EXHIBIT 10.1

                                                               EXECUTION VERSION
                                                               -----------------









                             NOTE PURCHASE AGREEMENT

                          DATED AS OF OCTOBER 29, 2004

                                      AMONG

                             CARRIZO OIL & GAS, INC.
                                   AS COMPANY,

                                 THE PURCHASERS,

                                       AND

                             PCRL INVESTMENTS L.P.,
                             AS THE COLLATERAL AGENT



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                         $28,000,000 Principal Amount of
                      10% Senior Subordinated Secured Notes
                              Due December 15, 2008


- --------------------------------------------------------------------------------







                                TABLE OF CONTENTS



                                                                                                               Page

                                                                                                       
ARTICLE I             DEFINITIONS.................................................................................1

ARTICLE II            PURCHASE AND SALE OF THE NOTES..............................................................21
              2.1.    Authorization and Issuance of the Notes.....................................................21
              2.2.    Delivery of the Notes.......................................................................22
              2.3.    Closing.....................................................................................22

ARTICLE III           PROVISIONS OF THE NOTES.....................................................................22
              3.1.    The Notes...................................................................................22
              3.2.    General Provisions as to Payments...........................................................22
              3.3.    Interest....................................................................................25
              3.4.    Interest on Overdue Amounts.................................................................28
              3.5.    Mandatory Redemption........................................................................28
              3.6.    Optional Redemption.........................................................................30
              3.7.    Securities Register.........................................................................31
              3.8.    Lost, Etc. Securities.......................................................................31
              3.9.    Several Obligations; Remedies Independent...................................................32
              3.10.   Notes Not Senior Indebtedness...............................................................32

ARTICLE IV            CONDITIONS PRECEDENT........................................................................32
              4.1.    Purchase of Initial Notes...................................................................32
              4.2.    Certificate of Effectiveness................................................................34
              4.3.    Purchase of Additional Notes................................................................34

ARTICLE V             REPRESENTATIONS AND WARRANTIES OF THE COMPANY...............................................36
              5.1.    Corporate Authority of the Company..........................................................36
              5.2.    Financial Reports...........................................................................37
              5.3.    Title to Mortgaged Properties...............................................................37
              5.4.    Litigation..................................................................................38
              5.5.    Approvals...................................................................................38
              5.6.    Required Insurance..........................................................................38
              5.7.    Licenses....................................................................................38
              5.8.    Adverse Agreements..........................................................................38
              5.9.    Default or Event of Default.................................................................38
              5.10.   Employee Benefit Plans......................................................................38
              5.11.   Investment Company Act......................................................................39
              5.12.   Public Utility Holding Company Act..........................................................39
              5.13.   Regulations X, T and U......................................................................39
              5.14.   Location of Offices and Records.............................................................39
              5.15.   Patriot Act.................................................................................39



              5.16.   Environmental Matters.......................................................................39
              5.17.   Solvency of the Company.....................................................................41
              5.18.   Governmental Requirements...................................................................41
              5.19.   Corporate Authority of the Guarantor........................................................41
              5.20.   Subordinated Note Agreement.................................................................42
              5.21.   Security Agreement..........................................................................42
              5.22.   Closing Date Borrowing Base and Quarterly Reduction.........................................42
              5.23.   Survival of Representations and Warranties..................................................42

ARTICLE VI            AFFIRMATIVE COVENANTS.......................................................................42
              6.1.    Financial Statements; Other Reporting Requirements..........................................42
              6.2.    Notice of Default; Litigation; ERISA Matters................................................44
              6.3.    Maintenance of Existence, Properties and Liens..............................................44
              6.4.    Taxes.......................................................................................45
              6.5.    Compliance with Environmental Laws..........................................................45
              6.6.    Further Assurances..........................................................................46
              6.7.    Financial Covenants.........................................................................46
              6.8.    Operations..................................................................................47
              6.9.    Change of Location..........................................................................47
              6.10.   Employee Benefit Plans......................................................................47
              6.11.   Field Audits; Other Information.............................................................47
              6.12.   Insurance...................................................................................47
              6.13.   Subsidiaries................................................................................48
              6.14.   Disclosure Requirements.....................................................................48
              6.15.   Collateral..................................................................................48
              6.16.   Amendment of Disclosure Schedule............................................................50
              6.17.   Post Closing Requirements...................................................................50
              6.18.   Investment Base Determination and Borrowing Base............................................50

ARTICLE VII           NEGATIVE COVENANTS..........................................................................51
              7.1.    Limitations on Fundamental Changes..........................................................51
              7.2.    Disposition of Assets.......................................................................51
              7.3.    Repurchase of Stock; Dividends..............................................................51
              7.4.    Liens; Negative Pledge......................................................................52
              7.5.    Debts.......................................................................................54
              7.6.    Investments, Loans and Advances.............................................................55
              7.7.    Other Agreements............................................................................57
              7.8.    Transactions with Affiliates................................................................58
              7.9.    Second Priority Liens.......................................................................58
              7.10.   Commodity Transactions......................................................................58
              7.11.   Restriction of Amendments to First Lien Credit Documents....................................58

ARTICLE VIII          DEFAULTS....................................................................................58
              8.1.    Events of Default...........................................................................58
              8.2.    Waivers.....................................................................................60
              8.3.    Notice to Delta Farms Lessors...............................................................61


ARTICLE IX            ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES..............................................61
              9.1.    Acceleration................................................................................61
              9.2.    Amendments..................................................................................61
              9.3.    Preservation of Rights......................................................................62

ARTICLE X             COLLATERAL AGENCY...........................................................................62
              10.1.   Creation of Collateral Agency...............................................................62
              10.2.   Possession and Use of Collateral............................................................62
              10.3.   Additional Collateral.......................................................................62
              10.4.   Releases of Collateral......................................................................63

ARTICLE XI            COLLATERAL AGENT............................................................................63
              11.1.   Appointment; Nature of Relationship.........................................................63
              11.2.   Powers......................................................................................64
              11.3.   General Immunity............................................................................64
              11.4.   No Responsibility for Loans, Recitals, etc..................................................64
              11.5.   Action on Instructions of Holders...........................................................64
              11.6.   Employment of the Collateral Agents and Counsel.............................................65
              11.7.   Reliance on Documents; Counsel..............................................................65
              11.8.   COLLATERAL AGENT'S REIMBURSEMENT AND INDEMNIFICATION........................................65
              11.9.   Notice of Default...........................................................................66
              11.10.  Rights as a Holder..........................................................................66
              11.11.  Holder Decision.............................................................................66
              11.12.  Successor Collateral Agent..................................................................66
              11.13.  Delegation to Affiliates....................................................................67
              11.14.  Execution of Security Documents.............................................................67
              11.15.  Collateral Releases.........................................................................67

ARTICLE XII           SETOFF; RATABLE PAYMENTS....................................................................68
              12.1.   Setoff......................................................................................68
              12.2.   Ratable Payments............................................................................68

ARTICLE XIII          REPRESENTATIONS AND WARRANTIES OF PURCHASERS................................................68
              13.1.   Representations and Warranties of Each Purchaser............................................68

ARTICLE XIV           SUBORDINATION OF NOTES......................................................................69
              14.1.   Subordination of Notes......................................................................69

ARTICLE XV            TRANSFER OF SECURITIES......................................................................69
              15.1.   Restriction on Transfer.....................................................................69
              15.2.   Restrictive Legends.........................................................................70
              15.3.   Notice of Transfer..........................................................................71


ARTICLE XVI           MISCELLANEOUS...............................................................................72
              16.1.   Notices.....................................................................................72
              16.2.   Survival of Agreement.......................................................................73
              16.3.   Successors and Assigns......................................................................73
              16.4.   Expenses of the Holders.....................................................................73
              16.5.   Indemnification.............................................................................74
              16.6.   Third Party Claims..........................................................................76
              16.7.   Governing Law...............................................................................78
              16.8.   Waivers; Amendments.........................................................................79
              16.9.   Independence of Covenants...................................................................79
              16.10.  No Fiduciary Relationship...................................................................79
              16.11.  No Duty.....................................................................................80
              16.12.  Construction................................................................................80
              16.13.  Severability................................................................................80
              16.14.  Counterparts................................................................................80
              16.15.  Confidentiality.............................................................................80
              16.16.  Press Release...............................................................................83
              16.17.  Headings....................................................................................83
              16.18.  Entire Agreement............................................................................83







                                     ANNEXES

Annex A       -     Calculation of Investment Base


                                    EXHIBITS

Exhibit A     -     Form of Note
Exhibit B     -     Form of Certificate Accompanying Financial Statements
Exhibit C     -     Form of Certificate of Effectiveness
Exhibit D     -     Form of Company's Counsel Opinion
Exhibit E     -     Form of Subordinated Note Agreement Amendment
Exhibit F     -     Form of Senior Credit Agreement Amendment
Exhibit G     -     Form of Registration Rights Agreement


                                    SCHEDULES

Schedule 1    -     Disclosure Schedule
Schedule 2    -     Purchaser Information
Schedule 6.17 -     Post Closing Requirements








                            NOTE PURCHASE AGREEMENT

     This NOTE PURCHASE  AGREEMENT is dated as of October 29, 2004,  and entered
into by and among Carrizo Oil & Gas, Inc., a Texas  corporation (the "Company"),
the  purchasers   listed  on  Schedule  2  hereto,   (each  a  "Purchaser"   and
collectively,  the  "Purchasers") and PCRL Investments L.P., as Collateral Agent
(in such capacity, "Collateral Agent").
                                    RECITALS

     WHEREAS,   the  Company  is  engaged  in  the   exploration,   development,
exploitation  and  production  of  natural  gas  and  crude  oil  (the  "Subject
Business");

     WHEREAS, the Company desires to issue to the Purchasers and the Purchasers,
severally and not jointly, desire to purchase from the Company up to $28,000,000
in stated  principal  amount of its 10% Senior  Subordinated  Secured  Notes due
December 15, 2008 in the form of Exhibit A attached hereto (the "Notes"), on the
terms and for the  consideration  provided herein, in each case on the terms and
for the consideration provided herein;

     WHEREAS,  the proceeds of the Notes shall be used (i) to fund the Company's
working capital and (ii) for general corporate purposes;

     WHEREAS, the Company has agreed to secure all of its obligations  evidenced
by the Notes and this  Agreement by granting to the  Collateral  Agent,  for the
benefit  of the  holders  of the  Notes,  a second  priority  lien and  security
interest on  substantially  all of its assets,  including a pledge of all of the
ownership  interests of each of its  Subsidiaries  (other than its  Unrestricted
Subsidiaries (as hereinafter defined)); and

     WHEREAS,  the Notes and the liens and security interests securing the Notes
shall  be  subordinated,  to  the  extent  and  in the  manner  provided  in the
Subordination  Agreement (as hereinafter defined), to the senior credit facility
provided to the Company pursuant to the terms of the Senior Credit Agreement (as
hereinafter defined).

     NOW THEREFORE, the parties to this Agreement hereby agree as follows:

                                    ARTICLE I

                                   DEFINITIONS
                                   -----------

     As used in this Agreement:

     "Act" is defined in Section 5.15.

     "Additional  Closing  Date" means any one or more dates prior to the second
anniversary of the Closing Date upon which all of the  conditions  precedent set
forth in Section 4.3 have been satisfied.

     "Affiliate"  means,  as to any Person,  each other Person that  directly or
indirectly  (through


                                       1


one or more intermediaries or otherwise) controls, is controlled by, or is under
common  control with,  such Person and, for the avoidance of doubt shall include
the  investment  manager of any such  Person that is a Fund.  A Person  shall be
deemed to be  "controlled  by" any other Person if such other Person  possesses,
directly or  indirectly,  power:  (a) to vote 20% or more of the  securities  or
other equity  interests (on a fully diluted basis) having  ordinary voting power
for the election of directors,  the managing  general partner or partners or the
managing  member or  members  or (b) to direct  or cause  the  direction  of the
management and policies of such Person, whether by contract or otherwise.

     "Agreement"  means this note  purchase  agreement,  as it may be amended or
modified and in effect from time to time.

     "Annex"  refers to an annex  attached  to this  Agreement,  unless  another
document is specifically referenced.

     "Applicable Law" means all provisions of laws, statutes, ordinances, rules,
regulations,  permits,  certificates  or  orders of any  Governmental  Authority
applicable  to the Person in question or any of its assets or property,  and all
judgments,  injunctions,  orders and  decrees of all courts and  arbitrators  in
proceedings  or actions in which the Person in  question  is a party or by which
any of its assets or properties are bound.

     "Applicable Period" as defined in Section 16.15.

     "Approved  Counterparty" means (i) any Holder, any Affiliate of any Holder,
any Bank or any  Affiliate of any Bank and (ii) any other Person  engaged in the
business  of  writing  hedges  for  commodity  or  interest  rate  risk  that is
acceptable to the Collateral Agent and has, at the time Company or any Guarantor
enters into a Hedging Agreement with such Person, a credit rating of A or better
from S&P or Baa1 or better from Moody's.

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

     "Article"  means an article of this Agreement  unless  another  document is
specifically referenced.

     "Authorized  Officer" means,  as to any Person,  any of its Chairman of the
Board, its Chief Executive Officer, its President,  its Directors,  its Managers
(in the case of a limited liability  company),  or its Chief Financial  Officer,
acting singly.

     "Bank"  means any  Person  from time to time a party to the  Senior  Credit
Agreement as a lender and "Banks" means all Banks.

     "Bloomberg" means Bloomberg Financial Markets.

     "Board" means the board of directors of the Company.

     "Borrowing  Base" means,  individually  and  collectively,  the "Facility A
Borrowing  Base


                                       2


Amount" and the  "Facility B  Borrowing  Base  Amount" as such terms are defined
from time to time in the Senior  Credit  Agreement  (or as such similar terms or
the term "Borrowing Base" is defined in any replacement Senior Credit Agreement)
unless all of the Obligations  under the Senior Credit  Documents have been paid
in full  and all  commitments  under  the  Senior  Credit  Agreement  have  been
terminated  and no  replacement  Senior  Credit  Agreement is in effect in which
event "Borrowing Base" shall be an amount  determined by the Majority Holders as
of May 1 and November 1 of each year based on the most recent Engineering Report
delivered  pursuant to Section 6.1(f) and Section  6.1(h),  respectively  unless
such Engineering  Reports have not been requested by the Collateral Agent or the
Majority  Holders,  in which  event  the  "Borrowing  Base"  shall be an  amount
determined by the Majority  Holders based on the Company's  most recently  filed
Commission Reports.

     "Business  Day" means any day,  other than a Saturday,  Sunday or day which
shall be in the State of Texas or the State of New York a legal  holiday  or day
on which banking institutions are required or authorized to close.

     "Capital  Lease" means a lease with respect to which the lessee is required
concurrently  to recognize the  acquisition  of an asset and the incurrence of a
liability in accordance with GAAP.

     "Capital Lease Obligations" means any Debt represented by obligations under
a Capital Lease.

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

     "CCBM" means CCBM, Inc., a Texas corporation.

     "Certificate of Effectiveness"  means a Certificate of Effectiveness in the
form of  Exhibit  C  attached  hereto  to be  executed  by the  Company  and the
Collateral  Agent  upon the  satisfaction  of each of the  conditions  precedent
contained in Section 4.1 hereof.

     "Change of Control"  means the  occurrence of any of the following  events:
(i) the Company shall have merged into or consolidated with any other Person, or
permitted any other Person to merge into or consolidate with it or sold,  leased
or sub-leased (as lessor or sub-lessor) or voluntarily  transferred or otherwise
disposed of all or  substantially  all of its assets or liquidated,  wound-up or
dissolved itself (or suffered any liquidation or dissolution in any such case in
a transaction  that would violate Section 7.1 or 7.2, (ii) any "person" (as such
term is used in  Sections  13(d)  and 14 (d) of the  Exchange  Act)  other  than
Purchaser  or any of its  Affiliates  or  managed  accounts  is or  becomes  the
beneficial  owner (as  defined  in Rules  13d-3 and 13d-5 of the  Exchange  Act;
provided that such person shall be deemed to have "beneficial  ownership" of all
shares  that  such  person  has the  right to  acquire,  whether  such  right is
exercisable  immediately  or only  after  the  passage  of  time),  directly  or
indirectly, of more than 35% of the total voting power of the outstanding voting
securities of the Company;  or (iii) during any period of two


                                       3


consecutive  years,  individuals who at the beginning of such period constituted
the Board (together with any new directors whose election by such members of the
Board or whose  nomination for election by the  shareholders of the Company,  as
the case may be, was approved by a vote of at least a majority of the  directors
of the  Company  then still in  office)  cease for any  reason to  constitute  a
majority of the Board then in office.  Notwithstanding the foregoing,  no Change
of Control  shall be deemed to have  occurred  pursuant to this  Agreement  as a
result of any other Person becoming the beneficial owner of more than 35% of the
total voting power to the extent caused solely by the attribution to that Person
of the beneficial  ownership of voting power owned by another Person that is not
an  Affiliate  of such Person who is then a party to a  customary  shareholder's
agreement  and is a member of a group with such other Person  solely  because of
such shareholders'  agreement, a voting agreement, tag along rights and not as a
result of the acquisition of securities of the Company by such Person.

     "Change of Control Notice" is defined in Section 3.5(b).

     "Closing  Date" means the date upon which all of the  conditions  precedent
set forth in Section 4.1 have been satisfied, and the Company and the Collateral
Agent have executed and delivered the Certificate of Effectiveness.

     "Closing  Documents" means the  Subordination  Agreement,  the Subordinated
Note Agreement  Amendment,  and all other material  documents,  instruments  and
agreements executed or delivered by any Restricted Person in connection with, or
otherwise pertaining to, the Closing Transactions.

     "Closing Transactions" means the transactions to occur on the Closing Date,
including,  without  limitation (a) the amendment of the Senior Credit Agreement
pursuant to the Senior Credit Agreement Amendment,  and (b) the amendment of the
Subordinated  Note  Agreement   pursuant  to  the  Subordinated  Note  Agreement
Amendment.

     "Collateral"  means all  property of any kind which is subject to a Lien in
favor of  Holders  (or in favor  of the  Collateral  Agent  for the  benefit  of
Holders) or which, under the terms of any Security Document,  is purported to be
subject to such a Lien.

     "Collateral  Agent" has the meaning  assigned to such term in the  preamble
hereto and shall include any successor  appointed pursuant to Section XI of this
Agreement.

     "Commission" means the United States Securities and Exchange Commission.

     "Commission  Reports" means the annual reports,  information  documents and
other  reports as are  specified in Section 13 and 15(d) of the Exchange Act and
applicable to a U.S. corporation subject to such Sections.

     "Common  Stock" means the common stock,  par value $0.01 per share,  of the
Company or Capital Stock of any other class into which such shares may hereafter
have been reclassified or changed.

     "Company" has the meaning  ascribed to such term in the preamble hereto and
shall


                                       4


include its successors and assigns.

     "Competitor"  means (i) any Person who is  actively  engaged in the Subject
Business and (ii) any  Affiliate of a Person  identified in clause (i) above (it
being  agreed  that an  investment  firm shall not be deemed to control a Person
described in clause (i) above  merely as a result of owning a minority  interest
in such Person if it does not otherwise control such Person).

     "Consolidated"  refers to the  consolidation  of any Person,  in accordance
with GAAP, with its properly consolidated  Subsidiaries.  References herein to a
Person's  Consolidated  financial  statements,   financial  position,  financial
condition,  liabilities,  etc. refer to the consolidated  financial  statements,
financial position,  financial condition,  liabilities,  etc. of such Person and
its properly consolidated Subsidiaries.

     "Debt" shall mean without duplication: (i) indebtedness for borrowed money;
(ii) the face  amounts of all  outstanding  standby  and  commercial  letters of
credit and bankers  acceptances,  matured or unmatured,  issued on behalf of the
Company;  (iii)  guaranties of the Debt of any other Person,  whether  direct or
indirect,  whether by agreement to purchase the indebtedness of any other Person
or by agreement  for the  furnishing  of funds to any other  Person  through the
purchase or lease of goods,  supplies or services (or by way of stock  purchase,
capital contribution, advance or loan) in each case for the purpose of paying or
discharging  the Debt of any other  Person;  and (iv) the  present  value of all
obligations  for the  payment of rent or hire of  property  of any kind (real or
personal)  under leases or lease  agreements  required to be  capitalized  under
GAAP; provided that (x) in no event shall the Company's obligations under and in
connection  with any Series B Preferred Stock issued by the Company prior to the
Closing Date  constitute Debt and (y) any Series B Preferred Stock issued by the
Company after the Closing Date shall constitute Debt.

     "Default"  means any Event of Default and any  default,  event or condition
which  would,  with the giving of any  requisite  notices and the passage of any
requisite periods of time, constitute an Event of Default.

     "Defensible  Title"  shall mean,  with respect to the assets of the Company
(i) the title of the  Company  to such  assets is free and clear of all Liens of
any kind whatsoever (except to the extent permitted by the Documents),  and (ii)
as to those wells for which a "working  interest"  and a "net revenue  interest"
are set forth on the Disclosure  Schedule  (except to the extent  disposed of or
abandoned in accordance with the Documents),  the Company is entitled to receive
the percentage of all hydrocarbons produced,  saved and marketed from such wells
in an amount not less than the net revenue  interest set forth therein,  without
reduction,  suspension or termination  throughout the duration of the productive
life of such wells, and the Company is obligated to bear the percentage of costs
and expenses related to the maintenance, development and operation of such wells
in an amount not greater than the working  interest set forth on the  Disclosure
Schedule,  without increase throughout the productive life of such wells, except
increases that also result in a proportionate  increase in net revenue  interest
and as set forth on the Disclosure Schedule.

     "Designated Title Exceptions" is defined in Section 5.3.

                                       5


     "Disclosure Notice" as defined in Section 16.15.

     "Disclosure Schedule" means Schedule 1 hereto.

     "Disqualified Stock" means any Capital Stock which, by its terms (or by the
terms  of  any  security  into  which  it is  convertible  or  for  which  it is
exchangeable),  or upon the  happening of any event,  matures or is  mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or is redeemable
at the sole option of the holder  thereof,  in whole or in part,  on or prior to
the Maturity  Date;  provided,  that any Capital Stock that would not constitute
Disqualified  Stock but for provisions thereof giving holders thereof the rights
to require the issuer of such Capital Stock to repurchase or redeem such Capital
Stock upon the  occurrence  of (x) an "asset sale" or a "change of control" that
also results in a Change of Control shall not constitute  Disqualified  Stock or
(y) a  "default"  or an "event of  default"  shall not  constitute  Disqualified
Stock; provided further, that in each case with respect to the foregoing clauses
(x) and (y), the obligations of the Company to repurchase or redeem such Capital
Stock is required  only if permitted  under the terms of this  Agreement or with
the consent of the Majority  Holders or such obligations are subordinated to the
Indebtedness  on terms and conditions  reasonably  satisfactory  to the Majority
Holders.

     "Documents"  means,   collectively,   this  Agreement,   the  Subordination
Agreement,  the Notes, the Registration Rights Agreement, the Security Documents
and all other agreements,  certificates,  documents, instruments and writings at
any time delivered in connection herewith or therewith (exclusive of term sheets
and commitment letters).

     "Dollar", "Dollars" and the sign "$" mean lawful money of the United States
of America.

     "EBITDA" means the Company's consolidated earnings before interest expense,
income  taxes,  depreciation,   amortization,   depletion,  oil  and  gas  asset
impairment write downs, lease impairment expense, gains and losses from the sale
of  capital  assets,  and  other  non-cash  charges;  provided  that none of the
following shall be included in the  determination  of the EBITDA of the Company:
(i) the  earnings  (or losses) of any Person  which is not a  Subsidiary  of the
Company or is accounted for by the Company by the equity  method of  accounting,
(ii) any non-cash gains or losses,  if any,  resulting from the repricing of any
stock  options  issued by the  Company,  or (iii) any  non-cash  gains or losses
resulting  from the  application  of FASB  Statement 133 or the  application  of
ceiling  test   write-downs  made  pursuant  to  Rule  4.10  of  Regulation  S-X
promulgated by the Commission.

     "Eligible  Market" means the New York Stock  Exchange,  the American  Stock
Exchange,  the NASDAQ  National Market and the NASDAQ SmallCap Market (or any of
their respective successors).

     "Engineering  Report"  means each  engineering  report,  if any,  delivered
pursuant to Section 6.1(f) or 6.1(h).

     "Environmental  Laws"  shall  mean any  federal,  state,  local  or  tribal
statute, law, rule,  regulation,  ordinance,  code, permit,  consent,  approval,
license,  written policy or rule of common


                                       6


law now or hereafter in effect and in each case as amended,  and any judicial or
administrative  interpretation thereof, including any judicial or administrative
order,  injunction,  consent  decree  or  judgment,  or other  authorization  or
requirement whenever promulgated,  issued or modified, including the requirement
to  register   underground   storage  tanks,   well  plugging  and   abandonment
requirements, and oil and gas waste disposal requirements relating to:

          (i) emissions,  discharges,  spills, migration,  movement, releases or
     threatened releases of pollutants,  contaminants,  Hazardous Materials,  or
     hazardous  or toxic  materials or wastes into or onto soil,  land,  ambient
     air, surface water,  ground water,  watercourses,  publicly owned treatment
     works, drains, sewer systems, wetlands or septic systems;

          (ii) the use, treatment,  storage, disposal, handling,  manufacturing,
     transportation,  or shipment of Hazardous  Materials  or  hazardous  and/or
     toxic  wastes,  material,  products  or  by-products  containing  Hazardous
     Materials (or of equipment or apparatus containing Hazardous Materials); or

          (iii)  otherwise  relating to  pollution  or the  protection  of human
     health or the environment, including, without limitation, the Comprehensive
     Environmental Response,  Compensation, and Liability Act of 1980, 42 U.S.C.
     ss.ss.  9601 et seq., as amended,  the Resource  Conservation  and Recovery
     Act, 42 U.S.C.  ss.ss.  6901 et seq., as amended,  the Hazardous  Materials
     Transportation  Act, 49 U.S.C.  ss.ss. 1801 et seq., as amended,  the Clean
     Water Act, 33 U.S.C. ss.ss. 1251 et seq., as amended,  the Toxic Substances
     Control Act, 15 U.S.C. ss.ss. 2601 et seq., as amended,  the Clean Air Act,
     42 U.S.C.  ss.ss.  7401 et seq., as amended,  the federal  Water  Pollution
     Control  Act, 33 U.S.C.  ss. 1251 et seq.,  as amended,  the Safe  Drinking
     Water Act, 42 U.S.C.  ss.ss.  300f et seq.,  as amended,  the Atomic Energy
     Act, 42 U.S.C.  ss.ss.  2011 et seq., as amended,  the Natural Gas Pipeline
     Safety Act of 1968,  49 U.S.C.  ss. 1671 et seq.,  as amended,  the Federal
     Insecticide, Fungicide and Rodenticide Act, 7 U.S.C. ss.ss. 136 et seq., as
     amended,  and the Occupational  Safety and Health Act, 29 U.S.C. ss.ss. 651
     et seq., as amended, and all comparable statutes of the States of Louisiana
     and Texas,  and all  comparable  local  Governmental  Requirements  in such
     states, and other environmental,  conservation or protection laws in effect
     in any  jurisdiction  where any of the Mortgaged  Properties of the Company
     are located.

     "Environmental  Liabilities"  means with respect to any Person, any and all
liabilities,  responsibilities,  losses,  sums  paid in  settlement  of  claims,
obligations,  charges, actions (formal or informal), claims (including,  without
limitation,   claims  for  personal  injury  or  for  property  damage),  liens,
administrative  proceedings,  damages (including,  without  limitation,  loss or
damage resulting from the occurrence of an Event of Default),  punitive damages,
consequential  damages,  treble damages,  penalties,  fines, monetary sanctions,
interest,  court costs,  response and remediation  costs,  stabilization  costs,
encapsulation  costs,  treatment,   storage,  or  disposal  costs,   groundwater
monitoring or environmental sampling costs, other causes of action and any other
costs  and  expenses  (including,  without  limitation,  reasonable  attorneys',
experts',  and consultants' fees, costs of investigation and feasibility studies
and  disbursements  in  connection  with any  investigative,  administrative  or
judicial proceeding),  whether direct or indirect, known or unknown, absolute or
contingent,  past, present or future arising under, pursuant to or in


                                       7


connection with any Environmental  Law, or any other binding  obligation of such
Person  requiring  abatement of pollution or  protection of human health and the
environment.

     "Environmental  Lien" means a Lien in favor of any  Governmental  Authority
for (i) any liability under  Environmental Laws or (ii) damages arising from, or
costs  incurred by such  Governmental  Authority  in  response  to, a Release or
threatened Release of a Hazardous Materials into the environment.

     "Equity  Conditions"  means, with respect to a specified issuance of Common
Stock,  that each of the following  conditions  is satisfied:  (i) the number of
authorized  but  unissued  and  otherwise  unreserved  shares of Common Stock is
sufficient  for such issuance and such shares will be issued in compliance  with
Section  3.2(i);  (ii) on and including the date of any Stock Payment  Notice to
and  including the Issue Date to which such Stock Payment  Notice  relates,  the
Common Stock shall be listed on an Eligible  Market and  delisting or suspension
by such market or exchange shall not have been threatened  either (A) in writing
by such market or exchange  or (B) by falling  below for at least the  requisite
period the applicable  minimum quantative  listing  maintenance  requirements of
such  market  or  exchange;  (iii) the  shares  of Common  Stock to be issued in
payment of any  Indebtedness  on such date of  determination  are, to the extent
required,  approved for listing on an Eligible Market upon issuance; (iv) on any
day during an Interest  Measuring Period, a Maturity Date Measuring Period and a
Voluntary Prepayment Measuring Period, as applicable, the Common Stock shall not
have  fallen  below,  for three (3)  consecutive  Trading  Days  during any such
period,  the minimum bid or trading  price for any Eligible  Market on which the
Common  Stock is then  quoted or listed;  (v) on and  including  the date of any
Stock Payment Notice to and including the Issue Date to which such Stock Payment
Notice relates,  there shall not have occurred a Significant Default or an Event
of Default other than a Significant Default or an Event of Default that has been
waived or has been cured  within the cure period  specified  in Section  8.1(b);
(vi)  on the  applicable  date of  determination  either  (A)  the  Registration
Statement or Registration  Statements  contemplated pursuant to the Registration
Rights  Agreement  shall be effective and available for the resale of all of the
Registrable  Securities in accordance with the terms of the Registration  Rights
Agreement  or (B)  all  shares  of  Common  Stock  issuable  in  payment  of the
Indebtedness  on the terms  permitted under this Agreement shall be eligible for
legend removal in accordance  with the provisions of Rule 144(k) upon request by
the holder thereof and applicable  state  securities  laws; (vii) on any date of
determination,  if the aggregate  number of shares of Common Stock issued to the
Holders during the period of six (6)  consecutive  calendar  months  immediately
preceding  such date and then held by the Holders on such date together with the
shares of Common Stock to be issued on such date (or with respect to the date of
the Stock Payment Notice, proposed to be issued and calculated based on issuance
of such  shares at the Floor  Price or if no Floor  Price is  specified,  at the
Volume Weighted  Average Price for the applicable  Measurement  Period as if the
date of the Stock  Payment  Notice was the Issue Date)  exceeds one and one-half
percent  (1.50%) of the Common Stock issued and  outstanding  on such date,  the
Company shall have no knowledge of any material fact not previously disclosed to
the  public  that is  reasonably  likely  to cause the  Registration  Statements
required  pursuant to the Registration  Rights Agreement not to be effective and
available for the resale of not less than all of the  Registrable  Securities in
accordance  with the terms of the  Registration  Rights  Agreement;  (viii)  the
Company is current in its periodic filing obligations under the Exchange Act and
the rules of any Eligible Market on


                                       8


which the Common Stock is then either listed or quoted  (determined by including
any  safe  harbors  provided  by Form 8-K and  grace  periods  pursuant  to Rule
12b-25);  and (ix) any  applicable  shares  of  Common  Stock  to be  issued  in
connection with the event requiring  determination may be issued in full without
violating Section 3.2(f) or the rules or regulations of the applicable  Eligible
Market.

     "ERISA"  means the Employee  Retirement  Income  Security  Act of 1974,  as
amended from time to time, and any successor statutes or statute,  together with
all rules and regulations promulgated with respect thereto.

     "Event of Default" has the meaning given to such term in Section 8.1.

     "Exchange Act" means the  Securities  Exchange Act of 1934, as amended from
time to time, and any successor statute or law thereto.

     "Exhibit" refers to an exhibit  attached to this Agreement,  unless another
document is specifically referenced.

     "Fiscal  Quarter"  means a three-month  period ending on March 31, June 30,
September 30 or December 31 of any year.

     "Floor  Price"  means,  as applicable  for any payment of  Indebtedness  in
Common Stock permitted under this  Agreement,  the minimum  Maturity Date Price,
Interest Payment Price or Voluntary  Redemption Price, if any,  specified by the
Company in any notice  delivered  to  Collateral  Agent and Holders  pursuant to
Sections 3.3(b), 3.5 or 3.6, respectfully.

     "Floor Price Portion" is defined in Section 3.6.

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

     "GAAP" shall mean, at any time, accounting principles generally accepted in
the United States as then in effect.

     "Governmental Authority" shall mean any nation or government,  any state or
other  political   subdivision   thereof,   or  entity   exercising   executive,
legislative,  judicial,  regulatory or administrative functions of or pertaining
to government.

     "Governmental  Requirement"  shall mean any  applicable  state,  federal or
local law, statute, ordinance, code, rule, regulation, order or decree.

     "Guarantors" means CCBM and any other Person who has guaranteed some or all
of the Indebtedness and who has been accepted by Collateral Agent as a Guarantor
and any Subsidiary of the Company which now or hereafter executes and delivers a
Guaranty to Collateral Agent pursuant to Section 6.15.

