EXHIBIT 99.2
                                                                   ------------

                                                                 EXECUTION COPY


                                    SCHEDULE
                                     TO THE
                              ISDA MASTER AGREEMENT
                            DATED AS OF MAY 28, 2004

                                     BETWEEN

                          DEUTSCHE BANK AG ("PARTY A")

                                       AND

             CHESAPEAKE EXPLORATION LIMITED PARTNERSHIP ("PARTY B")


PART  1. TERMINATION PROVISIONS.

(a)      "SPECIFIED ENTITY" means:

         (i) in relation to Party A:

                  Section 3(c):             Party A's Affiliates
                  Otherwise:                Not Applicable

         (ii) in relation to Party B: Party B's Affiliates

(b)      "SPECIFIED  TRANSACTION" will have the meaning specified in Section 14
         of this Agreement.

(c)      The "CROSS DEFAULT"  provisions of Section  5(a)(vi) will apply to both
         parties subject to amendment by adding at the end thereof the following
         words:

         "PROVIDED  that,  notwithstanding  the  foregoing,  an Event of Default
         shall not occur  under  either  clause  (1) or (2) above if (A) (I) the
         default,  or other similar event or condition referred to in clause (1)
         or the failure to pay  referred to in clause (2) is a failure to pay or
         deliver  caused  by  an  error  or  omission  of an  administrative  or
         operational  nature,  and (II) funds or the asset to be delivered  were
         available  to such party to enable it to make the  relevant  payment or
         delivery  when due and (III) such  payment or  delivery  is made within
         three Local Business Days  following  receipt of written notice from an
         interested party of such failure to pay or such failure to deliver,  or
         (B) such party was precluded  from paying,  or was unable to pay, using
         reasonable means,  through the office of the party through which it was
         acting for purposes of the relevant Specified  Indebtedness,  by reason
         of force majeure, act of State, illegality or impossibility."

         For such purposes:

              "SPECIFIED INDEBTEDNESS" means any obligation (whether present or
         future,  contingent  or  otherwise)  in respect of (i) borrowed  money
         (other than  indebtedness in respect of bank deposits  received in the
         ordinary course of business) and (ii) Financial  Market  Transactions.
         For  purposes  herein,   "FINANCIAL  MARKET   TRANSACTIONS"  mean  any
         transaction of a type specified in clause (a) or (b) of the definition
         of  "Specified  Transaction"  which is entered into between such party
         and an entity  other than the other  party to this  Agreement,  or any
         Credit  Support  Provider or Specified  Entity of such party.  For the
         purposes of determining whether the Threshold Amount has been exceeded
         in  respect  of  any  Financial   Market   Transaction,   the  portion
         attributable to Financial Market Transactions shall be the amount owed
         and not paid or delivered when due (whether on any regularly scheduled
         payment or delivery  date, on early  termination  or otherwise) to the
         other  party  under  the  terms  relating  to  such  Financial  Market
         Transaction.

                  With  regard to Party A,  "THRESHOLD  AMOUNT"  means 1% of its
         shareholders'  equity  (as  calculated  in  accordance  with  generally
         accepted accounting principles applicable to Party A).

                  With  regard to Party B, any  applicable  Specified  Entity of
         Party B or any Credit Support  Provider of Party B, "THRESHOLD  AMOUNT"
         means:

         (x)      at any time when the  shareholders'  equity of the Company (as
                  calculated in accordance  with generally  accepted  accounting
                  principles   applicable   to  the  Company)  is  greater  than
                  U.S.$1,650,000,000, U.S.$25,000,000; and

         (y)      at any  other  time,  1% of the  shareholders'  equity  of the
                  Company (as so calculated).




(d)      The "CREDIT  EVENT UPON  MERGER"  provisions  of Section  5(b)(v) will
         apply to both parties.

(e)      The "AUTOMATIC EARLY  TERMINATION"  provisions of Section 6(a) will not
         apply to Party A and will not apply to Party B.

(f)      "TERMINATION CURRENCY" means Dollars.

(g)      "ADDITIONAL  TERMINATION  EVENT"  will  not  apply  to  Party  A.  Each
         Additional Termination Event set forth in Part 6 below or in the Credit
         Support  Annex  will  apply  to  Party  B  (and,  for  such  Additional
         Termination Events, Party B shall be the sole Affected Party).

PART 2.  TAX REPRESENTATIONS.

(a)      PAYER  REPRESENTATIONS.  For  the  purposes  of  Section  3(e)  of this
         Agreement,  Party A and Party B each make the following representations
         to the other:

         It is not required by any  applicable  law, as modified by the practice
         of  any  relevant  governmental  revenue  authority,  of  any  Relevant
         Jurisdiction  to make any deduction or withholding for or on account of
         any Tax from any payment  (other than  interest  under  Section 9(h) of
         this  Agreement)  to be  made  by it to  the  other  party  under  this
         Agreement. In making this representation, each party may rely on:

         (i)      the  accuracy of any  representations  made by the other party
                  pursuant to Section 3(f) of this Agreement;

         (ii)     the satisfaction of the agreement of the other party contained
                  in Section  4(a)(i) or  4(a)(iii)  of this  Agreement  and the
                  accuracy and  effectiveness  of any  document  provided by the
                  other party  pursuant to Section  4(a)(i) or 4(a)(iii) of this
                  Agreement; and

         (iii)    the satisfaction of the agreement of the other party contained
                  in Section 4(d) of this Agreement,

         except  that it will  not be a  breach  of  this  representation  where
         reliance  is placed on clause (ii) and the other party does not deliver
         a form or  document  under  Section  4(a)(iii)  by reason  of  material
         prejudice to its legal or commercial position.

(b)      PAYEE  REPRESENTATIONS.  For  the  purpose  of  Section  3(f)  of  this
         Agreement:

         (1)      Party A makes the following representations:--

                  (A)    It is a  "foreign  person"  within  the  meaning of the
                         applicable    United   States   Treasury    Regulations
                         concerning information reporting and backup withholding
                         tax (as in effect on January 1, 2001),  unless  Party A
                         provides written notice to Party B that it is no longer
                         a foreign  person.  In respect of each  Transaction  it
                         enters into through an office or discretionary agent in
                         the United  States or which  otherwise is allocated for
                         United  States  federal  income  tax  purposes  to such
                         United States trade or business,  each payment received
                         or to be received by it under such  Transaction will be
                         effectively  connected  with its  conduct of a trade or
                         business in the United States.

                  (B)    In  respect  of  all  Transactions  (other  than  those
                         described in (A) above),  no payment  received or to be
                         received by it in  connection  with this  Agreement  is
                         attributable  to a trade or  business  carried on by it
                         through a permanent establishment in the United States.

         (2)      Party B makes the following representations:--

                  It is a U.S. person,  and it is a limited  partnership that is
                  the  beneficial  owner of all  payments to be made to it under
                  this  Agreement,  organized  under  the  laws of the  State of
                  Oklahoma,   and  its   taxpayer   identification   number   is
                  73-1384282.
                                        2


PART 3.  AGREEMENT TO DELIVER DOCUMENTS.

(a)      For the purpose of Section  4(a)(i) of this  Agreement, the  documents
         to be delivered are:--



PARTY REQUIRED TO      FORM/DOCUMENT/                    DATE BY WHICH                    COVERED BY
DELIVER DOCUMENT       CERTIFICATE                       TO BE DELIVERED                  SECTION 3(d)
                                                                                          REPRESENTATION
                                                                                 
Party A                An executed United States         (i) Upon execution of this       No
                       Internal Revenue Service          Agreement; (ii) promptly
                       Form W-8ECI (or any               upon reasonable demand by
                       successor thereto) and an         Party B; and
                       executed United States            (iii) promptly upon
                       Internal Revenue Service          learning that any such form
                       Form W-8BEN (or any               previously provided by
                       successor thereto).               Party A has become obsolete
                                                         or incorrect.

Party B                An executed United States         (i) Upon execution of this       No
                       Internal Revenue Service W-9      Agreement; (ii) promptly
                       (or any successor thereto).       upon reasonable demand by
                                                         Party  A;  and  (iii)
                                                         promptly upon learning that
                                                         any such form previously
                                                         provided  by  Party B
                                                         has  become  obsolete
                                                         or incorrect.


(b)      For the  purpose  of  Section  4(a)(ii)  of this  Agreement,  the other
         documents to be delivered (which will be covered by the  representation
         in Section 3(d) of the Agreement if specified) are as follows:--

                                       3




PARTY REQUIRED TO        FORM/DOCUMENT/                      DATE BY WHICH                     COVERED BY
DELIVER DOCUMENT         CERTIFICATE                         TO BE DELIVERED                   SECTION 3(d)
                                                                                               REPRESENTATION
                                                                                      
Party A and Party B      Evidence of the authority,          Upon or prior to the              Yes
                         incumbency and specimen             execution and delivery of
                         signature of each person            this Agreement and, with
                         executing this Agreement or         respect to any Confirmation,
                         any Confirmation, Credit            upon request by the other
                         Support Document or other           party.
                         document entered into in
                         connection with this Agreement
                         on its behalf or on behalf of
                         a Credit Support Provider or
                         otherwise, as the case may be.

Party A and Party B      A copy of the most recent           Promptly after request by         Yes
                         annual report containing            the other party.
                         consolidated financial
                         statements of (in the case of
                         Party A) Party A and (in the
                         case of Party B) the Company,
                         and such other public
                         information respecting the
                         condition or operations,
                         financial or otherwise of such
                         Person, as the other party may
                         reasonably request from time
                         to time.

Party B                  A copy of the resolution of         Upon execution of this            Yes
                         Party B's board of directors        Agreement
                         (or other managers of such
                         entity) approving the entering
                         into of this Agreement and the
                         Transactions hereunder and a
                         board resolution delegating
                         the powers to named
                         individuals to enter into any
                         Transactions under this
                         Agreement.  Party B shall also
                         deliver to Party A a copy of
                         its constituent documents,
                         each certified by an
                         appropriately authorized
                         officer of Party B to the
                         effect that such documents are
                         up to date and in full force
                         and effect and that Party A
                         may continue to rely thereon.

Party B                  A duly executed and delivered       Upon execution of this            Yes
                         copy of each Credit Support         Agreement and from time to
                         Document.                           time thereafter as required
                                                             under Part 6 below

Party B                  A copy of the resolution of         Upon execution of this
                         each Credit Support Provider's      Agreement and from time to        Yes
                         board of directors (or other        time thereafter as required
                         managers of such entity)            under Part 6 below
                         approving the entering into of
                         the applicable Credit Support
                         Document and a copy of each
                         Credit Support Provider's
                         constituent documents, each
                         certified by an appropriately
                         authorized officer of the
                         Credit Support Provider to the
                         effect that such documents are
                         up to date and in full force
                         and effect and that Party A
                         may continue to rely thereon.

Party B                  Each other document required        From time to time as              Yes, unless otherwise
                         under Part 6 below                  required under Part 6 below       expressly stated in
                                                                                               Part 6 below


                                       4


PART 4.  MISCELLANEOUS.

(a)      ADDRESSES  FOR  NOTICES.  For the  purpose  of  Section  12(a)  of this
         Agreement,  the addresses for notices and communications to Party A and
         Party B shall be as follows:--

         TO PARTY A:

         All notices to Party A under  Section 5 or 6 of this  Agreement  (other
         than notices under Section 5(a)(i)) shall be sent to:

         Deutsche Bank AG, Head Office
         Taunusanlage 12
         60262 Frankfurt
         GERMANY
         Attention:  Legal Department

         Fax No:           0049 69 910 36097

         With copies to:

         Deutsche Bank AG, New York Branch
         60 Wall Street
         New York, NY  10005
         Attention:  Legal Department

         Fax No:           212 250 4566

         Deutsche Bank AG, New York Branch
         60 Wall Street
         New York, NY  10005
         Attention:  Brad Blesie

         Fax No:           212 797 4469

         Deutsche Bank Securities Inc.
         60 Wall Street
         New York, NY  10005
         Attention:  Brad Blesie

         Fax No:           212 797 4469

         All other notices to Party A shall be sent to:
         Deutsche Bank AG, New York Branch
         60 Wall Street
         New York, NY  10005
         Attention:  Brad Blesie

         Fax No:           212 797 4469

         With a copy to:

         Deutsche Bank Securities Inc.
         60 Wall Street
         New York, NY  10005
         Attention:  Brad Blesie

         Fax No:           212 797 4469

                                       5

         TO PARTY B:

         With respect to Confirmations and payments:

         Chesapeake Exploration Limited Partnership
         6100 N. Western Avenue
         Oklahoma City, OK  73118
         Attention:  Cash Manager

         Fax No:           405 879 9576

         All other notices to Party B shall be sent to:

         Chesapeake Exploration Limited Partnership
         6100 N. Western Avenue
         Oklahoma City, OK  73118
         Attention:  Treasurer

         Fax No:           405 879 9587

(b)      PROCESS AGENT. For the purpose of Section 13(c) of this Agreement:--

         Party A appoints as its Process Agent: Not applicable.

         Party B appoints as its Process Agent: Not applicable.

(c)      OFFICES. The provisions of Section 10(a) will apply to this Agreement.

(d)      MULTIBRANCH   PARTY.   For  the  purpose  of  Section  10(b)  of  this
         Agreement:--

         Party A is a Multibranch Party and may act through any of the following
         Offices:--

                  Its New  York,  London,  Tokyo,  Paris,  Singapore,  Brussels,
                  Sydney,  Amsterdam,  Vienna, Canada (Toronto), and New Zealand
                  (Auckland) Branches and its Frankfurt Head Office.

         Party B is not a Multibranch Party.

(e)      CALCULATION AGENT. The Calculation Agent shall be Party A.

(f)      CREDIT SUPPORT DOCUMENTS.

