ULTRAMAR DIAMOND SHAMROCK CORP
10-Q, 1999-05-13
PETROLEUM REFINING
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q


       QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

                      For the quarter ended March 31, 1999

                         Commission File Number 1-11154

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

                      ULTRAMAR DIAMOND SHAMROCK CORPORATION

              Incorporated under the laws of the State of Delaware
                  I.R.S. Employer Identification No. 13-3663331

                            6000 North Loop 1604 West
                          San Antonio, Texas 78249-1112
                        Telephone number: (210) 592-2000

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

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                                  Yes X No ____


As of April 30, 1999,  86,587,000 shares of Common Stock,  $0.01 par value, were
outstanding  and the  aggregate  market value of such stock as of April 30, 1999
was $1,996,919,000.

<PAGE>

                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                                    FORM 10-Q
                                 MARCH 31, 1999

                                TABLE OF CONTENTS
                                                                            Page

                         PART I - FINANCIAL INFORMATION

Item 1.  Financial Statements

     Consolidated Balance Sheets as of March 31, 1999 and
          December 31, 1998..................................................  3

      Consolidated Statements of Income for the Three Months 
          Ended March 31, 1999 and 1998......................................  4

      Consolidated Statements of Cash Flows for the Three Months 
          Ended March 31, 1999 and 1998......................................  5

      Consolidated Statements of Comprehensive Income for the 
          Three Months Ended March 31, 1999 and 1998.........................  6

      Notes to Consolidated Financial Statements.............................  7

Item 2.  Management's Discussion and Analysis of Financial Condition 
          and Results of Operations.......................................... 11

Item 3.  Quantitative and Qualitative Disclosures About Market Risk.......... 19

                           PART II - OTHER INFORMATION

Item 1.  Legal Proceedings................................................... 22

Item 4.  Submission of Matters to a Vote of Security Holders................. 22

Item 6.  Exhibits and Reports on Form 8-K.................................... 22

               SIGNATURE..................................................... 23

<PAGE>

PART I - FINANCIAL INFORMATION

Item 1.  Consolidated Financial Statements
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                           CONSOLIDATED BALANCE SHEETS
                        (in millions, except share data)
                                                                           March 31,       December 31,
                                                                             1999              1998
                                                                             ----              ----
                                                                          (Unaudited)

<S>                                                                        <C>              <C>
                                Assets
Current assets:
   Cash and cash equivalents........................................       $   108.4        $   176.1
   Accounts and notes receivable, net...............................           307.0            562.7
   Inventories......................................................           581.8            635.6
   Prepaid expenses and other current assets........................            30.4             33.0
   Deferred income taxes............................................            98.4             98.4
                                                                           ---------        ---------
      Total current assets..........................................         1,126.0          1,505.8
                                                                           ---------        ---------

Property, plant and equipment.......................................         4,463.7          4,423.2
Less accumulated depreciation and amortization......................        (1,208.4)        (1,162.0)
                                                                           ---------        ---------
   Property, plant and equipment, net...............................         3,255.3          3,261.2
Other assets, net...................................................           582.1            548.0
                                                                           ---------        ---------
    Total assets....................................................       $ 4,963.4        $ 5,315.0
                                                                           =========        =========

                 Liabilities and Stockholders' Equity
Current liabilities:
   Notes payable and current portion of long-term debt..............       $     4.8        $     5.8
   Accounts payable.................................................           301.7            366.0
   Accrued liabilities..............................................           343.2            402.4
   Taxes other than income taxes....................................           289.7            343.0
   Income taxes payable.............................................            24.4             28.9
                                                                           ---------        ---------
      Total current liabilities.....................................           963.8          1,146.1
                                                                           ---------        ---------

Long-term debt, less current portion................................         1,762.2          1,926.2
Other long-term liabilities.........................................           443.3            453.7
Deferred income taxes...............................................           212.0            205.0
Commitments and contingencies

Company obligated preferred stock of subsidiary.....................           200.0            200.0

Stockholders' equity:
   Common Stock, par value $0.01 per share:
     250,000,000 shares authorized, 86,556,000 and
     86,558,000 shares issued and outstanding as of
     March 31, 1999  and December 31, 1998..........................             0.9              0.9
   Additional paid-in capital.......................................         1,513.1          1,512.7
   Treasury stock...................................................          (100.6)          (100.1)
   Retained earnings................................................            74.6             82.5
   Accumulated other comprehensive loss ............................          (105.9)          (112.0)
                                                                           ---------        ---------
     Total stockholders' equity.....................................         1,382.1          1,384.0
                                                                           ---------        ---------
     Total liabilities and stockholders' equity.....................       $ 4,963.4        $ 5,315.0
                                                                           =========        =========

          See accompanying notes to consolidated financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                        CONSOLIDATED STATEMENTS OF INCOME
            (Unaudited, in millions, except share and per share data)

                                                                          Three Months Ended March 31,
                                                                          ----------------------------
                                                                             1999               1998
                                                                             ----               ----
<S>                                                                       <C>                  <C>
    Sales and other revenues (including excise taxes)..............       $2,725.7             $2,789.6
                                                                          --------             --------

    Operating costs and expenses:
       Cost of products sold.......................................        1,547.2              1,621.3
       Operating expenses..........................................          255.7                287.9
       Selling, general and administrative expenses................           87.4                 78.6
       Taxes other than income taxes...............................          712.8                678.3
       Depreciation and amortization...............................           57.1                 65.4
                                                                          --------             --------
          Total operating costs and expenses.......................        2,660.2              2,731.5
                                                                          --------             --------

    Operating income...............................................           65.5                 58.1
      Interest income..............................................            2.9                  2.1
      Interest expense.............................................          (38.6)               (36.1)
      Equity income from Diamond-Koch..............................            1.5                   -
      Gain on sale of property, plant and equipment................              -                 7.0
                                                                          --------             --------

    Income before income taxes and dividends of
      subsidiary...................................................           31.3                 31.1
      Provision for income taxes...................................           12.7                 12.1
      Dividends on preferred stock of subsidiary...................            2.6                  2.6
                                                                          --------             --------
    Net income.....................................................       $   16.0             $   16.4
                                                                          ========             ========

    Net income per share:
       Basic.......................................................          $0.18               $0.18
       Diluted.....................................................          $0.18               $0.18

    Weighted average number of shares (in thousands):
       Basic.......................................................         86,557             87,284
       Diluted.....................................................         86,643             90,882

    Dividends per share:
       Common Shares...............................................         $0.275             $0.275
       5% Cumulative Convertible Preferred Shares..................           -                $0.625

          See accompanying notes to consolidated financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                            (Unaudited, in millions)

                                                                        Three Months Ended March 31,
                                                                        ----------------------------
                                                                          1999                1998
                                                                          ----                ----
<S>                                                                       <C>              <C>
Cash Flows from Operating Activities:
Net income......................................................          $  16.0          $   16.4
Adjustments to reconcile net income to
  net cash provided by operating activities:
   Depreciation and amortization................................             57.1              65.4
   Provision for losses on receivables..........................              1.7               4.9
   Equity income from Diamond-Koch..............................             (1.5)              -
   Loss (gain) on sale of property, plant and equipment.........              0.1              (7.5)
   Deferred income tax provision................................              6.0               2.9
   Other, net...................................................              0.5              (4.2)
   Changes in operating assets and liabilities:
     Decrease in accounts and notes receivable..................            249.3             154.6
     Decrease in inventories....................................             56.8              97.1
     Decrease in prepaid expenses and other current assets......              2.7              13.2
     Increase in other assets...................................             (8.8)             (7.7)
     Decrease in accounts payable and other current liabilities.           (195.4)           (324.6)
     Decrease in other long-term liabilities....................            (13.0)              5.9
                                                                          -------          --------
       Net cash provided by operating activities................            171.5              16.4
                                                                          -------          --------

Cash Flows from Investing Activities:
 Capital expenditures...........................................            (35.3)            (28.8)
 Deferred refinery maintenance turnaround costs.................            (18.3)             (7.5)
 Proceeds from sales of property, plant and equipment...........              2.2              27.8
                                                                          -------          --------
   Net cash used in investing activities........................            (51.4)             (8.5)
                                                                          -------          --------

Cash Flows from Financing Activities:
 Net change in commercial paper and short-term borrowings.......           (162.6)             25.6
 Repayment of long-term debt....................................             (2.7)             (2.2)
 Payment of cash dividends......................................            (23.8)            (24.9)
 Other, net.....................................................              0.1               4.5
                                                                          -------          --------
   Net cash provided by (used in) financing activities..........           (189.0)              3.0
                                                                          -------          --------

Effect of exchange rate changes on cash.........................              1.2               0.1
                                                                          -------          --------

Net Increase (Decrease) in Cash and Cash Equivalents............            (67.7)             11.0
Cash and Cash Equivalents at Beginning of Period................            176.1              92.0
                                                                          -------          --------

Cash and Cash Equivalents at End of Period......................          $ 108.4          $  103.0
                                                                          =======          ========

          See accompanying notes to consolidated financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
                            (Unaudited, in millions)

                                                                        Three Months Ended March 31,
                                                                        ----------------------------
                                                                          1999                1998
                                                                          ----                ----
<S>                                                                       <C>                 <C>
Net income......................................................          $16.0               $16.4

Other comprehensive income (loss):
   Foreign currency translation adjustment......................            7.2                 3.7
   Minimum pension liability adjustment, net of income taxes....           (1.1)                  -
                                                                          -----               -----

Comprehensive income............................................          $22.1               $20.1
                                                                          =====               =====

          See accompanying notes to consolidated financial statements.
</TABLE>
<PAGE>


                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 1999
                                   (Unaudited)

NOTE 1:  Basis of Presentation

The accompanying  unaudited consolidated financial statements have been prepared
by Ultramar  Diamond  Shamrock  Corporation  (the Company),  in accordance  with
generally  accepted  accounting  principles for interim financial  reporting and
with Securities and Exchange  Commission rules and regulations for Form 10-Q. In
the opinion of  management,  all  adjustments  (consisting  of normal  recurring
accruals) considered necessary for a fair presentation have been included. These
unaudited  consolidated  financial statements should be read in conjunction with
the audited consolidated  financial statements and notes thereto included in the
Company's annual report on Form 10-K for the year ended December 31, 1998.

Operating  results for the three months ended March 31, 1999 are not necessarily
indicative of the results that may be expected for the year ending  December 31,
1999. The results of operations may be affected by seasonal factors, such as the
demand for petroleum products and working capital  requirements in the Northeast
System,  which vary significantly  during the year; or industry factors that may
be specific to a particular  period,  such as movements in and the general level
of crude oil  prices,  the demand for and prices of refined  products,  industry
supply capacity and maintenance turnarounds.

Certain  previously  reported  amounts have been  reclassified to conform to the
1999 presentation.

NOTE 2:  Inventories

Inventories consisted of the following:
<TABLE>
<CAPTION>
                                                                             March 31,        December 31,
                                                                               1999               1998
                                                                               ----               ----
                                                                                    (in millions)
      <S>                                                                     <C>               <C>
      Crude oil and other feedstocks..........................................$189.5            $283.9
      Refined and other finished products and convenience store items..........336.0             296.9
      Materials and supplies................................................... 56.3              54.8
                                                                               -----            ------
           Total inventories..................................................$581.8            $635.6
                                                                               =====             =====
</TABLE>
<PAGE>


NOTE 3:  Computation of Net Income Per Share

Basic net income per share is  calculated  as net income  less  preferred  stock
dividends  divided by the weighted average number of Common Shares  outstanding.
Diluted  net  income  per share  assumes,  when  dilutive,  issuance  of the net
incremental  shares from stock options and restricted  stock,  and, in 1998, the
conversion  of the 5% Cumulative  Convertible  Preferred  Shares.  The following
table  reconciles  the  net  income  amounts  and  share  numbers  used  in  the
computation of net income per share (in millions, except per share data).

<TABLE>
<CAPTION>
                                                                        Three Months Ended March 31,
                                                                        ----------------------------
                                                                          1999                1998
                                                                          ----                ----
<S>                                                                       <C>                <C>
Basic Net Income Per Share:
Weighted average number of Common Shares outstanding
    (in thousands)...............................................         86,557             87,284
                                                                          ======             ======

Net income.......................................................         $ 16.0             $ 16.4
Dividends on 5% Cumulative Convertible Preferred
     Stock.......................................................              -                1.1
                                                                          ------             ------
Net income applicable to Common Shares...........................         $ 16.0             $ 15.3
                                                                          ======             ======

Basic net income per share.......................................         $ 0.18             $ 0.18
                                                                          ======             ======

Diluted Net Income Per Share:
Weighted average number of Common Shares outstanding
    (in thousands)...............................................         86,557             87,284

Net effect of dilutive stock options based on the treasury stock
method using the average market price............................             86                804

Assumed conversion of 5% Cumulative Convertible Preferred
  Shares (prior to conversion in March 1998).....................              -              2,794
                                                                          ------             ------

Weighted average common equivalent shares........................         86,643             90,882
                                                                          ======             ======

Net income.......................................................         $ 16.0             $ 16.4
                                                                          ======             ======

Diluted net income per share.....................................         $ 0.18             $ 0.18
                                                                          ======             ======
</TABLE>

NOTE 4:  Restructuring and Other Charges

In June 1998, the Company adopted a three-year  restructuring plan to reduce its
retail  cost  structure  by  eliminating  341  positions  to  improve  operating
efficiencies and to close and sell 316  under-performing  convenience stores. In
addition,  the Company restructured certain pipeline and terminal operations and
support  infrastructure  resulting in the  elimination of 125  positions.  As of
March 31, 1999, 88 convenience stores were sold or closed and 276 employees were
terminated under the retail and pipeline and terminal restructuring plans.

In December 1998, the Company  finalized  plans to eliminate  approximately  300
non-essential  jobs,  programs and expenses  and to  implement  new  initiatives
designed to further reduce capital  employed and improve  earnings.  As of March
31, 1999, 95 employees were terminated under the profit improvement program.

<PAGE>
Changes in accrued restructuring costs for the quarter ended March 31, 1999 were
as follows:

<TABLE>
<CAPTION>
                                            Balance at                                              Balance at
                                         December 31, 1998        Payments      Reductions        March 31, 1999
                                         -----------------        --------      ----------        --------------
<S>                                            <C>                   <C>            <C>                <C>
Severance and related costs                    $19.0                 $6.8           $0.3               $11.9
Lease buyout costs                              14.0                  0.1            0.8                13.1
Fuel system removal costs                       16.1                  0.9            2.8                12.4
                                               -----                 ----           ----               -----
                                               $49.1                 $7.8           $3.9               $37.4
                                               =====                 ====           ====               =====
</TABLE>

NOTE 5:  Commitments and Contingencies

The  Company's  operations  are subject to  environmental  laws and  regulations
adopted by various governmental authorities.  Site restoration and environmental
remediation  and  clean-up  obligations  are  accrued  either when known or when
considered probable and reasonably  estimable.  Total future environmental costs
are  difficult  to  assess  and  estimate  due to  unknown  factors  such as the
magnitude of possible contamination,  the timing and extent of remediation,  the
determination  of the  Company's  liability  in  proportion  to  other  parties,
improvements in cleanup  technologies and the extent to which environmental laws
and regulations may change in the future.  Although environmental costs may have
a significant  impact on results of operations  for any single year, the Company
believes  that  such  costs  will  not have a  material  adverse  effect  on the
Company's financial position.

There are various legal  proceedings and claims pending against the Company that
arise in the ordinary course of business. It is management's opinion, based upon
advice of legal counsel,  that these matters,  individually or in the aggregate,
will not have a material adverse effect on the Company's  financial  position or
results of operations.

NOTE 6:  Accounts Receivable Securitization

In March  1999,  the  Company  arranged  a  $250.0  million  revolving  accounts
receivable  securitization  facility.  On an ongoing  basis,  the Company  sells
certain   accounts   receivable   to  Coyote   Funding,   L.L.C.   (Coyote),   a
non-consolidated,   wholly-owned  subsidiary,  which  then  sells  a  percentage
ownership in such receivables,  without  recourse,  to a third party cooperative
corporation.  The  gross  proceeds  resulting  from the  sale of the  percentage
ownership  interest in the  receivables  totaled  $222.0 million as of March 31,
1999. The Company's  retained interest in receivables sold to Coyote is included
in accounts and notes receivable,  net in the accompanying  consolidated balance
sheet.  Discounts  and net  expenses  associated  with the  sale of  receivables
totaled $1.3 million and are  included in interest  expense in the  consolidated
statement of income for the three months ended March 31, 1999.

NOTE 7:  Business Segments

The   Company   has   three   reportable   segments:    Refining,   Retail   and
Petrochemical/NGL.  The Refining segment includes refinery,  wholesale,  product
supply and  distribution,  and  transportation  operations.  The Retail  segment
includes  Company-operated  convenience  stores,  dealers/jobbers  and truckstop
facilities,  cardlock and home  heating oil  operations.  The  Petrochemical/NGL
segment  includes  the equity  earnings  from  Diamond-Koch  and  earnings  from
Nitromite  fertilizer,  NGL  marketing  and  certain  NGL  pipeline  operations.
Diamond-Koch  is a 50-50 joint  venture  primarily  related to the Mont  Belvieu
petrochemical assets of the Company and Koch Industries, Inc.

<PAGE>

The  Company's  reportable  segments  are  strategic  business  units that offer
different  products and services.  They are managed  separately as each business
requires  unique  technology  and marketing  strategies.  The Company  evaluates
performance  based on  earnings  before  interest,  taxes and  depreciation  and
amortization   (EBITDA).   Intersegment   sales  are   generally   derived  from
transactions made at prevailing market rates.

<TABLE>
<CAPTION>
                                                                       Petrochemical/
                                            Refining      Retail            NGL           Corporate        Total
                                            --------      ------            ---           ---------        -----
                                                                       (in millions)
<S>                                          <C>          <C>              <C>              <C>            <C>
Three months ended March 31, 1999:
   Sales and other revenues from
      external customers...............      $1,435.2     $1,266.0          $ 24.5          $  -           $2,725.7
   Intersegment sales..................         488.2          2.1             -               -              490.3
   EBITDA..............................         110.3         52.9             1.0           (41.6)           122.6
   Depreciation and amortization.......          39.8         16.2             0.3             0.8             57.1
   Operating income (loss).............          70.5         36.7             0.7           (42.4)            65.5
   Total assets........................       3,458.2      1,265.7           167.6            71.9          4,963.4

Three months ended March 31, 1998:
   Sales and other revenues from
      external customers...............       1,280.0      1,428.3            81.3             -            2,789.6
   Intersegment sales..................         521.1          1.0             6.1             -              528.2
   EBITDA..............................          70.1         67.3            15.5           (29.4)           123.5
   Depreciation and amortization.......          37.7         23.1             2.4             2.2             65.4
   Operating income (loss).............          32.4         44.2            13.1           (31.6)            58.1
   Total assets........................       3,199.6      1,314.3           224.1           563.6          5,301.6
</TABLE>

The following  summarizes the  reconciliation  of reportable  segment  operating
income to  consolidated  operating  income for the three  months ended March 31,
1999 and 1998 (in millions):

                                                            1999       1998
                                                            ----       ----
Operating income:
  Total operating income for reportable segments...        $107.9     $ 89.7
  Other income (loss)..............................         (42.4)     (31.6)
                                                            -----      -----
     Consolidated operating income.................        $ 65.5     $ 58.1
                                                            =====       ====

NOTE 8:  Diamond 66

On March 19,  1999,  the  Company  and  Phillips  Petroleum  Company  terminated
discussions  related to the formation of a proposed  joint venture  (Diamond 66)
between  the two  companies.  During  the first  quarter  of 1999,  the  Company
expensed $11.0 million of transaction costs incurred related to the formation of
Diamond 66,  which costs are  included  in selling,  general and  administrative
expenses.