                                       9


     "Guaranty"  means  individually and  collectively  that certain  Commercial
Guaranty  of even date with this  Agreement  by CCBM in favor of the  Collateral
Agent for the ratable  benefit of the Holders,  as amended and/or  restated from
time to time and in effect, and any Commercial  Guaranty executed after the date
of this  Agreement  by a  Subsidiary  in favor of the  Collateral  Agent for the
ratable benefit of the Holders, as amended and/or restated from time to time and
in effect.

     "Hazardous Materials" means (1) hazardous materials,  hazardous wastes, and
hazardous substances including, but not limited to, those substances,  materials
and wastes listed in the United States  Department of  Transportation  Hazardous
Materials  Table, 49 C.F.R.  ss. 172.101,  as amended,  or listed by the federal
Environmental  Protection Agency as hazardous substances under or pursuant to 40
C.F.R. Part 302, as amended,  or substances,  materials,  contaminants or wastes
which are or become regulated under any  Environmental  Law,  including  without
limitation,  those substances,  materials,  contaminants or wastes as defined in
the  following  statutes  and  their  implementing  regulations:  the  Hazardous
Materials  Transportation  Act,  49 U.S.C.  ss. 1801 et seq.,  as  amended,  the
Resource  Conservation and Recovery Act, 42 U.S.C. ss. 6901 et seq., as amended,
the  Comprehensive  Environmental  Response,  Compensation and Liability Act, 42
U.S.C. ss. 9601 et seq., as amended, the Toxic Substances Control Act, 15 U.S.C.
ss. 2601 et seq., as amended,  the Clean Air Act, 42 U.S.C. ss. 7401 et seq., as
amended, the federal Water Pollution Control Act, 33 U.S.C. ss. 1251 et seq., as
amended,  the  Occupational  Safety and Health Act, 2 U.S.C. ss. 651 et seq., as
amended,  the Safe Drinking Water Act, 42 U.S.C. ss.300f et seq., as amended and
the Natural Gas  Pipeline  Safety Act of 1968,  49 U.S.C.  ss. 1671 et seq.,  as
amended;  (2) all  substances,  materials,  contaminants or wastes listed in all
comparable statutes of the States of Louisiana and Texas and in comparable local
Governmental  Requirements  in such states;  (3) acid gas, sour water streams or
sour water vapor streams containing  hydrogen sulfide or other forms of sulphur,
sodium  hydrosulfide and ammonia;  (4) Hydrocarbons;  (5) natural gas, synthetic
gas, and any mixtures  thereof;  (6) asbestos and/or any material which contains
1% or more,  by weight,  of any hydrated  mineral  silicate,  including  but not
limited to chrysotile,  amosite,  crocidolite,  tremolite,  anthophylite  and/or
actinolite,  whether  friable  or  non-friable;  (7)  PCB's,  or PCB  containing
materials or fluids; (8) radon; (9) naturally  occurring  radioactive  material,
radioactive  substances  or waste;  (10) salt water and other oil and gas wastes
and  (11)  any  other  hazardous  or  noxious  substance,  material,  pollutant,
emission, or solid, liquid or gaseous waste.

     "Hedging Agreement" means (a) any interest rate or currency swap, rate cap,
rate floor, rate collar, forward agreement, or other exchange or rate protection
agreement  or any option with respect to any such  transaction  and (b) any swap
agreement, cap, floor, collar, exchange transaction, forward agreement, or other
exchange  or  protection   agreement   relating  to  any  commodity,   including
Hydrocarbons, or any option with respect to any such transaction.

     "Highest Lawful Rate" shall mean, on any day, the maximum  nonusurious rate
of interest  permitted for that day by whichever of applicable  federal or Texas
law permits the higher  interest rate,  stated as a rate per annum. On each day,
if any, that Chapter 303 of the Texas Finance  Code, as amended  (formerly  Tex.
Rev. Civ. Stat. Ann. Art. 5069-1D.003) establishes the Highest Lawful Rate, such
rate shall be the  "indicated  (weekly) rate ceiling" (as defined in Chapter 303
of the Texas Finance Code, as amended) for that day.

                                       10


     "Holder" or "Holders"  means each Purchaser (so long as it holds any Notes)
and any other holder of any of the Notes.

     "Hydrocarbons"  means oil, gas,  casing head gas,  condensate,  distillate,
liquid hydrocarbons,  gaseous  hydrocarbons and all products separated,  settled
and dehydrated therefrom and all products refined therefrom,  including, without
limitation,  kerosene, liquefied petroleum gas, refined lubricating oils, diesel
fuel, drip gasoline, natural gasoline, helium, sulphur and all other materials.

     "Indebtedness"  means,  at any time,  all  obligations,  indebtedness,  and
liabilities,  whether  now  existing  or arising in the  future,  of the Company
and/or any Guarantor to the  Collateral  Agent or the Holders or any of them (or
in the case of a Hedging Agreement any Affiliate  thereof) pursuant to a Hedging
Agreement or other  commodity or price  management  transaction  (including  all
renewals, extensions,  modifications, and substitution thereof and therefor) and
all cancellations, buy backs, reversals, terminations, or assignments of Hedging
Agreements,  and the  indebtedness,  liabilities  and obligations of the Company
evidenced  by  any   Document,   including   principal,   interest,   repurchase
obligations,  costs,  expenses and reasonable attorneys' fees and all other fees
and charges,  together with all commitment fees and other indebtedness and costs
and expenses for which the Company  and/or any  Guarantor is  responsible  under
this  Agreement  or  under  any  of  the  Documents  (including  the  repurchase
obligations  of  the  Company  under  the  Registration  Rights  Agreement).  In
addition,  the word  "Indebtedness"  also  includes,  any and all  other  loans,
extensions of credit,  obligations,  debts and liabilities of the Company,  plus
interest thereon, that may now and in the future be owed to or incurred in favor
of the  Collateral  Agent  and/or  the  Holders,  as well as all  claims  by the
Collateral  Agent and/or the Holders  against the Company  and/or any Guarantor,
whether existing now or later; whether they are voluntary or involuntary, due or
to become  due,  direct  or  indirect  or by way of  assignment,  determined  or
undetermined,  absolute or contingent,  liquidated or unliquidated;  whether the
Company may be liable  individually or jointly with others,  of every nature and
kind  whatsoever,  in  principal,   interest,  costs,  expenses  and  reasonable
attorneys'  fees and all other fees and charges;  whether the Company and/or any
Guarantor   may  be   obligated  as  principal   obligor,   guarantor,   surety,
accommodation party or otherwise.

     "Indemnified Person" has the meaning ascribed to such term in Section 16.5.

     "Indemnifying  Person"  has the  meaning  ascribed  to such term in Section
16.6.

     "Initial Notes" has the meaning ascribed to such term in Section 2.1.

     "Interest Expense" means, for any period, total interest expense (including
that portion  attributable to Capital Lease  Obligations in accordance with GAAP
and  capitalized  interest)  of the  Company  and its  Subsidiaries  (other than
Unrestricted   Subsidiaries)  on  a  consolidated  basis  with  respect  to  all
outstanding  Obligations  of  the  Company  and  its  Subsidiaries  (other  than
Unrestricted  Subsidiaries) to the extent the promissory notes,  leases or other
instruments or agreements  evidencing  such  Obligations  require the payment of
such interest in cash during such period.

                                       11


     "Interest Payment Notice" is defined in Section 3.3(b).

     "Interest  Payment  Price" means,  with respect to any Payment  Date,  that
price which shall be  computed  as 90% of the  arithmetic  average of the Volume
Weighted  Average Price of the Common Stock on each of the ten (10)  consecutive
Trading Days  immediately  preceding (but not including) the Trading Day that is
two (2) Trading Days prior to such Payment  Date (each,  an "Interest  Measuring
Period").  All such  determinations  to be appropriately  adjusted for any stock
split,  stock dividend,  stock combination or other similar  transaction  during
such Interest Measuring Period.

     "Internal  Revenue Code" means the United States  Internal  Revenue Code of
1986,  as  amended  from time to time and any  successor  statute  or  statutes,
together with all rules and regulations promulgated with respect thereto.

     "Investment"  means any  investment,  made directly or  indirectly,  in any
Person,  whether by purchase,  acquisition of equity interests,  indebtedness or
other  obligations  or  securities  or by  extension of credit,  loan,  advance,
capital  contribution  or otherwise and whether made in cash, by the transfer of
property, or by any other means.

     "Investment Base" means (i) as of the Closing Date,  $28,000,000,  and (ii)
after the Closing Date,  the amount  determined in accordance  with Section 6.18
less,  in each case with  respect to the  foregoing  clauses  (i) and (ii),  any
Quarterly  Reduction  as and when  applied in  accordance  with the terms of the
Senior Credit Agreement.

     "Issue Date" means with respect to any payment of the  Indebtedness  by the
issuance of Common Stock pursuant to Section 3.3(b), 3.5 or 3.6, as the case may
be, the date the Company is obligated to issue such Common Stock.

     "Law"  means  any  statute,  law,  regulation,   ordinance,  rule,  treaty,
judgment, order, decree, permit,  concession,  franchise,  license, agreement or
other  governmental  restriction  of the United States or any state or political
subdivision  thereof or of any foreign  country or any  department,  province or
other  political  subdivision  thereof.  Any  reference  to a Law  includes  any
amendment or modification to such Law, and all regulations,  rulings,  and other
Laws promulgated under such Law.

     "Leases"  shall mean all present and future oil, gas and mineral  leases or
interests therein now owned or hereafter  acquired by the Company that form part
of the Mortgaged Properties.

     "Liabilities"  means, as to any Person,  all indebtedness,  liabilities and
obligations  of  such  Person,  whether  matured  or  unmatured,  liquidated  or
unliquidated,  primary or  secondary,  direct or  indirect,  absolute,  fixed or
contingent, and whether or not required to be considered pursuant to GAAP.

     "Liens" means any interest in property securing an obligation owed to, or a
claim by,  Guarantor,  a Person other than the owner of such  property,  whether
such interest is based on common law, statute or contract. The term "Lien" shall
also include reservations, exceptions, encroachments,  easements, rights-of-way,
covenants,  conditions,  restrictions,  leases and other


                                       12


title exceptions and  encumbrances  affecting  property.  For the purpose of the
Agreement, the Company and each Guarantor shall be deemed to be the owner of any
property which it has acquired or holds subject to a conditional  sale agreement
or other arrangements  pursuant to which title to the property has been retained
by or vested in some other Person for security purposes; provided, however, that
the term "Lien" shall not include a trust or similar arrangement established for
the purpose of defeasing any Debt pursuant to the terms  evidencing or providing
for the  issuance  of such Debt but only to the extent that such  defeasance  is
permitted under this Agreement.

     "Losses" has the meaning ascribed to such term in Section 16.5.

     "Majority  Holders" means, at any time, the Holder or Holders of at least a
majority in aggregate outstanding principal amount of the Notes.

     "Material  Adverse  Effect" shall mean,  with respect to the Company and/or
the  Guarantor,  as the case may be, an event  which  causes a material  adverse
effect on the business, assets, operations or condition (financial or otherwise)
of such Person.

     "Maturity Date" means December 15, 2008.

     "Maturity Date Floor Price Portion" is defined in Section 3.5(a).

     "Maturity Date Payment Notice" is defined in Section 3.5(a).

     "Maturity  Date  Price"  means,  with  respect  to the  payment  due on the
Maturity  Date,  that price which  shall be  computed  as 90% of the  arithmetic
average of the Volume Weighted  Average Price of the Common Stock on each of the
thirty (30) consecutive  Trading Days immediately  preceding (but not including)
the  Trading Day that is two (2) Trading  Days prior to the  Maturity  Date (the
"Maturity Date Measuring  Period").  All such determinations to be appropriately
adjusted for any stock split, stock dividend, stock combination or other similar
transaction during the Maturity Date Measuring Period.

     "Maximum Shares" is defined in Section 3.2(f).

     "Maximum Percentage" is defined in Section 3.2(f).

     "Measurement  Period" means any Interest  Measuring Period, a Maturity Date
Measuring Period or a Voluntary  Prepayment  Measuring  Period, in each case, as
extended pursuant to Section 16.15.

     "Mortgaged Properties" shall mean the property and interests of the Company
and/or any Guarantor that are encumbered by the Mortgages.

     "Mortgages" means, collectively,  all deeds of trust and mortgages included
in the Security Documents.

                                       13


     "Non-Recourse Indebtedness" shall mean Obligations owed by the Guarantor to
Rocky Mountain Gas,  Inc.,  and  Obligations of the Company and/or any Guarantor
for  which  the  Company  and/or  any  Guarantor,  as the case  may be,  are not
personally liable for payment of the Obligations.

     "Notes" has the meaning ascribed to such term in the recitals hereto.

     "Note Register" has the meaning ascribed to such term in Section 3.7(a).

     "Obligations"  of any  Person  means  Liabilities  in any of the  following
categories:  (a) Liabilities for borrowed money; (b) Liabilities constituting an
obligation  to pay the  deferred  purchase  price of property or  services;  (c)
Liabilities  evidenced by a bond,  debenture,  note or similar  instrument;  (d)
Liabilities  which (i) would under GAAP be shown on such Person's  balance sheet
as a  liability,  and  (ii) are  payable  more  than  one year  from the date of
creation or incurrence  thereof  (other than reserves for taxes and reserves for
contingent obligations);  (e) Liabilities arising under Hedging Agreements (on a
net basis to the  extent  netting  is  provided  for in the  applicable  Hedging
Agreements);  (f) Liabilities  constituting  principal under Capital Leases; (g)
Liabilities arising under conditional sales or other title retention agreements;
(h) Liabilities owing under direct or indirect  guaranties of Liabilities of any
other Person or otherwise constituting  obligations to purchase or acquire or to
otherwise protect or insure a creditor against loss in respect of Liabilities of
any  other  Person  (such  as  obligations  under  working  capital  maintenance
agreements,  agreements  to keep-well,  or  agreements to purchase  Liabilities,
assets,  goods,  securities or  services),  but  excluding  endorsements  in the
ordinary  course  of  business  of  negotiable  instruments  in  the  course  of
collection;  (i) Liabilities (for example,  repurchase agreements,  Disqualified
Stock  (but not  accrued  dividends  on  preferred  stock),  and  sale/leaseback
agreements)  consisting  of an  obligation  to purchase or redeem  securities or
other property,  if such Liabilities arise out of or in connection with the sale
or issuance of the same or similar securities or property;  (j) Liabilities with
respect  to  letters  of  credit or  applications  or  reimbursement  agreements
therefore; (k) Liabilities with respect to banker's acceptances; (l) Liabilities
with  respect to  payments  received  in  consideration  of oil,  gas,  or other
minerals  yet to be  acquired  or  produced  at the time of  payment  (including
obligations under "take-or-pay"  contracts to deliver gas in return for payments
already received and the undischarged  balance of any production payment created
by such Person or for the creation of which such Person  directly or  indirectly
received  payment);  or (m)  Liabilities  with respect to other  obligations  to
deliver  goods or  services  in  consideration  of  advance  payments  therefor;
provided,  however,  that the  "Obligations"  of any  Person  shall not  include
Liabilities  that were  incurred  by such  Person  on  ordinary  trade  terms to
vendors,  suppliers,  or other Persons  providing  goods and services for use by
such  Person in the  ordinary  course of its  business,  unless  and until  such
Liabilities  are  outstanding  more than 90 days past the  original  invoice  or
billing date therefor.

     "Oil and Gas Properties" means all oil, gas and/or mineral leases, oil, gas
or mineral  properties,  mineral  servitudes  and/or  mineral rights of any kind
(including,  without limitation, mineral fee interests, lease interests, farmout
interests,  overriding royalty and royalty interests, net profits interests, oil
payment  interests,  production  payment  interests  and other  types of mineral
interests), and all oil and gas transportation,  gathering,  treating,  storage,
processing and


                                       14


handling assets.

     "Organizational  Documents" means (a) with respect to any corporation,  its
certificate or articles of incorporation or  organization,  as amended,  and its
by-laws,  as  amended,  (b)  with  respect  to  any  limited  partnership,   its
certificate of limited partnership,  as amended, and its partnership  agreement,
as  amended,  (c) with  respect  to any  general  partnership,  its  partnership
agreement,  as amended,  and (d) with respect to any limited liability  company,
its  articles of  organization,  as amended,  and its  operating  agreement,  as
amended.

     "Payment Date" means the 5th day of March, June,  September and December of
each year.

     "PCRL" has the  meaning  assigned to such term in the  preamble  hereto and
shall include is successors.

     "Permitted  Liens" shall have the meaning  ascribed to such term in Section
7.4. hereof.

     "Person" means an individual,  corporation,  general  partnership,  limited
partnership,  limited liability company, association, joint stock company, trust
or trustee thereof,  estate or executor thereof,  Tribunal, or any other legally
recognizable entity.

     "Pinnacle" means Pinnacle Gas Resources, Inc., a Delaware corporation.

     "Principal Market" means the Nasdaq National Market.

     "Purchase   Money   Indebtedness"   means  Debt  incurred  to  finance  the
acquisition,  construction  or  improvement  of any  fixed  or  capital  assets,
including Debt assumed in connection  with the acquisition of any such assets or
secured by a Lien on any such assets prior to the acquisition  thereof,  and any
extension, renewal or replacement of any such Debt.

     "Purchasers"  has the meaning  ascribed to such term in the preamble hereto
and shall include its successors and assigns.

     "Qualified  Common  Stock" means with respect to any Holder,  any shares of
Common  Stock issued to such Holder in payment of the  Indebtedness  pursuant to
the  terms of this  Agreement  for  which the  effectiveness  of a  Registration
Statement or Registration Statements with respect to such shares of Common Stock
is not required to be maintained under the Registration Rights Agreement.

     "Quarterly  Reduction"  has the meaning  assigned to such term from time to
time in the Senior  Credit  Agreement  unless all of the  Obligations  under the
Senior Credit  Documents  have been paid in full and all  commitments  under the
Senior Credit  Agreement have been  terminated and no replacement  Senior Credit
Agreement is in effect in which event "Quarterly  Reductions" shall be an


                                       15


amount  determined  by the  Majority  Holders as of May 1 and November 1 of each
year based on the most recent  Engineering  Report delivered pursuant to Section
6.1(f) and Section 6.1(h), respectively unless such Engineering Reports have not
been requested by the Collateral Agent or the Majority  Holders,  in which event
the "Quarterly Reductions" shall be an amount determined by the Majority Holders
based  on  the  information  described  in the  Company's  most  recently  filed
Commission Reports.

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

     "Regulation U" means  Regulation U of the Board of Governors of the Federal
Reserve  System  as from  time to time in  effect  and any  successor  or  other
regulation or official interpretation of said Board of Governors relating to the
extension of credit by banks for the purpose of  purchasing  or carrying  margin
stocks applicable to member banks of the Federal Reserve System.

     "Registrable Securities" as defined in the Registration Rights Agreement.

     "Registration  Rights  Agreement"  means that certain  Registration  Rights
Agreement  between the Company and the Purchasers,  dated as of the date hereof,
substantially  in the form attached  hereto as Exhibit G, as amended,  modified,
supplemented or restated from time to time.

     "Release" means any release,  spill,  emission,  leak, injection,  deposit,
disposal, discharge, dispersal, leaching or migration of any Hazardous Materials
into  the  environment  or  into or out of any  real  property  of the  Company,
including  the  movement of  Hazardous  Materials  through or in the air,  soil,
surface  water,  groundwater  and/or land which could  reasonably be expected to
form the basis of an Environmental Liability against the Company.

     "Remedial Action" means any action to (i) clean up, remove, treat or in any
other way address  Hazardous  Materials  in the  environment,  (ii)  prevent the
Release  or threat of Release  or  minimize  the  further  Release of  Hazardous
Materials  so they do not  mitigate or  endanger or threaten to endanger  public
health or welfare or the environment or (iii) perform  pre-remedial  studies and
investigations and post-remedial monitoring and care.

     "Repurchase Closing Date" is defined in Section 3.5(b).

     "Repurchase Notice" is defined in Section 3.5(b).

     "Repurchase Notice Date" is defined in Section 3.5(b).

     "Restricted  Person"  means the  Guarantor,  the  Company,  and each  other
Subsidiary of the Company, excluding Unrestricted Subsidiaries.

     "Restricted  Securities" means the Notes and the Underlying  Shares, to the
extent  the Notes or  Underlying  Shares  have not then been sold to the  public
pursuant to (a) a registration under the Securities Act or (b) Rule 144(k).

     "Rule 144" and "Rule 144(k)" means Rule 144 and Rule 144(k),  respectively,
promulgated by the Commission  pursuant to the Securities Act, as such Rules may
be  amended


                                       16


from time to time,  or any similar rule or regulation  hereafter  adopted by the
Commission having substantially the same effect as such Rule.

     "Schedule" refers to a specific schedule to this Agreement,  unless another
document is specifically referenced.

     "Section"  means a  numbered  section  of this  Agreement,  unless  another
document is specifically referenced.

     "Securities  Act" means the Securities Act of 1933, as amended from time to
time, and any successor statute or law thereto.

     "Security  Agreement"  shall mean that  certain  Stock  Pledge and Security
Agreement  executed  by the  Company  in favor of the  Collateral  Agent for the
ratable benefit of the Holders,  of even date with the Agreement,  pledging 100%
of the outstanding  Capital Stock of the Guarantor,  as the same may be amended,
supplemented, and/or restated from time to time and in effect.

     "Security  Documents"  means the  Guaranty,  the  Mortgages,  the  Security
Agreement and all other security agreements,  deeds of trust, mortgages, chattel
mortgages, pledges, guaranties,  financing statements,  continuation statements,
extension  agreements and other  agreements or instruments now,  heretofore,  or
hereafter  delivered by any Restricted  Person to Collateral Agent in connection
with  this  Agreement  or any  transaction  contemplated  hereby  to  secure  or
guarantee the payment of any part of the  Indebtedness or the performance of any
Restricted Person's other duties and obligations under the Documents.

     "Senior Agent" means  Hibernia  National Bank, in its capacity as the agent
for the Banks  under the Senior  Credit  Agreement  or any  permitted  successor
thereto in such capacity.

     "Senior  Credit  Agreement"  means  (i) that  certain  Second  Amended  and
Restated Credit Agreement dated as of September 30, 2004 among the Company,  the
Guarantors,  the Senior Agent and Union Bank of  California,  N.A., as co-agent,
pursuant to which the Banks therein agree to make revolving  loans  available to
the Company in an aggregate outstanding amount not to exceed $100,000,000 at any
time, as amended, modified,  supplemented or restated as permitted hereunder and
(ii) subject to the limitations  set forth in Section  7.5(l),  any other credit
agreement, loan agreement,  note agreement,  promissory note, indenture or other
agreement or instrument evidencing or governing the terms of any indebtedness or
other  financial  accommodation  that  has been  incurred  to  extend,  replace,
refinance or refund in whole or in part the indebtedness  and other  obligations
outstanding under clause (i) or any other agreement or instrument referred to in
this clause (ii)  provided  such  agreement  or  instrument  referred to in this
clause (ii) expressly provides that it is intended to be and is a "Senior Credit
Agreement"  hereunder.  Any reference to the "Senior Credit Agreement" hereunder
shall be deemed a reference to any "Senior Credit Agreement" then extant.

     "Senior Credit Agreement Amendment" means an amendment to the Senior Credit
Agreement in the form attached hereto as Exhibit F.

                                       17


     "Senior Credit Documents" means, collectively, the Senior Credit Agreement,
and any other agreements,  documents,  instruments or certificates  executed and
delivered from time to time in connection therewith.

     "Significant  Default" means a Default arising under Section 6.7 (as of the
last day of the  Fiscal  Quarter  immediately  preceding  the date of the  Stock
Payment  Notice for which  Commission  Reports have been filed for the Company),
6.16, 7.1, 7.2, 7.3, 7.4 or 7.6.

     "Significant  Stock Payment  Notice" means any of the Maturity Date Payment
Notice,  a  Voluntary  Redemption  Notice or a Change  of  Control  Notice  that
contemplates payment of any of the Indebtedness with Common Stock.

     "Solvent"  shall mean, when used with respect to any Person on a particular
day,  that on such date (i) the fair  value of the  property  of such  Person is
greater  than the total amount of  Liabilities,  including  without  limitation,
contingent  Liabilities,  of such person, (ii) the present fair salable value of
the assets of such  person is not less than the amount  that will be required to
pay the probable  liability of such Person on its debts as they become  absolute
and  matured,  (iii) such Person is able to realize  upon its assets and pay its
debts and other  Liabilities,  contingent  obligations and other  commitments as
they mature in the ordinary course of business, (iv) such Person does not intend
to, and does not believe that it will,  incur debts and Liabilities  beyond such
Person's  ability  to pay as such  debts and  Liabilities  mature,  and (v) such
Person is not engaged in business or a  transaction,  and is not about to engage
in business or a transaction,  for which such Person's property would constitute
unreasonably  small capital  after giving due  consideration  to the  prevailing
practice  in the  industry in which such person is  engaged.  In  computing  the
amount  of  contingent  Liabilities  at  any  time,  it is  intended  that  such
Liabilities  will be computed at the amount which,  in light of all of the facts
and  circumstances  existing  at such time,  represents  the amount  that can be
reasonably expected to become an actual or matured liability.

     "Stated Rate" is defined in Section 3.3(c).

     "Stock  Payment  Notice" means any of the Maturity Date Payment  Notice,  a
Voluntary Redemption Notice or an Interest Payment Notice.

     "Subject  Business"  has the meaning  ascribed to such term in the recitals
hereto.

     "Subordinated  Note  Agreement"  means  that  certain  Securities  Purchase
Agreement  dated as of  December  15,  1999,  as amended by that  certain  First
Amendment  thereto  dated  as  of  June  7,  2004  among  the  Company  and  the
Subordinated  Noteholder,  as amended,  modified,  supplemented or restated from
time to time.

     "Subordinated   Note  Agreement   Amendment"  means  an  amendment  of  the
Subordinated Note Agreement in the form attached hereto as Exhibit E.

     "Subordinated  Note Documents" means,  collectively,  the Subordinated Note
Agreement,  and any other  agreements,  documents,  instruments or  certificates
executed and delivered from time to time in connection therewith.

                                       18


     "Subordinated  Noteholder"  means  Steelhead  Investments  Ltd.,  a  Cayman
Islands corporation, together with any successor or assignee thereof.

     "Subordinated  Notes" means that certain Amended and Restated Note dated as
of June 7, 2004,  in the  principal  amount of  $27,702,426.55,  executed by the
Company and payable to the order of the Subordinated  Noteholder pursuant to the
Subordinated Note Agreement,  as amended,  modified,  supplemented,  replaced or
restated from time to time.

     "Subordination  Agreement" means that certain Subordination Agreement dated
as of the date hereof,  by and among the Collateral  Agent, the Senior Agent and
the Company, as amended, modified, supplemented,  replaced or restated from time
to time.

     "Subsidiary"   means,   with  respect  to  any  Person,   any  corporation,
association,  partnership,  limited liability company,  joint venture,  or other
business or corporate  entity,  enterprise or organization  which is directly or
indirectly (through one or more intermediaries) controlled by or owned more than
fifty percent by such Person.

     "Tangible Net Worth" means, with respect to any Person, the total assets of
such  Person  (other  than  with  respect  to  the  Company,   its  Unrestricted
Subsidiaries), on a consolidated basis, exclusive of (a) those assets classified
as intangible,  including,  without limitation,  goodwill, patents,  trademarks,
trade names, copyrights, franchises and deferred charges, (b) treasury stock and
minority  interests  in any  Person,  (c) cash set apart and held in  sinking or
other  analogous  funds  established  for the  purpose  of  redemption  or other
retirement of Capital Stock,  (d) to the extent not already  deducted from total
assets, allowances for depreciation, depletion, obsolescence and/or amortization
of properties,  uncollectible  accounts, and contingent but probable Liabilities
as to which an amount can be established,  (e) deferred taxes and (f) all assets
arising from advances to officers,  former officers or sales  representatives of
such Person or any of its Subsidiaries  (other than with respect to the Company,
its  Unrestricted  Subsidiaries)  made outside the ordinary  course of business;
less total  Liabilities  of such  Person and its  Subsidiaries  (other than with
respect to the Company, its Unrestricted Subsidiaries), on a consolidated basis,
all of the above being  determined in accordance  with GAAP and, with respect to
the Company, excluding the effect of any cumulative after-tax amounts of ceiling
test write-downs (not to exceed an aggregate of $30 million) incurred subsequent
to December 31, 2001 pursuant to Rule 4.10 of Regulation S-X  promulgated by the
Commission.

     "Taxes" means any and all present or future taxes, duties, levies, imposts,
deductions, charges or withholdings, and any and all Liabilities with respect to
the foregoing.

     "Third Party Claim" has the meaning ascribed to such term in Section 16.6.

     "Total Recourse Debt" is defined in Section 6.7(a).

     "Trading  Day"  means  any day on which the  Common  Stock is traded on the
Principal  Market,  or, if the  Principal  Market is not the  principal  trading
market for the Common Stock, then on the principal  Eligible Market on which the
Common Stock is then traded;  provided  that "Trading Day" shall not include any
day on which the Common Stock is  scheduled to trade on


                                       19


any Eligible  Market for less than 4.5 hours or any day that the Common Stock is
suspended from trading during the final hour of trading on such Eligible  Market
(or if such  Eligible  Market does not  designate in advance the closing time of
trading on such Eligible  Market,  then during the hour ending at 4:00 p.m., New
York City Time).

     "Transfer" means any sale,  transfer,  assignment,  or other disposition of
any interest in, with or without  consideration,  any  security,  including  any
disposition of any security or of any interest  therein which would constitute a
sale thereof within the meaning of the Securities Act.

     "Tribunal"  means any government,  any arbitration  panel, any court or any
governmental department, commission, board, bureau, agency or instrumentality of
the  United  States of America or any  state,  province,  commonwealth,  nation,
territory,  possession, county, parish, town, township, village or municipality,
whether now or hereafter constituted or existing.

     "Underlying  Securities"  means the Common Stock issuable in payment of the
Indebtedness evidenced by the Notes pursuant to Section 3.3(b), 3.5 or 3.6.

     "Unrestricted Subsidiary" means (a) any Subsidiary of Company designated as
an  Unrestricted  Subsidiary  of  Company by  Company's  Board of  Directors  in
compliance  with  the  following   sentence,   and  (b)  any  Subsidiary  of  an
Unrestricted  Subsidiary.  The Board of Directors of Company may at any time and
from time to time designate any Subsidiary of Company (other than any Guarantor)
as an Unrestricted  Subsidiary  provided that (i) no Default or Event of Default
has occurred or is continuing at the time of such  designation  and after giving
effect  to  such  designation,  (ii)  immediately  after  such  designation,  no
Restricted  Person has any Liability to pay any Obligations of such  Subsidiary,
has in any way guaranteed any Obligations of such Subsidiary,  or has any assets
or  properties  (excluding a pledge of the equity  interest in such  Subsidiary)
which are subject to any Lien securing any Obligations of such  Subsidiary,  and
(iii) notice of any such  designation is promptly given to the Collateral  Agent
in writing.

     "Volume  Weighted Average Price" with respect to a share of Common Stock on
any day,  means on such day,  the average of the daily volume  weighted  average
trading  price per share (the total dollar  amount traded on each day divided by
the trading  volume for such day) of such security on the  Principal  Market for
the regular trading day session as reported at 4:15 p.m. (New York City time) by
Bloomberg, LP function key HP by using W to calculate the daily weighted average
or, if there is a change in trading hours, a change relating to Bloomberg or the
effect  or name  of such  function  key,  such  other  method  as is  reasonably
determined by the Board and the Majority Holders.

     "Voluntary Redemption Date" means the date on which the Company prepays all
or any portion of the outstanding Indebtedness evidenced by the Notes under this
Agreement.

     "Voluntary Redemption Notice" is defined in Section 3.6.

     "Voluntary  Redemption Price" means, with respect to the payment due on any
Voluntary  Redemption  Date,  that price  which  shall be computed as 90% of the
arithmetic  average of the Volume Weighted  Average Price of the Common Stock on
each of the thirty (30) consecutive


                                       20


Trading Days immediately preceding (but not including) such Voluntary Redemption
Date  (each,  a  "Voluntary   Redemption  Date  Measuring  Period").   All  such
determinations to be appropriately adjusted for any stock split, stock dividend,
stock combination or other similar transaction during such Voluntary  Prepayment
Measuring Period.

     The foregoing  definitions shall be equally applicable to both the singular
and plural forms of the defined  terms.  The use herein of the word "include" or
"including",  when following any general statement, term or matter, shall not be
construed  to limit  such  statement,  term or matter to the  specific  items or
matters  set  forth  immediately  following  such  word or to  similar  items or
matters,  whether or not nonlimiting  language (such as "without  limitation" or
"but not limited to" or words of similar import) is used with reference thereto,
but  rather  shall be deemed to refer to all other  items or  matters  that fall
within the broadest possible scope of such general statement, term or matter.

     As used herein, the terms "proved  reserves," "proved developed  reserves,"
and "proved  developed  producing  reserves,"  have the meaning given such terms
from  time to time and at the  time in  question  by the  Society  of  Petroleum
Engineers of the American Institute of Mining Engineers.

                                   ARTICLE II

                         PURCHASE AND SALE OF THE NOTES
                         ------------------------------


     2.1. Authorization and Issuance of the Notes.

          (a) The Company has  authorized the issuance of Notes in the aggregate
     principal amount of $18,000,000 on the Closing Date (the "Initial Notes").

          (b) On the Closing Date, the Company shall sell to each Purchaser, and
     each Purchaser shall severally purchase from the Company, upon satisfaction
     of the  conditions set forth in Section 4.1 hereof (or waiver in writing of
     such conditions by such Purchaser), an Initial Note in the principal amount
     equal to the amount set forth opposite such  Purchaser's name on Schedule 2
     for the purchase price set forth opposite its name.

