SEAGULL ENERGY CORP
8-K, 1994-01-19
NATURAL GAS TRANSMISISON & DISTRIBUTION
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<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION


                            Washington, D. C. 20549


                                    FORM 8-K



                                 CURRENT REPORT



     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934




Date of Report (Date of earliest event reported) January 4, 1994



                          SEAGULL ENERGY CORPORATION                          
______________________________________________________________________________
             (Exact name of registrant as specified in its charter)



                                     Texas                                    
______________________________________________________________________________
                 (State or other jurisdiction of incorporation)



                1-8094                                74-1764876             
___________________________________   ________________________________________
     (Commission File Number)            (IRS Employer Identification No.)



            1001 Fannin, Suite 1700, Houston, Texas          77002-6714       
______________________________________________________________________________  
          (Address of principal executive offices)          (Zip Code)



                                 (713) 951-4700                                
______________________________________________________________________________ 
               Registrant's telephone number, including area code



                                Not Applicable                                
______________________________________________________________________________  
         (Former name or former address, if changed since last report.)
<PAGE>   2
ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.

         On January 4, 1994, an indirect wholly owned subsidiary of Seagull
Energy Corporation ("Seagull" or the "Company") acquired all of the outstanding
shares of stock (the "Stock") of Novalta Resources Inc. ("Novalta") and an
intercompany note (the "Note") from Novalta to its parent, Novacor
Petrochemicals Ltd. ("Novacor Petrochemicals").  The Stock and the Note were
acquired for a purchase price of approximately $203 million in cash, subject to
customary post-closing adjustments described below (the "Seagull Canada
Acquisition").  The economic effective date of the Seagull Canada Acquisition
was December 31, 1993 (the "Effective Date").  Effective as of the January 4,
1994 Closing Date, Novalta was amalgamated with one of its subsidiaries along
with Seagull Energy Canada Ltd., the indirect subsidiary of Seagull that
acquired Novalta.  The resulting amalgamated company was named Seagull Energy
Canada Ltd. ("Seagull Canada").  As a result of the amalgamation, the Note was
extinguished.  See "Purchase Price" and "Financing" below.  References to
dollars throughout this Current Report on Form 8-K refer to U. S. dollars
unless otherwise noted.

SEAGULL CANADA PROPERTIES

         Seagull Canada's assets (the "Seagull Canada Properties") consist
primarily of natural gas and oil reserves and developed and undeveloped lease
acreage concentrated principally in a small number of fields located in
Alberta, Canada.  Seagull estimates that the Seagull Canada Acquisition
provided proved reserves of approximately 244 billion cubic feet of natural gas
and about 2.8 million barrels of oil, condensate and natural gas liquids as of
the Effective Date.  Approximately 80 percent of these reserves and 75 percent
of Seagull Canada's total producing wells are concentrated in 16 of 95 total
fields.  As of December 31, 1993, the Seagull Canada Properties consisted of
lease acreage holdings including approximately 200,000 net developed acres and
approximately 250,000 net undeveloped acres.

PURCHASE PRICE

         The purchase price was determined pursuant to arm's-length
negotiations between Seagull and Novacor Petrochemicals, based on an economic
effective date of December 31, 1993.  The $203 million purchase price for the
Stock and the Note is subject to certain customary post-closing adjustments for
working capital and capital expenditures for 1993 in excess of a specified
threshold pursuant to the provisions of the Sale Agreement, dated November 19,
1993, between Seagull and Novacor Petrochemicals.

FINANCING

         The Seagull Canada Acquisition was financed primarily with a new $175
Million reducing revolving credit facility (the "Canadian Credit Agreement"),
as well as borrowings under Seagull's amended and restated $475 million
revolving credit facility (the "Revolver") with a group of major U. S. and
international banks.  The Canadian Credit Agreement between Seagull Canada and
10 Canadian affiliates of major U. S. and international banks provides for dual
currency borrowings in U. S. and Canadian dollars with a nominated maximum
borrowing availability of $160 million , which may be increased or decreased by
the Company at any time pursuant to provisions of the Canadian Credit
Agreement, up to the maximum commitment of $175 million.  

<PAGE>   3
The Canadian Credit Agreement matures on December 31, 1999 and commitments 
thereunder begin to decline on March 31, 1996 in equal quarterly reductions 
of $10,937,500.  As of January 4, 1994, immediately following the Seagull 
Canada Acquisition, approximately $152 million in borrowings were outstanding 
under this facility, which are currently denominated in Canadian dollars.

         Borrowings outstanding under the Canadian Credit Agreement funded in
U. S. dollars bear interest, at Seagull Canada's option, at a rate equal to (i)
either one, two, three or six month Adjusted LIBOR, plus a margin (the "LIBOR
Margin") or (ii) the Reference Rate, plus a margin (the "Prime Margin").  The
"Reference Rate" is the greater of (i) 0.5% per annum above the daily federal
funds rate or (ii) the prime rate of the agent bank.  The LIBOR Margin ranges
from 0.625% to 2.5% per annum, depending upon Seagull's credit rating and
consolidated Debt to Capitalization Ratio (as defined under the Revolver), and
the Prime Margin ranges from 0% to 1.5% per annum, depending upon the same
factors.  Borrowings outstanding in Canadian dollars bear interest, at Seagull
Canada's option, at a rate equal to (i) either one, two, three or six month
Bankers' Acceptance Rate plus the LIBOR Margin or (ii) the Paying Agent's prime
rate plus the Prime Margin.

         In connection with the consummation of the Seagull Canada Acquisition,
the Revolver was amended to allow for the incurrence of debt by Seagull Canada
under the Canadian Credit Agreement and to allow Seagull to guarantee such
debt.  As an additional amendment to the Revolver, the "Borrowing Base" was
increased to $610 million to provide for value attributed to Seagull Canada's
proved reserves.  The Borrowing Base is based upon the value of the proved
reserves of the Company's exploration and production segment and the financial
performance of the Company's other business segments as provided for under the
Revolver, and limits the total amount of senior indebtedness available to the
Company.

         The available commitment under the Revolver is subject to the
Borrowing Base and is determined after consideration of outstanding borrowings
under Seagull's other senior debt facilities.  As of January 4, 1994,
immediately following the Seagull Canada Acquisition, borrowings outstanding
under the Revolver were $188.5 million, leaving immediately available unused
commitments of approximately $149.3 million, net of outstanding letters of
credit of $2.2 million, $100 million of borrowings outstanding under Seagull's
senior notes, the nominated maximum borrowing availability of $160 million
under the Canadian Credit Agreement, and $10 million in borrowings outstanding
under one of Seagull's money market facilities.

         The Revolver and the Canadian Credit Agreement are unsecured credit
facilities.  Both facilities contain restrictive provisions regarding the
incurrence of additional debt, the making of investments outside of existing
lines of business, the maintenance of certain financial levels (based upon
Seagull's consolidated financial condition and results of operations), the
incurrence of additional liens, the declaration or payment of dividends (other
than dividends payable solely in the form of additional shares of the Company's
common stock) and the repurchase or redemption of capital stock.





                                       2
<PAGE>   4
ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

(a)      Financial Statements of Business Acquired.

           It is impracticable to file the financial statements requiredto be 
           provided by Item 7(a) of Form 8-K at this time.  The financial 
           statements of Novalta will be filed under cover of Form 8-KA as 
           soon as practicable, but not later than March 20, 1994.

(b)      Pro Forma Financial Information.

           It is impracticable to file pro forma financial statements required 
           to be provided by Item 7(b) of Form 8-K at this time. The pro forma 
           financial statements will be filed under cover of Form 8-KA as soon 
           as practicable, but not later than March 20, 1994.

(c)      Exhibits.

<TABLE> 

                 <S>      <C>
                 *2.1     Sale Agreement made and entered into as of November
                          19, 1993 between Novacor Petrochemicals Ltd. and
                          Seagull Energy Corporation (including Appendix J,
                          "Tax Provisions").

                 *2.2     Guarantee executed in connection with Sale Agreement
                          included as Exhibit 2.1 hereto.

                 *2.3     First Amendment to Amended and Restated Credit
                          Agreement dated December 30, 1993 by and among
                          Seagull, each of the banks signatory thereto, and
                          Texas Commerce Bank National Association, as agent
                          (without exhibits and schedules).

                 *2.4     Credit Agreement, U. S. $175 Million Reducing
                          Revolving Credit Facility, dated December 30, 1993 by
                          and among Seagull Energy Canada Ltd., each of the
                          banks signatory thereto, and Chemical Bank of Canada,
                          The Bank of Nova Scotia and Canadian Imperial Bank of
                          Commerce, as co-agents (without exhibits).

                 *2.5     Form of Revolving Credit Loan Note (U. S. Dollars)
                          executed in connection  with  the  Credit  Agreement
                          included  as Exhibit 2.4 hereto.

                 *2.6     Form of Revolving Credit Loan Note (Canadian Dollars)
                          executed in connection with the Credit Agreement
                          included as Exhibit 2.4 hereto.

</TABLE>



                                       3
<PAGE>   5
<TABLE>
                 <S>      <C> 
                 *2.7     Intercreditor Agreement executed in connection with
                          the Credit Agreement included as Exhibit 2.4 hereto.

                 *2.8     Form of Bankers' Acceptance executed in connection
                          with the Credit Agreement included as Exhibit 2.4
                          hereto.

                 *2.9     Guarantee executed in connection with the Credit
                          Agreement included as Exhibit 2.4 hereto.


</TABLE>


_________________                       
* Filed herewith.





                                       4
<PAGE>   6
                                   SIGNATURES


         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

Date:  January 19, 1994



                                       SEAGULL ENERGY CORPORATION


                                       By:  Rodney W. Bridges
                                            Rodney W. Bridges
                                            Vice President and Controller
                                            (Principal Accounting Officer)





                                       5
<PAGE>   7
                                 EXHIBIT INDEX


<TABLE>
<CAPTION>
                                                                         Page
                                                                         ----
<S>           <C>
*2.1          Sale Agreement made and entered into as of November 19, 1993 between Novacor Petrochemicals Ltd. and
              Seagull Energy Corporation (including Appendix J, "Tax Provisions").

*2.2          Guarantee executed in connection with Sale Agreement included as Exhibit 2.1 hereto.

*2.3          First Amendment to Amended and Restated Credit Agreement dated December 30, 1993 by and among Seagull,
              each of the banks signatory thereto, and Texas Commerce Bank National Association, as agent (without
              exhibits and schedules).

*2.4          Credit Agreement, U. S. $175 Million Reducing Revolving Credit Facility, dated December 30, 1993 by and
              among Seagull Energy Canada Ltd., each of the banks signatory thereto, and Chemical Bank of Canada, The
              Bank of Nova Scotia and Canadian Imperial Bank of Commerce, as co-agents (without exhibits).

*2.5          Form of Revolving Credit Loan Note (U. S. Dollars) executed in connection with the Credit Agreement
              included as Exhibit 2.4 hereto.

*2.6          Form of Revolving Credit Loan Note (Canadian Dollars) executed in connection with the Credit Agreement
              included as Exhibit 2.4 hereto.

*2.7          Intercreditor Agreement executed in connection with the Credit Agreement included as Exhibit 2.4 hereto.

*2.8          Form of Bankers' Acceptance executed in connection with the Credit Agreement included as Exhibit 2.4
              hereto.

*2.9          Guarantee executed in connection with the Credit Agreement included as Exhibit 2.4 hereto.
</TABLE>


_________________                          
* Filed herewith.





                                       6

<PAGE>   1
                                                            Exhibit 2.1




                                 SALE AGREEMENT





                                    BETWEEN:



                          NOVACOR PETROCHEMICALS LTD.



                                    - and -


                           SEAGULL ENERGY CORPORATION





Dated as of November 19, 1993

<PAGE>   2
                               TABLE OF CONTENTS


1.  INTERPRETATION . . . . . . . . . . . . . . . . . . . . . . . . . . .   1 
2.  SALE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13 
3.  PRICE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13 
4.  CLOSING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19 
5.  EXAMINATION OF RECORDS AND INFORMATION . . . . . . . . . . . . . . .  23 
6.  TITLE TO REVIEWED LANDS AND ENVIRONMENTAL REVIEW . . . . . . . . . .  24
7.  TITLE DEFICIENCIES . . . . . . . . . . . . . . . . . . . . . . . . .  25 
8.  INTERIM PERIOD . . . . . . . . . . . . . . . . . . . . . . . . . . .  27 
9.  REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . .  29 
10. EMPLOYEES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
11. USE OF NAME "NOVALTA". . . . . . . . . . . . . . . . . . . . . . . .  48 
12. (Intentionally omitted)  . . . . . . . . . . . . . . . . . . . . . .  49 
13. TERMINATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49 
14. AMENDMENT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49 
15. WAIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49 
16. TIME OF THE ESSENCE  . . . . . . . . . . . . . . . . . . . . . . . .  49 
17. NOTICES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50 
18. ENUREMENT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51 
19. FURTHER ASSURANCES . . . . . . . . . . . . . . . . . . . . . . . . .  52 
20. COSTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52 
21. GOVERNING LAW  . . . . . . . . . . . . . . . . . . . . . . . . . . .  52 
22. ENTIRE AGREEMENT . . . . . . . . . . . . . . . . . . . . . . . . . .  52 
23. PUBLIC ANNOUNCEMENTS . . . . . . . . . . . . . . . . . . . . . . . .  53 
24. COUNTERPART EXECUTION  . . . . . . . . . . . . . . . . . . . . . . .  54


                                   APPENDICES

Appendix "A" - Land Schedule
Appendix "B" - Major Facilities
Appendix "C" - 1993 AFE's
Appendix "D" - Claims
Appendix "E" - Financial Statements
Appendix "F" - Howard Opinions/Reviewed Lands
Appendix "G" - Arbitration Procedure
Appendix "H" - Termination Obligations
Appendix "I" - Guarantor Financial Statements
Appendix "J" - Tax Provisions





<PAGE>   3
                                       3

                                   SCHEDULES

Schedule 8.2              - Employee Benefits
Schedule 8.2(c)           - Compensation Arrangements
Schedule 8.2(h)           - Affiliate Agreements
Schedule 9.15             - Employees
Schedule 9.16             - Plans
Schedule 9.35(e)          - Management Contracts
Schedule 9.47             - Take-or-Pay
Schedule 9.50             - Independent Operations Penalties
Schedule 9.51             - Certain Changes
Schedule 9.53             - Through-Put Guarantees
Schedule 9.54             - Inter-Company Transactions





<PAGE>   4
                                 SALE AGREEMENT



THIS AGREEMENT made as of this 19th day of November, 1993

         BETWEEN:

         Novacor Petrochemicals Ltd. a body corporate, incorporated under the
         laws of Alberta ("Vendor")

                                    - and -

         Seagull Energy Corporation a body corporate, incorporated under the
         laws of the State of Texas ("Purchaser")


WHEREAS the Vendor has agreed to sell and the Purchaser has agreed to purchase
the Shares and Note of Novalta Resources Inc.;

NOW THEREFORE in consideration of the covenants, agreements, representations,
warranties and payments set forth below, the sufficiency of such consideration
being hereby conclusively acknowledged, the parties hereto covenant and agree
as follows:


1.  INTERPRETATION

(A) Definitions:  In this Agreement (including the recitals, this clause
         and the appendices) the words and phrases set forth below shall have
         the meanings given them below, namely:

<TABLE>
    <S>          <C>
    1.1          "Affiliates" means any and all affiliates as such term is defined and utilized in the Business Corporations
                  Act (Alberta) but is not restricted to corporations incorporated or continued under such legislation;

    1.2          "Agreement" means this agreement and all appendices attached hereto together with all instruments
                 supplemental to or in amendment or confirmation of this Agreement;

    1.3          "Arbitration Procedure" means the arbitration procedure attached as Appendix "G";

    1.4          "Arbitrator" means a party acting as an arbitrator in accordance with the Arbitration Procedure;

    1.5          "Arthur D. Little Report" means the environmental audit report dated October 1993 with respect to the

</TABLE>



<PAGE>   5

                                       2                      
<TABLE>
         <S>              <C>
                          Environmentally Reviewed Lands as prepared by Arthur D. Little of Canada Limited;

         1.6              "Assets" means all of the assets of Novalta including, without limitation, the Resource Assets, the Office
                          Equipment, the investment in the shares of EBOC and the Working Capital as at the Closing Time;

         1.7              "Auditors" means Ernst & Young;

         1.8              "Audited Closing Financial Statements" means the audited closing consolidated financial statements of
                          Novalta and its subsidiaries for the period ending December 31, 1993 including, without limitation, the
                          notes thereto and the auditor's report thereon;

         1.9              "Bank Security" means the security provided by Novalta under the Canadian $110 million multicurrency
                          revolving term credit facility with The Bank of Nova Scotia as lender dated as of January 1, 1990 and as
                          amended and restated March 25, 1992, the security provided by Novalta under the Novacor Chemicals Ltd.
                          Credit Facility with The Bank of Nova Scotia, Canadian Imperial Bank of Commerce, The Toronto-Dominion
                          Bank, Bank of Montreal, Royal Bank of Canada and National Bank of Canada and the security provided by
                          Novalta Resources Ltd., a predecessor in interest to Novalta, relating to certain of the Resource Assets
                          under the Canadian $75 million multicurrency revolving term credit facility with The Bank of Nova Scotia
                          as lender dated as of March 28, 1988 and as restated by an agreement dated as of April 29, 1989;

         1.10             "Burns Fry" means Burns Fry Limited;

         1.11             "Business Day" means any day other than a Saturday or a Sunday or a day which is a statutory holiday under
                          the laws of Alberta or Canada;

         1.12             "Closing" means the transfer of the Shares and Note to Purchaser, the payment of the Purchase Price to
                          Vendor and the completion of all other matters incidental thereto;
</TABLE>





<PAGE>   6
                                       3


<TABLE>

         <S>              <C>
         1.13             "Closing Place" means Vendor's offices located at 801 - 7th Avenue S.W., Calgary, Alberta or such other
                          place as the parties agree;

         1.14             "Closing Time" means 10:00 a.m., Calgary Time, on  January 4, 1994, or such other time or date as may be
                          agreed by the parties;

         1.15             "Common Shares" means the 100 fully paid and non-assessable Class "A" common voting shares in the capital
                          stock of Novalta registered in the name of Vendor;

         1.16             "Confidential Information" has the meaning set out in the Confidentiality Agreement;

         1.17             "Confidentiality Agreement" means the Confidentiality Agreement dated September 28, 1993 between Burns Fry
                          or PowerWest (as agent for Vendor and Novalta) and Purchaser, as supplemented by that certain letter
                          agreement with EBOC dated October 18, 1993 and that certain Non-Competition Agreement with Novalta dated
                          October 20, 1993;

         1.18             "Deposit" means $10 million deposited with Vendor's Solicitors in trust for Vendor;

         1.19             "EBOC" means EBOC Energy Ltd.;

         1.20             "EBOC Value" means the product of the number of EBOC common shares owned by Novalta at Closing and the
                          value per EBOC common share of $1.046 provided, however, that if Novalta should sell some, but not all, 
                          of its EBOC shares in the public market prior to Closing, or if a public trading market otherwise 
                          develops for the EBOC common shares prior to Closing, then the remaining EBOC common shares held by 
                          Novalta would be valued for purposes of this Agreement at the fair market value of such shares at the 
                          Closing Time (based upon the closing price on its principal exchange or trading market at the Closing 
                          Time), multiplied by a factor of 85% to reflect the illiquidity, rights of first refusal and other 
                          matters that adversely affect the value of such shares;

         1.21             "Effective Time" shall mean immediately prior to commencement of business on January 1, 1994;
</TABLE>





<PAGE>   7
                                       4

<TABLE>

         <S>              <C>
         1.22             "Environmental Consultant" means, Arthur D. Little of Canada Limited;

         1.23             "Environmental Law" means all statutes, regulations and governmental orders and directives respecting the
                          protection, control of contamination or pollution of soil, air or water (including, without limitation,
                          ground water) applicable to the Assets;

         1.24             "Environmental Liabilities" means any and all environmental damage, contamination or other environmental
                          condition directly or indirectly pertaining to Novalta or the Assets, whether or not caused by Novalta or
                          by a breach of Environmental Law, and whether or not identified or currently identifiable, including,
                          without limitation, any matters related to surface, underground, air, groundwater or surface water
                          contamination, the abandonment or plugging of any well or wells, the restoration or reclamation of any 
                          part of the Assets, or the removal of or failure to remove any foundations, structures or equipment from 
                          the Assets, and all matters set forth in the Arthur D. Little Report;

         1.25             "Environmentally Reviewed Lands" means the Resource Assets in respect of which the Arthur D. Little Report
                          or any portion thereof was prepared;

         1.26             "Financial Statements" means the (a) audited consolidated financial statements of Novalta and its
                          subsidiaries for the period ending December 31, 1992 including, without limitation, the notes thereto and
                          the auditors report thereon, and (b) the unaudited interim consolidated financial statements of Novalta 
                          and its subsidiaries as of and for the nine months ended September 30, 1993, a copy of the foregoing being
                          attached hereto as Appendix "E";

         1.27             "GAAP" means generally accepted accounting principles and procedures adopted from time to time by the
                          Canadian Institute of Chartered Accountants consistently applied;

         1.28             "Howard Opinions" means the title opinions previously provided to Novalta by Howard, Mackie in respect of
                          the Reviewed Lands, the foregoing opinions being listed in Appendix "F";
</TABLE>





<PAGE>   8
                                       5


<TABLE>

         <S>              <C>
         1.29             "Interest Rate" means a floating annual rate of interest equal to the floating annual rate of interest
                          established from time to time by the main branch of The Bank of Nova Scotia at Calgary, Alberta as the 
                          base rate it will use to determine rates of interest on Canadian dollar loans to its most favoured 
                          customers in Canada and designated as its prime rate;

         1.30             "Land Schedule" means the land schedule attached as Appendix "A";

         1.31             "Lands" means the lands included in the Assets, which are set forth and described in the Land Schedule, 
                          and includes the Petroleum Substances within, upon or under such lands, together with the right to     
                          explore for, drill for, win, take, remove, recover, possess, own, sell or divest the same insofar as 
                          such rights are granted by the Leases;

         1.32             "Leases" means the leases, reservations, permits, licences or other documents of title by virtue of which
                          the holder thereof is entitled to drill for, win, take, remove, recover, possess, own, sell or divest the
                          Petroleum Substances underlying all or any part of the Lands and any extensions or renewals thereof,
                          amendments thereto, replacements or substitutions therefor or further documents of title issued pursuant
                          thereto including, without limitation, the leases set forth and described in the Land Schedule;

         1.33             "Major Facilities" means the gas plants, compressor stations and other facilities described in Appendix
                          "B";

         1.34             "Material Contracts" means all contracts of Novalta:

                          (i)     involving an aggregate annual net obligation on the part of, or net payment to, Novalta in the
                                  excess of $250,000, which are not terminable at the option of either party without payment or
                                  penalty on 60 days notice or less; and

                          (ii)    any other contract that could reasonably be expected to have an effect on the value of Novalta in
                                  the amount in excess of $250,000;
</TABLE>





<PAGE>   9
                                       6


<TABLE>
         <S>              <C>
         1.35             "Miscellaneous Interests" means all property, assets and rights, other than the Petroleum and Natural Gas
                          Rights and the Tangibles, pertaining to the Petroleum and Natural Gas Rights and the Tangibles including,
                          without limitation, the following:

                          (a)     all original drawings, contracts (including production sales contracts and processing agreements),
                                  agreements, books, files (including well files) and other records, transportation rights, patents,
                                  licences and permits (including licences, approvals and permits issued by the Energy Resources
                                  Conservation Board and by Alberta Environment), seismic, geological, geophysical, production and
                                  engineering data (including well and test data), analysis, interpretation and reports (including
                                  contour maps and conclusions) and all other documents relating to the Petroleum and Natural Gas
                                  Rights, any lands with which the Lands have been unitized or the Tangibles and any and all rights
                                  in relation thereto;

                          (b)     all subsisting rights to enter upon, use and occupy the surface of any of the Lands, any lands
                                  with which the same have been unitized, any lands upon which any wells bottoming under but not
                                  located upon the Lands are situate and any other lands within, upon or under which the Resource
                                  Assets (including the Tangibles comprised therein) may be situate;

                          (c)     the holes for and the casing contained in all wells for the purpose of production of Petroleum
                                  Substances, the injection of water or other substances, the disposal of water or other substances
                                  or otherwise which are situate on or bottoming under the Lands or lands with which the Lands have
                                  been unitized; and

                          (d)     any right, title, estate or interest in or to any asset which relates to but does not comprise
                                  part of the Petroleum and Natural Gas Rights or the Tangibles;
</TABLE>





<PAGE>   10
                                       7

<TABLE>
         <S>              <C>
         1.36             "Note" means the non-interest bearing loan from Vendor to Novalta in the amount of $85,154,136.00;

         1.37             "Novalta" means Novalta Resources Inc., or in the event Novalta Resources Inc. changes its name prior to
                          Closing as contemplated by Subclause 11.1, such name selected by Novalta Resources Inc. as its new name;

         1.38             "Office Equipment" means all office furniture, furnishings, equipment (including computers and computer-
                          related equipment), supplies, leasehold improvements and art purported to be owned by Novalta and located
                          at its Calgary, Brooks, Athabasca, Coronation and Edson, Alberta offices;

         1.39             "Office Leases" means Novalta's real property leases for its offices located at its head office in Calgary
                          and its field offices in Brooks, Athabasca, Coronation, and Edson, Alberta;

         1.40             "Permitted Encumbrances" means:

                          (a)     easements, rights of way, servitude or other similar rights in land including, without limitation,
                                  rights of way and servitude for railways, sewers, drains, gas and oil pipelines, gas and water
                                  mains, electric light, power, telephone, telegraph or cable television conduits, poles, wires and
                                  cables, in each case to the extent that such do not materially interfere with the operation of any
                                  Assets;

                          (b)     the right reserved to or vested in any government or other public authority by the terms of any
                                  instrument or statutory provision to terminate any of the Leases or to require annual or other
                                  periodic payments as a condition to the continuance thereof;

                          (c)     taxes on Petroleum Substances or the income or revenue therefrom (excluding income and capital
                                  taxes) not delinquent and governmental requirements as to production rates of general application
                                  on the operation of any property or otherwise affecting the value of any property;
</TABLE>





<PAGE>   11
                                       8

<TABLE>
                          <S>     <C>
                          (d)     contracts for the sale of Petroleum Substances comprising part of the Assets;

                          (e)     the terms and conditions of the Leases;

                          (f)     rights reserved to or vested in any municipality or governmental, statutory or public authority to
                                  control or regulate any of the Assets in any manner and all applicable laws, rules and orders of
                                  any governmental authority;

                          (g)     undetermined or inchoate liens incurred or created as security in favour of persons conducting
                                  operations in relation to the Assets for Novalta's share of the costs and expenses associated with
                                  such operations (A) if they have not been filed pursuant to law, (B) if filed, they have not yet
                                  become due and payable or payment is being withheld as provided by law or (C) if their validity is
                                  being contested in good faith in the ordinary course of business by appropriate action;

                          (h)     the reservations, limitations, provisos and conditions contained in any original grants from the
                                  Crown of any of the Lands or interests therein and statutory exceptions to title;

                          (i)     agreements and plans relating to pooling or unitization;

                          (j)     provisions for penalties and forfeitures under agreements as a consequence of non-participation in
                                  operations;

                          (k)     liens incurred or granted in the ordinary course of business to a public utility, municipality or
                                  governmental authority in connection with operations conducted with respect to the Assets, in each
                                  case to the extent that such do not materially interfere with the operation of any Assets;

                          (l)     the royalties, carried interests, production payments, net profits interests and other
                                  encumbrances set forth in the Land Schedule; and
</TABLE>





<PAGE>   12
                                       9


<TABLE>
         <S>              <C>
                          (m)     subject to the undertakings provided under Subclause 4.2(k), 
                                  the Bank Security;

         1.41             "Petroleum and Natural Gas Rights" means any and all interests of 
                          Novalta in and to the Lands and the Leases together with royalty 
                          interests, net profits interests and other like interests and the 
                          right to acquire any of the foregoing;

         1.42             "Petroleum Substances" means petroleum, natural gas and related 
                          hydrocarbons and all other substances, whether gaseous, liquid or 
                          solid and whether hydrocarbons or not, associated therewith or any of 
                          them insofar as the same are granted by the Leases, together with all 
                          gaseous, liquid or solid substances, materials or additives which are 
                          injected, added, mixed, entrained, or otherwise used or employed in the
                          winning, taking, production, gathering, processing, conditioning, 
                          storage, transmission or treatment of such petroleum, natural gas and 
                          related hydrocarbons;

         1.43             "Plan" means any employee benefit plan, program or arrangement sponsored, 
                          maintained or contributed to by Vendor or Novalta or their Affiliates for 
                          the benefit of the Novalta employees as of the date of this Agreement, 
                          including, without limitation, any bonus, pension, savings, profit sharing, 
                          deferred compensation, supplemental retirement income, stock option, 
                          hospitalization insurance, medical, dental, disability, automobile, life or 
                          accident insurance plan or program;

         1.44             "PowerWest" means PowerWest Financial Ltd.;

         1.45             "Preferred Shares" means the 55,000 fully paid and non-assessable Class "A" 
                          preferred shares in the capital stock of Novalta registered in the name of 
                          Vendor;

         1.46             "Purchase Price" means the amount calculated in accordance with Subclause 3.2, 
                          as adjusted;

         1.47             "Purchaser's Representatives" means any and all of Purchaser's or Purchaser's 
                          Affiliates' directors, officers, employees, agents, consultants, advisors and 
                          representatives including, without limitation, Purchaser's Solicitors, and its 
                          financial advisors;
</TABLE>





<PAGE>   13
                                       10

<TABLE>

         <S>              <C>
         1.48             "Purchaser's Solicitors" means legal counsel employed or retained by Purchaser to assist with the purchase
                          of the Shares and Note;

         1.49             "Purchaser's Total Capital Credit" has the meaning given in Subclause 3.6(b);

         1.50             "Purchaser's Working Capital Credit" has the meaning given in Subclause 3.6(a);

         1.51             "Resource Assets" means the Petroleum and Natural Gas Rights and any and all associated interests of
                          Novalta in and to the Tangibles and the Miscellaneous Interests;

         1.52             "Reviewed Lands" means the leasehold interests addressed in the Howard Opinions;

         1.53             "Shares" means the Common Shares and the Preferred Shares;

         1.54             "Sproule Report" means the 7 volume report entitled "Evaluation of the P. & N.G. Reserves of Novalta
                          Resources Inc. and Amber Valley Energy Corporation (As of July 1, 1993)" prepared by Sproule Associates
                          Limited;

         1.55             "Tangibles" means all tangible depreciable property, assets and facilities situate in, on or about the
                          Lands, appurtenant thereto or used, intended for use or useful in connection therewith or with the
                          exploration, development, injection, production, gathering, processing, conditioning, storage, 
                          transmission or treatment of Petroleum Substances within, upon or under the Lands or lands with which 
                          the Lands have been unitized or other operations thereon or relative thereto including, without 
                          limitation, the Major Facilities;

         1.56             "Title Deficiencies" has the meaning given in Subclause 7.1;

         1.57             "Total Capital" means the total exploration and development expenditures spent by Novalta determined in
                          accordance with GAAP in the fiscal year ending December 31, 1993, as shown on the Audited Closing 
                          Financial Statements less exploration and development expenditures for the six months ended June 30, 
                          1993 of $5.1 million and
</TABLE>





<PAGE>   14
                                       11

<TABLE>
         <S>              <C>
                          less a further $7.8 million of expenditures provided for in the Sproule Report for the six months ending 
                          December 31, 1993;

         1.58             "Total Capital Estimate" means the amount estimated by Novalta's accountants prior to Closing to be the
                          Total Capital;

         1.59             "Transitional Costs" means the after tax cost of all one time fees and other expenses incurred after the
                          Effective Time and prior to Closing and not accrued in the Audited Closing Financial Statements by Novalta
                          in respect of the transactions contemplated herein (including, without limitation, fees and other expenses
                          incurred for legal, accounting and tax advice, environmental audit fees, investment banker fees and
                          engineering and land evaluation fees);

         1.60             "Vendor's Solicitors" means legal counsel employed or retained by Vendor to assist with the sale of the
                          Shares and Note;

         1.61             "Vendor's Total Capital Credit" has the meaning given in Subclause 3.6(b);

         1.62             "Vendor's Working Capital Credit" has the meaning given in Subclause 3.6(a);

         1.63             "Working Capital" means Novalta's current assets reduced by its current liabilities determined in
                          accordance with GAAP as of the Effective Time as shown on the Audited Closing Financial Statements; and

         1.64             "Working Capital Estimate" means the amount estimated by Novalta's accountants to be Novalta's Working
                          Capital.
</TABLE>

(B)      Incorporation of Appendices and Schedules:  The following Appendices
         and Schedules are attached and form part of this Agreement and are
         incorporated herein as though contained in the body of this Agreement:

<TABLE>
         <S>              <C>     <C>
         Appendix "A"     -       Land Schedule
         Appendix "B"     -       Major Facilities
         Appendix "C"     -       1993 AFE's
         Appendix "D"     -       Claims
         Appendix "E"     -       Financial Statements
</TABLE>





<PAGE>   15
                                       12

<TABLE>
         <S>                <C>    
         Appendix "F"       - Howard Opinions/Reviewed Lands
         Appendix "G"       - Arbitration Procedure
         Appendix "H"       - Termination Obligations
         Appendix "I"       - Guarantor Financial Statements
         Appendix "J"       - Tax Provisions

         Schedule 8.2       - Employee Benefits
         Schedule 8.2(c)    - Compensation Arrangements
         Schedule 8.2(h)    - Affiliate Agreements
         Schedule 9.15      - Employees
         Schedule 9.16      - Plans
         Schedule 9.35(e)   - Management Contracts
         Schedule 9.47      - Take-or-Pay
         Schedule 9.50      - Independent Operations Penalties
         Schedule 9.51      - Certain Changes
         Schedule 9.53      - Through-Put Guarantees
         Schedule 9.54      - Inter-Company Transactions
</TABLE>

(C)      Appendix References:  References herein to an appendix shall mean a
         reference to an appendix to this Agreement.  References in any
         appendix to "the Agreement" shall mean a reference to this Agreement.
         References in any appendix to another appendix shall mean a reference
         to an appendix to this Agreement.

(D)      Clause and Subclause References:  References herein to a clause shall
         mean a reference to a clause within the body of this Agreement.
         References herein to a subclause or paragraph without identifying the
         clause or subclause of which the subclause or paragraph referred to is
         a part shall mean a reference to such subclause or paragraph in the
         same clause or subclause as in the subclause or paragraph in which
         such reference is made.

(E)      Statutory References:  References herein to a statute shall include
         and shall be deemed to be a reference to such statute and to the
         regulations made pursuant thereto, all amendments made thereto and in
         force from time to time up to and including the Closing Time and any
         statute or regulation that may be passed up to and including the
         Closing Time which has the effect of supplementing or superseding the
         statute or associated regulations.

(F)      Headings:  The headings of clauses and subclauses herein and in the
         appendices are inserted for convenience of reference only and shall
         not affect or be considered to affect the construction of the
         provisions hereof and thereof.





<PAGE>   16
                                       13

(G)      Gender and Number:  This Agreement shall be read with all changes in
         gender and number as may be required by the context.  In particular,
         words importing the singular shall include the plural and vice versa,
         words importing persons shall include firms and corporations and vice
         versa and words importing the masculine gender shall include the
         feminine and neuter genders and vice versa.

(H)      Conflict:  Wherever any provision, whether express or implied, of any
         appendix to this Agreement conflicts or is at variance with any
         provision in the body of this Agreement, the provision in the body of
         this Agreement shall prevail.

(I)      Currency and Mode of Payment:  All dollar amounts referenced herein
         are expressed in Canadian dollars and all payments to be made
         hereunder are to be made by way of certified cheque, solicitor's trust
         cheque, wire transfer of immediately available funds or bank draft.

(J)      Invalidity of Provisions:  If any provision of this Agreement or the
         application thereof to any person or circumstance shall to any extent
         be invalid, illegal or unenforceable, the remainder of this Agreement,
         or the application of such provision to persons or circumstances other
         than those to which it is held invalid, illegal or unenforceable,
         shall not in any way be affected or impaired thereby.

(K)      Subsidiaries:  References in this Agreement in or relating to the
         representations and covenants of Novalta shall be deemed to include
         Novalta and its subsidiaries (which for purposes of this Agreement
         shall include Novalta Rosebank South Limited Partnership), unless the
         context otherwise requires.

2.       SALE

Vendor agrees to sell and transfer the Shares and Note to Purchaser and
Purchaser, in turn, agrees to purchase and receive the Shares and Note from
Vendor, all in accordance with and subject to the terms and conditions set
forth in this Agreement.

3.       PRICE

         3.1     Deposit:  The parties acknowledge that Purchaser,  no later
                 than 5:00 p.m. (Calgary time) on the date hereof, will pay the
                 Deposit to Vendor's Solicitors in trust for Vendor, to be
                 deposited with the Bank of Nova Scotia in the form of a
                 certificate of deposit, such Deposit and interest thereon to
                 be released only in accordance with the provisions of this
                 Subclause 3.1.  The parties agree





<PAGE>   17
                                       14

         that, if the Deposit is not paid prior to such time, then Vendor may
         terminate this Agreement without any further liability by the parties
         hereunder by written notice to Purchaser at any time prior to the
         payment of the Deposit.  The parties hereby confirm their agreement
         that the Deposit and interest thereon represent a fair, reasonable and
         genuine assessment of the damages Vendor would suffer or incur solely
         by reason of the failure or refusal of Purchaser to complete the
         Closing in breach of the provisions of this Agreement.  In this regard
         it is agreed by the parties that a forfeiture of the Deposit and
         interest thereon to Vendor in such circumstances shall represent
         liquidated damages only and not a penalty and shall constitute a full
         and complete discharge of Purchaser's obligations to Vendor under this
         Agreement.  The Deposit and interest thereon shall be paid on the
         following basis:

                 (a)      if Closing occurs, Vendor's Solicitors shall hold the
                          Deposit in escrow pursuant to the terms of Subclause
                          3.5 and shall credit interest which has accrued on
                          the Deposit up to the Effective Time to Purchaser;

                 (b)      if Closing does not occur due solely to the failure
                          or refusal of Purchaser to complete the Closing in
                          breach of the provisions of this Agreement, the
                          Deposit plus interest which has accrued thereon shall
                          be paid by Vendor's Solicitors to Vendor;  and

                 (c)      if this Agreement is terminated without the
                          occurrence of the Closing under any other
                          circumstances, the Deposit plus interest which has
                          accrued thereon shall be promptly paid to Purchaser.

                 In the event Closing does not occur, a party entitled to be
                 paid the Deposit or interest under this Subclause 3.1 shall
                 issue a notice of entitlement in writing simultaneously to the
                 other party and Vendor's Solicitors.  Vendor's Solicitors
                 shall pay the Deposit and interest as directed by such notice
                 unless within 24 hours of receipt thereof by Vendor's
                 Solicitors the other party reasonably objects in good faith to
                 the payment by notice of objection in writing simultaneously
                 to Vendor's Solicitors and the party giving the notice of
                 entitlement.  In the event Vendor's Solicitors receive a
                 notice of objection or do not, within a reasonable time





<PAGE>   18
                                       15

         after it appears Closing will not occur, receive a notice of
         entitlement from either party, Vendor's Solicitors shall pay the
         Deposit and interest thereon into the Court of Queen's Bench in
         Calgary, Alberta where the return or release of such monies will be as
         determined or approved by such Court.

         3.2     Purchase Price:

                 (a)      Subject to adjustment as provided for in Subclause
                          3.4 the purchase price to be paid by Purchaser to
                          Vendor for the Shares and Note shall be the sum of
                          $251,399,325.00 plus the Working Capital Estimate
                          plus the Total Capital Estimate plus the EBOC Value;

                 (b)      The Purchase Price prior to the adjustments described
                          in Subclause 3.2(a) shall be allocated on the
                          following basis:

<TABLE>
                          <S>                      <C>
                          Note:                    $ 85,154,131.00
                          Preferred Shares:        $ 55,000,000.00
                          Common Shares:           $111,245,194.00
                                                   ===============

                                  Total:           $251,399,325.00
</TABLE>

                 (c)      Any adjustments to the Purchase Price pursuant to
                          Clause 3 or Clause 7 shall be made by an adjustment
                          to the Common Share value allocation;

                 (d)      If Closing occurs after the Effective Time, in
                          addition to the Purchase Price, Purchaser shall pay
                          to the Vendor interest calculated at the Interest
                          Rate on the Purchase Price, from and including
                          December 31, 1993 up to but excluding the date on
                          which Closing occurs; and

                 (e)      If Closing occurs after the Effective Time, the
                          parties will deduct the Transitional Costs from the
                          total of the Purchase Price plus the interest accrued
                          thereon pursuant to Subclause 3.2(d).

         3.3     Payment:  The Purchase Price as adjusted, less the Deposit,
                 shall be paid to the Vendor by or on behalf of Purchaser at
                 the Closing Place at the Closing Time.

         3.4     Closing Adjustment:  At Closing, if an adjustment is required
                 under Subclause 7.3 and the amount of such adjustment has been
                 determined prior to Closing in





<PAGE>   19
                                       16

         accordance with Subclause 7.4, the Purchase Price shall be reduced by
         the amount of the value of the Title Deficiencies (determined in
         accordance with Subclause 7.4).

         3.5     Escrow Fund:  In the event Closing occurs, Vendor's Solicitors
                 shall hold the Deposit in trust for Vendor in an interest
                 bearing trust account pending the earlier of:  (i) the
                 completion of the post-Closing adjustments referred to in
                 Subclause 3.7;  and (ii) the date which is 91 days immediately
                 following the Closing Time; whereupon the Deposit or such
                 amount thereof which has not been paid out in accordance
                 herewith, plus interest accruing thereon after the Effective
                 Time, shall be paid to the Vendor; and interest from the date
                 hereof to and including the Effective Time shall be paid to
                 Purchaser.

         3.6     Working Capital and Total Capital Estimates:

                 (a)      Within 90 days following the Closing Time, or as soon
                          thereafter as possible, the Vendor shall cause, at
                          the expense of Vendor, the Auditors to prepare and
                          deliver to Purchaser the Closing Financial Statements
                          for Novalta as of the Effective Time, which financial
                          statements shall include a statement setting forth
                          the difference between the Working Capital Estimate
                          and the Working Capital and the difference between
                          the Total Capital Estimate and the Total Capital.
                          The Auditors will permit KPMG Peat Marwick ("KPMG")
                          full participation in the preparation of the Closing
                          Financial Statements and access to the financial
                          statements, working papers and supporting documents
                          involved in the preparation of the Closing Financial
                          Statements.  Any costs and expenses related to KPMG's
                          participation in the preparation of such financial
                          statements shall be borne by Purchaser.

                 (b)      As soon as practicable within 30 days after
                          Purchaser's receipt of the proposed Closing Financial
                          Statements, Purchaser shall deliver to Vendor a
                          written report containing any changes that Purchaser
                          proposes to be made to such proposed Closing
                          Financial Statements.  The parties shall undertake in
                          good faith to agree on the Closing Financial
                          Statements no later than 180 days after the Closing
                          Time; provided, however, if Purchaser and Vendor
                          shall be unable to agree on the Closing





<PAGE>   20
                                       17

                          Financial Statements within such 180-day period, the 
                          public accounting firm of Arthur Andersen & Co., or 
                          such other nationally recognized public accounting 
                          firm mutually acceptable to Purchaser and Vendor, 
                          shall be engaged to make its determination of the 
                          amount in dispite (and only such amount).  Each 
                          party shall bear and pay one-half of th fees and 
                          other costs charged by such accounting firm.

                 (c)      If any accounting firm is engaged as provided in
                          Subclause 3.6(e), Vendor and Purchaser agree to
                          provide such accounting firm with all books, records
                          and other information relevant to the determination
                          of the amount in dispute.  Such accounting firm shall
                          be instructed to use a materiality standard as such
                          firm may determine to be reasonable under the
                          circumstances, in light of the cost to be incurred
                          and the amount in issue.  Such accounting firm shall
                          be instructed to make such calculations as soon as
                          practicable.  The final determination of any of the
                          Closing Financial Statements (including, without
                          limitation, the Working Capital and Total Capital)
                          pursuant to this Subclause 3.6(c) shall be binding on
                          the parties hereto.

                 (d)      If the Working Capital Estimate is greater than the
                          Working Capital then the difference shall be a credit
                          in favour of Purchaser (the "Purchaser's Working
                          Capital Credit").  If the Working Capital Estimate is
                          less than the Working Capital then the difference
                          shall be a credit in favour of Vendor (the "Vendor's
                          Working Capital Credit").  The amount of the
                          Purchaser's Working Capital Credit, if any, shall be
                          adjusted in accordance with Subclause 3.7.  The
                          amount of the Vendor's Working Capital Credit, if
                          any, shall be adjusted in accordance with Subclause
                          3.8.

                 (e)      If the Total Capital Estimate is greater than the
                          Total Capital then the difference shall be a credit
                          in favour of Purchaser (the "Purchaser's Total
                          Capital Credit").  If the Total Capital Estimate is
                          less than the Total Capital the difference shall be a
                          credit in favour of Vendor (the "Vendor's Total
                          Capital Credit").  The amount of Purchaser's Total
                          Capital Credit, if any, shall be adjusted in
                          accordance with, Subclause 3.7.  The amount of the





<PAGE>   21
                                       18

         Vendor's Total Capital Credit, if any, shall be adjusted in accordance
with Subclause 3.8.

         3.7     Post-Closing Adjustment in Favour of Purchaser:  As soon as
                 reasonably practical following Closing and in any event prior
                 to the date which is 90 days immediately following the Closing
                 Time with respect to Subclauses 3.7(a) and 3.7(b) and 180 days
                 immediately following the Closing Time with respect to
                 Subclause 3.7(c), Purchaser and Vendor shall make the
                 following post-Closing adjustments:

                 (a)      if an adjustment is required under Subclause 7.7 in
                          respect of Title Deficiencies and such adjustment has
                          not been made at Closing in accordance with Subclause
                          3.4, Vendor's Solicitors shall pay from the Deposit
                          to Purchaser, the amount determined in accordance
                          with Subclause 7.4 to be the value of the Title
                          Deficiencies; and

                 (b)      if an adjustment is required in favour of Purchaser
                          under Subclause 3.6 in respect of a Working Capital
                          and/or Total Capital deficiency, the Vendor's
                          Solicitors shall pay from the Deposit to Purchaser,
                          the amount of the Purchaser's Working Capital Credit
                          and/or Total Capital Credit, if any.

                 (c)      if an adjustment is required under Subclause 7.6 in
                          respect of Title Deficiencies, Vendors' Solicitors
                          shall pay to the Purchaser from the funds currently
                          held pursuant to Subclause 7.5, the amount determined
                          in accordance with Subclause 7.7 to be the value of
                          the remaining Title Deficiencies.

         3.8     Post-Closing Adjustment in Favour of Vendor:  As soon as
                 reasonably practical following Closing and in any event prior
                 to the date which is 90 days immediately following the Closing
                 Time, Purchaser and Vendor shall make the following
                 post-Closing adjustments:

                 (a)      if an adjustment is required in favour of Vendor
                          under Subclause 3.6(d) in respect of a Working
                          Capital excess, Purchaser shall pay to Vendor the
                          amount of the Vendor's Working Capital Credit, if
                          any; and

                 (b)      if an adjustment is required in favour of Vendor
                          under Subclause 3.6(e) in respect of a Total





<PAGE>   22
                                       19

         Capital excess, Purchaser shall pay to Vendor the amount equal to the
Vendor's Total Capital Credit.

         3.9     Post-Closing Adjustment in Favour of Both Purchaser and
                 Vendor:  In the event an adjustment in favour of Purchaser is
                 required pursuant to Subclause 3.7 and an adjustment is
                 required in favour of Vendor pursuant to Subclause 3.8 the
                 Vendors' Solicitors shall deduct from any payment to be made
                 hereunder to one of the parties the amount of such adjustment
                 to be made in favour of the other party.  The party required
                 to make a payment pursuant to this Subclause 3.9 shall pay the
                 difference between the amounts calculated under Subclauses 3.7
                 and 3.8 to the other party.

4.       CLOSING

         4.1     Time and Location:  Closing shall take place at the Closing
                 Place at the Closing Time.

         4.2     Vendor Documentation:  In addition to any other documentation
                 specifically or impliedly contemplated elsewhere in this
                 Agreement, Vendor shall deliver or cause to be delivered the
                 following documents (fully authorized and executed, where
                 applicable, by all appropriate parties except Purchaser) to
                 Purchaser or Purchaser's Solicitors at Closing:

                 (a)      Closing Certificate:  A certificate effective as of
                          the Closing Time executed by Vendor certifying that
                          all of Vendor's representations, warranties and
                          covenants contained in Subclauses 9(A) and (B) and
                          Appendix "J" are true and correct or complied with in
                          all material respects at and as of the Effective Time
                          and the Closing Time;

                 (b)      Certified Resolutions of Novalta:  Certified
                          resolutions of the directors of Novalta approving the
                          transfer of the Shares to Purchaser, the cancellation
                          of the existing share certificates and the issuance
                          of new share certificates in favour of Purchaser for
                          the Shares;

                 (c)      Endorsed Share Certificates:  The share certificates
                          presently issued in the name of Vendor for the Shares
                          endorsed for transfer to Purchaser;

                 (d)      New Share Certificates:  New share certificates for
                          the Shares;





<PAGE>   23
                                       20


                 (e)      Note:  A written acknowledgement of Novalta
                          evidencing sale of the Note to Purchaser;

                 (f)      Minute Books and Seals:  All minute books and the
                          corporate seals or comparable partnership documents
                          for Novalta, Amber Valley Energy Corporation and
                          Novalta Rosebank South Limited Partnership;

                 (g)      Resignations:  Resignations of all directors (or
                          members of any partnership governing body) of Novalta
                          and Amber Valley Energy Corporation and Novalta
                          Rosebank South Limited Partnership and of all
                          officers of either corporation who are not employees
                          of such corporation as well as resignations of any
                          directors or officers of EBOC that are affiliated
                          with or designated by Novalta and who will not
                          continue as employees of Novalta immediately
                          following the Closing Time;

                 (h)      Releases:  General releases in favour of Novalta from
                          Vendor and the resigning directors, governing body
                          members and officers of Novalta, Amber Valley Energy
                          Corporation, Novalta Rosebank South Limited
                          Partnership and EBOC;

                 (i)      Updated Land Schedule:  An updated Land Schedule, it
                          being understood that the foregoing shall not
                          contain any material changes to the version in
                          Appendix "A"; provided however that any such updated
                          Land Schedule shall not have the effect of modifying
                          any representations of the Vendor;

                 (j)      Opinion of Vendor's Solicitors:  An opinion from
                          Vendors' Solicitors in favour of Purchaser, in a form
                          mutually agreeable to the parties;

                 (k)      Release of Bank Security:  Releases of the Bank
                          Security, and an enforceable undertaking to provide
                          registerable discharges where appropriate of all such
                          Bank Security within a reasonable period of time
                          after Closing; and

                 (l)      Employee Matters:  Evidence satisfactory to Purchaser
                          that all staff salaries, remuneration, benefits,
                          deductions, contributions, holiday, flex day or
                          vacation pay and worker's compensation payments for
                          all the Novalta employees up to the time of Closing
                          have been fully accrued or paid and satisfied.





<PAGE>   24
                                       21


         4.3     Purchaser Documentation:  In addition to paying the Purchase
                 Price to Vendor in the manner contemplated by Subclause 3.3,
                 Purchaser shall deliver or cause to be delivered the following
                 documents (fully authorized and executed, where applicable, by
                 all appropriate parties except Vendor and Novalta) to Vendor
                 or Vendor's Solicitors at Closing:

                 (a)      Closing Certificate:  A certificate effective as of
                          the Closing Time executed by Purchaser certifying
                          that all of Purchaser's representations, warranties
                          and covenants contained in Subclause 9(C) are true
                          and correct or complied with in all material respects
                          at and as of the Effective Time and the Closing Time;

                 (b)      Releases:  General releases from Purchaser and
                          Novalta (executed by post-Closing officers of
                          Novalta) in favour of the resigning directors,
                          governing body members and officers referred to in
                          Subclause 4.2(g);

                 (c)      Regulatory Approvals:  All applicable regulatory
                          approvals including, without limitation, written
                          approvals pursuant to the Investment Canada Act
                          (Canada) and the Competition Act (Canada); and

                 (d)      Opinion of Purchaser's Solicitors:  An opinion from
                          Purchaser's Solicitors in favour of Vendor, in  a
                          form mutually agreeable to the parties.

         4.4     Vendor's Closing Conditions:  The obligation of Vendor to
                 complete the transactions contemplated herein is subject to
                 the satisfaction at or prior to the Closing Time of the
                 following conditions precedent:

                 (a)      Purchaser's Representations True:  All of Purchaser's
                          representations, warranties and covenants contained
                          in Subclause 9(C) shall be true and correct or
                          complied with in all material respects at and as of
                          the Effective Time and the Closing Time;

                 (b)      Performance by Purchaser:  Purchaser shall have
                          performed and satisfied in all material respects all
                          covenants required herein to be performed and
                          satisfied by it at or prior to the Closing Time
                          including, without limitation, the tendering of the





<PAGE>   25
                                       22

                          Purchase Price and all of the items required to be 
                          delivered pursuant to Subclause 4.3 above; and

                 (c)      Regulatory Approvals:  All applicable regulatory
                          approvals (including, without limitation, any
                          approvals required pursuant to the Investment Canada
                          Act (Canada) and the Competition Act (Canada)) shall
                          have been obtained.

                 The foregoing conditions precedent shall be for the sole
                 benefit of Vendor and may, without prejudice to any of
                 Vendor's other rights hereunder (including, without
                 limitation, reliance upon or enforcement of any of Purchaser's
                 representations, warranties and covenants set forth in
                 Subclause 9(C) which are preserved and deal with or are
                 similar to the condition waived), be waived in writing by
                 Vendor, in whole or in part, at any time.  In case any of the
                 said conditions precedent shall not be complied with, or
                 waived by Vendor, at or before the Closing Time, Vendor may
                 rescind or terminate this Agreement by written notice to
                 Purchaser.  Upon Closing, all of the foregoing conditions
                 precedent shall be deemed to have been satisfied or waived as
                 closing conditions.

         4.5     Purchaser's Closing Conditions:  The obligation of Purchaser
                 to complete the transactions contemplated herein is subject to
                 the satisfaction at or prior to the Closing Time of the
                 following conditions precedent:

                 (a)      Vendor's Representations True:  All of Vendor's
                          representations, warranties and covenants contained
                          in Subclauses 9(A) and (B) and Appendix "J" shall be
                          true and correct or complied with in all material
                          respects at and as of the Effective Time and the
                          Closing Time;

                 (b)      Performance by Vendor:  Vendor shall have performed
                          and satisfied in all material respects all covenants
                          required herein to be performed and satisfied by it
                          at or prior to the Closing Time including, without
                          limitation, the tendering of all of the items
                          required to be delivered pursuant to Subclause 4.2
                          above;

                 (c)      No Damage:  There shall have been no substantial
                          physical damage to or alteration in or to any of the
                          Assets between the date hereof and the Closing Time,
                          net of insurance proceeds, which materially and
                          adversely affects the value of Novalta; and





<PAGE>   26
                                       23


                 (d)      Regulatory Approvals:  All applicable regulatory
                          approvals (including, without limitation, any
                          approvals required pursuant to the Investment Canada
                          Act (Canada) and the Competition Act (Canada)) shall
                          have been obtained.

                 The foregoing conditions precedent shall be for the sole
                 benefit of Purchaser and may, without prejudice to any of
                 Purchaser's other rights hereunder (including, without
                 limitation, reliance upon or enforcement of any of Vendor's
                 representations, warranties and covenants set forth in
                 Subclauses 9(A) and (B) and Appendix "J" which are preserved
                 and deal with or are similar to the condition waived), be
                 waived in writing by Purchaser, in whole or in part, at any
                 time.  In case any of the said conditions precedent shall not
                 be complied with, or waived by Purchaser, at or before the
                 Closing Time, Purchaser may rescind or terminate this
                 Agreement by written notice to Vendor.  Upon Closing, all of
                 the foregoing conditions precedent shall be deemed to have
                 been satisfied or waived as closing conditions.

         4.6     Best Efforts:  Each party hereto agrees with the other to use
                 its best efforts until Closing to take all actions necessary
                 to ensure that the conditions precedent outlined in Subclauses
                 4.4 and 4.5 above are satisfied at or before the Closing Time.

5.       EXAMINATION OF RECORDS AND INFORMATION

         5.1     Access:  From the date hereof up to and including the Closing
                 Time, subject to receiving any necessary consents from third
                 parties (which consent Vendor shall use its best efforts to
                 obtain expeditiously), Vendor shall permit, and shall cause
                 its Affiliates and Novalta to permit, Purchaser and
                 Purchaser's Representatives to have reasonable access to the
                 facilities, properties, personnel, books and records of or
                 relating to Novalta and its subsidiaries, including without
                 limitation making the following records and information (to
                 the extent the same are within the possession or control of
                 Vendor or Novalta or their Affiliates) available to Purchaser
                 and Purchaser's Representatives at Novalta's offices during
                 Novalta's normal business hours to conduct such inspection as
                 Purchaser reasonably requires:

                 (a)      Title:  All leases, agreements and other documents
                          and correspondence (including the Howard Opinions)
                          affecting Novalta's title to the Assets;





<PAGE>   27
                                       24


                 (b)      Corporate, Accounting and Financial:  All corporate,
                          accounting and financial records (including, without
                          limitation, insurance policies and acquisition
                          agreements) of Novalta, its subsidiaries and EBOC;

                 (c)      Technical and Operating:  All seismic, geological,
                          geophysical and similar data, interpretations and
                          agreements and all operational records (including,
                          without limitation, all well and production records)
                          relating to the Assets; and

                 (d)      Environmental Information:  All information,
                          including directives, orders and correspondence and
                          any audits, assessments or reviews relating to
                          environmental matters affecting Novalta or the
                          Assets.

                 In the event any of the foregoing records and information are
                 not within the possession or control of Vendor or Novalta and
                 Vendor or Novalta can only arrange for Purchaser or
                 Purchaser's Representatives to inspect the same at other than
                 Novalta's premises, then Purchaser or Purchaser's
                 Representatives may inspect such records and information
                 wherever the same are located.

         5.2     Confidentiality:  The obligation of the Purchaser with respect
                 to the confidentiality of all information relating to Novalta
                 shall be governed by the Confidentiality Agreement which is
                 incorporated herein by reference as though set forth in its
                 entirety.

6.       TITLE TO REVIEWED LANDS AND ENVIRONMENTAL REVIEW

         6.1     Howard Opinions:  Purchaser acknowledges that it has reviewed
                 the Howard Opinions in respect of the Reviewed Lands and is
                 satisfied with the state of title to such lands as of the
                 effective dates stated in the Howard Opinions.  Upon Closing,
                 Vendor shall cause the Howard Opinions to be readdressed to
                 Purchaser.

         6.2     Arthur D. Little Report:  Purchaser acknowledges that it has
                 reviewed the Arthur D. Little Report in respect of the
                 Environmentally Reviewed Lands and agrees that Novalta shall
                 remain liable for all Environmental Liabilities described in
                 such report.  Purchaser further agrees that, subject to the
                 provisions of Subclauses 9.37 and 9(H), Novalta shall remain
                 liable for all





<PAGE>   28
                                       25

         Environmental Liabilities with respect to all Lands which were not the
         subject of the Arthur D. Little Report.

7.       TITLE DEFICIENCIES

         7.1     Identification of Title Deficiencies:  Purchaser may from time
                 to time but no later than 20 Business Days prior to Closing
                 give written notice to Vendor describing in reasonable detail
                 all defects and irregularities relating to the Petroleum and
                 Natural Gas Rights, excluding all interests of Novalta in the
                 Reviewed Lands, that in the reasonable opinion of Purchaser,
                 materially adversely affect the title of Novalta to any
                 portion of the Petroleum and Natural Gas Rights, excluding all
                 interests of Novalta in Reviewed Lands (collectively the
                 "Title Deficiencies") and a reasonable estimate by Purchaser
                 of the aggregate value of such Title Deficiencies.