NOTE 9:  Proposed Sale of the Michigan System

In December  1998,  the  Company  announced  plans to  consider  the sale of the
Michigan  operations,  which  consist of the Alma  Refinery,  product  and crude
pipelines,  four terminals and 183 convenience  stores. The Company has received
and is currently reviewing several proposals from interested  parties;  however,
no  agreements  or final  decision has been made  relating to a possible sale of
such assets.

NOTE 10:  Subsequent Events

On May 4, 1999, the Board of Directors  declared a quarterly  dividend of $0.275
per Common Share payable on June 3, 1999 to holders of record on May 20, 1999.

<PAGE>

Item 2.  Management's Discussion and Analysis of Financial Condition and Results
         of Operations

The Company

Ultramar  Diamond Shamrock  Corporation  (the Company) is a leading  independent
refiner and retailer of  high-quality  refined  products and  convenience  store
merchandise  in the central and  southwest  regions of the United States (the US
System),  and the  northeast  United  States and eastern  Canada (the  Northeast
System).  Its operations  consist of seven  refineries,  over 5,900  convenience
stores,  pipelines,  a home  heating oil  business,  and  related  petrochemical
operations.

The  Company's  operating  results  are  affected by  Company-specific  factors,
primarily its refinery utilization rates and maintenance  turnarounds;  seasonal
factors,  such  as  the  demand  for  petroleum  products  and  working  capital
requirements;  and industry factors, such as movements in and the level of crude
oil prices,  the demand for and prices of refined  products and industry  supply
capacity.  The  effect of crude oil price  changes  on the  Company's  operating
results is  determined,  in part,  by the rate at which refined  product  prices
adjust to reflect such changes.  As a result,  the Company's  earnings have been
volatile in the past and may be volatile in the future.

On  March  19,  1999 the  Company  and  Phillips  Petroleum  Company  (Phillips)
terminated  discussions  related to the  formation of a proposed  joint  venture
(Diamond 66) between the two  companies.  During the first quarter of 1999,  the
Company  expensed  $11.0 million of transaction  costs  incurred  related to the
formation of Diamond 66.

Seasonality

In the Northeast  System,  demand for petroleum  products  varies  significantly
during the year.  Distillate  demand  during the first and fourth  quarters  can
range  from 30% to 40% above the  average  demand  during  the  second and third
quarters.  The  substantial  increase in demand for home  heating oil during the
winter months  results in the Company's  Northeast  System having  significantly
higher  accounts  receivable  and  inventory  levels during the first and fourth
quarters  of each year.  The  Company's  US System is less  affected by seasonal
fluctuations in demand than its operations in the Northeast System.  The working
capital  requirements  of  the  US  System,  though  substantial,   show  little
fluctuation  throughout the year. Both the US and Northeast Systems are impacted
by the increased demand for gasoline during the summer driving season.

<PAGE>

Results of Operations

Three Months Ended March 31, 1999 Compared to Three Months Ended March 31, 1998

Financial and operating data by geographic area for the three months ended March
31, 1999 and 1998 are as follows:

Financial Data:
<TABLE>
<CAPTION>
                                                                  Three Months Ended March 31,
                                            --------------------------------------------------------------------------
                                                          1999                                    1998
                                            ----------------------------------      ----------------------------------
                                                US     Northeast       Total            US     Northeast       Total
                                                --     ---------       -----            --     ---------       -----
                                                                          (in millions)
<S>                                         <C>            <C>        <C>           <C>            <C>        <C>
Sales and other revenues...............     $2,146.6       $579.1     $2,725.7      $2,132.8       $656.8     $2,789.6
Cost of products sold (1)..............      1,241.8        305.4      1,547.2       1,256.0        365.3      1,621.3
Operating expenses.....................        227.5         28.2        255.7         257.0         30.9        287.9
Selling, general and
  administrative expenses (2)..........         48.0         39.4         87.4          38.3         40.3         78.6
Taxes other than income taxes..........        543.4        169.4        712.8         499.8        178.5        678.3
Depreciation and amortization..........         47.9          9.2         57.1          56.5          8.9         65.4
                                             -------        -----      -------       -------        -----      -------
Operating income.......................     $   38.0       $ 27.5         65.5      $   25.2       $ 32.9         58.1
                                             =======        =====                    =======        =====
Interest income........................                                    2.9                                     2.1
Interest expense.......................                                  (38.6)                                  (36.1)
Equity income from Diamond-Koch (3)....                                    1.5                                     -
Gain on sale of assets (4).............                                      -                                   7.0
                                                                       ---------                               -------
Income before income taxes and
  dividends of subsidiary..............                                   31.3                                    31.1
Provision for income                                                      12.7                                    12.1
taxes.............
Dividends on subsidiary stock..........                                    2.6                                     2.6
                                                                       ---------                               -------
Net income.............................                               $   16.0                                $   16.4
                                                                       =========                               =======
</TABLE>
(1) In March 1998, the Company  recorded a $13.6 million  non-cash  reduction in
the carrying value of inventories  due to the  significant  market drop in crude
oil and refined product prices during the first quarter of 1998.

(2) In March 1999,  the Company  expensed  $11.0  million of  transaction  costs
associated with the termination of the proposed Diamond 66 joint venture.

(3) In September  1998,  the Company  contributed  certain of its  petrochemical
assets to the Diamond-Koch joint venture, which is being accounted for using the
equity accounting method.  Operating income in the first quarter of 1998 for the
petrochemical assets contributed was $4.9 million, excluding overhead.

(4) In March 1998,  the Company  recognized a $7.0 million gain on the sale of a
25% interest in a pipeline and terminal facility.

<PAGE>

Operating Data:
- --------------
                                                   Three Months Ended March 31,
                                                   ----------------------------
                                                       1999         1998
                                                       ----         ----
US System

   Mid-Continent Refineries (1)
        Throughput (bpd)............................. 390,600      402,300
        Margin (dollars per barrel) (2)..............  $ 3.27       $ 3.10
        Operating cost (dollars per barrel)..........  $ 1.87       $ 2.02

   Wilmington Refinery
        Throughput (bpd)............................. 131,800      124,000
        Margin (dollars per barrel)..................  $ 5.53       $ 4.82
        Operating cost (dollars per barrel)..........  $ 1.70       $ 2.28

   Retail
        Fuel volume (bpd)............................ 170,900      167,300
        Fuel margin (cents per gallon)...............    10.9         13.9
        Merchandise sales ($1,000/day)............... $ 3,188      $ 2,927
        Merchandise margin (%).......................   26.1%        30.7%

Northeast System

   Quebec Refinery
        Throughput (bpd)............................. 158,200      156,500
        Margin (dollars per barrel)(2)...............  $ 1.68       $ 2.23
        Operating cost (dollars per barrel)..........  $ 0.86       $ 1.03

   Retail
        Fuel volume (bpd)............................  73,500       70,100
        Overall margins (cents per gallon) (3).......    25.8         29.1

(1) The Mid-Continent  Refineries include the Alma, Ardmore,  Denver,  McKee and
Three Rivers Refineries.

(2) Refinery  margins for 1998 exclude the impact of the non-cash charge for the
reduction in the carrying value of crude oil and refined product inventories due
to the drop in crude oil and refined product prices. Had the non-cash charge for
the reduction of inventories been included in the refinery margin  computations,
the 1998 refinery margins would have been $2.91 per barrel for the Mid-Continent
Refineries and $1.75 per barrel for the Quebec Refinery.

(3) Retail marketing overall margin reported for the Northeast System represents
a blend of gross  margin for  Company  and  dealer-operated  retail  outlets and
convenience stores, home heating oil sales and cardlock operations.

<PAGE>

General

Net income  for the  quarter  ended  March 31,  1999  totaled  $16.0  million as
compared  to $16.4  million  for the quarter  ended  March 31,  1998.  The first
quarter of 1999  included a $6.6  million  after-tax  charge to record  expenses
associated  with the termination of the proposed  Diamond 66 joint venture.  The
first  quarter of 1998 included a $4.3 million  after-tax  gain on the sale of a
25% interest in a pipeline and terminal  facility and an $8.3 million  after-tax
non-cash  charge to reduce  inventories  due to the continuing drop in crude oil
and refined product prices. Excluding these unusual items, net income would have
been $22.6  million in 1999 as compared to $20.4 million in 1998. On a per share
basis, basic and diluted net income per share for both the first quarter of 1999
and 1998 was $0.18 per share.

US System

The US System had  operating  income of $38.0  million for the first  quarter of
1999, as compared to $25.2  million for the first quarter of 1998.  The increase
in operating  income was  primarily due to improved  refinery  margins and lower
operating expenses.

Overall, US refining  operations improved  significantly over 1998 levels due to
higher refinery margins and lower operating  costs. The lower industry  refining
margins  resulting from high  inventories  and declining crude oil prices in the
early part of the first quarter of 1999  negatively  impacted the  Mid-Continent
Refineries' margin.  However,  the Mid-Continent  Refineries benefited $1.15 per
barrel from the positive  effect of buying their crude oil 40 days in advance in
the  latter  part of the  quarter  when crude oil  prices  began to rise,  which
resulted in a $3.27 per barrel refinery margin for the first quarter of 1999. In
addition, the operating costs were lower in 1999 by $0.15 per barrel as compared
to 1998 due to lower utility and maintenance expenses.  The decrease in refining
throughput for the  Mid-Continent  Refineries,  from 402,300  barrels per day in
1998 to 390,600  barrels per day in 1999, was due to planned  production cuts in
January and February  1999  implemented  to counter the effect of weak  industry
margins.

The Wilmington  Refinery  margin improved 14.7% from $4.82 per barrel in 1998 to
$5.53 per barrel 1999 as the Company  benefited from the supply imbalance in the
California market, which was caused by unplanned shutdowns at several West Coast
refineries. In addition, throughput at the Wilmington Refinery increased 6.3% to
131,800  barrels  per  day due to the  debottlenecking  of the  fluid  catalytic
cracking unit (FCCU) in December 1998.

The US retail  operations  were  negatively  impacted  by the sharp  increase in
wholesale  gasoline prices,  which increased faster than the retail pump prices.
The retail fuel margin declined from 13.9 cents per gallon in 1998 to 10.9 cents
per gallon in 1999. However,  the Company realized a 2.2% increase in the retail
fuel  volume in 1999 as compared to 1998 due to an  aggressive  pricing  program
initiated to increase per store volumes.  Partially offsetting the negative 1999
fuel  margin was the 8.9%  growth in  merchandise  sales in 1999 as  compared to
1998.  The  merchandise  margin,  however,  declined to 26.1% in 1999 due to the
increase in cigarette prices, which could not be fully passed on to customers.

Selling,  general and administrative expenses for the first quarter of 1999 were
$9.7 million  higher than in the first  quarter of 1998 due to the $11.0 million
of transaction  costs associated with the termination of the proposed Diamond 66
joint venture.

Northeast System

Sales and other revenues in the Northeast  System  decreased  $77.7 million from
$656.8  million  in the first  quarter  of 1998 to $579.1  million  in the first
quarter  of 1999.  The  decline in sales was due to  reduced  selling  prices of
refined products as a result of lower crude oil prices compared to 1998.

Throughput  for the first quarter of 1999  increased  1,700 barrels per day over
the first quarter of 1998.  The lower  throughput  for the first quarter of 1998
was  attributed  to the  shutdown of the crude unit for  repairs.  The  refinery
margin  decreased $0.55 per barrel from $2.23 per barrel in the first quarter of

<PAGE>

1998 to $1.68 per barrel in the first  quarter of 1999  reflecting  high product
inventories  and the resulting  reduced  refinery  margins in the Atlantic Basin
since the beginning of 1999.  Partially  offsetting the reduced  refinery margin
were lower operating costs which declined to $0.86 per barrel in 1999 from $1.03
per barrel in 1998 due to lower supply and distribution  expenses related to the
wholesale operations.

Retail  operations  benefited  from a 4.9% increase in fuel volumes  despite the
warm  temperatures in the Northeast which reduced home heating oil volumes.  The
overall retail margin declined to 25.8 cents per gallon in 1999 as the increased
sales were generated from the motorist and cardlock businesses, which have lower
margins as compared to the home heating oil business.

Selling,  general and administrative expenses for the first quarter of 1999 were
comparable  to the  first  quarter  of 1998 due to lower  haulage  and  delivery
expenses in the home heating oil business, which were partially offset by higher
administrative   expenses  associated  with  severance  costs  for  a  departing
executive.

Corporate

Interest  expense of $38.6 million in the first quarter of 1999 was $2.5 million
higher  than  in  the  corresponding  quarter  of  1998  due to  higher  average
borrowings in 1999 as compared to 1998.

The  consolidated  income tax  provisions for the first quarter of 1999 and 1998
were based upon the Company's estimated effective income tax rates for the years
ending  December  31,  1999 and  1998 of  40.0%  and  39.0%,  respectively.  The
consolidated effective income tax rates exceed the U.S. Federal statutory income
tax rate primarily due to state income taxes, the effects of foreign  operations
and the amortization of nondeductible goodwill.

Outlook

The  Company's  earnings  depend  largely on refining  and retail  margins.  The
petroleum  refining and marketing industry has been and continues to be volatile
and highly  competitive.  The cost of crude oil purchased by the Company as well
as the price of refined  products sold by the Company have fluctuated  widely in
the past. As a result of the historic  volatility of refining and retail margins
and the  fact  that  they  are  affected  by  numerous  diverse  factors,  it is
impossible to predict future margin levels.

Industry  refining  margins  during  the  first  quarter  of 1999  continued  in
record-low territory until mid-February when margins finally bottomed-out.  With
margins  approaching  zero, or in the case of the Chicago market  dropping below
zero, and with storage for refined  products  filled to capacity,  some refiners
made  significant  production cuts and margins  started to improve.  At the same
time, several West Coast refineries reduced run rates as a result of a series of
mishaps and unplanned  outages.  With margins already turning around  throughout
the United States,  the disruption in the tightly balanced West Coast market had
a ripple  effect  throughout  the country and the  quarter  ended with  improved
refining margins.

As the second quarter of 1999 begins,  crude oil prices have risen as OPEC seems
to be making good on their promise to cut crude oil output. The immediate effect
has been a reduction  in refining  margins as the run-up in crude oil prices has
outpaced  increases in wholesale  gasoline  prices.  At the same time,  the deep
discounts  for  crude  oil  purchased  in the  prompt  month  that  led to  full
utilization of refining  capacity  throughout  1998 and into early 1999 have now
been replaced with the more normal premium for prompt month barrels. The premium
to  purchase  current  barrels  acts as a  disincentive  for  refiners to refine
barrels in excess of current  requirements  because  next  month's  barrels  are
available at a discount from today's prices. As a consequence, utilization rates
should  retreat  from last  year's  record  highs,  and with  demand for refined
products  still robust,  inventory  levels should  decline.  As crude oil prices
stabilize and refined product inventories  decline,  refining and retail margins
should improve.

See "Certain Forward-Looking Statements."

<PAGE>

Capital Expenditures

The petroleum refining and marketing  industry is a capital intensive  business.
Significant  capital  requirements  include  expenditures  to upgrade or enhance
refinery operations to meet environmental regulations and maintain the Company's
competitive  position,  as well as to acquire,  build and  maintain  broad-based
retail networks.  The capital  requirements of the Company's  operations consist
primarily of:

  - maintenance  expenditures,  such  as  those  required  to maintain equipment
    reliability and safety and to address environmental regulations; and

  - growth opportunity expenditures, such as those planned to expand and upgrade
    its retail business, to increase the capacity of certain refinery processing
    units  and  pipelines  and to construct  additional petrochemical processing
    units.

During the quarter  ended March 31, 1999,  capital  expenditures  totaled  $35.3
million of which $17.2 million  related to  maintenance  expenditures  and $18.1
million related to growth opportunity expenditures.  Approximately $12.4 million
and $4.2 million of costs have been incurred at the refineries and at the retail
level,  respectively,  for various maintenance expenditures.  During the quarter
ended  March 31,  1999,  the Company  also  incurred  $18.3  million in refinery
maintenance turnaround costs primarily at the Wilmington Refinery.

Growth opportunity expenditures for the quarter ended March 31, 1999 included:

  - $9.5 million associated with the implementation of the Company's new infor-
    mation technology system, and

  - $5.5 million to revamp the McKee Refinery's FCCU power train.

The  Company  is  continually  investigating  strategic  acquisitions  and other
business opportunities,  some of which may be material, that will complement its
current business activities.

The  Company  expects to fund its  capital  expenditures  from cash  provided by
operations and, to the extent  necessary,  from the proceeds of borrowings under
its bank credit  facilities and its commercial paper program discussed below. In
addition,  depending  upon its  future  needs and the cost and  availability  of
various  financing  alternatives,  the  Company  may,  from  time to time,  seek
additional debt or equity financing in the public or private markets.

Liquidity and Capital Resources

As of March  31,  1999,  the  Company  had cash and cash  equivalents  of $108.4
million.  The Company  currently has two committed,  unsecured  bank  facilities
which  provide a maximum of $700.0  million  U.S.  and $200.0  million  Cdn.  of
available credit, and a $700.0 million commercial paper program supported by the
committed, unsecured U.S. bank facility.

As of March 31, 1999, the Company had borrowing capacity of approximately $614.4
million  remaining  under its committed bank  facilities  and  commercial  paper
program  and had  approximately  $610.9  million  under  uncommitted,  unsecured
short-term lines of credit with various financial institutions.

In  addition  to its bank  credit  facilities,  the  Company  has  $1.0  billion
available  under  universal  shelf  registrations   previously  filed  with  the
Securities  and Exchange  Commission.  The net proceeds  from any debt or equity
offering  under the  universal  shelf  registrations  would add to the Company's
working capital and would be available for general corporate purposes.

The  Company  also has $69.1  million  available  pursuant  to  committed  lease
facilities  aggregating $355.0 million under which the lessors will construct or
acquire and lease to the Company primarily convenience stores.

