AMENDED AND RESTATED CREDIT AGREEMENT


                                     Among


                          TESORO PETROLEUM CORPORATION
                                 as the Company


                                      and


                                 BANQUE PARIBAS
         Individually, as an Issuing Bank and as Administrative Agent,


                            THE BANK OF NOVA SCOTIA
                    Individually and as Documentation Agent


                                      and


                             FINANCIAL INSTITUTIONS
                        NOW OR HEREAFTER PARTIES HERETO


                     $150,000,000 Revolving Credit Facility


                                  June 7, 1996



                               TABLE OF CONTENTS


                                   ARTICLE I

                                  DEFINITIONS

    Section 1.01   Definitions . . . . . . . . . . . . . . . . .1
    Section 1.02   Accounting Terms and Determinations . . . . 21
    Section 1.03   Other Definitional Terms. . . . . . . . . . 21

                                   ARTICLE II

                           AMOUNT AND TERMS OF LOANS

    Section 2.01   Commitments . . . . . . . . . . . . . . . . 21
    Section 2.02   Borrowing Requests. . . . . . . . . . . . . 22
    Section 2.03   Letters of Credit . . . . . . . . . . . . . 23
    Section 2.04   Disbursement of Funds . . . . . . . . . . . 27
    Section 2.05   Notes.. . . . . . . . . . . . . . . . . . . 27
    Section 2.06   Interest. . . . . . . . . . . . . . . . . . 28
    Section 2.07   Interest Periods. . . . . . . . . . . . . . 29
    Section 2.08   Repayment of Loans. . . . . . . . . . . . . 29
    Section 2.09   Termination or Reduction of  Revolving
                      Credit Commitments . . . . . . . . . . . 30
    Section 2.10   Prepayments . . . . . . . . . . . . . . . . 30
    Section 2.11   Continuation and Conversion Options . . . . 31
    Section 2.12   Fees. . . . . . . . . . . . . . . . . . . . 32
    Section 2.13   Payments, etc . . . . . . . . . . . . . . . 33
    Section 2.14   Interest Rate Not Ascertainable, etc. . . . 33
    Section 2.15   Illegality. . . . . . . . . . . . . . . . . 34
    Section 2.16   Increased Costs . . . . . . . . . . . . . . 34
    Section 2.17   Change of Lending Office. . . . . . . . . . 36
    Section 2.18   Funding Losses. . . . . . . . . . . . . . . 36
    Section 2.19   Sharing of Payments, etc. . . . . . . . . . 36
    Section 2.20   E&P Borrowing Base. . . . . . . . . . . . . 37
    Section 2.21   Taxes . . . . . . . . . . . . . . . . . . . 38
    Section 2.22   Pro Rata Treatment. . . . . . . . . . . . . 40
    Section 2.23   Disposition of Proceeds . . . . . . . . . . 41
    Section 2.24   Senior Debt . . . . . . . . . . . . . . . . 41

                                  ARTICLE III

            CONDITIONS TO BORROWINGS AND TOPURCHASE, RENEWAL AND RE

    Section 3.01   Closing . . . . . . . . . . . . . . . . . . 41

                                      -i-

    Section 3.02   Conditions Precedent to Initial Loan. . . . 41
    Section 3.03   Conditions Precedent to Each Loan . . . . . 44
    Section 3.04   Recordings. . . . . . . . . . . . . . . . . 44

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

    Section 4.01   Corporate Existence . . . . . . . . . . . . 45
    Section 4.02   Corporate Power and Authorization . . . . . 45
    Section 4.03   Binding Obligations . . . . . . . . . . . . 45
    Section 4.04   No Legal Bar or Resultant Lien. . . . . . . 45
    Section 4.05   No Consent. . . . . . . . . . . . . . . . . 45
    Section 4.06   Financial Information . . . . . . . . . . . 45
    Section 4.07   Investments and Guaranties. . . . . . . . . 46
    Section 4.08   Litigation. . . . . . . . . . . . . . . . . 46
    Section 4.09   Use of Proceeds . . . . . . . . . . . . . . 46
    Section 4.10   Compliance with ERISA . . . . . . . . . . . 46
    Section 4.11   Taxes; Governmental Charges . . . . . . . . 46
    Section 4.12   Titles, etc . . . . . . . . . . . . . . . . 47
    Section 4.13   Defaults. . . . . . . . . . . . . . . . . . 47
    Section 4.14   Casualties; Taking of Properties. . . . . . 47
    Section 4.15   Compliance with the Law . . . . . . . . . . 47
    Section 4.16   No Material Misstatements . . . . . . . . . 47
    Section 4.17   Investment Company Act. . . . . . . . . . . 48
    Section 4.18   Public Utility Holding Company Act. . . . . 48
    Section 4.19   Subsidiaries. . . . . . . . . . . . . . . . 48
    Section 4.20   Insurance . . . . . . . . . . . . . . . . . 48
    Section 4.21   Mortgaged Property. . . . . . . . . . . . . 48
    Section 4.22   Gas Imbalances. . . . . . . . . . . . . . . 48
    Section 4.23   Environmental Matters . . . . . . . . . . . 48

                                   ARTICLE V

                             AFFIRMATIVE COVENANTS

    Section 5.01   Maintenance and Compliance, etc.. . . . . . 50
    Section 5.02   Payment of Taxes and Claims, etc. . . . . . 50
    Section 5.03   Further Assurances. . . . . . . . . . . . . 50
    Section 5.04   Performance of Obligations. . . . . . . . . 51
    Section 5.05   Insurance.. . . . . . . . . . . . . . . . . 51
    Section 5.06   Accounts and Records. . . . . . . . . . . . 51
    Section 5.07   Right of Inspection.. . . . . . . . . . . . 51
    Section 5.08   Operation and Maintenance of Mortgaged
                      Property and Compliance with Leases. . . 52

                                      -ii-

    Section 5.09   Stock of Subsidiaries.. . . . . . . . . . . 52
    Section 5.10   Certain Additional Assurances Regarding
                      Maintenance and Operation of Properties. 52
    Section 5.11   Designation of Subsidiaries as Additional
                      Guarantors . . . . . . . . . . . . . . . 52
    Section 5.12   Minimum Capital Expenditures. . . . . . . . 52
    Section 5.13   Payment of Charters and Tariffs.. . . . . . 52
    Section 5.14   Title Opinions. . . . . . . . . . . . . . . 52
    Section 5.15   Reporting Covenants . . . . . . . . . . . . 52

                                   ARTICLE V

                              INEGATIVE COVENANTS

    Section 6.01   Consolidated Tangible Net Worth.. . . . . . 56
    Section 6.02   Consolidated Current Ratio. . . . . . . . . 56
    Section 6.03   Consolidated Cash Flow Coverage Ratio.. . . 56
    Section 6.04   Consolidated Interest Coverage Ratio. . . . 57
    Section 6.05   Indebtedness. . . . . . . . . . . . . . . . 57
    Section 6.06   Liens.. . . . . . . . . . . . . . . . . . . 59
    Section 6.07   Mergers, Sales, etc.. . . . . . . . . . . . 61
    Section 6.08   Restricted Payments.. . . . . . . . . . . . 61
    Section 6.09   Investments, Loans, etc.. . . . . . . . . . 62
    Section 6.10   Lease Payments. . . . . . . . . . . . . . . 64
    Section 6.11   Sales and Leasebacks. . . . . . . . . . . . 64
    Section 6.12   Nature of Business. . . . . . . . . . . . . 64
    Section 6.13   ERISA Compliance. . . . . . . . . . . . . . 64
    Section 6.14   Sale or Discount of Receivables.. . . . . . 65
    Section 6.15   Negative Pledge Agreements. . . . . . . . . 65
    Section 6.16   Transactions with Affiliates. . . . . . . . 65
    Section 6.17   Unconditional Purchase Obligations. . . . . 66
    Section 6.18   Stock.. . . . . . . . . . . . . . . . . . . 66
    Section 6.19   Non-Recourse Indebtedness . . . . . . . . . 66

                                  ARTICLE VII

                               EVENTS OF DEFAULT

    Section 7.01   Payments. . . . . . . . . . . . . . . . . . 66
    Section 7.02   Covenants Without Notice. . . . . . . . . . 66
    Section 7.03   Other Covenants . . . . . . . . . . . . . . 66
    Section 7.04   Other Financing Document Obligations. . . . 67
    Section 7.05   Representations . . . . . . . . . . . . . . 67
    Section 7.06   Non-Payments of Other Indebtedness. . . . . 67
    Section 7.07   Defaults Under Other Agreements . . . . . . 67

                                     -iii-

    Section 7.08   Bankruptcy. . . . . . . . . . . . . . . . . 67
    Section 7.09   ERISA . . . . . . . . . . . . . . . . . . . 68
    Section 7.10   Money Judgment. . . . . . . . . . . . . . . 68
    Section 7.11   Discontinuance of Business. . . . . . . . . 68
    Section 7.12   Security Instruments. . . . . . . . . . . . 68
    Section 7.13   Change of Control . . . . . . . . . . . . . 68
    Section 7.14   Mandatory Prepayments . . . . . . . . . . . 68
    Section 7.15   Material Adverse Event. . . . . . . . . . . 68

                                  ARTICLE VIII

                            THE ADMINISTRATIVE AGENT

    Section 8.01   Appointment of Administrative Agent . . . . 69
    Section 8.02   Nature of Duties of Administrative Agent
                      and Documentation Agent. . . . . . . . . 69
    Section 8.03   Lack of Reliance on the Administrative
                      Agent and the Documentation Agent. . . . 69
    Section 8.04   Certain Rights of the Administrative Agent. 70
    Section 8.05   Reliance by Administrative Agent. . . . . . 70
    Section 8.06   Indemnification of Administrative Agent
                      and the Documentation Agent. . . . . . . 70
    Section 8.07   The Administrative Agent and Documentation
                      Agent in their Individual Capacity . . . 70
    Section 8.08   Lender as Owner . . . . . . . . . . . . . . 71
    Section 8.09   Successor Administrative Agent. . . . . . . 71

                                   ARTICLE IX

                                 MISCELLANEOUS

    Section 9.01   Notices . . . . . . . . . . . . . . . . . . 71
    Section 9.02   Amendments, etc . . . . . . . . . . . . . . 72
    Section 9.03   No Waiver; Remedies Cumulative. . . . . . . 72
    Section 9.04   Payment of Expenses, Indemnities, etc . . . 72
    Section 9.05   Right of Setoff . . . . . . . . . . . . . . 74
    Section 9.06   Benefit of Agreement. . . . . . . . . . . . 75
    Section 9.07   Assignments and Participations. . . . . . . 75
    Section 9.08   Governing Law; Submission to Jurisdiction;
                      Etc. . . . . . . . . . . . . . . . . . . 77
    Section 9.09   Independent Nature of Lenders' Rights . . . 78
    Section 9.10   Invalidity. . . . . . . . . . . . . . . . . 78
    Section 9.11   Survival of Agreements. . . . . . . . . . . 78
    Section 9.12   Renewal, Extension or Rearrangement . . . . 78
    Section 9.13   Interest. . . . . . . . . . . . . . . . . . 78
    Section 9.14   Taxes, etc. . . . . . . . . . . . . . . . . 79
    Section 9.15   Confidential Information. . . . . . . . . . 79

                                      -iv-

    Section 9.16   Entire Agreement. . . . . . . . . . . . . . 80
    Section 9.17   Attachments . . . . . . . . . . . . . . . . 80
    Section 9.18   Counterparts. . . . . . . . . . . . . . . . 80
    Section 9.19   Survival of Indemnities . . . . . . . . . . 80
    Section 9.20   Headings Descriptive. . . . . . . . . . . . 80
    Section 9.21   Satisfaction Requirement. . . . . . . . . . 80
    Section 9.22   Effectiveness . . . . . . . . . . . . . . . 81
    Section 9.23   Conflict with E&P Mortgage. . . . . . . . . 81
    Section 9.24   Exculpation Provisions. . . . . . . . . . . 81

ANNEXES

Annex I - Commitments
Annex II - Eligible Inventory Valuation


SCHEDULES

Schedule 1.01 - Outstanding Letters of Credit
Schedule 4.05 - Consents
Schedule 4.07 - Investment and Guaranties
Schedule 4.08 - Litigation
Schedule 4.10 - ERISA
Schedule 4.12 - Titles
Schedule 4.13 - Defaults
Schedule 4.20 - Insurance
Schedule 4.22 - Gas Imbalances
Schedule 4.23 - Environmental Matters
Schedule 6.05 - Existing Indebtedness
Schedule 6.06 - Liens
Schedule 6.15 - Negative Pledge Agreements


EXHIBITS

Exhibit A - Form of Revolving Note
Exhibit B - Form of Borrowing Request
Exhibit C - Subsidiaries/Guarantors
Exhibit D - Form of Assignment and Acceptance
Exhibit E - Form of Borrowing Base Report
Exhibit F - Form of Letter to Hydrocarbon Purchasers

                                      -v-

                                CREDIT AGREEMENT


    THIS AMENDED AND RESTATED CREDIT  AGREEMENT  is  made and entered into as of
the 7th day of June,  1996,  among  TESORO  PETROLEUM  CORPORATION,  a  Delaware
corporation  (the  "Company");  BANQUE PARIBAS, individually, as an Issuing Bank
and as Administrative  Agent,  THE  BANK  OF  NOVA  SCOTIA,  individually and as
Documentation Agent, and each of the lenders that is a signatory hereto or which
becomes a party hereto as provided in Section  9.07  (individually,  a  "Lender"
and, collectively, the "Lenders").


                                    RECITALS

    A.   The  Company has requested that the Lenders amend, extend and rearrange
all of the  Existing  Indebtedness  (as  defined  in  Section  1.01) and provide
certain loans to and extensions of credit on behalf of the Company; and

    B.   The Lenders have agreed to amend, extend  and  rearrange  the  Existing
Indebtedness  and  to  make  such  loans and extensions of credit subject to the
terms and conditions of this Agreement.

    C.   In  consideration  of  the   mutual  covenants  and  agreements  herein
contained and of the loans, extensions of  credit  and  commitments  hereinafter
referred  to,  the parties hereto agree to amend and restate the Existing Credit
Agreement (as defined in Section 1.01) as follows:


                                   ARTICLE I

                                  DEFINITIONS

    Section 1.01   Definitions.  As used herein,  the following terms shall have
the meanings herein specified (to be equally applicable to both the singular and
plural forms of the terms defined):

         "Account Borrowing Base Parties" shall mean Tesoro Alaska, KPL,  Tesoro
    Vostok,  Tesoro Coastwide and Tesoro R&M, and "Account Borrowing Base Party"
    shall mean any one of them.

         "Active Facility Amount" shall  mean  $100,000,000 or such other amount
    in excess thereof not to exceed the Aggregate Revolving  Credit  Commitments
    as  the Company may from time to time request in writing pursuant to Section
    2.01(d).

         "Administrative Agent" shall mean Banque  Paribas, acting in the manner
    and to the extent described in Article VIII.

         "Advance Notice" shall mean written or telecopy notice  (or  telephonic
    notice  promptly  confirmed  in  writing),  which  in  each  case  shall  be
    irrevocable,  from  the  Company  to be received by the Administrative Agent
    before 11:00 a.m.  (Houston time), by the number of Business Days in advance
    of  any  borrowing,  conversion,  continuation  or  prepayment  of  any Loan
    pursuant to this Agreement as respectively indicated below:

           (i)     Eurodollar Loans  - 3 Business Days; and

          (ii)     Base Rate Loans  -  same Business Day.

    For the purpose of determining the respectively applicable Loan in the  case
    of  the  conversion  from one type of Loan into another, the Loan into which
    there is to be a  conversion  shall control.  The Administrative Agent, each
    Issuing Bank and each Lender are entitled to rely upon and act upon telecopy
    notice made or purportedly made by  the  Company,  and  the  Company  hereby
    waives  the  right  to  dispute  the  authenticity  and validity of any such
    transaction once the Administrative Agent  or  any Lender has advanced funds
    or the Issuing Bank has issued Letters of Credit, absent manifest error.

         "Affiliate" of any Person shall  mean  any  other  Person  directly  or
    indirectly  controlling,  controlled  by, or under common control with, such
    Person, whether through the ownership  of  voting securities, by contract or
    otherwise.

         "Aggregate Revolving Credit Commitments" shall mean  the  sum  of  each
    Lender's Revolving Credit Commitment.

         "Aggregate  Revolving  Credit  Exposure"  shall  mean  the  sum of each
    Lender's Revolving Credit Exposure.

         "Agreement" shall mean this  Credit Agreement, as amended, supplemented
    or modified from time to time.

         "Alaska Deed of Trust" shall  mean  the  Deed  of  Trust  and  Security
    Agreement  covering the Kenai Refinery executed by Tesoro Alaska in favor of
    TransAlaska Title Insurance Agency, Inc., as trustee, recorded in Book 0441,
    Pages 848  through  873  of  the  Kenai  Recording  District, Third Judicial
    District, State of Alaska, as security for the Lender Indebtedness,  as  the
    same may be amended, modified or supplemented from time to time.

         "Applicable  Margin" shall mean (i) .75% per annum with respect to Base
    Rate Loans, and  (ii)  1.75%  per  annum  with  respect to Eurodollar Loans;
    provided, however, at any time (a) while the Company's senior unsecured debt
    (or implied senior unsecured debt) is rated BB- or better  by  Standard  and
    Poors Corporation or Ba3 or better by Moody's Investors Service, Inc. or (b)
    from  and  after  the  occurrence of the Mandate Event, then the "Applicable
    Margin" shall be (i) .50% per  annum  for  Base Rate Loans and (ii) 1.5% per
    annum for Eurodollar Loans; and, further provided, however, that during  any
    Deficiency  Period,  the "Applicable Margin" as would otherwise be in effect
    shall be increased by 2.0% per annum for both Base Rate Loans and Eurodollar
    Loans.

         Application" shall mean an  "Application  and  Agreement for Letters of
    Credit," or similar instruments or  agreements,  entered  into  between  the
    Company and the Issuing Bank in connection with any Letter of Credit.

         "Assignment  and  Acceptance" shall have the meaning assigned such term
    in Section 9.07(b).

                                      -2-

         "BB Properties" shall mean at any  time  the Oil and Gas Properties and
    other assets of the Company or a Subsidiary of the Company evaluated by  the
    Lenders  and  to  which  the Lenders gave loan value in determining the most
    recent E&P Borrowing Base.

         "Bankruptcy Code" shall have the meaning provided in Section 7.08.

         "Base Rate" shall have the meaning provided in Section 2.06(a).

         "Base Rate Loan" shall mean a Revolving Credit Loan bearing interest at
    the rate provided in Section 2.06(a).

         "Borrowing" shall mean a borrowing pursuant to a Borrowing Request or a
    continuation or a conversion  pursuant  to  Section 2.11 consisting, in each
    case, of the same Type of Loans having, in the case of Eurodollar Loans, the
    same Interest Period (except as otherwise  provided  in  Sections  2.16  and
    2.18) and made previously or being made concurrently by all of the Lenders.

         "Borrowing  Base" shall mean at any time the amount equal to the sum of
    (i) eighty percent (80%) of Eligible  Accounts plus (ii) sixty percent (60%)
    of the Loan Value of Eligible Inventory;  plus  (iii)  one  hundred  percent
    (100%) of the E&P Borrowing Base.

         "Borrowing Base Report" shall mean the report of the Company concerning
    the  amount  of  the  Borrowing  Base,  to  be delivered pursuant to Section
    5.15(h), substantially in the form attached as Exhibit E.

         "Borrowing Request" shall mean  a  request  for a Borrowing pursuant to
    Section 2.02, substantially in the form attached as Exhibit B.

         "BP" shall mean Banque Paribas, in its individual  capacity  or  as  an
    Issuing Bank, as the case may be and not as Administrative Agent.

         "Business  Day"  shall  mean any day excluding Saturday, Sunday and any
    other day on which banks are  required  or  authorized to close in New York,
    New York or Houston, Texas and, if the applicable Business  Day  relates  to
    Eurodollar  Loans,  on  which  trading is carried on by and between banks in
    Dollar deposits in the applicable interbank Eurodollar market.

         "Capital Expenditures" shall mean  capital  expenditures for capital or
    fixed assets, whether by way of acquisition or otherwise.

         "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) real and/or personal property
    which obligations are  required  to  be  classified  and  accounted for as a
    liability for a  capital  lease  on  a  balance  sheet  of  such  Person  in
    accordance with GAAP.

         "Cash  Flow" shall mean, as to any Person, the sum of the net income of
    such Person after taxes for any period plus, to the extent deducted from net
    income, all non-cash  items,  including,  but  not limited to, depreciation,
    depletion  and  impairment,  amortization  of  leasehold  and   intangibles,
    deferred  taxes  and  write-offs  of  exploration  costs and producing lease
    abandonments and write-offs

                                      -3-

    of  original  issue  discount  and  deferred  financing  costs  on  existing
    Indebtedness that has been retired  or replaced by Indebtedness permitted by
    Section 6.05(b), minus, to the extent included in the net income  of  Tesoro
    E&P,  revenues  (net of deferred taxes) attributable to the supersedeas bond
    posted pursuant to the  Memorandum  of  Binding Agreement relating to Lenape
    Resources Corp. v.  Tennessee Gas Pipeline Company, 39 Tex Sup. Ct.  J.  496
    (April  18,  1996),  as  the  same may be amended, supplemented, modified or
    replaced from time to time, provided  that  such revenues may be included in
    the net income of Tesoro E&P at the time of the Collection  Event;  in  each
    case for such period and determined as to such Person.

         "Change  of  Control" shall mean either (i) a change resulting when any
    Unrelated Person  or  any  Unrelated  Persons  acting  together  which would
    constitute a Group together with any Affiliates thereof (in each  case  also
    constituting Unrelated Persons) shall at any time Beneficially Own more than
    40%  of  the  aggregate  voting  power of all classes of Voting Stock of the
    Company.  As used herein (a)  "Beneficially Own" means "beneficially own" as
    defined in Rule 13d-3 of the 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  Securities  Exchange  Act  of 1934, as amended; (c)
    "Unrelated Person" means at any time any Person other than  the  Company  or
    any Subsidiary and other than any trust for any employee benefit plan of the
    Company  or  any  Subsidiary  of  the Company; and (d) "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 or
    (ii) during any consecutive 12  month  period, Continuing Directors cease to
    constitute a majority of the Board of Directors then in office.

         "Closing Date" shall mean the as of date of this Agreement set forth in
    the first paragraph hereof.

         "Code" shall mean the Internal Revenue Code of 1986,  as  amended,  and
    any successor statute.

         "Collection  Event" shall mean the receipt by the Company or Tesoro E&P
    from or on behalf of Tennessee Gas Pipeline Company (or its successor) of at
    least $59,000,000 cash (whether in one or more payments) in payment for past
    tenders, which  funds  the  Company  or  Tesoro  E&P  should previously have
    received under the terms of the gas purchase agreement  with  Tennessee  Gas
    Pipeline Company.

         "Commitment" shall mean, with respect to each Lender, the obligation of
    such  Lender  to  make  loans  to  the Company under Section 2.01, up to the
    maximum amount set forth opposite  such  Lender's  name on Annex I under the
    caption "Revolving Credit Commitment."

         "Company"  shall  mean  Tesoro  Petroleum   Corporation,   a   Delaware
    corporation.

         "Continuing  Directors" shall mean any member of the Board of Directors
    of the Company on  the  Closing  Date,  any  director elected since the date
    thereof in an annual meeting of the

                                      -4-
    stockholders upon the recommendation  of  the  Board  of  Directors  of  the
    Company  and  any  other member of the Board of Directors of the Company who
    will be recommended or  elected  to  succeed  to  a Continuing Director by a
    majority of Continuing Directors who  are  then  members  of  the  Board  of
    Directors of the Company.

         "Consolidating  Statement  Entities"  shall  mean,  for  the purpose of
    identifying  the  Persons  or  groups  of  Persons  for  whom  consolidating
    financial statements shall be prepared, all of the consolidated Subsidiaries
    of the Company reported as a single consolidated group.

         "Consolidated Tangible Net Worth" shall mean, at any time and from time
    to time, the sum of  preferred  or  common  stock not subject to a mandatory
    redemption obligation (other than a mandatory redemption obligation that can
    be satisfied by the tendering of common stock of the Company) as of the date
    of determination, par value of common stock, additional paid-in  capital  of
    common  stock  and  retained  earnings  less  treasury  stock (if any), less
    goodwill, cost in excess of net assets  acquired and all other assets as are
    properly classified as intangible  assets,  all  as  determined  as  to  the
    Company and its Subsidiaries on a consolidated basis.

         "Cover" for Letter of Credit Liabilities shall be effected by paying to
    the  Administrative  Agent in immediately available funds, to be held by the
    Administrative  Agent   in   a   collateral   account   maintained   by  the
    Administrative Agent at its Payment  Office  and  collaterally  assigned  as
    security  pursuant  to the Cash Collateral Account Agreement dated as of the
    Closing Date between the  Company  and  the  Administrative Agent, an amount
    equal to the maximum amount of each applicable Letter  of  Credit  available
    for   drawing   at   any  time.   Such  amount  shall  be  retained  by  the
    Administrative Agent in  such  collateral  account  until  such  time as the
    applicable  Letter  of  Credit  shall  have  expired  and  Reimburse-   ment
    Obligations, if any, with respect thereto shall have been fully satisfied.

         "Cumulative Amount Available for Restricted Payments" shall mean:

              (i)   prior to the occurrence of the Mandate Event the  difference
         of  (a)  the  sum,  since December 31, 1995, of (A) $5,000,000, (B) ten
         percent of consolidated net  income  up  to  $25,000,000 and (C) twenty
         percent of consolidated net income in  excess  of  $25,000,000  of  the
         Company  and  its  Subsidiaries in any calendar year (provided, however
         consolidated net income shall not include any revenues (net of deferred
         taxes) attributable to  the  supersedeas  bond  posted  pursuant to the
         Memorandum of Binding Agreement relating to Lenape Resources  Corp.  v.
         Tennessee  Gas  Pipeline  Company,  39  Tex  Sup. Ct. J. 496 (April 18,
         1996), as the same may  be  amended, supplemented, modified or replaced
         from time to time, provided that such revenues may be included  in  the
         net  income  of Tesoro E&P at the time of the Collection Event) and (b)
         any  amount  previously  paid,  prepaid,  redeemed  or  repurchased  as
         permitted by the terms of clause (ii) and subclause (D) of clause (iii)
         of Section 6.08 since the Closing Date; or

              (ii)  after the occurrence of the Mandate Event, the difference of
         (a) the sum, since December 31,  1995,  of (A) $5,000,000 and (B) fifty
         percent of consolidated net income of the Company and its  Subsidiaries
         in  any  calendar  year  and  (b)  any amount previously paid, prepaid,
         redeemed or repurchased as permitted  by  the  terms of clause (ii) and
         subclause (D) of clause (iii) of Section 6.08 since the Closing Date.

                                      -5-

         "Default" shall mean an Event of Default  or  any  condition  or  event
    which,  with  notice  or lapse of time or both, would constitute an Event of
    Default.

         "Deficiency Period" shall have  the  meaning  assigned  to such term in
    Section 2.10(d).

         "Developed" shall mean Proved Hydrocarbon reserves recoverable  through
    existing wells.

         "Documentary   Letter   of  Credit"  shall  mean  a  letter  of  credit
    denominated in Dollars  issued  pursuant  to  this  Credit Agreement (i) the
    terms of which are in the reasonable judgment of the Issuing Bank  for  such
    letter  of  credit,  standard  in  the  petroleum  industry,  and (ii) which
    supports payment or performance for a single identified purchase or exchange
    of crude oil, condensate and/or other petroleum products.

         "Documentation Agent" shall mean The Bank of Nova Scotia.

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

         "E&P Borrowing Base" shall mean at any time  an  amount  equal  to  the
    amount determined, pursuant to Section 2.20.

         "E&P  Mortgage"  shall  mean the Mortgage, Deed of Trust, Assignment of
    Production, Security Agreement and Financing Statement dated as of April 20,
    1994 granted by Tesoro  Exploration  and  Production  Company, to Stephen H.
    Field, as trustee, recorded in Volume 0692, Page 523 of  the  Real  Property
    Records of Starr County, Texas and Volume 497, Page 340 of the Real Property
    Records  of  Zapata  County,  Texas  granting  a  Lien  on  the  Oil and Gas
    Properties of Tesoro LP, as security for the indebtedness defined therein as
    "Indebtedness", as the same has been  or  may  from time to time be amended,
    supplemented  or  otherwise  modified  and  the  Mortgage  Deed  of   Trust,
    Assignment  of  Production, Security Agreement and Financing Statement dated
    as of the Closing Date  granted  by  Tesoro  LP, to Brian Malone as trustee,
    granting a Lien on the Oil and Gas Properties of Tesoro LP situated  in  the
    Lopeno  Field  and  Tea  Jay Field, as security for the indebtedness defined
    therein as "Indebtedness", as the  same  may  from  time to time be amended,
    supplemented or otherwise modified.

         "EBITDA" shall mean, as to  the  Company  and  its  Subsidiaries  on  a
    consolidated  basis  and,  for  each Rolling Period, the amount equal to net
    income of  the  Company  and  its  Subsidiaries,  less  any  non-cash income
    included in net income to the extent the applicable cash was not received at
    any time during such Rolling Period, plus, to the extent deducted  from  net
    income,   interest   expense,   depreciation,   depletion   and  impairment,
    amortization  of  leasehold   and   intangibles,   other  non-cash  expenses
    (including, but not limited to, write-offs of original  issue  discount  and
    deferred  financing  costs on existing Indebtedness that has been retired or
    replaced by Indebtedness permitted by  Section 6.05(b), and taxes (excluding
    Bolivian taxes paid in  kind),  provided,  that,  gains  or  losses  on  the
    disposition of assets shall not be included in EBITDA.

         "Effective  Date"  shall  mean  the  date  on  which  (i)  each  of the
    conditions precedent set forth in Article  III have been satisfied or waived
    by each of the Lenders, (ii) the conditions to effectiveness  set  forth  in
    Section 9.22 have been satisfied and (iii) the initial Loans have been made,

                                      -6-

    the  Outstanding  Letters of Credit have been assumed, or the initial Letter
    of Credit has been issued.  Subject  to Section 3.01, the Effective Date and
    Closing Date may be the same date.

         "Eligible Account" shall mean at any time the  net  invoice  or  ledger
    amount owing on each account (which shall mean any "account" as such term is
    defined  in Section 9-106 of the UCC and any "chattel paper" as such term is
    defined in Section 9-105(b) of the  UCC) of any Account Borrowing Base Party
    (net of any credit balance, returns, trade discounts, or unbilled amounts or
    retention) for which each  of  the  following  statements  is  accurate  and
    complete  (and  the  Company by including such account in any computation of
    the  Borrowing  Base  shall  be  deemed  to  represent  and  warrant  to the
    Administrative Agent, the Issuing Banks and the  Lenders  the  accuracy  and
    completeness of such statements):

              (a)  Said account is a binding and valid obligation of the obligor
         thereon in full force and effect;

              (b)  Said  account  is  genuine  as  appearing  on  its face or as
         represented  in  the  books  and  records  of  the  applicable  Account
         Borrowing Base Party;

              (c)  Said  account  is  free  from  claims  regarding  rescission,
         cancellation or avoidance, whether by operation of law or otherwise;

              (d)  Payment of said account  is  not  more  than 90 days past the
         invoice date thereof and is less than 60 days past due;

              (e)  Said account is net of  concessions,  offset  (excluding  any
         accounts   payable   offset   supported  by  a  Letter  of  Credit)  or
         understandings with the obligor thereon of any kind;

              (f)  Said account is, and at all  times will be, free and clear of
         all Liens, except  in  favor  of  the  Administrative  Agent,  and  the
         Administrative  Agent has a first priority, perfected security interest
         in such account;

              (g)  Said account is derived from goods sold or leased or services
         rendered to  the  obligor  in  the  ordinary  course  of the applicable
         Account Borrowing  Base  Party's  business  (other  than  the  sale  of
         minerals  or  the  like,  including  oil  and  gas,  at the wellhead or
         minehead);

              (h)  Said account is not (i) carried  on the books of such Account
         Borrowing Base Party  as  an  "exchange  account  receivable"  or  (ii)
         subject  to  an  exchange agreement with another Person except for cash
         exchange account receivables net of any corresponding payables;

              (i)  Said account is not payable by an obligor who is more than 60
         days past due with regard to 20%  or more of the total accounts owed by
         such obligor;

              (j)  The account debtor has sent an invoice within 10  days  after
         said  account  has  been  entered  on  the  financial  records  of  the
         appropriate Account Borrowing Base Party;

                                      -7-

              (k)  All consents, licenses, approvals or  authorizations  of,  or
         registrations or declarations with, any Governmental Authority required
         to  be  obtained,  effected  or given in connection with the execution,
         delivery and  performance  of  said  account  by  each  party obligated
         thereunder have been duly obtained, effected or given and are  in  full
         force and effect;

              (l)  The  obligor  on  said  account (i) is not the subject of any
         bankruptcy or insolvency proceeding, has  not had a trustee or receiver
         appointed for all or a substantial part of its property, has  not  made
         an  assignment  for the benefit of creditors, admitted its inability to
         pay its debts as they mature or suspended its business; and (ii) is not
         affiliated, directly or indirectly,  with  the Company, as a Subsidiary
         or other Affiliate, employee or otherwise;

              (m)  The obligor on  said  account  may  be  the  United States of
         America or any branch or agency thereof; provided that no  Default  has
         occurred  and  is  continuing and the Administrative Agent, in its sole
         discretion, has determined that said account has been properly assigned
         to the  Administrative  Agent  pursuant  to  the  Federal Assignment of
         Claims Act;

              (n)  The goods sold or  leased  or  services rendered resulting in
         the right to payment in connection with said account were sold,  leased
         or  rendered  in  a  state or territory of the United States of America
         (excluding however, such  goods  which  are  sold  or leased for export
         outside of the United States of  America),  which  is  payable  in  the
         United  States  of  America, and the obligor of which is subject to the
         jurisdiction of  federal  or  state  courts  in  the  United  States of
         America, unless said account is backed by a letter of  credit  in  form
         and   substance,   and   issued   by   an  issuer,  acceptable  to  the
         Administrative Agent;

              (o)  If said account, when  added  to all other accounts that are
         obligations of the same obligor, results in a total  sum  that  exceeds
         10%  of  the  total  balance  then due on all of the applicable Account
         Borrowing Base Party's accounts, the  amount  of said account in excess
         of 10% of such total balance then due shall be excluded  from  Eligible
         Accounts;  provided,  however, if the obligor of said account is Texaco
         Inc.,  Exxon  Corporation,  Chevron  U.S.A.  Inc.  Shell,  Amoco, Arco,
         Unocal, Federal Express and Mapco or any wholly owned Subsidiary of any
         one of them, or  other  obligors  approved  for  such  purpose  by  the
         Administrative  Agent  and  Documentation  Agent  in writing (with such
         approval being reported to the  Lenders),  and  so long as such obligor
         maintains a rating of Baa3 or better with  Moody's  Investor  Services,
         Inc.,  or  BBB-  or better with Standard & Poors Corporation, then said
         account shall be included  as  an  Eligible Account; provided, however,
         with respect to any such obligor whose rating drops  below  the  limits
         stated  above, then during such time, said account shall be included as
         an Eligible Account to the extent that the total sum due to any of such
         obligors is  less  than  15%  of  the  total  balance  then  due on all
         applicable Account Borrowing Base Party's accounts, and the  amount  of
         said  account  in excess of 15% of such total balance then due shall be
         excluded from Eligible Accounts; and

              (p)  Said  account  has  not  been  otherwise  determined  by  the
         Administrative  Agent  or  Documentation  Agent,  in  its  good   faith
         discretion,  to  be  unacceptable  in  accordance  with  its  customary
         practices for facilities of this nature.

                                      -8-

         "Eligible  Inventory"  shall  mean, at any time, all inventory (as such
    term is defined in Section 9-109(4)  of  the UCC) of the Inventory Borrowing
    Base Parties, including, without limitation, but without duplication, the In
    Transit Inventory, inventory in the Tesoro Terminals, and inventory  at  the
    KPL  Facility  (as  defined  in  clause  (x)  below)  for  which each of the
    following statements is accurate and  complete (and the Company by including
    such inventory in any computation of the Borrowing Base shall be  deemed  to
    represent  and  warrant  to  the Administrative Agent, each Issuing Bank and
    each Lender the accuracy and completeness of such statements):

              (a)  Said inventory is, and at  all times will be, free and clear
         of all Liens (except for perfected Liens in favor of the Administrative
         Agent and, in the  case  of  In  Transit  Inventory  described  in  the
         definition of In Transit Inventory below, Liens securing the payment of
         tariffs  owed  by  Tesoro  Alaska  to  a  common  carrier  transporting
         feedstocks  or  blendstocks through the Trans-Alaska Pipeline System or
         the KPL Facility, as defined below), and the Administrative Agent has a
         first priority, perfected security interest in such inventory;

              (b)  Said inventory does not  include  capitalized goods which are
         part of inventory of any Inventory Borrowing Base Party;

              (c)  Said inventory  is  located  in  Alaska,  California,  Texas,
         Louisiana  or  Washington,  or  to  the  extent that it qualifies as In
         Transit Inventory, is  located  in  the  territorial  waters of Alaska,
         California, Oregon, Texas, Louisiana, Washington or  British  Columbia,
         Canada (and not in international waters); and

              (d)  Said  inventory  is  not  stored at any terminal other than a
         Tesoro Terminal.