         7.2     Reviewed Lands:  For greater certainty Purchaser shall not be
                 entitled to give Vendor notice of, or request an adjustment to
                 the Purchase Price in respect of, any deficiencies or
                 irregularities relating to Novalta's title to the Reviewed
                 Lands.

         7.3     Adjustment Limitation:  If the aggregate value of Title
                 Deficiencies (determined in accordance with Subclause 7.4)
                 exceeds $500,000.00 then the Purchase Price shall be reduced
                 by the amount that the value of the Title Deficiencies
                 (determined in accordance with Subclause 7.4) exceeds
                 $500,000.00.  If the aggregate value of the Title Deficiencies
                 (determined in accordance with Subclause 7.4) does not exceed
                 $500,000.00  then there shall be no adjustment to the Purchase
                 Price.

         7.4     Value of Title Deficiencies:  The value of the Title
                 Deficiencies shall be determined as follows:

                 (a)              if Vendor agrees with Purchaser's estimate
                                  set forth in the notice referred to in
                                  Subclause 7.1 in respect of Title
                                  Deficiencies, Vendor shall deliver to
                                  Purchaser written notice of Vendor's
                                  agreement to Purchaser's estimate of the
                                  value of Title Deficiencies, in which case
                                  the amount so agreed to shall be the value of
                                  such Title Deficiencies for all purposes of
                                  this Agreement (collectively, the "Agreed
                                  Title Deficiencies");





<PAGE>   29
                                       26

                 (b)              if Vendor does not agree with Purchaser's
                                  estimate set forth in the notice referred to
                                  in Subclause 7.1 in respect of Title
                                  Deficiencies, Vendor shall provide written
                                  notice of such disagreement to Purchaser no
                                  later than 15 Business Days prior to Closing.

                 (c)              if after receipt of such notice Purchaser
                                  contends that the Title Deficiencies which
                                  remain (together with the value of the Agreed
                                  Title Deficiencies), cumulatively diminish
                                  the value of the Resource Assets by an amount
                                  in excess of $500,000.00, the Purchaser may
                                  elect by written notice to Vendor no later
                                  than 4:30 p.m., Calgary time, on the tenth
                                  Business Day prior to the Closing Time to:

                                  (i)     Waive:  waive the uncured
                                          Title Deficiencies (other
                                          than the Agreed Title
                                          Deficiencies); or

                                  (iii)   Price Reduction:  negotiate a
                                          reduction in the Purchase Price.

                 Failure by Purchaser to elect or to elect within the time
                 frame set out in this Subclause 7.4(b) shall be irrefutably
                 and conclusively deemed to be an election to waive all uncured
                 Title Deficiencies.

         7.5     If Purchaser elects to negotiate a reduction in the Purchase
                 Price and no agreement is reached at or before 4:30 p.m.,
                 Calgary Time, on the fifth Business Day immediately preceding
                 the Closing Time and Purchaser contends that the uncured Title
                 Deficiencies cumulatively diminish the value of the affected
                 Resource Assets, other than the Reviewed Lands, by an amount
                 in excess of $500,000.00 (less the amount of the Agreed Title
                 Deficiencies), the parties agree to arbitrate the proposed
                 Purchase Price reduction in accordance with the Arbitration
                 Procedure and, if the Closing Time arrives before the
                 arbitration decision is issued, proceed with Closing with
                 Purchaser deducting from the Purchase Price otherwise payable
                 at Closing the full amount of the reduction requested and
                 depositing the same with the Vendor's Solicitors.

         7.6     Ability to Remedy before Closing:  Vendor shall be entitled to
                 remedy or cure any or all Title Deficiencies prior to Closing.
                 If a Title Deficiency has been





<PAGE>   30
                                       27

         remedied or cured prior to Closing it shall cease to be a Title
         Deficiency for all purposes of this Agreement, including without
         limitation, for purposes of adjustment of the Purchase Price and
         calculation of the limit for adjustment provided for in Subclause 7.3.

         7.7     Ability to Remedy after Arbitration:  If the parties have
                 arbitrated a Purchase Price reduction with respect to uncured
                 Title Deficiencies pursuant to Subclause 7.5 and the
                 Arbitrator's decision results in a reduction in the value of
                 the Resource Assets in excess of $500,000.00, then, on the
                 written notice of Vendor to Purchaser within ten Business Days
                 of the date of delivery of the Arbitrator's decision to the
                 Vendor, Vendor shall have 180 days from the Closing Time to
                 remedy such Title Deficiencies.  If a Title Deficiency is
                 remedied within such period it shall cease to be a Title
                 Deficiency for all purposes of this Agreement and the Purchase
                 Price reduction set out in the Arbitrator's decision shall be
                 adjusted accordingly and the Vendor's Solicitors shall
                 promptly pay the appropriate amount to Vendor from the funds
                 paid to Vendor's Solicitors pursuant to Subclause 7.5.  If
                 Vendor does not provide Purchase with notice as contemplated
                 hereto then Vendor's Solicitors shall promptly pay to
                 Purchaser all the funds paid to Vendor's Solicitors pursuant
                 to Subclause 7.5.

         7.8     Co-operation:  Purchaser shall co-operate with respect to any
                 attempt by Vendor to remedy any Title Deficiency and shall
                 allow Vendor and Vendor's Representative with reasonable
                 access during normal business hours to all relevant records
                 relating to the Resource Assets.

8.       INTERIM PERIOD

         8.1     Interim Operations:  Subsequent to the date of execution of
                 this Agreement, Novalta shall not enter into any obligations
                 or commitments with respect to the Resource Assets for which
                 Novalta's share of costs is in excess of either,

                 (a)      $25,000.00 for any single item or related series of
                          items not required to be spent pursuant to an
                          operating agreement or,

                 (b)      the expenditure limit established by any applicable
                          operating agreement below which an approval for
                          expenditure is not required,





<PAGE>   31
                                       28

                 without the prior written consent of Purchaser (which consent
                 shall not be unreasonably withheld) except as may be
                 reasonably necessary to protect, and insure life and safety or
                 to preserve the Resource Assets or title to the Resource
                 Assets.  Novalta shall not, without the prior written consent
                 of Purchaser, propose, consent to or initiate the exercise of
                 any right or option relative to or arising as a result of the
                 ownership of the Resource Assets or propose or initiate any
                 operations in respect thereof any of which have not been
                 commenced or committed to as of the date of execution of this
                 Agreement except that Novalta may propose or initiate any
                 operations in respect of the Resource Assets for, and may
                 propose or indicate the exercise of any right or option
                 relative to, the preservation of any of the Resource Assets.

         8.2     In addition, neither Novalta nor any of its subsidiaries
                 shall, without the prior written consent of Purchaser except
                 as disclosed in Schedule 8.2,

                 (a)      issue, sell, encumber or agree to issue, sell or
                          encumber any shares, rights, options, warrants or
                          other securities or incur or amend any long-term
                          debt;

                 (b)      purchase, cancel, retire, redeem or otherwise acquire
                          any outstanding shares, rights, options, warrants or
                          other securities;

                 (c)      alter salary arrangements, employee benefits or other
                          compensation arrangements from those which are in
                          effect on the date hereof and disclosed on Schedule
                          8.2(c);

                 (d)      change, amend or modify its charter documents or 
                          by-laws;

                 (e)      declare or pay any dividends or make any other
                          distributions;

                 (f)      sell, pledge, encumber or otherwise dispose of any
                          Assets; provided, however, that Novalta may sell in a
                          public offering all or a portion of its shares of
                          EBOC prior to the Effective Time, it being
                          acknowledged that the net proceeds of any such sale
                          shall be deemed to be included in the Working
                          Capital;





<PAGE>   32
                                       29

                 (g)      enter into, amend or modify any Material Contracts,
                          or agree to do so; and

                 (h)      enter into, amend or modify any agreement,
                          arrangement or understanding with any Affiliate of
                          Vendor, or agree to do so except as set forth on
                          Schedule 8.2(h).

         8.3     In addition, Vendor and Novalta shall not, without the prior
                 written consent of Purchaser:

                 (a)      alter any Plan (other than any amendment required by
                          applicable laws and regulations);

                 (b)      take any action or omit to have taken any action with
                          respect to any Plan that could result in the
                          liability of Novalta to any person or the imposition
                          of any penalty upon Novalta or which could adversely
                          affect the registration of such Plan; or

                 (c)      take any action or omit to have taken any action that
                          would have the effect of increasing the termination
                          obligations of Novalta to the Novalta employees in
                          excess of those obligations set forth in Appendix H
                          as of the date of this Agreement.

9.       REPRESENTATIONS AND WARRANTIES

(A)      Vendor:  Vendor represents, warrants and covenants to and with
         Purchaser as follows:

         9.1       Corporate Standing:  Vendor is, and at the Closing Time
                   shall be, a corporation duly incorporated, organized and
                   validly existing under the laws of Alberta;

         9.2       Requisite Authority:  Vendor has all requisite power and
                   authority to enter into this Agreement and to perform its
                   obligations hereunder and the execution and delivery of this
                   Agreement and the consummation of the transactions
                   contemplated herein have been duly authorized by all
                   necessary corporate action on the part of Vendor;

         9.3       No Conflicts:  The execution and delivery of this Agreement
                   and each and every agreement and instrument to be executed
                   and delivered hereunder and the consummation of the
                   transactions contemplated herein and therein will not:





<PAGE>   33
                                       30


                   (a)       violate or result in a breach or default of,
                             require any consent under, be in conflict with or
                             accelerate or permit the acceleration of the
                             performance of the provisions of any agreement,
                             license, permit, franchise or other instrument to
                             which Vendor is a party or by which it is bound or
                             to which the Assets are subject;

                   (b)       violate or conflict with any judgment, decree,
                             injunction, order, law, statute, rule or
                             regulation applicable to Vendor or Vendor's
                             constating documents or bylaws;

                   (c)       result in the loss of any licence, franchise or
                             permit or give a right of termination to any party
                             under any agreement or instrument; or

                   (d)       give rise to any rights of first refusal or any
                             other preemptive, preferential or similar rights
                             to purchase any of the Shares, Note or Assets;

         9.4       Execution and Delivery:  This Agreement has been duly
                   executed and delivered by Vendor and all other documents
                   required to be executed and delivered by Vendor pursuant
                   hereto will be duly executed and delivered by Vendor and
                   this Agreement does, and such documents will, constitute
                   legal, valid and binding obligations of Vendor enforceable
                   in accordance with their respective terms;

         9.5       No Lawsuits or Claims:  Except as noted in Appendix "D",
                   Vendor is not party to any action, suit or other legal,
                   administrative or arbitration proceeding or government
                   investigation, actual or threatened, which has or could have
                   a material adverse affect on the purchase or sale of the
                   Shares and the Note or on the business, assets, financial
                   condition or operations of Novalta ("Material Adverse
                   Effect") and there is no particular circumstance, matter or
                   thing known to Vendor which could reasonably be anticipated
                   to give rise to any such action, suit or other legal,
                   administrative or arbitration proceeding or government
                   investigation the result of which would have a Material
                   Adverse Effect;

         9.6       Title of Vendor to the Shares:  Except for the Bank
                   Security, Vendor has good, marketable, recorded and
                   beneficial title to and ownership of the Shares, each of the
                   Shares is fully paid and non-assessable and free





<PAGE>   34
                                       31

         and clear of all liens, mortgages, charges, security interests,
         pledges, equities, encumbrances, demands and adverse claims whatsoever
         and no entity other than Purchaser has any agreement, option, right,
         warrant or privilege to purchase or otherwise acquire any of the
         Shares;

         9.7       Note Not Encumbered:  Except for the Bank Security, the Note
                   is free and clear of all liens, mortgages, charges, security
                   interests, pledges, equities, encumbrances, demands and
                   adverse claims;

         9.8       (Intentionally omitted.)

(B)      Novalta's Assets and Shares:  Vendor further represents, warrants and
         covenants to and with Purchaser as follows:

         9.9       Corporate Standing: Novalta is, and at the Closing Time
                   shall continue to be, a corporation duly incorporated,
                   organized and validly existing under the laws of Alberta,
                   being its jurisdiction of incorporation, and duly registered
                   under the laws of those jurisdictions in which Novalta is
                   required to be registered;

         9.10      Requisite Authority:  Novalta has all requisite power and
                   authority to comply with the provisions of this Agreement
                   and to own the Assets and its compliance with the provisions
                   of this Agreement has been duly authorized by all necessary
                   corporate action on the part of Novalta;

         9.11      No Conflicts:  The execution and delivery of this Agreement
                   and each and every agreement and instrument to be executed
                   and delivered hereunder and the consummation of the
                   transactions contemplated herein and therein will not:

                   (a)       violate or result in a breach or default of,
                             require any consent under, be in conflict with or
                             accelerate or permit the acceleration of the
                             performance of the provisions of any agreement,
                             license, permit, franchise or other instrument to
                             which Novalta is a party or by which it is bound
                             or to which the Assets are subject;

                   (b)       violate or conflict with any judgment, decree,
                             injunction, order, law, statute, rule or
                             regulation applicable to Novalta or Novalta's
                             constating documents or bylaws;





<PAGE>   35
                                       32


                   (c)       result in the creation of any lien, charge,
                             security interest or other encumbrance upon any of
                             the Assets or to which Novalta will be subject;

                   (d)       result in the loss of any licence, franchise or
                             permit affecting the Resource Assets or give a
                             right of termination to any party under any
                             agreement or instrument affecting the Resource
                             Assets; or

                   (e)       give rise to any rights of first refusal or any
                             other preemptive, preferential or similar rights
                             to purchase any of the Assets;

         9.12      Execution and Delivery:  All documents required to be
                   executed and delivered by Novalta pursuant hereto will be
                   duly executed and delivered by Novalta and will constitute
                   legal, valid and binding obligations of Novalta enforceable
                   in accordance with their respective terms;

         9.13      1993 AFE's:  Set forth in Appendix "C" is a list of all
                   signed authorizations for expenditure which have been
                   executed by Novalta subsequent to January 1, 1993 up to the
                   date hereof with respect to the Resource Assets and which
                   Appendix "C" shows Novalta's share of the respective amounts
                   of such authorizations for expenditure, Novalta's share of
                   the amounts expended and Novalta's share of amounts which
                   have been paid or accrued;

         9.14      No Changes:  The business and affairs of Novalta will be
                   carried on from the date hereof to Closing in the ordinary
                   and normal course except as expressly provided by this
                   Agreement;

         9.15      Employees:  Except as set forth in Schedule 9.15 (which
                   Schedule also contains a list of all of Novalta's
                   employees):

                   (a)       Novalta is not a party to any written contracts of
                             employment, service agreements, management
                             agreements, collective bargaining agreements or
                             employee association agreements;

                   (b)       Novalta has not conducted and is not now
                             conducting any negotiations with any labour union
                             or employee association;





<PAGE>   36
                                       33


                   (c)       Novalta has no agreements, policies or
                             understandings with the Novalta employees with
                             respect to increases in compensation;

                   (d)       Novalta has not now and will not have at the time
                             of Closing, any outstanding orders, investigations
                             or prosecutions under the Occupational Health and
                             Safety Act or regulations; and

                   (e)       Novalta is up-to-date in making unemployment
                             insurance payments, payments pursuant to the
                             Canadian Pension Plan and income tax withholding
                             payments.

         9.16      Employee Benefits:  Schedule 9.16 provides a description of
                   each Plan.  Except as set forth in Schedule 9.16:

                   (a)       Novalta does not have now nor has Novalta ever
                             participated in any employee benefit or incentive
                             plan arrangement or agreement solely with respect
                             to its officers and directors for which Novalta
                             has liability;

                   (b)       The execution and delivery of this Agreement and
                             the consummation of the transactions contemplated
                             hereby will not (i) require Novalta to make a
                             larger contribution to, or pay greater benefits
                             under, any Plan or other employee benefit or
                             incentive plan arrangement or agreement than it
                             otherwise would or (ii) create or give rise to any
                             additional vested rights or service credits under
                             any Plan or other employee benefit or incentive
                             plan arrangement or agreement other than those set
                             out in Appendix "H";

                   (c)       Novalta will not at Closing have any liabilities
                             for payment of wages, vacation pay, salaries,
                             bonuses, pensions, except as provided for in
                             Subclause 10.2, or for contributions under any
                             Plan, or other compensation, current or deferred
                             under any labour or employment contract, whether
                             written or oral which accrued up to the time of
                             Closing, other than the liability for termination
                             obligations shall remain the responsibility of
                             Novalta in Subclause 10.4, and any liabilities
                             reflected in the Financial Statements;





<PAGE>   37
                                       34

                   (d)       True, correct and complete copies of each of the
                             Plans, and related trusts, if applicable,
                             including all amendments thereto, and the most
                             recent actuarial report with respect to such Plan,
                             if any, as well as true, correct copies of
                             Novalta's employee policy manual will be made
                             available to Purchaser prior to Closing;

                   (e)       Vendor and Novalta have substantially performed
                             all obligations, whether arising by operation of
                             law or by contract, required to be performed by
                             them in connection with the Plans, and to the
                             knowledge of Vendor there have been no defaults or
                             violations by any other party to the Plans;

                   (f)       All reports and disclosures relating to the Plans
                             required to be filed with or furnished to
                             governmental agencies, Plan participants or Plan
                             beneficiaries have been filed or furnished in
                             accordance with applicable laws and regulations in
                             a timely manner;

                   (g)       Each Plan complies with applicable laws and
                             regulations, has been administered in substantial
                             compliance with its governing documents, if any,
                             and has not been operated in a way which would
                             result in the liability of Novalta to any person
                             or the imposition of any penalty upon Novalta;

                   (h)       Each Plan which is required to be registered by
                             applicable laws and regulations, has been duly
                             registered pursuant to such laws and regulations
                             and has not, to the knowledge of Vendor, been
                             operated in a way which would adversely affect the
                             registration of such Plan; and

                   (i)       Surplus monies under the pension plan, if any,
                             have not been removed from the trust fund by the
                             Vendor or its Affiliates and all contributions
                             required under such plan have been made.

         9.17      Accounts Receivable:  All accounts receivable to be recorded
                   in the Audited Closing Financial Statements will be bonafide
                   and, to the best of Vendor's and Novalta's knowledge and
                   belief (after reasonable inquiry), subject to any allowance
                   for doubtful accounts as provided for therein, collectible
                   by Novalta in a timely manner in accordance with industry
                   custom without set off or counterclaim;





<PAGE>   38
                                       35


         9.18      Books of Account and Operating Records:  The books of
                   account and other records maintained by Novalta of a
                   financial or an accounting nature are maintained in
                   accordance with GAAP and accurately reflect the financial
                   transactions of Novalta and the other records maintained by
                   Novalta relative to its operations have been maintained in
                   accordance with prudent business practices;

         9.19      No Default Under Agreements:  Other than as disclosed in the
                   Howard Opinions or the Arthur D. Little Report, (a) Novalta
                   is not in default under any agreement, document or lease to
                   which Novalta is a party or by which it is bound; (b) there
                   is no outstanding notice of cancellation or termination in
                   connection with the foregoing; (c) there does not exist any
                   event or circumstance which through the passage of time or
                   which as a result of a notice by a third party could become
                   a default by Novalta under any agreement, document or lease
                   to which it is a party or by which it is bound; and (d) each
                   agreement, document and lease to which Novalta is a party or
                   by which it is bound is in full force and effect in
                   accordance with its terms except in the case of subclauses
                   (a), (b), (c) and (d), for any such default, notice or other
                   circumstances that, individually or in the aggregate, would
                   not or could not reasonably be expected to have a Material
                   Adverse Effect;

         9.20      No Default Under Laws:  Novalta has not received any notice
                   of and, is not in any default or violation of any judgment,
                   decree, injunction, order, law, statute, rule or regulation
                   which has or could have a Material Adverse Effect;

         9.21      Finders' Fees:  Neither Vendor nor Novalta has incurred any
                   obligation or liability, contingent or otherwise, for
                   brokers' or finders' fees in respect of the within
                   transactions for which Purchaser or Novalta or any of its
                   subsidiaries will have any obligation or liability;

         9.22      No Judgments, Lawsuits or Claims:  There are no unsatisfied
                   judgments against Novalta or any consent decrees or
                   injunctions to which Novalta is subject and, except as noted
                   in Appendix "D", Novalta is not party to any action, suit or
                   other legal, administrative or arbitration proceeding or
                   government investigation, actual or threatened, which has or
                   could have a Material Adverse Effect and there is no
                   particular





<PAGE>   39
                                       36

                   circumstance, matter or thing known to Vendor or Novalta 
                   which could reasonably be anticipated to give rise to any 
                   such action, suit or other legal, administrative or 
                   arbitration proceeding or government investigation the 
                   result of which would have a Material Adverse Effect;

         9.23      Financial Statements:  The Financial Statements have been
                   prepared in accordance with GAAP and present the financial
                   position of Novalta and the results of its operations for
                   the periods therein referred to and without limiting the
                   foregoing, the Financial Statements do not contain any
                   untrue statement of a material fact and do not omit to state
                   any material fact required to be stated to make the
                   Financial Statements, as applicable, not misleading;

         9.24      Title and Quiet Enjoyment to Resource Assets: The Resource
                   Assets are free and clear of all liens, charges,
                   encumbrances and adverse claims created by, through or under
                   Novalta or Vendor except for Permitted Encumbrances and,
                   subject to the foregoing, Novalta may continue to hold and
                   enjoy the interests attributed to it in Appendix "A" for its
                   own use and benefit;

         9.25      Title to Other Assets:  Subject to Permitted Encumbrances
                   Novalta has good marketable and beneficial title to and
                   ownership of all of the Assets.  This representation and
                   warranty does not apply or extend to the Resource Assets;

         9.26      Overproduction Penalties:  To the best of Vendor's
                   knowledge, information and belief (after reasonable
                   inquiry), none of the wells located on the Lands has been
                   overproduced such that it is subject or liable to an
                   overproduction penalty;

         9.27      Change in Production Allowables:  Neither Novalta nor Vendor
                   is aware of any adverse change or proposed change in the
                   production allowables for any wells from which production of
                   Petroleum Substances is allocated to the Lands that could
                   have a Material Adverse Effect;

         9.28      Wells and Tangibles:  All wells located on the Lands have
                   been drilled and, if completed, completed, operated and
                   produced in accordance with good oil and gas field practices
                   and in compliance in all material respects with all rules
                   and regulations; provided, however, that such representation
                   is limited to the





<PAGE>   40
                                       37

                   best of Novalta's and Vendor's information and belief (after
                   reasonable inquiry) with respect to wells that are not 
                   operated by Novalta or any of its subsidiaries;

         9.29      Wells to be Abandoned:  To the best of the Vendor's
                   knowledge, information and belief (after reasonable
                   inquiry), Novalta has not agreed to and is not now obligated
                   to abandon any well operated by Novalta located on the Lands
                   which is not being abandoned and reclaimed in accordance
                   with applicable legal requirements and good oil and gas
                   field practices;

         9.30      Shares Only Issued Security:  The Shares represent the only
                   authorized or issued securities in the capital stock of
                   Novalta;

         9.31      No Rights To Acquire Unissued Securities:  There are no
                   agreements, options, rights or privileges (including,
                   without limitation, convertible securities, warrants or
                   convertible obligations of any nature) relating to or
                   providing for the purchase, subscription, allotment or
                   issuance of any securities in the capital stock of Novalta;

         9.32      Long Term Debt, Etc.:  Novalta does not have any long-term
                   debt other than the Note;

         9.33      (Intentionally omitted);

         9.34      Insurance Policies:  All of Novalta's insurance requirements
                   are covered under the insurance policies of NOVA Corporation
                   of Alberta.  All of Novalta's insurance coverage as provided
                   under NOVA Corporation of Alberta's insurance policies shall
                   be discontinued with respect to occurrences after the
                   Closing Time.  Purchaser shall be responsible for obtaining
                   all necessary insurance requirements and such insurance
                   shall be in force as of the Closing Time;

         9.35      No Other Agreement: Novalta is not a party to:

                   (a)       any agreement, indenture or other instrument which
                             contains restrictions with respect to the payment
                             of dividends or other distributions in respect of
                             its capital;

                   (b)       any financial arrangement or agreement respecting
                             or creating any indebtedness to any person, other





<PAGE>   41
                                       38

                             than the Note to Vendor reflected on the Financial 
                             Statements;

                   (c)       any advance to, or investment in, any person
                             (excluding Novalta's ownership of 4,077,316 shares
                             in EBOC) or any agreement, contract or commitment
                             relating to the making of any such advance or
                             investment, except as set forth in a customary and
                             typical provision of any operating agreement;

                   (d)       any guarantee or other contingent liability in
                             respect of any indebtedness or obligation of any
                             person (other than the endorsement of negotiable
                             instruments for collection in the ordinary course
                             of business), except as set forth in a customary
                             and typical provision of any operating agreement;

                   (e)       any management, service, consulting or other
                             similar type of contract that cannot be terminated
                             by Novalta on notice of thirty (30) days or less
                             without payment or penalty, except for those
                             entered into with Amber Valley Energy Corporation
                             and the Novalta Rosebank South Limited
                             Partnership, and those services provided by NOVA
                             Corporation of Alberta which are described on
                             Schedule 9.35(e) and will be discontinued at
                             Closing Time; or

                   (f)       any agreement, contract or commitment limiting the
                             freedom of Novalta to engage in any line of
                             business or to compete with any person, other than
                             those entered into in the ordinary course of
                             business;

         9.36      Taxes and Assessments:  All ad valorem, property,
                   production, severance, sales, use and excise taxes, customs
                   duties and similar taxes and assessments based on or
                   measured by the ownership of the Assets or the production of
                   the Petroleum Substances from the Lands or the receipt of
                   proceeds therefrom which are the obligations of Novalta have
                   been properly accrued or paid and discharged;

         9.37      Reports:  In connection with the preparation of the Sproule
                   Report, the Arthur D. Little Report and the Howard Opinions,
                   Novalta provided to persons preparing such reports or
                   opinions all information within its knowledge which, if not
                   disclosed, would have





<PAGE>   42
                                       39

                   materially and adversely altered such reports or opinions 
                   with respect to any of the Assets;

         9.38      Compliance With Laws:  With respect to the Assets operated
                   by Novalta, Novalta has and, to the best of its and
                   Novalta's knowledge, persons operating any of the Assets on
                   behalf of Novalta (with respect to the Assets not operated
                   by Novalta) have, obtained all permits, licenses and other
                   authorizations which are required under federal, provincial
                   and local laws relating to the Assets, the failure of which
                   to obtain would materially affect the value, use or
                   operation of the Assets taken as a whole.  Novalta (with
                   respect to the Assets operated by it) and, to the best of
                   its and Novalta's knowledge, persons operating the Assets on
                   behalf of Novalta (with respect to the Assets not operated
                   by Novalta) are in compliance with all laws, permits,
                   licences and authorizations, the failure with which to
                   comply could have a Material Adverse Effect;

         9.39      Environmental:  Except as set forth in the Arthur D. Little
                   Report: (i) none of the Assets are subject by any government
                   or any agency thereof, or by another person or group, to any
                   environmental action, order, or to the best of Vendor's and
                   Novalta's knowledge any review or investigation the result
                   of which could have a Material Adverse Effect, (ii) no
                   complaint has been made or filed by any such government,
                   agency, person or group having to do with any environmental
                   change or injury to the Assets or any other property or
                   person or alleged damage or injury that could have a
                   Material Adverse Effect and, (iii) there is no matter,
                   condition or thing affecting the Assets or for which Novalta
                   or any of its subsidiaries may be liable under Environmental
                   Law which could reasonably give rise to any such complaint,
                   action, order, review or investigation the result of which
                   could have a Material Adverse Effect;

         9.40      Physical Change:  There has been no physical change
                   subsequent to July 1, 1993 in the Assets (other than in
                   consequence of operations and production in the ordinary
                   course) which has or would have a material adverse effect on
                   the value, use or operation thereof taken as a whole;

         9.41      No Retail Sales of Gas:  Neither Novalta nor any of its
                   subsidiaries has made or agreed to make any sales of gas at
                   retail (which shall not include industrial sales);





<PAGE>   43
                                       40


         9.42      Tax Residence:  (Intentionally omitted.)

         9.43      Operated Assets/Non-Operated Assets:  Those of the Assets
                   operated by Novalta during the time Novalta was operator
                   thereof, have been drilled, developed and operated in
                   accordance with good oilfield practice and in material
                   compliance with all applicable laws and regulations and the
                   terms and conditions of all agreements relative thereto and,
                   with respect to non-operated Assets, neither Vendor nor
                   Novalta is aware of any material fact or circumstance that
                   indicates that the same have not been drilled, developed and
                   operated in material compliance with all applicable laws and
                   regulations and the terms and conditions of all agreements
                   relative thereto;

         9.44      Workers' Compensation:  All payments due to the Workers'
                   Compensation Board in respect of all operations undertaken
                   in relation to the Assets are current and such Board is not
                   entitled to any claim or lien against any of the Assets due
                   to such payment not being made;

         9.45      No Other Subsidiaries:  Novalta does not have a controlling
                   interest (either directly or indirectly) in any other person
                   except for the interest in Amber Valley Energy Corporation
                   and Novalta Rosebank South Limited Partnership nor is it
                   bound by any agreement to acquire such interest;

         9.46      Property Leases:  Novalta is not a party to or bound by any
                   real property leases other than the Office Leases and
                   surface leases, mineral leases, easements, rights of ways or
                   other similar rights or interests entered into by Novalta in
                   the ordinary course of business;

         9.47      Take or Pay Obligations:  Except as set forth on Schedule
                   9.47, Novalta has no take or pay obligations nor is it in
                   any manner obligated to deliver Petroleum Substances
                   produced from the Assets without then or thereafter
                   receiving payment therefor in accordance with the relevant
                   sales contract;

         9.48      Gas Balancing Agreements:  Novalta is not a party to any gas
                   balancing agreements;

         9.49      Incentive Payments:  Novalta has not received any
                   incentives, credits, grants, or other governmental





<PAGE>   44
                                       41

                   assistance pursuant to any laws in effect at the relevant 
                   time which will have to be repaid by Novalta;

         9.50      Independent Operations Penalties:  The Assets are not
                   subject to any production penalties or interest forfeitures
                   that have resulted or may or will result from Novalta having
                   elected to not participate in drilling, completion or other
                   operations pursuant to the independent operation provisions
                   of operating agreements that would have a Material Adverse
                   Effect except as set forth in Schedule 9.50;

         9.51      Absence of Certain Changes:  Except as described on Schedule
                   9.51 or any other Schedule or Appendix and except as a
                   result of matters resulting from this Agreement, since July
                   1, 1993, the business and operations of Novalta and its
                   subsidiaries have been conducted in the ordinary course,
                   neither Novalta nor any subsidiary has taken any action that
                   would have constituted a violation of Subclause 8.2 or 8.3
                   if such Subclauses had applied to Novalta since July 1,
                   1993, and there has not been any event, condition,
                   occurrence or change in the business, financial condition,
                   assets or results of the operations of Novalta and its
                   subsidiaries that would have or could reasonably be expected
                   to have a Material Adverse Effect, other than events,
                   conditions, occurrences or changes that generally relate to
                   the oil and gas industry or the economy and other than asset
                   dispositions in the ordinary course of business;

         9.52      No Assignments of Revenues:  Novalta has not assigned to any
                   other party all or any portion of its share or revenue
                   attributable to the sale of petroleum substances for the
                   purposes of security of indebtedness of Novalta or otherwise
                   except in support of the Bank Security;

         9.53      Through Put Guarantees:  Novalta is not bound to by any
                   "through put guarantees" whereby Novalta has, in connection
                   with the processing, compressing, gathering, transporting,
                   or other handling of its Petroleum Substances in a facility,
                   guaranteed that a minimum quantity of Petroleum Substances
                   will be put through such facility by Novalta, excluding
                   contracts for the transportation of Petroleum Substances by
                   NOVA Corporation of Alberta, TransCanada PipeLines Limited
                   and similar transporters except as set forth in Schedule
                   9.53; and





<PAGE>   45
                                       42


         9.54      Intercompany Transactions and Relationships:  Except as set
                   forth on Schedule 9.54, neither Novalta nor any of its
                   subsidiaries is a party to any agreement, with Vendor or any
                   of its Affiliates excluding contracts for the transportation
                   of Petroleum Substances by NOVA Corporation of Alberta,
                   TransCanada PipeLines Limited and similar transporters.

         9.55      GST:  Novalta has duly and timely filed all returns required
                   in respect of the goods and services tax (herein, the "GST")
                   imposed by the Excise Tax Act (Canada) and has paid all GST
                   which is due and payable and has paid all assessments and
                   reassessments in respect of GST and interest and penalties
                   relating thereto payable by it on or before the date hereof
                   and has made adequate provision for GST payable for the
                   current period for which a return has not yet been filed.

(C)      Purchaser: Purchaser represents, warrants and covenants to and with
         Vendor as follows:

         9.56      Corporate Standing: Purchaser is, and at the Closing Time
                   shall continue to be, a corporation duly incorporated,
                   organized, validly existing and in good standing under the
                   laws of the State of Texas;

         9.57      Requisite Authority: Subject to ratification by Purchaser's
                   Board of Directors, Purchaser has all requisite power and
                   authority to enter into this Agreement and to perform its
                   obligations hereunder and the execution and delivery of this
                   Agreement and the consummation of the transactions
                   contemplated herein have been duly authorized by all
                   necessary corporate action on the part of Purchaser.  The
                   parties agree that if such Board ratification has not been
                   obtained on or before 12:00 Noon (Calgary time) on the date
                   hereof, the Vendor may terminate this Agreement without
                   further liability by the parties hereunder by written notice
                   to Purchaser at any time prior to such ratification being
                   obtained;

         9.58      No Conflicts: The execution and delivery of this Agreement
                   and each and every agreement and instrument to be executed
                   and delivered hereunder and the consummation of the
                   transactions contemplated herein will not violate or result
                   in a breach or default of, require any consent under nor be
                   in conflict with, the provisions of any agreement, license,
                   permit, franchise





<PAGE>   46
                                       43

                   or other instrument to which Purchaser is a party or by 
                   which it is bound, any judgment, decree, injunction, 
                   order, law, statute, rule or regulation applicable to 
                   Purchaser or Purchaser's Articles of Incorporation or 
                   bylaws;

         9.59      Execution and Delivery:  This Agreement has been duly
                   executed and delivered by Purchaser and all other documents
                   required to be executed and delivered by Purchaser pursuant
                   hereto will be duly executed and delivered by Purchaser and
                   this Agreement does, and such documents will, constitute
                   legal, valid and binding obligations of Purchaser
                   enforceable in accordance with their respective terms;

         9.60      No Lawsuits or Claims: Purchaser is not party to any action,
                   suit or other legal, administrative or arbitration
                   proceeding or government investigation, actual or
                   threatened, which has or could have any material adverse
                   affect on the purchase or sale of the Shares and there is no
                   particular circumstance, matter or thing known to Purchaser
                   which could reasonably be anticipated to give rise to any
                   such action, suit or other legal, administrative or
                   arbitration proceeding or government investigation;

         9.61      Finders' Fees: Purchaser has not incurred any obligation or
                   liability, contingent or otherwise, for brokers' or finders
                   fees in respect of the within transactions for which Vendor
                   or Novalta will have any obligation or liability; and

         9.62      Tax Residence:  Purchaser is a non-resident of Canada within
                   the meaning of the Income Tax Act (Canada).

(D)      Vendor Disclaimer: Vendor makes no representations or warranties
         whatsoever except, and to the extent, expressly set forth in
         Subclauses 9(A) and (B) and Appendix "J" or in any certificate
         delivered pursuant to this Agreement and disclaims, and shall not be
         liable for, any representation or warranty which may have been made or
         alleged to have been made in any other document or instrument relative
         hereto or in any statement or information made or communicated to
         Purchaser in any manner.  Without in any way restricting the
         generality of the foregoing, Purchaser specifically acknowledges that
         it has made and will be making its own independent investigations,
         analyses, evaluations and inspections with respect to Novalta's assets
         and liabilities and the state and condition thereof and that it has
         relied and will be relying solely on





<PAGE>   47
                                       44

         such investigations, analyses, evaluations and inspections as to its
         assessment of the condition, quantum and value of Novalta's assets and
         liabilities save to the extent such matters are expressly addressed in
         Subclause 9(B) and Appendix "J" or in any certificate delivered
         pursuant to this Agreement.

(E)      Purchaser Disclaimer: Purchaser makes no representations or warranties
         whatsoever except, and to the extent, expressly set forth in Subclause
         9(C) or in any certificate delivered pursuant to this Agreement and
         disclaims, and shall not be liable for, any representation or warranty
         which may have been made or alleged to have been made in any other
         document or instrument relative hereto or in any statement or
         information made or communicated to Vendor in any manner.

(F)      No Merger: The representations, warranties and covenants set forth in
         Subclauses 9(A), (B) and (C) and Appendix "J" shall survive Closing
         and shall be deemed to apply to all documents delivered in furtherance
         of the provisions hereof and there shall not be any merger of any
         representation, warranty or covenant in such documents notwithstanding
         any rule of law, equity or statute to the contrary, all such rules
         being waived.

(G)      Survive Closing: Notwithstanding anything to the contrary herein
         expressed or implied, it is agreed and understood that the
         representations, warranties and covenants set forth in Subclauses
         9(A), (B) and (C) and Appendix "J" are true and correct or to be
         complied with on the date hereof and shall be repeated at Closing as
         being true and correct or complied with in all material respects at
         and as of the Effective Time the Closing Time and, notwithstanding the
         Closing, the delivery of representations, warranties and covenants in
         any other agreements or certificates at the Closing or prior or
         subsequent thereto or investigations by the parties hereto or their
         employees, consultants, agents, accountants or other representatives
         (including, without limitation, their counsel), the representations,
         warranties and covenants set forth in Subclauses 9(A), (B) and (C) and
         Appendix "J" shall not in any way be diminished or lessened by reason
         of the foregoing and shall survive Closing for the benefit of the
         parties hereto for a period of 12 months from the date of Closing;
         provided, however, that any such representation or warranty that is
         the subject of a written claim notice delivered in good faith in the
         manner described below shall survive with respect only to the specific
         matter described in such claim notice until the earlier to occur of
         (A) the date on which a final nonappealable resolution of the matter





<PAGE>   48
                                       45

         described in such claim notice has been reached or (B) the date on
         which the matter described in such claim notice has otherwise reached
         final resolution.  Notwithstanding the foregoing, the representations
         and warranties contained in Subclauses 9.6 and 9.7 shall survive the
         Closing indefinitely and the survival of the representations and
         warranties provided in Appendix "J" shall not be limited except as
         expressly provided in Appendix "J".

(H)      Breach and Indemnity:  Subject to the provisions of Appendix "J" with
         respect to the matters referred to therein, any party who breaches or
         is otherwise responsible for the incorrectness of any representation,
         warranty or covenant set forth in this Agreement (including, without
         limitation, the representations, warranties and covenants set forth in
         Subclauses 9(A), (B) or (C) or in Appendix "J") shall forthwith
         indemnify, defend, protect and save the other party (including their
         respective officers, directors and employees) harmless from and
         against any liability, loss, costs, claims, actions or damages of any
         kind or nature whatsoever, whether direct or indirect, to which such
         party may be put, incur or suffer as a result of such breach or
         incorrectness provided:

         (a)       Written Notice:  Subject to the last sentence of Subclause
                   9(G), written notice of the claim is provided by the party
                   seeking indemnification within 12 months from Closing;

         (b)       Basket:  Neither Vendor nor Purchaser shall be entitled to
                   any indemnification unless, and only to the extent that all
                   claims by it for breach or incorrectness of representations,
                   warranties and covenants collectively exceed by
                   $1,000,000.00 the claims of the other party for breach or
                   incorrectness of representations, warranties and covenants;
                   and

         (c)       Value Limitation:  Notwithstanding anything to the contrary
                   herein expressed or implied, the maximum aggregate liability
                   of Vendor to Purchaser for a breach of the terms of this
                   Agreement, for misrepresentation or for indemnification
                   pursuant hereto shall not exceed the Purchase Price.  The
                   provisions of this Subclause 9(H) shall not apply to the
                   indemnity provided by the Purchaser and Novalta in Subclause
                   9(I) of this Agreement.

(I)      Environmental Indemnity:  It is acknowledged that Purchaser has
         reviewed the Arthur D. Little Report and has been provided with the
         right and opportunity to conduct due diligence





<PAGE>   49
                                       46

         investigations with respect to existing or potential Environmental
         Liabilities pertaining to the Resource Assets.  Subject to the
         provisions of Subclauses 9(A) and 9(B), Purchaser agrees that Vendor
         shall have no liability whatsoever for any Environmental Liabilities.

         In regard to Environmental Liabilities, Purchaser shall, subject as
         aforesaid indemnify and defend, and cause Novalta to indemnify and
         defend, Vendor, and its officers and directors, from and against all
         actions, causes of action, losses, costs (including legal costs on a
         solicitor client basis), claims, damages or expenses of any nature
         whatsoever which Vendor may sustain, pay or incur as a result of any
         act, omission, matter or thing directly or indirectly related to the
         Resource Assets, done, omitted, occurring or accruing on, prior to, or
         subsequent to the Effective Time with respect to any and all
         Environmental Liabilities however and whenever arising.  This
         liability and indemnity shall apply without limit and without regard
         to cause or causes, including without limitation the negligence,
         whether sole, concurrent, gross, active, passive, primary or
         secondary, or the wilful or wanton misconduct of any person, or
         otherwise.  Purchaser acknowledges and agrees that it shall not be
         entitled to any rights or remedies as against Vendor under the common
         law or statute pertaining to Environmental Liabilities relating to the
         Resource Assets including, without limitation, the right to name
         Vendor as a third party to any action commenced by any person against
         Purchaser.  Nothing herein contained shall prejudice any claims or
         remedies that Vendor may have against Purchaser in relation to such
         claim or remedy outside this Agreement including rights and remedies
         under the common law or statute.  This Subclause 9(I) shall, not
         withstanding any term, clause or interpretation to the contrary,
         survive Closing for an indefinite period of time.  Should survival for
         an indefinite period be determined by a court of competent
         jurisdiction to be an illegal, invalid or unenforceable provision then
         the parties agree that it is their intent that this provision survive
         to the maximum extent and for the maximum period of time determined to
         be legal, valid and enforceable.

10.      EMPLOYEES

         10.1      Purchaser to Continue to Employ Employees:  Following the
                   Closing, the Purchaser shall cause the Novalta employees,
                   other than any Novalta employee on long-term disability at
                   the Closing, to be employed on terms and conditions that
                   provide comparable total compensation (inclusive of base
                   salary and benefit Plans) with that





<PAGE>   50
                                       47

                   currently provided by Novalta at the Closing.  The Vendor 
                   shall be responsible for all liabilities and obligations 
                   to Novalta employees on long-term disability as at the 
                   Closing.

                   Novalta employees who are on long-term disability at the 
                   Closing shall be given employment by Novalta upon their 
                   recovery from disability.

         10.2      Pension Plan:

                   (a)       Effective as of the Closing, those Novalta
                             Employees at the Closing (the "Transferred
                             Employees") who participate in, and accrue
                             benefits under, the Retirement Plan for Western
                             Canadian Salaried Employees of NOVA Corporation of
                             Alberta (the "NOVA Plan") shall cease to
                             participate in, and accrue benefits under, the
                             NOVA Plan.

                   (b)       Pursuant to Subclause 10.1, as soon as practicable
                             after Closing, the Purchaser shall establish at
                             its own expense, a Group RRSP or Retirement Plan
                             (the "Seagull Plan").  Following the Closing, the
                             Transferred Employees shall have the election,
                             pursuant to the NOVA Plan, and the applicable
                             federal and provincial regulations, to:

                             i)  transfer the value of the Transferred 
                                 Employee's pension from the NOVA Plan to 
                                 the Seagull Plan;

                             ii)  transfer the value of the Transferred
                                  Employee's pension from the NOVA Plan to the
                                  employee's own locked-in RRSP; or

                             iii) to leave the amount on deposit in order to
                                  obtain a deferred pension from the NOVA Plan
                                  upon retirement.

                   This clause is subject to all applicable federal and
                   provincial regulations and approvals, including without
                   limitation, the Income Tax Act (Canada) and regulations and
                   the Employment Pension Plans Act (Alberta) and regulations.

         10.3      Recognition of Length of Service:  Following Closing,
                   Novalta shall continue to recognize the length of





<PAGE>   51
                                       48

                   service, as recognized by Novalta (including service with 
                   predecessor entities of Novalta), up to the Closing, of all 
                   Novalta employees who are employed at Closing by Novalta for 
                   all purposes, including, without limitation, for the purpose 
                   of legislated benefits or as otherwise required by law, 
                   including, without limitation, severance pay and notice of 
                   termination or pay in lieu thereof.  In addition, following 
                   Closing, and for a period of one-year thereafter, the 
                   Purchaser shall cause Novalta to recognize the severance 
                   guidelines of Vendor for purposes of severance pay and 
                   notice of termination or pay in lieu thereof, for all 
                   Novalta employees who are employed by Purchaser after 
                   Closing, such severance guidelines being set out in
                   Appendix "H".

         10.4      Termination Obligations:  At the Closing Time, the
                   termination obligations set out in Appendix "H" shall remain
                   the responsibility of Novalta and the Purchaser agrees to
                   cause Novalta to be bound by the provisions of such
                   termination agreements and agrees to make all payments to
                   which the employees may be entitled under such termination
                   agreements.

11.      USE OF NAME "NOVALTA"

         11.1      Corporate Name:  Purchaser shall cause Novalta to take all
                   corporate action necessary to change its corporate name no
                   later than one Business Day following the Closing Time.
                   Subject to the foregoing, the name "Novalta Resources Inc."
                   shall not be included as a part of the sale to Purchaser,
                   all rights to such name shall be retained by Vendor.
                   Subject to the provisions of Section 11.2, the Purchaser,
                   its Affiliates, successors and permitted assigns and any
                   person claiming through Purchaser shall be strictly
                   prohibited from using the name "Novalta" as part of any
                   corporate, trade, or assumed name.

         11.2      Signage:  Purchaser agrees that within 60 days after Closing
                   it shall remove any signs which indicate Novalta's ownership
                   or operation of the Resource Assets.  Where necessary, it
                   will be the responsibility of the Purchaser to erect or
                   install signs as may be required by governmental agencies
                   indicating the Purchaser or Novalta, under a new name as the
                   operator of the Resource Assets, the Lands and the Leases
                   and notify other working interest owners, gas purchasers,
                   suppliers, contractors, governmental agencies and any





<PAGE>   52
                                       49

                    other third parties of Purchaser's interest in the 
                    Resource Assets.

                    If after 60 days after Closing Purchaser has not removed all
                    signs which indicate Novalta's ownership or operation of the
                    Resource Assets, Vendor may remove any signs which Purchaser
                    has failed to remove and Purchaser agrees that Vendor shall
                    have reasonable access to the Lands for such purpose.

12.      (Intentionally omitted.)

13.      TERMINATION

In the event this Agreement is properly terminated pursuant to Clause 4 or 7,
subject to Subclause 3.1 dealing with the return or forfeiture of the Deposit
and the continuing confidentiality obligations of the parties, both parties
shall be released from all obligations hereunder and each party shall take all
reasonable actions to return the other party to the position relative to the
Shares and Note which such party occupied immediately prior to the execution of
this Agreement.

14.      AMENDMENT

All amendments to this Agreement will only be considered to be binding upon the
parties if evidenced by a written instrument executed by proper corporate
signing officers.

15.      WAIVER

The parties acknowledge and agree that any waiver of the provisions of this
Agreement shall only be binding upon the waiving party if evidenced in writing
and signed by a corporate signing officer of the waiving party; any such waiver
shall apply only to the particular breach, default, obligation or provision
specifically identified and waived and not to any other breaches, defaults,
obligations or provisions, whether or not similar; any such waiver shall not
constitute a continuing waiver unless expressly stated; and any delay or
omission upon the part of a party in exercising any right or power under this
Agreement shall not impair the ability of such party to exercise such right or
power or be considered to be a waiver of, or acquiescence to, any breach or
default.

16.      TIME OF THE ESSENCE

Time shall be of the essence in this Agreement.





<PAGE>   53
                                       50

17.      NOTICES

The initial addresses of the parties for notices or other writings required,
permitted or desired hereunder shall be as follows:

Vendor

(a)      Personal Service

         Novacor Petrochemicals Ltd.
         c/o 36th Floor
         801 - 7th Avenue S.W.
         Calgary, Alberta
         Attention:  Jack S. Mustoe
                     Senior Vice President, General Counsel and
                     Corporate Secretary

(b)      Mailing:

         Novacor Petrochemicals Ltd.
         c/o P.O. Box
         Calgary, Alberta
         Attention:  Jack S. Mustoe
                     Senior Vice President, General Counsel and
                     Corporate Secretary

(c)      Fax:

         (403) 237- 6102
         Attention:  Jack S. Mustoe
                     Senior Vice President, General Counsel and
                     Corporate Secretary

Purchaser

(a)      Personal Service/Mailing:

         Seagull Energy Corporation
         1001 Fannin, 17th Floor
         Houston, Texas 77002
         Attention: Barry J. Galt
         Chairman and Chief Executive Officer





<PAGE>   54
                                       51

b)       Mailing:

         Seagull Energy Corporation
         1001 Fannin, 17th Floor
         Houston, Texas 77002
         Attention: Barry J. Galt
         Chairman and Chief Executive Officer

(c)      Fax:

         Seagull Energy Corporation
         (713) 951-4733
         Attention: Barry J. Galt
         Chairman and Chief Executive Officer

Either party may from time to time change its address for service herein by
giving written notice to the other party in the manner herein provided.  Any
such notice or other writing may be served by personal service, by mailing the
same by prepaid post in a properly addressed envelope addressed to the intended
addressee at its address for service hereunder or by fax to the number
hereunder.  Any notice given by personal service shall be deemed to be given on
the date of such service and any notice given by mail shall be deemed to be
given to and received by the addressee on the fifth Business Day (except days
upon which the postal service in Canada is interrupted) after the mailing
thereof.  Any notice given by fax shall be deemed to be given to and received
by the addressee upon the sending thereof with appropriate answerback
acknowledged.  In the event the postal service in Canada is, or is threatened
to be, interrupted, all notices and other writings shall be served by personal
service or fax.

18.      ENUREMENT

This Agreement shall be binding upon and shall enure to the benefit of the
parties hereto and their respective successors, receivers, receiver-managers,
trustees and permitted assigns.  This Agreement may not be assigned by
Purchaser without the prior written consent of Vendor.  Notwithstanding the
foregoing, Purchaser may assign or delegate its rights and obligations under
this Agreement or any part hereof to any direct or indirect wholly owned
subsidiary of Purchaser, but no such assignment shall in any way operate to
enlarge, alter or change any obligation of or due to Vendor or relieve
Purchaser of its obligations hereunder.  Nothing in this Agreement shall
provide any benefit to any third party or entitle any third party to any claim,
cause of action, remedy or gift of any kind, it being the intent of the parties
that this Agreement shall not be construed as a third party beneficiary
contract, provided, however, that the indemnification provisions in this





<PAGE>   55
                                       52

Agreement shall inure to the benefit of the persons in the categories expressly
identified in such provisions.

19.      FURTHER ASSURANCES

Each party hereto, without further consideration, shall do or perform or cause
to be done or performed all such further and other acts and things, execute,
acknowledge and deliver or cause to be executed, acknowledged and delivered all
such further and other instruments, deeds and other writings and generally
shall take or cause to be taken all such further and other actions as may be
necessary or desirable to carry out its respective obligations under this
Agreement.

20.      COSTS

Except as may elsewhere herein be provided, each party hereto shall bear and be
responsible for all costs and expenses (including, without limitation, fees and
disbursements for lawyers and other advisors) incurred or to be incurred by it
in negotiating and preparing this Agreement, any deeds, documents and other
writings delivered in conjunction with or in furtherance hereof and in
otherwise performing the transactions contemplated herein.

21.      GOVERNING LAW

This Agreement shall, in all respects, be subject to and be interpreted,
construed and enforced in accordance with the laws in effect in the Province of
Alberta.  Each party hereto accepts the jurisdiction of the courts of the
Province of Alberta and all courts of appeal therefrom.

22.      ENTIRE AGREEMENT

This Agreement supersedes and replaces any and all prior agreements between the
parties hereto relating to the sale and purchase of the Shares and Note and
states and comprises the entire agreement between the parties in relation to
such sale and purchase; provided, however, that the foregoing sentence does not
apply to the Confidentiality Agreement, which will survive the execution,
delivery or termination of this Agreement.  If the Closing occurs, the
Confidentiality Agreement shall terminate and be of no further force or effect.

At the Closing, Vendor shall execute and deliver a confidentiality agreement in
favour of Novalta and Purchaser with respect to Novalta and the Assets, which
confidentiality agreement shall be in substantially the form of the
Confidentiality Agreement.





<PAGE>   56
                                       53

23.      PUBLIC ANNOUNCEMENTS

Prior to the Closing Time, each of the parties shall cooperate with the other
in relaying information concerning this Agreement and the transactions herein
provided for and shall furnish to, discuss with and obtain written approval
from the other party of all press and other releases prior to publication,
which approval may not be unreasonably withheld; provided, however, that
nothing contained herein shall prevent either party, at any time, from
furnishing any information to any governmental agency or regulatory authority
or to the public if, and only to the extent, required by applicable law
(including any securities exchange regulation).

24.      COUNTERPART EXECUTION

This Agreement may be executed in counterpart, each of which shall be
considered an original but all of which together shall constitute one and the
same instrument.

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

Vendor:  Novacor Petrochemicals Ltd.

Per: ______________________

Per: ______________________


Purchaser: Seagull Energy Corporation

Per: ______________________

Per: ______________________





<PAGE>   57
                            APPENDIX J - TAX MATTERS


ARTICLE 1 - INTERPRETATION

1.1                DEFINITIONS:

                   In this Schedule, including the appendices hereto, unless
                   otherwise stated or the context otherwise requires

         (a)       "Alberta Act" means the Alberta Corporate Tax Act;

         (b)       "ARTC" means the royalty tax credit provided for under
                   section 26.1 of the Alberta Act;

         (c)       "Assessment" means an assessment or reassessment for the
                   purposes of the Tax Act, the Alberta Act or any applicable
                   income or capital tax legislation of any Canadian province;

         (d)       "CCDE" means cumulative Canadian development expense, within
                   the meaning of paragraph 66.2(5)(b) of the Tax Act;

         (e)       "CCEE" means cumulative Canadian exploration expense, within
                   the meaning of paragraph 66.1(6)(b) of the Tax Act;





<PAGE>   58


         (f)       "CCOGPE" means cumulative Canadian oil and gas property
                   expense, within the meaning of paragraph 66.4(5)(b) of the
                   Tax Act;

         (g)       "Corporation" means Novalta and Amber Valley Energy
                   Corporation, or either of them, as the context requires;

         (h)       "Deemed Year End" means the time that is immediately before
                   the time that control of the Corporation is acquired by the
                   Purchaser, as more particularly described in paragraph
                   249(4)(a) of the Tax Act;

         (i)       "Depreciable Property" means depreciable property within the
                   meaning of subsection 248(1) of the Tax Act;

         (j)       "EDB" means earned depletion base, within the meaning of
                   subsection 1205(1) of the Tax Act Regulations;

         (k)       "Indemnified Party" means the Purchaser or the Corporation,
                   as the context requires;

         (l)       "Indemnity Amount" means the amount determined in accordance
                   with clause 5.4 hereof;





<PAGE>   59
                                     - 3 -


         (m)       "Indemnity Event" means an event deemed hereby to occur when
                   a representation or warranty of the Vendor in Article 2 of
                   this Schedule is untrue, inaccurate or otherwise breached
                   and a Taxation Authority refuses to accept that such matter
                   represented or warranted is true and correct, but excludes
                   any event which was directly caused by any action of the
                   Indemnified Party or any person with whom the Indemnified
                   Party does not deal at arm's length for the purposes of the
                   Tax Act;

         (n)       "ITC" means investment tax credit, within the meaning of
                   subsection 127(9) of the Tax Act;

         (o)       "Successored CCDE" means CCDE which is only deductible
                   subject to the limitations contained in subsection 66.7(4)
                   of the Tax Act;

         (p)       "Successored CCEE" means CCEE which is only deductible
                   subject to the limitations contained in subsection 66.7(3)
                   of the Tax Act;

         (q)       "Successored CCOGPE" means CCOGPE which is only deductible
                   subject to the limitations contained in subsection 66.7(5)
                   of the Tax Act;

         (r)       "Successored EDB" means EDB which is only deductible subject
                   to the limitations contained in subsection 1202(2) of the
                   Tax Act Regulations;
<PAGE>   60
                                   - 4 -

         (s)       "Tax Act" means the Income Tax Act (Canada);

         (t)       "Tax Act Regulations" means the regulations passed pursuant
                   to the Tax Act;

         (u)       "Taxation Authority" means any person authorized to issue an
                   Assessment; and

         (v)       "UCC" means undepreciated capital cost, within the meaning
                   of paragraph 13(21)(f) of the Tax Act;

         (w)       "Unrestricted CCDE" means CCDE which is not Successor CCDE;

         (x)       "Unrestricted CCEE" means CCEE which is not Successored CCEE;

         (y)       "Unrestricted CCOGPE" means CCOGPE which is not Successored
                   CCOGPE;

         (z)       "Unrestricted EDB" means EDB which is not Successored EDB;

<PAGE>   61

                                 - 5 -



1.2                ADDENDA

                   The following Addenda are attached to this Schedule:
         (a)       Addendum "A" - Successor Resource Properties
         (b)       Addendum "B" - 1992 Tax Returns of the Corporation

ARTICLE 2 - REPRESENTATIONS AND WARRANTIES OF THE VENDOR

2.1                VENDOR'S REPRESENTATIONS:

                   The Vendor represents and warrants to the Purchaser, which
statements shall be true and correct as of the Effective Time and at the
Closing Time, unless otherwise agreed by the parties, as follows:

         (a)       Filings
                   The Corporation has duly and in a timely manner filed all
                   returns, elections and designations which are required to be
                   filed by it with any Taxation Authority.  All of such
                   returns, elections and designations have been prepared and
                   made in accordance with the applicable legislation.  In
                   particular, the amounts specified in the 1992 tax returns of
                   the Corporation, as contained in Appendix "B" hereto, as UCC
                   of Depreciable Property, Unrestricted CCEE, Unrestricted
                   CCDE, Unrestricted CCOGPE, Unrestricted EDB, Successored
                   CCEE, Successored CCDE, Successored





<PAGE>   62
                                     - 6 -

                   CCOGPE, Successored EDB and ITC were true and correct at 
                   the time of the filing of such returns.

         (b)       Withholdings
                   Corporation has withheld and will continue until the Closing
                   Time to withhold from each payment made to any of its
                   present and former officers, directors, and employees or
                   from any payment which is subject to a withholding
                   requirement under Part XIII of the Tax Act or any similar
                   provincial legislation the amount of all taxes and other
                   amounts required to be withheld therefrom, and will have
                   paid the same to the proper tax or other receiving officers
                   within the time required under any applicable legislation.

         (c)       Extension
                   Corporation is not a party to any agreement, waiver or
                   arrangement with any Taxation Authority which relates to any
                   extension of time with respect to the filing of any return,
                   election or designation, any payment of an amount by
                   Corporation or any Assessment of Corporation.





<PAGE>   63
                                     - 7 -

         (d)       Taxation Year End
                   The taxation year of Corporation for the purposes of the Tax
                   Act, ends on December 31st in each year and no change in
                   such taxation year end has been made since December 31,
                   1992.

         (e)       Residence
                   The Vendor is not a non-resident of Canada for the purposes 
                   of the Tax Act.

         (f)       Tax Pools Immediately after Effective Time
                   Immediately after the Effective Time, the aggregate amount
                   of the UCC of Depreciable Property, Successored CCEE,
                   Successored CCDE, Successored CCOGPE, Successored EDB and
                   ITC of the Corporation will be not less than $85 Million.