The bank  facilities  and other debt  agreements,  as amended,  require that the
Company maintain certain financial ratios and other restrictive  covenants.  The
Company is in compliance  with such  covenants and believes that such  covenants

<PAGE>

will not have a significant impact on the Company's  liquidity or its ability to
pay  dividends.  The  Company  believes  its  current  sources  of funds will be
sufficient to satisfy its capital expenditure, working capital, debt service and
dividend requirements for at least the next twelve months.

Effective  March  29,  1999,  the  Company   established  a  revolving  accounts
receivable  securitization facility (Securitization Facility) which provides the
Company with the ability to sell up to $250.0 million of accounts  receivable on
an ongoing basis. In connection with the  Securitization  Facility,  the Company
sells, on a revolving  basis, an undivided  interest in certain of its trade and
credit card  receivables.  The  proceeds  from the sale of accounts  receivable,
which  totaled  $222.0  million  at March 31,  1999,  were  used to  reduce  the
Company's  outstanding  indebtedness  under its commercial  paper  program.  The
remaining  availability  under the  Securitization  Facility will be used, among
other purposes, to further reduce debt.

On May 4, 1999, the Board of Directors  declared a quarterly  dividend of $0.275
per Common Share payable on June 3, 1999, to holders of record on May 20 , 1999.

Cash Flows for the Three Months Ended March 31, 1999

During the first  quarter  ended March 31, 1999,  the  Company's  cash  position
decreased  $67.7  million to $108.4  million.  Net cash  provided  by  operating
activities was $171.5  million  including the receipt of $222.0 million from the
sale of trade and credit card  receivables  under the  Company's  Securitization
Facility.

Net cash used in investing  activities  during the quarter  ended March 31, 1999
totaled $51.4 million including $35.3 million for capital expenditures and $18.3
million for refinery maintenance turnaround costs.

Net cash used in financing  activities  during the quarter  ended March 31, 1999
totaled $189.0 million,  including  payments to reduce short-term  borrowings of
$162.6 million and for cash dividends totaling $23.8 million.

Exchange Rates

The value of the  Canadian  dollar  relative  to the U.S.  dollar  has  weakened
substantially  since the acquisition of the Canadian  operations in 1992. As the
Company's Canadian  operations are in a net asset position,  the weaker Canadian
dollar has reduced, in U.S. dollars,  the Company's net equity at March 31, 1999
by $104.8  million.  Although the Company expects the exchange rate to fluctuate
during 1999, it cannot reasonably predict its future movement.

With the exception of its crude oil costs,  which are U.S.  dollar  denominated,
fluctuations  in the Canadian  dollar  exchange rate will affect the U.S. dollar
amount of  revenues  and related  costs and  expenses  reported by the  Canadian
operations.  The potential impact on the refining margin of fluctuating exchange
rates together with U.S. dollar  denominated crude oil costs is mitigated by the
Company's pricing policies in the Northeast System,  which generally pass on any
change in the cost of crude oil.  Retail  margins,  on the other hand, have been
adversely affected by exchange rate fluctuations as competitive  pressures have,
from  time to time,  limited  the  Company's  ability  to  promptly  pass on the
increased  costs to the ultimate  consumer.  The Company has considered  various
strategies to manage  currency  risk,  and it hedges the Canadian  currency risk
when such hedging is considered economically appropriate.

Year 2000 Issue

State of Readiness
In 1997,  the  Company  commenced  efforts  to  address  Year  2000  issues  and
subsequently  formalized  an  enterprise-wide  effort to assess and  mitigate or
eliminate the business risk associated with Year 2000 issues, focusing on:

  - information technology (IT) computer hardware and software systems,

  - internal  process  control  equipment  outside  of  the  IT area used in the
    refining or retail operations, and

  - interfaces and support services from key suppliers, vendors and customers.

<PAGE>

A Company-wide  process is in place to inventory,  assess,  test,  remediate and
develop  contingency  plans for addressing the Year 2000 issues described above.
The process is ongoing and is periodically reassessed as new information becomes
known,  and the process is revised  accordingly.  The  Company has also  engaged
outside consultants to assist in addressing its Year 2000 issues.

The Company's Northeast IT systems are not Year 2000 compliant. As a result, the
Company is implementing a new stand-alone  enterprise-wide  IT system which will
bring the  Northeast  into  compliance  by the third  quarter of 1999.  This new
enterprise-wide  IT system will also be implemented in the US operations  during
the fourth quarter of 1999 because it offers superior technological enhancements
and operating  efficiencies not available in the existing US IT system. The cost
of the new  enterprise-wide IT system for the Northeast and US is expected to be
approximately  $48.0 million,  with most of the costs being  capitalized.  As of
March 31, 1999,  the Company has incurred  $13.2 million of costs related to the
new IT system.

The Company  believes it has identified most of the  significant  exposure items
associated with internal  process  control  equipment used at the refineries and
throughout  the  retail  operations,  and has  implemented  a plan to bring such
equipment into Year 2000 compliance.  The Company has also corresponded with its
key  suppliers,  vendors  and  customers  and has  developed  a plan to mitigate
potential exposure areas. The estimated cost to be incurred for the verification
and testing of the systems  implemented  in 1995 and the non-IT and  third-party
corrective action plans range from $28.2 million to $44.0 million,  with most of
the costs  being  capitalized.  The actual  costs  incurred  will  depend on the
alternative chosen for each corrective action.  Management  anticipates that all
corrective  actions will be  completed  by December  31, 1999 to ensure  minimal
disruption to operations as the new millennium begins.

Risks
Certain Year 2000 risk factors which could have a material adverse effect on the
Company's results of operations, liquidity, and financial condition include, but
are not limited to, failure to identify  critical systems which could experience
failures, errors in efforts to correct problems, unexpected or extended failures
by key suppliers,  vendors and customers, and failures in global banking systems
and commodity exchanges.

As a matter of operating policy, the Company routinely  analyzes  production and
automation systems for potential  failures,  such as interruptions in the supply
of raw materials or  utilities.  It is not  anticipated  that a problem in these
areas will have a significant impact on the Company's ability to continue normal
business activities.  In addition,  it is not expected that these failures would
impact  safety or the  environment  nor have a material  impact on production or
sales. Any problems in these systems can be dealt with using existing  operating
procedures.

The worst case scenario  would be that the  Company's  failure or the failure of
key suppliers,  vendors and customers to correct material Year 2000 issues could
result in serious disruptions in normal business activities and operations. Such
disruptions  could  prevent the Company from refining  crude oil and  delivering
refined  products to  customers.  While the Company does not expect a worst case
scenario,  if it were to occur and could not be  corrected  on a timely basis or
otherwise  mitigated  by  contingency  plans,  it could have a material  adverse
impact on the Company's results of operations, liquidity and financial position.

Contingency Plans
Based on the  current  assessments  and  analysis  of the  Company's  Year  2000
readiness and that of key suppliers,  vendors and customers,  Year 2000 specific
contingency  plans are being  developed for critical  business  operations.  The
Company's US IT systems were initially assessed as being fundamentally Year 2000
compliant  resulting  from the 1995  implementation  of a new IT system  and the
migration  in early 1998 of Total's  operations  to such new system at a cost of
$4.3 million. As a result of recent declarations by the vendor who developed the
system  implemented  in  1995,  the  Company  has  decided,  as a  part  of  its
contingency planning, to verify and test certain aspects of these systems during
1999 to mitigate as much as possible any material adverse impact which may arise
from  possible  Year 2000 issues.  Those  systems  would only be used in the new
millenium as a contingency in the event the new  enterprise-wide  IT systems are
not yet operating.

For the remainder of 1999, the Year 2000  contingency  plans will be adjusted or
new plans developed as circumstances  warrant. The Company's current and planned

<PAGE>

activities  with  respect to the Year 2000 issue are  expected to  significantly
reduce the Company's level of uncertainty  about the magnitude of the risk posed
by the Year 2000 issue and, in  particular,  about the Year 2000  compliance and
readiness of its key suppliers,  vendors,  and customers.  The Company  believes
that,  with the  implementation  of new IT systems and completion of the planned
activities as scheduled, the possibility of significant  interruptions of normal
operations should be reduced.

See "Certain Forward-Looking Statements."

Certain Forward-Looking Statements

This quarterly report on Form 10-Q contains certain "forward-looking" statements
as such term is defined in the U. S. Private Securities Litigation Reform Act of
1995 and information relating to the Company and its subsidiaries that are based
on the beliefs of  management  as well as  assumptions  made by and  information
currently  available  to  management.  When  used  in  this  report,  the  words
"anticipate," "believe," "estimate," "expect," and "intend" and words or phrases
of similar  expressions,  as they relate to the Company or its  subsidiaries  or
management,  identify  forward-looking  statements.  Such statements reflect the
current  views of  management  with respect to future  events and are subject to
certain  risks,  uncertainties  and  assumptions  relating to the operations and
results of operations,  including as a result of competitive factors and pricing
pressures,  shifts in market demand and general  economic  conditions  and other
factors.

Should one or more of these risks or  uncertainties  materialize,  or should any
underlying  assumptions  prove  incorrect,  actual  results or outcomes may vary
materially from those  described  herein as  anticipated,  believed,  estimated,
expected or intended.

Item 3.  Quantitative and Qualitative Disclosures About Market Risk

The Company is exposed to various  market risks,  including  changes in interest
rates, foreign currency rates and commodity prices related to crude oil, refined
products and natural gas. To manage or reduce  these market  risks,  the Company
uses interest rate swaps, foreign exchange contracts,  and commodity futures and
price swap  contracts.  The Company's  policy  governing the use of  derivatives
requires that every  derivative  relate to an underlying,  offsetting  position,
anticipated  transaction  or firm  commitment  and  prohibits  the use of highly
complex or leveraged  derivatives.  Beginning in 1999,  the Company  revised its
feedstock  procurement  program  to  allow  for  limited  discretionary  hedging
activities based on expectations of future market  conditions.  A summary of the
Company's  primary  market risk  exposures and its use of  derivative  financial
instruments is presented below.

Interest Rate Risk

The Company is subject to interest  rate risk on its  long-term  fixed  interest
rate debt.  Commercial  paper  borrowings and borrowings  under revolving credit
facilities  do not give rise to  significant  interest  rate risk because  these
borrowings have maturities of less than three months. The carrying amount of the
Company's  floating interest rate debt approximates fair value.  Generally,  the
fair market value of debt with a fixed  interest  rate will increase as interest
rates fall, and the fair market value will decrease as interest rates rise. This
exposure to interest rate risk is managed by obtaining  debt that has a floating
interest rate or using interest rate swaps to change fixed interest rate debt to
floating interest rate debt. Generally,  the Company maintains floating interest
rate debt of between 35% and 45% of total  debt.  Interest  rates have  remained
relatively  stable over the past year and the Company  anticipates such rates to
remain relatively stable over the next year.

The following table provides  information about the Company's long-term debt and
interest rate swaps,  both of which are sensitive to changes in interest  rates.
For long-term debt,  principal cash flows and related  weighted average interest
rates by expected  maturity  dates,  after  consideration  of  refinancing,  are

<PAGE>

presented.  For interest rate swaps,  the table  presents  notional  amounts and
weighted  average  interest  rates by  expected  (contractual)  maturity  dates.
Notional amounts are used to calculate the contractual  payments to be exchanged
under the contract. Weighted average floating rates are based on implied forward
rates in the yield curve at March 31, 1999.
<TABLE>
<CAPTION>
                                              Expected Maturity - Year Ending December 31,
                                 -------------------------------------------------------------------
                                                                                                          Fair Value
                                 1999      2000      2001      2002      2003      Thereafter  Total     March 31,1999
                                 ----      ----      ----      ----      ----      ----------  -----     -------------
                                                                  (in millions)
<S>                             <C>       <C>       <C>       <C>       <C>       <C>        <C>         <C>
Long-term Debt:
   Fixed rate.................. $ 3.6     $14.7     $86.5     $492.2    $35.0     $914.1     $1,546.1    $1,572.8
     Average interest rate......  8.6%      9.3%      9.6%       8.8%     8.9%       7.6%         8.1%        N/A
   Floating rate............... $   -     $   -     $   -     $220.9    $   -     $    -     $  220.9    $  220.9
     Average interest rate......    -%        -%        -%       5.1%       -%         -%         5.1%        N/A

Interest Rate Swaps:
   Fixed to floating........... $   -     $   -     $   -     $200.0    $   -     $250.0     $  450.0    $  450.0
     Average pay rate........... 4.88%     5.23%      5.57%      5.79%    5.85%      6.32%        5.90%       N/A
     Average receive rate....... 6.43%     6.43%      6.43%      6.43%    6.59%      6.85%        6.66%       N/A

</TABLE>

Foreign Currency Risk

The Company  periodically  enters into short-term  foreign exchange contracts to
manage its exposure to exchange rate  fluctuations  on the trade payables of its
Canadian  operations  that are  denominated  in U.S.  dollars.  These  contracts
involve the exchange of Canadian and U.S.  currency at future  dates.  Gains and
losses on these contracts  generally  offset losses and gains on the U.S. dollar
denominated  trade  payables.  At March 31,  1999,  the Company  had  short-term
foreign exchange  contracts  totaling $16.7 million.  The Company's  exposure to
market risk is minimal on these contracts as they matured on April 1, 1999.

The Company  generally  does not hedge for the effects of foreign  exchange rate
fluctuations  on the  translation  of  its  foreign  results  of  operations  or
financial position.

Commodity Price Risk

The  Company is subject to the market  risk  associated  with  changes in market
prices of its underlying crude oil,  refined products and natural gas;  however,
such changes in values are generally offset by changes in the sales price of the
Company's  refined  products.  Price swaps are price  hedges for which gains and
losses are recognized when the hedged  transactions occur;  however,  losses are
recognized when future prices are not expected to recover.

As of March 31, 1999, the Company had  outstanding  commodity  futures and price
swap  contracts to buy $586.0  million and sell $374.6  million of crude oil and
refined products or to settle differences between a fixed price and market price
on aggregate notional quantities of 6.4 million barrels of crude oil and refined
products  which mature on various  dates  through  June 2002.  The fair value of
commodity futures contracts is based on quoted market prices.  The fair value of
price swap  contracts is determined by comparing the contract price with current
published  quotes for  futures  contracts  corresponding  to the period that the
anticipated transactions are expected to occur.

<PAGE>

The information  below reflects the Company's price swaps and futures  contracts
that are sensitive to changes in crude oil or refined product  commodity prices.
The table  presents the notional  amounts in barrels for crude oil, the weighted
average  contract  prices and the total  contract  amount by  expected  maturity
dates.  Contract  amounts are used to  calculate  the  contractual  payments and
quantity of barrels of crude oil to be exchanged under the futures contract.

<TABLE>
<CAPTION>
                                                                                                              Weighted
                                                                      Fair                    Contract        Average
                                                       Carrying       Value     Contract      Volumes          Price
Year Ending December 31,                                Amount       Amount      Amount      In Barrels      Per Barrel
                                                       --------      ------     --------     ----------      ----------
                                                                 (in millions, except weighted average price)
<S>                                                     <C>          <C>         <C>             <C>          <C>
Crude Procurement:
Futures contracts - buy:
  1999............................................      $11.5        $16.9       $189.5          12.0         $15.80
  2000............................................        4.0          4.0         54.7           3.4          15.85

Futures contracts - sell:
  1999............................................      (18.4)       (43.0)       296.9          18.1          16.42

Price swaps:
  2002............................................       (9.1)       (13.4)       140.0           6.4          22.00

Discretionary:
Futures contracts - buy:
  1999............................................       35.5         35.5        201.9          12.5          16.18

Futures contracts - sell:
  1999............................................      (17.3)       (17.3)        77.7           4.9          15.75
</TABLE>
<PAGE>

PART II - OTHER INFORMATION

Item 1.  Legal Proceedings

         None.

Item 4.  Submission Of Matters To A Vote Of Security Holders

The Company's 1999 Annual Meeting of Stockholders was held on May 4, 1999 in San
Antonio,  Texas.  At  the  meeting,  the  Company's  stockholders  elected  four
directors  to  serve  three-year  terms  expiring  in  2002,  and  ratified  the
appointment of Arthur  Andersen LLP to serve as independent  accountants for the
Company and its subsidiaries for 1999.

The  following  tables  summarize  the  number  of votes  cast for,  against  or
withheld, and number of abstentions as to each matter:

                              Election of Directors

     Name                    Total Votes For             Total Votes Withheld

H. Frederick Christie          77,119,910                      275,158
W.H. Clark                     77,115,798                      279,270
Jean R. Gaulin                 77,115,014                      280,054
Bob Marbut                     77,124,873                      270,195


         Ratification of Arthur Andersen LLP as Independent Accountants

       For                       Against                         Abstain

    77,145,166                   57,336                          192,566

Item 6.  Exhibits and Reports on Form 8-K

(a) Exhibits

    10.1  Performance Support Agreement dated March  29, 1999 among the Company,
          Asset  Securitization  Cooperative  Corporation  (ASCC),  and Canadian
          Imperial Bank of Commerce (CIBC).

    10.2  Credit Card Receivables Purchase Agreement  dated March 29, 1999 among
          Coyote   funding,  L.L.C.  (Coyote),  Diamond  Shamrock  Refining  and
          Marketing Company (DSRMC), ASCC and CIBC.

    10.3  Trade  Receivables  Purchase  Agreement  dated  March  29, 1999  among
          Coyote, DSRMC, ASCC and CIBC.

    27.1  Financial Data Schedule

(b) Reports on Form 8-K

    None.

<PAGE>
                                    SIGNATURE

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

ULTRAMAR DIAMOND SHAMROCK CORPORATION


By:  /s/ H. Pete Smith
         H. PETE SMITH
         EXECUTIVE VICE PRESIDENT
         AND CHIEF FINANCIAL OFFICER
         May 13, 1999

                                                                 EXECUTION COPY


                          PERFORMANCE SUPPORT AGREEMENT

         THIS PERFORMANCE SUPPORT AGREEMENT ("Agreement") is executed as of this
29th day of March,  1999, by ULTRAMAR DIAMOND SHAMROCK  CORPORATION  ("UDS"),  a
Delaware corporation (the "Support Provider"),  in favor of ASSET SECURITIZATION
COOPERATIVE CORPORATION ("ASCC"), a California cooperative corporation, CANADIAN
IMPERIAL  BANK OF  COMMERCE  ("CIBC")  and any other  Person  which may become a
"Purchaser"  under and as defined in both the Credit Card  Receivables  Purchase
Agreement and Trade Receivables  Purchase Agreement  (referred to below) (each a
"Purchaser" and collectively, the "Purchasers") and CIBC, in its capacity as the
Administrative  Agent under both the Credit Card Receivables  Purchase Agreement
and the Trade Receivables Purchase Agreement (the "Administrative Agent").

