guarantor, or upon the income or any assets or property of Borrower or any
      Guarantor, as well as all claims of any kind (including claims for labor,
      materials, supplies and rent) which, if unpaid, might become a Lien or
      other encumbrance upon any or all of the assets or property of any
      Borrower or any Guarantor and which could reasonably be expected to result
      in a Material Adverse Effect; provided, however, that neither Borrowers
      nor any Guarantor shall be required to pay any such tax, assessment,
      charge, levy or claim if the amount, applicability or validity thereof
      shall currently be contested in good faith by appropriate proceedings
      diligently conducted, levy and execution thereon have been stayed and
      continue to be stayed and if Borrower or such Guarantor shall have set up
      adequate reserves therefor, if required, under GAAP.

            (e) Compliance with Laws. Each Borrower will observe and comply, and
      will cause each Guarantor to observe and comply, in all material respects,
      with all applicable laws, statutes, codes, acts, ordinances, orders,
      judgments, decrees, injunctions, rules, regulations, orders and
      restrictions relating to environmental standards or controls or to energy
      regulations of all federal, state, county, municipal and other
      governments, departments, commissions, boards, agencies, courts,
      authorities, officials and officers, domestic or foreign.

            (f) Further Assurances. Each Borrower will cure promptly any defects
      in the creation and issuance of the Notes and the execution and delivery
      of the Notes and the Loan Documents, including this Agreement. Each
      Borrower at its sole expense will, and will cause each Guarantor to,
      promptly execute and deliver to Agent upon its reasonable request all such
      other and further documents, agreements and instruments in compliance with
      or accomplishment of the covenants and agreements in this Agreement, or to
      correct any omissions in the Notes or more fully to state the obligations
      set out herein.

            (g) Performance of Obligations. Each Borrower will pay the Notes and
      other obligations incurred by it hereunder according to the reading, tenor
      and effect thereof and hereof; and each Borrower will do and perform, and
      will cause each Guarantor to do and perform, every act and discharge all
      of the obligations provided to be performed and

Second Amended and Restated Credit Agreement - Page 44

<PAGE>

      discharged by any Borrower or any Guarantor under the Loan Documents,
      including this Agreement, at the time or times and in the manner
      specified.

            (h) Insurance. Each Borrower now maintains and will continue to
      maintain, and will cause each Guarantor to maintain, insurance with
      financially sound and reputable insurers with respect to its assets
      against such liabilities, fires, casualties, risks and contingencies and
      in such types and amounts as is customary in the case of persons engaged
      in the same or similar businesses and similarly situated. Upon request of
      the Agent, Borrowers will furnish or cause to be furnished to the Agent
      from time to time a summary of the respective insurance coverage of each
      Borrower and each Guarantor in form and substance reasonably satisfactory
      to the Agent, and, if requested, will furnish the Agent copies of the
      applicable policies. Upon demand by Agent any insurance policies covering
      any such property shall be endorsed (i) to provide that such policies may
      not be canceled, reduced or affected in any manner for any reason without
      fifteen (15) days prior notice to Agent, (ii) to provide for insurance
      against fire, casualty and other hazards normally insured against, in the
      amount of the full value (less a reasonable deductible not to exceed
      amounts customary in the industry for similarly situated business and
      properties) of the property insured, and (iii) to provide for such other
      matters as the Agent may reasonably require. Each Borrower shall, and
      shall cause each Guarantor to, at all times maintain adequate insurance
      with respect to all of its other assets and wells in accordance with
      prudent business practices.

            (i) Accounts and Records. Each Borrower will, and will cause each
      Guarantor to, keep proper books, records and accounts in which full, true
      and correct entries will be made of all dealings or transactions in
      relation to its business and activities, prepared in a manner consistent
      with prior years, subject to changes suggested by such Borrower's or such
      Guarantor's auditors.

            (j) Right of Inspection. Each Borrower will permit, and will cause
      each Guarantor to permit, any officer, employee or agent of the Lenders to
      examine each Borrower's and each Guarantor's books, records and accounts,
      and take copies and extracts therefrom, all at such reasonable times
      during normal business hours and as often as the Lenders may reasonably
      request. The Lenders will use best efforts to keep all Confidential
      Information (as herein defined) confidential and will not disclose or
      reveal the Confidential Information or any part thereof other than (i) as
      required by law, and (ii) to the Lenders', and the Lenders' subsidiaries',
      Affiliates, officers, employees, legal counsel and regulatory authorities
      or advisors to whom it is necessary to reveal such information for the
      purpose of effectuating the agreements and undertakings specified herein
      or as otherwise required in connection with the enforcement of the
      Lenders' and the Agent's rights and remedies under the Notes, this
      Agreement and the other Loan Documents. As used herein, "Confidential
      Information" means information about any Borrower or any Guarantor
      furnished by any Borrower or any Guarantor to the Lenders, but does not
      include information (i) which was publicly known, or otherwise known to

Second Amended and Restated Credit Agreement - Page 45

<PAGE>

      the Lenders, at the time of the disclosure, (ii) which subsequently
      becomes publicly known through no act or omission by the Lenders, or (iii)
      which otherwise becomes known to the Lenders, other than through
      disclosure by a Borrower or a Guarantor.

            (k) Notice of Certain Events. Each Borrower shall promptly notify
      the Agent if such Borrower learns of the occurrence of (i) any event which
      constitutes a Default or Event of Default together with a detailed
      statement by such Borrower of the steps being taken to cure such Default
      or Event of Default; (ii) any legal, judicial or regulatory proceedings
      affecting any Borrower or any of the assets or properties of any Borrower
      or any Guarantor which, if adversely determined, could reasonably be
      expected to have a Material Adverse Effect; (iii) any dispute between any
      Borrower or any Guarantor and any governmental or regulatory body or any
      other Person or entity which, if adversely determined, would reasonably be
      expected to cause a Material Adverse Effect; (iv) any other matter which
      in any Borrower's reasonable opinion could have a Material Adverse Effect.

            (l) ERISA Information and Compliance. Each Borrower will, and will
      cause each Guarantor to, promptly furnish to the Agent upon becoming aware
      of the occurrence of any "reportable event", as such term is defined in
      Section 4043 of ERISA, or of any "prohibited transaction", as such term is
      defined in Section 4975 of the Internal Revenue Code of 1954, as amended,
      in connection with any Plan or any trust created thereunder, a written
      notice signed by the chief financial officer of any Borrower or any
      Guarantor specifying the nature thereof, what action such party is taking
      or proposes to take with respect thereto, and, when known, any action
      taken by the Internal Revenue Service with respect thereto.

            (m) Environmental Reports and Notices. Each Borrower will, and will
      cause each Guarantor to, deliver to the Agent (i) promptly upon its
      becoming available, one copy of each report (other than routine
      informational filings) sent by any Borrower or any Guarantor to any court,
      governmental agency or instrumentality pursuant to any Environmental Law,
      (ii) notice, in writing, promptly upon any Borrower's or any Guarantor's
      receipt of notice or otherwise learning of any claim, demand, action,
      event, condition, report or investigation indicating any potential or
      actual liability arising in connection with (x) the non-compliance with or
      violation of the requirements of any Environmental Law which reasonably
      could be expected to have a Material Adverse Effect; (y) the release or
      threatened release of any hazardous substance, toxic or hazardous waste
      into the environment which reasonably could be expected to have a Material
      Adverse Effect or which release any Borrower or any Guarantor would have a
      duty to report to any court or government agency or instrumentality, or
      (iii) the existence of any Environmental Lien on any properties or assets
      of any Borrower or any Guarantor and such Borrower or such Guarantor shall
      promptly deliver a copy of any such notice to Agent.

Second Amended and Restated Credit Agreement - Page 46

<PAGE>

            (n) Compliance and Maintenance. Each Borrower will, and will cause
      each Guarantor to, (i) observe and comply in all material respects with
      all Environmental Laws; (ii) except as provided in Subsections 12(o) and
      12(p) below, maintain the Oil and Gas Properties and other assets and
      properties in good and workable condition at all times and make all
      repairs, replacements, additions, betterments and improvements to the Oil
      and Gas Properties and other assets and properties as are needed and
      proper so that the business carried on in connection therewith may be
      conducted properly and efficiently at all times in the opinion of any
      Borrower, or any Guarantor, exercised in good faith; (iii) take or cause
      to be taken whatever actions are necessary or desirable to prevent an
      event or condition of default by any Borrower or any Guarantor under the
      provisions of any gas purchase or sales contract or any other contract,
      agreement or lease comprising a part of the Oil and Gas Properties or
      other collateral security hereunder which default could reasonably be
      expected to result in a Material Adverse Effect; and (iv) furnish Agent
      upon request evidence reasonably satisfactory to Agent that there are no
      Liens, claims or encumbrances on the Oil and Gas Properties, except
      Permitted Liens.

            (o) Operation of Properties. Except as provided in Subsections 12(p)
      and (q) below, each Borrower will, and will cause each Guarantor to,
      operate, or use reasonable efforts to cause to be operated, all Oil and
      Gas Properties in a careful and efficient manner in accordance with the
      practice of the industry and in compliance in all material respects with
      all applicable laws, rules, and regulations, and in compliance in all
      material respects with all applicable proration and conservation laws of
      the jurisdiction in which the properties are situated, and all applicable
      laws, rules, and regulations, of every other agency and authority from
      time to time constituted to regulate the development and operation of the
      properties and the production and sale of hydrocarbons and other minerals
      therefrom; provided, however, that any such Borrower or any such Guarantor
      shall have the right to contest in good faith by appropriate proceedings,
      the applicability or lawfulness of any such law, rule or regulation and
      pending such contest may defer compliance therewith, as long as such
      deferment shall not subject the properties or any part thereof to
      foreclosure or loss.

            (p) Compliance with Leases and Other Instruments. Each Borrower
      will, and will cause each Guarantor to, pay or cause to be paid and
      discharge all rentals, delay rentals, royalties, production payment, and
      indebtedness required to be paid by such party (or required to keep
      unimpaired in all material respects the rights of such party in Oil and
      Gas Properties) accruing under, and perform or cause to be performed in
      all material respects each and every act, matter, or thing required of
      such party by each and all of the assignments, deeds, leases, subleases,
      contracts, and agreements in any way relating to such party or any of the
      Oil and Gas Properties and do all other things necessary of such party to
      keep unimpaired in all material respects the rights of such party
      thereunder and to prevent the forfeiture thereof or default thereunder;
      provided, however, that nothing in this Agreement shall be deemed to
      require any Borrower or any Guarantor to perpetuate or renew any oil and
      gas lease or other lease by payment of rental or delay rental or by

Second Amended and Restated Credit Agreement - Page 47

<PAGE>

      commencement or continuation of operations nor to prevent any Borrower or
      any Guarantor from abandoning or releasing any oil and gas lease or other
      lease or well thereon when, in any of such events, in the opinion of the
      affected Borrower or Guarantor exercised in good faith, it is not in the
      best interest of such Borrower or such Guarantor to perpetuate the same.

            (q) Certain Additional Assurances Regarding Maintenance and
      Operations of Properties. With respect to those Oil and Gas Properties
      which are being operated by operators other than a Borrower or a
      Guarantor, neither Borrowers nor any Guarantor shall be obligated to
      perform any undertakings contemplated by the covenants and agreement
      contained in Sections 12(o) or 12(p) which are performable only by such
      operators and are beyond the control of such Borrower or such Guarantor;
      however, each Borrower agrees to promptly take, or cause to be taken, all
      reasonable actions available under any operating agreements or otherwise
      to bring about the performance of any such material undertakings required
      to be performed thereunder.