         (g)       Taxable Canadian Corporation
                   Corporation has been, is now, and will, at the Effective
                   Time, be a taxable Canadian corporation, within the meaning
                   of paragraph 89(1)(i) of the Tax Act.





<PAGE>   64
                                     - 8 -

         (h)       ARTC
                   At all relevant times before the Effective Time, the
                   Corporation was entitled to ARTC to the extent reflected in
                   its tax returns.

2.2                SURVIVAL OF VENDOR'S REPRESENTATIONS AND WARRANTIES

                   Except where expressly provided for to the contrary herein,
the representations and warranties of the Vendor set forth in this Schedule
shall survive the completion of the sale and purchase of the Shares as provided
for in Article 2 of the Agreement, and shall continue in full force and effect
for the benefit of the Purchaser.  Any claim in respect thereof shall only be
made on the basis, in the manner and within the time provided for in Article 5.

ARTICLE 3 - COVENANTS OF THE VENDOR

         The Vendor covenants and agrees with the Purchaser as follows:

3.1                FINAL INCOME TAX RETURNS

                   The Vendor will make available such information as the
Purchaser may reasonably request in order to enable the Purchaser to comply
with its obligations under clause 4.2 and 4.3 hereof.





<PAGE>   65
                                     - 9 -


ARTICLE 4 - COVENANTS OF THE PURCHASER

                   The Purchaser covenants and agrees with the Vendor as
follows:

4.1                TAX RETURN FILING

                   The Purchaser shall ensure that all income tax, capital tax
and other returns which the Corporation is required to file with any Taxation
Authority for any period ending after the Deemed Year End are prepared and
filed on a basis consistent with the provisions of this Appendix J and, subject
to clause 4.3 hereof, shall further ensure that no income tax, capital tax or
other returns, or elections or designations, of Corporation are filed, amended
or rescinded for any period ending before the Deemed Year End without the prior
written approval of the Vendor.

4.2                FINAL INCOME TAX RETURN

                   The Purchaser will cause the preparation of all income tax,
capital tax and other returns which the Corporation is required to file with
any Taxation Authority in respect of the fiscal period of Corporation which
ends on the Deemed Year End.  Purchaser may cause an election to be made under
subsection 256(9) in respect of the timing of Deemed Year End.





<PAGE>   66
                                     - 10 -

4.3                1993 INCOME TAX RETURN

                   The Purchaser shall be responsible for filing all income
tax, capital tax and other returns which the Corporation is required to file
with any Taxation Authority for the taxation year of Corporation ending
December 31, 1993.  The Purchaser will obtain Vendor's approval, such approval
not to be unreasonably withheld, to such returns before filing same and the
Purchaser shall cause the Corporation to execute such returns, subject to the
Vendor's approval of same.  The Purchaser shall pay or cause to pay in a timely
manner all taxes, if any, required to be paid in respect of any form or return
filed pursuant to this clause.

4.4                LARGE CORPORATIONS TAX

                   The Purchaser agrees in the calendar year in which the
Deemed Year End occurs, that the Corporation shall agree to a nil allocation of
the capital deduction pursuant to the provisions of subsection 181.5(2) of the
Tax Act.

ARTICLE 5 - INDEMNIFICATIONS

5.1                INDEMNITY

                   Subject to the provisions of Subclause 9(H)(b) and (c) of
the Agreement, the Vendor hereby indemnifies and agrees to defend and save
harmless the 


<PAGE>   67

                                    - 11 -

Indemnified Party, on an after tax basis, from and against all
losses, damages or expenses (including all reasonable legal fees and expenses
incurred with respect to the enforcement of this indemnity), to the extent and
on the basis hereinafter set forth, which are suffered by the Indemnified Party
as a result of the occurrence of an Indemnity Event.  The Vendor shall have no
liability in respect of the matters covered by this Schedule except in respect
of an Indemnity Event and except on the basis provided for in this Article.

5.2                PRE-ASSESSMENT PROCEDURE

        If the Indemnified Party receives a notice or other communication
(written or oral) from a Taxation Authority after the Closing Time respecting
an Indemnity Event (an "Indemnity Tax Issue"), the Indemnified Party shall
forthwith forward a copy of such notice to the Vendor, or otherwise notify the
Vendor, of the contents of such communication, and the Vendor shall have the
right, at its own expense, including all legal fees, costs and expenses, to
require the Indemnified Party to make representations with respect to such
Indemnity Tax Issue through counsel retained for this purpose by the Vendor. 
The Indemnified Party shall be obligated to cooperate fully at all times with
the Vendor and counsel so appointed, and to act in a timely manner, and in good
faith, to make available all documents and records necessary to enable the
Vendor to make representations with respect to, or otherwise contest,  the
Indemnity Tax Issue. If the Vendor, having received notice of, or other 
communication in respect 

<PAGE>   68
                                  - 12 -

of, an Indemnity Tax Issue, as contemplated herein, decides not to require the
Indemnified Party to make representations with respect to such Indemnity Tax
Issue, the Vendor shall promptly so inform the Indemnified Party and thereafter
the Indemnified Party may do so on its own behalf, and at its own expense.
Thereafter, any decision by the Indemnified Party not to make representations
or any lack of success by the Indemnified Party in such action shall not, in
such event, relieve the Vendor of its obligation to indemnify the Indemnified
Party pursuant to the terms and conditions of this Article, except that such
indemnity shall not, in such instance, extend to legal and other costs incurred
by the Indemnified Party in connection with such Indemnity Tax Issue.

5.3                PROCEDURE ON ASSESSMENT

                   If any Taxation Authority should at any time issue an
Assessment to the Indemnified Party, the basis of which is, in whole or in
part, an Indemnity Event, the Vendor shall pay the Indemnity Amount in relation
to the Assessment to the Indemnified Party within 30 days after the Indemnified
Party is required to pay the Taxation Authority the amount (including any
interest and/or penalty) specified in such Assessment.





<PAGE>   69
                                     - 13 -

5.4                INDEMNITY AMOUNT
                   
                   The Indemnity Amount in relation to an Assessment shall mean
                   the aggregate of

         (a)       the amount (including any interest and/or penalty) which is
                   specified to be payable in such Assessment insofar as such
                   amount is directly attributable to an Indemnity Event; and

         (b)       an amount of interest from the date of mailing of such
                   Assessment to the date of the payment by the Vendor to the
                   Indemnified Party of the amount specified in clause 5.4(a)
                   calculated on the amount specified in clause 5.4(a) at a
                   rate equal to the prescribed interest rate of the purposes
                   of the Tax Act, or the interest burden of an Assessment
                   other than under the Tax Act.

After the Vendor has paid to the Indemnified Party the Indemnity Amount in
respect of an Assessment, the Indemnified Party shall forthwith pay an amount
(not exceeding the amount received from the Vendor) to the Taxation Authority
sufficient to satisfy the obligation of the Indemnified Party in respect of the
Assessment to the Taxation Authority.





<PAGE>   70
                                     - 14 -


5.5                OBJECTION/APPEAL PROCEDURE

                   The Indemnified Party shall, within 5 working days after the
receipt of an Assessment, deliver a copy of such Assessment to the Vendor.  The
Vendor shall have the right, at its option, to be responsible for the carriage
of any objection or appeal from such Assessment, in which case the Vendor shall
be entitled to retain its own counsel for that purpose and shall be responsible
for all expenses, including legal fees and other costs associated therewith.
The Indemnified Party shall cooperate with the Vendor to the extent reasonably
necessary if the Vendor wishes to object to or appeal any such Assessment.  The
Vendor shall be responsible for all expenses, including legal fees and costs,
incurred by the Indemnified Party in so cooperating.  If such objection or
appeal is successful, in whole or in part, the Indemnified Party shall pay, to
the Vendor, the amount of any refund received in respect of such Assessment
(not exceeding the portion of the Indemnity Amount in respect of such
Assessment that the Vendor has paid to the Indemnified Party as herein
provided) together with the applicable portion of such interest, determined on
an after - tax basis, received on such refund and all legal and other costs to
which the Indemnified Party becomes entitled as a result of such successful
objection or appeal.  The Indemnified Party shall join in and pursue any
objection to or appeal of any such Assessment in a timely manner and in good
faith cooperate fully at all times, with the Vendor and counsel that the
Vendor retains and shall make available to the Vendor and such counsel all
documents and records necessary to enable the Vendor to contest such Assessment.






<PAGE>   1
                                                                Exhibit 2.2





                                   GUARANTEE

This Guarantee is given by Novacor Chemicals Ltd., an Alberta corporation
("Guarantor") to Seagull Energy Corporation, a Texas corporation ("Seagull").

WHEREAS Seagull has entered into that certain Share Sale Agreement dated as of
the 19th day of November, 1993 (the "Share Sale Agreement") with Novacor
Petrochemicals Ltd. ("Vendor"); and

WHEREAS, Seagull's entering into the Share Sale Agreement is conditional upon
Guarantor guaranteeing the obligations of the Vendor under the Share Sale
Agreement; and

WHEREAS, Guarantor is willing to give such a guarantee in order to induce
Seagull to enter into the Share Sale Agreement.

NOW, THEREFORE, Guarantor hereby agrees, in consideration of Seagull's entering
into the Share Sale Agreement, as follows:

1.       Guarantor hereby guarantees performance and payment by the Vendor of
         all of the obligations and liabilities of the Vendor under the Share
         Sale Agreement (the "Obligations"), subject to the terms and
         provisions of the Share Sale Agreement; provided, however, that any
         defense that would be available to the Vendor against a claim made by
         Seagull against the Vendor shall also be available to the Guarantor
         against any claim made by Seagull against the Guarantor.

2.       Guarantor hereby waives notice of (a) any alteration or modification
         of the Share Sale Agreement, and (b) default or demand in the case of
         default, provided such notice or demand has been given to or made upon
         the Vendor.

3.       In the event of default by Vendor, the Guarantor shall make payment
         and cause performance of the defaulted Obligations to Seagull fifteen
         (15) days after demand therefor has been received by the Guarantor
         unless payment has been made and performance has occurred prior
         thereto, and, if payment has not been made and performance has not
         occurred within such fifteen (15) day period, Seagull may institute
         and enforce, directly against the Guarantor, a suit based on this
         Guarantee for payment and performance of the defaulted Obligations.

4.       This Guarantee shall, in all respects, be subject to and be
         interpreted, construed and enforced in accordance with the laws in
         effect in the Province of Alberta.  The Guarantor shall submit to the
         exclusive jurisdiction of the courts of the Province of Alberta.

5.       This Guarantee has been duly executed and delivered by Guarantor, and
         this Guarantee constitutes a legal, valid and binding obligation of
         Guarantor, enforceable in accordance 
<PAGE>   2
         with its terms.  Guarantor has all requisite power and authority to 
         execute and deliver this Guarantee and to perform its obligations 
         hereunder.  The financial statements for the Guarantor attached as 
         Appendix "I" to the Agreement have been prepared in accordance with 
         GAAP and present the financial position of Guarantor and the results 
         of its operations for the periods referred to therein.  Since the date 
         of such financial statements, the Guarantor has not suffered a 
         material adverse effect to its business or financial condition.

IN WITNESS WHEREOF, Guarantor has executed this Guarantee as of the date set
forth below.



                                        NOVACOR CHEMICALS LTD.


                                        By: ___________________________________

                                        Date: _________________________________





<PAGE>   1
                                                                   Exhibit 2.3


                      FIRST AMENDMENT TO CREDIT AGREEMENT



         THIS FIRST AMENDMENT TO CREDIT AGREEMENT ("First Amendment") dated as
of December 30, 1993 (the "First Amendment Effective Date") is made and entered
into by and among SEAGULL ENERGY CORPORATION (the "Borrower"), a Texas
corporation, the banking institutions from time to time a party to the Credit
Agreement (as hereinafter defined) as amended by this First Amendment (each,
together with its successors and assigns, a "Bank" and collectively, the
"Banks"), and TEXAS COMMERCE BANK NATIONAL ASSOCIATION, as administrative agent
for the Banks (in such capacity, the "Administrative Agent").


RECITALS:

         WHEREAS, the Borrower, the Administrative Agent and the Banks are
parties to an Amended and Restated Credit Agreement dated as of June 25, 1993
(the "Credit Agreement"); and

         WHEREAS, the Borrower, the Administrative Agent and the Banks have
agreed, on the terms and conditions herein set forth, that the Credit Agreement
be amended in certain respects;

         NOW, THEREFORE, IT IS AGREED:

         Section 1.       Definitions.  Terms used herein which are defined in
the Credit Agreement shall have the same meanings when used herein unless
otherwise provided herein.

         Section 2.       Amendments to the Credit Agreement.  On and after the
First Amendment Effective Date, the Credit Agreement shall be amended as
follows:

         (a)     The following new definitions are hereby added to Section 1 of
the Credit Agreement:

                 "Canadian Facility" shall mean that certain Credit Agreement
         dated December 30, 1993 executed by and among Seagull Energy Canada
         Ltd., Chemical Bank of Canada, as Arranger and as Administrative
         Agent, The Bank of Nova Scotia, as Paying Agent and as Co-Agent,
         Canadian Imperial Bank of Commerce, as Co-Agent, and certain banks
         therein named, as amended by the Intercreditor Agreement.

                 "Intercreditor Agreement" shall mean that certain
         Intercreditor Agreement dated concurrently herewith executed by and
         among the Company, Seagull Energy Canada,





<PAGE>   2
         Ltd., the Administrative Agent and the "Administrative Agent" under
         the Canadian Facility.


         (b)     The definition of "Borrowing Base Debt" set forth in Section 1
of the Credit Agreement is hereby amended to read in its entirety as follows:

                 "Borrowing Base Debt" shall mean, without duplication,  the
         sum of (i) borrowed money Indebtedness that is not Funded Indebtedness
         plus (ii) Senior Debt plus (iii) the "Maximum Outstanding Amount" in
         effect from time to time under the Canadian Facilityplus (iv)
         Redemption Obligations payable within five (5) years after any
         applicable determination date, together with obligations (excluding
         volumetric obligations with respect to pre-sales of Hydrocarbon
         production which have already been accounted for in the calculation of
         the Borrowing Base) payable out of Hydrocarbon production (except such
         obligations payable solely by recourse to properties not included in
         the Borrowing Base and Indebtedness permitted by Section 10.1(l)) to
         the extent such obligations have not already been deducted in the
         calculation of the Borrowing Base; provided, however, that Borrowing
         Base Debt shall not include the Loans or any Subordinated Debt.

         (c)     The definition of "Liquid Investments" set forth in Section 1
of the Credit Agreement is hereby amended to read in its entirety as follows:

         "Liquid Investments" shall mean:

         (I) in the case of investments of U.S. Dollars

                 (i)      securities issued or directly, fully and
                          unconditionally guaranteed or insured by the United
                          States of America or any agency or instrumentality
                          thereof provided that the full faith and credit of
                          the United States of America is pledged in support
                          thereof) having maturities of not more than one year
                          from the date of issue;

                 (ii)     U.S. Dollar time deposits and certificates of deposit
                          (A) of any Bank having capital and surplus in excess
                          of U.S. $300,000,000, or (B) of any commercial bank
                          incorporated in the United States, of recognized
                          standing, having capital and surplus in excess of
                          U.S. $500,000,000 and which has (or which is a
                          Subsidiary of a holding company which has) publicly
                          traded debt securities rated, at the time of issuance
                          of such time deposits, AA or higher by Standard &
                          Poor's Corporation or Aa-2 or higher by Moody's
                          Investors Service, Inc. with maturities of not more
                          than one year from the date of issue;





                                       2
<PAGE>   3
                 (iii)    repurchase obligations with a term of not more than
                          seven days for underlying securities of the types
                          described inclause (I)(i) above entered into with any
                          bank meeting the qualifications specified in clause
                          (I)(ii)above, provided that the terms of such
                          agreements comply with the guidelines set forth in
                          the Federal Financial Institution Examination Counsel
                          Supervisory Policy--Repurchase Agreements of
                          Depository Institutions With Securities Dealers and
                          Others, as adopted by the Comptroller of the Currency
                          on October 31, 1985;

                 (iv)     commercial paper or other U.S. Dollar obligations
                          issued by the parent corporation (A) of any Bank
                          having capital and surplus in excess of U.S.
                          $300,000,000, or (B) of any commercial bank (provided
                          that the parent corporation and the bank are both
                          incorporated in the United States) of recognized
                          standing having capital and surplus in excess of U.S.
                          $500,000,000 and commercial paper or other U.S.
                          Dollar obligations issued by any Person incorporated
                          in the United States, which commercial paper is rated
                          at least A-2 or the equivalent thereof by Standard &
                          Poor's Corporation or at least P-2 or the equivalent
                          thereof by Moody's Investors Service, Inc. and in
                          each case maturing not more than six months after the
                          date of issue;

                 (v)      obligations of any state or political subdivision
                          thereof rated at least F-1 by Fitch Investors
                          Service, Inc. or AA by Standard & Poor's Corporation
                          with an original maturity of 180 days or less; and

                 (vi)     investments in money market funds substantially all
                          the assets of which are comprised of securities of
                          the types described in clauses (I)(i) through (v)
                          above; and

         (II) in the case of investments of Canadian dollars

                 (i)      bonds or other evidences of indebtedness of, or the
                          principal and interest of which is fully guaranteed
                          by, the Government of Canada or any province of
                          Canada, payable in Canadian dollars and (in the case
                          of any provincial obligations and any Government of
                          Canada obligations that are rated) rated AAA or AA
                          (or the then equivalent grade) by Dominion Bond
                          Rating Service Limited, or any other nationally
                          recognized bond rating service, having a maturity not
                          in excess of one year,

                 (ii)     certificates of deposit issued or guaranteed by a
                          bank or trust company organized under the laws of
                          Canada or any province thereof, provided such bank or
                          trust company has capital and retained earnings in
                          the aggregate in excess of Canadian $500,000,000 on
                          its most recent balance





                                       3
<PAGE>   4
                          sheet (whether audited or unaudited), having a 
                          maturity not in excess of one year,

                 (iii)    bankers' acceptances of any bank or trust company the
                          certificates of deposit of which would constitute
                          Liquid Investments as provided in clause (II)(ii)
                          above, if outstanding unsecured debt of such bank or
                          trust company is rated no less than AA (or the then
                          equivalent grade) by Dominion Bond Rating Service
                          Limited, or any other nationally recognized bond
                          rating service; and

                 (iv)     commercial paper rated no less than R-1 (or the then
                          equivalent grade) by Dominion Bond Rating Service
                          Limited or A-1 (or the then equivalent grade) by CBRS
                          Inc., having a maturity not in excess of one year;
                          excluding any bonds or other evidences of
                          indebtedness, certificates of deposit or commercial
                          paper which a Canadian chartered bank may not hold as
                          security under the Bank Act (Canada).

         (d)     The definition of "Loan Documents" set forth in Section 1 of
the Credit Agreement is hereby amended by adding a reference to "the
Intercreditor Agreement".

         (e)     Section 10.1 of the Credit Agreement is hereby amended by
changing the period (.) at the end of subsection (u) to a semi-colon (;) and by
adding a new subsection (v), such subsection to read in its entirety as
follows:

                 (v)      the Canadian Facility (and the "Bankers' Acceptances"
         provided for therein) and the guaranty by the Company of the Canadian
         Facility.

         (f)     Section 10.2 of the Credit Agreement is hereby amended by
restyling subsections (x) and (y) as subsections (y) and (z) and by adding a
new subsection (x), such subsection to read in its entirety as follows:

                 (x)      as to assets located in Canada, reservations,
         limitations, provisos and conditions in any original grant from the
         Crown or freehold lessor of any of the properties of the Company or
         its Subsidiaries;

         (g)     Section 10.3 of the Credit Agreement is hereby amended by
restyling subsection (n) as subsection (o) and by adding a new subsection (n),
such subsection to read in its entirety as follows:

                 (n)      Investments in EBOC Energy Ltd. made in connection
         with and pursuant to that certain Sale Agreement dated November 19,
         1993 executed by and between Novacor Petrochemicals Ltd., as Vendor,
         and the Parent, as Purchaser; and





                                       4
<PAGE>   5
         (h)     A new Section 13.16 is hereby added to the Credit Agreement,
such section to read in its entirety as follows:

                 13.16    Intercreditor Agreement.  Reference is hereby made to
         the Intercreditor Agreement, which provides for certain matters
         relating to both the Loans and the Canadian Facility.  To the extent
         of any conflict between the terms hereof and the terms of the
         Intercreditor Agreement, the Intercreditor Agreement shall control.
         The Administrative Agent is hereby authorized and directed to execute
         and deliver the Intercreditor Agreement in the form attached hereto as
         Exhibit K on behalf of the Banks.  Any Bank that becomes a party to
         this Agreement after the First Amendment Effective Date agrees to be
         bound by the terms and provisions of the Intercreditor Agreement.

         (i)     Exhibit A to the Credit Agreement is hereby amended to be
identical to Exhibit A attached hereto, being a revised listing of Oil and Gas
Subsidiaries.

         (j)     Exhibit F to the Credit Agreement is hereby amended to be
identical to Exhibit B attached hereto, being a revised listing of
Subsidiaries.

         (k)     Exhibit G to the Credit Agreement is hereby amended to be
identical to Exhibit C attached hereto, being a revised Compliance Certificate.

         (l)     Exhibit H to the Credit Agreement is hereby amended to be
identical to Exhibit D attached hereto, being a revised Assignment and
Acceptance Agreement.

         (m)     Exhibit J to the Credit Agreement is hereby amended to be
identical to Exhibit E attached hereto, being revised Parameters for Interest
Rate Protection and Commodities Futures Programs.

         (n)     A new Exhibit K is hereby added to the Credit Agreement, such
new exhibit to be identical to Exhibit F attached hereto, being a copy of the
Intercreditor Agreement executed and delivered concurrently with the execution
and delivery of this First Amendment.

         Section 3.  Borrowing Base Component Values.  The Borrowing Base
Component Values, after giving effect to the transactions contemplated in the
Canadian Facility, will be as follows:

         (i)     Oil and Gas Reserves Component Value - $519,000,000 (of which
                 $95,000,000 is attributable to the assets of Novalta Resources
                 Inc.),

         (ii)    Alaskan Gas Component Value - $47,000,000,

         (iii)   Pipeline Component Value - 44,000,000,





                                       5
<PAGE>   6
for a total Borrowing Base of $610,000,000.

         Section 4.  Limitations.  The amendments set forth herein are limited
precisely as written and shall not be deemed to (a) be a consent to, or waiver
or modification of, any other term or condition of the Credit Agreement or any
of the other Loan Documents, or (b) except as expressly set forth herein,
prejudice any right or rights which the Banks may now have or may have in the
future under or in connection with the Credit Agreement, the Loan Documents or
any of the other documents referred to therein.  Except as expressly modified
hereby or by express written amendments thereof, the terms and provisions of
the Credit Agreement, the Notes, the Security Documents and any other Loan
Documents or any other documents or instruments executed in connection with any
of the foregoing are and shall remain in full force and effect.  In the event
of a conflict between this First Amendment and any of the foregoing documents,
the terms of this First Amendment shall be controlling.

         Section 5.  Payment of Expenses.  The Borrower agrees, whether or not
the transactions hereby contemplated shall be consummated, to reimburse and
save the Administrative Agent harmless from and against liability for the
payment of all reasonable substantiated out-of-pocket costs and expenses
arising in connection with the preparation, execution, delivery, amendment,
modification, waiver and enforcement of, or the preservation of any rights
under this First Amendment, including, without limitation, the reasonable fees
and expenses of any local or other counsel for the Administrative Agent, and
all stamp taxes (including interest and penalties, if any), recording taxes and
fees, filing taxes and fees, and other charges which may be payable in respect
of, or in respect of any modification of, the Credit Agreement and the other
Loan Documents.  The provisions of this Section shall survive the termination
of the Credit Agreement and the repayment of the Loans.

         Section 6.  Governing Law.  This First Amendment and the rights and
obligations of the parties hereunder and under the Credit Agreement shall be
construed in accordance with and be governed by the laws of the State of Texas
and the United States of America.

         Section 7.  Descriptive Headings, etc.  The descriptive headings of
the several Sections of this First Amendment are inserted for convenience only
and shall not be deemed to affect the meaning or construction of any of the
provisions hereof.

         Section 8.  Entire Agreement.  This First Amendment and the documents
referred to herein represent the entire understanding of the parties hereto
regarding the subject matter hereof and supersede all prior and contemporaneous
oral and written agreements of the parties hereto with respect to the subject
matter hereof, including, without limitation, any commitment letters regarding
the transactions contemplated by this First Amendment.





                                       6
<PAGE>   7
         Section 9.  Counterparts.  This First Amendment may be executed in any
number of counterparts and by different parties on separate counterparts and
all of such counterparts shall together constitute one and the same instrument.

         Section 10.  Amended Definitions.  As used in the Credit Agreement
(including all Exhibits thereto) and all other instruments and documents
executed in connection therewith, on and subsequent to the First Amendment
Effective Date the term "Agreement" shall mean the Credit Agreement as amended
by this First Amendment.

         IN WITNESS WHEREOF, the parties hereto have caused this First
Amendment to be duly executed and delivered by their respective duly authorized
offices as of the date first above written.

            NOTICE PURSUANT TO TEX. BUS. & COMM. CODE Section 26.02

         THIS FIRST AMENDMENT AND ALL OTHER LOAN DOCUMENTS EXECUTED BY ANY OF
THE PARTIES BEFORE OR SUBSTANTIALLY CONTEMPORANEOUSLY WITH THE EXECUTION HEREOF
TOGETHER CONSTITUTE A WRITTEN LOAN AGREEMENT AND REPRESENT THE FINAL AGREEMENT
BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

Exhibit A - Oil and Gas Subsidiaries
Exhibit B - Subsidiaries
Exhibit C - Compliance Certificate
Exhibit D - Assignment and Acceptance Agreement
Exhibit E - Parameters for Interest Rate Protection and Commodities Futures
                          Programs
Exhibit F - Intercreditor Agreement


                                       SEAGULL ENERGY CORPORATION,
                                       a Texas corporation


                                       By:______________________________________
                                             Robert M. King, 
                                             Vice President, Corporate 
                                             Development and Treasurer





                                       7
<PAGE>   8
                                       TEXAS COMMERCE BANK NATIONAL
                                       ASSOCIATION, individually
                                       and as Administrative Agent


                                       By:______________________________________
                                             Robert C. Mertensotto, 
                                             Senior Vice President





                                       8
<PAGE>   9

                                       THE CHASE MANHATTAN BANK, N.A.


                                       By:______________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       MORGAN GUARANTY TRUST COMPANY
                                       OF NEW YORK


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       NATIONSBANK OF TEXAS, N.A.


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       THE FIRST NATIONAL BANK OF BOSTON


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________





                                       9
<PAGE>   10
                                       CREDIT LYONNAIS NEW YORK BRANCH


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       ABN AMRO BANK N.V., HOUSTON AGENCY


                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________



                                       THE BANK OF NEW YORK


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       THE FUJI BANK, LIMITED
                                       HOUSTON AGENCY


                                       By: _____________________________________
                                                    Soichi Yoshida, 
                                                    Vice President and Manager





                                       10
<PAGE>   11
                                       NBD BANK, N.A.


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       SOCIETE GENERALE, SOUTHWEST AGENCY


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       BANQUE PARIBAS HOUSTON AGENCY


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       THE BANK OF TOKYO, LTD.,
                                       DALLAS AGENCY


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________





                                       11
<PAGE>   12
                                       BANK OF SCOTLAND


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       CAISSE NATIONALE DE CREDIT
                                       AGRICOLE


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       CHRISTIANIA BANK OG KREDITKASSE


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________





                                       12
<PAGE>   13
                                       DEN NORSKE BANK AS


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       MIDLAND BANK PLC,
                                       NEW YORK BRANCH


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________



                                       BANQUE INDOSUEZ


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________


                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________





                                       13
<PAGE>   14
                                       FIRST INTERSTATE BANK OF
                                       TEXAS, N.A.

                                       By: _____________________________________
                                       Name: ___________________________________
                                       Title: __________________________________





                                       14





<PAGE>   1
                                                            Exhibit 2.4





                               DECEMBER 30, 1993


                                CREDIT AGREEMENT

              U.S. $175,000,000 REDUCING REVOLVING CREDIT FACILITY

                                     AMONG

                           SEAGULL ENERGY CANADA LTD.

                                      AND

                            CHEMICAL BANK OF CANADA,
             INDIVIDUALLY AND AS ARRANGER AND ADMINISTRATIVE AGENT,

                            THE BANK OF NOVA SCOTIA,
                 INDIVIDUALLY AND AS PAYING AGENT AND CO-AGENT,

                      CANADIAN IMPERIAL BANK OF COMMERCE,
                         INDIVIDUALLY AND AS CO-AGENT,

                                      AND

                        THE OTHER BANKS SIGNATORY HERETO





<PAGE>   2
                               TABLE OF CONTENTS

                                    
<TABLE>
<S>              <C>                                                                       <C>
SECTION  1.      DEFINITIONS AND ACCOUNTING MATTERS . . . . . . . . . . . . . . . . . . .   1
         1.1     Certain Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . .   1
         1.2     Accounting Terms and Determinations  . . . . . . . . . . . . . . . . . .  24
         1.3     Types of Loans . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         1.4     Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                                                                                    
SECTION  2.      COMMITMENTS; DESIGNATION OF MAXIMUM OUTSTANDING AMOUNT.  . . . . . . . .  25
         2.1     Loans and Bankers' Acceptances . . . . . . . . . . . . . . . . . . . . .  25
         2.2     Letters of Credit  . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         2.3     Reductions and Changes of Commitments. . . . . . . . . . . . . . . . . .  29
         2.4     Fees.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
         2.5     Affiliates; Lending Offices. . . . . . . . . . . . . . . . . . . . . . .  31
         2.6     Several Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         2.7     Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         2.8     Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
                                                                                    
SECTION  3.      BORROWINGS, PREPAYMENTS AND SELECTION OF INTEREST RATES. . . . . . . . .  32
         3.1     Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.2     Prepayments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.3     Selection of Interest Rates  . . . . . . . . . . . . . . . . . . . . . .  33
         3.4     Conditions Applicable to Bankers' Acceptances  . . . . . . . . . . . . .  33
         3.5     Paying Agent's Duties Re Bankers' Acceptances  . . . . . . . . . . . . .  36
         3.6     Certain Provisions Relating to Bankers' Acceptances Forms  . . . . . . .  37
                                                                                    
SECTION  4.      PAYMENTS OF PRINCIPAL AND INTEREST.  . . . . . . . . . . . . . . . . . .  37
         4.1     Repayment of Loans and Reimbursement Obligations . . . . . . . . . . . .  37
         4.2     Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         4.3     Acceptance Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
                                                                                    
SECTION  5.      PAYMENTS; PRO RATA TREATMENT; COMPUTATIONS, ETC. . . . . . . . . . . . .  39
         5.1     Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         5.2     Pro Rata Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         5.3     Computations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         5.4     Minimum and Maximum Amounts  . . . . . . . . . . . . . . . . . . . . . .  40

</TABLE>





                                      (1)
<PAGE>   3

<TABLE>
<S>              <C>                                                                                             <C>
         5.5     Certain Actions, Notices, Etc  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         5.6     Non-Receipt of Funds by the Paying Agent . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         5.7     Sharing of Payments, Etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
                                                                                                             
SECTION  6.      YIELD PROTECTION AND ILLEGALITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         6.1     Additional Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         6.2     Limitations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         6.3     Illegality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         6.4     Substitute Alternate Base Rate Loans or Canadian Prime Rate Loans  . . . . . . . . . . . . . .  46
         6.5     Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         6.6     Additional Costs in Respect of Letters of Credit . . . . . . . . . . . . . . . . . . . . . . .  47
         6.7     Capital Adequacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         6.8     Limitation on Additional Charges; Substitute Banks; Non-Discrimination . . . . . . . . . . . .  49
                                                                                                             
SECTION  7.      CONDITIONS PRECEDENT.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         7.1     Initial Loans and Acceptance and Purchase of Bankers' Acceptances  . . . . . . . . . . . . . .  49
         7.2     Initial and Subsequent Loans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
                                                                                                             
SECTION  8.      REPRESENTATIONS AND WARRANTIES.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         8.1     Corporate Existence  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         8.2     Corporate Power and Authorization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         8.3     Binding Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8.4     No Legal Bar or Resultant Lien . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8.5     No Consent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8.6     Financial Condition  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8.7     Investments and Guaranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8.8     Liabilities and Litigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8.9     Taxes and Governmental Charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8.10    Title to Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8.11    Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8.12    Location of Businesses and Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         8.13    Compliance with Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         8.14    Margin Stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         8.15    Subsidiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         8.16    ERISA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         8.17    Investment Company Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         8.18    Public Utility Holding Company Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
                                                                                                             
</TABLE> 
            




                                      (2)
<PAGE>   4
<TABLE>
<S>              <C>                                                                               <C>
          8.19   Environmental Matters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
          8.20   Claims and Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
          8.21   Solvency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
                                                                                          
SECTION   9.     AFFIRMATIVE COVENANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
          9.1    Financial Statements and Reports . . . . . . . . . . . . . . . . . . . . . . . .  58
          9.2    Officers' Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
          9.3    Taxes and Other Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
          9.4    Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
          9.5    Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
          9.6    Performance of Obligations . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
          9.7    Reimbursement of Expenses  . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
          9.8    Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
          9.9    Accounts and Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
          9.10   Rights of Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
          9.11   Notice of Certain Events . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
          9.12   ERISA Information and Compliance . . . . . . . . . . . . . . . . . . . . . . . .  65
          9.13   Minimum APC Dividends and/or ENSTAR Alaska Advances  . . . . . . . . . . . . . .  66
          9.14   Minimum ENSTAR Alaska Management Fees  . . . . . . . . . . . . . . . . . . . . .  67
          9.15   Minimum ENSTAR Alaska Tax Payments . . . . . . . . . . . . . . . . . . . . . . .  67
                                                                                          
SECTION  10.     NEGATIVE COVENANTS.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
         10.1    Debts, Guarantees and Other Obligations  . . . . . . . . . . . . . . . . . . . .  67
         10.2    Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  70
         10.3    Investments, Loans and Advances  . . . . . . . . . . . . . . . . . . . . . . . .  73
         10.4    Dividend Payment Restrictions  . . . . . . . . . . . . . . . . . . . . . . . . .  74
         10.5    Mergers, Amalgamations and Sales of Assets . . . . . . . . . . . . . . . . . . .  74
         10.6    Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
         10.7    ERISA Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
         10.8    Amendment of Certain Documents . . . . . . . . . . . . . . . . . . . . . . . . .  76
         10.9    Tangible Net Worth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         10.10   ENSTAR Alaska Financial Ratios . . . . . . . . . . . . . . . . . . . . . . . . .  76
         10.11   Parent Debt/Capitalization Ratio . . . . . . . . . . . . . . . . . . . . . . . .  77
         10.12   EBITDA/Interest Ratio  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  77
         10.13   Nature of Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  77
         10.14   Futures Contracts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  77
         10.15   Covenants in Other Agreements  . . . . . . . . . . . . . . . . . . . . . . . . .  77
                                                                                          
SECTION  11.     DEFAULTS.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
</TABLE> 
             
             
             
             
             
                                      (3)
<PAGE>   5
<TABLE> 
<S>              <C>                                                                                 <C>
         11.1    Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
         11.2    Collateral Account . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  81
         11.3    Preservation of Security for Unmatured Reimbursement Obligations . . . . . . . . .  81
         11.4    Right of Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  81
                                                                                               
SECTION  12.     THE AGENTS.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
         12.1    Appointment, Powers and Immunities . . . . . . . . . . . . . . . . . . . . . . . .  82
         12.2    Reliance by Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  83
         12.3    Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         12.4    Rights as a Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         12.5    Indemnification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         12.6    Non-Reliance on Agents and Other Banks . . . . . . . . . . . . . . . . . . . . . .  85
         12.7    Failure to Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  85
         12.8    Resignation or Removal of Agents . . . . . . . . . . . . . . . . . . . . . . . . .  85
                                                                                               
SECTION  13.     MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86
         13.1    Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86
         13.2    Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86
         13.3    Indemnification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86
         13.4    Amendments, Etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  87
         13.5    Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  88
         13.6    Limitation of Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  91
         13.7    Interest Act (Canada); Interest Generally  . . . . . . . . . . . . . . . . . . . .  92
         13.8    Certain Saskatchewan Legislation . . . . . . . . . . . . . . . . . . . . . . . . .  92
         13.9    Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         13.10   Captions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         13.11   Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         13.12   Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         13.13   Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         13.14   Confidential Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  94
         13.15   Intercreditor Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
         13.16   Judgement Currency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
         13.17   Withholding Tax Remittances  . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
</TABLE>





                                      (4)
<PAGE>   6
EXHIBIT A        OIL AND GAS SUBSIDIARIES
EXHIBIT B        FORM OF REQUEST FOR EXTENSION OF CREDIT
EXHIBIT C-1      FORM OF REVOLVING CREDIT LOAN NOTE (U.S. DOLLARS)
EXHIBIT C-2      FORM OF REVOLVING CREDIT LOAN NOTE (CANADIAN DOLLARS)
EXHIBIT D        SUBSIDIARIES (WITH ADDRESSES)
EXHIBIT E        FORM OF COMPLIANCE CERTIFICATE
EXHIBIT F        ASSIGNMENT AND ACCEPTANCE
EXHIBIT G        FORM OF ENGINEERING REPORT CERTIFICATE
EXHIBIT H        PARAMETERS INTEREST RATE PROTECTION AND COMMODITIES FUTURES
                 PROGRAMS
EXHIBIT I        INTERCREDITOR AGREEMENT
EXHIBIT J        AMENDMENT TO U.S. FACILITY
EXHIBIT K        FORM OF BANKERS' ACCEPTANCE





                                      (5)
<PAGE>   7
                                CREDIT AGREEMENT


         This CREDIT AGREEMENT, dated as of December 30, 1993, is by and among
SEAGULL ENERGY CANADA LTD. (the "Company"), a corporation duly organized and
validly existing under the laws of the Province of Alberta, Canada; each of the
banks which is or which may from time to time become a signatory hereto
(individually, a "Bank" and, collectively, the "Banks"); CHEMICAL BANK OF
CANADA ("Chemical"), as arranger and administrative agent for the Banks (in
such capacity, together with its successors in such capacity, the
"Administrative Agent"); THE BANK OF NOVA SCOTIA ("BNS"), as paying agent and
co-agent for the Banks (in such capacity, together with its successors in such
capacity, the "Paying Agent"), and CANADIAN IMPERIAL BANK OF COMMERCE ("CIBC"),
as co-agent for the Banks (in such capacity, together with its successors in
such capacity, the "Co-Agent").

         The parties hereto agree as follows:

         SECTION 1.       DEFINITIONS AND ACCOUNTING MATTERS

         1.1     Certain Defined Terms.  As used herein, the following terms
shall have the following meanings (all terms defined in this Section 1.1 or in
other provisions of this Agreement in the singular to have the same meanings
when used in the plural and vice versa):

         "Additional Costs" shall have the meaning ascribed to such term in
Section 6.1 hereof.

         "Affiliate" shall mean, as to any Person, any other Person which
directly or indirectly controls, or is under common control with, or is
controlled by, such Person and, if such Person is an individual, any member of
the immediate family (including parents, siblings, spouse, children,
stepchildren, grandchildren, nephews and nieces) of such individual and any
trust whose principal beneficiary is such individual or one or more members of
such immediate family and any Person who is controlled by any such member or
trust.  As used in this definition, "control" (including, with correlative
meanings, "controlled by" and "under common control with") shall mean
possession, directly or indirectly, of power to direct or cause the direction
of management or policies (whether through ownership of securities or
partnership or other ownership interests, by contract or otherwise).

         "Agents" shall mean the Administrative Agent, the Paying Agent and the
Co-Agent, collectively.

         "Agreement" shall mean this Credit Agreement, as the same may be
amended, modified, restated or supplemented from time to time.





                                       1
<PAGE>   8
         "Alternate Base Rate" shall mean, for any day, a rate per annum equal
to the higher of (a) the U.S. Prime Rate in effect on such day or (b) 1/2 of 1%
plus the Federal Funds Rate in effect for such day (rounded upwards, if
necessary, to the nearest 1/16th of 1%).  For purposes hereof, "Federal Funds
Rate" shall mean, for any period, a fluctuating interest rate per annum equal
for each day during such period to the weighted average of the rates on
overnight Federal funds transactions with members of the Federal Reserve System
arranged by Federal funds brokers, as published for such day (or, if such day
is not a Business Day, for the next preceding Business Day) by the Federal
Reserve Bank of New York, or, if such rate is not so published for any day
which is a Business Day, the average of the quotations for such day on such
transactions received by the Paying Agent from three Federal funds brokers of
recognized standing selected by it.  For purposes of this Agreement, any change
in the Alternate Base Rate due to a change in the Federal Funds Rate shall be
effective on the effective date of such change in the Federal Funds Rate.  If
for any reason the Paying Agent shall have determined (which determination
shall be conclusive and binding, absent manifest error) that it is unable to
ascertain the Federal Funds Rate for any reason, including, without limitation,
the inability or failure of the Paying Agent to obtain sufficient bids or
publications in accordance with the terms hereof, the Alternate Base Rate shall
be the U.S. Prime Rate until the circumstances giving rise to such inability no
longer exist.  For the purposes hereof, "U.S. Prime Rate" shall mean the annual
rate of interest announced from time to time by the Paying Agent in Canada as
its U.S. Base Rate for U.S. Dollar loans made by the Paying Agent in Canada.
Without notice to the Company or any other Person, the U.S. Prime Rate shall
change automatically from time to time as and in the amount by which said
annual rate of interest shall fluctuate.  The U.S. Prime Rate is a reference
rate and does not necessarily represent the lowest or best rate actually
charged to any customer.  Chemical Bank, any Agent or any Bank may make
commercial loans or other loans at rates of interest at, above or below the
U.S. Prime Rate.  For purposes of this Agreement any change in the Alternate
Base Rate due to a change in the U.S. Prime Rate shall be effective on the date
such change in the U.S. Prime Rate is announced.

         "Alternate Base Rate Loans" shall mean Loans which bear interest at a
rate based upon the Alternate Base Rate.

         "APC" shall mean Alaska Pipeline Company, an Alaska corporation, a
Subsidiary of the Parent.

         "APC Long Term Financing Documents" shall mean that certain Inducement
Agreement and that certain Note Agreement (together with the Notes, as defined
therein), each dated as of May 14, 1992, by and among the Parent, Aid
Association for Lutherans, The Equitable Life Assurance Society of the United
States, Equitable Variable Life Insurance Company, Provident Life and Accident
Insurance Company and Teachers Insurance & Annuity Association of America, any
documentation executed in connection with any renewal, extension or
rearrangement of the Indebtedness that is the subject of the foregoing
documents, the Gas Sales Contract, the Intercompany Mortgage, as defined in the
above-mentioned Note Agreement, and





                                       2
<PAGE>   9
any documents executed in replacement of any of the foregoing documents, if
any, and only if the Administrative Agent has received notice thereof pursuant
to Section 10.8.

         "Applicable Lending Office" shall mean, for each Bank and for each
Type of Loan and for each Bankers' Acceptance, such office of such Bank (or of
an affiliate of such Bank) as such Bank may from time to time specify to the
Paying Agent and the Company as the office by which its Loans of such Type are
to be made and/or issued and maintained and at which Bankers' Acceptances are
to be accepted and purchased; provided, however, that each such office shall be
located in Canada.

         "Applicable Margin" shall mean, on any day and with respect to any
Loan, the applicable per annum percentage set forth at the appropriate
intersection in the table shown below, based on the Debt/Capitalization Ratio
as of the last day of the most recently ending fiscal quarter of the Parent and
its Subsidiaries with respect to which the Administrative Agent shall have
received the financial statements and other information (the "Current
Information") required to be delivered to the Administrative Agent pursuant to
Section 9.1 hereof (said calculation to be made by the Administrative Agent as
soon as practicable after receipt by the Administrative Agent of all required
Current Information):


<TABLE>
<CAPTION>
                                                    Applicable Margin                                                           
                                                    For Alternate Base        Applicable Margin
         Debt/Capitalization Ratio                Rate Loans and Canadian   For Eurodollar Loans
         -------------------------                    Prime Rate Loans      --------------------
                                                  -----------------------
         <S>                                                <C>                     <C>  
         Greater than or equal to 65%                       1.50                    2.50

         Greater than or equal to 60%
         but less than 65%                                  0.75                    1.75
                                                                                  
         Greater than or equal to 55%
         but less than 60%                                  0.25                    1.25

         Less than 55%                                      0.00                    1.00
</TABLE>

         Notwithstanding the foregoing, (i) at all times that the Parent shall
have received an investment grade senior debt rating from two nationally known
agencies (one of which must be either Standard & Poor's Corporation or Moody's
Investors Service, Inc.) of BBB-/Baa3 (or the equivalent) and the
Debt/Capitalization Ratio shall be less than 50%, the Applicable Margin for
Alternate Base Rate Loans and Canadian Prime Rate Loans shall be 0% per annum
and the Applicable Margin for Eurodollar Loans shall be .75% per annum, (ii) at
all times that the Parent shall have received an investment grade senior debt
rating from two nationally known agencies (one of which must be either Standard
& Poor's Corporation or Moody's Investors





                                       3
<PAGE>   10
Service, Inc.) of BBB/Baa2 (or the equivalent) or better and the
Debt/Capitalization Ratio shall be less than 45%, the Applicable Margin for
Alternate Base Rate Loans and Canadian Prime Rate Loans shall be 0% per annum
and the Applicable Margin for Eurodollar Loans shall be .625% per annum, and
(iii) at all times that a Borrowing Base Deficiency shall exist and is
continuing for more than 30 days, the Applicable Margins provided for in this
definition shall each be increased by adding 1.00%; provided that the
Applicable Margin for Alternate Base Rate Loans and Canadian Prime Rate Loans
shall never exceed 2.50% and the Applicable Margin for Eurodollar Loans shall
never exceed 3.50%.  Each change in the Applicable Margin based on a change in
the Current Information shall be effective as of the fifteenth day of the month
during which the Current Information used to calculate the new Applicable
Margin was delivered to the Agent.

         "Applications" shall mean all applications and agreements for Letters
of Credit, or similar instruments or agreements, now or hereafter executed by
any Person in connection with any Letter of Credit now or hereafter issued or
to be issued.

         "Bank Guarantee" shall mean that certain Guarantee dated concurrently
herewith executed by the Parent in favour of the Administrative Agent.

         "Bankers' Acceptances" means bankers' acceptances issued by the
Company and denominated in Canadian Dollars, which are accepted and purchased
by the Banks at the request of the Company pursuant to Section 2.1.

         "B/A Stamping Rate" means, with respect to Bankers' Acceptances
accepted by a Bank, the Applicable Margin for Eurodollar Loans in effect on the
date of acceptance of the Bankers' Acceptance.

         "Bankruptcy Code" shall mean (i) the United States Bankruptcy Code, as
amended, and any successor statute and (ii) the Bankruptcy and Insolvency Act
(Canada), as amended, and any successor statute.

         "Beluga Financing Documents" shall mean that certain Inducement
Agreement and that certain Note Agreement (together with the Notes, as defined
therein), each dated June 17, 1985, and amended as of June 15, 1990, by and
among the Parent and The Equitable Life Assurance Society of the United States
and the Travelers Insurance Company, any documentation executed in connection
with any renewal, extension or rearrangement of the Indebtedness that is the
subject of the foregoing documents, the Gas Sales Contract, the Intercompany
Mortgage, as defined in the above-mentioned Note Agreement, and any documents
executed in replacement of any of the foregoing documents, if and only if the
Administrative Agent has received notice thereof pursuant to Section 10.8.

         "Borrowing Base" shall have the meaning ascribed to such term in the
U.S. Facility (without amendment except as permitted pursuant to the
Intercreditor Agreement).





                                       4
<PAGE>   11
         "Borrowing Base Debt" shall have the meaning ascribed to such term in
the U.S. Facility (without amendment except as permitted pursuant to the
Intercreditor Agreement).

         "Borrowing Base Deficiency" shall have the meaning ascribed to such
term in the U.S. Facility (without amendment except as permitted pursuant to
the Intercreditor Agreement).

         "Business Day" shall mean any day other than a day on which commercial
banks are authorized or required to close in Houston, Texas, United States,
Calgary, Alberta, Canada, or Toronto, Ontario, Canada, and where such term is
used in the definition of "Quarterly Date" in this Section 1.1 or if such day
relates to a borrowing of, a payment or prepayment of principal of or interest
on, or an Interest Period for, a Eurodollar Loan or a notice by the Company
with respect to any such borrowing, payment, prepayment or Interest Period, a
day which is also a day on which dealings in U.S. Dollar deposits are carried
out in the relevant interbank market.

         "Canadian Bankers' Acceptance Discount Proceeds" means, in respect of
any Bankers' Acceptance required to be accepted and purchased by a Bank
hereunder, an amount (rounded to the nearest whole cent with one-half of one
cent being rounded up) calculated on the date of acceptance of the Bankers'
Acceptance by multiplying:

         (a)     the face amount of such Bankers' Acceptance divided by one
                 hundred (100); by

         (b)     the price, where the price is determined by dividing one
                 hundred (100) by the sum of one plus the product of:

                 (i)      the Canadian Bankers' Acceptance Discount Rate
                          (expressed as a decimal); and

                 (ii)     a fraction, the numerator of which is the term
                          (expressed in days) of such Bankers' Acceptance and
                          the denominator of which is three hundred sixty-five
                          (365);

with the price as so determined being rounded up or down to the fifth decimal
place and .000005 being rounded up;

         "Canadian Bankers' Acceptance Discount Rate" shall mean, with respect
to each Bankers' Acceptance which is required to be accepted and purchased by a
Bank hereunder, the percentage discount rate (expressed to two decimal places)
for Canadian Dollar Bankers' Acceptances having a comparable issue and maturity
date which is quoted on the Reuter's Canadian Discount Offer Rate Screen for
"Schedule 1" accepting banks (or if such screen shall not be available, any
successor or similar  services may be selected by the Paying Agent and the
Company) as of 11:00 a.m. Toronto, Ontario time (or as soon thereafter as
practicable) on the day of acceptance of the Bankers' Acceptances.  If none of
such screen nor any successor or similar services is





                                       5
<PAGE>   12
available then the "Canadian Bankers' Acceptance Discount Rate" shall mean,
with respect to each Bankers' Acceptance which is required to be accepted and
purchased by a Bank hereunder, the percentage discount rate (expressed to two
decimal places) determined by the Paying Agent to be the average of the quoted
discount rates at which Canadian Dollar Bankers' Acceptances having a
comparable issue and maturity date are being bid for discount by the Reference
Banks at approximately 11:00 a.m. Toronto, Ontario time (or as soon thereafter
as practicable) on the day of the issuance and acceptance of the Bankers'
Acceptances.   If any Reference Bank does not furnish a timely quotation, the
Paying Agent shall determine the relevant discount rate on the basis of the
quotation or quotations furnished by the remaining Reference Bank or Banks; if
none of such quotations is available on a timely basis, the provisions of
Section 6.2 shall apply.  Each determination of the Canadian Bankers'
Acceptance Discount Rate shall be conclusive and binding, absent manifest
error, and may be computed using any reasonable averaging and attribution
method.

         "Canadian Dollars" and "Canadian $" shall mean lawful money of Canada.

         "Canadian Prime Rate" for any day shall mean the variable lending rate
of interest (expressed as a rate per annum) established on such day by the
Paying Agent from time to time as the reference rate of interest which the
Paying Agent employs in order to determine the interest rate it will charge for
demand loans denominated in Canadian Dollars to its customers in Canada and
which it designates as its prime rate.  Without notice to the Company or any
other Person, the Canadian Prime Rate shall change automatically from time to
time as and in the amount by which said prime rate shall fluctuate.  The
Canadian Prime Rate is a reference rate and does not necessarily represent the
lowest or best rate actually charged to any customer.  Any Agent or any Bank
may make commercial loans or other loans at rates of interest at, above or
below the Canadian Prime Rate.  For purposes of this Agreement any change in
the Canadian Prime Rate due to a change in the said prime rate shall be
effective on the date such change in said prime rate is announced.

         "Canadian Prime Rate Loans" shall mean Loans which bear interest at a
rate based upon the Canadian Prime Rate.

         "Capital Expenditures" shall mean expenditures in respect of fixed or
capital assets (calculated in accordance with GAAP) excluding expenditures for
the restoration, repair or replacement of any fixed or capital asset which was
destroyed or damaged, in whole or in part, to the extent financed by the
proceeds of an insurance policy.  Expenditures in respect of replacements and
maintenance consistent with the business practices of the Parent and its
Subsidiaries in respect of plant facilities, machinery, fixtures and other like
capital assets utilized in the ordinary course of business are not Capital
Expenditures to the extent such expenditures are not capitalized in preparing a
balance sheet of the Parent in accordance with GAAP.

         "Capital Lease Obligations" shall mean, as to any Person, the
obligations of such Person to pay rent or other amounts under a lease of (or
other agreement conveying the right to use)





                                       6
<PAGE>   13
real and/or personal property which obligations are required to be classified
and accounted for as a capital lease on a balance sheet of such Person under
GAAP and, for purposes of this Agreement, the amount of such obligations shall
be the capitalized amount thereof, determined in accordance with GAAP.

         "Capitalization" shall mean an amount equal to the sum of (a) Funded
Indebtedness of the Parent and its Subsidiaries on a consolidated basis plus
(b) Current Maturities of the Parent and its Subsidiaries on a consolidated
basis plus (c) borrowed money Indebtedness of the Parent and its Subsidiaries
on a consolidated basis that is not Funded Indebtedness plus (d) Indebtedness
of the Parent and its Subsidiaries on a consolidated basis constituting
obligations payable out of Hydrocarbons (except such obligations payable solely
by recourse to properties not included in the Borrowing Base) plus (e) Tangible
Net Worth of the Parent and its Subsidiaries on a consolidated basis.

         "Change of Control" shall mean a change resulting when any Unrelated
Person or any Unrelated Persons acting together which would constitute a Group
together with any Affiliates or Related Persons thereof (in each case also
constituting Unrelated Persons) shall at any time either (i) Beneficially Own
more than 50% of the aggregate voting power of all classes of Voting Stock of
the Parent or (ii) succeed in having sufficient of its or their nominees
elected to the Board of Directors of the Parent such that such nominees, when
added to any existing director remaining on the Board of Directors of the
Parent after such election who is an Affiliate or Related Person of such Person
or Group, shall constitute a majority of the Board of Directors of the Parent.
As used herein (a) "Beneficially Own" means "beneficially own" as defined in
Rule 13d-3 of the United States Securities Exchange Act of 1934, as amended, or
any successor provision thereto; provided, however, that, for purposes of this
definition, a Person shall not be deemed to Beneficially Own securities
tendered pursuant to a tender or exchange offer made by or on behalf of such
Person or any of such Person's Affiliates until such tendered securities are
accepted for purchase or exchange; (b) "Group" means a "group" for purposes of
Section 13(d) of the United States Securities Exchange Act of 1934, as amended;
(c) "Unrelated Person" means at any time any Person other than the Parent or
any Subsidiary and other than any trust for any employee benefit plan of the
Parent or any Subsidiary of the Parent; (d) "Related Person" of any Person
shall mean any other Person owning (1) 5% or more of the outstanding common
stock of such Person or (2) 5% or more of the Voting Stock of such Person; and
(e) "Voting Stock" of any Person shall mean capital stock of such Person which
ordinarily has voting power for the election of directors (or persons
performing similar functions) of such Person, whether at all times or only so
long as no senior class of securities has such voting power by reason of any
contingency.

         "Code" shall mean, as applicable, (i) the Internal Revenue Code of
1986, as amended, or any successor statute, together with all regulations,
rulings and interpretations thereof or thereunder by the Internal Revenue
Service or (ii) the Income Tax Act (Canada), as amended, or any successor
statute, together with all regulations, rulings and interpretations thereof or
thereunder.





                                       7
<PAGE>   14
         "Commitment Percentage" shall mean, as to any Bank, the percentage
equivalent of a fraction the numerator of which is the amount of such Bank's
Commitment and the denominator of which is the aggregate amount of the
Commitments of all Banks.

         "Commitments" shall mean, as to any Bank, the obligation, if any, of
such Bank to make Loans, accept and purchase Bankers' Acceptances and incur
Letter of Credit Liabilities in an aggregate principal amount (including
therein the full face amount of all Bankers' Acceptances then outstanding) at
any one time outstanding up to but not exceeding the amount, if any, set forth
opposite such Bank's name on the signature pages hereof under the caption
"Commitment" (as the same may be reduced from time to time pursuant to Section
2.3).

         "Cover" for Letter of Credit Liabilities shall be effected by paying
to the Paying Agent immediately available funds, to be held by the Paying Agent
in a collateral account maintained by Paying Agent at its Payment Office and
collaterally assigned as security for the financial accommodations extended
pursuant to this Agreement using documentation satisfactory to the
Administrative Agent, in an amount equal to any required prepayment.  Such
amount shall be retained by the Paying Agent in such collateral account until
such time as (x) in the case of Cover being provided pursuant to Section
2.2(a), the applicable Letter of Credit shall have expired and Reimbursement
Obligations, if any, with respect thereto shall have been fully satisfied or
(y) in the case of Cover being provided pursuant to Section 3.2(b)(1), the
outstanding principal amount of all Revolving Credit Obligations is not greater
than the aggregate amount of the Commitments.

         "Current Maturities" shall mean, on any day on which Current
Maturities are calculated, the sum of (a)  scheduled principal payments on
Funded Indebtedness which are payable within one (1) year after such day plus
(b) the principal component of payments required to be made with respect to
Capital Lease Obligations within one (1) year of said date plus (c), to the
extent not included above, all items which in accordance with GAAP would be
classified as current maturities of long term debt.

         "Debt/Capitalization Ratio" shall mean the ratio of (a) the sum of
Funded Indebtedness of the Parent and its Subsidiaries on a consolidated basis
plus Current Maturities of the Parent and its Subsidiaries on a consolidated
basis plus borrowed money Indebtedness of the Parent and its Subsidiaries on a
consolidated basis that is not Funded Indebtedness plus Indebtedness of the
Parent and its Subsidiaries on a consolidated basis constituting obligations
payable out of Hydrocarbons (except such obligations payable solely by recourse
to properties not included in the Borrowing Base) to (b) Capitalization.

         "Default" shall mean an Event of Default or an event which with notice
or lapse of time or both would, unless cured or waived, become an Event of
Default.

         "Disclosure Statement" shall mean the Disclosure Statement dated
concurrently herewith delivered to the Administrative Agent by the Company.





                                       8
<PAGE>   15
         "Dividend Payment" shall mean, with respect to any Person, dividends
(in cash, property or obligations) on, or other payments or distributions on
account of, or the redemption of, or the setting apart of money for a sinking
or other analogous fund for the purchase, redemption, retirement or other
acquisition of, any shares of any class of capital stock of such Person, or the
exchange or conversion of any shares of any class of capital stock of such
Person for or into any obligations of or shares of any other class of capital
stock of such Person or any other property, but excluding dividends payable
solely in, or exchanges or conversions for or into, shares of common stock of
the Parent or options or warrants to purchase common stock of the Parent.

         "Dividend Tests" shall mean compliance with each of the following
restrictions (both before and immediately after giving effect to the applicable
Dividend Payments):

                 (i)      Tangible Net Worth shall not be less than U.S.
                          $350,000,000;

                 (ii)     the EBITDA/Interest Ratio shall be not less than
                          3.5:1.0;

                 (iii)    the Debt/Capitalization Ratio shall be less than 60%;

                 (iv)     there shall exist no Borrowing Base Deficiency;

                 (v)      no Default or Event of Default shall have occurred
                          and be continuing; and

                 (vi)     the applicable Dividend Payment, when aggregated with
                          any prior permitted Dividend Payment, shall not
                          exceed the amount by which (a) 33-1/3% of net income
                          of the Parent and its Subsidiaries on a consolidated
                          basis for the period commencing on January 1, 1993
                          through the then current date exceeds (b) the
                          aggregate of any prior Investments made during such
                          period in excess of U.S. $30,000,000.