         (i)      "CREDIT SUPPORT DOCUMENTS" means in relation to Party A: None.

         (ii)     "CREDIT SUPPORT  DOCUMENTS" means in relation to Party B: Each
                  of the  documents  stated to be a Credit  Support  Document in
                  Part 6 below.

(g)      CREDIT SUPPORT PROVIDER.

         (i)      "CREDIT SUPPORT PROVIDER" means in relation to Party A: None.

         (ii)     "CREDIT  SUPPORT  PROVIDER" means in relation to Party B: Each
                  of the Persons stated to be a Credit Support  Provider in Part
                  6 below.

(h)      GOVERNING LAW. This Agreement is governed by, and will be construed and
         enforced in accordance with, the laws of the State of New York (without
         reference to its choice of law doctrine).

(i)      NETTING OF PAYMENTS. "Multiple Transaction Payment Netting" will apply.

(j)      ABSENCE OF LITIGATION. For the purpose of Section 3(c):

         (i)  "SPECIFIED  ENTITY"  means  in  relation  to Party  A:  Party  A's
              Affiliates.

         (ii)  "SPECIFIED  ENTITY"  means in  relation  to Party  B:  Party  B's
               Affiliates.

(k)      NO AGENCY. The provisions of Section 3(g) will apply to this Agreement.

                                       6


(l)      ADDITIONAL  REPRESENTATION  will apply. For the purpose of Section 3 of
         this  Agreement,  each of the following  will  constitute an Additional
         Representation:--

         (i)      RELATIONSHIP  BETWEEN  PARTIES.  Each  party will be deemed to
                  represent  to the  other  party on the date on which it enters
                  into a Transaction  that (absent a written  agreement  between
                  the parties that expressly imposes affirmative  obligations to
                  the contrary for that Transaction):--

                  (1)      NON-RELIANCE.  It is acting for its own account,  and
                           it has made its own  independent  decisions  to enter
                           into  that   Transaction   and  as  to  whether  that
                           Transaction  is  appropriate  or proper  for it based
                           upon its own  judgment  and  upon  advice  from  such
                           advisers  as it  has  deemed  necessary.  It  is  not
                           relying on any communication (written or oral) of the
                           other   party   as   investment   advice   or   as  a
                           recommendation  to enter  into that  Transaction,  it
                           being  understood that  information and  explanations
                           related to the terms and  conditions of a Transaction
                           will  not  be  considered   investment  advice  or  a
                           recommendation  to enter  into that  Transaction.  No
                           communication  (written  or oral)  received  from the
                           other  party  will be  deemed to be an  assurance  or
                           guarantee  as  to  the   expected   results  of  that
                           Transaction.

                  (2)      ASSESSMENT  AND  UNDERSTANDING.   It  is  capable  of
                           assessing the merits of and understanding (on its own
                           behalf or through independent  professional  advice),
                           and  understands and accepts,  the terms,  conditions
                           and risks of that Transaction.  It is also capable of
                           assuming, and assumes, the risks of that Transaction.

                  (3)      STATUS OF PARTIES. The other party is not acting as a
                           fiduciary  for or an adviser to it in respect of that
                           Transaction.

         (ii)     COMMODITY  EXCHANGE  ACT.  Each party  represents to the other
                  party on and as of the date hereof and on each date on which a
                  Transaction is entered into between them that:

                  (1)      each  Transaction  is intended to be exempt from,  or
                           otherwise  not  subject  to  regulation   under,  the
                           Commodity Exchange Act; and

                  (2)      such  party  is an  "eligible  contract  participant"
                           within the  meaning of the  Commodity  Exchange  Act,
                           Section 1a(12).

         (iii)    ADDITIONAL  REPRESENTATIONS  OF PARTY B. Party B represents to
                  Party A on and as of the date  hereof  and at all times  until
                  the termination of this Agreement that:

                  (1)      with respect to each source of funds to be used by it
                           to enter into such  Transactions  (each  such  source
                           being  referred to herein as a "SOURCE"),  the Source
                           is not the  assets  of any  "plan"  (as such  term is
                           defined in Section 4975 of the Internal  Revenue Code
                           of 1986, as amended (the "CODE"))  subject to Section
                           4975 of the Code or any  "employee  benefit plan" (as
                           such term is defined in Section  3(3) of the employee
                           Retirement  Income  Security Act of 1974,  as amended
                           ("ERISA"))  subject to Title I of ERISA, or otherwise
                           out of "plan  assets"  within  the  meaning of United
                           States Department of Labor regulation ss. 2510.3-101,
                           29CFR ss. 2510-3-101; and

                  (2)      each  Transaction  is intended to be exempt from,  or
                           otherwise  not  subject  to  regulation   under,  the
                           Investment  Company Act of 1940 and Party B is exempt
                           from regulation under such Act.

                                       7


         (iv)     ADDITIONAL REPRESENTATIONS OF PARTY B. The representations and
                  warranties  set forth in  Section 4 of the  Credit  Agreement,
                  together with related definitions and ancillary provisions and
                  schedules  and  exhibits,  are hereby  incorporated  herein by
                  reference,  as if set forth herein in full,  MUTATIS MUTANDIS;
                  PROVIDED  that,  as  incorporated  herein  (unless the context
                  otherwise requires):

                  (1)      each  reference  therein  to "this  Agreement",  "the
                           Revolving  Loans",  "the  Letters  of Credit" or "the
                           Revolving Commitments" or the like shall be deemed to
                           be a reference to this Agreement and the Transactions
                           hereunder, as the case may be;

                  (2)      each reference therein to any "Agent" or any "Lender"
                           or the like  shall be  deemed  to be a  reference  to
                           Party A hereunder;

                  (3)      each reference therein to the "Loan Documents" or the
                           like shall be deemed to be a reference to the Secured
                           Trading Line Documents; and

                  (4)      each  reference  therein to the  "Collateral"  or the
                           like  shall  be  deemed  to  be a  reference  to  the
                           Collateral as defined herein.

                  Party B represents to Party A on and as of the date hereof and
                  on each date on which a  Transaction  is entered  into between
                  them that:

                  (1)      Party B and each Credit Support  Provider is Solvent;
                           and

                  (2)      each representation and warranty set forth in Section
                           4  of  the  Credit   Agreement  (as  incorporated  by
                           reference  above)  is true and  correct  on and as of
                           such date as if made as of such date.

(m)      RECORDING OF CONVERSATIONS. Each party (i) consents to the recording of
         telephone  conversations  between  the  trading,  marketing  and  other
         relevant personnel of it and any personnel employed by any Affiliate or
         any third party acting on its behalf in connection  with this Agreement
         or any  potential  Transaction,  (ii)  agrees to obtain  any  necessary
         consent of, and give any  necessary  notice of such  recording to, such
         persons and (iii) agrees,  to the extent  permitted by applicable  law,
         that recordings may be submitted in evidence in any Proceedings.

                                       8


PART 5.  OTHER PROVISIONS

(a)      ESCROW.  On any  date on  which  both  parties  are  required  to make
         payments  hereunder,  either  party may at its  option and in its sole
         discretion notify the other party that payments on that date are to be
         made in escrow.  In this case  deposit of the  payment  due earlier on
         that date will be made by 2.00 p.m.  (local  time at the place for the
         earlier  payment if there is a time  difference  between the cities in
         which  payments  are to be made) on that  date  with an  escrow  agent
         selected by the party giving the notice and  reasonably  acceptable to
         the other party,  accompanied by irrevocable payment  instructions (a)
         to release  the  deposited  payment  to the  intended  recipient  upon
         receipt  by  the  escrow  agent  of  the   required   deposit  of  the
         corresponding   payment   from  the  other  party  on  the  same  date
         accompanied by irrevocable payment  instructions to the same effect or
         (b) if the required deposit of the  corresponding  payment is not made
         on that same date,  to return the payment  deposited to the party that
         paid it into escrow at such party's request.  The party that elects to
         have  payments  made in  escrow  will  pay  the  costs  of the  escrow
         arrangements  and will cause those  arrangements  to provide  that the
         intended  recipient of the payment due to be  deposited  first will be
         entitled  to interest  on that  deposited  payment for each day in the
         period of its deposit at the rate offered by the escrow agent for that
         day for  overnight  deposits  in the  relevant  currency in the office
         where it holds that  deposited  payment  (at 11.00 a.m.  local time on
         that day) if that payment is not  released by 5.00 p.m.  local time on
         the date it is  deposited  for any  reason  other  than  the  intended
         recipient's  failure to make the escrow deposit it is required to make
         hereunder in a timely fashion.

(b)      TAX PROVISIONS.

         (i)      The  definition  of "Tax  Event",  in  Section  5(b)(iii),  is
                  modified by adding the following at the end thereof:

                  "PROVIDED  that for  purposes  of  clarification,  the parties
                  acknowledge  that the  introduction or proposal of legislation
                  will not, in and of itself,  give rise to a presumption that a
                  Tax Event has occurred."

         (ii)     The definition of the term  "Indemnifiable  Tax" is amended by
                  adding the following at the end thereof:

                  "Notwithstanding the foregoing, "Indemnifiable Tax" also means
                  any Tax imposed in respect of a payment  under this  Agreement
                  by  reason of a Change  in Tax Law by a  government  or taxing
                  authority of a Relevant  Jurisdiction of the party making such
                  payment,  unless the other party is  incorporated,  organized,
                  managed and  controlled or considered to have its seat in such
                  jurisdiction,  or is acting  for  purposes  of this  Agreement
                  through a branch or office located in such jurisdiction."

(c)      SET OFF.  Section  6(f) of this  Agreement  is deleted in its entirety
         and replaced with the following:

         "(f)     Upon the  designation  of any Early  Termination  Date,  the
                  party that is not the  Defaulting  Party or  Affected  Party
                  ("X")  may,  without  prior  notice  to  the  Defaulting  or
                  Affected Party ("Y"), set off any sum or obligation (whether
                  or not  arising  under this  Agreement,  whether  matured or
                  unmatured, whether or not contingent and irrespective of the
                  currency,  place of payment or booking  office of the sum or
                  obligation) owed by Y to X or any Affiliate of X (the "X SET
                  OFF AMOUNT")  against any sum or obligation  (whether or not
                  arising under this Agreement,  whether matured or unmatured,
                  whether or not contingent and  irrespective of the currency,
                  place of payment or booking office of the sum or obligation)
                  owed  by X or  any  Affiliate  of X to Y  (the  "Y  SET  OFF
                  AMOUNT").  X will give  notice to the other party of any set
                  off effected under this Section 6(f).

                  For this purpose, either the X Set Off Amount or the Y Set Off
                  Amount (or the  relevant  portion of such set off amounts) may
                  be converted by X into the currency in which the other set off
                  amount is denominated at the rate of exchange at which X would
                  be able,  acting in a reasonable  manner and in good faith, to
                  purchase the relevant amount of such currency.

                  If a sum or obligation is  unascertained,  X may in good faith
                  estimate  that  obligation  and  set-off  in  respect  of  the
                  estimate,  subject to the  relevant  party  accounting  to the
                  other when the obligation is ascertained.

                                       9


                  Nothing in this  Section  6(f) will be  effective  to create a
                  charge or other security  interest.  This Section 6(f) will be
                  without  prejudice  and in  addition  to any right of set-off,
                  combination  of  accounts,  lien or other  rights to which any
                  party is at any time otherwise  entitled (whether by operation
                  of law, contract or otherwise).

                  Notwithstanding the foregoing provisions of this Section 6(f),
                  obligations  owing under the Credit  Agreement  may not be set
                  off hereunder against obligations owing under this Agreement."

(d) ADDITIONAL ACKNOWLEDGMENTS AND AGREEMENTS OF THE PARTIES.

         (i)      BANKRUPTCY CODE. Without limiting the applicability, if any,
                  of any  other  provision  of the  U.S.  Bankruptcy  Code  as
                  amended (the  "BANKRUPTCY  CODE")  (including  Sections 362,
                  546, 556, and 560 thereof and the applicable  definitions in
                  Section 101 thereof), the parties acknowledge and agree that
                  all  Transactions  entered into  hereunder  will  constitute
                  "forward  contracts"  or "swap  agreements"  as  defined  in
                  Section 101 of the Bankruptcy Code or "commodity  contracts"
                  as defined in Section 761 of the Bankruptcy  Code,  that the
                  rights of the parties under Section 6 of this Agreement will
                  constitute  contractual  rights to  liquidate  Transactions,
                  that any margin or  collateral  provided  under any  margin,
                  collateral,  security,  pledge, or similar agreement related
                  hereto  will  constitute  a "margin  payment"  as defined in
                  Section 101 of the Bankruptcy Code, and that the parties are
                  entities  entitled  to the  rights  under,  and  protections
                  afforded  by,  Sections  362,  546,  556,  and  560  of  the
                  Bankruptcy Code.

         (ii)     WAIVER OF RIGHT TO TRIAL BY JURY.  Each of the parties  hereby
                  irrevocably  waives  any and all right to a trial by jury with
                  respect to any legal proceeding  arising out of or relating to
                  this Agreement or any Transaction.

(e)      AMENDMENTS.  Section 9(b) of this Agreement is modified by the deletion
         of the words "or  confirmed by an exchange of telexes or by an exchange
         of electronic messages on an electronic messaging system".

(f)      COUNTERPARTS  AND  CONFIRMATIONS.  Section 9(e)(i) of this Agreement is
         modified  by the  deletion  of the words "and by  electronic  messaging
         system".

(g)      DISCLOSURE.  Each party consents to the  communication or disclosure by
         the other  party of  information  in  respect  of or  relating  to this
         Agreement  and  any  Transactions   hereunder  to  such  other  party's
         branches,  subsidiaries  and Affiliates  and, to the extent required by
         law or regulation, any government or regulatory authority.