            (r) Sale of Certain Assets/Prepayment of Proceeds. Each Borrower
      will immediately pay over to the Agent for the ratable benefit of the
      Lenders as a prepayment of principal on the Notes and a reduction of the
      Commitments, an amount equal to 100% of the "Release Price" from the sale
      of Oil and Gas Properties by any Borrower or any Guarantor in excess of
      $25,000,000 in the aggregate received from such sales between Borrowing
      Base redeterminations, which sale has been either (i) made in compliance
      with the provisions of Section 13(a)(ii), or (ii) approved in advance by
      Super Majority Lenders. Provided, however, that in lieu of making any such
      payment Borrowers may elect to provide, or cause to be provided by a
      Guarantor, additional Oil and Gas Properties with value and quality
      satisfactory to all Lenders in their discretion in substitution for the
      Oil and Gas Properties sold pursuant to the provisions of this Section
      12(r). The term "Release Price" means the price determined by the Super
      Majority Lenders in their discretion based on the loan value of the Oil
      and Gas Properties being sold by a Borrower or a Guarantor that the Super
      Majority Lenders in their discretion (using such methodology, assumptions
      and discount rates as such Lenders customarily use in assigning loan value
      to oil and gas properties) assigned to such Oil and Gas Properties as of
      the date of such determination by the Lenders. Any such prepayment of
      principal on the Notes required by this Section 12(r), shall not be in
      lieu of, but shall be in addition to, any mandatory prepayment of
      principal required to be paid pursuant to Section 9(b).

            (s) Title Matters. Within sixty (60) days after the Effective Date
      with respect to the Oil and Gas Properties listed on Schedule "7" hereto,
      each Borrower shall, or shall cause a Guarantor to, furnish Agent with
      title information reasonably satisfactory to Agent showing good and
      defensible title of such Borrower or such Guarantor to such Oil and Gas
      Properties subject only to the Permitted Liens. As to any Oil and Gas
      Properties hereafter mortgaged to Agent, Borrowers will promptly (but in
      no event more than sixty

Second Amended and Restated Credit Agreement - Page 48

<PAGE>

      (60) days following such mortgaging), furnish, or cause to be furnished,
      if requested, Agent with title information reasonably satisfactory to
      Agent showing good and defensible title of such Borrower or such Guarantor
      to such Oil and Gas Properties subject only to Permitted Liens.

            (t) Curative Matters. Within sixty (60) days after the Effective
      Date with respect to matters listed on Schedule "8" and, thereafter,
      within sixty (60) days after receipt by Borrowers from Agent or its
      counsel of written notice of title defects the Agent reasonably requires
      to be cured, each Borrower shall, or shall cause a Guarantor to, either
      (i) provide such curative information, in form and substance satisfactory
      to Agent, or (ii) substitute Oil and Gas Properties of value and quality
      satisfactory to the Agent for all of Oil and Gas Properties for which such
      title curative was requested but upon which a Borrower or a Guarantor
      elected not to provide such title curative information, and, within sixty
      (60) days of such substitution, provide title information satisfactory to
      the Agent covering the Oil and Gas Properties so substituted. If Borrowers
      fail to satisfy (i) or (ii) above within the time specified, the loan
      collateral value assigned by the Lenders to the Oil and Gas Properties for
      which such curative information was requested shall be deducted from the
      Borrowing Base resulting in a reduction thereof.

            (u) Change of Principal Place of Business. Each Borrower shall, and
      shall cause each Guarantor to, give Agent at least thirty (30) days prior
      written notice of its intention to move its principal place of business
      from the address set forth in Section 17.

            (v) Additional Collateral. Borrowers agree to regularly monitor
      engineering data covering all producing oil and gas properties and
      interests owned or acquired by Borrowers and the Guarantors on or after
      the date hereof and to mortgage or cause to be mortgaged such of the same
      to Agent for the ratable benefit of the Lenders in substantially the form
      of the Security Instruments, as applicable, to the extent that the Lenders
      shall at all times during the existence of the Commitment be secured by
      perfected Liens and security interests covering not less than eighty
      percent (80%) of the Engineered Value of all producing Oil and Gas
      Properties of Borrowers and the Guarantors, taken as a whole. In addition,
      Borrowers agree that in connection with the mortgaging of such additional
      Oil and Gas Properties, they shall within a reasonable time thereafter,
      deliver or cause to be delivered to the Agent such mortgage and title
      opinions and other title information with respect to the title and Lien
      status of such Oil and Gas Properties as may be necessary to maintain at
      all times a level of such title information (showing good and defensible
      title) of not less than (i) eighty percent (80%) of the Engineered Value
      of all Oil and Gas Properties mortgaged to the Agent for the ratable
      benefit of the Lenders by the Company and the Guarantors, taken as a
      whole, and (ii) thirty percent (30%) of the Engineered Value of all Oil
      and Gas Properties mortgaged to the Agent for the ratable benefit of the
      Lenders by GLEP. In order to assist Borrowers in monitoring its mortgage
      coverage, Agent agrees to notify Borrowers if the Lenders determine that
      the coverage required by this paragraph ever falls below 80%. Failure of

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<PAGE>

      the Agent to notify Borrowers of any such deficiency shall in no way
      affect Borrowers' obligations under this Section 12(v) to monitor and
      pledge, or cause to be pledged, additional Oil and Gas Properties from
      time to time. Upon receipt of any such notice from the Agent, Borrowers
      shall, within thirty (30) days of receipt of such notice, execute and
      deliver, or cause to be executed and delivered, Security Instruments in
      form and substance satisfactory to the Agent covering sufficient
      additional Oil and Gas Properties to bring the coverage to at least 80%.

      13. NEGATIVE COVENANTS. A deviation from the provisions of this Section 13
shall not constitute an Event of Default under this Agreement if such deviation
is consented to in writing by Required Lenders (or to the extent expressly
required in this Section 13, Super Majority Lenders) prior to the date of
deviation. Each Borrower will at all times comply with the covenants contained
in this Section 13 from the date hereof and for so long as the Commitment is in
existence or any amount is owed to the Agent or the Lenders under this Agreement
or the other Loan Documents.

            (a) Liens and Asset Sales. Borrowers shall not, nor shall they
      permit any Guarantor to:

                  (i) create, incur, assume or permit to exist any Lien,
            security interest or other encumbrance on any of its assets or
            properties except Permitted Liens; or

                  (ii) sell, lease, transfer or otherwise dispose of, in any
            fiscal year, any of its assets including any Capital Stock owned by
            it except for (A) sales, leases, transfers or other dispositions
            made in the ordinary course of such Borrower's or such Guarantor's
            oil and gas businesses, (B) sales, leases, transfers or other
            dispositions of Oil and Gas Properties which do not exceed
            $25,000,000 in the aggregate between Borrowing Base
            redeterminations; (C) transfers or other dispositions of Oil and Gas
            Properties to Marbel upon the exercise of its Deep Participation
            Rights and (C) other sales, leases, transfers or other dispositions
            made with the consent of Super Majority Lenders.

            (b) Current Ratio. The Company shall not allow its Current Ratio to
      be less than 1.0 to 1.0 as of the last day of any fiscal quarter beginning
      with the fiscal quarter ending June 30, 2004.

            (c) Funded Debt Leverage Ratio. The Company will not allow its ratio
      of Funded Debt to EBITDA to be greater than 4.0 to 1.0 as of the last day
      of any fiscal quarter beginning with the fiscal quarter ending June 30,
      2004.

            (d) Consolidations and Mergers. Borrowers shall not, nor shall they
      permit any Guarantor to, consolidate or merge with or into any other
      Person, except that any

Second Amended and Restated Credit Agreement - Page 50

<PAGE>

      Borrower or any Guarantor may merge with another Person if such Borrower
      (or the Company if the Company is a party to such merger) or such
      Guarantor is the surviving entity in such merger or if, after giving
      effect thereto, no Default or Event of Default shall have occurred and be
      continuing.

            (e) Debts, Guaranties and Other Obligations. Borrowers shall not,
      nor shall they permit their Subsidiaries to, incur, create, assume or in
      any manner become or be liable in respect of any indebtedness, and
      Borrowers shall not, nor shall they permit their Subsidiaries to,
      guarantee or otherwise in any manner become or be liable in respect of any
      Debt, except that the foregoing restrictions shall not apply to:

                  (i) the Notes and Letters of Credit, and any renewal,
            extension, reissuance, increase or other modification thereof; or

                  (ii) taxes, assessments or other government charges which are
            not yet due or are being contested in good faith by appropriate
            action promptly initiated and diligently conducted, if such reserve
            as shall be required by GAAP shall have been made therefor and levy
            and execution thereon have been stayed and continue to be stayed; or

                  (iii) Debt of any Borrower to any other Borrower, or of any
            Guarantor to any Borrower or any other Guarantor; provided, that if
            the Company is the obligor on any such Debt such Debt is expressly
            subordinate to the payment in full of the Obligations; or

                  (iv) obligations under Rate Management Transactions permitted
            pursuant to Section 13(k); or

                  (v) Debt under Capital Leases not to exceed $10,000,000 in the
            aggregate at any time outstanding; or

                  (vi) the Convertible Subordinated Debentures; provided, that
            the aggregate principal amount of such Debt does not exceed
            $9,000,000 at any time; or

                  (vii) the Senior Subordinated Notes; provided, that the
            aggregate principal amount of such Debt does not exceed $200,000,000
            at any time; or

                  (viii) other Debt of any nature not otherwise permitted under
            the foregoing clauses (i) through (vii) that does not, in the
            aggregate, exceed $10,000,000 in outstanding principal amount at any
            time; or

Second Amended and Restated Credit Agreement - Page 51

<PAGE>

                  (ix) Contingent Obligations incurred in the ordinary course of
            business (1) as a non-operator under oil and gas operating
            agreements, (2) under standard and customary provisions of gas sale
            contracts for make-up volumes on sales of natural gas and natural
            gas liquids from gas processing plants, and (3) under Advance
            Payment Contracts to the extent permitted under Section 13(o); or

                  (x) any renewals or extensions of (but, other than in the case
            of the Notes, not increases in) any of the foregoing.

            (f) Restricted Payments. Borrowers shall not, nor shall they permit
      any of their Subsidiaries to, declare or pay any cash dividend, or
      distribution (whether in cash, securities or other property) purchase,
      redeem or otherwise acquire for value any of its Capital Stock now or
      hereafter outstanding, return any capital to its stockholders or make any
      distribution of its assets to its stockholders or purchase, redeem,
      defease, prepay or otherwise acquire for value any Junior Securities now
      or hereafter outstanding, except that the foregoing shall not apply to:

                  (i) subject to the inclusion of any dividend or interest
            payment permitted by this Subsection 13(f)(i) in the basket provided
            in subsection (ii) below, Cash Dividends on the Convertible
            Preferred Stock if, and only if, immediately before and after giving
            effect to such payment of dividends or interest no Default or Event
            of Default shall exist;

                  (ii) total distributions, Common Stock Cash Dividends,
            purchases and payments (including purchases or redemptions of Junior
            Securities) in aggregate amounts of up to $20,000,000 plus (a) 50%
            of cumulative Net Income after December 31, 2001 (which Net Income
            shall exclude any non-cash gains or losses associated with the
            application of FASB 121 or 133) plus (b) 66-2/3% of net cash
            proceeds from the issuance of the Company's common stock at any time
            after December 31, 2001; provided, however, that immediately before
            and after giving effect to any such distribution, dividend, purchase
            or payment no Default or Event of Default shall exist;

                  (iii) dividends or distributions payable by the Company in
            Capital Stock of the Company or warrants, options or other rights to
            acquire Capital Stock of the Company but excluding any debt security
            which is convertible into, or exchangeable or exercisable for shares
            of capital stock of any Borrower or Disqualified Stock of any
            Borrower; or

                  (iv) dividends and distributions by any Subsidiary of any
            Borrower to its direct parent.