         "EBITDA" shall mean net earnings (excluding gains and losses on sales
and retirement of assets, non-cash write downs and charges resulting from
accounting convention changes) before deduction for federal, provincial,
municipal and state taxes, interest expense (including capitalized interest),
operating lease rentals or depreciation, depletion and amortization expense,
all determined in accordance with GAAP.

         "EBITDA/Interest Ratio" shall mean the ratio of (a) EBITDA of the
Parent and its Subsidiaries on a consolidated basis to (b) operating lease
rentals and interest expense (including capitalized interest) on all
Indebtedness of the Parent and its Subsidiaries on a consolidated basis for any
twelve-month period ending on the last day of every calendar quarter during the
period with respect to which the EBITDA/Interest Ratio is to be calculated.

         "Engineering Report" shall mean one or more reports, in form
satisfactory to the Administrative Agent and the Majority Banks, prepared by
one or more independent consulting





                                       9
<PAGE>   16
firms acceptable to the Administrative Agent and the Majority Banks in their
reasonable business judgment, which shall evaluate at least 85% of the present
value of the producing and non-producing proved oil and gas reserves of the
Parent and its Oil and Gas Subsidiaries as of the immediately preceding January
1.  Each Engineering Report shall set forth a projection of the future rate of
production, Net Proceeds of Production and present value of the Net Proceeds of
Production, in each case based upon economic assumptions acceptable to the
Administrative Agent and approved by the Majority Banks.

         "ENSTAR Alaska" shall collectively mean (i) the gas distribution
system in south-central Alaska known as ENSTAR Natural Gas Company, a division
of the Parent, and (ii) APC.

         "Environmental Claim" means any third party (including Governmental
Authorities and employees) action, lawsuit, claim or proceeding (including
claims or proceedings at common law or under the Occupational Safety and Health
Act or similar laws relating to safety of employees) which seeks to impose
liability for (i) noise; (ii) pollution or contamination of the air, surface
water, ground water or land or the clean-up of such pollution or contamination;
(iii) solid, gaseous or liquid waste generation, handling, treatment, storage,
disposal or transportation; (iv) exposure to Hazardous Substances; (v) the
safety or health of employees or (vi) the manufacture, processing, distribution
in commerce or use of Hazardous Substances.  An "Environmental Claim" includes,
but is not limited to, a common law action, as well as a proceeding to issue,
modify or terminate an Environmental Permit, or to adopt or amend a regulation
to the extent that such a proceeding attempts to redress violations of an
applicable permit, license, or regulation as alleged by any Governmental
Authority.

         "Environmental Liabilities" includes all liabilities arising from any
Environmental Claim, Environmental Permit or Requirement of Environmental Law
under any theory of recovery, at law or in equity, and whether based on
negligence, strict liability or otherwise, including but not limited to:
remedial, removal, response, abatement, investigative, monitoring, personal
injury and damage to property or injuries to persons, and any other related
costs, expenses, losses, damages, penalties, fines, liabilities and
obligations, and all costs and expenses necessary to cause the issuance,
reissuance or renewal of any Environmental Permit including reasonable
attorneys' fees and court costs.

         "Environmental Permit" means any permit, license, approval or other
authorization under any applicable Legal Requirement relating to pollution or
protection of health or the environment, including laws, regulations or other
requirements relating to emissions, discharges, releases or threatened releases
of pollutants, contaminants or hazardous substances or toxic materials or
wastes into ambient air, surface water, ground water or land, or otherwise
relating to the manufacture, processing, distribution, use, treatment, storage,
disposal, transport, or handling of pollutants, contaminants or Hazardous
Substances.

         "Equivalent U.S. Dollar Amount" shall mean, with respect to any amount
of Canadian Dollars, the equivalent amount of U.S.  Dollars determined by using
the Bank of Canada noon





                                       10
<PAGE>   17
day rate at which it offers to provide U.S. Dollars in exchange for such amount
of Canadian Dollars on the date as of which such Equivalent U.S. Dollar Amount
is to be determined.

         "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as amended from time to time, and all rules, regulations and
interpretations by the Internal Revenue Service or the Department of Labor
thereunder.

         "ERISA Affiliate" shall mean any trade or business (whether or not
incorporated) which is a member of a group of which the Parent is a member and
which is under common control within the meaning of the regulations under
Section 414 of the Code.

         "Eurodollar Base Rate" shall mean, with respect to any Interest Period
for any Eurodollar Loan, the lesser of (A) the rate per annum (rounded upwards,
if necessary, to the nearest 1/16th of 1%) equal to the average of the offered
quotations appearing on Telerate Page 3750 (or if such Telerate Page shall not
be available, any successor or similar service as may be selected by the Paying
Agent and the Company) as of 11:00 a.m., Toronto, Ontario time (or as soon
thereafter as practicable) on the day two Business Days prior to the first day
of such Interest Period for U.S. Dollar deposits having a term comparable to
such Interest Period and in an amount comparable to the principal amount of the
Eurodollar Loan to which such Interest Period relates or (B) the Highest Lawful
Rate.  If none of such Telerate Page 3750 nor any successor or similar service
is available, then the "Eurodollar Base Rate" shall mean, with respect to any
Interest Period for any applicable Eurodollar Loan, the lesser of (A) the rate
per annum (rounded upwards, if necessary, to the nearest 1/16th of 1%)
determined by the Paying Agent to be the average of the rates quoted by the
Reference Banks at approximately 11:00 a.m., Toronto, Ontario time (or as soon
thereafter as practicable) on the day two Business Days prior to the first day
of such Interest Period for the offering by such Reference Banks to leading
banks in the interbank market of U.S.  Dollar deposits having a term comparable
to such Interest Period and in an amount comparable to the principal amount of
the Eurodollar Loan to which such Interest Period relates or (B) the Highest
Lawful Rate.  If any Reference Bank does not furnish a timely quotation, the
Paying Agent shall determine the relevant interest rate on the basis of the
quotation or quotations furnished by the remaining Reference Bank or Banks; if
none of such quotations is available on a timely basis, the provisions of
Section 6.2 shall apply.  Each determination of the Eurodollar Base Rate shall
be conclusive and binding, absent manifest error, and may be computed using any
reasonable averaging and attribution method.

         "Eurodollar Loans" shall mean Loans the interest on which is
determined on the basis of rates referred to in the definition of "Eurodollar
Base Rate" in this Section 1.1.

         "Eurodollar Rate" shall mean, for any Interest Period for any
Eurodollar Loan, a rate per annum determined by the Paying Agent to be equal to
the Eurodollar Base Rate for such Loan for such Interest Period.

         "Event of Default" shall have the meaning assigned to such term in
Section 11 hereof.





                                       11
<PAGE>   18
         "Financial Statements" shall mean the financial statement or
statements, together with the notes and schedules thereto, described or
referred to in Sections 8.6 and 9.1.

         "Funded Indebtedness" shall mean all Indebtedness which by its terms
matures more than one (1) year from the date as of which any calculation of
Funded Indebtedness is made, and any Indebtedness maturing within one (1) year
from such date which is renewable at the option of the obligor to a date beyond
one (1) year from such date.

         "GAAP" shall mean as to a particular Person, such accounting practice
as, in the opinion of KPMG Peat Marwick or other independent accountants of
recognized national standing retained by such Person and acceptable to the
Majority Banks, conforms at the time to generally accepted accounting
principles, consistently applied.  Generally accepted accounting principles
means those principles and practices (a) which are recognized as such by the
Financial Accounting Standards Board, (b) which are applied for all periods
after the date hereof in a manner consistent with the manner in which such
principles and practices were applied to the most recent audited financial
statements of the relevant Person furnished to the Banks, except only for such
changes in principles and practices with which the applicable independent
public accountants concur and which are disclosed to the Banks in writing, and
(c) which are consistently applied for all periods after the date hereof so as
to reflect properly the financial condition and results of operations of such
Person.

         "Gas and Liquids Pipeline Subsidiaries" shall mean each company (which
may include the Parent) engaged in the Pipeline Operations.

         "Gas Sale Contract" shall mean that certain Gas Sale Contract dated
January 1, 1984, between APC, as Seller, and ENSTAR Natural Gas Company, as
Purchaser, as amended on June 17, 1985, and from time to time thereafter, if
and only if the Administrative Agent has received notice thereof pursuant to
Section 10.8.

         "Governmental Authority" shall mean any sovereign governmental
authority, Canada, the United States of America, any Province of Canada, any
State of the United States and any political subdivision of any of the
foregoing, and any central bank, agency, instrumentality, department,
commission, board, bureau, authority, court or other tribunal or
quasi-governmental authority in each case whether executive, legislative,
judicial, regulatory or administrative, having jurisdiction over the Parent,
any of its Subsidiaries, any of their respective property, any Agent or any
Bank.

         "Guarantee" by any Person means any obligation, contingent or
otherwise, of any such Person directly or indirectly guaranteeing any
Indebtedness of any other Person and, without limiting the generality of the
foregoing, any obligation, direct or indirect, contingent or otherwise, of such
Person (i) to purchase or pay (or advance or supply funds for the purchase or
payment of) such Indebtedness (whether arising by virtue of partnership
arrangements, by agreement to keep-well, to purchase assets, goods, securities
or services, to take-or-pay, or to





                                       12
<PAGE>   19
maintain financial statement conditions or otherwise, other than agreements to
purchase assets, goods, securities or services at an arm's length price in the
ordinary course of business) or (ii) entered into for the purpose of assuring
in any other manner the holder of such Indebtedness of the payment thereof or
to protect such holder against loss in respect thereof (in whole or in part),
provided that the term "Guarantee" shall not include endorsements for
collection or deposit in the ordinary course of business.  The term "Guarantee"
used as a verb has a corresponding meaning.

         "Hazardous Substance" shall mean petroleum products, and any hazardous
or toxic waste or substance defined or regulated as such from time to time by
any law, rule, regulation or order described in the definition of "Requirements
of Environmental Law".

         "Highest Lawful Rate" shall mean, on any day, the maximum nonusurious
rate of interest permitted for that day by whichever of applicable Canadian or
provincial law permits the higher interest rate, stated as a rate per annum.

         "Hydrocarbons" shall mean oil, gas, casinghead gas, drip gasoline,
natural gasoline, condensate and all other liquid or gaseous hydrocarbons and
related minerals, in each case whether in a natural or a processed state.

         "Indebtedness" shall mean, as to any Person:  (i) indebtedness of such
Person for borrowed money (whether by loan or the issuance and sale of debt
securities) or for the deferred purchase or acquisition price of property or
services, including, without limitation, obligations (excluding volumetric
obligations with respect to pre-sales of Hydrocarbon production which have
already been accounted for in the calculation of the Borrowing Base) payable
out of Hydrocarbon production; (ii) obligations, whether fixed or contingent,
of such Person in respect of letters of credit, acceptances or similar
instruments issued or accepted by banks and other financial institutions for
the account of such Person or any other Person; (iii) Capital Lease Obligations
of such Person; (iv) Redemption Obligations of such Person and other
obligations of such Person to redeem or otherwise retire shares of capital
stock of such Person or any other Person; (v) indebtedness of others of the
type described in clause (i), (ii), (iii) or (iv) above secured by a Lien on
the property of such Person, whether or not the respective obligation so
secured has been assumed by such Person; and (vii) indebtedness of others of
the type described in clause (i), (ii), (iii) or (iv) above Guaranteed by such
Person.

         "Intercreditor Agreement" shall mean that certain Intercreditor
Agreement dated concurrently herewith executed by and among the Company, the
Parent, the Administrative Agent and the "Administrative Agent" under the U.S.
Facility.





                                       13
<PAGE>   20
         "Interest Period" shall mean:

         (a)     With respect to any Eurodollar Loan, the period commencing on
(i) the date such Loan is made or converted into or continued as a Eurodollar
Loan or (ii) in the case of a roll-over to a successive Interest Period, the
last day of the immediately preceding Interest Period and ending on the
numerically corresponding day in the first, second, third or sixth calendar
month thereafter, as the Company may select as provided in Section 3.3 hereof,
except that each such Interest Period which commences on any day for which
there is no numerically corresponding day in the appropriate subsequent
calendar month shall end on the last Business Day of the appropriate subsequent
calendar month.

         (b)     With respect to any Alternate Base Rate Loan or any Canadian
Prime Rate Loan, the period commencing on the date such Loan is made and ending
on the next succeeding Quarterly Date.

Notwithstanding the foregoing:  (i) no Interest Period with respect to a
Eurodollar Loan may commence before and end after the date of any scheduled
reduction in the Commitments if, after giving effect thereto, the aggregate
principal amount of the Eurodollar Loans having Interest Periods which end
after such reduction date shall be greater than the aggregate principal amount
of the Commitments scheduled to be in effect after such reduction date; (ii)
each Interest Period which would otherwise end on a day which is not a Business
Day shall end on the next succeeding Business Day (or, in the case of an
Interest Period for Eurodollar Loans, if such next succeeding Business Day
falls in the next succeeding calendar month, on the next preceding Business
Day); (iii) no Interest Period with respect to a Eurodollar Loan shall extend
beyond the end of the scheduled Revolving Credit Availability Period; and (iv)
no Interest Period for any Eurodollar Loans shall have a duration of less than
one month and, if the Interest Period therefor would otherwise be a shorter
period, such Loans shall not be available hereunder.

         "Investments" shall have the meaning assigned to such term in Section
10.3 hereof.

         "Investments Tests" shall mean compliance with each of the following
restrictions (both before and immediately after giving effect to the applicable
Investments):

                 (i)      there shall exist no Borrowing Base Deficiency;

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

                 (iii)    the applicable Investment, when aggregated with any
                          prior permitted Investments, shall not exceed the
                          greater of (I) 10% of Tangible Net Worth of the
                          Parent and its Subsidiaries on a consolidated basis
                          or (II) the sum of (a) U.S. $30,000,000 plus (b) the
                          amount, if any, by which 33-1/3% of net income of the
                          Parent and its Subsidiaries on a consolidated basis
                          for the period commencing on January 1, 1993 through
                          the then





                                       14
<PAGE>   21
                          current date exceeds the aggregate of any prior 
                          Dividend Payments made during such period.

         "Issuer" shall mean each Bank issuing a Letter of Credit hereunder.

         "Key Contracts" shall mean all contracts, permits, licenses and other
rights acquired by the Parent and its Subsidiaries from third parties or each
other and from time to time material to the ownership of assets, or operations,
of the Parent and its Subsidiaries.

         "Legal Requirement" shall mean any law, statute, ordinance, decree,
requirement, order, judgment, rule, regulation (or interpretation of any of the
foregoing) of, and the terms of any license or permit issued by, any
Governmental Authority, now or hereafter in effect.

         "Letter of Credit" shall have the meaning assigned to such term in
Section 2.2 hereof.

         "Letter of Credit Fee" shall mean a per annum rate equal to the
Applicable Margin for Eurodollar Loans in effect from time to time.

         "Letter of Credit Liabilities" shall mean, at any time and in respect
of any Letter of Credit, the sum of (i) the amount available for drawings under
such Letter of Credit plus (ii) the aggregate unpaid amount of all
Reimbursement Obligations at the time due and payable in respect of previous
drawings made under such Letter of Credit.

         "Lien" shall mean, with respect to any asset, any mortgage, lien,
pledge, charge, collateral assignment, security interest or encumbrance of any
kind in respect of such asset.  For the purposes of this Agreement, a Person
shall be deemed to own subject to a Lien any asset which it has acquired or
holds subject to the interest of a vendor or lessor under any conditional sale
agreement, capital lease or other title retention agreement relating to such
asset.

         "Liquid Investments" shall mean:

         (I) in the case of investments of U.S. Dollars

                 (i)      securities issued or directly, fully and
                          unconditionally guaranteed or insured by the United
                          States of America or any agency or instrumentality
                          thereof provided that the full faith and credit of
                          the United States of America is pledged in support
                          thereof) having maturities of not more than one year
                          from the date of issue;

                 (ii)     U.S. Dollar time deposits and certificates of deposit
                          (A) of any Bank having capital and surplus in excess
                          of U.S. $300,000,000, or (B) of any commercial bank
                          incorporated in the United States, of recognized
                          standing, having capital and surplus in excess of
                          U.S. $500,000,000 and





                                       15
<PAGE>   22
                          which has (or which is a Subsidiary of a holding 
                          company which has) publicly traded debt securities 
                          rated, at the time of issuance of such time deposits, 
                          AA or higher by Standard & Poor's Corporation or Aa-2
                          or higher by Moody's Investors Service, Inc. with 
                          maturities of not more than one year from the date of 
                          issue;

                 (iii)    repurchase obligations with a term of not more than
                          seven days for underlying securities of the types
                          described inclause (I)(i) above entered into with any
                          bank meeting the qualifications specified in clause
                          (I)(ii)above, provided that the terms of such
                          agreements comply with the guidelines set forth in
                          the Federal Financial Institution Examination Counsel
                          Supervisory Policy--Repurchase Agreements of
                          Depository Institutions With Securities Dealers and
                          Others, as adopted by the Comptroller of the Currency
                          on October 31, 1985;

                 (iv)     commercial paper or other U.S. Dollar obligations
                          issued by the parent corporation (A) of any Bank
                          having capital and surplus in excess of U.S.
                          $300,000,000, or (B) of any commercial bank (provided
                          that the parent corporation and the bank are both
                          incorporated in the United States) of recognized
                          standing having capital and surplus in excess of U.S.
                          $500,000,000 and commercial paper or other U.S.
                          Dollar obligations issued by any Person incorporated
                          in the United States, which commercial paper is rated
                          at least A-2 or the equivalent thereof by Standard &
                          Poor's Corporation or at least P-2 or the equivalent
                          thereof by Moody's Investors Service, Inc. and in
                          each case maturing not more than six months after the
                          date of issue;

                 (v)      obligations of any state or political subdivision
                          thereof rated at least F-1 by Fitch Investors
                          Service, Inc. or AA by Standard & Poor's Corporation
                          with an original maturity of 180 days or less; and

                 (vi)     investments in money market funds substantially all
                          the assets of which are comprised of securities of
                          the types described inclauses (I)(i) through (v)
                          above; and

         (II) in the case of investments of Canadian dollars

                 (i)      bonds or other evidences of indebtedness of, or the
                          principal and interest of which is fully guaranteed
                          by, the Government of Canada or any province of
                          Canada, payable in Canadian dollars and (in the case
                          of any provincial obligations and any Government of
                          Canada obligations that are rated) rated AAA or AA
                          (or the then equivalent grade) by Dominion Bond





                                       16
<PAGE>   23
                          Rating Service Limited, or any other nationally 
                          recognized bond rating service, having a maturity 
                          not in excess of one year,

                 (ii)     certificates of deposit issued or guaranteed by a
                          bank or trust company organized under the laws of
                          Canada or any province thereof, provided such bank or
                          trust company has capital and retained earnings in
                          the aggregate in excess of Canadian $500,000,000 on
                          its most recent balance sheet (whether audited or
                          unaudited), having a maturity not in excess of one
                          year,

                 (iii)    bankers' acceptances of any bank or trust company the
                          certificates of deposit of which would constitute
                          Liquid Investments as provided in clause (II)(ii)
                          above, if outstanding unsecured debt of such bank or
                          trust company is rated no less than AA (or the then
                          equivalent grade) by Dominion Bond Rating Service
                          Limited, or any other nationally recognized bond
                          rating service; and

                 (iv)     commercial paper rated no less than R-1 (or the then
                          equivalent grade) by Dominion Bond Rating Service
                          Limited or A-1 (or the then equivalent grade) by CBRS
                          Inc., having a maturity not in excess of one year;
                          excluding any bonds or other evidences of
                          indebtedness, certificates of deposit or commercial
                          paper which a Canadian chartered bank may not hold as
                          security under the Bank Act (Canada).

         "Loan Documents" shall mean this Agreement, the Notes, the Bank
Guarantee, the Intercreditor Agreement, the Bankers' Acceptances, all
Applications, all instruments, certificates and agreements now or hereafter
executed or delivered to any Agent or any Bank pursuant to any of the
foregoing, and all amendments, modifications, renewals, extensions, increases
and rearrangements of, and substitutions for, any of the foregoing.

         "Loans" shall mean the loans provided for by Section 2.1 hereof.

         "Majority Banks" shall mean Banks having greater than 66-2/3% of the
aggregate amount of Commitments.

         "Material Adverse Effect" shall mean a material adverse effect on the
business, condition (financial or otherwise), operations, properties (including
proven oil and gas reserves) or prospects of the Parent and its Subsidiaries,
taken as a whole, or on the ability of any Relevant Party to perform its
material obligations under any Loan Document to which it is a party.

         "Maximum Outstanding Amount" shall have the meaning ascribed to such
term in Section 2.9 hereof.





                                       17
<PAGE>   24
         "Maximum Revolving Credit Available Amount" shall mean, at any date,
an amount equal to the lesser of (i) the aggregate of the Commitments or (ii)
the Maximum Outstanding Amount designated from time to time by the Company in
accordance with the terms hereof.

         "Mesa Contract" shall mean that certain Purchase and Sale Agreement
dated February 6, 1991 executed by and among Mesa Limited Partnership, a
Delaware limited partnership, Mesa Operating Limited Partnership, a Delaware
limited partnership, and Mesa Midcontinent Limited Partnership, a Delaware
limited partnership, as Sellers, and the Parent, as Buyer, as amended by that
certain First Amendment to Purchase and Sale Agreement dated February 22, 1991
and as further amended by that certain Second Amendment to Purchase and Sale
Agreement dated March 8, 1991.

         "Midcon" shall mean Seagull Midcon Inc., a Delaware corporation.

         "Net Proceeds of Production" shall mean, with respect to any Person,
all revenue received by or credited to the account of such Person from the sale
of Hydrocarbons and other minerals in, under or produced from their respective
oil, gas and mineral properties after deducting royalties, overriding
royalties, volumetric production payments with respect to pre-sales of
Hydrocarbon production, production payments pledged to secure non-recourse
financing payable solely out of such production payments, net profits interests
and other burdens payable out of production, normal and reasonable operating
expenses and severance, ad valorem, excise, freehold mineral and windfall
profit taxes.

         "Notes" shall mean the promissory notes of the Company evidencing the
Loans, in the form of Exhibit C hereto, together with all renewals, extensions,
modifications and replacements thereof and substitutions therefor.

         "Novalta" shall mean Novalta Resources Inc., a corporation
incorporated under the laws of the Province of Alberta.

         "Novalta Contract" shall mean that certain Sale Agreement dated
November 19, 1993 executed by and between Novacor Petrochemicals Ltd., as
Vendor, and the Parent, as Purchaser.

         "Obligations" shall mean, as at any date of determination thereof, the
sum of the following:  (i) the aggregate principal amount of Loans outstanding
hereunder plus (ii) the aggregate face amount of all outstanding Bankers'
Acceptances plus (iii) the aggregate amount of the Letter of Credit Liabilities
hereunder plus (iv) all other liabilities, obligations and indebtedness of the
Parent or any Subsidiary of the Parent under any Loan Document.

         "Oil and Gas Subsidiaries" shall mean any Subsidiary of the Parent
whose assets consist primarily of oil and gas properties.  As of the date
hereof, the Oil and Gas Subsidiaries are listed as such on Exhibit A hereto.





                                       18
<PAGE>   25
         "Organizational Documents" shall mean, with respect to a corporation,
the certificate of incorporation, articles of incorporation and bylaws of such
corporation; with respect to a partnership, the partnership agreement
establishing such partnership; with respect to a joint venture, the joint
venture agreement establishing such joint venture, and with respect to a trust,
the instrument establishing such trust; in each case including any and all
modifications thereof as of the date of the Loan Document referring to such
Organizational Document.

         "Parent" shall mean Seagull Energy Corporation, a Texas corporation.

         "Parent Report" shall mean one or more reports, in form satisfactory
to the Administrative Agent and the Majority Banks, prepared by petroleum
engineers employed by the Parent or its Subsidiaries, which shall evaluate (i)
at least 85% of the present value of the producing and non-producing proved oil
and gas reserves of the Parent and its Oil and Gas Subsidiaries evaluated in
the most recent Engineering Report delivered pursuant hereto and (ii) any other
properties as to which the Parent has conducted successful exploration
activities subsequent to the most recent Engineering Report, in each case
effective as of the immediately preceding July 1.  Each Parent Report shall set
forth production, drilling and acquisition information and other information
requested by the Administrative Agent and shall be based upon updated economic
assumptions acceptable to the Administrative Agent and approved by the Majority
Banks at the beginning of the applicable year.

         "Payment Office" shall mean the Toronto, Ontario office of the Paying
Agent, presently located at The Bank of Nova Scotia, International Banking
Division-Loan Accounting, 14th Floor, 44 King Street West, Toronto, Ontario,
Canada  M5H 1H1.

         "PBGC" shall mean the Pension Benefit Guaranty Corporation or any
entity succeeding to any or all of its functions under ERISA.

         "Person" shall mean an individual, a corporation, a company, a bank, a
voluntary association, a partnership, a trust, an unincorporated organization,
any Governmental Authority or any other entity.

         "Plan" shall mean an employee pension benefit plan which is covered by
Title IV of ERISA or subject to the minimum funding standards under Section 412
of the Code and is either (a) maintained by the Parent or any ERISA Affiliate
for employees of the Parent or any ERISA Affiliate or (b) maintained pursuant
to a collective bargaining agreement or any other arrangement under which more
than one employer makes contributions and to which the Parent or any ERISA
Affiliate is then making or accruing an obligation to make contributions or has
within the preceding five plan years made contributions.

         "Post-Default Rate" shall mean, in respect of any principal of any
Loan, any Reimbursement Obligation or any other amount payable by the Company
under this Agreement or any other Loan Document which is not paid when due
(whether at stated maturity, by acceleration,





                                       19
<PAGE>   26
or otherwise), a rate per annum during the period commencing on the due date
until such amount is paid in full equal to the lesser of (a) the sum of (w)
with respect to Eurodollar Loans, 2% per annum plus the applicable Eurodollar
Rate then in effect plus the Applicable Margin for Eurodollar Loans until the
expiration of the applicable Interest Period, (x) with respect to Canadian
Prime Rate Loans, 2% per annum plus the applicable Canadian Prime Rate as in
effect from time to time plus the Applicable Margin for Canadian Prime Rate
Loans, and (y) with respect to Alternate Base Rate Loans and with respect to
Eurodollar Loans after the expiration of the applicable Interest Period (and
also with respect to indebtedness other than Loans), 2% plus the Alternate Base
Rate as in effect from time to time plus the Applicable Margin for Alternate
Base Rate Loans or (b) the Highest Lawful Rate.

         "Quarterly Dates" shall mean the last day of each March, June,
September and December, provided that, if any such date is not a Business Day,
then the relevant Quarterly Date shall be the next succeeding Business Day.

         "Quarterly Equivalent" shall mean, as of any date, the Bank of Canada
noon day rate at which it offers to provide U.S.  Dollars in exchange for
Canadian Dollars on the later of (i) the last Business Day immediately
preceding the then current calendar quarter or (ii) the last Business Day
immediately preceding the most recent revision of the Maximum Outstanding
Amount pursuant to Section 2.9.

         "Redemption Obligations" shall mean with respect to any Person all
mandatory redemption obligations of such Person with respect to preferred stock
or other equity securities issued by such Person or put rights in favour of the
holder of such preferred stock or other equity securities.

         "Reference Banks" shall mean The Bank of Nova Scotia and Chemical Bank
of Canada and such other Banks (up to a maximum of two (2) additional Banks) as
the Company, with the approval of the Paying Agent (which approval shall not be
unreasonably withheld), may from time to time designate.

         "Regulation D" shall mean Regulation D of the Board of Governors of
the Federal Reserve System as the same may be amended or supplemented from time
to time and any successor or other regulation relating to reserve requirements.

         "Regulatory Change" shall mean, with respect to any Bank, any change
on or after the date of this Agreement in Legal Requirements (including
Regulation D) or the adoption or making on or after such date of any
interpretation, directive or request applying to a class of banks including
such Bank under any Legal Requirements (whether or not having the force of law)
by any Governmental Authority.

         "Reimbursement Obligations" shall mean, as at any date, the
obligations of the Company then outstanding in respect of Letters of Credit
under this Agreement, to reimburse the Paying





                                       20
<PAGE>   27
Agent for the account of the applicable Issuer for the amount paid by the
applicable Issuer in respect of any drawing under such Letter of Credit.

         "Relevant Party" shall mean the Company, the Parent and each other
party to any of the Loan Documents other than (a) the Banks and (b) the Agents.

         "Request for Extension of Credit" shall mean a request for extension
of credit duly executed by the chief executive officer, chief financial
officer, or treasurer of the Company, appropriately completed and substantially
in the form of Exhibit B attached hereto.

         "Requirements of Environmental Law" means all requirements imposed by
any law (including for example and without limitation The Resource Conservation
and Recovery Act (U.S.) and The Comprehensive Environmental Response,
Compensation, and Liability Act (U.S.), the Environmental Protection and
Enhancement Act (Alberta) and the Canadian Environmental Protection Act), rule,
regulation, or order of any federal, state, provincial or local executive,
legislative, judicial, regulatory or administrative agency, board or authority
in effect at the applicable time which relate to (i) noise; (ii) pollution,
protection or clean-up of the air, surface water, ground water or land; (iii)
solid, gaseous or liquid waste generation, treatment, storage, disposal or
transportation; (iv) exposure to Hazardous Substances; (v) the safety or health
of employees or (vi) regulation of the manufacture, processing, distribution in
commerce, use, discharge or storage of Hazardous Substances.

         "Reserve Requirement" shall mean, for any Eurodollar Loan for any
Interest Period therefor, the stated maximum rate for all reserves (including
any marginal, supplemental or emergency reserves) required to be maintained
during such Interest Period under applicable Legal Requirements by any Bank
against eurocurrency liabilities.  Without limiting the effect of the
foregoing, the Reserve Requirement shall reflect and include any other reserves
required to be maintained by any Bank by reason of any Regulatory Change
against (i) any category of liabilities which includes deposits by reference to
which the Eurodollar Rate is to be determined as provided in the definition of
"Eurodollar Base Rate" in this Section 1.1 or (ii) any category of extensions
of credit or other assets which include Eurodollar Loans.  Any determination by
the Paying Agent of the Reserve Requirement shall be conclusive and binding,
absent manifest error, and may be made using any reasonable averaging and
attribution method.

         "Responsible Officer" shall mean the chairman of the board, the
president, any executive vice president, the vice president of finance and
administration, the chief executive officer or the chief operating officer or
any equivalent officer (regardless of title) and in the case of the Company,
any other vice president, and in respect of financial or accounting matters,
shall also include the chief financial officer, the treasurer and the
controller or any equivalent officer (regardless of title).





                                       21
<PAGE>   28
         "Revolving Credit Availability Period" shall mean the period from and
including the date hereof to but not including December 31, 1999 or the date
the Commitments are terminated pursuant to Section 11.1, whichever is first to
occur.

         "Revolving Credit Commitment Fee Percentage" shall mean (i) for any
day that the Debt/Capitalization Ratio shall be less than 60%, .375% per annum
and (ii) at all other times, .50% per annum.

         "Revolving Credit Obligations" shall mean, as at any date of
determination thereof, the sum of the following (determined without
duplication):  (i) the aggregate principal amount of Loans outstanding
hereunder plus (ii) the aggregate of the face amounts of all outstanding
Bankers' Acceptances plus (iii) the aggregate amount of the Letter of Credit
Liabilities hereunder.

         "Senior Debt" shall mean Indebtedness having a weighted average
maturity at least seven (7) years from the date of issuance and having no
conditions precedent or covenants materially more onerous to the Parent than
the conditions precedent and covenants contained herein and in the other Loan
Documents with respect to the Loans.  The documents evidencing any Senior Debt
shall contain a provision substantially identical to Section 10.2(y) hereof
permitting Liens securing the Notes and the other Obligations on a pari passu
basis with such Senior Debt.

         "Subordinated Debt" shall mean Indebtedness of the Parent having a
weighted average maturity at least seven (7) years from the date of issuance
and having no conditions precedent or covenants materially more onerous to the
Parent than the conditions precedent and covenants contained in the U.S.
Facility, in this Agreement and in the other Loan Documents with respect to the
Loans and which is expressly made subordinate and junior in right of payment to
the Obligations and in respect of any collateral or security by the express
terms of the instruments evidencing the Subordinated Debt or the indenture or
other similar instrument under which the Subordinated Debt is issued (which
indenture or other instrument will be binding on all holders of such
Subordinated Debt), by provisions not more favourable to the holders of the
Subordinated Debt than the following:

         (a)     in the event a Default exists and is continuing, no payment of
principal or interest will be made on account of Subordinated Debt and no
remedy for default shall be exercised until (i) such Default will have been
cured or waived or until the Obligations will have been paid in full (or
provisions made therefor reasonably satisfactory to the Banks) or (ii) 179 days
after the occurrence of such Default (as to which the Banks have knowledge as a
result of having received notice from the Company pursuant to this Agreement or
otherwise) and no action being taken by the Banks with respect to such Default,
whichever occurs earlier;

         (b)     upon the occurrence of any of the events or proceedings
specified in Subsections 11.1(f) or (g) hereof (or, as to any Subsidiary of the
Parent, Subsection 11.1(j) to the extent that it refers to Subsections 11.1(f)
or (g)), the holders of any Obligations will be entitled





                                       22
<PAGE>   29
to receive payment in full of all principal or interest on all Obligations
before the holders of the Subordinated Debt are entitled to receive any payment
on account of principal or interest on the Subordinated Debt, and to that end
(but subject to the power of a court of competent jurisdiction to make other
provision) the holders of the Obligations will be entitled to receive
distributions of any kind or character, whether in cash or property or
securities (other than equity securities and other securities establishing
rights in the holders thereof which are subordinate to the rights of the
holders of the Obligations in accordance with this definition of Subordinated
Debt), which may be or would otherwise be payable or deliverable in any such
proceedings in respect of the Subordinated Debt (provided that, the
Subordinated Debt may provide that if the Obligations have been paid in full or
provision therefor reasonably satisfactory to the Banks has been made, the
holders of the Subordinated Debt will be subrogated to the rights of the
holders of the Obligations);

         (c)     in the event that any Subordinated Debt is declared due and
payable before its expressed maturity because of the occurrence of an event of
default thereunder (under circumstances when the provisions of the foregoing
clauses (a) and (b) will not be applicable), the holders of the Obligations at
the time such Subordinated Debt becomes due and payable because of such an
event of default will be entitled to receive payment in full of all Obligations
(or have provision therefor satisfactory to the Banks made) before the holders
of the Subordinated Debt are entitled to receive any payment on account of the
principal or interest on the Subordinated Debt; and

         (e)     no holder of the Obligations will be prejudiced in its right
to enforce subordination of the Subordinated Debt by any act or failure to act
on the part of the Parent or the part of the holders of the Obligations;

provided that, the Subordinated Debt may provide that the foregoing provisions
are solely for the purpose of defining the relative rights of the holders of
the Obligations on the one hand, and the holders of the Subordinated Debt on
the other hand, and that nothing therein will impair, as between the Parent and
the holders of the Subordinated Debt, the obligation of the Parent, which may
be unconditional and absolute, to pay to the holders of the Subordinated Debt
the principal and interest thereon in accordance with its terms, nor will
anything herein prevent the holders of the Subordinated Debt from exercising
all remedies otherwise permitted by applicable law or thereunder upon default
thereunder, subject to the rights under clauses (a), (b) and (c) above of the
holders of the Obligations to receive cash, property or securities otherwise
payable or deliverable to the holders of the Subordinated Debt.

         "Subsidiary" shall mean, with respect to any Person (the "parent"),
(a) any corporation of which at least a majority of the outstanding shares of
stock having by the terms thereof ordinary voting power to elect a majority of
the board of directors of such corporation (irrespective of whether or not at
the time stock of any other class or classes of such corporation shall have or
might have voting power by reason of the happening of any contingency) is at
the time directly or indirectly owned or controlled by the parent or one or
more of the Subsidiaries





                                       23
<PAGE>   30
of the parent or by the parent and one or more of the Subsidiaries of the
parent, and (b) any partnership, limited partnership, joint venture or other
form of entity, the majority of the legal or beneficial ownership of which is
at the time directly or indirectly owned or controlled by the parent or one or
more of the Subsidiaries of the parent or by the parent and one or more of the
Subsidiaries of the parent.

         "Tangible Net Worth" shall mean the sum of preferred stock, par value
of common stock, capital in excess of par value of common stock (additional
paid-in capital) and retained earnings, less treasury stock, goodwill, deferred
development costs, franchises, licenses, patents, trademarks and copyrights and
all other assets which are properly classified as intangible assets in
accordance with GAAP less any Redemption Obligations.

         "Type" shall have the meaning assigned to such term in Section 1.3
hereof.

         "Unfunded Liabilities" shall mean, with respect to any Plan, at any
time, the amount (if any) by which (a) the present value of all benefits under
such Plan exceeds (b) the fair market value of all Plan assets allocable to
such benefits, all determined as of the then most recent actuarial valuation
report for such Plan, but only to the extent that such excess represents a
potential liability of any ERISA Affiliate to the PBGC or a Plan under Title IV
of ERISA.

         "U.S. Dollars" and "U.S. $" shall mean lawful money of the United
States of America.

         "U.S. Facility" shall mean that certain Amended and Restated Credit
Agreement dated June 25, 1993 executed by and among the Parent, Texas Commerce
Bank National Association, as Administrative Agent, and certain banks therein
named, as amended by First Amendment to Amended and Restated Credit Agreement
dated concurrently herewith and as amended by the Intercreditor Agreement.

         1.2     Accounting Terms and Determinations.  Unless otherwise
specified herein, all accounting terms used herein shall be interpreted, all
determinations with respect to accounting matters hereunder shall be made, and
all financial statements and certificates and reports as to financial matters
required to be delivered hereunder shall be prepared, in accordance with GAAP.
To enable the ready determination of compliance with the provisions hereof, the
Parent will not change from December 31 in each year the date on which its
fiscal year ends, nor from March 31, June 30 and September 30 the dates on
which the first three fiscal quarters in each fiscal year end.

         1.3     Types of Loans.  Loans hereunder are distinguished by "Type".
The "Type" of a Loan refers to the determination whether such Loan is a
Eurodollar Loan, an Alternate Base Rate Loan or a Canadian Prime Rate Loan.

         1.4     Miscellaneous.  The words "hereof", "herein" and "hereunder"
and words of similar import when used in this Agreement shall refer to this
Agreement as a whole and not to





                                       24
<PAGE>   31
any particular provision of this Agreement.  Any reference to Sections shall
refer to Sections of this Agreement.  Whenever it is necessary to convert an
amount denominated in Canadian Dollars to U.S. Dollars, such as calculating the
aggregate outstanding principal amount of the Revolving Credit Obligations,
such conversion shall be effected using the Equivalent U.S. Dollar Amount or,
where applicable, the Quarterly Equivalent.  Unless payments are otherwise
required by the terms of this Agreement or by any other applicable Loan
Document to be made in U.S. Dollars or Canadian Dollars, such payment shall be
made in U.S. Dollars or in Canadian Dollars converted by using the Equivalent
U.S. Dollar Amount as of the date of such payment calculated, where applicable,
using the Quarterly Equivalent.

         SECTION 2.       COMMITMENTS; DESIGNATION OF MAXIMUM OUTSTANDING
AMOUNT.

         2.1     Loans and Bankers' Acceptances.  From time to time on or after
the date hereof and during the Revolving Credit Availability Period, each Bank
shall:

         (a)     make Loans under this Section 2.1, in Canadian Dollars or U.S.
                 Dollars, to the Company; and

         (b)     accept and purchase Bankers' Acceptances and deliver the
                 Canadian Bankers' Acceptance Discount Proceeds (less the
                 applicable acceptance fees payable by the Company to such Bank
                 pursuant to Sections 4.3) in respect thereof for the account
                 of the Company through the Paying Agent at the Payment Office,

in an aggregate principal amount (including therein the aggregate face amount
of any outstanding Bankers' Acceptances) at any one time outstanding (including
its Commitment Percentage of all Letter of Credit Liabilities at such time) up
to but not exceeding such Bank's Commitment Percentage of the Maximum Revolving
Credit Available Amount.  Subject to the conditions herein, any such Loan or
Bankers' Acceptance repaid prior to the end of the Revolving Credit
Availability Period may be reborrowed or reissued, as the case may be, pursuant
to the terms of this Agreement; provided, that any and all such Loans and the
full face amount of all outstanding Bankers' Acceptances shall be due and
payable in full at the end of the Revolving Credit Availability Period.  For
purposes of determining the amount available for borrowing hereunder (or the
maximum availability for the issuance of Bankers' Acceptances or Letters of
Credit), the Equivalent U.S. Dollar Amount as of the Business Day preceding the
Loan request, Bankers' Acceptance Request or Letter of Credit request shall be
used to determine availability hereunder, rather than the Quarterly Equivalent.

         2.2     Letters of Credit.

         (a)     Letters of Credit.  Subject to the terms and conditions
hereof, and on the condition that aggregate Letter of Credit Liabilities shall
never exceed U.S. $10,000,000, the Company shall have the right, in addition to
Loans provided for in Section 2.1 hereof, to utilize the Commitments from time
to time from and after the date hereof through the expiration of the





                                       25
<PAGE>   32
Revolving Credit Availability Period by obtaining the issuance of letters of
credit for the account of the Company and on behalf of the Company by the
applicable Issuer if the Company shall so request in the notice referred to in
Section 2.2(b)(i) (such letters of credit being collectively referred to as the
"Letters of Credit").  Letters of Credit may, upon written request of the
Company, be denominated in Canadian Dollars and if so all payments and fees
with respect thereto shall be paid in Canadian Dollars.  Upon the date of the
issuance of a Letter of Credit, the applicable Issuer shall be deemed, without
further action by any party hereto, to have sold to each Bank, and each Bank
shall be deemed, without further action by any party hereto, to have purchased
from the applicable Issuer, a participation, to the extent of such Bank's
Commitment Percentage, in such Letter of Credit and the related Letter of
Credit Liabilities.  No Letter of Credit issued pursuant to this Agreement
shall have an expiry date later than one (1) year from date of issuance,
provided that any Letter of Credit having an expiry date after the end of the
Revolving Credit Availability Period shall have been fully Covered or shall be
backed by a letter of credit in form and substance, and issued by an issuer,
acceptable to the Administrative Agent in its reasonably exercised discretion.
Subject to the terms and conditions hereof, upon the request of the Company, if
BNS is the designated Issuer, BNS shall issue the applicable Letter of Credit
and if any other Bank is the designated Issuer, such Bank may, but shall not be
obligated to, issue such Letter of Credit.

         (b)     Additional Provisions.  The following additional provisions
shall apply to each Letter of Credit:

                 (i)      The Company shall give the Administrative Agent and
the Paying Agent at least three (3) Business Days' prior notice (effective upon
receipt) specifying the proposed Issuer and the date such Letter of Credit is
to be issued and describing the proposed terms of such Letter of Credit and the
nature of the transaction proposed to be supported thereby, and shall furnish
such additional information regarding such transaction as the Administrative
Agent, the Paying Agent or the applicable Issuer may reasonably request.  Upon
receipt of such notice the Paying Agent shall promptly notify each Bank of the
contents thereof and of such Bank's Commitment Percentage of the amount of such
proposed Letter of Credit.

                 (ii)     No Letter of Credit may be issued if after giving
effect thereto the sum of (i) the aggregate outstanding principal amount of
Loans plus (ii) the aggregate Letter of Credit Liabilities would exceed the
Maximum Revolving Credit Available Amount.  On each day during the period
commencing with the issuance of any Letter of Credit and until such Letter of
Credit shall have expired or been terminated, the Commitment of each Bank shall
be deemed to be utilized for all purposes hereof in an amount equal to such
Bank's Commitment Percentage of the amount then available for drawings under
such Letter of Credit.

                 (iii) Upon receipt from the beneficiary of any Letter of
Credit of any demand for payment thereunder, the applicable Issuer shall
promptly notify the Company and each Bank as to the amount to be paid as a
result of such demand and the payment date.  If at any time the applicable
Issuer shall have made a payment to a beneficiary of a Letter of Credit in
respect of





                                       26
<PAGE>   33
a drawing under such Letter of Credit, each Bank will pay to the applicable
Issuer immediately upon demand by the applicable Issuer at any time during the
period commencing after such payment until reimbursement thereof in full by the
Company, an amount equal to such Bank's Commitment Percentage of such payment,
together with interest on such amount for each day from the date of demand for
such payment (or, if such demand is made after 11:00 a.m. Toronto, Ontario time
on such date, from the next succeeding Business Day) to the date of payment by
such Bank of such amount at a per annum rate of interest determined by the
Issuer (such rate to be conclusive and binding on the Banks) in accordance with
the Issuer's usual banking practice for similar advances to financial
institutions of like standing to the applicable Bank.

                 (iv)     The Company shall be irrevocably and unconditionally
obligated forthwith to reimburse the applicable Issuer for any amount paid by
the applicable Issuer upon any drawing under any Letter of Credit, without
presentment, demand, protest or other formalities of any kind.  Such
reimbursement may, subject to satisfaction of the conditions in Sections 7.1
and 7.2 hereof and to the existence of the  Maximum Revolving Credit Available
Amount (after adjustment in the same to reflect the elimination of the
corresponding Letter of Credit Liability) be made by borrowing of Loans.  In
the event any such reimbursement is not made by borrowing of Loans, the Company
shall make such reimbursement in immediately available funds within five (5)
days after demand therefor by the applicable Issuer.  The applicable Issuer
will pay to each Bank such Bank's Commitment Percentage of all amounts received
from the Company for application in payment, in whole or in part, of the
Reimbursement Obligation in respect of any Letter of Credit, but only to the
extent such Bank has made payment to the applicable Issuer in respect of such
Letter of Credit pursuant to clause (iii) above.

                 (v)      The Company will pay to the Paying Agent at the
Payment Office for the account of each Bank a fee on such Bank's Commitment
Percentage of the daily average amount available for drawings under each Letter
of Credit, in each case for the period from and including the date of issuance
of such Letter of Credit to and including the date of expiration or termination
thereof at a rate per annum equal to the Letter of Credit Fee in effect from
time to time, such fee to be paid in arrears on the Quarterly Dates and on the
date of the expiration or termination thereof.  The Paying Agent will pay to
each Bank, promptly after receiving any payment in respect of letter of credit
fees referred to in the preceding sentence of this clause (v), an amount equal
to such Bank's Commitment Percentage of such fees.  The Company shall pay to
the applicable Issuer an administration and issuance fee in an amount equal to
1/8 of 1% per annum of the daily average amount available for drawings under
such Letter of Credit, in each case for the period from and including the date
of issuance of such Letter of Credit to and including the date of expiration or
termination thereof, such fee to be paid in arrears on the Quarterly Dates and
on the date of the expiration or termination thereof.  Such administration and
issuance fee shall be retained by the applicable Issuer.

                 (vi)     The issuance by the applicable Issuer of each Letter
of Credit shall, in addition to the conditions precedent set forth in Section 7
hereof, be subject to the conditions





                                       27
<PAGE>   34
precedent that such Letter of Credit shall be in such form and contain such
terms as shall be reasonably satisfactory to the applicable Issuer and that the
Company shall have executed and delivered such other instruments and agreements
relating to such Letter of Credit as the applicable Issuer shall have
reasonably requested and are not inconsistent with the terms of this Agreement
including an Application therefor.  In the event of a conflict between the
terms of this Agreement and the terms of any Application, the terms of this
Agreement shall control.  Without limiting the generality of the foregoing
sentence, in the event any such Application shall include requirements for
Cover, it is agreed that there shall be no requirements for the Company to
provide Cover except as expressly required in this Agreement.

         (c)     Indemnification.  The Company hereby indemnifies and holds
harmless each Agent, the applicable Issuer and each Bank from and against any
and all claims and damages, losses, liabilities, costs or expenses which such
Bank, the applicable Issuer or such Agent may incur (or which may be claimed
against such Bank, the applicable Issuer or such Agent by any Person
whatsoever) in connection with the execution and delivery or transfer of or
payment or failure to pay under any Letter of Credit, including, without
limitation, any claims, damages, losses, liabilities, costs or expenses which
such Agent, the applicable Issuer or such Bank, as the case may be, may incur
(whether incurred as a result of its own negligence or otherwise) by reason of
or in connection with the failure of any other Bank (whether as a result of its
own negligence or otherwise) to fulfill or comply with its obligations to such
Agent, the applicable Issuer or such Bank, as the case may be, hereunder (but
nothing herein contained shall affect any rights the Company may have against
such defaulting Bank); provided that, the Company shall not be required to
indemnify any Bank, the applicable Issuer or any Agent for any claims, damages,
losses, liabilities, costs or expenses to the extent, but only to the extent,
caused by (i) the willful misconduct or gross negligence of the party seeking
indemnification, or (ii) by such Bank's, the applicable Issuer's or such
Agent's, as the case may be, failure to pay under any Letter of Credit after
the presentation to it of a request required to be paid under applicable law.
Nothing in this Section 2.2(c) is intended to limit the obligations of the
Company under any other provision of this Agreement.

         (d)     Co-issuance or Separate Issuance of Letters of Credit.  The
Company may, at its option, request that any requested Letter of Credit which
exceeds U.S. $1,000,000 be issued severally, but not jointly, by any two or
more of the Banks or issued through separate Letters of Credit issued by any
two or more of the Banks, respectively, each in an amount equal to a portion of
the amount of the applicable Letter of Credit requested by the Company.  In
either such event, the Banks issuing such Letters of Credit shall each
constitute an "Issuer" and the Letters of Credit so issued shall each
constitute a "Letter of Credit" for all purposes hereunder and under the Loan
Documents.  Notwithstanding the foregoing, no Bank other than BNS shall have
any obligation to issue any Letter of Credit, but may do so at its option.





                                       28
<PAGE>   35
         2.3     Reductions and Changes of Commitments.

         (a)     Mandatory.

         (i)     The total Commitment of the Banks shall be reduced as follows:

<TABLE>
<CAPTION>
                                      Reduction            Resulting Revolving
         Reduction Date                Amount               Credit Commitment
         --------------           ---------------           -----------------
         <S>                      <C>                          <C>
         March 31, 1996           U.S. $10,937,500             U.S. $164,062,500
         June 30, 1996            U.S. $10,937,500             U.S. $153,125,000
         September 30, 1996       U.S. $10,937,500             U.S. $142,187,500
         December 31, 1996        U.S. $10,937,500             U.S. $131,250,000
         March 31, 1997           U.S. $10,937,500             U.S. $120,312,500
         June 30, 1997            U.S. $10,937,500             U.S. $109,375,000
         September 30, 1997       U.S. $10,937,500             U.S. $ 98,437,500
         December 31, 1997        U.S. $10,937,500             U.S. $ 87,500,000
         March 31, 1998           U.S. $10,937,500             U.S. $ 76,562,500
         June 30, 1998            U.S. $10,937,500             U.S. $ 65,625,000
         September 30, 1998       U.S. $10,937,500             U.S. $ 54,687,500
         December 31, 1998        U.S. $10,937,500             U.S. $ 43,750,000
         March 31, 1999           U.S. $10,937,500             U.S. $ 32,812,500
         June 30, 1999            U.S. $10,937,500             U.S. $ 21,875,000
         September 30, 1999       U.S. $10,937,000             U.S. $ 10,937,500
         December 31, 1999        U.S. $10,937,000             U.S. $ 0
</TABLE>

         (ii)    On December 31, 1999, all Commitments shall be terminated in
                 their entirety unless terminated at an earlier date pursuant
                 to Section 11.1.

         (b)     Optional.  The Company shall have the right to terminate or
reduce the unused portion of the Commitments at any time or from time to time,
provided that:  (i) the Company shall give notice of each such termination or
reduction to the Administrative Agent and the Paying Agent as provided in
Section 5.5 hereof and (ii) each such partial reduction shall be permanent and
in an aggregate amount at least equal to U.S. $5,000,000.

         (c)     No Reinstatement.  Any reduction in or termination of the
Commitments may not be reinstated without the approval of the Administrative
Agent and each of the Banks.

         2.4     Fees.

         (a)  The Company shall pay to the Paying Agent for the account of each
Bank a commitment fee with respect to such Bank's Commitment accruing from the
date hereof, computed for each day at a rate per annum equal to the Revolving
Credit Commitment Fee





                                       29
<PAGE>   36
Percentage with respect to the Commitments of the respective Banks and based on
the amount, if any, by which such Bank's pro rata share of the lesser of the
aggregate Commitments or the Maximum Outstanding Amount on such day exceeds the
sum of (i) the unpaid principal balance of such Bank's Note outstanding on such
day plus (ii) the full face amount of all outstanding Bankers' Acceptances
accepted by such Bank plus (iii) such Bank's allocated share of the aggregate
Letter of Credit Liabilities outstanding on such day.  Commitment fees accruing
pursuant to this clause (a) shall be payable on the Quarterly Dates and on the
earlier of the date the Commitments are terminated or the last day of the
Revolving Credit Availability Period.  Such fees shall be calculated in U.S.
Dollars, but paid in Canadian Dollars converted by using the Equivalent U.S.
Dollar Amount as of the date of payment.

         (b)  The Company shall pay to the Paying Agent for the account of each
Bank an additional commitment fee with respect to such Bank's Commitment
accruing from the date hereof, computed for each day at a rate per annum equal
to one-half (1/2) of the Revolving Credit Commitment Fee Percentage with
respect to the Commitments of the respective Banks and based on the amount, if
any, by which the amount set forth opposite such Bank's name on the signature
pages hereto under the heading "Commitment" (but only to the extent that such
amount has not been permanently and irrevocably terminated and reduced by
written notice from the Company to the Administrative Agent, with a copy to the
Paying Agent; provided, however that any such termination or reduction must be
allocated among the Banks pro rata in accordance with their respective
Commitment Percentages) exceeds such Bank's pro rata share of the Maximum
Outstanding Amount on such day.  Commitment fees accruing pursuant to this
clause (b) shall be payable on the Quarterly Dates and on the earlier of the
date the Commitments are terminated or the last day of the Revolving Credit
Availability Period.  Such fees shall be calculated in U.S. Dollars, but paid
in Canadian Dollars converted by using the Equivalent U.S. Dollar Amount as of
the date of payment.

         (c)     The Company shall pay to the Paying Agent for the account of
each Bank an additional commitment fee effective upon any increase in borrowing
availability hereunder.  Such additional commitment fee shall be in an amount
equal to the amount by which the commitment fee which such Bank would have
received under Sections 2.4(a) and (b) if such increased borrowing availability
had been effective six (6) calendar months earlier exceeds the commitment fee
actually received by such Bank under Sections 2.4(a) and (b) during such six
(6) calendar month period.  Payment of such additional commitment fee shall be
due and payable upon the effective date of such increase in the Maximum
Outstanding Amount.  The commitment fee provided for in this Section 2.4(c)
shall be payable notwithstanding any prior decrease in the available
Commitments which may have occurred.  Such fees shall be calculated in U.S.
Dollars, but paid in Canadian Dollars converted by using the Equivalent U.S.
Dollar Amount as of the date of payment.





                                       30
<PAGE>   37
         (d)     For purposes of determining the amount of any payment required
to be made under this Section 2.4, the Quarterly Equivalent shall be used as
the conversion rate with respect to Canadian Dollars.

         2.5     Affiliates; Lending Offices.

         (a)     Any Bank may, if it so elects, fulfill its Commitment as to
any Eurodollar Loan by causing a branch, foreign or otherwise, or Affiliate of
such Bank to make such Loan and may transfer and carry such Loan at, to or for
the account of any branch office or Affiliate of such Bank which is a resident
of Canada under the Income Tax Act (Canada); provided that, in such event for
the purposes of this Agreement such Loan shall be deemed to have been made by
such Bank and the obligation of the Company to repay such Loan shall
nevertheless be to such Bank and shall be deemed to be held by such Bank and,
to the extent of such Loan, to have been made for the account of such branch or
Affiliate.

         (b)     Notwithstanding any provision of this Agreement to the
contrary, each Bank shall be entitled to fund and maintain its funding of all
or any part of its Loans hereunder in any manner it sees fit, it being
understood, however, that for the purposes of this Agreement all determinations
hereunder shall be made as if such Bank had actually funded and maintained each
Eurodollar Loan during each Interest Period through the purchase of deposits
having a maturity corresponding to such Interest Period and bearing an interest
rate equal to the Eurodollar Rate, as the case may be, for such Interest Period
for such Interest Period.

         2.6     Several Obligations.  The failure of any Bank to make any Loan
to be made by it or accept and purchase Bankers' Acceptances to be purchased by
it on the date specified therefor shall not relieve any other Bank of its
obligation to make its Loan or accept and purchase such Bankers' Acceptances on
such date, but neither any Agent nor any Bank shall be responsible for the
failure of any other Bank to make a Loan to be made by such other Bank or to
accept and purchase any Bankers' Acceptances to be accepted and purchased by
such other Bank.

         2.7     Notes.  The Loans made by each Bank shall be evidenced by a
single Canadian Dollar denominated Note of the Company in the case of Loans
denominated in Canadian Dollars and by a single U.S. Dollar denominated Note of
the Company in the case of Loans denominated in U.S. Dollars, such notes to be
in substantially the forms of Exhibit C-1 and C-2, respectively, hereto payable
to the order of such Bank in a principal amount equal to the Commitment of such
Bank, and otherwise duly completed.  Each Bank is hereby authorized by the
Company to endorse on the schedule (or a continuation thereof) attached to the
Note of such Bank, to the extent applicable, the date, amount and Type of and
the Interest Period for each Loan made by such Bank to the Company hereunder,
and the amount of each payment or prepayment of principal of such Loan received
by such Bank, provided, that any failure by such Bank to make any such
endorsement shall not affect the obligations of the Company under such Note or
hereunder in respect of such Loan.





                                       31
<PAGE>   38
         2.8     Use of Proceeds.  The proceeds of the Loans and the Canadian
Bankers' Acceptance Discount Proceeds, as the case may be, shall be used to
finance a portion of the costs of acquiring the equity and other capital of
Novalta (consisting of common and preferred stock and a note payable from
Novalta to Novacor Petrochemicals Ltd.) and for general corporate purposes.

         2.9     Designation of Maximum Outstanding Amount.  The Company shall
from time to time designate a maximum principal amount, denominated in U.S.
Dollars, permitted to be outstanding hereunder for the period during which such
designation is effective (such amount being herein called the "Maximum
Outstanding Amount").  The initial Maximum Outstanding Amount, effective from
the date hereof, is U.S. $160,000,000.  The Company may, at any time, by
written notice delivered to the Administrative Agent and the Paying Agent no
later than two (2) Business Days prior to the effective date thereof, revise
the Maximum Outstanding Amount upwards or downwards; provided, however, that
(i) the Maximum Outstanding Amount may not at any time exceed the aggregate
amount of the Commitments, as reduced from time to time pursuant to Section 2.3
hereof and (ii) the Maximum Outstanding Amount may not at any time exceed the
amount by which the Borrowing Base from time to time in effect exceeds the sum
of the aggregate amount of all "Revolving Credit Obligations" from time to time
outstanding under the U.S. Facility plus the aggregate amount of all other
Borrowing Base Debt of the Parent and its Subsidiaries from time to time
outstanding.

         SECTION 3.       BORROWINGS, PREPAYMENTS AND SELECTION OF INTEREST
                          RATES.

         3.1     Borrowings.  The Company shall give the Administrative Agent
and the Paying Agent notice of each borrowing or the issuance of each Bankers'
Acceptance to be made hereunder as provided in Section 5.5 hereof.  Not later
than 2:00 p.m. Toronto, Ontario time on the date specified for each such
borrowing or the issuance of each such Bankers' Acceptance hereunder, each Bank
shall make available the amount of the Loan, if any, to be made by it on such
date or make available Canadian Bankers' Acceptance Discount Proceeds in
respect of Bankers' Acceptances to be accepted and purchased by it on such date
(less the applicable acceptance fees payable by the Company in respect of such
Bankers' Acceptances), in each case to the Paying Agent, at the Payment Office,
in immediately available funds, for the account of the Company.  The amount so
received by the Paying Agent shall, subject to the terms and conditions of this
Agreement, be made available to the Company by depositing the same, in
immediately available funds, in an account designated by the Company maintained
with the Paying Agent at the Payment Office.