                             PRELIMINARY STATEMENTS

         1. DSRM National Bank, a national banking association  ("DSRMNB"),  and
Diamond  Shamrock  Refining  and  Marketing  Company,  a  Delaware   corporation
("DSRM"),   have  executed  that  certain  Amended  and  Restated  Participation
Agreement  dated as of May 1,  1997 (as the same may be  amended,  supplemented,
restated or otherwise modified from time to time, the "Participation Agreement")
pursuant to which DSRM purchases 100% participation interests in all Receivables
under all Accounts established and maintained by DSRMNB.

         2. DSRMNB and DSRM have  executed  that  certain  Data  Processing  and
Service  Agreement  dated as of September  13, 1996 (as the same may be amended,
supplemented,  restated or otherwise  modified from time to time, the "Servicing
Agreement")  pursuant to which DSRM processes all Receivables under all Accounts
established and maintained by DSRMNB.

         3. TPI Petroleum, Inc., a Michigan corporation ("TPI"), Ultramar, Inc.,
a Nevada corporation ("Ultramar") and Diamond Shamrock Refining Company, L.P., a
Delaware limited partnership ("DSRLP"), as "Sellers", and DSRM, as "Buyer", have
executed that certain Transfer  Agreement of even date herewith (as the same may
be amended, supplemented,  restated or otherwise modified from time to time, the
"Transfer  Agreement")  pursuant  to which DSRM shall  acquire  the  Receivables
originated from time to time by TPI, Ultramar and DSRLP.

         4. DSRM, as "Seller",  and Coyote Funding,  L.L.C.,  a Delaware limited
liability  company ("Coyote  Funding"),  as "Buyer",  have executed that certain
Credit Card Receivables  Sale Agreement and that certain Trade  Receivables Sale
Agreement  both of even date herewith (as the same may be amended, supplemented,

<PAGE>

restated or otherwise  modified from time to time,  each a "Sale  Agreement" and
collectively,  the "Sale  Agreements")  pursuant to which Coyote  Funding  shall
purchase the Receivables  and  Receivables  Assets offered for sale from time to
time by DSRM.

         5. ASCC, the Purchaser,  the Administrative Agent, DSRM, as "Collection
Agent" and Coyote  Funding,  as  "Seller"  have  executed or will  execute  that
certain  Credit Card  Purchase  Agreement  and that  certain  Trade  Receivables
Purchase  Agreement  both of even  date  herewith  (as the same may be  amended,
supplemented, restated or otherwise modified from time to time, each a "Purchase
Agreements" and collectively,  the "Purchase Agreements") pursuant to which ASCC
may, and CIBC,  if so  requested,  will  purchase an  Ownership  Interest in the
Receivables  and the  Receivables  Assets  offered for sale from time to time by
Coyote Funding.

         6. DSRMNB has  executed  that certain  Security  Agreement of even date
herewith  (as the same  may be  amended,  supplemented,  restated  or  otherwise
modified  from time to time,  the  "Security  Agreement",  and together with the
Participation  Agreement,  the Servicing Agreement,  the Transfer Agreement, the
Sale  Agreements and the Purchase  Agreements,  collectively,  the  "Transaction
Documents")  in favor of CIBC,  as  Administrative  Agent  under the Credit Card
Receivables  Purchase  Agreement  pursuant  to  which  DSRMNB  has  granted  the
Administrative  Agent a security  interest in the Receivables under all Accounts
established and maintained by DSRMNB.

         7. Each of  DSRMNB,  DSRM,  TPI,  Ultramar,  DSRLP and  Coyote  Funding
(collectively,   the  "UDS   Transaction   Parties")   are  direct  or  indirect
wholly-owned subsidiaries of the Support Provider.

         8.  It  is a  condition  precedent  to  the  Initial  Purchase  by  the
Purchasers  under the Purchase  Agreements that the Support Provider execute and
deliver this Agreement to the Administrative Agent.

         In  consideration  of the  execution of the Purchase  Agreements by the
Purchasers,  and for other good and  valuable  consideration,  the  receipt  and
sufficiency of which is hereby acknowledged by the Support Provider, the Support
Provider agrees as follows:

                                    ARTICLE I
                                   DEFINITIONS

         SECTION 1. Definitions. Unless otherwise defined in this Agreement, all
defined  terms used in this  Agreement,  including  the  Preliminary  Statements
hereof,  shall  have  the  meanings  ascribed  to  such  terms  in the  Purchase
Agreements.

<PAGE>
                                   ARTICLE II
                         PERFORMANCE SUPPORT OBLIGATION

         Section 2.01.  Performance  Support  Obligation.  The Support  Provider
hereby  unconditionally  and  irrevocably  guarantees  for  the  benefit  of the
Purchasers and the Administrative Agent (collectively, the "Beneficiaries"), the
due and  punctual  performance,  observance  and payment by the UDS  Transaction
Parties  and  their  respective  successors  and  assigns  of all of the  terms,
covenants, conditions,  agreements,  undertakings and obligations on the part of
the UDS  Transaction  Parties  to be  paid,  performed  or  observed  under  the
Transaction  Documents or any document  executed by each  Transaction  Party and
delivered in connection  with the Purchase  Agreements  in  accordance  with the
terms thereof,  including,  without limitation, any agreement of any Transaction
Party to pay any money under either of the Purchase Agreements or any such other
document (all of the foregoing,  the "Obligations").  Should the UDS Transaction
Parties fail to perform any  Obligation,  then the Support  Provider will itself
duly and punctually perform, observe and pay, or cause to be duly and punctually
performed,  observed or paid such Obligation, and it shall not be a condition to
the accrual of the  obligation  of the Support  Provider  hereunder  to perform,
observe or pay any Obligation (or to cause the same to be performed, observed or
paid) that any  Purchaser,  the  Administrative  Agent or any other Person shall
have first made any request of or demand upon or given any notice to the Support
Provider or to any Transaction Party or their respective  successors and assigns
or have initiated any action or proceeding  against the Support  Provider or any
Transaction  Party or any of their respec tive successors and assigns in respect
thereof.  Any Purchaser and the Administrative  Agent may proceed to enforce the
obligations  of the Support  Provider  under this  Section  2.01  without  first
pursuing  or  exhausting  any  right  or  remedy  which  such  Purchaser  or the
Administrative  Agent may have against any Transaction  Party, any other Person,
the Receivables, the Receivables Assets or any other property.

                                   ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

         Section 3.01.  Representations  and Warranties of the Support Provider.
The Support  Provider  hereby  represents and warrants to the Purchasers and the
Administrative Agent on the date hereof and on the date of each purchase,  sale,
assignment,   transfer  or  other  transaction  under  any  of  the  Transaction
Documents:

         (i)    Support  Provider  is  a  corporation  duly  organized,  validly
                existing  and  in  good  standing under the laws of the State of
                Delaware  and  is  duly  qualified  to do  business, and in good
                standing, in every jurisdiction where the nature of its business
                requires it to be so qualified unless Failure to be so qualified
                and in good standing  would not  materially adversely affect its
                ability to perform its obligations hereunder.
<PAGE>

         (ii)   The execution, delivery and  performance by the Support Provider
                of this Agreement and the  other instruments and documents to be
                delivered hereunder, and  the transactions  contemplated hereby,
                are within the  Support  Provider's corporate  powers, have been
                duly  authorized by  all  necessary  corporate  action,  do  not
                contravene  (A) the  Support Provider's  charter or by-laws, (B)
                any  law, rule or regulation applicable to the Support Provider,
                (C) any  contractual  restriction of a material nature Contained
                in  any  indenture,  loan or  credit agreement, lease, mortgage,
                security  agreement, bond, note or other agreement or instrument
                binding  on  the  Support  Provider  or  its property or (D) any
                order,  writ,  judgment, award, injunction  or decree binding on
                the  Support Provider or its property, which, in the case of any
                of the  foregoing would materially  adversely affect its ability
                to  perform its obligations  hereunder, and do  not result in or
                require the  creation of any lien,  claim or encumbrance upon or
                with respect to any of its properties.

         (iii)  This Agreement has been duly executed and delivered on behalf of
                the Support  Provider and is the legal, valid and binding agree-
                ment of  the  Support  Provider  enforceable against the Support
                Provider  in  accordance  with  its terms,  except as limited by
                applicable  bankruptcy,  reorganization,  insolvency  or similar
                laws  affecting  the enforcement of  creditors' rights generally
                and by general principles of equity.

         (iv)   No authorization or  approval or  other action by, and no notice
                to or filing with, any governmental authority or regulatory body
                is required for the due execution,  delivery and  performance by
                the Support  Provider of this Agreement or any other document or
                instrument to be delivered herewith.

         (v)    There are no actions,  suits, or proceedings  pending or, to the
                knowledge  of  the  Support  Provider,  threatened  against  the
                Support  Provider  or  affecting  the  property  of  the Support
                Provider or any of its  subsidiaries in any court, or before any
                arbitrator  of  any  kind,  or  before  or  by  any governmental
                authority,  which  would materially adversely affect its ability
                to  perform  its  obligations  hereunder.   Neither  the Support
                Provider nor  any of its subsidiaries is in default with respect
                to  any  order  of any court, arbitrator  or  governmental body,
                which, in  the  case of  any of  the foregoing would  materially

<PAGE>

                adversely  affect  its  ability  to   perform   its  obligations
                hereunder,  and do not  result in or require the creation of any
                lien,  claim or  encumbrance  upon or with respect to any of its
                properties.

         (vi)   The  consolidated balance  sheet of the Support Provider and its
                consolidated  subsidiaries  as  of  December  31,  1998, and the
                related  consolidated statements of income and retained earnings
                of the Support  Provider  and its consolidated  subsidiaries for
                the fiscal year then ended, are in each case certified by Arthur
                Andersen  LLP,  independent  public  accountants (and  copies of
                which have been  furnished to the Administrative Agent) and such
                statements are  accompanied by an opinion of Arthur Andersen LLP
                stating  that such  statements fairly  present the  consolidated
                financial condition of the Support Provider and its consolidated
                subsidiaries  for  the   period  ended  on  such  date,  all  in
                accordance   with   generally   accepted  accounting  principles
                consistently applied.

                                   ARTICLE IV
                                    COVENANTS

         Section 4.01. Reporting  Covenants.  The Support Provider covenants and
agrees that,  until this  Agreement is terminated  pursuant to Section 5.07, the
Support Provider will deliver to the Administrative Agent:

         (a)  as soon as available and in any event within 60 days after the end
of each of the first three quarters of each fiscal year of the Support Provider,
a consolidated income statement and a statement of changes in financial position
of the Support Provider and its consolidated  subsidiaries for such period,  and
consolidated  statements of income and retained earnings of the Support Provider
and its consolidated  subsidiaries  each for the period commencing at the end of
the previous  fiscal year and ending with the end of such quarter,  certified by
the chief financial officer or chief accounting  officer of the Support Provider
to be  prepared  to the best of his  knowledge  and  belief in  accordance  with
generally  accepted  accounting  principles subject to audit and normal year-end
adjustments;

         (b)  as soon as available and in any event within 120 days after the
end of each  fiscal  year of the Support  Provider,  a copy of the  consolidated
balance sheets of the Support Provider and its  consolidated  subsidiaries as of
the end of such year and the  related  consolidated  statements  of  income  and
retained earnings of the Support Provider and its consolidated  subsidiaries for
such year each reported on by nationally recognized public accountants;

<PAGE>

         (c)  upon request by the  Administrative Agent,  copies of  all reports
and  registration  statements,  if  any,  which  the  Support  Provider  or  any
subsidiary  files with the  Securities  and Exchange  Commission or any national
securities exchange; and

         (d)  promptly from time to time furnish the  Administrative  Agent such
information,  documents,  records or reports respecting the financial conditions
and  operations  of  the  Support  Provider  as  the  Administrative  Agent  may
reasonably from time to time request.

         Section  4.02.  Stock  Ownership and Merger  Restrictions.  The Support
Provider covenants and agrees that, until this Agreement is terminated  pursuant
to Section  5.07,  each of the UDS  Transaction  Parties  will at all times be a
wholly-owned direct or indirect subsidiary of the Support Provider.

                                    ARTICLE V
                                  MISCELLANEOUS

         Section 5.01. Validity of Obligations. The Support Provider agrees that
its obligations under this Agreement shall be unconditional, irrespective of (i)
the  validity,   enforceability,   avoidance,   subordination,   discharge,   or
disaffirmance  by  any  Person  (including  a  trustee  in  bankruptcy)  of  the
Obligations, (ii) the absence of any attempt to collect any Collections from the
Obligor related thereto,  or to collect the Obligations from the UDS Transaction
Parties or any other Person, (iii) the waiver, consent,  extension,  forbearance
or granting of any indulgence by any Purchaser,  the Administrative Agent or any
other Person with  respect to any  provision of any  instrument  evidencing  the
Obligations,  (iv) any change of the time, manner or place of performance of, or
in any other term of any of the Obligations,  including without limitation,  any
amendment  to  or  modification  of  any  Transaction  Document,  (v)  any  law,
regulation  or  order  of any  jurisdiction  affecting  any  term  of any of the
Obligations, or rights of any of the Purchasers, the Administrative Agent or any
other Person with respect  thereto,  (vi) the failure by any of the  Purchasers,
the  Administrative  Agent or any other  Person to take any steps to perfect and
maintain perfected its respective  interest in any Receivable or any Receivables
Assets or other  property  acquired  by it  pursuant  to any of the  Transaction
Documents or in any security or collateral  related to the Obligations (vii) any
exchange  or  release  of any  Receivable  or any  Receivables  Assets  or other
property acquired by any Purchaser, the Administrative Agent or any other Person
pursuant to any of the Transaction  Documents,  (viii) any failure to obtain any
authorization or approval from or other action by or to notify or file with, any
governmental  authority  or  regulatory  body  required in  connection  with the
performance  of the  obligations  hereunder by the Support  Provider or (ix) any
impossibility or impracticability of performance, illegality, force majeure, any
act of  government,  or other  circumstances  which might  constitute  a default
available  to,  or  a discharge of the  UDS  Transaction  Parties or the Support

<PAGE>

Provider,  or any other  circumstance,  event or  happening  whatsoever  whether
foreseen or unforeseen and whether similar to or dissimilar to anything referred
to above. The Support  Provider  further agrees that its obligations  under this
Agreement shall not be limited to any valuation, estimation or disallowance made
in connection with any proceedings  involving any of the UDS Transaction Parties
filed  under  the  Bankruptcy  Code,  whether  pursuant  to  Section  502 of the
Bankruptcy  Code or any other  Section  thereof.  The Support  Provider  further
agrees that none of the Purchasers, the Administrative Agent or any other Person
under any of the Transaction Documents shall be under any obligation to marshall
any  assets  in  favor  of or  against  or in  payment  of  any  or  all  of the
Obligations.  The Support  Provider  further agrees that, to the extent that any
Transaction  Party  makes a payment or payments  to any of the  Purchasers,  the
Administrative Agent or any other Person under any of the Transaction Documents,
which  payment or payments (or any part thereof) are  subsequently  invalidated,
declared to be  fraudulent  or  preferential,  set aside  and/or  required to be
repaid to such Transaction  Party, its estate,  trustee or receiver or any other
party, including, without limitation, the Support Provider, under any bankruptcy
law, state or federal law, common law or equitable cause,  then to the extent of
such payment or repayment,  the  Obligation or part thereof which had been paid,
reduced or satisfied by such amount shall be  reinstated  and  continued in full
force and effect as of the date such initial payment,  reduction or satisfaction
occurred.  The Support  Provider waives all set-offs and  counterclaims  and all
presentments,  demands for  performance,  notices of  nonperformance,  protests,
notices of  protest,  notices of  dishonor  and  notices of  acceptance  of this
Agreement.  The Support Provider's obligations under this Agreement shall not be
limited  if any  Purchaser,  the  Administrative  Agent or any  other  Person is
precluded for any reason (including without  limitation,  the application of the
automatic  stay under  Section 362 of the  Bankruptcy  Code) from  enforcing  or
exercising any right or remedy with respect to the Obligations,  and the Support
Provider shall pay to such  Purchaser,  the  Administrative  Agent or such other
Person,  as applicable,  upon demand,  the amount of the Obligations  that would
otherwise  have been due and payable had such rights and remedies been permitted
to be exercised.

         Section 5.02.  Irrevocability.   The Support  Provider  agrees that its
obligations  under this Agreement shall be irrevocable.  In the event that under
applicable law  (notwithstanding  the Support Provider's agreement regarding the
irrevocable  nature of its obligations  hereunder),  the Support  Provider shall
have the right to revoke this  Agreement,  this Agreement shall continue in full
force  and  effect  until a written  revocation  hereof  specifically  referring
hereto,   signed  by  the  Support   Provider   is  actually   received  by  the
Administrative Agent at the Administrative  Agent's address at Canadian Imperial
Bank of Commerce,  New York Branch,  Attention:  Asset Securitization Group, 425
Lexington Avenue,  New York,  NY 10017.  Any such revocation  shall  not  affect

<PAGE>

the right of any of the Purchasers or the Administrative  Agent to enforce their
respective  rights  under this  Agreement  with  respect  to (i) any  Obligation
(including  any  Obligation  that is contingent or unmatured)  which arose on or
prior  to  the  date  the   aforementioned   revocation   was  received  by  the
Administrative  Agent or (ii) any  Obligation  which in any way  relates  to any
Receivable or any Receivables  Assets  existing or otherwise  outstanding on the
date the aforementioned  revocation was received by the Administrative Agent. If
any of the  Purchasers  make  Purchases or take other action in reliance on this
Agreement  after any such  revocation  by the Support  Provider but prior to the
receipt by the  Administrative  Agent of said written notice,  the rights of the
Purchasers and the  Administrative  Agent with respect thereto shall be the same
as if such  revocation had not occurred.  Without  limiting the foregoing,  this
Agreement may not be revoked at any time on or after the  occurrence of an Event
of Liquidation under either of the Purchase Agreements.

         Section 5.03.  Waiver.  The Support Provider hereby waives  promptness,
diligence,  notice of  acceptance,  notice  of  default  by the UDS  Transaction
Parties,  notice of the  incurrence of any  Obligation and any other notice with
respect to any of the Obligations and this Agreement, the Transaction Documents,
and any other document  related thereto and any requirement that the Purchasers,
the  Administrative  Agent or any  other  Person  exhaust  any right or take any
action against the UDS  Transaction  Parties,  any other Person or any property.
The Support  Provider  warrants to the Purchasers and the  Administrative  Agent
that it has  adequate  means to obtain  from the UDS  Transaction  Parties  on a
continuing basis, all information  concerning the financial condition of the UDS
Transaction  Parties and the  collectibility  of the Receivables and Receivables
Assets, and that it is not relying on the Purchasers or the Administrative Agent
to provide such information either now or in the future.