Second Amended and Restated Credit Agreement - Page 52

<PAGE>

            (g) Loans, Advances and Investments. Borrowers shall not make or
      permit to remain outstanding, nor shall they permit any Guarantor to make
      or permit to remain outstanding, any loans or advances to, or investments
      in, any Person or entity, except that the foregoing restriction shall not
      apply to:

                  (i) loans or advances to any Person, the material details of
            which have been set forth in the Financial Statements of the Company
            furnished to Lenders prior to the Effective Date; or

                  (ii) loans or advances to a Guarantor; or

                  (iii) other loans, advances or investments up to $5,000,000 in
            the aggregate;

                  (iv) loans or advances by the Company to REFC, provided that
            the aggregate outstanding principal balance of all such loans and
            advances does not exceed at any time $10,000,000.

            (h) Receivables and Payables. Borrowers shall not, nor shall they
      permit any Guarantor to, discount or sell with recourse, or sell for less
      than the market value thereof, any of its notes receivable or accounts
      receivable.

            (i) Nature of Business. Borrowers shall not, nor shall they permit
      any Guarantor to, permit any material change to be made in the character
      of its businesses as carried on at the date hereof.

            (j) Transactions with Affiliates. Borrowers shall not, nor shall
      they permit any Guarantor to, enter into any transaction with any
      Affiliate, except transactions upon terms that are no less favorable to it
      than would be obtained in a transaction negotiated at arm's length with an
      unrelated third party.

            (k) Rate Management Transactions. Borrowers shall not, nor shall
      they permit any Guarantor to, enter into any Rate Management Transactions,
      except the foregoing prohibitions shall not apply to (x) transactions
      consented to in writing by the Required Lenders which are on terms
      acceptable to the Required Lenders, or (y) Pre-Approved Contracts. Once
      any Borrower or any Guarantor enters into a Rate Management Transaction,
      the terms and conditions of such Rate Management Transaction may not be
      materially amended or modified, nor may such Rate Management Transaction
      be cancelled without the applicable Borrower or Guarantor having given the
      Agent written notice of such amendment, modification or cancellation on
      the date not later than three (3) Business Days after the date such action
      takes place. Borrowers further agree to give the Agent written notice of
      any bankruptcy, insolvency or similar proceeding commenced by or against
      any counterparty to any agreement entered into any such Rate Management
      Transaction.

Second Amended and Restated Credit Agreement - Page 53

<PAGE>

            (l) Amendment to Articles of Incorporation or Bylaws. Borrowers
      shall not, nor shall they permit any Guarantor to, permit any material
      amendment to, or any alteration of, its Organizational Documents.

            (m) Issuance of Preferred Stock. Except for the Convertible
      Preferred Stock or as otherwise permitted with the prior written consent
      of the Required Lenders, the Company shall not issue any Disqualified
      Stock after the Effective Date.

            (n) Payment or Prepayment of Other Debt. Except for purchase or
      redemptions of Junior Securities and payments permitted pursuant to
      Section 13(f), Borrowers shall not make any interest or principal payment,
      redeem any Debt (other than Debt owed the Lenders hereunder), or redeem
      any Capital Stock of the Company if immediately before and after giving
      effect to any payment, purchase or redemption a Default or Event of
      Default shall exist or shall result from such payment, purchase or
      redemption.

            (o) Sale and Leaseback Transactions and other Off-Balance Sheet
      Liabilities. No Borrower will, nor will any Borrower permit any Guarantor
      to, enter into or suffer to exist any Sale and Leaseback Transaction or
      any other transaction pursuant to which it incurs or has incurred
      Off-Balance Sheet Liabilities, except that the foregoing restrictions
      shall not apply to:

            (i) Rate Management Transactions permitted under the terms of
      Section 13(k);

            (ii) With respect to Advance Payments received from various
      customers in connection with any Borrowers' or any Guarantors' credit
      management of such customers; provided that the aggregate amount of all
      such Advance Payments received by the Borrowers and Guarantors, taken as a
      whole that have not been satisfied by delivery of production at any time
      does not exceed, in the aggregate, $10,000,000; and

            (iii) Advance Payment Contracts not otherwise permitted under clause
      (ii) above; provided, that the aggregate amount of all Advance Payments
      received by the Borrowers and Guarantors, taken as a whole that have not
      been satisfied by delivery of production at any time does not exceed, in
      the aggregate, $5,000,000.

      (p) Modifications to the Junior Securities. Until all of the Obligations
under the Notes, this Agreement, the other Loan Documents and the Rate
Management Transactions have been paid in full in cash and all Commitments have
terminated, neither the Company nor any of its Subsidiaries will, without the
prior written consent of Agent and the Required Lenders, agree to any amendment,
modification or supplement to any of the Junior Securities or any indenture,
agreement, document or instrument evidencing or

Second Amended and Restated Credit Agreement - Page 54

<PAGE>

relating to the Junior Securities the effect of which is to (a) increase the
maximum principal amount of the Junior Securities or the rate of interest on any
of the Junior Securities (other than as a result of the imposition of a default
rate of interest in accordance with the terms of the Junior Securities), (b)
change or add any event of default or any covenant with respect to the Junior
Securities if the effect of such change or addition is to cause any one or more
of the Junior Securities to be more restrictive on the Company or any of its
Subsidiaries than such Junior Securities were prior to such change or addition,
(c) change the dates upon which payments of principal or interest on the Junior
Securities are due, if the effect of such change is to cause any such payments
to be due earlier or more frequently than such payments are due as of the date
hereof, (d) change any redemption or prepayment provisions of the Junior
Securities if the effect of such change is to require any such redemption or
prepayment to be made prior to the dates required as of the date hereof, (e)
alter the subordination provisions, if any, with respect to any of the Junior
Securities, or (f) grant any Liens in any assets of the Company or any of its
Subsidiaries.

      14. EVENTS OF DEFAULT. Any one or more of the following events shall be
considered an "Event of Default" as that term is used herein:

            (a) Borrowers shall fail to pay when due or declared due the
      principal of, and the interest on, the Notes or any fee or any other
      Obligations of Borrowers secured pursuant to this Agreement or any of the
      other Loan Documents other than Rate Management Obligations; or

            (b) Any representation or warranty made by Borrowers under this
      Agreement, or in any certificate or statement furnished or made to the
      Lenders pursuant hereto, or in connection herewith, or in connection with
      any document furnished hereunder, shall prove to be untrue in any material
      respect as of the date on which such representation or warranty is made
      (or deemed made), or any representation, statement (including financial
      statements), certificate, report or other data furnished or to be
      furnished or made by any Borrower or any Guarantor under any Loan
      Document, including this Agreement, proves to have been untrue in any
      material respect, as of the date as of which the facts therein set forth
      were stated or certified; or

            (c) Default shall be made in the due observance or performance of
      any of the covenants or agreements of Borrowers or any Guarantor contained
      in the Loan Documents, including this Agreement (excluding covenants
      contained in Section 13 of the Agreement for which there is no cure
      period), and such default shall continue for more than thirty (30) days
      after written notice from Agent is received by Borrowers; or

            (d) Default shall be made in the due observance or performance of
      the covenants of Borrowers contained in Section 13 of this Agreement; or

Second Amended and Restated Credit Agreement - Page 55

<PAGE>

            (e) Default shall be made in respect of any obligation for borrowed
      money other than the Notes, for which any Borrower is liable (directly, by
      assumption, as guarantor or otherwise), or any obligations secured by any
      mortgage, pledge or other consensual security interest with respect
      thereto, on any asset or property of any Borrower or in respect of any
      agreement relating to any such obligations, and if such default shall
      continue beyond the applicable grace period, if any; or

            (f) Any Borrower or any Guarantor shall commence a voluntary case or
      other proceeding seeking liquidation, reorganization or other relief with
      respect to itself or its debts under any bankruptcy, insolvency or other
      similar law now or hereafter in effect or seeking an appointment of a
      trustee, receiver, liquidator, custodian or other similar official of it
      or any substantial part of its property, or shall consent to any such
      relief or to the appointment of or taking possession by any such official
      in an involuntary case or other proceeding commenced against it, or shall
      make a general assignment for the benefit of creditors, or shall fail
      generally to pay its debts as they become due, or shall take any corporate
      action authorizing the foregoing; or

            (g) An involuntary case or other proceeding, shall be commenced
      against any Borrower or any Guarantor seeking liquidation, reorganization
      or other relief with respect to it or its debts under any bankruptcy,
      insolvency or similar law now or hereafter in effect or seeking the
      appointment of a trustee, receiver, liquidator, custodian or other similar
      official of it or any substantial part of its property, and such
      involuntary case or other proceeding shall remain undismissed and unstayed
      for a period of sixty (60) days; or an order for relief shall be entered
      against any Borrower or any Guarantor under the federal bankruptcy laws as
      now or hereinafter in effect;

            (h) A final judgment or order for the payment of money in excess of
         $1,000,000 (or judgments or orders aggregating in excess of $1,000,000)
         shall be rendered against any Borrower or any Guarantor and such
         judgments or orders shall continue unsatisfied and unstayed for a
         period of thirty (30) days; or

            (i) In the event the Total Outstandings shall at any time exceed the
      Borrowing Base established for the Notes, and Borrowers shall fail to
      comply with the provisions of Section 9(b); or

            (j) An Event of Default (as defined therein) shall occur as a result
      of action of Borrowers under any agreement entered into in connection with
      any Rate Management Transaction;

            (k) The Liens securing the Loans cease to be in place and/or
      effective; or

            (l) A Change of Control shall occur.

Second Amended and Restated Credit Agreement - Page 56

<PAGE>

      Upon occurrence of any Event of Default specified in Subsections 14(f) and
(g), the entire principal amount due under the Notes and all interest then
accrued thereon, and any other liabilities of Borrowers hereunder, shall become
automatically and immediately due and payable all without notice and without
presentment, demand, protest, notice of protest or dishonor or any other notice
of default of any kind, all of which are hereby expressly waived by Borrowers.
Upon the occurrence of any other Event of Default, the Agent, upon request of
Required Lenders, shall by written notice to Borrowers declare the principal of,
and all interest then accrued on, the Notes and any other liabilities hereunder
to be forthwith due and payable, whereupon the same shall forthwith become due
and payable without presentment, demand, protest, notice of intent to
accelerate, notice of acceleration or other notice of any kind, all of which
Borrowers hereby expressly waive, anything contained herein or in the Note to
the contrary notwithstanding.

      Upon the occurrence and during the continuance of any Event of Default,
the Lenders are hereby authorized at any time and from time to time, without
notice to Borrowers or any Guarantor (any such notice being expressly waived by
Borrowers and the Guarantors), 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 any of the Lenders to or for the credit
or the account of Borrowers or any Guarantor against any and all of the
Obligations of Borrowers under the Notes and the other Loan Documents, including
this Agreement, irrespective of whether or not the Lenders shall have made any
demand under the Loan Documents, including this Agreement or the Notes and
although any such Obligations may be unmatured. Any amount set-off by any of the
Lenders shall be applied against the Obligations owed the Lenders by Borrowers
pursuant to this Agreement, the Notes and the other Loan Documents. The Lenders
agree promptly to notify Borrowers and the affected Guarantor after any such
setoff and application, provided that the failure to give such notice shall not
affect the validity of such set-off and application. The rights of the Lender
under this Section are in addition to other rights and remedies (including,
without limitation, other rights of set-off) which the Lenders may have.