         3.2     Prepayments.

         (a)     Optional Prepayments.  Subject to the provisions of Sections
4, 5 and 6, the Company shall have the right to prepay, on any Business Day, in
whole or in part, without the payment of any penalty or fee, Loans at any time
or from time to time, provided that, the Company shall give the Administrative
Agent and the Paying Agent notice of each such





                                       32
<PAGE>   39
prepayment as provided in Section 5.5 hereof.  Eurodollar Loans may be prepaid
on the last day of an Interest Period applicable thereto and Bankers'
Acceptances may be prepaid on their stated maturity date.  Eurodollar Loans and
Bankers' Acceptances may not be otherwise prepaid unless prepayment is
accompanied by payment of all compensation required by Section 6.

         (b)     Mandatory Prepayments and Cover.

         (1)     Reduction of Commitments.  The Company shall from time to time
on demand by the Administrative Agent prepay the Loans (or provide Cover for
Letter of Credit Liabilities and the face amount of Bankers' Acceptances) in
such amounts as shall be necessary so that at all times the aggregate
outstanding principal amount (including therein the face amount of all
outstanding Bankers' Acceptances) of all Revolving Credit Obligations shall not
be in excess of the Maximum Outstanding Amount plus any Cover provided under
this Section 3.2(b)(1).

         (2)     Borrowing Base Deficiency.  Any payments required to cure any
Borrowing Base Deficiency shall be made by Parent to the lenders under the U.S.
Facility and by the Company to the Banks (with the Maximum Outstanding Amount
to be reduced by the amount of such payments by the Company) in the manner
provided in the Intercreditor Agreement.

         (3)     Use of Quarterly Equivalent.  For purposes of determining
whether any payment is required to be made under this Section 3.2, and the
amount thereof, when such determination requires a conversion of U.S. Dollars
into Canadian Dollars and vice versa, the Quarterly Equivalent shall be used as
the conversion rate.

         3.3     Selection of Interest Rates.  Subject to Section 5.1 and
Section 6 hereof, the Company shall have the right, by giving written notice to
the Administrative Agent and the Paying Agent as provided in Section 5.5
hereof, either to convert any Bankers' Acceptance (in whole or in part) into a
Loan, to convert any Loan (in whole or in part) into a Bankers' Acceptance, to
convert any Loan (in whole or in part) into a Loan of another Type (provided
that no such conversion of Eurodollar Loans shall be permitted other than on
the last day of an Interest Period applicable thereto and no conversion of
Bankers' Acceptances shall be permitted other than on the maturity date
thereof), to continue any Bankers' Acceptance (in whole or in part) or to
continue any Loan (in whole or in part) as a Loan of the same Type.  Any such
notice of conversion of a Bankers' Acceptance into a Loan or of conversion of a
Loan into, or continuation of a Loan as, a Eurodollar Loan or a Bankers'
Acceptance shall specify the new Interest Period or maturity date, as
applicable.  In the event the Company fails to so give such notice prior to the
end of any Interest Period for any Eurodollar Loan, such Loan shall become an
Alternate Base Rate Loan on the last day of such Interest Period.

         3.4     Conditions Applicable to Bankers' Acceptances.

         (a)     Acceptance and Purchase of Bankers' Acceptances.  Subject to
the terms and conditions of this Agreement, each Bank agrees to accept its
Commitment Percentage of





                                       33
<PAGE>   40
Bankers' Acceptances issued by the Company and to purchase same at the
applicable Canadian Bankers' Acceptance Discount Rate and to provide to the
Paying Agent for the account of the Company the Canadian Bankers' Acceptance
Discount Proceeds in respect thereof less the applicable acceptance fees
payable by the Company to such Bank pursuant to Section 4.3.  Each such Bank
may at any time and from time to time hold, sell, rediscount or otherwise
dispose of any or all Bankers' Acceptances purchased by it.

         (b)     Waiver of Presentment and Other Conditions.  The Company
waives presentment for payment and any other defence to payment of any amounts
due to a Bank in respect of a Bankers' Acceptance accepted and purchased by it
pursuant to this Agreement which might exist solely by reason of such Bankers'
Acceptance being held, at the maturity thereof, by such Bank in its own right
and the Company agrees not to claim any days of grace if such Bank as holder
sues the Company on the Bankers' Acceptance for payment of the amount payable
by the Company thereunder.  On the specified maturity date of a Bankers'
Acceptance, or such earlier date as may be required or permitted pursuant to
the provisions of this Agreement, the Company shall pay the Bank that has
accepted and purchased such Bankers' Acceptance the full face amount of such
Bankers' Acceptance.

         (c)     Terms of Each Bankers' Acceptance:  Each Bankers' Acceptance
shall:

                 (1)      have a maturity date which shall be on a Business Day;

                 (2)      have a term of not less than thirty (30) days and not
                          more than one hundred and eighty (180) days
                          (excluding days of grace);

                 (3)      be in the form of Exhibit K attached hereto or in
                          such other form as the Company may agree to in 
                          writing;

                 (4)      be issued in face amounts of Canadian $100,000 or
                          whole multiples thereof (each of the Banks agrees
                          that it will use its best efforts to minimize the
                          number of separate Bankers' Acceptances required to
                          be executed); and

                 (5)      not have a maturity date which extends beyond the end
                          of the scheduled Revolving Credit Availability
                          Period.

         (d)     Delivery of Blank Bankers' Acceptances.  As a condition
precedent to each Banks' obligation to accept and purchase Bankers' Acceptances
hereunder, the Company shall have delivered to such Bank through the Paying
Agent at the Payment Office sufficient bankers' acceptances endorsed in blank
in sufficient time for such Bank to forward to and hold the same for issuance
in accordance with a request from the Company.  Each Bank is hereby authorized
to issue such bankers' acceptances endorsed in blank in such face amounts as
may be determined by such Bank; provided that the aggregate amount thereof is
equal to the aggregate amount of





                                       34
<PAGE>   41
Bankers' Acceptances required to be accepted and purchased by such Bank
hereunder.  No Bank shall be liable for any damage, loss or other claim arising
by reason of any loss or improper use of any bankers' acceptance endorsed in
blank except any loss arising by reason of the negligence or wilful misconduct
of such Bank or its officers, employees, agents or representatives.  The Paying
Agent shall maintain a record with respect to bankers' acceptances endorsed in
blank that are received from the Company and that are delivered to a Bank
hereunder.  Each Bank shall maintain a record with respect to bankers'
acceptances endorsed in blank that are:

                 (1)      received by such Bank from the Paying Agent hereunder;

                 (2)      voided by such Bank for any reason;

                 (3)      accepted and purchased by such Bank hereunder; and

                 (4)      cancelled by such Bank at the maturity thereof.

Each Bank agrees to provide such record to the Paying Agent upon request
therefor by the Paying Agent as well as concurrently with any request by such
Bank to the Paying Agent for any additional bankers' acceptances endorsed in
blank required from the Company.  The Paying Agent shall provide a report of
such records received by the Paying Agent to the Company upon request from the
Company.

         (e)     Failure to Give Notice of Repayment.  If the Company fails to
give notice to the Paying Agent at the Payment Office of the method of
repayment of a Bankers' Acceptance prior to the date of maturity of such
Bankers' Acceptance in accordance with the same period of notice required for
the original acceptance of such Bankers' Acceptance as set forth herein, the
face amount of such Bankers' Acceptance shall, on its maturity, automatically
be converted to a Canadian Prime Rate Loan.

         (f)     Execution of Bankers' Acceptances.  Bankers' acceptances of
the Company which are endorsed in blank and are to be accepted as Bankers'
Acceptances hereunder shall be signed by a duly authorized signatory or duly
authorized signatories of the Company, and may, at the option of the Company,
be signed by way of affixing a reproduction of the signature or signatures of
such duly authorized signatory or signatories.  Notwithstanding that any person
whose signature appears on any Bankers' Acceptance as a signatory may no longer
be an authorized signatory of the Company at the date of issuance of a Bankers'
Acceptance, and notwithstanding that the signature affixed may be a
reproduction only, such signature shall nevertheless be valid and sufficient
for all purposes as if such authority had remained in force at the time of such
issuance and as if such signature had been manually applied, and any such
Bankers' Acceptance so signed shall be binding on the Company.





                                       35
<PAGE>   42
         3.5     Paying Agent's Duties Re Bankers' Acceptances.

         (a)     Advice to the Lenders.  The Paying Agent, promptly following
receipt of a Request for Extension of Credit by way of Bankers' Acceptance,
shall so advise the Banks and shall advise each Bank of the amount of each
issue of Bankers' Acceptances to be accepted and purchased by it and the term
thereof, which term shall be identical for all Banks.

         (b)     Agent's Confirmation of Bankers' Acceptance Issuance.  At or
prior to 11:00 a.m. (Toronto, Ontario time) on the date on which the Bankers'
Acceptances are to be accepted and purchased hereunder, the Paying Agent shall
provide telephone advice to the Company and each Bank confirming the
particulars with respect to the issuance, acceptance and purchase of such
Bankers' Acceptances.  Such advice shall be confirmed in writing at or prior to
4:30 p.m. (Toronto, Ontario time) on such date by delivery to the Company and
each Bank of a written confirmation of such telephone advice with respect to
the issuance, acceptance and purchase of such Bankers' Acceptances.  Each Bank
will forthwith advise the Paying Agent of the particulars of the Bankers'
Acceptances accepted and purchased by it.

         (c)     Completion of Bankers' Acceptance.  Upon receipt of the
telephone advice referred to in Section 3.5(a), each Bank is thereupon
authorized to complete bankers' acceptances held by it in blank in accordance
with the particulars so advised by the Paying Agent.

         (d)     Paying Agent's Discretion on Allocation.  In the event it is
not practicable to allocate Bankers' Acceptances to each Lender in accordance
with Section 5.2 such that the aggregate amount of Bankers' Acceptances
required to be accepted and purchased by such Bank hereunder is in a whole
multiple of Canadian $100,000, the Paying Agent is authorized by the Company
and each Bank to make such allocation as the Paying Agent determines in its
sole and unfettered discretion may be equitable in the circumstances.





                                       36
<PAGE>   43
         3.6     Certain Provisions Relating to Bankers' Acceptances Forms.

         (a)     The Company shall hold and use prudently the bankers'
acceptance forms delivered to it in blank from time to time and shall return
them from time to time to the Paying Agent for onward conveyance to the
respective Banks, properly pre-signed and pre-endorsed and in sufficient
quantities to be dealt with by each Bank in conformity with this Agreement.
The Paying Agent shall provide to the Company written acknowledgment of the
receipt of such pre-signed and pre-endorsed bankers' acceptance forms.

         (b)     The Paying Agent and each Bank shall deal prudently with any
bankers' acceptance forms pre-signed and pre-endorsed by the Company and
delivered from time to time by the Company and shall use them only in
accordance with the instructions of the Company given to the Paying Agent, in
conformity with this Agreement.

         (c)     In accordance with the instructions given from time to time by
the Company, each Bank is hereby authorized to complete the aforementioned
bankers' acceptance forms, to provide its acceptance thereon and, at such
Bank's option, to put them into circulation, the whole as provided in and
subject to this Agreement.

         (d)     Neither the Paying Agent nor any Bank shall be responsible or
liable for any failure to make credit available by way of Bankers' Acceptances
under the terms of the Credit Agreement if such failure is due to the failure
of the Company to return duly pre-signed and pre-endorsed bankers' acceptance
forms to the Paying Agent on a timely basis.

         (e)     On request by the Paying Agent on behalf of the Banks, the
Company shall return to the Paying Agent all bankers' acceptance forms then
held by the Company, provided that all such bankers' acceptance forms which
have been pre-signed or pre-endorsed by the Company may be cancelled prior to
their return and on request by the Company made to the Paying Agent, a Bank
shall cancel all pre-signed or pre-endorsed bankers' acceptance forms held by
such Bank and not yet issued in accordance with the Company's instructions and
shall confirm such cancellation to the Paying Agent who shall in turn inform
the Company.

         SECTION 4.       PAYMENTS OF PRINCIPAL AND INTEREST.

         4.1     Repayment of Loans and Reimbursement Obligations.  The Company
will pay to the Paying Agent for the account of each Bank (a) the principal of
each Loan made by such Bank on the dates provided in the respective Notes and
as provided hereunder, (b) the face amount of each Bankers' Acceptance on its
maturity date and (c) the amount of each Reimbursement Obligation promptly upon
its occurrence.  The face amount of any Bankers' Acceptance or the amount of
any Reimbursement Obligation may, if the applicable conditions precedent
specified in Section 7 hereof have been satisfied, be paid with the proceeds of
Loans.  Repayments of Loans or Reimbursement Obligations denominated in
Canadian Dollars and





                                       37
<PAGE>   44
repayments of Bankers' Acceptances shall be made in Canadian Dollars and
repayments of Loans or Reimbursement Obligations denominated in U.S. Dollars
shall be made in U.S. Dollars.

         4.2     Interest.        (a) Subject to Section 13.6 hereof, the
Company will pay to the Paying Agent for the account of each Bank interest on
the unpaid principal amount of each Loan made by such Bank for the period
commencing on the date of such Loan to but excluding the date such Loan shall
be paid in full, in the currency in which the Loan is denominated, at the
lesser of (I) the following rates per annum:

                 (i)      if such Loan is an Alternate Base Rate Loan, the
Alternate Base Rate plus the Applicable Margin, and

                 (ii)     if such Loan is a Canadian Prime Rate Loan, the
Canadian Prime Rate plus the Applicable Margin, and

                 (iii)    if such Loan is a Eurodollar Loan, the applicable
Eurodollar Rate plus the Applicable Margin,

or (II) the Highest Lawful Rate.

         (b)     Notwithstanding any of the foregoing but subject to Section
13.6 hereof, the Company will pay to the Paying Agent for the account of each
Bank interest in the applicable currency at the applicable Post-Default Rate on
any principal of any Loan made by such Bank, on any Reimbursement Obligation
and on any other amount payable by the Company hereunder to or for the account
of such Bank (but, if such amount is interest, only to the extent legally
allowed), which shall not be paid in full when due (whether at stated maturity,
by acceleration or otherwise), for the period commencing on the due date
thereof until the same is paid in full.

         (c)     Accrued interest on each Loan shall be payable on the last day
of each Interest Period for such Loan (and, if such Interest Period exceeds
three months' duration, quarterly, commencing on the first quarterly
anniversary of the first day of such Interest Period), except that (i) accrued
interest payable at the Post-Default Rate shall be due and payable from time to
time on demand of the Administrative Agent or the Majority Banks (through the
Administrative Agent) and (ii) accrued interest on any amount prepaid or
converted pursuant to Section 6 hereof shall be paid on the amount so prepaid
or converted.

         4.3     Acceptance Fees.  The Company shall pay to each Bank
acceptance fees in Canadian Dollars forthwith upon the acceptance by such Bank
of each Bankers' Acceptance issued by the Company at a rate per annum equal to
the B/A Stamping Rate in effect at the time of the acceptance of such Bankers'
Acceptance, calculated on the face amount of such Bankers' Acceptance and on
the basis of the number of days in the term of such Bankers' Acceptance divided
by three hundred sixty-five (365).  Acceptance fees payable to the Banks
pursuant to this Section 4.3 shall be paid in the manner specified in Section
3.4(a).





                                       38
<PAGE>   45
         SECTION 5.       PAYMENTS; PRO RATA TREATMENT; COMPUTATIONS, ETC.

         5.1     Payments.

         (a)  Except to the extent otherwise provided herein, all payments of
principal, interest, the full face amount of Bankers' Acceptances,
Reimbursement Obligations and other amounts to be made by the Company hereunder
and under the Notes and the other Loan Documents shall be made in U.S. Dollars
or Canadian Dollars, as the case may be, in immediately available funds, to the
Paying Agent at the Payment Office (or in the case of a successor Paying Agent,
at the payment office designated by such successor Paying Agent in Canada), not
later than 11:00 a.m. Toronto, Ontario time on the date on which such payment
shall become due (each such payment made after such time on such due date to be
deemed to have been made on the next succeeding Business Day).  The Paying
Agent, or any Bank for whose account any such payment is made, may (but shall
not be obligated to) debit the amount of any such payment which is not made by
such time to any ordinary deposit account of the Company with the Paying Agent
or such Bank, as the case may be.

         (b)     The Company shall, at the time of making each payment
hereunder or under any Note or any other Loan Document, specify to the Paying
Agent the Loans, the Bankers' Acceptances or other amounts payable by the
Company hereunder or thereunder to which such payment is to be applied.  Each
payment received by the Paying Agent hereunder or under any Note, Bankers'
Acceptance or any other Loan Document for the account of a Bank shall be paid
promptly to such Bank, in immediately available funds for the account of such
Bank's Applicable Lending Office.

         (c)     If the due date of any payment hereunder or under any Note or
any other Loan Document falls on a day which is not a Business Day, the due
date for such payment (subject to the definition of Interest Period) shall be
extended to the next succeeding Business Day and interest shall be payable for
any principal so extended for the period of such extension.

         5.2     Pro Rata Treatment.  Except to the extent otherwise provided
herein:  (a) each borrowing from the Banks under Section 2.1 hereof shall be
made ratably from the Banks on the basis of their respective Commitments and
each payment of commitment fees shall be made for the account of the Banks, and
each termination or reduction of the Commitments of the Banks under Section 2.3
hereof shall be applied, pro rata, according to the Banks' respective
Commitments;  (b) each payment by the Company of the full face amount of
Bankers' Acceptances and principal of or interest on Loans of a particular Type
shall be made to the Paying Agent for the account of the Banks pro rata in
accordance with the respective full face amount of such Bankers' Acceptances or
the unpaid principal amounts of such Loans held by the Banks; and (c) the Banks
(other than the applicable Issuer) shall purchase from the applicable Issuer
participations in the Letters of Credit to the extent of their respective
Commitment Percentages.





                                       39
<PAGE>   46
         5.3     Computations.  Subject to Section 13.7, interest based on the
Eurodollar Base Rate or the Federal Funds Rate will be computed on the basis of
a year of 360 days and actual days elapsed (including the first day but
excluding the last day) occurring in the period for which payable, unless the
effect of so computing shall be to cause the rate of interest to exceed the
Highest Lawful Rate, in which case interest shall be calculated on the basis of
the actual number of days elapsed in a year composed of 365 or 366 days, as the
case may be.  All other interest and fees shall be computed on the basis of a
year of 365 (or 366) days and actual days elapsed (including the first day but
excluding the last day) occurring in the period for which payable.

         5.4     Minimum and Maximum Amounts.  Except for prepayments made
pursuant to Section 3.2(b) hereof, each borrowing and repayment of principal of
Loans, each acceptance, purchase and repayment of Bankers' Acceptances and each
termination or reduction of Commitments, each optional prepayment and each
conversion of Type shall be in an aggregate principal amount at least equal to
(a) in the case of Eurodollar Loans, U.S. $5,000,000,(b) in the case of
Bankers' Acceptances, Canadian $5,000,000,  (c) in the case of Canadian Prime
Rate Loans, Canadian $1,000,000, and (d) in the case of Alternate Base Rate
Loans, U.S. $1,000,000 (borrowings or prepayments of Loans of different Types
or, in the case of Eurodollar Loans, having different Interest Periods at the
same time hereunder to be deemed separate borrowings and prepayments for
purposes of the foregoing, one for each Type or Interest Period).  Upon any
mandatory prepayment that would reduce Eurodollar Loans having the same
Interest Period to less than U.S. $5,000,000 such Loans shall automatically be
converted into Alternate Base Rate Loans.  Notwithstanding anything to the
contrary contained in this Agreement, there shall not be, at any one time, more
than eight (8) Interest Periods in effect with respect to Eurodollar Loans.

         5.5     Certain Actions, Notices, Etc.  Notices to the Administrative
Agent and the Paying Agent of any termination or reduction of Commitments, of
borrowings and prepayments, of issuance, acceptance and purchase of Bankers'
Acceptances, of conversions and continuations of Loans and Bankers'
Acceptances, of the term of Bankers' Acceptances and of the duration of
Interest Periods shall be irrevocable and shall be effective only if received
by the Administrative Agent and the Paying Agent not later than 11:00 a.m.
Toronto, Ontario time on the number of Business Days prior to the date of the
relevant termination, reduction, borrowing and/or repayment, conversion or
continuance specified below:





                                       40
<PAGE>   47
<TABLE>
<CAPTION>
                                                            Number of
                                                             Business
         Notice                                             Days Prior
         ------                                             ----------
         <S>                                            <C>
         Termination or
         Reduction of Commitments                                 2

         Borrowing or prepayment
         of or conversion into or
         continuance of
         Alternate Base Rate                             11:00 a.m. (Toronto,
         Loans or Canadian                                 Ontario time) of
         Prime Rate Loans                                    the same day
         which are equal to or less
         than (in the aggregate with
         respect to all Loans
         requested on a given day)
         U.S. $20,000,000

         Borrowing or prepayment
         of or conversion into or
         continuance of
         Alternate Base Rate                                       1
         Loans or Canadian
         Prime Rate Loans
         which exceed
         (in the aggregate with
         respect to all Loans
         requested on a given day)
         U.S. $20,000,000


         Issuance of Bankers' Acceptances                          2


         Borrowing or
         prepayment of or conversion
         into or continuance of                                    3
         Eurodollar Loans
</TABLE>





                                       41
<PAGE>   48
Each such notice of termination or reduction shall specify the amount of the
Commitments to be terminated or reduced.  Each such notice of borrowing or
prepayment shall specify the amount of Bankers' Acceptances to be accepted and
purchased or prepaid and the Type of the Loans to be borrowed or prepaid
(subject to Sections 3.2(a) and 5.4 hereof), the date of borrowing, acceptance
and purchase or prepayment (which shall be a Business Day) and, in the case of
Eurodollar Loans, the duration of the Interest Period therefor (subject to the
definition of "Interest Period") and, in the case of Bankers' Acceptances, the
term and maturity date therefor (subject to Section 3.4(c)).  Each such notice
of conversion of a Bankers' Acceptance into a Loan or conversion of a Loan into
a Loan of another Type or a Bankers' Acceptance shall identify such Bankers'
Acceptance or Loan (or portion thereof) being converted and specify the Type of
Loan into which such Bankers' Acceptance or Loan is being converted (subject to
Section 5.4 hereof) and the date for conversion (which shall be a Business Day)
and, unless such Bankers' Acceptance or Loan is being converted into an
Alternate Base Rate Loan or a Canadian Prime Rate Loan, the duration (subject
to the definition of "Interest Period") of the Interest Period therefor which
is to commence as of the last day of the then current Interest Period therefor
(or the date of conversion, if such Loan is being converted from an Alternate
Base Rate Loan or a Canadian Prime Rate Loan).  In the case of any such notice
for a Bankers' Acceptance, the term and maturity date of such Bankers'
Acceptance shall also be specified.  Each such notice of continuation of a Loan
(or portion thereof) as the same Type of Loan shall identify such Loan (or
portion thereof) being continued (subject to Section 5.4 hereof) and, unless
such Loan is an Alternate Base Rate Loan or a Canadian Prime Rate Loan, the
duration (subject to the definition of "Interest Period") of the Interest
Period therefor which is to commence as of the last day of the then current
Interest Period therefor.  The Paying Agent shall promptly notify the affected
Banks of the contents of each such notice.  Notice of any prepayment having
been given, the principal amount specified in such notice, together with
interest thereon to the date of prepayment, shall be due and payable on such
prepayment date.

         5.6       Non-Receipt of Funds by the Paying Agent.  Unless the
Paying Agent shall have been notified by a Bank or the Company (the "Payor")
prior to the date on which such Bank is to make payment to the Paying Agent of
the Canadian Bankers' Acceptance Discount Proceeds in respect of a Bankers'
Acceptance to be purchased by it or the proceeds of a Loan to be made by it
hereunder (or the payment of any amount by such Bank to reimburse the
applicable Issuer for a drawing under any Letter of Credit) or the Company is
to make a payment to the Paying Agent for the account of one or more of the
Banks, as the case may be (such payment being herein called the "Required
Payment"), which notice shall be effective upon receipt, that the Payor does
not intend to make the Required Payment to the Paying Agent, the Paying Agent
may assume that the Required Payment has been made and may, in reliance upon
such assumption (but shall not be required to), make the amount thereof
available to the intended recipient on such date and, if the Payor has not in
fact made the Required Payment to the Paying Agent on or before such date, the
recipient of such payment (or, if such recipient is the beneficiary of a Letter
of Credit, the Company and, if the Company fails to pay the amount thereof to
the Paying Agent forthwith upon demand, the Banks ratably in proportion to
their respective Commitment Percentages) shall, on demand, pay to the Paying
Agent the amount





                                       42
<PAGE>   49
made available to it together with interest thereon in respect of the period
commencing on the date such amount was so made available by the Paying Agent
until the date the Paying Agent recovers such amount at a per annum rate of
interest determined by the Paying Agent (such rate to be conclusive and binding
on the Banks) in accordance with the Paying Agent's usual banking practice for
similar advances to financial institutions of like standing to the applicable
Bank.

         5.7             Sharing of Payments, Etc.  If a Bank shall obtain
payment of the full face amount of an outstanding Bankers' Acceptance accepted
and purchased by it under this Agreement or of any principal of or interest on
any Loan made by it under this Agreement, or on any Reimbursement Obligation or
other obligation then due to such Bank hereunder, through the exercise of any
right of set-off, banker's lien, counterclaim or similar right, or otherwise,
it shall promptly purchase from the other Banks participations in the Loans
made, the outstanding Bankers' Acceptances or Reimbursement Obligations or
other obligations held, by the other Banks in such amounts, and make such other
adjustments from time to time as shall be equitable to the end that all the
Banks shall share the benefit of such payment (net of any expenses which may be
incurred by such Bank in obtaining or preserving such benefit) pro rata in
accordance with the unpaid principal and interest on the Obligations then due
to each of them.  To such end all the Banks shall make appropriate adjustments
among themselves (by the resale of participations sold or otherwise) if such
payment is rescinded or must otherwise be restored.  The Company agrees, to the
fullest extent it may effectively do so under applicable law, that any Bank so
purchasing a participation in the Loans made, the outstanding Bankers'
Acceptances or Reimbursement Obligations or other obligations held, by other
Banks may exercise all rights of set-off, bankers' lien, counterclaim or
similar rights with respect to such participation as fully as if such Bank were
a direct holder of Loans, Bankers' Acceptances and Reimbursement Obligations or
other obligations in the amount of such participation.  Nothing contained
herein shall require any Bank to exercise any such right or shall affect the
right of any Bank to exercise, and retain the benefits of exercising, any such
right with respect to any other Indebtedness or obligation of the Company.

         SECTION 6.      YIELD PROTECTION AND ILLEGALITY.

         6.1             Additional Costs.

         (a)             Subject to Section 13.6, the Company shall pay to the
Paying Agent, on demand for the account of each Bank from time to time such
amounts as such Bank may determine to be necessary to compensate it for any
costs incurred by such Bank which such Bank determines are attributable to its
making or maintaining of any Eurodollar Loan or any Bankers' Acceptance
hereunder or its obligation to make any such Loan hereunder, or any reduction
in any amount receivable by such Bank hereunder in respect of any of such Loans
or such obligation (such increases in costs and reductions in amounts
receivable being herein called "Additional Costs"), in each case resulting from
any Regulatory Change which:





                                       43
<PAGE>   50
                         (i)      subjects such Bank (or makes it apparent that
such Bank is subject) to any tax, levy, impost, duty, charge or fee
(collectively, "Taxes"), or any deduction or withholding for any Taxes on or
from the payment due in respect of any Bankers' Acceptance or under any
Eurodollar Loan or other amounts due hereunder, other than income and franchise
taxes of the jurisdiction (or any subdivision thereof) in which such Bank has
an office or its Applicable Lending Office; or

                         (ii)     changes the basis of taxation of any amounts
payable to such Bank under this Agreement or its Notes in respect of any of
such Loans or in respect of Bankers' Acceptances (other than changes which
affect taxes measured by or imposed on the overall net income or franchise
taxes of such Bank or of its Applicable Lending Office for any of such Loans by
the jurisdiction (or any subdivision thereof) in which such Bank has an office
or such Applicable Lending Office); or

                         (iii)    imposes or modifies or increases or deems
applicable any reserve, special deposit or similar requirements (including,
without limitation, any such requirement imposed by the Office of the
Superintendent of Financial Institutions Canada) relating to any extensions of
credit or other assets of, or any deposits with or other liabilities of, such
Bank or loans made by such Bank, or Bankers' Acceptances accepted by such Bank
or against any other funds, obligations or other property owned or held by such
Bank (including any of such Loans or, where applicable, any deposits referred
to in the definition of "Eurodollar Base Rate" in Section 1.1 hereof or any
Bankers' Acceptances) and such Bank actually incurs such additional costs; or

                         (iv)     imposes any other condition affecting this
Agreement (or any of such extensions of credit or liabilities).

Each Bank  (if so requested by the Company through the Administrative Agent)
will designate a different available Applicable Lending Office for the
Eurodollar Loans or the Bankers' Acceptances of such Bank or take such other
action as the Company may request if such designation or action will avoid the
need for, or reduce the amount of, such compensation and will not, in the sole
opinion of such Bank, be disadvantageous to such Bank (provided that such Bank
shall have no obligation so to designate an Applicable Lending Office for
Eurodollar Loans located in the United States of America or to designate an
Applicable Lending Office for Bankers' Acceptances located in any jurisdiction
that is not located in Canada).  Each Bank will furnish the Company with a
statement setting forth the basis and amount of each request by such Bank for
compensation under this Section 6.1(a); subject to Section 6.8, such
certificate shall be conclusive, absent manifest error, and may be prepared
using any reasonable averaging and attribution methods.

         (b)             Without limiting the effect of the foregoing
provisions of this Section 6.1, in the event that, by reason of any Regulatory
Change, any Bank either (i) incurs Additional Costs based on or measured by the
excess above a specified level of the amount of a category of





                                       44
<PAGE>   51
deposits or other liabilities of such Bank which includes deposits by reference
to which the interest rate on Eurodollar Loans is determined as provided in
this Agreement or a category of extensions of credit or other assets of such
Bank which includes Eurodollar Loans or Bankers' Acceptances or (ii) becomes
subject to restrictions on the amount of such a category of liabilities or
assets which it may hold, then, if such Bank so elects by notice to the Company
(with a copy to the Administrative Agent and the Paying Agent), the obligation
of such Bank to make Eurodollar Loans or accept and purchase Bankers'
Acceptances, as applicable, hereunder shall be suspended until the date such
Regulatory Change ceases to be in effect (in which case the provisions of
Section 6.4 hereof shall be applicable).

         (c)             Good faith determinations and allocations by any Bank
for purposes of this Section 6.1 of the effect of any Regulatory Change on its
costs of maintaining its obligations to make Loans or accept and purchase
Bankers' Acceptances or of making or maintaining Loans or accepting and
purchasing Bankers' Acceptances on amounts receivable by it in respect of Loans
or Bankers' Acceptances, and of the additional amounts required to compensate
such Bank in respect of any Additional Costs, shall be conclusive, absent
manifest error.

         (d)             The Company's obligation to pay Additional Costs and
compensation with regard to each Eurodollar Loan and each Bankers' Acceptance
shall survive termination of this Agreement.

         6.2             Limitations.  Anything herein to the contrary
notwithstanding, if, with respect to any Eurodollar Loans or Bankers'
Acceptance:

         (a)             the Paying Agent determines in good faith (which
determination shall be conclusive) that quotations of interest rates for the
relevant deposits referred to in the definition of "Eurodollar Base Rate" in
Section 1.1 hereof are not being provided by the Reference Banks in the
relevant amounts or for the relevant maturities for purposes of determining the
rate of interest for such Loans for Interest Periods therefor as provided in
this Agreement; or

         (b)             the Paying Agent determines in good faith (which
determination shall be conclusive) that quotations of discount rates for the
purchase of Canadian Dollar bankers' acceptances referred to in the definition
of "Canadian Bankers' Acceptance Discount Rate" in Section 1.1 hereof are not
being provided by the Reference Banks in the relevant amounts or for the
relevant maturities for purposes of determining the Canadian Bankers'
Acceptance Discount Rate therefor as provided in this Agreement; or

         (c)             the Majority Banks determine (which determination
shall be conclusive) and notify the Paying Agent (with a copy to the
Administrative Agent) that the relevant rates of interest referred to in the
definition of "Eurodollar Base Rate" in Section 1.1 hereof upon the basis of
which the rates of interest for such Loans (where applicable) are to be
determined do not accurately reflect the cost to such Banks of making or
maintaining such Loans for Interest Periods therefor; or





                                       45
<PAGE>   52
         (d)             the Paying Agent determines in good faith (which
determination shall be conclusive) that by reason of circumstances affecting
the interbank U.S. Dollar market generally, deposits in United States dollars
in the relevant interbank U.S.  Dollar market are not being offered for the
applicable Interest Period and in an amount equal to the amount of the
Eurodollar Loan requested by the Company;

then the Paying Agent shall promptly notify the Company and each Bank thereof,
and, so long as such condition remains in effect, the Banks shall be under no
obligation to make Eurodollar Loans or accept and purchase Bankers'
Acceptances, as the case may be (but shall maintain until the end of the
Interest Period then in effect the Eurodollar Loans and until the specified
maturity date of the Bankers' Acceptances, as the case may be, then
outstanding).

         6.3             Illegality.  Notwithstanding any other provision of
this Agreement to the contrary, if (x) by reason of the adoption of any
applicable Legal Requirement or any change in any applicable Legal Requirement
or in the interpretation or administration thereof by any Governmental
Authority or compliance by any Bank with any request or directive (whether or
not having the force of law) of any central bank or other Governmental
Authority or (y) with respect to Eurodollar Loans, circumstances affecting the
relevant interbank U.S. Dollar market or the position of a Bank therein or (z)
with respect to Bankers' Acceptances, circumstances affecting the market for
Canadian Dollar bankers' acceptance or the position of a Bank therein shall at
any time make it unlawful or impracticable in the sole discretion of a Bank
exercised in good faith for such Bank or its Applicable Lending Office to (a)
honour its obligation to make Eurodollar Loans or accept and purchase Bankers'
Acceptances, as the case may be, hereunder, or (b) maintain Eurodollar Loans or
Bankers' Acceptances, as the case may be, hereunder, then such Bank shall
promptly notify the Company thereof through the Paying Agent and such Bank's
obligation to make or maintain Eurodollar Loans or accept and purchase Bankers'
Acceptances, as the case may be, hereunder shall be suspended until such time
as such Bank may again make and maintain Eurodollar Loans or accept and
purchase Bankers' Acceptances, as the case may be (in which case the provisions
of Section 6.4 hereof shall be applicable).  Before giving such notice pursuant
to this Section 6.3 with respect to Eurodollar Loans only, such Bank will
designate a different available Applicable Lending Office for the Eurodollar
Loans of such Bank or take such other action as the Company may request if such
designation or action will avoid the need to suspend such Bank's obligation to
make Eurodollar Loans hereunder and will not, in the sole opinion of such Bank
exercised in good faith, be disadvantageous to such Bank (provided, that such
Bank may not designate an Applicable Lending Office that is not located in
Canada).

         6.4             Substitute Alternate Base Rate Loans or Canadian Prime
Rate Loans.  If the obligation of any Bank to make or maintain Eurodollar Loans
shall be suspended pursuant to Section 6.1, 6.2 or 6.3 hereof, all Loans which
would otherwise be made by such Bank as Eurodollar Loans shall be made instead
as Alternate Base Rate Loans (and, if an event referred to in Section 6.1(b) or
6.3 hereof has occurred and such Bank so requests by notice to the Company with
a copy to the Paying Agent, each Eurodollar Loan of such Bank then outstanding





                                       46
<PAGE>   53
shall be automatically converted into an Alternate Base Rate Loan on the date
specified by such Bank in such notice) and, to the extent that Eurodollar Loans
are so made as (or converted into) Alternate Base Rate Loans, all payments of
principal which would otherwise be applied to such Eurodollar Loans shall be
applied instead to such Alternate Base Rate Loans.  If the obligation of any
Bank to accept and purchase Bankers' Acceptances shall be suspended pursuant to
Section 6.1, 6.2 or 6.3 hereof, all advances which would otherwise be made by
such Bank by way of acceptance and purchase of Bankers' Acceptances shall be
made instead as Canadian Prime Rate Loans (and, if an event referred to in
Section 6.1(b) or 6.3 hereof has occurred and such Bank so requests by notice
to the Company with a copy to the Paying Agent, the face amount of each
Bankers' Acceptance of such Bank then outstanding shall be automatically
converted into a Canadian Prime Rate Loan on the date specified by such Bank in
such notice).

         6.5             Compensation.  Subject to Section 13.6 hereof, the
Company shall pay to the Paying Agent for the account of each Bank, within four
(4) Business Days after demand therefor by such Bank through the Administrative
Agent, such amount or amounts as shall be sufficient (in the reasonable opinion
of such Bank) to compensate it for any loss, cost or expense incurred by it as
a result of:

         (a)             any payment, prepayment or conversion of a Eurodollar
Loan made by such Bank or a Bankers' Acceptance accepted by such Bank on a date
other than the last day of an Interest Period for such Eurodollar Loan or the
specified maturity date for such Bankers' Acceptance, as the case may be; or

         (b)             any failure by the Company to borrow a Eurodollar Loan
to be made by such Bank or to issue a Bankers' Acceptance to be accepted and
purchased by such Bank on the date for such borrowing or such issuance
specified in the relevant notice under Section 5.5 hereof or to convert a
Eurodollar Loan into a Bankers' Acceptance or a Loan of another Type or to
convert a Bankers' Acceptance into a Loan on such date after giving notice of
such conversion;

such compensation to include, without limitation, any loss or expense incurred
by reason of the liquidation or reemployment of deposits or other funds
acquired by the applicable Bank to fund or maintain its share of any Loan or to
fund the acceptance and purchase of any Bankers' Acceptance.  Compensation due
pursuant to this Section with respect to Bankers' Acceptances shall be
calculated using the Canadian Bankers' Acceptance Discount Rate for bankers'
acceptances maturing on (or as close as reasonably possible) to the maturity
date of the Bankers' Acceptances with respect to which such compensation arises
(versus the actual Canadian Bankers' Acceptance Discount Rate for such Bankers'
Acceptances).  Subject to Section 6.8, each determination of the amount of such
compensation by a Bank shall be conclusive and binding, absent manifest error,
and may be computed using any reasonable averaging and attribution method.

         6.6             Additional Costs in Respect of Letters of Credit.  If
as a result of any Regulatory Change there shall be imposed, modified or deemed
applicable any tax, reserve, special deposit





                                       47
<PAGE>   54
or similar requirement against or with respect to or measured by reference to
Letters of Credit issued or to be issued hereunder or participations in such
Letters of Credit, and the result shall be to increase the cost to any Bank of
issuing or maintaining any Letter of Credit or any participation therein, or
reduce any amount receivable by any  Bank hereunder in respect of any Letter of
Credit or any participation therein (which increase in cost, or reduction in
amount receivable, shall be the result of such Bank's reasonable allocation of
the aggregate of such increases or reductions resulting from such event), then
such Bank shall notify the Company through the Administrative Agent, and upon
demand therefor by such Bank through the Administrative Agent, the Company
(subject to Section 13.6 hereof) shall pay to such Bank, from time to time as
specified by such Bank, such additional amounts as shall be sufficient to
compensate such Bank for such increased costs or reductions in amount.  Before
making such demand pursuant to this Section 6.6, such Bank will designate a
different available Applicable Lending Office for the Letter of Credit of such
Bank or take such other action as the Company may request, if such designation
or action will avoid the need for, or reduce the amount of, such compensation
and will not, in the sole opinion of such Bank exercised in good faith, be
disadvantageous to such Bank.  A statement as to such increased costs or
reductions in amount incurred by such Bank, submitted by such Bank to the
Company, shall be conclusive as to the amount thereof, absent manifest error.

         6.7             Capital Adequacy.  If any Bank shall have determined
that the adoption after the date hereof or effectiveness after the date hereof
(whether or not previously announced) of any applicable law, rule, regulation
or treaty regarding capital adequacy, or any change therein after the date
hereof, or any change in the interpretation or administration thereof after the
date hereof by any Governmental Authority charged with the interpretation or
administration thereof, or compliance by any Bank (or its Applicable Lending
Office) with any request or directive after the date hereof regarding capital
adequacy (whether or not having the force of law) of any such Governmental
Authority has or would have the effect of reducing the rate of return on such
Bank's capital as a consequence of such Bank's obligations hereunder, under the
Loans made by it, under the Bankers' Acceptances accepted and purchased by it,
under the Letters of Credit and under the Notes held by it to a level below
that which such Bank could have achieved but for such adoption, change or
compliance (taking into consideration such Bank's policies with respect to
capital adequacy) by an amount deemed by such Bank to be material, then from
time to time, upon satisfaction of the conditions precedent set forth in this
Section 6.7, upon demand by such Bank (with a copy to the Administrative Agent
and the Paying Agent), the Company (subject to Section 13.6 hereof) shall pay
to such Bank such additional amount or amounts as will compensate such Bank for
such reduction.  A certificate as to such amounts, submitted to the Company and
the Administrative Agent and the Paying Agent by such Bank, setting forth the
basis for such Bank's determination of such amounts, shall constitute a demand
therefor and shall be conclusive and binding for all purposes, absent manifest
error.  The Company shall pay the amount shown as due on any such certificate
within four (4) Business Days after delivery of such certificate.  Subject to
Section 6.8, in preparing such certificate, a Bank may employ such assumptions
and allocations of costs and expenses as it shall in good faith deem reasonable
and may use any reasonable averaging and attribution method.





                                       48
<PAGE>   55
         6.8             Limitation on Additional Charges; Substitute Banks;
Non-Discrimination.  Anything in this Section 6 notwithstanding:

         (a)             the Company shall not be required to pay to any Bank
reimbursement with regard to any costs or expenses, unless such Bank notifies
the Company of such costs or expenses within 90 days after the date paid or
incurred;

         (b)             none of the Banks shall be permitted to pass through
to the Company charges and costs under this Section 6 on a discriminatory basis
(i.e., which are not also passed through by such Bank to other customers of
such Bank similarly situated where such customer is subject to documents
providing for such pass through); and

         (c)             if any Bank elects to pass through to the Company any
material charge or cost under this Section 6 or elects to terminate the
availability of Eurodollar Loans or Bankers' Acceptances for any material
period of time, the Company may, within 60 days after the date of such event
and so long as no Default shall have occurred and be continuing, elect to
terminate such Bank as a party to this Agreement; provided that, concurrently
with such termination the Company shall (i) if the Administrative Agent and
each of the other Banks shall consent, pay that Bank all principal, interest
and fees and other amounts owed to such Bank through such date of termination
or (ii) have arranged for another financial institution approved by the
Administrative Agent (such approval not to be unreasonably withheld) as of such
date, to become a substitute Bank for all purposes under this Agreement in the
manner provided in Section 13.5; provided further that, prior to substitution
for any Bank, the Company shall have given written notice to the Administrative
Agent and the Paying Agent of such intention and the Banks shall have the
option, but no obligation, for a period of 60 days after receipt of such
notice, to increase their Commitments in order to replace the affected Bank in
lieu of such substitution.

         SECTION 7.      CONDITIONS PRECEDENT.

         7.1             Initial Loans and Acceptance and Purchase of Bankers'
Acceptances.  The obligation of each Bank or  any applicable Issuer to make its
initial Loans after the date hereof or to accept and purchase the initial
Bankers' Acceptance after the date hereof or issue or participate in a Letter
of Credit after the date hereof (whichever shall first occur) hereunder is
subject to the following conditions precedent, each of which shall have been
fulfilled or waived to the satisfaction of the Majority Banks:

         (a)             Corporate Action and Status.  The Administrative Agent
shall have received from the appropriate Governmental Authorities certified
copies of the Organizational Documents (other than bylaws) of the Parent and
each of its Subsidiaries, and evidence satisfactory to the Administrative Agent
of all corporate action taken by the Parent or any of its Subsidiaries
authorizing the execution, delivery and performance of the Loan Documents and
all other documents related to this Agreement to which it is a party
(including, without limitation, a certificate of the secretary of each such
party setting forth the resolutions of its Board of





                                       49
<PAGE>   56




Directors authorizing the transactions contemplated thereby and attaching a
copy of its bylaws), together with such certificates as may be appropriate to
demonstrate the qualification and good standing of and payment of taxes by the
Parent and each of its Subsidiaries in each state or province in which such
qualification is necessary.

         (b)             Incumbency.  The Parent and each Relevant Party shall
have delivered to the Administrative Agent a certificate in respect of the name
and signature of each of the officers (i) who is authorized to sign on its
behalf the applicable Loan Documents related to any Loan or the issuance of any
Letter of Credit and (ii) who will, until replaced by another officer or
officers duly authorized for that purpose, act as its representative for the
purposes of signing documents and giving notices and other communications in
connection with any Loan or the issuance of any Letter of Credit.  The Agents
and each Bank may conclusively rely on such certificates until they receive
notice in writing from the Parent or the appropriate Relevant Party to the
contrary.

         (c)             Notes.  The Administrative Agent shall have received
the appropriate Notes of the Company for each Bank, duly completed and
executed.

         (d)             Loan Documents.  The Company and each other Relevant
Party shall have duly executed and delivered the other Loan Documents to which
it is a party (in such number of copies as the Administrative Agent shall have
requested) and each such Loan Document shall be in form satisfactory to
Administrative Agent.  Each such Loan Document shall be in substantially the
form furnished to the Banks prior to their execution of this Agreement,
together with such changes therein as the Administrative Agent may approve.

         (e)             Fees and Expenses. The Company shall have paid to the
Paying Agent for the account of each Bank all accrued and unpaid commitment
fees and other fees in the amounts previously agreed upon in writing among the
Company and the respective Agents; and shall have in addition paid to the
Paying Agent all amounts payable under Section 9.7 hereof, on or before the
date of this Agreement.

         (f)             Opinions of Counsel.  The Administrative Agent shall
have received (1) an opinion of Vinson & Elkins L.L.P., counsel to the Parent
and its Subsidiaries, in form and substance reasonably satisfactory to the
Administrative Agent and (2) an opinion of Bennett Jones Verchere, Canadian
counsel to the Parent and its Subsidiaries, in form and substance reasonably
satisfactory to the Administrative Agent.

         (g)             Execution by Banks.  The Administrative Agent shall
have received counterparts of this Agreement executed and delivered by or on
behalf of each of the Banks or the Administrative Agent shall have received
evidence satisfactory to it of the execution and delivery by each of the Banks
of a counterpart hereof.





                                       50
<PAGE>   57
         (h)             Consents.  The Administrative Agent shall have
received evidence satisfactory to it that, except as disclosed in the
Disclosure Statement, all material consents of each Governmental Authority and
of each other Person, if any, reasonably required in connection with (a) the
Loans, the Bankers' Acceptances and the Letters of Credit and (b) the
execution, delivery and performance of this Agreement and the other Loan
Documents have been satisfactorily obtained.

         (i)             Disclosure Statement.  The Administrative Agent shall
have received the Disclosure Statement, which shall be in form and substance
satisfactory to it.

         (j)             Novalta Closing Documents.  The Administrative Agent
shall have received true, correct and complete copies of each of the closing
documents required to be delivered pursuant to the Novalta Contract, together
with such evidence as the Administrative Agent may reasonably require to
confirm that the transactions therein contemplated will be closed in accordance
with the terms of Novalta Contract upon funding and disbursement of the initial
advance hereunder.

         (k)             Intercreditor Agreement.  The Administrative Agent
shall have received a fully executed original counterpart of the Intercreditor
Agreement in the form of Exhibit I hereto.

         (l)             Amendment to U.S. Facility.  The Administrative Agent
shall have received a fully executed original counterpart of an amendment to
the U.S. Facility in the form of Exhibit J hereto.

         (m)             Other Documents.  The Administrative Agent shall have
received such other documents consistent with the terms of this Agreement and
relating to the transactions contemplated hereby as the Administrative Agent
may reasonably request.

         All provisions and payments required by thisSection 7.1 are subject to
the provisions of Section 13.6.

         7.2             Initial and Subsequent Loans.  The obligation of each
Bank or any applicable Issuer to make any Loan (including, without limitation,
its initial Loan) to be made by it hereunder or to accept and purchase Bankers'
Acceptances or to issue or participate in any Letter of Credit is subject to
the additional conditions precedent that (i) the Administrative Agent and the
Paying Agent shall have received a Request for Extension of Credit and such
other certifications as the Administrative Agent may reasonably require and
(ii) as of the date of such Loan or such acceptance and purchase or such
issuance, and after giving effect thereto:

         (a)             no Default shall have occurred and be continuing;

         (b)              except for facts timely disclosed to the
Administrative Agent from time to time in writing, which facts (I) are not
materially more adverse to the Parent and its Subsidiaries, (II)





                                       51
<PAGE>   58
do not materially decrease the ability of the Banks to collect the Obligations
as and when due and payable and (III) do not materially increase the liability
of any of the Agent or any of the Banks, in each case compared to those facts
existing on the date hereof and the material details of which have been set
forth in the Financial Statements delivered to the Administrative Agent prior
to the date hereof or in the Disclosure Statement, and except for  the
representations set forth in the Loan Documents which, by their terms, are
expressly (or by means of similar phrasing) made as of the date hereof only,
the representations and warranties made in each Loan Document shall be true and
correct in all material respects on and as of the date of the making of such
Loan or such acceptance and purchase or such issuance, with the same force and
effect as if made on and as of such date;

         (c)             the making of such Loan or the acceptance and purchase
of such Bankers' Acceptance or the issuance of such Letter of Credit shall not
violate any Legal Requirement applicable to any Bank.

         Each Request for Extension of Credit by the Company hereunder or
request for issuance of a Letter of Credit shall include a representation and
warranty by the Company to the effect set forth in Subsections 7.2(a) and (b)
(both as of the date of such notice and, unless the Company otherwise notifies
the Administrative Agent prior to the date of such borrowing or issuance, as of
the date of such borrowing or issuance).

         SECTION 8.      REPRESENTATIONS AND WARRANTIES.To induce the Banks to
enter into this Agreement and to make the Loans, accept and purchase Bankers'
Acceptances and issue or participate in the Letters of Credit, the Company (or,
where applicable, the Parent) represents and warrants (such representations and
warranties to survive any investigation and the making of the Loans, the
acceptance and purchase Bankers' Acceptances and the issuance of the Letters of
Credit) to the Banks and the Agents as follows:

         8.1             Corporate Existence.  The Parent and each Subsidiary
of the Parent are corporations duly incorporated and organized, legally
existing and in good standing under the laws of the respective jurisdictions in
which they are incorporated, and are duly qualified as foreign corporations in
all jurisdictions wherein the property owned or the business transacted by them
makes such qualification necessary and the failure to so qualify could
reasonably be expected to result in a Material Adverse Effect.

         8.2             Corporate Power and Authorization.  Each of the
Company and the other Relevant Parties is duly authorized and empowered to
execute, deliver, and perform the Loan Documents to which it is a party; and
all corporate action on the part of the Company and the other Relevant Parties
requisite for the due creation and issuance of the Notes and for the due
execution, delivery, and performance of this Agreement and the other Loan
Documents to which each of the Company and the other Relevant Parties is a
party has been duly and effectively taken.





                                       52
<PAGE>   59
         8.3             Binding Obligations.  This Agreement, the Notes and
the other Loan Documents constitute legal, valid and binding obligations of the
Company and the other Relevant Parties, to the extent each is a party thereto,
enforceable against the Company and the other Relevant Parties, to the extent
each is a party thereto, in accordance with their respective terms, except as
may be limited by (i) any applicable bankruptcy, insolvency, fraudulent
transfer, winding up, arrangement, liquidation, reorganization, moratorium or
other similar laws affecting creditors' rights generally, (ii) equitable
limitations on the availability of remedies, (iii) the statutory power of a
court to grant relief from forfeiture, (iv) applicable laws regarding
limitations of actions, (v) general principles of equity which may apply to any
proceeding in equity or at law, and (vi) the powers of a court to stay
proceedings before it and to stay the execution of judgments.

         8.4             No Legal Bar or Resultant Lien.  The Company's and
each of the other Relevant Parties' creation, issuance, execution, delivery and
performance of this Agreement, the Notes and the other Loan Documents, to the
extent they are parties thereto, do not and will not violate any provisions of
the Organizational Documents of the Company or any other Relevant Party or any
Subsidiary of the Parent, or any Key Contract or any Legal Requirement to which
the Company or any other Relevant Party or any Subsidiary of the Parent is
subject or by which its property may be presently bound or encumbered, or
result in the creation or imposition of any Lien upon any properties of the
Company or any other Relevant Party or any Subsidiary of the Parent, other than
those permitted by this Agreement.

         8.5             No Consent.  Except as set forth in the Disclosure
Statement, the Company's creation and issuance of the Notes and the Company's
and each of the other Relevant Parties' execution, delivery, and performance of
this Agreement, the Notes and the other Loan Documents to which they are
parties do not and will not require the consent or approval of any Person other
than such consents and/or approvals obtained contemporaneously with or prior to
the execution of this Agreement, including, without limitation, any
Governmental Authorities, other than those consents the failure to obtain which
could not be reasonably expected to have a Material Adverse Effect.

         8.6             Financial Condition.  The audited consolidated and
unaudited consolidating annual financial statements of the Parent and its
Subsidiaries for the year ended December 31, 1992 and the unaudited
consolidated interim financial statements of the Parent and its Subsidiaries
for the quarter and three-month period ended September 30, 1993, which have
been delivered to the Banks, have been prepared in accordance with GAAP, and
present fairly the financial condition and results of the operations of the
Parent and its Subsidiaries for the period or periods stated (subject only to
normal year-end audit adjustments with respect to the unaudited interim
statements).  No material adverse change, either in any case or in the
aggregate, has occurred since September 30, 1993 in the assets, liabilities,
financial condition, business, operations, affairs or circumstances of the
Parent and its Subsidiaries taken as a whole, except as disclosed to the Banks
in the Disclosure Statement.  Each Engineering Report and Parent Report fairly
presents the values and prospective performances of the property described
therein and there are





                                       53
<PAGE>   60
no statements or conclusions therein which were based upon or included
materially misleading information or fail to take into account material
information.

         8.7             Investments and Guaranties.  As of the date hereof,
neither the Parent nor any Subsidiary of the Parent had made Investments in,
advances to, or Guarantees of, the obligations of any Person, except as (a)
disclosed to the Banks in the Disclosure Statement or (b) not prohibited by
applicable provisions of Section 10.

         8.8             Liabilities and Litigation.  Neither the Parent nor
any Subsidiary of the Parent has any material (individually or in the
aggregate) liabilities, direct or contingent, except as (a) disclosed or
referred to in the Financial Statements, (b) disclosed to the Banks in the
Disclosure Statement, (c) disclosed in a notice to the Administrative Agent
pursuant to Section 9.11 with respect to such as could reasonably be expected
to have a Material Adverse Effect or (d) not prohibited by applicable
provisions of Section 10.  Except as (a) described in the Financial Statements,
(b) otherwise disclosed to the Banks in the Disclosure Statement, (c) disclosed
in a notice to the Administrative Agent pursuant to Section 9.11 with respect
to such as could reasonably be expected to have a Material Adverse Effect or
(d) not prohibited by applicable provisions of Section 10, no litigation,
legal, administrative or arbitral proceeding, investigation, or other action of
any nature exists or (to the knowledge of the Parent or the Company) is
threatened against or affecting the Parent or any Subsidiary of the Parent
which could reasonably be expected to result in any judgment which could
reasonably be expected to have a Material Adverse Effect, or which in any
manner challenges or may challenge or draw into question the validity of this
Agreement, the Notes or any other Loan Document, or enjoins or threatens to
enjoin or otherwise restrain any of the transactions contemplated by any of
them.

         8.9             Taxes and Governmental Charges.  The Parent and its
Subsidiaries have filed, or obtained extensions with respect to the filing of,
all material tax returns and reports required to be filed and have paid all
material taxes, assessments, fees and other governmental charges levied upon
any of them or upon any of their respective properties or income which are due
and payable, including interest and penalties, or have provided adequate
reserves for the payment thereof.

         8.10            Title to Properties.  The Parent and its Subsidiaries
have good and defensible  title to their respective properties included in the
Borrowing Base (including, without limitation, all fee and leasehold
interests), free and clear of all Liens except (a) those referred to in the
Financial Statements, (b) as disclosed to the Banks in the Disclosure Statement
or (c) as permitted by Section 10.2.

         8.11            Defaults.  Neither the Parent nor any Subsidiary of
the Parent is in default, which default could reasonably be expected to have a
Material Adverse Effect, under any indenture, mortgage, deed of trust,
agreement or other instrument to which the Parent or any Subsidiary of the
Parent is a party or by which the Parent or any Subsidiary of the Parent or the
property of the Parent or any Subsidiary of the Parent is bound, except as (a)
disclosed to the Banks in





                                       54
<PAGE>   61
the Disclosure Statement, (b) disclosed in a notice to the Administrative Agent
pursuant to Section 9.11 with respect to such as could reasonably be expected
to have a Material Adverse Effect or (c) specifically permitted by applicable
provisions of Section 10.  No Default under this Agreement, the Notes or any
other Loan Document has occurred and is continuing.

         8.12            Location of Businesses and Offices.  Except to the
extent that the Administrative Agent has been furnished written notice to the
contrary or of additional locations, pursuant to Section 9.11, the Company's
principal place of business and chief executive offices are located at the
address stated on the signature page hereof and the principal places of
business and chief executive offices of each Subsidiary of the Parent are
described on Exhibit D hereto.  The Parent's principal place of business and
chief executive office is at 1001 Fannin, Suite 1700, Houston, Texas  77002.

         8.13            Compliance with Law.  Neither the Parent nor any
Subsidiary of the Parent (except as (a) disclosed to the Banks in the
Disclosure Statement, (b) disclosed in a notice to the Administrative Agent
pursuant to Section 9.11 with respect to such as could reasonably be expected
to have a Material Adverse Effect or (c) not prohibited by applicable
provisions of Section 10):

         (a)             is in violation of any Legal Requirement; or

         (b)             has failed to obtain any license, permit, franchise or
other governmental authorization necessary to the ownership of any of their
respective properties or the conduct of their respective business;

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

         8.14            Margin Stock.  None of the proceeds of the Loans will
be used for the purpose of, and neither the Parent nor any Subsidiary of the
Parent is engaged in the business of extending credit for the purpose of (a)
purchasing or carrying any "margin stock" as defined in Regulation U of the
Board of Governors of the Federal Reserve System (12 C.F.R. Part 221) or (b)
reducing or retiring any indebtedness which was originally incurred to purchase
or carry margin stock, if such purpose under either (a) or (b) above would
constitute this transaction a "purpose credit" within the meaning of said
Regulation U, or for any other purpose which would constitute this transaction
a "purpose credit".  Neither the Parent nor any Subsidiary of the Parent is
engaged principally, or as one of its important activities, in the business of
extending credit for the purpose of purchasing or carrying margin stocks.
Neither the Parent nor any Subsidiary of the Parent nor any Person acting on
behalf of the Parent or any Subsidiary of the Parent has taken or will take any
action which might cause the Notes or any of the Loan Documents, including this
Agreement, to violate Regulation U or any other regulation of the Board of
Governors of the Federal Reserve System, or to violate any similar provision of
the Securities Exchange Act of 1934 or any rule or regulation under any such
provision thereof.





                                       55
<PAGE>   62
         8.15            Subsidiaries.  The Parent has no Subsidiaries as of
the date of this Agreement except those shown in Exhibit D hereto.

         8.16            ERISA.  With respect to each Plan, the Parent and each
ERISA Affiliate   have fulfilled their obligations, including obligations under
the minimum funding standards of ERISA and the Code, and are in compliance in
all material respects with the provisions of ERISA and the Code.  The Parent
has no knowledge of any event which could result in a liability of the Parent
or any ERISA Affiliate to the PBGC or a Plan (other than to make contributions
in the ordinary course).  Since the effective date of Title IV of ERISA, there
have not been any nor are there now existing any events or conditions that
would cause the Lien provided under Section 4068 of ERISA to attach to any
property of the Parent or any ERISA Affiliate.  There are no Unfunded
Liabilities with respect to any Plan other than those specifically described in
the certificate delivered in accordance with Section 7.1(i).  No "prohibited
transaction" has occurred with respect to any Plan.