         Section 5.04.  Subrogation.  The Support  Provider will not exercise or
assert  any  rights  which  it may  acquire  by way of  subrogation  under  this
Agreement  unless  and until  all of the  Obligations  shall  have been paid and
performed in full and the Aggregate  Ownership Interest is reduced to zero under
each Purchase Agreement. If any payment shall be made to the Support Provider on
account of any  subrogation  rights at any time prior to the  occurrence  of the
events described in the preceding  sentence,  each and every amount so paid will
be held in trust for the benefit of the Purchasers, the Administrative Agent and
any other applicable payee under any of the Transaction  Documents and forthwith
be paid to the Administrative Agent or such payee, as applicable, to be credited
and applied to the Obligations.

         Section 5.05.  Costs and Expenses.  The Support Provider  shall pay, on
demand, all reasonable costs and expenses  including,  without  limitation,  all
court costs and reasonable  attorneys' fees and expenses paid or incurred by any
of the  Purchasers  or the  Administrative  Agent  in  connection  with  (a) the
collection  of all or  any  part  of the  obligations  of the  Support  Provider
hereunder, (b) the enforcement of any term or provision of this Agreement or (c)
the  prosecution or defense of any action by or against any of the Purchasers or
the  Administrative  Agent (without limiting clause (a) or (b) above,  excluding
any such action brought by the UDS Transaction  Parties or the Support  Provider
or by  any  of the  Purchasers  or the  Administrative  Agent  against  the  UDS
Transaction  Parties or the Support Provider) in connection with this Agreement,
whether involving the UDS Transaction Parties, the Support Provider or any other
Person,  including a trustee in bankruptcy,  (excluding  however any such action
that results from the gross negligence or willful misconduct of any Purchaser or
the  Administrative  Agent).  The  Support  Provider  shall pay  interest on all
amounts owing by it under this Agreement from the date due and payable hereunder
until such  obligations  are paid in full,  at the per annum rate of 2% plus the
Base Rate.

         Section  5.06.  Successors.  This  Agreement  shall be binding upon the
Support Provider and upon the successors and assigns of the Support Provider and
shall inure to the benefit of the  successors  and assigns of the Purchasers and
the  Administrative  Agent; all references herein to the Support Provider and to
the UDS  Transaction  Parties  shall  be  deemed  to  include  their  respective
successors  and  assigns.  The  successors  and  assigns of the UDS  Transaction
Parties   shall   include,   without   limitation,   a   receiver,   trustee  or
debtor-in-possession  of or for the UDS Transaction  Parties.  All references to
the  singular  shall be deemed to  include  the  plural  where  the  context  so
requires.

         Section 5.07.  Termination.  This Agreement  shall  terminate after the
latest to occur of (a) the date on which  all the  Obligations  are paid  and/or
performed in full, (b) the date the Aggregate  Ownership  Interest is reduced to
zero  under  both of the  Purchase  Agreements,  and (c) the date on  which  the
Support Provider has satisfied in full its obligations hereunder.

         Section 5.08. Integration;  Conditions. This Agreement contains a final
and complete  integration  of all prior  expressions  of the parties hereto with
respect to the  subject  matter  hereof,  superseding  all prior oral or written
understandings.  No course of dealing,  course of performance or trade usage and
no parol  evidence  shall be used to supplement or modify any term hereof.  This
Agreement  is  fully  effective  on the  date of its  execution  by the  Support
Provider.

         Section 5.09.  Governing Law and Consent to Jurisdiction Waiver of Jury
Trial.  (a) THIS  AGREEMENT  SHALL BE GOVERNED BY, AND CONSTRUED AND ENFORCED IN
ACCORDANCE  WITH,  THE  LAWS  OF THE  STATE  OF  NEW  YORK  (INCLUDING,  WITHOUT
LIMITATION,  SECTION  5-1401  OF THE  GENERAL  OBLIGATIONS  LAW OF NEW  YORK BUT
OTHERWISE WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES).

         (b)  THE PARTIES HERETO  HEREBY IRREVOCABLY  SUBMIT TO THE JURISDICTION
OF THE UNITED STATES  DISTRICT  COURT FOR THE SOUTHERN  DISTRICT OF NEW YORK AND
ANY COURT IN THE STATE OF NEW YORK  LOCATED  IN THE CITY AND COUNTY OF NEW YORK,
AND ANY  APPELLATE  COURT FROM ANY THEREOF,  IN ANY ACTION,  SUIT OR  PROCEEDING
BROUGHT AGAINST IT AND TO OR IN CONNECTION WITH ANY OF THE RELATED  DOCUMENTS OR
THE  TRANSACTIONS  CONTEMPLATED  THEREUNDER OR FOR RECOGNITION OR ENFORCEMENT OF
ANY JUDGMENT,  AND THE PARTIES  HERETO HEREBY  IRREVOCABLY  AND  UNCONDITIONALLY
AGREE THAT ALL CLAIMS IN RESPECT OF ANY SUCH ACTION OR  PROCEEDING  MAY BE HEARD
OR DETERMINED  IN SUCH NEW YORK STATE COURT OR, TO THE EXTENT  PERMITTED BY LAW,
IN SUCH FEDERAL  COURT.  THE PARTIES  HERETO AGREE THAT A FINAL  JUDGMENT IN ANY
SUCH ACTION, SUIT OR PROCEEDING SHALL BE CONCLUSIVE AND MAY BE ENFORCED IN OTHER
JURISDICTIONS  BY SUIT ON THE JUDGMENT,  OR IN ANY OTHER MANNER PROVIDED BY LAW.
TO THE EXTENT  PERMITTED BY APPLICABLE  LAW, THE PARTIES HERETO HEREBY WAIVE AND
AGREE NOT TO ASSERT BY WAY OF  MOTION,  AS A DEFENSE  OR  OTHERWISE  IN ANY SUCH
SUIT, ACTION OR PROCEEDING,  ANY CLAIM THAT IT IS NOT PERSONALLY  SUBJECT TO THE
JURISDICTION OF SUCH COURTS,  THAT THE SUIT,  ACTION OR PROCEEDING IS BROUGHT IN
AN  INCONVENIENT  FORUM,  THAT THE VENUE OF THE SUIT,  ACTION OR  PROCEEDING  IS
IMPROPER OR THAT THE RELATED  DOCUMENTS OR THE SUBJECT MATTER THEREOF MAY NOT BE
LITIGATED IN OR BY SUCH COURTS.  EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST
EXTENT  PERMITTED  BY LAW,  ANY  RIGHT  TO A TRIAL  BY  JURY IN  RESPECT  OF ANY
LITIGATION  ARISING  DIRECTLY OR INDIRECTLY OUT OF, UNDER OR IN CONNECTION  WITH
THIS AGREEMENT OR ANY OF THE  TRANSACTIONS  CONTEMPLATED  HEREUNDER.  EACH PARTY
HERETO (A)  CERTIFIES  THAT NO  REPRESENTATIVE,  AGENT OR  ATTORNEY OF ANY PARTY
HERETO HAS REPRESENTED,  EXPRESSLY OR OTHERWISE, THAT IT WOULD NOT, IN THE EVENT
OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT
HAS  BEEN  INDUCED  TO ENTER  INTO  THIS  AGREEMENT  AND THE  OTHER  TRANSACTION
DOCUMENTS TO WHICH IT IS A PARTY, BY AMONG OTHER THINGS, THIS WAIVER.

         Section 5.10.  Counterparts.  This  Agreement may be executed in two or
more counterparts (and by different parties on separate  counterparts),  each of
which shall be an original,  but all of which together shall  constitute one and
the same instrument.

         IN  WITNESS  WHEREOF,  this  Agreement  has been duly  executed  by the
Support Provider this 29th day of March, 1999.

                                   ULTRAMAR DIAMOND SHAMROCK CORPORATION


                                   By:   /s/ Steve Blank
                                      Name:  Steve Blank
                                      Title: Vice President and Treasurer

                                   Address:   6000 North Loop West 1604
                                              San Antonio, TX 78249-1112
                                              Attention:  Treasurer

Acknowledged and accepted this
29th day of March, 1999.

CANADIAN IMPERIAL BANK OF
  COMMERCE, NEW YORK BRANCH,
as Administrative Agent on behalf
of the Purchasers under each
Purchase Agreement


By:    /s/ John Gevlin
   Name:   John Gevlin
   Title:  Authorized Signatory

                                                                EXECUTION COPY

                   CREDIT CARD RECEIVABLES PURCHASE AGREEMENT

                                      among

                             COYOTE FUNDING, L.L.C.

                                   as Seller,

                DIAMOND SHAMROCK REFINING AND MARKETING COMPANY,

                              as Collection Agent,

                  ASSET SECURITIZATION COOPERATIVE CORPORATION

                            as the Conduit Purchaser,

                       CANADIAN IMPERIAL BANK OF COMMERCE

                           as the Back-Stop Purchaser,

                                       and

                       CANADIAN IMPERIAL BANK OF COMMERCE
                             as Administrative Agent

                           Dated as of March 29, 1999

<PAGE>

                                TABLE OF CONTENTS

                                                                            Page

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

ARTICLE II:  PURCHASE FACILITY................................................12
  SECTION 2.1.  Purchase Facility.............................................12
  SECTION 2.2.  Extension or Acceleration of the Termination Date.............13

ARTICLE III:  SALE OF OWNERSHIP INTEREST......................................13
  SECTION 3.1.  Determination of Ownership Interest...........................13
  SECTION 3.2.  Frequency of Determining Aggregate Ownership Interest.........15
  SECTION 3.3.  Maximum Ownership Interest....................................15
  SECTION 3.4.  Blocked Accounts and Collections..............................15

ARTICLE IV:  PURCHASE PRICE...................................................16
  SECTION 4.1.  Determination of Cash Component of Purchase Price.............16
  SECTION 4.2.  Determination of Deferred Payment Component of Purchase 
                Price.........................................................16

ARTICLE V:  FEES AND EXPENSES.................................................17
  SECTION 5.1.  Settlement Date Payments......................................17
    SECTION 5.1.1.  Purchase Discount.........................................17
    SECTION 5.1.2.  Purchase Premium..........................................17
    SECTION 5.1.3.  Operating Expense Fee.....................................18
    SECTION 5.1.4.  Collection Agent Fee......................................18
    SECTION 5.1.5.  Unused Facility Fee.......................................18
    SECTION 5.1.6.  Administration Fee........................................18
  SECTION 5.2.  Structuring Fee...............................................18
  SECTION 5.3.  Legal Fees and Expenses.......................................18
  SECTION 5.4.  Interest on Unpaid Amounts....................................19
  SECTION 5.5.  Audits........................................................19

ARTICLE VI:  PURCHASE PROCEDURES..............................................19
  SECTION 6.1.  Types of Purchases............................................19
  SECTION 6.2.  Notice Requirements...........................................19
  SECTION 6.3.  Conditions Precedent to Initial Purchase......................20
    SECTION 6.3.1.  Membership in the Purchaser...............................20
    SECTION 6.3.2.  Fees......................................................20
    SECTION 6.3.3.  Absence of Liens..........................................20
    SECTION 6.3.4.  Financing Statements......................................20
    SECTION 6.3.5.  Credit Card Receivables Sale Agreement, Etc...............21
    SECTION 6.3.6.  Receivables Activity Report...............................21

<PAGE>

    SECTION 6.3.7.  Resolutions...............................................21
    SECTION 6.3.8.  Legal Opinion of Seller's, DSRM's, DSRMNB's and the
                    Parents's Counsel.........................................21
    SECTION 6.3.9.  Good Standing Certificates................................21
    SECTION 6.3.10.  Performance Support Agreement............................21
    SECTION 6.3.11.  Blocked Account Agreements...............................21
  SECTION 6.4.  Condition Precedent to All Incremental Purchases..............22
  SECTION 6.5.  Conditions Precedent to All Purchases.........................22
    SECTION 6.5.1.  Representations and Covenants.............................22
    SECTION 6.5.2.  Other Documents...........................................22

ARTICLE VII:  SETTLEMENT PROCEDURES...........................................22
  SECTION 7.1.  Settlement Date...............................................22
  SECTION 7.2.  Application of Collections....................................22
    SECTION 7.2.1.  Application of Collections on Days That Are Not
                    Settlement Dates..........................................22
    SECTION 7.2.2.  Application of Collections on Settlement Dates............23
  SECTION 7.3.  Adjustments, Etc..............................................24
  SECTION 7.4.  Receivables Activity Report...................................25

ARTICLE VIII:  ADMINISTRATIVE AGENT AND COLLECTION AGENT......................25
  SECTION 8.1.  Appointment of Administrative Agent...........................25
    SECTION 8.1.1.  Replacement of Administrative Agent.......................25
  SECTION 8.2.  Appointment of Collection Agent...............................25
    SECTION 8.2.1.  Replacement of Collection Agent; Notification of 
                    Obligors..................................................26

ARTICLE IX:  REPRESENTATIONS AND WARRANTIES...................................27
 SECTION 9.1  Representations and Warranties of the Seller and the 
              Collection Agent................................................27

ARTICLE X:  COVENANTS.........................................................29
  SECTION 10.1.  Affirmative Covenants of the Seller and the Collection 
                 Agent........................................................29
  SECTION 10.2.  Reporting Requirements of the Seller.........................32
  SECTION 10.3.  Negative Covenants of the Seller and the Collection Agent....33

ARTICLE XI:  INDEMNIFICATIONS; INCREASED COSTS; TAX MATTERS...................35
  SECTION 11.1.  Indemnification by Seller of Purchasers, etc.................35
  SECTION 11.2.  Indemnification Due to Failure to Consummate Purchase........36
  SECTION 11.3.  Increased Costs..............................................36
  SECTION 11.4.  Increased Capital............................................37
  SECTION 11.5.  Taxes........................................................37
  SECTION 11.6.  Notices......................................................38

<PAGE>

ARTICLE XII:  MISCELLANEOUS...................................................39
  SECTION 12.1.  Amendments, Etc..............................................39
  SECTION 12.2.  Notices, Etc.................................................39
  SECTION 12.3.  [Reserved]...................................................39
  SECTION 12.4.  No Waiver; Remedies..........................................39
  SECTION 12.5.  Binding Effect; Assignability................................39
  SECTION 12.6.  GOVERNING LAW................................................40
  SECTION 12.7.  Construction of the Agreement................................40
  SECTION 12.8.  No Proceedings...............................................40
  SECTION 12.9.  Confidentiality..............................................41
  SECTION 12.10.  Execution in Counterparts...................................41
  SECTION 12.11.  Severability Clause.........................................41
  SECTION 12.12.  SUBMISSION TO JURISDICTION; APPOINTMENT OF AGENT TO 
                  ACCEPT SERVICE OF PROCESS...................................41
<PAGE>

                                    EXHIBITS

Exhibit A      Form of Notice for Initial and Incremental Purchases

Exhibit B-1    Form of Notice of Election Not to Make Reinvestment Purchase

Exhibit B-2    Form of Notice of Election to Suspend Purchases and of Payment of
               Reduction in Investment

Exhibit C      Form of Membership Agreement

Exhibit D      Form of Blocked Account Agreement

Exhibit E      Form of Receivables Activity Report

Exhibit F      Forms of Cardholder Agreements


                                    SCHEDULES

Schedule A     Credit and Collection Policies

Schedule B     List of Blocked Account Banks

Schedule C     List of Addresses for the Seller, DSRM and DSRMNB

<PAGE>

         This CREDIT CARD RECEIVABLES  PURCHASE  AGREEMENT (this "Agreement") is
entered  into as of March 29,  1999,  by and among  COYOTE  FUNDING,  L.L.C.,  a
Delaware limited liability company, as the Seller, DIAMOND SHAMROCK REFINING AND
MARKETING  COMPANY,  as the Collection Agent, ASSET  SECURITIZATION  COOPERATIVE
CORPORATION,  as a Purchaser,  and  CANADIAN  IMPERIAL  BANK OF  COMMERCE,  as a
Purchaser and as the Administrative Agent.

                             ARTICLE I: DEFINITIONS

         As used in this Agreement, the following terms shall have the specified
meanings and shall  include in the singular  number the plural and in the plural
number the singular:

         "Account"  means a credit card account  established  and  maintained by
DSRMNB in and pursuant to a Cardholder  Agreement  between DSRMNB and an Obligor
or Obligors or by DSRM in and  pursuant to a Cardholder  Agreement  between DSRM
and an Obligor or Obligors.

         "Acquired Account" means any Account acquired by DSRMNB or DSRM (or any
of their successors) following the date hereof which arose from or in connection
with the business of any Person that is not a subsidiary of the Parent as of the
date hereof.

         "Administration  Fee" means the  percentage  used to determine  the fee
payable by the Seller to the Back-Stop Purchaser, as described in Section 5.1.5.

         "Administrative Agent" means Canadian Imperial Bank of Commerce and any
replacement thereof under Section 8.1.1.

         "Affected Party" has the meaning specified in Section 11.4.

         "Affiliate"  means, as to any Person, any other Person that directly or
indirectly,  is in control of, is controlled by or is under common  control with
such Person or is a director or officer of such Person.

         "Aggregate  Ownership  Interest"  means  at  any  time,  the  Ownership
Interests of all Purchasers at such time.

         "Agreement" means this Credit Card Receivables  Purchase Agreement,  as
it may be amended,  restated,  supplemented  or otherwise  modified from time to
time.

         "Alternative Rate" for any Settlement Period means an interest rate per
annum  equal to the sum of (a)  the LIBO Rate (Reserve Adjusted) plus (b) 0.50%;
provided, however, that (i) in  the case  of any Settlement  Period of less than
one month, the  LIBO Rate  (Reserve Adjusted) under  clause (a)  above  shall be
calculated as if such  Settlement Period has a duration of one  month unless the
Administrative  Agent and the Collection  Agent agree in writing  to a different
rate; (ii)  if it  shall become unlawful for CIBC to obtain funds in  the London
interbank market  in order  to make, fund or maintain  any Purchase hereunder or
deposits in dollars (in the applicable amounts) are not being offered by CIBC in
the London  interbank market then  the "Alternative  Rate"  for  any  Settlement
Period shall be calculated using an interest rate per  annum equal  to  the Base
Rate;  and  (iii) following the  occurrence of  an  Event  of  Liquidation,  the
"Alternative Rate"  for each  Payment Period shall  be the sum of the applicable
interest rate per  annum determined  pursuant to provisions set forth above plus
2.0% per annum.

         "Back-Stop Purchaser" means CIBC and its successors and assigns.

         "Base Rate"  means,  on any date,  a  fluctuating  rate of interest per
annum equal to the higher of (a) the Prime Rate and (b) the  Federal  Funds Rate
plus 1.0%.

         "Blocked Account" means any blocked account  established in the name of
the Seller to which the Collection Agent shall deposit Collections in accordance
with the terms of this Agreement.