    For purposes of this definition,  "In  Transit Inventory" shall mean, at any
    time, feedstocks, blendstocks or refined products, including asphalt, solely
    owned by an Inventory Borrowing Base Party that are in transit:

              (x)  to  the  Kenai  Refinery  (i)  from Pump Station No. 1 on the
         Trans-Alaska Pipeline System,  including  feedstocks  or blendstocks in
         storage at the Valdez Terminal in Valdez, Alaska, (ii) in a  tanker  or
         barge   located   within  Alaska,  California,  Washington  or  British
         Columbia, Canada or  their  respective  territorial  waters (and not in
         international waters) that has been time  chartered  by  any  Inventory
         Borrowing  Base  Party,  (iii) in or on any pipeline, terminal, dock or
         storage tank of the KPL  in  the  area  of Cook Inlet, Alaska (the "KPL
         Facility"), or (iv) in the Cook Inlet Pipeline Company  System  in  the
         area  of  Cook  Inlet,  Alaska,  including feedstocks or blendstocks in
         storage at the Drift River Terminal in Drift River, Alaska;

              (y)  from the Kenai  Refinery  (i)  in  a  tanker or barge located
         within Alaska, California,  Oregon,  Washington  or  British  Columbia,
         Canada or their respective territorial waters (and not in international
         waters)  that  has  been time chartered by any Inventory Borrowing Base
         Party, (ii) in the Anchorage  Pipeline  owned by Tesoro Alaska Pipeline
         Company (formerly known as the Nikiski Alaska Pipeline),  or  (iii)  in
         the KPL Facility (as defined in Clause (x) above); or

                                      -9-

              (z)  between  Alaska,  California,  Washington,  Texas,  Louisiana
         Oregon  or British Columbia, Canada and in their respective territorial
         waters (and not in international waters)  and is inventory in which the
         Administrative Agent has been granted a first priority  perfected  Lien
         which is in effect at such time.

         "Eligible  Transferee"  shall mean any financial institution which is a
    Lender as of the Effective Date  or  which is a commercial bank, a financial
    institution or an "accredited investor" (as defined in Regulation  D)  which
    makes  loans  in  the  ordinary  course  of  its  business and that makes or
    acquires Loans for its own  account  in  the ordinary course of its business
    and which has capital, surplus and undivided profits  aggregating  at  least
    $250,000,000 (as of the date of its most recent financial statements).

         "Environmental Laws" shall mean any and all laws, statutes, ordinances,
    rules,  regulations, orders, or determinations of any Governmental Authority
    pertaining  to  health  or  the  environment   in  effect  in  any  and  all
    jurisdictions in which the Company or its Subsidiaries are conducting or  at
    any  time  have  conducted business, or where any Property of the Company or
    its Subsidiaries is located, or  where any hazardous substances generated by
    or disposed of by the Company or its Subsidiaries are located, including but
    not limited to the Oil Pollution Act of 1990 ("OPA"), the Clean Air Act,  as
    amended,   the  Comprehensive  Environmental,  Response,  Compensation,  and
    Liability Act of 1980  ("CERCLA"),  as  amended, the Federal Water Pollution
    Control Act, as amended, the Occupational Safety and Health Act of 1970,  as
    amended,  the  Resource  Conservation  and Recovery Act of 1976 ("RCRA"), as
    amended, the Safe  Drinking  Water  Act,  as  amended,  the Toxic Substances
    Control Act, as amended, the Superfund Amendments and Reauthorization Act of
    1986, as amended, and other environmental conservation or  protection  laws.
    The term "oil" shall have the meaning specified in OPA; the terms "hazardous
    substance,"  "release"  and "threatened release" have the meanings specified
    in CERCLA, and the terms  "solid  waste" and "disposal" (or "disposed") have
    the meanings specified in RCRA;  provided,  however,  in  the  event  either
    CERCLA  or  RCRA is amended so as to broaden the meaning of any term defined
    thereby, such broader meaning shall  apply  subsequent to the effective date
    of such amendment, and provided, further, that, to the extent  the  laws  of
    the  state  in  which  any  Property  of  the Company or its Subsidiaries is
    located establish a  meaning  for  "oil,"  "hazardous substance," "release,"
    "solid waste" or "disposal" which is broader than that specified  in  either
    OPA, CERCLA or RCRA, such broader meaning shall apply.

         "ERISA" shall mean the Employee Retirement Income Security Act of 1974,
    as amended, and any successor statute.

         "ERISA  Affiliate"  shall  mean  each trade or business (whether or not
    incorporated) which together with the Company or a Subsidiary of the Company
    would be deemed to  be  a  "single  employer"  within the meaning of Section
    4001(b)(1) of ERISA or Subsections 414(b), (c), (m) or (o) of the Code.

         "ERISA Termination Event" shall mean (i) a "Reportable Event" described
    in Section 4043 of ERISA and the regulations issued thereunder (other than a
    "Reportable Event" not subject to the provision for  30-day  notice  to  the
    PBGC  under  Subsections  .14,  .18,  .19  or  .20  of Part 2615 of the PBGC
    regulations), (ii)  the  withdrawal  of  the  Company,  a  Subsidiary of the
    Company or any ERISA Affiliate from a Plan during a plan year  in  which  it
    was  a  "substantial  employer"  as  defined in Section 4001(a)(2) of ERISA,
    (iii) the filing of a notice of intent to terminate a Plan or the treatment

                                      -10-

    of a Plan amendment as a  termination  under Section 4041 of ERISA, (iv) the
    institution of proceedings to terminate a Plan by the PBGC, or (v) any other
    event or condition which might constitute  grounds  under  Section  4042  of
    ERISA for the termination of, or the appointment of a trustee to administer,
    any Plan.

         "Eurodollar  Loan"  shall mean a Revolving Credit Loan bearing interest
    at the rate provided in Subsection 2.06(b).

         "Eurodollar  Rate"  shall  mean  the  offered  quotation,  if  any,  to
    first-class banks in the Eurodollar  market  by the Administrative Agent for
    Dollar deposits of amounts in funds comparable to the  principal  amount  of
    the  Eurodollar  Loan to which such Eurodollar Rate is to be applicable with
    maturities comparable to the Interest  Period for which such Eurodollar Rate
    will apply as of approximately 10:00 a.m.  (Houston time) two Business  Days
    prior to the commencement of such Interest Period.

         "Event of Default" shall have the meaning provided in Article VII.

         "Exchange  Notes"  shall  mean  the  13% Exchange Notes due December 1,
    2000, issued by the Company.

         "Existing Credit Agreement" shall mean the Credit Agreement dated as of
    April 20, 1994 among the  Company, Texas Commerce Bank National Association,
    as agent, Banque Paribas, as co-agent, and the  lenders  party  thereto,  as
    amended.

         "Existing  Indebtedness"  shall mean the outstanding Indebtedness under
    the Existing Credit Agreement.

         "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 Administrative
    Agent from three Federal  funds  brokers  of recognized standing selected by
    it.

         "Financial Statements" shall mean the consolidated financial statements
    of the Company and its Subsidiaries described  or  referred  to  in  Section
    4.06.

         "Financing  Documents"  shall  mean  this  Agreement,  the  Notes,  the
    Guaranty  Agreement, the Security Instruments, the Applications, the Letters
    of  Credit,  Borrowing  Requests,  Borrowing  Base  Reports,  and  the other
    documents,  instruments  or  agreements  described  in  Subsection  3.02(d),
    together with any  other  document,  instrument  or  agreement  (other  than
    participation, agency or similar agreements among the Lenders or between any
    Lender  and  any  other bank or creditor with respect to any indebtedness or
    obligations of the  Company  hereunder)  now  or  hereafter  entered into in
    connection with the Loans, the Indebtedness or the Mortgaged Properties,  as
    such  documents,  instruments  or  agreements  may  be  amended, modified or
    supplemented from time to time.

                                      -11-

         "Form 1001 Certification" shall  have  the  meaning provided in Section
    2.21(f).

         "Form 4224 Certification" shall have the meaning  provided  in  Section
    2.21(f).

         "Funded  Indebtedness"  shall mean all Indebtedness for borrowed money,
    any Capital  Lease  Obligations  and  any  guaranty  with  respect to Funded
    Indebtedness of another  Person,  excluding  any  intercompany  Indebtedness
    between Consolidating Statement Entities.

         "GAAP"  shall  mean generally accepted accounting principles as applied
    in accordance with Section 1.02.

         "Governmental Authority" shall mean  any (domestic or foreign) federal,
    state, province, county, city, municipal or other political  subdivision  or
    government,  department,  commission,  board,  bureau,  court, agency or any
    other instrumentality of any of  them, which exercises jurisdiction over the
    Company or any of its Property or any Subsidiary of the Company  or  any  of
    such Subsidiary's Property.

         "Governmental   Requirement"   shall   mean  any  law,  statute,  code,
    ordinance, order, rule, regulation, judgment, decree, injunction, franchise,
    permit,  certificate,   license,   authorization   or   other  direction  or
    requirement (including but not limited to any of the foregoing which  relate
    to  Environmental  Laws,  energy  regulations  and  occupational, safety and
    health standards or controls) of any Governmental Authority.

         "Guaranty Agreement"  shall  mean  the  Amended  and  Restated Guaranty
    Agreement dated as of even date herewith executed by the Guarantors.

         "Guarantors" shall mean those Subsidiaries designated as Guarantors  on
    Exhibit   C   and  any  other  Subsidiary  of  the  Company,  other  than  a
    Non-Guarantor Subsidiary, designated as a  Guarantor by (i) the Company with
    the approval of the Administrative Agent or (ii) the  Majority  Lenders,  in
    each case pursuant to Section 5.11.

         "Hedge Agreement" shall mean (i) any Hydrocarbon Swap Agreement or (ii)
    any Interest Rate Swap Agreement.

         "Highest  Lawful  Rate"  shall  mean,  with respect to each Lender, the
    maximum nonusurious interest rate, if any, that  at any time or from time to
    time may be contracted for, taken, reserved,  charged  or  received  on  the
    Notes  or on other Lender Indebtedness, as the case may be, owed to it under
    the law of any jurisdiction whose laws may be mandatorily applicable to such
    Lender notwithstanding other provisions  of  this  Agreement,  or law of the
    United States of America applicable to  such  Lender  and  the  Transactions
    which  would  permit  such  Lender to contract for, charge, take, reserve or
    receive a greater amount of interest than under such jurisdiction's law.

         "Hydrocarbon Interests" shall  mean  all  rights, titles, leasehold and
    other interests and estates in and to oil  and  gas  leases,  oil,  gas  and
    mineral  leases,  or other liquid or gaseous hydrocarbon leases, mineral fee
    interests, overriding royalty  and  royalty  interests, net profit interests
    and production payment interests, including any reserve or residual interest
    of whatever nature.

                                      -12-

         "Hydrocarbon Swap Agreement" shall  mean  any  contract  for  sale  for
    future delivery of Hydrocarbons (whether or not the subject Hydrocarbons are
    to  be  delivered),  hedging  contract,  forward  contract,  swap agreement,
    futures contract or other hydrocarbon pricing protection agreement or option
    with respect to any such transaction, designed to hedge against fluctuations
    in Hydrocarbon prices.

         "Hydrocarbons"  shall  mean  oil,   gas,  casinghead  gas,  condensate,
    distillate, liquid  hydrocarbons,  gaseous  hydrocarbons  and  all  products
    refined therefrom.

         "Improvements"  shall  mean all improvements owned by Tesoro Alaska now
    or hereafter attached to or placed, erected, constructed or developed on the
    Refinery Premises  (excluding  the  Property  leased  pursuant  to the Solar
    Turbine Lease).

         "Indebtedness" of any Person shall mean:

              (i)   all obligations of  such  Person  which,  in accordance with
         GAAP, are or should be shown on the balance sheet of such Person  as  a
         liability  (including,  but  not  limited  to, obligations for borrowed
         money and for the deferred purchase  price of property or services, and
         obligations evidenced by bonds,  debentures,  notes  or  other  similar
         instruments);

              (ii)   all Capital Lease Obligations;

              (iii)  all   guaranties   (direct  or  indirect),  all  contingent
         reimbursement obligations under  undrawn  letters  of  credit and other
         contingent obligations of such Person in respect of, or obligations  to
         purchase  or otherwise acquire or to assure payment of, Indebtedness of
         others;

              (iv)   Indebtedness of others  secured  by  any Lien upon Property
         owned by such Person, whether or not assumed; and

              (v)    obligations of such Person under agreements  of  the  types
         described in the definitions of Hydrocarbon Swap Agreement and Interest
         Rate Swap Agreement.

         "Interest  Period"  shall  mean,  with  respect  to  each  Borrowing of
    Eurodollar Loans, an interest period complying with the terms and provisions
    of Section 2.07.

         "Interest Rate Swap Agreement" shall mean any rate swap, rate cap, rate
    floor,  rate  collar,  forward  rate  agreement  or  other  rate  protection
    agreement or option with respect to  any such transaction, designed to hedge
    against fluctuations in interest rates.

         "Interior  Fuels"  shall  mean  Interior  Fuels  Company,   an   Alaska
    corporation.

         "Inventory  Borrowing  Base  Parties"  shall  mean  Tesoro Alaska, KPL,
    Tesoro Coastwide and Tesoro R&M,  and "Inventory Borrowing Base Party" shall
    mean any one of them.

                                      -13-

         "Issuing Bank" shall mean, for each Letter of Credit, BP or  The  First
    National  Bank  of  Chicago as the issuing bank for such Letter of Credit at
    the option of the Company.

         "Kenai Refinery" shall mean  the  refinery  of Tesoro Alaska located in
    the area of Kenai, Alaska, consisting of the Refinery Premises and the Kenai
    Refinery Related Property.

         "Kenai Refinery Related Property" shall mean (i) all Improvements; (ii)
    all Refinery Personal Property; (iii) all water and water rights  pertaining
    to  the  Refinery Premises; (iv) all building materials and equipment now or
    hereafter delivered to and intended  to  be  installed in or on the Refinery
    Premises or on the Improvements; (v) all plans and  specifications  for  the
    Improvements;  (vi)  all  rights  of Tesoro Alaska (but not its obligations)
    under any contracts relating to  the  Refinery Premises, the Improvements or
    the Refinery Personal Property,  including  without  limitation,  the  Solar
    Turbine  Lease,  but  excluding  contract  rights under contracts containing
    prohibitions against assignment of or the granting of a security interest in
    the rights of a party thereunder; (vii) all rights of Tesoro Alaska (but not
    its obligations) under  any  accounts, construction contracts, architectural
    agreements  and  general  intangibles,  other  than  contract  rights  under
    contracts containing prohibitions against assignment of or the granting of a
    security interest in the  rights  of  a  party  thereunder,  (but  excluding
    trademarks,  trade  names  and  symbols)  arising  from  or by virtue of any
    transactions related  to  the  Refinery  Premises,  Improvements or Refinery
    Personal Property; (viii) all permits, licenses,  franchises,  certificates,
    and  other  rights  and  privileges obtained in connection with the Refinery
    Premises, the Improvements  and  the  Refinery  Personal  Property; (ix) all
    proceeds arising from or by virtue of the sale, lease or  other  disposition
    of  the  Refinery  Premises,  the  Improvements  or  the  Refinery  Personal
    Property;  (x)  all  proceeds  of  each  policy of insurance relating to the
    Refinery Premises, the Improvements or  the Refinery Personal Property; (xi)
    all  proceeds  from  the  taking  of  any  of  the  Refinery  Premises,  the
    Improvements, the Refinery  Personal  Property  or  any  rights  appurtenant
    thereto  by  right of eminent domain or by private or other purchase in lieu
    thereof, including change of grade of  streets, curb cuts or other rights of
    access,  for  any  public  or  quasi-public  use  under   any   Governmental
    Requirement;  (xii) all right, title and interest of Tesoro Alaska in and to
    all streets, roads, public places,  easements and rights-of-way, existing or
    proposed, public or  private,  adjacent  to  or  used  in  connection  with,
    belonging  or pertaining to the Refinery Premises; (xiii) all of the leases,
    rents, royalties, bonuses, issues,  profits,  revenues  or other benefits of
    the Refinery Premises, the Improvements or the Refinery  Personal  Property,
    including  without  limitation,  cash  or  securities  deposited pursuant to
    leases to secure performance by the lessees of their obligations thereunder;
    (xiv) all consumer goods located  in,  on  or about the Refinery Premises or
    the Improvements or used in connection with the use  or  operation  thereof;
    (xv)   all   rights,  hereditaments  and  appurtenances  pertaining  to  the
    foregoing; and (xvi) all other  interests  of  every kind and character that
    Tesoro Alaska now has or at any  time  hereafter  acquires  in  and  to  the
    Refinery  Premises,  Improvements  and  Refinery Personal Property described
    herein and all Property  that  is  used  or  useful in connection therewith,
    including,  without  limitation,  rights  of  ingress  and  egress  and  all
    reversionary rights or interests of  Tesoro  Alaska  with  respect  to  such
    Refinery Premises, Improvements or Refinery Personal Property.

         "KPL" shall mean Kenai Pipe Line Company, a Delaware corporation.

         "Lender  Indebtedness"  shall  mean  any and all amounts owing or to be
    owing by the Company to the  Administrative  Agent, the Issuing Banks or the
    Lenders with respect to or in

                                      -14-

    connection with the Loans, any Letter  of  Credit  Liabilities,  the  Notes,
    Hedge Agreements permitted hereby with any Lenders or their Affiliates, this
    Agreement, or any other Financing Document.

         "Lender"  shall  have  the  meaning  assigned  such term in the opening
    paragraph of this Agreement.

         "Lending Office"  shall  mean  for  each  Lender  the  office specified
    opposite such Lender's name  on  the  signature  pages  hereof,  or  in  the
    Assignment and Acceptance pursuant to which it became a Lender, with respect
    to  each  Type of Loan, or such other office as such Lender may designate in
    writing from time to time to  the  Company and the Administrative Agent with
    respect to such Type of Loan.

         "Letters of Credit" shall  have  the  meaning  assigned  such  term  in
    Section  2.03(a)  and  shall include the Outstanding Letters of Credit which
    are hereby deemed to be issued under this Agreement.

         "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 as of the date of determination plus (ii) the
    aggregate unpaid amount of all  Reimbursement Obligations due and payable as
    of the date of determination in respect of previous drawings made under such
    Letter of Credit.

         "Lien" shall mean any interest in Property securing an obligation  owed
    to,  or  a  claim by, a Person other than the owner of the Property, whether
    such interest is based on the common law, statute or contract, and including
    but not limited to the  lien  or  security interest arising from a mortgage,
    encumbrance, pledge, security agreement, conditional sale or  trust  receipt
    or  a lease, consignment or bailment for security purposes.  The term "Lien"
    shall include reservations, exceptions,  encroachments, easements, rights of
    way, covenants, conditions, restrictions, leases and other title  exceptions
    and  encumbrances  affecting  Property.  For the purposes of this Agreement,
    the Company or any Subsidiary of the Company shall be deemed to be the owner
    of any Property which it has acquired or holds subject to a conditional sale
    agreement, financing lease or other  arrangement  pursuant to which title to
    the Property has been retained  by  or  vested  in  some  other  Person  for
    security purposes.

         "Loan" shall mean a Revolving Credit Loan.

         "Loan  Parties"  shall  mean  the  Company and the Guarantors and "Loan
    Party" shall mean any one of them.

         "Loan Value of Eligible Inventory" shall mean, at a particular date, an
    amount equal to  the  Eligible  Inventory  at  such  date, valued at current
    market as described on Annex II of the Credit Agreement or valued at current
    market as may otherwise be mutually agreed upon from time  to  time  between
    the Company and the Administrative Agent.

         "Majority  Lenders" shall mean at any time (a) prior to the Commitments
    expiring or being terminated in  full,  Lenders  holding at least 66-2/3% of
    the Commitments in effect at such time, or (b) thereafter,  Lenders  holding
    at least 66-2/3% of the then Aggregate Revolving Credit Exposure.

                                      -15-

         "Mandate  Event"  shall mean the issuance of a mandate favorable to the
    Company by the Texas Supreme Court in  the case of Lenape Resources Corp. v.
    Tennessee Gas Pipeline Company, 39 Tex Sup. Ct.  J.  496  (April  18,  1996)
    after  denying the request, if any, for rehearing requested by Tennessee Gas
    Pipeline Company.

         "Margin Stock" shall  have  the  meaning  provided  in Regulation U and
    Regulation X.

         "Material Adverse Effect" shall mean any material and adverse effect on
    the business, financial condition, results of operations or prospects of the
    Company and its Subsidiaries taken as a whole.

         "Maximum Available Amount" shall mean, at any date, an amount equal  to
    the  lesser  of  (a)  the  Borrowing  Base as of such date or (b) the Active
    Facility Amount as of such date.

         "Maximum Revolving Credit Loan Available Amount" shall mean:

              (i)  prior to the occurrence  of  both  the  Mandate Event and the
         Collection Event, at any date, an amount equal to  the  lesser  of  (a)
         fifty  percent  (50%) of the Active Facility Amount as of such date and
         (b) the E&P Borrowing Base as of such date plus $10,000,000; or

              (ii) from and after the occurrence  of  both the Mandate Event and
         the Collection Event, $100,000,000.

         "Mortgaged Property" shall  mean  the  Company's  and  the  Guarantors'
    Properties described in and subject to the Liens, privileges, priorities and
    security  interests  existing  and  to exist under the terms of the Security
    Instruments, including but not limited to the Kenai Refinery and the Oil and
    Gas Properties owned by the Company or the Guarantors which have been or are
    hereafter mortgaged to  the  Administrative  Agent  for  the  benefit of the
    Lenders pursuant to the Security Instruments.

         "Non-Guarantor Subsidiary" shall mean a Subsidiary of the Company  that
    is not indicated as a Guarantor on Exhibit C.

         "Non-Recourse  Indebtedness"  shall  mean  Indebtedness of a Subsidiary
    which is non-recourse to  the  Company  and  the other Subsidiaries on terms
    satisfactory to the Majority Lenders.

         "Notes" shall mean the Revolving Credit Notes.

         "Oil  and  Gas  Properties"  shall  mean  Hydrocarbon  Interests;   the
    properties  now  or hereafter pooled or unitized with Hydrocarbon Interests;
    all  presently  existing  or  future  unitization,  pooling  agreements  and
    declarations of pooled units and  the  units created thereby (including, but
    not limited to, units created under orders, regulations  and  rules  of  any
    Governmental  Authority  having  jurisdiction)  which  may affect all or any
    portion of the  Hydrocarbon  Interests;  all operating agreements, contracts
    and other agreements which relate to any of the Hydrocarbon Interests or the
    production, sale, purchase, exchange or processing of Hydrocarbons  from  or
    attributable  to  such  Hydrocarbon Interests; all Hydrocarbons in and under
    and which may be produced and saved or

                                      -16-
    attributable to the Hydrocarbon Interests, the lands covered thereby and all
    oil in tanks and  all  rents,  issues, profits, proceeds, products, revenues
    and other incomes from or attributable to  the  Hydrocarbon  Interests;  all
    tenements,   hereditaments,   appurtenances   and   Properties   in  anywise
    appertaining, belonging, affixed or incidental to the Hydrocarbon Interests,
    Properties, rights, titles, interests  and  estates described or referred to
    above, including any and all  Property,  real  or  personal,  now  owned  or
    hereafter  acquired  and  situated  upon,  used,  held  for use or useful in
    connection with  the  operating,  working  or  development  of  any  of such
    Hydrocarbon Interests  or  Property  (excluding  drilling  rigs,  automotive
    equipment  or  other personal property which may be on such premises for the
    purpose of  drilling  a  well  or  for  other  similar  temporary  uses) and
    including any and all oil wells, gas wells, injection wells or other  wells,
    buildings,  structures,  fuel  separators,  liquid  extraction plants, plant
    compressors, pumps, pumping units,  field  gathering systems, tanks and tank
    batteries,  fixtures,  valves,  fittings,  machinery  and  parts,   engines,
    boilers,   meters,  apparatus,  equipment,  appliances,  tools,  implements,
    cables,  wires,   towers,   casing,   tubing   and   rods,  surface  leases,
    rights-of-way,  easements  and  servitudes  together  with  all   additions,
    substitutions,  replacements,  accessions  and attachments to any and all of
    the foregoing.

         "Other Taxes" shall have the meaning provided in Subsection 2.21(b).

         "Outstanding Letters of Credit"  shall  mean  the Letters of Credit set
    forth on Schedule 1.01.

         "Payment Office" shall mean the Administrative Agent's  office  located
    at  1200  Smith,  Suite  3100,  Houston,  Texas, 77002; Attention:  Ms. Leah
    Evans-Hughes.

         "PBGC" shall mean  the  Pension  Benefit  Guaranty  Corporation, or any
    successor thereto.

         "Percentage  Share"  shall  mean,  as  to  any  Lender,  the  fraction,
    expressed as a percentage, the numerator of which  is  the  amount  of  such
    Lender's  Revolving  Credit  Commitment  and the denominator of which is the
    amount of the Aggregate Revolving Credit Commitments.

         "Permitted Dividends" shall mean  those  dividends  that the Company is
    permitted to declare and pay pursuant to Section 6.08.

         "Person" shall mean  any  individual,  partnership,  firm,  corporation
    (including,  but  not  limited  to the Company), association, joint venture,
    trust or other entity, or any government or political subdivision or agency,
    department or instrumentality thereof; provided, however, for the purpose of
    the definition of "Change  of  Control,"  "Person"  shall mean a "person" or
    group of persons within the meaning of  Sections  13(d)  and  14(d)  of  the
    Securities Exchange Act of 1934, as amended.

         "Plan"  shall  mean  any  employee  pension benefit plan, as defined in
    Section 3(2)  of  ERISA,  which  (i)  is  currently  or hereafter sponsored,
    maintained or contributed to by  the  Company,  a  Subsidiary  or  an  ERISA
    Affiliate,  or  (ii) was at any time during the six calendar years preceding
    the date of this Agreement  sponsored,  maintained  or contributed to by the
    Company, a Subsidiary or an ERISA Affiliate.

         "Prime  Rate"  shall  mean  the  rate  which  the  Documentation  Agent
    announces from time to time as  its  prime  rate.   Without  notice  to  the
    Company  or any other Person, the Prime Rate shall change automatically from
    time to time as and in the amount by which such prime rate shall

                                      -17-

    fluctuate.  The Prime Rate  is  a  reference  rate  and does not necessarily
    represent the lowest or best rate actually charged  to  any  customer.   The
    Documentation  Agent  may  make  commercial loans or other loans at rates of
    interest at, above or below the Prime Rate.

         "Property" shall mean any interest  in  any  kind of property or asset,
    whether real, personal or mixed, or tangible or intangible.

         "Proved"  shall  mean  Hydrocarbon  reserves   which   geological   and
    engineering  data  demonstrate  with reasonable certainty to be economically
    recoverable in future years with present operating methods and expenses.

         "Proved Undeveloped Hydrocarbon Reserves" shall mean Proved Hydrocarbon
    reserves which are not Developed.

         "Quarterly  Dates"  shall  mean  the  last  day  of  each  March, June,
    September, and December, in each year, the first of which shall be June  30,
    1996;  provided,  however,  that if any such day is not a Business Day, such
    Quarterly Date shall be the next succeeding Business Day.

         "Refinery  Personal  Property"  shall  mean  all  equipment,  fixtures,
    furnishings, inventory and articles  of  personal  property of Tesoro Alaska
    (excluding from the foregoing the Property  leased  pursuant  to  the  Solar
    Turbine  Lease)  now  or  hereafter  attached  to  or  used  in or about the
    Improvements  or  that  are  necessary   or  useful  for  the  complete  and
    comfortable use and occupancy of the Improvements for the purposes for which
    they were or are to be attached, placed, erected, constructed or  developed,
    or  which  are  or  may  be used in or related to the planning, development,
    financing  or  operation  of  the  Improvements,  and  all  renewals  of  or
    replacements or substitutions for any  of  the foregoing, whether or not the
    same are or shall be attached to the Refinery Premises or the Improvements.

         "Refinery Premises" shall mean the real property owned by Tesoro Alaska
    described on Exhibit A attached to the Alaska Deed of Trust.

         "Register" shall mean the register  maintained  by  the  Administrative
    Agent at its Payment Office showing the name and address of each Lender, its
    Commitment,  and the principal amount of the Loans owing to each Lender from
    time to time.

         "Regulation D", "Regulation U" and "Regulation X" shall mean Regulation
    D, Regulation U, and Regulation  X,  respectively, of the Board of Governors
    of the Federal Reserve System as  from  time  to  time  in  effect  and  any
    successor thereto.

         "Reimbursement Obligations" shall mean, at any date, the obligations of
    the  Company  then  outstanding  in  respect  of  the  Letters of Credit, to
    reimburse the Administrative Agent for  the  account of the Issuing Bank for
    the amount paid by the Issuing Bank in respect of  any  drawings  under  the
    Letters of Credit.

         "Reserve   Report"   shall  mean  an  engineering  report  meeting  the
    requirements  set  forth  in   Subsection   5.15(e)  (and  as  to  scheduled
    redeterminations, provided on the dates set forth in  such  Subsection)  and
    such  other  reports,  data and supplemental information as may from time to
    time be

                                      -18-

    reasonably requested by  the  Administrative  Agent  in  connection with any
    redetermination of the E&P Borrowing Base.

         "Responsible Officer" shall mean the Chief Executive Officer, the Chief
    Financial Officer, the Treasurer,  the  Controller,  the  Secretary  or  the
    Assistant Treasurer in each case of the Company.

         "Revolving Credit Commitment" shall mean for any Lender, the amount set
    forth  opposite  such  Lender's name on Annex I under the caption "Revolving
    Credit Commitment", as such amount  may  be reduced pursuant to Section 2.09
    or otherwise from time to time modified pursuant to Section 9.07(b).

         "Revolving Credit Exposure" shall mean, at any  time  and  as  to  each
    Lender,  the  sum  of  (a)  the  aggregate principal amount of the Revolving
    Credit Loans made by such  Lender  as  of  such  date plus (b) such Lender's
    Percentage Share of the aggregate amount of all Letter of Credit Liabilities
    as of such date.

         "Revolving Credit Loan" shall have the meaning provided  in  Subsection
    2.01(a);  the  Revolving Credit Loans shall not include any Letter of Credit
    Liabilities.

         "Revolving Credit Maturity Date"  shall  mean  June 30, 1999; provided,
    however, upon the occurrence of the Mandate Event, it shall mean  April  30,
    2000.

         "Revolving  Credit  Note"  shall  mean a promissory note of the Company
    described in Section 2.05(a) payable  to  any Lender and being substantially
    in the form of Exhibit A,  evidencing  the  aggregate  Indebtedness  of  the
    Company  to  such  Lender resulting from Revolving Credit Loans made by such
    Lender.

         "Rolling Period" shall mean for each calendar quarter, such quarter and
    the three preceding calendar quarters.

         "Scheduled Redetermination Date"  shall  have  the  meaning assigned to
    such term in Section 2.20(d).

         "Scotiabank" shall mean The Bank of  Nova  Scotia,  in  its  individual
    capacity and not as Documentation Agent.

         "Security   Instruments"  shall  mean  the  agreements  or  instruments
    described or referred to  in  Subsections  3.02(d)(ii) through (vii) and any
    and all other agreements  or  instruments  now  or  hereafter  executed  and
    delivered  by the Company, any Subsidiary of the Company or any other Person
    as security for the  payment  or  performance  of the Lender Indebtedness or
    previously executed in connection with the Existing Indebtedness.

         "Simple Majority Lenders" shall mean at  any  time  (a)  prior  to  the
    Commitments  expiring  or being terminated in full, Lenders holding at least
    51% of the Commitments in  effect  at  such time, or (b) thereafter, Lenders
    holding at least 51% of the then Aggregate Revolving Credit Exposure.

                                      -19-

         "Solar Turbine Lease" shall mean that certain Lease Agreement dated  as
    of  October  1,  1987,  from  Solar Turbines Incorporated, as lessor, to the
    Company, as lessee.

         "Standby Letter of Credit" shall mean a letter of credit denominated in
    Dollars (i) the terms of which are in the reasonable judgment of the Issuing
    Bank for such Letter  of  Credit  standard  in  the petroleum industry, (ii)
    which  is  used  in  lieu  or  in  support  of  performance  guarantees   or
    performance, surety or other similar bonds (but expressly excluding stay and
    appeal  bonds)  arising  in  the ordinary course of business, (iii) which is
    used in lieu or  in  support  of  stay  or  appeal  bonds; provided all such
    letters of credit used in lieu or in support of stay or appeal  bonds  shall
    not  exceed  $5,000,000  in  aggregate  amount at any time outstanding, (iv)
    which supports the payment  of  insurance  premiums for reasonably necessary
    casualty insurance carried  by  the  Company  or  any  of  its  consolidated
    Subsidiaries,  or  (v)  which supports payment or performance for identified
    purchases or exchanges of crude oil, condensate and/or petroleum products.

         "Subordinated Debentures" shall mean  the  12 % Subordinated Debentures
    due March 15, 2001, issued by the Company.

         "Subsidiary" of any Person shall mean (a)  a  corporation  of  which  a
    majority  of  the  outstanding shares of stock of each class having ordinary
    voting power is owned by such  Person,  by  one or more Subsidiaries of such
    Person, or by such Person and one or more of its Subsidiaries and (b) Tesoro
    LP.

         "TAPL"  shall  mean  Tesoro  Alaska  Pipeline   Company,   a   Delaware
    corporation.

         "Taxes" shall have the meaning provided in Subsection 2.21(a).

         "Tesoro  Alaska" shall mean Tesoro Alaska Petroleum Company, a Delaware
    corporation.

         "Tesoro Bolivia" shall mean  Tesoro  Bolivia Petroleum Company, a Texas
    corporation.

         "Tesoro Coastwide" shall mean collectively, Tesoro  Coastwide  Services
    Company, a Delaware corporation and Coastwide Marine Services, Inc., a Texas
    corporation.

         "Tesoro  E&P"  shall  mean  Tesoro  Exploration and Production Company,
    Tesoro LP and Tesoro Gas Resources Company, Inc., a Delaware corporation, as
    a single consolidated group.

         "Tesoro  Environmental"  shall   mean  Tesoro  Environmental  Resources
    Company, a Delaware corporation.

         "Tesoro LP" shall mean Tesoro E&P Company,  L.P.,  a  Delaware  limited
    partnership.

         "Tesoro  Northstore"  shall  mean  Tesoro Northstore Company, an Alaska
    corporation.

         "Tesoro R&M" shall mean Tesoro  Refining, Marketing & Supply Company, a
    Delaware corporation.

                                      -20-

         "Tesoro Terminals" shall mean the Vancouver  Terminal  located  in  the
    area  of  Vancouver, Washington, the Sacramento Terminal located in the area
    of Sacramento, California,  the  Stockton  Terminal  located  in the area of
    Stockton, California, the Port Hueneme Terminal located in the area of  Port
    Hueneme,  California  and  such  other  terminals which Tesoro Alaska or any
    other Inventory Borrowing Base Party owns or has possession of pursuant to a
    long-term lease.

         "Tesoro  Vostok"  shall   mean   Tesoro   Vostok  Company,  a  Delaware
    corporation.

         "Transactions"  shall  mean  the  transactions  provided  for  in   and
    contemplated by this Agreement and the other Financing Documents.

         "Type" of Loan shall mean a Base Rate Loan or Eurodollar Loan.

         "UCC"  shall  mean  the Uniform Commercial Code as from time to time in
    effect in the State of Texas  or,  where applicable as to specific Mortgaged
    Property, any other relevant state.

    Section  1.02   Accounting  Terms  and  Determinations.   Unless   otherwise
defined or specified herein, all accounting terms shall be construed herein, all
accounting  determinations  hereunder  shall  be  made, all financial statements
required to be delivered hereunder  shall  be prepared and all financial records
shall be maintained in accordance with GAAP applied on a basis  consistent  with
the financial statements referred to in Subsection 4.06(a).

    Section  1.03   Other  Definitional Terms.  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  any  particular  provision  of  this
Agreement,  and  article,  section, schedule, exhibit and like references are to
this Agreement unless otherwise specified.


                                   ARTICLE II

                           AMOUNT AND TERMS OF LOANS

    Section 2.01   Commitments.

         (a)  Loans.  Subject to and  upon  the  terms and conditions herein set
    forth, each Lender severally  agrees  on  any  Business  Day  prior  to  the
    Revolving  Credit  Maturity  Date,  to  make  Revolving Credit Loans (each a
    "Revolving Credit Loan") to the Company.

         (b)  Types of Loans.  The  Revolving  Credit Loans made pursuant hereto
    by each Lender shall, at the option of the  Company,  be  either  Base  Rate
    Loans  or  Eurodollar  Loans  and  may be continued or converted pursuant to
    Section 2.11,  provided  that,  except  as  otherwise  specifically provided
    herein, all Loans made pursuant to the same Borrowing shall be of  the  same
    Type.

         (c)  Revolving  Credit  Commitments.   Each  Lender's  Revolving Credit
    Exposure shall not exceed at  any  one time its Revolving Credit Commitment;
    provided, however, that the Aggregate Revolving Credit Exposure at  any  one
    time  outstanding shall not exceed the Maximum Available Amount in effect at
    such time; and, provided, further, the aggregate principal amount of all

                                      -21-

    Revolving Credit Loans at  any  one  time  outstanding  shall not exceed the
    Maximum Revolving Credit Loan Available  Amount  in  effect  at  such  time.
    There  may be more than one Borrowing with respect to Revolving Credit Loans
    on any day.  Within the foregoing  limits  and subject to the conditions set
    out in Article III, the Company may obtain Borrowings  of  Revolving  Credit
    Loans,  repay  or  prepay  such  Revolving  Credit  Loans, and reborrow such
    Revolving Credit Loans.