         8.17            Investment Company Act.  Neither the Parent nor any of
its Subsidiaries is an investment company within the meaning of the Investment
Company Act of 1940, as amended, or, directly or indirectly, controlled by or
acting on behalf of any Person which is an investment company, within the
meaning of said Act.

         8.18            Public Utility Holding Company Act.  Neither the
Parent nor any of its Subsidiaries (i) is subject to regulation under the
Public Utility Holding Company Act of 1935, as amended (the "PUHC Act"), except
as to Section 9(a)(2) thereof (15 U.S.C.A. Section 79(i)(a)(2)), or (ii) is in
violation of any of the provisions, rules, regulations or orders of or under
the PUHC Act.  Further, none of the transactions contemplated under this
Agreement, including without limitation, the making of the Loans, the issuance
of the Letters of Credit and the creation of any Liens pursuant to the Loan
Documents, shall cause or constitute a violation of any of the provisions,
rules, regulations or orders of or under the PUHC Act and the PUHC Act does not
in any manner impair the legality, validity or enforceability of the Notes or
any Liens created pursuant to the Loan Documents.  The Parent has duly filed
with the Securities and Exchange Commission good faith applications (each an
"Application") under Section 2(a)(8) of the PUHC Act (15 U.S.C.A. Section
79(b)(a)(8)) for a declaration of non-subsidiary status pursuant to such
Section 2(a)(8) with respect to each Person (each a "Specified Shareholder")
which owns, controls or holds with power to vote, directly or indirectly, a
sufficient quantity of the voting securities of the Parent to be construed as a
"holding company", as such term is defined in the PUHC Act, in respect of the
Parent.  All of the information contained in such Applications, as amended, was
true as of the most recent filing date with respect thereto (provided that the
Parent may, unless it has actual current knowledge to the contrary, rely solely
upon written information furnished by any Specified Shareholder with respect to
background information about the Specified Shareholder and the nature of the
ownership by such Specified Shareholder or its Affiliates of the voting
securities of the Parent), and the Parent knows of no reason why each such
Application, if acted upon by the Securities and Exchange Commission, would not
be approved.  True and correct copies of each such Application and any
amendments thereto, as





                                       56
<PAGE>   63
filed, have been furnished to the Administrative Agent.  The Parent has not
received any written notice from the Securities and Exchange Commission with
respect to any such Application other than as disclosed in writing to the
Administrative Agent.

         8.19            Environmental Matters.  Except as disclosed in the
Disclosure Statement, (i) the Parent and it Subsidiaries have obtained and
maintained in effect all Environmental Permits (or has initiated the necessary
steps to transfer the Environmental Permits into its name), the failure to
obtain which could reasonably be expected to have a Material Adverse Effect,
(ii) the Parent and its Subsidiaries and their properties, assets, business and
operations have been and are in compliance with all applicable Requirements of
Environmental Law and Environmental Permits failure to comply with which could
reasonably be expected to have a Material Adverse Effect, (iii) the Parent and
its Subsidiaries and their properties, assets, business and operations are not
subject to any (A) Environmental Claims or (B) Environmental Liabilities, in
either case direct or contingent, and whether known or unknown, arising from or
based upon any act, omission, event, condition or circumstance occurring or
existing on or prior to the date hereof which could reasonably be expected to
have a Material Adverse Effect, and (iv)  no Responsible Officer of the Parent
or any of its Subsidiaries has received any notice of any violation or alleged
violation of any Requirements of Environmental Law or Environmental Permit or
any Environmental Claim in connection with its assets, properties, business or
operations which could reasonably be expected to have a Material Adverse
Effect.  The  liability (including without limitation any Environmental
Liability and any other damage to persons or property), if any, of the Parent
and its Subsidiaries and with respect to their properties, assets, business and
operations which is reasonably expected to arise in connection with
Requirements of Environmental Laws currently in effect and other environmental
matters presently known by a Responsible Officer of the Parent will not have a
Material Adverse Effect.  No Responsible Officer of the Parent knows of any
event or condition with respect to Environmental Matters with respect to any of
its properties or the properties of any of its Subsidiaries which could
reasonably be expected to have a Material Adverse Effect.  For purposes of this
Section 8.19, "Environmental Matters" shall mean matters relating to pollution
or protection of the environment, including, without limitation, emissions,
discharges, releases or threatened releases of Hazardous Substances into the
environment (including, without limitation, ambient air, surface water or
ground water, or land surface or subsurface), or otherwise relating to the
manufacture, processing, distribution, use, treatment, storage, disposal,
transport or handling of Hazardous Substances.

         8.20            Claims and Liabilities.  Except as disclosed to the
Banks in writing, neither the Parent nor any of its Subsidiaries has accrued
any  liabilities under gas purchase contracts for gas not taken, but for which
it is liable to pay if not made up and which, if not paid, would have a
Material Adverse Effect.  Except as disclosed to the Banks in writing, no
claims exist against the Parent or its Subsidiaries for gas imbalances which
claims if adversely determined would have a Material Adverse Effect.  No
purchaser of product supplied by the Parent or any of its Subsidiaries has any
claim against the Parent or any of its Subsidiaries for product paid for, but
for which delivery was not taken as and when paid for, which claim if adversely
determined would have a Material Adverse Effect.





                                       57
<PAGE>   64
         8.21            Solvency.  Neither the Parent nor the Parent and its
Subsidiaries, on a consolidated basis, is "insolvent", as such term is used
(and, where applicable, defined) in (i) the Bankruptcy Code and (ii) the
Companies' Creditors Arrangement Act (Canada).

         SECTION 9.      AFFIRMATIVE COVENANTS.  A deviation from the
provisions of this Section 9 will not constitute a Default under this Agreement
if such deviation is consented to in writing by the Majority Banks.  Without
the prior written consent of the Majority Banks, the Company (or, where
applicable, the Parent) agrees with the Banks and the Agents that, so long as
any of the Commitments is in effect and until payment in full of all Loans
hereunder, the repayment in full of the full face amount of all outstanding
Bankers' Acceptances, the termination or expiry of all Letters of Credit and
payment in full of Letter of Credit Liabilities, all interest thereon and all
other amounts payable by the Company hereunder:

         9.1             Financial Statements and Reports.  The Parent will
promptly furnish to any Bank from time to time upon request such information
regarding the business and affairs and financial condition of the Parent and
its Subsidiaries as such Bank may reasonably request, and will furnish to the
Administrative Agent and each of the Banks:

         (a)             Annual Reports - promptly after becoming available and
in any event within 100 days after the close of each fiscal year of the Parent:

                         (i)      the audited consolidated balance sheet,
                                  statement of earnings and statement of cash
                                  flows of ENSTAR Alaska each as of the end of
                                  such year or for such year, as applicable;

                         (ii)     the audited consolidated balance sheet of the
                                  Parent and its Subsidiaries  as of the end of
                                  such year;

                         (iii)    the audited consolidated statement of
                                  earnings of the Parent and its Subsidiaries 
                                  for such year;

                         (iv)     the audited consolidated statement of cash
                                  flows of the Parent and its Subsidiaries for 
                                  such year;

                         (v)      the unaudited consolidating balance sheet and
                                  statement of earnings of ENSTAR Alaska, each
                                  for such year or as of the end of such year,
                                  as the case may be;

                         (vi)     the unaudited consolidating balance sheet and
                                  statement of earnings of the Parent and its
                                  Subsidiaries, each for such year or as of the
                                  end of such year, as the case may be;





                                       58
<PAGE>   65
                         (vii)    the unaudited consolidated balance sheet,
                                  statement of earnings and statement of cash
                                  flows and unaudited consolidating balance
                                  sheet and statement of earnings of the
                                  Company and its Subsidiaries, each for such
                                  year or as of the end of such year, as the
                                  case may be;

                         (viii)   a report prepared by a petroleum engineer,
                                  who may be an employee of the Parent or its
                                  Subsidiaries, setting forth the historical
                                  monthly production data for Hydrocarbons
                                  produced and sold by the Parent and its
                                  Subsidiaries for such year;

setting forth in each case in comparative form the corresponding figures for
the preceding fiscal year, and, in the case of the audited Financial
Statements, audited and accompanied by the related opinion of KPMG Peat Marwick
or other independent certified public accountants of recognized national
standing acceptable to the Majority Banks, which opinion shall state that such
audited balance sheets and statements have been prepared in accordance with
GAAP consistently followed throughout the period indicated and fairly present
the consolidated financial condition and results of operations of the
applicable Persons as at the end of, and for, such fiscal year; and

         (b)             Quarterly Reports - as soon as available and in any
event within 50 days after the end of each of the first three quarterly periods
in each fiscal year of the Parent:

                         (i)      the unaudited consolidated balance sheet,
                                  statement of earnings and statement of cash
                                  flows of ENSTAR Alaska, each as of the end of
                                  such quarter or for such quarter and for the
                                  period from the beginning of the fiscal year
                                  to the close of such quarter, as the case may
                                  be;

                         (ii)     the unaudited consolidated balance sheet of
                                  the Parent and its Subsidiaries as of the end
                                  of such quarter;

                         (iii)    the unaudited consolidated statement of
                                  earnings of the Parent and its Subsidiaries
                                  for such quarter and for the period from the
                                  beginning of the fiscal year to the close of
                                  such quarter;

                         (iv)     the unaudited consolidated statement of cash
                                  flows of the Parent and its Subsidiaries for
                                  such quarter and for the period from the
                                  beginning of the fiscal year to the close of
                                  such quarter;

                         (v)      the unaudited consolidating balance sheet and
                                  statement of earnings of the Parent and its
                                  Subsidiaries, each for such quarter and for
                                  the period from the beginning of the fiscal
                                  year to the close of such quarter;





                                       59
<PAGE>   66
                         (vi)     the unaudited consolidated balance sheet,
                                  statement of earnings and statement of cash
                                  flows and unaudited consolidating balance
                                  sheet and statement of earnings of the
                                  Company and its Subsidiaries, each for such
                                  quarter and for the period from the beginning
                                  of the fiscal year to the close of such
                                  quarter;

                         (vii)    a report prepared by a petroleum engineer,
                                  who may be an employee of the Parent or its
                                  Subsidiaries, setting forth the historical
                                  monthly production data for Hydrocarbons
                                  produced and sold by the Parent and its
                                  Subsidiaries for such quarter;

all of items (i) through (v) above prepared on substantially the same
accounting basis as the annual reports described in Subsection 9.1(a), subject
to normal changes resulting from year-end adjustments; and

         (c)              Parent Report - promptly after becoming available and
in any event on or before September 1 of each year, a Parent Report; and

         (d)             Other Bank Requirements - at such time as the same are
required to be furnished to other lenders under other financing arrangements to
which the Parent or any of its Subsidiaries may be a party or be bound from
time to time, a copy of any report, certificate, affidavit or other information
required to be furnished to any such lender; and

         (e)             SEC and Other Reports - promptly upon their becoming
publicly available, one copy of each financial statement, report, notice or
definitive proxy statement sent by the Parent or any of its Subsidiaries to
shareholders generally, and of each regular or periodic report and any
registration statement, prospectus or written communication (other than
transmittal letters) in respect thereof filed by the Parent or any of its
Subsidiaries with, or received by the Parent or any of its Subsidiaries in
connection therewith from, any securities exchange or the Securities and
Exchange Commission or any successor agency; and

         (f)             Engineering Report - promptly after becoming available
and in any event on or before March 15 of each year, commencing with March 15,
1994, an Engineering Report, together with unaudited financial reports with
respect to the Pipeline Operations (as defined in the U.S. Facility, without
amendment except as permitted under the Intercreditor Agreement).

         All of the balance sheets and other financial statements referred to
in this Section 9.1 will be in such detail as any Bank may reasonably request
and will conform to GAAP applied on a basis consistent with those of the
Financial Statements as of December 31, 1992.  In addition, if GAAP shall
change with respect to any matter relative to determination of compliance with
this Agreement, the Parent will also provide  financial information necessary
for the Banks to determine compliance with this Agreement.





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         9.2             Officers' Certificates.  (a) Concurrently with the
furnishing of the annual financial statements pursuant to Subsection 9.1(a),
commencing with the annual financial statements required to be delivered in
1994, the Parent will furnish or cause to be furnished to the Administrative
Agent certificates of compliance, as follows:

                         (i)      a certificate signed by the principal
                                  financial officer of the Parent and the
                                  principal financial officer of the Company in
                                  the form of Exhibit E; and

                         (ii)     a certificate from the independent public
                                  accountants stating that their audit has not
                                  disclosed the existence of any condition
                                  which constitutes a Default, or if their
                                  audit has disclosed the existence of any such
                                  condition, specifying the nature and period
                                  of existence.

         (b)             Concurrently with the furnishing of the quarterly
financial statements pursuant to Subsection 9.1(b), the Parent will furnish to
the Administrative Agent a certificate signed by the principal financial
officer of the Parent and the principal financial officer of the Company in the
form of Exhibit E.

         (c)             Concurrently with the delivery of any Borrowing Base
Certificate under the U.S. Facility, the Parent will furnish to the
Administrative Agent and the Paying Agent a true, correct and complete copy
thereof.

         (d)             Concurrently with the furnishing of any Engineering
Report or Parent Report, the Company will furnish to the Administrative Agent a
certificate signed by an appropriate officer of the Parent and any other
applicable Relevant Party in the form of Exhibit G.

         9.3             Taxes and Other Liens.  The Parent will and will cause
each Subsidiary of the Parent to pay and discharge promptly all taxes,
assessments and governmental charges or levies imposed upon the Parent or such
Subsidiary, or upon the income or any property of the Parent or such
Subsidiary, as well as all claims of any kind (including claims for labor,
materials, supplies, rent and payment of proceeds attributable to Hydrocarbon
production) which, if unpaid, might result in or become a Lien upon any or all
of the property of the Parent or such Subsidiary; provided, however, that
neither the Parent nor such Subsidiary will be required to pay any such tax,
assessment, charge, levy or claims if the amount, applicability or validity
thereof will currently be contested in good faith by appropriate proceedings
diligently conducted and if the Parent or such Subsidiary will have set up
reserves therefor adequate under GAAP.

         9.4             Maintenance.  Except as referred to in Section 8.1 and
8.13, the Parent will and will cause each Subsidiary of the Parent to:  (i)
maintain its corporate existence; (ii) maintain its  rights and franchises,
except for any mergers or consolidations otherwise permitted by this Agreement
and except to the extent failure to so maintain the same would not have a
Material Adverse Effect; (iii) observe and comply (to the extent that any
failure would have a Material Adverse Effect) with all valid Legal Requirements
(including without limitation Requirements





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of Environmental Law); and (iv) maintain (except to the extent failure to so
maintain the same would not have a Material Adverse Effect) its properties (and
any properties leased by or consigned to it or held under title retention or
conditional sales contracts) consistent with the standards of a reasonably
prudent operator at all times and make all repairs, replacements, additions,
betterments and improvements to its properties consistent with the standards of
a reasonably prudent operator.

         9.5             Further Assurances.  The Parent will and will cause
each Subsidiary of the Parent to cure promptly any defects in the creation and
issuance of the Notes and the execution and delivery of the Loan Documents,
including this Agreement.  The Parent at its expense will promptly execute and
deliver to the Administrative Agent upon request all such other and further
documents, agreements and instruments (or cause any of its Subsidiaries to take
such action) in compliance with or accomplishment of the covenants and
agreements of the Parent or any of its Subsidiaries in the Loan Documents,
including this Agreement, or to correct any omissions in the Loan Documents, or
to make any recordings, to file any notices, or obtain any consents, all as may
be necessary or appropriate in connection therewith.

         9.6             Performance of Obligations.  The Company will pay the
Notes according to the reading, tenor and effect thereof; and the Company will
do and perform every act and discharge all of the obligations provided to be
performed and discharged by the Company under this Agreement and the other Loan
Documents at the time or times and in the manner specified, and cause each of
its Subsidiaries to take such action with respect to their obligations to be
performed and discharged under the Loan Documents to which they respectively
are parties.

         9.7             Reimbursement of Expenses.  Whether or not any Loan is
ever made or any Letter of Credit is ever issued, the Company agrees to pay or
reimburse the Administrative Agent for paying the reasonable fees and expenses
of Liddell, Sapp, Zivley, Hill & LaBoon, L.L.P., special counsel to the
Administrative Agent, together with the reasonable fees and expenses of local
counsel engaged by the Administrative Agent, in connection with the negotiation
of the terms and structure of the Obligations, the preparation, execution and
delivery of this Agreement and the other Loan Documents and the making of the
Loans and the issuance of Letters of Credit hereunder, as well as any
modification, supplement or waiver of any of the terms of this Agreement and
the other Loan Documents.  The Company will promptly upon request and in any
event within 30 days from the date of receipt by the Company of a copy of a
bill for such amounts, reimburse any Bank or any Agent for all amounts
reasonably expended, advanced or incurred by such Bank or such Agent to satisfy
any obligation of the Company or any other Relevant Party under this Agreement
or any other Loan Document, to protect the properties or business of the Parent
or any Subsidiary of the Parent, to collect the Obligations, or to enforce the
rights of such Bank or such Agent under this Agreement or any other Loan
Document, which amounts will include without limitation all court costs,
attorneys' fees (but not including allocated costs of in-house counsel), any
engineering fees and expenses, fees of auditors, accountants and appraisers,
investigation expenses, all transfer, stamp, documentary or similar taxes,
assessments or charges levied by any governmental or revenue authority in
respect of any





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of the Loan Documents or any other document referred to therein, all costs,
expenses, taxes, assessments and other charges incurred in connection with any
filing, registration, recording or perfection of any Lien contemplated by any
of the Loan Documents or any document referred to therein, fees and expenses
incurred in connection with such Bank's participation as a member of a
creditors' committee in a case commenced under the Bankruptcy Code or other
similar law of the United States or any state thereof or of Canada or any
province thereof, fees and expenses incurred in connection with lifting the
automatic stay prescribed in Section 362 Title 11 of the United States Code or
in connection with any similar proceeding under the laws of Canada or any
province thereof, and fees and expenses incurred in connection with any action
pursuant to Section 1129 Title 11 of the United States Code or in connection
with any similar proceeding under the laws of Canada or any province thereof,
and all other customary out-of-pocket expenses incurred by such Bank or such
Agent in connection with such matters, together with interest after the
expiration of the 30-day period stated above in this Section if no Event of
Default has occurred and is continuing, or from the date of the request to the
Company if an Event of Default has occurred and is continuing, at either (i)
the Post-Default Rate on each such amount until the date of reimbursement to
such Bank or such Agent, or (ii) if no Event of Default will have occurred and
be continuing, the Alternate Base Rate plus the highest Applicable Margin for
Alternate Base Rate Loans (not to exceed the Highest Lawful Rate) on each such
amount until the date of the Company's receipt of written demand or request by
such Bank or such Agent for the reimbursement of same, and thereafter at the
applicable Post-Default Rate until the date of reimbursement to such Bank or
such Agent.  The obligations of the Company under this Section are compensatory
in nature, shall be deemed liquidated as to amount upon receipt by the Company
of a copy of any invoice therefor, and will survive the non-assumption of this
Agreement in a case commenced under the Bankruptcy Code or other similar law of
the United States or any state thereof or of Canada or any province thereof,
and will remain binding on the Company and any trustee, receiver, or liquidator
of the Company appointed in any such case.

         9.8             Insurance.  The Parent and its Subsidiaries will
maintain, with financially sound and reputable insurers, insurance with respect
to their respective properties and business against such liabilities,
casualties, risks and contingencies and in such types and amounts as is
customary in the case of corporations engaged in the same or similar businesses
and similarly situated.  Upon the request of the Administrative Agent acting at
the instruction of the Majority Banks, the Parent will furnish or cause to be
furnished to the Administrative Agent from time to time a summary of the
insurance coverage of the Parent and its Subsidiaries in form and substance
satisfactory to the Majority Banks in their reasonable judgment, and if
requested will furnish the Administrative Agent copies of the applicable
policies.  Subject to the terms of Section 3 hereof, in the case of any fire,
accident or other casualty causing loss or damage to any properties of the
Parent or any of its Subsidiaries, the proceeds of such policies will be used
(i) to repair or replace the damaged property or (ii) to prepay the
Obligations, at the election of the Company.

         9.9             Accounts and Records.  The Parent will keep and will
cause each Subsidiary of the Parent to keep books of record and account which
fairly reflect all dealings or transactions in relation to their respective
businesses and activities, in accordance with GAAP, which books





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of record and account will be maintained, to the extent necessary to enable
compliance with all provisions of this Agreement, separately for each such
Subsidiary, the Parent and any division of the Parent.

         9.10            Rights of Inspection.  The Parent will permit and will
cause each of its Subsidiaries to permit any officer, employee, or agent of any
Agent or any Bank to meet with the consultants who prepared any applicable
Engineering Report and to review such Engineering Report with such consultants
and to visit and inspect any of the properties of the Parent or such
Subsidiary, examine the Parent's or such Subsidiary's books of record and
accounts, take copies and extracts therefrom, and discuss the affairs, finances
and accounts of the Bank or such Subsidiary with the Parent's or such
Subsidiary's officers, accountants and auditors, all at such reasonable times
during normal business hours and as often as such Agent or such Bank may
reasonably desire, and will assist in all such matters.

         9.11            Notice of Certain Events.  The Parent will promptly
notify the Administrative Agent (and the Administrative Agent will then notify
all of the Banks) if a Responsible Officer of the Parent learns of the
occurrence of, or if the Parent causes or intends to cause, as the case may be:

                         (i)      any event which constitutes a Default,
together with a detailed statement by a responsible officer of the Parent of
the steps being taken to cure the effect of such Default; or

                         (ii)     the receipt of any notice from, or the taking
of any other action by, the holder of any promissory note, debenture or other
evidence of indebtedness of the Parent or any Subsidiary of the Parent or of
any security (as defined in the Securities Act of 1933, as amended) of the
Parent or any Subsidiary of the Parent with respect to a claimed default,
together with a detailed statement by a Responsible Officer of the Parent
specifying the notice given or other action taken by such holder and the nature
of the claimed default and what action the Parent or such Subsidiary is taking
or proposes to take with respect thereto; or

                         (iii)    any legal, judicial or regulatory proceedings
affecting the Parent or any Subsidiary of the Parent or any of the properties
of the Parent or any Subsidiary of the Parent in which the amount involved is
materially adverse to the Parent and its Subsidiaries taken as a whole, and is
not covered by insurance or which, if adversely determined, would have a
Material Adverse Effect; or

                         (iv)     any dispute between the Parent or any
Subsidiary of the Parent and any Governmental Authority or any other Person
which, if adversely determined, could reasonably be expected to have a Material
Adverse Effect; or

                         (v)      any material adverse change, either in any
case or in the aggregate, in the assets, liabilities, financial condition,
proven oil and gas reserves, business, operations, affairs





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or circumstances of the Parent and its Subsidiaries taken as a whole, from
those reflected in the Financial Statements or by the facts warranted or
represented in any Loan Document, including this Agreement; or

                         (vi)     the occurrence of a default or event of
default by the Parent or any Subsidiary of the Parent under any other agreement
to which it is a party, which default or event of default could reasonably be
expected to have a Material Adverse Effect; or

                         (vii)    any change in the accuracy of the
representations and warranties of the Parent or any Subsidiary contained in
this Agreement or any other Loan Document; or

                         (viii)   any material violation or alleged material
violation of any Requirements of Environmental Law or Environmental Permit or
any Environmental Claim or any Environmental Liability; or

                         (ix)     any tariff and rate cases and other material
reports filed by the Parent or any of its Subsidiaries with any Governmental
Authority and any notice to the Parent or any of its Subsidiaries from any
Governmental Authority concerning noncompliance with any applicable Legal
Requirement; or

                         (x)      the existence of any Borrowing Base
Deficiency; or

                         (xi)     within 10 days after the date on which a
Responsible Officer of the Parent has actual knowledge thereof, the receipt of
any notice by the Parent or any of its Subsidiaries of any claim of nonpayment
of, or any attempt to collect or enforce, accounts payable of the Parent or any
of its Subsidiaries exceeding, in the case of any one account payable at one
time outstanding, U.S. $1,000,000 and in the case of all accounts payable in
the aggregate at any one time outstanding, U.S. $3,000,000; or

                         (xii)    any requirement for the payment of all or any
portion of any Indebtedness of the Parent or any of its Subsidiaries prior to
the stated maturity thereof (whether by acceleration or otherwise) or as the
result of any failure to maintain or the reaching of any threshold amount
provided in any promissory note, bond, debenture, or other evidence of
Indebtedness or under any credit agreement, loan agreement, indenture or
similar agreement executed in connection with any of the foregoing; or

                         (xiii)   any notice from the Securities and Exchange
Commission with respect to any Application (as defined in Section 8.18 hereof).

         9.12            ERISA Information and Compliance.  The Parent will
promptly furnish to the Administrative Agent (i) immediately upon receipt, a
copy of any notice of complete or partial withdrawal liability under Title IV
of ERISA and any notice from the PBGC under Title IV of ERISA of an intent to
terminate or appoint a trustee to administer any Plan, (ii) if requested by





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the Administrative Agent, acting on the instruction of the Majority Banks,
promptly after the filing thereof with the United States Secretary of Labor or
the PBGC or the Internal Revenue Service, copies of each annual and other
report with respect to each Plan or any trust created thereunder, (iii)
immediately upon becoming aware of the occurrence of any "reportable event", as
such term is defined in Section 4043 of ERISA, for which the disclosure
requirements of Regulation Section 2615.3 promulgated by the PBGC have not been
waived, or of any "prohibited transaction", as such term is defined in Section
4975 of the Code, in connection with any Plan or any trust created thereunder,
a written notice signed by the President or the principal financial officer of
the Parent or the applicable ERISA Affiliate specifying the nature thereof,
what action the Parent or the applicable ERISA Affiliate is taking or proposes
to take with respect thereto, and, when known, any action taken by the PBGC,
the Internal Revenue Service or the Department of Labor with respect thereto,
(iv) promptly after the filing or receiving thereof by the Parent or any ERISA
Affiliate of any notice of the institution of any proceedings or other actions
which may result in the termination of any Plan, and (v) each request for
waiver of the funding standards or extension of the amortization periods
required by Sections 303 and 304 of ERISA or Section 412 of the Code promptly
after the request is submitted by the Parent or any ERISA Affiliate to the
Secretary of the Treasury, the Department of Labor or the Internal Revenue
Service, as the case may be.  To the extent required under applicable statutory
funding requirements, the Parent will fund, or will cause each ERISA Affiliate
to fund, all current service pension liabilities as they are incurred under the
provisions of all Plans from time to time in effect, and comply with all
applicable provisions of ERISA, except to the extent that any such failure to
comply could not reasonably be expected to have a Material Adverse Effect.  The
Parent covenants that it shall and shall cause each ERISA Affiliate to (1) make
contributions to each Plan in a timely manner and in an amount sufficient to
comply with the contribution obligations under such Plan and the minimum
funding standards requirements of ERISA; (2) prepare and file in a timely
manner all notices and reports required under the terms of ERISA including but
not limited to annual reports; and (3) pay in a timely manner all required PBGC
premiums, in each case, to the extent failure to do so would have a Material
Adverse Effect.

         9.13            Minimum APC Dividends and/or ENSTAR Alaska Advances.
The Parent will receive Dividend Payments from APC and/or permanent advances of
funds from ENSTAR Alaska without any repayment obligation on the part of the
Parent and that would be accounted for as a reduction of the equity of ENSTAR
Alaska not less than, in the aggregate, U.S. $8,000,000 for any 15-month period
ending on the last day of any calendar quarter (unless and to the extent the
same is not permitted by the Alaska Public Utilities Commission or any
successor; provided that if the Alaska Public Utilities Commission or any
successor shall not permit such Dividend Payments and advances, the
Administrative Agent, the Banks and the Company shall endeavor in good faith to
agree on an alternate method of determining the applicable component value of
the Borrowing Base to take such action into account, with the decision of the
Majority Banks to be binding on all of the Banks hereunder).





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         9.14            Minimum ENSTAR Alaska Management Fees.  The Parent
will receive management fees from ENSTAR Alaska during each calendar year not
less than the amount permitted to be recovered by the Alaska Public Utilities
Commission.

         9.15            Minimum ENSTAR Alaska Tax Payments.  The Parent will
receive from ENSTAR Alaska during each calendar year not less than 100% of the
federal income tax liability which would have been payable by ENSTAR Alaska for
the previous year if ENSTAR Alaska were a separate taxable Person.

         SECTION 10.     NEGATIVE COVENANTS.  A deviation from the provisions
of this Section 10 will not constitute a Default under this Agreement if such
deviation is consented to in writing by the Majority Banks.  The Company (or,
where applicable, the Parent) agrees with the Banks and the Agents that, so
long as any of the Commitments is in effect and until payment in full of all
Loans hereunder, the payment in full of the full face amount of all outstanding
Bankers' Acceptances, the termination or expiry of all Letters of Credit and
payment in full of Letter of Credit Liabilities, all interest thereon and all
amounts payable by the Company hereunder:

         10.1            Debts, Guarantees and Other Obligations.  The Parent
will not and will not permit any of its Subsidiaries (other than APC) to incur,
create, assume or in any manner become or be liable in respect of any
Indebtedness (including obligations for the payment of rentals); and the Parent
will not and will not permit any of its Subsidiaries (other than APC) to
Guarantee or otherwise in any way become or be responsible for obligations of
any other Person, whether by agreement to purchase the Indebtedness of any
other Person or 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) for the purpose of
paying or discharging the Indebtedness of any other Person, or otherwise,
except that the foregoing restrictions will not apply to:

         (a)             the Notes, the Bankers' Acceptances or other
Indebtedness under the Loan Documents;

         (b)             liabilities, direct or contingent, of the Parent or
any Subsidiary of the Parent existing on the date of this Agreement which are
reflected in the Financial Statements or the Disclosure Statement and all
renewals, extensions, refinancings and rearrangements, but not increases,
thereof;

         (c)             endorsements of negotiable or similar instruments for
collection or deposit in the ordinary course of business;

         (d)             trade payables, lease acquisition and lease
maintenance obligations, extensions of credit from suppliers or contractors,
liabilities incurred in exploration, development and operation of the Parent's
or any of its Subsidiaries' oil and gas properties or similar obligations from
time to time incurred in the ordinary course of business, other than for
borrowed money,





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which are paid within 90 days after the invoice date (inclusive of applicable
grace periods) or (i) are being contested in good faith, if such reserve as
required by GAAP has been made therefor or (ii) trade accounts payable of the
Parent and its Subsidiaries (with respect to which no legal proceeding to
enforce collection has been commenced or, to the knowledge of a Responsible
Officer of the Parent, threatened) not exceeding, in the aggregate at any time
outstanding, U.S. $5,000,000;

         (e)             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 will be
required by GAAP will have been made therefor;

         (f)             Borrowing Base Debt of the Parent; provided that the
aggregate of all Indebtedness permitted under this Subsection 10.1(f) shall not
exceed the amount by which the then current Borrowing Base exceeds the then
current "Revolving Credit Obligations" under the U.S. Facility;

         (g)             to the extent, if any, not covered by Subsection (b)
hereinabove, the Indebtedness of the Parent to APC evidenced solely by the
Intercompany Notes, as defined in the Beluga Financing Documents and the APC
Long Term Financing Documents, together with any renewals, extensions,
amendments, refinancings, rearrangements, modifications, restatements or
supplements, but not increases (other than increases which are permitted under
the present terms of the Beluga Financing Documents and the APC Long Term
Financing Documents) thereof from time to time;

         (h)             intercompany Indebtedness owed to the Parent by any
Subsidiary of the Parent and intercompany Indebtedness owed to any Subsidiary
of the Parent by the Parent or any other Subsidiary of the Parent which is
fully subordinated to the Obligations;

         (i)             loans, advances or extensions of credit to the Parent
for the purpose of financing no more than 75% of the purchase price of any
fixed assets which are not included in the property taken into account in
determining the Borrowing Base and which are considered in the categories of
property, plant or equipment according to GAAP applied on a consistent basis;

         (j)             obligations of the Parent under the Gas Sales
Contract, together with any renewals, extensions, amendments, refinancings,
rearrangements, modifications, restatements or supplements, but not increases,
thereof from time to time;

         (k)             obligations of the Parent and Midcon pursuant to the
Contingent Gas Price Payment Agreement (as defined in the Mesa Contract),
together with any renewals, extensions, amendments, refinancings,
rearrangements, modifications, restatements or supplements, but not increases,
thereof from time to time;





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<PAGE>   75
         (l)             the Guarantee by the Parent or any Subsidiary of the
Parent of payment or performance by any Subsidiary of the Parent under any
agreement so long as the obligation guaranteed does not constitute Indebtedness
for borrowed money;

         (m)             obligations of the Parent and Wacker Oil Inc. pursuant
to that certain Agreement Regarding Contingent Payments For Well No. 3 and Well
No. 9 dated as of June 18, 1990, by and among Costain Holdings Inc., Wacker Oil
Inc. and the Parent;

         (n)             obligations of the Parent or any of its Subsidiaries
under gas purchase contracts for gas not taken, as to which the Parent or its
respective Subsidiary is liable to pay if not made up;

         (o)             obligations of the Parent or any of its Subsidiaries
under any contract for sale for future delivery of oil or gas (whether or not
the subject oil or gas is to be delivered), hedging contract, forward contract,
swap agreement, futures contract or other similar agreement;

         (p)             obligations of the Parent or any of its Subsidiaries
under any interest rate swap agreement, or any contract implementing any
interest rate cap, collar or floor, or any similar interest hedging contract;

         (q)             obligations in connection with gas imbalances arising
in the ordinary course of business;

         (r)             Indebtedness not exceeding U.S. $1,000,000 in the
aggregate borrowed from the Amarillo Economic Development Commission and
related Guarantees and related obligations of the Parent and its Subsidiaries;

         (s)             liabilities under leases and lease agreements which do
not cover oil and gas properties to the extent the incurrence and existence of
such liabilities will still enable the Parent and each Subsidiary to comply
with all other requirements of this Agreement and the other Loan Documents to
which they respectively are parties;

         (t)             Subordinated Debt;

         (u)             Funded Indebtedness of any Oil and Gas Subsidiary for
borrowed money payable solely by recourse to properties not included in the
Borrowing Base and Indebtedness incurred by any Gas and Liquids Pipeline
Subsidiary in connection with the construction or acquisition of new assets
(exclusive of any assets with respect to which EBITDA or Projected Cash Flow
[as defined in the U.S. Facility, without amendment except as permitted under
the Intercreditor Agreement] is included in the Pipeline Component Value [as
defined in the U.S. Facility, without amendment except as permitted under the
Intercreditor Agreement] ) in connection with the Pipeline Operations (as
defined in the U.S. Facility, without amendment except as permitted under the
Intercreditor Agreement) which is payable solely by recourse to the assets so





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constructed or acquired, each to the extent not otherwise expressly permitted
by this Section 10.1;

         (v)             the note payable which is to be assumed by the Company
in connection with the consummation of the Novalta Contract and is to be fully
paid and satisfied out of the initial proceeds available under this Agreement
from the making of Loans or the acceptance and purchase of Bankers'
Acceptances; and

         (w)             the U.S. Facility.

         10.2            Liens.  The Parent will not and will not permit any of
its Subsidiaries to create, incur, assume or permit to exist any Lien on any of
its or their properties (now owned or hereafter acquired), except:

         (a)             Liens securing the Indebtedness described in
Subsection 10.1(a) or 10.1(w);

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

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

         (d)             Liens existing on property owned by the Parent or any
of its Subsidiaries on the date of this Agreement which have been disclosed to
the Banks in the Disclosure Statement, together with any renewals, extensions,
amendments, refinancings, rearrangements, modifications, restatements or
supplements, but not increases, thereof from time to time;

         (e)             pledges or deposits made in the ordinary course of
business in connection with worker's compensation, unemployment insurance,
social security and other like laws;

         (f)             inchoate liens arising under ERISA to secure the
contingent liability of the Parent permitted by Section 9.12;

         (g)             Liens in the ordinary course of business, not to
exceed in the aggregate U.S. $2,000,000 as to the Parent and its Subsidiaries
at any time in effect, regarding (i) the performance of bids, tenders,
contracts (other than for the repayment of borrowed money or the deferred
purchase price of property or services) or leases, (ii) statutory obligations,
(iii) surety appeal bonds or (iv) Liens to secure progress or partial payments
made to the  Parent or any of its Subsidiaries and other Liens of like nature;





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         (h)             covenants, restrictions, easements, servitudes,
permits, conditions, exceptions, reservations, minor rights, minor
encumbrances, minor irregularities in title or conventional rights of
reassignment prior to abandonment which do not materially interfere with the
occupation, use and enjoyment by the Parent or any Subsidiary of the Parent of
its respective assets in the normal course of business as presently conducted,
or materially impair the value thereof for the purpose of such business;

         (i)             Liens of operators under joint operating agreements or
similar contractual arrangements with respect to the relevant entity's
proportionate share of the expense of exploration, development and operation of
oil, gas and mineral leasehold or fee interests owned jointly with others, to
the extent that same relate to sums not yet due or which are being contested in
good faith by appropriate action promptly initiated and diligently conducted,
if such reserve as will be required by GAAP will have been made therefor;

         (j)             Liens created pursuant to the creation of trusts or
other arrangements funded solely with cash, cash equivalents or other
marketable investments or securities of the type customarily subject to such
arrangements in customary financial practice with respect to long-term or
medium-term indebtedness for borrowed money, the sole purpose of which is to
make provision for the retirement or defeasance, without prepayment, of
Indebtedness permitted under Section 10.1;

         (k)             Liens on the assets or properties of ENSTAR Alaska;

         (l)             the Vendor Financing Arrangements (as defined in the
Mesa Contract), to the extent that the same shall have been deducted in
calculating the Borrowing Base;

         (m)             purchase money Liens for the acquisition of fixed
assets pursuant to Subsection 10.1(i), so long as such Liens exist solely
against the relevant fixed asset acquired and secure only the purchase money
debt; provided, that the aggregate amount of Indebtedness which is secured by
Liens described in this subsection (other than Indebtedness which is payable
solely by recourse to the applicable property) shall not exceed U.S.
$10,000,000 at any one time outstanding;

         (n)             any Lien existing on any real or personal property of
any corporation or partnership at the time it becomes a Subsidiary of the
Parent or of any other Subsidiary of the Parent, or existing prior to the time
of acquisition upon any real or personal property acquired by the Parent or any
of its Subsidiaries; provided, that such Liens may at all times be deducted in
calculating the Borrowing Base from time to time in effect;

         (o)             legal or equitable encumbrances deemed to exist by
reason of the existence of any litigation or other legal proceeding or arising
out of a judgment or award with respect to which an appeal is being prosecuted
in good faith by appropriate action promptly initiated and diligently
conducted, if such reserve as will be required by GAAP will have been made
therefor;





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<PAGE>   78
         (p)             any Liens securing Indebtedness neither assumed nor
guaranteed by the Parent or any of its Subsidiaries nor on which it customarily
pays interest, existing upon real estate or rights in or relating to real
estate acquired by the Parent or any of its Subsidiaries for substation,
metering station, pump station, storage, gathering line, transmission line,
transportation line, distribution line or right-of-way purposes, and any Liens
reserved in leases for rent and full compliance with the terms of the leases in
the case of leasehold estates, to the extent that any such Lien referred to in
this clause arises in the normal course of business as presently conducted and
does not materially impair the use of the property covered by such Lien for the
purposes for which such property is held by the Parent or its applicable
Subsidiary;

         (q)             rights reserved to or vested in any municipality or
governmental, statutory or public authority by the terms of any right, power,
franchise, grant, license or permit, or by any provision of law, to terminate
such right, power, franchise, grant, license or permit or to purchase, condemn,
expropriate or recapture or to designate a purchaser of any of the property of
the Parent or any of its Subsidiaries;

         (r)             rights reserved to or vested in any municipality or
governmental, statutory or public authority to control or regulate any property
of the Parent or any of its Subsidiaries, or to use such property in a manner
which does not materially impair the use of such property for the purposes for
which it is held by the Parent or its applicable Subsidiary;

         (s)             any obligations or duties affecting the property of
the Parent or any of its Subsidiaries to any municipality, governmental,
statutory or public authority with respect to any franchise, grant, license or
permit;

         (t)             rights of a common owner of any interest in real
estate, rights-of-way or easements held by the Parent or any of its
Subsidiaries and such common owner as tenants in common or through other common
ownership;

         (u)             any Liens arising from the matters described in
Schedule 3.19 of the Mesa Contract;

         (v)             Liens securing Indebtedness permitted under Section
10.1(u) hereof (to the extent such Liens are permitted under such Section
10.1(u));

         (w)             reservations, limitations, provisos and conditions in
any original grant from the Crown or freehold lessor of any of the properties
of the Company or its Subsidiaries;

         (x)             other Liens securing Indebtedness not exceeding, in
the aggregate, U.S. $3,000,000 at any one time outstanding; and





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<PAGE>   79
         (y)             other Liens securing Senior Debt, but only so long as
such Liens shall also secure the Obligations on a pari passu basis, in a manner
and pursuant to documentation acceptable to the Majority Banks.

         10.3            Investments, Loans and Advances.  The Parent will not
and will not permit its Subsidiaries to make or permit to remain outstanding
any advances, loans or other extensions of credit or capital contributions
(other than prepaid expenses in the ordinary course of business) to (by means
of transfers of property or assets or otherwise), or purchase or own any
stocks, bonds, notes, debentures or other securities of, or incur contingent
liability with respect to (except for the endorsement of checks in the ordinary
course of business and except for the Indebtedness and Liens permitted under
this Agreement) any Person (all such transactions being herein called
"Investments"), except that the foregoing restriction will not apply to:

         (a)             Investments (all prior to the date hereof) the
material details of which have been set forth in the Financial Statements
delivered to the Administrative Agent prior to the date hereof or the
Disclosure Statement;

         (b)             Liquid Investments;

         (c)             advances or extensions of credit in the form of
accounts receivable incurred in the ordinary course of business;

         (d)             the acquisition of all of the capital stock of wholly
owned Subsidiaries incorporated or acquired subsequent to the date of this
Agreement;

         (e)             investments where the consideration paid is capital
stock of the Parent, plus cash paid in lieu of issuing fractional shares and
cash paid in settlement of claims of dissenters, such cash not to exceed 10% of
the aggregate purchase price in any such transaction;

         (f)             Investments in any Person which after giving effect
thereto will be a Subsidiary of the Parent, so long as the Investment in such
Person, when consummated, would not result in a breach of the covenants set
forth in Section 10.1;

         (g)             intercompany loans, advances or investments by the
Parent to or in any Subsidiary of the Parent or, to the extent permitted under
Section 10.1(h) hereof, by any Subsidiary of the Parent to or in the Parent or
to or in any other Subsidiary of the Parent, provided, however, that APC may
not make any intercompany loans, advances or investments in any Subsidiary of
the Parent pursuant to this clause (g);

         (h)             intercompany loans, advances or investments by the
Parent, solely from income or cash flow of the Parent subject to the Beluga
Financing Documents, to APC as required under the Beluga Financing Documents
and the APC Long Term Financing Documents;





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         (i)             to the extent, if any, not covered by Subsection (a)
hereinabove, the Indebtedness of the Parent to APC evidenced solely by the
Intercompany Notes, as defined in the Beluga Financing Documents and the APC
Long Term Financing Documents, together with any renewals, extensions,
amendments, refinancings, rearrangements, modifications, restatements or
supplements, but not increases (other than increases which are permitted under
the present terms of the Beluga Financing Documents and the APC Long Term
Financing Documents) thereof from time to time;

         (j)             loans or advances to employees made in the ordinary
course of business, up to the aggregate principal amount at any one time
outstanding of U.S. $500,000;

         (k)             Investments in reasonable amounts of securities for
purposes of funding employee benefit plans maintained by the Parent;

         (l)             advances or extensions of credit made in the ordinary
course of business to third parties under applicable contracts and agreements
in connection with (i) oil, gas or other mineral exploration, development and
production activities or (ii) Hydrocarbon or chemical pipeline gathering or
transportation activities;

         (m)             Investments where the consideration paid is assets of
the Parent or its Subsidiaries other than capital stock, cash or oil and gas
reserves;

         (n)             Investments in EBOC Energy Ltd. made in connection
with and pursuant to the Novalta Contract; and

         (o)             any other Investments which in the aggregate do not
cause the Parent to be in violation of the Investments Tests.

         10.4            Dividend Payment Restrictions.  The Parent will not
declare or make any Dividend Payment other than Dividend Payments which do not
cause the Parent to be in violation of the Dividends Tests and other than
dividends on up to U.S.  $100,000,000 of preferred stock to extent that, in the
reasonable good faith determination of the Parent and the Administrative Agent,
such dividends are not materially in excess of dividends on similar securities
issued in transactions of comparable type and magnitude for issuers similarly
situated to the Parent at the time of issuance of such preferred stock;
provided, however, that, with respect to any particular issue of preferred
stock, the Administrative Agent shall be deemed to have agreed with any
determination of the Parent that the dividends for such issue satisfy the
foregoing requirements if the Administrative Agent shall not have objected to
such determination within 10 days after the Parent has informed the
Administrative Agent of the maximum dividend that could be paid with respect to
such issue.

         10.5            Mergers, Amalgamations and Sales of Assets.  The
Parent will not (a) merge, amalgamate or consolidate with, or sell, assign,
lease or otherwise dispose of, whether in one





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transaction or in a series of transactions, more than ten percent (10%) in the
aggregate of the Parent's and its Subsidiaries' consolidated total assets
(whether now owned or hereafter acquired) to any Person or Persons during the
period since the most recent "Borrowing Base Determination" (as defined in the
U.S. Facility, without amendment except as permitted under the Intercreditor
Agreement), or permit any Subsidiary of the Parent to do so (other than to the
Parent or another Subsidiary of the Parent or the issuance by any Subsidiary of
the Parent of any stock to the Parent or another Subsidiary of the Parent), or
(b) sell, assign, lease or otherwise dispose of, whether in one transaction or
in a series of transactions, any other properties if receiving therefor
consideration other than cash or other consideration readily convertible to
cash or which is less than the fair market value of the relevant properties, or
permit any Subsidiary of the Parent to do so; provided that the Parent or any
Subsidiary of the Parent may merge, amalgamate or consolidate with any other
Person and any Subsidiary of the Parent may transfer properties to any other
Subsidiary of the Parent or to the Parent so long as, in each case, (i)
immediately thereafter and giving effect thereto, no event will occur and be
continuing which constitutes a Default, (ii) in the case of any such merger,
amalgamation or consolidation to which the Parent is a party, the Parent is the
surviving Person, (iii) in the case of any such merger, amalgamation or
consolidation to which any Subsidiary of the Parent is a party (but not the
Parent), such Subsidiary is the surviving Person and (iv) the surviving Person
ratifies each applicable Loan Document and provided further that any Subsidiary
of the Parent may merge or consolidate with any other Subsidiary of the Parent
so long as, in each case (i) immediately thereafter and giving effect thereto,
no event will occur and be continuing which constitutes a Default and (ii) the
surviving Person ratifies each applicable Loan Document.

         10.6            Use of Proceeds.  The Company will not permit the
proceeds of the Loans or the Canadian Bankers' Acceptance Discount Proceeds to
be used for any purpose other than those permitted by this Agreement.

         10.7            ERISA Compliance.  The Parent will not at any time
permit any Plan maintained by it or any Subsidiary of the Parent to:

         (a)             engage in any "prohibited transaction" as such term is
defined in Section 4975 of the Code;

         (b)             incur any "accumulated funding deficiency" as such
term is defined in Section 302 of ERISA; or

         (c)             terminate or be terminated in a manner which could
result in the imposition of a Lien on the property of the Parent or any
Subsidiary of the Parent pursuant to Section 4068 of ERISA,

in each case, to the extent that permitting the Plan to do so would have a
Material Adverse Effect.





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<PAGE>   82
         10.8            Amendment of Certain Documents.  The Parent will not
amend, modify or obtain or grant a waiver of (except for waivers only of
cross-defaults created by a Default under this Agreement), or allow APC to
enter into any amendment or modification or obtain or grant any waiver of
(except for waivers only of cross-defaults created by a Default under this
Agreement), any provision of those documents relating to or constituting the
Beluga Financing Documents or the APC Long Term Financing Documents, without
prior written notification to the Administrative Agent.

         10.9            Tangible Net Worth.  The Parent will not permit the
Tangible Net Worth of the Parent and its Subsidiaries, on a consolidated basis,
at any time to be less than U.S. $225,000,000 plus

                         (i)      50% of net income of the Parent and its
                                  Subsidiaries on a consolidated basis, if
                                  positive, beginning with the fiscal year
                                  ended December 31, 1993 and calculated
                                  annually thereafter based upon positive net
                                  income of the Parent and its Subsidiaries for
                                  each applicable fiscal year taken
                                  cumulatively;

                         plus

                         (ii)     75% of the net cash proceeds of any issuance
                                  of equity in the Parent during the period
                                  referred to in clause (i) above.

         10.10           ENSTAR Alaska Financial Ratios.  The Parent will not
permit the ratio of (A) the sum of Funded Indebtedness of ENSTAR Alaska plus
Current Maturities of ENSTAR Alaska to (B) the sum of Funded Indebtedness of
ENSTAR Alaska plus Current Maturities of ENSTAR Alaska plus the Tangible Net
Worth of ENSTAR Alaska, to be, at any time, more than 60%.  The Parent will not
permit the ratio of (a) the sum of Funded Indebtedness of ENSTAR Alaska plus
Current Maturities of ENSTAR Alaska plus borrowed money Indebtedness of ENSTAR
Alaska that is not Funded Indebtedness to (b) the sum of  Funded Indebtedness
of ENSTAR Alaska plus Current Maturities of ENSTAR Alaska plus borrowed money
Indebtedness of ENSTAR Alaska that is not Funded Indebtedness plus the Tangible
Net Worth of ENSTAR Alaska, to be, at any time, more than 75%.





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<PAGE>   83
         10.11           Parent Debt/Capitalization Ratio.  The Parent will not
permit the Debt/Capitalization Ratio to be, at any time, more than

                         (i)      for the period from and after the date hereof
                                  through December 31, 1993, 75%;

                         (ii)     for the period from and after January 1, 1994
                                  through December 31, 1994, 67.5%;

                         (iii)    for the period from and after January 1, 1995 
                                  through December 31, 1995, 65%; and

                         (iv)     thereafter, 60%.

         10.12           EBITDA/Interest Ratio.  The Parent will not permit the
EBITDA/Interest Ratio to be, at any time, less than

                         (i)      3.25:1.0 for any twelve month period ending
                                  on the last day of any calendar quarter
                                  during the calendar year 1993; and

                         (ii)     3.5:1.0 for any twelve month period ending 
                                  on the last day of any calendar quarter 
                                  thereafter.

         10.13           Nature of Business.  The Parent will not engage in,
and will not permit any Subsidiary of the Parent to engage in, businesses other
than oil and gas exploration and production, gas processing, transmission,
distribution, marketing and storage and gas and liquids pipeline operations and
activities related or ancillary thereto.

         10.14           Futures Contracts.  The Parent will not, and will not
permit any Subsidiary of the Parent to, enter into or be obligated under any
contract for sale for future delivery of oil or gas (whether or not the subject
oil or gas is to be delivered), hedging contract, forward contract, swap
agreement, futures contract or other similar agreement except for (i) such
contracts (x) which fall within the parameters set forth on Exhibit H hereto or
are otherwise approved in writing by the Majority Banks and (y) which in the
aggregate do not cover at any time a volume of oil and/or gas equal to or
greater than 50% of the proved producing reserves attributable to the oil and
gas properties of the Parent and its Subsidiaries, taken as a whole, as
evidenced by the most current Engineering and Parent Reports and (ii)
production sales contracts entered into in the ordinary course of the Parent's
or the applicable Subsidiary's business.

         10.15           Covenants in Other Agreements.  The Parent will not
and will not permit any of its Subsidiaries to become a party to or to agree
that it or any of its property is bound by any agreement, indenture, mortgage,
deed of trust or any other instrument directly or indirectly





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<PAGE>   84
                         (i)      restricting any loans, advances or any other
Investments to or in the Parent by any of its Subsidiaries;

                         (ii)     restricting the ability of any Subsidiary of
the Parent to make tax payments or management fee payments;

                         (iii)    restricting the capitalization structure of
any Subsidiary of the Parent; or

                         (iv)     restricting the ability or capacity of any
Subsidiary of the Parent to make Dividend Payments.

Notwithstanding the foregoing, either of ENSTAR Alaska or APC may become a
party to, or grant a Lien in any of its property by way of, or agree that it
will be bound by, any indenture, mortgage, deed of trust or other instrument
containing provisions of the types described above in this Section 10.15 so
long as the terms and provisions thereof are not materially more restrictive
than the terms or provisions which were legally binding on ENSTAR Alaska or APC
on the date hereof.

         SECTION 11.     DEFAULTS.

         11.1            Events of Default.  If one or more of the following
events (herein called "Events of Default") shall occur and be continuing:

         (a)             Payments - (i) the Company or any other Relevant Party
fails to make any payment or prepayment of any installment of principal on the
Loans or any Reimbursement Obligation payable under the Notes, this Agreement
or the other Loan Documents or the full face amount of any outstanding Bankers'
Acceptances when due or (ii) the Company or any other Relevant Party fails to
make any payment or prepayment of interest with respect to the Loans, any
Reimbursement Obligation or any other fee or amount under the Notes, the
Bankers' Acceptances, this Agreement or the other Loan Documents and such
failure to pay continues unremedied for a period of five (5) Business Days; or

         (b)             Representations and Warranties - any representation or
warranty made by the Company or any other Relevant Party in this Agreement or
in any other Loan Document or in any instrument executed in connection herewith
or therewith proves to have been incorrect in any material respect as of the
date thereof; or any representation, statement (including Financial
Statements), certificate or data furnished or made by the Company or any other
Relevant Party (or any officer of the Company or any other Relevant Party)
under or in connection with this Agreement or any other Loan Document,
including without limitation in the Disclosure Statement, proves to have been
untrue in any material respect, as of the date as of which the facts therein
set forth were stated or certified; or





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<PAGE>   85
         (c)             Affirmative Covenants - (i) default shall be made in
the due observance or performance of any of the covenants or agreements
contained in Sections 9.11 (or in Section 9.6 to the extent such default is
considered an Event of Default under the other Subsections of this Section
11.1) or (ii) default is made in the due observance or performance of any of
the other covenants or agreements contained in Section 9 of this Agreement or
any other affirmative covenant of the Company or any other Relevant Party
contained in this Agreement or any other Loan Document and such default
continues unremedied for a period of 30 days after (x) notice thereof is given
by the Administrative Agent to the Company or (y) such default otherwise
becomes known to the Company, whichever is earlier; or

         (d)             Negative Covenants - (i) default shall be made in the
observance or performance of any of the covenants or agreements contained in
Section 10.8 and such default continues unremedied for a period of five (5)
Business Days after (x) notice thereof is given by the Administrative Agent to
the Company or (y) such default otherwise becomes known to the Parent,
whichever is earlier, or (ii) default is made in the due observance or
performance by the Company or the Parent, as the case may be, of any of the
other covenants or agreements contained in Section 10 of this Agreement or of
any other negative covenant of the Company or any other Relevant Party
contained in this Agreement or any other Loan Document; or

         (e)             Other Obligations - default is made in the due
observance or performance by the Parent or any of its Subsidiaries (as
principal or guarantor or other surety) of any of the covenants or agreements
contained in any bond, debenture, note or other evidence of Indebtedness in
excess of U.S. $3,000,000 (singly or aggregating several such bonds,
debentures, notes or other evidence of Indebtedness) which default gives the
holder the right to accelerate the maturity of such Indebtedness, other than
the Loan Documents, or under any credit agreement, loan agreement, indenture,
promissory note or similar agreement or instrument executed in connection with
any of the foregoing, to which it (respectively) is a party and such default is
unwaived or continues unremedied beyond the expiration of any applicable grace
period which may be expressly allowed under such instrument or agreement; or

         (f)             Involuntary Bankruptcy or Receivership Proceedings - a
receiver, conservator, liquidator or trustee of the Parent or of any of its
property is appointed by the order or decree of any court or agency or
supervisory authority having jurisdiction, and such decree or order remains in
effect for more than 60 days; or the Parent is adjudicated bankrupt or
insolvent; or any of its property is sequestered by court order and such order
remains in effect for more than 60 days; or a petition is filed against the
Parent under any provincial, state or federal bankruptcy, reorganization,
arrangement, insolvency, readjustment of debt, dissolution, liquidation or
receivership law of any jurisdiction, whether now or hereafter in effect, and
is not dismissed within 60 days after such filing; or

         (g)             Voluntary Petitions or Consents - the Parent commences
a voluntary case or other proceeding seeking liquidation, reorganization,
arrangement, insolvency, readjustment of debt, dissolution, liquidation or
other relief with respect to itself or its debt or other liabilities under





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any bankruptcy, insolvency or other similar law now or hereafter in effect or
seeking the appointment of a trustee, receiver, liquidator, custodian or other
similar official of it or any substantial part of its property, or consents to
any such relief or to the appointment of or taking possession by any such
official in an involuntary case or other proceeding commenced against it, or
fails generally to, or cannot, pay its debts generally as they become due or
takes any corporate action to authorize or effect any of the foregoing, or
files a notice of intention to make a proposal under the Bankruptcy Code; or

         (h)             Assignments for Benefit of Creditors or Admissions of
Insolvency - the Parent makes an assignment for the benefit of its creditors,
or admits in writing its inability to pay its debts generally as they become
due, or consents to the appointment of a receiver, trustee, or liquidator of
the Parent or of all or any part of its property; or

         (i)             Undischarged Judgments - judgments (individually or in
the aggregate) for the payment of money in excess of U.S. $10,000,000 is
rendered by any court or other governmental body against the Parent or any  of
its Subsidiaries and the Parent or such Subsidiary does not discharge the same
or provide for its discharge in accordance with its terms, or procure a stay of
execution thereof within 60 days from the date of entry thereof, and within
said period of 60 days from the date of entry thereof or such longer period
during which execution of such judgment will have been stayed, the Parent or
such Subsidiary fails to appeal therefrom and cause the execution thereof to be
stayed during such appeal while providing such reserves therefor as may be
required under GAAP; or

         (j)             Subsidiary Defaults - any Subsidiary of the Parent
takes, suffers, or permits to exist any of the events or conditions referred to
in Subsections 11.1(f), (g) or (h); or

         (k)             Change in Control - there should occur any Change of
Control.

THEREUPON:  the Administrative Agent may (and, if directed by the Majority
Banks, shall) (a) declare the Commitments terminated (whereupon the Commitments
shall be terminated) and/or (b) terminate any Letter of Credit providing for
such termination by sending a notice of termination as provided therein and/or
(c) declare the principal amount then outstanding of and the accrued interest
on the Loans and Reimbursement Obligations and all fees and all other amounts
payable hereunder and under the Notes to be forthwith due and payable and/or
(d) declare the full face amount of all outstanding Bankers' Acceptances to be
forthwith due and payable, whereupon such amounts shall be and become
immediately due and payable, without notice (including without limitation
notice of acceleration and notice of intent to accelerate), presentment,
demand, protest or other formalities of any kind, all of which are hereby
expressly waived by the Company; provided that in the case of the occurrence of
an Event of Default with respect to the Parent referred to in clause (f) or (g)
of this Section 11.1 or in clause (j) of this Section 11.1 to the extent it
refers to clauses (f) or (g), the Commitments shall be automatically terminated
and the principal amount then outstanding of and the accrued interest on the
Loans and Reimbursement Obligations and all fees and all other amounts payable
hereunder and under





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<PAGE>   87
the Notes and the full face amount of all outstanding Bankers' Acceptances
shall be and become automatically and immediately due and payable, without
notice (including but not limited to notice of intent to accelerate and notice
of acceleration) and without presentment, demand, protest or other formalities
of any kind, all of which are hereby expressly waived by the Company and/or (d)
exercise any and all other rights available to it under the Loan Documents, at
law or in equity.