         "Blocked Account  Agreement" means the agreement in the form of Exhibit
D  hereto  executed  among  the  Seller,  DSRM,  DSRMNB  (with  respect  to  the
Participation Interest), the Administrative Agent and a Blocked Account Bank.

         "Blocked Account Bank" means any bank listed on Schedule B.

         "Business  Day" means a day other  than a  Saturday  or Sunday on which
each of the Conduit  Purchaser,  the  Back-stop  Purchaser,  the  Administrative
Agent, the Collection Agent and the Seller is open for business.

         "Cardholder  Agreement"  means the agreement (and related  application)
for a credit card account between any Obligor or Obligors and DSRMNB or DSRM, as
applicable,  in  substantially  the form of one of the forms attached  hereto as
Exhibit F as each agreement may be amended,  modified or otherwise  changed from
time to time in accordance with the Credit and Collection Policies.

         "Charge-off" means any Receivable:

         (1)  all or any portion of which remains unpaid more than 180 days past
              the date on which it was due; or

         (2)  that has  been or  should  have  been  charged-off  in  conformity
              with the then current Credit and Collection Policies.

         "Charge-off Ratio" means, as of any date of determination,  a fraction,
expressed as a percentage,  the numerator of which is the aggregate  outstanding
balance  of all  Receivables  that  became  Charge-offs  during  the month  most
recently  ended,  and the  denominator  of  which is the  aggregate  outstanding
balance of all  Receivables  on the last Business Day of the month most recently
ended.

<PAGE>

         "CIBC" means Canadian Imperial Bank of Commerce.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Collection"  means any amount  paid by an  Obligor or any other  party
with respect to a  Receivable  or other form of payment in  accordance  with the
Cardholder Agreement in effect from time to time.

         "Collection  Agent" means DSRM or any replacement thereof under Section
8.2.1.

         "Collection  Agent Fee" means the percentage  used to determine the fee
payable by the  Purchasers  to the  Collection  Agent,  as  described in Section
5.1.4.

         "Commencement  Date" means the date  following the Conduit  Purchaser's
election not to make any further purchases under this Agreement provided that no
Event of Liquidation has occurred.

         "Conduit Lender" has the meaning specified in Section 11.3.

         "Conduit Purchaser" means Asset Securitization Cooperative Corporation,
a California cooperative corporation, and its successors and assigns.

         "Credit and  Collection  Policies"  means the policies  and  procedures
relating  to the  operation  of the credit  card  business  of DSRM and  DSRMNB,
respectively,  including,  without  limitation,  the policies and procedures for
determining  the   creditworthiness   of  potential  and  existing  credit  card
customers,  and  relating  to  the  maintenance  of  credit  card  accounts  and
collection of credit card receivables, as attached hereto as Schedule A, as such
policies and procedures  may be amended or otherwise  modified from time to time
in strict compliance with this Agreement.

         "Credit  Card   Receivables  Sale  Agreement"  means  the  Credit  Card
Receivables Sale Agreement of even date herewith between DSRM and the Seller, as
amended, restated, supplemented or otherwise modified from time to time.

         "Credit Facilities" means each of the committed loan facilities,  lines
of credit, letters of credit, surety bonds and other forms of credit enhancement
available to the Conduit Purchaser to support the Conduit Purchaser's commercial
paper and which are not Liquidity Facilities.

         "Days Sales  Outstanding"  means,  as of any date of  determination,  a
number  of days  equal  to the  product  of (a) the  number  of days in the most
recently  ended  month  and (b) (i) the  aggregate  outstanding  balance  of all
Receivables (other than Finance Charge Receivables) as of the end of such month,
divided  by (ii)  the  aggregate  increase  in the  outstanding  balance  of all
Receivables   during  such  month,  but  excluding   increases   resulting  from
newly-arising Finance Charge Receivables.

<PAGE>

         "Default  Ratio" means,  as of any date of  determination,  a fraction,
expressed as a percentage,  the numerator of which is the aggregate  outstanding
balance of all Receivables  that became Defaulted  Receivables  during the month
most recently ended,  and the denominator of which is the aggregate  outstanding
balance of all  Receivables  on the last Business Day of the month most recently
ended.

         "Defaulted  Account" means an Account as to which,  consistent with the
Credit and Collection Policies,  the Collection Agent charged off Receivables in
such Account as uncollectible.

         "Defaulted Receivable" means any Receivable:

         (1)  all or any portion  of which remains unpaid more than 90 days past
              the date on which it was due; or

         (2)  that is owed by an Obligor that is in bankruptcy,  reorganization,
              insolvency or similar proceedings.

         "Delinquency Ratio" means, as of any date of determination, a fraction,
expressed as a percentage,  the numerator of which is the aggregate  outstanding
balance of all Receivables that were unpaid for more than 60 days but fewer than
91 days  past the dates on which  they were due as of the end of the month  most
recently  ended,  and the  denominator  of  which is the  aggregate  outstanding
balance of all Receivables as of such date.

         "Diamond Shamrock Entity" has the meaning specified in Section 10.1(n).

         "DSRM"  means  Diamond  Shamrock  Refining  and  Marketing  Company,  a
Delaware corporation, and its successors.

         "DSRMNB" means DSRM  National Bank, a  national banking association and
its successors.

         "DSRMNB  Participation   Agreement"  means  that  certain  Amended  and
restated  Participation  Agreement  dated as of May 1, 1997,  between DSRMNB and
DSRM,  as amended,  restated,  supplemented  or otherwise  modified from time to
time.

         "DSRM  Servicing  Agreement"  means the Data  Processing  and Servicing
Agreement  dated as of September 13, 1996,  between DSRMNB and DSRM, as amended,
restated, supplemented or otherwise modified from time to time.

         "Eligible Account" means an Account:

         (1)  that is not an Acquired Account);

<PAGE>

         (2)  that is payable in United States dollars;

         (3)  the Obligor  of which has  its most  recent billing address in the
United States or its territories or possessions;

         (4)  that  DSRM  or DSRMNB, as  applicable, has  not  classified on its
records as counterfeit, canceled, fraudulent, stolen or lost;

         (5)  that  would  not  be  deemed  a  Defaulted Account upon conveyance
of the related Receivables to the Purchaser; and

         (6)  that arises under a Cardholder Agreement with respect to  which no
Receivable or  any interest therein has previously been sold, assigned or trans-
ferred to  any  Person other than  a  Purchaser pursuant to this Agreement, DSRM
pursuant to the  DSRMNB Participation Agreement or the  Seller  pursuant  to the
Credit Card Receivables Sale Agreement.

         "Eligible Receivable" means any Receivable:

         (1)  which has arisen under an Eligible Account;

         (2)  which is not unpaid for more  than 60 days past  the date on which
              it was due;

         (3)  which is payable only in U.S. dollars;

         (4)  which is not a Defaulted Receivable or a Charge-off;

         (5)  which is not subject to any dispute, claim, defense or offset;

         (6)  which is an  "account"  or  a "general   intangible"  within  the
              meaning  of the  Uniform Commercial Code of the State  in which is
              located the Seller's place of business or, if  the Seller has more
              than one place of business, the Seller's chief executive office;

         (7)  which  arose in the ordinary course of business of DSRMNB or DSRM,
              as applicable, from a bona fide sale  of merchandise  or insurance
              or  the  rendering  of  services  accepted by  the Obligor of that
              Receivable and was acquired from DSRM  pursuant to the Credit Card
              Receivables Sale Agreement;

         (8)  in which the  applicable Purchaser  shall, upon the Purchase of an
              Ownership Interest therein, acquire  good and marketable title  to
              the  Ownership Interest  therein,  free and  clear  of  all liens,
<PAGE>
              security interests and encumbrances other than any in favor of any
              Purchaser that may be created under this Agreement;

         (9   that is the  legal, valid  and binding payment  obligation  of the
              Obligor thereon;

         (10) which together with  the Cardholder Agreement related thereto does
              not  contravene or  violate in  any respect  any  laws,  rules  or
              regulations  applicable  thereto (including,  without  limitation,
              laws, rules, and regulations relating to  usury, truth in lending,
              consumer credit  protection, fair  credit billing, fair credit re-
              porting,  equal  credit  opportunity  and  fair  debt   collection
              practices and privacy);

         (11) which is  not subject to any restrictions on the transfer, assign-
              ability or sale thereof;

         (12) which satisfies  in all material respects all applicable  terms of
              the Credit and Collection Policies; and

         (13) which  the Administrative  Agent has  not designated,  upon thirty
              days' notice to  the Seller, as  no longer  eligible for  transfer
              hereunder.

         "ERISA" means the Employee  Retirement  Income Security Act of 1974 and
the rules and regulations thereunder, as amended from time to time.

         "ERISA   Affiliate"  means  any  trade  or  business  (whether  or  not
incorporated) that is treated as a single employer with the Seller under Section
414 of the Code.

         "Event of Liquidation" means any one or more of the following events:

         (a)  the  Parent's   long-term  unsecured  private debt  or public debt
              rating  falls  below   BBB- from S&P or  Baa3  from  Moody's;  the
              Performance  Support  Agreement  shall cease  to be in  full force
              and effect;  or  the  Parent  shall have  disaffirmed or otherwise
              repudiated its obligations under the Performance Support Agreement
              or  notified  the  Administrative Agent  or  any  Purchaser of its
              intention to do so;

         (b)  Any of  DSRMNB , DSRM or the  Seller  shall no longer be a wholly-
              owned direct or indirect subsidiary of the Parent;

         (c)  the Seller shall cease to be a member of the Conduit Purchaser;

<PAGE>
         (d)  the Seller or the Collection Agent (if it is DSRM or any   Diamond
              Shamrock Entity) shall fail to make any payment when due to any of
              the Purchasers under any of the Sale Documents;

         (e)  any  Diamond  Shamrock  Entity  shall breach any representation or
              warranty  or  fail  to perform or  observe  any term , covenant or
              agreement applicable to it which is contained in any Sale Document
              to which it is a party other than one covered by clause (d) above,
              and such breach or failure  is likely to have a  material  adverse
              effect on the collectibility of the Receivables;

         (f)  (i) the Seller, DSRM, DSRMNB or the Parent shall be in bankruptcy,
              reorganization,  insolvency or  similar  proceedings  or  (ii) any
              other Diamond  Shamrock Entity shall be in bankruptcy, reorganiza-
              tion,  insolvency or  similar  proceedings and any such proceeding
              has had or can reasonably be  expected to have  a material adverse
              effect on  the collectibility  of the  Receivables, the ability of
              any of the Diamond Shamrock  Entities to  perform their respective
              obligations under the Sale Documents  or the legality, validity or
              enforceability of any Sale Document or of the Ownership Interest;

         (g)  the Aggregate Ownership  Interest shall  exceed the Maximum Owner-
              ship Interest and the Seller shall have failed to make the payment
              required under Section 3.3;

         (h)  on any Settlement Date the Delinquency Ratio shall be greater than
              the Historical Delinquency Ratio;

         (i)  on any Settlement Date the Days Sales Outstanding exceeds 65 days;

         (j)  on any Settlement Date  the Default  Ratio shall  be  greater than
              5.25%;

         (k)  on any  Settlement Date the Charge-off Ratio shall be greater that
              2.75%;

         (l)  the  occurrence  of any  event which  has had or can reasonably be
              expected  to  have a  material adverse effect  on (i) the collect-
              ibility of  the Receivables, or (ii) the legality, validity or en-
              forceability of any Sale Document or of the Ownership Interest; or

         (m)  The  Parent, DSRM or  the Seller shall default in the payment when
              due (whether at scheduled maturity, required prepayment, demand or
              otherwise) with respect to any indebtedness of the Parent, DSRM or
              the Seller,  the  outstanding principal  amount of which indebted-
              ness, in the aggregate, is $25 ,000, 000 or higher; or the Parent,
              DSRM or the Seller shall default in  the performance or observance
              of any  other obligation or condition with respect to any such in-
              debtedness or any other event shall occur or  condition exist, if,
              as a result, such indebtedness has become or can then  be declared
              to be due and payable prior to its stated maturity other than as a
              result of a regularly scheduled payment.
<PAGE>

         "Extension Date" means the last day of each calendar quarter commencing
June 30, 1999.

         "Facility  Limit" means the excess of  $250,000,000  over the aggregate
outstanding  "Investment" under and as defined in the Trade Receivables Purchase
Agreement;  provided,  however,  that on and after  the  Termination  Date,  the
"Facility Limit" shall equal the outstanding Investment from time to time.

         "Federal Funds Rate" means, for any period, a fluctuating interest rate
per annum equal for each day during such period to (a) 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 immediately  preceding  Business Day)
by the Federal Reserve Bank of New York, or (b) 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.

         "Fee Letter" means the letter  agreement of even date herewith  between
the Administrative Agent and the Seller relating to fees.

         "Finance  Charge  Collections"  means,  with respect to any Credit Card
Receivable,  that portion of Collections  attributable to amounts collected from
Obligors in respect of Periodic Finance Charges and Service Charges.

         "Finance Charge  Receivables" means all amounts billed to an Obligor on
an Account in respect of Periodic  Finance Charges and Service Charges that have
not yet been paid.

         "Historical  Delinquency Ratio" means, as of any date of determination,
a  percentage  equal to the  product  of (i) 1.50 and (ii) the  greatest  of the
fractions determined for each month during the period of 12 months preceding the
date of  determination  obtained by  dividing  (A) the  aggregate  amount of all
Receivables  that were  unpaid for more than 60 days but fewer than 91 days past
the dates on which  they  were due as at the end of each  such  month by (B) the
outstanding balance of Receivables as at the end of each such month.

         "Incremental  Purchase"  means  any  Purchase  (other  than an  Initial
Purchase) which causes the amount of the Investment to increase.

         "Initial  Purchase"  means,  with  respect  to a  Purchaser,  the first
Purchase by such Purchaser under this Agreement.

<PAGE>
         "Investment" means the sum of:

         (1)  the aggregate amount of cash paid by  the Purchasers to the Seller
              for  their respective  Initial Purchases  and all Incremental Pur-
              chases, less the amount of all Collections  received  and  applied
              pursuant to  Section 7.2.2(b)(ii)(A) and of  all payments  made by
              the Seller and applied under Sections 3.3 6.2(c) and 7.3; and

         (2)  any amounts owed by the Seller to the Purchasers under Article XI.

         "LIBO Rate"  means,  for any  Settlement  Period,  the rate of interest
determined by the  Administrative  Agent to be the average (rounded upwards,  if
necessary,  to the  nearest  1/16 of 1%) of the rates  per  annum at which  U.S.
dollar deposits in immediately  available funds are offered by CIBC two Business
Days prior to the  beginning  of such  Settlement  Period to prime  banks in the
interbank  eurodollar  market  as at or about  10:00  A.M.  New York  time,  for
delivery on the first date of such Settlement Period, for a one month period and
in an amount equal to the amount of the Investment to be funded at the LIBO Rate
as of such second Business Day prior to the beginning of such Settlement Period.

         "LIBO Rate (Reserve Adjusted)" means,  relative to any Purchase for any
Settlement  Period,  a rate per annum  (rounded  upwards,  if necessary,  to the
nearest 1/16 of 1%) determined pursuant to the following formula:

                  LIBO Rate                 =        LIBO Rate
                                                     ----------
                  (Reserve Adjusted)                 1-LIBOR
                                                     Reserve
                                                     Percentage

The  Administrative  Agent shall determine the LIBO Rate (Reserve  Adjusted) for
each  Settlement  Period  applicable  to any  Purchase  and  promptly  provide a
certificate  of such  calculation  to the Seller  thereof  (which  determination
shall, in the absence of manifest error, be conclusive on the Seller).

         "LIBOR Reserve Percentage" means, relative to each Settlement Period, a
percentage  (expressed  as a decimal)  equal to the daily  average  during  such
Settlement  Period of the  percentages in effect on each day of such  Settlement
Period,  as prescribed by the Board of Governors of the Federal  Reserve  System
(or any successor  thereof) for  determining  the maximum  reserve  requirements
applicable to "Eurocurrency  Liabilities"  pursuant to Regulation D or any other
applicable  regulation which prescribes reserve requirements  applicable to such
"Eurocurrency Liabilities".

         "Liquidity  Facilities"  means each of the committed  loan  facilities,
lines of credit and other  financial  accommodations  available  to the  Conduit
Purchaser to support the liquidity of the Conduit  Purchaser's  commercial paper
notes and medium term notes.

         "Maximum Ownership Interest" means 100%.

<PAGE>

         "Moody's"  means  Moody's Investors  Service, Inc., and  any  successor
thereto.

         "Obligor"  means any  Person  that is  obligated  to make  payment on a
Receivable pursuant to a Cardholder Agreement.

         "Operating  Expense Fee" means the percentage used to determine the fee
payable by the Seller to the Conduit Purchaser, as described in Section 5.1.3.

         "Other Taxes" has the meaning specified in Section 11.5(b).

         "Ownership  Interest"  means,  at any time,  the  undivided  percentage
ownership  interest  of a  Purchaser  in  the  Receivables  Assets  and  related
Collections as determined pursuant to Section 3.1(a).

         "Parent" means  Ultramar Diamond  Shamrock Corporation, a Delaware cor-
poration or any successor.

         "Participating Receivable" means  each Receivable subject to the Parti-
cipation Interest.

         "Participation  Interest" means the 100% participation interest of DSRM
under the DSRMNB  Participation  Agreement in all Receivables under all Accounts
established and maintained by DSRMNB.

         "PBGC" means the Pension Benefit Guaranty Corporation and any successor
thereto.

         "Performance Support Agreement" means the Performance Support Agreement
of even date  herewith  executed  by the  Parent in favor of the  Administrative
Agent and the  Purchasers,  as  amended,  restated,  supplemented  or  otherwise
modified from time to time.

         "Periodic Finance Charges" shall have with respect to any Account,  the
meaning  specified in the  Cardholder  Agreement  applicable to such Account for
finance charges or any similar term.

         "Person" means any  corporation,  natural person,  firm, joint venture,
partnership,  limited liability  company,  trust,  unincorporated  organization,
enterprise, government or any department or agency of any government.

         "Plan" means each employee  benefit plan (as defined in Section 3(3) of
ERISA)  currently  sponsored,  maintained or contributed to by the Seller or any
ERISA  Affiliate or with respect to which the Seller or any ERISA  Affiliate has
any liability.

         "Prime Rate" means the rate announced by CIBC from time to  time as its
prime rate in the United States, such rate to change as and when such designated
rate changes.  The Prime Rate is not intended  to be the lowest rate of interest

<PAGE>

charged by CIBC in connection with extensions of credit to debtors.

         "Purchase"  means any purchase by a Purchaser of an Ownership  Interest
from the Seller under this  Agreement,  and includes  such  Purchaser's  Initial
Purchase,  any  Incremental  Purchase  and  any  Reinvestment  Purchase  by such
Purchaser.