          (c)  On  or  before  the  issuance  thereof,  the  Company  will  have
     authorized  the  issue  and  sale to the  Purchasers  of up to  $10,000,000
     aggregate principal amount of additional Notes (the "Additional Notes").

          (d) On each  Additional  Closing Date,  the Company shall sell to each
     Purchaser,  and each Purchaser shall  severally  purchase from the Company,
     upon  satisfaction  of the  conditions  set forth in Section 4.3 hereof (or
     waiver in writing of such  conditions  by such  Purchaser),  in one or more
     increments  of  $4,000,000  or integral  multiples of  $1,000,000 in excess
     thereof, up to $10,000,000  aggregate stated principal amount of Additional
     Notes in the respective  percentages  set forth  opposite such


                                       21


     Purchaser's  name on Schedule 2 for the purchase  price set forth  opposite
     its name.  Notwithstanding  anything to the contrary herein, the obligation
     of each  Purchaser  to purchase  Additional  Notes shall  terminate  on the
     second  anniversary of the Closing Date and the aggregate  stated principal
     amount of all  Additional  Notes  issued by the  Company  shall not  exceed
     $10,000,000.

     2.2. Delivery of the Notes.

     On the Closing Date,  the Company  shall  deliver to each  Purchaser a duly
executed Initial Note (payable to the order of such Purchaser) purchased by such
Purchaser on the Closing  Date.  Delivery  shall be made against  receipt by the
Company of the aggregate  purchase  price for the Notes being  purchased by such
Purchaser  by  wire  transfer  of  immediately  available  funds  to an  account
designated by the Company.  On each  Additional  Closing Date, the Company shall
deliver to each Purchaser a duly executed  Additional Note (payable to the order
of such Purchaser)  purchased by such Purchaser on such Additional Closing Date.
Delivery shall be made against receipt by the Company of the aggregate  purchase
price  for the  Additional  Notes  being  purchased  by such  Purchaser  by wire
transfer of immediately available funds to an account designated by the Company.

     2.3. Closing.

     Subject  to the  satisfaction  of the  conditions  precedent  set  forth in
Section  4.1  hereof  (or  the  waiver  in  writing  of such  conditions  by the
Purchasers),  the delivery of the Initial  Notes shall take place at the offices
of Gardere Wynne Sewell LLP, 3000 Thanksgiving  Tower, 1601 Elm Street,  Dallas,
Texas  75201-4761  on the  Closing  Date.  Subject  to the  satisfaction  of the
conditions  precedent  set forth in Section 4.3 hereof (or the waiver in writing
of such  conditions by the  Purchasers),  the delivery of the  Additional  Notes
shall take place at the offices of Gardere Wynne Sewell LLP,  3000  Thanksgiving
Tower, 1601 Elm Street, Dallas, Texas 75201-4761 on each Additional Closing Date
or at  such  other  location  as may be  agreed  upon  by the  Company  and  the
Purchasers.

                                  ARTICLE III

                             PROVISIONS OF THE NOTES
                             -----------------------

     3.1. The Notes.

     The Initial  Notes shall be in the  aggregate  stated  principal  amount of
Eighteen  Million  Dollars  ($18,000,000).  The Initial Notes shall be dated the
Closing Date. The Additional  Notes shall be in the aggregate  stated  principal
amount of not more than Ten Million Dollars ($10,000,000).  The Additional Notes
shall be dated the applicable  Additional  Closing Date on which such Additional
Notes are  issued.  The  aggregate  amount of the Notes  shall,  subject  to the
provisions  for mandatory and optional  prepayment  and  acceleration  contained
herein, mature and be payable in full on the Maturity Date.

     3.2. General Provisions as to Payments.

                                       22


          (a) The Company  shall make each  payment in respect of the  principal
     of, premium,  if any, or accrued interest on the Notes, or any other amount
     due to the Holders under this  Agreement or any other  Document,  not later
     than  noon,  New York City  time,  on the day when due,  to the  Holders as
     provided  in the Notes and  Schedule  2 attached  hereto,  or in such other
     manner as instructed from time to time in writing by the Holder.  Except as
     otherwise  permitted in Section 3.3(b), 3.5 and 3.6, all payments hereunder
     shall be made in United  States  Dollars by wire  transfer  of  immediately
     available funds.

          (b) Whenever any payment (including  principal of, premium, if any, or
     interest  on the  Notes or other  amount)  hereunder  or  under  any  other
     Document shall become due, or otherwise would occur, on a day that is not a
     Business Day, such payment  shall be made on the next  succeeding  Business
     Day,  and such  extension  of time  shall in such case be  included  in the
     computation of such interest, or other amount, if applicable.

          (c) The Company  hereby  authorizes  the  Holders to make  appropriate
     notations  on  the  grid  attached  to  the  Notes,   including  the  date,
     outstanding  principal  amount and any prepayment  thereof and the deferred
     interest  amounts  to be  added to the  principal  amount  of the  Notes in
     accordance with Section 3.3(b),  which notations shall be conclusive absent
     manifest error; provided,  however, that the failure of the Holders to make
     such notation or any error on the Notes shall not affect the  obligation of
     the Company to repay,  in  accordance  with the terms of the Notes and this
     Agreement,  the principal  amount of the Notes  together with all interest,
     prepayment premiums, if any, and other amounts due hereunder.

          (d) Neither the Company nor any of its  Subsidiaries  shall  purchase,
     redeem or otherwise  acquire any Notes from any holder  thereof except upon
     payment or redemption thereof in accordance with the specific terms thereof
     and of this  Agreement  unless the  Company or such  Subsidiary  shall have
     offered to purchase, redeem or otherwise acquire, as the case may be, Notes
     from each holder of the Notes at the time  outstanding  upon the same terms
     and conditions and on a pro rata basis (based upon the principal  amount of
     the Notes then held by each such holder). Any Notes so purchased,  redeemed
     or otherwise acquired by the Company or any Subsidiary of the Company shall
     be  cancelled  and not be deemed  outstanding  for any  purpose  under this
     Agreement.

          (e) Except to the extent otherwise  provided  herein,  each payment of
     principal of the Notes by the Company  shall be made for the account of the
     holders thereof pro rata in accordance with the respective unpaid principal
     amounts of the Notes held by them and each  payment  of  interest  on Notes
     shall be made for the account of the holders thereof pro rata in accordance
     with the  amounts of  interest  on such  Notes then due and  payable to the
     respective Holders.

          (f) The Company  shall not effect any payment of the  Indebtedness  by
     the issuance of Common Stock otherwise permitted under this Agreement,  and
     no Holder


                                       23


     shall  have the  obligation  to accept any such  payment  in Common  Stock,
     pursuant to Sections  3.3(b),  3.5 or 3.6 or otherwise,  to the extent that
     after  giving  effect to such  issuance,  such Holder  (together  with such
     Holder's  Affiliates)  would  beneficially  own in  excess  of  9.99%  (the
     "Maximum  Percentage") of the number of shares of Common Stock  outstanding
     immediately  after  giving  effect to such  payment.  For  purposes  of the
     foregoing sentence, the number of shares of Common Stock beneficially owned
     by any  Holder and its  Affiliates  shall  include  the number of shares of
     Common  Stock  issuable  upon payment of the  Indebtedness  with respect to
     which the  determination  of such sentence is being made, but shall exclude
     the number of shares of Common  Stock which would be issuable in payment of
     any other  Indebtedness  permitted  under the terms of this  Agreement  for
     which no notice of payment by issuance of Common  Stock has been  received.
     For  purposes  of  this  Section  3.2(f),  in  determining  the  number  of
     outstanding  shares of Common Stock,  each Holder may rely on the number of
     outstanding  shares of Common Stock as reflected in (x) the Company's  most
     recent Form 10-Q or Form 10-K, as the case may be, (y) a more recent public
     announcement  by the Company or (z) any other  notice by the Company or the
     Company's transfer agent setting forth the number of shares of Common Stock
     outstanding.  In any case, the number of outstanding shares of Common Stock
     shall be determined  after giving effect to the payment of any Indebtedness
     by the  issuance of Common  Stock since the date as of which such number of
     outstanding  shares of Common Stock was reported (but  excluding any shares
     of Common  Stock  issuable  pursuant  to such Stock  Payment  Notice to the
     extent provided in this Section 3.2(f)). In connection with the delivery of
     any Stock Payment Notice,  the Company may request in such notice,  and, if
     so  requested,  each Holder shall confirm on or before two (2) Trading Days
     after the  receipt of such Stock  Payment  Notice,  the number of shares of
     Common Stock such Holder may receive without causing such Holder,  together
     with its Affiliates,  to have beneficial ownership of a number of shares of
     Common Stock which exceeds the Maximum  Percentage  (the "Maximum  Shares")
     and the number of outstanding shares of Common Stock used by such Holder to
     calculate the Maximum Shares. Each Holder covenants that its calculation of
     the  Maximum  Shares  shall be made in good faith and  consistent  with the
     calculation of "beneficial ownership" under Rules 13(d) of the Exchange Act
     as if the  Common  Stock to be  issued  pursuant  to the  applicable  Stock
     Payment Notice had been issued to such Holder at the Floor Price  specified
     in such Stock  Payment  Notice  unless no Floor Price is  specified in such
     Stock Payment  Notice in which event such Common Stock shall be excluded in
     all respects from the calculation and  determination of the Maximum Shares.
     Without limiting the generality of the foregoing,  unless a Holder notifies
     the Company of the Maximum  Shares that such Holder may receive  within two
     (2) Trading Days of receipt of any Payment  Notice,  the Company may assume
     that the  number of shares of Common  Stock to be issued to such  Holder on
     the payment date to which such Payment  Notice  relates will not cause such
     Holder,  together with its Affiliates,  to have  beneficial  ownership of a
     number of shares of Common Stock which exceeds the Maximum  Percentage  and
     the Company will have no liability to any Holder in respect of issuances of
     Common  Stock in excess of the Maximum  Percentage.  Without  limiting  the
     generality  of the  foregoing,  the  Company


                                       24


     shall have no  obligation  to  determine  the  beneficial  ownership of any
     Holder  and  its  Affiliates  or to  determine  whether  any  Person  is an
     Affiliate of another Person.

          (g) From and after the delivery of any Stock Payment  Notice until the
     issuance of the shares of Common Stock to which such Stock  Payment  Notice
     relates, the Company shall reserve and keep available, free from preemptive
     rights, out of the aggregate of its authorized but unissued Common Stock or
     its authorized and issued Common Stock held in its treasury,  the number of
     shares of Common Stock  necessary to enable it to satisfy any obligation to
     issue  Common  Stock on the Issue Date to which such Stock  Payment  Notice
     relates. All shares of Common Stock issued to each Holder in payment of any
     of the  Indebtedness  as permitted  under this  Agreement  shall,  upon the
     issuance   thereof,   be  validly   authorized  and  issued,   fully  paid,
     nonassessable,  free of preemptive  rights and free, from all taxes,  Liens
     and charges with respect to the issuance thereof.

          (h) With respect to any shares of Common Stock issued pursuant to this
     Agreement,  the  Company  shall (x)  provided  that the  transfer  agent is
     participating  in the Depository  Trust Company Fast  Automated  Securities
     Transfer  Program and such action is not  prohibited by  applicable  law or
     regulation or any applicable policy of the Depository Trust Company, credit
     such  aggregate  number of shares of Common Stock to which the Holder shall
     be entitled to the  Holder's or its  designee's  balance  account  with the
     Depository  Trust Company through its Deposit  Withdrawal  Agent Commission
     System on the date such shares are  required to be issued  pursuant to this
     Agreement  and  the  shares  of  Common  Stock  so  issued  shall  bear  no
     restrictive  legend,  or (y) if the  foregoing  shall not apply,  issue and
     deliver  to each  Holder,  a  certificate,  registered  in the name of such
     Holder or its  designee,  for the number of shares of Common Stock to which
     such Holder  shall be entitled on the date such shares of Common  Stock are
     required to be issued pursuant to this Agreement.

          (i) With respect to any shares of Common Stock issued pursuant to this
     Agreement,  such shares will be duly authorized and validly issued, will be
     fully paid and nonassessable and will not have been issued in violation of,
     and will not be subject to, any preemptive or similar rights.

     3.3. Interest.

          (a) Interest Rate. The Indebtedness  evidenced by the Notes shall bear
     interest  at ten  percent  (10%)  per  annum on the  outstanding  principal
     balance thereof,  for each day from and including the date that the Note is
     issued (which  outstanding  principal  balance shall be determined based on
     the stated  amount of the Note  issued on the  Closing  Date and not on the
     purchase  price of the Note on the Closing Date plus any interest  added to
     such principal balance thereof in accordance with Section 3.3(b)). Interest
     on all  Indebtedness  evidenced by the Notes shall be calculated for actual
     days  elapsed on the basis of a 360 day year  consisting  of twelve  30-day
     months  . If any  payment  of  principal  of or  interest  on  Indebtedness
     evidenced by a Note shall become due on a day which is not a Business  Day,
     such payment shall be made on the next


                                       25


     succeeding  Business  Day and,  in the case of a  principal  payment,  such
     extension  of time shall be included in  computing  interest in  connection
     with such payment.

          (b)  Interest  Payment  Dates and  Payment.  Interest  accrued  on the
     Indebtedness  evidenced by the Notes shall be payable on each Payment Date,
     commencing  on March 5, 2005 with  respect to the Initial  Notes and on the
     later of March 5, 2005 or the first such  Payment  Date to occur  after the
     issuance thereof with respect to any Additional Notes, on any date on which
     any  Indebtedness  evidenced  by  the  Notes  is  prepaid  whether  due  to
     acceleration or otherwise,  and on the Maturity Date.  Interest  payable on
     any date on which  any  Indebtedness  evidenced  by the  Notes is  prepaid,
     whether due to acceleration or otherwise shall be payable, at the Company's
     option,  in  cash,  or  by  the  issuance  of  additional  fully  paid  and
     nonassessable  shares of Common Stock or any combination of cash and Common
     Stock to the extent  permitted  by  Section  3.6.  Interest  payable on the
     Maturity Date shall be payable, at the Company's option, in cash, or by the
     issuance of additional fully paid and nonassessable  shares of Common Stock
     or any  combination  of cash and Common  Stock to the extent  permitted  by
     Section 3.5(a).  Interest payable on any Payment Date shall be payable,  at
     Company's option,  (i) in cash, or (ii) by the issuance of additional fully
     paid and nonassessable  shares of Common Stock (but not fractions  thereof)
     or (iii) any  combination  of the  foregoing  clauses (i) and (ii).  In the
     event the Company  elects to pay the  interest  due on any Payment  Date by
     issuing  Common Stock or by a  combination  of cash and Common  Stock,  (A)
     subject to the  following  proviso,  the  Interest  Payment  Price for such
     payment is equal to or greater than the Floor Price,  if any,  specified by
     the Company in the notice required by the following clause (D) with respect
     to such Payment Date,  as adjusted for stock  splits,  reverse stock splits
     and similar  recapitalizations,  if any  occurring  on or after the date of
     such notice, (B) the Equity Conditions are met as of the date of the notice
     required by the following  clause (D) and as of such Payment Date,  (C) the
     number of shares of Common  Stock to be issued to each Holder in payment of
     the interest due on such Payment Date to such Holder shall be determined by
     dividing  the portion of such  interest  to be paid in Common  Stock by the
     Interest  Payment  Price for such Payment  Date,  and (D) the Company shall
     give written notice to the Holders at least fifteen (15) Trading Days prior
     to such Payment  Date stating the  percentage  of the  aggregate  amount of
     interest  due on such  Payment  Date the Company  proposes to pay in Common
     Stock on such Payment Date and, at the  Company's  option,  the Floor Price
     for such Common Stock (each, an "Interest Payment  Notice");  provided that
     in the event the foregoing clause (A) is not satisfied on any Payment Date,
     any Holder may elect,  by written  notice of such  election  to the Company
     delivered on or before one (1) Trading Day prior to such Payment  Date,  to
     accept  payment of all or any  portion of the  interest  due such Holder on
     such  Payment  Date that the  Company  proposed  to pay by the  issuance of
     Common  Stock in which event the portion of each  payment  specified by the
     Holder  shall be made to such  Holder  in Common  Stock as if the  Interest
     Payment Price was equal to the Floor Price specified by the Company and the
     remainder  of such  interest  due  such  Holders  shall  be  paid in  cash.
     Notwithstanding the foregoing,  on each Payment Date occurring on or before
     June 5, 2007, the Company may defer fifty percent (50%) of the interest


                                       26


     due on such Payment Date and such deferred  interest shall become a part of
     the principal  due  hereunder as of the Payment Date such  interest  became
     due, shall earn interest as provided hereunder and shall be due and payable
     on the Maturity  Date unless the maturity of the amounts due  hereunder are
     accelerated pursuant to the terms of this Agreement.

          (c) Limitation of Interest.  The Company, the Collateral Agent and the
     Holders  intend to strictly  comply  with all  applicable  laws,  including
     applicable usury laws.  Accordingly,  the provisions of this Section 3.3(c)
     shall  govern and control over every other  provision of this  Agreement or
     any other Document  which  conflicts or is  inconsistent  with this Section
     3.3(c),  even if such provision declares that it controls.  As used in this
     Section 3.3(c), the term "interest"  includes the aggregate of all charges,
     fees,  benefits  or other  compensation  which  constitute  interest  under
     applicable  law,   provided  that,  to  the  maximum  extent  permitted  by
     applicable law, (a) any non-principal  payment shall be characterized as an
     expense or as compensation for something other than the use, forbearance or
     detention  of money and not as  interest,  and (b) all interest at any time
     contracted for, reserved, charged or received shall be amortized, prorated,
     allocated  and  spread,  in  equal  parts  during  the  full  term  of  the
     Indebtedness.  In no  event  shall  the  Company  or any  other  Person  be
     obligated  to pay,  or any Holder have any right or  privilege  to reserve,
     receive or retain,  (a) any  interest  in excess of the  maximum  amount of
     nonusurious  interest permitted under the laws of the State of Texas or the
     applicable  laws (if any) of the United  States or of any other  applicable
     state,  or (b) total  interest  in excess of the amount  which such  Holder
     could lawfully have contracted for, reserved, received, retained or charged
     had the interest been  calculated for the full term of the  Indebtedness at
     the Highest  Lawful Rate.  On each day, if any, that the interest rate (the
     "Stated  Rate")  called  for under  this  Agreement  or any other  Document
     exceeds the Highest  Lawful Rate,  the rate at which  interest shall accrue
     shall  automatically  be fixed by operation of this sentence at the Highest
     Lawful Rate for that day, and shall remain fixed at the Highest Lawful Rate
     for each day thereafter  until the total amount of interest  accrued equals
     the total amount of interest which would have accrued if there were no such
     ceiling rate as is imposed by this  sentence.  Thereafter,  interest  shall
     accrue at the Stated Rate  unless and until the Stated  Rate again  exceeds
     the Highest  Lawful Rate when the provisions of the  immediately  preceding
     sentence shall again  automatically  operate to limit the interest  accrual
     rate. The daily  interest  rates to be used in calculating  interest at the
     Highest Lawful Rate shall be determined by dividing the applicable  Highest
     Lawful Rate per annum by the number of days in the calendar  year for which
     such calculation is being made. None of the terms and provisions  contained
     in this  Agreement or in any other  Document  which  directly or indirectly
     relate to  interest  shall  ever be  construed  without  reference  to this
     Section  3.3(c),  or be  construed to create a contract to pay for the use,
     forbearance  or  detention  of money at an  interest  rate in excess of the
     Highest Lawful Rate. If the term of any Indebtedness is shortened by reason
     of  acceleration  of  maturity  as a result of any  Default or by any other
     cause,  or by reason of any  required or permitted  prepayment,  and if for
     that (or any  other)  reason  any  Holder  at any time,  including  but not
     limited to, the stated maturity,  is owed or received (and/or has


                                       27


     received)  interest in excess of interest  calculated at the Highest Lawful
     Rate,  then and in any such event all of any such excess  interest shall be
     canceled  automatically as of the date of such acceleration,  prepayment or
     other event which  produces  the excess,  and, if such excess  interest has
     been  paid  to  such  Holder,  it  shall  be  credited  pro  tanto  against
     then-outstanding  principal  balance of the Company's  obligations  to such
     Holder,  effective  as of the date or dates  when the  event  occurs  which
     causes it to be excess  interest,  until such excess is exhausted or all of
     such principal has been fully paid and satisfied,  whichever  occurs first,
     and any remaining  balance of such excess shall be promptly refunded to its
     payor.  Chapter  346 of the Texas  Finance  Code (which  regulates  certain
     revolving  credit  accounts  (formerly Tex. Rev. Civ. Stat. Ann. Art. 5069,
     Ch. 15)) shall not apply to this  Agreement or to any Note,  nor shall this
     Agreement  or any Note be  governed by or be subject to the  provisions  of
     such Chapter 346 in any manner whatsoever.

     3.4.  Interest on Overdue  Amounts.  During the  continuance of an Event of
Default,  the Majority  Holders may, at their  option,  by notice to the Company
(which   notice  may  be  revoked  at  the  option  of  the   Majority   Holders
notwithstanding any provision of Section 16.8 requiring unanimous consent of the
Holders to changes in interest rates),  declare that the Indebtedness  evidenced
by each Note shall bear  interest  at a rate per annum  equal to twelve  percent
(12%) per annum,  provided that,  during the  continuance of an Event of Default
under  Sections  8.1(f),  the interest rates set forth in this Section 3.4 above
shall be applicable to Indebtedness  evidenced by the Notes without any election
or action on the part of the Collateral Agent or any Holder.

     3.5. Mandatory Redemption.

          (a) Maturity Date. Any outstanding Indebtedness evidenced by the Notes
     and all other unpaid  Indebtedness  shall be paid in full, at the Company's
     option,  (i) in cash,  (ii) by the  issuance of  additional  fully paid and
     nonassessable  shares of Common Stock (but not fractions  thereof) or (iii)
     any combination of the foregoing clauses (i) and (ii) on the Maturity Date.
     In the event the Company elects to pay the Indebtedness due on the Maturity
     Date by issuing  Common Stock or by a combination of cash and Common Stock,
     (A) subject to the following  proviso,  the Maturity Date Price is equal to
     or greater  than the Floor Price,  if any,  specified by the Company in the
     notice required by the following  clause (D), as adjusted for stock splits,
     reverse stock splits and similar recapitalizations,  if any occurring on or
     after the date of such notice,  (B) the Equity Conditions are met as of the
     date of the  notice  required  by the  following  clause  (D) and as of the
     Maturity  Date,  (C) the  number of shares of Common  Stock to be issued to
     each Holder in payment of the outstanding  principal balance of and accrued
     but  unpaid  interest  on the  Indebtedness  held by such  Holder  shall be
     determined  by  dividing  the  portion of such  Indebtedness  to be paid in
     Common Stock by the Maturity Date Price, (D) the Company shall give written
     notice to the Collateral  Agent and the Holders at least  thirty-five  (35)
     Trading  Days prior to the  Maturity  Date  stating the  percentage  of the
     outstanding  principal  balance of and accrued  but unpaid  interest on the
     Notes the Company will pay in Common Stock on the  Maturity  Date,  and, at
     the Company's option,  the Floor Price for such Common Stock (the "Maturity
     Date  Payment  Notice")  and  (E)  Common  Stock  can  only  be  issued  in
     satisfaction of the outstanding principal


                                       28


     balance of and accrued but unpaid  interest on the Notes;  provided that in
     the event the foregoing clause (A) is not satisfied,  any Holder may elect,
     by written  notice of such  election to the Company  delivered on or before
     one (1) Trading Day prior to the Maturity Date, to accept payment of all or
     any portion of such Holder's  Indebtedness  that Company proposed to pay by
     the issuance of Common Stock (the "Maturity  Date Floor Price  Portion") in
     which event the portion of such  payment  specified by such Holder shall be
     made to such Holder in Common Stock as if the Maturity Date Price was equal
     to the Floor  Price  specified  by the Company  and the  remainder  of such
     Indebtedness due such Holder shall be paid in cash on the Maturity Date. If
     the Company  delivers a Maturity  Date  Payment  Notice with respect to the
     payment  of the  amounts  due on the  Maturity  Date  and  the  Company  is
     prohibited  from paying the amounts  specified in the Maturity Date Payment
     Notice in Common Stock on the  Maturity  Date as a result of the failure to
     satisfy any of the  conditions to such payment in Common Stock set forth in
     this  Agreement or any other  Document  (including  any Maturity Date Floor
     Price  Portion),  the  Company  shall pay the amounts it proposed to pay in
     Common  Stock in the  Maturity  Date  Payment  Notice in full in cash on or
     before  thirty (30) days after the Maturity  Date.  The Company  shall also
     comply with any applicable obligation under Section 6.14.

          (b)  Change of  Control.  In the event of a Change  of  Control,  each
     Holder shall have the option to require the Company to  repurchase  all the
     Notes held by such Holder at a purchase price equal to the then outstanding
     principal  amount of the Notes,  together with all interest accrued on such
     Notes  through the date of  repurchase.  The Company shall give the Holders
     notice (a "Change of Control  Notice") of any transaction that would result
     in a  Change  of  Control  not  less  than  sixty  (60)  days  prior to the
     anticipated  date of the  consummation of such transaction (but in no event
     prior to the public announcement of such Change of Control). Any Holder may
     exercise its right to require the Company to  repurchase  the Notes held by
     it by delivering written notice of such exercise (a "Repurchase Notice") to
     the Company  within twenty (20) days after receipt of the Change of Control
     Notice. The repurchase of the Notes shall be consummated on a date selected
     by the Company upon at least  thirty-five  (35) Trading Days' prior written
     notice to the Holders which have given the relevant Repurchase Notice(s) if
     any portion of such repurchase will be made by the issuance of Common Stock
     to the extent permitted  hereunder,  otherwise at least ten (10) days prior
     written  notice to such  holders,  but in no event  later  than the date of
     consummation of such Change of Control or three (3) Business Days after the
     Company becomes aware of such Change of Control unless the Company is not a
     party to the  transaction  resulting in a Change of Control,  in which case
     such date shall be as soon as practicable, following such Change of Control
     but in any event  not later  than ten (10)  days  following  the  Change of
     Control (the "Repurchase  Closing Date").  On the Repurchase  Closing Date,
     the  Company  shall  purchase  from  the  Holders  which  have  given  such
     Repurchase Notice(s),  and such Holder shall sell to the Company, the Notes
     held by such Holder for the  purchase  price  specified  in this  paragraph
     3.5(b) which purchase price may, at the Company's  option,  be paid in cash
     or by the  issuance  of shares of Common  Stock as if such  purchase  was a
     voluntary  redemption of the Notes  pursuant to Section 3.6. Any


                                       29


     payment of the purchase  price with shares of Common Stock as a result of a
     Change of Control may be made only if the issuance of such shares of Common
     Stock complies, in all respects,  with the conditions and provisions of the
     Documents  applicable  to a  voluntary  redemption  pursuant to Section 3.6
     including Section 6.14.

          The  Company  shall  comply,  to  the  extent  applicable,   with  the
     requirements of Section 14(e) of the Exchange Act and any other  securities
     laws or regulations in connection  with the repurchase of Notes pursuant to
     this Section  3.5(b).  To the extent that the  provisions of any securities
     laws or regulations  conflict with the  provisions of this Section  3.5(b),
     the  Company  shall  comply  with  the  applicable   securities   laws  and
     regulations and shall not be deemed to have breached its obligations  under
     this Section 3.5(b) by virtue thereof.

     3.6. Optional Redemption.  The Company may from time to time redeem, at the
Company's option, (i) in cash, (ii) by the issuance of additional fully paid and
nonassessable  shares of Common Stock (but not  fractions  thereof) or (iii) any
combination  of the  foregoing  clauses  (i) and (ii) all or any  portion of the
Indebtedness  outstanding  under the Notes.  In the event the Company  elects to
voluntarily  redeem  any of the  Indebtedness  outstanding  under  the  Notes by
issuing Common Stock or by a combination  of cash and Common Stock,  (A) subject
to the following  proviso,  the Voluntary  Redemption  Price for such  Voluntary
Redemption Date is equal to or greater than the Floor Price,  if any,  specified
by the Company in the notice  required by the following  clause (D) with respect
to such Voluntary  Redemption Date, as adjusted for stock splits,  reverse stock
splits and similar  recapitalizations,  if any occurring on or after the date of
such  notice,  (B) the  Equity  Conditions  are met as of the date of the notice
required by the following  clause (D) and as of the Voluntary  Redemption  Date,
(C) the number of shares of Common  Stock to be issued to each Holder in payment
of the outstanding  principal  balance of and accrued but unpaid interest on the
Indebtedness  held by such Holder shall be determined by dividing the portion of
such  Indebtedness  due on such Voluntary  Redemption  Date to be paid in Common
Stock by the Voluntary  Redemption Price for such Voluntary Redemption Date, (D)
the Company shall give written notice to the Holders at least  thirty-five  (35)
Trading  Days  prior to the  proposed  Voluntary  Redemption  Date  stating  the
aggregate amount of principal the Company proposes to prepay on such date (which
shall be in a minimum  aggregate  principal  amount of $500,000 or any  integral
multiple of $100,000  in excess  thereof),  the  percentage  of the  outstanding
principal  balance of and accrued  but unpaid  interest on the Notes the Company
will pay in Common Stock on such Voluntary Redemption Date and, at the Company's
option,  the Floor Price for such Common  Stock  (each a  "Voluntary  Redemption
Notice")  and (E)  Common  Stock  can  only be  issued  in  satisfaction  of the
outstanding  principal  balance of and accrued but unpaid interest on the Notes;
provided  that in the event the  foregoing  clause (A) is not  satisfied  on any
Voluntary  Redemption  Date,  any Holder may  elect,  by written  notice of such
election to the Company delivered on or before one (1) Trading Day prior to such
Voluntary  Redemption  Date,  to accept  payment  of all or any  portion of such
Holder's Indebtedness that the Company proposed to pay by the issuance of Common
Stock in which event the portion of such payment  specified by such Holder shall
be made to such Holder in Common Stock as if the Voluntary  Redemption Price was
equal to the Floor Price  specified by the Company  (the "Floor Price  Portion")
and the remainder of such  Indebtedness  due on such Voluntary  Redemption  Date
shall


                                       30


be paid in cash on the  Voluntary  Redemption  Date.  Upon the  delivery  of the
notice  required  by the  foregoing  clause  (D)  the  principal  amount  of the
Indebtedness  evidenced  by the Notes  specified in such notice shall become due
and payable and shall constitute an Event of Default under Section 8.1(a) if the
Company  fails to pay such  principal  amount on the Voluntary  Redemption  Date
specified  in such notice  unless such failure to pay is a result of the failure
to satisfy  clause (A) on such  Voluntary  Redemption  Date with  respect to any
portion of such  payment  that is not the Floor  Price  Portion.  If the Company
delivers a  Voluntary  Redemption  Notice  with  respect  to the  payment of the
amounts due on any  Voluntary  Redemption  Date and the Company  cannot make the
payment of the amounts specified in such Voluntary  Redemption Notice to be paid
in Common Stock on the Voluntary  Redemption  Date as a result of the failure to
satisfy any of the  conditions to such payment in Common Stock set forth in this
Agreement or any other Document (including any Floor Price Portion), the Company
shall pay the  amounts  it  proposed  to pay in Common  Stock on such  Voluntary
Redemption  Notice  in cash on or  before  ten (10) days  after  such  Voluntary
Redemption  Date. The Company shall also comply with any  applicable  obligation
under Section 6.14.

     3.7. Securities Register.

          (a) The  Company  shall  cause  to be kept at its  principal  office a
     register  for  the  registration  and  transfer  of the  Notes  (the  "Note
     Register").  The names and  addresses  of the  holders  of the  Notes,  the
     transfer of the Notes,  and the names and addresses of the  transferees  of
     the Notes shall be registered in the Note Register.

          (b) The Person in whose name any  registered  Note shall be registered
     shall be  deemed  and  treated  as the  owner and  holder  thereof  for all
     purposes of this  Agreement  and the  Company  shall not be affected by any
     notice to the contrary, until due presentment of such Note for registration
     of transfer so provided in this Section 3.7(b). Payment of or on account of
     the  principal,  premium,  interest  and  any  other  amount  paid  on  any
     registered  Note shall be made to (or based upon the written order of) such
     registered holder.

     3.8. Lost, Etc. Securities.

          (a) Upon receipt of evidence  reasonably  satisfactory  to the Company
     (an affidavit of a financial  institution or other  institutional  investor
     being  satisfactory) of the ownership and the loss,  theft,  destruction or
     mutilation  of any  Note,  and in the  case  of any  such  loss,  theft  or
     destruction,  upon receipt of an indemnity  reasonably  satisfactory to the
     Company (if such Holder is a financial  institution or other  institutional
     investor, its own agreement being satisfactory) or, in the case of any such
     mutilation,  upon  surrender  for  cancellation  of such Note,  the Company
     shall, without charge,  issue,  register and deliver in lieu of such Note a
     new Note of like kind representing the same rights represented by and dated
     the date of such lost,  stolen,  destroyed or mutilated  Note. Any such new
     Note shall  constitute an original  contractual  obligation of the Company,
     whether or not the  allegedly  lost,  stolen,  mutilated or destroyed  Note
     shall be at any time enforceable by any Person.

                                       31


     3.9. Several Obligations; Remedies Independent. No Purchaser shall have any
obligation to any other Purchaser in respect of the failure by such Purchaser to
purchase  any Note  required  to be  purchased  by such  Purchaser.  The amounts
payable  by the  Company  at any time  hereunder  and  under  the  Notes to each
Purchaser shall be separate and independent  debt and, subject to the provisions
of Articles  VIII and XIV,  each holder shall be entitled to protect and enforce
its rights  arising out of this  Agreement and the Notes held by it and it shall
not be  necessary  for  any  other  holder  to  consent  to or be  joined  as an
additional party in, any proceedings for such purposes.

     3.10. Notes Not Senior  Indebtedness.  The Indebtedness does not constitute
"Senior  Indebtedness"  as  such  term  is  defined  in  the  Subordinated  Note
Agreement.