PART 6.  SPECIFIED NATURAL GAS PROVISIONS

(a)      PRELIMINARY  STATEMENTS.  Party B wishes to enter into certain  natural
         gas  derivative  transactions  with  Party A from time to time to hedge
         certain volumes of natural gas production of Party B and certain of its
         Affiliates,  and Party A has agreed to provide commercially  reasonable
         pricing  to Party B for such  transactions,  all on and  subject to the
         terms and conditions set forth herein.  To induce Party A to enter into
         this Agreement, Party B has agreed to provide credit support to Party A
         in the form of  mortgages,  guaranties  and other  security  documents.
         Accordingly,  Party  A and  Party  B  hereby  agree  to the  terms  and
         conditions set forth in this Part 6.

(b)      CERTAIN  DEFINITIONS.  Certain  terms used in this  Agreement  have the
         meanings  assigned  to them in clause  (u)  below.  An index of certain
         defined  terms and the page  numbers on which such terms are defined is
         attached as Annex A to this Agreement.

(c)      SCOPE OF MASTER AGREEMENT.  This Agreement shall apply to all Specified
         Natural Gas Transactions  entered into between Party A and Party B, and
         shall not apply to any other Transactions  entered into between Party A
         and Party B.

                                       10


(d)      CERTAIN   CONDITIONS   FOR   ENTERING   INTO   SPECIFIED   NATURAL  GAS
         TRANSACTIONS.  The parties acknowledge and agree that Party A and Party
         B may enter into Specified  Natural Gas Transactions with each other at
         any time and from time to time  during the  Trading  Period (if each of
         Party A and Party B mutually agree in their sole  discretion to do so),
         PROVIDED that each of the following conditions are satisfied both prior
         to and after giving effect to such Transaction:

         (1)      Natural Gas PFE is less than or equal to Available Capacity;

         (2)      the Reserve  Collateral  Ratio is greater than or equal to the
                  Minimum Reserve Collateral Ratio;

         (3)      the Volume Limitations are not exceeded;

         (4)      each  representation of Party B set forth herein is true and
                  correct on such date as if made on and  as of such date; and

         (5)      no Event of Default or Potential Event of Default has occurred
                  and is then continuing,

         and each entry into a  Specified  Natural  Gas  Transaction  by Party B
         hereunder shall be deemed to be a certification by Party B that each of
         the foregoing conditions is satisfied.  Party A agrees that all pricing
         it provides for Specified Natural Gas Transactions  shall be determined
         by it in a commercially reasonable manner.

         Party A and Party B agree not to enter into any Transaction  under this
         Agreement  that includes a swap that,  evaluated in isolation  from any
         other components of such Transaction  (including options,  other swaps,
         floors,  collars and the like),  is not based on "costless" swap prices
         prevailing at the time of such Transaction. For the avoidance of doubt,
         it is understood  that Party B may from time to time request Party A to
         enter  into one or more  Transactions  under this  Agreement  with swap
         prices above or below the "costless" swap prices prevailing at the time
         such  Transaction  is entered into and if such  adjustment to such swap
         prices results from an embedded option (sold or purchased)  included in
         such   Transaction   then  such   Transactions   (and   other   similar
         transactions) are expressly permitted under this Agreement.

(e)      VOLUNTARY TERMINATION. Upon not less than 60 days' prior written notice
         to Party A, Party B may (if in its sole  discretion it elects to do so)
         terminate the Trading Period (and,  accordingly,  terminate the ability
         of the parties to enter into further Specified Natural Gas Transactions
         hereunder  and the  obligations  of  Party A under  clause  (d)  above)
         without  any  penalty  or  other  damage   payment  to  Party  A  (such
         termination,  the  "VOLUNTARY  TRADING  PERIOD  TERMINATION",  and  the
         effective  date of such  termination,  the  "VOLUNTARY  TRADING  PERIOD
         TERMINATION DATE"), PROVIDED that:

         (1)      Party  B shall  pay to Party A the Breakage Fee (if any) in
                  accordance with clause (f)(2) below; and

         (2)      such Voluntary Trading Period Termination shall not affect the
                  rights  or  obligations  of  Party  A or  Party  B  under  any
                  Specified  Natural Gas Transactions  then  outstanding,  which
                  Transactions shall continue to be governed by all of the terms
                  and  conditions  set  forth in this  Agreement  and the  other
                  Secured Trading Line Documents.

(f)      SECURED  TRADING  LINE  FEES.  Party B hereby  agrees to pay to Party A
         the following fees:

         (1)      FACILITY  FEES.  On  each   Calculation  Date  (including  the
                  Effective  Date),  Party B shall pay to Party A a facility fee
                  (the "FACILITY FEES") in an amount equal to:

                  (x)    Maximum Total Capacity (or, if such Calculation Date is
                         on or after the Voluntary  Trading  Period  Termination
                         Date,  the  Natural  Gas  PFE  as of the  later  of the
                         Voluntary Trading Period  Termination Date and the most
                         recent   Quarter  End  Date   falling   prior  to  such
                         Calculation Date); MULTIPLIED BY

                  (y)    0.30%,

                  PROVIDED  that payment of Breakage Fees under clause (2) below
                  on or  prior to the  Calculation  Date in 2005  shall  relieve
                  Party  B of  its  obligation  to  pay  Facility  Fees  on  the
                  Calculation  Date in 2005  (but not on any  other  Calculation
                  Date).

                                       11

         (2)      BREAKAGE FEE. If the Voluntary Trading Period Termination Date
                  occurs on or prior to the  Calculation  Date in 2005,  then on
                  the Voluntary  Trading Period  Termination  Date Party B shall
                  pay to Party A a fee (the  "BREAKAGE  FEE") in an amount equal
                  to U.S.$1,800,000.

         (3)      EXPOSURE FEES. On the second Local Business Day following each
                  Exposure Fee Accrual  Period,  Party B shall pay to Party A an
                  exposure fee (the "EXPOSURE FEES") in an amount equal to:

                  (x)    the Daily Average Natural Gas Mark-to-Market Amount for
                         such Exposure Fee Accrual Period; MULTIPLIED BY

                  (y)    1.00% MULTIPLIED BY the number of days in such Exposure
                         Fee Accrual  Period  DIVIDED BY 365 (or 366 in the case
                         of a leap year).

                  As used herein:

                           "DAILY  AVERAGE  NATURAL GAS  MARK-TO-MARKET  AMOUNT"
                  means, for any Exposure Fee Accrual Period,  the average,  for
                  each Local  Business  Day during  such  Exposure  Fee  Accrual
                  Period,  of the greater of (1) the Natural Gas  Mark-to-Market
                  Amount for such Local Business Day and (2) zero.

                           "EXPOSURE  FEE ACCRUAL  PERIOD"  means each  calendar
                  quarter  ending on the  Quarter End Dates,  PROVIDED  that the
                  first such  period  will begin on the  Effective  Date and the
                  last such period will end on the Facility Termination Date.

                           "QUARTER END DATE" means the last day of March, June,
                  September and December in each year.

         (4)      REFUND  IF NOT  FULLY  SYNDICATED.  If,  as of the  90th day
                  following the Effective Date:

                  (x)    Syndicated Capacity is less than U.S.$400,000,000; and

                  (y)    no Event of Default or  Potential  Event of Default has
                         occurred  and either (A)  continued  for a period of at
                         least 10 days; or (B) is then continuing,

                  then on such date Party A shall pay to party B an amount equal
                  to (I) the amount of Facility  Fees paid by Party B to Party A
                  on the  Effective  Date  MULTIPLIED  BY (II)  U.S.$400,000,000
                  MINUS  Syndicated  Capacity  as of such date  DIVIDED BY (III)
                  U.S.$600,000,000.

         (5)      FEES NON-REFUNDABLE. Subject to clause (4) above, all Facility
                  Fees,   Breakage  Fees  and  Exposure  Fees,  once  paid,  are
                  non-refundable.

(g)      VOLUME  LIMITATIONS.  Party B hereby  agrees  that it shall not (and it
         shall not  permit  any  other  CHK  Company  to)  enter  into,  or have
         outstanding,  any  Natural  Gas Hedges  other than  Natural  Gas Hedges
         entered into with the purpose and effect of hedging price or basis risk
         on  natural  gas  expected  to be  produced  and  attributable  to  the
         interests of the CHK Companies, PROVIDED that at all times:

         (1)      no Price Hedge has, or fixes a price for, a term including any
                  month later than 60 months from  the date such Price Hedge is
                  entered into;

         (2)      the Net Volume for all Price  Hedges  for each  single  future
                  month (determined,  in the case of Natural Gas Hedges that are
                  not  settled  on  a  monthly  basis,  by a  monthly  proration
                  acceptable  to Party A) is  greater  than or equal to zero and
                  less than or equal to the Specified Production for such month;

         (3)      the Net Basis  Position  for all Basis  Hedges for each single
                  future  month  (determined,  in the case of Natural Gas Hedges
                  that  are  not  settled  on a  monthly  basis,  by  a  monthly
                  proration  acceptable  to Party A) is greater than or equal to
                  zero and less than or equal to the  Specified  Production  for
                  such month;

         (4)      the Net  Contract  Volume  for all  Price  Hedges  under  this
                  Agreement  for each single  future month  (determined,  in the
                  case of Natural  Gas Hedges  that are not settled on a monthly
                  basis,  by a  monthly  proration  acceptable  to  Party  A) is
                  greater  than or equal  to zero and less  than or equal to the
                  Specified Production for such month; and

         (5)      the Net  Contract  Basis  Position  for all Basis Hedges under
                  this  Agreement for each single future month  (determined,  in
                  the case of  Natural  Gas  Hedges  that are not  settled  on a
                  monthly basis, by a monthly  proration  acceptable to Party A)
                  is greater than or equal to zero and less than or equal to the
                  Specified Production for such month.

                                       12


         The restrictions set forth in this clause (g) are referred to herein as
         the "VOLUME LIMITATIONS".

         Party B hereby agrees to deliver to Party A, within five Local Business
         Days  after the end of each  calendar  quarter  ending in March,  June,
         September and December,  commencing with June 2004, a report (a "VOLUME
         REPORT") setting forth in reasonable  detail the volumes of natural gas
         covered by each Natural Gas Hedge to which each CHK Company is a party,
         broken out  monthly  and  separately  identifying  volumes for each CHK
         Company for such  month,  volumes  for Long Price  Hedges,  Short Price
         Hedges,  Long Basis  Hedges and Short Basis Hedges for such month (each
         broken out for Natural Gas Hedges under this  Agreement and Natural Gas
         Hedges not under this  Agreement)  and volumes of Specified  Production
         for such month, all in form,  scope and detail  satisfactory to Party A
         and setting forth such supporting detail as Party A may request.

         Each Volume Report shall be accompanied by a certificate of a Financial
         Officer  of Party B (with  such  certification  under no  circumstances
         conflicting with any similar certificate  provided by Party B or any of
         its  Affiliates to other  parties  under any credit  agreement or other
         financing  arrangement)  stating  that (x) the  information  set  forth
         therein is true and  correct on and as of the date on which such Volume
         Report is  delivered  and (y) the  Budget  Basis  Projected  Production
         reported  therein is based on  reasonable  estimates,  information  and
         assumptions  and that such  Financial  Officer has no reason to believe
         that such Budget Basis Projected  Production is incorrect or misleading
         in any material respect.

         As used herein:

                  "BASIS  HEDGE"  means each  Natural Gas Hedge that hedges only
         basis differential risk. A Basis Hedge is referred to herein as a "LONG
         BASIS HEDGE" if a CHK Company would benefit from an increase in natural
         gas basis  differentials  thereunder  and as a "SHORT BASIS HEDGE" if a
         CHK  Company  would  benefit  from a  decrease  in  natural  gas  basis
         differentials  thereunder.  For such  purposes,  the term  "NATURAL GAS
         BASIS  DIFFERENTIALS"  will be determined by the  Calculation  Agent in
         accordance with recognized industry practices.

                  "PRICE HEDGE" means each Natural Gas Hedge (other than a Basis
         Hedge).  A Price Hedge is referred to herein as a "LONG PRICE HEDGE" if
         a CHK  Company  would  benefit  from an  increase in natural gas prices
         thereunder  and as a "SHORT PRICE HEDGE" if a CHK Company would benefit
         from a decrease in natural gas prices thereunder.

                  "NATURAL GAS HEDGE" means (a) any  agreement  (including  each
         confirmation  entered  into  under a master  agreement)  providing  for
         options,  swaps,  floors,  caps,  collars,  forward  sales  or  forward
         purchases involving natural gas or natural gas prices, volumes or basis
         differentials,  or  indexes  based  on any of the  foregoing,  (b)  any
         natural gas option,  futures or forward contract traded on an exchange,
         and (c) any other  derivative  agreement or other similar  agreement or
         arrangement  covering or referencing natural gas or natural gas prices,
         volumes or basis differentials.

                                       13


                  "NET BASIS POSITION"  means,  for each month as at any date of
         determination, an amount (which may be less than zero) equal to:

                  (x)      the aggregate  notional quantity or volume of natural
                           gas for that month under all outstanding  Short Basis
                           Hedges; MINUS

                  (y)      the aggregate  notional quantity or volume of natural
                           gas for that month under all  outstanding  Long Basis
                           Hedges.

                  "NET CONTRACT BASIS POSITION"  means, for each month as at any
         date of  determination,  an amount  (which may be less than zero) equal
         to:

                  (x)      the aggregate  notional quantity or volume of natural
                           gas for that month under all outstanding  Short Basis
                           Hedges under this Agreement; MINUS

                  (y)      the aggregate  notional quantity or volume of natural
                           gas for that month under all  outstanding  Long Basis
                           Hedges under this Agreement.