         (d)  Active Facility Amount.  The  Company  may  from  time to time, by
    written notice to the  Administrative  Agent,  the  Issuing  Bank  and  each
    Lender,  designate  the  Active  Facility  Amount as any amount (in integral
    multiples of $1,000,000) not less than $100,000,000 and not in excess of the
    Aggregate Revolving Credit Commitments.  As  of the Closing Date, the Active
    Facility Amount shall be $100,000,000  until  such  time  as  a  new  Active
    Facility Amount is designated pursuant to the terms of this Section.

         (e)  Amounts  of  Borrowings,  etc.   The aggregate principal amount of
    each Borrowing (i) of Eurodollar Loans shall be not less than $5,000,000 and
    shall be in an integral multiple of  $1,000,000, and (ii) of Base Rate Loans
    hereunder shall be not less than $1,000,000 and  shall  be  in  an  integral
    multiple  of  $100,000,  except that any Borrowing of Revolving Credit Loans
    that are Base Rate  Loans  may  be  in  the  aggregate  amount of the unused
    Maximum Revolving Credit Loan Amount in effect at such time.  Borrowings  of
    more  than  one Type may be outstanding at the same time; provided, however,
    that the Company shall not  be  entitled  to  request any Borrowing that, if
    made, would result in an aggregate of more than four separate Borrowings  of
    Eurodollar  Loans  being  outstanding  at any one time.  For purposes of the
    foregoing,  Borrowings  having  different  Interest  Periods,  regardless of
    whether they commence  on  the  same  date,  shall  be  considered  separate
    Borrowings.

    Section 2.02   Borrowing Requests.

         (a)  Borrowing  Requests.   Whenever  the  Company  desires  to  make a
    Borrowing hereunder, it shall give Advance Notice in the form of a Borrowing
    Request, specifying, subject  to  the  provisions  hereof, (i) the aggregate
    principal amount of the Loans to be made pursuant to  such  Borrowing,  (ii)
    the  date  of  Borrowing  (which shall be a Business Day), (iii) whether the
    Loans being made pursuant to  such  Borrowing  are  to be Base Rate Loans or
    Eurodollar Loans, and (iv) in the case of  Eurodollar  Loans,  the  Interest
    Period to be applicable thereto.

         (b)  Notice  by  Administrative  Agent.  The Administrative Agent shall
    promptly give each Lender telecopy or telephonic notice (and, in the case of
    telephonic notices, confirmed by  telecopy  or  otherwise in writing) of the
    proposed Borrowing, of such Lender's proportionate share thereof and of  the
    other  matters  covered  by the Advance Notice.  Without in any way limiting
    the Company's obligation to  confirm  in  writing any telephonic notice, the
    Administrative Agent may act without liability upon the basis of  telephonic
    notice  believed  by  the  Administrative Agent in good faith to be from the
    Company prior to receipt of  written  confirmation.   In each such case, the
    Company hereby waives the right to dispute the Administrative Agent's record
    of the terms of such telephonic notice, absent manifest error.

                                      -22-

    Section 2.03   Letters of Credit.

         (a)  Issuance  of  Letters  of  Credit.   Subject  to  the  terms   and
    conditions  hereof,  the  Company  shall  have  the  right,  in  addition to
    Revolving  Credit  Loans  provided  for  in  Section  2.01,  to  utilize the
    Revolving Credit Commitments from time to time prior to the Revolving Credit
    Maturity Date by obtaining the issuance of  either  Documentary  Letters  of
    Credit or Standby Letters of Credit for the account of any Loan Party by the
    Issuing  Bank  if  the Company shall so request in the notice referred to in
    Subsection 2.03(b)(i) (such letters of credit being collectively referred to
    as the "Letters of Credit"); provided, however, that the Aggregate Revolving
    Credit Exposure at any  one  time  outstanding  shall not exceed the Maximum
    Available Amount in effect at such time.   The  Letters  of  Credit  may  be
    issued to support the obligations of the Company or any of its Subsidiaries.
    Upon  the date of the issuance of a Letter of Credit, the applicable Issuing
    Bank shall be deemed, without  further  action  by any party hereto, to have
    sold to each Lender, and each Lender shall be deemed, without further action
    by  any  party  hereto,  to  have  purchased  from  the  Issuing   Bank,   a
    participation,  to  the  extent  of  such Lender's Percentage Share, 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 year from date of issuance (except for Letters of Credit issued  to
    support  performance  bonds  on behalf of Tesoro Bolivia), provided that any
    Letter of Credit having an  expiry  date after the Revolving Credit Maturity
    Date 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 each of the
    Administrative  Agent  and  the  Issuing  Bank  in  their  sole  discretion,
    provided, further, that, subject  to  the immediately preceding proviso, any
    Letter of Credit may give the beneficiary thereof the  right  to  draw  such
    Letter  of  Credit unless the expiry date thereof is extended for periods of
    up to one year per extension.  The Company and the Lenders agree that, as of
    the Effective Date, the Outstanding Letters of Credit shall for all purposes
    of this Agreement  be  deemed  to  be  Letters  of  Credit  issued under and
    pursuant to the terms of this Agreement.

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

         (i)  The  Company  shall  give the Administrative Agent and the Issuing
    Bank at least one Business  Days'  prior notice (effective upon receipt), or
    in each case, such shorter period as may be agreed to by the  Issuing  Bank,
    specifying  the date such Letter of Credit is to be issued (which shall be a
    Business Day) and the Issuing Bank  and  describing:  (A) the face amount of
    the Letter of Credit, (B) the expiration date of the Letter of  Credit,  (C)
    the  name  and  address  of  the beneficiary, (D) information concerning the
    transaction proposed  to  be  supported  by  such  Letter  of  Credit as the
    Administrative Agent or the Issuing Bank may reasonably  request,  (E)  such
    other  information  and  documents  relating  to the Letter of Credit as the
    Administrative Agent or the Issuing  Bank  may reasonably request, and (F) a
    precise description of documents and the verbatim text of any certificate to
    be presented by the beneficiary, which, if presented  prior  to  the  expiry
    date of the Letter of Credit, would require the Issuing Bank to make payment
    under  the  Letter  of  Credit;  provided  that  the  Issuing  Bank,  in its
    reasonable judgment, may require changes in such documents and certificates;
    and provided further that the  Issuing  Bank  shall not be required to issue
    any Letter of Credit that on its terms requires payment thereunder prior  to
    the  next  Business  Day  following  receipt  by  the  Issuing  Bank of such
    documents and certificates.  Each  such  notice  shall be accompanied by the
    Issuing Bank's Application and by a certificate executed  by  a  Responsible
    Officer  setting  forth calculations evidencing availability for such Letter
    of Credit pursuant to

                                      -23-

    Subsection 2.03(b)(ii) and stating that all  conditions  precedent  to  such
    issuance  have  been  satisfied.  Each Letter of Credit shall, to the extent
    not  inconsistent  with  the   express   terms   hereof  or  the  applicable
    Application, be subject to the Uniform Customs and Practice for  Documentary
    Credits  (1993  Revision), International Chamber of Commerce Publication No.
    500 (together with any subsequent  revisions  thereof approved by a Congress
    of the International Chamber of Commerce  and  adhered  to  by  the  Issuing
    Lender,  the  "UCP"),  and  shall, as to matters not governed by the UCP, be
    governed by, and construed and  interpreted  in accordance with, the laws of
    the State of Texas.  In determining whether to pay any Letter of Credit, the
    Issuing Bank shall be responsible only to use reasonable care  to  determine
    that  the  documents  and  certificates  required to be delivered under that
    Letter of Credit have been delivered and that they comply on their face with
    the requirements of that Letter of Credit.

         (ii)  No Letter of Credit may be  issued if after giving effect thereto
    the Aggregate Revolving Credit Exposure would exceed the  Maximum  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 have
    been terminated, the Revolving Credit Commitment of  each  Lender  shall  be
    deemed  to  be  utilized  for all purposes hereof in an amount equal to such
    Lender's Percentage Share of the amount  of the Letter of Credit Liabilities
    related to such Letter of Credit.

         (iii)  Upon receipt from the beneficiary of any Letter of Credit of any
    demand for payment thereunder, the Issuing Bank shall  promptly  notify  the
    Company  and  the  Administrative  Agent  of  such demand (provided that the
    failure of  an  Issuing  Bank  to  give  such  notice  shall  not affect the
    Reimbursement Obligations of the Company hereunder) and  the  Company  shall
    immediately,  and  in  any  event  no later than 11:00 a.m.  (Houston, Texas
    time) on the date of  such  drawing,  reimburse the Administrative Agent for
    the account of the Issuing Bank for any amount paid by the Issuing Bank upon
    any drawing under any Letter of Credit, without presentment, demand, protest
    or other formalities of any kind in an amount, in same day funds,  equal  to
    the  amount  of  such  drawing.  Unless prior to 11:00 a.m.  (Houston, Texas
    time) on the date of  such  drawing,  the Company shall have either notified
    the Issuing Bank and the Administrative Agent that the  Company  intends  to
    reimburse  the  Administrative Agent for the account of the Issuing Bank for
    the amount of such drawing with funds other than the proceeds of a Revolving
    Credit Loan or delivered to the Administrative Agent a Borrowing Request for
    Revolving Credit Loans in an amount  equal to such drawing, the Company will
    be deemed to have given a Borrowing  Request  to  the  Administrative  Agent
    requesting  that the Lenders make Revolving Credit Loans which shall be Base
    Rate Loans on the date on which  such  drawing is honored in an amount equal
    to the amount of such drawing.  Such Loans shall be subject to  satisfaction
    of  the  conditions  in  Article  III  and to existence of Maximum Revolving
    Credit Loan Available  Amount.   Subject  to  the  preceding sentence, if so
    requested by the Administrative Agent, the Lenders shall,  on  the  date  of
    such  drawing,  make  such Revolving Credit Loans in an amount equal to such
    Lender's Percentage Share of such  drawing,  the  proceeds of which shall be
    applied directly by the Administrative Agent to reimburse the  Issuing  Bank
    for the amount of such drawing.

         (iv)  If the Company fails to reimburse the Issuing Bank as provided in
    clause   (iii)   above,   the   Issuing   Bank  shall  promptly  notify  the
    Administrative Agent and the  Administrative  Agent shall notify each Lender
    of the unreimbursed amount of such drawing and of such  Lender's  respective
    participation  therein based on such Lender's Percentage Share.  Each Lender
    will pay to  the  Administrative  Agent  for  the  account of the applicable
    Issuing Bank on the date of such notice an

                                      -24-

    amount equal to such Lender's Percentage Share of such unreimbursed  drawing
    (or,  if such notice is made after 11:00 a.m.  (Houston, Texas time) on such
    date, on the next succeeding  Business  Day).   If  any Lender fails to make
    available to the Issuing Bank the amount of such Lender's  participation  in
    such  Letter  of  Credit  as  provided in this clause (iv), the Issuing Bank
    shall be entitled to recover such amount on demand from such Lender together
    with interest at the Federal Funds  Rate for one Business Day and thereafter
    at the Base Rate.  Nothing in this clause (iv) shall be deemed to  prejudice
    the  right  of  any Lender to recover from the Issuing Bank any amounts made
    available by such Lender to the Issuing Bank pursuant to this clause (iv) if
    it is determined by a court  of competent jurisdiction that the payment with
    respect to a Letter of Credit by the Issuing  Bank  was  wrongful  and  such
    wrongful payment was the result of gross negligence or willful misconduct on
    the  part  of  the  Issuing  Bank.   The  Issuing  Bank  shall  pay  to  the
    Administrative  Agent  and  the  Administrative  Agent  to  each Lender such
    Lender's Percentage Share  of  all  amounts  received  from  the Company for
    payment, in whole or in part, of the Reimbursement Obligation in respect  of
    any Letter of Credit, but only to the extent such Lender has made payment to
    the Issuing Bank in respect of such Letter of Credit pursuant to this clause
    (iv).

         (v)  The  issuance  by the Issuing Bank of each Letter of Credit shall,
    in addition to the conditions precedent set forth in Article III, be subject
    to the conditions precedent that such Letter of Credit shall be in such form
    and contain such terms as  shall  be  reasonably satisfactory to the Issuing
    Bank, and that the Company shall have  executed  and  delivered  such  other
    instruments  and agreements relating to such Letter of Credit as the Issuing
    Bank shall have reasonably requested and  that are not inconsistent with the
    terms of this Agreement including the Issuing Bank's  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.

         (vi)  As  between the Company and the Issuing Bank, the Company assumes
    all risks of the acts and  omissions  of  or misuse of the Letters of Credit
    issued by the Issuing Bank by the respective beneficiaries of  such  Letters
    of  Credit.   In  furtherance  and  not  in limitation of the foregoing, the
    Issuing  Bank  shall  not  be  responsible:   (A)  for  the  form, validity,
    sufficiency, accuracy, genuineness or legal effect of any document submitted
    by any Person in connection with the application for  or  issuance  of  such
    Letters  of  Credit,  even  if  it  should in fact prove to be in any or all
    respects invalid, insufficient,  inaccurate,  fraudulent  or forged; (B) for
    the validity or sufficiency of any instrument transferring or  assigning  or
    purporting  to transfer or assign any such Letter of Credit or the rights or
    benefits thereunder or proceeds  thereof,  in  whole  or  in part, which may
    prove to be invalid or ineffective for any reason; (C) for  failure  of  the
    beneficiary  of  any  such  Letter of Credit to comply fully with conditions
    required in order to draw upon  such  Letter of Credit, which failure is not
    the result of gross negligence or willful misconduct of the Issuing Bank  as
    determined  by a court of competent jurisdiction; (D) for errors, omissions,
    interruptions or delays  in  transmission  or  delivery  of any messages, by
    mail, cable, telegraph, telex or otherwise,  whether  or  not  they  are  in
    cipher;  (E)  for  errors  in interpretation of technical terms; (F) for any
    loss or delay in the transmission  or  otherwise of any document required in
    order to make a drawing under any such Letter of Credit or of  the  proceeds
    thereof; (G) for the misapplication by the beneficiary of any such Letter of
    Credit  of  the proceeds of any drawing under such Letter of Credit; and (H)
    for any consequences arising from

                                      -25-

    causes  beyond  the  control  of  the  Issuing  Bank,   including,   without
    limitation,  the  actions  of any governmental authority.  None of the above
    shall affect, impair, or prevent  the  vesting  of any of the Issuing Bank's
    rights or  powers  hereunder.   Notwithstanding  anything  to  the  contrary
    contained  in  this  clause  (vi),  the  Company shall have no obligation to
    indemnify an Issuing  Bank  in  respect  of  any  liability  incurred by the
    Issuing  Bank  arising  solely  out  of  the  gross  negligence  or  willful
    misconduct of the Issuing Bank,  as  determined  by  a  court  of  competent
    jurisdiction.

         (vii)  The Issuing Bank will send to the Company and the Administrative
    Agent  immediately  upon  issuance  of any Letter of Credit, or an amendment
    thereto, a  true  and  complete  copy  of  such  Letter  of  Credit, or such
    amendment thereto.  Upon issuance of any Letter of Credit  or  an  amendment
    thereto,  the  Administrative Agent shall promptly notify each Lender of the
    terms of such Letter of  Credit  or  amendment thereto, the Issuing Bank for
    such Letter of Credit or amendment thereto, and of such Lender's  Percentage
    Share  of  the amount of such Letter of Credit or amendment thereto, and the
    Administrative Agent shall provide to each  Lender  a copy of such Letter of
    Credit or such amendment thereto.  Upon cancellation or termination  of  any
    Letter  of Credit, the Issuing Bank shall promptly notify the Administrative
    Agent and the  Company,  and  the  Administrative  Agent  will then promptly
    notify each Lender, of such cancellation or termination.

         (viii)  The obligation of the Company to reimburse  each  Issuing  Bank
    for Reimbursement Obligations with regard to the Letters of Credit issued by
    it  and  the obligations of Lenders under clause (iv) shall be unconditional
    and irrevocable and shall be paid  strictly  in accordance with the terms of
    this Agreement and under all circumstances  including,  without  limitation,
    the following circumstances:

              (A)  any  lack  of  validity  or  enforceability  of any Letter of
    Credit;

              (B)  the existence of any  claim,  set-off, defense or other right
    that the Company  may  have  at  any  time  against  a  beneficiary  or  any
    transferee  of  any  Letter  of  Credit  (or  any  Persons for whom any such
    transferee may be  acting),  any  Lender  or  any  other  Person, whether in
    connection with this Agreement, the transactions contemplated herein or  any
    unrelated  transaction  (including  any  underlying  transaction between the
    Company or one of its Subsidiaries  and the beneficiary for which the Letter
    of Credit was procured) other than a defense based on the  gross  negligence
    or  willful  misconduct  of  the  Issuing  Bank, as determined by a court of
    competent jurisdiction;

              (C)  any  draft,  demand,   certificate   or  any  other  document
    presented under any Letter of Credit is proved  to  be  forged,  fraudulent,
    invalid or insufficient in any respect or any statement therein is untrue or
    inaccurate in any respect;

              (D)  payment  by  the  Issuing  Bank  under  any  Letter of Credit
    against presentation of a  demand,  draft  or  certificate or other document
    that does not comply with the terms of such Letter of Credit, provided  that
    such  payment  does not occur as a result of the gross negligence or willful
    misconduct of the  Issuing  Bank,  as  determined  by  a  court of competent
    jurisdiction;

              (E)  any adverse change in the condition (financial or  otherwise)
    of the Company;

                                      -26-

              (F)  any  breach of this Agreement or any other Financing Document
    by the Company, Administrative Agent  or  any Lender (other than the Issuing
    Bank);

              (G)  any other  circumstance  or  happening  whatsoever  which  is
    similar  to  any  of  the  foregoing; provided that such other occurrence or
    happening is not the result of the gross negligence or willful misconduct of
    the Issuing Bank, as determined by a court of competent jurisdiction; or

              (H)  the  fact  that  a   Default   shall  have  occurred  and  be
    continuing.

    Section 2.04   Disbursement of Funds.

         (a)  Availability.  No later than 2:00 p.m.  (Houston time) on the date
    of each Borrowing, each Lender will make available its pro rata  portion  of
    the amount (if any) by which the principal amount of the Borrowing requested
    to  be  made  on  such  date  exceeds the principal amount of Loans (if any)
    maturing or Reimbursement Obligations (if  any)  due and owing on such date,
    in Dollars and in immediately available funds at the  Payment  Office.   The
    Administrative  Agent  will  make  available  to  the Company at the Payment
    Office the aggregate  of  the  amounts  (if  any)  so  made available by the
    Lenders by depositing the  same,  in  immediately  available  funds,  to  an
    account of the Company at the Administrative Agent designated by the Company
    for  such  purpose.   To  the  extent  that  Loans  mature  or Reimbursement
    Obligations are due  and  owing  on  the  date  of  a requested Borrowing of
    Revolving Credit  Loans,  the  Lenders  shall  apply  the  proceeds  of  the
    Revolving  Credit  Loans  then  being  made,  to  the extent thereof, to the
    repayment  of  such  maturing   Loans  or  Reimbursement  Obligations,  such
    Revolving Credit Loans and  repayments  intended  to  be  a  contemporaneous
    exchange.

         (b)  Funds  to  the  Administrative  Agent.   Unless the Administrative
    Agent shall have  been  notified  by  any  Lender  prior  to  the  date of a
    Borrowing that such  Lender  does  not  intend  to  make  available  to  the
    Administrative  Agent  such  Lender's portion of the Borrowing to be made on
    such date, the Administrative  Agent  may  assume  that such Lender has made
    such amount available to the Administrative Agent  on  such  date,  and  the
    Administrative  Agent  may  make  available  to  the Company a corresponding
    amount.  If such corresponding amount is  not  in fact made available to the
    Administrative Agent by  such  Lender  on  the  date  of  a  Borrowing,  the
    Administrative  Agent shall be entitled to recover such corresponding amount
    on demand from such Lender together with interest at the Federal Funds Rate.
    If such Lender does  not  pay  such  corresponding amount forthwith upon the
    Administrative Agent's  demand  therefor,  the  Administrative  Agent  shall
    promptly  notify  the  Company,  and  the Company shall immediately pay such
    corresponding amount to the  Administrative  Agent together with interest at
    the rate specified for  the  Borrowing  which  includes  such  amount  paid.
    Nothing  in  this  Section  shall  be  deemed to relieve any Lender from its
    obligation to fulfill its  Commitment  hereunder  or to prejudice any rights
    which the Company may have against any Lender as a result of any default  by
    such Lender hereunder.

         (c)  Lenders' Responsibilities.  No Lender shall be responsible for any
    default  by  any other Lender in its obligation to make Loans hereunder, and
    each Lender shall be obligated to make  the  Loans provided to be made by it
    hereunder, regardless of the failure of any  other  Lender  to  fulfill  its
    Commit- ment hereunder.

    Section 2.05   Notes.

                                      -27-

         (a)  Revolving  Credit  Notes.   The  Company's  obligation  to pay the
    principal of, and  interest  on,  the  Revolving  Credit  Loans made by each
    Lender shall be further evidenced by the Company's issuance,  execution  and
    delivery of a Revolving Credit Note payable to the order of each such Lender
    in  the  amount  of the sum of such Lender's Revolving Credit Commitment and
    shall be dated as of  the  date  of  issuance of such Revolving Credit Note.
    The principal amount of each Revolving Credit Note shall be  payable  on  or
    before the Revolving Credit Maturity Date.


         (b)  Right to Collect on the Notes.  The Company and the Guarantors are
    personally  obligated  and fully liable for the amounts due under the Notes.
    The Lenders have  the  right  to  sue  on  the  Notes  and obtain a personal
    judgment against the Company and the  Guarantors  for  satisfaction  of  the
    amounts due under the Notes either before or after a judicial foreclosure of
    the Alaska Deed of Trust under Alaska Statute 09.45.170 - 09.45.220.

    Section 2.06   Interest.  In all cases subject to Section 9.13:

         (a)  Base  Rate  Loans.  Subject to Section 2.06(c), the Company agrees
    to pay interest in respect of the  unpaid principal amount of each Base Rate
    Loan from the date thereof until payment in full thereof at a rate per annum
    which shall be, for any day, equal to the sum of the Applicable Margin  plus
    the  Base  Rate in effect on such day, but in no event to exceed the Highest
    Lawful Rate.  The term "Base Rate"  shall  mean  the higher of (i) the Prime
    Rate in effect on such day or (ii) one-half of one percent (1/2%)  plus  the
    Federal Funds Rate in effect for such day (rounded upwards, if necessary, to
    the  nearest  1/16th  of  1%),  but in no event to exceed the Highest Lawful
    Rate.  For purposes of this Agreement, any  change in the Base Rate due to a
    change in the Federal Funds Rate or the Prime Rate shall be effective on the
    effective date of such change in the Federal Funds Rate or the  Prime  Rate,
    as  the  case may be.  If for any reason the Administrative 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 but not limited to the inability of the Administrative
    Agent to obtain sufficient bids or publications in accordance with the terms
    hereof, the Base Rate shall be the Prime Rate until the circumstances giving
    rise to such inability no longer exist.

         (b)  Eurodollar  Loans.  Subject to Section 2.06(c), the Company agrees
    to pay interest in respect of the unpaid principal amount of each Eurodollar
    Loan from the date thereof until payment in full thereof at a rate per annum
    which shall be the sum of the Applicable Margin plus the relevant Eurodollar
    Rate, but in no event to exceed the Highest Lawful Rate.

         (c)  Default Interest.  Overdue principal  and, to the extent permitted
    by law, overdue interest in respect of each Loan and all other amounts owing
    hereunder shall bear interest for each day that such amounts are overdue  at
    a  rate  per annum equal to three percent (3%) in excess of the Base Rate in
    effect for each such day.

         (d)  Miscellaneous.   Interest  on  each  Loan  shall  accrue  from and
    including the date of such Loan to but excluding the date of payment in full
    thereof.  Interest on each Eurodollar Loan shall be payable on the last  day
    of  each  Interest Period applicable thereto and, in the case of an Interest
    Period in excess of  three  months,  on  each  day  which occurs every three
    months after the initial date of such Interest Period, and on any prepayment
    (on the amount prepaid), at maturity

                                      -28-

    (whether by acceleration or  otherwise)  and,  after  maturity,  on  demand.
    Interest  on  Base  Rate  Loans  shall  be  payable  on each Quarterly Date,
    commencing on the first of such  days  to  occur after such Loan is made, at
    maturity (whether by acceleration or  otherwise)  and,  after  maturity,  on
    demand.

         (e)  Notice  by  the  Administrative  Agent.  The Administrative Agent,
    upon determining the Eurodollar Rate for any Interest Period, shall promptly
    notify by telephone (confirmed in writing) or in writing the Company and the
    Lenders thereof.

    Section 2.07   Interest  Periods.   In  connection  with  each  Borrowing of
Eurodollar Loans, the Company shall elect an Interest Period to be applicable to
such Borrowing, which Interest Period shall begin on and include,  as  the  case
may  be,  the  date  selected  by  the  Company pursuant to Section 2.02(a), the
conversion date or the date  of  expiration  of the then current Interest Period
applicable thereto, and end on but exclude the date which is  either  one,  two,
three or six months thereafter, as selected by the Company; provided that:

         (a)  Business Days.  If any Interest Period would otherwise expire on a
    day  which  is  not a Business Day, such Interest Period shall expire on the
    next succeeding Business Day, provided, further, that if any Interest Period
    (other than in  respect  of  a  Borrowing  of  Eurodollar Loans the Interest
    Period of which is  expiring  pursuant  to  Section  2.15(b)  hereof)  would
    otherwise  expire  on  a day which is not a Business Day but is a day of the
    month after  which  no  further  Business  Day  occurs  in  such month, such
    Interest Period shall expire on the next preceding Business Day;

         (b)  Month End. Any Interest Period which begins on the  last  Business
    Day  of  a  calendar  month  (or  on a day for which there is no numerically
    corresponding day in the calendar month  at the end of such Interest Period)
    shall, subject to Subsection (c) below, end on the last Business  Day  of  a
    calendar month;

         (c)  Payment  Limitations.   No Interest Period shall extend beyond any
    date that any principal payment or  prepayment is scheduled to be due unless
    the aggregate principal amount of Borrowings which are  Borrowings  of  Base
    Rate  Loans  or  which  have Interest Periods which will expire on or before
    such date, less the  aggregate  amount  of  any  other principal payments or
    prepayments due during such Interest Period, is equal to or in excess of the
    amount of such principal payment or prepayment; and

         (d)  Maturity Dates.   No  Interest  Period  shall  extend  beyond  the
    Revolving Credit Maturity Date.

    Section  2.08   Repayment  of  Loans.  Subject to the provisions of Sections
2.09, 2.10 and 2.11, the Company  shall  pay to the Administrative Agent for the
ratable benefit  of  the  Lenders  the  unpaid  principal  amount  of  (i)  each
Eurodollar  Loan  made  by such Lender hereunder on the last day of the Interest
Period in respect of such Loan  and  (ii)  each  Base Rate Loan on or before the
Revolving Credit Maturity Date.

                                      -29-

    Section 2.09   Termination or Reduction  of  Revolving  Credit  Commitments.
The Company may, upon at least three Business Days' notice to the Administrative
Agent,  terminate  entirely  at any time, or proportionately reduce from time to
time by an aggregate amount of  $5,000,000 or any larger multiple of $1,000,000,
the unused portions of the Revolving Credit Commitments, provided that any  such
reduction shall apply proportionately to the Revolving Credit Commitment of each
Lender.   If  the Revolving Credit Commitments are terminated in their entirety,
all accrued  commitment  fees  with  respect  thereto  shall  be  payable on the
effective date of such termination.

    Section 2.10   Prepayments.

         (a)  Mandatory Revolving Credit Loan  Prepayments.   If,  after  giving
    effect  to  any  reduction  of  the  Maximum Revolving Credit Loan Available
    Amount as a  result  of  a  redetermination  of  the  E&P  Borrowing Base as
    provided in Section 2.20 or decrease in  the  Active  Facility  Amount,  the
    outstanding aggregate principal amount of the Revolving Credit Loans exceeds
    the  amount  of  the  Maximum  Revolving  Credit Loan Available Amount as so
    reduced, the Company shall pay or  prepay  the Revolving Credit Loans in the
    amount of such excess, together with interest on the principal  amount  paid
    accrued to the date of such prepayment, pursuant to Section 2.10(d).

         (b)  Mandatory   Borrowing  Base  Prepayments.   If  at  any  time  the
    Aggregate Revolving Credit Exposure  is  in  excess of the Maximum Available
    Amount, the Company shall make a prepayment of  Revolving  Credit  Loans  or
    provide Cover for Letter of Credit Liabilities, or a combination thereof, in
    an  amount  equal  to such excess.  Any such Cover shall be provided in full
    within five Business Days of the  earlier  of  (i) the date of the Borrowing
    Base Report first reporting such excess  or  (ii)  the  date  on  which  the
    Administrative  Agent  provides  notice  thereof to the Company and any such
    prepayment, together with interest on  the  principal amount paid accrued to
    the date of such prepayment, shall be made pursuant to Section 2.10(d).

         (c)  Voluntary Prepayments.  The Company may, at  its  option,  at  any
    time  and  from  time  to  time,  prepay Loans, in whole or in part, without
    premium or penalty (other than  funding  losses, if any, resulting from such
    prepayment being made other than on the last day of an Interest Period  with
    respect to any Eurodollar Loan as provided in Section 2.18), upon giving, in
    the  case of a Eurodollar Loan, three Business Days' prior written notice to
    the Administrative Agent, and, in the case  of a Base Rate Loan, on the same
    Business Day's with prior written notice by 11:00 a.m. of such  day  to  the
    Administrative  Agent.   Such  notice  shall  specify the date and amount of
    prepayment and the Loan or Loans  (including the Type thereof) to which such
    prepayment  is  to  be  applicable.   Upon  receipt  of  such  notice,   the
    Administrative  Agent  shall  promptly  notify  each  Lender of the contents
    thereof and of such Lender's ratable  share of such prepayment.  The payment
    amount specified in the such notice shall be due and  payable  on  the  date
    specified.   Each  prepayment  of  Base  Rate  Loans shall be in the minimum
    principal amount of $1,000,000  and  in  integral  multiples of $100,000 and
    each prepayment of Eurodollar Loans shall be in the minimum principal amount
    of $5,000,000 and in integral multiples of $1,000,000 or,  in  the  case  of
    either  Base  Rate  Loans  or  Eurodollar  Loans,  or  the aggregate balance
    outstanding on the applicable  Notes.   Each  prepayment  of Term Loans made
    pursuant to  this  Section  shall  be  accompanied  by  any  funding  losses
    resulting  from  such prepayment being made other than on the last day of an
    Interest Period with respect to  any  Eurodollar Loan as provided in Section
    2.18.  Each prepayment shall be applied ratably to prepay the Loans  of  the
    several Lenders.

                                      -30-

         (d)  Payment  Procedure.   Any prepayment required pursuant to Sections
    2.10(a) or (b)  other  than  as  a  result  of  elections  by the Company to
    decrease the Active  Facility  Amount  or  the  Aggregate  Revolving  Credit
    Commitments,  if  not  otherwise  paid  promptly  upon determination of such
    required prepayment, shall be paid  in  full from cash flow available during
    the six month period from and after the date that the  deficiency  requiring
    such  prepayment  is  determined (the "Deficiency Period").  All prepayments
    pursuant to this Section 2.10 shall be applied first to such Base Rate Loans
    which are Revolving Credit Loans as  the Company may designate and second to
    such Eurodollar Loans which are Revolving Credit Loans as  the  Company  may
    designate.

         (e)  Notice  by  Administrative  Agent.   Upon  receipt  of a notice of
    prepayment pursuant to this Section, the Administrative Agent shall promptly
    notify each Lender of  the  contents  thereof  and  of such Lender's ratable
    share of such prepayment.

    Section 2.11   Continuation and Conversion Options.

         (a)  Continuation.  The Company may elect to continue all or  any  part
    of  any  Borrowing  of  Eurodollar  Loans  beyond the expiration of the then
    current Interest Period relating  thereto  by  giving  Advance Notice to the
    Administrative Agent of such election, specifying  the  Eurodollar  Loan  or
    portion  thereof  to  be continued and the Interest Period therefor.  In the
    absence of such  a  timely  and  proper  election  with regard to Eurodollar
    Loans, the  Company  shall  be  deemed  to  have  elected  to  convert  such
    Eurodollar Loan to a Base Rate Loan pursuant to Subsection 2.11(d).

         (b)  Amounts  of Continuations.  All or part of any Eurodollar Loan may
    be continued as provided herein, provided that any continuation of such Loan
    shall not be  (as  to  each  Loan  as  continued  for an applicable Interest
    Period) less than $5,000,000  and  shall  be  in  an  integral  multiple  of
    $1,000,000.

         (c)  Continuation or Conversion Upon Default.  If no Default shall have
    occurred  and  be  continuing,  each  Eurodollar  Loan  may  be continued or
    converted as provided in this Section.  If a Default shall have occurred and
    be continuing, the Company shall  not  have  the option to elect to continue
    any such Eurodollar Loan pursuant to Subsection 2.11(a) or to  convert  Base
    Rate Loans pursuant to Subsection 2.11(e).

         (d)  Conversion  to  Base  Rate.   The Company may elect to convert any
    Eurodollar Loan on the last day of the then current Interest Period relating
    thereto to a Base Rate Loan  by  giving Advance Notice to the Administrative
    Agent of such election.

         (e)  Conversion to Eurodollar Rate.  The Company may elect  to  convert
    any  Base Rate Loan at any time or from time to time to a Eurodollar Loan by
    giving  Advance  Notice  to  the  Administrative  Agent  of  such  election,
    specifying each Interest Period therefor.

         (f)  Amounts of Conversions.  All or  any part of the outstanding Loans
    may be converted as provided herein, provided that any  conversion  of  such
    Loans  shall not result in a Borrowing of Eurodollar Loans in an amount less
    than $5,000,000 and in integral multiples of $1,000,000.

                                      -31-

    Section 2.12   Fees.

         (a)  Revolving Credit  Commitments.   The  Company  shall  pay  to  the
    Administrative  Agent  for the account of and distribution to each Lender in
    accordance with  its  Percentage  Share  a  commitment  fee  for  the period
    commencing on the  Closing  Date  to  and  including  the  Revolving  Credit
    Maturity  Date  (or  such  earlier  date as the Revolving Credit Commitments
    shall have been terminated entirely) computed  at  a rate equal to .375% per
    annum on the average daily unused amount  of  the  Active  Facility  Amount,
    payable in arrears on the Quarterly Dates, commencing on the first Quarterly
    Date to occur after the Closing Date.

         (b)  Commitments.   The  Company  shall pay to the Administrative Agent
    for the account of and  distribution  to  each Lender in accordance with its
    Percentage Share a commitment fee for the period commencing on  the  Closing
    Date  to and including the Revolving Credit Maturity Date computed at a rate
    equal to .1875% per annum on the average daily amount by which the Aggregate
    Revolving Credit Commitments exceed  the  Active Facility Amount, payable in
    arrears on the Quarterly Dates, commencing on the first  Quarterly  Date  to
    occur  after the Closing Date.  In the event that the Company elects, at any
    time, to increase the  Active  Facility  Amount pursuant to Section 2.01(d),
    the Company shall pay to the Administrative Agent for  the  account  of  and
    distribution  to  each  Lender  in  accordance  with its Percentage Share an
    additional commitment fee for the  period  commencing on the date six months
    prior to the date such increase is designated (but in no event earlier  than
    the  later  to  have  occurred  of  the Closing Date or the date of the last
    increase of the  Active  Facility  Amount)  to  and  including  such date of
    designation computed at a rate equal to .375% per annum on the amount of the
    increase so designated.  Payment of such additional commitment fee shall  be
    due  and  payable upon delivery of the notice of designating the increase as
    provided to the Administrative Agent pursuant to Section 2.01(d).

         (c)  Letters of Credit.  (i) As  consideration  for the issuance of any
    Letter of Credit, the Company will pay to the Issuing Bank  the  greater  of
    (A)  $300  or  (B)  a fee on 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  (or  in  the  case  of  the
    Outstanding Letters of Credit, from and including the Effective Date) to and
    excluding  the  date of expiration or termination thereof computed at a rate
    equal  to  one-fourth of one percent (1/4%) per annum, payable in arrears on
    each Quarterly Date.  The Company shall  pay  to the Issuing Bank in arrears
    on each Quarterly Date, with respect to any amendment  or  transfer  of  any
    Letter  of  Credit  and  for  each  drawing made thereunder, documentary and
    processing charges in accordance  with  the Issuing Bank's standard schedule
    for such charges in effect at  the  time  of  such  amendment,  transfer  or
    drawing,  as  the case may be.  All fees payable pursuant to this clause (i)
    shall be retained by the applicable Issuing Bank.

         (ii)  The Company will pay to the Administrative Agent for the  account
    of  and  pro  rata  distribution  to  each Lender a fee on 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
    (or in the case of the Outstanding Letters of Credit, from and including the
    Effective  Date)  to  and  excluding  the  date of expiration or termination
    thereof computed at a per annum  rate  for  each day equal to the Applicable
    Margin for Eurodollar Loans in effect from time to time less  one-fourth  of
    one percent (1/4%) per annum, payable in arrears on each Quarterly Date.