                                   ARTICLE IV

                              CONDITIONS PRECEDENT
                              --------------------

     4.1.  Purchase of Initial Notes.  The  Purchasers  shall not be required to
purchase the Initial Notes  hereunder  unless the Company has satisfied  each of
the following conditions:

          (a)  Closing  Deliveries.  The  Company  shall have  furnished  to the
     Purchasers:

               (i) Copies of the  Organizational  Documents  of each  Restricted
          Person,  together  with  all  amendments,  and a  certificate  of good
          standing,  each certified by the appropriate  governmental  officer in
          its  jurisdiction of  incorporation  as well as any other  information
          required by Section 326 of the USA  PATRIOT ACT or  necessary  for the
          Purchasers  to  verify  the  identity  of each  Restricted  Person  as
          required by Section 326 of the USA PATRIOT ACT.

               (ii)  Copies,  certified  by the  Secretary  or other  Authorized
          Officer of each Restricted  Person,  of its  Organizational  Documents
          and,  if  applicable,  its  Board  of  Directors'  resolutions  and of
          resolutions or actions of any other body  authorizing the execution of
          the Documents to which such Restricted Person is a party.

               (iii) An  incumbency  certificate,  executed by the  Secretary or
          other  Authorized  Officer  of each  Restricted  Person,  which  shall
          identify by name and title and bear the  signatures of the  Authorized
          Officers and any other officers of each Restricted  Person  authorized
          to sign the Documents to which such Restricted Person is a party, upon
          which  certificate  the  Purchasers  shall be  entitled  to rely until
          informed of any change in writing by such Restricted Person.

               (iv) A certificate,  signed by the Chief Financial Officer of the
          Company, stating that on the date of the Purchase of the Initial Notes
          no Default or Event of Default has  occurred  and is  continuing,  and
          after giving effect to the Closing Transactions,  the Company shall be
          in compliance,  on a pro forma basis,


                                       32


          with the financial  covenants set forth in Section 6.7  accompanied by
          reasonably  detailed  calculations  demonstrating  compliance with the
          such financial covenants.

               (v) A written opinion of the Company's counsel,  addressed to the
          Purchasers in substantially the form of Exhibit D.

               (vi) The  Subordination  Agreement duly executed and delivered by
          the Company, the Collateral Agent and the Senior Agent.

               (vii) The Initial Notes.

               (viii) The  following  Security  Documents  to be executed on the
          Closing Date, duly executed and delivered by each Restricted  Party or
          party thereto:

                    (a) the Mortgages;

                    (b) the Security  Agreement  (and  physical  delivery to the
               Collateral Agent (or the Senior Agent) of the stock  certificates
               therein described);

                    (c) the Guaranty; and

                    (d) any additional  Security Documents granted by any Person
               in favor of the Collateral  Agent for the ratable  benefit of the
               Purchasers as security for the Indebtedness.

               (ix) A copy of each  Document and all other  material  documents,
          instruments and agreements executed and/or delivered by any Restricted
          Person in connection  with the Closing  Transactions,  together with a
          certificate from an Authorized  Officer of the Company certifying that
          such copies are  accurate  and  complete  and  represent  the complete
          understanding and agreement of the parties with respect to the subject
          matter thereof.

               (x) The Subordinated  Note Agreement  Amendment duly executed and
          delivered  by the Company  and the holders of the Senior  Subordinated
          Notes.

               (xi) The Senior  Credit  Agreement  Amendment  duly  executed and
          delivered by Company, Guarantor, Senior Agent and Banks.

               (xii) The  Registration  Rights Agreement and each other Document
          duly executed and delivered by each Restricted Person a party thereto,
          Collateral Agent and the Purchasers, to the extent a party thereto.

               (xiii) Such other  documents as any  Purchaser or its counsel may
          have reasonably requested.

                                       33


          (b)  Closing  Transactions.  Subject  only  to  the  disbursement  and
     application of the proceeds of the Notes,  the Closing  Transactions  shall
     have occurred and been  consummated on the terms set forth in the Documents
     (or the  Collateral  Agent shall be satisfied that such  transactions  will
     occur and be consummated simultaneously with the Closing Date).

          (c) No Event of Default or Default; Legal Matters. No Event of Default
     or Default  shall have  occurred and be continuing or would result from the
     consummation of the Closing  Transactions and all legal matters incident to
     the purchase of the Initial Notes shall be  satisfactory  to the Purchasers
     and their counsel.

          (d) No Litigation.  No litigation,  arbitration or similar  proceeding
     shall be pending  or, to the  knowledge  of the  Company,  threatened  that
     purports to affect the validity or  enforceability  of this Agreement,  the
     other Documents, the Closing Transactions or the transactions  contemplated
     hereby or  thereby or that could  cause a  Material  Adverse  Effect in the
     Company  or in  the  ability  of  any  Restricted  Person  to  perform  its
     obligations under any of the Documents to which it is a party.

          (e)  Closing  Fees and  Expenses.  Subject to any  agreed  limitations
     between  the  Company and the  Purchaser,  the Company  shall have paid all
     fees,  expenses and  disbursements  of counsel for the Collateral Agent and
     the  Purchasers  with  respect to the initial  closing of the  transactions
     contemplated by this Agreement.

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

          (g) Other Matters.  All matters related to this  Agreement,  the other
     Documents,  the Restricted  Persons,  the Closing Documents and the Closing
     Transactions  shall be reasonably  acceptable to each  Purchaser,  and each
     Restricted Person shall have delivered to each Purchaser and each Purchaser
     such evidence as they shall request to substantiate  any matters related to
     this Agreement,  the other Documents, the Restricted Persons, the Documents
     and the Closing Transactions as any Purchaser shall reasonably request.

     4.2.  Certificate of Effectiveness.  Upon satisfaction or waiver in writing
by the  Collateral  Agent and each Purchaser of each of the conditions set forth
in  Section  4.1,  the  Company  and the  Collateral  Agent  shall  execute  the
Certificate of  Effectiveness.  Each Purchaser hereby  authorizes the Collateral
Agent to execute the Certificate of Effectiveness on its behalf and acknowledges
and  agrees  that the  execution  of the  Certificate  of  Effectiveness  by the
Collateral Agent shall be binding on each such Purchaser.

     4.3.  Purchase of Additional Notes. The Purchasers shall not be required to
purchase any Additional Notes hereunder unless the Company has satisfied each of
the following conditions:

                                       34


          (a)  Closing  Deliveries.  The  Company  shall have  furnished  to the
     Purchasers:

               (i) Copies of the  Organizational  Documents  of each  Restricted
          Person,  together  with  all  amendments,  and a  certificate  of good
          standing,  each certified by the appropriate  governmental  officer in
          its  jurisdiction of  incorporation  as well as any other  information
          required by Section 326 of the USA  PATRIOT ACT or  necessary  for the
          Purchasers  to  verify  the  identity  of each  Restricted  Person  as
          required by Section 326 of the USA PATRIOT ACT.

               (ii)  Copies,  certified  by the  Secretary  or other  Authorized
          Officer of each Restricted  Person,  of its  Organizational  Documents
          and,  if  applicable,  its  Board  of  Directors'  resolutions  and of
          resolutions or actions of any other body  authorizing the execution of
          the Documents to which such Restricted Person is a party.

               (iii) An  incumbency  certificate,  executed by the  Secretary or
          other  Authorized  Officer  of each  Restricted  Person,  which  shall
          identify by name and title and bear the  signatures of the  Authorized
          Officers and any other officers of each Restricted  Person  authorized
          to sign the Documents to which such Restricted Person is a party, upon
          which  certificate  the  Purchasers  shall be  entitled  to rely until
          informed of any change in writing by such Restricted Person.

               (iv) A certificate,  signed by the Chief Financial Officer of the
          Company,  stating that on the date of the  Purchase of the  Additional
          Notes no Default or Event of Default has occurred  and is  continuing,
          and after giving effect to the Closing Transactions, the Company shall
          be in compliance,  on a pro forma basis, with the financial  covenants
          set  forth  in  Section  6.7   accompanied   by  reasonably   detailed
          calculations   demonstrating   compliance   with  the  such  financial
          covenants.

               (v) A written opinion of the Company's counsel,  addressed to the
          Purchasers in substantially the form of Exhibit D.

               (vi) The Additional Notes to be issued at such Additional Closing
          Date.

               (vii) Such other  documents  as any  Purchaser or its counsel may
          have reasonably requested.

          (b) Prior  Notice.  Each  Purchaser  shall have received not less than
     twenty (20) days prior  written  notice  from the Company of the  Company's
     desire  to issue  and sell to the  Purchasers,  subject  to the  terms  and
     conditions set forth herein,  Additional  Notes.  Such prior written notice
     shall include the proposed Additional Closing Date and the aggregate stated
     amount of Additional Notes to be issued on such proposed Additional Closing
     Date.

          (c) No Event of Default or Default; Legal Matters. No Event of Default
     or Default  shall have  occurred and be continuing or would result from the
     consummation


                                       35


     of the  purchase of the  Additional  Notes to be issued on such  Additional
     Closing  Date  and all  legal  matters  incident  to the  purchase  of such
     Additional  Notes shall be reasonably  satisfactory  to the  Purchasers and
     their counsel.

          (d) No Litigation.  No litigation,  arbitration or similar  proceeding
     shall be pending  or, to the  knowledge  of the  Company,  threatened  that
     purports to affect the validity or  enforceability  of this Agreement,  the
     other Documents, or the transactions contemplated hereby or thereby or that
     could cause a Material  Adverse  Effect in the Company or in the ability of
     any Restricted Person to perform its obligations under any of the Documents
     to which it is a party.

          (e)  Closing  Fees and  Expenses.  The  Company  shall  have  paid all
     documented and reasonable fees, out-of-pocket expenses and disbursements of
     counsel for the  Purchasers  with respect to the closing of the purchase of
     the Additional Notes.

          (f) Representations and Warranties. The representations and warranties
     of the  Company  and each  Guarantor  under  this  Agreement  and the other
     Documents  shall be true and  correct in all  material  respects as of such
     date, as if then made.

                                   ARTICLE V

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY
                  ---------------------------------------------

     To confirm each Purchaser's understanding concerning Restricted Persons and
Restricted  Persons'  businesses,  properties and obligations and to induce each
Purchaser to enter into this Agreement and to purchase its Notes hereunder,  the
Company represents and warrants to Collateral Agent and each Purchaser that:

     5.1. Corporate Authority of the Company.  The Company is a corporation duly
created,  validly existing, and in good standing under the laws of the state its
incorporation, and is duly qualified and in good standing as foreign corporation
in Louisiana and all other jurisdictions where the failure to qualify would have
an  adverse  effect  upon its  ability  to perform  its  obligations  under this
Agreement  and all  Documents  to  which  it is a  party.  The  Company  has the
corporate power to enter into this Agreement,  execute the Documents,  and grant
the liens and  security  interests in the  Collateral  in the manner and for the
purpose  contemplated by the Security  Documents.  The Company has the corporate
power to  perform  its  obligations  hereunder  and  under  the  Documents.  The
execution,  delivery,  and  performance by the Company of the Documents have all
been duly authorized by all necessary  corporate or company  action,  and do not
and will not result in any violation by the Company of any provision of any law,
rule,  regulation,   order,  writ,  judgment,  decree,  determination  or  award
presently in effect  having  applicability  to the  Company,  or the articles of
incorporation  and bylaws of the Company.  Except as set forth in the Disclosure
Schedule  attached  hereto,  the making and  performance  by the  Company of the
Documents  do not and will not  result  in a breach of or  constitute  a default
under any material  indenture or loan or credit  agreement or any other material
agreement  or  instrument  to which the Company is a party or by which it may be
bound or affected,  or result in, or require,  the creation or imposition of any
mortgage,  deed of trust,  pledge,  lien,  security  interest


                                       36


or other charge or encumbrance of any nature (other than as  contemplated by the
Security  Documents)  upon or with respect to any of the properties now owned or
hereafter acquired by the Company. Each of the Documents to which the Company is
a party  constitutes  a legal,  valid and  binding  obligation  of the  Company,
enforceable in accordance with its terms.

     5.2. Financial Reports. As of the date hereof, the most recent filings made
with the  Commission  pursuant  to the  Exchange  Act do not  contain any untrue
statements of a material fact or omit to state a material fact necessary to make
the statements made, in light of the  circumstances  under which such statements
were made, not misleading  with respect to the periods  covered by such reports.
Except as set forth in the Disclosure  Schedule,  no Material Adverse Effect has
occurred  since the dates of such  filings  with  respect to the Company and its
Subsidiaries, taken as a whole.

     5.3. Title to Mortgaged  Properties.  As of the date hereof,  except as set
forth on the Disclosure  Schedule  attached  hereto,  the Company has Defensible
Title to each of the  Mortgaged  Properties  that has a book  cost in  excess of
$200,000  and, in each case free and clear of all Liens  (other  than  Permitted
Liens)  (i) Liens for taxes not yet due and  payable  or, if  payable,  that are
being contested in good faith in the ordinary course of business, (ii) statutory
Liens (including materialmen's,  mechanic's,  repairmen's,  landlord's and other
similar  encumbrances)  arising in the  ordinary  course of  business  to secure
payments  not yet due and payable or, if payable,  that are being  contested  in
good faith in the ordinary course of business,  (iii)  easements,  restrictions,
reservations  or  other   encumbrances,   as  well  as  such   imperfections  or
irregularities of title, if any, as are not material, (iv) obligations or duties
to any  municipality or public  authority with respect to any franchise,  grant,
license or permit and all applicable laws, rules,  regulations and orders of any
Governmental Authority,  (v) all lessors' royalties,  overriding royalties,  net
profits  interests,   production  payments,   carried  interests,   reversionary
interests and other burdens on or  deductions  from the proceeds of  production,
(vi) the terms and  conditions of joint  operating  agreements and other oil and
gas contracts,  (vii) all rights to consent by, required notices to, and filings
with or other actions by governmental or tribal entities,  if any, in connection
with the change of ownership or control of an interest in federal, state, tribal
or other domestic  governmental oil and gas leases,  if the same are customarily
obtained subsequent to such change of ownership or control,  but only insofar as
such consents,  notices,  filings and other actions  relate to the  transactions
contemplated by this Agreement,  (viii) any preferential  purchase rights,  (ix)
required  third  party  consents  to  assignment,  (x)  conventional  rights  of
reassignment  prior to abandonment  and (xi) the terms and provisions of oil and
gas leases, unit agreements,  pooling  agreements,  and other documents creating
interests comprising the Mortgaged Properties; provided, however, the exceptions
described in clauses (iv) through (xi) inclusive  above are qualified to include
only those  exceptions  in each case which do not  operate to (A) reduce the net
revenue interest of the Company below that set forth on the Disclosure Schedule,
(B)  increase  the  proportionate  share  of costs  and  expenses  of  leasehold
operations attributable to or to be borne by the working interest of the Company
above that set forth on the Disclosure Schedule without a proportionate increase
in the net revenue  interest of the Company or (C) increase the working interest
of the  Company  above  that set  forth on the  Disclosure  Schedule  without  a
proportionate  increase  in  the  net  revenue  interest  of the  Company,  and,
provided,   further,  that  the  foregoing  defects,   limitations,   liens  and
encumbrances,  whether  individually  material or not,  do not in the  aggregate
create a Material  Adverse Effect upon the Company (the categories of exceptions
in clauses (iv) through


                                       37


(xi),  as so qualified and as any such  exceptions  may exist from time to time,
being  referred  to  as  the  "Designated  Title  Exceptions").   The  Mortgages
constitute a legal,  valid and perfected Lien on the property  interests covered
thereby,  subject only to Designated  Title  Exceptions,  Permitted  Liens,  and
matters disclosed on the Disclosure  Schedule.  Further,  as of the date hereof,
the Mortgaged  Properties  constitute  not less than ninety percent (90%) of the
net present value of the proved reserves of the Oil and Gas Properties  owned by
the Company and the  Guarantors,  taken as a whole, as of the Closing Date which
are included in the Borrowing Base as of the Closing Date.

     5.4.  Litigation.  Other than as set forth in the Disclosure Schedule as of
the date hereof, there are no legal actions, suits or proceedings pending or, to
the best knowledge of the Company,  threatened against or affecting the Company,
or any of its properties  before any court or  administrative  agency  (federal,
state or local),  which could  reasonably  be expected to  constitute a Material
Adverse Effect, and there are no judgments or decrees affecting the Company,  or
its property (including,  without limitation, the Collateral) which are or could
reasonably  be expected to become a Lien  against  such  property  (other than a
Designated Title Exception or a Permitted Lien).

     5.5. Approvals. No authorization, consent, approval or formal exemption of,
nor any  filing  or  registration  with,  any  governmental  body or  regulatory
authority  (federal,  state or local),  and no vote,  consent or approval of the
shareholders  of the  Company  is or will be  required  in  connection  with the
execution and delivery by the Company of the Documents or the performance by the
Company of its obligations  hereunder and under the other  Documents,  except to
the extent obtained.

     5.6. Required  Insurance.  The Company  maintains  insurance with insurance
companies in such amounts and against such risks as is usually carried by owners
of similar  businesses and properties in the same general areas in which Company
operates.

     5.7.  Licenses.  The Company possesses  adequate  franchises,  licenses and
permits  to own  its  properties  and to  carry  on its  business  as  presently
conducted, except where the failure to do so could not reasonably be expected to
have a Material Adverse Effect.

     5.8. Adverse  Agreements.  Except as described in the Disclosure  Schedule,
the Company is not a party to any  agreement or  instrument,  nor subject to any
charter or other restriction,  materially and adversely  affecting the business,
properties,  assets, or operations of the Company or its condition (financial or
otherwise), and the Company is not in default in the performance,  observance or
fulfillment of any of the obligations,  covenants or conditions contained in any
agreement or instrument to which it is a party, which default would constitute a
Material Adverse Effect.

     5.9. Default or Event of Default.  No Default or Event of Default hereunder
has occurred and is  continuing  or will occur as a result of the giving  effect
hereto.

     5.10.  Employee  Benefit Plans.  Each employee benefit plan as to which the
Company  may have any  liability  complies  in all  material  respects  with all
applicable requirements of law


                                       38


and regulations,  and (i) no Reportable Event (as defined in ERISA) has occurred
and is  continuing  with  respect to any such  plan,  (ii) the  Company  has not
withdrawn  from any such plan or  initiated  steps to do so,  and (iii) no steps
have been taken to terminate any such plan.

     5.11. Investment Company Act. The Company is not an "investment company" or
a company  "controlled"  by an "investment  company,"  within the meaning of the
Investment Company Act of 1940, as amended.

     5.12.  Public  Utility  Holding  Company Act. The Company is not a "holding
company," or a "subsidiary  company" of a "holding  company," within the meaning
of the Public Utility Holding Company Act of 1935, as amended.

     5.13. Regulations X, T and U. The Company is not engaged principally, or as
one of its  important  activities,  in the business of extending  credit for the
purpose  of  purchasing  or  carrying   margin  stock  (within  the  meaning  of
Regulations X, T and U of the Board of Governors of the Federal Reserve System),
and none of the  proceeds  of the  issuance  of the  Notes  will be used for the
purpose of purchasing or carrying such margin stock.

     5.14.  Location of Offices and Records.  As of the date  hereof,  the chief
place of business of the Company,  and the office where the Company keeps all of
its records  concerning  the  Collateral,  is 14701 St. Mary's Lane,  Suite 800,
Houston, Texas 77079.

     5.15. Patriot Act. To the extent  applicable,  each Restricted Person is in
compliance,  in all material respects,  with the (i) Trading with the Enemy Act,
as amended,  and each of the foreign  assets  control  regulations of the Untied
States Treasury  Department (31 CFR,  Subtitle B, Chapter V, as amended) and any
other enabling legislation or executive order relating thereto, and (ii) Uniting
and Strengthening  America by Providing  Appropriate Tools Required to Intercept
and Obstruct  Terrorism  (USA  Patriot Act of 2001) (the "Act").  No part of the
proceeds of the issuance of the Notes will be used, directly or indirectly,  for
any payments to any governmental official or employee, political party, official
of a political party,  candidate for political  office, or anyone else acting in
an official  capacity,  in order to obtain,  retain or direct business or obtain
any  improper  advantage,  in  violation of the United  States  Foreign  Corrupt
Practices Act of 1977, as amended.

     5.16. Environmental Matters. Except as previously disclosed to the Agent in
writing or as could not  reasonably be expected to result in a Material  Adverse
Effect:

          (a) To the best of Company's  knowledge  and belief after due inquiry,
     Company is in compliance with all applicable Environmental Laws;

          (b) To the best of Company's  knowledge  and belief after due inquiry,
     Company has obtained all consents and permits required under all applicable
     Environmental  Laws to operate its  business as  presently  conducted or as
     proposed  to be  conducted  and all such  consents  and permits are in full
     force and effect and Company is in compliance with all terms and conditions
     of such approvals;

                                       39


          (c) To the best of Company's  knowledge  and belief after due inquiry,
     neither Company nor any of the present property or operations of Company is
     subject to any order from or agreement with any  Governmental  Authority or
     private party respecting (i) failure to comply with any  Environmental  Law
     or any Remedial Action or (ii) any Environmental  Liabilities  arising from
     the Release or threatened  Release except those orders and agreements  with
     which Company has complied;

          (d) To the best of Company's  knowledge  and belief after due inquiry,
     none  of  the   operations  of  Company  is  subject  to  any  judicial  or
     administrative  proceeding alleging a violation of, or liability under, any
     Environmental Law;

          (e) None of the operations of Company, to its best knowledge after due
     inquiry, is the subject of any investigation by any Governmental  Authority
     evaluating whether any Remedial Action is needed to respond to a Release or
     threatened Release;

          (f)  Company  has not been  required  to file  any  notice  under  any
     Environmental Law indicating past or present treatment, storage or disposal
     of a  hazardous  waste as  defined by 40 CFR Part 261 or any state or local
     equivalent  which could  reasonably be expected to have a Material  Adverse
     Effect;

          (g)  Company  has not been  required  to file  any  notice  under  any
     applicable  Environmental Law reporting a Release which could reasonably be
     expected to have a Material Adverse Effect;

          (h) There is not now, nor, to the best knowledge of Company, has there
     ever been, on or in any property of Company:

               (i) any unauthorized generation, treatment, recycling, storage or
          disposal of any  hazardous  waste as defined by 40 CFR Part 261 or any
          state or local equivalent,

               (ii)  any  underground  storage  tanks  or  surface  impoundments
          without proper permits,

               (iii) any asbestos - containing material, or

               (iv) any polychlorinated biphenyls (PCBs) used in hydraulic oils,
          electrical transformers or other equipment;

          (i) There have been no written  commitments  or  agreements  involving
     Company  from or with any  Governmental  Authority  or any  private  entity
     (including,  without limitation,  the owner of the Mortgaged  Properties or
     any  portion  thereof)  relating  to the  generation,  storage,  treatment,
     presence, Release, or threatened Release which could reasonably be expected
     to have a  Material  Adverse  Effect  on or into any of the  properties  of
     Company  or the  environment  (including  off-site  disposal  of  Hazardous
     Materials) or any Remedial Action with respect thereto in non-compliance or
     violation of any Environmental Law;

                                       40


          (j) Company has not received any written notice or claim to the effect
     that it is or may be liable to any  Person  as a result of the  Release  or
     threatened  Release  which could  reasonably be expected to have a Material
     Adverse Effect;

          (k) To the best of Company's  knowledge  and belief after due inquiry,
     Company has no known liability in connection  with any material  Release or
     material  threatened  Release which could  reasonably be expected to have a
     Material Adverse Effect;

          (l)  After  due  inquiry,  no  Environmental  Lien has  attached  (and
     continues to attach) to any properties of Company,  provided that no breach
     of this Section 5.16(l) shall occur if the same is discharged within thirty
     days  after  the  attachment  thereof  or an  appeal  or other  appropriate
     proceeding for review thereof is taken within said thirty day period and/or
     a stay of execution pending such appeal is obtained; and

          (m) To the Company's best knowledge after due inquiry, there have been
     no environmental  investigations,  studies, audits, tests, reviews or other
     analyses conducted by or which are in the possession of Company in relation
     to any violation of Environmental  Laws which violation could reasonably be
     expected to have a Material Adverse Effect in relation to any properties or
     facility now or  previously  owned or leased by Company which have not been
     made available to the Holders.

     5.17. Solvency of the Company. The Company is and after consummation of the
transactions  contemplated by this Agreement (including the purchase and sale of
the Notes),  and after giving effect to all obligations  incurred by the Company
in connection herewith, will be, Solvent.

     5.18. Governmental  Requirements.  The Collateral is in compliance with all
current  Governmental  Requirements  affecting the said  property,  except where
failure could not reasonably be expected to have a Material Adverse Effect.

     5.19. Corporate Authority of the Guarantor.  The Guarantor is a corporation
duly created, validly existing, and in good standing under the laws of the state
of its  incorporation,  and is duly  qualified  and in good  standing as foreign
corporation in all other  jurisdictions  where the failure to qualify would have
an  adverse  effect  upon its  ability  to perform  its  obligations  under this
Agreement  and all  Documents  to  which it is a party.  The  Guarantor  has the
corporate power to enter into this Agreement and the Guaranty. The Guarantor has
the power to perform its obligations  hereunder and under the Documents to which
it is a party.  The making and  performance by the Guarantor of the Documents to
which it is a party have all been duly authorized by all necessary  corporate or
company action,  and do not and will not violate any provision of any law, rule,
regulation,  order, writ, judgment, decree,  determination or award presently in
effect having applicability to the Guarantor, or the Organizational Documents of
the Guarantor.  The making and  performance by the Guarantor of the Documents to
which it is a party do not and will not  result in a breach of or  constitute  a
default  under any material  indenture or loan or credit  agreement or any other
material  agreement or  instrument to which the Guarantor is a party or by which
it may be bound  or  affected,  or  result  in,  or  require,  the  creation  or

                                       41


imposition of any mortgage,  deed of trust,  pledge,  lien, security interest or
other charge or  encumbrance  of any nature (other than as  contemplated  by the
Security  Documents)  upon or with respect to any of the properties now owned or
hereafter  acquired by the Guarantor,  and the Guarantor is not in default under
or in violation of any such order, writ, judgment, decree, determination, award,
indenture,  agreement or  instrument to the extent any such default or violation
could  reasonably  be expected to have a Material  Adverse  Effect.  Each of the
Documents  to which the  Guarantor  is a party  constitutes  a legal,  valid and
binding obligation of the Guarantor, enforceable in accordance with its terms.

     5.20. Subordinated Note Agreement. The Company represents and warrants that
it is not in default under the  Subordinated  Note  Agreement,  and that,  after
giving effect to the Subordinated Note Agreement Amendment, no such default will
occur as a result of Company's  execution of this Agreement,  and its incurrence
of obligations hereunder.

     5.21.  Security  Agreement.  As of the date hereof,  the Security Agreement
constitutes a second priority security interest in one hundred percent (100%) of
the issued and  outstanding  Capital  Stock of the  Guarantor,  and there are no
other  Liens  affecting  the said  Capital  Stock  except for a Lien  granted by
Company  as  security  for  the  Obligations  evidenced  by  the  Senior  Credit
Documents.

     5.22.  Closing  Date  Borrowing  Base and  Quarterly  Reduction.  As of the
Closing Date, the Borrowing Base is $28,000,000  and the Quarterly  Reduction is
$3,000,000.

     5.23. Survival of Representations  and Warranties.  The Company understands
and agrees that the Collateral  Agent and the Holders are relying upon the above
representations  and  warranties in purchasing  the Notes from the Company.  The
Company further agrees that the foregoing  representations  and warranties shall
be true and correct in all  material  respects as of the date(s)  made or deemed
made  and  shall  remain  in  full  force  and  effect  until  such  time as the
Indebtedness shall be paid in full, or until this Agreement shall be terminated,
whichever is the last to occur.

                                   ARTICLE VI

                              AFFIRMATIVE COVENANTS
                              ---------------------

     To conform with the terms and  conditions  under which the  Purchasers  are
willing to purchase the Notes from the Company,  and to induce each Purchaser to
enter into this  Agreement  and to  purchase  its Notes  hereunder,  the Company
warrants,  covenants  and agrees  that  until the full and final  payment of the
Indebtedness and the termination of this Agreement, unless Majority Holders have
previously agreed otherwise:

     6.1. Financial Statements;  Other Reporting  Requirements.  If requested by
the Majority  Holders (and only if and only for so long as such  statements  and
reports are requested by the Majority Holders) the Company will furnish or cause
to be furnished to the  Collateral  Agent (and or its attorneys or any Holder as
specified  by the  Majority  Holders  (but in any event not more than  three (3)
Holders)):

                                       42


          (a) within one hundred twenty (120) days following the close of fiscal
     year of the  Company,  audited  consolidated  financial  statements  of the
     Company consisting of a balance sheet as at the end of such fiscal year and
     statements  of income,  and  statements  of cash flow for such fiscal year,
     setting forth in each case in comparative  form the  corresponding  figures
     for the preceding  fiscal year,  certified by independent  certified public
     accountants of recognized standing acceptable to the Majority Holders (such
     acceptance not to be unreasonably withheld),

          (b) within  forty-five  (45) days following the close of each calendar
     quarter,   interim  consolidated   financial  statements  of  the  Company,
     consisting of a balance sheet as of the end of such quarter and  statements
     of income and cash flow,  certified  as true and  correct by the  Company's
     chief  financial  officer as having been prepared in  accordance  with GAAP
     consistently applied,

          (c) upon each submission of the financial  statements  required by (a)
     and (b)  above,  a  compliance  certificate  signed by the chief  financial
     officer of the Company in the form attached hereto as Exhibit B, certifying
     that he has reviewed  this  Agreement  and to the best of his  knowledge no
     Default or Event of Default has  occurred,  or if such  Default or Event of
     Default has occurred,  specifying the nature and extent  thereof,  that all
     financial  covenants  in this  Agreement  have been met,  and  providing  a
     computation of all financial covenants contained herein, and details of any
     waivers,  amendments,  or modifications  of any covenant  contained in this
     Agreement,  and said  certificate  shall  include a schedule of all Hedging
     Agreements,

          (d)  within  thirty-five  (35) days after the end of each  month,  the
     unaudited  consolidated  balance sheets of the Company and its Subsidiaries
     as at the end of such  month and the  related  consolidated  statements  of
     income and  stockholders'  equity and cash flows for such month and in each
     case for the period from the  beginning of the then current  fiscal year to
     the end of such month,  setting forth in each case in comparative  form the
     corresponding  figures for the corresponding periods of the previous fiscal
     year, all in reasonable detail and certified by the chief financial officer
     of the  Company  that they  fairly  present in all  material  respects  the
     financial  condition  of the Company and its  Subsidiaries  as at the dates
     indicated and the results of their  operations and their cash flows for the
     periods  indicated,  subject  to  changes  resulting  from audit and normal
     year-end adjustments,

          (e) as soon as  available  and in any event  within  thirty  (30) days
     after filing, a copy of the Company's federal tax returns,

          (f) by March 31st of each year, a third party  engineering  report (at
     Company's  expense) dated as of the preceding  December 31 covering Oil and
     Gas  Properties  included or to be included in the Borrowing  Base, in form
     and substance reasonably  satisfactory to the Collateral Agent, prepared by
     independent petroleum engineers chosen by Company and reasonably acceptable
     to the Collateral Agent,

                                       43


          (g) as soon as available and in any event within  forty-five (45) days
     after the end of each quarter,  the following reports and data:  reports of
     production  (attributable  to Oil  and  Gas  Properties  included  or to be
     included  in  the  Borrowing  Base  under  the  Senior  Credit  Agreement),
     commodity  prices,  sales  revenues,  operating  expenses  for  the  Leases
     evaluated for determination of the Borrowing Base, and production taxes, in
     form and content reasonably acceptable to the Majority Holders,

          (h) as soon as available  and in any event by  September  30th of each
     year,  an  internally  prepared  engineering  report  covering  Oil and Gas
     Properties included or to be included in the Borrowing Base and dated as of
     no  earlier  than the  preceding  June 30, in form and  content  reasonably
     satisfactory to the Majority Holders,

          (i) as soon as delivered,  copies of any  engineering  report covering
     the Oil and Gas Properties of any Restricted Person delivered to the Senior
     Agent or the Banks  pursuant to the Senior Credit  Agreement,  and upon any
     Holder's  request  and  within  10  days  of such  request,  copies  of any
     financial  or other  report or notice  delivered to the Senior Agent or the
     Banks  pursuant to the Senior Credit  Agreement not otherwise  delivered to
     the Holders pursuant to this Section 6.1, and

          (j) subject to Section 6.13, such other financial information or other
     information  concerning  the  Company as the  Collateral  Agent  and/or the
     Holders may reasonably request from time to time.

     6.2. Notice of Default; Litigation; ERISA Matters. At any time during which
the  Collateral  Agent  requested  that the Company  deliver such  notices,  the
Company will give written notice to the  Collateral  Agent as soon as reasonably
possible and in no event more than five (5) Business Days of (i) the  occurrence
of any Default or Event of Default hereunder of which it has knowledge, (ii) the
filing of any actions,  suits or proceedings against the Company in any court or
before any governmental  authority or tribunal of which it has knowledge,  which
could  reasonably be expected to cause a Material Adverse Effect with respect to
the  Company,  (iii)  the  occurrence  of  a  reportable  event  under,  or  the
institution of steps by the Company to withdraw from, or the  institution of any
steps to terminate,  any employee  benefit plan as to which the Company may have
liability, or (iv) the occurrence of any other action, event or condition of any
nature of which it has knowledge which could reasonably be expected to cause, or
lead to, or result in, any Material Adverse Effect to the Company.