      15. THE AGENT AND THE LENDERS.

            (a) Appointment and Authorization. Each Lender hereby appoints Agent
      as its nominee and agent, in its name and on its behalf: (i) to act as
      nominee for and on behalf of such Lender in and under all Loan Documents;
      (ii) to arrange the means whereby the funds of Lenders are to be made
      available to Borrowers under the Loan Documents; (iii) to take such action
      as may be requested by any Lender under the Loan Documents (when such
      Lender is entitled to make such request under the Loan Documents); (iv) to
      receive all documents and items to be furnished to Lenders under the Loan
      Documents; (v) to be the secured party, mortgagee, beneficiary, and
      similar party in respect of, and to receive, as the case may be, any
      collateral for the benefit of Lenders; (vi) to promptly distribute to each
      Lender all material information, requests, documents and items received
      from Borrower under the Loan Documents; (vii) to promptly distribute to
      each Lender such Lender's Pro Rata Part of each payment or prepayment

Second Amended and Restated Credit Agreement - Page 58

<PAGE>

      (whether voluntary, as proceeds of insurance thereon, or otherwise) in
      accordance with the terms of the Loan Documents and (viii) to deliver to
      the appropriate Persons requests, demands, approvals and consents received
      from Lenders. Each Lender hereby authorizes Agent to take all actions and
      to exercise such powers under the Loan Documents as are specifically
      delegated to Agent by the terms hereof or thereof, together with all other
      powers reasonably incidental thereto. With respect to its Commitment
      hereunder and the Notes issued to it, Agent and any successor Agent shall
      have the same rights under the Loan Documents as any other Lender and may
      exercise the same as though it were not the Agent; and the term "Lender"
      or "Lenders" shall, unless otherwise expressly indicated, include Agent
      and any successor Agent in its capacity as a Lender. Agent and any
      successor Agent and its Affiliates may accept deposits from, lend money
      to, act as trustee under indentures of and generally engage in any kind of
      business with Borrowers, and any Person which may do business with
      Borrowers, all as if Agent and any successor Agent was not Agent hereunder
      and without any duty to account therefor to the Lenders; provided that, if
      any payments in respect of any property (or the proceeds thereof) now or
      hereafter in the possession or control of Agent which may be or become
      security for the obligations of Borrowers arising under the Loan Documents
      by reason of the general description of indebtedness secured or of
      property contained in any other agreements, documents or instruments
      related to any such other business shall be applied to reduction of the
      obligations of Borrowers arising under the Loan Documents, then each
      Lender shall be entitled to share in such application according to its pro
      rata part thereof. Each Lender, upon request of any other Lender, shall
      disclose to all other Lenders all indebtedness and liabilities, direct and
      contingent, of Borrowers to such Lender as of the time of such request.

            (b) Note Holders. From time to time as other Lenders become a party
      to this Agreement, Agent shall obtain execution by Borrowers of additional
      Notes in amounts representing the Commitments of each such new Lender, up
      to an aggregate face amount of all Notes not exceeding $600,000,000. The
      obligation of such Lender shall be governed by the provisions of this
      Agreement, including but not limited to, the obligations specified in
      Section 2. From time to time, Agent may require that the Lenders exchange
      their Notes for newly issued Notes to better reflect the Commitments of
      the Lenders. Agent may treat the payee of any Note as the holder thereof
      until written notice of transfer has been filed with it, signed by such
      payee and in form satisfactory to Agent.

            (c) Consultation with Counsel. Lenders agree that Agent may consult
      with legal counsel selected by Agent and shall not be liable for any
      action taken or suffered in good faith by it in accordance with the advice
      of such counsel. LENDERS ACKNOWLEDGE THAT GARDERE WYNNE SEWELL LLP IS
      COUNSEL FOR BANK ONE, BOTH AS AGENT AND AS A LENDER, AND THAT SUCH FIRM
      DOES NOT REPRESENT ANY OF THE OTHER LENDERS IN CONNECTION WITH THIS
      TRANSACTION.

Second Amended and Restated Credit Agreement - Page 58

<PAGE>

            (d) Documents. Agent shall not be under a duty to examine or pass
      upon the validity, effectiveness, enforceability, genuineness or value of
      any of the Loan Documents or any other instrument or document furnished
      pursuant thereto or in connection therewith, and Agent shall be entitled
      to assume that the same are valid, effective, enforceable and genuine and
      what they purport to be.

            (e) Resignation or Removal of Agent. Subject to the appointment and
      acceptance of a successor Agent as provided below, Agent may resign at any
      time by giving written notice thereof to Lenders and Borrowers, and Agent
      may be removed at any time with or without cause by Required Lenders
      (excluding the Agent). If no successor Agent has been so appointed by
      Required Lenders (and approved by Borrowers) and has accepted such
      appointment within thirty (30) days after the retiring Agent's giving of
      notice of resignation or removal of the retiring Agent, then the retiring
      Agent may, on behalf of Lenders, appoint a successor Agent. Any successor
      Agent must be approved by Borrowers, which approval will not be
      unreasonably withheld. Upon the acceptance of any appointment as Agent
      hereunder by a successor Agent, such successor Agent shall thereupon
      succeed to and become vested with all the rights and duties of the
      retiring Agent, and the retiring Agent, as the case may be, shall be
      discharged from its duties and obligations hereunder. After any retiring
      Agent's resignation or removal hereunder as Agent, the provisions of this
      Section 15 shall continue in effect for its benefit in respect to any
      actions taken or omitted to be taken by it while it was acting as Agent.
      To be eligible to be an Agent hereunder the party serving, or to serve, in
      such capacity must own a Pro Rata Part of the Commitments equal to the
      level of Commitment required to be held by any Lender pursuant to Section
      29.

            (f) Responsibility of Agent. It is expressly understood and agreed
      that the obligations of Agent under the Loan Documents are only those
      expressly set forth in the Loan Documents as to each and that Agent, shall
      be entitled to assume that no Default or Event of Default has occurred and
      is continuing, unless Agent has actual knowledge of such fact or has
      received notice from a Lender or Borrowers that such Lender or Borrowers
      consider that a Default or an Event of Default has occurred and is
      continuing and specifying the nature thereof. Neither Agent nor any of its
      directors, officers, attorneys or employees shall be liable for any action
      taken or omitted to be taken by them under or in connection with the Loan
      Documents, except for its or their own gross negligence or willful
      misconduct. Agent shall not incur liability under or in respect of any of
      the Loan Documents by acting upon any notice, consent, certificate,
      warranty or other paper or instrument believed by it to be genuine or
      authentic or to be signed by the proper party or parties, or with respect
      to anything which it may do or refrain from doing in the reasonable
      exercise of its judgment, or which may seem to it to be necessary or
      desirable. The Syndication Agents, the Documentation Agents and the
      Arranger shall have no responsibilities as an agent hereunder.

Second Amended and Restated Credit Agreement - Page 59

<PAGE>

            Agent shall not be responsible to Lenders for any of Borrowers'
      recitals, statements, representations or warranties contained in any of
      the Loan Documents, or in any certificate or other document referred to or
      provided for in, or received by any Lender under, the Loan Documents, or
      for the value, validity, effectiveness, genuineness, enforceability or
      sufficiency of or any of the Loan Documents or for any failure by
      Borrowers to perform any of their obligations hereunder or thereunder.
      Agent may employ agents and attorneys-in-fact and shall not be answerable,
      except as to money or securities received by it or its authorized agents,
      for the negligence or misconduct of any such agents or attorneys-in-fact
      selected by it with reasonable care.

            The relationship between Agent and each Lender is only that of agent
      and principal and has no fiduciary aspects. Nothing in the Loan Documents
      or elsewhere shall be construed to impose on Agent any duties or
      responsibilities other than those for which express provision is therein
      made. In performing its duties and functions hereunder, Agent does not
      assume and shall not be deemed to have assumed, and hereby expressly
      disclaims, any obligation or responsibility toward or any relationship of
      agency or trust with or for Borrowers or any of their beneficiaries or
      other creditors. As to any matters not expressly provided for by the Loan
      Documents, Agent shall not be required to exercise any discretion or take
      any action, but shall be required to act or to refrain from acting (and
      shall be fully protected in so acting or refraining from acting) upon the
      instructions of all Lenders and such instructions shall be binding upon
      all Lenders and all holders of the Notes; provided, however, that Agent
      shall not be required to take any action which is contrary to the Loan
      Documents or applicable law.

            Agent shall have the right to exercise or refrain from exercising,
      without notice or liability to the Lenders, any and all rights afforded to
      Agent by the Loan Documents or which Agent may have as a matter of law;
      provided, however, Agent shall not (i) except as provided herein and in
      Section 7(b), without the consent of Super Majority Lenders designate the
      amount of the Borrowing Base, or approve the sale, release or substitution
      of Collateral other than the sale of Collateral permitted pursuant to
      Section 13(a)(ii), or (ii) without the consent of Required Lenders, take
      any other action with regard to amending the Loan Documents, waiving any
      default under the Loan Documents, or taking any other action with respect
      to the Loan Documents. Agent shall not have liability to Lenders for
      failure or delay in exercising any right or power possessed by Agent
      pursuant to the Loan Documents or otherwise unless such failure or delay
      is caused by the gross negligence of the Agent, in which case only the
      Agent responsible for such gross negligence shall have liability therefor
      to the Lenders.

            (g) Independent Investigation. Each Lender severally represents and
      warrants to Agent that it has made its own independent investigation and
      assessment of the financial condition and affairs of Borrowers in
      connection with the making and continuation of its participation hereunder
      and has not relied exclusively on any information provided to such Lender
      by Agent in connection herewith, and each Lender

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<PAGE>

      represents, warrants and undertakes to Agent that it shall continue to
      make its own independent appraisal of the credit worthiness of Borrowers
      while the Notes are outstanding or its commitments hereunder are in force.
      Agent shall not be required to keep itself informed as to the performance
      or observance by Borrowers of this Agreement or any other document
      referred to or provided for herein or to inspect the properties or books
      of Borrowers. Other than as provided in this Agreement, Agent shall not
      have any duty, responsibility or liability to provide any Lender with any
      credit or other information concerning the affairs, financial condition or
      business of Borrowers which may come into the possession of Agent.

            (h) Indemnification. Lenders agree to indemnify Agent, ratably
      according to their respective Commitments on a Pro Rata basis, from and
      against any and all liabilities, obligations, losses, damages, penalties,
      actions, judgments, suits, costs, expenses or disbursements of any proper
      and reasonable kind or nature whatsoever which may be imposed on, incurred
      by or asserted against Agent in any way relating to or arising out of the
      Loan Documents or any action taken or omitted by Agent under the Loan
      Documents, provided that no Lender shall be liable for any portion of such
      liabilities, obligations, losses, damages, penalties, actions, judgments,
      suits, costs, expenses or disbursements resulting from Agent's gross
      negligence or willful misconduct. Each Lender shall be entitled to be
      reimbursed by Agent for any amount such Lender paid to Agent under this
      Section 15(h) to the extent Agent has been reimbursed for such payments by
      Borrowers or any other Person. THE PARTIES INTEND FOR THE PROVISIONS OF
      THIS SECTION TO APPLY TO AND PROTECT THE AGENT FROM THE CONSEQUENCES OF
      ANY LIABILITY INCLUDING STRICT LIABILITY IMPOSED OR THREATENED TO BE
      IMPOSED ON AGENT AS WELL AS FROM THE CONSEQUENCES OF ITS OWN NEGLIGENCE,
      WHETHER OR NOT THAT NEGLIGENCE IS THE SOLE, CONTRIBUTING OR CONCURRING
      CAUSE OF ANY SUCH LIABILITY.