                                      -32-

         (d)  Administrative  Agent  and  Documentation Agent Fees.  The Company
    shall pay to the Administrative  Agent  such  fees  as  are set forth in the
    letter agreement between the Administrative Agent and the Company  dated  as
    of  March  15,  1996,  as  the  same has been or may be hereafter amended or
    supplemented, on the dates specified therein.   The Company shall pay to the
    Administrative Agent and Documentation Agent such fees as are set  forth  in
    the  letter  agreement, dated as of March 18, 1996, among the Administrative
    Agent, the Documentation Agent and the  Company  as the same has been or may
    be hereafter amended or supplemented, on the dates specified therein.

    Section 2.13   Payments, etc.

         (a)  Without Setoff, etc.  Except as  otherwise  specifically  provided
    herein,   all   payments   under   this  Agreement  shall  be  made  to  the
    Administrative Agent on behalf  of  the  Lenders without defense, set-off or
    counterclaim to the Administrative Agent not later than 11:00 a.m.   Houston
    time  on  the  date  when  due  and  shall be made in Dollars in immediately
    available funds  at  the  Payment  Office.   The  Administrative  Agent will
    promptly thereafter distribute funds in the form received  relating  to  the
    payment  of  principal or interest or commitment fees ratably to the Lenders
    for the account of their respective  Lending  Offices, and funds in the form
    received relating to the payment of any other amount payable to  any  Lender
    to such Lender for the account of its Lending Office.

         (b)  Non-Business  Days.   Whenever any payment to be made hereunder or
    under any Note shall be stated to  be  due  on a day which is not a Business
    Day, the due date thereof shall be extended to the next succeeding  Business
    Day  (except as otherwise provided in Section 2.07 hereof) and, with respect
    to  payments  of  principal,  interest  thereon  shall  be  payable  at  the
    applicable rate during such extension.

         (c)  Computations.  All computations of  interest  shall be made on the
    basis of a year of 360 days (unless  such  calculation  would  result  in  a
    usurious  rate, in which case interest shall be calculated on the basis of a
    year of 365 or 366  days,  as  the  case  may  be) in the case of Eurodollar
    Loans, and 365 or 366 days (as the case may be) in the  case  of  Base  Rate
    Loans,  and all computations of fees shall be made on the basis of a year of
    360 days (unless such calculation would  result in a usurious rate, in which
    case interest shall be calculated on the basis of a year of 365 or 366 days,
    as the case may be), in each case for the actual number of  days  (including
    the  first day but excluding the last day) occurring in the period for which
    such interest or fees are payable.  Each determination by the Administrative
    Agent of an interest rate or fee hereunder shall, except for manifest error,
    be final,  conclusive  and  binding  for  all  purposes,  provided that such
    determination shall be made in good faith in a manner  generally  consistent
    with  the  Administrative  Agent's standard practice.  If the Administrative
    Agent and the Company  determine  that  manifest  error exists, said parties
    shall correct such error by way of an adjustment to the payment due  on  the
    next Quarterly Date.

    Section  2.14   Interest Rate Not Ascertainable, etc.  In the event that the
Administrative  Agent  shall  have  determined  (which  determination  shall  be
reasonably exercised and shall, absent  manifest error, be final, conclusive and
binding upon all parties) that on any date for determining the  Eurodollar  Rate
for any Interest Period, by reason of any changes arising after the date of this
Agreement affecting the interbank Eurodollar market, or any Lender's position in
such  market,  adequate  and  fair  means  do  not  exist  for  ascertaining the
applicable interest  rate  on  the  basis  provided  for  in  the  definition of
Eurodollar Rate, then,

                                      -33-

and in any such event, the  Administrative Agent shall forthwith give notice (by
telephone confirmed in writing) to the  Company  and  to  the  Lenders  of  such
determination.   Until  the  Administrative  Agent notifies the Company that the
circumstances giving rise to  the  suspension  described herein no longer exist,
the obligations of the Lenders to make Eurodollar  Loans  shall  be  immediately
suspended; any Eurodollar Loan that is requested (by continuation, conversion or
otherwise)  shall  instead  be  made  as  a  Base Rate Loan, and any outstanding
Eurodollar Loan shall be converted, on the last day of the then current Interest
Period applicable thereto, to a Base Rate Loan.

    Section 2.15   Illegality.

         (a)  Determinations  of Illegality.  In the event that any Lender shall
    have determined  (which  determination  shall  be  reasonably  exercised and
    shall, absent manifest error, be final,  conclusive  and  binding  upon  all
    parties)  at  any time that the making or continuance of any Eurodollar Loan
    has become unlawful by  compliance  by  such  Lender  in good faith with any
    applicable law, governmental rule, regulation, guideline or  order  (whether
    or  not  having  the  force  of  law  and  whether  or not failure to comply
    therewith would be unlawful), then, in any such event, the Lender shall give
    prompt notice (by telephone confirmed in  writing) to the Company and to the
    Administrative Agent of such determination (which notice the  Administrative
    Agent shall promptly transmit to the other Lenders).

         (b)  Eurodollar  Loans Suspended.  Upon the giving of the notice to the
    Company referred to in  Subsection  (a)  above,  (i)  the Company's right to
    request  (by  continuation,  conversion  or  otherwise)  and  such  Lender's
    obligation to make Eurodollar Loans shall be immediately suspended, and  any
    such  requested  Eurodollar  Loan shall instead be made as a Base Rate Loan,
    and (ii) if the affected Eurodollar  Loan or Loans are then outstanding, the
    Company shall immediately, or if permitted by applicable law, no later  than
    the  date permitted thereby, upon at least one Business Day's written notice
    to the Administrative  Agent  and  the  affected  Lender,  convert each such
    Eurodollar Loan into a Base Rate Loan, provided that if more than one Lender
    is affected at any time, then all affected Lenders must be treated the  same
    pursuant to this Subsection.

    Section 2.16   Increased Costs.

         (a)  Eurodollar  Regulations, etc.  If, by reason of (x) after the date
    hereof, the introduction of or  any  change  (including, but not limited to,
    any change by way of imposition or increase of reserve requirements)  in  or
    in  the  interpretation of any law or regulation, or (y) the compliance with
    any guideline  or  request  from  any  central  bank  or  other governmental
    authority or quasi-governmental authority exercising control over  banks  or
    financial institutions generally (whether or not having the force of law):

              (i)  any  Lender  (or  its  applicable  Lending  Office)  shall be
         subject to any tax, duty or other charge with respect to its Eurodollar
         Loans or its obligation to  make  Eurodollar Loans, or shall change the
         basis of taxation of payments to any Lender  of  the  principal  of  or
         interest  on  its Eurodollar Loans or its obligation to make Eurodollar
         Loans (except for changes in the rate  of tax on the overall net income
         or gross receipts of such  Lender  or  its  applicable  Lending  Office
         imposed  by the jurisdiction in which such Lender's principal executive
         office or applicable Lending Office is located); or

                                      -34-

              (ii) any reserve (including,  but  not  limited to, any imposed by
         the Board of Governors of the Federal Reserve System), special  deposit
         or  similar  requirement  against  assets  of, deposits with or for the
         account of, or  credit  extended  by,  any  Lender's applicable Lending
         Office shall be imposed or deemed applicable  or  any  other  condition
         affecting  its  Eurodollar  Loans or its obligations to make Eurodollar
         Loans shall be imposed on  any  Lender or its applicable Lending Office
         or the interbank Eurodollar market  or  the  secondary  certificate  of
         deposit market;

    and  as  a  result  thereof  there shall be any increase in the cost to such
    Lender of agreeing  to  make  or  making,  funding or maintaining Eurodollar
    Loans (except to the extent already included in  the  determination  of  the
    applicable  Eurodollar  Rate)  or  there  shall be a reduction in the amount
    received or receivable by such Lender or its applicable Lending Office, then
    the Company shall from time to time,  upon written notice from and demand by
    such Lender (with a copy of such notice and  demand  to  the  Administrative
    Agent),  pay to such Lender, within 30 days after the date specified in such
    notice and  demand,  additional  amounts  determined  by  such  Lender  in a
    reasonable manner to be sufficient to indemnify  such  Lender  against  such
    increased  cost.   A certificate as to the amount of such increased cost and
    the calculation thereof,  submitted  to  the  Company and the Administrative
    Agent by such Lender, shall, except for manifest error, be final, conclusive
    and binding for all purposes, provided that the determination of such amount
    shall be made in good faith in  a  manner  generally  consistent  with  such
    Lender's standard practice.

         (b)  Costs.  If any Lender shall advise the Administrative  Agent  that
    at any time, because of the circumstances described in clauses (x) or (y) in
    Subsection  2.16(a)  or  any other circumstances arising after the Effective
    Date affecting  such  Lender  or  the  interbank  Eurodollar  market or such
    Lender's position in such market, the Eurodollar Rate, as determined in good
    faith by the Administrative Agent, will not adequately  and  fairly  reflect
    the  cost  to  such Lender of funding its Eurodollar Loans, then, and in any
    such event:

              (i)   the Administrative  Agent  shall  forthwith  give notice (by
         telephone confirmed in writing) to the Company and to  the  Lenders  of
         such advice;

              (ii)  the  Company's right to request and such Lender's obligation
         to make  Eurodollar  Loans  shall  be  immediately  suspended, any such
         Eurodollar Loan that  is  requested  (by  continuation,  conversion  or
         otherwise)  shall  instead  be  made  as a Base Rate Loan, and any such
         outstanding Eurodollar Loan shall be converted,  on the last day of the
         then current Interest Period applicable thereto, to a Base Rate Loan.

         (c)  Capital Adequacy.  If, by reason of (i) after the date hereof, the
    introduction of or any change (including, but not limited to, any change  by
    way  of  imposition  or  increase  of  reserve  requirements)  in  or in the
    interpretation of any law  or  regulation,  or  (ii) the compliance with any
    guideline or request from any central bank or other  governmental  authority
    or  quasi-governmental  authority exercising control over banks or financial
    institutions generally (whether or not  having  the force of law) affects or
    would affect the amount of capital required to be maintained by  any  Lender
    or  any  corporation controlling such Lender, and the amount of such capital
    is increased by or based upon  the  existence of such Lender's Commitment to
    lend hereunder and other commitments of this  Type  or  of  the  Letters  of
    Credit  (or  similar  contingent  obligations),  then,  within 30 days after
    written request therefor by such Lender (with  a copy of such request to the
    Administrative Agent), the

                                      -35-

    Company shall pay to such Lender, from time to time  as  specified  by  such
    Lender,  additional  amounts  sufficient  to  compensate such Lender for the
    increased cost of such additional capital in light of such circumstances, to
    the extent that such Lender  reasonably  determines such increase in capital
    to be allocable to  the  existence  of  such  Lender's  Commitment  to  lend
    hereunder  or  to  the  issuance or maintenance of the Letters of Credit.  A
    certificate as to such amounts and the calculation thereof, submitted to the
    Company and the Administrative Agent by such Lender, shall be conclusive and
    binding  for  all  purposes,  absent   manifest  error,  provided  that  the
    determination of such amount shall  be  made  in  good  faith  in  a  manner
    generally consistent with such Lender's standard practice.

         (d)  Issuing  Bank.   The rights and benefits of the Lenders under this
    Section 2.16 shall also apply to the Issuing Bank in its capacity as such.

         (e)  Notice.  The Company  shall  not  be  obligated  to compensate any
    Lender pursuant to this Section 2.16  for  any  amounts  attributable  to  a
    period more than 90 days prior to the giving of notice by such Lender to the
    Company of its intention to seek compensation under this Section 2.16.

    Section  2.17   Change  of  Lending Office.  Each Lender agrees that it will
use reasonable efforts to designate an  alternate Lending Office with respect to
any of its Eurodollar Loans affected by the matters or  circumstances  described
in  Sections  2.14, 2.15 or 2.16 to reduce the liability of the Company or avoid
the  results  provided  thereunder,   so   long   as  such  designation  is  not
disadvantageous to such  Lender  as  determined  by  such  Lender  in  its  sole
discretion;  provided  that such Lender shall have no obligation to so designate
an alternate Lending Office located in the United States.

    Section 2.18   Funding Losses.   The  Company  shall compensate each Lender,
upon its written request (which request shall set forth the basis for requesting
such amounts and which request shall be reasonably exercised and  shall,  absent
manifest  error,  be  final,  conclusive  and  binding  upon  all of the parties
hereto), for all losses,  expenses  and  liabilities (including, but not limited
to, any interest paid by such Lender to lenders of funds borrowed by it to  make
or  carry  its  Eurodollar  Loans  to  the extent not recovered by the Lender in
connection  with  the  re-employment  of   such  funds  and  including  loss  of
anticipated profits), which the Lender may  sustain:   (i)  if  for  any  reason
(other  than  a default by such Lender) a Borrowing of Eurodollar Loans does not
occur on the date  specified  therefor  in  a  Borrowing Request (whether or not
withdrawn), (ii) if any repayment (or conversion pursuant to  Section  2.16)  of
any  of  its  Eurodollar  Loans occurs on a date which is not the last day of an
Interest Period applicable thereto,  or  (iii)  if,  for any reason, the Company
defaults in its obligation to repay its Eurodollar Loans when  required  by  the
terms of this Agreement.

    Section 2.19   Sharing of Payments,  etc.   If  any  Lender shall obtain any
payment or reduction (including, but not limited to,  any  amounts  received  as
adequate protection of a deposit treated as cash collateral under the Bankruptcy
Code)   of   any   obligation  of  the  Company  hereunder  (whether  voluntary,
involuntary, through the exercise  of  any  right  of  set-off, or otherwise) in
excess of its ratable share  of  payments  or  reductions  on  account  of  such
obligations  obtained by all the Lenders, such Lender shall forthwith (i) notify
each of the other Lenders and the Administrative Agent of such receipt, and (ii)
purchase from the other Lenders  such participations in the affected obligations
as shall be necessary to cause  such  purchasing  Lender  to  share  the  excess
payment  or  reduction,  net  of costs incurred in connection therewith, ratably
with each of them, provided that if all or any portion of such excess payment or
reduction is thereafter  recovered  from  such  purchasing  Lender or additional
costs are incurred, the purchase shall be

                                      -36-

rescinded and the purchase price restored to the extent of such recovery or such
additional costs, but without interest.  The Company agrees that any  Lender  so
purchasing  a participation from another Lender pursuant to this Section may, to
the fullest  extent  permitted  by  law,  exercise  all  its  rights  of payment
(including the right of set-off) with respect to such participation as fully  as
if  such  Lender  were  the direct creditor of the Company in the amount of such
participation.

    Section 2.20   E&P Borrowing Base.

         (a)  Redetermination  Date;  Initial  E&P   Borrowing  Base.   The  E&P
    Borrowing Base shall be determined in accordance with Section 2.20(b) by the
    Administrative Agent with the concurrence of the  Majority  Lenders  and  is
    subject  to  redetermination  in  accordance with Section 2.20(d).  Upon any
    redetermination of the E&P Borrowing Base, such redetermination shall remain
    in effect until the  next successive Redetermination Date.  "Redetermination
    Date" shall mean the date that the redetermined E&P Borrowing  Base  becomes
    effective  subject  to  the notice requirements specified in Section 2.20(e)
    both  for  scheduled   redeterminations  and  unscheduled  redeterminations.
    During  the  period  from  and  after  the  Closing  Date  until  the   next
    Redetermination  Date,  unless  redetermined  pursuant  to  any  unscheduled
    redeterminations, the amount of the E&P Borrowing Base shall be $45,000,000;
    provided,  however, if both the Mandate Event and the Collection Event occur
    prior to the next Redetermination Date, the amount of the E&P Borrowing Base
    shall be increased to $70,000,000.

         (b)  Redetermination.  Upon  receipt  of  the  Reserve  Reports  by the
    Administrative Agent, the Administrative  Agent  will  redetermine  the  E&P
    Borrowing  Base.   Such  redetermination by the Administrative Agent, in its
    sole discretion,  will  be  in  accordance  with  its  normal  and customary
    procedures for evaluating oil and gas reserves and other related  assets  as
    such  exist at that particular time.  The Administrative Agent shall propose
    to the Lenders a new E&P Borrowing  Base within 15 days following receipt by
    the Administrative Agent and the Lenders of the  complete  Reserve  Reports.
    After  having  received notice of such proposal by the Administrative Agent,
    the Majority Lenders shall  have  15  days  to  agree  or disagree with such
    proposal.  If at the end of the 15  days,  the  Majority  Lenders  have  not
    communicated  their approval or disapproval, such silence shall be deemed to
    be an approval and the Administrative  Agent's proposal shall be the new E&P
    Borrowing Base.  If however,  the  Majority  Lenders  notify  Administrative
    Agent  within  15  days  of  their  disapproval, the Majority Lenders shall,
    within a reasonable period of time, agree on a new E&P Borrowing Base.

         (c)  Exclusion of Certain  Property.   The  Administrative Agent in its
    reasonable discretion, may exclude any Oil and Gas Property  or  portion  of
    production  therefrom  or  any  income  from any other Property from the E&P
    Borrowing Base, at any time and  for  any reason, including, but not limited
    to,  the  following:   the  title  information  for  such  Property  is  not
    satisfactory, such Property is not  Mortgaged  Property,  such  Property  is
    located  outside  of  the  United States of America, or such Property is not
    assignable.

         (d)  Time of Redetermination, etc.  So  long  as any of the Commitments
    are in effect and so long as there remains any Revolving Credit Exposure  as
    to  any  Lender,  on  or around the first Business Day of each October 1 and
    April 1, commencing  October  1,  1996  (each  being a "Scheduled Redetermi-
    nation Date"), the Administrative Agent, the  Documentation  Agent  and  the
    Lenders shall redetermine the amount of the E&P Borrowing Base in accordance
    with Section 2.20(b).  In

                                      -37-

    addition,  the  Simple  Majority Lenders may elect to initiate, at any other
    time as  they  so  elect,  one  unscheduled  redetermi-  nation  of  the E&P
    Borrowing Base during any consecutive twelve (12) month period by specifying
    in writing to the Company the date on which the  Company  is  to  furnish  a
    Reserve  Report and the date on which such redetermination is to occur.  The
    Company may  initiate  up  to  two  additional  redeterminations  of the E&P
    Borrowing Base in any calendar year.  Each such request shall be accompanied
    by a Reserve Report and a $10,000 redetermination fee for the account of the
    Administrative Agent.  In the event of any such unscheduled redetermination,
    the Administrative Agent, the Documentation  Agent  and  the  Lenders  shall
    redetermine  the amount of the E&P Borrowing Base in accordance with Section
    2.20(b).

         (e)  Notice by Administrative  Agent.   The  Administrative Agent shall
    promptly notify in writing the Company  and  the  Lenders  of  the  new  E&P
    Borrowing  Base.  Any redetermination of the E&P Borrowing Base shall not be
    in effect until written notice is received by the Company.

    Section 2.21   Taxes.

         (a)  Payments Free and  Clear.   Any  and  all  payments by the Company
    under this Agreement or any other  Financing  Document  shall  be  made,  in
    accordance  with  Section  2.13, free and clear of and without deduction for
    any and all present or future taxes, levies, imposts, deductions, charges or
    withholdings, and all liabilities  with  respect  thereto, excluding, in the
    case of each Lender, the Administrative Agent and each Issuing  Bank,  taxes
    imposed  on its income, and franchise or similar taxes imposed on it, by (i)
    any  jurisdiction  (or   political   subdivision   thereof)   of  which  the
    Administrative Agent, the Issuing Bank or such Lender, as the case  may  be,
    is  a  citizen  or  resident  or  in  which  such  Lender  has  a  permanent
    establishment  (or is otherwise engaged in the active conduct of its banking
    business through an office or  a  branch)  which is such Lender's applicable
    Lending Office, (ii) the jurisdiction (or any political subdivision thereof)
    in which the Administrative Agent,  the  Issuing  Bank  or  such  Lender  is
    organized,  or  (iii) any jurisdiction (or political subdivision thereof) in
    which such Lender, the Issuing Bank or the Administrative Agent is presently
    doing business which taxes are imposed  solely as a result of doing business
    in  such  jurisdiction  (all  such  non-excluded  taxes,  levies,   imposts,
    deductions, charges, withholdings and liabilities so arising out of payments
    by  the  Company  being hereinafter referred to as "Taxes").  If the Company
    shall be required by law to deduct  any  Taxes from or in respect of any sum
    payable hereunder to the Lenders, the Issuing Banks  or  the  Administrative
    Agent (i) the sum payable shall be increased by the amount necessary so that
    after  making  all  required  deductions (including deductions applicable to
    additional sums payable under  this  Section  2.21) such Lender, the Issuing
    Bank or the Administrative Agent (as the  case  may  be)  shall  receive  an
    amount  equal  to the sum it would have received had no such deductions been
    made, (ii) the Company  shall  make  such  deductions  and (iii) the Company
    shall pay the full amount deducted to the relevant taxing authority or other
    Governmental Authority in accordance with applicable law.

         (b)  Other Taxes.  In addition, the Company agrees to pay  any  present
    or  future stamp or documentary taxes or any other excise or property taxes,
    charges or similar levies that arise from any payment made hereunder or from
    the execution, delivery or  registration  of,  or otherwise with respect to,
    this Agreement,  any  Assignment  and  Acceptance  or  any  other  Financing
    Document (hereinafter referred to as "Other Taxes").

                                      -38-

         (c)  Indemnification.   The  Company  will  indemnify each Lender, each
    Issuing Bank and the Administrative Agent  for  the full amount of Taxes and
    Other Taxes (including, but not limited to, any Taxes or Other Taxes imposed
    by any jurisdiction on amounts payable under this Section 2.21) paid by such
    Lender or the Issuing Bank or the Administrative Agent (on their  behalf  or
    on  behalf  of any Lender), as the case may be, and any liability (including
    penalties, interest and expenses) arising therefrom or with respect thereto,
    whether or not such Taxes or Other Taxes were correctly or legally asserted.
    Any payment pursuant to such  indemnification  shall  be made within 30 days
    after the date any Lender, the Issuing Bank or the Administrative Agent,  as
    the  case may be, makes written demand therefor.  If any Lender, the Issuing
    Bank or the Administrative Agent receives  a  refund or credit in respect of
    any Taxes or Other Taxes for which such Lender,  the  Issuing  Bank  or  the
    Administrative  Agent  has  received  payment  from the Company hereunder it
    shall promptly notify the Company of such refund or credit and shall, within
    30 days after receipt of a request by the Company (or promptly upon receipt,
    if the Company has requested application  for such refund or credit pursuant
    hereto), pay an amount equal to such refund or credit to the Company without
    interest (but with any interest so refunded or credited), provided that  the
    Company,  upon  the  request  of  such  Lender,  the  Issuing  Bank  or  the
    Administrative   Agent,  agrees  to  return  such  refund  or  credit  (plus
    penalties, interest or other charges)  to  such  Lender, the Issuing Bank or
    the Administrative Agent in the event such Lender, the Issuing Bank  or  the
    Administrative Agent is required to repay such refund or credit.

         (d)  Receipts.   Within  30 days after the date of any payment of Taxes
    or Other Taxes withheld by  the  Company  in  respect  of any payment to any
    Lender, the Issuing Bank or  the  Administrative  Agent,  the  Company  will
    furnish  to  the  Administrative Agent the original or a certified copy of a
    receipt evidencing payment thereof.

         (e)  Survival.   Without  prejudice  to   the  survival  of  any  other
    agreement contained herein, the agreements and obligations contained in this
    Section 2.21 shall survive the payment in full  of  principal  and  interest
    hereunder.

         (f)  Lender  Representations.  Each Lender represents that it is either
    (i) a corporation organized under the  laws  of the United States of America
    or any state thereof or (ii) it  is  entitled  to  complete  exemption  from
    United  States  withholding  tax imposed on or with respect to any payments,
    including fees, to be made  to  it  pursuant  to this Agreement (A) under an
    applicable provision of a tax convention  to  which  the  United  States  of
    America  is  a party or (B) because it is acting through a branch, agency or
    office in the United States of America  and any payment to be received by it
    hereunder is effectively connected with a trade or business  in  the  United
    States  of  America.   Each Lender that is not a corporation organized under
    the laws of the United  States  of  America  or  any state thereof agrees to
    provide to the Company and the Administrative Agent on the  Effective  Date,
    or  on the date of its delivery of the Assignment and Acceptance pursuant to
    which it becomes a Lender,  and  at  such  other times as required by United
    States law or as the Company or the Administrative  Agent  shall  reasonably
    request,  two  accurate  and  complete  original signed copies of either (A)
    Internal Revenue Service Form 4224  (or  successor form) certifying that all
    payments to be made to it hereunder  will  be  effectively  connected  to  a
    United States trade or

                                      -39-

    business  (the  "Form  4224  Certification") or (B) Internal Revenue Service
    Form 1001 (or successor form) certifying  that it is entitled to the benefit
    of a provision of a tax convention to which the United States of America  is
    a  party  which  completely  exempts  from United States withholding tax all
    payments to be made  to  it  hereunder  (the "Form 1001 Certification").  In
    addition, each Lender agrees  that  if  it  previously  filed  a  Form  4224
    Certification  it will deliver to the Company and the Administrative Agent a
    new Form 4224 Certification  prior  to  the  first payment date occurring in
    each of its subsequent taxable years; and if it previously filed a Form 1001
    Certification, it will deliver to the Company and the Administrative Agent a
    new certification prior to the first payment date falling in the third  year
    following  the  previous  filing  of  such  certification.  Each Lender also
    agrees to deliver to the Company  and the Administrative Agent such other or
    supplemental forms as may at any time be required as a result of changes  in
    applicable  law  or regulation in order to confirm or maintain in effect its
    entitlement to exemption from United  States withholding tax on any payments
    hereunder, provided that the circumstances of the  Lender  at  the  relevant
    time  and  applicable laws permit it to do so.  If a Lender determines, as a
    result of any change in either  (i) applicable law, regulation or treaty, or
    in any official application thereof or (ii) its circumstances,  that  it  is
    unable  to  submit  any  form  or certificate that it is obligated to submit
    pursuant to this Section, or that  it  is required to withdraw or cancel any
    such form or certificate previously submitted, it shall promptly notify  the
    Company and the Administrative Agent of such fact.  If a Lender is organized
    under  the  laws  of  a  jurisdiction  outside the United States of America,
    unless the Company and the  Administrative  Agent  have received a Form 1001
    Certification or Form 4224 Certification  satisfactory  to  them  indicating
    that  all  payments  to  be made to such Lender hereunder are not subject to
    United States withholding tax,  the  Company  shall withhold taxes from such
    payments at the applicable statutory rate, provided  that  such  withholding
    shall  not increase the amount of payments for the account of such Lender to
    be made by the Company  pursuant  to Subsection 2.21(a).  Each Lender agrees
    to indemnify and hold harmless from  any  United  States  taxes,  penalties,
    interest and other expenses, costs and losses incurred or payable by (i) the
    Administrative Agent as a result of such Lender's failure to submit any form
    or  certificate  that  it is required to provide pursuant to this Section or
    (ii) the Company or the Administrative  Agent  as a result of their reliance
    on any such form or certificate which it has provided to  them  pursuant  to
    this Section.

         (g)  Efforts  to  Avoid  or Reduce.  Any Lender claiming any additional
    amounts payable pursuant to this  Section  2.21 shall use reasonable efforts
    (consistent with legal and regulatory restrictions) to file any  certificate
    or  document  requested  by  the  Company  or the Administrative Agent or to
    change the jurisdiction of its  applicable  Lending Office or to contest any
    tax imposed if the making of such a filing or change or contesting such  tax
    would avoid the need for or reduce the amount of any such additional amounts
    that  may thereafter accrue and would not, in the sole determination of such
    Lender, be otherwise disadvantageous to such Lender.

    Section 2.22   Pro Rata Treatment.  Except as required under Section 2.15 or
2.16, each Borrowing, each payment or  prepayment of principal of any Borrowing,
each payment of interest on the Loans, each payment of the fees, each  reduction
of  the  Commitments,  and each refinancing of any Borrowing with, conversion of
any Borrowing to or continuation  of  any  Borrowing  as a Borrowing of any Type
shall be allocated ratably and pro rata among the  Lenders  in  accordance  with
their  respective Percentage Share.  Each Lender agrees that in com- puting such
Lender's portion of any Borrowing to be made hereunder, the Administrative Agent
may, in its discretion, round  each  Lender's  portion  of such Borrowing to the
next higher or lower whole dollar amount.

                                      -40-

    Section 2.23   Disposition  of  Proceeds.   The  E&P  Mortgage  contains  an
assignment  by  Tesoro E&P to the Administrative Agent of all production and all
proceeds attributable thereto which may be produced from or allocated to the Oil
and Gas Properties described therein,  and  the E&P Mortgage further provides in
general for the  application  of  such  proceeds  to  the  satisfaction  of  the
indebtedness, liabilities and obligations described therein and secured thereby.
Notwithstanding  such assignment in such E&P Mortgage, the Administrative Agent,
the Issuing Banks and  the  Lenders  hereby  grant  to  Tesoro  E&P a license to
receive, collect and use the proceeds attributable to such production and  agree
not to notify the purchaser or purchasers of such production and not to take any
other  action to cause such proceeds to be remitted to the Administrative Agent,
the Issuing Banks or the  Lenders,  in  each  case  unless and until an Event of
Default has occurred and is continuing; provided that so long as no Default  has
occurred and is continuing, the Administrative Agent shall execute and deliver a
letter  in  the  form  of  Exhibit  F to such Persons as the Company may direct;
provided, further, if the Administrative  Agent,  the Issuing Bank or any Lender
shall receive any such proceeds directly from any such purchaser  prior  to  the
occurrence  and  continuation  of  a Default, then such Person so receiving such
proceeds shall notify the Company  thereof  and  upon request of the Company and
pursuant to its written instructions shall promptly remit such proceeds  to  the
Company for the account of Tesoro E&P.

    Section  2.24   Senior Debt.  The Lender Indebtedness is Senior Debt as such
term is defined in that certain Subordination Agreement dated December 15, 1993,
among the Company, Tesoro Alaska, and the State of Alaska, attached as Exhibit 7
to the Settlement Agreement dated  December  15, 1992, among the Company, Tesoro
Alaska, and the State of Alaska.


                                  ARTICLE III

                        CONDITIONS TO BORROWINGS AND TO
                      PURCHASE, RENEWAL AND REARRANGEMENT

    The obligation of each Lender to make a Loan or an Issuing Bank to  issue  a
Letter  of  Credit  hereunder  is  subject  to the satisfaction of the following
conditions:

    Section  3.01   Closing.   The   Company   shall   have   delivered  to  the
Administrative Agent on or before the Closing Date all instruments, certificates
and opinions referred to in Section 3.02 not theretofore delivered.

    Section 3.02   Conditions Precedent to Initial Loan.  At  the  time  of  the
making  by  such  Lender  of  its  initial Loan hereunder or the issuance by the
Issuing Bank of the initial Letter of Credit (including, but not limited to, the
assumption by the Lenders of the Outstanding Letters of Credit), all obligations
of the Company hereunder  to  the  Administrative  Agent  or any Lender incurred
prior to such initial Loan or Letter of Credit (including, but not  limited  to,
the  Company's  obligation to reimburse the reasonable fees and disbursements of
counsel to the Administrative Agent for  which  the Company has been provided an
invoice and any fees payable to the Lenders or the Administrative  Agent  on  or
before the Effective Date), shall have been paid in full, and the Administrative
Agent  shall  have received the following, each dated as of the Closing Date, in
form and substance satisfactory  to  the  Administrative Agent, with an original
thereof for the Administrative Agent and with sufficient copies thereof for each
Lender (except that in the case of the Notes,  the  originals  thereof  will  be
delivered to the respective Lenders):

                                      -41-

         (a)  Notes  -  A  duly completed and executed Revolving Credit Note for
    each Lender and in  each  case  payable  to  the order of the Administrative
    Agent for the benefit of such Lender.

         (b)  Resolutions and Incumbency Certificates -

              (i)   certified   copies  of  the  resolutions  of  the  Board  of
         Directors of the Company and  its  Subsidiaries that are parties to any
         Financing Document approving, as appropriate,  the  Loans,  the  Notes,
         this  Agreement  and  the  other  Financing  Documents,  and  all other
         documents, if any, to which the  Company  or such Subsidiary is a party
         evidencing corporate authorization with respect to such documents;

              (ii)  a certificate of the Secretary or an Assistant Secretary  of
         the  Company  certifying (A) the name, title and true signature of each
         officer of such Person authorized to execute the Notes, this Agreement,
         Applications and the other Financing Documents  to which it is a party,
         (B) the name, title and true signature of each officer of  such  Person
         authorized  to  provide  the  certifications  required pursuant to this
         Agreement  including,  but  not  limited  to,  certifications  required
         pursuant  to  Section  5.15,  Borrowing  Requests,  and  Borrowing Base
         Reports, and (C) that attached thereto is a true and complete  copy  of
         the  articles of incorporation and bylaws of the Company, as amended to
         date, and a recent good standing certificate; and

              (iii) a certificate of the Secretary  or an Assistant Secretary of
         each Subsidiary that is a party to any  Financing  Document  certifying
         (x)  the  name,  title  and  true  signature  of  each  officer of each
         Subsidiary authorized to execute each  such Financing Document to which
         it is a party, and (y) that attached thereto is  a  true  and  complete
         copy of the articles of incorporation and bylaws of such Subsidiary, as
         amended to date, and a recent good standing certificate.

         (c)  Opinions  of  Counsel  - Favorable written opinions of Fulbright &
    Jaworski L.L.P., counsel to the Company and its Subsidiaries, James C. Reed,
    Jr., special counsel to the Company,  and Groh, Eggers & Price, local Alaska
    counsel to the Company, in each case addressed to the Administrative  Agent,
    the Issuing Bank and each of the Lenders, in form and substance satisfactory
    to the Administrative Agent, as to such matters incident to the Transactions
    as  any  Lender  through  the  Administrative Agent, the Issuing Bank or the
    Administrative Agent may reasonably request.

         (d)  The Security Instruments -

              (i)   Guaranty Agreement;

              (ii)  Security  Agreements  or   Amended   and  Restated  Security
         Agreements, as applicable, dated as of the  Closing  Date  executed  by
         each  of  the Company, Tesoro Alaska, Tesoro R&M, KPL, Tesoro Coastwide
         and  Tesoro  Vostok,  granting  to  the  Administrative  Agent  a first
         priority security interest in all personal Property  described  therein
         of  each  such  Person,  as  security for the indebtedness respectively
         defined therein as the "Obligations;"

              (iii) Pledge Agreements dated as  of  the Closing Date executed by
         the Company granting to  the  Administrative  Agent  a  first  priority
         security interest in 100% of the capital

                                      -42-

         stock  of  Tesoro Alaska, Tesoro R&M, Tesoro Exploration and Production
         Company, Tesoro Gas Resources Company, Inc., Tesoro Natural Gas Company
         and TAPL, as security for the Lender Indebtedness;

              (iv)   Amendment of the Alaska Deed of Trust;

              (v)    the E&P Mortgage and any amendments thereto;

              (vi)   Financing  Statements,  as   appropriate,  to  perfect  the
         security interests created by the instruments delivered  under  clauses
         (ii) through (v) above;

              (vii)  Stock   certificates  and  corresponding  stock  powers  to
         perfect the Administrative Agent's security in the stock pledged by the
         instrument delivered under clause (iv) above;

              (viii) all Property in  which  the  Administrative Agent shall, at
         such time, be entitled to have a Lien pursuant to this Agreement or any
         other Financing Document shall have been physically  delivered  to  the
         possession  of  the  Administrative Agent or any bailee accepted by the
         Administrative Agent to the  extent  that  such possession is necessary
         for the purpose of perfecting the Administrative Agent's Lien  in  such
         collateral security;

              (ix)   the  Cash  Collateral  Account  Agreement  described in the
         definition of "Cover";

              (x)    Assignment  and  Acceptance  Agreement  from  each  of  the
         lenders in the Existing Credit Agreement to the Lenders;

              (xi)   Assignment of Liens;

              (xii)  Confirmation  letter  acknowledged   by   State  of  Alaska
         regarding subordinate states; and

              (xiii) Notice to  National  Bank  of  Alaska  in  connection  with
         intercreditor agreement.

         (e)  Insurance.  A certificate of insurance coverage of the Company and
    its  Subsidiaries  evidencing  that  the  Company  is  carrying insurance in
    accordance with Section 5.05 hereof.   In addition, the Administrative Agent
    shall have received evidence satisfactory to the Administrative  Agent  that
    the Kenai Refinery and Tesoro Terminals are not situated in an area that has
    been  identified  by the Director of the Federal Emergency Management Agency
    or any other Governmental Authority as an area having special flood hazards.
    Should it be determined, however, that  the Kenai Refinery is situated in an
    area identified as having special flood hazards,  the  Administrative  Agent
    shall  have  received  a  copy  of the applicable flood insurance policy (or
    policy  applications),   in   form   and   substance   satisfactory  to  the
    Administrative Agent, indicating that the maximum limits  of  coverage  have
    been obtained and that the full premium therefor has been paid in full.

                                      -43-

         (f)  Title  Opinions.   Title  opinions as the Administrative Agent may
    require from  attorneys  satisfactory  to  the  Administrative Agent setting
    forth the status of title to the Oil and Gas Properties  that  constitute  a
    part of the Mortgaged Property.

         (g)  Title   Insurance;   Survey.    An  endorsement  to  the  existing
    Mortgagee's Policy of Title Insurance, in form and substance satisfactory to
    the Administrative Agent, insuring the  lien  granted pursuant to the Alaska
    Deed of Trust and the most recent survey covering the Refinery Premises.

         (h)  Miscellaneous.  Such other documents or conditions precedent which
    the Administrative Agent may reasonably have requested  or  require  in  its
    sole discretion.