     6.3.  Maintenance of Existence,  Properties and Liens. The Company will (i)
continue  to engage  in the  Subject  Business  and  other  business  activities
reasonably related to thereto;  (ii) maintain its existence and good standing in
each  jurisdiction  in which it is  required  to be  qualified;  (iii)  keep and
maintain all franchises, licenses and properties necessary in the conduct of its
business in good order and condition,  except to the extent the failure to do so
could not reasonably be expected to cause a Material  Adverse Effect;  (iv) duly
observe and conform to all material requirements of any Governmental Authorities
relative to the conduct of its business or the  operation of its  properties  or
assets,  except to the  extent  the  failure  to do so could not  reasonably  be
expected to cause a Material  Adverse Effect;  and (v) the Company will maintain
in


                                       44


favor of the Collateral Agent for the ratable benefit of the Holders a perfected
Lien and security  interest in the  Collateral,  subject only to Permitted Liens
and Designated Title Exceptions.

     6.4. Taxes.  The Company shall pay or cause to be paid when due, all taxes,
local and  special  assessments,  and  governmental  charges  of every  type and
description,  that may from time to time be imposed, assessed and levied against
its properties.  The Company further agrees to furnish the Holders with evidence
that such taxes,  assessments,  and  governmental  and other  charges due by the
Company have been paid in full and in a timely manner, if such data is requested
by the Holders. Notwithstanding the foregoing, the Company may withhold any such
payment  or elect  to  contest  any Lien  (other  than  the  Lien  securing  the
Indebtedness)  if  the  Company  is in  good  faith  conducting  an  appropriate
proceeding  to  contest  the  obligation  to pay and so  long as the  Collateral
Agent's interest in the Collateral is not jeopardized.

     6.5.  Compliance with Environmental Laws. The Company shall comply with and
shall use reasonable  commercial efforts to cause all of its employees,  agents,
invitees or sublessees  (while such Persons are acting within the scope of their
relationship  with the Company) to (i) comply with all  Environmental  Laws with
respect to the disposal of Hazardous  Materials,  (ii) pay immediately  when due
the  cost of  removal  of any  such  Hazardous  Materials,  and  (iii)  keep the
Company's  properties  free of any lien  imposed  pursuant to any  Environmental
Laws, provided that no breach of this Section 6.5 shall occur if (a) the same is
discharged   within   thirty   (30)  days  after  the  Company  is  notified  of
non-compliance  or an appeal or  appropriate  proceedings  for review thereof is
taken  within such period and Company is not  obligated  to comply  pending such
appeal  or other  appropriate  proceedings  or (b)  failure  to do so could  not
reasonably be expected to have a Material Adverse Effect.

The Company  shall give  notice to the  Collateral  Agent as soon as  reasonably
possible  and in no  event  more  than  five  (5) days  after  it  receives  any
compliance  orders,   environmental   citations,   or  other  notices  from  any
Governmental Authority relating to any Environmental Liabilities relating to its
properties or elsewhere  which may reasonably be expected to result in a Default
of Event of Default;  the Company agrees to take any and all  reasonable  steps,
and to perform  any and all  reasonable  actions  necessary  or  appropriate  to
promptly comply with any such citations, compliance orders or Environmental Laws
requiring the Company to remove,  treat or dispose of such Hazardous  Materials,
and, upon the Collateral  Agent's request,  to provide the Collateral Agent with
satisfactory  evidence  of such  compliance  in  excess of  $500,000;  provided,
however,   that  nothing  contained  herein  shall  preclude  the  Company  from
contesting  any such  compliance  orders or citations if such contest is made in
good faith, appropriate reserves are established for the payment for the cost of
compliance  therewith,  and the Collateral Agent's security interest in any such
property affected thereby (or the priority thereof) is not jeopardized.

Regardless of whether any Event of Default  hereunder shall have occurred and be
continuing,  the Company (i)  releases  and waives any present or future  claims
against the Collateral  Agent and each Holder for indemnity or  contribution  in
the event the Company becomes liable for any Environmental  Lien and/or Remedial
Action, and (ii) agrees to defend,  indemnify and hold harmless Collateral Agent
and each  Holder  from any and all  liabilities  (including  strict  liability),
actions,  demands,  penalties,  losses,  costs or expenses  (including,  without
limitation, reasonable attorneys fees and remedial costs), suits, administrative
orders, agency demand letters, costs of


                                       45


any settlement or judgment and claims of any and every kind whatsoever which may
now or in the future (whether before or after the termination of this Agreement)
be paid,  incurred,  or suffered by, or asserted against Collateral Agent or any
Holder by any Person or  Governmental  Authority  for,  with respect to, or as a
direct or indirect result of, the presence on or under, or the escape,  seepage,
leakage, spillage, discharge,  emission, or release from or onto the property of
the Company or any of its Subsidiaries of any Hazardous Materials,  regulated by
any Environmental Laws, contamination resulting therefrom, or arising out of, or
resulting   from,   the   environmental   condition  of  such  property  or  the
applicability  of  any  Environmental  Laws  relating  to  hazardous   materials
(including,  without limitation, CERCLA or any so called federal, state or local
"super fund" or "super lien" laws, statute,  ordinance,  code, rule, regulation,
order or decree) regardless of whether or not caused by or within the control of
Collateral  Agent or any Holder (the costs and/or  liabilities  described in (i)
and  (ii)  above   being   hereinafter   referred   to  as  the   "Environmental
Liabilities"). THE COVENANTS AND INDEMNITIES CONTAINED IN THIS SECTION 6.5 SHALL
SURVIVE THE TERMINATION OF THIS AGREEMENT,  BUT EXCLUDING ALL INDEMNITY  MATTERS
ARISING BY REASON OF THE GROSS  NEGLIGENCE OR WILLFUL  MISCONDUCT ON THE PART OF
ANY INDEMNIFIED PARTY; AND, PROVIDED,  HOWEVER, NO RELEASE,  WAIVER,  DEFENSE OR
INDEMNITY  SHALL BE AFFORDED  UNDER THIS  SECTION 6.5 IN RESPECT OF ANY PROPERTY
FOR ANY OCCURRENCE  ARISING FROM THE ACTS OR OMISSIONS OF THE  COLLATERAL  AGENT
AND/OR THE HOLDERS OR THEIR  AGENTS OR  REPRESENTATIVES  DURING THE PERIOD AFTER
WHICH SUCH PERSON, ITS SUCCESSORS OR ASSIGNS,  OR ITS AGENTS OR REPRESENTATIVES,
SHALL HAVE OBTAINED OWNERSHIP, OPERATION OR POSSESSION OF SUCH PROPERTY (WHETHER
BY FORECLOSURE OR DEED IN LIEU OF  FORECLOSURE,  AS  MORTGAGEE-IN-POSSESSION  OR
OTHERWISE).

     6.6.  Further  Assurances.  The Company  will, at any time and from time to
time, execute and deliver such further  instruments and take such further action
as may  reasonably be requested by the  Collateral  Agent,  in order to cure any
defects in the execution  and delivery of, or to comply with or  accomplish  the
covenants and agreements contained in this Agreement or the Security Documents.

     6.7.  Financial  Covenants.  The Company  shall  comply with the  following
covenants and ratios:

          (a) Maximum Debt to EBITDA Ratio. The Company shall maintain as of the
     last day of each Fiscal  Quarter a ratio of Total  Recourse Debt as of such
     day to EBITDA for the four Fiscal  Quarter Period ending on such day of not
     more than 3.50 to 1.0. For the purposes of this covenant,  EBITDA shall not
     include  the  net  revenue   attributable   to  assets  pledged  to  secure
     Non-Recourse  Indebtedness.  The term  "Total  Recourse  Debt"  shall  mean
     Company's consolidated Debt excluding Non-Recourse Indebtedness and Debt of
     any Unrestricted Subsidiary.

          (b) EBITDA to Interest Expense Ratio. The Company shall maintain as of
     the last day of each  Fiscal  Quarter a ratio of EBITDA for the four Fiscal
     Quarter Period ending on such day to Interest Expense for such period of at
     least 2.50 to 1.0.

                                       46


          (c) Tangible Net Worth.  As of April 30, 2005,  the Tangible Net Worth
     of the  Company  shall  be  greater  than  or  equal  to the sum of (i) the
     Tangible  Net  Worth of the  Company  as of  September  30,  2004 plus (ii)
     $12,500,000.

     6.8.  Operations.  The  Company  shall  conduct its  business  affairs in a
reasonable  and  prudent  manner and in  compliance  with all  applicable  Laws,
respecting  its  properties,  charters,  businesses  and  operations,  including
compliance with all minimum funding  standards and other  requirements of ERISA,
and other laws  applicable  to any employee  benefit  plans which they may have,
except to the extent the  failure to do so could not  reasonably  be expected to
cause a Material Adverse Effect.

     6.9. Change of Location.  The Company shall,  within ten (10) Business Days
prior to any such change, notify the Collateral Agent in writing of any proposed
change in the location of its chief executive office.

     6.10.  Employee  Benefit  Plans.  The Company will  maintain  each employee
benefit plan as to which it may have any liability,  in material compliance with
all applicable requirements of law and regulations.

     6.11. Field Audits; Other Information. Upon reasonable prior notice (unless
an Event of Default has occurred and is continuing in which event no such notice
shall be required) , the Company shall allow the  Collateral  Agent's  employees
and agents access to its books and records and properties during normal business
hours to perform  field  audits  from time to time.  The  Company  shall pay all
reasonable  costs and expenses  associated  with such field audits.  The Company
will provide the Collateral Agent with such other  information as the Collateral
Agent may  reasonably  request  from time to time,  subject  in all cases to any
confidentiality  restrictions  that may be  applicable  to the  Company  and its
Subsidiaries and to any confidentiality restrictions that the Company reasonably
imposes on the Persons  receiving  such  information;  provided,  however,  that
neither the Company nor any of its Subsidiaries shall be required to disclose to
the Collateral  Agent or any agents or  representatives  thereof any information
which is the subject of  attorney-client  privilege or  attorney's  work product
privilege properly asserted by the applicable Person to prevent the loss of such
privilege in connection with such information;  and provided,  further, that the
Company will use  commercially  reasonable  efforts to furnish such  information
(excluding  information  covered by  confidentiality  restrictions in agreements
relating  to seismic,  geologic or  geophysical  data or similar  technical  and
business matters relating to the exploration for oil and gas), which requirement
shall be satisfied if the Collateral  Agent is offered the opportunity to review
such confidential  information by executing or otherwise becoming a party to the
confidentiality  restrictions  on  substantially  the same terms  (including any
standstill provisions) as are applicable to the Company.

     6.12.  Insurance.  The  Company  shall  maintain  in effect  all  insurance
required by this Agreement and the Security Documents, and the Company agrees to
comply with the requirements of Section 5.6 above. The Company agrees to provide
the Collateral  Agent with  certificates  or binders  evidencing  such insurance
coverage on an annual  basis,  and, if requested by the  Collateral  Agent,  the
Company further agrees to promptly  furnish the Collateral  Agent with copies of
all renewal notices and copies of receipts for paid premiums.  The Company shall

                                       47


provide the Collateral Agent with certificates or binders  evidencing  insurance
coverage  pursuant to all renewal or replacement  policies of insurance no later
than  fifteen  (15) days  before any such  existing  policy or  policies  should
expire.

     6.13.  Subsidiaries.  The  Company  agrees that any  Subsidiary  (excluding
Unrestricted Subsidiaries,  if any) of the Company formed by or on behalf of the
Company  after  the date of this  Agreement  shall  execute  a  guaranty  of the
Indebtedness  (in a form  substantially  similar to the Guaranty) and all of the
Capital  Stock of such  Subsidiary  shall be owned by Company or a Guarantor and
Company  shall  comply,  and shall cause such  Subsidiary to comply with Section
6.15 promptly after the formation of such Subsidiary.

     6.14. Disclosure Requirements.  Prior to November 4, the Company shall file
a Current  Report on Form 8-K with the  Commission  describing  the terms of the
transactions  contemplated  herein and  including  as exhibits  to such  Current
Report on Form 8-K this Agreement and the exhibits to this Agreement in the form
and to the extent  required by the Exchange Act. In the event Company  elects to
satisfy  all or any part of the  Indebtedness  due on the  Maturity  Date or any
Voluntary  Redemption Date by the issuance of shares of Common Stock pursuant to
Sections 3.5 or 3.6, respectively, Company shall, concurrently with the delivery
of the Stock Payment Notice  required under Sections 3.5 or 3.6, as the case may
be, disclose to the public that such payment may be made by the issuance of such
Common  Stock by the filing of a Form 8-K with the  Commission  containing  such
information  including  the  maximum  number of shares that may be issued on the
Maturity  Date or such  Voluntary  Redemption  Date,  as the  case may be to the
extent substantially the same information (or the Company's intent or plans with
respect thereto) has not been  "previously  reported" as contemplated by General
Instruction B3 to Form 8-K.

     6.15. Collateral.

          (a) At all times the  Indebtedness  shall be secured by Liens in favor
     of the Collateral Agent for the benefit of the Holders (subject only to the
     first  and prior  Lien  securing  the  obligations  and  other  liabilities
     permitted under Section 7.5(l) and the other Permitted  Liens) covering and
     encumbering  any  and all Oil and Gas  Properties  (and  other  assets  and
     properties) of the Restricted  Persons  securing the  obligations and other
     liabilities  permitted  under  Section  7.5(l),  including  the  issued and
     outstanding  Capital Stock of each Subsidiary of the Company  securing such
     obligations.  Notwithstanding  the forgoing,  in the event the Tangible Net
     Worth of any Guarantor  (calculated with respect to CCBM without  including
     the Capital  Stock of Pinnacle so long as Pinnacle is not a  Subsidiary  of
     the  Company)  exceeds 3% or more of the  Tangible Net Worth of the Company
     and its Subsidiaries, on a consolidated basis, the Company shall cause such
     Guarantor to execute and deliver to  Collateral  Agent,  for the benefit of
     each Holder,  Mortgages in form and substance reasonably  acceptable to the
     Collateral  Agent and  substantially  similar to the  corresponding  Senior
     Credit  Document and duly  executed by such  Guarantor  together  with such
     other assignments,  conveyances,  amendments, agreements and other writings
     (each duly  authorized and executed) as Collateral  Agent shall  reasonably
     deem necessary or  appropriate to grant,  evidence and perfect the Liens in
     the assets and  properties  of such  Guarantor  (provided  that in no


                                       48


     event shall the Capital  Stock of Pinnacle be pledged as Collateral so long
     as Pinnacle is not a Subsidiary of the Company).

          (b) To the  extent  necessary  to comply  with the first  sentence  of
     Section 6.15(a),  Company or any other Restricted  Person,  as the case may
     be, shall execute and deliver to Collateral  Agent, for the ratable benefit
     of each Holder,  Mortgages in form and substance  reasonably  acceptable to
     Collateral  Agent and  substantially  similar to the  corresponding  Senior
     Credit Document and duly executed by any such Restricted  Persons  together
     with such other assignments,  conveyances, amendments, agreements and other
     writings (each duly authorized and executed) as Collateral Agent shall deem
     necessary or appropriate to grant,  evidence and perfect the Liens required
     by this Section 6.15.

          (c) To the  extent  necessary  to comply  with the first  sentence  of
     Section  6.15(a),  and, if earlier,  within 10 days after the execution and
     delivery of any security instrument,  agreement,  mortgage or deed of trust
     covering  or  encumbering   any  Oil  and  Gas  Properties  to  secure  any
     Indebtedness permitted under Section 7.5(l) not otherwise subject to a Lien
     in favor of Collateral  Agent to secure the  Indebtedness,  Company or each
     other Restricted  Person,  as the case may be, shall execute and deliver to
     Collateral  Agent,  for the ratable benefit of each Holder,  Mortgages,  in
     form  and  substance   reasonably   acceptable  to  Collateral   Agent  and
     substantially  similar to the  corresponding  Senior Credit Document,  duly
     executed  by  any  such   Restricted   Person   together  with  such  other
     assignments,  conveyances,  amendments, agreements and other writings (each
     duly  authorized and executed) as Collateral  Agent shall  reasonably  deem
     necessary or appropriate to grant,  evidence and perfect the Liens required
     by this Section.

          (d)  Subject to Section  6.17,  on or before 30 days after the Closing
     Date and at any time thereafter that Company or any of its  Subsidiaries is
     required to execute and deliver  Mortgages to Collateral  Agent pursuant to
     Section 6.15(a), the Company shall also deliver to Collateral Agent, within
     20 days after delivery of such Mortgages to Collateral  Agent,  evidence of
     title reasonably satisfactory to Collateral Agent to verify such Restricted
     Person's  title to not less than  ninety  percent  (90%) of the net present
     value of the proved reserves of the Oil and Gas Properties  subject to such
     Mortgages. With respect to such Restricted Person's title to such Property,
     such evidence may include check stubs,  revenue  receipts or other evidence
     that the Company or such Restricted  Person has been receiving  proceeds of
     production  for  a  reasonable  length  of  time  without  interruption  or
     challenge,  as well as joint  interest  billings  or other  evidence of the
     costs and  expenses of  operations  paid by the Company or such  Restricted
     Person.

          (e) On the date hereof and at the time  hereafter  that any Subsidiary
     of  any  Company  is  created  or  acquired  (other  than  an  Unrestricted
     Subsidiary) and to the extent such  Restricted  Person is required to do so
     pursuant to the Senior Credit  Documents,  the Company and any Subsidiaries
     of the  Company (as  applicable)  shall  execute and deliver to  Collateral
     Agent for the ratable  benefit of each  Holder (or to the


                                       49


     Senior Agent (or the Collateral  Agent if the Obligations  under the Senior
     Credit  Documents have been paid in full and the obligations of the lenders
     under the Senior Credit  Agreement has been  terminated) in the case of the
     certificates  described  below),  a stock  pledge  agreement  in  form  and
     substance  reasonably  acceptable  to  Collateral  Agent and  substantially
     similarly to the  corresponding  Senior  Credit  Document from such Company
     and/or its Subsidiaries  (as applicable)  covering the Capital Stock in all
     such  Subsidiaries,  together  with all  certificates  (or  other  evidence
     acceptable  to  Collateral  Agent)  evidencing  the issued and  outstanding
     Capital  Stock of each such  Subsidiary of every class owned by the Company
     or such Subsidiary (as applicable)  which, if  certificated,  shall be duly
     endorsed or accompanied by stock powers executed in blank (as  applicable),
     as Collateral Agent shall deem necessary or appropriate to grant,  evidence
     and  perfect  the Liens  required  by  Section  6.15(a)  in the  issued and
     outstanding Capital Stock of each such Subsidiary.

     6.16. Amendment of Disclosure Schedule. In connection with each issuance of
Additional  Notes,  the Company  shall,  subject to the approval of the Majority
Holders (which approval shall not be unreasonably  withheld),  amend and restate
the Disclosure  Schedule to the extent necessary to make the representations and
warranties  set forth in Section 5 true and correct  after giving  effect to the
issuance of such Additional  Notes and any other  transactions to be consummated
in connection therewith.

     6.17. Post Closing Requirements. The Company agrees that within ninety (90)
days from the  execution of this  Agreement,  the Company  shall (i) satisfy the
requirements  set forth in Section  12.17 of the Senior  Credit  Agreement as in
effect on the date  hereof and (ii) to the extent not  included  pursuant to the
immediately  preceding clause (i) satisfy the requirements set forth on Schedule
6.17.

     6.18.  Investment Base  Determination and Borrowing Base. By April 15th and
October  15th of each year  commencing  April 15,  2005,  and at any other  time
(including   prior  to  April  15,  2005)  the  Borrowing  Base  is  subject  to
redetermination  under the Senior Credit  Agreement the Company shall deliver to
the  Collateral  Agent (or its counsel if requested  by written  notice from the
Collateral  Agent to the Company  delivered not less than ten days prior to such
date), a proposed  Investment  Base calculated  based on the Engineering  Report
described in Sections  6.1(f) and 6.1(h),  respectively,  and in accordance with
the  methodology  and risk  percentages  set forth on the attached  Annex A. The
Collateral  Agent (or its counsel,  as the case may be) shall notify the Company
in writing within seven (7) days of the receipt of such proposed Investment Base
whether such  proposed  Investment  Base has been  approved or rejected,  (which
approval  or  rejection  shall  be made  by the  Majority  Holders)  and if such
proposed  Investment  Base is  approved  by the  Majority  Holders or no written
notice of approval or rejection  is received by the Company from the  Collateral
Agent (or its counsel, as the case may be) within such seven (7) day period such
proposed   Investment   Base  shall  be  the  Investment  Base  until  the  next
redetermination  of the Investment Base in accordance with this Section 6.18. In
the event the proposed  Investment Base is rejected by the Majority  Holders and
the  Company  and  the  Majority  Holders  cannot  agree  on the  amount  of the
Investment  Base  within  seven (7) days after the  delivery  to the  Company of
written notice of such rejection by the Collateral Agent (or its counsel, as the
case may be), the redetermined Investment Base shall be the Borrowing Base until


                                       50


the next  redetermination of the Investment Base in accordance with this Section
6.18.  As soon as  practicable  and in any event  within ten (10) days after the
receipt by the Company of notice of any redetermination of the Borrowing Base or
Quarterly  Reduction,  the Company  shall  notify the  Collateral  Agent of such
redetermined amount of the Borrowing Base and/or Quarterly Reduction.

                                  ARTICLE VII

                               NEGATIVE COVENANTS
                               ------------------

     To conform  with the terms and  conditions  under which each  Purchaser  is
willing to purchase the Notes from the Company,  and to induce each Purchaser to
enter into this Agreement to purchase the Notes, the Company warrants, covenants
and agrees  that until the full and final  payment of the  Indebtedness  and the
termination of this Agreement,  unless Majority  Holders have previously  agreed
otherwise:

     7.1. Limitations on Fundamental Changes.  Without the prior written consent
of the  Majority  Holders,  the  Company  shall  not form,  or permit  any other
Restricted Person to form, any Subsidiary (excluding Unrestricted  Subsidiaries)
that does not comply with Section  6.13,  nor shall the Company  consummate,  or
permit any Guarantor to liquidate or dissolve  itself (or suffer any liquidation
or dissolution).

     7.2. Disposition of Assets. Neither Company nor any Guarantor shall convey,
sell,  lease,  assign,  transfer or otherwise dispose of, any of its property or
assets to which the Banks have included a value in the Borrowing  Base in excess
of $5,000,000 in any fiscal year of the Company; provided that to the extent the
proceeds of such sales are cash, such proceeds are applied to the payment of the
Obligations  evidenced by the Senior Credit Documents in accordance with, and to
the extent required by, Section 13.2 of the Senior Credit Agreement as in effect
on the date hereof,  without  amendment  or waiver of any of the terms  thereof.
Notwithstanding  the  foregoing,   this  Section  7.2  shall  not  prohibit  the
consummation of sales of assets and properties  constituting a Change of Control
provided the Company complies with Section 3.5(b) with respect to such Change of
Control.

     7.3.  Repurchase of Stock;  Dividends.  The Company shall not, nor shall it
permit any other Restricted  Person to, (i) repurchase or redeem for cash any of
its  Common  Stock  (except  for   repurchases  and  redemption  of  Registrable
Securities  pursuant  to the  Registration  Rights  Agreement)  or (ii)  pay any
dividends or  distributions,  without the prior written  consent of the Majority
Holders; provided, however, that (a) so long as no Measurement Period is then in
effect, the Company may declare and pay dividends consisting entirely of Capital
Stock of the Company (other than Disqualified  Stock),  (b) the Company may make
cash payments in lieu of fractional  shares in an aggregate amount not exceeding
$100,000,  (c) the Company may declare and pay  distributions  effecting "poison
pill" rights plans provided that any securities or rights so distributed  have a
nominal fair market value at the time of declaration  and (d) any Subsidiary may
pay  dividends  to the  Company  or any  other  wholly-owned  Subsidiary  of the
Company.

                                       51


     7.4. Liens; Negative Pledge. The Company shall not, nor shall it permit any
other Restricted Person to, create,  incur,  assume or permit to exist any Liens
on any of its property now owned or hereafter acquired, except for the following
(hereinafter referred to as the "Permitted Liens"):

          (a) Liens for taxes,  assessments,  or other governmental  charges not
     yet due or which are being  contested in good faith by  appropriate  action
     promptly initiated and diligently  conducted,  if such reserves as shall be
     required by GAAP shall have been made therefor;

          (b) Liens of landlords,  vendors, carriers,  warehousemen,  mechanics,
     laborers, materialmen and other Liens arising by law in the ordinary course
     of business for sums either not yet due or being contested in good faith by
     appropriate  action promptly  initiated and diligently  conducted,  if such
     reserve as shall be required by GAAP shall have been made therefor;

          (c)  Inchoate  liens  arising  under  ERISA to secure  the  contingent
     liabilities, if any, permitted by this Agreement;

          (d) Liens  created by the  Security  Documents  and any other Liens in
     favor  of  the   Collateral   Agent   and/or  the  Holders  to  secure  the
     Indebtedness;

          (e)  Liens  granted  prior to the  date of this  Agreement  to  secure
     Non-Recourse  Indebtedness,  and/or  Liens  granted  after the date of this
     Agreement to secure Non-Recourse Indebtedness;

          (f) Liens  existing on the date hereof and set forth in the Disclosure
     Schedule,  provided  that such Liens shall  secure  only those  obligations
     which they secure on the date hereof;

          (g) Pledges and deposits  made in the  ordinary  course of business in
     compliance with workmen's  compensation,  unemployment  insurance and other
     social security laws or regulations;

          (h) Deposits to secure the performance of bids, trade contracts (other
     than for  Indebtedness),  leases  (other than capital  lease  obligations),
     statutory obligations, surety and appeal bonds, performance bonds and other
     obligations of a like nature incurred in the ordinary course of business;

          (i) Zoning restrictions,  easements, licenses, covenants,  conditions,
     rights-of-way,  restrictions  on use of real  property  and  other  similar
     encumbrances  incurred  in  the  ordinary  course  of  business  and  minor
     irregularities  of title that, in the  aggregate,  are not  substantial  in
     amount and do not materially detract from the value of the property subject
     thereto or  interfere  with the  ordinary  conduct of the  business  of the
     Company or any of its Subsidiaries;

                                       52


          (j) Deposits,  encumbrances or pledges to secure payments of workmen's
     compensation and other payments,  public liability,  unemployment and other
     insurance,  old-age pensions or other social security  obligations,  or the
     performance of bids, tenders,  leases,  contracts (other than contracts for
     the payment of money),  public or statutory  obligations,  surety,  stay or
     appeal bonds, or other similar  obligations  arising in the ordinary course
     of business;

          (k) Any Designated Title Exceptions which are incurred in the ordinary
     course of business and would not materially adversely affect the operations
     of the  Company or  otherwise  in the  aggregate  have a  Material  Adverse
     Effect;

          (l) Any Lien securing  Purchase  Money Debt,  provided  that, (i) such
     Lien is incurred, and the Debt secured thereby is created,  within 180 days
     after the  acquisition (or completion of  construction)  of the property or
     assets subject thereto,  (ii) the Debt secured thereby does not include any
     other  Debt that is not from the same  financing  source,  (iii)  such Lien
     encumbers  only such  acquired (or  constructed)  property or assets of the
     Company  or any  Subsidiary  and (iv) such Lien does not  affect any of the
     Mortgaged Properties included in the determination of the Borrowing Base;

          (m) Any Lien  existing  on any  property or asset  (together  with any
     receivables,  intangibles  and  proceeds  related  thereto)  prior  to  the
     acquisition  thereof by the Company or any  Subsidiary,  provided  that (i)
     such Lien is not created in  contemplation  of or in  connection  with such
     acquisition  and (ii) such Lien  does not  apply to any other  property  or
     assets of the Company or any Subsidiary;  and provided,  further,  that (x)
     such Liens do not secure any Debt or other  obligation not permitted  under
     this  Agreement,  and (y) such  Liens do not  affect  any of the  Mortgaged
     Properties included in the determination of the Borrowing Base;

          (n) Liens securing  Purchase Money Debt and Capital Lease  Obligations
     in real property, improvements thereto or equipment hereafter acquired (or,
     in the case of improvements,  constructed) by the Company or any Subsidiary
     (together with any receivables,  intangibles and proceeds related thereto),
     provided that (i) such security  interests secure Debt permitted by Section
     7.5(k)(i),  (ii) such security interests are incurred, and the Debt secured
     thereby is created,  within 180 days after such  acquisition (or completion
     of construction),  (iii) such security  interests do not apply to any other
     property or assets of the Company or any Subsidiary, and (iv) such security
     interests  do not affect any of the  Mortgaged  Properties  included in the
     determination of the Borrowing Base;

          (o) Liens  arising out of  judgments or awards in respect of which the
     Company shall in good faith be  prosecuting  an appeal or  proceedings  for
     review and in respect of which it shall have secured a  subsisting  stay of
     execution  pending  such appeal or  proceedings  for review,  provided  the
     Company shall have set aside on its books adequate reserves,  in accordance
     with GAAP, with respect to such judgment or award;

                                       53


          (p) Liens on the property or assets of any Person existing at the time
     such Person  becomes a  Subsidiary  of the  Company  and not  incurred as a
     result  of (or in  connection  with or in  anticipation  of) such  Person's
     becoming  a  Subsidiary  of the  Company,  provided  that such Liens do not
     extend to or cover any  property  or  assets of the  Company  or any of its
     Subsidiaries  other than the property or assets encumbered at the time such
     Person becomes a Subsidiary of the Company, and provided, further, that (i)
     such Liens do not secure any Debt or other  obligation not permitted  under
     this  Agreement,  and (ii) such Liens do not  affect  any of the  Mortgaged
     Properties included in the determination of the Borrowing Base;

          (q) Liens securing Debt and other Obligations permitted to be incurred
     under Sections 7.5(i) and 7.5(l); and

          (r) Liens  affecting the Company's  equity interest in an Unrestricted
     Subsidiary.

     7.5. Debts. The Company,  without the prior written consent of the Majority
Holders,  will not, nor will it permit any other  Restricted  Person to,  incur,
create,  assume or in any  manner  become or be liable in respect of any Debt or
issue any Disqualified Stock, except for:

          (a) The Indebtedness;

          (b) Trade  payables or operating  leases from time to time incurred in
     the ordinary course of business;

          (c) Non-Recourse Indebtedness not to exceed $25,000,000.00 at any time
     outstanding,  provided that for any Non-Recourse  Indebtedness  incurred by
     Company  subsequent  to the execution of this  Agreement,  the Company must
     obtain  the  Majority  Holder's  prior  written  consent  to  the  relevant
     documentation establishing/evidencing the non-recourse nature and amount of
     such  Non-Recourse  Indebtedness,  which  consent will not be  unreasonably
     withheld;

          (d) Taxes,  assessments or other government  charges which are not yet
     due or are being  contested in good faith by  appropriate  action  promptly
     initiated and diligently conducted, if such reserve as shall be required by
     generally accepted accounting principles shall have been made therefore;

          (e) The indebtedness  evidenced by the  Subordinated  Promissory Notes
     and  guaranties  executed by any  Subsidiary  of the  Company  guaranteeing
     payment thereof;

          (f) Debt (excluding Non-Recourse Indebtedness) existing as of the date
     of this  Agreement as set forth in the Disclosure  Schedule,  together with
     extensions or refinancings (but not increases) of such Debt;

          (g)  Indebtedness  arising  under any  performance  bond, or letter of
     credit obtained for similar purposes,  or any reimbursement  obligations in
     respect thereof, entered into in the ordinary course of business;

                                       54


          (h) Debt of the  Company to any  Guarantor  of the Company and Debt of
     any Guarantor to the Company or any other Guarantor of the Company;

          (i) Debt  represented by Hedging  Agreements  permitted  under Section
     7.6(l);

          (j) Guaranties by the Company of Debt of any Guarantor permitted under
     this  Section 7.5 and by any  Guarantor of Debt of the Company or any other
     permitted under this Section 7.5;

          (k)  Subject  to a  maximum  aggregate  principal  amount  at any time
     outstanding  not in excess of  $1,000,000.00,  the following:  (i) Purchase
     Money Debt and Capital Lease Obligations;  (ii) additional  unsecured Debt;
     and (iii)  Debt of any  Person  that  becomes a  Subsidiary  after the date
     hereof;  provided,  that such Debt exists at the time such Person becomes a
     Subsidiary  and is not created in  contemplation  of or in connection  with
     such Person becoming a Subsidiary; and

          (l) All  "Indebtedness"  under and as  defined  in the  Senior  Credit
     Agreement,  now existing or  hereinafter  created,  under the Senior Credit
     Documents;  provided,  that,  (i) the  aggregate  principal  amount of such
     "Indebtedness"  does not, at any time, exceed the lesser of (1) 110% of the
     Investment  Base and (2) the Borrowing  Base; and (ii) such  "Indebtedness"
     with respect to Hedging  Agreements  between the Company and any  Guarantor
     and any Bank or Affiliate of any Bank is permitted  under  Section  7.6(l);
     provided  further  that no  Default or Event of  Default  shall  occur as a
     result of the principal amount of the "Indebtedness"  exceeding the amounts
     permitted  under clause (i) of this  Section  7.5(l) so long as the Company
     complies with Section 8.3 of the Senior  Credit  Agreement (as in effect on
     the date hereof or as subsequently amended with the consent of the Majority
     Holders) with respect to such excess principal amount.