            (i) Benefit of Section 15. The agreements contained in this Section
      15 are solely for the benefit of Agent and the Lenders and are not for the
      benefit of, or to be relied upon by, Borrowers, any affiliate of Borrowers
      or any other Person.

            (j) Pro Rata Treatment. Subject to the provisions of this Agreement,
      each payment (including each prepayment) by Borrowers and each collection
      by Lenders (including offsets) on account of the principal of and interest
      on the Notes and fees provided for in this Agreement, that are payable by
      Borrowers, shall be made Pro Rata; provided, however, in the event that
      any Defaulting Lender shall have failed to make an Advance as contemplated
      under Section 2 and Agent or another Lender or Lenders shall have made
      such Advance, payment received by Agent for the account of such Defaulting
      Lender or Lenders shall not be distributed to such Defaulting Lender or
      Lenders until

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<PAGE>

      such Advance or Advances shall have been repaid in full to the Lender or
      Lenders who funded such Advance or Advances.

            (k) Assumption as to Payments. Except as specifically provided
      herein, unless Agent shall have received notice from Borrowers prior to
      the date on which any payment is due to Lenders hereunder that Borrowers
      will not make such payment in full, Agent may, but shall not be required
      to, assume that Borrowers have made such payment in full to Agent on such
      date and Agent may, in reliance upon such assumption, cause to be
      distributed to each Lender on such due date an amount equal to the amount
      then due such Lender. If and to the extent Borrowers shall not have so
      made such payment in full to Agent, each Lender shall repay to Agent
      forthwith on demand such amount distributed to such Lender together with
      interest thereon, for each day from the date such amount is distributed to
      such Lender until the date such Lender repays such amount to Agent, at the
      interest rate applicable to such portion of the Loan.

            (l) Other Financings. Without limiting the rights to which any
      Lender otherwise is or may become entitled, such Lender shall have no
      interest, by virtue of this Agreement or the Loan Documents, in (a) any
      present or future loans from, letters of credit issued by, or leasing or
      other financial transactions by, any other Lender to, on behalf of, or
      with Borrowers (collectively referred to herein as "Other Financings")
      other than the obligations hereunder; (b) any present or future guarantees
      by or for the account of Borrowers which are not contemplated by the Loan
      Documents; (c) any present or future property taken as security for any
      such Other Financings; or (d) any property now or hereafter in the
      possession or control of any other Lender which may be or become security
      for the obligations of Borrowers arising under any Loan Document by reason
      of the general description of indebtedness secured or property contained
      in any other agreements, documents or instruments relating to any such
      Other Financings.

            (m) Interests of Lenders. Nothing in this Agreement shall be
      construed to create a partnership or joint venture between Lenders for any
      purpose. Agent, Lenders and Borrowers recognize that the respective
      obligations of Lenders under the Commitments shall be several and not
      joint and that neither Agent nor any of Lenders shall be responsible or
      liable to perform any of the obligations of the other under this
      Agreement. Each Lender is deemed to be the owner of an undivided interest
      in and to all rights, titles, benefits and interests belonging and
      accruing to Agent under the Security Instruments, including, without
      limitation, liens and security interests in any collateral, fees and
      payments of principal and interest by Borrowers under the Commitments on a
      Pro Rata basis. Each Lender shall perform all duties and obligations of
      Lenders under this Agreement in the same proportion as its ownership
      interest in the Loans outstanding at the date of determination thereof.

            (n) Investments. Whenever Agent in good faith determines that it is
      uncertain about how to distribute to Lenders any funds which it has
      received, or whenever Agent in good faith determines that there is any
      dispute among the Lenders about how such funds

Second Amended and Restated Credit Agreement - Page 62

<PAGE>

      should be distributed, Agent may choose to defer distribution of the funds
      which are the subject of such uncertainty or dispute. If Agent in good
      faith believes that the uncertainty or dispute will not be promptly
      resolved, or if Agent is otherwise required to invest funds pending
      distribution to the Lenders, Agent may invest such funds pending
      distribution (at the risk of Borrowers). All interest on any such
      investment shall be distributed upon the distribution of such investment
      and in the same proportions and to the same Persons as such investment.
      All monies received by Agent for distribution to the Lenders (other than
      to the Person who is Agent in its separate capacity as a Lender) shall be
      held by the Agent pending such distribution solely as Agent for such
      Lenders, and Agent shall have no equitable title to any portion thereof.

            (o) Delegation to Affiliates. Borrowers and the Lenders agree that
      the Agent may delegate any of its duties under this Agreement to any of
      its Affiliates. Any such Affiliate (and such Affiliate's directors,
      officers, agents and employees) which perform duties in connection with
      this Agreement shall be entitled to the same benefits of the
      indemnification, waiver and other protective provisions to which the Agent
      is entitled under Sections 15 and 18.

            (p) Execution of Collateral Documents. The Lenders hereby empower
      and authorize the Agent to execute and deliver the Security Instruments
      and all related financing statements and other financing statements,
      agreements, documents or instruments that shall be necessary or
      appropriate to effect the purposes of the Security Instruments.

            (q) Collateral Releases. The Lenders hereby empower and authorize
      the Agent to execute and deliver to Borrowers on their behalf any
      agreements, documents, or instruments as shall be necessary or appropriate
      to reflect any releases of Collateral which shall be permitted by the
      terms hereof (including, without limitation, the release of Collateral
      that Borrowers are permitted to sell pursuant to Section 13(a)(ii)) or of
      any other Loan Document or which shall otherwise have been approved by the
      Super Majority Lenders pursuant to Section 15.

            (r) Co-Agents, Documentation Agent, Syndication Agent, etc. Neither
      any of the Lenders identified in this Agreement as the Co-Documentation
      Agents or Co-Syndication Agents shall have any right, power, obligation,
      liability, responsibility or duty under this Agreement other than those
      applicable to all Lenders as such. Without limiting the foregoing, none of
      such Lenders shall have or be deemed to have a fiduciary relationship with
      any Lender. Each Lender hereby makes the same acknowledgments with respect
      to such Lenders as it makes with respect to the Agent in such Section
      15(g).

      16. EXERCISE OF RIGHTS. No failure to exercise, and no delay in
exercising, on the part of the Agent or the Lenders, any right hereunder shall
operate as a waiver thereof, nor shall any single or partial exercise thereof
preclude any other or further exercise thereof or the exercise of

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<PAGE>

any other right. The rights of the Agent and the Lenders hereunder shall be in
addition to all other rights provided by law.

      17. NOTICES. Any notices or other communications required or permitted to
be given by this Agreement or any other documents or instruments referred to
herein must be given in writing (which may be by bank wire, telecopy or similar
writing) and shall be given to the party to whom such notice or communication is
directed at the address or telecopy number of such party as follows: (a)
BORROWERS AND GUARANTORS: c/o RANGE RESOURCES CORPORATION, 777 Main Street,
Suite 800, Fort Worth, Texas 76102, Attention: Roger Manny, Chief Financial
Officer, (b) AGENT: Bank One, NA, Mail Code IL1-0634, 1 Bank One Plaza, Chicago,
Illinois, 60670-0634, Facsimile No.: (312) 732-4840, Attention: Jim Moore, with
a copy to BANK ONE, NA, 1717 Main Street, TX1-2448, Dallas, Texas 75201,
Facsimile No. (214) 290-2332, Attention: Wm. Mark Cranmer, Director, Capital
Markets, and (c) LENDERS: at such Lender's address or facsimile number set forth
below its name on Annex A attached hereto or in the assignment pursuant to which
such Lender became a party hereto, with a copy to: Bank One, NA, 1 Bank One
Plaza, IL1-0429, Chicago, Illinois 60670, Attention: Syndication. Any such
notice or other communication shall be effective (a) if given by telecopy, when
such telecopy is transmitted to the telecopy number specified in this Section 17
and the appropriate answerback is received or receipt is otherwise confirmed,
(b) if given by mail, three (3) days after deposit in the mails with first-class
postage, prepaid, as addressed as aforesaid or (c) if given by any other method,
when delivered at the address specified in this Section 17; provided, however,
that notices to the Agent under Sections 2, 3, 4 or 5 shall not be effective
until received. Any notice required to be given to the Lenders shall be given to
the Agent and distributed to all Lenders by the Agent.

      18. EXPENSES. Borrowers shall pay (i) all reasonable and necessary
out-of-pocket expenses of the Agent, including reasonable fees and disbursements
of special counsel for the Agent, in connection with the preparation of this
Agreement, any waiver or consent hereunder or any amendment hereof or any
Default or Event of Default or alleged Default or Event of Default hereunder,
(ii) all reasonable and necessary out-of-pocket expenses of the Agent, including
reasonable fees and disbursements of special counsel for the Agent in connection
with the preparation of any participation agreement for a participant or
participants requested by Borrowers or any amendment thereof and (iii) if a
Default or an Event of Default occurs, all reasonable and necessary
out-of-pocket expenses incurred by the Lenders, including reasonable fees and
disbursements of counsel, in connection with such Default and Event of Default
and collection and other enforcement proceedings resulting therefrom. BORROWERS
HEREBY ACKNOWLEDGE THAT GARDERE WYNNE SEWELL LLP IS SPECIAL COUNSEL TO BANK ONE,
AS AGENT AND AS A LENDER, UNDER THIS AGREEMENT AND THAT IT IS NOT COUNSEL TO,
NOR DOES IT REPRESENT BORROWER IN CONNECTION WITH THE TRANSACTIONS DESCRIBED IN
THIS AGREEMENT. Borrowers are relying on separate counsel in the transaction
described herein. Borrowers shall indemnify the Lenders against any transfer
taxes, document taxes, assessments or charges made by any governmental authority
by reason of the execution, delivery and filing of the Loan

Second Amended and Restated Credit Agreement - Page 64

<PAGE>

Documents. The obligations of this Section 18 shall survive any termination of
this Agreement, the expiration of the Loans and the payment of all Obligations
of Borrowers to the Lenders hereunder and under the Notes.

      19. INDEMNITY. Borrowers hereby agree to indemnify the Agent, the
Arranger, each Lender, their respective Affiliates, and each of their directors,
officers, and employees (the "Indemnified Parties") against all losses, claims,
damages, penalties, judgments, liabilities and expenses (including, without
limitation, all expenses of litigation or preparation therefor of any
Indemnified Party, the Agent, the Arranger, any Lender or any Affiliate that is
a party thereto) which any of them may pay or incur arising out of or relating
to this Agreement, the other Loan Documents, the transactions contemplated
hereby or the direct or indirect application or proposed application of the
proceeds of any loan hereunder even if any of the foregoing arises out of the
ordinary negligence of the party seeking indemnification except to the extent
that they are determined in a final non-appealable judgment by a court of
competent jurisdiction to have resulted from the gross negligence or willful
misconduct of the party seeking indemnification. The indemnity set forth herein
shall be in addition to any other obligations or liabilities of Borrowers to any
Indemnified Party, the Agent, the Arranger and each of the Lenders hereunder or
at common law or otherwise, and shall survive any termination of this Agreement,
the expiration of the Loans and the payment of all Obligations of Borrower to
the Lenders hereunder and under the Notes. THE PARTIES INTEND FOR THE PROVISIONS
OF THIS SECTION TO APPLY TO AND PROTECT EACH INDEMNIFIED PARTY FROM THE
CONSEQUENCES OF ANY LIABILITY INCLUDING STRICT LIABILITY IMPOSED OR THREATENED
TO BE IMPOSED ON AGENT AS WELL AS FROM THE CONSEQUENCES OF ITS OWN NEGLIGENCE,
WHETHER OR NOT THAT NEGLIGENCE IS THE SOLE, CONTRIBUTING, OR CONCURRING CAUSE OF
ANY CLAIM.