                  "NET  VOLUME"  means,  for  each  month  as  at  any  date  of
         determination, an amount (which may be less than zero) equal to:

                  (x)      the aggregate  notional quantity or volume of natural
                           gas for that month under all outstanding  Short Price
                           Hedges; MINUS

                  (y)      the aggregate  notional quantity or volume of natural
                           gas for that month under all  outstanding  Long Price
                           Hedges.

                  "NET CONTRACT  VOLUME" means, for each month as at any date of
         determination, an amount (which may be less than zero) equal to:

                  (x)      the aggregate  notional quantity or volume of natural
                           gas for that month under all outstanding  Short Price
                           Hedges under this Agreement; MINUS

                  (y)      the aggregate  notional quantity or volume of natural
                           gas for that month under all  outstanding  Long Price
                           Hedges under this Agreement.

                  "SPECIFIED PRODUCTION" means, for each month as at any date of
         determination:

                  (x)      if such month is or is prior to the 36th month  after
                           the month in which such  determination is being made,
                           100% of Budget Basis Projected  Production  projected
                           to be produced during such month, and

                  (y)      if such month is later than the 36th month  after the
                           month in which such determination is being made, 100%
                           of Adjusted SPE Projected  Production projected to be
                           produced during such month.

                                       14


                  For such purposes:

                   "ADJUSTED SPE PROJECTED  PRODUCTION"  means,  for any
         month, the sum of:

                           (A)      SPE  Basis  Projected  Production  for  such
                                    month  attributable to reserves that are, at
                                    the  time of  determination,  classified  as
                                    Producing Reserves; PLUS

                           (B)      25% of SPE Basis  Projected  Production  for
                                    such month  attributable  to Proved Reserves
                                    that are not, at the time of  determination,
                                    classified as Producing Reserves.

                           "BUDGET BASIS  PROJECTED  PRODUCTION"  means,  at any
                  time of determination, the projected production of natural gas
                  (measured by volume unit or BTU  equivalent,  not sales price)
                  from  properties and interests  owned by any CHK Company which
                  are located in or offshore of the United States and Canada, as
                  such  production  is  projected  in the  most  recent  reports
                  delivered by Party B pursuant to this  Agreement  for purposes
                  of  management   planning  and  budgeting,   determined  after
                  deducting   projected   production   from  any  properties  or
                  interests  sold or  under  contract  for  sale  that  had been
                  included in such report and after adding projected  production
                  from any properties or interests acquired or under contract to
                  be acquired by any CHK Company that had not been  reflected in
                  such report, all as reported by Party B to Party A hereunder.

                           "SPE BASIS PROJECTED  PRODUCTION"  means, at any time
                  of  determination,  the  projected  production  of natural gas
                  (measured by volume unit or BTU  equivalent,  not sales price)
                  from  properties and interests  owned by any CHK Company which
                  are  located in or  offshore  of the United  States and Canada
                  attributable  to the portion of the  reserves  categorized  as
                  Proved,  as such  production  is  projected in the most recent
                  Reserve Reports  delivered  pursuant to this Agreement,  after
                  deducting   projected   production   from  any  properties  or
                  interests  sold or  under  contract  for  sale  that  had been
                  included in such report and after adding projected  production
                  from any properties or interests acquired or under contract to
                  be acquired by any CHK Company that had not been  reflected in
                  such report, all as reported by Party B to Party A hereunder.

(h)      CERTAIN CONDITIONS PRECEDENT.  No Specified Natural Gas Transaction may
         be entered  into,  and the  obligations  of Party A under clause (d) of
         this Part 6 shall not become effective, until the date on which Party A
         shall have received each of the following,  each  satisfactory to it in
         form and substance:

         (1)      EXECUTED COUNTERPARTS. From each party hereto a counterpart of
                  this  Agreement  (including the Schedule to this Agreement and
                  the Credit Support Annex) signed on behalf of such party.

         (2)      PART 3 DOCUMENTS.  Each document referred to in Part 3 that is
                  required to be delivered upon execution of this Agreement.

         (3)      OPINION  OF COUNSEL TO PARTY B. A  favorable  written  opinion
                  (addressed  to  Party  A and  dated  the  Effective  Date)  of
                  Commercial Law Group, P.C., counsel for Party B and the Credit
                  Support  Providers,  substantially in the form of Exhibit A to
                  this  Agreement,  and covering such other matters  relating to
                  Party B, the Credit Support  Providers,  this  Agreement,  the
                  other  Secured  Trading  Line  Documents  or the  transactions
                  contemplated  hereby  and  thereby  as Party A may  reasonably
                  request (and Party B and each Credit Support  Provider  hereby
                  instruct such counsel to deliver such opinion to Party A).

         (4)      CORPORATE  AND  PARTNERSHIP  DOCUMENTS.   Such  documents  and
                  certificates as Party A may reasonably request relating to the
                  organization,  existence  and good  standing  of Party B, each
                  Credit Support Provider and of Party B's general partner,  the
                  authorization of the transactions  contemplated hereby and any
                  other legal matters relating to Party B and the Credit Support
                  Providers and Party B's general partner,  this Agreement,  the
                  other  Secured  Trading  Line  Documents  or the  transactions
                  contemplated  hereby and  thereby,  all in form and  substance
                  satisfactory to Party A.

                                       15


         (5)      OFFICER'S CERTIFICATE. A certificate, dated the Effective Date
                  and signed by a Financial  Officer of Party B or the President
                  or a Vice President of Party B's general  partner,  acting for
                  and on behalf of Party B, confirming that each  representation
                  of Party B set forth  herein is true and  correct on such date
                  as if made on and as of such date and that no Event of Default
                  or  Potential  Event  of  Default  has  occurred  and is  then
                  continuing.

         (6)      GUARANTY.  The  Guaranty,  duly  executed and delivered by the
                  Company,  each  Subsidiary of the Company  (other than Party B
                  and members of the CEMI Group) and Party A.

         (7)      UCC,  TAX LIEN,  JUDGMENT  AND  LITIGATION  SEARCHES.  Reports
                  satisfactory  to  Party  A  listing  the  results  of  Uniform
                  Commercial  Code filing,  tax lien,  judgment  and  litigation
                  searches prepared by one or more firms satisfactory to Party A
                  with  respect  to Party B and each of the  mortgagors  in each
                  jurisdiction  in which it  maintains  its  principal  place of
                  business  or in  which  any of the  Mortgaged  Properties  are
                  located.

         (8)      MORTGAGES.   One  or  more  Mortgages   encumbering   Eligible
                  Properties  of  Party  B and  one or  more  of the  other  CHK
                  Companies  (the  "INITIAL  RESERVE  COLLATERAL"),   each  duly
                  executed and  delivered by Party B or another  initial  Credit
                  Support  Provider  and  in  recordable  form  in  each  of the
                  jurisdictions  where  Mortgaged  Properties  covered  by  such
                  Mortgage  are located  and having  attached  thereto  property
                  descriptions  that are in form and substance  satisfactory  to
                  Party A.

         (9)      FILINGS,   REGISTRATIONS   AND   RECORDINGS.   Each   document
                  (including any Uniform  Commercial  Code financing  statement)
                  required  by the  Credit  Support  Documents  or under  law or
                  reasonably  requested  by Party A to be filed,  registered  or
                  recorded  in order to create  in favor of Party A a  perfected
                  Lien on the collateral  described therein,  prior and superior
                  in right to any other Person (other than with respect to liens
                  expressly permitted  hereunder),  and each such document shall
                  be in proper form for filing,  registration or recordation. In
                  addition,  Party B shall have taken such other action as Party
                  A shall  have  requested  in order  to  perfect  the  security
                  interests created under the Mortgages.

         (10)     TITLE ASSURANCE.  Such information regarding the title of each
                  mortgagor to the Mortgaged  Properties and the priority of the
                  Lien of the  Mortgage  as Party A may request  (including,  if
                  requested by Party A, title  opinions of counsel  satisfactory
                  to Party A with respect to Mortgaged  Properties  representing
                  not more than 50% of the Forward Value of the Initial  Reserve
                  Collateral stating that such mortgagor has good and defensible
                  title to such  Mortgaged  Properties,  free  and  clear of all
                  Liens other than Liens  permitted by the Mortgages and subject
                  only to such title defects as shall be acceptable to Party A).

         (11)     OPINIONS  OF  LOCAL  COUNSEL.   A  favorable  written  opinion
                  (addressed to Party A and dated the Effective  Date),  in form
                  and substance and rendered by counsel satisfactory to Party A,
                  of  counsel  for  Party B and  the  Credit  Support  Providers
                  licensed  to  practice  law in each State in which the Initial
                  Reserve  Collateral is located as to, among other things,  the
                  execution,  delivery,  recordation and  enforceability of each
                  initial  Mortgage  in such State (and Party B and each  Credit
                  Support  Provider hereby instruct such counsel to deliver such
                  opinion to Party A).

         (12)     INSURANCE.  Certificates of insurance evidencing the existence
                  of all insurance required to be maintained by Party B pursuant
                  to  the  terms  of  this   Part  6,  in  form  and   substance
                  satisfactory  to  Party  A. In  addition,  Party B shall  have
                  delivered  a  certificate,  dated  the  Effective  Date,  of a
                  Financial  Officer  of Party B  setting  forth  the  insurance
                  obtained by it in  accordance  with the  requirements  of this
                  Part 6 and stating  that such  insurance  is in full force and
                  effect and that all premiums then due and payable thereon have
                  been paid.

         (13)     ENVIRONMENTAL DUE DILIGENCE. Results of such environmental due
                  diligence  regarding  the  properties  to be  covered  by  the
                  Mortgages referred to in clause (8) above as may be reasonably
                  requested by Party A, the results of which due diligence shall
                  be satisfactory to Party A.

                                       16


         (14)     RESERVE REPORTS.  Copies of the most recent reserve reports of
                  Lee Keeling and  Associates,  Ryder Scott Company,  Netherland
                  Sewell and  Associates  and the Company's  employee  engineers
                  (the "INITIAL  RESERVE  REPORTS"),  each dated such dates, and
                  otherwise in form and substance,  satisfactory to Party A, and
                  certified  by a Financial  Officer of Party B to be a true and
                  correct copy thereof.

         (15)     INITIAL  RESERVE  COLLATERAL.  Evidence that, on the Effective
                  Date, the Forward Value of the Initial  Reserve  Collateral as
                  of the Calculation Date in 2005, as projected in good faith by
                  the Calculation Agent, is not less than U.S.$900,000,000.

         (16)     SOLVENCY.  A  Solvency  Certificate  of Party B and each other
                  initial  Credit  Support  Provider  dated as of the  Effective
                  Date.

         (17)     FEES.  The  initial  Facility  Fee and  such  other  fees  and
                  expenses  as Party B shall  have  agreed  to pay to Party A in
                  connection   herewith,   including  the  reasonable  fees  and
                  expenses  of  Milbank,  Tweed,  Hadley & McCloy  LLP,  special
                  counsel  to  Party  A, in  connection  with  the  negotiation,
                  preparation,  execution and delivery of this Agreement and the
                  other Secured Trading Line Documents.

         (18)     CREDIT AGREEMENT DOCUMENTS. Copies of the Credit Agreement and
                  each other "Loan Document" referred to therein (to the extent,
                  in the case of security  documents,  reasonably  requested  by
                  Party A), in form and  substance  satisfactory  to Party A and
                  certified as true, correct and complete by a Financial Officer
                  of Party B.

         (19)     OTHER   DOCUMENTS.   Such  other  documents  as  Party  A  may
                  reasonably request.

(i)      RESERVE REPORTS.

         (1)      RESERVE REPORTING. Party B hereby agrees to deliver to Party A
                  the following reserve reports and other information:

                  (w)    ANNUAL REPORTS.  Promptly following (but in any event
                         not later  than 90 days  after)  December  31 in each
                         year (commencing with December 31, 2004), copies of:

                           (A)      One or more  reserve  reports as of December
                                    31 from Lee  Keeling and  Associates,  Ryder
                                    Scott   Company,   Netherland   Sewell   and
                                    Associates   and/or  any  other   recognized
                                    independent   reservoir   engineering  firms
                                    reasonably  acceptable to Party A (each,  an
                                    "INDEPENDENT RESERVOIR ENGINEERING REPORT").
                                    Such   Independent   Reservoir   Engineering
                                    Reports shall evaluate not less than (i) 70%
                                    of all  reserve  volumes  of Party B and the
                                    other  CHK  Companies  and  (ii)  80% of all
                                    Reserve     Collateral    reserve    volumes
                                    attributable to the properties and interests
                                    of Party B and the  other  mortgagors  under
                                    the Mortgages.

                           (B)      A reserve report as of December 31 certified
                                    by an  appropriately  authorized  officer of
                                    Party  B  (and  subject  to  the  review  of
                                    internal reservoir engineers for Party A) (a
                                    "SUPPLEMENTAL    RESERVE   REPORT").    Each
                                    Supplemental   Reserve  Report  shall  cover
                                    those properties and reserves of Party B and
                                    the other CHK Companies not evaluated in the
                                    Independent  Reservoir  Engineering  Reports
                                    delivered pursuant to clause (A) above.

                                       17

                  (x)    SEMI-ANNUAL  UPDATES.  Promptly  following  (but in any
                         event no later than 60 days after) June 30 in each year
                         (commencing  with June 30, 2004, a reserve report as of
                         such June 30 certified by an  appropriately  authorized
                         officer  of  Party  B (and  subject  to the  review  of
                         internal reservoir  engineers for Party A) (an "UPDATED
                         RESERVOIR   ENGINEERING   REPORT")   for   all  of  the
                         properties  and  reserves  of Party B and the other CHK
                         Companies.