         11.2            Collateral Account.  The Company hereby agrees, in
addition to the provisions of Section 11.1 hereof, that upon the occurrence and
during the continuance of any Event of Default, it shall, if requested by the
Administrative Agent or the Majority Banks (through the Administrative Agent),
pay to the Paying Agent an amount in immediately available funds equal to the
then aggregate amount available for drawings under all Letters of Credit issued
for the account of the Company, which funds shall be held by the Paying Agent
as Cover.

         11.3            Preservation of Security for Unmatured Reimbursement
Obligations.  In the event that, following (i) the occurrence of an Event of
Default and the exercise of any rights available to any Agent under the Loan
Documents, and (ii) payment in full of the principal amount then outstanding of
and the accrued interest on the Loans and Reimbursement Obligations and fees
and all other amounts payable hereunder and under the Notes and under the other
Loan Documents, and (iii) payment in full of the full face amount of all
outstanding Bankers' Acceptances, any Letters of Credit shall remain
outstanding and undrawn upon, the each Agent shall be entitled to hold (and the
Company hereby grants and conveys to each Agent a security interest in and to)
all cash or other property ("Proceeds of Remedies") realized or arising out of
the exercise by such Agent of any rights available to it under the Loan
Documents, at law or in equity, including, without limitation, the proceeds of
any foreclosure, as collateral for the payment of any amounts due or to become
due under or in respect of such Letters of Credit.  Such Proceeds of Remedies
shall be held for the ratable benefit of the applicable Issuers.  Such Proceeds
of Remedies shall constitute collateral for all purposes under the terms and
provisions of the Loan Documents, and the rights, titles, benefits, privileges,
duties and obligations of each applicable Agent with respect thereto shall be
governed by the terms and provisions of this Agreement and, to the extent not
inconsistent with this Agreement, the other Loan Documents.  The applicable
Agent may, but shall have no obligation to, invest any such Proceeds of
Remedies in such manner as such Agent, in the exercise of its sole discretion,
deems appropriate.  Such Proceeds of Remedies shall be applied to Reimbursement
Obligations arising in respect of any such Letters of Credit and/or the payment
of any Issuer's obligations under any such Letter of Credit when such Letter of
Credit is drawn upon.  The Company hereby agrees to execute and deliver to the
Administrative Agent and the Banks such security agreements, pledges or other
documents as the Administrative Agent or any of the Banks may, from time to
time, require to perfect the pledge, lien and security interest in and to any
such Proceeds of Remedies provided for in this Section 11.3.

         11.4            Right of Setoff.  Upon (i) the occurrence and during
the continuance of any Event of Default referred to in clauses (f), (g) or (h)
of Section 11.1, or in clause (j) of Section 11.1





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<PAGE>   88
to the extent it refers to clauses (f), (g) or (h), or upon (ii) the occurrence
and continuance of any other Event of Default and upon the making of the notice
specified in Section 11.1 to authorize the Administrative Agent to declare the
Notes and the full face amount of all Bankers' Acceptances outstanding due and
payable pursuant to the provisions thereof, or if (iii) the Parent or any of
its Subsidiaries becomes insolvent, however evidenced, the Banks are hereby
authorized at any time and from time to time, without notice to the Parent or
any of its Subsidiaries (any such notice being expressly waived by the Parent
and its Subsidiaries), to setoff and apply any and all deposits (general or
special, time or demand, provisional or final, whether or not such setoff
results in any loss of interest or other penalty, and including without
limitation all certificates of deposit) at any time held, and any other funds
or property at any time held, and other Indebtedness at any time owing by any
Bank to or for the credit or the account of the Company against any and all of
the Obligations irrespective of whether or not such Bank will have made any
demand under this Agreement, any Bankers' Acceptances or the Notes and although
such obligations may be unmatured.  Should the right of any Bank to realize
funds in any manner set forth hereinabove be challenged and any application of
such funds be reversed, whether by court order or otherwise, the Banks shall
make restitution or refund to the Company pro rata in accordance with their
Commitments.  The Banks agree promptly to notify the Company and the
Administrative Agent and the Paying Agent after any such setoff and
application, provided that the failure to give such notice will not affect the
validity of such setoff and application.  The rights of the Agents and the
Banks under this Section are in addition to other rights and remedies
(including without limitation other rights of setoff) which the Agents or the
Banks may have.

         SECTION 12.     THE AGENTS.

         12.1            Appointment, Powers and Immunities.  Each Bank hereby
irrevocably appoints and authorizes the Administrative Agent to act as arranger
and administrative agent hereunder and under the Letters of Credit and the
other Loan Documents with such powers as are specifically delegated to the
Administrative Agent by the terms hereof and thereof, together with such other
powers as are reasonably incidental thereto.  Each Bank hereby irrevocably
appoints and authorizes the Paying Agent to act as co-agent and paying agent
hereunder and under the Bankers' Acceptances, the Letters of Credit and the
other Loan Documents with such powers as are specifically delegated to the
Paying Agent by the terms hereof and thereof, together with such other powers
as are reasonably incidental thereto.  Each Bank hereby irrevocably appoints
and authorizes the Co-Agent to act as co-agent hereunder and under the Letters
of Credit and the other Loan Documents with such powers as are specifically
delegated to the Co- Agent by the terms hereof and thereof, together with such
other powers as are reasonably incidental thereto.  None of the Agents (which
term as used in this Section 12 shall include reference to their affiliates and
their own and their affiliates' officers, directors, employees and agents) (a)
shall have any duties or responsibilities except those expressly set forth in
this Agreement, the Bankers' Acceptances, the Letters of Credit, and the other
Loan Documents, or shall by reason of this Agreement or any other Loan Document
be a trustee or fiduciary for any Bank; (b) shall be responsible to any Bank
for any recitals, statements, representations or warranties contained





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in this Agreement, the Bankers' Acceptances, the Letters of Credit or any other
Loan Document, or in any certificate or other document referred to or provided
for in, or received by any of them under, this Agreement, the Bankers'
Acceptances, the Letters of Credit or any other Loan Document, or for the
value, validity, effectiveness, genuineness, enforceability or sufficiency of
this Agreement, the Bankers' Acceptances, the Letters of Credit, or any other
Loan Document or any other document referred to or provided for herein or
therein or any property covered thereby or for any failure by any Relevant
Party or any other Person to perform any of its obligations hereunder or
thereunder; (c) shall be required to initiate or conduct any litigation or
collection proceedings hereunder or under the Bankers' Acceptances, the Letters
of Credit or any other Loan Document except to the extent requested by the
Majority Banks, and (d) shall be responsible for any action taken or omitted to
be taken by them hereunder or under the Bankers' Acceptances, the Letters of
Credit or any other Loan Document or any other document or instrument referred
to or provided for herein or therein or in connection herewith or therewith,
including, without limitation, pursuant to their own negligence, except for
their own gross negligence or wilful misconduct.  The Agents may employ agents
and attorneys-in-fact and shall not be responsible for the negligence or
misconduct of any such agents or attorneys-in-fact selected by them with
reasonable care.  Without in any way limiting any of the foregoing, each Bank
acknowledges that neither any Agent nor any Issuer shall have any greater
responsibility in the operation of the Letters of Credit than is specified in
the Uniform Customs and Practice for Documentary Credits (1983 Revision,
International Chamber of Commerce Publication No. 400).  In any foreclosure
proceeding concerning any collateral for the Obligations, each holder of an
Obligation if bidding for its own account or for its own account and the
accounts of other Banks is prohibited from including in the amount of its bid
an amount to be applied as a credit against its Obligation or Obligations or
the Obligations of the other Banks; instead, such holder must bid in cash only;
provided that this provision is for the sole benefit of the Agents and the
Banks and shall not inure to the benefit of the Parent or any of its
Subsidiaries.  However, in any such foreclosure proceeding, the Administrative
Agent may (but shall not be obligated to) submit a bid for all Banks (including
itself) in the form of a credit against the Notes of all of the Banks, and the
Administrative Agent or its designee may (but shall not be obligated to) accept
title to such collateral for and on behalf of all Banks.

         12.2            Reliance by Agents.  Each of the Agents shall be
entitled to rely upon any certification, notice or other communication
(including any thereof by telephone, telex, telegram or cable) believed by them
to be genuine and correct and to have been signed or sent by or on behalf of
the proper Person or Persons, and upon advice and statements of legal counsel
(which may be counsel for the Company and/or the Parent and/or any Subsidiary
of the Parent), independent accountants and other experts selected by any
Agent.  As to any matters not expressly provided for by this Agreement, the
Bankers' Acceptances, the Letters of Credit, or any other Loan Document, the
Agents shall in all cases be fully protected in acting, or in refraining from
acting, hereunder and thereunder in accordance with instructions of the
Majority Banks (or, where unanimous consent is required by the terms hereof or
of the other Loan Documents, all of the Banks), and any action taken or failure
to act pursuant thereto shall be binding on all of the Banks.  Pursuant to
instructions of the Majority Banks (except as otherwise





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provided in Section 13.4 hereof), the Administrative Agent shall have the
authority to execute releases of any Liens created by the Loan Documents on
behalf of the Banks without the joinder of any Bank.

         12.3            Defaults.  The Agents shall not be deemed to have
knowledge of the occurrence of a Default unless they have received notice from
a Bank or the Company specifying such Default and stating that such notice is a
"Notice of Default"; provided, however, that the Paying Agent shall be deemed
to have knowledge of the non-payment of principal of or interest on Loans or
the full face amount of outstanding Bankers' Acceptances or Reimbursement
Obligations at the time of such non-payment.  In the event that the
Administrative Agent receives such a notice of the occurrence of a Default, the
Administrative Agent shall give prompt notice thereof to the Banks.  The Paying
Agent shall give each Bank prompt notice to the Banks of each non-payment of
principal of or interest on Loans, the full face amount of outstanding Bankers'
Acceptances or Reimbursement Obligations.  The Administrative Agent shall
(subject to Section 12.7 hereof) take such action with respect to such Default
as shall be directed by the Majority Banks and within its rights under the Loan
Documents and at law or in equity, provided that, unless and until the
Administrative Agent shall have received such directions, the Administrative
Agent may (but shall not be obligated to) take such action, or refrain from
taking such action, permitted hereby with respect to such Default as it shall
deem advisable in the best interests of the Banks and within its rights under
the Loan Documents, at law or in equity.

         12.4            Rights as a Bank.  With respect to their Commitments
and the Loans made, Bankers' Acceptances accepted and purchased and Letter of
Credit Liabilities, the Agents in their capacities as Banks hereunder shall
have the same rights and powers hereunder as any other Bank and may exercise
the same as though they were not acting as Agents, and the term "Bank" or
"Banks" shall, unless the context otherwise indicates, include the Agents in
their individual capacities.  The Agents may (without having to account
therefor to any Bank) accept deposits from, lend money to and generally engage
in any kind of banking, trust, letter of credit, agency or other business with
the Parent or its Subsidiaries (and any of their Affiliates) as if they were
not acting as Agents, and the Agents may accept fees and other consideration
from the Parent or its Subsidiaries (and any of their Affiliates), in addition
to the fees heretofore agreed to between the Company and the Agents, for
services in connection with this Agreement or otherwise without having to
account for the same to the Banks.

         12.5            Indemnification.  The Banks agree to indemnify the
Agents (to the extent not reimbursed under Section 2.2(c), Section 9.7 or
Section 13.3 hereof, but without limiting the obligations of the Company under
said Sections 2.2(c), 9.7 and 13.3), ratably in accordance with their
respective Commitments, for any and all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind and nature whatsoever (including but not limited to, the
consequences of the negligence of the Agents) which may be imposed on, incurred
by or asserted against the Agents in any way relating to or arising out of this
Agreement, the Bankers' Acceptances, the Letters of Credit or any other Loan
Document or any other documents contemplated by or referred to herein or
therein or the transactions





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contemplated hereby or thereby (including, without limitation, the costs and
expenses which the Company is obligated to pay under Sections 2.2(c), 9.8 and
13.3 hereof but excluding, unless a Default has occurred and is continuing,
normal administrative costs and expenses incident to the performance of their
agency duties hereunder) or the enforcement of any of the terms hereof or
thereof or of any such other documents, including but not limited to the
negligence of the Agents, provided that no Bank shall be liable for any of the
foregoing to the extent they arise from the gross negligence or wilful
misconduct of the party to be indemnified.  The obligations of the Banks under
this Section 12.5 shall survive the termination of this Agreement and the
repayment of the Obligations.

         12.6            Non-Reliance on Agents and Other Banks.  Each Bank
agrees that it has received current financial information with respect to the
Parent and its Subsidiaries and that it has, independently and without reliance
on the Agents or any other Bank and based on such documents and information as
it has deemed appropriate, made its own credit analysis of the Parent and its
Subsidiaries and decision to enter into this Agreement and that it will,
independently and without reliance upon the Agents or any other Bank, and based
on such documents and information as it shall deem appropriate at the time,
continue to make its own analysis and decisions in taking or not taking action
under this Agreement or any of the other Loan Documents.  The Agents shall not
be required to keep themselves informed as to the performance or observance by
any Relevant Party of this Agreement, the Bankers' Acceptances, the Letters of
Credit or any of the other Loan Documents or any other document referred to or
provided for herein or therein or to inspect the properties or books of the
Parent or its Subsidiaries.  Except for notices, reports and other documents
and information expressly required to be furnished to the Banks by the Agents
hereunder, under the Bankers' Acceptances, under the Letters of Credit or the
other Loan Documents, the Agents shall not have any duty or responsibility to
provide any Bank with any credit or other information concerning the affairs,
financial condition or business of the Parent or its Subsidiaries (or any of
their Affiliates) which may come into the possession of the Agents.

         12.7            Failure to Act.  Except for action expressly required
of the Agents hereunder, under the Bankers' Acceptances, under the Letters of
Credit and under the other Loan Documents, the Agents shall in all cases be
fully justified in failing or refusing to act hereunder and thereunder unless
they shall receive further assurances to their satisfaction by the Banks of
their indemnification obligations under Section 12.5 hereof against any and all
liability and expense which may be incurred by them by reason of taking or
continuing to take any such action.

         12.8            Resignation or Removal of Agents.  Subject to the
appointment and acceptance of a successor Agent as provided below, any Agent
may resign at any time by giving notice thereof to the Banks and the Company,
and any Agent may be removed at any time with or without cause by the Majority
Banks.  Upon any such resignation or removal, the Majority Banks shall have the
right to appoint a successor Agent, provided deposits with such successor Agent
shall be insured by the Canada Deposit Insurance Corporation or its successor.
If no





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successor Agent shall have been so appointed by the Majority Banks and shall
have accepted such appointment within 30 days after the retiring Agent's giving
of notice of resignation or the Majority Banks' removal of the retiring Agent,
then the retiring Agent may, on behalf of the Banks, appoint a successor Agent.
Any successor Agent shall be a bank which has an office in Canada and a
combined capital and surplus of at least U.S. $250,000,000.  Upon the
acceptance of any appointment as Agent hereunder by a successor Agent, such
successor Agent shall thereupon succeed to and become vested with all the
rights, powers, privileges and duties of the retiring Agent, and the retiring
Agent shall be discharged from its duties and obligations hereunder.  Any
successor Paying Agent shall promptly specify by notice to the Company its
Payment Office referred to in Sections 3.1 and 5.1.  After any retiring Agent's
resignation or removal hereunder as Agent, the provisions of this Section 12
shall continue in effect for its benefit in respect of any actions taken or
omitted to be taken by it while it was acting as the Agent.

         SECTION 13.     MISCELLANEOUS.

         13.1            Waiver.  No waiver of any Default shall be a waiver of
any other Default.  No failure on the part of any Agent or any Bank to exercise
and no delay in exercising, and no course of dealing with respect to, any
right, power or privilege under any Loan Document shall operate as a waiver
thereof, nor shall any single or partial exercise of any right, power or
privilege thereunder preclude any other or further exercise thereof or the
exercise of any other right, power or privilege.  The remedies provided in the
Loan Documents are cumulative and not exclusive of any remedies provided by law
or in equity.

         13.2            Notices.  All notices and other communications
provided for herein (including, without limitation, any modifications of, or
waivers or consents under, this Agreement) shall be given or made by telex,
telegraph, telecopy (confirmed by mail), cable, mail or other writing and
telexed, telecopied, telegraphed, cabled, mailed or delivered to the intended
recipient at the "Address for Notices" specified below its name on the
signature pages hereof; or, as to any party, at such other address as shall be
designated by such party in a notice to the Company and the Administrative
Agent given in accordance with this Section 13.2.  Except as otherwise provided
in this Agreement, all such communications shall be deemed to have been duly
received when transmitted by telex or telecopier during regular business hours,
delivered to the telegraph or cable office or personally delivered or, in the
case of a mailed notice, three (3) days after deposit in the Canadian mails,
postage prepaid, registered mail with return receipt requested (or upon actual
receipt, if earlier), in each case given or addressed as aforesaid.

         13.3            Indemnification.  The Company shall indemnify the
Agents, the Banks, and each Affiliate thereof and their respective directors,
officers, employees and agents from, and hold each of them harmless against,
any and all losses, liabilities, claims or damages to which any of them may
become subject (except as provided in clause (c) of this Section 13.3,
regardless of whether caused in whole or in part by the simple (but not gross)
negligence of the Person indemnified), insofar as such losses, liabilities,
claims or damages arise out of or result from any





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(i) actual or proposed use by the Company of the proceeds of any extension of
credit (whether a Loan, Bankers' Acceptance or a Letter of Credit) by any Bank
hereunder, (ii) breach by the Company or any other Relevant Party of this
Agreement or any other Loan Document, (iii) violation by the Parent or any of
its Subsidiaries of any Legal Requirement, including but not limited to those
relating to Hazardous Substances, (iv) Liens or security interests previously
or hereafter granted on any real or personal property, to the extent resulting
from any Hazardous Substance located in, on or under any such property, (v)
ownership by the Banks or the Agents of any real or personal property following
foreclosure, to the extent such losses, liabilities, claims or damages arise
out of or result from any Hazardous Substance located in, on or under such
property, including, without limitation, losses, liabilities, claims or damages
which are imposed upon Persons under laws relating to or regulating Hazardous
Substances solely by virtue of ownership, (vi) Banks' or Agents' being deemed
an operator of any such real or personal property by a court or other
regulatory or administrative agency or tribunal in circumstances in which
neither any of the Agents nor any of the Banks is generally operating or
generally exercising control over such property, to the extent such losses,
liabilities, claims or damages arise out of or result from any Hazardous
Substance located in, on or under such property, (vii) investigation,
litigation or other proceeding (including any threatened investigation or
proceeding) relating to any of the foregoing, and the Company shall reimburse
each Agent, each Bank, and each Affiliate thereof and their respective
directors, officers, employees and agents, upon demand, for any expenses
(including legal fees) incurred in connection with any such investigation or
proceeding or (viii) taxes (excluding income taxes and franchise taxes) payable
or ruled payable by any Governmental Authority in respect of the principal and
interest of the Loans, the Bankers' Acceptances or any other Loan Document,
together with interest and penalties, if any; provided, however, that the
Company shall not have any obligations pursuant to this Section 13.3 with
respect to any losses, liabilities, claims, damages or expenses (a) arising
from or relating solely to events, conditions or circumstances which, as to
clauses (iv), (v) or (vi) above, first came into existence or which first
occurred after the date on which the Parent or any of its Subsidiaries conveyed
to an unrelated third party all of the Parent's or the applicable Subsidiary's
rights, titles and interests to the applicable real or personal property
(whether by deed, deed-in-lieu, foreclosure or otherwise) other than a
conveyance made in violation of any Loan Document, (b) incurred by the Person
seeking indemnification by reason of the gross negligence or wilful misconduct
of such Person, (c) in the case of liability arising with respect to Bankers'
Acceptances, incurred by the Person seeking indemnification by reason of the
negligence or wilful misconduct of such Person or (d) resulting from
withholding tax liability incurred in connection with payments made by the
Company to any Agent, any Bank or any Affiliate thereof.  If the Company ever
disputes a good faith claim for indemnification under this Section 13.3 on the
basis of the proviso set forth in the preceding sentence, the full amount of
indemnification provided for shall nonetheless be paid, subject to later
adjustment or reimbursement at such time (if any) as a court of competent
jurisdiction enters a final judgment as to the applicability of any such
exceptions.

         13.4            Amendments, Etc.  No amendment or waiver of any
provision of this Agreement, the Notes or any other Loan Document, nor any
consent to any departure by the Company or





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any other Relevant Party therefrom, shall in any event be effective unless the
same shall be agreed or consented to by the Majority Banks and the Company, and
each such waiver or consent shall be effective only in the specific instance
and for the specific purpose for which given; provided, that no amendment,
waiver or consent shall, unless in writing and signed by each Bank affected
thereby, do any of the following:  (a) increase the Commitment of such Bank (it
being understood that the waiver of any reduction in the Commitments or any
mandatory repayment other than (x) the repayment of all Loans at the end of the
Revolving Credit Availability Period and (y) the mandatory reductions of the
Commitments provided for in Section 2.3(a) and (z) the mandatory prepayments
required by the terms of Section 3.2(b), shall not be deemed to be an increase
in any Commitment) or subject the Banks to any additional obligation; (b)
reduce the principal of, or interest on, any Loan, Reimbursement Obligation or
fee hereunder or the face amount of any outstanding Bankers' Acceptances; (c)
postpone any scheduled date fixed for any payment or mandatory prepayment of
principal of, or interest on, any Loan, Reimbursement Obligation, fee or the
face amount of any outstanding Bankers' Acceptances or other sum to be paid
hereunder; (d) change the percentage of any of the Commitments or of the
aggregate unpaid principal amount of any of the Loans or the face amount of any
outstanding Bankers' Acceptances and Letter of Credit Liabilities, or the
number of Banks, which shall be required for the Banks or any of them to take
any action under this Agreement; (e) change any provision contained in Sections
2.2(c), 9.7 or 13.3 hereof or this Section 13.4 or Section 6.7 hereof, or (f)
release all or substantially all of any security for the obligations of the
Company under this Agreement or any Note or all or substantially all of the
personal liability of any obligor created under any of the Loan Documents.
Anything in this Section 13.4 to the contrary, no amendment, waiver or consent
shall be made with respect to Section 12 without the consent of the applicable
Agent or Agents affected thereby.

         13.5            Successors and Assigns.  (a) This Agreement shall be
binding upon and inure to the benefit of the Company, the Agents and the Banks
and their respective successors and assigns.  The Company may not assign or
transfer any of its rights or obligations hereunder without the prior written
consent of all of the Banks.  Each Bank may sell participations to any Person
which is a resident of Canada under the Income Tax Act (Canada) in all or part
of any Loan, Bankers' Acceptance or Letter of Credit, or all or part of its
Notes or Commitments, in which event, without limiting the foregoing, the
provisions of Section 6 shall inure to the benefit of each purchaser of a
participation and the pro rata treatment of payments, as described in Section
5.2, shall be determined as if such Bank had not sold such participation.  In
the event any Bank shall sell any participation, such Bank shall retain the
sole right and responsibility to enforce the obligations of the Company or any
other Relevant Party relating to the Loans, Bankers' Acceptances or Letters of
Credit, including, without limitation, the right to approve any amendment,
modification or waiver of any provision of this Agreement other than
amendments, modifications or waivers with respect to (i) any fees payable
hereunder to the Banks and (ii) the amount of principal or the rate of interest
payable on, or the dates fixed for the scheduled repayment of principal of, the
Loans.





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         (b)             Each Bank may assign to one or more Banks or any other
Person, in each case which is a resident of Canada under the Income Tax Act
(Canada), all or a portion of its interests, rights and obligations under this
Agreement, provided, however, that (i) other than in the case of an assignment
to another Bank that is, at the time of such assignment, a party hereto or an
Affiliate of such Bank which is a resident of Canada under the Income Tax Act
(Canada), the Company must give its prior written consent, which consent will
not be unreasonably withheld, (ii) the aggregate amount of the Commitment
and/or Loans, the face amount of all outstanding Bankers' Acceptances or
Letters of Credit of the assigning Bank subject to each such assignment
(determined as of the date the Assignment and Acceptance (as defined below)
with respect to such assignment is delivered to the Administrative Agent) shall
in no event be less than U.S. $10,000,000 (or U.S. $5,000,000 in the case of an
assignment to an Affiliate of a Bank or between Banks), (iii) no assignment
shall have the effect of reducing the pro rata share of the Loans, the face
amount of all outstanding Bankers' Acceptances or Letters of Credit and the
Commitments held by the assignor and its Affiliates below U.S.  $10,000,000,
(iv) notwithstanding any other term or provision of this Agreement, unless the
Company shall have otherwise consented in writing (such consent not to be
unreasonably withheld), each such assignment shall be pro rata with respect to
the Loans, the Bankers' Acceptances, the Letters of Credit and the Commitment
of the assignor, and (v) the parties to each such assignment shall execute and
deliver to the Administrative Agent, for its acceptance and recording in the
Register (as defined below), an Assignment and Acceptance in the form of
Exhibit F hereto (each an "Assignment and Acceptance") with blanks
appropriately completed, together with any Note or Notes subject to such
assignment and a processing and recordation fee of U.S. $2,500 paid by the
assignee (for which the Company shall have no liability).  Upon such execution,
delivery, acceptance and recording, from and after the effective date specified
in each Assignment and Acceptance, which effective date shall be at least five
Business Days after the execution thereof, (A) the assignee thereunder shall be
a party hereto and, to the extent provided in such Assignment and Acceptance,
have the rights and obligations of a Bank hereunder and (B) the Bank thereunder
shall, to the extent provided in such Assignment and Acceptance, be released
from its obligations under this Agreement.

         (c)             By executing and delivering an Assignment and
Acceptance, the Bank assignor thereunder and the assignee thereunder confirm to
and agree with each other and the other parties hereto as follows:  (i) other
than the representation and warranty that it is the legal and beneficial owner
of the interest being assigned thereby free and clear of any adverse claim,
such Bank assignor makes no representation or warranty and assumes no
responsibility with respect to any statements, warranties or representations
made in or in connection with this Agreement or any of the other Loan Documents
or the execution, legality, validity, enforceability, genuineness, sufficiency
or value of this Agreement or any of the other Loan Documents or any other
instrument or document furnished pursuant thereto; (ii) such Bank assignor
makes no representation or warranty and assumes no responsibility with respect
to the financial condition of the Parent or any of its Subsidiaries or the
performance or observance by the Company or any other Relevant Party of any of
its obligations under this Agreement or any of the other Loan Documents or any
other instrument or document furnished pursuant hereto; (iii) such assignee





                                       89
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confirms that it has received a copy of this Agreement, together with copies of
the financial statements referred to in Section 8.6 and such other documents
and information as it has deemed appropriate to make its own credit analysis
and decision to enter into such Assignment and Acceptance; (iv) such assignee
will, independently and without reliance upon any Agent, such Bank assignor or
any other Bank and based on such documents and information as it shall deem
appropriate at the time, continue to make its own credit decisions in taking or
not taking action under this Agreement and the other Loan Documents; (v) such
assignee appoints and authorizes the Agents to take such action as agent on its
behalf and to exercise such powers under this Agreement and the other Loan
Documents as are delegated to the Agents by the terms hereof, together with
such powers as are reasonably incidental thereto; and (vi) such assignee agrees
that it will perform in accordance with their terms all obligations that by the
terms of this Agreement and the other Loan Documents are required to be
performed by it as a Bank.

         (d)             The Administrative Agent shall maintain at its office
a copy of each Assignment and Acceptance delivered to it and a register for the
recordation of the names and addresses of the Banks and the Commitments of, and
principal amount of the Loans owing to, and the face amount of all Bankers'
Acceptances accepted and purchased by, each Bank from time to time (the
"Register").  The entries in the Register shall be conclusive, in the absence
of manifest error, and the Company, the Agents and the Banks may treat each
person the name of which is recorded in the Register as a Bank hereunder for
all purposes of this Agreement and the other Loan Documents.  The Register
shall be available for inspection by the Company or any Bank at any reasonable
time and from time to time upon reasonable prior notice.

         (e)             Upon its receipt of an Assignment and Acceptance
executed by an assigning Bank and the assignee thereunder together with any
Note or Notes subject to such assignment, the written consent to such
assignment executed by the Company and the fee payable in respect thereto, the
Administrative Agent shall, if such Assignment and Acceptance has been
completed with blanks appropriately filled, (i) accept such Assignment and
Acceptance, (ii) record the information contained therein in the Register and
(iii) give prompt notice thereof to the Company.  Within five Business Days
after receipt of notice, the Company, at its own expense, shall execute and
deliver to the Administrative Agent in exchange for the surrendered Notes new
Notes to the order of such assignee in an amount equal to the Commitments
and/or Loans or the face amount of outstanding Bankers' Acceptances or Letters
of Credit assumed by it pursuant to such Assignment and Acceptance and, if the
assigning Bank has retained Commitments and/or Loans hereunder, new Notes to
the order of the assigning Bank in an amount equal to the Commitment and/or
Loans retained by it hereunder.  Such new Notes shall be in an aggregate
principal amount equal to the aggregate principal amount of such surrendered
Notes, shall be dated the effective date of such Assignment and Acceptance and
shall otherwise be in substantially the form of the respective Note.
Thereafter, such surrendered Notes shall be marked renewed and substituted and
the originals delivered to the Company (with copies, certified by the Company
as true, correct and complete, to be retained by the Administrative Agent).





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         (f)             Any Bank may, in connection with any assignment or
participation or proposed assignment or participation pursuant to this Section
13.5, disclose to the assignee or participant or proposed assignee or
participant, any information relating to the Parent or its Subsidiaries
furnished to such Bank by or on behalf of the Parent or its Subsidiaries;
provided, however, that, prior to any such disclosure, the Parent shall have
consented thereto, which consent shall not be unreasonably withheld, and each
such assignee or participant, or proposed assignee or participant, shall
execute an agreement whereby such assignee or participant shall agree to
preserve the confidentiality of any Confidential Information (defined in
Section 13.12) on terms substantially the same as those provided in Section
13.12.

         (g)  The Company will have the right to consent to any material
intercreditor arrangements in connection with an assignment by any Bank of any
interest, right or obligation under this Agreement which is not pro rata with
respect to the Loans, or the face amount of outstanding Bankers' Acceptances,
the Letters of Credit and the Commitment of the assignor and the Company may
deny its consent to any such arrangements which, in the reasonable judgement of
the Company, would adversely affect the Company in a material respect.

         13.6            Limitation of Interest.  The Company and the Banks
intend to strictly comply with all applicable laws, including applicable usury
laws.  Accordingly, the provisions of this Section 13.6 shall govern and
control over every other provision of this Agreement or any other Loan Document
which conflicts or is inconsistent with this Section, even if such provision
declares that it controls.  As used in this Section, 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 Obligations.  In no event shall the Company or any other Person be
obligated to pay, or any Bank 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 Province of Alberta or the applicable
laws (if any) of Canada or of any other applicable jurisdiction, or (b) total
interest in excess of the amount which such Bank could lawfully have contracted
for, reserved, received, retained or charged had the interest been calculated
for the full term of the Obligations 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 Loan 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





                                       91
<PAGE>   98
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 Loan Document which directly or indirectly relate to interest shall
ever be construed without reference to this Section 13.6, 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
Obligation 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 Bank at any time,
including but not limited to, the stated maturity, is owed or receives (and/or
has 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 Bank, it shall be credited pro tanto against the then-outstanding
principal balance of the Company's obligations to such Bank, 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.

         13.7            Interest Act (Canada); Interest Generally.  For the
purposes of this Agreement, the Notes and the other Loan Documents, whenever
interest or fees to be paid hereunder are to be calculated on the basis of a
year of 365 or 360 days, the yearly rate of interest to which the rate
determined pursuant to such calculation is equivalent is the rate so determined
multiplied by the actual number of days in the 12 month period commencing on
the first day of the period for which such calculation is made and divided by
365 or 360, as applicable.  The theory of deemed reinvestment shall not apply
to the calculation of interest or payment of fees or other amounts hereunder or
under the Notes or under the other Loan Documents, notwithstanding anything
contained in this Agreement or in the Notes or in the other Loan Documents, or
in any other instrument referred to herein or in the Notes or in the other Loan
Documents, and all interest and fees payable by the Borrower to the Lender
shall accrue from day to day and be computed as described herein or in the
Notes or in the other Loan Documents in accordance with the "nominal rate"
method of interest calculation.  To the extent permitted by law, any provision
of the Judgment Interest Act (Alberta) and the Interest Act (Canada) which
restricts the rate of interest on any judgment debt shall be inapplicable to
this Agreement and is hereby waived by the Borrower.

         13.8            Certain Saskatchewan Legislation.  The Land Contracts
(Actions) Act of the Province of Saskatchewan shall have no application to any
action, as defined in the said Land Contracts (Actions) Act, with respect to
this Agreement; and the Limitation of Civil Rights Act in the Province of
Saskatchewan shall have no application to this Agreement.  The Company agrees
that the provisions of both the Land Contracts (Actions) Act and the Limitation
of Civil Rights Act are hereby waived.





                                       92
<PAGE>   99
         13.9            Survival.  The obligations of the Company under
Sections 2.2(c), 6, 9.7 and 13.3 hereof and the obligations of the Banks under
Section 13.6 hereof shall survive the repayment of the Loans and Reimbursement
Obligations and the termination of the Commitments and the Letters of Credit.

         13.10           Captions.  Captions and section headings appearing
herein are included solely for convenience of reference and are not intended to
affect the interpretation of any provision of this Agreement.

         13.11           Counterparts.  This Agreement may be executed in any
number of counterparts, all of which taken together shall constitute one and
the same agreement and any of the parties hereto may execute this Agreement by
signing any such counterpart.

         13.12           Governing Law.  This Agreement and the Notes and the
Bankers' Acceptances and (except as therein provided) the other Loan Documents
are performable in Calgary, Alberta, Canada, which shall be a proper place of
venue for suit on or in respect thereof.  The Company irrevocably agrees that
any legal proceeding in respect of this Agreement or the other Loan Documents
shall be brought in the courts of the Province of Alberta and the courts of
appeal therefrom (collectively, the "Specified Courts").  The Company hereby
irrevocably submits to the nonexclusive jurisdiction of such courts.  The
Company hereby irrevocably waives, to the fullest extent permitted by law, any
objection which it may now or hereafter have to the laying of venue of any
suit, action or proceeding arising out of or relating to any Loan Document
brought in any Specified Court, and hereby further irrevocably waives any
claims that any such suit, action or proceeding brought in any such court has
been brought in an inconvenient forum.  The Company further (1) agrees to
designate and maintain an agent for service of process in Calgary, Alberta,
Canada in connection with any such suit, action or proceeding and to deliver to
the Administrative Agent evidence thereof and (2) irrevocably consents to the
service of process out of any of the aforementioned courts in any such suit,
action or proceeding by the mailing of copies thereof by registered mail,
return receipt requested, postage prepaid, to the Company at its address as
provided in this Agreement or as otherwise provided by governing law.  Nothing
herein shall affect the right of any Agent or any Bank to commence legal
proceedings or otherwise proceed against the Company in any jurisdiction or to
serve process in any manner permitted by applicable law.  The Company agrees
that a final judgment in any such action or proceeding shall be conclusive and
may be enforced in other jurisdictions by suit on the judgment or in any other
manner provided by law.  THIS AGREEMENT AND (EXCEPT AS THEREIN PROVIDED) THE
OTHER LOAN DOCUMENTS SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
APPLICABLE LAWS (OTHER THAN THE CONFLICT OF LAWS RULES) OF THE PROVINCE OF
ALBERTA AND OF CANADA FROM TIME TO TIME IN EFFECT.

         13.13           Severability.  Whenever possible, each provision of
the Loan Documents shall be interpreted in such manner as to be effective and
valid under applicable law.  If any provision of any Loan Document shall be
invalid, illegal or unenforceable in any respect under any





                                       93
<PAGE>   100
applicable law, the validity, legality and enforceability of the remaining
provisions of such Loan Document shall not be affected or impaired thereby.

         13.14           Confidential Information.  Each Agent and each Bank
separately agrees that:

         (a)             As used herein, the term "Confidential Information"
means written information about the Parent or its Subsidiaries or the
transactions contemplated herein furnished by the Parent or its Subsidiaries to
the Agents and/or the Banks which is specifically designated as confidential by
the Parent; Confidential Information, however, shall not include information
which (i) was publicly known or available, or otherwise available on a
non-confidential basis to any Bank, at the time of disclosure from a source
other than the Parent or its Subsidiaries, (ii) subsequently becomes publicly
known through no act or omission by such Bank, (iii) otherwise becomes
available on a non-confidential basis to any Bank other than through disclosure
by the Parent or its Subsidiaries or (iv) has been in the possession of any
Bank for a period of more than two years from the date on which such
information originally was furnished to such Bank by the Parent or its
Subsidiaries, unless the Parent shall have requested the Agents and the Banks
in writing, at least 30 days prior to the end of such two-year period, to
maintain the confidentiality of such information for another two (2) year
period (or for successive two (2) year periods); provided that the Parent shall
not unreasonably withhold its consent to a request made after the initial two
(2) year period to eliminate information from "Confidential Information".

         (b)             Each Agent and each Bank agrees that it will take
normal and reasonable precautions to maintain the confidentiality of any
Confidential Information furnished to such Person; provided, however, that such
Person may disclose Confidential Information (i) upon the Parent's consent;
(ii) to its auditors; (iii) when required by any Legal Requirement; (iv) as may
be required or appropriate in any report, statement or testimony submitted to
any Governmental Authority having or claiming to have jurisdiction over it; (v)
to such Person's and its Subsidiaries' or Affiliates' officers, directors,
employees, agents, representatives and professional consultants in connection
with this Agreement or administration of the Loans and Letters of Credit; (vi)
as may be required or appropriate, should such Bank elect to assign or grant
participations in any of the Obligations in connection with (1) the enforcement
of the Obligations to any such Person under any of the Loan Documents or
related agreements, or (2) any potential transfer pursuant to this Agreement of
any Obligation owned by any Bank (provided any potential transferee has been
approved by the Company if required by this Agreement, which approval shall not
be unreasonably withheld, and has agreed in writing to be bound by
substantially the same provisions regarding Confidential Information contained
in this Section); (vii) as may be required or appropriate in response to any
summons or subpoena or in connection with any litigation or administrative
proceeding; (viii) to any other Bank; (ix) to the extent reasonably required in
connection with the exercise of any remedy hereunder or under the other Loan
Documents; or (x) to correct any false or misleading information which may
become public concerning such Person's relationship to the Parent or its
Subsidiaries.





                                       94
<PAGE>   101
         13.15           Intercreditor Agreement.  Reference is hereby made to
the Intercreditor Agreement, which provides for certain matters relating to
both the Obligations and the Canadian Facility.  To the extent of any conflict
between the terms hereof and the terms of the Intercreditor Agreement, the
Intercreditor Agreement shall control.  The Administrative Agent is hereby
authorized and directed to execute and deliver the Intercreditor Agreement in
the form attached hereto as Exhibit I on behalf of the Banks.  Any Bank that
becomes a party to this Agreement after the date hereof agrees to be bound by
the terms and provisions of the Intercreditor Agreement.

         13.16           Judgement Currency.  Notwithstanding that this
Agreement is governed by the laws of the Province of Alberta, Canada, monies
outstanding in connection herewith may be stipulated in terms of lawful money
of the United States of America (which stipulation or expression is of the
essence) and payments to be made in regard thereto pursuant to this Agreement,
or otherwise, are and are intended to be payable in lawful money of the United
States of America; and to the extent permitted by law any judgment in respect
of any such monies outstanding as aforesaid or any obligation pertaining
thereto arising under this Agreement may be obtained or enforced either in
lawful money of the United States of America or the equivalent in lawful money
of Canada, as the Administrative Agent may elect, and the Administrative Agent
shall to the extent permitted by law be entitled to such election and the
benefit (if any) from the consequent conversion of currency at the date of
payment or enforcement of the judgment.  Any such payment obligation stipulated
or expressed in lawful money of the United States of America shall not be
discharged by an amount paid in lawful money of Canada, whether pursuant to a
judgment or otherwise, to the extent that the amount so paid on prompt
conversion into lawful money of the United States of America does not, after
deduction of any and all premiums and/or costs of exchange paid or payable by
the Administrative Agent in connection with such conversion, yield the required
amount of payment expressed in terms of lawful money of the United States of
America.  In the event that any payment in lawful money of Canada in respect of
a payment in lawful money of Canada in respect of a payment obligation
stipulated or expressed in terms of lawful money of the United States of
America as aforesaid, whether pursuant to a judgment or otherwise, upon
conversion as aforesaid does not, after deduction of any and all premiums
and/or costs of exchange paid or payable by any Agent or any Bank in connection
with such conversion, yield the required amount expressed in terms of lawful
money of the United States of America, the Administrative Agent shall, on
behalf of and for the benefit of the affected Person, have a separate cause of
action for the additional amount required to yield the required amount
expressed in terms of lawful money of the United States of America.

         13.17           Withholding Tax Remittances.  If any withholding for,
or on account of, any present or future tax, duty or charge of whatsoever
nature is imposed or levied by or on behalf of any taxing jurisdiction or
authority (together with any interest and penalties thereon and additions
thereto) in respect of any payments to be made pursuant to this Agreement or
the Notes, the Company shall be entitled to withhold and remit such payment to
the applicable taxing authority whereupon such payment, for the purposes of
this Agreement and the Notes,





                                       95
<PAGE>   102
shall be deemed to have been made as required hereunder or under the Notes,
notwithstanding anything contained elsewhere in this Agreement or in the Notes.

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

                                        SEAGULL ENERGY CANADA LTD.


                                        By: ____________________________________
                                                    Robert M. King,
                                                    Vice President

                                        Address for Notices:

                                        1001 Fannin, Suite 1700
                                        Houston, Texas  77002
                                        Attention:  Robert M. King

                                        with a copy to:

                                        2900 Western Canadian Place
                                        707 8th Avenue S.W.
                                        Calgary, Alberta  T2P 2M7
                                        Attention:  Mr. Lorne Martin





                                       96
<PAGE>   103
                                        CHEMICAL BANK OF CANADA, as Arranger,
                                        as Administrative Agent and as a Bank


                                        By: ____________________________________
                                        Name: __________________________________
Commitment:                             Title: _________________________________

U.S. $15,000,000
                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                        Address for Notices:

                                        100 Yonge Street, Suite 90
                                        Toronto, Ontario CANADA M5C 2W1
                                        Attention:  Mr. David McGorman

                                        with a copy to:

                                        Texas Commerce Bank National
                                        Association 712 Main Street
                                        Houston, Texas  77002
                                        Attention:  Manager, Energy Division





                                       97
<PAGE>   104
                                        THE BANK OF NOVA SCOTIA, as Paying
                                        Agent, as Co-Agent and as a Bank


                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $40,000,000

                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________



                                        Address for Notices:

                                        International Banking Division-Loan
                                        Accounting 
                                        14th Floor 
                                        44 King Street West 
                                        Toronto, Ontario CANADA M5H 1H1 
                                        Attention: Assistant Manager

                                        with a copies to:

                                        The Bank of Nova Scotia
                                        Corporate Banking Calgary
                                        Suite #3820, 700-2nd Street S.W.
                                        Calgary, Alberta CANADA  T2P 2N7 
                                        Attention: Vice President

                                        and to:

                                        The Bank of Nova Scotia
                                        Suite 3000, 1100 Louisiana
                                        Houston, Texas  77002
                                        Attention:  Mr. Mark A. Ammerman





                                       98
<PAGE>   105
                                        CANADIAN IMPERIAL BANK OF COMMERCE, as
                                        Co-Agent and as a Bank


                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $40,000,000
                                        Address for Notices:

                                        Oil and Gas Group
                                        10th Floor, 855 2nd Street, S.W.
                                        Calgary, Alberta CANADA  T2P 2P2 
                                        Attention: Director

                                        with a copy to:

                                        Canadian Imperial Bank of Commerce 
                                        Two Houston Center, Suite 1200
                                        909 Fannin Street 
                                        Houston, Texas 77010 
                                        Attention: Brian R. Swinford, 
                                                   Vice President





                                       99
<PAGE>   106
                                        ABN AMRO BANK CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $15,000,000

                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                        Address for Notices:

                                        2500-650 West Georgia Street
                                        Vancouver, British Columbia
                                            CANADA  V6B 4N8
                                        Attention: Mr. Andre Nel

                                        with a copy to:

                                        ABN AMRO Bank N.V., Houston Agency
                                        Three Riverway, Suite 1600
                                        Houston, Texas  77056
                                        Attention: Ms. Cheryl Lipshutz, 
                                                   Vice President





                                      100
<PAGE>   107
                                        PARIBAS BANK OF CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $15,000,000

                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                        Address for Notices:

                                        Toronto-Dominion Centre
                                        Royal Trust Tower
                                        Suite 4100
                                        Toronto, Ontario CANADA M5K 1N8
                                        Attention: Mr. Francois LaPlace

                                        with a copy to:

                                        Banque Paribas, Houston Agency
                                        1200 Smith, Suite 3100
                                        Houston, Texas  77002
                                        Attention:  Barton D. Schouest, 
                                                    Group Vice President





                                      101
<PAGE>   108
                                        BANK OF BOSTON CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $10,000,000
                                        Address for Notices:

                                        Attention: _____________________________

                                        with a copy to:

                                        First National Bank of Boston
                                        100 Federal Street
                                        Energy & Utilities 01-15-04
                                        Boston, Massachusetts  02110
                                        Attention:  George W. Passela, 
                                                    Managing Director





                                      102
<PAGE>   109
                                        NBD BANK, CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $10,000,000
                                        Address for Notices:

                                        BCE Place
                                        161 Bay Street
                                        P.O. Box 613
                                        Toronto, Ontario CANADA M5J 2S1
                                        Attention: Mr. Raymond W. Wise

                                        with a copy to:

                                        NBD Bank, N.A.
                                        611 Woodward Avenue
                                        Detroit, Michigan 48226
                                        Attention: Mr. Douglas R. Liftman,
                                                   Second Vice President





                                      103
<PAGE>   110
                                        SOCIETE GENERALE (CANADA)



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $10,000,000
                                        Address for Notices:

                                        Scotia Plaza
                                        100 Yonge Street, Suite 1002
                                        Toronto, Ontario CANADA  M5C 2W1
                                        Attention: Mr. Bert Coish

                                        with a copy to:

                                        Societe Generale, Southwest Agency 
                                        1111 Bagby, Suite 2020 
                                        Houston, Texas 77002 
                                        Attention:  Mr. Richard Erbert,
                                                    Vice President





                                      104
<PAGE>   111
                                        THE BANK OF TOKYO CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $10,000,000
                                        Address for Notices:

                                        Park Place, 666 Burrard Street
                                        Suite 2410
                                        Vancouver, British Columbia CANADA 
                                           V6C 3L1
                                        Attention: Mr. Ivan Hopkins


                                        with a copy to:

                                        The Bank of Tokyo, Ltd., Dallas Agency
                                        909 Fannin, Suite 1104 
                                        Two Houston Center 
                                        Houston, Texas 77010 
                                        Attention:  Mr. John M. McIntyre,
                                                    Vice President





                                      105
<PAGE>   112
                                        CREDIT LYONNAIS CANADA



                                        By: ____________________________________
Commitment:                             Name: __________________________________
                                        Title: _________________________________
U.S. $10,000,000
                                        Address for Notices:

                                        Bow Valley Square One
                                        6th Avenue S.W., Suite 1670
                                        Calgary, Alberta CANADA  T2P 2R9
                                        Attention: Mr. Robert K. McCutcheon

                                        with a copy to:

                                        Credit Lyonnais New York Branch 
                                        c/o Credit Lyonnais Houston 
                                        1000 Louisiana, Suite 5360
                                        Houston, Texas  77002
                                        Attention: Mr. David Dodd






                                      106

<PAGE>   1
                                                                   Exhibit 2.5

                                PROMISSORY NOTE
                                 (U.S. Dollars)


U.S. $_______________                                     _____________, 199_



                         FOR VALUE RECEIVED, SEAGULL ENERGY CANADA LTD. (the
"Borrower"), a corporation organized under the laws of the Province of Alberta,
Canada, hereby promises to pay to _______________________________________ (the
"Bank"), or order, at the principal office of The Bank of Nova Scotia,
International Banking Division-Loan Accounting, 14th Floor, 44 King Street
West, Toronto, Ontario, Canada M5H 1H1, Attention: Assistant Manager, the
principal sum of ______________ UNITED STATES DOLLARS (U.S. $_______________) 
(or such lesser amount as shall equal the outstanding principal balance 
hereof), in lawful money of the United States of America and in immediately 
available funds, on the dates and in the principal amounts provided in the 
Credit Agreement referred to below, and to pay interest on the unpaid 
principal amount of each Loan denominated in U.S. Dollars made by the Bank 
to the Borrower under the Credit Agreement, at such office, in like money 
and funds, for the period commencing on the date of such Loan until such 
Loan shall be paid in full, at the rates per annum and on the dates provided 
in the Credit Agreement.

                         In addition to and cumulative of any payment required
to be made against this Note pursuant to the Credit Agreement, this Note,
including all principal then unpaid and accrued interest then unpaid, shall be
due and payable on December 31, 1999, its final maturity.  All payments shall
be applied first to principal and the balance to accrued interest, except as
otherwise expressly provided in the Credit Agreement.

                         




                                                      SIGNED FOR IDENTIFICATION:

                                                      SEAGULL ENERGY CANADA LTD.


                                                      By: ______________________
                                                      Name: ____________________
                                                      Title: ___________________


                                  EXHIBIT C-1
                                       to
                                Credit Agreement

                                     Page 1
<PAGE>   2
                         This Note is one of the Notes referred to in the Credit
Agreement (as restated, amended, modified and supplemented and in effect from 
time to time, the "Credit Agreement") dated as of December 30, 1993, among the 
Borrower, certain signatory banks named therein, Chemical Bank of Canada, as 
Arranger and as Administrative Agent, The Bank of Nova Scotia, as Paying Agent 
and as Co-Agent, and Canadian Imperial Bank of Commerce, as Co-Agent, and 
evidences the Loans denominated in U.S. Dollars made by the Bank thereunder.  
This Note shall be governed by the Credit Agreement. Capitalized terms used in 
this Note and not defined in this Note, but which are defined in the Credit 
Agreement, have the respective meanings herein as are assigned to them in the 
Credit Agreement.

                         The Bank is hereby authorized by the Borrower to
endorse on Schedule A (or a continuation thereof) attached to this Note, the
amount and date of each Loan denominated in U.S. Dollars made by the Bank to
the Borrower under the Credit Agreement, and the amount and date of each
payment or prepayment of principal of such Loan received by the Bank, provided
that any failure by the Bank to make any such endorsement shall not affect the
obligations of the Borrower under the Credit Agreement or under this Note in
respect of such Loans.

                         Except only for any notices which are specifically
required by the Credit Agreement or the other Loan Documents, the Borrower and
any and all co-makers, endorsers, guarantors and sureties severally waive
notice (including, but not limited to, notice of intent to accelerate and
notice of acceleration, notice of protest and notice of dishonor), demand,
presentment for payment, protest, diligence in collecting and the filing of
suit for the purpose of fixing liability and consent that the time of payment
hereof may be extended and re-extended from time to time without notice to any
of them.  Each such person agrees that his, her or its liability on or with
respect to this Note shall not be affected by any release of or change in any
guaranty or security at any time existing or by any failure to perfect or
maintain perfection of any lien against or security interest in any such
security or the partial or complete enforceability of any guaranty





                                                      SIGNED FOR IDENTIFICATION:

                                                      SEAGULL ENERGY CANADA LTD.


                                                      By: ______________________
                                                      Name: ____________________
                                                      Title: ___________________


                                  EXHIBIT C-1
                                       to
                                Credit Agreement

                                     Page 2
<PAGE>   3
or other surety obligation, in each case in whole or in part, with or
without notice and before or after maturity.           
                                                                       
        The Credit Agreement provides for the acceleration of the maturity
of this Note upon the occurrence of certain events and for prepayment
of Loans upon the terms and conditions specified therein.             
                                
        THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE PROVINCE OF ALBERTA, CANADA AND OF CANADA FROM TIME TO TIME IN
EFFECT.                                                      
             
                                 SEAGULL ENERGY CANADA LTD. 
                                                            
                                                            
                                 By: ______________________ 
                                 Name: ____________________ 
                                 Title: ___________________ 
                                                            
                                                            
                                             
                                             
                                                                  
                   EXHIBIT C-1                                    
                        to                                        
                 Credit Agreement                                 
                                                                  
                      Page 3                                      
                                                                  
<PAGE>   4
                                   SCHEDULE A



This Note evidences Loans denominated in U.S. Dollars made by the Bank under
the within-described Credit Agreement to the Borrower, in the principal amounts
set forth below, which Loans are of the Type and for the Interest Periods and
were made on the dates set forth below, subject to the payments of principal
set forth below:

<TABLE>
<CAPTION>

                                              Interest
                   Principal                   Period/         Date of       Amount      Balance
        Date       Amount of                  Maturity        Payment or     Paid or       Out-
        Made         Loan         Type          Date          Prepayment     Prepaid     standing
        ----       ---------      ----        --------        ----------     -------     --------
<S>                <C>            <C>         <C>             <C>            <C>         <C>

</TABLE>    


                                  EXHIBIT C-1
                                       to
                                Credit Agreement

                                     Page 4


<PAGE>   1

                                                                    Exhibit 2.6

                                PROMISSORY NOTE                
                               (Canadian Dollars)


Canadian $_______________                                     __________, 199__



                         FOR VALUE RECEIVED, SEAGULL ENERGY CANADA LTD. (the
"Borrower"), a corporation organized under the laws of the Province of Alberta,
Canada, hereby promises to pay to _______________________________________ (the
"Bank"), or order, at the principal office of The Bank of Nova Scotia,
International Banking Division-Loan Accounting, 14th Floor, 44 King Street
West, Toronto, Ontario, Canada M5H 1H1, Attention: Assistant Manager, the
principal sum of ______________  CANADIAN DOLLARS (Canadian $_______________) 
(or such lesser amount as shall equal the outstanding principal balance 
hereof), in lawful money of Canada and in immediately available funds, on the 
dates and in the principal amounts provided in the Credit Agreement referred 
to below, and to pay interest on the unpaid principal amount of each Loan 
denominated in Canadian Dollars made by the Bank to the Borrower under the 
Credit Agreement, at such office, in like money and funds, for the period 
commencing on the date of such Loan until such Loan shall be paid in full, 
at the rates per annum and on the dates provided in the Credit Agreement.

                         In addition to and cumulative of any payment required
to be made against this Note pursuant to the Credit Agreement, this Note,
including all principal then unpaid and accrued interest then unpaid, shall be
due and payable on December 31, 1999, its final maturity.  All payments shall
be applied first to principal and the balance to accrued interest, except as
otherwise expressly provided in the Credit Agreement.

                         

                                        SIGNED FOR IDENTIFICATION:

                                        SEAGULL ENERGY CANADA LTD.


                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                  EXHIBIT C-2
                                       to
                                Credit Agreement

                                     Page 1
<PAGE>   2
        This Note is one of the Notes referred to in the Credit  Agreement (as
restated, amended, modified and supplemented and in effect from  time to time,
the "Credit Agreement") dated as of December 30, 1993, among the  Borrower,
certain signatory banks named therein, Chemical Bank of Canada, as  Arranger
and as Administrative Agent, The Bank of Nova Scotia, as Paying Agent  and as
Co-Agent, and Canadian Imperial Bank of Commerce, as Co-Agent, and  evidences
the Loans denominated in Canadian Dollars made by the Bank thereunder.   This
Note shall be governed by the Credit Agreement.  Capitalized terms used in 
this Note and not defined in this Note, but which are defined in the Credit 
Agreement, have the respective meanings herein as are assigned to them in the 
Credit Agreement.

                         The Bank is hereby authorized by the Borrower to
endorse on Schedule A (or a continuation thereof) attached to this Note, the
amount and date of each Loan denominated in Canadian Dollars made by the Bank
to the Borrower under the Credit Agreement, and the amount and date of each
payment or prepayment of principal of such Loan received by the Bank, provided
that any failure by the Bank to make any such endorsement shall not affect the
obligations of the Borrower under the Credit Agreement or under this Note in
respect of such Loans.

                         Except only for any notices which are specifically
required by the Credit Agreement or the other Loan Documents, the Borrower and
any and all co-makers, endorsers, guarantors and sureties severally waive
notice (including, but not limited to, notice of intent to accelerate and
notice of acceleration, notice of protest and notice of dishonor), demand,
presentment for payment, protest, diligence in collecting and the filing of
suit for the purpose of fixing liability and consent that the time of payment
hereof may be extended and re-extended from time to time without notice to any
of them.  Each such person agrees that his, her or its liability on or with
respect to this Note shall not be affected by any release of or change in any
guaranty or security at any time existing or by any failure to perfect or
maintain perfection of any lien against or security interest in any such
security or the partial or complete enforceability of any guaranty





                                        SIGNED FOR IDENTIFICATION:

                                        SEAGULL ENERGY CANADA LTD.


                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________


                                  EXHIBIT C-2
                                       to
                                Credit Agreement

                                     Page 2
<PAGE>   3
or other surety obligation, in each case in whole or in part, with or without
notice and before or after maturity.

                         The Credit Agreement provides for the acceleration of
the maturity of this Note upon the occurrence of certain events and for
prepayment of Loans upon the terms and conditions specified therein.

                         THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE PROVINCE OF ALBERTA, CANADA AND OF CANADA FROM
TIME TO TIME IN EFFECT.

                                        SEAGULL ENERGY CANADA LTD.


                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________





                                  EXHIBIT C-2
                                       to
                                Credit Agreement

                                     Page 3
<PAGE>   4
                                   SCHEDULE A



This Note evidences Loans denominated in Canadian Dollars made by the Bank
under the within-described Credit Agreement to the Borrower, in the principal
amounts set forth below, which Loans are of the Type and for the Interest
Periods and were made on the dates set forth below, subject to the payments of
principal set forth below:


<TABLE>

<CAPTION> 
                                         Interest
                  Principal               Period/        Date of         Amount     Balance    
      Date        Amount of              Maturity       Payment or       Paid or      Out-
      Made          Loan        Type       Date         Prepayment       Prepaid    standing
     -----        --------      ----     --------       ----------       -------    --------            
   <S>          <C>            <C>       <C>             <C>             <C>        <C> 
     
</TABLE>                                  
                                  
                                  EXHIBIT C-2
                                       to
                                Credit Agreement

                                     Page 4

<PAGE>   1
                                                               Exhibit 2.7





                            INTERCREDITOR AGREEMENT

                 THIS INTERCREDITOR AGREEMENT dated as of December 30, 1993 is
made by and among (i) the banks and other financial institutions (the "Canadian
Lenders") which are or may from time to time become parties to the Canadian
Credit Agreement (as hereinafter defined), by Chemical Bank of Canada, as their
administrative agent (the "Canadian Agent"); (ii) the banks and other financial
institutions (the "U.S. Lenders") which are or may from time to time become
parties to the U.S. Credit Agreement (as hereinafter defined), by Texas
Commerce Bank National Association, as their agent (the "U.S. Agent"); (iii)
Seagull Energy Canada Ltd., as borrower under the Canadian Credit Agreement
(the "Canadian Borrower"); and (iv) Seagull Energy Corporation, as borrower
under the U.S. Credit Agreement (the "U.S. Borrower") and guarantor of the
obligations of the Canadian Borrower (in such capacity, the "Guarantor").

RECITALS:

         The Canadian Lenders and the U.S. Lenders have agreed that they shall
rank pari passu with one another in respect of certain payments or recoveries
and that certain matters related to the administration of the Canadian Credit
Agreement or the U.S.  Credit Agreement (together, the "Credit Agreements")
shall be made on the basis of their Combined Commitments (hereinafter defined).

         In order to achieve the pari passu sharing described above, it may be
necessary for the Canadian Lenders or the U.S.  Lenders to purchase from each
other participations in the Loans and Letter of Credit Obligations issued
pursuant to the other Credit Agreement.