    Section 3.03   Conditions Precedent to Each Loan.  At the time of the making
by  such  Lender  of  each  Loan,  including  the initial Loan but not including
continuations or conversions pursuant to  Section  2.11 (before as well as after
giving effect to such Loan and to the proposed use of the proceeds thereof):

         (a)  Notes.  The Company shall have issued, executed and delivered  the
    Notes;

         (b)  No Default.  There shall exist no Default or Event of Default;

         (c)  Representations and Warranties.  Except for facts timely disclosed
    to  the  Administrative  Agent  from time to time in writing, not materially
    more adverse to the Company and  its Subsidiaries than those existing on the
    Effective Date, all representations and warranties contained herein  and  in
    the  other  Financing  Documents executed and delivered on or after the date
    hereof shall be true  and  correct  in  all  material respects with the same
    effect as though such representations and warranties had been made on and as
    of the date of such Loan; and

         (d)  Documentation.  The Administrative Agent shall have received  such
    other documents as the Administrative Agent or any Lender or special counsel
    to  the  Administrative  Agent  may  reasonably  request,  all  in  form and
    substance satisfactory to the Administrative Agent.

    Each Borrowing Request submitted by  the  Company, and the acceptance by the
Company of the proceeds of such Borrowing (but not  including  continuations  or
conversions  pursuant  to  Section  2.11), shall constitute a representation and
warranty by the Company, as of the  date of the Loans comprising such Borrowing,
that  the  conditions  specified  in  Subsections  3.03(b)  and  (c)  have  been
satisfied.

    Section  3.04   Recordings.   The  Security  Instruments  and   accompanying
financing  statements  covering the Mortgaged Property, or other notices related
thereto if necessary  or  appropriate,  shall  have  been  duly delivered by the
Administrative Agent to the appropriate offices for filing or recording.


                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

    In order to induce the Lenders to enter into  this  Agreement,  the  Company
represents  and  warrants  to  the Lenders (which representations and warranties
will survive the delivery of the Notes) that:

                                      -44-

    Section  4.01   Corporate  Existence.    The   Company   and   each  of  its
Subsidiaries are corporations duly  organized,  legally  existing  and  in  good
standing  under the laws of the 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, except where the failure to be so qualified would not have a Material
Adverse Effect.

    Section 4.02   Corporate Power and Authorization.  The Company is authorized
and  empowered  to  create  and  issue  the  Notes;  the Company and each of its
Subsidiaries are duly authorized and  empowered  to execute, deliver and perform
the Financing Documents, including this Agreement, to  which  they  respectively
are  parties;  and  all corporate action on the Company's part requisite for the
due creation and  issuance  of  the  Notes  on  the  Company's  and  each of its
Subsidiaries' respective part requisite for  the  due  execution,  delivery  and
performance  of  the Financing Documents, including this Agreement, to which the
Company and each of its Subsidiaries  respectively are parties has been duly and
effectively taken.

    Section 4.03   Binding Obligations.  This Agreement does, and the Notes  and
other  Financing  Documents  to  which  the Company and each of its Subsidiaries
respectively are parties upon  their  creation, issuance, execution and delivery
will, when issued and delivered  under  this  Agreement,  constitute  valid  and
binding  obligations  of  the  Company  and each such Subsidiary that is a party
thereto,  respectively,  and  will  be  enforceable  in  accordance  with  their
respective terms (except  that  enforcement  may  be  subject  to any applicable
bankruptcy, insolvency or similar laws generally affecting  the  enforcement  of
creditors' rights and subject to the availability of equitable remedies).

    Section  4.04   No  Legal  Bar  or  Resultant Lien.  The Notes and the other
Financing Documents, including this Agreement,  to  which  the Company or any of
its Subsidiaries is a party do not and will not  violate  or  create  a  default
under  any  provisions of the articles or certificate of incorporation or bylaws
of  the  Company  or  any  of  its  Subsidiaries,  or  any  contract, agreement,
instrument or Governmental Requirement to  which  the  Company  or  any  of  its
Subsidiaries  is  subject,  or  result in the creation or imposition of any Lien
upon any Properties of the Company or  any of its Subsidiaries, other than those
violations  and  defaults  that  would  not  affect  the   Company's   or   such
Subsidiaries' use of such Properties or those permitted by this Agreement.

    Section  4.05   No  Consent.   Except  as  set  forth  on Schedule 4.05, the
Company's and  each  of  its  Subsidiaries'  respective  execution, delivery and
performance of the Notes and  the  other  Financing  Documents,  including  this
Agreement,  to  which  the  Company  and  each  such Subsidiary respectively are
parties do  not  require  notice  to  or  filing  or  registration  with, or the
authorization, consent or approval of or  other  action  by  any  other  Person,
including, but not limited to, any Governmental Authority.

    Section 4.06   Financial Information.

         (a)  Annual  Financial  Statements.   The consolidated balance sheet of
    the Company and its Subsidiaries  as  of  December 31, 1995, and the related
    consolidated statements of income, retained earnings and cash flows for  the
    12-month period then ended, including in each case the related schedules and
    notes,  reported  on  by  Deloitte  & Touche, true copies of which have been
    previously delivered to each of the Lenders, fairly present the consolidated
    financial condition of  the  Company  and  its  Subsidiaries  as at the date
    thereof and the consolidated results of operations and the  cash  flows  for
    such  period,  in  accordance  with generally accepted accounting principles
    applied on a consistent basis.  The unaudited consolidating balance sheet of
    the Consolidating

                                      -45-

    Statement Entities  as  of  December  31,  1995,  and  the related unaudited
    consolidating statements of income and cash flows, form  the  basis  of  the
    Company's  consolidated  financial  statements  and are fairly stated in all
    material respects when considered in relation thereto.

         (b)  No Material Adverse Effect.   Since  December  31, 1995, there has
    been no event or occurrence that could reasonably  be  expected  to  have  a
    Material Adverse Effect.

    Section  4.07   Investments  and Guaranties.  At the date of this Agreement,
neither the Company nor  any  of  its  Subsidiaries  has  made investments in or
advances to any Person or guaranties of the obligations of any  Person  that  is
not  a  Subsidiary of the Company, except those permitted by Subsections 6.09(b)
through (f),  those  reflected  in  the  Financial  Statements  or  described in
Schedule 4.07.

    Section 4.08   Litigation.  Except as set forth in Schedule 4.08,  there  is
no  action,  suit  or  proceeding,  or  any  governmental  investigation  or any
arbitration,  in  each  case  pending  or,  to  the  knowledge  of  the Company,
threatened against the Company or  any  of  its  Subsidiaries  or  any  material
Property  of  any  thereof  before  any  court or arbitrator or any Governmental
Authority which (i) challenges  the  validity  of  this Agreement, any Note, any
Application, the Guaranty Agreement, or any of the other Financing Documents  or
(ii) if adversely determined would have a Material Adverse Effect.

    Section  4.09   Use of Proceeds.  The proceeds of the Revolving Credit Loans
will be  used  only  to  refinance  the  Existing  Indebtedness, provide working
capital and for general corporate purposes of  the  Loan  Parties,  and  to  the
extent specifically permitted hereunder, Non-Guarantors and after the occurrence
of  both the Mandate Event and the Collection Event pay-off up to $15,000,000 of
principal outstanding under the  Subordinated  Debentures and the Exchange Notes
in the aggregate.  The Letters of Credit shall be used  only  for  the  purposes
provided  in  Section  2.03.  Neither the Company nor any of its Subsidiaries is
engaged principally, or as one of  its  important activities, in the business of
extending credit for the purpose, whether immediate, incidental or ultimate,  of
buying or carrying Margin Stock (within the meaning of Regulation U or X) and no
part  of  the  proceeds  of  any Loan hereunder will be used to buy or carry any
Margin Stock.  Neither  the  Company  nor  any  Person  acting  on behalf of the
Company has taken or will take any action which might cause the Notes or any  of
the  Financing Documents, including this Agreement, to violate Regulation U or X
or any other regulation of the Board  of Governors of the Federal Reserve System
or to violate Section 7 of  the  Securities  and  Exchange  Commission  (or  any
successor  thereto) or any rule or regulation thereunder, in each case as now in
effect or as the same may hereinafter be in effect.

    Section 4.10   Compliance  with  ERISA.   Neither  the  Company,  any of its
Subsidiaries nor any ERISA Affiliate sponsors, maintains or contributes  to,  or
has  at  any  time  in  the six-year period preceding the date of this Agreement
sponsored, maintained or contributed  to,  any  Plan, including, but not limited
to, any Plan which is a "multi-employer plan" as such term is defined in Section
3(37) or 4001(a)(3) of ERISA.  Except as set forth in Schedule 4.10,  each  Plan
described  in  such  schedule has been terminated with no resulting liability to
the PBGC.  No act, omission  or  transaction  has occurred which could result in
imposition on the Company, any  of  its  Subsidiaries  or  any  ERISA  Affiliate
(whether  directly  or directly) of (i) either a civil penalty assessed pursuant
to Sections 502(c) or 502(i) of ERISA  or a tax imposed pursuant to Section 4975
of the Code, or (ii) breach of fiduciary duty liability  damages  under  Section
409 of ERISA, which in each case would have a Material Adverse Effect.

    Section   4.11   Taxes;   Governmental   Charges.    The   Company  and  its
Subsidiaries have filed all tax  returns  and  reports  required to be filed and
have paid all taxes, assessments, fees and other governmental

                                      -46-

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  if required in accordance
with generally accepted accounting principles for the  payment  thereof,  except
such  interest and penalties as are being contested in good faith by appropriate
actions or proceedings and for  which  adequate reserves for the payment thereof
as required by general accepted accounting principles have been provided.

    Section  4.12   Titles,  etc.   The  Company  and  its   Subsidiaries   have
indefeasible  title  to  their  respective  material  (individually  or  in  the
aggregate)  Properties, free and clear of all Liens except (i) Liens referred to
in the Financial Statements,  (ii)  Liens  disclosed  to the Lenders in Schedule
4.12, (iii) Liens and minor irregularities in  title  which  do  not  materially
interfere  with  the  occupation,  use  and  enjoyment  by  the  Company  or any
Subsidiary of the Company of  any  of  their respective Properties in the normal
course of business as presently conducted or materially impair the value thereof
for such business, or (iv) Liens otherwise permitted  or  contemplated  by  this
Agreement or the other Financing Documents.

    Section 4.13   Defaults.  Neither the Company nor any of its Subsidiaries is
in default nor has any event or circumstance occurred which, but for the passage
of  time  or  the  giving of notice, or both, would constitute a default (in any
respect that would have  a  Material  Adverse  Effect)  under any loan or credit
agreement, indenture, mortgage, deed  of  trust,  security  agreement  or  other
instrument  or  agreement  evidencing  or  pertaining to any Indebtedness of the
Company  or  any  of  its  Subsidiaries,  or  under  any  material  agreement or
instrument to which the Company or any of its Subsidiaries  is  a  party  or  by
which  the  Company  or any of its Subsidiaries is bound, except as disclosed to
the Lenders  in  Schedule  4.13.   No  Default  hereunder  has  occurred  and is
continuing.

    Section 4.14   Casualties; Taking of Properties.   Since  the  date  of  the
Financial  Statements, neither the business nor the Properties of the Company or
any of its Subsidiaries have been  affected  in  a  manner that has had or would
have a Material Adverse Effect as a result of any fire,  explosion,  earthquake,
flood, drought, windstorm, accident, strike or other labor disturbance, embargo,
requisition  or  taking  of  Property  or  cancellation of contracts, permits or
concessions by any domestic or  foreign  government or any agency thereof, riot,
activities of armed forces or acts of God or of any public enemy.

    Section 4.15   Compliance with the Law. Neither the Company nor any  of  its
Subsidiaries:

         (a)  is in violation of any Governmental 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 would have (in the event that  such  a  violation  or
failure  were  asserted  by  any  Person  through appropriate action) a Material
Adverse Effect.

    Section 4.16   No Material Misstatements.  No information, exhibit or report
furnished to the Administrative Agent or  the  Lenders by or at the direction of
the Company or any of its Subsidiaries in connection  with  the  negotiation  of
this  Agreement  contained  any  material  misstatement  of  fact  or, when such
statement is considered  with  all  other  written  statements  furnished to the
Lenders in that connection, omitted  to  state  a  material  fact  or  any  fact
necessary to make the statement contained therein not misleading.

                                      -47-

    Section  4.17   Investment  Company  Act.  The Company is not an "investment
company"  or  a  company  "controlled"   by  an  "investment  company"  that  is
incorporated in or organized under the laws of the United States or any "State,"
as those terms are defined in the Investment Company Act of  1940,  as  amended.
The execution and delivery by the Company and its Subsidiaries of this Agreement
and  the  other  Financing  Documents to which they respectively are parties and
their respective performance of the  obligations  provided for therein, will not
result in a violation of the Investment Company Act of 1940, as amended.

    Section 4.18   Public Utility Holding Company Act.  The  Company  is  not  a
"holding  company,"  or  a  "subsidiary  company"  of a "holding company," or an
"affiliate" of a "holding company"  or  of  a "subsidiary company" of a "holding
company," or a "public utility" within the meaning of the Public Utility Holding
Company Act of 1935, as amended.

    Section 4.19   Subsidiaries.  The Company has no Subsidiaries  except  those
shown  in Exhibit C hereto, which exhibit is complete and accurate.  The Company
owns 100% of all stock of the Subsidiaries listed in such Exhibit, except as set
forth therein.

    Section  4.20   Insurance.   Schedule  4.20   attached  hereto  contains  an
accurate and complete description of all material policies of  fire,  liability,
workmen's  compensation,  casualty, flood, business interruption and other forms
of insurance owned or held  by  the  Company  and each of its Subsidiaries.  All
such policies are in full force and effect, all premiums  with  respect  thereto
have  been  paid  in  accordance  with  their respective terms, and no notice of
cancellation or termination has been  received  with respect to any such policy.
Such policies are sufficient for compliance with all requirements of law and  of
all  agreements  to which the Company or any of its Subsidiaries is a party; are
valid, outstanding and enforceable policies; provide adequate insurance coverage
in at least such amounts and against  at  least such risks (but including in any
event public liability) as are usually insured against in the same general  area
by  companies  engaged  in  the  same  or  a similar business for the assets and
operations of the Company and each of  its Subsidiaries; and will not in any way
be  affected  by,  or  terminate  or  lapse  by  reason  of,  the   transactions
contemplated by this Agreement.  Schedule 4.20 identifies all material risks, if
any,  which  the  Company  and  its  Subsidiaries  and their respective Board of
Directors or  officers  have  designated  as  being  self  insured.  Neither the
Company nor any of its Subsidiaries has been unable to obtain any insurance with
respect to its assets or operations, nor has its  coverage  been  limited  below
usual and customary policy limits during the last three years.

    Section  4.21   Mortgaged  Property.   Substantially  all  of  the Mortgaged
Property is described in and covered by the engineering or other written reports
which have previously  been  delivered  to  and  relied  upon  by the Lenders in
connection with this Agreement.

    Section 4.22   Gas Imbalances.  Except as disclosed  to  the  Administrative
Agent  in  Schedule  4.22,  there  are  no  gas imbalances, take or pay or other
prepayments owed by the Company  in  excess  of $5,000,000 in the aggregate with
respect to the Mortgaged Property (or in  the  case  of  any  of  the  Mortgaged
Property operated by a Person other than the Company or its Subsidiaries, to the
best  of  the  Company's  knowledge)  which  would  require  the  Company or its
Subsidiaries to deliver Hydrocarbons produced from any of the Mortgaged Property
at some future time without then or thereafter receiving full payment therefor.

    Section 4.23   Environmental Matters.

                                      -48-

         (a)  Environmental Laws, etc.  Neither  any  Property of the Company or
    its Subsidiaries nor the operations conducted thereon violate any applicable
    order of any court or Governmental Authority or  Environmental  Laws,  which
    violation  could reasonably be expected to have a Material Adverse Effect or
    which could reasonably be expected  to result in remedial obligations having
    a Material Adverse Effect assuming disclosure to the applicable Governmental
    Authority of all relevant  facts,  conditions  and  circumstances,  if  any,
    pertaining to the relevant Property.

         (b)  No Litigation.  Without limitation of Subsection (a) above, except
    as  set  forth  on  Schedule  4.23,  no  Property  of  the  Company  or  its
    Subsidiaries  nor the operations currently conducted thereon or by any prior
    owner or operator of  such  Property  or  operation,  are in violation of or
    subject to any existing, pending or threatened action, suit,  investigation,
    inquiry or proceeding by or before any court or Governmental Authority or to
    any  remedial obligations under Environmental Laws, which violation, action,
    suit, investigation, inquiry or  proceeding  could reasonably be expected to
    have a Material Adverse Effect or which  could  reasonably  be  expected  to
    result  in  remedial  obligations  having a Material Adverse Effect assuming
    disclosure to the applicable  Governmental  Authority of all relevant facts,
    conditions and circumstances, if any, pertaining to the relevant Property.

         (c)  Notices, Permits, etc.  All notices, permits, licenses or  similar
    authorizations,  if  any, required to be obtained or filed by the Company or
    its Subsidiaries in connection  with  the  operation  or  use of any and all
    Property of the Company or its Subsidiaries, including but  not  limited  to
    past  or  present  treatment,  storage,  disposal  or release of a hazardous
    substance or solid waste into  the  environment,  have been duly obtained or
    filed except to the extent the failure  to  obtain  or  file  such  notices,
    permits, licenses or similar authorizations could not reasonably be expected
    to  have  a Material Adverse Effect or which could reasonably be expected to
    result in remedial  obligations  having  a  Material Adverse Effect assuming
    disclosure to the applicable Governmental Authority of all  relevant  facts,
    conditions and circumstances, if any, pertaining to the relevant Property.

         (d)  Hazardous  Substances Carriers.  All hazardous substances or solid
    waste generated at any and all  Property  of the Company or its Subsidiaries
    have in the past been transported, treated and disposed of only by  carriers
    maintaining valid permits under RCRA and any other Environmental Law, except
    to  the  extent  the  failure  to have such substances or waste transported,
    treated or disposed by  such  carriers  could  not reasonably be expected to
    have a Material Adverse Effect, and only at treatment, storage and  disposal
    facilities  maintaining valid permits under RCRA and any other Environmental
    Law, which carriers and facilities have been and are operating in compliance
    with such permits, except to the  extent the failure to have such substances
    or waste treated, stored or disposed at such facilities, or the  failure  of
    such  carriers or facilities to so operate, could not reasonably be expected
    to have a Material Adverse Effect  or  which could reasonably be expected to
    result in remedial obligations having a  Material  Adverse  Effect  assuming
    disclosure  to  the applicable Governmental Authority of all relevant facts,
    conditions and circumstances, if any, pertaining to the relevant Property.

         (e)  Hazardous Substances Disposal.   The  Company and its Subsidiaries
    have taken all reasonable steps necessary to determine and  have  determined
    that  no  hazardous  substances  or  solid  waste  have  been disposed of or
    otherwise released and there has been no threatened release of any hazardous
    substances on or to any Property  of  the Company or its Subsidiaries except
    in compliance with Environmental Laws, except to the extent the  failure  to
    do  so could not reasonably be expected

                                      -49-

    to  have  a Material Adverse Effect or which could reasonably be expected to
    result in remedial  obligations  having  a  Material Adverse Effect assuming
    disclosure to the applicable Governmental Authority of all  relevant  facts,
    conditions and circumstances, if any, pertaining to the relevant Property.

         (f)  OPA  Requirements.   Except to the extent the failure to so comply
    would not have a  Material  Adverse  Effect,  to  the extent applicable, the
    Company and its Subsidiaries have complied with all  design,  operation  and
    equipment  requirements  imposed  by  OPA  or scheduled to be imposed by OPA
    during the term of this Agreement,  and  the Company does not have reason to
    believe that either it or its Subsidiaries will not be able to maintain such
    compliance with OPA requirements during the term of this Agreement.

         (g)  No Contingent Liability.  The Company and its Subsidiaries have no
    material contingent liability in connection with any release  or  threatened
    release of any hazardous substance or solid waste into the environment other
    than such contingent liabilities at any one time and from time to time which
    could  reasonably  be  expected to exceed $1,500,000 in excess of applicable
    insurance coverage and for which  adequate  reserves for the payment thereof
    as required by GAAP have not been provided, or  which  could  reasonably  be
    expected  to result in remedial obligations having a Material Adverse Effect
    assuming disclosure to the applicable Governmental Authority of all relevant
    facts, conditions and circumstances, if  any,  pertaining to such release or
    threatened release.


                                   ARTICLE V

                             AFFIRMATIVE COVENANTS

    So long as any Lender has any  Commitment  hereunder  or  any  Loan  remains
unpaid or any Revolving Credit Exposure remains outstanding, the Company will at
all times comply with the following covenants:

    Section  5.01   Maintenance  and Compliance, etc.  The Company will and will
cause each of its Subsidiaries  to  observe  and comply in all material respects
with all Governmental Requirements, except where failure  to  do  so  could  not
reasonably  be expected to have a Material Adverse Effect.  The Company will and
will cause each Guarantor to,  except  as permitted by Section 6.07(c), preserve
and maintain its corporate existence, rights and franchises.

    Section 5.02   Payment of Taxes and Claims, etc.  The Company will pay,  and
cause  each  of  its  Subsidiaries  to  pay,  (i)  all  taxes,  assessments  and
governmental  charges  imposed upon it or upon its Property, and (ii) all claims
(including, but  not  limited  to,  claims  for  labor,  materials,  supplies or
services) which might, if unpaid, become a Lien upon its  Property,  unless,  in
each  case,  the  validity or amount thereof is being contested in good faith by
appropriate action  or  proceedings  and  the  Company  has established adequate
reserves in accordance with GAAP with respect thereto.

    Section 5.03   Further Assurances.  The Company will  and  will  cause  each
Guarantor  to  cure  promptly  any  defects  in the creation and issuance of the
Notes, and the execution and delivery of the Financing Documents, including this
Agreement, to which it is a party.  The Company at its expense will, as promptly
as practical, execute and deliver to  the Administrative Agent or the applicable
Issuing Bank

                                      -50-

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
performance of the  covenants  and  agreements  of  the  Company  or  any of its
Subsidiaries in the Financing Documents, including this Agreement, or to further
evidence and more fully describe the collateral intended  as  security  for  the
Notes or other Lender Indebtedness, or to correct any omissions in the Financing
Documents,  or more fully to state the security obligations set out herein or in
any of the Financing Documents,  or  to  perfect,  protect or preserve any Liens
created pursuant to any of the Financing Documents, or to make  any  recordings,
to  file  any  notices,  or  obtain  any  consents,  all  as may be necessary or
appropriate in connection therewith.

    Section 5.04   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  the  Financing Documents, including this
Agreement, at the time or times and in the manner specified, and cause  each  of
the  Guarantors  to  take  such  action  with respect to their obligations to be
performed  and  discharged  under   the   Financing   Documents  to  which  they
respectively are parties.

    Section 5.05   Insurance.  The Company and its Subsidiaries will maintain or
cause to be maintained, 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 (including
business interruption insurance and flood insurance) and amounts as is customary
in the case of Persons engaged  in  the same or similar businesses and similarly
situated or in accordance with any Governmental Requirement.   Upon  request  of
the  Administrative  Agent, the Company will furnish or cause to be furnished to
the Administrative Agent from time to  time  a summary of the insurance coverage
of  the  Company  and  its  Subsidiaries  in  form  and   substance   reasonably
satisfactory  to  the  Administrative  Agent  and  if requested will furnish the
Administrative Agent copies of  the  applicable  policies.   In  the case of any
fire, accident or other casualty causing loss or damage to any Properties of the
Company or its Subsidiaries (other than Tesoro Coastwide), the proceeds of  such
policies  shall  be  used,  in  the Company's sole discretion, (i) to reasonably
promptly repair or replace the  damaged  Property,  or (ii) to prepay the Lender
Indebtedness.  The Company will obtain endorsements to the  policies  pertaining
to  all  physical  Properties  in  which the Administrative Agent or the Lenders
shall have a Lien under the Financing Documents, naming the Administrative Agent
as a loss  payee  and  containing  provisions  that  such  policies  will not be
canceled without 30 days prior written notice having been given by the insurance
company to the Administrative Agent.

    Section 5.06   Accounts and Records.  The Company will keep and  will  cause
each  of  its  Subsidiaries  to keep proper books of record and account in which
full, true and  correct  entries  will  be  made  of  all  financial or business
dealings  or  transactions  in  relation  to  their  respective   business   and
activities.

    Section  5.07   Right of Inspection.  The Company will permit and will cause
each of its  Subsidiaries  to  permit  any  officer,  employee  or  agent of the
Administrative Agent or any of the Lenders to  visit  and  inspect  any  of  the
Properties  of  the Company or any of its Subsidiaries, examine the Company's or
any such Subsidiary's books  of  record  and  accounts, take copies and extracts
therefrom, and discuss the affairs, finances and accounts of the Company or  any
of   its   Subsidiaries  with  the  Company's  or  such  Subsidiary's  officers,
accountants and auditors,  as  often  and  all  at  such reasonable times during
normal business hours as may be reasonably requested by the Administrative Agent
or any of the Lenders.

                                      -51-

    Section  5.08   Operation  and  Maintenance  of   Mortgaged   Property   and
Compliance  with  Leases.   Subject  to Section 5.10, the Company will, and will
cause  each  of  its  Subsidiaries  to,  operate  its  Properties  or  cause its
Properties to be operated in accordance with prudent industry  practice  and  in
compliance  with  all  material  terms  and provisions of all applicable leases,
contracts and agreements and  in  compliance  with  all applicable proration and
conservation laws of the jurisdiction in which such Properties may be  situated,
and  all  applicable  laws,  rules  and  regulations  of  every other agency and
authority  from  time  to  time  constituted  to  regulate  the  development and
operation of such Properties,  and  as  to  any  Oil  and  Gas  Properties,  the
production and sale of Hydrocarbons and other minerals therefrom.

    Section  5.09   Stock  of  Subsidiaries.  The Company will at all times own,
directly or indirectly, 100% of all stock of all Guarantors, except as otherwise
permitted pursuant to Section 6.07.

    Section  5.10   Certain  Additional  Assurances  Regarding  Maintenance  and
Operation of Properties.  With respect to  those  Properties of the Company or a
Subsidiary of the Company which are being operated by operators other  than  the
Company  or  such  Subsidiary,  the  Company  or  such  Subsidiary  shall not be
obligated, itself, to perform any undertakings contemplated by the covenants and
agreements contained in Sections 5.02, 5.05, and 5.08 which are performable only
by such operators and are beyond the  control of the Company or such Subsidiary;
however, the Company agrees to promptly take and to  cause  such  Subsidiary  to
promptly take all reasonable actions available under any operating agreements or
otherwise to bring about the performance of any such undertakings required to be
performed under such Subsections.

    Section  5.11   Designation of Subsidiaries as Additional Guarantors.  If at
any time the Majority Lenders,  in  their  sole discretion, or the Company, with
the approval of the Administrative Agent, designate any one or more Subsidiaries
of the  Company  (other  than  a  Non-Guarantor  Subsidiary)  to  be  additional
Guarantors,  the  Company  shall  cause  any  such newly designated Guarantor to
execute,  within  30  days  of   such   designation,  a  guaranty  agreement  in
substantially the same form as the Guaranty Agreement executed by the Guarantors
in connection with this Agreement.

    Section 5.12   Minimum Capital Expenditures.  The Company and  each  of  its
Subsidiaries shall make capital expenditures in accordance with prudent industry
practice for the development of their Proved Undeveloped Hydrocarbon Reserves.

    Section  5.13   Payment  of Charters and Tariffs.  The Company will pay, and
will cause each of its Subsidiaries  to  pay  before  or when due (i) the amount
owed for the time charter of any tanker or barge used to  transport  feedstocks,
blendstocks  or  refined  products  and  (ii)  the  tariff owed by any Inventory
Borrowing Base party for the  transport  or  storage of any inventory, including
but not limited to, the  tariff  owed  by  Tesoro  Alaska  to  the  Trans-Alaska
Pipeline  System,  unless  in each case, the validity or amount thereof is being
contested in good faith by appropriate action or proceedings and the Company has
established appropriate reserves in accordance with GAAP.

    Section 5.14   Title Opinions.  Within 90  days  after the Closing Date, the
attorneys who furnished the title opinions required pursuant to Section  3.02(f)
will  provide  to  the  Administrative Agent a supplemental opinion stating that
there has been no change  in  the  status  of  title from that reflected in such
opinions through the filing and  recordation  of  the  E&P  Mortgage  and  that,
subject  only  to the liens referenced in such earlier title opinions, the Liens
granted by the E&P Mortgage are first priority.

    Section  5.15   Reporting  Covenants.   The  Company  will  furnish  to each
Lender:

                                      -52-

         (a)  Annual Financial Statements.  As soon  as  available  and  in  any
    event  within 105 days after the end of each calendar year of the Company, a
    consolidated balance sheet of the Company and its Subsidiaries as at the end
    of such year and  the  related  consolidated  statements of income, retained
    earnings and cash flows  of  the  Company  and  its  Subsidiaries  for  such
    calendar  year,  setting  forth in each case in comparative form the figures
    for the previous calendar year, all  in reasonable detail and accompanied by
    a  report  thereon  of  Deloitte  &  Touche  or  other  independent   public
    accountants  of  comparable  recognized national standing, which such report
    shall state that such  consolidated  financial statements present fairly the
    consolidated financial condition as at the end of such  calendar  year,  and
    the consolidated results of operations and cash flow for such calendar year,
    of  the  Company  and its Subsidiaries in accordance with GAAP, applied on a
    consistent basis.  At the same  time,  a  consolidating balance sheet of the
    Consolidating Statement Entities as at the end  of  such  year  and  related
    consolidating  statements  of  income and a schedule of consolidating EBITDA
    for  such  calendar  year,  accompanied  by  a  certification  thereon  of a
    Responsible Officer, stating that such  consolidating  financial  statements
    and  EBITDA  schedule form the basis of the Company's consolidated financial
    statements and EBITDA calculations,  and  are  fairly stated in all material
    respects when considered in relation thereto.

         (b)  Quarterly Financial Statements.  As soon as available and  in  any
    event  within  60  days  after  the  end of each of the first three calendar
    quarters of the Company, a consolidated balance sheet of the Company and its
    Subsidiaries as at the  end  of  such  quarter  and the related consolidated
    statements of income, retained earnings and cash flows of  the  Company  and
    its  Subsidiaries  for  such  calendar  quarter  and  for the portion of the
    Company's calendar year ended at the  end  of such quarter, setting forth in
    each case in comparative form the figures for the corresponding quarter  and
    the  corresponding  portion  of the Company's previous calendar year and, in
    the case  of  the  balance  sheet  only,  the  last  day  of the immediately
    preceding  fiscal  year,  all  in  reasonable  detail  and  certified  by  a
    Responsible Officer that such financial statements are complete and  correct
    and  fairly  present  the  consolidated financial condition as at the end of
    such calendar quarter, and the  consolidated  results of operations and cash
    flows for such calendar quarter and such portion of the  Company's  calendar
    year,  of  the Company and its Subsidiaries in accordance with GAAP (subject
    to normal, year-end adjustments).  At the same time, a consolidating balance
    sheet of the Consolidating Statement  Entities  at  the end of such calendar
    quarter and related consolidating statements of income  and  a  schedule  of
    consolidating  EBITDA,  for the portion of the Company's calendar year ended
    at such quarter accompanied  by  a  certification from a Responsible Officer
    that such consolidating financial statements and EBITDA  schedule  form  the
    basis   of  the  Company's  consolidated  financial  statements  and  EBITDA
    calculations, and are fairly stated in all material respects when considered
    in relation thereto.

         (c)  No Default/Compliance  Certificate.   Together  with the financial
    statements required pursuant to subsections (a) and (b) above, a certificate
    of a Responsible Officer  (i)  stating  that  a  review  of  such  financial
    statements  during  the  period covered thereby and of the activities of the
    Company and its Subsidiaries has  been made under such Responsible Officer's
    supervision  with  a  view  to  determining  whether  the  Company  and  its
    Subsidiaries have fulfilled all of their obligations under  this  Agreement,
    the  other Financing Documents, and the Notes; (ii) stating that the Company
    and its Subsidiaries have fulfilled their obligations under such instruments
    and that all representations made in  this Agreement continue to be true and
    correct (or specifying the nature of any change), or if  there  shall  be  a
    Default  or  Event  of Default, specifying the nature and status thereof and
    the Company's proposed response  thereto;  (iii) demonstrating in reasonable
    detail

                                      -53-
    compliance   (including,   but   not   limited   to,  showing  all  material
    calculations) as at the end of  such  calendar year or such calendar quarter
    with Sections 6.01, 6.02, 6.03 and 6.04; and (iv) containing or  accompanied
    by  such  financial  or  other  details,  information  and  material  as the
    Administrative Agent may reasonably request to evidence such compliance.

         (d)  Auditors' No  Default  Certificate;  Management Letters.  Together
    with the financial statements required pursuant to subsection (a)  above,  a
    certificate  of  the  independent  public accountants who audited the annual
    report referred to therein to the  effect that their audit has not disclosed
    the existence of an Event of Default or a Default under this  Agreement,  or
    if  there  exists an Event of Default or a Default hereunder, specifying the
    nature  thereof;  and  if  there  exists  an  Event  of  Default  or Default
    hereunder, copies of each management letter issued to the  Company  by  such
    accountants  promptly  following  consideration  or  review  by the Board of
    Directors of  the  Company,  or  any  committee  thereof  (together with any
    response thereto prepared by the Company).

         (e)  Engineering Reports.  Promptly after December 31st and  June  30th
    of  each  year, but in no event later than 60 days after such date, a report
    (the "Reserve Report") in  form  and  substance satisfactory to the Majority
    Lenders and in the case of  the  December  31  Reserve  Report  prepared  by
    Netherland, Sewell & Associates or other independent petroleum consultant(s)
    acceptable  to  the  Majority  Lenders  (the  previous  acceptability  of an
    independent petroleum consultant satisfactory  to the Majority Lenders shall
    have no bearing on such consultant's present or future acceptability), which
    Reserve Report shall evaluate  the  Hydrocarbon  reserves  included  in  the
    Mortgaged  Property  as of each such date and which shall, together with any
    other information reasonably requested  by  any  Lender, set forth the total
    Proved Hydrocarbon reserves  by  accepted  and  customary  reserve  category
    attributable  to  such Mortgaged Property, together with a projection of the
    rate of production and future  net  income  with  respect thereto as of each
    such date.  The June 30 Reserve Report shall be prepared by the  engineering
    staff of the Company and shall update the most recent Reserve Report.

         (f)  Title  Information.   Within  a reasonable time after a request by
    the Administrative Agent, additional title information in form and substance
    acceptable to the Majority Lenders  as  is reasonably necessary covering the
    Mortgaged Property so that the Lenders shall have  received,  together  with
    the title information previously received by the Lenders, satisfactory title
    information covering all of the Mortgaged Property.

         (g)  Events  or  Circumstances  with  respect  to  Mortgaged  Property.
    Promptly  after  the  occurrence of any event or circumstance (other than as
    known to affect oil and gas  prices generally) concerning or changing any of
    the Mortgaged Property that would have a Material Adverse Effect, notice  of
    such event or circumstance in reasonable detail.

         (h)  Bi-Weekly Borrowing Base Reports.

              (i)  As  soon  as  available  and  in  any  event  by the Thursday
         following the close of each two  calendar week period, a Borrowing Base
         Report dated and reflecting amounts as of  the  close  of  business  on
         Thursday of the preceding calendar week.

              (ii) As  soon as available and in any event by the 105th day after
         the end of the fourth calendar  quarter  of  each year and the 60th day
         after the end of each of the first three

                                      -54-

         calendar quarters of each year of the Company,  a  quarterly  Borrowing
         Base  Report  dated  and  reflecting amounts as of the last day of such
         calendar  year  or  quarter,  as  the  case  may  be,  which  have been
         reconciled to the financial statements delivered pursuant to Subsection
         5.15(a) or (b), as the case may be.

         (i)  Notice of Certain Events.  Promptly after the  Company  learns  of
    the  receipt  or  occurrence  of  any  of  the following, a certificate of a
    Responsible Officer specifying  (i)  any  official  notice of any violation,
    possible violation, non-compliance or possible non-compliance, or claim made
    by any  Governmental  Authority  pertaining  to  all  or  any  part  of  the
    Properties  of  the  Company  or any of its Subsidiaries which, if adversely
    determined, would have  a  Material  Adverse  Effect;  (ii)  any event which
    constitutes a  Default  or  Event  of  Default,  together  with  a  detailed
    statement  specifying  the  nature thereof and the steps being taken to cure
    such Default or Event of Default;  (iii)  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 in excess of $1,000,000 of the
    Company or any  of  its  Subsidiaries  with  respect  to  a claimed default,
    together with a detailed statement specifying  the  notice  given  or  other
    action  taken  by such holder and the nature of the claimed default and what
    action the Company or  its  Subsidiary  is  taking  or proposes to take with
    respect thereto; (iv) any default or noncompliance of any party  to  any  of
    the  Financing Documents with any of the terms and conditions thereof or any
    notice of termination or other proceedings or actions which could reasonably
    be expected to adversely  affect  any  of  the  Financing Documents; (v) the
    creation, dissolution, merger  or  acquisition  of  any  Subsidiary  of  the
    Company with material operations; (vi) any event or condition which violates
    any  Environmental  Law  and which could potentially have a Material Adverse
    Effect or which could  potentially  result  in remedial obligations having a
    Material Adverse Effect, assuming disclosure to the applicable  Governmental
    Authority  of  all  relevant  facts,  conditions  and circumstances, if any,
    pertaining to such event or condition; or (vii) any event or condition which
    may reasonably be expected to have a Material Adverse Effect.