         "Purchase  Discount"  means the percentage used to determine the amount
payable by the Seller to the Purchasers to cover the Purchasers' cost of funding
the Purchases, as described in Section 5.1.1.

         "Purchase  Premium" means the  percentage  used to determine the amount
payable by the Seller to the Purchasers, as described in Section 5.1.2.

         "Purchaser"  means  each  of  the Conduit  Purchaser  and the Back-Stop
Purchaser.

         "Receivable" means the obligation of an Obligor under an Account to pay
for merchandise  sold or services  rendered,  and includes the rights of DSRMNB,
DSRM or the Seller, as applicable, to payment of any interest,  Periodic Finance
Charges or Service Charges and in the merchandise (including returned goods) and
contracts relating to such Receivable,  all security  interests,  guaranties and
property  securing  or  supporting  payment  of such  Receivable,  all books and
records  relating  to the  Receivables,  all  rights of the  Seller or DSRM,  as
applicable,  under the  Credit  Card  Receivables  Sale  Agreement,  the  DSRMNB
Participation  Agreement  and the Servicing  Agreement,  and all proceeds of the
foregoing.

         "Receivables Activity Report" means the report in the form of Exhibit E
hereto to be provided by the  Collection  Agent to the  Administrative  Agent in
accordance with Sections 6.4 and 7.4 of this Agreement.

         "Receivables Assets" means  all Receivables (other  than  Participating
Receivables) and the Participation Interest.

         "Receivables Systems" has the meaning specified in Section 9.1(p).

         "Reinvestment Purchase" means any Purchase made with Collections.

         "Reserve"  means,  as of any date, an amount equal to the Investment on
such date multiplied by the greater of (a) 10% and (b) the percentage equivalent
of a  fraction,  the  numerator  of which  equals the sum of the items set forth
below (each expressed as a percentage), and the denominator of which equals 100%
minus such sum:

         (1)  the product  of (a) 2.00 and (b) the highest monthly Default Ratio
              for any of the 12 months preceding such date;

<PAGE>

         (2)  the Collection Agent Fee; and

         (3)  the Yield Reserve Percentage.

         "S&P" means Standard & Poor's, a division of The McGraw-Hill Companies,
Inc., and any successor thereto.

         "Sale Documents" means this Agreement, the Credit Card Receivables Sale
Agreement,  the Blocked Account Agreements,  the DSRMNB Participation Agreement,
the DSRM  Servicing  Agreement,  the  Exhibits  hereto and  thereto to which the
Seller is a party and all other certificates,  agreements and documents executed
from time to time by the Seller in connection with the transactions contemplated
in this Agreement.

         "Seller" means Coyote Funding,  L.L.C.,  a Delaware  limited  liability
company, and its successors and permitted assigns.

         "Service Charges" means with respect to any Receivable,  fees specified
in the related Cardholder  Agreement applicable to the related Account as annual
membership or annual fees, late charges,  late payment  charges,  returned check
fees,  overlimit  charges or default  charges or any  similar  terms  other than
Periodic Finance Charges.

         "Settlement  Date" means any date,  as described in Section 7.1 of this
Agreement, on which the Collection Agent is required to remit specified payments
to the Purchasers.

         "Settlement  Period" means the period from (and including) a Settlement
Date (or, in the case of the initial  Settlement  Period  under this  Agreement,
from  the  date  of the  earliest  Initial  Purchase)  to  (but  excluding)  the
immediately succeeding Settlement Date.

         "Taxes" has the meaning specified in Section 11.5(a).

         "Termination  Date"  means the earlier of (a) March 27,  2000,  as such
date may be extended  pursuant to Section 2.2 and (b) the date on which an Event
of Liquidation occurs.

         "Trade  Receivables  Purchase  Agreement"  means the Trade  Receivables
Purchase  Agreement of even date herewith  among the Seller,  DSRM,  the Conduit
Purchaser,  the Back-Stop  Purchaser and the Administrative  Agent relating to a
portfolio of trade  receivables  originated by certain  Affiliates of the Seller
and serviced by DSRM.

         "Unused Facility Fee" has the meaning specified in Section 5.2.

         "Year 2000 Compliant" has the meaning specified in Section 9.1(p).

<PAGE>

         "Yield  Reserve  Percentage"  means,  for any  Settlement  Period,  the
greatest  Yield  Reserve  Shortfall  Percentage  in any of the three  Settlement
Periods immediately preceding such date times the fraction 104/360.

         "Yield Reserve Shortfall  Percentage" means, for any Settlement Period,
the  excess,  if  any,  of (A) the sum of (i) the  Purchase  Premium,  (ii)  the
Purchase  Discount  multiplied by 1.3, (iii) the Operating  Expense Fee and (iv)
the Collection  Agent Fee, over (B) the ratio,  expressed as a percentage of (i)
the aggregate  Finance Charge  Collections for such Settlement Period divided by
(ii) the ending amount of Receivables for such Settlement Period.

                          ARTICLE II: PURCHASE FACILITY

         SECTION 2.1. Purchase Facility.  On the terms and conditions  described
in this Agreement,  the Conduit Purchaser may, in its sole discretion,  purchase
an Ownership  Interest in Receivables  Assets offered for sale from time to time
by the Seller.  The  Back-Stop  Purchaser,  if so requested by the Seller,  will
purchase  during  the  period on and  after the  Commencement  Date  until  (but
excluding) the  Termination  Date, an Ownership  Interest in Receivables  Assets
offered for sale from time to time (provided  that no Event of  Liquidation  has
occurred and is continuing) by the Seller.  Nothing herein shall be construed as
constituting  a  commitment  on the  part of the  Seller  to  sell an  Ownership
Interest  in  Receivables  Assets  or on  the  Conduit  Purchaser  to  make  any
Purchases.  In no event shall the Back-Stop  Purchaser's share of the Investment
exceed the excess of the Facility Limit over the  outstanding  Investment of the
Conduit Purchaser's Ownership Interest.

         SECTION 2.2. Extension or Acceleration of the Termination Date.

         (a) Prior to the occurrence of an Event of Liquidation, the Seller may,
on a quarterly  basis at least 15 days prior to any Extension  Date,  request by
notice to the Back-Stop  Purchaser  that the date specified in clause (a) of the
definition  of  "Termination  Date"  be  extended  (any  such  request  being an
"Extension  Notice").  The  Back-Stop  Purchaser  shall not have a commitment or
obligation to extend the Termination  Date. If the Back-Stop  Purchaser,  in its
sole  discretion,  agrees to accept  any  request  on the part of the  Seller to
extend  the  Termination  Date,  it shall so advise the Seller in writing by not
later  than  five  Business  Days  prior to such  Extension  Date.  In the event
Back-Stop Purchaser shall fail to advise the Seller in response to any Extension
Notice,  such request for extension shall be deemed to have been declined.  Upon
acceptance in writing by the Back-Stop  Purchaser of any request set forth in an
Extension Notice,  the Termination Date shall thereupon become the date which is
360 days following  such  Extension  Date. As of no date during the term of this
Agreement shall the period from such date to the Termination Date then in effect
exceed a period of 360 days.

         (b)  Notwithstanding the  provisions of Section  2.2(a), the Seller may
accelerate the  Termination Date by notifying the Purchasers and the Administra-
tive Agent to such effect. Such notice shall be given by no later than 1:00 p.m.
New York time  on the  third Business  Day preceding  the date  on which  Seller
intends the Termination Date to occur.

                     ARTICLE III: SALE OF OWNERSHIP INTEREST

         SECTION 3.1.  Determination of Ownership Interest.

         (a)  When a  Purchaser accepts an offer from the Seller to  purchase an
interest in Receivables Assets, such Purchaser shall have acquired,  in exchange
for the purchase price paid, an undivided  percentage  ownership interest in the
Receivables Assets and any Collections  relating to the Receivables  Assets. The
undivided  percentage  interest of a  Purchaser  in the  Receivables  Assets and
Collections  shall  be  referred  to  in  this  Agreement  as  such  Purchaser's
"Ownership  Interest".  The Ownership  Interests of all of the Purchasers on any
date shall be referred to herein as the "Aggregate  Ownership  Interest" on such
date,  and,  except as provided in paragraphs  (b) and (c) of this  Section,  is
equal to the following fraction (expressed as a percentage):

                       I + R
                     ---------
                        ER

where:

         I   =  the Investment on such date

         R   =  the Reserve on such date

         ER  =  the outstanding  balance of  all Eligible Receivables  excluding
                Finance Charge Receivables on such date

The  Ownership  Interest  will change  from time to time,  except as provided in
paragraphs  (b) and (c) of this  Section,  whenever the  Investment,  Reserve or
Eligible Receivables changes.

         (b)  During  any  period  when the  Investment  is being  reduced,  the
Aggregate Ownership Interest will remain fixed at the percentage in effect as of
the close of business on the Business Day immediately preceding the commencement
of that period.

         (c) The Aggregate  Ownership Interest in the Receivables Assets will be
reduced to zero when the Purchasers receive the following amounts:

         (1)  their respective shares of the Investment;

         (2)  as  further provided  in  Section  7.2.2(b)(i),  their  respective
              shares of the accrued and unpaid portion of the Purchase Discount,
              Purchase Premium,  Unused  Facility  Fee, Collection Agent Fee (if

<PAGE>

              not payable to a  Diamond Shamrock Entity), Operating  Expense Fee
              and Administration Fee; and

         (3)  all  other  fees, expenses  and  amounts payable to the Purchasers
              under this Agreement.

When the Aggregate Ownership Interest in the Receivables is reduced to zero, the
Purchasers shall not be entitled to receive any additional  Collections from the
Receivables Assets.

         (d) The  Administrative  Agent shall  maintain books and records (which
shall be presumed  accurate  absent  manifest  error)  reflecting the respective
shares of the  Purchasers in the  Aggregate  Ownership  Interest  based upon the
aggregate  amount of cash paid by each  Purchaser  to the Seller for the Initial
Purchase by such Purchaser and all Incremental Purchases by such Purchaser, less
the  amount  of  all  Collections  received  and  applied  pursuant  to  Section
7.2.2(b)(ii)(A)  and of all  payments  made  by the  Seller  and  applied  under
Sections 3.3 6.2(c) and 7.3. The  Administrative  Agent shall  allocate  amounts
paid by the Seller  hereunder  in respect of the  Aggregate  Ownership  Interest
accordingly,  taking into account the differing rates for  determining  Purchase
Discount for each Purchaser.

         (e) Subject to the provisions of Section  8.2(d),  upon any Purchaser's
purchase of an Ownership Interest, the Administrative Agent shall be entitled to
(i)  endorse  all  drafts,  checks and other  forms of payment on account of the
Receivables  and to  settle,  adjust  and  forgive  any  amounts  payable on the
Receivables   and  (ii)  exercise  all  other  incidents  of  ownership  in  the
Receivables Assets.

         (f) The Seller  hereby  assigns to the  Administrative  Agent,  for the
benefit  of the  Purchasers,  all rights of the  Seller  against  DSRM under the
Credit Card  Receivables  Sale Agreement and agrees that (i) the  Administrative
Agent and the  Purchasers  shall be third party  beneficiaries  of the  Seller's
rights under the Credit Card  Receivables  Sale Agreement,  (ii) the Seller will
enforce its rights under the Credit Card Receivables Sale Agreement on behalf of
the Administrative Agent and the Purchasers and (iii) the Administrative  Agent,
on behalf of the  Purchasers  shall be entitled to enforce  such rights  against
DSRM if the Seller  does not  enforce  such  rights  following  notice  from the
Administrative Agent, as if the Administrative Agent and the Purchasers had been
parties to the Credit Card Receivables Sale Agreement.

         SECTION 3.2. Frequency of Determining Aggregate Ownership Interest. The
Collection  Agent  shall  determine  or be deemed  to  determine  the  Aggregate
Ownership  Interest and report it to the  Administrative  Agent at the following
times:

         (a)  on the date of each Initial Purchase;

         (b)  on each Settlement Date;

         (c)  on the date of each Incremental Purchase;

<PAGE>

         (d)  on the Business Day immediately  preceding any period during which
the Investment is being reduced;

         (e)  on the Business Day on which the Investment ceases being reduced;

         (f)  when the  Collection Agent has reason to believe  that the Maximum
Ownership Interest has been exceeded; and

         (g)  at the request of any Purchaser.

         SECTION  3.3.  Maximum  Ownership  Interest.  If during any  Settlement
Period the Aggregate  Ownership  Interest at the end of such  Settlement  Period
exceeds the Maximum  Ownership  Interest,  the Seller shall  immediately  make a
payment to the Collection Agent in an amount  sufficient to reduce the Aggregate
Ownership  Interest  to the  Maximum  Ownership  Interest  but not to exceed the
portion of Collections  paid to Seller during such Settlement  Period.  Any such
payment will be used to reduce the  Investment  and shall be applied  ratably to
the Ownership  Interests of the Purchasers  according to their respective shares
of the Investment.

         SECTION 3.4.  Blocked  Accounts and  Collections.  The Collection Agent
shall identify and segregate all Collections  within 24 hours of receipt thereof
by the Collection  Agent, the Seller or DSRMNB,  as the case may be, and deposit
such Collections,  on a daily basis, in the form received,  to a Blocked Account
Bank for deposit into a Blocked  Account.  In  furtherance  of the intent of the
parties  described  in Section 3.1 above,  and in order to secure the prompt and
complete  payment,  observance  and  performance of this  Agreement,  the Seller
hereby assigns and pledges to the  Administrative  Agent, for the benefit of the
Purchasers,  and grants a security  interest  thereto in, all of Seller's  right
title and interest in each Blocked Account,  including,  without limitation, any
deposits or sums at any time held in each Blocked  Account.  Upon the occurrence
and during the continuation of an Event of Liquidation, the Administrative Agent
may take control of the Blocked Accounts, and either the Administrative Agent or
any  Purchaser  may notify the Obligors  that the  Receivables  Assets have been
assigned to the Purchasers,  and in its own name and/or the name of DSRMNB, DSRM
and/or the Seller, as applicable,  demand,  collect,  receive,  receipt for, sue
for,  compound  and  discharge  any or all amounts due or to become due thereon,
and,  in the  Administrative  Agent's or  Purchasers'  discretion  (and  without
creating any obligation of the  Purchasers or  Administrative  Agent),  file any
claim or take any other action or proceeding which the  Administrative  Agent or
the Purchasers may deem necessary or appropriate to protect and realize upon the
Receivables Assets.

                           ARTICLE IV: PURCHASE PRICE

         The purchase price payable by a Purchaser for its Ownership Interest in
the Receivables and any Collections shall be comprised of a cash component and a
deferred payment component.

<PAGE>

         SECTION 4.1.  Determination of Cash Component of Purchase Price. When a
Purchaser  accepts an offer from the Seller to make a Purchase,  such  Purchaser
will pay the following amounts in cash to the Seller:

         (a)  for any Initial and   any Incremental Purchases, the amount speci-
              fied in the notice required to  be  delivered by  the Seller under
              Section 6.2(a); or

         (b)  for  a  Reinvestment  Purchase, the amount obtained by multiplying
              (i) the dollar amount of the  Collections  received on the date of
              such  Purchase by (ii) such Purchaser's Ownership Interest on that
              date, and subtracting from such amount any  amounts  then  payable
              to the  Administrative  Agent  under  Section 7.2.2(b)(i);

provided that the payment of any amount  described in (a) or (b) above would not
cause (and such amount shall be reduced so as not to cause) either:

         (1)  the Investment at any time to exceed the Facility Limit; or

         (2)  the  Aggregate Ownership Interest to exceed the  Maximum Ownership
              Interest.

         SECTION 4.2.  Determination of Deferred  Payment  Component of Purchase
Price. Upon and after the reduction of the Aggregate  Ownership Interest to zero
as described in Section  3.1(c),  all  Collections or other cash received by the
Administrative  Agent or any Purchaser on account of Receivables  Assets and the
interest  of the  Purchasers  therein and all  Receivables  Assets held by or on
behalf  of the  Purchasers  will be  transmitted  in the form  received  by such
Purchaser or the  Administrative  Agent to the Seller.  The transmission of such
amount by such Purchaser or the Administrative  Agent shall be deemed to satisfy
the payment of the deferred  payment  component of the purchase price under this
Article IV.

                          ARTICLE V: FEES AND EXPENSES

         SECTION 5.1.  Settlement Date Payments.  The Administrative  Agent will
notify the  Seller and the  Collection  Agent on the last  Business  Day of each
calendar month of the Purchase Discount,  Purchase Premium, Unused Facility Fee,
Operating  Expense Fee,  Administration  Fee and  Collection  Agent Fee. On each
Settlement  Date,  the  Seller  will  pay to the  Purchaser  the  following,  in
accordance with Section 7.2.2.

         SECTION 5.1.1.  Purchase Discount.  A Purchase  Discount  equal to, for
each day in any Settlement Period, the weighted average of the following:

         (i)  the weighted  average  determined on each such day of the discount
rates on all  commercial  paper  notes  issued  by the  Conduit  Purchaser  at a
discount on such day (other than  commercial  paper notes the  proceeds of which
are  used by the  Conduit  Purchaser  to (x)  purchase  receivables,  or  extend
financing secured thereby, at a fixed interest rate or (y) conduct any arbitrage
activities of  the  Conduit  Purchaser), converted to an annual yield-equivalent
rate on the basis of a 360-day year;

<PAGE>

         (ii)  the  weighted  average determined  on each such day of the annual
interest rates payable on all interest-bearing  commercial paper notes issued by
the Conduit  Purchaser  on such day (other than (A) the  commercial  paper notes
described  in clauses (x) and (y) of  paragraph  (i)  above),  on the basis of a
360-day year;

         (iii)  the Alternative  Rate for the Settlement  Period relating to the
Settlement  Date to the extent that the Conduit  Purchaser  has  borrowed  money
during such  Settlement  Period  (which  money  shall be  borrowed  only after a
determination by the Conduit Purchaser that financing its activities during such
period  by  issuing   commercial   paper  notes  would  not  be  practicable  or
cost-efficient); and

         (iv)  the  Alternative Rate for the Settlement  Period relating to such
Settlement Date in respect of that portion of the Investment,  if any, allocable
to the Ownership Interest of the Back-Stop Purchaser.

         SECTION 5.1.2.  Purchase Premium.  In respect of the Ownership Interest
of the Conduit  Purchaser, a Purchase Premium equal to the rate per annum speci-
fied as such in the Fee Letter.

         SECTION  5.1.3.  Operating  Expense  Fee.  In respect of the  Ownership
Interest of the Conduit  Purchaser,  an Operating  Expense Fee to cover  routine
operating  expenses of the Conduit  Purchaser  incurred  during the  immediately
preceding Settlement Period, including fees payable to commercial paper dealers,
issuing and paying agents, rating agencies, printers and auditors; provided that
(i) the Operating Expense Fee in respect of commercial paper dealer  commissions
shall not exceed a rate per annum equal to 0.05% and (ii) the Operating  Expense
Fee in respect of issuing and paying agent fees,  rating  agency fees,  printing
and all other routine operating expenses shall not exceed a rate per annum equal
to 0.01%.  If the amount of any  Operating  Expense Fee paid for any  Settlement
Period  exceeds the actual  amount of the  operating  costs and  expenses of the
Conduit Purchaser  incurred during such period,  then the Conduit Purchaser will
remit on an annual  basis the  excess to the  Seller in the form of a  patronage
distribution.