     7.6. Investments, Loans and Advances. Except as set forth on the Disclosure
Schedule,  the Company will not, nor will it permit any other Restricted  Person
to,  make or permit  to remain  outstanding  any  loans or  advances  to or make
investments or acquire an equity interest in any Person, except for:

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

          (b) Investments in commercial  paper maturing within 270 days from the
     date of acquisition  thereof and having,  at such date of acquisition,  the
     highest credit rating  obtainable from Standard & Poor's Ratings Service or
     from Moody's Investors Service, Inc.;

          (c)  Investments in  certificates  of deposit,  banker's  acceptances,
     repurchase  agreements and time deposits  maturing within one year from the
     date of  acquisition


                                       55


     thereof  issued or guaranteed by or placed with,  and money market  deposit
     accounts  issued or offered by, any domestic  office of any commercial bank
     organized  under  the laws of the  United  States of  America  or any State
     thereof that has a combined  capital and surplus and  undivided  profits of
     not less than $250,000.000;

          (d) Shares of funds  registered  under the  Investment  Company Act of
     1940, as amended, that have assets of at least $100,000,000 and invest only
     in  obligations  described  in clauses  (a) through (c) above to the extent
     that such shares are rated by Moody's Investors Service, Inc. or Standard &
     Poor's Ratings Service in one of the two highest rating categories assigned
     by such agency for shares of such nature;

          (e) Loans among Restricted Persons and/or capital contributions and/or
     investments among Restricted Persons;

          (f) Loans or advances to employees in the ordinary  course of business
     in an aggregate amount to any single employee not in excess of $75,000 (or,
     if and to the extent such loans or advances  shall be used by such employee
     for  relocation  expenses,  $100,000)  and in an  aggregate  amount for all
     employees of the Company and its  Subsidiaries not in excess of $500,000 at
     any one time outstanding;

          (g) Trade  credits  and  accounts  arising in the  ordinary  course of
     business;

          (h)  Investments   made  as  a  result  of  the  receipt  of  non-cash
     consideration  from  an  asset  sale  that  was  made  pursuant  to  and in
     compliance with this Agreement;

          (i)  Investments  made in any debtor of the Company as a result of the
     receipt of Capital Stock,  obligations or securities in settlement of debts
     created in the ordinary  course of business and owing to the Company or any
     of its Subsidiaries;

          (j)  Investments  made  pursuant  to  the  requirements  of  farm-out,
     farm-in,  joint  operating,  joint  venture  or  area  of  mutual  interest
     agreements,  gathering  systems,  pipelines  or other  similar or customary
     arrangements  entered into in the ordinary  course of business  (including,
     without  limitation,  advances  to  operators  under  operating  agreements
     entered into by Company in the ordinary course of business)  (provided that
     any such single investment in excess of $1,000,000 shall be approved by the
     Board of Directors of the Company);

          (k) Investments made in connection with the purchase,  lease, or other
     acquisition  of  tangible  assets of any  Person  and  investments  made in
     connection  with  the  purchase,  lease  or  other  acquisition  of  all or
     substantially  all of the business,  of any Person, or Capital Stock of any
     Person,  or any  division,  line of business or business unit of any Person
     (including,  without limitation, (i) by the merger or consolidation of such
     Person  into the Company or any of its  Subsidiaries  or by the merger of a
     Subsidiary  of the Company into such Person and (ii) the purchase of proved
     reserves);

          (l) Investments by Company  consisting of Hedging  Agreements  entered
     into with Approved  Counterparties  in the ordinary  course of business and
     not for  speculative


                                       56


     purposes;  provided  that such Hedging  Agreements  (a) would not cause the
     aggregate notional amount of Hydrocarbons under all Hedging Agreements then
     in effect to exceed eighty-five percent (85%) of the "forecasted production
     from proved  reserves" (as defined  below) of the Company's and  Guarantors
     for the forthcoming  three (3) year period,  or (b) together with any other
     Hedging  Agreements then in effect for the purpose of hedging the Company's
     interest  rate  exposure  would not cause the  notional  amount of all such
     Hedging  Agreements  then in effect for such  purpose to exceed one hundred
     percent  (100%) of the Total  Recourse Debt of the Company  projected to be
     outstanding  for any period covered by such Hedging  Agreement.  As used in
     this  clause  (l)  of  Section  7.6,  "forecasted  production  from  proved
     reserves"  means the forecasted  production of Hydrocarbons as reflected in
     the most  recent  Engineering  Report  delivered  to the  Collateral  Agent
     pursuant to clauses (f) and (h) of Section 6.1,  after giving effect to any
     pro  forma   adjustments  for  the  consummation  of  any  acquisitions  or
     dispositions since the effective date of such Engineering Report;

          (m) So long as no  Default  or Event of Default  has  occurred  and is
     continuing  or  would  be  caused  thereby,   Investments  by  the  Company
     consisting  of equity  contributions  in CCBM to the  extent  necessary  to
     permit CCBM to purchase Capital Stock of Pinnacle  pursuant to that certain
     Contribution and Subscription Agreement by and among CCBM, Pinnacle,  Rocky
     Mountain Gas, Inc., a Wyoming corporation, and the CSFB Parties (as defined
     therein) as in effect on the date hereof,  in an aggregate amount after the
     Closing Date not to exceed the sum of $5,000,000  plus the annual  increase
     in the  purchase  price per share of such Capital  Stock  specified in such
     agreement  and the purchase of such Capital Stock by CCBM with the proceeds
     of such equity  contribution  by the Company;  provided the proceeds of the
     Notes are not used to make any such Investment;

          (n)  Investments   consisting  of  the  repurchase  or  redemption  of
     Registrable Securities pursuant to the Registration Rights Agreement; and

          (o) Any other  investments  in any  Person  having an  aggregate  fair
     market  value  (measured  on the date  each  such  investment  was made and
     without giving effect to subsequent changes in value),  when taken together
     with all other  investments  made  pursuant  to this  clause  (o) since the
     Closing Date not to exceed at any time outstanding $1,000,000 (after giving
     effect to any reductions in the aggregate  amount of such  investments as a
     result of the disposition thereof, including through liquidation, repayment
     or other reduction, including by way of dividend or distribution, for cash,
     the aggregate  amount of such reductions not to exceed the aggregate amount
     of such investments outstanding and previously made pursuant to this clause
     (o)).

     7.7. Other  Agreements.  The Company will not, nor will it permit any other
Restricted  Person to, enter into any agreement  containing any provision  which
would be violated or breached by the performance of its obligations hereunder or
under any instrument or document delivered or to be delivered by it hereunder or
in connection herewith; provided that subject to compliance with Section 3.5(b),
the Company may agree to the redemption or repurchase of its  securities  upon a
change of control or dissolution, winding-up or liquidation of, or the merger or

                                       57


sale of substantially  all the assets of, the Company  (provided that nothing in
this Section 7.7 shall permit any action  otherwise  prohibited  by Sections 7.1
and 7.2 hereof.).

     7.8.  Transactions  with Affiliates.  Except as set forth on the Disclosure
Schedule  attached hereto,  the Company shall not, nor shall it permit any other
Restricted Person to, sell or transfer any property or assets to, or purchase or
acquire  any  property  or  assets  from,  or  otherwise  engage  in  any  other
transactions  with,  any of its Affiliates  unless such  transaction is on terms
that are no less favorable to the Company or such Restricted Person, as the case
may be, than those that could be obtained at the time of such  transaction on an
arm's-length basis from a Person who is not an Affiliate and if such transaction
involves an amount in excess of $500,000,  such transaction has been approved by
a  majority  of the  disinterested  members  of the  Board of  Directors  of the
Company;  provided,  however,  that  this  Section  7.8 (i)  shall  not apply to
transactions  between  a  Guarantor  and  the  Company  or any  other  Guarantor
permitted under this Agreement, or between Pinnacle and the Company or any other
Restricted Person; (ii) shall not prohibit any individual serving as an officer,
director,  employee or consultant of the Company or any other Restricted  Person
from (A)  receiving  reasonable  compensation,  benefits or  indemnification  in
connection  with his or her  services  in such  capacity  (except  as  otherwise
included   hereby),   provided   that  any  such   compensation,   benefits   or
indemnification  are approved by a majority of the disinterested  members of the
Board of  Directors  of the  Company  or by the  Compensation  Committee  of the
Company,  (B) receiving  advances for travel or other business  expenses made in
the ordinary course of business to the extent  permitted under this Agreement or
(C)  participating  in any  benefit or  compensation  plan;  and (iii) shall not
restrict the Company from repaying to any director or its Affiliates when due on
its  scheduled  maturity  dates  any Debt for  borrowed  money  permitted  to be
incurred in accordance with this Agreement.

     7.9.  Second  Priority  Liens.  No Restricted  Person shall,  nor shall any
Restricted  Person  permit  any  other  Restricted  Person  to,  enter  into any
agreement containing any provision which would grant a Lien on any of its assets
or  properties to any holder of the Senior  Indebtedness  unless a similar Lien,
subject  only to Permitted  Liens,  is granted to the  Collateral  Agent for the
benefit of the  Holders on terms and  conditions  reasonably  acceptable  to the
Collateral Agent.

     7.10.  Commodity  Transactions.  Neither  Company nor any other  Restricted
Person shall enter into any Hedging  Agreements  other than  Hedging  Agreements
permitted under Section 7.6(l).

     7.11.  Restriction  of  Amendments  to  First  Lien  Credit  Documents.  No
Restricted Person shall amend or otherwise modify, or waive any rights under the
Senior Credit Documents, if, in any case, such amendment, modification or waiver
would be in contravention of the provisions of the Subordination Agreement.

                                  ARTICLE VIII

                                    DEFAULTS
                                    --------

     8.1. Events of Default.  Each of the following events  constitutes an Event
of Default under this Agreement:

                                       58


          (a) Default under the Indebtedness.  Should the Company default in the
     payment of principal under the  Indebtedness of the Company to the Holders,
     or  should  the  Company  default  in the  payment  of  interest  under the
     Indebtedness  of the Company to the Holders within three (3) days after any
     such interest payment is due.

          (b) Default under this  Agreement.  Should the Company violate or fail
     to comply fully with any of the terms and  conditions of, or default under,
     this Agreement (other than Section  8.1(a)),  and such default not be cured
     within thirty (30) days of the occurrence thereof (provided,  however, that
     no cure  period  shall be  available  for a default  in the  obligation  to
     maintain  insurance  coverages  required hereby or a default under Sections
     6.14, 6.16 or 7.5).

          (c)  Default  Under Other  Documents.  (i) Should any event of default
     occur or exist under any of the Documents (other than this Agreement or the
     Registration  Rights  Agreement) or should the Company and/or any Guarantor
     violate,  or fail to comply fully with,  any terms and conditions of any of
     the  Documents  (other  than  this  Agreement  or the  Registration  Rights
     Agreement),  and such  default  not be cured  within  ten (10)  days of the
     occurrence  thereof or (ii) should the  Company  fail to comply with any of
     its  obligations  under the  Registration  Rights  Agreement to  repurchase
     Registrable Securities.

          (d) Other Defaults in Favor of the Holders.  Should the Company and/or
     the Guarantor default under any other loan,  extension of credit,  security
     agreement,  or other  obligation in favor of any of the Holders (other than
     the Registration Rights Agreement) and fail to cure same in accordance with
     any applicable cure periods.

          (e)  Default  in Favor of Third  Parties.  Should  the  Company or any
     Guarantor  (i) fail to pay Debt  having a  principal  amount  in  excess of
     $250,000 in the  aggregate  (other than the amounts  referred to in Section
     8.1(a)), or any interest or premium thereon,  when due (or, if permitted by
     the terms of the relevant  document,  within any applicable  grace period),
     whether  such Debt shall  become due by  scheduled  maturity,  by  required
     prepayment,  by  acceleration,  by  demand  or  otherwise;  or (ii) fail to
     perform any term,  covenant or condition on its part to be performed  under
     any agreement or instrument evidencing, securing or relating to Debt having
     a principal amount in excess of $250,000 in the aggregate, when required to
     be performed,  and such failure shall continue  after the applicable  grace
     period, if any, specified in such agreement or instrument, if the effect of
     such failure is to  accelerate,  or to permit the holder or holders of such
     Debt to accelerate, the maturity of such Debt.

          (f) Insolvency. The following occurrences,  in addition to the failure
     or suspension of the Company or any Guarantor, shall constitute an Event of
     Default hereunder:

               (i)  Filing  by the  Company  or  any  Guarantor  of a  voluntary
          petition   or  any   answer   seeking   reorganization,   arrangement,
          readjustment of its debts or for any other relief under any applicable
          bankruptcy  act or law, or under any other


                                       59


          insolvency act or law, now or hereafter existing, or any action by the
          Company or any Guarantor  consenting to,  approving of, or acquiescing
          in, any such petition or proceeding; the application by the Company or
          any Guarantor for, or the appointment by consent or acquiescence of, a
          receiver  or trustee  of the  Company  or any  Guarantor  for all or a
          substantial part of the property of the Company or any Guarantor;  the
          making by the  Company  or any  Guarantor,  of an  assignment  for the
          benefit of creditors; the inability of the Company or any Guarantor or
          the  admission  by the Company or any  Guarantor  in  writing,  of its
          inability  to pay its debts as they  mature  (the term  "acquiescence"
          means the failure to file a petition or motion in  opposition  to such
          petition or proceeding  or to vacate or discharge any order,  judgment
          or decree providing for such appointment  within sixty (60) days after
          the appointment of a receiver or trustee); or

               (ii) Filing of an involuntary petition against the Company or any
          Guarantor  in  bankruptcy  or  seeking  reorganization,   arrangement,
          readjustment of its debts or for any other relief under any applicable
          bankruptcy  act or law, or under any other  insolvency act or law, now
          or  hereafter  existing  and  such  petition  remains  undismissed  or
          unanswered  for a period of sixty (60) days from such  filing;  or the
          insolvency  appointment of a receiver or trustee of the Company or any
          Guarantor for all or a substantial part of the property of the Company
          or any Guarantor and such appointment  remains  unvacated or unopposed
          for a period of sixty (60) days from such  appointment,  execution  or
          similar process  against any  substantial  part of the property of the
          Company  or  any  Guarantor  and  such  warrant  remains  unbonded  or
          undismissed for a period of sixty (60) days from notice to the Company
          or such Guarantor of its issuance.

          (g) Dissolution Proceedings. Should proceedings for the dissolution or
     appointment of a liquidator of the Company or any Guarantor be commenced.

          (h) False  Statements.  Should any  representation  or warranty of the
     Company made by the Company to the  Collateral  Agent and/or the Holders in
     this  Agreement or any other  Document or in any  certificate  or statement
     furnished  thereunder  prove to be incorrect or  misleading in any material
     respect when made or  reaffirmed  the result of which could  reasonably  be
     expected to have a Material Adverse Effect.

     8.2.  Waivers.  Except as otherwise  provided for in this  Agreement and by
applicable law, the Company and the Guarantor  waive to the extent  permitted by
applicable law (i)  presentment,  demand and protest and notice of  presentment,
dishonor,  notice of  intent to  accelerate,  notice of  acceleration,  protest,
default,  nonpayment,  maturity, release, compromise,  settlement,  extension or
renewal of any or all commercial paper,  accounts,  contract rights,  documents,
instruments,  chattel paper and guaranties at any time held by the Agent for the
benefit of the Holders on which the Company and the  Guarantor may in any way be
liable and hereby ratify and confirm  whatever the  Collateral  Agent and/or the
Holders may do in this regard,  (ii) all rights to notice and a hearing prior to
the  Collateral  Agent's  taking  possession or control of, or to the Collateral
Agent's replevy, attachment or levy upon, the Collateral or any bond or security
which might be required by any court prior to allowing the  Collateral  Agent to

                                       60


exercise any of its remedies, and (iii) the benefit of all valuation,  appraisal
and exemption  laws.  The Company and the Guarantor  acknowledge  that they have
been  advised by counsel of their  choice with  respect to this  Agreement,  the
other  Documents,  and the  transactions  evidenced by this  Agreement and other
Documents.

     8.3. Notice to Delta Farms Lessors.  Company and Guarantor hereby authorize
and  direct the  Collateral  Agent to provide  the  lessors of the oil,  gas and
mineral leases granted by Delta Farms to the Company (the "Delta Farms Lessors")
with a copy of any  notice  of the  occurrence  of any  Event of  Default  which
Collateral  Agent may choose or be required to send to Company and/or  Guarantor
under the Agreement.  Company and Guarantor  hereby release the Collateral Agent
and the Holders and hold the Collateral  Agent and the Holders harmless from any
liability occasioned by the giving of or the failure to give any such notice, it
being understood that the Collateral Agent shall use its best efforts to provide
such  notice  to the  Delta  Farms  Lessors,  but shall  have no  obligation  or
liability  to  Delta  Farms   Lessors  for  its  failure  to  do  so.  Under  no
circumstances  shall  Delta  Farms  Lessors  be  considered  as  a  third  party
beneficiary of this Agreement.

                                   ARTICLE IX

                 ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES
                 ----------------------------------------------

     9.1.  Acceleration.  If any Event of Default  described in Sections  8.1(f)
occurs with respect to any Restricted Person, the Indebtedness shall immediately
become  due and  payable  without  any  election  or  action  on the part of the
Collateral  Agent or any  Holder.  If any other  Event of  Default  occurs,  the
Majority  Holders  (or the  Collateral  Agent with the  consent of the  Majority
Holders) may declare the Indebtedness to be due and payable, or both,  whereupon
the Indebtedness shall become immediately due and payable,  without presentment,
demand, protest or notice of any kind, all of which the Company hereby expressly
waives.

     If,  within  thirty  (30) days after  acceleration  of the  maturity of the
Indebtedness  as a result  of any  Event of  Default  (other  than any  Event of
Default as described in Sections  8.1(f) with respect to any Restricted  Person)
and before any judgment or decree for the payment of the  Indebtedness due shall
have been obtained or entered,  the Majority  Holders (in their sole discretion)
shall so direct,  then the  Collateral  Agent  shall,  by notice to the Company,
rescind and annul such acceleration and/or termination.

     9.2.  Amendments.  Subject  to the  provisions  of this  Section  9.2,  the
Majority  Holders  (or the  Collateral  Agent with the consent in writing of the
Majority   Holders)  and  each  Restricted  Person  may  enter  into  agreements
supplemental hereto for the purpose of adding or modifying any provisions to the
Documents or changing in any manner the rights of the Holders or such Restricted
Person hereunder or waiving any Default hereunder;  provided,  however,  that no
such  supplemental  agreement  shall,  without the consent of all of the Holders
affected thereby:

          (a) Extend the  Maturity  Date or  forgive  all or any  portion of the
     principal amount thereof,  or reduce the rate or extend the time of payment
     of interest or fees thereon.

                                       61


          (b) Reduce the  percentage  specified  in the  definition  of Majority
     Holders.

          (c) Amend this Section 9.2.

          (d) Release any Guarantor or, except as otherwise  provided in Section
     11.15, release any of the Collateral.

No amendment of any provision of this Agreement relating to the Collateral Agent
shall be effective without the written consent of the Collateral Agent.

     9.3.  Preservation  of Rights.  No delay or  omission of the Holders or the
Collateral  Agent to exercise  any right under the  Documents  shall impair such
right or be  construed  to be a waiver of any  Default or Event of Default or an
acquiescence therein. Any single or partial exercise of any such right shall not
preclude other or further  exercise  thereof or the exercise of any other right,
and no  waiver,  amendment  or  other  variation  of the  terms,  conditions  or
provisions of the Documents  whatsoever  shall be valid unless in writing signed
by the Holders required  pursuant to Section 9.2, and then only to the extent in
such writing  specifically set forth. All remedies contained in the Documents or
afforded by law shall be cumulative and all shall be available to the Collateral
Agent and the Holders until the Indebtedness has been paid in full.

                                   ARTICLE X

                                COLLATERAL AGENCY
                                -----------------

     10.1.  Creation of Collateral Agency. In order to provide for the creation,
perfection and maintenance of all Liens granted under Security Documents and for
the  enforcement  of the various  rights and  remedies set forth in the Security
Documents, the Purchasers hereby appoint PCRL Investments L.P. as the Collateral
Agent under this Agreement and the other Security Documents,  and the Collateral
Agent hereby accepts its appointment subject to the terms and conditions of this
Agreement and the Security Documents.  Company hereby reaffirms and confirms the
grant of the Liens in favor of the Collateral Agent in accordance with the terms
of the  Security  Documents  and for the  benefit  of the  Holders  as set forth
therein and herein.

     10.2.  Possession  and Use of  Collateral.  So long as no Event of  Default
exists,  Company shall have the right to remain in possession and retain control
of the Collateral  (other than any Collateral for which  applicable law requires
that  Liens on such  Collateral  be  perfected  by  control  or  possession)  in
accordance with, and to the extent permitted by, the terms of the  Subordination
Agreement and the terms of the Security Documents.

     10.3. Additional Collateral.  At any time, Company and the Collateral Agent
may,  without  necessity  of consent  from the  Holders,  enter into one or more
Security Documents, in form reasonably satisfactory to the Collateral Agent: (a)
to  supplement or add to the covenants of Company for the benefit of all Holders
or to surrender any right or power  conferred upon the Company;  (b) to mortgage
or pledge to the Collateral  Agent, or grant a security interest in favor of the
Collateral  Agent in, any  property  or assets as  additional  security  for the
Indebtedness;  or (c) to cure  any  ambiguity,  to  correct  or  supplement  any
provision  herein  or in  any  Security


                                       62


Document which may be defective or inconsistent  with any other provision herein
or therein,  or to make any other provision with respect to matters or questions
arising hereunder which shall not be inconsistent with any provision hereof. The
Collateral  Agent and the  Holders  agree that the forms of  Security  Documents
being  executed and  delivered  concurrently  with (and dated of even date with)
this Agreement are satisfactory to such parties.  The Company and the Guarantors
will deliver or cause to be delivered to the Collateral Agent, promptly upon the
execution and delivery thereof,  executed counterparts of all Security Documents
and all amendments and supplements  thereto. The Collateral Agent shall keep all
Security  Documents  held  by it at the  principal  office  maintained  by it in
Dallas,  Texas,  or, if none is there  maintained,  at its  primary  address for
notice under this Agreement,  shall provide copies of such Security Documents to
the Holders  within a  reasonable  time after its  receipt of a written  request
therefor,  and permit any Holder or the  representative  thereof to inspect  the
same at such office during normal business hours upon reasonable prior notice.

     10.4.  Releases of  Collateral.  The  Collateral  Agent  shall  execute and
deliver to the Restricted Persons on behalf of the Holders and other Persons, if
any,  secured by the  Collateral,  any  agreements,  documents or instruments as
shall be necessary or  appropriate  to effect any releases of  Collateral  which
shall be  required  by the  terms  hereof or of any  other  Document,  including
releases  required pursuant to sales of Collateral that are not prohibited under
Section 7.2, which shall otherwise have been approved by the Majority Holders in
writing,   or  as   otherwise   required   by   the   Subordination   Agreement.
Notwithstanding anything to the contrary herein, in the event any portion of the
Indebtedness is satisfied by the issuance of Registrable Securities,  except for
sales of Collateral  that are not  prohibited  under Section 7.2 or as otherwise
required  by the  Subordination  Agreement,  none  of the  Collateral  shall  be
released until the repurchase  obligations of the Company under the Registration
Rights Agreement have terminated in accordance with its terms.

                                   ARTICLE XI

                                COLLATERAL AGENT
                                ----------------

     11.1. Appointment; Nature of Relationship. PCRL is hereby appointed by each
of the  Holders as its  contractual  representative  (herein  referred to as the
"Collateral  Agent")  hereunder and under each other  Document,  and each of the
Holders  irrevocably  authorizes the Collateral  Agent to act as the contractual
representative  of such  Holder with the rights and duties  expressly  set forth
herein and in the other  Documents.  The Collateral  Agent agrees to act as such
contractual representative upon the express conditions contained in this Article
XI.  Notwithstanding  the use of the  defined  term  "Collateral  Agent,"  it is
expressly  understood  and agreed that the  Collateral  Agent shall not have any
fiduciary  responsibilities  to any  Holder by reason of this  Agreement  or any
other Document and that the Collateral Agent is merely acting as the contractual
representative  of the Holders with only those duties as are expressly set forth
in this  Agreement  and the other  Documents.  In its  capacity as the  Holders'
contractual representative,  the Collateral Agent (i) does not hereby assume any
fiduciary  duties  to any of the  Holders,  (ii)  is a  "representative"  of the
Holders  within the  meaning of the term  "Secured  Party" as defined in the New
York Uniform Commercial Code, and (iii) is acting as an independent  contractor,
the rights and duties of which are limited to those  expressly set forth in this

                                       63


Agreement and the other  Documents.  Each of the Holders hereby agrees to assert
no claim against the  Collateral  Agent on any agency theory or any other theory
of  liability  for breach of  fiduciary  duty,  all of which  claims each Holder
hereby waives.

     11.2.  Powers. The Collateral Agent shall have and may exercise such powers
under the Documents as are specifically delegated to the Collateral Agent by the
terms of each thereof,  together with such powers as are  reasonably  incidental
thereto.  The Collateral  Agent shall have no implied duties to the Holders,  or
any  obligation to the Holders to take any action  thereunder  except any action
specifically provided by the Documents to be taken by the Collateral Agent.

     11.3.  General  Immunity.  Neither  the  Collateral  Agent  nor  any of its
directors,  officers,  agents or  employees  shall be  liable to any  Restricted
Person, the Holders or any Holder for any action taken or omitted to be taken by
it or them  hereunder or under any other  Document or in connection  herewith or
therewith  except to the extent such action or inaction is determined in a final
non-appealable judgment by a court of competent jurisdiction to have arisen from
the gross negligence or willful misconduct of such Person.

     11.4. No Responsibility  for Loans,  Recitals,  etc. Neither the Collateral
Agent  nor  any of  its  directors,  officers,  agents  or  employees  shall  be
responsible  for or have any duty to ascertain,  inquire into, or verify (a) any
statement,  warranty or  representation  made in connection with any Document or
any  borrowing  hereunder;  (b)  the  performance  or  observance  of any of the
covenants or agreements of any obligor  under any Document,  including,  without
limitation,  any agreement by an obligor to furnish information directly to each
Holder;  (c) the  satisfaction of any condition  specified in Article IV, except
receipt of items required to be delivered  solely to the Collateral  Agent;  (d)
the existence or possible existence of any Default or Event of Default;  (e) the
validity,  enforceability,  effectiveness,  sufficiency  or  genuineness  of any
Document or any other instrument or writing  furnished in connection  therewith;
(f) the value, sufficiency,  creation, perfection or priority of any Lien in any
collateral  security;  or (g) the  financial  condition  of the  Company  or any
Guarantor  of any of the  Indebtedness  or of any of the  Company's  or any such
Guarantor's respective Subsidiaries.  The Collateral Agent shall have no duty to
disclose to the Holders  information that is not required to be furnished by the
Company to the Collateral  Agent at such time,  but is voluntarily  furnished by
the Company to the  Collateral  Agent (either in its capacity as the  Collateral
Agent or in its individual capacity).

     11.5. Action on Instructions of Holders.  The Collateral Agent shall in all
cases be fully protected in acting, or in refraining from acting,  hereunder and
under any other Document in accordance with written  instructions  signed by the
Majority  Holders,  and such instructions and any action taken or failure to act
pursuant  thereto  shall be binding on all of the  Holders.  The Holders  hereby
acknowledge  that  the  Collateral  Agent  shall  be  under  no duty to take any
discretionary  action  permitted to be taken by it pursuant to the provisions of
this Agreement or any other Document  unless it shall be requested in writing to
do so by the Majority Holders.  The Collateral Agent shall be fully justified in
failing or refusing to take any action  hereunder  and under any other  Document
unless it shall first be indemnified to its satisfaction by the Holders pro rata
against any and all  liability,  cost and expense that it may incur by reason of
taking or continuing to take any such action.

                                       64


     11.6. Employment of the Collateral Agents and Counsel. The Collateral Agent
may execute any of its duties as the  Collateral  Agent  hereunder and under any
other Document by or through employees,  agents, and attorneys-in-fact and shall
not be answerable to the Holders,  except as to money or securities  received by
it or its authorized agents, for the default or misconduct of any such agents or
attorneys-in-fact  selected by it with  reasonable  care. The  Collateral  Agent
shall be entitled to advice of counsel  concerning the  contractual  arrangement
between the Collateral  Agent and the Holders and all matters  pertaining to the
Collateral Agent's duties hereunder and under any other Document.

     11.7.  Reliance  on  Documents;  Counsel.  The  Collateral  Agent  shall be
entitled to rely upon any Note, notice, consent, certificate, affidavit, letter,
telegram,  statement, paper or document believed by it to be genuine and correct
and to have been signed or sent by the proper person or persons, and, in respect
to legal matters,  upon the opinion of counsel selected by the Collateral Agent,
which counsel may be employees of the Collateral Agent.

     11.8.  COLLATERAL AGENT'S  REIMBURSEMENT AND  INDEMNIFICATION.  EACH HOLDER
AGREES TO REIMBURSE AND INDEMNIFY THE COLLATERAL  AGENT RATABLY IN PROPORTION TO
THE RATIO  THAT ITS  RESPECTIVE  NOTE BEARS TO THE  AGGREGATE  NOTES (I) FOR ANY
AMOUNTS NOT REIMBURSED BY THE COMPANY FOR WHICH THE COLLATERAL AGENT IS ENTITLED
TO REIMBURSEMENT BY THE COMPANY UNDER THE DOCUMENTS, (II) FOR ANY OTHER EXPENSES
INCURRED BY THE COLLATERAL  AGENT ON BEHALF OF THE HOLDERS,  IN CONNECTION  WITH
THE  PREPARATION,  EXECUTION,  DELIVERY,  ADMINISTRATION  AND ENFORCEMENT OF THE
DOCUMENTS  (INCLUDING,  WITHOUT  LIMITATION,  FOR ANY  EXPENSES  INCURRED BY THE
COLLATERAL AGENT IN CONNECTION WITH ANY DISPUTE BETWEEN THE COLLATERAL AGENT AND
ANY HOLDER OR BETWEEN TWO OR MORE OF THE HOLDERS) AND (III) FOR ANY LIABILITIES,
OBLIGATIONS,  LOSSES,  DAMAGES,  PENALTIES,  ACTIONS,  JUDGMENTS,  SUITS, COSTS,
EXPENSES OR DISBURSEMENTS OF ANY KIND AND NATURE WHATSOEVER WHICH MAY BE IMPOSED
ON, INCURRED BY OR ASSERTED  AGAINST THE COLLATERAL AGENT IN ANY WAY RELATING TO
OR ARISING OUT OF THE  DOCUMENTS OR ANY OTHER  DOCUMENT  DELIVERED IN CONNECTION
THEREWITH  OR  THE  TRANSACTIONS   CONTEMPLATED   THEREBY  (INCLUDING,   WITHOUT
LIMITATION,  FOR ANY SUCH AMOUNTS INCURRED BY OR ASSERTED AGAINST THE COLLATERAL
AGENT IN CONNECTION WITH ANY DISPUTE BETWEEN THE COLLATERAL AGENT AND ANY HOLDER
OR BETWEEN TWO OR MORE OF THE HOLDERS),  OR THE  ENFORCEMENT OF ANY OF THE TERMS
OF THE DOCUMENTS OR OF ANY SUCH OTHER  DOCUMENTS,  PROVIDED THAT NO HOLDER SHALL
BE LIABLE FOR ANY OF THE  FOREGOING TO THE EXTENT ANY OF THE  FOREGOING IS FOUND
IN A FINAL NON-APPEALABLE  JUDGMENT BY A COURT OF COMPETENT JURISDICTION TO HAVE
RESULTED  FROM THE GROSS  NEGLIGENCE  OR WILLFUL  MISCONDUCT  OF THE  COLLATERAL
AGENT.  THE  OBLIGATIONS  OF THE HOLDERS  UNDER THIS SECTION 11.8 SHALL  SURVIVE
PAYMENT OF THE OBLIGATIONS AND TERMINATION OF THIS AGREEMENT.

                                       65


     11.9.  Notice of Default.  The Collateral Agent shall not be deemed to have
knowledge  or  notice  of the  occurrence  of any  Default  or Event of  Default
hereunder  unless the Collateral Agent has received written notice from a Holder
or the Company  referring to this Agreement  describing such Default or Event of
Default and stating that such notice is a "notice of default". In the event that
the  Collateral  Agent receives such a notice,  the Collateral  Agent shall give
prompt notice thereof to the Holders.

     11.10.  Rights as a Holder.  In the event the Collateral Agent is a Holder,
the Collateral  Agent shall have the same rights and powers  hereunder and under
any other  Document with respect to its  Indebtedness  evidenced by the Notes as
any Holder and may exercise the same as though it were not the Collateral Agent,
and the term "Holder" or "Holders"  shall, at any time when the Collateral Agent
is a Holder,  unless the context  otherwise  indicates,  include the  Collateral
Agent in its individual  capacity.  The Collateral  Agent and its Affiliates may
accept deposits from, lend money to, and generally  engage in any kind of trust,
debt,  equity or other  transaction,  in addition to those  contemplated by this
Agreement or any other  Document,  with the Company,  the  Guarantors  or any of
their  respective  Subsidiaries  in which the  Company,  such  Guarantor or such
Subsidiary is not  restricted  hereby from  engaging with any other Person.  The
Collateral  Agent,  in its  individual  capacity,  is not  obligated to remain a
Holder.

     11.11. Holder Decision. Each Holder acknowledges that it has, independently
and without  reliance upon the Collateral Agent or any other Holder and based on
the financial  statements  prepared by the Company and the  Guarantors  and such
other  documents  and  information  as it has deemed  appropriate,  made its own
analysis and decision to enter into this Agreement and the other Documents. Each
Holder also acknowledges  that it will,  independently and without reliance upon
the  Collateral  Agent or any  other  Holder  and  based on such  documents  and
information as it shall deem  appropriate at the time,  continue to make its own
decisions  in taking or not taking  action  under this  Agreement  and the other
Documents.