         (j)  Shareholder  Communications,  Filings,  etc.   Promptly  upon  the
    mailing or filing thereof, copies  of  all financial statements, reports and
    proxy statements mailed to the Company's shareholders,  and  copies  of  all
    registration statements, periodic reports and other documents (excluding the
    related   exhibits   except   to  the  extent  expressly  requested  by  the
    Administrative Agent) filed with  or  received  by the Company in connection
    therewith from the Securities and  Exchange  Commission  (or  any  successor
    thereto) or any national securities exchange.

         (k)  Litigation.   Promptly after (i) the occurrence thereof, notice of
    the institution of or any  material  adverse development in any action, suit
    or proceeding or any governmental investigation or any  arbitration,  before
    any  court  or arbitrator or any governmental or administrative body, agency
    or official, against the Company, any  Guarantor or any material Property of
    any thereof; or (ii) actual knowledge thereof, notice of the threat  of  any
    such  action, suit, proceeding, investigation or arbitration, in either case
    in which the amount involved is material  and is not covered by insurance or
    which, if adversely determined, would have a Material Adverse Effect.

         (l)  ERISA.  Promptly after (i) the Company's  obtaining  knowledge  of
    the  occurrence  thereof,  notice  that  an  ERISA  Termination  Event  or a
    "prohibited transaction," as such term is defined in Section 406 of ERISA or
    Section 4975 of the Code, with respect  to any Plan has occurred, which such
    notice shall specify the nature thereof,  the  Company's  proposed  response
    thereto  and,  where  known,  any  action  taken or proposed by the Internal
    Revenue Service, the Department of

                                      -55-

    Labor or the PBGC  with  respect  thereto,  and (ii) the Company's obtaining
    knowledge thereof, copies of any notice of the PBGC's intention to terminate
    or to have a trustee appointed to administer any Plan.

         (m)  Borrowing Base Audit.  Each calendar year, as  of  a  date  to  be
    designated  by  the  Agent,  at  the  cost  of  the  Company, a report of an
    independent collateral field examiner  approved  by the Administrative Agent
    in writing and reasonably acceptable  to  the  Company  (which  may  be  the
    Administrative  Agent  or an affiliate thereof) with respect to the Eligible
    Accounts and Eligible Inventory  components  included in the Borrowing Base,
    and  the  Administrative  Agent  shall  have  the  option  to  receive  such
    additional reports as the Administrative Agent or the Majority Lenders shall
    reasonably request; provided, however,  that  so  long  as  no  Default  has
    occurred  and  is  continuing,  neither  the  Administrative  Agent  nor the
    Majority Lenders shall request more  than  one such additional report (for a
    total of two such reports) per calendar year.

         (n)  Other  Information.   With  reasonable  promptness,   such   other
    information  about  the  business and affairs and financial condition of the
    Company or its Subsidiaries as  any  Lender may reasonably request from time
    to time.

                                   ARTICLE VI

                               NEGATIVE COVENANTS


So long as any Lender has any Commitment hereunder or any Loan remains unpaid or
any Revolving Credit Exposure remains outstanding, the Company will not:

    Section  6.01   Consolidated  Tangible  Net  Worth.    Permit   Consolidated
Tangible  Net  Worth  as  of  the  end  of  any calendar quarter to be less than
$125,000,000 plus 75% of  the  Company's  consolidated net income aggregated for
each of the calendar quarters from and after April 1, 1996 in which consolidated
net income is positive; provided if  at  any  time  the  Company  issues  equity
securities  of  any kind, such minimum amount of Consolidated Tangible Net Worth
shall be permanently  increased  by  an  amount  equal  to  75%  of the net cash
proceeds from the issuance of such equity securities, except that to the  extent
such proceeds are used as permitted in clause (iii) of Section 6.08, such amount
shall  not so increase the minimum Consolidated Tangible Net Worth; and provided
further, that such amount of  minimum  Consolidated  Tangible Net Worth shall be
adjusted so as to remove the effect of any  accounting  adjustments  that  would
otherwise result from the retirement of the Subordinated Debentures and Exchange
Notes due to write-offs of original issue discount or deferred financing costs.

    Section   6.02   Consolidated  Current  Ratio.   Permit  the  ratio  of  (i)
consolidated current assets to  (ii) consolidated current liabilities (excluding
current maturities of the Notes) to be less than 1.3 to 1.0  at  any  time.   As
used  in this Section 6.02 "consolidated current assets" shall mean assets which
would, in accordance with GAAP, be  included as current assets on a consolidated
balance sheet of the Company and  its  Subsidiaries  and  "consolidated  current
liabilities"  shall  mean  liabilities  which would, in accordance with GAAP, be
included as current liabilities on  a  consolidated balance sheet of the Company
and its Subsidiaries.

    Section 6.03   Consolidated Cash Flow Coverage Ratio.  Permit  a  cash  flow
coverage ratio for itself and its Subsidiaries on a consolidated basis as of any
Quarterly Date to be less than 1.10 to 1.00 for

                                      -56-

the Rolling Period ending on  the  applicable  Quarterly  Date.  As used in this
Section 6.03, "cash flow coverage ratio" shall mean, as to the Company, and  for
the  Rolling  Period  ending on such Quarterly Date, the ratio of (i) the sum of
(A) Cash Flow of the Company and  its Subsidiaries on a consolidated basis, plus
(B) the difference between the Maximum Revolving Credit Loan Available Amount on
the last day of the applicable Rolling  Period  and  the  outstanding  principal
amount  of  the  Revolving  Credit  Loans  on the first day of the last calendar
quarter of such Rolling Period, plus (C) interest expense of the Company and its
Subsidiaries on a consolidated basis to  (ii) the sum of (A) regularly scheduled
principal payments of Funded Indebtedness paid in cash, plus (B)  cash  interest
expense  of  the  Company and its Subsidiaries on a consolidated basis, plus (C)
capital expenditures by  the  Company  and  its  Subsidiaries  on a consolidated
basis, excluding capital expenditures made by way of exchanges of  equity,  plus
(D)  cash  dividends  actually  paid  by  the  Company and its Subsidiaries on a
consolidated basis.

    Section   6.04   Consolidated   Interest   Coverage   Ratio.    Permit   its
consolidated interest coverage ratio as of  the  end of any Rolling Period to be
less than 2.5 to 1.0.  As used in  this  Section  6.04,  "consolidated  interest
coverage  ratio"  shall  mean  the ratio of (i) EBITDA for the Rolling Period to
(ii) cash payments made by  the  Company  and  its Subsidiaries for interest for
such Rolling Period.

    Section 6.05   Indebtedness.  Create, incur, assume or suffer to  exist,  or
permit  any of its Subsidiaries to create, incur, assume or suffer to exist, any
Indebtedness, other than:

         (a)  the Lender Indebtedness;

         (b)  Indebtedness outstanding on the  date  hereof  which is set out in
    the Company's financial statements referred to  in  Section  4.06(a)  or  on
    Schedule  6.05  and any renewal, extension, refinancing or refunding of such
    Indebtedness; provided that (A)  the  principal  amount of such Indebtedness
    that renews, extends, refinances or refunds any such Indebtedness shall  not
    exceed   the  principal  amount  of  such  renewed,  extended,  refunded  or
    refinanced Indebtedness, plus up to  5%  to  cover the costs associated with
    such renewal, extension, refinancing or refunding of such  Indebtedness  and
    (B)  the  Indebtedness  that  renews,  extends,  refinances  or refunds such
    Indebtedness  is  scheduled  to  mature   no   earlier  and  shall  be  upon
    substantially the same or no less  favorable  terms  than  the  Indebtedness
    being  renewed, extended, refinanced or refunded; provided further, that for
    purposes of this Section 6.05(b) only, if the Subordinated Debentures and/or
    the Exchange Notes are prepaid in  full, the Borrower may issue subordinated
    notes upon substantially the same  or  no  less  favorable  terms  than  the
    Subordinated  Debentures or Exchange Notes and in an aggregate amount not to
    exceed $100,000,000 less  the  amount,  if  any,  on either the Subordinated
    Debentures or Exchange Notes, if both are not prepaid;

         (c)  accounts payable (for the deferred purchase price of  Property  or
    services)  from time to time incurred in the ordinary course of business and
    which are not in excess of 90  days  past the invoice or billing date, or if
    in excess of 90 days past the invoice or billing date  are  being  currently
    contested  in  good  faith  by appropriate actions or proceedings diligently
    conducted;

         (d)  guaranties issued by the Company or any Subsidiary in the ordinary
    course of its business  of  obligations  of  others (other than for borrowed
    money) incurred in oil and gas drilling, oil and gas production, oil and gas
    transportation, crude oil and  refined  products  purchasing,  oil  and  gas
    exploration or other similar programs or operations;

                                      -57-

         (e)  obligations  whether  current  or long term incurred in the normal
    course of business  under  or  pursuant  to  customary  oil, gas and mineral
    leases, royalties and oil and gas operating agreements, farm-out and farm-in
    agreements, development agreements and other agreements which are  customary
    in the oil and gas industry;

         (f)  Indebtedness  created,  incurred,  assumed or guaranteed after the
    date hereof not otherwise permitted  pursuant to this Section 6.05, provided
    that the aggregate outstanding principal amount of such  Indebtedness  shall
    not exceed $10,000,000 at any one time outstanding;

         (g)  Indebtedness   owing   by   (A)   the   Company  to  Non-Guarantor
    Subsidiaries not to exceed $5,000,000  in  the aggregate, (B) any Subsidiary
    of the Company to the Company, (C) the Company to any Guarantor, and (D) any
    Guarantor to any other Guarantor;

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

         (i)  Capital  Lease  Obligations  not  to  exceed $7,500,000 at any one
    time;

         (j)  Indebtedness  relating  to  personal  injury  or  property  claims
    against the Company or any of  its  Subsidiaries  in an amount not to exceed
    $5,000,000 in the aggregate unless and to the extent such claims are covered
    by insurance;

         (k)  Indebtedness, not to  exceed  (i)  $15,000,000  in  the  aggregate
    outstanding at any one time, in respect of letters of credit (other than the
    Letters  of Credit) or bank guaranties provided by the Company or any of its
    Subsidiaries in the ordinary  course  of  business  and  used  in lieu or in
    support of performance guarantees,  performance,  surety  or  other  similar
    bonds,  or  bankers  acceptances,  and  (ii)  $5,000,000  in  the  aggregate
    outstanding  at  any  one  time, in respect of letters of credit (other than
    Letters of Credit) or bank guaranties provided  by the Company or any of its
    Subsidiaries used in lieu or in support of stay or appeal  bonds;  provided,
    however,  to  the extent Letters of Credit are used in lieu or in support of
    stay or appeal bonds, such $5,000,000  maximum amount shall be reduced by an
    amount equal to the aggregate amount of any such Letters of Credit  used  in
    lieu or support of stay or appeal bonds;

         (l)  Indebtedness   existing   in  connection  with  Hedge  Agreements,
    provided that such Hedge Agreements are  entered  into by the Company or its
    Subsidiaries in the ordinary course of  business  and  for  the  purpose  of
    hedging against fluctuations in price or interest rates.

         (m)  Non-Recourse Indebtedness of Tesoro Bolivia; and

         (n)  Indebtedness,  not  to  exceed  $15,000,000,  incurred  by  Tesoro
    Northstore, to be used for the purchase (in fee or leasehold), construction,
    and/or upgrading of retail outlet stores, subject, however, to the execution
    of  an  intercreditor  agreement  satisfactory  in form and substance to the
    Administrative Agent and Documentation Agent.

                                      -58-

    Section 6.06   Liens.  Create, incur, assume  or  suffer to exist, or permit
any of its Subsidiaries to create, incur, assume or suffer to exist, any Lien on
any of its Property now owned or hereafter acquired to secure  any  Indebtedness
of any Person, other than:

         (a)  Liens existing on the date hereof and set out on Schedule 6.06;

         (b)  Liens securing the Lender Indebtedness;

         (c)  Liens  for  taxes,  assessments  or  other governmental charges or
    levies not yet due or which are being contested in good faith by appropriate
    action or proceedings and with respect  to which adequate reserves are being
    maintained;

         (d)  statutory Liens of landlords and Liens of carriers,  warehousemen,
    mechanics,  materialmen,  repairmen, workmen, and other Liens imposed by law
    created in the ordinary course  of  business  for amounts which are not past
    due for more than 30 days or which are being  contested  in  good  faith  by
    appropriate  proceedings  and  with  respect  to  which adequate reserves in
    accordance with GAAP are being maintained;

         (e)  Liens (other than any inchoate  Lien imposed by ERISA) incurred or
    deposits or pledges made in the ordinary course of  business  in  connection
    with workers' compensation, unemployment insurance and other types of social
    security, old age or other similar obligations, or to secure the performance
    of  tenders,  statutory  obligations, surety and appeal bonds, bids, leases,
    government  contracts,  performance  and  return-of-money  bonds  and  other
    similar obligations (exclusive of  obligations  for  the payment of borrowed
    money);

         (f)  easements,  rights-of-way,  restrictions,   servitudes,   permits,
    reservations, exceptions, conditions, covenants and other similar charges or
    encumbrances  not  interfering  with the ordinary conduct of the business of
    the Company or any of its Subsidiaries;

         (g)  any Lien securing Indebtedness,  neither assumed nor guaranteed by
    the Company 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  Company  for  substation,  metering  station, pump station,
    storage,   gathering   line,   transmission   line,   transportation   line,
    distribution line or for right-of-way purposes, and any  Liens  reserved  in
    leases  for rent and for 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 (vii) does not materially impair the use of the Property  covered  by
    such  Lien for the purposes of which such Property is held by the Company or
    any of its Subsidiaries;

         (h)  inchoate Liens arising under ERISA;

         (i)  any Lien on any  Property  securing Indebtedness incurred, assumed
    or guaranteed as permitted by Section 6.05(f);

         (j)  Liens reserved in customary oil, gas  and/or  mineral  leases  for
    bonus  or  rental  payments and for compliance with the terms of such leases
    and Liens reserved in  customary  operating agreements, farm-out and farm-in
    agreements, exploration agreements, development agreements and other similar
    agreements for compliance with the terms of such agreements;

                                      -59-

         (k)  any obligations or duties affecting any of  the  Property  of  the
    Company  or  its  Subsidiaries  to any municipality or public authority with
    respect to any franchise, grant,  license  or permit which do not materially
    impair the use of such Property for the purposes for which it is held;

         (l)  defects, irregularities and deficiencies in title of any rights of
    way or other Property  of  the  Company  or  any  Subsidiary  which  in  the
    aggregate  do  not  materially impair the use of such rights of way or other
    Property for the purposes for  which  such  rights of way and other Property
    are held by the Company or any Subsidiary, and defects,  irregularities  and
    deficiencies  in  title  to any Property of the Company or its Subsidiaries,
    which defects, irregularities or deficiencies  have been cured by possession
    under applicable statutes of limitation;

         (m)  royalties, overriding royalties, revenue  interests,  net  revenue
    interests,  production  payments  (other than production payments granted or
    created by the Company in  connection  with the borrowing of money), advance
    payment obligations (other than obligations in respect  of  advance  payment
    received by the Company in connection with the borrowing of money) and other
    similar  burdens  now existing on Oil and Gas Properties now owned or, as to
    Properties hereafter acquired, at the time  of acquisition by the Company or
    any of its Subsidiaries;

         (n)  Liens arising out of all presently existing  and  future  division
    and  transfer  orders, advance payment agreements, processing contracts, gas
    processing plant agreements, operating agreements, gas balancing or deferred
    production agreements, pooling,  unitization  or communitization agreements,
    pipeline,  gathering  or  transportation  agreements,  platform  agreements,
    drilling  contracts,   injection   or   repressuring   agreements,   cycling
    agreements,   construction   agreements,   salt   water  or  other  disposal
    agreements, leases or rental agreements  (but only as otherwise permitted by
    this  Agreement),  farm-out  and   farm-in   agreements,   exploration   and
    development  agreements,  and  any  and  all  other  contracts or agreements
    covering, arising out of, used or useful in connection with or pertaining to
    the exploration, development,  operation,  production,  sale, use, purchase,
    exchange,  storage,   separation,   dehydration,   treatment,   compression,
    gathering,  transportation,  processing, improvement, marketing, disposal or
    handling of any Property of  the  Company or its Subsidiaries, provided such
    agreements are entered into in the ordinary course of business  and  contain
    terms customary for such agreements in the industry;

         (o)  Liens  securing up to $15,000,000 of the Indebtedness permitted by
    Section 6.05(k) to the extent such  Indebtedness is issued in support of the
    Company's (or its Subsidiaries') Bolivian operations;

         (p)  Liens securing up to  $15,000,000  of  Indebtedness  permitted  by
    Section 6.05(n);

         (q)  Liens  securing  the Indebtedness permitted by Section 6.05(i) and
    Liens of equipment lessors, but only covering the Property under lease; and

         (r)  extensions, renewals or replacements  of  any  Lien referred to in
    Subsections 6.06(a) through (q), provided that the principal amount  of  the
    Indebtedness  or  obligation  secured  thereby is not increased and that any
    such extension, renewal or replacement is limited to the Property originally
    encumbered thereby.

                                      -60-

    Section 6.07   Mergers, Sales, etc.  Merge into or with or consolidate with,
or permit any of its Subsidiaries to merge into or with or consolidate with, any
other Person, or sell,  lease  or  otherwise  dispose  of,  or permit any of its
Subsidiaries to sell, lease or otherwise dispose of (whether in one  transaction
or  in  a  series  of transactions) all or any part of its Property to any other
Person, other than (i) (A) a  merger  of  any Guarantor into the Company or into
another Guarantor other  than  Tesoro  Bolivia,  Tesoro  Environmental,  or  any
Subsidiary thereof, (B) a merger of any Guarantor with any Person other than the
Company or another Guarantor if immediately thereafter and giving effect thereto
the  Company or a Guarantor, other than Tesoro Bolivia, Tesoro Environmental, or
any Subsidiary thereof, shall own 100% of the stock of the surviving corporation
and (C) a merger of the  Company  with  any  other  Person if the Company is the
surviving corporation, provided, however, that in each  such  case,  immediately
thereafter  and  giving  effect  thereto,  no  event  shall have occurred and be
continuing which constitutes a Default, (ii)  a sale, lease or other disposition
of all or any part of its Property by any Guarantor to the  Company  or  another
Guarantor  other  than  Tesoro  Bolivia, Tesoro Environmental, or any Subsidiary
thereof, (iii) sales, leases or  other  dispositions  of  all or any part of its
Property by the Company or any of its Subsidiaries to any other  Person  not  in
excess  of  $2,000,000  in  any  12-month  period  and  not to exceed $5,000,000
cumulatively from the Closing Date and provided further, that the Company or any
such Subsidiary of the Company  receives  fair market consideration for any such
sale, lease or disposition of such Properties, or (iv) a sale,  lease  or  other
disposition  of  Tesoro  R&M's interest in the Tesoro Terminals, the proceeds of
which will not be included in  the  limitation amounts set forth in clause (iii)
above.   Notwithstanding  the  foregoing  limitations,  the  Company   and   its
Subsidiaries  may  (A)  sell inventory, Hydrocarbon production and other similar
assets in the  ordinary  course  of  business,  (B)  sell, transfer or otherwise
dispose of personal property (including, but not limited  to,  pipe,  equipment,
machinery  and  vehicles)  in  the  ordinary  course of business or when, in the
reasonable judgment of the Company, such property is no longer used or useful in
the conduct of its business or the business of its Subsidiaries, (C) farm-out in
the ordinary course of business any Oil  and Gas Properties owned by the Company
or its Subsidiaries which do not constitute a portion of the Mortgaged Property,
(D) sell Properties of the Non-Guarantor Subsidiaries, and (E) sell the Property
of or stock issued by Tesoro Bolivia, Tesoro  Environmental,  or  any  of  their
respective Subsidiaries, provided, that, in connection with any sale of property
or  stock  pursuant  to  this  clause  (E),  any Letter of Credit issued for the
account of, or  to  support  the  assets  or  operations  of the Guarantor whose
Properties or stock is being sold, shall be terminated or backed by a letter  of
credit in form and substance, and issued by an issuer, acceptable to each of the
Administrative Agent and the applicable Issuing Bank in their sole discretion.

    Section  6.08   Restricted  Payments.   Declare  or  pay any dividend on its
capital stock, make any payment  to  purchase,  redeem, retire or acquire any of
its capital stock or any option, warrant, or other right to acquire such capital
stock, return any capital to its stockholders,  make  any  distribution  of  its
assets  to  its  stockholders  as  such,  or  permit  any of its Subsidiaries to
purchase or otherwise  acquire  for  value  any  stock  of  the Company, or pay,
prepay, repurchase or redeem the  Subordinated  Debentures  or  Exchange  Notes,
except that the Company may

         (i)    declare and deliver stock dividends,

         (ii)   declare and pay cash dividends  on  common  stock  or  preferred
    stock  issued  by the Company or repurchase its common stock, in amounts not
    to exceed the Cumulative Amount Available for Restricted Payments; provided,
    however, after  the  occurrence  of  the  Mandate  Event,  any payments made
    pursuant to this clause (ii) shall not, on an annual basis, exceed an amount
    equal to $5,000,000 less the amount used pursuant to clause (vi) to purchase
    outstanding stock of the Company,

                                      -61-

         (iii)  redeem the Subordinated Debentures and/or  Exchange  Notes  with
    the  proceeds  from  (A)  equity  offerings,  (B)  Indebtedness permitted by
    Sections 6.05(b) and (f) and  (C)  cash proceeds received in connection with
    Lenape Resources Corp. v.  Tennessee Gas Pipeline Company, 39 Tex  Sup.  Ct.
    J.  496 (April 18, 1996), (D) the Cumulative Amount Available for Restricted
    Payments, (E) after the occurrence of the Collection Event, cash on hand and
    (F) after the occurrence  of  [both  the  Mandate  Event and] the Collection
    Event, Loans not to exceed $15,000,000 in the aggregate,

         (iv)   purchase stock as permitted by Section 6.09(i),

         (v)    after the occurrence of the Mandate Event and  in  an  aggregate
    amount  not  to exceed $5,000,000, repurchase the common stock issued by the
    Company from (A)  shareholders  owning  100  shares  or  less pursuant to an
    oddlot buyback program and (B) the open market for employee  benefit  plans,
    and

         (vi)   after  the  occurrence  of  the Mandate Event, repurchase common
    stock (other than as permitted in  Section 6.08(v)) issued by the Company in
    an annual amount not to exceed $5,000,000 less the amount of  any  dividends
    paid pursuant to clause (ii);

provided that both before and after giving effect to any such restricted payment
permitted  by  clauses (i) through (vi) above, a Default shall not have occurred
and be continuing and the  Aggregate  Revolving Credit Exposure shall not exceed
the Maximum Available Amount.

    Section 6.09   Investments, Loans, etc.  Make or  permit  any  loans  to  or
investments  in  any Person, or permit any of its Subsidiaries to make or permit
any loans to or investments in any Person, other than:

         (a)  investments, loans or advances, the material details of which have
    been  set  forth  in  the  Financial  Statements  or  are  disclosed  to the
    Administrative Agent in Schedule 4.07 hereto;

         (b)  investments in direct obligations of the United States of  America
    or any agency thereof;

         (c)  investments in certificates of deposit of maturities less than one
    year,  issued  by  commercial  banks in the United States having capital and
    surplus in excess of $500,000,000;  provided, however, the Company may, with
    the  written  approval  of  the  Administrative  Agent,   invest   in   such
    certificates  of  deposit  issued  by  commercial banks in the United States
    having capital and surplus in  excess  of  $200,000,000 and a Thomson's Bank
    Watch rating of B or better;

         (d)  investments in commercial paper of maturities less than  one  year
    rated  A1  or  P1  by  Standard  &  Poors  Corporation  or Moody's Investors
    Services, Inc., respectively, or any equivalent rating from any other rating
    agency satisfactory to the Administrative Agent;

         (e)  routine loans or advances to employees made in the ordinary course
    of business not to exceed (A)  $250,000  at  any one time outstanding to any
    one employee and (B) $1,500,000 in the aggregate;

         (f)  investments  in  securities  purchased   by  the  Company  or  any
    Subsidiary of the Company under repurchase  obligations  pursuant  to  which
    arrangements are made with selling

                                      -62-

    financial  institutions (being (A) a financial institution having unimpaired
    capital and surplus of not less than $500,000,000 and with a rating of A1 or
    P1 by Standard  &  Poors  Corporation  or  Moody's Investors Services, Inc.,
    respectively; or (B) with the written approval of the Administrative  Agent,
    a  financial  institution  having unimpaired capital and surplus of not less
    than $200,000,000 and a Thomson's Bank Watch rating of B or better) for such
    financial institutions to repurchase such securities within 30 days from the
    date of purchase  by  the  Company  or  such  Subsidiary,  and other similar
    short-term investments made in connection with the Company's or any  of  its
    Subsidiary's cash management practices;

         (g)  the  purchase,  redemption  or acquisition of capital stock of the
    Company as permitted by Section 6.08;

         (h)  entering into a joint  venture  or  partnership in connection with
    the sale to such joint venture  or  partnership  of  the  assets  of  Tesoro
    Bolivia or Tesoro Environmental;

         (i)  the  purchase  of stock issued by the Company from participants in
    the incentive stock plans of the  Company made for the purpose of satisfying
    federal withholding tax obligations of such  participants  as  provided  for
    under  the  terms  of  such  incentive stock plans or stock incentive grants
    thereunder;

         (j)  investments  in   eurodollar   obligations   with  maturities  not
    exceeding three (3) months, issued by (and supported by the full  faith  and
    credit  and  representing  direct  obligations  of) any Lender or any office
    located in the United States  of  any  other  bank or trust company which is
    organized under the laws of the United States  or  any  state  thereof,  has
    capital,  surplus and undivided profits aggregating at least $500,000,000.00
    (as of the date of  such  Lender's  or  bank  or trust company's most recent
    financial reports) and has a short term deposit rating of no lower  than  A1
    or  P1,  as  such rating is set forth from time to time, by Standard & Poors
    Corporation or  Moody's  Investors  Service,  Inc.,  respectively; provided,
    however, the Company may, with the written approval  of  the  Administrative
    Agent, invest in such eurodollar obligations issued by (and supported by the
    full  faith  and  credit and representing direct obligations of) any bank or
    trust company with an office  located  in  the United States having capital,
    surplus and undivided  profits  aggregating  at  least  $200,000,000  and  a
    Thomson's Bank Watch rating of B or better;

         (k)  purchases,  in  the aggregate not to exceed $10,000,000, of all or
    substantially all of the stock  of  corporations principally in the business
    of exploration and production of oil and gas as a  means  of  acquiring  any
    such corporation, but in no event in contravention of Section 4.09; and

         (l)  purchases,  in  the aggregate not to exceed $10,000,000, of all or
    substantially all of the stock  of  corporations principally in the business
    of marine services as a means of acquiring any such corporation, but  in  no
    event in contravention of Section 4.09.

         (m)  investments,  loans  or  advances  to  Guarantors  and  to  Tesoro
    Environmental  Resources Company; provided, however, the aggregate amount of
    all investments,  loans  or  advances  after  the  Closing  Date directly or
    indirectly by the Company in Tesoro Environmental  Resources  Company  shall
    not  exceed  $1,500,000;  provided  further,  however,  that the Company may
    settle claims against Non-Guarantor Subsidiaries  in an amount not to exceed
    $3,000,000, in the aggregate.

                                      -63-

    Section 6.10   Lease Payments.  Except for (i) oil and gas lease obligations
permitted under Section 6.05,  (ii)  lease  obligations (excluding Capital Lease
Obligations) existing under leases for oil field equipment and tools  rented  in
the  ordinary  course of business for a duration of less than one year and (iii)
time charter  payments  with  regard  to  barges  or  tankers  used to transport
feedstocks, blendstocks or refined products in the ordinary course of  business;
create,  incur, assume or suffer to exist, nor permit any of its Subsidiaries to
create, incur, assume or suffer to exist, any obligation for the payment of rent
or hire of Property of any  kind whatsoever (real or personal), whether directly
or as a guarantor, if, after giving effect thereto, the aggregate amount of  all
payments  required  to  be  made  by  the  Company  and  its  Subsidiaries  on a
consolidated basis  pursuant  to  such  leases  or  lease  agreements (excluding
Capital Lease Obligations) would exceed $8,000,000 in any calendar year.

    Section 6.11   Sales and Leasebacks.  Enter  into,  or  permit  any  of  its
Subsidiaries  to  enter  into, any arrangement, directly or indirectly, with any
Person whereby the Company or  any  such  Subsidiary  shall sell or transfer any
Property, whether now owned or hereafter acquired, and whereby  the  Company  or
any  such  Subsidiary  shall  then  or  thereafter  rent or lease as lessee such
Property or any part thereof  or  other  Property  which the Company or any such
Subsidiary intends to use for substantially the same purpose or purposes as  the
Property sold or transferred.

    Section 6.12   Nature of Business.  Permit any material change to be made in
the  character of its business or the business of any Guarantor as carried on at
the date hereof, except as may be permitted pursuant to this Agreement.

    Section 6.13   ERISA Compliance.

         (a)  Engage in,  or  permit  any  ERISA  Affiliate  to  engage  in, any
    transaction in connection with  which  the  Company,  a  Subsidiary  of  the
    Company  or any ERISA Affiliate could be subjected to either a civil penalty
    assessed pursuant to Sections 502(c) or 502(i)  of ERISA or a tax imposed by
    Section 4975 of the Code, except where such assessment or  imposition  would
    not have Material Adverse Effect;

         (b)  Terminate, or permit any ERISA Affiliate to terminate, any Plan in
    a  manner,  or  take  any other action with respect to any Plan, which could
    result in any liability of the  Company,  a Subsidiary of the Company or any
    ERISA Affiliate to the PBGC, except where such termination would not have  a
    Material Adverse Effect;

         (c)  Fail  to make, or permit any ERISA Affiliate to fail to make, full
    payment when due of all  amounts  which,  under  the provisions of any Plan,
    agreement relating thereto or applicable law, the Company, a  Subsidiary  of
    the  Company  or  any  ERISA  Affiliate  is required to pay as contributions
    thereto, except where  the  failure  to  make  such  payments would not have
    Material Adverse Effect;

         (d)  Permit to exist, or allow any ERISA Affiliate to permit to  exist,
    any  accumulated  funding  deficiency  within  the meaning of Section 302 of
    ERISA or Section 412 of the Code, whether or not waived, with respect to any
    Plan, except where the  existence  of  such  a  deficiency  would not have a
    Material Adverse Effect;

                                      -64-

         (e)  Contribute to or assume an obligation to contribute to, or  permit
    any  ERISA  Affiliate to contribute to or assume an obligation to contribute
    to, any "multiemployer plan" as  such  term  is  defined in Section 3(37) or
    4001(a)(3) of ERISA;

         (f)  Acquire, or permit any ERISA Affiliate to acquire, an interest  in
    any Person that causes such Person to become an ERISA Affiliate with respect
    to  the  Company or a Subsidiary of the Company or with respect to any ERISA
    Affiliate of the Company  or  a  Subsidiary  of  the  Company if such Person
    sponsors, maintains or contributes to, or at any time in the six-year period
    preceding such acquisition has sponsored, maintained, or contributed to, (1)
    any "multiemployer plan" as  such  term  is  defined  in  Section  3(37)  or
    4001(a)(3)  of  ERISA,  or (2) any other Plan that is subject to Title IV of
    ERISA under which the  actuarial  present  value  of the benefit liabilities
    under such Plan exceeds the current value of the assets (computed on a  plan
    termination  basis  in  accordance  with  Title  IV  of  ERISA) of such Plan
    allocable to such benefit liabilities;

         (g)  Fail to pay, or cause to be  paid, to the PBGC in a timely manner,
    and without incurring any late payment or underpayment  charge  or  penalty,
    all  premiums  required  pursuant to Sections 4006 and 4007 of ERISA, except
    where such failure would not have a Material Adverse Effect; or

         (h)  Amend, or permit any ERISA Affiliate to amend, a Plan resulting in
    an increase in current liability such  that the Company, a Subsidiary of the
    Company or any ERISA Affiliate is required to provide security to such  Plan
    under Section 401(a)(29) of the Code.

    Section  6.14   Sale  or Discount of Receivables.  Discount or sell (with or
without recourse), or permit any of  its  Subsidiaries to discount or sell (with
or without recourse), any of  its  or  its  Subsidiaries'  notes  receivable  or
accounts  receivable;  provided  that  the Company may discount or sell (with or
without recourse) up to $3,000,000 in  the aggregate of its accounts receivables
that are more than 60 days past due.

    Section 6.15   Negative Pledge Agreements.  Create, incur, assume or  suffer
to  exist,  or permit any of its Subsidiaries to create, incur, assume or suffer
to exist, any contract, agreement  or  understanding (other than this Agreement,
the other Financing Documents or as set forth on Schedule 6.15 hereof) which  in
any  way  prohibits or restricts the granting, conveying, creation or imposition
of any Lien  on  any  Property  of  the  Company  or  its Subsidiaries, or which
requires the consent of or notice to other Persons in connection therewith.

    Section 6.16   Transactions with Affiliates.  Enter into any transaction  or
series  of  transactions,  or  permit  any of its Subsidiaries to enter into any
transaction or series of  transactions,  with  Affiliates  of the Company or its
Subsidiaries which involve an outflow  of  money  or  other  Property  from  the
Company  or its Subsidiaries to an Affiliate of the Company or its Subsidiaries,
including  but  not  limited  to  repayment  of  Indebtedness,  management fees,
compensation, salaries, asset purchase payments or any other  type  of  fees  or
payments  similar in nature, other than on terms and conditions substantially as
favorable to the Company  and  its  Subsidiaries  as  would be obtainable by the
Company and its Subsidiaries in a reasonably comparable arm's-length transaction
with a Person other than such an Affiliate of the Company or  its  Subsidiaries.
Notwithstanding  the  foregoing, the restrictions set forth in this Section 6.16
shall not apply  to:   (i)  the  payment  of  reasonable  and  customary fees to
directors of the Company who are not employees  of  the  Company,  (ii)  routine
loans  or  advances  to employees made in the ordinary course of business not to
exceed $250,000 at any one time  outstanding  to  any one employee, or (iii) any
other transaction with any employee,

                                      -65-

officer  or  director  of  the  Company  or  any of its Subsidiaries pursuant to
employee benefit plans and  compensation  arrangements  in amounts customary for
corporations similarly situated to  the  Company  or  any  such  Subsidiary  and
entered  into  the  ordinary  course  of  business  and approved by the Board of
Directors of the Company or any  committee  thereof or the Board of Directors of
such Subsidiary.

    Section 6.17   Unconditional Purchase Obligations.  Enter into or be a party
to, or permit any of its Subsidiaries to enter  into  or  be  a  party  to,  any
contract  for the purchase of materials, supplies or other property or services,
if such contract requires that payment  be  made  by it regardless of whether or
not delivery is ever made of such  materials,  supplies  or  other  property  or
services.

    Section  6.18   Stock.   Authorize  or issue any preferred stock (except for
the issuance of non-redeemable preferred  stock  to  replace  one or more of the
Company's outstanding issues of preferred stock, provided, that the issuance  of
such  preferred  stock  does  not  otherwise  result  in  a  Default  under this
Agreement) or permit any of its Subsidiaries to authorize or issue any preferred
or common stock to be held by  any  Person  other than the Company or any of its
wholly-owned Subsidiaries.

    Section 6.19   Non-Recourse Indebtedness.  The Company shall not permit  any
Subsidiary  to incur any Non-Recourse Indebtedness otherwise permitted hereunder
except upon terms and  conditions  and  pursuant  to  documentation, in form and
substance, reasonably satisfactory to the Administrative Agent and Documentation
Agent.