THE PARTIES HERETO AGREE AS FOLLOWS:

SECTION 1:       DEFINITIONS AND INTERPRETATION

1.1      CERTAIN DEFINITIONS

         When used herein, terms and expressions defined in the U.S. Credit
Agreement shall have those meanings unless they are also defined in a different
manner in the Canadian Credit Agreement (other than any difference arising
solely from conforming changes, such as the substitution of "Parent" for
"Company"), in which case the respective definitions set forth in the
respective Credit Agreements shall apply as required by the context; terms and
expressions defined in the Canadian Credit Agreement which are not defined in
the U.S. Credit Agreement shall have those meanings; and the following
additional terms and expressions shall have the meanings respectively set forth
below (such definitions to be equally applicable in the singular and plural):

                                    1

<PAGE>   2
         "ACCELERATION" means either (i) the maturity of the Loans under a
Credit Agreement by reason of its stated maturity date or (ii) the acceleration
(after the occurrence of Event of Default) of the due date for payment of the
principal amount then outstanding of and accrued interest on the Loans under a
Credit Agreement automatically or by reason of a declaration or demand;

         "ADMINISTRATIVE AGENT" means, in respect of the Canadian Credit
Agreement, Chemical and, in respect of the U.S. Credit Agreement, TCB;

         "AGREEMENT" means this Intercreditor Agreement, as the same may be
amended, modified, restated or supplemented from time to time;

         "BORROWER" means the Canadian Borrower or the U.S. Borrower;

         "CANADIAN CREDIT AGREEMENT" means the credit agreement dated as of
December 30, 1993 by and among the Canadian Borrower, the Banks signatory
thereto, Chemical as arranger and administrative agent, The Bank of Nova Scotia
as paying agent and co-agent and Canadian Imperial Bank of Commerce as
co-agent;

         "CANADIAN CREDIT OUTSTANDINGS" of a Canadian Lender as at any date of
determination thereof means the Equivalent U.S.  Dollar Amount of the aggregate
principal amount of Loans outstanding from such Lender under the Canadian
Credit Agreement plus the Equivalent U.S. Dollar Amount of such Lender's
Commitment Percentage (under the Canadian Credit Agreement) of the amount
available for drawing under Letters of Credit issued thereunder plus the
Equivalent U.S. Dollar Amount of such Lender's Commitment Percentage (under the
Canadian Credit Agreement) of any other liabilities, obligations or
indebtedness of the applicable Borrower or any other Relevant Party under the
Loan Documents (as defined in the Canadian Credit Agreement);

         "CHEMICAL" means Chemical Bank of Canada, a Schedule II bank under the
Bank Act (Canada), with an office in Toronto, Ontario;

         "COLLATERAL" means any and all property, security or other interests,
present or future, tangible or intangible, now or hereafter securing the
obligations of the Borrower under the Credit Agreement to which it is a party;

         "COMBINED COMMITMENTS" means, at any time, the aggregate of the
Commitments of the Canadian Lenders and the U.S. Lenders under both Credit
Agreements at such time;

         "COMBINED MAJORITY LENDERS" at any time means Lenders having greater
than 66-2/3% of the aggregate amount of the Combined Commitments at such time;

         "COMBINED OUTSTANDINGS" means the aggregate of all Canadian Credit
Outstandings and





                                       2
<PAGE>   3
all U.S. Credit Outstandings;

         "COMBINED REQUESTING LENDERS" at any time means Lenders having greater
than 50% of the aggregate amount of the Combined Commitments at such time;

         "COMBINED SUPER MAJORITY LENDERS" at any time means Lenders having 75%
or greater of the aggregate amount of the Combined Commitments at such time;

         "CREDIT AGREEMENTS" means the Canadian Credit Agreement and the U.S.
Credit Agreement;

         "DEFAULT" means any event or circumstance which, after notice or lapse
of time or a relevant determination being made (or any combination thereof),
would constitute an Event of Default under a Credit Agreement;

         "ENFORCING LENDER" has the meaning ascribed thereto in Section 2.7;

         "EVENT OF DEFAULT" means an Event of Default under (and as defined in)
either Credit Agreement;

         "GOVERNMENTAL AUTHORITY" as to Canadian Lenders shall have the meaning
ascribed thereto in the Canadian Credit Agreement and to U.S. Lenders shall
have the meaning ascribed thereto in the U.S. Credit Agreement;

         "LENDERS" means the Canadian Lenders and the U.S. Lenders;

         "OPERATIVE SHARING PERCENTAGES" means the Sharing Percentages of the
U.S. Lenders and the Canadian Lenders determined as of the applicable Reference
Date.  The Operative Sharing Percentages of the Lenders shall be recalculated
as of each January 1, April 1, June 1 and September 1 using the Combined
Outstandings as of the applicable Reference Date but using the then current
Equivalent U.S. Dollar Amount with respect to any of such Combined Outstandings
denominated in Canadian Dollars;

         "POST DEFAULT PROPORTION" means, at any time:

         a.      for the U.S. Lenders, a percentage determined by dividing:

                 i.       the aggregate of the U.S. Credit Outstandings at such
                          time plus any amounts paid by the applicable Lender
                          pursuant toSection 3.3.c. and plus any amounts
                          distributed by the applicable Lender to the Canadian
                          Lenders as holders of participation interests in the
                          U.S. Credit Outstandings to such time and less any
                          amounts received by the applicable Lender pursuant to
                          Section 3.3.c. and less any amounts received by the
                          applicable





                                       3
<PAGE>   4
                          Lender from the Canadian Lenders by virtue of the
                          applicable U.S. Lender's holding risk sharing 
                          interests in the Canadian Credit Outstandings to such 
                          time, by

                 ii.      the Combined Outstandings at such time;

         b.      for the Canadian Lenders, a percentage obtained by dividing:

                 i.       the aggregate of the Canadian Credit Outstandings at
                          such time plus any amounts paid by the applicable
                          Lender pursuant toSection 3.3.c. and plus any amounts
                          distributed by the applicable Lender to the U.S.
                          Lenders as holders of risk sharing interests in the
                          Canadian Credit Outstandings to such time andless any
                          amounts received by the applicable Lender pursuant to
                          Section 3.3.c. and less any amounts received by the
                          applicable Lender from the U.S. Lenders by virtue of
                          the applicable Canadian Lender's holding
                          participation interests in the U.S. Credit
                          Outstandings to such time, by

                 ii.      the Combined Outstandings at such time;

         "REALLOCABLE PAYMENT" means any amount received by a Lender, after the
applicable Reference Date, in respect of a Credit Agreement by virtue of any
payment or prepayment (other than amounts received as Cover or otherwise in the
nature of collateral under either of the Credit Agreement) made by or for the
account of a Borrower (including for greater certainty any payment made under a
Guaranty of such Borrower's obligations and all amounts realized from the
exercise of any foreclosure or similar rights in respect of any collateral,
together with all proceeds of insurance in respect of the Collateral which are
received by a Lender and which such Lender applies to reduce any Combined
Outstandings) or by virtue of an exercise of any right of set-off, combination,
zero-balancing or similar mechanisms;

         "REFERENCE DATE" means the first to occur of (i) the date on which any
Acceleration has occurred or (ii) the date on which any Event of Default
arising under Section 11.1(a) of either of the Credit Agreements has occurred.

         "SHARING PERCENTAGE" means, at any time:

         a.      for the U.S. Lenders, the percentage determined by dividing
                 the U.S. Credit Outstandings by the Combined Outstandings at
                 such time; and

         b.      for the Canadian Lenders, the percentage determined by
                 dividing the Canadian Outstandings by the Combined
                 Outstandings at such time;

         "TCB" means Texas Commerce Bank National Association, a national
banking





                                       4
<PAGE>   5
association;

         "U.S. CREDIT AGREEMENT" means the amended and restated credit
agreement dated as of June 25, 1993 by and among the U.S.  Borrower, the Banks
signatory thereto and TCB as agent, as amended by amending agreement dated
December 30, 1993; and

         "U.S. CREDIT OUTSTANDINGS" of a U.S. Lender as at any date of
determination thereof means the aggregate principal amount of Loans outstanding
from such Lender under the U.S. Credit Agreement plus such Lender's Commitment
Percentage (as defined under the U.S. Credit Agreement) of amounts available
for drawing pursuant to Letters of Credit issued thereunder plus such Lender's
Commitment Percentage (under the U.S. Credit Agreement) of any other
liabilities, obligations or indebtedness of the applicable Borrower or any
other Relevant Party under the Loan Documents (as defined in the U.S. Credit
Agreement).

1.2      HEADINGS AND AGREEMENT REFERENCES

         a.      The division of this Agreement into Sections, the inclusion of
                 a table of contents and the insertion of headings is for
                 convenience of reference only and shall not affect the
                 construction or interpretation of this Agreement.

         b.      The term "this Agreement", "hereof", "hereunder" and similar
                 expressions refer to this Agreement and not to any particular
                 Article, Section or other portion hereof and include any
                 amendments or supplements hereto.  Unless otherwise stated,
                 references herein to "Sections" are to Sections of this
                 Agreement.

SECTION 2:       CO-OPERATIVE ADMINISTRATION

2.1      COMBINED VOTING

         Notwithstanding anything to the contrary provided in the Canadian
Credit Agreement or the U.S. Credit Agreement:

         a.      no decision, determination, instruction, action, consent,
                 waiver or amendment under Sections 2.9 or 3.2(b) of the U.S.
                 Credit Agreement, with respect to the Borrowing Base or any
                 component of the Borrowing Base or under Sections 9, 10 or 11
                 of the Canadian Credit Agreement or the U.S. Credit Agreement
                 which, by the terms of the applicable Credit Agreement,
                 requires approval, agreement or consent by or from the
                 "Majority Banks" (as such expression is used in the respective
                 Credit Agreement), and no amendment of such requirement for
                 such approval, agreement or consent by or from such "Majority
                 Banks", shall be made, taken, implemented, given or effective
                 unless the same shall have been approved, agreed or consented
                 to by the Combined Majority Lenders;





                                       5
<PAGE>   6
         b.      no decision, determination, instruction, action, consent,
                 waiver or amendment under the U.S. Credit Agreement which, by
                 the terms of such Credit Agreement, requires approval,
                 agreement or consent by or from the "Requesting Banks" (as
                 such expression is used in the U.S. Credit Agreement) shall be
                 made, taken, implemented, given or effective unless the same
                 shall have been approved, agreed or consented to by the
                 Combined Requesting Lenders;

         c.      no decision, determination, instruction, action, consent,
                 waiver or amendment under the U.S. Credit Agreement which, by
                 the terms of such Credit Agreement, requires approval,
                 agreement or consent by or from the "Super Majority Banks" (as
                 such expression is used in the U.S. Credit Agreement) shall be
                 made, taken, implemented, given or effective unless the same
                 shall have been approved, agreed or consented to by the
                 Combined Super Majority Lenders.

2.2      GOOD FAITH DETERMINATIONS

         Each Lender shall, in giving consideration to any request for any
approval, agreement or consent under a Credit Agreement referred to in Section
2.1 above, act in good faith with a view to the effect of this Agreement;
provided, however that such obligation is intended to run to the benefit of the
respective Lenders and not, except to the extent such obligation is imposed by
applicable laws, to the benefit of any Borrower or any Relevant Party under
either Credit Agreement.

2.3      NOTICES AND COMMUNICATIONS (GENERAL)

         The Administrative Agents shall without request, to the extent not
delivered by the relevant Borrower, promptly provide to each other, for
distribution to the Lenders under the applicable Credit Agreement, copies of
any material notices or other communications from the Canadian Borrower or the
U.S. Borrower and material information received or determinations made by them
and, in particular, any designation by the Canadian Borrower of the Maximum
Outstanding Amount pursuant to the Canadian Credit Agreement; any designation
or removal of Oil and Gas Subsidiaries; each determination of the Borrowing
Base; each determination of the amount of Borrowing Base Debt; termination or
reduction of Commitments under a Credit Agreement; actions taken by a Borrower
to cure a Borrowing Base Deficiency; provision of Cover; execution and delivery
of Security Documents; all financial statements or other reports provided by
the Canadian Borrower or the U.S. Borrower; each Engineering Report, Parent
Report or Company Report delivered under a Credit Agreement; each certificate
delivered pursuant to Section 9.2 of the Canadian Credit Agreement or the U.S.
Credit Agreement; all calculations or material furnished by a Borrower or
prepared by an Administrative Agent with respect to covenants contained in a
Credit Agreement; determinations made pursuant to Section 10.4 of either Credit
Agreement; notifications pursuant to Section 10.8 of either Credit Agreement;
and all actions contemplated and material steps in proceedings or payments
received in respect of any of the Combined Obligations following an Event of
Default.





                                       6
<PAGE>   7
2.4      NOTICE REQUIREMENTS

         Without restricting the obligations of the Administrative Agents
underSection 2.3, each Administrative Agent agrees with the other
Administrative Agent that it will:

         a.      concurrently with the delivery thereof to a Borrower, give the
                 other Administrative Agent a copy of any written notice of any
                 Default or Event of Default or any intention to exercise
                 remedies available under the applicable Credit Agreement with
                 respect thereto;

         b.      in the case of TCB, concurrently with the delivery thereof to
                 the U.S. Borrower, give Chemical a copy of any written notice
                 of a Borrowing Base Deficiency;

         c.      promptly after receipt thereof from a Borrower, give the other
                 Administrative Agent a copy of any written notice received
                 from a Borrower under Section 9.11 of its Credit Agreement;

         d.      give the other Administrative Agent prompt written notice of
                 any declaration of Acceleration or determination that
                 Acceleration has occurred under its Credit Agreement or that
                 all or any portion of the Commitments under its Credit
                 Agreement are terminated;

         e.      give the other Administrative Agent prompt written notice of
                 the commencement of any legal actions or proceedings taken by
                 it against a Borrower by reason of or arising out of any
                 Default or Event of Default;

         f.      in the case of TCB, give Chemical prompt written notice of any
                 determination or redetermination of the Borrowing Base (if
                 any) under the U.S. Credit Agreement; and

         g.      in the case of Chemical, give TCB prompt written notice of any
                 change in the Maximum Outstanding Amount under the Canadian
                 Credit Agreement.

2.5      PERMITTED ACTION BY THE LENDERS

         Notwithstanding any other provision of this Agreement, either
Administrative Agent or (subject to the terms of the relevant Credit Agreement)
any Lender may, without instruction from the Administrative Agent or Lenders
under the other Credit Agreement (but in no event shall be required to), take
action permitted by applicable law to preserve its rights and security
including but not limited to curing any default or alleged default under any
contract entered into by the relevant Borrower, paying any tax, fee or expense
on behalf of the relevant Borrower and paying insurance premiums on behalf of
the relevant Borrower.





                                       7
<PAGE>   8
2.6      CO-OPERATION

         Each Administrative Agent (and, where applicable, the Lenders under
the respective Credit Agreements) agrees with the other Administrative Agent
(and, where applicable, the Lenders under the other Credit Agreement) that:

         a.      to the extent available, it will from time to time promptly
                 provide such information to the other Administrative Agent as
                 may be reasonably necessary to enable the other Administrative
                 Agent to make any calculation referred to in or necessary to
                 implement Section 3 or otherwise reasonably required by the
                 other Administrative Agent for any other purpose hereof;

         b.      to the extent reasonably possible, it will from time to time
                 consult with the other Administrative Agent in good faith
                 regarding the enforcement of its and each of the Lender's
                 rights and remedies under its Credit Agreement with a view to
                 recovering amounts due under the Credit Agreements in an
                 effective and cost-efficient manner;

         c.      if, after an Event of Default, it gains access to a Borrower's
                 property, assets, financial information or data bases pursuant
                 to the exercise of its secured rights, it will provide
                 reasonable access to the other Administrative Agent to the
                 extent it may legally do so; and

         d.      each Lender will promptly notify its Administrative Agent in
                 writing of the receipt by such Lender of any Reallocable
                 Payment and the applicable Administrative Agent will promptly
                 notify the other Administrative Agent of such receipt.

2.7      ENFORCEMENT

         From and after Acceleration:

         a.      where reasonably practicable in the circumstances and in any
                 event prior to the appointment of a receiver or
                 receiver-manager or filing a bankruptcy petition in respect of
                 its Borrower, the Administrative Agent proposing to do so (the
                 "Enforcing Lender") agrees to consult and cooperate with the
                 other Administrative Agent in good faith regarding the
                 enforcement of its and each of its Lenders' rights with a view
                 to recovering amounts due under the Credit Agreements in an
                 efficient and cost-efficient manner;

         b.      any receiver or receiver-manager or bankruptcy trustee or
                 custodian appointed by an Enforcing Lender must be an
                 insolvency firm of national standing in Canada and the United
                 States of America (and, where applicable, each Enforcing
                 Lender





                                       8
<PAGE>   9
                 agrees that it will request any applicable court to similarly
                 appoint an insolvency firm of national standing in Canada and
                 the United States of America); and

         c.      if a receiver or receiver-manager is appointed pursuant to
                 clause b. above, the Lenders under each of the Credit
                 Agreements shall cause to be provided any reasonable indemnity
                 which may be necessary for such receiver or receiver-manager
                 or trustee, to the extent of their respective Operative
                 Sharing Percentages in respect to the obligations to which the
                 indemnity relates.

SECTION 3:       PARI PASSU SHARING

3.1      OVERALL INTENT

         It is the intention of the Lenders that, following the occurrence of
any Borrowing Base Deficiency or the Reference Date, they shall share in any
required payments or Security Documents delivered by the U.S. Borrower or the
Canadian Borrower to cure such Borrowing Base Deficiency and in any Reallocable
Payments received following the Reference Date pro rata to their respective
proportions of the Combined Outstandings.

3.2      PAYMENTS TO CURE BORROWING BASE DEFICIENCY

         Upon the delivery of a notice of Borrowing Base Deficiency to the U.S.
Borrower under Section 3.2(b)(2) of the U.S. Credit Agreement, the
Administrative Agents shall determine the Sharing Percentages of the Canadian
Lenders and the U.S. Lenders at the time of such notice.  The U.S. Borrower and
the Canadian Borrower agree that any payments required to cure such Borrowing
Base Deficiency shall be made by the U.S. Borrower to the U.S. Lenders and by
the Canadian Borrower to the Canadian Lenders (with the Maximum Outstanding
Amount--as such term is defined in the Canadian Credit Agreement--to be reduced
by the amount of such payments by the Canadian Borrower) in accordance with
their respective Sharing Percentages as so determined.  For this purpose, if
any such payment is made in Canadian Dollars under the Canadian Credit
Agreement, the Equivalent U.S. Dollar Amount thereof shall be considered to
have been made.  For purposes of this Section 3.2, the Sharing Percentages of
the Lenders shall be recalculated as of each January 1, April 1, June 1 and
September 1 using the Combined Outstandings at the time of the applicable
notice of Borrowing Base Deficiency but using the then current Equivalent U.S.
Dollar Amount with respect to any of such Combined Outstandings denominated in
Canadian Dollars.

3.3      EQUALIZATION FOLLOWING THE OCCURRENCE OF THE REFERENCE DATE

         a.      As of the Reference Date, the Operative Sharing Percentages of
the respective Lenders shall be determined.

         b.      Upon any receipt by any Administrative Agent (or by the Paying
Agent under the





                                       9
<PAGE>   10
                 Canadian Credit Agreement) of any Reallocable Payments (after
                 giving effect to application of such receipts), the Post
                 Default Proportions of the U.S. Lenders and the Canadian
                 Lenders shall be determined.

         c.      If the Post Default Proportion of the U.S. Lenders and the
                 Post Default Proportion of the Canadian Lenders calculated
                 pursuant to Section 3.3.b above are not equal to their
                 respective Operative Sharing Percentages, then the Lenders
                 whose Post Default Proportion is less than their Operative
                 Sharing Percentages shall firstly, repurchase participations
                 previously sold by them to other Lenders (such participation
                 interests to be allocated pro rata among the sellers in
                 accordance with their respective Operative Sharing
                 Percentages) and then purchase participations in the U.S.
                 Credit Outstandings or the Canadian Credit Outstandings, as
                 the case may be (such participation interests to be allocated
                 pro rata among the sellers in accordance with their respective
                 Operative Sharing Percentages), in U.S. Dollars on a
                 non-recourse basis so that, after such payment by the
                 purchasing Lenders and receipt thereof by the selling Lenders,
                 their respective Post Default Proportions shall equal their
                 Operative Sharing Percentages; provided, however, that if
                 after any amount is paid under this Section 3.3.c. a Borrower
                 or any trustee, liquidator, receiver or receiver-manager or
                 Person with analogous powers recovers any amount from any
                 Lenders ("Disgorging Lenders") in respect of any amount
                 theretofore applied to the U.S. Credit Outstandings or the
                 Canadian Credit Outstandings, then such amount (including any
                 interest paid by the Lenders) shall be treated for all
                 purposes:

                 i.       as between the relevant Borrower and the Disgorging
                          Lenders; and

                 ii.      as between the Disgorging Lenders and the other
                          Lenders (the "Non-Disgorging Lenders"),

                 to be outstanding as U.S. Credit Outstandings or Canadian
                 Credit Outstandings (as applicable), in which case the Post
                 Default Proportions shall thereupon be adjusted and this
                 Section 3.3.c. again applied.

         d.      Notwithstanding anything contained in this Agreement or the
                 Credit Agreements, the purchase of participations in the
                 Canadian Credit Outstandings hereunder by the U.S. Lenders and
                 the acquisition of an undivided interest in any property by
                 the U.S. Lenders from any Canadian Lender or the Canadian
                 Agent or the Paying Agent, as the case may be, pursuant to
                 Section 6.12 hereof shall not constitute an acquisition by the
                 U.S. Lenders of any beneficial interest in the Canadian Credit
                 Agreement or any amount owing thereunder but shall constitute
                 risk sharing payments among the Canadian Lenders and the U.S.
                 Lenders and the beneficial interest in the Canadian Credit
                 Agreement and all amounts owing thereunder shall at all times
                 remain with the Canadian Lenders.





                                       10
<PAGE>   11
3.4      INFORMATION

         From time to time following the occurrence of an Acceleration, each
Lender shall promptly provide its Administrative Agent with all necessary
information to enable the Administrative Agent to calculate Canadian Credit
Outstandings or U.S. Credit Outstandings, Operative Sharing Percentages and
Post Default Proportions of the Lenders, including any payments received.

3.5      PARAMOUNTCY OF PRO RATA TREATMENT

         The arrangements contemplated by this Agreement shall apply
notwithstanding the time of any Event of Default or any Acceleration under a
Credit Agreement or demand under a Guaranty; the date of execution, delivery,
attachment, perfection or registration of any Security Document (or lack of any
thereof); the priority of any Security Document; the date of advance of any
funds; the date of creation, perfection or determination of any charges or
security interests; the date of appointment of any receiver or receiver-manager
or bankruptcy trustee or of taking any other enforcement proceedings; the date
of obtaining any judgment; the date of notification in respect of any account
receivable; any provision of applicable law or requirement of any Governmental
Authority; any defence, claim or any right not provided under this Agreement;
or the terms of any agreement between any Lender and/or a Borrower under any
other document or instrument between or among such parties, whether or not
bankruptcy, receivership or insolvency proceedings shall at any time have been
commenced.

SECTION 4:       RIGHTS OF LENDERS

4.1      RIGHTS OF LENDERS

         Subject to the terms of this Agreement, each Administrative Agent and
Lender shall be entitled to:

         a.      deal with its Borrower and with others in connection with its
                 Credit Agreement, give notices to and accept notices from its
                 Borrower thereunder  and administer its Credit Agreement free
                 from interference by any other Lender;

         b.      enforce the provisions of its Credit Agreement and Loan
                 Documents referred to therein to which it is a party,
                 including suing for enforcement of the representations,
                 covenants and payment obligations therein contained, whether
                 or not it accelerates the maturity of any payment obligations;

         c.      demand repayment or accelerate the maturity of any payment
                 obligation under the Credit Agreement to which it is a party;

         d.      amend or otherwise modify the Credit Agreement to which it is
                 a party;





                                       11
<PAGE>   12
         e.      accept new security for the obligations of its Borrower under
                 its Credit Agreement;

         f.      provide any releases of its Security Documents in connection
                 with a disposition of collateral by its Borrower; or

         g.      consent to any plan of arrangement or plan of reorganization
                 involving its Borrower under any bankruptcy or insolvency law.

SECTION 5:       ASSIGNMENT

5.1      ASSIGNEES

         No provision of this Agreement shall restrict in any manner the
assignment, participation or other transfer by a Lender of all or part of its
right, title or interest under its Credit Agreement; provided that, unless the
assignee becomes a Lender for purposes hereof in accordance with Section 13.5
of the Credit Agreements, the assigning Lender shall remain responsible for
performance of this Agreement with respect to the interest assigned, all as
more fully set forth herein.  All participations purchased or sold pursuant to
the terms hereof shall be consummated in accordance with the terms of Section
13.5 of the applicable Credit Agreement.

SECTION 6:       MISCELLANEOUS

6.1      NO PARTNERSHIP OR JOINT VENTURE

         Nothing contained in this Agreement, and no action taken by the
Administrative Agents or the Lenders (or any of them) pursuant hereto, is
intended to constitute or shall be deemed to constitute the Administrative
Agents or the Lenders a partnership, association, joint venture or other
entity.

6.2      NOTICES

         All notices, requests and other communications to any party hereunder
shall be given in accordance withSection 13.2 of the applicable Credit
Agreement.

6.3      AMENDMENTS AND WAIVERS

         Any provision of this Agreement may be amended or waived if, and only
if, such amendment or waiver is in writing and signed by the Combined Majority
Lenders; provided, however, that:

         (i)     the provisions of Section 3 of this Agreement and of this
                 Section 6.3 may only be amended with the unanimous written
                 consent of all of the Lenders;





                                       12
<PAGE>   13
         (ii)    the provisions hereof relating to "Requesting Banks" or to
                 "Combined Requesting Banks" may only be amended with the
                 unanimous written consent of the Combined Requesting Lenders;
                 and

         (iii)   the provisions hereof relating to "Super Majority Banks" or to
                 "Combined Super Majority Banks" may only be amended with the
                 unanimous written consent of the Combined Super Majority
                 Lenders.

6.4      CURRENCY AND PAYMENT MATTERS

         All payments hereunder shall be made in immediately available funds in
United States Dollars.  All payments to any Lender hereunder shall be made to
it, to the extent practicable, in accordance with the provisions of the
relevant Credit Agreement.

6.5      COUNTERPARTS; EFFECTIVENESS

         This Agreement may be signed in any number of counterparts, each of
which shall be an original, and all of which taken together shall constitute a
single agreement, with the same effect as if the signatories thereto and hereto
were upon the same instrument.  This Agreement shall become effective when:

         a.      executed by each of the parties listed on the signature pages 
                 hereof; and

         b.      the first advance under the Canadian Credit Agreement shall 
                 have been made.

6.6      BENEFITS

         This Agreement is solely for the benefit of and shall be binding upon
the Lenders and their successors or assigns, and neither the Borrowers nor any
other third party shall have any right, benefit, priority or interest under or
by reason of this Agreement.

6.7      GOVERNING LAW

         THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE APPLICABLE LAWS (OTHER THAN THE CONFLICT OF LAWS RULES) OF THE STATE OF
TEXAS AND THE UNITED STATES OF AMERICA FROM TIME TO TIME IN EFFECT.  EACH PARTY
HERETO IRREVOCABLY SUBMITS TO THE NON-EXCLUSIVE JURISDICTION OF THE COURTS OF
THE STATE OF TEXAS FOR PURPOSES OF ANY SUIT, ACTION OR OTHER PROCEEDING ARISING
OUT OF OR IN CONNECTION WITH THIS AGREEMENT THAT MAY BE BROUGHT OR INSTITUTED
AGAINST IT.





                                       13
<PAGE>   14
6.8      ENTIRE AGREEMENT

         This Agreement supersedes any conflicting provisions in any other
agreements or instruments to which the Lenders are parties, with respect to the
rights, duties and obligations of the Lenders to each other.

6.9      TIME OF THE ESSENCE

         Time is of the essence of this Agreement.

6.10     SEVERABILITY

         Any provision of this Agreement which is prohibited or unenforceable
in any jurisdiction shall, as to such jurisdiction, be ineffective to the
extent of such prohibition or unenforceability without invalidating the
remaining provisions hereof, and any such prohibition or unenforceability in
any jurisdiction shall not invalidate or render unenforceable such provision in
any other jurisdiction.

6.11     ADMINISTRATIVE AGENTS AND PAYING AGENT ENTITLED TO BENEFITS OF SECTION
         12 OF CREDIT AGREEMENTS

         Each of the Administrative Agents, and the Paying Agent under the
Canadian Credit Agreement, shall be entitled to the benefits of Section 12 of
its Credit Agreement and also to the benefits of Section 12 of the other Credit
Agreement as if it were the named "Administrative Agent" (or a named "Agent" in
the case of the Canadian Credit Agreement) under such other Credit Agreement
(provided that any payment under the indemnification provisions of Section 12.5
of either Credit Agreement relating to the collection of the Combined
Obligations shall be shared by all Lenders as herein provided), in connection
with the performance under this Agreement.

6.12     CERTAIN MATTERS RELATING TO COLLATERAL GENERALLY

         If any collateral or security shall be taken in respect of any of the
Combined Outstandings (other than Cover provided under either of the Credit
Agreements and other than collateral rights in deposit accounts and other
similar liquid assets held by any Lender in the normal course of business), the
rights of the Lenders with regard to such collateral shall be exercised through
a collateral agent to be selected by the Canadian Administrative Agent and the
U.S. Administrative Agent and approved by the Combined Majority Banks.  If any
property shall be conveyed to the Canadian Administrative Agent (or the Paying
Agent under the Canadian Credit Agreement) or the U.S. Administrative Agent or
any Lender by deed-in-lieu of foreclosure or under similar arrangement for the
satisfaction of any of the Combined Obligations, the property so acquired shall
be appraised as of the date of acquisition, the appraised value shall be
treated as a Reallocable Payment for purposes of Section 3 and the applicable
Lender or Administrative





                                       14
<PAGE>   15
Agent or the Paying Agent, as the case may be, shall convey undivided interests
in such property in lieu of the purchase and sale of participation interests
provided for in Section 3.

6.13     JOINDER BY U.S. BORROWER, GUARANTOR AND CANADIAN BORROWER

         The U.S. Borrower, the Guarantor and the Canadian Borrower consent to
the provisions of this Agreement, including without limitation the disclosure
of information provided for herein, the sharing of payments provided for herein
and the purchase and sale of participations in the U.S. Credit Agreement and
the Canadian Credit Agreement provided for herein.  The U.S. Borrower, the
Guarantor and the Canadian Borrower agree to do all things and take all such
actions as shall be reasonably necessary to give effect to the provisions of
this Agreement.  To the extent the application of the provisions hereof give
rise to any liability for any withholding tax payments in connection with any
payments made by the Canadian Borrower, the U.S. Borrower, the Guarantor or any
other Relevant Party under either of the Credit Agreements, then
(notwithstanding any provisions to the contrary set forth in either of the
Credit Agreements), the Borrowers, jointly and severally, shall indemnify each
of the applicable Lenders and shall hold each of the applicable Lenders
harmless from and against any such liability; provided, however, that each of
the Lenders (if so requested by the Borrower under its Credit Agreement through
the Administrative Agent) will use good faith efforts to accommodate any
reasonable request by such Borrower in order to avoid the need for, or reduce
the amount of, such compensation so long as the request will not, in the sole
opinion of the applicable Lender, be disadvantageous to such Bank.





                                       15
<PAGE>   16
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed as of the date hereof by their respective officers thereunto
duly authorized.

            NOTICE PURSUANT TO TEX. BUS. & COMM. CODE Section 26.02

         THIS AGREEMENT AND ALL OTHER LOAN DOCUMENTS (AS DEFINED IN THE
RESPECTIVE CREDIT AGREEMENTS) EXECUTED BY ANY OF THE PARTIES BEFORE OR
SUBSTANTIALLY CONTEMPORANEOUSLY WITH THE EXECUTION HEREOF TOGETHER CONSTITUTE A
WRITTEN LOAN AGREEMENT AND REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES
AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT
ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN
THE PARTIES.


                              TEXAS COMMERCE BANK NATIONAL
                              ASSOCIATION, as Administrative
                              Agent under the U.S. Credit
                              Agreement and on behalf of the
                              U.S. Lenders


                              By: _____________________________________________
                                    Robert C. Mertensotto, 
                                    Senior Vice President



                              CHEMICAL BANK OF CANADA, as
                              Administrative Agent under the
                              Canadian Credit Agreement and
                              on behalf of the Canadian Lenders


                              By: _____________________________________________
                              Name: ___________________________________________
                              Title: __________________________________________





                                       16
<PAGE>   17
JOINDER:

SEAGULL ENERGY CORPORATION
(as Borrower under the U.S. Credit
Agreement and as a guarantor in respect
of the Canadian Credit Agreement)


By: _________________________________                                        
         Robert M. King,
         Vice President, Corporate
         Development and Treasurer



SEAGULL ENERGY CANADA LTD.
(as Borrower under the Canadian
Credit Agreement)


By: _________________________________                        
         Robert M. King,
         Vice President





                                       17

<PAGE>   1
                                                                   Exhibit 2.8





                    BANKERS' ACCEPTANCE                    No. _______________



To____________________       Due_________________        ______________, 19___
         Bank

______________________                 _______ days after date (without grace)
       Address


       ACCEPTED                        For value received pay to the order of
                                       the undersigned drawer the sum of
                                       $________________ Dollars

______________________ 
      Payable At                                   $
                                                    ================         
______________________

______________________          Value Received, and Charge to the Account of:

______________________                   SEAGULL ENERGY CANADA LTD.


For___________________                   Per:______________________

______________________                                  
Authorized Signature

______________________                                  
Authorized Signature





                                    EXHIBIT K
                                       to
                                 Credit Agreement
                                     (front)





<PAGE>   2





                        SEAGULL ENERGY CANADA LTD.



                        Per:_____________________                             





                                EXHIBIT K
                                   to
                             Credit Agreement
                                (reverse)






<PAGE>   1

                                                                Exhibit 2.9

                                   GUARANTEE



         THIS GUARANTEE (this "Guarantee") dated as of December 30, 1993 is
executed and delivered by SEAGULL ENERGY CORPORATION, a Texas corporation
("Guarantor") to CHEMICAL BANK OF CANADA, as Administrative Agent
("Administrative Agent") for itself and Banks (as defined in the hereinafter
identified Credit Agreement) under the Credit Agreement (as hereinafter
defined).

                                   ARTICLE 1

         Section 1.1. Definitions.  As used in this Guarantee, these terms
shall have these respective meanings:

         Borrower means Seagull Energy Canada Ltd., a corporation organized
under the laws of the Province of Alberta, Canada.

         Credit Agreement means the Credit Agreement dated concurrently
herewith executed among Borrower, Chemical Bank of Canada, as Arranger and
Administrative Agent, The Bank of Nova Scotia, as Paying Agent and as Co-Agent,
Canadian Imperial Bank of Commerce, as Co-Agent, and the Banks, as it may be
amended, supplemented, restated or replaced from time to time.

         Debt means the sum of (a) all debt (principal, interest or other)
evidenced by the Notes, the Letter of Credit Liabilities, the Reimbursement
Obligations, or any of the foregoing, and all other obligations incurred under
or arising pursuant to or in connection with the Credit Agreement or any of the
Loan Documents, (b) all obligations and indebtedness ("Interest Rate
Obligations") of Borrower to any one or more of the Banks or an Affiliate of a
Bank (and if Interest Rate Obligations are owed to an Affiliate of a Bank, the
references to "Bank" or "Banks" shall, where the context permits, be deemed to
include such Affiliate) in connection with any program for interest rate
protection permitted under the Credit Agreement or otherwise approved in
writing by the Majority Banks and (c) all obligations and indebtedness
("Contract Obligations") of Borrower to any one or more of the Banks under any
contract for sale for future delivery of commodities (whether or not the
subject commodities are to be delivered), hedging contract, forward contract,
swap agreement, futures contract or other similar agreement permitted under the
Credit Agreement or otherwise approved in writing by the Majority Banks.  The
Debt includes interest and other obligations accruing or arising in connection
with the foregoing after (a) commencement of any case under any bankruptcy or
similar laws by or against any Obligor or (b) the obligations of any Obligor
shall cease to exist by operation of law or for any other reason.  The Debt
also includes all reasonable attorneys' fees and any other





                                       1
<PAGE>   2
                                                                       
expenses incurred by any Agent in negotiating, monitoring or enforcing the
Loans, the Notes, the Bankers' Acceptances, the Letter of Credit Liabilities,
the Reimbursement Obligations, the Interest Rate Obligations, the Contract
Obligations or any of the Loan Documents or defending against any claims
arising directly or indirectly in respect of or on account of any of the Debt.

         Obligor means any person or entity now or hereafter primarily or
secondarily obligated to pay all or any part of the Debt, including Borrower
and Guarantor.

Unless redefined in this Guarantee, any capitalized term used in this Guarantee
has the meaning ascribed to it in the Credit Agreement.

                                   ARTICLE 2

         Section 2.1. Execution of Loan Documents.  Borrower has executed and
delivered the Notes and the other documents evidencing the Debt to Agents and
Banks, and the Debt is secured by certain of the liens, security interests,
collateral assignments and other security devices created, evidenced or carried
forward by the Loan Documents.

         Section 2.2. Consideration.  In consideration of the credit and
financial accommodations contemplated to be extended to Borrower by Agents and
Banks pursuant to the documents evidencing the Debt, the other Loan Documents
or otherwise, which Guarantor has determined will substantially benefit it
directly or indirectly, and for other good and valuable consideration, the
receipt and sufficiency of which Guarantor hereby acknowledges, Guarantor
executes and delivers this Guarantee to Administrative Agent with the intention
of being presently and legally bound by its terms.

                                   ARTICLE 3

         Section 3.1. Payment Guarantee.  Guarantor, as a primary obligor and
not as a surety, unconditionally guarantees to Administrative Agent for the
ratable benefit of Banks the full, prompt and punctual payment of the Debt when
due (whether at its stated maturity, by acceleration or otherwise) in
accordance with the Loan Documents.  This Guarantee is irrevocable,
unconditional and absolute, and if for any reason all or any portion of the
Debt shall not be paid when due, Guarantor will immediately pay the Debt to
Paying Agent or other Person entitled to it, in U.S. Dollars or in Canadian
Dollars, whichever currency or currencies in which the Debt is then
denominated, regardless of (a) any defense, right of set-off or counterclaim
which any Obligor may have or assert, (b) whether any Agent or any other Person
shall have taken any steps to enforce any rights against any Obligor or any
other Person to collect any of the Debt, and (c) any other circumstance,
condition or contingency.





                                       2
<PAGE>   3

         Section 3.2. Application of Payments or Prepayments.  The parties
hereto agree that any payment or prepayment by Borrower or any other Person
against the Debt shall be deemed paid in such order and manner as
Administrative Agent shall determine in its sole discretion.

         Section 3.3. Obligations Not Affected.  Guarantor's covenants,
agreements and obligations under this Guarantee shall in no way be released,
diminished, reduced, impaired or otherwise affected by reason of the happening
from time to time of any of the following things, for any reason, whether by
voluntary act, operation of law or order of any competent governmental
authority and whether or not Guarantor is given any notice or is asked for or
gives any further consent (all requirements for which, however arising,
Guarantor hereby WAIVES):

                 (a)      release or waiver of any obligation or duty to
perform or observe any express or implied agreement, covenant, term or
condition imposed in any of the Loan Documents or by applicable law on any
Obligor or any party to the Loan Documents.

                 (b)      extension of the time for payment of any part of the
Debt or any other sums payable under the Loan Documents, extension of the time
for performance of any other obligation under or arising out of or in
connection with the Loan Documents or change in the manner, place or other
terms of such payment or performance.

                 (c)      settlement or compromise of any or all of the Debt.

                 (d)      renewal, supplementing, modification, rearrangement,
amendment, restatement, replacement, cancellation, rescission, revocation or
reinstatement (whether or not material) of any part of any of the Loan
Documents or any obligations under the Loan Documents of any Obligor or any
other party to the Loan Documents.

                 (e)      acceleration of the time for payment or performance
of any Debt or other obligation under any of the Loan Documents or exercise of
any other right, privilege or remedy under or in regard to any of the Loan
Documents.

                 (f)      failure, omission, delay, neglect, refusal or lack of
diligence by any Agent or any other Person to assert, enforce, give notice of
intent to exercise--or any other notice with respect to--or exercise any right,
privilege, power or remedy conferred on any Agent or any other Person in any of
the Loan Documents or by law or action on the part of any Agent or any other
Person granting indulgence, grace, adjustment, forbearance or extension of any
kind to any Obligor or any other Person.

                 (g)      release, surrender, exchange, subordination or loss
of any security or lien priority under any of the Loan Documents or in
connection with the Debt.





                                       3
<PAGE>   4

                 (h)      release, modification or waiver of, or failure,
omission, delay, neglect, refusal or lack of diligence to enforce, any
guaranty, pledge, mortgage, deed of trust, security agreement, lien, charge,
insurance agreement, bond, letter of credit or other security device, guaranty,
surety or indemnity agreement whatsoever.

                 (i)      taking or acceptance of any other security or
guaranty for the payment or performance of any or all of the Debt or the
obligations of any  Obligor.

                 (j)      release, modification or waiver of, or failure,
omission, delay, neglect, refusal or lack of diligence to enforce, any right,
benefit, privilege or interest under any contract or agreement, under which the
rights of any Obligor have been collaterally or absolutely assigned, or in
which a security interest has been granted, to any Agent or any Bank as direct
or indirect security for payment of the Debt or performance of any other
obligations to--or at any time held by--any Agent or any Bank.

                 (k)      death, legal incapacity, disability, voluntary or
involuntary liquidation, dissolution, sale of any collateral, marshaling of
assets and liabilities, change in corporate or organizational status,
receivership, insolvency, bankruptcy, assignment for the benefit of creditors,
reorganization, arrangement, composition or readjustment of debt or other
similar proceedings of or affecting any Obligor or any of the assets of any
Obligor, even if any of the Debt is thereby rendered void, unenforceable or
uncollectible against any other Person.

                 (l)      occurrence or discovery of any irregularity,
invalidity or unenforceability of any of the Debt or Loan Documents or any
defect or deficiency in any of the Debt or Loan Documents, including the
unenforceability of any provisions of any of the Loan Documents because
entering into any such Loan Document was ultra vires or because anyone who
executed them exceeded their authority.

                 (m)      failure to acquire, protect or perfect any lien or
security interest in any collateral intended to secure any part of the Debt or
any other obligations under the Loan Documents or failure to maintain
perfection.

                 (n)      failure by any Agent or any other Person to
notify--or timely notify--Guarantor of any default, event of default or similar
event (however denominated) under any of the Loan Documents, any renewal,
extension, supplementing, modification, rearrangement, amendment, restatement,
replacement, cancellation, rescission, revocation or reinstatement (whether or
not material) or assignment of any part of the Debt, release or exchange of any
security, any other action taken or not taken by any Agent or any other Person
against any Obligor or any other Person or any direct or indirect security for
any part of the Debt or other obligation of Borrower, any new agreement between
any Agent and/or any Bank and any Obligor or any other Person or any other
event or circumstance.  Neither any Agent nor any Bank has any duty or
obligation to give Guarantor any notice of any kind under any





                                       4
<PAGE>   5

circumstances whatsoever with respect to or in connection with the Debt or the
Loan Documents.

                 (o)      occurrence of any event or circumstances which might
otherwise constitute a defense available to, or a discharge of, any Obligor,
including failure of consideration, fraud by or affecting any Person, usury,
forgery, breach of warranty, failure to satisfy any requirement of the statute
of frauds, running of any statute of limitation, accord and satisfaction and
any defense based on election of remedies of any type.

                 (p)      receipt and/or application of any proceeds, credits
or recoveries from any source, including any proceeds, credits, or amounts
realized from exercise of any of Agents' rights, remedies, powers or privileges
under the Loan Documents, by law or otherwise available to any Agent or any
Bank.

                 (q)      occurrence of any act, error or omission of any Agent
or any other Person, except behavior which is proven to be in bad faith to the
extent (but no further) that the Guarantor cannot effectively waive the right
to complain.

         Section 3.4. Waiver of Certain Rights and Notices.  Guarantor hereby
WAIVES and RELEASES all right to require marshalling of assets and liabilities,
sale in inverse order of alienation, notice of acceptance of this Guarantee and
of any liability to which it applies or may apply, notice of the creation,
accrual, renewal, increase, extension, modification, amendment or rearrangement
of any part of the Debt, presentment, demand for payment, protest, notice of
nonpayment, notice of dishonor, notice of intent to accelerate, notice of
acceleration and all other notices and demands, collection, suit and the taking
of any other action by any Agent or any Bank.

         Section 3.5. Not a Collection Guarantee.  This is an absolute
guarantee of payment, and not of collection, and Guarantor WAIVES any right to
require that any action be brought against any Obligor or any other Person, or
that any Agent or any Bank be required to enforce or exhaust any of its rights,
benefits or privileges under any of the Loan Documents, by law or otherwise;
provided that nothing herein shall be construed to prevent any Agent or any
Bank from exercising and enforcing at any time any right, benefit or privilege
which it may have under any Loan Document or by law from time to time, and at
any time, and Guarantor agrees that Guarantor's obligations hereunder are--and
shall be--absolute, independent and unconditional under any and all
circumstances.  Should any Agent or any Bank seek to enforce Guarantor's
obligations by action in any court, Guarantor WAIVES any requirement,
substantive or procedural, that such Agent or such Bank pursue any foreclosure
action or that a judgment first be sought or rendered against any Obligor or
any other Person or that any Obligor or any other Person be joined in such
cause or that a separate action be brought against any Obligor or any other
Person.  Guarantor's obligations under this Guarantee are several from those of
any other Obligor or any other Person, and are primary obligations concerning
which Guarantor is the





                                       5
<PAGE>   6

principal obligor.  All waivers in this Guarantee or any of the Loan Documents
shall be without prejudice to any Agent or any Bank at its option to proceed
against any Obligor or any other Person, whether by separate action or by
joinder.  Guarantor agrees that this Guarantee shall not be discharged except
by payment of the Debt in full, complete performance of all obligations of the
Obligors on the Debt and termination of the obligation--if any--to make any
further advances under the Loan Documents or extend other financial
accommodations to any Obligor.

         Section 3.6. Subrogation.  Guarantor agrees that it shall not be
entitled to exercise any rights of subrogation to any Agent's or any Bank's
rights against any Obligor or any other Person or any collateral or offset
rights held by any Agent or any Bank for payment of the Debt until final
termination of this Guarantee.

         Section 3.7. Reliance on Guarantee.  All extensions of credit and
financial accommodations heretofore or hereafter made by any Agent or any Bank
under or in respect of the Debt or Loan Documents shall be conclusively
presumed to have been made in acceptance of this Guarantee.

         Section 3.8. Demands are Conclusive.  A certificate submitted to
Guarantor by any Administrative Agent setting forth the basis for any demand by
Administrative Agent hereunder shall constitute a demand hereunder and shall be
conclusive, absent manifest error, as to the matters therein stated, including
the amount due.

         Section 3.9.  Joint and Several.  If any Person makes any guaranty of
any of the obligations guaranteed hereby or gives any security for them,
Guarantor's obligations hereunder shall be joint and several with the
obligations of such other Person pursuant to such agreement or other papers
making the guaranty or giving the security.

         Section 3.10.  Payments Returned.  Guarantor agrees that, if at any
time all or any part of any payment previously applied by any Agent or any Bank
to the Debt is or must be returned by any Agent or any Bank--or recovered from
any Agent or any Bank--for any reason (including the order of any bankruptcy
court), this Guarantee shall automatically be reinstated to the same effect as
if the prior application had not been made, and, in addition, Guarantor hereby
agrees to indemnify Agents and Banks against, and to save and hold Agents and
Banks harmless from any required return by any Agent or any Bank--or recovery
from any Agent or any Bank-- of any such payment because of its being deemed
preferential under applicable bankruptcy, receivership or insolvency laws, or
for any other reason.

                                   ARTICLE 4

         Guarantor warrants and represents as follows:





                                       6
<PAGE>   7

         Section 4.1. Relationship to Borrower.   Guarantor has determined that
its liability and obligation under this Guarantee may reasonably be expected to
substantially benefit Guarantor directly or indirectly, and Guarantor's board
of directors has made that determination.  Borrower and Guarantor are mutually
dependent on each other in the conduct of their respective businesses and are,
and do business together with the other Subsidiaries of Guarantor as, an
integrated business enterprise involved in the development, exploration,
production, marketing and transportation of oil, gas and other minerals.  The
maintenance and improvement of Borrower's financial condition is vital to
sustaining the business of Guarantor and the transactions contemplated in the
Credit Agreement produce distinct and identifiable financial and economic
direct or indirect benefits to Guarantor.  Such identifiable benefits include
the availability of the proceeds of the Revolving Credit Loans to Guarantor on
an as needed basis by way of intercompany loans and/or capital contributions
for general corporate or other purposes.  Guarantor has had full and complete
access to the underlying papers relating to the Debt and all other papers
executed by any Obligor or any other Person in connection with the Debt, has
reviewed them and is fully aware of the meaning and effect of their contents.
Guarantor is fully informed of all circumstances which bear upon the risks of
executing this Guarantee and which a diligent inquiry would reveal.  Guarantor
has adequate means to obtain from Borrower on a continuing basis information
concerning Borrower's financial condition, and is not depending on any Agent or
any Bank to provide such information, now or in the future.  Guarantor agrees
that neither any Agent nor any Bank shall have an obligation to advise or
notify Guarantor or to provide Guarantor with any data or information.  The
execution and delivery of this Guarantee is not a condition precedent (and
neither any Agent nor any Bank has in any way implied that the execution of
this Guarantee is a condition precedent) to any Agent's or any Bank's making,
extending or modifying any loan or any other financial accommodation to or for
Guarantor.

         Section 4.2. Proceedings.  No bankruptcy or insolvency proceedings are
pending or contemplated by or--to the best of Guarantor's knowledge--against
Guarantor.

                                   ARTICLE 5

         Section 5.1. Term.  Subject to the automatic reinstatement provisions
of Article 3 above, this Guarantee shall terminate and be of no further force
or effect upon full payment of the Debt,  complete performance of all of the
obligations of the Obligors under the Loan Documents and final termination of
the obligation--if any--to make any further advances under the Loan Documents
or to provide any other financial accommodations to any Obligor.

                                   ARTICLE 6

         Section 6.1. Binding on Successors; No Assignment by Guarantor.  All
guaranties, warranties, representations, covenants and agreements in this
Guarantee shall bind the successors and assigns of Guarantor and shall benefit
Agents and Banks and their respective successors and





                                       7
<PAGE>   8

assigns, and any holder of any part of the Debt.  Guarantor shall not assign or
delegate any of its obligations under this Guarantee or any of the Loan
Documents without Administrative Agent's and the Banks' express prior written
consent.

         Section 6.2. Subordination of Borrower's Obligations to Guarantor.
Guarantor agrees that if, for any reason whatsoever, Borrower now or hereafter
becomes liable, obligated or indebted to Guarantor, all such liabilities,
obligations and indebtedness, together with all interest thereon and fees and
other charges in connection therewith, and all liens, security interests,
charges and other security devices, shall at all times, be second, subordinate
and inferior in right of payment, in lien priority and in all other respects to
the Debt and all liens, collateral assignments, security interests and other
security devices securing the Debt.

         Section 6.3. Waiver of Suretyship Rights.  By signing this Guarantee,
Guarantor WAIVES each and every right to which it may be entitled by virtue of
any suretyship law, including any rights it may have under applicable laws to
require that any action or proceeding be commenced against Borrower or any
other Person as a condition to the institution of any action or proceeding
relating to the obligations of Guarantor hereunder.

         Section 6.4. Amendments in Writing.  This Guarantee shall not be
changed orally but shall be changed only by agreement in writing signed by
Guarantor and Administrative Agent.  Any waiver or consent with respect to this
Guarantee shall be effective only in the specific instance and for the specific
purpose for which given.  No course of dealing between the parties, no usage of
trade and no parole or extrinsic evidence of any nature shall be used to
supplement or modify any of the terms or provisions of this Guarantee.

         Section 6.5. Notices.  Any notices or other communications required or
permitted to be given hereunder shall be given or made by telex, telegraph,
telecopy (confirmed by mail), mail, cable or other writing and telexed,
telecopied, telegraphed, cabled, mailed or delivered to the intended recipient
at the address set forth below for such recipient or at such other address as
shall be designated by such recipient in a notice to the other parties hereto
given in accordance with this Section :





                                       8
<PAGE>   9
                                                                        

                 If to Guarantor:

                 Seagull Energy Corporation
                 1001 Fannin, Suite 1700
                 Houston, Texas  77002
                 Attention:  Treasurer

                 If to Administrative Agent:

                 Chemical Bank of Canada,
                   as Administrative Agent
                 100 Yonge Street, Suite 90
                 Toronto, Ontario  CANADA M5C 2W1
                 Attention:  Mr. David McGorman

Except as may be otherwise provided herein, all notices and other
communications shall be deemed to have been duly received when transmitted by
telex or telecopier during regular business hours, delivered to the telegraph
or cable office, or personally delivered or, in the case of a mailed notice,
three (3) days after deposit in the United States mail, postage prepaid,
certified mail with return receipt requested (or upon actual receipt, if
earlier), in each case given or addressed as aforesaid.  Actual notice, however
and from whomever given or received, shall always be effective when received.

         Section 6.6. Gender; "Including" is Not Limiting; Section Headings.
The masculine and neuter genders used in this Guarantee each includes the
masculine, feminine and neuter genders, and the singular number includes the
plural where appropriate, and vice versa.  Wherever the term "including" or a
similar term is used in this Guarantee, it shall be read as if it were written
"including by way of example only and without in any way limiting the
generality of the clause or concept referred to."  The headings used in this
Guarantee are included for reference only and shall not be considered in
interpreting, applying or enforcing this Guarantee.

         Section 6.7. Right of Setoff.  Guarantor hereby agrees with and
consents to the provisions of Section 11.4 of the Credit Agreement.  Without
limiting the generality of the foregoing, Guarantor consents to the granting of
the security interest in and the collateral transfer of all of the deposits,
funds or property of Guarantor or Indebtedness of any Bank to Guarantor for the
purposes set forth in Section 11.4 of the Credit Agreement.

         Section 6.8. Venue.  This Guarantee is performable in Calgary,
Alberta, Canada, which shall be a proper place of venue for suit on or in
respect of this Guarantee.  Guarantor irrevocably agrees that any legal
proceeding in respect of this Guarantee shall be brought in the courts of the
Province of Alberta and the courts of appeal therefrom (collectively, the
"Specified Courts").  Guarantor hereby irrevocably submits to the nonexclusive
jurisdiction of such courts.





                                       9
<PAGE>   10

Guarantor hereby irrevocably waives, to the fullest extent permitted by law,
any objection which it may now or hereafter have to the laying of venue of any
suit, action or proceeding arising out of or relating to any Loan Document
brought in any Specified Court, and hereby further irrevocably waives any
claims that any such suit, action or proceeding brought in any such court has
been brought in an inconvenient forum.  Guarantor further (1) agrees to
designate and maintain an agent for service of process in Calgary, Alberta,
Canada in connection with any such suit, action or proceeding and to deliver to
Administrative Agent evidence thereof and (2) irrevocably consents to the
service of process out of any of the aforementioned courts in any such suit,
action or proceeding by the mailing of copies thereof by registered mail,
return receipt requested, postage prepaid, to Guarantor at its address as
provided in this Guarantee or as otherwise provided by governing law.  Nothing
herein shall affect the right of any Agent or any Bank to commence legal
proceedings or otherwise proceed against Guarantor in any jurisdiction or to
serve process in any manner permitted by applicable law.  Guarantor agrees that
a final judgment in any such action or proceeding shall be conclusive and may
be enforced in other jurisdictions by suit on the judgment or in any other
manner provided by law.  THIS GUARANTEE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE APPLICABLE LAWS OF THE PROVINCE OF ALBERTA AND OF CANADA
FROM TIME TO TIME IN EFFECT.

         Section 6.9. Survival.  The representations, covenants and agreements
set forth in this Guarantee shall continue and survive until final termination
of this Guarantee.

         Section 6.10.  Rights Cumulative; Delay Not Waiver.  Any Agent's or
any Bank's exercise of any right, benefit or privilege under any of the Loan
Documents or any other papers or at law or in equity shall not preclude the
concurrent or subsequent exercise of any of any Agent's or any Bank's other
present or future rights, benefits or privileges.  The remedies provided in
this Guarantee are cumulative and not exclusive of any remedies provided by
law, the Loan Documents or any other papers.  No failure by any Agent or any
Bank to exercise, and no delay in exercising, any right under any Loan Document
or any other papers shall operate as a waiver thereof.

         Section 6.11.  Severability.  If any provision of this Guarantee is
held to be illegal, invalid or unenforceable under present or future laws, the
legality, validity and enforceability of the remaining provisions of this
Guarantee shall not be affected thereby, and this Guarantee shall be liberally
construed so as to carry out the intent of the parties to it.

         Section 6.12.  Entire Agreement.  THIS GUARANTEE EMBODIES THE ENTIRE
AGREEMENT AND UNDERSTANDING AMONG GUARANTOR, AGENTS AND BANKS WITH RESPECT TO
ITS SUBJECT MATTER AND SUPERSEDES ALL PRIOR CONFLICTING OR INCONSISTENT
AGREEMENTS, CONSENTS AND UNDERSTANDINGS RELATING TO SUCH SUBJECT MATTER.
GUARANTOR ACKNOWLEDGES AND AGREES THAT THERE IS NO ORAL AGREEMENT AMONG
GUARANTOR,





                                       10
<PAGE>   11

AGENTS AND BANKS WHICH HAS NOT BEEN INCORPORATED IN THIS GUARANTEE.

         Section 6.13.   Usury Not Intended; Saving Provisions.
Notwithstanding any provision to the contrary contained in any Loan Document,
it is expressly provided that in no case or event shall the aggregate of any
amounts accrued or paid pursuant to this Guarantee which under applicable laws
are or may be deemed to constitute interest ever exceed the maximum nonusurious
interest rate permitted by applicable laws of the Province of Alberta or the
applicable laws of Canada, whichever permit the higher rate.  In this
connection, Guarantor, Agents and Banks stipulate and agree that it is their
common and overriding intent to contract in strict compliance with applicable
usury laws.  In furtherance thereof, none of the terms of this Guarantee shall
ever be construed to create a contract to pay, as consideration for the use,
forbearance or detention of money, interest at a rate in excess of the maximum
rate permitted by applicable laws.  No Guarantor shall ever be liable for
interest in excess of the maximum rate permitted by applicable laws.  If, for
any reason whatever, such interest paid or received during the full term of the
applicable indebtedness produces a rate which exceeds the maximum rate
permitted by applicable laws, Agents or Banks, as the case may be, shall credit
against the principal of such indebtedness (or, if such indebtedness shall have
been paid in full, shall refund to the payor of such interest) such portion of
said interest as shall be necessary to cause the interest paid to produce a
rate equal to the maximum rate permitted by applicable laws.  All sums paid or
agreed to be paid to any Agent or any Bank for the use, forbearance or
detention of money shall, to the extent permitted by applicable law, be
amortized, prorated, allocated and spread in equal parts throughout the full
term of the applicable indebtedness, so that the interest rate is uniform
throughout the full term of such indebtedness.  The provisions of this Section
shall control all agreements, whether now or hereafter existing and whether
written or oral, among Guarantor, Agents and Banks.

         Section 6.14.  Acknowledgement of Terms of Credit Agreement Binding
Upon Guarantor.  Guarantor acknowledges and agrees to the covenants,
agreements, representations, warranties and other provisions of the Credit
Agreement which refer to the "Parent".

         THIS GUARANTEE is executed as of the date first above written.


                                        SEAGULL ENERGY CORPORATION


                                        By: ____________________________________
                                                 Robert M. King, 
                                                 Vice President, Corporate 
                                                 Development and Treasurer





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