      20. NON-LIABILITY OF LENDERS. The relationship between Borrowers on the
one hand and the Lenders and the Agent on the other hand shall be solely that of
borrower and lender. Neither the Agent, the Arranger nor any Lender shall have
any fiduciary responsibility to Borrowers. Neither the Agent, the Arranger nor
any Lender undertakes any responsibility to Borrowers to review or inform
Borrowers of any matter in connection with any phase of any Borrower's
businesses or operations. Borrowers agree that neither the Agent, the Arranger
nor any Lender shall have any liability to Borrowers (whether sounding in tort,
contract or otherwise) for losses suffered by Borrowers in connection with,
arising out of, or in any way related to, the transactions contemplated and the
relationship established by this Agreement and the other Loan Documents, or any
act, omission or event occurring in connection therewith, unless it is
determined in a final non-appealable judgment by a court of competent
jurisdiction that such loss resulted from the gross negligence or willful
misconduct of the party from which recovery is sought. Neither the Agent, the
Arranger nor any Lender shall have any liability with respect to, and Borrowers
hereby waive, release and agree not to sue for, any special, indirect,
consequential or punitive damages suffered by Borrowers in connection with,
arising out of, or in

Second Amended and Restated Credit Agreement - Page 65

<PAGE>

any way related to this Agreement, the Loan Documents or any transaction
contemplated thereby.

      21. GOVERNING LAW. THIS AGREEMENT IS BEING EXECUTED AND DELIVERED, AND IS
INTENDED TO BE PERFORMED, IN DALLAS, DALLAS COUNTY, TEXAS, AND THE SUBSTANTIVE
LAWS OF TEXAS SHALL GOVERN THE VALIDITY, CONSTRUCTION, ENFORCEMENT AND
INTERPRETATION OF THIS AGREEMENT AND ALL OTHER DOCUMENTS AND INSTRUMENTS
REFERRED TO HEREIN, UNLESS OTHERWISE SPECIFIED THEREIN.

      22. INVALID PROVISIONS. If any provision of this Agreement is held to be
illegal, invalid, or unenforceable under present or future laws effective during
the term of this Agreement, such provisions shall be fully severable and this
Agreement shall be construed and enforced as if such illegal, invalid or
unenforceable provision had never comprised a part of this Agreement, and the
remaining provisions of the Agreement shall remain in full force and effect and
shall not be affected by the illegal, invalid or unenforceable provision or by
its severance from this Agreement.

      23. MAXIMUM INTEREST RATE. Regardless of any provisions contained in this
Agreement or in any other documents and instruments referred to herein, the
Lenders shall never be deemed to have contracted for or be entitled to receive,
collect or apply as interest on the Notes any amount in excess of the Maximum
Rate, and in the event any Lender ever receives, collects or applies as interest
any such excess, or if an acceleration of the maturities of any Notes or if any
prepayment by Borrowers results in Borrowers having paid any interest in excess
of the Maximum Rate, such amount which would be excessive interest shall be
applied to the reduction of the unpaid principal balance of the Notes for which
such excess was received, collected or applied, and, if the principal balance of
such Note is paid in full, any remaining excess shall forthwith be paid to
Borrowers. All sums paid or agreed to be paid to the Lenders for the use,
forbearance or detention of the Obligations evidenced by the Notes and/or this
Agreement shall, to the extent permitted by applicable law, be amortized,
prorated, allocated and spread throughout the full term of such Obligations
until payment in full so that the rate or amount of interest on account of such
Obligations does not exceed the Maximum Rate. In determining whether or not the
interest paid or payable under any specific contingency exceeds the Maximum Rate
of interest permitted by law, Borrowers and the Lenders shall, to the maximum
extent permitted under applicable law, (i) characterize any non-principal
payment as an expense, fee or premium, rather than as interest; and (ii) exclude
voluntary prepayments and the effect thereof; and (iii) compare the total amount
of interest contracted for, charged or received with the total amount of
interest which could be contracted for, charged or received throughout the
entire contemplated term of the Note at the Maximum Rate.

      For purposes of Section 303 of the Texas Finance Code, to the extent
applicable to any Lender or Agent, Borrowers agree that the Maximum Rate shall
be the "weekly ceiling" as defined in said Chapter, provided that such Lender or
Agent, as applicable, may also rely, to the extent permitted by applicable laws
of the State of Texas and the United States of America, on

Second Amended and Restated Credit Agreement - Page 66

<PAGE>

alternative maximum rates of interest under the Texas Finance Code or other laws
applicable to such Lender or Agent from time to time if greater (the "Maximum
Rate").

      24. AMENDMENTS AND WAIVERS. This Agreement may be amended only by an
instrument in writing executed by an authorized officer of the party against
whom such amendment is sought to be enforced. No modification or waiver of any
provision of the Loan Documents, including this Agreement, or the Notes nor
consent to departure therefrom, shall be effective unless in writing signed by
Borrowers and Required Lenders; provided, however, that no amendment, waiver, or
other action shall be effected pursuant to this Section 24 without the consent
of all Lenders which: (a) would increase the Borrowing Base, (b) would reduce
any fees hereunder, or the principal of, or the interest on, any Lender's Note
or Notes, (c) would postpone any date fixed for any payment of any fees
hereunder, or any principal or interest of any Lender's Note or Notes, (d) would
increase the aggregate Commitments or any Lender's individual Commitment
hereunder or would materially alter Agent's obligations to any Lender hereunder,
(e) would release Borrowers from their obligation to pay any Lender's Note or
Notes, (f) would release any Guarantor from its obligations under any Guaranty,
(g) would change the definition of Required Lenders or Super Majority Lenders,
or (h) would amend this sentence. No such consent or waiver shall extend beyond
the particular case and purpose involved. No notice or demand given in any case
shall constitute a waiver of the right to take other action in the same, similar
or other circumstances without such notice or demand. No amendment of any
provision of this Agreement relating to the Agent shall be effective without the
written consent of the Agent.

      25. MULTIPLE COUNTERPARTS. This Agreement may be executed in any number of
counterparts, all of which taken together shall constitute one agreement, and
any of the parties hereto may execute this Agreement by signing any such
counterpart; signature pages may be detached from multiple separate counterparts
and attached to a single counterpart so that all signature pages are physically
attached to the same document. This Agreement shall be effective when it has
been executed by Borrowers, the Agent, and the Lenders and each party has
notified the Agent by facsimile transmission or telephone that it has taken such
action.

      26. CONFLICT. In the event any term or provision hereof is inconsistent
with or conflicts with any provision of the Loan Documents, the terms or
provisions contained in this Agreement shall be controlling.

      27. SURVIVAL. All covenants, agreements, undertakings, representations and
warranties made in the Loan Documents, including this Agreement, the Notes or
other documents and instruments referred to herein shall survive all closings
hereunder and shall not be affected by any investigation made by any party.

      28. PARTIES BOUND. This Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective successors, assigns, heirs,
legal representatives and estates, provided, however, that Borrowers may not,
without the prior written consent of all of the Lenders, assign any rights,
powers, duties or obligations hereunder.

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<PAGE>

      29. ASSIGNMENTS AND PARTICIPATIONS.

            (a) Each Lender shall have the right to sell, assign or transfer all
      or any part of its Note or Notes, its Commitment and its rights and
      obligations hereunder to one or more Affiliates, Lenders, financial
      institutions, pension plans, insurance companies, investment funds, or
      similar Persons who are Eligible Assignees or to a Federal Reserve Bank;
      provided, that each sale, assignment or transfer (other than to an
      Affiliate or a Federal Reserve Bank) shall require the consent of Agent
      and Borrower, which consents will not be unreasonably withheld; provided,
      however, that if an Event of Default has occurred and is continuing, the
      consent of Borrower shall not be required. Any such assignee, transferee
      or recipient shall have, to the extent of such sale, assignment, or
      transfer, the same rights, benefits and obligations as it would if it were
      such Lender and a holder of such Note, Commitment and rights and
      obligations, including, without limitation, the right to vote on decisions
      requiring consent or approval of all Lenders or Super Majority Lenders and
      the obligation to fund its Commitment; provided, that (1) each such sale,
      assignment, or transfer (other than to an Affiliate or a Federal Reserve
      Bank) shall be in an aggregate principal amount not less than $5,000,000,
      (2) each remaining Lender shall at all times maintain Commitment then
      outstanding in an aggregate principal amount at least equal to $5,000,000;
      (3) each such sale, assignment or transfer shall be of a Pro Rata portion
      of such Lender's Commitment, (4) no Lender may offer to sell its Note or
      Notes, Commitment, rights and obligations or interests therein in
      violation of any securities laws; and (5) no such assignments (other than
      to a Federal Reserve Bank) shall become effective until the assigning
      Lender and its assignee delivers to Agent and Borrower an Assignment and
      Acceptance and the Note or Notes subject to such assignment and other
      documents evidencing any such assignment. An assignment fee in the amount
      of $3,500 for each such assignment (other than to an Affiliate, a Lender
      or the Federal Reserve Bank) will be payable to Agent by assignor or
      assignee. Within five (5) Business Days after its receipt of copies of the
      Assignment and Acceptance and the other documents relating thereto and the
      Note or Notes, Borrower shall execute and deliver to Agent (for delivery
      to the relevant assignee) a new Note or Notes evidencing such assignee's
      assigned Commitment and if the assignor Lender has retained a portion of
      its Commitment, a replacement Note in the principal amount of the
      Commitment retained by the assignor (except as provided in the last
      sentence of this paragraph (a) such Note or Notes to be in exchange for,
      but not in payment of, the Note or Notes held by such Lender). On and
      after the effective date of an assignment hereunder, the assignee shall
      for all purposes be a Lender, party to this Agreement and any other Loan
      Document executed by the Lenders and shall have all the rights and
      obligations of a Lender under the Loan Documents, to the same extent as if
      it were an original party thereto, and no further consent or action by
      Borrower, Lenders or the Agent shall be required to release the transferor
      Lender with respect to its Commitment assigned to such assignee and the
      transferor Lender shall henceforth be so released.

Second Amended and Restated Credit Agreement - Page 68

<PAGE>

            (b) Each Lender shall have the right to grant participations in all
      or any part of such Lender's Notes and Commitment hereunder to one or more
      pension plans, investment funds, insurance companies, financial
      institutions or other Persons, provided, that:

                  (i) each Lender granting a participation shall retain the
            right to vote hereunder, and no participant shall be entitled to
            vote hereunder on decisions requiring consent or approval of Lender
            or Super Majority Lenders (except as set forth in (iii) below);

                  (ii) in the event any Lender grants a participation hereunder,
            such Lender's obligations under the Loan Documents shall remain
            unchanged, such Lender shall remain solely responsible to the other
            parties hereto for the performance of such obligations, such Lender
            shall remain the holder of any such Note or Notes for all purposes
            under the Loan Documents, and Agent, each Lender and Borrower shall
            be entitled to deal with the Lender granting a participation in the
            same manner as if no participation had been granted; and

                  (iii) no participant shall ever have any right by reason of
            its participation to exercise any of the rights of Lenders
            hereunder, except that any Lender may agree with any participant
            that such Lender will not, without the consent of such participant
            (which consent may not be unreasonably withheld) consent to any
            amendment or waiver requiring approval of all Lenders.