                                  ARTICLE VII


                               EVENTS OF DEFAULT

    Upon the occurrence and during the  continuance  of  any  of  the  following
specified events (each an "Event of Default"):

    Section  7.01   Payments.   (a)  The  Company  shall  fail  to  pay when due
(including, but not limited to,  by  mandatory  prepayment) any principal of any
Loan or any Note, or any Reimbursement Obligation; or (b) the Company shall fail
to pay when due any interest on any Loan or Note, any fee or  any  other  amount
payable  hereunder,  and  such  failure  to  pay shall continue unremedied for a
period of three Business Days;

    Section 7.02   Covenants Without Notice.  The  Company shall fail to observe
or perform any covenant or  agreement  contained  in  Sections  5.05,  5.09  and
Article VI (excluding Subsections 6.05(c) and (h), and Section 6.16 hereof);

    Section  7.03   Other  Covenants.   The  Company  shall  fail  to observe or
perform any  covenant  or  agreement  contained  in  (a)  Section  5.11, Section
5.15(a), (b), (c), (d), (g), (h), (i), or (k), Subsections  6.05(c)  or  (h)  or
Section  6.16  and,  if  capable  of  being  remedied, such failure shall remain
unremedied for  10  days  after  the  earlier  of  (i)  the  Company's obtaining
knowledge thereof, or (ii) written notice thereof shall have been given  to  the
Company  by  any  Lender,  the Issuing Bank or the Administrative Agent; and (b)
this Agreement, other than those referred  to  in Sections 7.01, 7.02, or clause
(a) of this Section 7.03, and, if capable of being remedied, such failure  shall
remain  unremedied  for 30 days after the earlier of (i) the Company's obtaining
knowledge thereof, or (ii) written notice  thereof  shall have been given to the
Company by any Lender, the Issuing Bank or the Administrative Agent;

                                      -66-

    Section 7.04   Other Financing Document Obligations.  Default is made in the
due observance or performance by the Company or any Subsidiary of the Company of
any of the covenants or agreements contained in  any  Financing  Document  other
than this Agreement, and such default continues unremedied beyond the expiration
of  any  applicable  grace  period  which  may  be  expressly allowed under such
Financing Document;

    Section 7.05   Representations.  Any  representation,  warranty or statement
made or deemed to be made by the Company or any Subsidiary of the Company or any
of such Company's, or Subsidiary's officers herein or  in  any  other  Financing
Document, or in any certificate, request or other document furnished pursuant to
or  under  this  Agreement  or  any  other  Financing  Document, shall have been
incorrect in any material respect as of the date when made or deemed to be made;

    Section 7.06   Non-Payments of Other  Indebtedness.   The  Company or any of
its Subsidiaries shall fail to make any payment or payments of principal  of  or
interest  on  any  Indebtedness  of  the Company or such Subsidiary in excess of
$3,000,000 in the aggregate (other than (i) the Lender Indebtedness and (ii) any
trade account subject to a bona fide  dispute and the trade creditor has neither
filed a lawsuit nor caused a Lien to be placed upon any Property of the  Company
or  such  Subsidiary)  when due (whether at stated maturity, by acceleration, on
demand or otherwise) after giving effect to any applicable grace period;

    Section 7.07   Defaults Under Other Agreements.   The  Company or any of its
Subsidiaries shall  fail  to  observe  or  perform  any  covenant  or  agreement
contained  in  any  agreement(s)  or  instrument(s)  relating to Indebtedness of
$3,000,000 or more in the aggregate  within  any applicable grace period, or any
other event shall occur, if the effect of such failure  or  other  event  is  to
accelerate,  or to permit the holder of such Indebtedness or any other Person to
accelerate, the  maturity  of  $3,000,000  or  more  in  the  aggregate  of such
Indebtedness; or $3,000,000 or more in the aggregate of  any  such  Indebtedness
shall  be,  or if as a result of such failure or other event may be, required to
be prepaid (other than by a regularly scheduled required prepayment) in whole or
in part prior to its stated maturity;

    Section 7.08   Bankruptcy.  The  Company  or  any  of its Subsidiaries shall
commence a voluntary case concerning itself under Title 11 of the United  States
Code  entitled  "Bankruptcy"  as  now  or  hereafter in effect, or any successor
thereto (the "Bankruptcy Code"); or an involuntary case is commenced against the
Company or any of its Subsidiaries  and  the petition is not controverted within
10 days, or is not stayed or dismissed within 60 days, after commencement of the
case; or a custodian (as defined in the Bankruptcy Code) is  appointed  for,  or
takes  charge  of, all or any substantial part of the property of the Company or
any of its Subsidiaries; or the Company or any of its Subsidiaries commences any
other proceeding  under  any  reorganization,  arrangement,  adjustment of debt,
relief of debtors, dissolution, insolvency or liquidation or similar law of  any
jurisdiction  whether now or hereafter in effect relating to the Company or such
Subsidiary or there is commenced against  the Company or any of its Subsidiaries
any such proceeding which remains unstayed or undismissed for  a  period  of  60
days;  or  the  Company  or  any of its Subsidiaries is adjudicated insolvent or
bankrupt; or any order  of  relief  or  other  order  approving any such case or
proceeding is entered; or the Company or any of  its  Subsidiaries  suffers  any
appointment  of  any custodian or the like for it or any substantial part of its
Property to continue undischarged or unstayed  for  a  period of 60 days; or the
Company or any of its Subsidiaries makes a general assignment for the benefit of
creditors; or the Company or any of its Subsidiaries shall fail to pay, or shall
state that it is unable to pay, or shall be unable to pay, its  debts  generally
as  they  become due; or the Company or any of its Subsidiaries shall by any act
or failure to act indicate its consent to, approval of or acquiescence in any of
the foregoing; or any corporate action  is  taken  by  the Company or any of its
Subsidiaries for the purpose of effecting any of the foregoing;

                                      -67-

    Section 7.09   ERISA.  A Plan shall fail to  maintain  the  minimum  funding
standard  required  by  Section 412 of the Code for any plan year or a waiver of
such standard is sought or  granted  under  Section  412(d), or a Plan is, shall
have been or  is  likely  to  be,  terminated  or  the  subject  of  termination
proceedings under ERISA, or the Company or an ERISA Affiliate has incurred or is
likely  to incur a liability to or on account of a Plan under Section 515, 4062,
4063, 4064, 4201 or 4204 of ERISA, and there shall result from any such event or
events either a liability or  a  material  risk  of incurring a liability to the
PBGC or a Plan, which will have a Material Adverse Effect;

    Section 7.10   Money Judgment.  A judgment or order for the payment of money
in excess of $3,000,000 or that would otherwise have a Material  Adverse  Effect
shall  be  rendered  against  the  Company  or  any  of it Subsidiaries and such
judgment or order shall  continue  unsatisfied  in  accordance with the terms of
such judgment or order (in the case of a money judgment) and  in  effect  for  a
period  of  30  days  during  which execution shall not be effectively stayed or
deferred (whether by action of a court, by agreement or otherwise);

    Section 7.11   Discontinuance of  Business.   The  Company  or any Guarantor
shall cease to carry on its business as currently conducted or  as  contemplated
to be conducted, except for the discontinuance of Tesoro R&M;

    Section  7.12   Security  Instruments.   The  material terms of the Security
Instruments after delivery thereof shall  for  any  reason, except to the extent
permitted by the terms thereof, cease to be in full force and effect and  valid,
binding  and  enforceable  (except as enforceability may be limited as stated in
Section 4.03) in accordance with  their  terms,  or  cease to create a valid and
perfected Lien of the priority contemplated thereby on  any  of  the  collateral
purported  to  be covered thereby, or the Company or any of its Subsidiaries (or
any other Person who may have granted  or purported to grant such Lien) shall so
state in writing;

    Section 7.13   Change of Control.  The occurrence of a Change of Control;

    Section 7.14   Mandatory Prepayments.  The Company shall fail  to  make  any
mandatory prepayment required by Section 2.10; or

    Section  7.15   Material  Adverse  Event.   The  occurrence  of any event or
condition that the Majority Lenders believe in  good faith to have resulted in a
Material Adverse Effect;

then, and in any such event, and at any time thereafter, if any Event of Default
shall then be continuing, the Administrative Agent, upon the  written  or  telex
request  of  the Majority Lenders, shall, by written notice to the Company, take
any or all of the  following  actions,  without  prejudice  to the rights of the
Administrative Agent, any Lender or the holder  of  any  Note,  to  enforce  its
claims  against  the  Company:  (i) declare the Revolving Credit Commitment, and
other lending obligations, if  any,  terminated,  whereupon the Revolving Credit
Commitment and other lending obligations, if any, of each Lender shall terminate
immediately; or (ii) declare the entire principal  amount  of  and  all  accrued
interest  on  all Lender Indebtedness then outstanding to be, whereupon the same
shall become, forthwith due  and  payable  without presentment, demand, protest,
notice of protest or dishonor, notice  of  acceleration,  notice  of  intent  to
accelerate or other notice of any kind, all of which are hereby expressly waived
by  the  Company,  and thereupon take such action as it may deem desirable under
and pursuant to the Financing Documents;  provided, that, if an Event of Default
specified in Section 7.08 shall occur, the result which  would  occur  upon  the
giving of written notice

                                      -68-

by the Administrative Agent to the Company, as specified in clauses (i) and (ii)
above, shall occur automatically without the giving of any such notice.


                                  ARTICLE VIII

                            THE ADMINISTRATIVE AGENT

    Section 8.01   Appointment of Administrative Agent.   Each  Lender  and  the
Issuing  Bank hereby designate Banque Paribas, as Administrative Agent to act as
herein  specified.   Each  Lender  and   the  Issuing  Bank  hereby  irrevocably
authorizes the Administrative Agent to take such action on its behalf under  the
provisions  of  this Agreement, the Notes, and the other Financing Documents and
to exercise such powers and to  perform  such duties hereunder and thereunder as
are specifically delegated to or required of the  Administrative  Agent  by  the
terms  hereof  and  thereof  and  such other powers as are reasonably incidental
thereto.  The Administrative Agent may perform any of its duties hereunder by or
through its Administrative Agents or employees.

    Section 8.02   Nature of  Duties  of  Administrative Agent and Documentation
Agent.  The Administrative Agent and  the  Documentation  Agent  shall  have  no
duties or responsibilities except those expressly set forth with respect to each
of  the  Administrative  Agent  or  the  Documentation  Agent in this Agreement.
Neither the Administrative  Agent,  the  Documentation  Agent  nor  any of their
respective officers, directors, employees  or  Administrative  Agents  shall  be
liable  for any action taken or omitted by it as such hereunder or in connection
herewith, unless caused by its or  their gross negligence or willful misconduct.
The duties of the Administrative Agent and  the  Documentation  Agent  shall  be
mechanical  and  administrative  in  nature;  the  Administrative  Agent and the
Documentation Agent shall  not  have  by  reason  of  this Agreement a fiduciary
relationship in respect of any Lender; and nothing in this Agreement,  expressed
or  implied,  is  intended  to  or  shall  be so construed as to impose upon the
Administrative Agent or the  Documentation  Agent  any obligations in respect of
this Agreement except as expressly set forth herein.

    Section  8.03   Lack  of  Reliance  on  the  Administrative  Agent  and  the
Documentation Agent.

         (a)  Independent Investigation.   Independently  and  without  reliance
    upon  the  Administrative  Agent or the Documentation Agent, each Lender, to
    the extent it deems appropriate, has made and shall continue to make (i) its
    own independent investigation of the  financial condition and affairs of the
    Company in connection with the  taking  or  not  taking  of  any  action  in
    connection  herewith,  and (ii) its own appraisal of the creditworthiness of
    the Company,  and,  except  as  expressly  provided  in  this Agreement, the
    Administrative Agent and the Documentation  Agent  shall  have  no  duty  or
    responsibility,  either  initially  or on a continuing basis, to provide any
    Lender with any credit  or  other  information with respect thereto, whether
    coming into its possession  before  the  consummation  of  the  transactions
    contemplated herein or at any time or times thereafter.

         (b)  Agent   Not   Responsible.    The  Administrative  Agent  and  the
    Documentation Agent shall not be  responsible  to  any Lender or the Issuing
    Bank  for  any  recitals,  statements,   information,   representations   or
    warranties herein or in any document, certificate or other writing delivered
    in  connection  herewith  or  for the execution, effectiveness, genuineness,
    validity, enforceability, collectibility,  priority  or  sufficiency of this
    Agreement, the Notes, the Letters of Credit or the other Financing Documents
    or the financial condition of the Company or be required to make any inquiry

                                      -69-

    concerning either the  performance  or  observance  of  any  of  the  terms,
    provisions or conditions of this Agreement, the Notes or the other Financing
    Documents,  or  the  financial condition of the Company, or the existence or
    possible existence of any Default or Event of Default.

    Section  8.04   Certain  Rights  of   the   Administrative  Agent.   If  the
Administrative Agent shall request instructions from the Majority  Lenders  with
respect  to  any act or action (including the failure to act) in connection with
this Agreement, the Notes and  the other Financing Documents, the Administrative
Agent shall be entitled to refrain from such act or taking  such  action  unless
and  until  the  Administrative  Agent shall have received instructions from the
Majority Lenders; and the Administrative Agent  shall not incur liability to any
Person by reason of so refraining.  Without limiting the  foregoing,  no  Lender
shall  have any right of action whatsoever against the Administrative Agent as a
result of the Administrative Agent  acting  or refraining from acting under this
Agreement, the Notes and the other Financing Documents in  accordance  with  the
instructions of the Majority Lenders.

    Section  8.05   Reliance  by Administrative Agent.  The Administrative Agent
shall be entitled to rely,  and  shall  be  fully protected in relying, upon any
note, writing, resolution, notice, statement, certificate,  telex,  teletype  or
telecopier   message,   cablegram,   radiogram,   order  or  other  documentary,
teletransmission or telephone message believed  by  it to be genuine and correct
and to have been signed, sent or made by the proper Person.  The  Administrative
Agent  may  consult  with  legal  counsel  (including  counsel for the Company),
independent public accountants and other experts selected by it and shall not be
liable for any action taken  or  omitted  to  be  taken  by  it in good faith in
accordance with the advice of such counsel, accountants or experts.

    Section 8.06   Indemnification of Administrative Agent and the Documentation
Agent.  To the extent the Administrative Agent or the Documentation Agent is not
reimbursed and indemnified by  the  Company,  each  Lender  will  reimburse  and
indemnify the Administrative Agent or the Documentation Agent, as applicable, in
proportion  to  its  Percentage  Share, for and against any and all liabilities,
obligations,  losses,  damages,  penalties,  actions,  judgments,  suits, costs,
expenses (including counsel fees and disbursements) or disbursements of any kind
or nature whatsoever which may be imposed on, incurred by  or  asserted  against
the  Administrative  Agent  or  the Documentation Agent in performing its duties
hereunder, in any way relating  to  or  arising  out of this Agreement; provided
that no Lender shall be liable to the Administrative Agent or the  Documentation
Agent  for  any  portion  of  such  liabilities,  obligations,  losses, damages,
penalties, actions, judgments, suits, costs, expenses or disbursements resulting
from,  as  to  the  Administrative   Agent,  the  Administrative  Agent's  gross
negligence or  willful  misconduct  or,  as  to  the  Documentation  Agent,  the
Documentation Agent's gross negligence or willful misconduct.

    Section  8.07   The  Administrative  Agent  and Documentation Agent in their
Individual Capacity.  With respect  to  their  obligations under this Agreement,
the Loans made by it and the Note issued to it,  the  Administrative  Agent  and
Documentation Agent shall have the same rights and powers hereunder as any other
Lender  or  holder  of  a  Note  and may exercise the same as though it were not
performing the  duties,  if  any,  specified  herein;  and  the terms "Lenders,"
"Majority Lenders," "holders of Notes" or any similar terms  shall,  unless  the
context  clearly  otherwise  indicates,  include  the  Administrative  Agent and
Documentation Agent in their individual  capacity.  The Administrative Agent and
Documentation Agent may accept deposits  from,  lend  money  to,  and  generally
engage  in any kind of banking, trust, financial advisory or other business

                                      -70-

with the Company or any affiliate  of  the  Company as if it were not performing
the  duties,  if  any,  specified  herein,  and  may  accept  fees   and   other
consideration  from  the  Company for services in connection with this Agreement
and otherwise without having to account for the same to the Lenders.

    Section  8.08   Lender  as   Owner.    The   Administrative  Agent  and  the
Documentation Agent may deem and treat each Lender as the owner of such Lender's
Note for all purposes hereof unless and until a written notice of the assignment
or transfer thereof shall have been filed with the  Administrative  Agent.   Any
request,  authority  or  consent  of  any  Person who at the time of making such
request or giving such authority  or  consent  is  the  owner of a Note shall be
conclusive and binding on any subsequent owner, transferee or assignee  of  such
Note or any promissory note or notes issued in exchange therefor.

    Section 8.09   Successor Administrative Agent.

         (a)  Agent  Resignation.   The  Administrative  Agent may resign at any
    time by giving written notice thereof  to  the Lenders, the Issuing Bank and
    the Company and may be removed at any time with  or  without  cause  by  the
    Majority  Lenders.   Upon  any  such  resignation  or  removal, the Majority
    Lenders shall have the  right,  upon  five  days'  notice to the Company, to
    appoint a successor Administrative Agent.  If  no  successor  Administrative
    Agent  shall  have been so appointed by the Majority Lenders, and shall have
    accepted such appointment, within 30  days after the retiring Administrative
    Agent's giving of notice of resignation or the Majority Lenders' removal  of
    the  retiring  Administrative  Agent,  then,  upon  five days' notice to the
    Company, the retiring Administrative  Agent  may,  on behalf of the Lenders,
    appoint a successor Administrative  Agent,  which  shall  be  a  bank  which
    maintains  an  office  in  the United States, or a commercial bank organized
    under the laws of the United States  of  America or of any State thereof, or
    any Affiliate of such bank, having a combined  capital  and  surplus  of  at
    least $250,000,000.

         (b)  Rights,  Powers,  etc.   Upon the acceptance of any appointment as
    Administrative Agent hereunder  by  a  successor  Administrative Agent, such
    successor Administrative Agent shall thereupon succeed to and become  vested
    with  all  the  rights,  powers,  privileges  and  duties  of  the  retiring
    Administrative  Agent,  and  the  retiring  Administrative  Agent  shall  be
    discharged  from its duties and obligations under this Agreement.  After any
    retiring  Administrative  Agent's   resignation   or  removal  hereunder  as
    Administrative Agent, the provisions of this Article VIII shall inure to its
    benefit as to any actions taken or omitted to be taken by it  while  it  was
    Administrative Agent under this Agreement.


                                   ARTICLE IX

                                 MISCELLANEOUS

    Section  9.01   Notices.   All notices, requests and other communications to
any  party  hereunder  shall  be  in  writing  (including,  telecopy  or similar
teletransmission or writing) and shall be given to such party at its address  or
telecopy number set forth on the signature pages hereof or such other address or
telecopy   number  as  such  party  may  hereafter  specify  by  notice  to  the
Administrative Agent and the Company; provided that a copy of all notices to the
Administrative Agent (a) which are Advance  Notices shall also be sent to Banque
Paribas, 1200 Smith Street, Suite 3100, Houston,  Texas  77002,  Telecopier  No.
(713)  659-5305,  Attention:   Leah Evans-Hughes, and (b) which are requests for
the issuance of a Letter  of  Credit  by

                                      -71-

Banque Paribas shall also be sent to Banque Paribas, 1200  Smith  Street,  Suite
3100,  Houston,  Texas  77002, Telecopier No. (713) 659-3832, Attention:  Cheryl
Johnson.  Each such notice,  request  or  other communication shall be effective
(i) if given by mail, 72 hours after such  communication  is  deposited  in  the
mails with first class postage prepaid, addressed as aforesaid, or (ii) if given
by  any  other  means  (including,  but  not  limited  to, by air courier), when
delivered at the address specified in this Section; provided that notices to the
Administrative Agent shall not be effective until received.

    Section 9.02   Amendments, etc.   Any  provision  of  this  Agreement or any
other Financing Document may be amended, modified or waived with  the  Company's
and the Majority Lenders' prior written consent; provided that (a) no amendment,
modification  or waiver which extends the due date or maturity of the Loans, the
Revolving Credit  Maturity  Date,  releases  all  or  substantially  all  of the
Collateral, reduces the interest rate  applicable  to  the  Loans  or  the  fees
payable to the Lenders generally, releases the Company or any material Guarantor
from  its  respective  obligation  to  pay  principal  or interest on the Loans,
affects this  Section  9.02  or  Section  9.04  or  modifies  the  definition of
"Majority Lenders", shall be effective without consent of all  Lenders;  (b)  no
amendment,  modification  or waiver which increases the Commitment of any Lender
shall be  effective  without  the  consent  of  such  Lender;  (c) no amendment,
modification or waiver which modifies the rights, duties or obligations  of  the
Administrative   Agent   shall   be   effective   without  the  consent  of  the
Administrative Agent; (d) no  amendment,  modification  or waiver which modifies
the rights, duties or obligations of the Documentation Agent shall be  effective
without   the  consent  of  the  Documentation  Agent;  and  (e)  no  amendment,
modification or waiver  which  modifies  the  rights,  duties  or obligations of
either Issuing Bank shall be effective without the  consent  of  the  applicable
Issuing  Bank.  Notwithstanding anything in this Section to the contrary, unless
instructed to the contrary by the  Majority Lenders, the applicable Issuing Bank
shall extend each Letter of Credit prior to any expiration date thereof pursuant
to the terms of such Letter of Credit or its related Application if a failure to
so extend such Letter of  Credit  would  result  in  entitling  the  beneficiary
thereof to draw thereon.

    Section  9.03   No  Waiver; Remedies Cumulative.  No failure or delay on the
part of the Company or the Administrative  Agent  or any Lender or any holder of
any Note in exercising any right or remedy under this  Agreement  or  any  other
Financing  Document  and  no  course  of  dealing  between  the  Company and the
Administrative Agent or any Lender or any  holder of any Note shall operate as a
waiver thereof, nor shall any single or partial exercise of any right or  remedy
under  the  Notes,  this  Agreement or any other Financing Document preclude any
other or further exercise thereof or  the  exercise of any other right or remedy
under the Notes, this Agreement or any other Financing Document.  The rights and
remedies herein expressly provided are  cumulative  and  not  exclusive  of  any
rights  or  remedies  which  the Company, the Administrative Agent or any Lender
would otherwise have.  No notice to or  demand on the Company not required under
the Notes, this Agreement or any other Financing  Document  in  any  case  shall
entitle the Company to any other or further notice or demand in similar or other
circumstances  or  constitute a waiver of the rights of the Administrative Agent
or the Lenders to  any  other  or  further  action  in any circumstances without
notice or demand.

    Section 9.04   Payment of Expenses, Indemnities, etc.  The Company agrees to
(and shall be liable for):

         (a)  Expenses.  Whether or not the transactions hereby contemplated are
    consummated, pay all reasonable out-of-pocket  costs  and  expenses  of  the
    Administrative  Agent  and  each  Issuing  Bank  in the administration (both
    before and after the execution hereof  and including advice of counsel as to
    the rights and duties of the  Administrative  Agent  and  the  Lenders  with
    respect  thereto)

                                      -72-

    of,  and  in  connection  with  the  preparation, execution and delivery of,
    recording or filing of, preservation  of  rights under, enforcement of, and,
    after a  Default,  refinancing,  renegotiation  or  restructuring  of,  this
    Agreement,  the  Notes, and the other Financing Documents and any amendment,
    waiver or consent  relating  thereto  (including,  but  not  limited to, the
    reasonable fees and disbursements of counsel for  the  Administrative  Agent
    and  in  the  case  of  enforcement  for  any  of  the Lenders) and promptly
    reimburse the Administrative Agent  for  all  amounts expended, advanced, or
    incurred  by  the  Administrative  Agent  or  the  Lenders  to  satisfy  any
    obligation of the Company or the Guarantors  under  this  Agreement  or  any
    other Financing Document;

         (b)  Indemnification.    Indemnify   the   Administrative   Agent,  the
    Documentation Agent,  the  Issuing  Banks  and  each  Lender,  each of their
    respective  officers,  directors,  employees,  representatives,  agents  and
    Affiliates from, hold each of  them  harmless  against,  and  promptly  upon
    demand  pay  or  reimburse  each  of  them  for, any and all actions, suits,
    proceedings (including any investigations, litigation or inquiries), claims,
    costs, losses,  liabilities,  damages  or  expenses  of  any  kind or nature
    whatsoever which may be incurred by or asserted against or  involve  any  of
    them  (whether or not any of them is designated a party thereto) as a result
    of, arising out of or in any  way  related to (i) any actual or proposed use
    by the Company or any Subsidiary of the Company of the proceeds  of  any  of
    the  Loans;  or  (ii) any other aspect of this Agreement, the Notes, and the
    Financing Documents, including but  not  limited  to the reasonable fees and
    disbursements of counsel (including allocated costs of internal counsel) and
    all other expenses incurred in connection with investigating,  defending  or
    preparing  to  defend  any  such  action,  suit,  proceeding  (including any
    investigations,  litigation  or  inquiries)  or  claim,  and  including  all
    actions, suits,  proceedings  (including  any  investigations, litigation or
    inquiries), claims, costs, losses, liabilities, damages or expenses  arising
    by  reason  of  ordinary  negligence of any of the Administrative Agent, the
    Documentation Agent,  the  Issuing  Banks  and  each  Lender,  each of their
    respective  officers,  directors,  employees,  representatives,  agents  and
    Affiliates; provided, however, the provisions of this Section 9.04(b)  shall
    not  apply  to  any  action,  suits,  proceedings,  claims,  costs,  losses,
    liabilities,  damages,  or  expenses  to the extent, but only to the extent,
    caused by the gross negligence  or  willful  misconduct of the party seeking
    indemnification;

         (c)  Environmental Indemnification.  Indemnify and hold  harmless  from
    time  to time the Administrative Agent, the Documentation Agent, the Issuing
    Banks and the Lenders, each Person claiming by, through, under or on account
    of any of the  foregoing  and  the  respective directors, officers, counsel,
    employees, agents, successors and assigns of each of the foregoing from  and
    against  any  and  all losses, claims, cost recovery actions, administrative
    orders or proceedings, damages and liabilities  (which relate to or arise as
    a result of the Loans, the Letters of Credit or any Financing  Document)  to
    which  any  such Person may become subject and including any and all losses,
    claims, cost recovery actions, administrative orders or proceedings, damages
    and liabilities (which relate to  or  arise  as  a  result of the Loans, the
    Letters of Credit or any  Financing  Document)  arising  by  reason  of  the
    ordinary negligence of the Administrative Agent, the Documentation Agent and
    the Lenders, each Person claiming by, through, under or on account of any of
    the

                                      -73-

    foregoing  and  the  respective  directors,  officers,  counsel,  employees,
    agents,  successors  and  assigns  of  each  of  the foregoing (1) under any
    Environmental Law applicable to the  Company  or  any of its Subsidiaries or
    any of  their  respective  Properties,  including  without  limitation,  the
    treatment  or  disposal  of  Hazardous Substances on any of their respective
    Properties, (2) as a result of  the  breach or non-compliance by the Company
    or any of its Subsidiaries with any  Environmental  Law  applicable  to  the
    Company or any of its Subsidiaries, (3) due to past ownership by the Company
    or  any  of  its  Subsidiaries of any of their respective Properties or past
    activity on any of their  respective  Properties  or past activity on any of
    their respective Properties which, though lawful and  fully  permissible  at
    the time, could result in present liability, (4) the presence, use, release,
    storage,  treatment  or disposal of Hazardous Substances on or at any of the
    Properties owned or operated by the  Company  or any of its Subsidiaries, or
    (5) any other environmental, health or safety condition in  connection  with
    this  Agreement,  the  Notes  or  any  other  Financing  Document; provided,
    however, no  indemnity  shall  be  afforded  under  this  Section 9.04(c) in
    respect of any Property for any occurrence arising solely and directly  from
    the  acts  or omissions of the Administrative Agent or any Lender during the
    period after  which  such  Person,  its  successors  or  assigns  shall have
    obtained possession of such Property (whether by foreclosure or deed in lieu
    of foreclosure, as mortgagee-in-possession or otherwise); and

         (d)  Environmental Waiver.  Without limiting the foregoing  provisions,
    and  hereby does waive, release and covenant not to bring against any of the
    Persons identified in this  Section  9.04  any  demand, claim, cost recovery
    action or lawsuit they may now or hereafter have or accrue (which relate  to
    or  arise  as  a result of the Loans, the Letters of Credit or any Financing
    Document) arising from (1)  any  Environmental  Law now or hereafter enacted
    (including those applicable to the  Company  or  any  of  its  Subsidiaries)
    unless  the  acts  or  omissions  of  any  such  person  or their respective
    successors and assigns are the  sole  and  direct cause of the circumstances
    giving rise to such  demand,  cost  recovery  action  or  lawsuit,  (2)  the
    presence,   use,  release,  storage,  treatment  or  disposal  of  Hazardous
    Substances on or at any of  the  Properties owned or operated by the Company
    or any of its Subsidiaries, or (3)  the  breach  or  non-compliance  by  the
    Company  with  any Environmental Law or environmental covenant applicable to
    the Company or any of its Subsidiaries, unless the acts or omissions of such
    Person, its successors and  assigns  are  the  sole  and direct cause of the
    circumstances giving rise to such demand, claim,  cost  recovery  action  or
    lawsuit.

If  and to the extent that the obligations of the Company under this Section are
unenforceable for any reason,  the  Company  hereby  agrees  to make the maximum
contribution to the payment  and  satisfaction  of  such  obligations  which  is
permissible  under applicable law.  The Company's obligations under this Section
shall survive any termination of this Agreement and the payment of the Notes.

    Section 9.05   Right of Setoff.  In addition to and not in limitation of all
rights of  offset  that  any  Lender  or  either  Issuing  Bank  may  have under
applicable law, each Lender or other holder of  a  Note,  or  any  other  Lender
Indebtedness  shall, upon the occurrence of any Event of Default and at any time
during the continuance thereof and whether  or not such Lender, the Issuing Bank
or such holder has made any demand

                                      -74-

or the Company's obligations are matured,  have  the  right at any time and from
time to time, without notice to the Company (any  such  notice  being  expressly
waived  by  the  Company)  to set-off and apply any and all deposits (general or
special, time or  demand,  provisional  or  final)  at  any  time held and other
indebtedness at any time owing by any Lender or the Issuing Bank to or  for  the
credit  or  the  account  of  the  Company  against  any  and  all of the Lender
Indebtedness then outstanding.

    Section 9.06   Benefit of Agreement.

         (a)  Benefit of  Parties.   The  Notes,  this  Agreement  and the other
    Financing Documents shall be binding upon and inure to the benefit of and be
    enforceable by the respective successors and assigns of the parties  hereto,
    provided  that  the  Company  may not assign or transfer any of its interest
    hereunder or thereunder without  the  prior  written consent of the Lenders.
    In the event that any Lender sells participations  in  the  Notes  or  other
    Lender  Indebtedness  of  the Company incurred or to be incurred pursuant to
    this Agreement, to other  banks  or  entities,  each  of such other banks or
    entities shall have the rights of set-off against such  Lender  Indebtedness
    and  similar  rights  or Liens to the same extent as may be available to the
    Administrative Agent or the Lenders.

         (b)  Branch  Offices,  Affiliates.   Any  Lender  may  make,  carry  or
    transfer Loans at, to or for  the  account  of, any of its branch offices or
    the office of an Affiliate of such Lender.

    Section 9.07   Assignments and Participations.

         (a)  No Company Assignments.  The Company may not assign its rights and
    obligations hereunder or under the Notes.

         (b)  Assignment by Lenders.  Each Lender may, upon the written  consent
    of  the  Administrative Agent and, so long as no Default exists, the Company
    (which consent shall not be  unreasonably  withheld),  assign to one or more
    Eligible Transferees all or a portion of its rights  and  obligations  under
    this   Agreement   pursuant   to  an  Assignment  and  Acceptance  Agreement
    substantially in the  form  of  Exhibit  D  (an "Assignment and Acceptance")
    provided, however, that (i) any such assignment shall be  in  the  aggregate
    amount of at least $5,000,000 or such lesser amount to which the Company has
    consented  (or if the aggregate amount of any Lender's Loans and Commitments
    is less than $5,000,000, then the  entire  amount of such Lender's Loans and
    Commitments), and (ii) the assignee shall pay to the Administrative Agent  a
    processing  and  recordation  fee of $2,500; and, further provided, however,
    any Lender may assign its  rights  and obligations hereunder to an Affiliate
    pursuant to the foregoing terms and conditions, except that (i)  no  consent
    from  the Administrative Agent and the Company shall be required and (ii) no
    processing and recordation fee shall  be required.  Any such assignment will
    become effective upon the recording by  the  Administrative  Agent  of  such
    assignment  in  the  Register  of  the  resultant  effects  thereof  on  the
    Commitment   of   the  assignor  and  assignee,  and  the  principal  amount
    outstanding  of  the  Loans   owed   to   the  assignor  and  assignee,  the
    Administrative Agent hereby agreeing to effect  such  recordation  no  later
    than  five  Business  Days after its receipt of an Assignment and Acceptance
    executed by all parties  thereto.   Promptly  after receipt of an Assignment
    and Acceptance executed by all parties  thereto,  the  Administrative  Agent
    shall send to the Company a copy of such executed Assignment and Acceptance.
    Upon  receipt of such executed Assignment and Acceptance, the Company, will,
    at its own expense, execute  and  deliver  new  Notes to the assignor and/or
    assignee, as appropriate, in accordance with their respective  interests  as
    they appear on the Register.  Upon

                                      -75-

    the  effectiveness  of  any  assignment  pursuant  to  this  subsection, the
    assignee shall be deemed automatically to have become a party hereto, if not
    already a party  hereto,  and  shall  become  a  "Lender,"  if not already a
    "Lender," for all  purposes  of  this  Agreement  and  the  other  Financing
    Documents.   The  assignor shall be relieved of its obligations hereunder to
    the extent of such assignment (and  if  the assigning Lender no longer holds
    any rights or obligations under this Agreement, such assigning Lender  shall
    cease to be a "Lender" hereunder).  The Administrative Agent will prepare on
    the  last  Business  Day of each month during which an assignment has become
    effective pursuant to this subsection  a  new  schedule giving effect to all
    such assignments effected during such month, and will promptly  provide  the
    same to the Company, the Issuing Banks and each of the Lenders.

         (c)  Participations.    Each  Lender  may  transfer,  grant  or  assign
    participations in all  or  any  part  of  such  Lender's interests hereunder
    pursuant to this subsection to any Person, provided that:  (i)  such  Lender
    shall  remain  a  "Lender"  for  all  purposes  of  this  Agreement  and the
    transferee of such participation shall  not constitute a "Lender" hereunder;
    and (ii) no participant under any such participation shall  have  rights  to
    approve  any  amendment  to  or  waiver  of this Agreement, the Notes or any
    Financing Document except to the  extent  such amendment or waiver would (x)
    extend the Revolving Credit Maturity Date of any of the Commitments or Loans
    in which such participant is participating, (y)  reduce  the  interest  rate
    (other  than  as  a  result of waiving the applicability of any post-default
    increases in interest rates) or fees applicable to any of the Commitments or
    Loans in which such participant is participating, or postpone the payment of
    any thereof, or (z) release  all  or  substantially all of the collateral or
    guaranties  (except  as  expressly  provided  in  the  Financing  Documents)
    supporting any of the Commitments or Loans  in  which  such  participant  is
    participating.  In the case of any such participation, the participant shall
    not  have  any rights under this Agreement or any of the Financing Documents
    (the participant's rights against  the  granting  Lender  in respect of such
    participation to be those set  forth  in  the  agreement  with  such  Lender
    creating  such  participation),  and  all  amounts  payable  by  the Company
    hereunder  shall  be  determined  as  if  such  Lender  had  not  sold  such
    participation, provided that such  participant  shall be entitled to receive
    additional amounts under Sections 2.16 and 2.18 on the same basis as  if  it
    were  a Lender.  In addition, each agreement creating any participation must
    include an agreement by the  participant  to  be  bound by the provisions of
    Section 9.15.  Notwithstanding anything  in  this  Section  9.07(c)  to  the
    contrary,  the  purchase by each Lender of a participation in the Letters of
    Credit on the Effective Date  and  any  subsequent  assignment of all or any
    part of any such Lender's Percentage Share in any Letter of Credit  and  its
    related  Letter  of Credit Liabilities pursuant to Section 9.07(b) shall not
    be considered a participation pursuant to this Section 9.07(c).

         (d)  Registration Statements; Blue Sky Laws.  Notwithstanding any other
    provisions of this Section 9.07, no  transfer or assignment of the interests
    or obligations of any  Lender  hereunder  or  any  grant  of  participations
    therein  shall  be  permitted  if  such  transfer, assignment or grant would
    require the Company or any  Guarantor  to file a registration statement with
    the Securities and Exchange Commission or to qualify  the  Loans  under  the
    "Blue Sky" laws of any state.

         (e)  Certain  Representations.   Each  Lender  initially  party to this
    Agreement hereby represents, and each  Person that becomes a Lender pursuant
    to an assignment permitted by subsection (b) above will, upon  its  becoming
    party  to  this  Agreement, represent that it is an Eligible Transferee, and
    that it will make or acquire Loans  only for its own account in the ordinary
    course of its business; provided, however, that  subject  to  the  preceding
    Subsections (b) through (d), the

                                      -76-

    disposition of any promissory notes or other evidences of  or  interests  in
    Lender  Indebtedness  held  by  such Lender shall at all times be within its
    exclusive control.

         (f)  Assignees Treated as Lenders.   The  entries in the Register shall
    be conclusive in  the  absence  of  manifest  error  and  the  Company,  the
    Administrative Agent, the Issuing Bank and the Lenders may treat each person
    whose  name  is  recorded  in the Register pursuant to the terms hereof as a
    Lender hereunder for all purposes of  this Agreement and the other Financing
    Documents.  The Register shall be available for inspection  by  the  Company
    and any Lender, at any reasonable time and from time to time upon reasonable
    prior notice.

         (d)  The Lenders may furnish any information concerning the Company and
    the  Subsidiaries  in  the  possession  of  the Lenders from time to time to
    assignees   and   participants    (including   prospective   assignees   and
    participants); provided  that,  such  Persons  agree  to  be  bound  by  the
    provisions of Section 9.15 hereof.

         (e)  Notwithstanding anything in this Section 9.07 to the contrary, any
    Lender  may  assign  and  pledge its Note to any Federal Reserve Bank or the
    United States Treasury as  collateral  security  pursuant to Regulation A of
    the Board of Governors of the  Federal  Reserve  System  and  any  operating
    circular  issued  by such Federal Reserve System and/or such Federal Reserve
    Bank.  No such assignment and/or  pledge  shall release the assigning and/or
    pledging Lender from its obligations hereunder.


    Section 9.08   Governing Law; Submission to Jurisdiction; Etc.

         (a)  Governing Law. This Agreement and the rights  and  obligations  of
    the  parties  hereunder and under the Notes shall be construed in accordance
    with and be governed by the  laws  of  the  State of Texas and to the extent
    controlling, laws of the United States of America.   Tex.  Rev.  Civ.  Stat.
    Ann.  Art.  5069,  Ch.  15  (which  regulates  certain revolving credit loan
    accounts and revolving tri-party accounts) shall not apply to this Agreement
    or the other Financing Documents.