     11.12.  Successor  Collateral Agent. The Collateral Agent may resign at any
time by giving  written  notice  thereof to the  Holders and the  Company,  such
resignation to be effective upon the appointment of a successor Collateral Agent
or, if no successor  Collateral Agent has been appointed,  forty-five days after
the  retiring  Collateral  Agent gives notice of its  intention  to resign.  The
Collateral  Agent may be removed  at any time with or  without  cause by written
notice received by the Collateral Agent from the Majority Holders,  such removal
to be effective on the date  specified  by the Majority  Holders.  Upon any such
resignation or removal, the Majority Holders shall have the right to appoint, on
behalf of the Company and the Holders,  a successor  Collateral Agent subject to
the approval of the Company,  such  approval  not to be  unreasonably  withheld;
provided  that  Company  shall  not have  the  right to  approve  any  successor
Collateral Agent appointed during the continuance of any Event of Default. If no
successor  Collateral Agent shall have been so appointed by the Majority Holders
within thirty days after the resigning  Collateral  Agent's giving notice of its
intention to resign, then the resigning  Collateral Agent may appoint, on behalf
of the Company and the Holders,  a successor  Collateral Agent.  Notwithstanding
the previous sentence,  the Collateral Agent may at any time without the consent
of the  Company  or  any  Holder,  appoint  any of  its  Affiliates  which  is a
commercial bank as a successor  Collateral  Agent  hereunder.  If the Collateral
Agent has resigned or been removed and no  successor  Collateral  Agent has been
appointed,  the Holders may perform all the duties of


                                       66


Collateral Agent hereunder and the Company shall make all payments in respect of
the Indebtedness to the applicable  Holder and for all other purposes shall deal
directly with the Holders.  No successor  Collateral Agent shall be deemed to be
appointed  hereunder  until such  successor  Collateral  Agent has  accepted the
appointment.   Any  such  successor   Collateral  Agent  shall  be  a  financial
institution  or  Fund  having   capital  and  retained   earnings  of  at  least
$100,000,000.  Upon the acceptance of any  appointment  as the Collateral  Agent
hereunder by a successor Collateral Agent, such successor Collateral Agent shall
thereupon succeed to and become vested with all the rights,  powers,  privileges
and duties of the resigning or removed  Collateral Agent. Upon the effectiveness
of the resignation or removal of the Collateral  Agent, the resigning or removed
Collateral  Agent shall be discharged from its duties and obligations  hereunder
and under the Documents.  After the  effectiveness of the resignation or removal
of a Collateral  Agent,  the  provisions  of this  Article XI shall  continue in
effect for the benefit of such Collateral  Agent in respect of any actions taken
or  omitted  to be  taken  by it while it was  acting  as the  Collateral  Agent
hereunder and under the other Documents.

     11.13. Delegation to Affiliates. The Company and the Holders agree that the
Collateral  Agent may delegate any of its duties under this  Agreement to any of
its Affiliates.  Any such Affiliate (and such Affiliate's  directors,  officers,
agents and employees)  which performs  duties in connection  with this Agreement
shall be entitled to the same benefits of the indemnification,  waiver and other
protective provisions to which the Collateral Agent is entitled under Articles X
and XI.

     11.14.  Execution of Security  Documents.  The Holders  hereby  empower and
authorize  the  Collateral  Agent to execute  and  deliver to the Company on its
behalf the Security  Documents  (including the Subordination  Agreement) and all
related financing statements and any financing statements, agreements, documents
or  instruments  as shall be necessary or  appropriate to effect the purposes of
the Security Documents.

     11.15.  Collateral  Releases.  The Holders hereby empower and authorize the
Collateral  Agent to  execute  and  deliver to the  Restricted  Persons on their
behalf  any  agreements,  documents  or  instruments  as shall be  necessary  or
appropriate to effect any releases of Collateral which shall be permitted by the
terms hereof or of any other Document,  including  releases required pursuant to
sales of  Collateral  that are not  prohibited  under  Section 7.2,  which shall
otherwise have been approved by the Majority  Holders in writing or as otherwise
required  by  the  Subordination  Agreement.  Notwithstanding  anything  to  the
contrary  herein,  in the event any portion of the  Indebtedness is satisfied by
the issuance of Registrable Securities,  except for sales of Collateral that are
not prohibited under Section 7.2,  releases  approved by the Majority Holders in
writing or as otherwise  required by the  Subordination  Agreement,  none of the
Collateral  shall be released  until the  repurchase  obligations of the Company
under the  Registration  Rights Agreement have terminated in accordance with its
terms.

                                       67


                                  ARTICLE XII

                            SETOFF; RATABLE PAYMENTS
                            ------------------------

     12.1.  Setoff. In addition to, and without limitation of, any rights of the
Holders  under  applicable  law, if any  Restricted  Person  becomes  insolvent,
however  evidenced,  or any  Event  of  Default  occurs,  any and  all  deposits
(including all account balances, whether provisional or final and whether or not
collected or  available)  and any other  Obligation at any time held or owing by
any Holder or any Affiliate of any Holder (with the exception of funds deposited
in the  Company's  accounts  in trust for third  parties or funds  deposited  in
pension accounts,  IRA's,  Keogh accounts and All Savor  Certificates) to or for
the credit or account of any Restricted  Person may be offset and applied toward
the payment of the Indebtedness then due and owing to such Holder.

     12.2. Ratable Payments. If any Holder, whether by setoff or otherwise,  has
payment  made to it upon its  Indebtedness  evidenced  by the Notes in a greater
proportion than that received by any other Holder, such Holder agrees,  promptly
upon  demand,  to  purchase a portion of the Notes held by the other  Holders so
that after such purchase each Holder will hold its ratable  proportion of Notes.
If any  Holder,  whether in  connection  with  setoff or amounts  which might be
subject to setoff or otherwise,  receives collateral or other protection for its
Indebtedness or such amounts which may be subject to setoff, such Holder agrees,
promptly upon demand, to take such action necessary such that all Holder s share
in the benefits of such collateral ratably in proportion to their Notes. In case
any such  payment is  disturbed  by legal  process,  or  otherwise,  appropriate
further adjustments shall be made.

                                  ARTICLE XIII

                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS
                  --------------------------------------------

     13.1.  Representations  and  Warranties of Each  Purchaser.  Each Purchaser
represents  and warrants to the Company,  severally  and not jointly,  as of the
date hereof and as of each date it  receives  Common  Stock  pursuant to Section
3.3(b), 3.5 or 3.6 as follows:

          (a) Purchase for its Own Account.  Such  Purchaser is  purchasing  the
     Restricted  Securities  for  its  own  account,   without  a  view  to  the
     distribution  thereof in  violation  of the  Securities  Act,  all  without
     prejudice,  however,  to the  right  of  such  Purchaser  at any  time,  in
     accordance  with  this  Agreement  or the  Documents,  lawfully  to sell or
     otherwise to dispose of all or any part of the Restricted  Securities  held
     by it.

          (b) Accredited  Investor.  Such Purchaser is an "accredited  investor"
     within the meaning of Regulation D under the Securities Act.

          (c)  Authority,  Etc.  Such  Purchaser  has the power and authority to
     enter into and perform this  Agreement and the  execution  and  performance
     hereof have been duly authorized by all proper and necessary  action;  this
     Agreement  constitutes  the valid and legally  binding  obligation  of such
     Purchaser,  enforceable  against it in accordance with


                                       68


     its terms,  except as limited by  bankruptcy,  insolvency  or other similar
     laws now or hereafter in effect  affecting  the  enforcement  of creditors'
     rights and the application of equitable principles.

          (d) Securities Act Compliance.  Such Purchaser understands that, as of
     the Closing Date,  the Company has not registered the offer and sale of the
     Restricted  Securities  under the Securities Act, and each Purchaser agrees
     that the  Restricted  Securities  may not be sold or transferred or offered
     for sale or transfer by it without registration under the Securities Act or
     the availability of an exemption  therefrom,  all as more fully provided in
     Article XV hereof.  Such Purchaser  understands  that any transfer agent of
     the Company will be issued  stop-transfer  restrictions with respect to the
     Restricted Securities unless such transfer is subsequently registered under
     the Securities Act and applicable state and other securities laws or unless
     an exemption  from such  registration  is  available.  Such  Purchaser  has
     experience in analyzing  and  investing in entities like the Company,  such
     Purchaser can bear the economic risk of its investment,  including the full
     loss  of  its  investment,  and by  reason  of its  business  or  financial
     experience  or the business or  financial  experience  of its  professional
     advisors  has  the  capacity  to  evaluate  the  merits  and  risks  of its
     investment and protect its own interest in connection  with the purchase of
     the  Restricted  Securities  from the  Company on the  Closing  Date.  Such
     Purchaser   does  not  have  any   contract,   undertaking,   agreement  or
     arrangements with any Person to sell,  transfer or grant a participation to
     such Person or to any third Person,  with respect to any of the  Restricted
     Securities in violation of the Federal or any state securities laws.

                                  ARTICLE XIV

                             SUBORDINATION OF NOTES
                             ----------------------

     14.1.  Subordination of Notes. The Company,  for itself and its successors,
and each Holder, by its acceptance of the Notes,  agrees that (a) the payment of
the principal of and interest on the Notes and (b) any payment on account of the
acquisition  or redemption of the Notes by the Company is  subordinated,  to the
extent and in the manner provided in the Subordination Agreement and each Holder
shall be bound by the provisions thereof.

                                   ARTICLE XV

                             TRANSFER OF SECURITIES
                             ----------------------

     15.1. Restriction on Transfer.

     The  Restricted  Securities  shall not be  transferable  except a holder of
Restricted   Securities  may  transfer  such  Restricted   Securities  upon  the
conditions specified in this Article XV, which conditions are intended to ensure
compliance  with the provisions of the Securities Act in respect of the transfer
thereof; provided, however, that any transferee, by acceptance of the Restricted
Securities,  will be deemed to have  agreed to be bound by and  entitled  to the
benefits of Section 16.15; and provided,  further,  that, so long as no Event of
Default has occurred and is  continuing,


                                       69


neither the rights of any Holder under the  Documents nor the Notes nor any part
thereof or participation therein may be transferred or assigned to a Competitor,
and the Notes may not be transferred or assigned in aggregate  principal amounts
of less  than  $3,000,000.  By its  acceptance  of a Note,  each  transferee  of
Restricted Securities hereunder and will be deemed to have agreed to be bound by
the  provisions  of this  Article  including  the  representations  set forth in
Section 13.1(a) and (d) of this Agreement.

     15.2. Restrictive Legends.

     Each  certificate for the Restricted  Securities,  and each certificate for
any such  securities  issued to subsequent  transferees of any such  certificate
shall (unless  otherwise  permitted by the provisions of Section 15.3 hereof) be
stamped or otherwise  imprinted  with a legend in  substantially  the  following
form:

          "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
          INVESTMENT  AND HAVE NOT BEEN  REGISTERED  UNDER THE SECURITIES ACT OF
          1933 OR ANY STATE  SECURITIES OR BLUE SKY LAWS.  THESE  SECURITIES MAY
          NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF SUCH  REGISTRATION  OR AN
          EXEMPTION  THEREFROM UNDER SAID ACT OR APPLICABLE  STATE SECURITIES OR
          BLUE SKY LAWS.  ADDITIONALLY,  THE  TRANSFER  OF THESE  SECURITIES  IS
          SUBJECT TO THE  CONDITIONS  SPECIFIED IN THE NOTE  PURCHASE  AGREEMENT
          DATED AS OF OCTOBER  29,  2004,  AMONG THE ISSUER  HEREOF AND  CERTAIN
          OTHER SIGNATORIES  THERETO,  AND NO TRANSFER OF THESE SECURITIES SHALL
          BE VALID OR EFFECTIVE UNTIL SUCH CONDITIONS HAVE BEEN FULFILLED.  UPON
          THE FULFILLMENT OF CERTAIN OF SUCH  CONDITIONS,  THE ISSUER HEREOF HAS
          AGREED TO DELIVER TO THE HOLDER HEREOF A NEW CERTIFICATE,  NOT BEARING
          THIS LEGEND,  FOR THE SECURITIES  REPRESENTED HEREBY REGISTERED IN THE
          NAME OF THE HOLDER HEREOF. COPIES OF SUCH AGREEMENT MAY BE OBTAINED AT
          NO  COST BY  WRITTEN  REQUEST  MADE BY THE  HOLDER  OF  RECORD  OF THE
          CERTIFICATE  TO THE  SECRETARY  OF THE  ISSUER  HEREOF.  THIS  NOTE IS
          SUBJECT TO THE PROVISIONS OF THE SUBORDINATION AGREEMENT,  DATED AS OF
          OCTOBER 29,  2004,  AMONG PCRL  INVESTMENTS  L.P.,  IN ITS CAPACITY AS
          PURCHASER  AND AS  COLLATERAL  AGENT FOR THE  HOLDERS  PURSUANT TO THE
          PURCHASE  AGREEMENT,  HIBERNIA  NATIONAL  BANK,  IN  ITS  CAPACITY  AS
          ADMINISTRATIVE  AGENT  FOR THE  FINANCIAL  INSTITUTIONS  PARTY  TO THE
          SENIOR CREDIT  AGREEMENT (AS DEFINED IN THE  SUBORDINATION  AGREEMENT)
          AND COMPANY.  EACH HOLDER OF THIS PROMISSORY NOTE SHALL BE DEEMED,  BY
          VIRTUE OF SUCH HOLDER'S  ACQUISITION OF THIS PROMISSORY  NOTE, TO HAVE
          AGREED  TO  PERFORM  AND  OBSERVE  ALL OF THE  TERMS,  COVENANTS,  AND
          CONDITIONS  TO BE  PERFORMED  OR OBSERVED BY THE  SUBORDINATED  LENDER
          UNDER (AND AS DEFINED


                                       70


          IN) THE SUBORDINATION AGREEMENT.

     15.3. Notice of Transfer.

          (a) Except as  provided in the  Registration  Rights  Agreement,  each
     holder shall, prior to any Transfer of any Restricted Securities,  give ten
     (10) Business Days prior written  notice (or, if such ten (10) Business Day
     notice period is not reasonably  practicable,  such notice as is reasonably
     practicable),  to the  Company of such  holder's  intention  to effect such
     Transfer and to comply in all other  respects  with the  provisions of this
     Section  15.3 in making such  proposed  Transfer.  Each such  notice  shall
     describe  the manner  and  circumstances  of the  proposed  Transfer.  Upon
     request by the Company,  the holder  delivering such notice shall deliver a
     written  opinion,  addressed  to the  Company,  of counsel  for such holder
     (which may be one of its internal counsels), stating that in the opinion of
     such counsel (which opinion must be reasonably satisfactory to the Company)
     such  proposed   Transfer   does  not  involve  a   transaction   requiring
     registration of the offer and sale of such Restricted  Securities under the
     Securities  Act.  Such holder  shall  thereupon be entitled to Transfer the
     Restricted  Securities in accordance with the terms of the notice delivered
     to the Company,  if the Company does not reasonably object to such Transfer
     and request such  opinion,  within five days after  delivery of such notice
     or, if the Company  does request such  opinion,  upon its receipt  thereof.
     Notwithstanding  anything  to the  contrary  in any  Document,  the opinion
     required  hereby must be presented in order that the  securities be validly
     presented for transfer and that the Company's obligation to transfer begins
     to accrue and the Company  shall have no  obligation  to transfer nor shall
     any  liability  nor  penalty  accrue for  failure to  transfer  unless such
     opinion is presented.  Each certificate or other instrument  evidencing the
     securities issued upon the Transfer of any Restricted  Securities (and each
     certificate or other  instrument  evidencing any  untransferred  balance of
     such Restricted Securities) shall bear the legend set forth in Section 15.2
     above unless (i) such opinion of counsel is to the effect that registration
     of any future Transfer is not required by the applicable  provisions of the
     Securities  Act or (ii) the Company  shall have waived the  requirement  of
     such legend.

          (b) Notwithstanding the foregoing provisions of this Section 15.3, the
     restrictions  imposed by Section  15.3(a) upon the  transferability  of any
     Restricted  Securities  (other  than  the  Notes  in  respect  as to  which
     Restricted  Securities  may be  issued  by the  Company)  shall  cease  and
     terminate  when  (i)  such  Restricted  Securities  are  sold or  otherwise
     disposed of  pursuant  to an  effective  registration  statement  under the
     Securities  Act or as otherwise  contemplated  by paragraph  (a) above in a
     manner that does not require that the Restricted  Securities so transferred
     to continue to bear the legend set forth in Section  15.2 above or (ii) the
     holder of such Restricted  Securities has met the requirements for Transfer
     of such Restricted  Securities under Rule 144 or Rule 144(k).  Whenever the
     restrictions  imposed by this  Section  shall  terminate,  upon the written
     request  of the  holder  of any  Restricted  Securities  as to  which  such
     restrictions  have terminated,  as promptly as practicable but in any event
     within  ten (10)  Business  Days of receipt of such  request,  the  Company
     shall,  without  charge,  issue,  register and deliver a new instrument not
     bearing  the  restrictive  legend set forth in  Section  15.3


                                       71


     above and not containing any other reference to the restrictions imposed by
     this Section unless such Restricted  Securities are Registrable  Securities
     under the  Registration  Rights  Agreement in which event the Company shall
     comply with Section 7 of the Registration  Rights Agreement with respect to
     such Restricted Securities.

                                  ARTICLE XVI

                                  MISCELLANEOUS
                                  -------------

     16.1. Notices.

     All notices,  demands and requests of any kind to be delivered to any party
hereto in connection with this Agreement shall be (a) delivered personally,  (b)
sent by  nationally-recognized  overnight  courier,  (c)  sent by  first  class,
registered or certified mail, return receipt requested or (d) sent by facsimile,
in each case to such party at its address as follows:

                    (i) if to the Company, to:


                        Carrizo Oil & Gas, Inc.
                        14701 St. Mary's Lane, Suite 800
                        Houston, Texas  77079
                        Attention:  Chief Financial Officer
                        Telephone No.:  (281) 496-1352
                        Telecopier No.:  (281) 496-1251

                        with a copy to:

                        Baker Botts, L.L.P.
                        One Shell Plaza
                        910 Louisiana
                        Houston, Texas  77002-4915
                        Attention:  Gene Oshman, Esq.
                        Telephone No.:  (713) 229-1178
                        Telecopier No.:  (713) 229-1522

                    (ii) if to any Purchaser,  to such  Purchaser's  address set
               forth in Schedule 2 hereto.

                    (iii)  if  to  any  Holder,  to  such  Holder's  address  as
               specified by such Holder in accordance with this Section 16.1

     Any notice,  demand or request so delivered shall  constitute  valid notice
under this Agreement and shall be deemed to have been received (A) on the day of
actual delivery in the case of personal  delivery,  (B) on the next Business Day
after  the date  when  sent in the  case of  delivery  by  nationally-recognized
overnight  courier,  (C) on the fifth  Business Day after the date


                                       72


of  deposit in the U.S.  mail in the case of mailing or (D) upon  receipt in the
case of a facsimile  transmission  or the next Business Day is such day is not a
Business  Day. Any party hereto or any Holder may from time to time by notice in
writing served upon the other as aforesaid designate a different mailing address
or a different person to which all such notices,  demands or requests thereafter
are to be addressed.

     16.2. Survival of Agreement.

     All agreements,  representations and warranties contained herein or made in
writing  by or on behalf of the  Company  in  connection  with the  transactions
contemplated  hereby shall survive the execution and delivery of this  Agreement
and  the  other   Documents   without  limit.  No  termination  or  cancellation
(regardless of cause or procedure) of this Agreement  shall in any way affect or
impair the powers,  obligations,  duties,  rights and liabilities of the parties
hereto in any way with respect to any  transaction or event  occurring  prior to
such termination or  cancellation,  or any of the  representations  contained in
this Agreement and the other  Documents and all such  undertakings,  agreements,
covenants,  warranties  and  representations  shall survive such  termination or
cancellation  as provided  above.  The Company further agrees that to the extent
the Company makes a payment or payments to the Holders  under this  Agreement or
any  other  Document,  which  payment  or  payments  or  any  part  thereof  are
subsequently invalidated,  declared to be fraudulent or preferential,  set aside
or  required  to be repaid to a trustee,  receiver  or any other party under any
bankruptcy, insolvency or similar state or United States federal law, common law
or equitable  cause,  then to the fullest extent permitted by applicable law, to
the extent of such  payment  or  repayment,  the  Indebtedness  or part  thereof
intended to be satisfied shall be revived and continued in full force and effect
as if such payment had not been  received by the Holders.  The Holders  shall be
entitled  to  rely  upon,   and  shall  be  deemed  to  have  relied  upon,  all
representations,  warranties and covenants to be performed  prior to the Closing
Date contained in any Document,  notwithstanding any knowledge of the Holders to
the  contrary,  or any  contrary  information  delivered  to the  Holders by the
Company or any other Person.

     16.3. Successors and Assigns.

     Whenever in this  Agreement any of the parties  hereto is referred to, such
reference  shall be deemed to include the  successors  and permitted  assigns of
such party,  and all  covenants,  promises and agreements by or on behalf of the
Company or the Holders that are contained in the Documents  shall bind and inure
to the benefit of their respective  successors and permitted assigns except that
the Company  shall not assign its rights or  obligations  hereunder  without the
consent of the Majority  Holders.  Each Holder shall have the right,  subject to
the provisions of Article XV hereof, to assign or otherwise  transfer its rights
under this Agreement (in connection with the transfer of Restricted  Securities)
or any Notes held by it.

     16.4. Expenses of the Holders.

     Subject to a limitation of $75,000 upon attorney's fees and expenses of the
Purchaser  incurred in connection with the following clauses (i) and (ii) agreed
to  between  the  Company  and the  Purchaser,  the  Company  shall  pay (a) all
out-of-pocket  expenses reasonably  incurred by the Holders (including,  without
limitation,  the reasonable fees,  charges and  disbursements of counsel


                                       73


for the Holders and any auditors, accountants, appraisers, consultants, advisors
and agents  employed  or retained by the  Holders)  in  connection  with (i) the
preparation,  execution and delivery of this Agreement and the other  Documents,
(ii) the purchase of the Initial  Notes  hereunder  (including  the Holders' due
diligence investigation in connection therewith),  (iii) all filings, if any, by
any  Holder  required  to be made  by the  Commission  in  connection  with  the
transactions  contemplated  by the  Documents  and (iv) the  preparation  of any
modifications,   amendments,   consents  or  waivers  in  connection   with  the
negotiation,  preparation, execution and administration of the Documents and any
consents,  amendments,  waivers  or other  modifications  thereto  and any other
documents  or  matters  requested  by  Company;  (b) all the  actual  costs  and
reasonable  expenses of creating  and  perfecting  Liens in favor of  Collateral
Agent,  for the  benefit  of  Holders  pursuant  hereto,  including  filing  and
recording fees,  expenses and taxes,  stamp or documentary  taxes,  search fees,
title insurance  premiums and reasonable  fees,  expenses and  disbursements  of
counsel to  Collateral  Agent and of counsel  providing  any  opinions  that the
Collateral  Agent or any Holder may request in respect of the  Collateral or the
Liens created pursuant to the Security  Documents;  (c) all the actual costs and
reasonable  fees,  expenses and  disbursements  of any auditors,  consultants or
appraisers;  (d) all the actual costs and  reasonable  expenses  (including  the
reasonable  fees,  expenses and  disbursements  of any appraisers,  consultants,
advisors and agents employed or retained by Collateral Agent and its counsel) in
connection with the custody or  preservation  of any of the Collateral;  and (e)
after  the  occurrence  of a  Default  or an Event of  Default,  all  costs  and
expenses, including reasonable attorneys' fees and costs of settlement, incurred
by the Collateral  Agent and the Holders in enforcing any  Indebtedness of or in
collecting  any payments due from any Restricted  Person  hereunder or under the
other  Documents  by reason of such  Default or Event of Default  (including  in
connection with the sale of,  collection from, or other  realization upon any of
the  Collateral or the  enforcement  of the Guaranty) or in connection  with any
refinancing or restructuring of the credit  arrangements  provided  hereunder in
the nature of a "work out" or pursuant to any insolvency or bankruptcy  cases or
proceedings.

     16.5. Indemnification.

          (a) In addition to all rights and remedies available to the Holders at
     law or in  equity,  the  Company  shall  indemnify  the  Holders  and their
     affiliates,    stockholders,   officer,   directors,   employees,   agents,
     representatives,  counsel,  successors and permitted assigns (collectively,
     the "Indemnified  Persons") and save and hold each of them harmless against
     and pay on behalf of or reimburse  such party as and when  incurred for any
     loss  (excluding  any  tax and  any  diminution  in  value  of the  Notes),
     liability,   demand,   claim,   action,  cause  of  action,  cost,  damage,
     deficiency,  penalty,  fine or  expense,  whether or not arising out of any
     claims  by or on  behalf  of the  Company  or any  third  party,  including
     interest,  penalties,  reasonable  attorneys'  fees  and  expenses  and all
     amounts  paid  in  investigation,  defense  or  settlement  of  any  of the
     foregoing (collectively, "Losses") which any such party may suffer, sustain
     or become subject to, to the extent arising out of or as a result of:

               (i)  any  misrepresentation  or  breach  of a  representation  or
          warranty on the part of the Company under Article V of this Agreement;

                                       74


               (ii) any nonfulfillment or breach of any covenant or agreement on
          the part of the Company under this Agreement or any other Document;

               (iii) any action, demand,  proceeding,  investigation or claim by
          any third party (including, without limitation, governmental agencies)
          against any Indemnified Person that, if successful, would give rise to
          or  evidence  the  existence  of or  relate  to a breach of any of the
          representations, warranties or covenants of the Company; and

               (iv) any action,  demand,  proceeding,  investigation or claim by
          any third party (including, without limitation, governmental agencies)
          against  any   Indemnified   Person   relating  to  or  arising   from
          Environmental  Laws  (including  without  limitation  relating  to  or
          arising  from any  Hazardous  Material  regarding  the  Company or its
          Subsidiaries  and relating to the Company or its  Subsidiaries  or any
          predecessor  thereto or any of the operators,  properties or assets of
          any of them). THE COVENANTS AND INDEMNITIES  CONTAINED IN THIS SECTION
          16.5(a) SHALL SURVIVE THE TERMINATION OF THIS AGREEMENT, BUT EXCLUDING
          ALL  INDEMNITY  MATTERS  ARISING BY REASON OF THE GROSS  NEGLIGENCE OR
          WILLFUL  MISCONDUCT  ON  THE  PART  OF  ANY  INDEMNIFIED  PARTY;  AND,
          PROVIDED,  HOWEVER, NO RELEASE,  WAIVER, DEFENSE OR INDEMNITY SHALL BE
          AFFORDED UNDER THIS SECTION 16.5(a) IN RESPECT OF ANY PROPERTY FOR ANY
          OCCURRENCE  ARISING FROM THE ACTS OR OMISSIONS OF THE COLLATERAL AGENT
          AND/OR  THE  HOLDERS  OR THEIR  AGENTS OR  REPRESENTATIVES  DURING THE
          PERIOD  AFTER WHICH SUCH PERSON,  ITS  SUCCESSORS  OR ASSIGNS,  OR ITS
          AGENTS OR REPRESENTATIVES, SHALL HAVE OBTAINED OWNERSHIP, OPERATION OR
          POSSESSION OF SUCH PROPERTY (WHETHER BY FORECLOSURE OR DEED IN LIEU OF
          FORECLOSURE,  AS  MORTGAGEE-IN-POSSESSION  OR  OTHERWISE).  ANY CLAIMS
          UNDER THIS SECTION 16.5(a) SHALL BE SUBJECT TO SECTION 16.5(b).

          (b) Notwithstanding  the foregoing,  and subject to the following part
     of this sentence, upon judicial determination, which is final and no longer
     appealable,  that the act or omission  giving  rise to the  indemnification
     hereinabove  provided resulted primarily out of or was based primarily upon
     the  Indemnified  Person's gross  negligence,  fraud or willful  misconduct
     (unless  such action was based upon the  Indemnified  Person's  reliance in
     good  faith  upon  any of the  representations,  warranties,  covenants  or
     promises made by the Company in the Documents) by the  Indemnified  Person,
     the  Company  shall  not  be  responsible  for  any  Losses  sought  to  be
     indemnified in connection  therewith,  and the Company shall be entitled to
     recover from the Indemnified  Person all amounts previously paid in full or
     partial satisfaction of such indemnity with interest thereon at the rate of
     interest  borne by the Notes,  together  with all costs and expenses of the
     Company reasonably incurred in effecting such recovery, if any.

                                       75


          (c) All  indemnification  rights hereunder shall survive the execution
     and delivery of this  Agreement and the  consummation  of the  transactions
     contemplated hereby without limit, regardless of any investigation, inquiry
     or  examination  made for or on behalf of, or any  knowledge of the Holders
     and/or any of the  Indemnified  Persons or the acceptance by the Holders of
     any certificate or opinion.

          (d) The indemnity obligations that the Company have under this Section
     16.5 shall be in addition to any  liability  that the Company may otherwise
     have. The Company  further agrees that the  indemnification  commitment set
     forth in this Agreement shall apply whether or not the  Indemnified  Person
     is a formal party to any such lawsuits, claims or other proceedings.

          (e) Any indemnification of the Holders or any other Indemnified Person
     by the  Company  pursuant  to this  Section  16.5 shall be effected by wire
     transfer  of  immediately  available  funds from the  Company to an account
     designated by the Holders or any other  Indemnified  Person within  fifteen
     (15) days after the determination thereof.

     16.6. Third Party Claims.

          (a) If any  claim (a "Third  Party  Claim")  is  asserted  against  an
     Indemnified   Person   and  such   Indemnified   Person   intends  to  seek
     indemnification  hereunder  from the Company (the  "Indemnifying  Person"),
     then such Indemnified  Person shall give notice of the Third Party Claim to
     the Indemnifying Person as soon as practicable after the Indemnified Person
     has  reason  to  believe  that  the   Indemnifying   Person  will  have  an
     indemnification obligation with respect to such Third Party Claim and shall
     provide the Indemnifying Person with all papers served with respect to such
     Third Party Claim. Such notice shall describe in reasonable  detail, to the
     extent  known,  the nature of the Third  Party  Claim,  an  estimate of the
     amount of damages  attributable  to the Third  Party Claim and the basis of
     the Indemnified Person's request for indemnification  under this Agreement.
     The failure of the Indemnified Person to so notify the Indemnifying  Person
     of the Third Party Claim shall not relieve the Indemnifying Person from any
     duty to indemnify  hereunder unless and to the extent that the Indemnifying
     Person  demonstrates that the failure of the Indemnified Person to promptly
     notify it of such Third Party Claim  prejudiced  its ability to defend such
     Third Party Claim; provided,  that the failure of the Indemnified Person to
     notify the Indemnifying  Person shall not relieve the  Indemnifying  Person
     from any liability  which it may have to the Indemnified  Person  otherwise
     than under this Agreement. Thereafter, the Indemnified Person shall deliver
     to the Indemnifying Person, within five business days after the Indemnified
     Person's  receipt thereof,  copies of all notices and documents  (including
     court  papers)  received by the  Indemnified  Person  relating to the Third
     Party Claim.

          (b) The Indemnifying Person shall have the right to participate in, or
     assume control of, and the Indemnifying  Person's  insurance  carrier shall
     have the right to  participate  in, the defense of the Third Party Claim at
     its own expense by giving prompt written notice to the Indemnified  Person,
     using  counsel  of its  choice  reasonably  acceptable  to the  Indemnified
     Person.  If it elects to assume  control of the defense of


                                       76


     such Third Party  Claim,  the  Indemnifying  Person shall defend such Third
     Party  Claim  by  promptly  and  vigorously   prosecuting  all  appropriate
     proceedings  to a final  conclusion  or  settlement.  After notice from the
     Indemnifying Person to the Indemnified Person of its election to assume the
     defense of such Third Party Claim,  the  Indemnified  Person shall have the
     right to  participate in the defense of the Third Party Claim using counsel
     of its  choice,  but the  Indemnifying  Person  shall  not be liable to the
     Indemnified  Person hereunder for any legal or other expenses  subsequently
     incurred by the Indemnified  Person in connection with its participation in
     the defense thereof unless (i) the employment thereof has been specifically
     authorized in writing by the  Indemnifying  Person,  (ii) the  Indemnifying
     Person fails to assume the defense or diligently  prosecute the Third Party
     Claim or (iii) there shall exist or develop a conflict that would ethically
     prohibit  counsel  to  the  Indemnifying   Person  from   representing  the
     Indemnified   Person.  If  requested  by  the  Indemnifying   Person,   the
     Indemnified Person agrees to cooperate with the Indemnifying Person and its
     counsel in contesting  any Third Party Claim that the  Indemnifying  Person
     elects to contest, including the making of any related counterclaim against
     the Third Party  asserting  the Third  Party  Claim or any  cross-complaint
     against  any  Person,  in each case only if and to the extent that any such
     counterclaim  or  cross-complaint  arises  from the same  actions  or facts
     giving rise to the Third Party Claim.  The  Indemnifying  Person shall have
     the right, acting in good faith and with due regard to the interests of the
     Indemnified  Person, to control all decisions regarding the handling of the
     defense without the consent of the Indemnified  Person,  but shall not have
     the right to admit  liability  with  respect to, or  compromise,  settle or
     discharge  any Third  Party  Claim or consent to the entry of any  judgment
     with  respect  to  such  Third  Party  Claim  without  the  consent  of the
     Indemnified  Person,  which  consent  shall not be  unreasonably  withheld,
     unless such  settlement,  compromise or consent  includes an  unconditional
     release  of the  Indemnified  Person  from all  liability  and  obligations
     arising  out of such  Third  Party  Claim  and which  would  not  otherwise
     adversely affect the Indemnified Person.

          (c) If the Indemnifying  Person fails to assume the defense of a Third
     Party Claim within thirty (30) days after receipt of written  notice of the
     Third Party  Claim,  then the  Indemnified  Person  shall have the right to
     defend the Third Party Claim by promptly  and  vigorously  prosecuting  all
     appropriate   proceedings  to  a  final   conclusion  or  settlement.   The
     Indemnifying  Person shall have the right to  participate in the defense of
     the Third  Party Claim using  counsel of its  choice,  but the  Indemnified
     Person shall not be liable to the  Indemnifying  Person  hereunder  for any
     legal or other expenses  incurred by the Indemnifying  Person in connection
     with  its  participation  in  the  defense  thereof.  If  requested  by the
     Indemnified  Person,  the Indemnifying  Person agrees to cooperate with the
     Indemnified Person and its counsel in contesting any Third Party Claim that
     the  Indemnified  Person  elects to  contest,  including  the making of any
     related  counterclaim  against  the Third Party  asserting  the Third Party
     Claim or any  cross-complaint  against any Person, in each case only if and
     to the extent that any such counterclaim or cross-complaint arises from the
     same actions or facts giving rise to the Third Party Claim. The Indemnified
     Person  shall have the  right,  acting in good faith and with due regard to
     the  interests  of  the  Indemnifying  Person,  to  control  all  decisions

                                       77


     regarding  the  handling  of  the  defense   without  the  consent  of  the
     Indemnifying  Person,  but shall not have the right to compromise or settle
     any Third Party Claim or consent to the entry of any judgment  with respect
     to such Third Party Claim without the consent of the  Indemnifying  Person,
     which consent shall not be unreasonably  withheld,  unless such settlement,
     compromise or consent includes an unconditional release of the Indemnifying
     Person from all liability and  obligations  arising out of such Third Party
     Claim.