            (c) It is understood and agreed that any Lender may provide to
      assignees and participants and prospective assignees and participants
      financial information and reports and data concerning Borrower's
      properties and operations which was provided to such Lender pursuant to
      this Agreement, provided, that each recipient thereto has first agreed,
      for the benefit of Borrower, to hold such information, reports and data in
      confidence on the terms set out in Section 12(j).

            (d) Upon the reasonable request of either Agent or Borrower, each
      Lender will identify those to whom it has assigned or participated any
      part of its Notes and Commitment, and provide the amounts so assigned or
      participated.

      30. Confidentiality. Each Lender agrees to hold any information which it
may receive from any Borrower pursuant to this Agreement in confidence, except
for disclosure (i) to its Affiliates and to other Lenders and their respective
Affiliates, (ii) to legal counsel, accountants, and other professional advisors
to such Lender or to a Transferee, (iii) to regulatory officials, (iv) to any
Person as requested pursuant to or as required by law, regulation, or legal
process, (v) to any Person in connection with any legal proceeding to which such
Lender is a party, (vi) to such Lender's direct or indirect contractual
counterparties in swap agreements or to

Second Amended and Restated Credit Agreement - Page 69

<PAGE>

legal counsel, accountants and other professional advisors to such
counterparties, (vii) permitted by Section 29 and (viii) to rating agencies if
requested or required by such agencies in connection with a rating relating to
the Advances hereunder. Notwithstanding anything herein to the contrary,
confidential information shall not include, and each Lender (and each employee,
representative or other agent of any Lender) may disclose to any and all
Persons, without limitation of any kind, information generally known to the
public, information obtained by any Lender from sources other than the Company
or any of its Subsidiaries either before or after the date of this agreement,
and the "tax treatment" and "tax structure" (in each case, within the meaning of
Treasury Regulation Section 1.6011-4) of the transactions contemplated hereby
and all materials of any kind (including opinions or other tax analyses) that
are or have been provided to such Lender relating to such tax treatment or tax
structure; provided that with respect to any document or similar item that in
either case contains information concerning such tax treatment or tax structure
of the transactions contemplated hereby as well as other information, this
sentence shall only apply to such portions of the document or similar item that
relate to such tax treatment or tax structure.

      31. CHOICE OF FORUM: CONSENT TO SERVICE OF PROCESS AND JURISDICTION. THE
OBLIGATIONS OF BORROWERS UNDER THE LOAN DOCUMENTS ARE PERFORMABLE IN DALLAS
COUNTY, TEXAS. ANY SUIT, ACTION OR PROCEEDING AGAINST BORROWERS WITH RESPECT TO
THE LOAN DOCUMENTS OR ANY JUDGMENT ENTERED BY ANY COURT IN RESPECT THEREOF, MAY
BE BROUGHT IN THE COURTS OF THE STATE OF TEXAS, COUNTY OF DALLAS, OR IN THE
UNITED STATES COURTS LOCATED IN DALLAS COUNTY, TEXAS AND BORROWERS HEREBY SUBMIT
TO THE NON-EXCLUSIVE JURISDICTION OF SUCH COURTS FOR THE PURPOSE OF ANY SUCH
SUIT, ACTION OR PROCEEDING. BORROWER HEREBY IRREVOCABLY CONSENT TO SERVICE OF
PROCESS IN ANY SUIT, ACTION OR PROCEEDING IN SAID COURT BY THE MAILING THEREOF
BY LENDER BY REGISTERED OR CERTIFIED MAIL, POSTAGE PREPAID, TO BORROWERS, AT THE
ADDRESS FOR NOTICES AS PROVIDED IN SECTION 17. BORROWERS HEREBY IRREVOCABLY
WAIVE ANY OBJECTION WHICH THEY MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE
OF ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO ANY LOAN
DOCUMENT BROUGHT IN THE COURTS LOCATED IN THE STATE OF TEXAS, COUNTY OF DALLAS,
AND HEREBY FURTHER IRREVOCABLY WAIVE ANY CLAIM THAT ANY SUCH SUIT, ACTION OR
PROCEEDING BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.

      32. WAIVER OF JURY TRIAL. BORROWERS, THE AGENT AND THE LENDERS HEREBY
WAIVE, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO
TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATED TO THIS
AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY.

Second Amended and Restated Credit Agreement - Page 70

<PAGE>

      33. OTHER AGREEMENTS. THIS WRITTEN CREDIT AGREEMENT AND THE OTHER LOAN
DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES.

      34. FINANCIAL TERMS. All accounting terms used in this Agreement which are
not specifically defined herein shall be construed in accordance with GAAP.

      35. INTERPRETATION, ETC. Any of the terms defined herein may, unless the
context otherwise requires, be used in the singular or the plural, depending on
the reference. References herein to any Section, Annex, Exhibit or Schedule
shall be to a Section, Annex, Exhibit or Schedule, as the case may be, hereof
unless otherwise specifically provided. The use herein of the word "include" or
"including", when following any general statement, term or matter, shall not be
construed to limit such statement, term or matter to the specific items or
matters set forth immediately following such word or to similar items or
matters, whether or not nonlimiting language (such as "without limitation" or
"but not limited to" or words of similar import) is used with reference thereto,
but rather shall be deemed to refer to all other items or matters that fall
within the broadest possible scope of such general statement, term or matter.

      36. USA PATRIOT ACT NOTIFICATION. The following notification is provided
to each Borrower pursuant to Section 326 of the USA Patriot Act of 2001, 31
U.S.C. Section 5318:

IMPORTANT INFORMATION ABOUT PROCEDURES FOR OPENING A NEW ACCOUNT. To help the
government fight the funding of terrorism and money laundering activities,
Federal law requires all financial institutions to obtain, verify, and record
information that identifies each Person or entity that opens an account,
including any deposit account, treasury management account, loan, other
extension of credit, or other financial services product. What this means for
Borrowers: When any Borrower opens an account, if such Borrower is an
individual, the Agent and the Lenders will ask for such Borrower's name,
residential address, tax identification number, date of birth, and other
information that will allow the Agent and the Lenders to identify such Borrower,
and, if such Borrower is not an individual, the Agent and the Lenders will ask
for such Borrower's name, tax identification number, business address, and other
information that will allow the Agent and the Lenders to identify such Borrower.
The Agent and the Lenders may also ask if such Borrower is an individual, to see
such Borrower's driver's license or other identifying documents, and, if such
Borrower is not an individual, to see such Borrower's Organizational Documents
or other identifying documents.

      37. ORIGINAL CREDIT AGREEMENT. Effective upon the Effective Date, this
Agreement shall supersede in its entirety the Original Credit Agreements;
provided, however, that all loans, letters of credit, and other indebtedness,
obligations and liabilities outstanding under the Original Credit Agreements on
such date shall continue to constitute Loans, Letters of Credit and other
Obligations under this Agreement and the execution and delivery of this
Agreement or any of the

Second Amended and Restated Credit Agreement - Page 71

<PAGE>

Loan Documents hereunder shall not constitute a novation, refinancing or any
other fundamental change in the relationship among the parties and the Loans,
Letters of Credit, and other Obligations outstanding hereunder, to the extent
outstanding under the Original Credit Agreements immediately prior to the date
hereof, shall constitute the same loans, letters of credit, and other
indebtedness, obligations and liabilities as outstanding under the Original
Credit Agreements. In addition to the foregoing, on the date of the initial
Advance all then outstanding LIBOR Loans and Base Rate Loans under then Original
Credit Agreements shall be deemed converted to LIBOR Loans and Base Rate Loans
under this Agreement in the amounts specified by the Borrowers in a Notice of
Continuation dated the date hereof and delivered to the Agent by the Borrowers
prior to the initial Advance.

      38. TRI-PARTY LOAN. Texas Finance Code, Section 346 shall not apply to
loans evidenced by this Agreement or the Notes.

      39. REALLOCATION OF COMMITMENTS. The Lenders have agreed among themselves
to reallocate their respective Commitments and to allow the June 2004 New
Lenders to acquire an interest in the Commitments and the Loans and to allow
JPMorgan Chase Bank to transfer and assign its interest in the Commitments and
the Loans. After such reallocation of the Commitments, on the date hereof, the
Lenders shall own the Commitment Percentages set forth on Annex A to this
Agreement. With respect to such reallocation, each of the June 2004 New Lenders
shall be deemed to have acquired the Commitments and Loans allocated to them
from each of the Lenders and JPMorgan Chase Bank pursuant to the terms of the
Assignment and Acceptance Agreement attached as Exhibit E to this Agreement as
if the June 2004 New Lenders, the Lenders and JPMorgan Chase Bank had executed
an Assignment and Acceptance Agreement with respect to such allocation and the
transfer and assignment of JPMorgan Chase Bank's allocation under the Original
Credit Agreement. Each Lender and JPMorgan Chase Bank shall surrender its
existing Note and each Lender shall be issued a new Note in a face amount equal
to each Lender's Commitment Percentage times $600,000,000. Each said Note to be
in the form of Exhibit "B" to this Agreement with appropriate insertions. The
funds delivered to Agent by each of the June 2004 New Lenders to acquire an
interest in the Commitments and the Loans shall be allocated such that after
giving effect to such allocation and payment each of the Lender's shall own the
Commitment Percentages set forth on Annex A to this Agreement.

Second Amended and Restated Credit Agreement - Page 72

<PAGE>

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

                                         BORROWERS:

                                         RANGE RESOURCES CORPORATION
                                         a Delaware corporation

                                         By:
                                            ----------------------------------
                                         Name:  Roger S. Manny
                                         Title: Senior Vice President

                                         GREAT LAKES ENERGY PARTNERS, L.L.C.
                                         a Delaware limited liability company

                                         By: Range Holdco, Inc.
                                             Its member

                                         By:
                                            ----------------------------------
                                         Name:  Roger S. Manny
                                         Title: Senior Vice President

                                         By: Range Energy I, Inc.
                                             Its member

                                         By:
                                            ----------------------------------
                                         Name:  Roger S. Manny
                                         Title: Senior Vice President

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                      LENDERS:

                                      BANK ONE, NA, a national
                                      banking association (Main Office Chicago)
                                      as a Lender and Administrative Agent

                                      By:
                                         --------------------------------------
                                      Name:  Wm. Mark Cranmer
                                      Title: Director, Capital Markets

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         BANK OF SCOTLAND

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         COMPASS BANK

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         CALYON NEW YORK BRANCH, AS SUCCESSOR
                                         BY CONSOLIDATION TO CREDIT LYONNAIS
                                         NEW YORK BRANCH

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         FLEET NATIONAL BANK

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         FORTIS CAPITAL CORP.

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         NATEXIS BANQUES POPULAIRES

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

                                         By:
                                            -----------------------------------
                                         Name:
                                              ---------------------------------
                                         Title:
                                               --------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         COMERICA BANK

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         HIBERNIA NATIONAL BANK

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         SOUTHWEST BANK OF TEXAS, N.A.

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         HARRIS NESBITT FINANCING, INC.

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         THE BANK OF NOVA SCOTIA

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         THE FROST NATIONAL BANK

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         UNION BANK OF CALIFORNIA, N.A.