         (b)  Submission to Jurisdiction.  Any  legal  action or proceeding with
    respect to this Agreement, the Notes or the other Financing Documents may be
    brought in the courts of the State of Texas  or  of  the  United  States  of
    America  for  the Southern District of Texas, and, by execution and delivery
    of this Agreement, the Company hereby  accepts  for itself and in respect of
    its  property,  generally  and  unconditionally,  the  jurisdiction  of  the
    aforesaid courts.  The company  hereby  irrevocably  waives  any  objection,
    including, but not limited to, any objection to the laying of venue or based
    on  the  grounds of forum non conveniens, which it may now or hereafter have
    to the  bringing  of  any  such  action  or  proceeding  in  such respective
    jurisdictions.

         (c)  Waiver of Jury Trial, etc.  The Company and each Lender hereby (i)
    irrevocably and unconditionally waive, to the fullest  extent  permitted  by
    law,  trial  by  jury  in  any  legal  action or proceeding relating to this
    Agreement or any Financing Document  and  for any counterclaim therein; (ii)
    certify that no party

                                      -77-

    hereto nor any representative or agent of counsel for any party  hereto  has
    represented,  expressly  or otherwise, or implied that such party would not,
    in the event of litigation, seek to enforce the foregoing waivers, and (iii)
    acknowledge that it  has  been  induced  to  enter  into this Agreement, the
    Financing Documents and the transactions contemplated hereby and thereby by,
    among other things, the mutual waivers and certifications contained in  this
    section 9.08.

         (d)  Designation   of   Administrative   Agent.    The  Company  hereby
    irrevocably designates its General Counsel, currently designated as James C.
    Reed, Jr., as the designee, appointee  and  agent of the Company to receive,
    for and on behalf of the Company, service  of  process  in  such  respective
    jurisdictions  in  any  legal  action  or  proceeding  with  respect to this
    Agreement, the Notes, or  the  other  Financing Documents.  It is understood
    that a copy of such process served on such agent will be promptly  forwarded
    by  mail  to  the  Company  at  its address set forth opposite its signature
    below, but the failure of the Company  to receive such copy shall not affect
    in any way the service of such process.   The  Company  further  irrevocably
    consents  to  the  service of process of any of the aforementioned courts in
    any such action or proceeding by the mailing of copies thereof by registered
    or certified mail, postage prepaid, to the Company at its said address, such
    service to become effective 30 days after such mailing.

         (e)  Service of Process.  Nothing herein  shall affect the right of the
    Administrative Agent or any Lender or any holder of a Note to serve  process
    in  any  other  manner  permitted by law or to commence legal proceedings or
    otherwise proceed against the Company in any other jurisdiction.

    Section 9.09   Independent Nature of  Lenders'  Rights.  The amounts payable
at any time hereunder to each Lender shall be a separate and  independent  debt,
and  each Lender shall be entitled to protect and enforce its rights arising out
of this Agreement, and it  shall  not  be  necessary  for any other Lender to be
joined as an additional party in any proceeding for such purpose.

    Section 9.10   Invalidity.  In the  event  that  any  one  or  more  of  the
provisions  contained  in  the  Notes,  this Agreement or in any other Financing
Document shall, for any reason, be held invalid, illegal or unenforceable in any
respect, such invalidity, illegality  or  unenforceability  shall not affect any
other provision of the Notes, this Agreement or any other Financing Document.

    Section 9.11   Survival of Agreements.  All representations  and  warranties
of  the  Company  or its Subsidiaries or any other Person herein or in the other
Financing Documents, and all covenants and agreements herein not fully performed
before the Effective Date, shall survive such date or dates.

    Section 9.12   Renewal, Extension or  Rearrangement.  All provisions of this
Agreement and of any other Financing Documents relating to the  Notes  or  other
Lender  Indebtedness  shall  apply  with  equal force and effect to each and all
promissory notes hereafter  executed  which  in  whole  or  in  part represent a
renewal, extension for any period, increase or rearrangement of any part of  the
Lender  Indebtedness originally represented by the Notes, or of any part of such
other Lender Indebtedness.

    Section 9.13   Interest.  It  is  the  intention  of  the  parties hereto to
conform strictly to usury laws  applicable  to  the  Administrative  Agent,  the
Documentation  Agent,  the  Issuing  Banks  and  the  Lenders (collectively, the
"Financing Parties") and  the  Transactions.   Accordingly,  if the Transactions
would be usurious as to any Financing Party under laws applicable to  it,  then,
notwithstanding anything to the contrary

                                      -78-

in the Notes, this Agreement or in any other  Financing  Document  or  agreement
entered  into  in connection with the Transactions or as security for the Notes,
it  is  agreed  as  follows:   (i)  the  aggregate  of  all  consideration which
constitutes interest under  law  applicable  to  any  Financing  Party  that  is
contracted  for,  taken,  reserved,  charged or received by such Financing Party
under the Notes, this Agreement or  under  any of such other Financing Documents
or agreements or otherwise in connection with the Transactions  shall  under  no
circumstances  exceed the maximum amount allowed by such applicable law, (ii) in
the event that the maturity of  the  Notes  is accelerated for any reason, or in
the event of any required or permitted prepayment, then such consideration  that
constitutes  interest  under  law  applicable  to  any Financing Party may never
include more than the maximum amount  allowed  by such applicable law, and (iii)
excess interest, if  any,  provided  for  in  this  Agreement  or  otherwise  in
connection  with  the  Transactions  shall  be  canceled  automatically  by such
Financing Party and, if theretofore  paid,  shall  be credited by such Financing
Party on the principal amount of such Financing Party's Indebtedness (or, to the
extent that the principal amount of such Financing  Party's  Indebtedness  shall
have  been or would thereby be paid in full, refunded by such Financing Party to
the Company).  The  right  to  accelerate  the  maturity  of  the Notes does not
include the right to accelerate any interest which has not otherwise accrued  on
the  date  of  such  acceleration,  and  the  Financing Parties do not intend to
collect any unearned interest in  the  event  of acceleration.  All sums paid or
agreed to be paid to the Financing Parties for the use, forbearance or detention
of sums included in the Lender Indebtedness shall, to the  extent  permitted  by
law  applicable  to  such Financing Party, be amortized, prorated, allocated and
spread throughout the full term of the  Notes  until payment in full so that the
rate or amount of interest on account of the Lender Indebtedness does not exceed
the applicable usury ceiling, if any.   As  used  in  this  Section,  the  terms
"applicable  law" or "laws applicable to any Financing Party" shall mean the law
of any jurisdiction  whose  laws  may  be mandatorily applicable notwithstanding
other provisions of this Agreement, or law  of  the  United  States  of  America
applicable  to  any Financing Party and the Transactions which would permit such
Financing Party to contract  for,  charge,  take,  reserve  or receive a greater
amount of interest than under such  jurisdiction's  law.   To  the  extent  that
Article  5069-1.04  of  the  Texas  Revised  Civil  Statutes  is relevant to any
Financing Party for the  purpose  of  determining  the Highest Lawful Rate, such
Financing Party hereby elects to determine the  applicable  rate  ceiling  under
such Article by the indicated (weekly) rate ceiling from time to time in effect,
subject  to  such  Financing Party's right subsequently to change such method in
accordance with applicable law.

    Section 9.14   Taxes, etc.  Any  taxes  (excluding  income taxes) payable or
ruled payable by federal or state  authority  in  respect  of  the  Notes,  this
Agreement  or  the  other  Financing  Documents  shall  be  paid by the Company,
together with interest and penalties, if any.

    Section 9.15   Confidential Information.  The  Administrative Agent and each
Lender agree that all documentation and other information made available by  the
Company  to  the  Administrative  Agent  or  such Lender under the terms of this
Agreement shall (except to the extent such documentation or other information is
publicly available or hereafter becomes  publicly available other than by action
of the Administrative  Agent  or  such  Lender,  or  was  theretofore  known  or
hereinafter becomes known to the Administrative Agent or such Lender independent
of any disclosure thereto by the Company) be held in the strictest confidence by
the  Administrative  Agent  or such Lender and used solely in the administration
and enforcement of the Loans from  time  to time outstanding from such Lender to
the Company and in the prosecution of defense of legal  proceedings  arising  in
connection  herewith;  provided that (i) the Administrative Agent or such Lender
may disclose documentation and information to the Administrative Agent and/or to
any other Lender which is a  party  to  this Agreement or any Affiliates thereof
and (ii) the Administrative Agent or such Lender may disclose such documentation
or other information to any other bank or other  Person  to  which  such  Lender
sells or proposes to make an assignment or sell a participation

                                      -79-

in its Loans hereunder if such  other  bank or Person, prior to such disclosure,
agrees in writing to be bound by the  terms  of  the  confidentiality  statement
customarily  employed  by  the  Administrative  Agent  in  connection  with such
potential transfers.  Notwithstanding  the  foregoing,  nothing contained herein
shall be construed to prevent the Administrative Agent  or  a  Lender  from  (a)
making  disclosure of any information (i) if required to do so by applicable law
or regulation or accepted banking  practice,  (ii) to any governmental agency or
regulatory body having or claiming to have authority to regulate or oversee  any
aspect  of  such  Lender's business or that of such Lender's corporate parent or
affiliates  in  connection  with  the  exercise  of  such  authority  or claimed
authority,  (iii)  pursuant  to  any  subpoena  or  if  otherwise  compelled  in
connection with any litigation or administrative proceeding, (iv) to correct any
false or misleading information which may become public concerning such Person's
relationship to the Company, or (v) to the extent the  Administrative  Agent  or
such  Lender or its counsel deems necessary or appropriate to effect or preserve
its security for any Lender  Indebtedness  or  to enforce any remedy provided in
the Financing Documents, the Notes or this Agreement or otherwise  available  by
law;  or  (b)  making,  on a confidential basis, such disclosures as such Lender
reasonably deems necessary or  appropriate  to  its legal counsel or accountants
(including outside auditors).  If the Administrative Agent  or  such  Lender  is
compelled  to  disclose such confidential information in a proceeding requesting
such disclosure, the Administrative Agent  or  such  Lender shall seek to obtain
assurance that such confidential treatment will be  accorded  such  information;
provided,  however,  that  the Lender shall have no liability for the failure to
obtain such treatment.

    Section 9.16   Entire Agreement.  The  Notes,  this  Agreement and the other
Financing Documents embody the entire agreement and  understanding  between  the
Administrative  Agent,  the Documentation Agent, the Issuing Bank or the Lenders
and the other respective  parties  hereto  and  thereto  and supersede all prior
agreements and understandings between  such  parties  relating  to  the  subject
matter  hereof  and  thereof  and  may not be contradicted by evidence of prior,
contemporaneous or subsequent agreements of the parties.  There are no unwritten
oral agreements between the parties.

    Section 9.17   Attachments.  The exhibits, schedules and annexes attached to
this Agreement are incorporated herein  and  shall  be considered a part of this
Agreement for the purposes stated herein,  except  that  in  the  event  of  any
conflict  between  any  of the provisions of such exhibits and the provisions of
this Agreement, the provisions of this Agreement shall prevail.

    Section 9.18   Counterparts.  This Agreement  may  be executed in any number
of counterparts and by the different parties hereto  on  separate  counterparts,
each  of  which  when  so executed and delivered shall be an original but all of
which shall together constitute one and the same instrument.

    Section 9.19   Survival  of  Indemnities.   The  Company's obligations under
Sections 2.16, 2.18, 2.21 and 9.04 shall survive the  payment  in  full  of  the
Loans and the Letter of Credit Liabilities.

    Section  9.20   Headings  Descriptive.  The headings of the several sections
and subsections of this Agreement, and  the  Table of Contents, are inserted for
convenience only and shall not in any way affect the meaning or construction  of
any provision of this Agreement.

    Section  9.21   Satisfaction  Requirement.   If  any agreement, certificate,
instrument or other writing, or any action taken or to be taken, is by the terms
of this Agreement required to be satisfactory to any party, the determination of
such satisfaction shall be made by such party in its sole and exclusive judgment
exercised reasonably and in good faith.

                                      -80-

    Section 9.22   Effectiveness.  This Agreement  shall  not be effective until
executed by all signatories hereto and delivered to the Administrative Agent  in
the State of Texas and accepted by the Administrative Agent in such state.

    Section  9.23   Conflict  with  E&P  Mortgage.   In  the event of a conflict
between the terms of the E&P Mortgage and the terms of this Agreement, the terms
of this Agreement shall control.

    Section  9.24   Exculpation  Provisions.    Each   of   the  parties  hereto
specifically agrees that it has a duty to read  this  Agreement  and  the  other
Financing  Documents  and agrees that it is charged with notice and knowledge of
the terms of this Agreement and  the  other  Financing Documents; that it has in
fact read this Agreement and is fully informed and has full notice and knowledge
of the terms, conditions and  effects  of  this  Agreement;  that  it  has  been
represented by legal counsel of its choice throughout the negotiations preceding
its  execution  of  this  Agreement  and  the other Financing Documents; and has
received the advice of its  attorneys  in  entering  into this Agreement and the
other Financing Documents; and that it recognizes that certain of the  terms  of
this  Agreement  and  the other Financing Documents result in one party assuming
the liability inherent in  some  aspects  of  the  transaction and relieving the
other party of its responsibility for such liability.  Each party hereto  agrees
and  covenants  that  it  will not contest the validity or enforceability of any
exculpatory provision of this Agreement and the other Financing Documents on the
basis that the party had no  notice  or  knowledge of such provision or that the
provision is not "conspicuous."

                        [SIGNATURES BEGIN ON NEXT PAGE]

                                      -81-

    IN WITNESS WHEREOF, the parties hereto have caused  this  instrument  to  be
duly executed as of the date first above written.


COMPANY:                     TESORO PETROLEUM CORPORATION


                             By:  /s/ G. A. Wright
                                 Name: G. A. Wright
Address:                         Title:     Vice President, Corporate
                                         Communications and Treasurer
8700 Tesoro Drive
San Antonio, Texas  78217
Telecopier No. (210) 283-2003



ADMINISTRATIVE AGENT,
DOCUMENTATION AGENT,
ISSUING BANKS
AND THE LENDERS:                  BANQUE PARIBAS
                             Individually, as an Issuing Bank and as
                             Administrative Agent



                                  By:  /s/ Brian Malone
Address:                             Name: Brian Malone
                                     Title:     Vice President
1200 Smith Street, Suite 3100
Houston, Texas  77002
Attention:  Mr. Brian Malone      By: /s/ Barton D. Schouest
Telecopier No. (713) 659-6915        Name: Barton D. Schouest
                                     Title:     Group Vice President

                                      S-1

                             THE BANK OF NOVA SCOTIA
                             Individually and as Documentation Agent


                             By:  /s/ A.S. Norsworthy
Address:                         Name:  F.C.H. Ashby
                                 Title: Senior Manager
                                        Loan Operations
600 Peachtree Street N.E.
Suite 2700
Atlanta, Georgia  30308                 A.S. Norsworthy
Attention:  Mr. Claude Ashby         Sr. Team Leader-Loan Operations
Telecopier No. (404) 888-8998


With Copy To:

1100 Louisiana Street, Suite 3000
Houston, Texas  77002
Attention:  Mr. Michael W. Nepveux
Telecopier No. (713) 752-2425



Address:                     BANK OF SCOTLAND

565 5th Avenue
New York, New York  10017
Attention:  Ms. Catherine Oniffrey          By:   /s/ Catherine Oniffrey
Telecopier No. (212) 557-9460                  Name:
                                               Title:
With Copy To:

1200 Smith Street
1750 Two Allen Center
Houston, Texas  77002
Attention:  Ms. Janna Blanter
Telecopier No. (713) 651-9714

                                      S-2


                             CHRISTIANIA BANK OG KREDITKASSE


                                   By: /s/ Peter M. Dodge
Address:                              Name:   Peter M. Dodge
                                      Title:  Vice President
11 West 42nd Street, 7th Floor
New York, New York  10036
Attention:  Mr. Steve Phillips     By: /s/ Carl-Petter Svendsen
Telecopier No. (212) 827-4888         Name:   Carl-Petter Svendsen
                                      Title:  First Vice President


                             THE FIRST NATIONAL BANK OF CHICAGO,
                             Individually and as an Issuing Bank


                                   By: /s/ George R. Schanz
Address:                              Name:   George R. Schanz
                                      Title:  Vice President
One First National Plaza
Chicago, Illinois 60670
Attention:  Mr. George R. Schanz
Telecopier No. (312) 732-3055


                             FIRST UNION NATIONAL BANK OF NORTH
                             CAROLINA


                                   By: /s/ Michael J. Kolosowsky
Address:                              Name:   Michael J. Kolosowsky
                                      Title:  Vice President
1001 Fannin Street, Suite 2255
Houston, Texas  77002
Attention:  Mr. Paul N. Riddle
Telecopier No. (713) 650-6354

                                      S-3


                             NATIONAL BANK OF CANADA


                                   By:  /s/ Larry L. Sears
Address:                              Name:  Larry L. Sears
                                      Title: Group Vice President
125 West 55th Street
New York, New York 10019-5366
Attention:  Mr. Wayne Rosen        By: /s/ Doug Clark
Telecopier No. (212) 632-8736         Name:  Doug Clark
                                      Title: Vice President

With Copy To:

2121 San Jacinto, Suite 1850
Dallas, Texas 75201
Attention:  Mr. Doug Clark
Telecopier No. (214) 871-2015
                                      S-4

                             THE FROST NATIONAL BANK


                                   By: /s/ James B. Crosby
Address:                              Name:  James B. Crosby
                                      Title: Senior Vice President
100 W. Houston Street
P. O. Box 1600
San Antonio, Texas  78296
Attention:  Ms. Jenny Crabtree
Telecopier No. (210) 220-4626


                             DEN NORSKE BANK ASA


                                   By: /s/ Haakon Sandborg
Address:                              Name:  Haakon Sandborg
                                      Title: Senior Vice President
Three Allen Center
333 Clay Street, Suite 4890
Houston, Texas 77002               By: /s/ Byron L. Cooley
Attention:  Mr. Byron Cooley           Name:  Byron L. Cooley
Telecopier No. (713) 757-1167          Title: First Vice President

                                      S-5



                                    ANNEX I

                                  Commitments


                                                 Revolving
                                                 Credit
          Banks                                  Commitment
          -----                                  ----------
                                                    ($'s)

          Banque Paribas                          24,000,000
          The Bank of Nova Scotia                 24,000,000
          Bank of Scotland                        20,000,000
          Christiania Bank OG Kreditkasse         20,000,000
          The First National Bank of Chicago      20,000,000
          National Bank of Canada                 12,000,000
          First Union National Bank of
            North Carolina                        10,000,000
          The Frost National Bank                 10,000,000
          Den norske Bank ASA                     10,000,000
                                                 -----------
                              Total              150,000,000

                                   Annex I-1

                                   EXHIBIT A

                  FORM OF REVOLVING CREDIT NOTE


$__________                                          June 7, 1996


    TESORO PETROLEUM CORPORATION, a Delaware corporation  (the  "Company"),  for
value received, promises and agrees to pay to the order of (the "Lender") at the
Payment   Office   of   BANQUE   PARIBAS   (the   "Administrative   Agent"),  at
_________________________,         the          principal         sum         of
___________________________________  DOLLARS  ($___________________),  or   such
lesser  amount  as  shall  equal  the  aggregate  unpaid principal amount of the
Revolving Credit Loans made by Lender  hereunder to the Company under the Credit
Agreement, as hereafter defined, 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 as provided  in  the Credit Agreement for such Revolving
Credit Loans made by the Lender to the Company under the  Credit  Agreement,  at
such  office,  in like money and funds, for the period commencing on the date of
each such Revolving Credit Loan until  such  Revolving Credit 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 payments required to be made against
this note pursuant to the  Credit  Agreement, this note, including all principal
and accrued interest then unpaid, shall be due and payable  on  April  ________,
1999,  its  final  maturity.   All  payments  shall  be applied first to accrued
interest and the balance to principal, except as otherwise expressly provided in
the Credit Agreement.  Prepayments on this  note  shall be applied in the manner
set forth in the Credit Agreement.

    This note is one of the Revolving Credit Notes referred  to  in  the  Credit
Agreement  dated  as  of the 7th day of June, 1996, by and among the Company and
Banque Paribas, individually, as Issuing  Bank  and as Administrative Agent, The
Bank of Nova Scotia, individually  and  as  Documentation  Agent  and  financial
institutions  parties  thereto  (including  the  Lender) (such Credit Agreement,
together  with  all  amendments  or   supplements  thereto,  being  the  "Credit
Agreement").  This note evidences the Revolving Credit Loans made by the  Lender
thereunder  and  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 Lender is hereby authorized by the Company to endorse on Schedule A  (or
a continuation thereof) attached to this note, the Type of each Revolving Credit
Loan,  the  amount  and  date of each payment or prepayment of principal of each
such Revolving Credit Loan received by  the  Lender and the Interest Periods and
interest rates applicable to each  Revolving  Credit  Loan,  provided  that  any
failure  by  the  Lender  to  make  any  such  endorsement  shall not affect the
obligations of the Company  under  the  Credit  Agreement  or under this note in
respect of such Revolving Credit Loans.

    Except only for any notices which are specifically required  by  the  Credit
Agreement  or  the  other  Financing  Documents,  the  Company  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

                                      A-1

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 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 Revolving
Credit Loans upon the terms and conditions specified therein.  Reference is made
to the Credit Agreement for all other pertinent purposes.

    This note is issued  pursuant  to  and  is  entitled  to the benefits of the
Credit Agreement and is secured by the Security Instruments.

    THIS NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED BY  THE  LAW
OF  THE  STATE  OF  TEXAS  AND THE UNITED STATES OF AMERICA FROM TIME TO TIME IN
EFFECT.


                             TESORO PETROLEUM CORPORATION



                             By:______________________________
                                Name:
                                Title:

                                      A-2

                                   EXHIBIT B

                           FORM OF BORROWING REQUEST

                           __________________, 199__

    TESORO PETROLEUM CORPORATION, a Delaware corporation (the "Company"), hereby
requests a Borrowing on the date and in the amount as follows:



    $___________________ under the Revolving Credit Notes

    Requested funding date:  ________________, 199__

    Type of Borrowing:  ______ Base Rate Loans
                        ______ Eurodollar Loans

    If Eurodollar Loans, length of Interest Period:
                   ______ one month
                   ______ two months
                   ______ three months
                   ______ six months


pursuant to the Credit Agreement dated as  of  June  7, 1996 (as the same may be
amended or supplemented, the  "Credit  Agreement")  among  the  Company,  Banque
Paribas, individually, as Issuing Bank, and as Administrative Agent, The Bank of
Nova  Scotia,  individually,  and  as  Documentation  Agent  and  the  financial
institutions  now  or  hereafter parties thereto.  Capitalized terms used herein
and not defined herein shall  have  the  meaning  given  such term in the Credit
Agreement.  The undersigned certifies that he is the __________________  of  the
Company, and that as such he is authorized to execute this certificate on behalf
of  the  Company.  The undersigned further certifies, represents and warrants on
behalf of the Company that (i) the  Company is entitled to receive the requested
Revolving Credit Loan under the terms and conditions of the Credit Agreement and
(ii) after giving effect to any requested Revolving Credit Loan,  the  aggregate
principal  amount  of  outstanding  Revolving  Credit  Loans will not exceed the
Maximum Revolving Credit Loan Available Amount.


                             TESORO PETROLEUM CORPORATION


                             By:___________________________________
                                 Name:
                                 Title:

                                      B-1

                                   EXHIBIT C


         SUBSIDIARIES                                      GUARANTORS
         ------------                                      ----------

         Tesoro Petroleum Companies, Inc.                       X
         Digicomp, Inc.                                         X
         Tesoro Technology Partners Company                     X
         Tesoro Alaska Petroleum Company                        X
         Interior Fuels Company                                 X
         Tesoro Alaska Pipeline Company                         X
         Tesoro Northstore Company                              X
         Tesoro Refining, Marketing & Supply Company            X
         Tesoro Exploration and Production Company              X
         Tesoro E&P Company, L.P.                               X
         Tesoro Gas Resources Company, Inc.                     X
         Tesoro Natural Gas Company                             X
         Tesoro Bolivia Petroleum Company                       X
         Kenai Pipe Line Company                                X
         Tesoro Vostok Company                                  X
         Coastwide Marine Services, Inc.                        X
         Tesoro Coastwide Services Company                      X
         Tesoro Environmental Resources Company
         Tesoro Environmental Products Company
         Tesoro Indonesia Petroleum Company
         Tesoro Tarakan Petroleum Company
         Tesoro Equipment Company
         Tesoro Crude Oil Company
         Tesoro Gasoline Marketing Company
         Tesoro Pump & Valve Company
         Tesoro Petroleum (Singapore) Pte. Ltd.

                                      C-1

                                   EXHIBIT D

                                    FORM OF

                           ASSIGNMENT AND ACCEPTANCE

                            Dated: __________, 199__

    Reference is made to the Credit Agreement dated as of April ______, 1996 (as
restated, amended, modified, supplemented and  in  effect from time to time, the
"Credit Agreement"), among TESORO PETROLEUM CORPORATION, a Delaware corporation,
BANQUE PARIBAS, individually, as Issuing Bank and as Administrative  Agent,  THE
BANK  OF NOVA SCOTIA, individually and as Documentation Agent, and the financial
institutions parties thereto (the "Lenders").  Capitalized terms used herein and
not otherwise defined shall  have  the  meanings  assigned  to such terms in the
Credit Agreement.  This Assignment and  Acceptance,  between  the  Assignor  (as
defined  and  set  forth  on  Schedule  I hereto and made a part hereof) and the
Assignee (as defined and set forth on  Schedule I hereto and made a part hereof)
is dated as of the Effective Date (as set forth on Schedule I hereto and made  a
part hereof).

    1.   The  Assignor  hereby  irrevocably  sells  and  assigns to the Assignee
without recourse to the Assignor,  and the Assignee hereby irrevocably purchases
and assumes from the Assignor without  recourse  to  the  Assignor,  as  of  the
Effective  Date,  an  undivided interest (the "Assigned Interest") in and to all
the Assignor's rights and obligations  under the Credit Agreement respecting the
credit facilities contained in the Credit Agreement as set forth on  Schedule  I
(herein  referred  to  as  the "Assigned Loans"), in a principal amount for each
Assigned Loan as set forth on Schedule I.

    2.   The Assignor (i)  represents  and  warrants  that  it owns the Assigned
Interest free and clear from any lien or adverse  claim;  (ii)  other  than  the
representation   and   warranty   set  forth  in  clause  (i)  above,  makes  no
representation or warranty and  assumes  no  responsibility  with respect to any
statements, warranties or representations made in  or  in  connection  with  the
Credit  Agreement  or  any  other instrument, document or agreement delivered in
connection therewith,  or  the  execution,  legality,  validity, enforceability,
genuineness, sufficiency  or  value  of  the  Credit  Agreement,  or  any  other
instrument  or  document  furnished  pursuant thereto, other than that it is the
legal and beneficial owner of  the  interest  being assigned by it hereunder and
that such interest is free and clear  of  any  adverse  claim;  (iii)  makes  no
representation  or  warranty  and  assumes no responsibility with respect to the
financial condition of the  Company  or  its  Subsidiaries or the performance or
observance by  the  Company  or  its  Subsidiaries  of  any  of  its  respective
obligations  under  the  Credit  Agreement,  or any other instrument or document
furnished pursuant thereto; and (iv)  attaches  the  Notes held by it evidencing
the Assigned Loans and requests that  the  Administrative  Agent  exchange  such
Note(s)  for  a  new  Note or Notes payable to the Assignor (if the Assignor has
retained any interest  in  the  Assigned  Loans)  and  new  Notes payable to the
Assignee in the respective amounts  which  reflect  the  assignment  being  made
hereby  (and  after  giving  effect  to  any other assignments which have become
effective on the Effective Date).

    3.   The Assignee (i) represents and  warrants that it is legally authorized
to enter into this  Assignment  and  Acceptance  and  that  it  is  an  Eligible
Transferee  under  of the Credit Agreement; (ii) confirms that it has received a
copy of the Credit Agreement,  together  with copies of the financial statements
referred to in Section 4.06, or if later, the most recent  financial  statements
delivered  pursuant  to  Section  5.15  thereof,  and  such  other documents and
information as it has deemed appropriate  to make its own credit analysis; (iii)
agrees that it will, independently and without reliance upon the  Administrative
Agent,  the  Assignor  or  any  other  Lender  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 the Credit Agreement;

                                      D-1
(iv)  appoints  and  authorizes  the Administrative Agent to take such action as
Administrative Agent on its behalf and  to exercise such powers under the Credit
Agreement as are delegated to the Administrative Agent  by  the  terms  thereof,
together  with such powers as are reasonably incidental thereto; (v) agrees that
it will be bound by the provisions  of  the Credit Agreement and will perform in
accordance with its terms all the obligations which by the terms of  the  Credit
Agreement  are  required  to be performed by it as a Lender and hereby makes the
Lender representations set forth in Section 2.21(f) of the Credit Agreement; and
(vi) if the Assignee is organized  under  the laws of a jurisdiction outside the
United States, attaches the forms prescribed by the Internal Revenue Service  of
the  United States and required pursuant to Section 2.21 of the Credit Agreement
certifying as to the Assignee's  exemption  from United States withholding taxes
with respect to all payments to  be  made  to  the  Assignee  under  the  Credit
Agreement  or  such  other  documents as are necessary to indicate that all such
payments are subject to such tax at a rate reduced by an applicable tax treaty.

    4.   Following the execution of this  Assignment  and Acceptance, it will be
delivered to the Administrative Agent and the Company for acceptance by each  of
them  and  recording  by the Administrative Agent pursuant to Section 9.07(b) of
the Credit Agreement, effective as  of  the Effective Date (which Effective Date
shall, unless otherwise agreed to by the Administrative Agent, be at least  five
Business Days after the execution of this Assignment and Acceptance).

    5.   Upon acceptance and recording by the Administrative Agent, all payments
under  the  Credit  Agreement  in  respect  of  the Assigned Interest (including
without limitation, all payments  of  principal,  interest and fees with respect
thereto) for the period up to, but not including, the Effective Date,  shall  be
made to the Assignor, and for the period from and after the Effective Date shall
be  made  to  the Assignee.  Assignor and Assignee hereby agree that if Assignor
receives any of the payments referred  to in the preceding sentence which should
have been made to Assignee, or if Assignee receives any of the payments referred
to in the previous sentence which  should  have  been  made  to  Assignor,  such
payments  shall  promptly  be  paid  by  Assignor to Assignee, or by Assignee to
Assignor, as the case may be, in full.

    6.   From and after the Effective Date, (i) the Assignee shall be a party to
the Credit  Agreement  and,  to  the  extent  provided  in  this  Assignment and
Acceptance and Section 9.07  of  the  Credit  Agreement,  have  the  rights  and
obligations  of  a Lender thereunder, and (ii) the Assignor shall, to the extent
provided in this  Assignment  and  Acceptance  and  Section  9.07  of the Credit
Agreement, relinquish its rights and be released from its obligations under  the
Credit Agreement.

    7.   THIS  ASSIGNMENT  AND ACCEPTANCE SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF TEXAS.

    IN WITNESS WHEREOF,  the  parties  hereto  have  caused  this Assignment and
Acceptance to be executed  by  their  respective  duly  authorized  officers  on
Schedule I hereto.



                             as Assignor


                             By: _____________________________________________
                                Name:
                                     Title:

                                      D-2

                             as Assignee

                             By: _____________________________________________
                                     Name:
                                     Title:


                             ACCEPTED:

                             TESORO PETROLEUM CORPORATION



                             By: _____________________________________________
                                     Name:
                                     Title:


                             BANQUE PARIBAS, as Administrative Agent



                             By: _____________________________________________
                                     Name:
                                     Title:



                             By: _____________________________________________
                                     Name:
                                     Title:

                                      D-3

                    SCHEDULE I TO ASSIGNMENT AND ACCEPTANCE
                        RESPECTING THE CREDIT AGREEMENT,
                         DATED AS OF JUNE 7, 1996 AMONG
                        TESORO PETROLEUM CORPORATION AND
                                BANQUE PARIBAS,
          INDIVIDUALLY, AS Administrative Agent AND AS  ISSUING BANK,
      AND THE BANK OF NOVA SCOTIA INDIVIDUALLY AND AS Documentation Agent
                        AND THE LENDERS PARTIES THERETO


Assignor: _________________________________________________

Assignee: _________________________________________________

Effective Date of Assignment: _________________, 199__



                                                Percentage Assigned (to at
                    Principal Amount (sum       least 8 decimals) shown as a
Assigned Loans      of Commitment and           percentage of aggregate
     and            outstanding amounts)        original principal amount
Commitments              Assigned                     of all Lenders
- -----------              --------                     --------------

Revolving Credit Loans
and Commitments       $____________________               _______%


Assignee's Base Rate                        Address for Notice:
Lending Office

__________________________             ___________________________
__________________________             ___________________________
__________________________             ___________________________

Assignee's Eurodollar                    Telex No.:_______________________
Lending Office

___________________________              Telecopy No.:____________________
___________________________
___________________________

                                      D-4

                                   EXHIBIT E

                         FORM OF BORROWING BASE REPORT



Pursuant to subsection 5.15(h) of the Credit Agreement dated as of June 7, 1996,
among  Tesoro  Petroleum  Corporation,  Banque Paribas, individually, as Issuing
Bank and as Administrative Agent, The  Bank of Nova Scotia, individually, and as
Documentation Agent, and the other financial institutions  parties  thereto  (as
amended,  restated, modified or supplemented and in effect from time to time the
"Credit Agreement", defined terms from which being used herein with the meanings
assigned  to  such  terms  in  the  Credit  Agreement),  the  undersigned hereby
certifies to the Administrative Agent and the Lenders  that  the  inventory  and
accounts have been valued in accordance with the terms of the Credit Agreement.

I.  The Borrowing Base as of __________________________ was $___________________
    computed as follows:

    A.   Eligible Accounts

         1.   Eligible Accounts
              (see Schedule I)                        $______________
         2.   80% of Line I.A.1                       $______________

    B.   Eligible Inventory

         1.   Loan Value of Eligible Inventory
              (see Schedule II)                       $______________
         2.   60% of Line I.B.1.                      $______________

    C.   E&P Borrowing Base                           $______________

         BORROWING BASE (Sum of Lines 1.A.2, I.B.2 and
           I.C.1)                                     $______________

    Certified as of the ______ day of _________________________.


                             TESORO PETROLEUM CORPORATION


                             By:_____________________________________
                             Printed Name:___________________________
                             Title:___________________________________

                                      E-1

                                   SCHEDULE I

                          SUMMARY OF ELIGIBLE ACCOUNTS

                                     [DATE]


         Loan Party                    Eligible Accounts
         ----------                    -----------------

    Tesoro Alaska Petroleum Company    $______________
    Tesoro Refining, Marketing &
      Supply Company                    _______________
    Kenai Pipe Line Company             _______________
    Tesoro Vostok Company               _______________


    TOTAL OF ELIGIBLE ACCOUNTS         $_______________

                                      E-2

                                  SCHEDULE II
                        LOAN VALUE OF ELIGIBLE INVENTORY
                                     [DATE]



A.  TESORO ALASKA PETROLEUM COMPANY

              State     Volume    Market         Market
    Product   Location  Bls.      Price/Bbl.     Value
    --------------------------------------------------

    ________  _________ ______    $__________    $________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________

    TOTAL LOAN VALUE OF TESORO ALASKA PETROLEUM COMPANY'S
    ELIGIBLE INVENTORY                           $________ (1)


B.  KENAI PIPE LINE COMPANY

              State     Volume    Market         Market
    Product   Location  Bls.      Price/Bbl.     Value
    --------------------------------------------------

    ________  _________ ______    $__________    $________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________

    TOTAL LOAN VALUE OF KENAI PIPELINE COMPANY'S
     ELIGIBLE INVENTORY                          $________ (2)

                                      E-3


C.  TESORO REFINING, MARKETING & SUPPLY COMPANY

              State     Volume    Market         Market
    Product   Location  Bls.      Price/Bbl.     Value
    --------------------------------------------------

    ________  _________ ______    $__________    $________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________
    ________  _________ ______    ___________    _________

    TOTAL LOAN VALUE OF TESORO REFINING, MARKETING
      & SUPPLY COMPANY'S ELIGIBLE INVENTORY      $________ (3)


D.  TOTAL LOAN VALUE OF ELIGIBLE INVENTORY
      (Sum of Lines (1), (2) and (3))            $________ (4)

                                      E-4

                                   EXHIBIT F

                    FORM OF LETTER TO HYDROCARBON PURCHASERS

                           [Letterhead of Mortgagor]



                            ________________, 19___



[Purchaser of Hydrocarbons]

    Re:  [Descriptions of Field and Division Order Identification Number]

Gentlemen:

    You    are   currently   paying   for   purchases   of   hydrocarbons   from
________________________ ("_______________") with respect to the above property.
By instrument entitled  ______________________  (the "Mortgage"), ______________
has mortgaged its interest in this property to ____________________________ (the
"Bank ").  The Mortgage provides for an assignment to the Bank of  the  proceeds
arising  from  the  purchases  of  hydrocarbons  from  the  properties mortgaged
thereby, which  properties  include  the  above  property.   Notwithstanding the
foregoing, you are directed to continue to make checks, wire transfers and other
remittances and payments (collectively, the "Payments")  payable  and  to  mail,
wire  transfer  or otherwise direct all Payments to Tesoro E&P Company, L.P., or
its designee, unless and until you should receive from the Bank contrary written
instructions.

                             ____________________________________

                             By: ________________________________
                                  Name:
                                  Title:


                             ____________________________________
                             [Name of Bank]


                             By: ________________________________
                                  Name:
                                  Title:

                                      F-1