                  (y)    ACCOMPANYING  INFORMATION.  Party  B  shall  deliver  a
                         report to Party A, at the time it delivers  the reports
                         under  clauses  (w)  and  (x)  above,   reflecting  the
                         occurrence  of the  following  events since the date of
                         the most recent Reserve Reports:  (I) all properties or
                         interests sold, transferred,  terminated,  abandoned or
                         under contract for sale,  transfer or termination  that
                         had been included in such report, together (in the case
                         of completed or pending  sales or  transfers)  with the
                         property  and sale price  therefor;  (II) all  property
                         purchases and pending property  purchases  (unless such
                         disclosure  will violate a  confidentiality  agreement)
                         identifying   the  property  and  the  purchase   price
                         therefor,  and (III) all changes in the  categories  of
                         Proved Developed Producing  Reserves,  Proved Developed
                         Nonproducing  Reserves and Proved Undeveloped  Reserves
                         attributable  to each  Mortgaged  Property  interest of
                         Party B and the other CHK Companies.

                  (z)    ADDITIONAL INFORMATION. In addition, Party B shall from
                         time to time deliver to Party A all other  information,
                         reports  and  data  which  Party  A  has  requested  in
                         connection with the Reserve Reports.

                  As used herein,  "RESERVE  REPORT"  means,  collectively,  the
                  Independent  Reservoir  Engineering  Reports, the Supplemental
                  Reserve Reports and the Updated Reservoir Engineering Reports.

         (2)      SCOPE OF RESERVE  REPORTS.  Each Reserve Report (not including
                  the Initial Reserve  Reports) shall be addressed to (among any
                  other  Persons) Party A, shall be accompanied by a certificate
                  of a  Financial  Officer  of Party B to the  effect  that such
                  Reserve  Report  is a true and  correct  copy  thereof,  shall
                  contain information comparable to the information contained in
                  the  reports  delivered  on the  Effective  Date under  clause
                  (h)(14) above and otherwise be in form and scope  satisfactory
                  to Party A in its sole discretion, shall take into account any
                  "over-produced" status under gas balancing arrangements, shall
                  clearly   delineate   each   property   evaluated   and  shall
                  distinguish   those   properties   that   constitute   Reserve
                  Collateral  from  those  properties  that  do  not  constitute
                  Reserve  Collateral.  Without  limiting  the  foregoing,  each
                  Reserve Report shall contain:

                  (x)    for each covered property interest owned by Party B and
                         the other  CHK  Companies,  (A)  Proved  Reserves,  (2)
                         Proved  Developed   Producing   Reserves,   (3)  Proved
                         Developed   Non-Producing   Reserves   and  (4)  Proved
                         Undeveloped  Reserves (each, a "CATEGORY OF RESERVES"),
                         in each case, to the extent properly  allocable to such
                         property interest;

                  (y)    for each covered property interest owned by Party B and
                         the  other  CHK  Companies  for each  year  during  the
                         remaining   commercial   operation   period   for  such
                         property,   (1)  the  projected  volume  of  production
                         attributable   to  each   category  of  reserves,   (2)
                         projected gross cash operating  revenues to be received
                         from  production   attributable  to  each  category  of
                         reserves and (3) projected  net operating  income to be
                         earned from production attributable to each category of
                         reserves,   in  each  case,  to  the  extent   properly
                         allocable to such property interest; and

                  (z)    without limiting clauses (x) and (y) above,  sufficient
                         information  to  enable  Party B to meet the  reporting
                         requirements  concerning oil and gas reserves contained
                         in Regulations  S-K and S-X and to ascertain  projected
                         future  production  attributable  to the portion of the
                         reserves of the  Mortgaged  Properties  categorized  as
                         Producing.

                  In determining  such projected  gross cash operating  revenues
                  and projected net operating income,  each Reserve Report shall
                  use price  assumptions  set forth in Regulations  S-K and S-X,
                  PROVIDED  that,  upon  request of Party A, Party B shall cause
                  projected  gross cash  operating  revenues and  projected  net
                  operating  income to be  determined  using  price  assumptions
                  specified by Party A.
                                       17


(j)      COLLATERAL  RAMP-UP;  ADDITIONAL  POST-CLOSING  TITLE  WORK; ADDITIONAL
         CALCULATION DATE RESERVE COLLATERAL.

         (1)      COLLATERAL  RAMP-UP.  Party  B  shall,  at its  own  cost  and
                  expense,  promptly (and in any event by no later than 90 days)
                  after the Effective Date:

                  (x)    execute and deliver one or more  Mortgages  encumbering
                         Eligible  Properties having Proved Developed  Producing
                         Reserves attributed thereto such that the Forward Value
                         of  the  Reserve  Collateral   (including  the  Initial
                         Reserve  Collateral  and the  collateral  pledged under
                         this clause (j)(1)),  as projected in good faith by the
                         Calculation Agent, is not less than the Minimum Reserve
                         Collateral Ratio MULTIPLIED BY Maximum Total Capacity;

                  (y)    in  connection  with such  Mortgages;  take the related
                         actions required under clause (o) below; and

                  (z)    to the extent not delivered to Party A on the Effective
                         Date pursuant to clause (h)(10) above, deliver to Party
                         A  such   information   regarding  the  title  of  each
                         mortgagor to the Mortgaged  Properties and the priority
                         of the  Lien of the  Mortgage  as  Party A may  request
                         (including,  if requested by Party A, title opinions of
                         counsel  satisfactory  to  Party A  stating  that  such
                         mortgagor  has  good  and  defensible   title  to  such
                         Mortgaged Properties, free and clear of all Liens other
                         than Liens  permitted by the Mortgages and subject only
                         to such title  defects as shall be  acceptable to Party
                         A).

         (2)      ESTIMATE OF CALCULATION DATE NATURAL GAS PFE. By no later than
                  the date (a  "PRE-CALCULATION  DATE") that is 60 days prior to
                  each  Calculation  Date falling after the Effective  Date, the
                  Calculation    Agent    shall   give    written    notice   (a
                  "PRE-CALCULATION DATE COLLATERAL NOTICE") to Party A and Party
                  B setting forth:

                  (w)    the  Calculation   Agent's  good  faith  projection  of
                         Natural  Gas PFE as of such  Calculation  Date  and the
                         Forward Reserve Collateral Value as of such Calculation
                         Date;

                  (x)    the ratio (the "ESTIMATED RESERVE COLLATERAL RATIO") of
                         such Forward Reserve Collateral Value to such projected
                         Natural Gas PFE;

                  (y)    if such Estimated Reserve Collateral Ratio is less than
                         the Minimum Reserve Collateral Ratio, the Forward Value
                         of additional  Proved Developed  Producing  Reserves of
                         Eligible  Properties  that will need to be  pledged  to
                         Party A so that the Estimated Reserve  Collateral Ratio
                         (determined   taking  into  account   such   additional
                         collateral) is equal to the Minimum Reserve  Collateral
                         Ratio (a "DEFICIENCY AMOUNT"); and

                  (z)    the  Forward  Value  of  additional   Proved  Developed
                         Producing  Reserves  of  Eligible  Properties  (if any)
                         that,  if pledged to Party A, would result in Available
                         Capacity  being  equal to Maximum  Total  Capacity  (an
                         "OPTIONAL   AMOUNT"),   it  being  understood  that  no
                         properties  are  required  to be  pledged  to  Party  A
                         pursuant to this clause (z).

                  If the Pre-Calculation  Date Collateral Notice with respect to
                  any Calculation Date specifies a Deficiency Amount, then Party
                  B shall,  at its own cost and  expense,  promptly  (and in any
                  event by no later than three Local Business Days prior to such
                  Calculation  Date)  execute and deliver one or more  Mortgages
                  encumbering   Eligible   Properties  having  Proved  Developed
                  Producing  Reserves  attributed  thereto  having an  aggregate
                  Forward  Value  equal to such  Deficiency  Amount and take the
                  related actions required under clause (o) below.

                  In addition,  if the  Pre-Calculation  Date Collateral  Notice
                  with  respect to any  Calculation  Date  specifies an Optional
                  Amount,  then Party B may (if in its sole discretion it elects
                  to do so),  at its own  cost and  expense,  on or prior to the
                  date three Local Business Days prior to such  Calculation Date
                  execute and deliver one or more Mortgages encumbering Eligible
                  Properties   having  Proved   Developed   Producing   Reserves
                  attributed  thereto having an aggregate Forward Value equal to
                  such  Optional  Amount and take the related  actions  required
                  under clause (o) below.

                  For purposes of this clause (2), determinations of the Forward
                  Reserve  Collateral  Value and  Forward  Value will be made on
                  each  Pre-Calculation  Date,  but  will  be  made  as if  such
                  determinations  were in  fact  being  made on the  immediately
                  following  Calculation  Date.  Accordingly,  references in the
                  definitions of "Forward Reserve Collateral Value" and "Forward
                  Value" to a "date of determination" will mean such Calculation
                  Date rather than such Pre-Calculation Date.

                                       18


         (3)      RECALCULATION  OF  CALCULATION  DATE  NATURAL GAS PFE. On each
                  Calculation  Date,  the  Calculation  Agent shall give written
                  notice (a "CALCULATION DATE COLLATERAL NOTICE") to Party A and
                  Party B setting forth:

                  (w)    the Natural Gas PFE as of such Calculation Date and the
                         Forward Reserve  Collateral  Value  (determined  taking
                         into account the additional collateral (if any) pledged
                         under clause (2) above) as of such Calculation Date;

                  (x)    the ratio (the "ACTUAL  RESERVE  COLLATERAL  RATIO") of
                         such Forward Reserve  Collateral  Value to such Natural
                         Gas PFE;

                  (y)    if such Actual  Reserve  Collateral  Ratio is less than
                         the Minimum Reserve Collateral Ratio:

                         (I)  the Forward Value of additional  Proved  Developed
                              Producing  Reserves  of Eligible  Properties  that
                              will  need to be  pledged  to  Party A so that the
                              Actual Reserve Collateral Ratio (determined taking
                              into account such additional  collateral) is equal
                              to the Minimum Reserve  Collateral  Ratio (also, a
                              "DEFICIENCY AMOUNT"); and

                         (II) such  Deficiency  Amount  DIVIDED  BY the  Minimum
                              Reserve  Collateral  Ratio (the  "CASH  DEFICIENCY
                              AMOUNT"); and

                  (z)    the  Forward  Value  of  additional   Proved  Developed
                         Producing  Reserves  of  Eligible  Properties  (if any)
                         that,  if pledged to Party A, would result in Available
                         Capacity being equal to Maximum Total  Capacity  (also,
                         an  "OPTIONAL  AMOUNT"),  it being  understood  that no
                         properties  are  required  to be  pledged  to  Party  A
                         pursuant to this clause (z).

                  If the Calculation Date Collateral  Notice with respect to any
                  Calculation Date specifies a Deficiency  Amount,  then Party B
                  shall, at its own cost and expense:

                  (A)    promptly  (and in any event  within one Local  Business
                         Day after  such  Calculation  Date)  deliver to Party A
                         Cash  or  Letters  of  Credit  pursuant  to the  Credit
                         Support  Annex having an  aggregate  Value equal to the
                         Cash  Deficiency  Amount  (such  Cash  and  Letters  of
                         Credit, "TEMPORARY RESERVE COLLATERAL"); and

                  (B)    within 60 days after such Calculation Date, execute and
                         deliver  one or  more  Mortgages  encumbering  Eligible
                         Properties having Proved Developed  Producing  Reserves
                         attributed  thereto  having an aggregate  Forward Value
                         equal to such  Deficiency  Amount and take the  related
                         actions  required  under  clause  (o) below  (whereupon
                         Party A shall return such Temporary Reserve  Collateral
                         to Party B in  accordance  with the  terms set forth in
                         the Credit Support Annex).

                  In addition,  if the Calculation  Date Collateral  Notice with
                  respect to any Calculation  Date specifies an Optional Amount,
                  then  Party B may (if in its sole  discretion  it elects to do
                  so), at its own cost and expense, on or prior to the date that
                  is 60 days after such  Calculation  Date,  execute and deliver
                  one or more Mortgages  encumbering  Eligible Properties having
                  Proved Developed  Producing Reserves attributed thereto having
                  an aggregate  Forward Value equal to such Optional  Amount and
                  take the related actions required under clause (o) below.

                                       19


(k)      ADDITIONAL  INTRA-YEAR  COLLATERAL.  If  on  any  date  (other  than  a
         Calculation  Date) (x) the  Reserve  Collateral  Ratio is less than the
         Minimum  Reserve  Collateral  Ratio and (y) the  Intra-Year  Deficiency
         Amount  exceeds  U.S.$10,000,000,  then,  upon  request from Party A to
         Party B, Party B shall,  at its own cost and expense,  promptly (and in
         any event within one Local Business Day after the date of such request)
         deliver  to Party A Cash or Letters  of Credit  pursuant  to the Credit
         Support  Annex  having  an  aggregate  Value  equal to such  Intra-Year
         Deficiency  Amount. The Cash and Letters of Credit delivered to Party A
         pursuant  to  this  clause  (k)  are  referred  to as  the  "INTRA-YEAR
         COLLATERAL".

                  As used herein:

                  "INTRA-YEAR  DETERMINATION  DATE" means each date on which the
         conditions  set forth in clauses  (x) and (y) above in this  clause (k)
         are satisfied.

                  "INTRA-YEAR  DEFICIENCY  AMOUNT"  means,  as of  any  date  of
         determination, the positive difference (if any) of:

         (1)      (A) if the Natural Gas  Mark-to-Market  Amount as of such date
                  is a positive number, the Natural Gas Mark-to-Market Amount or
                  (B) otherwise, the Intra-Year Natural Gas PFE as of such date;
                  MINUS

         (2)      the Current Reserve  Collateral  Value as of such date DIVIDED
                  BY the Minimum Reserve Collateral Ratio.