     16.7. Governing Law.

          (a) THIS  AGREEMENT  SHALL BE GOVERNED BY AND  CONSTRUED IN ACCORDANCE
     WITH THE DOMESTIC  LAWS OF THE STATE OF NEW YORK WITHOUT  GIVING  EFFECT TO
     ANY CHOICE OR CONFLICT OF LAW  PROVISION  OR RULE  (WHETHER IN THE STATE OF
     NEW YORK OR ANY OTHER JURISDICTION) THAT WOULD CAUSE THE APPLICATION OF THE
     LAWS OF ANY JURISDICTION OTHER THAN THE STATE OF NEW YORK.

          (b) THE PARTIES TO THIS AGREEMENT AGREE THAT JURISDICTION AND VENUE IN
     ANY ACTION BROUGHT BY ANY PARTY HERETO PURSUANT TO THIS AGREEMENT SHALL LIE
     IN ANY  FEDERAL  OR  STATE  COURT  LOCATED  IN THE  STATE OF NEW  YORK.  BY
     EXECUTION AND DELIVERY OF THIS  AGREEMENT,  THE PARTIES HERETO  IRREVOCABLY
     SUBMIT TO THE NON-EXCLUSIVE  JURISDICTION OF SUCH COURTS FOR THEMSELVES AND
     IN RESPECT OF THEIR  PROPERTY  WITH  RESPECT TO SUCH  ACTION.  THE  PARTIES
     HERETO  IRREVOCABLY  AGREE THAT VENUE  WOULD BE PROPER IN SUCH  COURT,  AND
     HEREBY WAIVE ANY OBJECTION  THAT SUCH COURT IS AN IMPROPER OR  INCONVENIENT
     FORUM FOR THE RESOLUTION OF SUCH ACTION.

          (c) THE COMPANY  HEREBY AGREES THAT SERVICE UPON THEM BY REGISTERED OR
     CERTIFIED  MAIL (RETURN  RECEIPT  REQUESTED)  SHALL  CONSTITUTE  SUFFICIENT
     NOTICE. NOTHING HEREIN SHALL AFFECT THE RIGHT TO SERVE PROCESS IN ANY OTHER
     MANNER  PERMITTED  BY LAW OR SHALL  LIMIT THE RIGHT OF THE HOLDERS TO BRING
     PROCEEDINGS AGAINST THE COMPANY IN THE COURTS OF ANY OTHER JURISDICTION.

          (d) BECAUSE  DISPUTES  ARISING IN  CONNECTION  WITH COMPLEX  FINANCIAL
     TRANSACTIONS ARE MOST QUICKLY AND  ECONOMICALLY  RESOLVED BY AN EXPERIENCED
     AND EXPERT PERSON AND THE PARTIES WISH APPLICABLE STATE AND FEDERAL LAWS TO
     APPLY,  THE  PARTIES  DESIRE  THAT THEIR  DISPUTES  BE  RESOLVED BY A JUDGE
     APPLYING SUCH  APPLICABLE  LAWS.  THEREFORE,  THE PARTIES  HERETO WAIVE ALL
     RIGHT TO TRIAL BY JURY IN ANY ACTION, SUIT OR PROCEEDING BROUGHT TO ENFORCE
     OR DEFEND ANY RIGHTS OR REMEDIES UNDER


                                       78


     THIS AGREEMENT, THE DOCUMENTS OR ANY DOCUMENTS RELATED HERETO.

     16.8. Waivers; Amendments.

          (a) No failure  or delay of the  Holders  in  exercising  any power or
     right hereunder shall operate as a waiver thereof,  nor shall any single or
     partial  exercise  of any  such  right  or  power,  or any  abandonment  or
     discontinuance  of steps to  enforce  such a right or power,  preclude  any
     other or further  exercise  thereof or the  exercise  of any other right or
     power. The rights and remedies of the Holders  hereunder are cumulative and
     not exclusive of any rights or remedies which they would otherwise have. No
     waiver of any provision of this  Agreement or any other Document or consent
     to any departure by the Company  therefrom  shall in any event be effective
     unless the same shall be authorized as provided in paragraph (b) below, and
     then  such  waiver  or  consent  shall be  effective  only in the  specific
     instance  and for the purpose for which  given.  No notice or demand on the
     Company  in any case  shall  entitle  the  Company  to any other or further
     notice or demand in similar or other circumstances.

          (b) Neither this  Agreement  nor any  provision  hereof may be waived,
     amended or  modified  except  pursuant to an  agreement  or  agreements  in
     writing entered into by the Company and the Majority Holders; provided that
     no such amendment,  waiver or  modification  shall (i) reduce the principal
     amount of any Note or reduce  the rate of  interest  thereon,  without  the
     written  consent  of  each  Holder  affected  thereby,  (ii)  postpone  the
     scheduled  date of  payment  of the  principal  amount of any Note,  or any
     interest  thereon,  or reduce  the  amount  of,  waive or  excuse  any such
     payment, without the written consent of each Holder affected thereby, (iii)
     change Section 3.3 hereof in a manner that would alter the pro rata sharing
     of payments required  thereby,  without the written consent of each Holder,
     (iv) change any of the provisions of this Section 16.8 or the definition of
     "Majority  Holders" or any other provision hereof  specifying the number or
     percentage  of  Holders  required  to  waive,  amend or modify  any  rights
     hereunder or make any determination or grant any consent hereunder, without
     the written  consent of each Holder or (v) increase the  obligations of any
     Holder or otherwise  disproportionately  adversely affect any of the rights
     of any Holder  under this  Agreement,  without the written  consent of each
     Holder affected thereby.

     16.9. Independence of Covenants.  All covenants hereunder shall be given in
any jurisdiction  independent effect so that if a particular action or condition
is not permitted by any of such  covenants,  the fact that it would be permitted
by an exception to, or be otherwise  within the limitations of, another covenant
shall not avoid the  occurrence  of a  Default  or an Event of  Default  if such
action is taken or condition exists.

     16.10. No Fiduciary Relationship.  No provision in this Agreement or in any
of the other  Documents  and no course of dealing  between the parties  shall be
deemed to create any fiduciary duty by the Holders to the Company other than any
fiduciary duty any Holder may have as a member of the Board of the Company.

                                       79


     16.11.  No  Duty.  All  attorneys,   accountants,   appraisers,  and  other
professional  Persons and consultants  retained by the Purchasers shall have the
right to act  exclusively  in the interest of the  Purchasers  and shall have no
duty of disclosure,  duty of loyalty,  duty of care, or other duty or obligation
of any type or nature  whatsoever to the Company or any of it's  shareholders or
any other Person.

     16.12.  Construction.  The Company and the Purchasers acknowledge that each
of them has had the  benefit  of legal  counsel  of its own  choice and has been
afforded an opportunity  to review this  Agreement and the other  Documents with
its legal  counsel  and that this  Agreement  and the other  Documents  shall be
construed as if jointly drafted by the Purchasers and the Company.

     16.13.  Severability.  Whenever possible,  each provision of this Agreement
will be interpreted in such manner as to be effective and valid under Applicable
Law, but if any  provision of this  Agreement is held to be invalid,  illegal or
unenforceable in any respect under any Applicable Law in any jurisdiction,  such
invalidity,  illegality or unenforceability  will not affect any other provision
or any other  jurisdiction,  and such invalid,  void or otherwise  unenforceable
provisions  shall be null and void.  It is the intent of the  parties,  however,
that any invalid,  void or otherwise  unenforceable  provisions be automatically
replaced by other  provisions  which are as similar as possible in terms to such
invalid,  void  or  otherwise   unenforceable   provisions  but  are  valid  and
enforceable to the fullest extent permitted by Applicable Law.

     16.14.  Counterparts.  This  Agreement  may be  executed  in  two  or  more
counterparts,  each of which shall  constitute an original but all of which when
taken together shall constitute but one contract.

     16.15. Confidentiality.

          (a) For the purposes of this Section 16.15, "Confidential Information"
     means information delivered to any Holder by or on behalf of the Company or
     any  Subsidiary  in connection  with the  transactions  contemplated  by or
     otherwise  pursuant to this Agreement and the other  Documents  (including,
     without limitation, any information regarding the transactions contemplated
     hereby   provided  prior  to  the  Closing  Date)  that  is  identified  as
     confidential  or should  reasonably be known to be  confidential,  provided
     that such term does not include  information that (i) was publicly known or
     otherwise known to such Holder prior to the time of such  disclosure,  (ii)
     subsequently  becomes  publicly  known  through no act or  omission  by any
     Holder or any Person acting on its behalf, or (iii) otherwise becomes known
     to  any  Holder  other  than  through  disclosure  by  the  Company  or any
     Subsidiary.

          (b)  Subject  to Section  16.15(e),  each  Holder  will  maintain  the
     confidentiality  of  such  Confidential   Information  in  accordance  with
     procedures  adopted by such  Holder in good  faith to protect  confidential
     information of third parties  delivered to such Holder,  provided that such
     Holder may deliver or disclose  Confidential  Information  to the following
     Persons as to whom the Holder remains  responsible for their maintenance of
     confidentiality  to the extent  required  herein  (other  than the  Persons

                                       80


     described in clauses (iii), (vi) and (vii)),  (i) its directors,  officers,
     employees,  agents, attorneys and affiliates (to the extent such disclosure
     reasonably relates to the  administration of the investment  represented by
     the Notes), (ii) its financial advisors and other professional advisors who
     are made aware of the confidential  nature of such  information,  (iii) any
     other holder of Notes,  (iv) any eligible  Person to which any Holder sells
     or offers to sell Notes or any part  thereof or any  participation  therein
     (if  such  Person  has  agreed  in  writing  prior to its  receipt  of such
     Confidential  Information  to be bound by the  provisions  of this  Section
     16.15),  (v) any Person  from  which such  Holder  offers to  purchase  any
     security of the Company (if such Person has agreed in writing  prior to its
     receipt of such  Confidential  Information to be bound by the provisions of
     this Section 16.15), (vi) any federal or state regulatory  authority having
     jurisdiction over such Holder,  (vii) the National Association of Insurance
     Commissioners  or any similar  organization,  or any nationally  recognized
     rating  agency that requires  access to  information  about its  investment
     portfolio,  or (viii) any other Person to which such delivery or disclosure
     may be  necessary or  appropriate  (w) to effect  compliance  with any law,
     rule, regulation or order applicable to such Holder, (x) in response to any
     subpoena or other legal process,  (y) in connection  with any litigation to
     which such Holder is a party or (z) if an Event of Default has occurred and
     is  continuing,  to the extent such Holder may  reasonably  determine  such
     delivery and disclosure to be necessary or  appropriate in the  enforcement
     or for the  protection of the rights and remedies  under the Notes and this
     Agreement.

          (c) Each Holder,  by its  acceptance of Notes,  will be deemed to have
     agreed to be bound by and to be  entitled to the  benefits of this  Section
     16.15 as though it were a party to this Agreement. On reasonable request by
     the Company in  connection  with the delivery to any Holder of  information
     required to be delivered  to such Holder under this  Agreement or requested
     by such Holder  (other than a Holder that is a party to this  Agreement  or
     its  nominee)  such  Holder will enter into an  agreement  with the Company
     embodying the provisions of this Section 16.15.

          (d)  Notwithstanding  anything to the contrary  herein or in any other
     Document and unless  otherwise  requested by written  notice of a Holder to
     the  Company,   the  Company  shall  have  no  obligation  to  deliver  any
     Confidential Information to any Holder.

          (e) If at any time after the Closing Date:

               (i) any Confidential  Information not otherwise disclosed to such
          Holder  prior to the  Closing  Date that is  material  and  non-public
          regarding  the Company or any of its  Subsidiaries  is  delivered to a
          Holder by or on behalf of the Company or any  Subsidiary in connection
          with the  transactions  contemplated by or otherwise  pursuant to this
          Agreement prior to delivery of the written notice specified in Section
          16.15(d);

               (ii) at such time (A) such Holder,  together with its Affiliates,
          is  the   holder   of   Registrable   Securities   representing   five
          one-hundredths  of one  percent


                                       81


          (0.05%) or more of the outstanding Common Stock of the Company; or (B)
          the Issue Date related to any Significant  Stock Payment Notice issued
          to such Holder has not occurred; and

               (iii)  such  Holder  delivers   written  notice  to  the  Company
          indicating  that  an  Applicable   Period  has  begun  (a  "Disclosure
          Notice"),

          then  as of  the  end of the  Applicable  Period  set  forth  in  such
          Disclosure  Notice (or such  earlier  date as the  Company  shall have
          complied with clause (x) of this Section  16.15(e)(iii))  (unless such
          Confidential  Information  is no  longer  material,  or  is no  longer
          Confidential Information):

               (x) the Company shall be obligated to disclose such  Confidential
          Information in a manner  compliant with  Regulation FD of the Exchange
          Act and in  sufficient  detail  such  that  such  Holder  shall not be
          restricted  from trading the  securities of the Company under the U.S.
          or any state securities laws due to its knowledge of such Confidential
          Information;

               (y)  the  obligations  to  keep  such  Confidential   Information
          confidential  and not trade while in possession of such information of
          such Holder under Section 16.15(b) shall terminate; and

               (z) to the extent the Company shall not have complied with clause
          (x) of this Section  16.15(e)(iii)  prior to the end of the Applicable
          Period,  such Holder,  without  liability,  risk or  obligation to the
          Company or any of its Subsidiaries,  may (following  consultation with
          the  Company,  to the  extent  possible)  disclose  such  Confidential
          Information in a manner  compliant with  Regulation FD of the Exchange
          Act but  only in such  detail  such  that  such  Holder  shall  not be
          restricted  from trading the  securities of the Company under the U.S.
          or any state securities laws due to its knowledge of such Confidential
          Information.

               (f) For  purposes  of this  Section  16.15,  "Applicable  Period"
          means,  as of the date any Holder  receives  Confidential  Information
          prior to delivery of the written notice  specified in Section 16.15(d)
          with respect to such Confidential Information, the period specified in
          the table below opposite the percentage  ownership of the  outstanding
          shares of Common  Stock of the Company  represented  by the  aggregate
          number  of  Registrable  Securities  issued  to  such  Holder  and its
          Affiliates  during the period of thirty (30) consecutive  Trading Days
          immediately  preceding  but  excluding  such date  plus the  aggregate
          number of shares of  Registrable  Securities to be issued  pursuant to
          any Significant Stock Payment Notice then in effect:



                      ------------------------------------- ----------------------------------
                              Percentage Ownership                  Applicable Period
                      ------------------------------------- ----------------------------------
                      ------------------------------------- ----------------------------------
                                                                 
                        More than 0.05% but less than or        Twelve (12) Trading Days
                                 equal to .75%
                      ------------------------------------- ----------------------------------
                      ------------------------------------- ----------------------------------
                        More than .75% but less than or           Five (5) Trading Days
                                 equal to 1.5%
                      ------------------------------------- ----------------------------------

                                       82


                      ------------------------------------- ----------------------------------
                                 More than 1.5%                  Three (3) Trading Days
                      ------------------------------------- ----------------------------------


The Trading Days  included in any  Applicable  Period during which any Holder is
not  permitted  to  sell  Registrable   Securities  shall  be  included  in  the
determination  of whether an "Event" has occurred as such term is defined in and
to the extent provided by the  Registration  Rights  Agreement and to the extent
such Trading Days include  Trading Days that would  otherwise be included in any
Measurement  Period,  such Trading  Days shall be excluded for such  Measurement
Period as if such Trading Days were not Trading Days (it being  understood  that
such Measurement  Period shall be extended so that the Measurement Period is the
full applicable  period of Trading Days),  and the date for any payment relating
to such Measurement Period shall be extended for the number of days equal to the
Trading Days excluded from the Measurement Period.

     16.16.  Press Release.  The Company shall consult with Purchasers  prior to
issuing any press releases or otherwise making public statements with respect to
the transactions contemplated hereby, and shall not issue any such press release
or otherwise  make any such public  statement  without the prior  consent of the
Purchaser and its investment  advisor.  The Company shall not publicly  disclose
the name of the  Purchaser  or its  investment  advisor,  or include the name of
Purchaser  or its  investment  advisor in any filing  with the  Commission,  any
regulatory  agency, or trading market,  without the prior written consent of the
Purchaser and its investment advisor.

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

     16.18.  Entire  Agreement.  This Agreement and the agreements and documents
referred to herein contain the entire agreement of the parties and supersede any
and all prior  agreements  among the parties with respect to the subject  matter
hereof (including,  without limitation,  any term sheets or commitment letters).
Notwithstanding  the  foregoing,  nothing  herein shall prohibit the matters set
forth in, and actions of the Company and its  Subsidiaries  permitted by (i) the
Consent  Relating to the Amended and Restated Credit  Agreement dated as of June
20, 2003 by and among the  Company,  CCBM and the Senior  Lender as in effect on
the date hereof and (ii) the  Consent  dated as of June 7, 2004 by and among the
Company,  CCBM and the Senior Lender as in effect on the date hereof but subject
to the limitations contained in Section 7.5(c).

                            [Signature pages follow]




                                       83



         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.

                                    COMPANY:

                                    CARRIZO OIL & GAS, INC.


                                    By: /s/ PAUL F. BOLING
                                        -------------------
                                        Name: Paul F. Boling
                                        Title:   Vice President and
                                                 Chief Financial Officer

                                    14701 St. Mary's Lane, Suite 800
                                    Houston, Texas  77079
                                    Attention:  Paul F. Boling
                                    Telephone:  (281) 496-1352
                                    Facsimile:  (281) 496-1251


                                       84




                                    PCRL INVESTMENTS L.P.,
                                    as Collateral Agent and as a Purchaser


                                    By: /s/ WILLIAM E. ROSE
                                        --------------------
                                    Name: William E. Rose
                                    Title:   Authorized Signatory


                                    PCRL Investments L.P.
                                    c/o HBK Investments L.P.
                                    350 Park Avenue 19th Floor
                                    New York, New York  10022
                                    Attention:  Ken Hirsh
                                    Facsimile:  (212) 446-1941

                                    With a copy to:

                                    HBK Investments L.P.
                                    300 Crescent Court, Suite 700
                                    Dallas, Texas  75201
                                    Attention:  Legal Department
                                    Facsimile:  (214) 979-1207



                                       85


                                     ANNEX A

                         CALCULATION OF INVESTMENT BASE

JULY 1, 2004 INVESTMENT BASE ESTIMATE



                                                         Non-
                                            PDP       Conforming         BP           PUD           SI          TOTAL
                                                                                              
PV10 - Oil at $[ ] Bbl 1                      7,271              0         4,228        1,529             0
PV10 - Gas at $[ ] Mcf                       25,010              0        14,541        5,258             0
                                         --------------------------------------------------------------------------------
  Total PV10                               $ 32,281             $0      $ 18,769      $ 6,787            $0     $ 57,837
                                         --------------------------------------------------------------------------------


Total Reserves (exc Camp Hill) 2             32,282              0        18,768        6,786             0       57,836
Current Hedges                                1,508                                                                1,508
NEW Hedges                                    1,514                                                                1,514
                                         --------------------------------------------------------------------------------
  TOTAL PV10                                 35,304             $0      $ 18,768      $ 6,786            $0     $ 60,858
                                         --------------------------------------------------------------------------------


Initial Risking %                              100%            60%           75%          50%           75%
Risked Reserves                              35,304              0        14,076        3,393             0


Maximum Non-producing                                                Cap Non-producing at 1/3 of Total
                                                                     ---------------------------------
  Cap                                        35,304                       18,187                                  53,491
  Actual                                                                  17,469


Adj Risked Reserves                          35,304              0        14,076        3,393             0       52,773
  Additiona Risking %                           70%            70%           30%          30%           30%
Est. Borrowing Capacity                     $24,713             $0        $4,223       $1,018            $0      $29,954
Net Risking                                   70.0%          42.0%         22.5%        15.0%         22.5%




                                                                                INTERNAL SUMMARY-
                                                                                                            
                                                                                7.1.04 (above)                    29,954
                                                                                July Amortization (est)            2,015
                                                                                8.1.04 Internal Est.              27,939

                                                                                INVESTMENT BASE-
                                                                                8.1.04                            28,000


1 The prices for Oil and Gas shall be the  average  price then being used in the
determination  of the loan value of Oil and Gas  Properties by three  commercial
money  center  banks  reasonably  acceptable  to the  Company  and the  Majority
Holders, that are actively engaged in the business of making loans and extending
credit secured by Oil and Gas Properties.

2 The Oil and Gas Properties  located in the Camp Hill Field in East Texas shall
be  excluded  from the  calculation  of Total  Reserves  unless such Oil and Gas
Properties have been included in the determination of the Borrowing Base.






                                    EXHIBIT A


THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933. THESE SECURITIES
MAY  NOT BE SOLD OR  TRANSFERRED  IN THE  ABSENCE  OF  SUCH  REGISTRATION  OR AN
EXEMPTION   THEREFROM  UNDER  SAID  ACT  OR  APPLICABLE  STATE  BLUE  SKY  LAWS.
ADDITIONALLY,  THE  TRANSFER OF THESE  SECURITIES  IS SUBJECT TO THE  CONDITIONS
SPECIFIED IN THE NOTE PURCHASE AGREEMENT, DATED AS OF OCTOBER [__], 2004, BY AND
AMONG THE ISSUER HEREOF,  THE HOLDERS AND PCRL  INVESTMENTS  L.P., AS COLLATERAL
AGENT  FOR  THE  HOLDERS  ("PURCHASE  AGREEMENT"),  AND  NO  TRANSFER  OF  THESE
SECURITIES  SHALL  BE  VALID  OR  EFFECTIVE  UNTIL  SUCH  CONDITIONS  HAVE  BEEN
FULFILLED. UPON THE FULFILLMENT OF CERTAIN OF SUCH CONDITIONS, THE ISSUER HEREOF
HAS AGREED TO DELIVER TO THE HOLDER HEREOF A NEW  CERTIFICATE,  NOT BEARING THIS
LEGEND,  FOR THE  SECURITIES  REPRESENTED  HEREBY  REGISTERED IN THE NAME OF THE
HOLDER  HEREOF.  COPIES OF SUCH  AGREEMENT MAY BE OBTAINED AT NO COST BY WRITTEN
REQUEST MADE BY THE HOLDER OF RECORD OF THIS CERTIFICATE TO THE SECRETARY OF THE
ISSUER HEREOF.

THIS NOTE IS SUBJECT TO THE PROVISIONS OF THE SUBORDINATION AGREEMENT,  DATED AS
OF OCTOBER [__], 2004, AMONG PCRL INVESTMENTS L.P., IN ITS CAPACITY AS PURCHASER
AND AS  COLLATERAL  AGENT FOR THE HOLDERS  PURSUANT TO THE  PURCHASE  AGREEMENT,
HIBERNIA  NATIONAL  BANK,  IN ITS  CAPACITY  AS  ADMINISTRATIVE  AGENT  FOR  THE
FINANCIAL  INSTITUTIONS  PARTY TO THE SENIOR CREDIT AGREEMENT (AS DEFINED IN THE
SUBORDINATION  AGREEMENT)  AND COMPANY  (THE  "SUBORDINATION  AGREEMENT").  EACH
HOLDER OF THIS  PROMISSORY  NOTE  SHALL BE  DEEMED,  BY VIRTUE OF SUCH  HOLDER'S
ACQUISITION OF THIS  PROMISSORY  NOTE, TO HAVE AGREED TO PERFORM AND OBSERVE ALL
OF THE TERMS,  COVENANTS,  AND  CONDITIONS  TO BE  PERFORMED  OR OBSERVED BY THE
SUBORDINATED LENDER UNDER (AND AS DEFINED IN) THE SUBORDINATION AGREEMENT.


           10% SENIOR SUBORDINATED SECURED NOTE DUE DECEMBER 15, 2008


No.  [__]
U.S. [________________]                                     Dated:  October [__]

     FOR VALUE  RECEIVED,  the  undersigned,  CARRIZO OIL & GAS,  INC.,  a Texas
corporation   (the   "Company"),   HEREBY  PROMISES  TO  PAY  to  the  order  of
[____________________________]  (the  "Holder") or its successors or assigns the
principal



sum of  [______________________________________]  and  [____]/100  United States
Dollars  ([__________________])  or such greater or lesser  principal  amount of
this Note then  outstanding,  on December 15, 2008 (the "Maturity  Date"),  with
interest  (calculated on the basis of a year of 360 days,  consisting of twelve,
30-day months) (a) on the unpaid  principal amount hereof at the rate of 10% per
annum from [the date of initial  issuance],  payable  quarterly  in arrears each
March 5, June 5, September 5 and December 5 (each a "Payment Date"),  commencing
[March 5, 2005 or if issued on or after March 5, 2005,  the first  Payment  Date
after  issuance],  until the principal hereof shall have become due and payable,
and  (b) on the  unpaid  balance  hereof  at a rate of 12% per  annum  upon  the
occurrence  and during the  continuance of an Event of Default as defined in the
Purchase Agreement referred to below.

     Except as otherwise  provided in Sections  3.3, 3.5 and 3.6 of the Purchase
Agreement referred to below,  payments of principal of, interest on and premium,
if any,  with  respect to this Note are to be made in lawful money of the United
States of America,  by wire transfer of  immediately  available  funds,  to such
account as the holder of this Note shall have specified by written notice to the
Company from time to time; provided that notwithstanding the foregoing,  on each
Payment Date  occurring  on or before June 5, 2007,  the Company may defer fifty
percent  (50%) of the  interest  due on such  Payment  Date  and  such  deferred
interest  shall become a part of the  principal  due hereunder as of the Payment
Date such interest  became due,  shall earn  interest as provided  hereunder and
shall be due and payable on the Maturity Date unless the maturity of the amounts
due hereunder are accelerated pursuant to the terms of this Agreement.

     This Note is one of the Notes (herein called the "Notes")  issued  pursuant
to the Note  Purchase  Agreement,  dated as of  October  29,  2004 (as it may be
amended,  supplemented  or  otherwise  modified  from  time to time,  being  the
"Purchase  Agreement"),  by and  among  the  Company,  the  Purchasers  and PCRL
Investments L.P., as Collateral Agent. Each holder of' this Note will be deemed,
by its  acceptance  hereof,  (i) to have made the  representations  set forth in
Article XIII of the Purchase  Agreement;  (ii) to have agreed to be bound by the
subordination provisions set forth in Article XIV of the Purchase Agreement; and
(iii) to have agreed to be bound by the confidentiality  provisions set forth in
Section 16.15 of the Purchase Agreement.

     This Note is a registered Note and, as provided in the Purchase  Agreement,
upon surrender of this Note for  registration of transfer duly executed,  by the
registered  holder hereof or such holder's  attorney duly authorized in writing,
and compliance with other provisions of the Purchase Agreement, a new Note for a
like  principal  amount  will be issued to, and  registered  in the name of, the
transferee.  Prior to due presentment for registration of transfer,  the Company
may treat the person in whose name this Note is  registered  as the owner hereof
for the purpose of receiving payment and for all other purposes, and the Company
will not be affected by any notice to the contrary.

     This Note is subject to prepayment,  in whole or from time to time in part,
at the times and on the  terms  specified  in the  Purchase  Agreement,  but not
otherwise.

     If an Event of  Default,  under and as defined in the  Purchase  Agreement,
occurs and is  continuing,  the entire unpaid  principal of this Note,  together
with  accrued  interest  thereon,  may be declared or  otherwise  become due and
payable in the manner, at the price and with the effect



provided in the Purchase Agreement.

     Demand,  presentment,  protest  and notice of  non-payment  and protest are
hereby waived by the Company.

     This Note shall be governed by, and construed and interpreted in accordance
with, the laws of the State of New York.

     All  capitalized  terms  used but not  defined  herein  have  the  meanings
ascribed to them in the Purchase Agreement referred to above.

     IN WITNESS WHEREOF,  the Company has caused this Note to be executed by its
duly authorized officer as of the date first set forth above.

                                    CARRIZO OIL & GAS, INC.



                                    By:
                                    Name:
                                          Its: ________________________________





                                    GUARANTY

     For value  received,  CCBM,  INC.,  a Texas  corporation,  pursuant to that
certain  Commercial  Guaranty  dated  October 29, 2004,  hereby  unconditionally
guarantees  to the Holder of the Note upon which this  Guaranty is endorsed  (a)
the due and punctual payment,  on a limited and subordinated  basis as set forth
in Article XIV of the  Purchase  Agreement  pursuant to which such Note and this
Guaranty were issued, of the principal of, premium (if any) and interest on such
Note when and as the same shall become due and payable for any reason  according
to the terms of such Note and Article IX of the Purchase Agreement, and (b) that
all other  obligations  of the Company  under the Agreement or the Notes will be
promptly paid in full or performed in accordance with the terms of the Agreement
and the Notes.



                                    CCBM, INC.


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





                                    EXHIBIT B

                            CERTIFICATE ACCOMPANYING
                              FINANCIAL STATEMENTS
                              --------------------

     Reference  is made to that  certain  Note  Purchase  Agreement  dated as of
October ___, 2004 (as from time to time amended, the "Agreement"),  by and among
Carrizo Oil & Gas, Inc., a Texas corporation ("Company"), PCRL Investments L.P.,
as Collateral Agent, and certain holders party thereto ("Holders").  Terms which
are defined in the Agreement are used herein with the meanings given them in the
Agreement.

     This Certificate is furnished  pursuant to Section 6.1(c) of the Agreement.
Together  herewith Company is furnishing to the Collateral Agent and each Holder
Company's *[audited/unaudited] financial statements (the "Financial Statements")
as at ____________ (the "Reporting Date"). Company hereby represents,  warrants,
and acknowledges to Collateral Agent and each Holder that:

     (i) the officer of Company  signing this  instrument  is the duly  elected,
qualified  and acting  ____________  of Company and as such is  Company's  Chief
Financial Officer;

     (ii) the  Financial  Statements  are  accurate and complete and satisfy the
requirements of the Agreement;

     (iii) attached hereto is a schedule of calculations  showing  compliance as
of the  Reporting  Date with the  requirements  of Section [____ or ____] of the
Agreement  *[non-compliance  as of such date with the  requirements  of  Section
[____ or ____ of the Agreement];

     (iv) on the Reporting  Date Company was, and on the date hereof Company is,
in full  compliance  with the disclosure  requirements  of Section [____] of the
Agreement,  and no Default  otherwise existed on the Reporting Date or otherwise
exists on the date of this instrument  *[except for Default(s)  under Section(s)
____________  of the  Agreement,  which  *[is/are]  more  fully  described  on a
schedule attached hereto].

     *[Unless   otherwise   disclosed  on  a  schedule   attached  hereto,]  The
representations  and  warranties  of Company set forth in the  Agreement and the
other Documents are true and correct on and as of the date hereof (except to the
extent that such  representations and warranties were made as of a specific date
or updated, modified or supplemented as of a subsequent date with the consent of
Majority holders and the Collateral Agent),  with the same effect as though such
representations and warranties had been made on and as of the date hereof.

     The officer of Company signing this instrument hereby certifies that he/she
has  reviewed the  Documents  and the  Financial  Statements  and has  otherwise
undertaken such inquiry as is in his opinion  necessary to enable him to express
an informed  opinion with respect to the above


representations,  warranties and  acknowledgments of Company and, to the best of
his knowledge, such representations,  warranties,  and acknowledgments are true,
correct and complete.

     IN WITNESS WHEREOF, this instrument is executed as of ____________, 20__.


                                    CARRIZO OIL & GAS, INC.


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








                                    EXHIBIT C

                          CERTIFICATE OF EFFECTIVENESS


     This Certificate of Effectiveness  (this  "Certificate")  is executed as of
the [____] day of October, 2004, by and between Carrizo Oil & Gas, Inc., a Texas
corporation (the "Company") and PCRL  Investments  L.P., as the Collateral Agent
("Collateral  Agent") for the Holders  under and as defined in that certain Note
Purchase  Agreement  (the  "Agreement"),  dated as of October [__],  2004 by and
among the Company,  the  Collateral  Agent and the Holders named  therein.  This
Certificate  is executed  pursuant to Section  4.2 of the  Agreement  and is the
"Certificate of  Effectiveness"  therein  referenced.  Unless otherwise  defined
herein,  all terms used herein with their initial letter  capitalized shall have
the meaning given such terms in the  Agreement.  The Company and the  Collateral
Agent on  behalf of  itself  and the  Holders  hereby  acknowledge  and agree as
follows:

     1. Company has satisfied each condition  precedent to the  effectiveness of
the Agreement contained in Section 4.1 of the Agreement.

     2. This Agreement is effective as of the date hereof.

                                    PCRL INVESTMENTS L.P.,
                                    as the Collateral Agent for the Holders


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


                                    CARRIZO OIL & GAS, INC.,
                                    as the Company


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





                                    EXHIBIT D

                        FORM OF COMPANY'S COUNSEL OPINION







                                    EXHIBIT E

                  FORM OF SUBORDINATED NOTE AGREEMENT AMENDMENT






                                    EXHIBIT F

                    FORM OF SENIOR CREDIT AGREEMENT AMENDMENT







                                    EXHIBIT G

                      FORM OF REGISTRATION RIGHTS AGREEMENT