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         KEY BANK

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                         WACHOVIA BANK, NATIONAL
                                         ASSOCIATION

                                         By:
                                                -------------------------------
                                         Name:
                                                -------------------------------
                                         Title:
                                                -------------------------------

Second Amended and Restated Credit Agreement  -  Signature Page

<PAGE>

                                     ANNEX A

                             COMMITMENT PERCENTAGES

            LENDER                                      COMMITMENT PERCENTAGE

Bank One, NA                                                      9%
1 Bank One Plaza
Mail Code IL1-0634
Chicago, Illinois 60670-0634
Attention:  Jim Moore
Telephone:  (312) 385-7057
Facsimile:  (312) 385-7096

Bank of Scotland                                                  9%
565 Fifth Avenue
New York, New York  10017
Attention:  Ms. Shirley Vargas
Telephone:  (212) 450-0875
Facsimile:  (212) 479-2807

Compass Bank                                                      5%
600 N. Main Avenue
San Antonio, Texas  78205
Attention:  Ellan Watkins
Telephone:  (713) 968-8279
Facsimile:  (713) 968-8292

Calyon New York Branch                                            9%
1301 Avenue of the Americas
New York, New York  10019
Attention:  Gener David
Telephone:  (212) 261-7741
Facsimile:  (917) 849-5440

Fleet National Bank                                               7%
100 Federal Street, MA DE 10008A
Boston, Massachusetts  02110
Attention:  Jeffrey Rathkamp
Telephone:  (617) 434-9061
Facsimile:  (617) 434-3652

Second Amended and Restated Credit Agreement

<PAGE>

Fortis Capital Corp.                                              9%
15455 North Dallas Parkway,
Suite 1400
Addison, Texas 75001
Attention:  Frank Campanelli
Telephone:  (203) 705-5898
Facsimile:  (203) 705-5888

Natexis Banques Populaires                                        5%
Southwest Representative Office
333 Clay Street, Suite 4340
Houston, Texas 77002
Attention:  Tanya McAllister
Telephone:  (713) 759-9409
Facsimile:  (713) 571-6165

Comerica Bank                                                     7%
1601 Elm Street, 2nd Floor
Dallas, Texas  75201
Attention:  Michele Jones with a copy to Cathy Watson
Telephone:  (214) 969-6564
Facsimile:  (214) 969-6561

Hibernia National Bank                                            3%
313 Carondelet Street, 10th Floor
New Orleans, Louisiana 70130
Attention:  Joyce Baker
Telephone:  (504) 533-5352
Facsimile:  (504)533-5434

Southwest Bank of Texas, N.A.                                     3%
4295 San Felipe
Houston, Texas  77027
Attention:  Maxine Hunter
Telephone:  (713) 232-6355
Facsimile:  (713) 963-7467

Harris Nesbitt Financing, Inc.                                    7%
115 S. LaSalle Streeet
Chicago, Illinois 60603
Attention:  Terri Mikula
Telephone:  (312) 750-5947
Facsimile:  (312)750-6061

Second Amended and Restated Credit Agreement

<PAGE>

Key Bank                                                          5%
127 Public Square
Cleveland, Ohio 44114
Attention:  Anita Anders
Telephone:  (216) 689-4561
Facsimile:  (216) 689-5962

Wachovia Bank, National Association                               5%
201 S. College, CP-9
Charlotte, NC 28288
Attention:  Cynthia Rawson
Telephone:  (704) 374-4425
Facsimile:  (704) 715-0097

Union Bank of California, N.A.                                    7%
1980 Saturn Street, Mail Code
Monterey Park, California 91755
Attention:  Maria Suncin
Telephone:  (323) 720-2870
Facsimile:  (323) 720-2252

The Bank of Nova Scotia                                           7%
600 Peachtree St. NE
Suite 2700
Atlanta, Georgia 30308
Attention:  Jill A. Retess
Telephone:  (404) 877-1544
Facsimile:  (404) 888-8998

The Frost National Bank                                           3%
777 Main Street
Suite 100
Fort Worth, Texas 76102
Attention:  Karen Moore
Telephone:  (210) 420-5673
Facsimile:  (210) 420-5250

Second Amended and Restated Credit Agreement

<PAGE>

                                PRICING SCHEDULE
                                APPLICABLE MARGIN

<TABLE>
<CAPTION>
                                                  APPLICABLE MARGIN FOR    APPLICABLE MARGIN FOR     APPLICABLE MARGIN FOR
BORROWING BASE USAGE                                 BASE RATE LOANS            LIBOR LOANS          UNUSED COMMITMENT FEE
<S>                                               <C>                      <C>                       <C>
Greater than or equal to 90%                             .625%                    1.875%                      .50%
Greater than or equal to 75% and less than 90%            .50%                     1.75%                     .375%
Greater than or equal to 50% and less than 75%            .25%                     1.50%                     .375%
Less than 50%                                               0%                     1.25%                      .25%
</TABLE>

Second Amended and Restated Credit Agreement<PAGE>
                                                                    EXHIBIT 10.1

                                    AGREEMENT

                  THIS AGREEMENT, dated as of February 20, 2004 (this
"Agreement") is by and between Janus Capital Group Inc., a Delaware corporation
(the "Company" or "JCG") and Robin Beery (the "Executive").

         WHEREAS, the Executive and the Company are parties to an Employment
Agreement, dated as of January 1, 2003 ("Original Agreement").

         WHEREAS, the parties believe that it is in the best interest of the
Company and its shareholders to revise certain terms of the Original Agreement.

         WHEREAS, the parties wish to have Executive's annual cash bonus for
2003 (the "2003 Bonus") as set forth in the Executive Bonus Plan be placed for a
two-year holding period in a separate Janus retail mutual fund account.

         WHEREAS, the Executive desires to enter into this Agreement under his
or her own volition and free will.

         Accordingly, in consideration of Ten Dollars ($10.00) and other good
and valuable consideration, the sufficiency and receipt of which are hereby
acknowledged, the parties hereto hereby agree as follows:

         1. Effective Date. The "Effective Date" shall mean February 20,
            2004.

         2. 2003 Bonus. Under the terms of the Original Agreement, the Executive
would have been entitled to receive an annual cash bonus for 2003 in two
separate payments (the "2003 Bonus") as set forth in the Executive Bonus Plan
approved by the Compensation Committee ("Committee") at its March 17, 2003,
meeting ("Bonus Plan"), subject to performance benchmarks in accordance with
Section 162(m) of the Internal Revenue Code of 1986, as amended (the "Code") and
the application of a negative discretionary factor up to 33.3% available to the
Compensation Committee. As of the Effective Date, the parties agree that all
amounts approved by the Committee and payable to Executive are in full accord
and satisfaction of all 2003 Bonus payments entitled to Executive under the
Bonus Plan. Such payments, net of applicable withholding requirements, shall be
deposited and transferred by the Company into a Janus retail mutual fund account
on behalf of, and in the name of, Executive (the "Account") until the two-year
holding period set forth in Section 3 is satisfied in such manner and at such
times as specified in this Agreement.

         3. Two-Year Holding Period. For a two-year holding period commencing on
the Effective Date and so long as Executive is employed by the Company or one of
its affiliates, all amounts deposited and transferred by the Company into the
Account in accordance with Section 2 and all gains or other income realized from
such investment in the Account, shall remain invested in the Account as directed
by the Executive or his or her properly designated agent. No amounts in the
Account may be withdrawn or transferred into another account by the Company or
the Executive until February 20, 2006, and all income received in the Account,
net of expenses and

<PAGE>

taxes, shall be accumulated and reinvested. In the event Executive is no longer
employed by the Company during the two-year holding period, all transfer
restrictions provided for in this Section 3 shall terminate.

         4. Executive's Investment Discretion. Except as otherwise provided
herein, the amounts transferred and deposited into the Executive's Account in
accordance with this Agreement shall be invested in one or more of the mutual
funds (each an "Investment Fund") provided by Janus Investment Fund ("JIF"),
subject to the compliance with all Company policies and the terms of the
respective Investment Fund's prospectus. The proportions in which the total
balance deposited into Executive's Account are to be allocated from time to time
among the Investment Funds shall be as directed by the Executive in his or her
sole discretion ("Investment Election"). Executive may change his or her
then-current Investment Election from time to time; provided, however, in no
event shall Executive make changes to his or her Investment Election more than
four (4) times per calendar year.

         Executive hereby acknowledges and agrees that (i) his or her Account
balance are subject to any net appreciation or depreciation accruing from time
to time based on the investment allocation of the Account balance in accordance
with Executive's Investment Election(s) in effect from time to time, (ii)
Executive is solely responsible for any net appreciation or net depreciation in
the balance of his or her Account resulting from Executive's Investment
Elections, and (iii) neither the Company nor JIF guarantees or represents in any
manner whatsoever that Executive will realize any appreciation in the balance of
the Account as a result of allocating the Account balance for investments in the
Investment Funds. Executive further agrees and acknowledges that he or she is
under no obligation to make an Investment Election in any particular JIF mutual
fund, and, if no such Investment Election is made, that the balance in the
Account shall be deposited into the Janus Money Market Fund.

         5. Limitation of Liability. To the maximum extent permitted by law, the
Company shall have no duty, liability or responsibility (i) to advise with
respect to, or inquire as to the propriety of, any Investment Election, or (ii)
for any liabilities, losses, expenses or claims related to, arising from, or
caused by Investment Elections made by the Executive. Executive hereby releases,
and agrees to indemnify and hold harmless the Company, its subsidiaries and
affiliates, and their respective agents, representatives, officers, directors,
employees, successors, assigns and insurers, hereinafter referred to
collectively as "the Released Parties," from any and all liability, losses, tax
consequences, claims, demands or actions or causes of action whatsoever, whether
foreseen or unforeseen, directly related to, arising from, or caused by
Investment Elections made by the Executive or the terms of this Agreement. This
release and agreement shall be binding upon Executive, his or her heirs,
successors, assigns, administrators and executors.

         6. No Enlargement of Executive Rights. Nothing in this Agreement shall
be construed to confer upon Executive any right to continued employment with
Company, or to restrict in any way the right of Company to terminate his or her
employment.

         7. Successors. This Agreement is personal to the Executive and without
the prior written consent of the Company shall not be assignable by the
Executive otherwise than by will or the laws of descent and distribution. This
Agreement shall inure to the benefit of and be enforceable by the Company and
its successors and assigns.

                                       2
<PAGE>

         8. Miscellaneous.

            (a) This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware without reference to principles of
conflict of laws. The captions of this Agreement are not part of the provisions
hereof and shall have no force or effect, This Agreement may not be amended or
modified otherwise than by a written agreement executed by the parties hereto or
their respective successors and legal representatives.

            (b) All payments to Executive under this Agreement are subject to
and conditioned upon satisfaction of all applicable tax withholding
requirements. The Executive agrees to use his or her best efforts to ensure
satisfaction of all such withholding requirements, and shall execute all
documents and take all action reasonably deemed necessary by the Company to
ensure compliance with all such withholding requirements.

            (c) The Executive's or the Company's failure to insist upon strict
compliance with any provision of this Agreement or the failure to assert any
right the Executive or the Company may have hereunder shall not be deemed to be
a waiver of such provision or right or any other provision or right of this
Agreement.

            (d) From and after the Effective Date, this Agreement shall
supersede any other conflicting term(s) under any agreement between the parties
with respect to the subject matter hereof (including, without limitation, the
Original Agreement and/or the Bonus Plan), except as expressly provided herein.

            (e) In the event of any dispute relating to or arising from this
Agreement, the party substantially prevailing shall recover from the other party
its costs, including reasonable attorneys' fees.

            (f) All disputes relating to or arising from this Agreement shall be
tried only in the state or federal courts situated in the Denver, Colorado
metropolitan area.

            (g) For convenience, this Agreement may be executed in any number of
identical counterparts, each of which shall be deemed a complete original in
itself and may be introduced in evidence or used for any other purpose without
the production of any other counterparts.

                                    EXECUTIVE

                                    /s/ Robin Beery
                                    -------------------------------------------

                                    JANUS CAPITAL GROUP INC.

                                    By:/s/ Gregory A. Frost
                                    Title: Vice President and Controller

                                       3

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