(l)      SUBSTITUTION OF COLLATERAL.  Party B shall be entitled (at its own cost
         and expense) at any time and from time to time to substitute all or any
         part of the Reserve  Collateral  for other Reserve  Collateral of equal
         Forward Value, PROVIDED that:

         (1)      no Event of Default or Potential  Event of Default  shall have
                  occurred and then be continuing or shall result therefrom;

         (2)      after giving effect thereto,  the Reserve  Collateral Ratio is
                  not less than the Minimum Reserve Collateral Ratio;

         (3)      the long-term  ratings of the Company are not lower than "Ba3"
                  by Moody's or "BB-" by  Standard & Poor's and are not on watch
                  for possible downgrade by either such rating agency;

         (4)      the aggregate Forward Value of Reserve Collateral  substituted
                  in any  Transaction  Year shall not  exceed  15% of  Available
                  Capacity;

         (5)      Reserve  Collateral shall not be substituted  pursuant to this
                  clause (l) more than three times in any Transaction Year; and

         (6)      for any new Reserve Collateral to be pledged by Party B, Party
                  B shall take the related  actions  required  under  clause (o)
                  below.

                                       20

(m) COLLATERAL CALL.

         (1)      If requested  by Party B on any Local  Business  Day,  Party A
                  shall return some or all of the Intra-Year Collateral to Party
                  B in  accordance  with the terms set forth  herein  and in the
                  Credit Support Annex, PROVIDED that:

                  (x)    such day is not an Intra-Year Determination Date;

                  (y)    the aggregate Value of Intra-Year  Collateral  returned
                         to Party B on any Local  Business Day will  (subject to
                         the rounding and minimum  transfer  amount terms of the
                         Credit Support Annex) equal an amount (the  "INTRA-YEAR
                         EXCESS  AMOUNT" for such Local  Business  Day) equal to
                         the positive difference (if any) of:

                         (A)  the Current  Reserve  Collateral  Value as of such
                              date  DIVIDED BY the  Minimum  Reserve  Collateral
                              Ratio; MINUS

                         (B)  (I) if the Natural Gas Mark-to-Market Amount as of
                              such date is a positive  number,  the  Natural Gas
                              Mark-to-Market  Amount  or  (II)  otherwise,   the
                              Intra-Year Natural Gas PFE as of such date; and

                  (z)    no Event of Default or Potential Event of Default shall
                         have  occurred and then be  continuing  or shall result
                         therefrom.

         (2)      If  requested  by Party B within  three  Local  Business  Days
                  following any Calculation  Date,  Party A shall release one or
                  more  Mortgaged  Properties  from the Lien of the Mortgages in
                  accordance  with the  terms  set  forth  herein  and  therein,
                  PROVIDED in each case that:

                  (x)    after giving  effect  thereto,  the Reserve  Collateral
                         Ratio is not less than the Minimum  Reserve  Collateral
                         Ratio; and

                  (y)    no Event of Default or Potential Event of Default shall
                         have  occurred and then be  continuing  or shall result
                         therefrom.

(n)      CHK COMPANY  MORTGAGES.  Party B will be entitled to deliver  Mortgages
         executed  and  delivered  by one or more  of the  other  CHK  Companies
         (rather than by Party B) under clauses  (j)(1),  (j)(2),  (j)(3)(B) and
         (l) above, PROVIDED that:

         (1)      each  such CHK  Company  is  Solvent  on and as of the date on
                  which it executes and delivers such Mortgage,  and Party B and
                  such CHK Company each deliver a Solvency  Certificate to Party
                  A with  respect to such CHK Company at the time such  Mortgage
                  is delivered;

         (2)      such CHK Company is not then an Unrestricted Subsidiary;

         (3)      if such CHK  Company  is not then a Credit  Support  Provider,
                  such  CHK  Company   executes  and  delivers  to  Party  A  an
                  Assumption and Accession Agreement  (whereupon it shall become
                  a Credit Support Provider of Party B hereunder); and

         (4)      Party B shall take,  and shall cause such CHK Company to take,
                  the related actions required under clause (o) below.

(o)      OTHER REQUIRED ACTIONS.  In connection with each delivery of a Mortgage
         or pledge of additional  Reserve  Collateral,  Party B shall, and shall
         cause each relevant CHK Company to:

         (1)      execute and deliver  documents with respect to Party B or such
                  CHK  Company,   such  Mortgage  and  the  relevant   Mortgaged
                  Properties  (in each case as  applicable)  that are consistent
                  with the  documents  delivered  pursuant to clauses (2),  (3),
                  (4), (5), (7), (8), (9), (10),  (11),  (13),  (17) and (19) of
                  clause (h) of this Part 6 on the Effective Date;

         (2)      if such CHK  Company  is not then a Credit  Support  Provider,
                  deliver an Assumption  and Accession  Agreement  duly executed
                  and delivered by such CHK Company; and

         (3)      take such other action  (including  executing  and  delivering
                  such Uniform Commercial Code financing statements) as shall be
                  necessary to create and perfect  valid and  enforceable  first
                  priority  Liens on the  property  to be  pledged by Party B or
                  such CHK Company  under such  Mortgage or with respect to such
                  additional Reserve Collateral.

                                       21


(p)      ADDITIONAL COVENANTS. Party B covenants and agrees, for the benefit of
         Party A, to:

         (1)      deliver  to Party A all of the  statements,  certificates  and
                  other  information  delivered  to any  lender  or agent  under
                  Sections  6.1,  6.2,  6.7,  6.8(c)  and  6.8(d) of the  Credit
                  Agreement;

         (2)      perform,  comply  with and be bound by each of its  covenants,
                  agreements  and  obligations  contained in Sections 6 and 7 of
                  the Credit Agreement (other than those subsections referred to
                  in clause (1) above); and

         (3)      notify Party A of each amendment,  modification and supplement
                  to, and waiver of any provision  under,  the Credit  Agreement
                  and the other "Loan Documents" referred to therein.

         Without limiting the generality of the foregoing, the provisions of the
         Credit Agreement referred to in clause (2) above, together with related
         definitions  and ancillary  provisions and schedules and exhibits,  are
         hereby  incorporated  herein by  reference,  as if set forth  herein in
         full, MUTATIS MUTANDIS;  PROVIDED that, as incorporated  herein (unless
         the context otherwise requires):

         (i)      each  reference  therein to "this  Agreement",  "the Revolving
                  Loans", "the Letters of Credit" or "the Revolving Commitments"
                  or  the  like  shall  be  deemed  to be a  reference  to  this
                  Agreement and the Transactions hereunder, as the case may be;

         (ii)     each  reference  therein to any "Agent" or any "Lender" or the
                  like shall be deemed to be a reference to Party A hereunder;

         (iii)    each  reference  therein to the "Loan  Documents"  or the like
                  shall be deemed to be a reference to the Secured  Trading Line
                  Documents; and

         (iv)     each reference  therein to the  "Collateral" or the like shall
                  be deemed  to be a  reference  to the  Collateral  as  defined
                  herein.

(q)      SUBSIDIARY GUARANTORS.  Party B shall at all time cause each Subsidiary
         of the Company  that is not an  Unrestricted  Subsidiary  under the CHK
         Indentures  to be a  Subsidiary  Guarantor  under  the  Guaranty  (and,
         accordingly,  a Credit Support Provider of Party B hereunder).  Without
         limiting the foregoing,  if any Subsidiary is created or acquired after
         the Effective Date by any CHK Company  (other than any such  Subsidiary
         that  is then  designated  an  Unrestricted  Subsidiary  under  the CHK
         Indentures,  but which,  for the  purposes of this  clause  (q),  shall
         include  any  existing  Subsidiary  that  ceases to be an  Unrestricted
         Subsidiary under the CHK Indentures), promptly cause such Subsidiary to
         become a Subsidiary Guarantor under the Guaranty (and,  accordingly,  a
         Credit Support Provider of Party B hereunder), and to take such actions
         and execute and deliver to Party A such  documents with respect to such
         Subsidiary  that are  consistent  with the actions  taken and documents
         delivered  with respect to Party B pursuant to clauses (2),  (3),  (4),
         (5),  (7),  (16),  (17) and (19) of  clause  (h) of this  Part 6 on the
         Effective Date.

         Notwithstanding  anything to the  contrary  contained  herein or in any
         other Secured  Trading Line  Document,  if, after the  Effective  Date,
         Party B shall designate a Subsidiary  Guarantor or any newly created or
         acquired  Subsidiary  as  an  Unrestricted  Subsidiary  under  the  CHK
         Indentures,  and so long as such  designation  is  permitted  hereunder
         (including  under the provisions of the Credit  Agreement  incorporated
         herein by reference)  and a Financial  Officer of Party B has certified
         in writing  thereto to Party A, Party A shall  release such  designated
         Subsidiary   from  its  guarantee   obligations   under  the  Guaranty.
         Notwithstanding  any such  release,  no Subsidiary  Guarantor  shall be
         released from any of its obligations  under any Mortgage as to which it
         is a mortgagor,  nor shall any related Mortgaged Properties be released
         from the Lien  thereof,  unless such release is permitted  under clause
         (l) or (m) of this Part 6 and, if  otherwise  required  pursuant to the
         terms  hereof,  any  related  replacement  or  substitution  of Reserve
         Collateral occurs simultaneously therewith.

                                       22

(r)      FURTHER  ASSURANCES.  Party B shall  from  time  to  time  execute  and
         deliver,  or cause to be executed and delivered by other CHK Companies,
         such additional mortgages, deeds of trust, chattel mortgages,  security
         agreements,  financing statements, reports (including Reserve Reports),
         instruments, legal opinions, certificates or documents, all in form and
         substance  satisfactory to Party A, and take all such actions as may be
         requested  hereunder  (including  in order to comply with clause (q) of
         this Part 6) or as Party A may reasonably request, in each case for the
         purposes of implementing or further effectuating the provisions of this
         Agreement  and the other  Secured  Trading  Line  Documents  (including
         clause (q) of this Part 6), or of more fully perfecting or renewing the
         rights of Party A with  respect to the  Collateral  (or with respect to
         any  additions  thereto or  replacements  or  proceeds  thereof or with
         respect to any other property or assets  hereafter  acquired by Party B
         or any  Subsidiary  Guarantor  which  may be  deemed  to be part of the
         Collateral) pursuant hereto or thereto. Upon the exercise by Party A of
         any power, right, privilege or remedy pursuant to this Agreement or the
         other  Secured  Trading  Line  Documents  that  requires  any  consent,
         approval,  recording qualification or authorization of any governmental
         authority,  the Company and Party B shall execute and deliver,  or will
         cause the execution and delivery of, all applications,  certifications,
         instruments and other documents and papers that Party A may be required
         to obtain from the Company, Party B or any of the Subsidiary Guarantors
         for such governmental consent,  approval,  recording,  qualification or
         authorization.

(s)      ADDITIONAL EVENTS OF DEFAULT.  In addition to the Events of Default set
         forth in Section 5(a) of this Agreement, the following shall constitute
         additional  Events  of  Default  as to which  Party B shall be the sole
         Defaulting Party:

         (1)      RESERVE  COLLATERAL RATIO.  Failure by Party B to maintain the
                  Reserve  Collateral  Ratio in  excess of the  Minimum  Reserve
                  Collateral  Ratio if such failure is not  remedied  within one
                  Local Business Day after receipt of notice from Party A;

         (2)      ADDITIONAL  COLLATERAL.  Failure  by  Party B to  deliver  the
                  additional  Collateral as and when required  under clauses (j)
                  and (k) of this Part 6 if such failure is not remedied  within
                  five Local Business Days;

         (3)      VOLUME  LIMITATIONS.  Party B breaches the Volume  Limitations
                  and such  breach is not  remedied  (whether  by  unwinding  or
                  liquidating  one or more  Natural  Gas  Hedges  or  otherwise)
                  within 10 Local Business Days;

         (4)      REPORTING.   Failure  by  Party  B  to  comply  with  all  the
                  requirements  of clause (i) of this Part 6 if such  failure is
                  not remedied within five Local Business Days (PROVIDED that no
                  other  Event of  Default or  Potential  Event of Default is in
                  effect after such remediation);

         (5)      ADDITIONAL AGREEMENTS.  Failure by Party B to comply with any
                  of the other covenants set forth in clause in this Part 6; and

         (6)      CHANGE IN CONTROL.  (i) Any "person" or "group" (as such terms
                  are used in  Sections  13(d) and 14(d) of the U.S.  Securities
                  Exchange Act of 1934 (the "EXCHANGE  ACT"),  shall become,  or
                  obtain  rights  (whether  by means  of  warrants,  options  or
                  otherwise) to become,  the  "beneficial  owner" (as defined in
                  Rules 13(d)-3 and 13(d)-5 under the Exchange Act), directly or
                  indirectly,  of more than 35% of the outstanding  common stock
                  of the  Company;  (ii) the board of  directors  of the Company
                  shall cease to consist of a majority of Continuing  Directors;
                  (iii) the Company  shall cease to own and  control,  of record
                  and beneficially,  directly or indirectly,  100% of each class
                  of outstanding  Capital Stock of Party B and each other Credit
                  Support  Provider  free  and  clear  of all  Liens;  or (iv) a
                  Specified Change of Control shall occur.

                  As  used  in  this  clause  (6),  "CONTINUING  DIRECTORS"  and
                  "SPECIFIED  CHANGE OF CONTROL" have the meanings given to them
                  in the Credit Agreement.

                                       23

(t)      CERTAIN LETTER OF CREDIT PROVISIONS.

         (1)      COMMON  PROVISIONS.  Each Letter of Credit shall be subject to
                  the following provisions:

                  (A)      Each Letter of Credit provided by Party B shall be an
                           irrevocable,  transferable,  standby letter of credit
                           from an Eligible  Financial  Institution  in form and
                           substance   satisfactory  to  Party  A  in  its  sole
                           discretion.

                  (B)      Each Letter of Credit shall  provide that Party A may
                           draw upon such  Letter of Credit in an amount  (up to
                           the  undrawn  portion of the stated or face amount of
                           such  Letter of Credit)  that is equal to all amounts
                           that are due and owing  from  Party B  hereunder  but
                           have not been paid to Party A within the time allowed
                           for such payments under this Agreement  (after giving
                           effect to any applicable notice  requirement or grace
                           period).  A Letter of  Credit  shall  provide  that a
                           drawing  be  made  upon  such  Letter  of  Credit  by
                           submission  to the  issuer  thereof  of  one or  more
                           certificates  specifying the amounts due and owing to
                           Party A in accordance with the specific  requirements
                           of such Letter of Credit.

                  (C)      If any issuer of a Letter of Credit  (including UBOC)
                           ceases to be an Eligible Financial Institution,  then
                           Party B  shall,  by no  later  than the date 10 Local
                           Business  Days  thereafter,  replace  such  Letter of
                           Credit  with Cash or another  Letter of Credit  whose
                           issuer is an  Eligible  Financial  Institution  (or a
                           combination  thereof) in accordance  with and subject
                           to the  terms  set  forth in this  Agreement  and the
                           Credit Support  Annex.  Each Letter of Credit that is
                           required to be  substituted  in accordance  with this
                           clause (C) but that is not so substituted within such
                           10 Local Business Day period is herein referred to as
                           an "INELIGIBLE LETTER OF CREDIT".

         (2)      UBOC  PROVISIONS.  If Union Bank of California  ("UBOC") is at
                  any  time  deemed  to be  an  Eligible  Financial  Institution
                  pursuant  clause (3) of the definition of "Eligible  Financial
                  Institution" in this Agreement,  then the following provisions
                  shall apply to all  Letters of Credit  issued by UBOC that are
                  then outstanding at such time (such Letters of Credit, in such
                  circumstances, the "UBOC LETTERS OF CREDIT"):

                  (A)      the aggregate undrawn face amount of the UBOC Letters
                           of  Credit at such time  shall  not  exceed  the UBOC
                           Sublimit at such time;

                  (B)      no UBOC  Letter of Credit  shall have an expiry  date
                           later than 120 days after its date of issuance; and

                  (C)      on or prior to the expiry date of each UBOC Letter of
                           Credit,  Party B shall substitute such UBOC Letter of
                           Credit  for Cash or one or more  non-UBOC  Letters of
                           Credit (or a combination  thereof) in accordance with
                           and subject to the terms set forth in this  Agreement
                           and the  Credit  Support  Annex (it being  understood
                           that  if  such  UBOC  Letter  of  Credit  constitutes
                           Temporary  Reserve  Collateral,  then Party B may (or
                           shall)  replace  such  UBOC  Letter  of  Credit  with
                           Mortgages in the manner and to the extent provided in
                           clause (j)(3) of this Part 6).

                  As  used  herein,  "UBOC  SUBLIMIT"  means,  at  any  date  of
                  determination,  Maximum  Total  Capacity  (or, if such date of
                  determination  is prior to the 90th day  after  the  Effective
                  Date,  U.S.$200,000,000  PLUS  Syndicated  Capacity as of such
                  date) MULTIPLIED BY 10%.

                                       24

         (3)      PROVISIONS  FOR  NON-UBOC  LETTERS  OF CREDIT.  The  following
                  provisions  shall  apply to all  Letters of Credit  other than
                  UBOC Letters of Credit:

                  (A)      Each such Letter of Credit  shall have an expiry date
                           that is thirty days  following the first  Calculation
                           Date  following  the date on  which  such  Letter  of
                           Credit is  issued  (or,  if such  Letter of Credit is
                           issued on or following  the final  Calculation  Date,
                           the date that is thirty  days  following  the  latest
                           Termination  Date  of the  Termination  Dates  of all
                           Transactions then outstanding under this Agreement).

                  (B)      No such Letter of Credit may be  increased by Party B
                           without the prior  consent of Party A (which  Party A
                           may  withhold  in its  sole  discretion)  unless  the
                           issuer  of  such  Letter  of  Credit  is an  Eligible
                           Financial Institution at the time of such increase.

(u)      CERTAIN  DEFINITIONS.  The  definitions  of terms  herein  shall  apply
         equally to the singular and plural forms of the terms defined. Whenever
         the context may require,  any pronoun shall  include the  corresponding
         masculine,  feminine and neuter forms. The words "include",  "includes"
         and  "including"  shall be deemed to be followed by the phrase "without
         limitation".  The  word  "will"  shall  be  construed  to have the same
         meaning and effect as the word "shall".  The term "date hereof"  refers
         to the date of this Agreement  first above written.  Unless the context
         requires otherwise (1) any definition of or reference to any agreement,
         instrument or other document  herein shall be construed as referring to
         such  agreement,  instrument  or other  document  as from  time to time
         amended,  restated,  supplemented or otherwise modified (subject to any
         restrictions   on  such   amendments,   restatements,   supplements  or
         modifications set forth therein or herein),  (2) references to any law,
         constitution, statute, treaty, regulation, rule or ordinance, including
         any  section  or  other  part  thereof  (each,  for  purposes  of  this
         paragraph,  a "LAW"),  shall refer to that law as amended  from time to
         time and shall include any successor  law, (3) any reference  herein to
         any Person shall be construed to include such Person's  successors  and
         permitted  assigns,  (4) the words "herein",  "hereof" and "hereunder",
         and  words  of  similar  import,  shall be  construed  to refer to this
         Agreement in its entirety and not to any  particular  provision  hereof
         and (5) all references herein to Sections,  Parts,  Annexes,  Schedules
         and Exhibits  shall be construed to refer to Sections and Parts of, and
         Annexes, Schedules and Exhibits to, this Agreement.

         As used herein,  the  following  terms have the meanings  given to them
         below:

                  "ASSUMPTION AND ACCESSION  AGREEMENT"  means an assumption and
         accession  agreement between a Subsidiary of the Company and Party A in
         substantially the form of Exhibit A to the Guaranty.

                  "AVAILABLE  CAPACITY" means, as of any date of  determination,
         the lesser of:

                  (a)      the Forward Reserve  Collateral  Value DIVIDED BY the
                           Minimum Reserve Collateral Ratio; and

                  (b)      Maximum   Total   Capacity   (or,  if  such  date  of
                           determination  is prior to the  90th  day  after  the
                           Effective  Date,   U.S.$200,000,000  PLUS  Syndicated
                           Capacity as of such date).

                  "CALCULATION  DATE" means (a) the Effective Date; and (b) each
         anniversary  of the  Effective  Date  falling  prior  to the  Scheduled
         Maturity Date (or, if any such anniversary is not a Local Business Day,
         the first following day that is a Local Business Day).

                  "CASH"  means the  lawful  currency  of the  United  States of
         America.

                  "CEMI GROUP" means Chesapeake Energy Marketing, Inc., Mayfield
         Processing,  L.L.C., MidCon Compression, L.P. and each other Subsidiary
         which  is  designated  as an  Unrestricted  Subsidiary  under  the  CHK
         Indentures in compliance  with the terms of this  Agreement and the CHK
         Indentures.

                  "CHK COMPANY"  means the Company and each of its  Subsidiaries
         (including Party B and each other Credit Support Provider).

                  "CHK  INDENTURES"  means  the  Indentures  referred  to in the
         Credit Agreement.

                  "COLLATERAL" means, collectively,  the Reserve Collateral, the
         Intra-Year  Collateral  and the Temporary  Reserve  Collateral  and all
         other collateral pledged by Party B and the Credit Support Providers to
         Party A under the Secured Trading Line Documents.

                  "COMPANY" means Chesapeake Energy Corporation.

                                       25

                  "CREDIT  AGREEMENT"  means the  Fourth  Amended  and  Restated
         Credit  Agreement,  dated as of May 7,  2004,  among  (INTER  ALIA) the
         Company,  Party B, as  Borrower,  Union Bank of  California,  N.A.,  as
         Administrative  Agent and Collateral Agent, the  co-syndication  agents
         and co-documentation agents referred to therein and the several lenders
         from time to time  parties  thereto,  as such  Credit  Agreement  is in
         effect on the date hereof and without giving effect to any  amendments,
         modifications or supplements thereto, or waiver or termination thereof,
         after  the  date  hereof,  PROVIDED  that  if  Party  A  (in  its  sole
         discretion) consents to any such amendment, modification, supplement or
         waiver  expressly  for purposes this  Agreement,  then the term "Credit
         Agreement" shall refer to the Credit Agreement as so amended, modified,
         supplemented or waived.

                  "CREDIT  SUPPORT  ANNEX" means the Credit Support Annex hereto
         between  Party  A and  Party B in  substantially  the  form of  Annex B
         hereto.

                  "CREDIT SUPPORT DOCUMENT" means, collectively:

                  (a)      the Credit Support Annex;

                  (b)      the Guaranty;

                  (c)      the Mortgages  (together  with any related  financing
                           statements); and

                  (d)      the Letters of Credit  delivered  to Party A pursuant
                           to the terms of this Agreement and the Credit Support
                           Annex.

                  "CREDIT SUPPORT PROVIDER" means, collectively:

                  (a)      the Company; and

                  (b)      each  CHK  Company  (other  than  Party  B) that is a
                           mortgagor under a Mortgage or a Subsidiary  Guarantor
                           under the Guaranty.

                  "CURRENT  RESERVE  COLLATERAL  VALUE"  means,  for any date of
         determination,  (a) the then-current  Value of the Reserve  Collateral,
         PLUS (b) the  then-current  Value of the Temporary  Reserve  Collateral
         MULTIPLIED  BY the  Minimum  Collateral  Reserve  Ratio PLUS (c) unless
         otherwise  specified herein,  the then-current  Value of the Intra-Year
         Collateral  MULTIPLIED BY the Minimum  Collateral Reserve Ratio, all as
         reasonably determined by the Calculation Agent.

                  "EFFECTIVE DATE" means the date of this Agreement.

                  "ELIGIBLE FINANCIAL INSTITUTION" means, at any time:

         (1)      a  financial   institution  whose  long-term   unsecured  debt
                  obligations  then  have a credit  rating of "Aa3" or better by
                  Moody's and "AA-" or better by Standard & Poor's;

         (2)      a financial  institution  not  referred to in clause (1) above
                  whose long-term  unsecured debt obligations then have a credit
                  rating  of at  least  "A1" by  Moody's  and at  least  "A+" by
                  Standard & Poor's,  but only if such financial  institution is
                  otherwise acceptable to Party A in its sole discretion; and

         (3)      if UBOC does not qualify as an Eligible Financial  Institution
                  on any date under  clause  (1) or (2)  above,  then UBOC shall
                  nevertheless be deemed to be an Eligible Financial Institution
                  on such date if its long-term  unsecured debt obligations then
                  have a credit  rating of at least "A2" by Moody's and at least
                  "A-" by Standard & Poor's.

                  "ELIGIBLE  PROPERTIES" means property interests of Party B and
         the other CHK Companies to which Proved  Developed  Producing  Reserves
         are  attributable  and  which  have  oil and  natural  gas  production,
         diversity and other  characteristics  acceptable to Party A in its sole
         discretion.

                                       26

                  "FACILITY TERMINATION DATE" means the earlier of:

                  (a)      the Scheduled Maturity Date; and

                  (b)      the first day following the Voluntary  Trading Period
                           Termination  Date  (if  any) on  which  no  Specified
                           Natural Gas Transaction is outstanding.

                  "FINANCIAL  OFFICER" means, as to Party B or any of the Credit
         Support  Providers,  the chief  financial  officer,  treasurer or other
         officer thereof acceptable to Party A.

                  "FORWARD RESERVE COLLATERAL VALUE" means:

                  (a)      for any date of  determination  that occurs  prior to
                           the final Calculation Date, the sum of:

                           (1) the Forward Value of the Reserve Collateral PLUS

                           (2) the aggregate  Value  of  all  Temporary  Reserve
                               Collateral  MULTIPLIED BY the Minimum  Collateral
                               Reserve   Ratio;   and

                  (b)      for any date of determination that occurs on or after
                           the  final  Calculation  Date,  the  Current  Reserve
                           Collateral  Value  (determined  without regard to any
                           Intra-Year  Collateral),

         in each case as  reasonably determined by the Calculation Agent.

                  "FORWARD VALUE" means, for any Eligible Property:

                  (a)      for any date of  determination  that occurs  prior to
                           the final  Calculation  Date, the projected  Value of
                           such  Eligible  Property  as of  the  next  occurring
                           Calculation Date; and

                  (b)      for any date of determination that occurs on or after
                           the  final   Calculation  Date,  the  Value  of  such
                           Eligible Property as of such date of determination,

         all  as  reasonably  determined  by the  Calculation  Agent.  For  the
         avoidance of doubt:

                  (1)      if a Forward  Value  calculation  is being made under
                           clause   (j)(2)   of  this  Part  6  on  or  after  a
                           Pre-Calculation   Date,   then   (x)  the   "date  of
                           determination" for such calculation will be deemed to
                           be the Calculation  Date  immediately  following such
                           Pre-Calculation Date, and (y) the reference in clause
                           (a) above to the "next  occurring  Calculation  Date"
                           means the  second  Calculation  Date  following  such
                           Pre-Calculation Date;

                  (2)      if a Forward  Value  calculation  is being  made on a
                           Calculation    Date,    then   (x)   the   "date   of
                           determination"  for  such  calculation  will  be such
                           Calculation Date, and (y) the reference in clause (a)
                           above to the "next occurring  Calculation Date" means
                           the Calculation  Date following the Calculation  Date
                           on which such calculation is made; and

                  (3)      for each Forward Value  calculation  other than those
                           referred  to in clauses  (1) and (2)  above,  (x) the
                           "date of determination"  for such calculation will be
                           the date on which such  calculation  is made, and (y)
                           the  reference  in  clause  (a)  above  to the  "next
                           occurring  Calculation  Date"  means the  Calculation
                           Date following the date on which such  calculation is
                           made.

                  "GUARANTY"  means  the  Guaranty  Agreement  dated  as of  the
         Effective Date by the Company and each Subsidiary Guarantor in favor of
         Party A in substantially the form attached as Exhibit C hereto.

                  "INTRA-YEAR  NATURAL  GAS  PFE"  means,  as  of  any  date  of
         determination,  the highest  Natural Gas PFE that occurs  between  such
         date of determination  and the next occurring  Calculation Date (or, if
         such date of  determination  occurs after the final  Calculation  Date,
         between such date of determination and the Facility  Termination Date),
         as determined by the Calculation Agent taking into account all existing
         (and, if relevant, proposed) Specified Natural Gas Transactions.

                  "LETTER OF CREDIT"  means a letter of credit in  substantially
         the form  attached  as Exhibit D (or  otherwise  in form and  substance
         satisfactory to Party A), issued by an Eligible  Financial  Institution
         for the account of Party B or one of its Affiliates and for the benefit
         of Party A hereunder and meeting the  requirements set forth herein and
         in the Credit Support Annex.

                                       27

                  "LETTER OF CREDIT DEFAULT"  means,  with respect to any Letter
         of Credit,  the related  issuing bank (a) becomes  subject to any event
         analogous to an event specified in Section 5(a)(vii) of this Agreement,
         (b) fails to comply with or perform its  obligations  under such Letter
         of  Credit  if such  failure  shall  continue  after  the  lapse of any
         applicable grace period,  (c) shall disaffirm,  disclaim,  repudiate or
         reject,  in whole or in part,  or challenge the validity of such Letter
         of Credit or (d)  suffers a material  adverse  change in its  financial
         condition  or  prospects  (the  existence  of  any  such  change  being
         determined  by the  beneficiary  of the Letter of Credit  acting in its
         sole discretion).

                  "LIEN" means any mortgage, pledge, hypothecation,  assignment,
         deposit arrangement,  encumbrance, lien (statutory or other), charge or
         other security  interest or any preference,  priority or other security
         agreement or preferential  arrangement of any kind or nature whatsoever
         (including any conditional sale or other title retention  agreement and
         any capital lease having  substantially the same economic effect as any
         of the foregoing).

                  "MAXIMUM TOTAL CAPACITY" means U.S.$600,000,000, PROVIDED that
         if Syndicated Capacity on the 90th day after the Effective Date is less
         than U.S.$400,000,000,  then Maximum Total Capacity shall be reduced on
         that date by the amount of such deficiency.

                  "MINIMUM RESERVE COLLATERAL RATIO" means 1.50 to 1.00.

                  "MOODY'S" means Moody's Investors Service, Inc.

                  "MORTGAGE"  shall mean the Mortgage,  Deed of Trust,  Security
         Agreement,  Assignment of  Production,  Financing  Statement  (Personal
         Properties Including  Hydrocarbons) and Fixture Filing, dated as of the
         date of its  execution  and  delivery  and in  substantially  the  form
         attached  as  Exhibit  B hereto  or  otherwise  in form  and  substance
         satisfactory  to Party A in its sole  discretion.  Each Mortgage  shall
         cover all of the relevant  mortgagor's right, title and interest in and
         to the  collateral  purported  to be  covered  thereby  (including  all
         proceeds thereof and all related accounts receivable).

                  "MORTGAGED  PROPERTIES" shall mean the "Mortgaged  Properties"
         as defined in, and subject to the duly recorded Lien of, the Mortgages.

                  "NATURAL  GAS  MARK-TO-MARKET   AMOUNT"  means  the  aggregate
         mark-to-market  position of all Specified  Natural Gas  Transactions as
         determined by the Calculation Agent in a commercially reasonable manner
         at the close of each Local  Business  Day. If such position is in favor
         of Party A, the Natural Gas  Mark-to-Market  Amount will be stated as a
         positive  number.  If such position is in favor of Party B, the Natural
         Gas Mark-to-Market Amount will be stated as a negative number.

                  "NATURAL GAS PFE" means, as of the date of determination,  the
         peak potential future natural gas trading credit exposure to Party B by
         Party A as  determined  in good faith by the  Calculation  Agent taking
         into  account all  existing  (and,  if  relevant,  proposed)  Specified
         Natural Gas  Transactions.  For the avoidance of doubt, the Calculation
         Agent's  determination  of  Natural  Gas PFE  will  depend  on  factors
         including  (a) changes in NYMEX natural gas futures  prices,  (b) NYMEX
         natural gas futures implied volatility levels, and (c) delivery volumes
         remaining at each calendar month until the Facility Termination Date.

                  "PERSON"  means  an  individual,   corporation   (including  a
         business  trust),  partnership,   limited  liability  company,  limited
         liability partnership, joint venture, association, joint stock company,
         trust (including any beneficiary thereof),  unincorporated  association
         or government or any agency or political subdivision thereof.

                  "PROVED",  "PROVED  DEVELOPED  PRODUCING  RESERVES",   "PROVED
         RESERVES",   "PROVED   DEVELOPED   NON-PRODUCING   RESERVES",   "PROVED
         UNDEVELOPED  RESERVES" and  "PRODUCING"  have the  respective  meanings
         given to them in the Definitions  for Oil and Gas Reserves  promulgated
         by the Society of  Petroleum  Engineers  (or any  generally  recognized
         successors).

                                       28


                  "QUALIFIED  MORTGAGED PROPERTY" means a Mortgaged Property (a)
         which is an Eligible Property; (b) as to which Party B shall have taken
         all actions and executed and delivered all documents under clauses (2),
         (3), (4), (5), (7), (8), (9), (10), (11), (13), (17) and (19) of clause
         (h) of this Part 6 or clause (o) of this Part 6; and (c) which shall be
         subject to a first priority perfected Lien in favor of Party A.

                  "REGULATION  S-K" and  "REGULATION  S-X"  mean,  respectively,
         Regulation S-K and Regulation S-X promulgated by the SEC, as such Rules
         are in effect on the date hereof.

                  "RESERVE  COLLATERAL" means the Initial Reserve Collateral and
         all  other  Mortgaged  Properties  pledged  by  Party B and the  Credit
         Support  Providers  to Party A pursuant to the terms of this  Agreement
         and the other  Secured  Trading Line  Documents,  PROVIDED that Reserve
         Collateral  shall not include on any date any property that is not then
         a Qualified Mortgaged Property.

                  "RESERVE COLLATERAL RATIO" means:

                  (a)      for any date of  determination  that is a Calculation
                           Date, the Forward Reserve Collateral Value DIVIDED BY
                           the Natural Gas PFE; and

                  (b)      for any other date of determination,  (1) the Current
                           Reserve Collateral Value for such date DIVIDED BY (2)
                           (x) if the  Natural  Gas  Mark-to-Market  Amount is a
                           positive  number as of such  date,  the  Natural  Gas
                           Mark-to-Market Amount for such date or (y) otherwise,
                           the Intra-Year Natural Gas PFE.

                  "SCHEDULED  MATURITY  DATE" means May 31, 2009,  PROVIDED that
         the  Scheduled  Maturity Date may be extended at any time and from time
         to time to May 31 in any  subsequent  year  if  Party A and  Party B so
         agree (it being understood that no party shall be obligated to agree to
         any such extension of the Scheduled Maturity Date, and may withhold its
         consent to any such extension in its sole discretion).

                  "SEC" means the U.S.  Securities  and Exchange  Commission (or
         any governmental agency substituted therefor).

                  "SECURED   TRADING  LINE   DOCUMENTS"   means  this  Agreement
         (including the Schedule and Credit Support Annex and all  Confirmations
         of  Specified   Natural  Gas   Transactions)  and  the  Credit  Support
         Documents.

                  "SOLVENCY  CERTIFICATE"  means a certificate of Party B or one
         if its Affiliates  (as  applicable),  addressed to Party A,  certifying
         that, as of the date of such certificate, Party B or such Affiliate (as
         applicable) is Solvent.

                  "SOLVENT"  means that, as of any date of  determination  as to
         any Person,  (a) the amount of the "present fair saleable value" of the
         assets of such Person will,  as of such date,  exceed the amount of all
         "liabilities of such Person, contingent or otherwise", as of such date,
         as such quoted  terms are  determined  in  accordance  with  applicable
         federal and state laws  governing  determinations  of the insolvency of
         debtors,  (b) the  present  fair  saleable  value of the assets of such
         Person will,  as of such date,  be greater than the amount that will be
         required to pay the liability of such Person on its debts as such debts
         become absolute and matured,  (c) such Person will not have, as of such
         date, an unreasonably small amount of capital with which to conduct its
         business,  and (d) such  Person  will be able to pay its  debts as they
         mature. For purposes of this definition,  (1) "debt" means liability on
         a "claim",  and (2) "claim" means any (x) right to payment,  whether or
         not such a right is  reduced  to  judgment,  liquidated,  unliquidated,
         fixed, contingent,  matured, unmatured,  disputed,  undisputed,  legal,
         equitable, secured or unsecured or (y) right to an equitable remedy for
         breach of  performance if such breach gives rise to a right to payment,
         whether  or not  such  right  to an  equitable  remedy  is  reduced  to
         judgment,   fixed,   contingent,   matured  or   unmatured,   disputed,
         undisputed, secured or unsecured.

                                       29

                  "SPECIFIED  NATURAL  GAS  TRANSACTION"  means any  Transaction
         between Party A and Party B that  satisfies (in the good faith judgment
         of the Calculation Agent) each of the following conditions:

                  (a)      such   Transaction   is  a   cash-settled   commodity
                           transaction  in which the sole  commodity  covered is
                           natural gas;

                  (b)      the effective date of such  Transaction  falls during
                           the Trading Period; and

                  (c)      no part of the term of such  Transaction  falls after
                           the Scheduled Maturity Date.

                  "STANDARD & POOR'S" means Standard & Poor's Ratings Services,
         a division of The McGraw-Hill Companies, Inc.

                  "SUBSIDIARY  GUARANTOR"  means each  Subsidiary of the Company
         (other  than  Party B) that is a  "Subsidiary  Guarantor"  under and as
         defined in the Guaranty.

                  "SYNDICATED  CAPACITY"  means, as of any date, the portion (if
         any) of Maximum  Total  Capacity  that Party A has  syndicated to third
         parties,  all as  determined  by  Party A in its  sole  discretion  and
         reported by Party A to Party B from time to time.

                  "TRADING  PERIOD"  means the  period  from and  including  the
         Effective  Date to but  excluding  the  earlier  of (a)  the  Scheduled
         Maturity Date and (b) the Voluntary Trading Period Termination Date.

                  "TRANSACTION  YEAR"  means each  period  from and  including a
         Calculation  Date  (including the Effective Date) through but excluding
         the  next  succeeding   Calculation  Date,   PROVIDED  that  the  final
         Transaction  Year shall end on and  include  the  Facility  Termination
         Date.

                  "UNRESTRICTED  SUBSIDIARY" means an "Unrestricted  Subsidiary"
         as defined in the CHK Indentures.

                  "VALUE" means, as of any date of determination:

                  (a)      with respect to Cash, the amount thereof;

                  (b)      with  respect to a Letter of Credit,  the amount then
                           available  to be  unconditionally  drawn  by  Party A
                           under the terms of such  Letter of  Credit,  PROVIDED
                           that if:

                           (1)  such  Letter of Credit  is not a UBOC  Letter of
                                Credit and the stated expiry date of such Letter
                                of Credit is less than 30 days  after  such date
                                of determination;

                           (2)  such  Letter  of  Credit  is then an  Ineligible
                                Letter of Credit; or

                           (3)  a Letter of Credit Default occurs with respect
                                to such Letter of Credit,

                           then the  Value of such  Letter  of Credit as of such
                           date shall be equal to U.S.$0;

                  (c)      with respect to any Mortgaged  Properties,  the value
                           of Proved Developed  Producing Reserves  attributable
                           thereto (determined taking into account all remaining
                           production volumes as of such date of determination),
                           all  as  reasonably  determined  by  the  Calculation
                           Agent, and

                  (d)      with respect to any other property, U.S.$0.

                                       30

                  In making  its  determination  under  clause  (c)  above,  the
                  Calculation  Agent will determine the expected  nominal future
                  cash flows of such  reserves  (based on the  then-most  recent
                  Reserve  Reports and utilizing  commodity  prices based on the
                  Calculation Agent's  then-current  standard internal commodity
                  "price  decks"  used by it for  evaluating  and making  credit
                  decisions for Party B and other similar commodity  exploration
                  and  production  companies  with which Party A has existing or
                  prospective  credit  exposure,  PROVIDED that the  Calculation
                  Agent  shall be entitled to use its own  estimates  of,  among
                  other  things,  natural  gas  liquids  prices  and  production
                  volumes),  net of expenses  estimated by the Calculation Agent
                  (including  the  Calculation  Agent's  estimates  of operating
                  expenses, capital costs and any environmental, remediation and
                  other  costs  and  expenses  related  to such  reserves),  and
                  discount  such net nominal  future cash flows back to the date
                  of determination using a discount rate of 9% per annum.

                            [signature page follows]

                                       31

DEUTSCHE BANK AG                                CHESAPEAKE EXPLORATION
                                                LIMITED PARTNERSHIP

                                            By:  Chesapeake Operating, Inc.,
                                                     its general partner

By:  /s/ GREGORY COLLETT                    By:  /s/ MARTHA A BURGER
     ----------------------------------          ------------------------------
      Name:  Gregory Collett                     Name:  Martha A. Burger
      Title: Vice President and Counsel          Title: Treasurer and
                                                        Senior Vice President -
                                                        Human Resources

By:  /s/ CARLO CARLTON
     ---------------------------------
     Name:  Carlo Carlton
     Title: Vice President and Counsel

                                       32