         SECTION 5.1.4.  Collection  Agent Fee. A Collection  Agent Fee equal to
2.00% per annum, which fee shall be remitted by the Purchasers to the Collection
Agent. If a Diamond Shamrock Entity is acting as the Collection  Agent, then the
Collection  Agent shall retain an amount equal to the  Collection  Agent Fee (in
full  satisfaction  of the payment of such fee to the  Collection  Agent) out of
amounts  required to be  remitted by the  Collection  Agent in  accordance  with
Section 7.2.2(b)(i).

         SECTION 5.1.5. Administration Fee. In respect of the Ownership Interest
of  the  BackStop  Purchaser   outstanding  during  the  immediately   preceding
Settlement Period, if any, an Administration Fee of up to 0.01% to cover routine
operating  expenses of the Back-Stop  Purchaser incurred during such immediately
preceding Settlement Period.

<PAGE>
         SECTION 5.2. Unused Facility Fee. On each Settlement  Date, in addition
to the amounts  payable  pursuant to Section  5.1,  the Seller  shall pay to the
Back-Stop Purchaser an "Unused Facility Fee" for the period from the immediately
preceding  Settlement  Date (or, in the case of the initial payment of such fee,
from the date  hereof) to such  Settlement  Date equal to (i) the rate per annum
specified in the Fee Letter for computing the Unused Facility Fee, multiplied by
(ii) an amount, if positive, equal to the Facility Limit minus the average daily
amount of the outstanding  Investment  (calculated without regard to any amounts
then owed by the Seller under Article XI of this  Agreement or under any similar
provision  in any  other  Sale  Document).  The  Unused  Facility  Fee  shall be
calculated on the basis of a year of 360 days for actual days elapsed, and shall
be payable by the Seller from sources  other than  Collections  allocable to the
Purchasers.  There shall be credited  against  the Unused  Facility  Fee payable
hereunder,  the actual  amount of any "Unused  Facility  Fee" (as defined in the
Trade Receivables  Purchase Agreement) actually paid under the Trade Receivables
Purchase Agreement.

         SECTION 5.3.  Structuring Fee.  The Seller  will pay  a structuring fee
to the Purchaser on the date on which this Agreement is executed as set forth in
the Fee Letter.

         SECTION 5.4. Legal Fees and Expenses.  In addition to all other amounts
payable by the  Seller  under this  Agreement,  the Seller  agrees to pay to the
Purchasers by no later than 30 days after presentation of a bill therefore,  (i)
the  reasonable  fees and expenses of counsel for the  Purchasers  in connection
with the negotiation,  preparation,  execution, amendment and enforcement of the
Sale  Documents and advice with respect to the  Purchasers'  rights and remedies
thereunder  and (ii) all  reasonable  and  documented  out-of-pocket  costs  and
expenses of the Purchasers and the  Administrative  Agent incurred in connection
with this  Agreement  not  otherwise  provided for in this  Agreement  which are
accrued and owing to a Purchaser or the Administrative Agent, including, without
limitation,  expenses  in  connection  with  due  diligence  activities  of  the
Purchasers as to the Diamond  Shamrock  Entities after the date hereof,  such as
the costs of travel and lodging,  but excluding any expenses associated with the
replacement of the Administrative Agent.

         SECTION 5.5. Interest on Unpaid Amounts.  To the extent that the Seller
or Collection  Agent fails to pay when due to a Purchaser or the  Administrative
Agent any fee,  expense  or other  amount  payable  hereunder  or under any Sale
Document,  interest shall be due and payable on such unpaid amount, for each day
until  paid in full,  at the rate of 2.00% in  excess of the Base Rate in effect
from time to time.

         SECTION 5.6.  Audits.  In addition to all other amounts  payable by the
Seller hereunder  (including,  without limitation,  under Sections 5.1.3 and 5.4
above), the Seller shall reimburse the Purchasers and the  Administrative  Agent
in respect of all reasonable  out-of-pocket  costs and expenses incurred by them
in  the  conduct  of any  audit  or  inspection  of the  Seller,  DSRMNB  or the
Collection Agent in connection with the Sale Documents.

<PAGE>
                         ARTICLE VI: PURCHASE PROCEDURES

         SECTION 6.1. Types of Purchases. The three types of Purchases which can
be made under this Agreement are an Initial  Purchase,  an Incremental  Purchase
and a Reinvestment  Purchase.  The first  Purchase made by each Purchaser  under
this  Agreement  is the Initial  Purchase  with respect to such  Purchaser.  Any
Purchase (other than the Initial  Purchase) made by a Purchaser which causes the
amount of the Investment to increase is an Incremental  Purchase.  The amount of
each Incremental Purchase shall be $5,000,000 or greater. Any Purchase made by a
Purchaser with Collections is a Reinvestment Purchase.

         SECTION 6.2.  Notice Requirements.

         (a)  In the case of the Initial  Purchase with respect to any Purchaser
or any Incremental Purchase, the Seller will give the Administrative Agent three
Business  Days'  written  notice of its offer to sell an  Ownership  Interest in
Receivables Assets to such Purchaser.  The notice will be in the form of Exhibit
A, and will include the amount of the new Investment  requested and the Business
Day on which the Purchase will be made.  The Conduit  Purchaser  will notify the
Seller  within one Business Day after the receipt of such notice from the Seller
whether it intends to accept or reject the offer.

         (b)  Each of the Seller and the Conduit Purchaser may elect not to make
Reinvestment  Purchases by notifying  the other  parties  hereto to such effect.
Such notice shall be given by no later than 1:00 P.M. New York time on the third
Business  Day  preceding  the  date  on  which  the  Reinvestment  Purchase  was
contemplated to be made. The notice will be in the form of Exhibit B-1, and will
specify (i) the date on which  Reinvestment  Purchases  shall cease and (ii) the
amount to which the Investment  shall be reduced before  Reinvestment  Purchases
will  recommence.  No such notice  shall be required if an Event of  Liquidation
occurs,  and no further  Reinvestment  Purchases by any Purchaser  shall be made
upon the occurrence of an Event of Liquidation.

         (c)  The Seller may, on any Business Day (provided that notice has been
given to the  Administrative  Agent in the form of Exhibit  B-2 by no later than
1:00 P.M. New York City time on the third  Business Day prior  thereto),  reduce
the dollar amount of the Investment in lieu of the application of Collections to
the amount of such  reduction  by paying to the  Administrative  Agent,  for the
ratable  account of the  Purchasers  based upon their  respective  shares of the
Investment,  by  12:00  Noon  New  York  City  time on the  Business  Day of the
contemplated  reduction,  the  dollar  amount by which the  Investment  is to be
reduced  after giving  effect to the  application  of  Collections  received and
applied to the reduction of the Investment on such Business Day.

         SECTION 6.3.  Conditions  Precedent to Initial Purchase.  The following
conditions  must be  satisfied  before  the first  Initial  Purchase  hereunder,
whether made by the Conduit Purchaser, in its sole discretion,  or the Back-Stop
Purchaser:

<PAGE>

         SECTION 6.3.1. Membership in the Purchaser. The Seller will have joined
the Conduit  Purchaser  as a member by  delivering  to the Conduit  Purchaser an
executed Membership Agreement in the form of Exhibit C, together with the sum of
$10,000 as an  investment  in the Conduit  Purchaser.  Such  investment  will be
refunded by the Conduit  Purchaser  to the Seller when the  Aggregate  Ownership
Interest is reduced to zero and no further Purchases are to be made.

         SECTION 6.3.2. Fees. The  Administrative  Agent and each Purchaser will
have received all fees due  hereunder or in  connection  herewith on or prior to
the date of such first Initial Purchase hereunder.

         SECTION 6.3.3.  Absence of Liens.  The  Administrative  Agent will have
received  evidence  acceptable to it (including  Uniform  Commercial Code search
reports) that all Receivables,  all Receivables  Assets and all proceeds thereof
are free and clear of liens,  security interests,  claims and encumbrances other
than those created pursuant to this Agreement,  the Credit Card Receivables Sale
Agreement or the DSRMNB Participation Agreement.

         SECTION 6.3.4. Financing Statements. The Administrative Agent will have
received  acknowledgment  copies of UCC-1  financing  statements,  and all other
documents  reasonably  requested by the  Administrative  Agent,  to evidence the
perfection of the Purchasers' Ownership Interests in the Receivables Assets.

         SECTION  6.3.5.  Credit  Card  Receivables  Sale  Agreement,  Etc.  The
Administrative  Agent shall have  received  an executed  copy of the Credit Card
Receivables  Sale Agreement,  a copy certified to be a true copy of the executed
DSRMNB  Participation  Agreement,  a copy  certified  to be a true  copy  of the
executed DSRMNB  Servicing  Agreement and the written  acknowledgment  of DSRMNB
referred to in Section 2.1(b) of the Credit Card Receivables Sale Agreement.

         SECTION 6.3.6.  Receivables  Activity Report. The Administrative  Agent
will have  received  a  Receivables  Activity  Report  in the form of  Exhibit E
covering the calendar  month ending most recently prior to the date of the first
Initial Purchase hereunder.

         SECTION 6.3.7.   Resolutions.   The  Administrative  Agent  will   have
received a  certificate  of  each  of  the  Seller's , DSRM's, the Parent's  and
DSRMNB's secretary or assistant secretary attesting to:

         (a)  the resolutions  of such  Person's  Board of Directors authorizing
the execution  by such  Person of  the Sale  Documents to  be executed  by  such
Person;

         (b)  the names and signatures of the officers of such Person authorized
to execute the Sale Documents to be executed by such Person; and

<PAGE>

         (c)  the  completeness and  correctness of the attached  constitutional
documents  (certified by the  appropriate  governmental  officer) and by-laws of
such Person.

         SECTION  6.3.8.  Legal  Opinion of Seller's,  DSRM's,  DSRMNB's and the
Parents's  Counsel.  The  Administrative  Agent will have  received  one or more
opinions  from  counsel  to  the  Seller's,   DSRM,   DSRMNB's  and  the  Parent
satisfactory in form and substance to the Administrative Agent.

         SECTION 6.3.9. Good Standing  Certificates.  The  Administrative  Agent
will have received  certificates of recent date issued by the Secretary of State
of the States of Delaware  and Texas with  respect to the  Seller,  DSRM and the
Parent,  and a certificate of due status issued by the Office of the Comptroller
of the  Currency  with  respect to DSRMNB,  as to the legal  existence  and good
standing of the Seller,  DSRM and the Parent and legal  existence and due status
of DSRMNB, respectively.

         SECTION 6.3.10.  Performance  Support  Agreement.  The   Administrative
Agent will have received a duly executed Performance Support Agreement satisfac-
tory in form and substance to the Administrative Agent.

         SECTION 6.3.11.  Blocked Account Agreements.  The Administrative  Agent
will have  received  the  original  Blocked  Account  Agreement  executed by the
Seller, DSRMNB, DSRM, the Administrative Agent and each Blocked Account Bank, as
applicable.

         SECTION 6.4. Condition Precedent to All Incremental  Purchases.  Before
any Purchaser will consider making an Incremental  Purchase,  the Administrative
Agent will have received a Receivables  Activity Report in the form of Exhibit E
covering  the period from the date on which the last such  report was  delivered
under  Section 7.4 and the Business Day  preceding  the date of the  Incremental
Purchase.

         SECTION 6.5.  Conditions  Precedent to  All  Purchases.  The  following
conditions must  be satisfied  before any  Purchaser  will  consider  making any
Purchase:

         SECTION 6.5.1.  Representations and Covenants. On and as of the date of
such Purchase (i) the  representations of the Seller in Article IX shall be true
and  correct  with the same  effect as if made on such date and (ii) the  Seller
shall be in compliance with the covenants set forth in this Agreement.

         SECTION 6.5.2.  Other Documents.  The Administrative Agent and  each of
the  Purchasers  will  have  received  all other  documents that any of them had
reasonably requested from the Seller.

<PAGE>

                       ARTICLE VII: SETTLEMENT PROCEDURES

         SECTION 7.1.  Settlement Date.  Each of  the following shall constitute
a Settlement Date:

         (a)  the first Business Day of each month;

         (b)  each day designated  as a  Settlement  Date by the  Administrative
Agent;  provided,  however, that Administrative Agent shall not cause Settlement
Dates to occur on a basis more  frequent  than weekly  unless either an Event of
Liquidation has occurred or a Purchaser is itself being liquidated;

         (c)  each Business Day on which the Investment is reduced in accordance
with Section 3.1 or 6.2;

         (d)  any date on which a reduction  in the  Investment  is  required to
prevent the Aggregate  Ownership  Interest from exceeding the Maximum  Ownership
Interest; and

         (e)  each date on which any payment due to a Purchaser  from the Seller
under Article XI has not been made.

         SECTION 7.2.  Application of Collections.  The  Collection  Agent  will
apply the Collections as provided in Sections 7.2.1 and 7.2.2, as applicable.

         SECTION  7.2.1.  Application  of  Collections  on  Days  That  Are  Not
Settlement  Dates.  The Collection Agent will, by 2:00 P.M. (New York City time)
on any  Business  Day  (other  than  a  Settlement  Date)  since  the  preceding
Settlement Date, from Collections received on such day:

         (a)  first,  pay  to  the  Seller  for its  share of  ownership  in the
              Collections an amount   equal to  the product of:  (i) 1 minus the
              Aggregate Ownership Interest and (ii) total Collections; and

         (b)  second, pay  to the Seller for  a Reinvestment  Purchase an amount
              equal to the product of: (i) the Aggregate Ownership  Interest and
              (ii) total  Collections less  the  amounts  described  in  Section
              7.2.2(b)(i).

         SECTION 7.2.2.  Application of  Collections  on Settlement  Dates.  The
Collection  Agent  will,  by 3:00 P.M.  (New York City time) on each  Settlement
Date, from Collections received since the preceding Settlement Date:

         (a)  first,  pay to  the  Seller  for its  share of  ownership  in  the
              Collections  an  amount  equal  to the product of: (i) 1 minus the
              Aggregate Ownership Interest and (ii) total Collections; and

<PAGE>

         (b)  second, from the Purchasers' Aggregate  Ownership Interest in  the
              Collections, pay:

              (i)   first, to  the  Administrative Agent  for the account of the
                    Purchasers according to their respect interests  therein  an
                    amount equal to  the sum of  the following amounts  for each
                    day in the Settlement Period:

                    [(PD + PP + OEF + CAF)  x CPI]  +  [(PD +AA +  CAF) x BPI]
                      -------------------                --------------------
                             360                                 360

                    where   PD     =      Purchase Discount

                            PP     =      Purchase Premium

                            OEF    =      Operating Expense Fee

                            CAF    =      Collection Agent Fee

                            AA     =      Administration Fee

                            CPI    =      the Conduit Purchaser's Investment

                            BPI    =      the Back-Stop Purchaser's Investment

              (ii)  second,

                    (A)  if Reinvestment Purchases have been suspended, then all
                         remaining  Collections  will be  paid to the Purchasers
                         ratably  according  to their respect  Investments as  a
                         return thereof; or

                    (B)  if  Reinvestment  Purchases  have not  been  suspended,
                         then all  remaining  Collections  shall be  paid to the
                         Seller for Reinvestment Purchases.

         SECTION 7.3.  Adjustments, Etc.

         (a)  The Collection  Agent  shall  not  include  any  Receivable  as an
Eligible  Receivable if (i) the representation and warranty contained in Section
9.1(f) is no longer true with respect to any  Receivable  in which any Purchaser
has an Ownership Interest or (ii) the Seller or Collection Agent proposes to (x)
reduce or cancel the outstanding  balance of any Receivable in which a Purchaser
has an  Ownership  Interest  as a result  of  defective,  rejected  or  returned
merchandise  or  services  or in  connection  with a claim,  dispute,  or offset
asserted against such Receivable by an Obligor or (y) otherwise amend, modify or
waive any term or condition of such Receivable (other than in a manner that does
not  affect  the aging or  impair  the  collectibility  of such  Receivable  and
otherwise is in accordance with the Credit and Collection Policies).

<PAGE>

         (b)  On or before the Settlement Date next succeeding the date on which
any Receivable is affected as described in the preceding  clause (a), the Seller
shall either:

         (i)  pay to the  Collection Agent to be applied in accordance with Sec-
     tion 7.2 an amount equal to the outstanding  balance of such Receivable (or
     any affected portion thereof); or

         (ii) adjust the Aggregate Ownership  Interest in effect on such date by
     decreasing "ER" in  the  denominator  of  the fraction described in Section
     3.1(a)  by the  outstanding  balance of  the affected  Receivable (or  any 
     affected portion thereof) so long as the Aggregate Ownership Interest would
     not, as a result, exceed the Maximum Ownership Interest.

         SECTION 7.4.  Receivables  Activity  Report.  The Collection Agent will
provide the  Administrative  Agent with a Receivables  Activity  Report no later
than 3 Business Days following each Settlement  Date. The  Receivables  Activity
Report  will be in the form of  Exhibit  E and  will  cover  the  most  recently
completed Settlement Period.

             ARTICLE VIII: ADMINISTRATIVE AGENT AND COLLECTION AGENT

         SECTION 8.1.  Appointment of  Administrative  Agent. Each Purchaser has
appointed  CIBC  as  its  Administrative  Agent.  The  Administrative  Agent  is
responsible  for  administering  and enforcing this Agreement and fulfilling all
other duties  expressly  assigned to it in this  Agreement.  Each  Purchaser has
granted the Administrative  Agent the authority to take all actions necessary to
assure the Seller's  compliance with the terms of this Agreement and to take all
actions  required or  permitted to be  performed  by such  Purchaser  under this
Agreement.

         SECTION 8.1.1.  Replacement of Administrative  Agent.  Either Purchaser
may, at any time in its  discretion,  upon 120 days' prior written notice to the
Administrative  Agent and the Seller remove the Administrative Agent and appoint
a new  Administrative  Agent acceptable to all Purchasers,  which shall have the
duties described in Section 8.1. Such appointment of a successor  Administrative
Agent shall be effective upon the  acceptance by such  successor  Administrative
Agent of all of the duties and  obligations  of the  Administrative  Agent under
this Agreement. The appointment of a new Administrative Agent shall not increase
any of the fees payable under this  Agreement and any expenses  associated  with
such  appointment  shall be paid by the  Purchasers  and/or  the  Administrative
Agent.

         SECTION 8.2.  Appointment of Collection Agent.

         (a)  Each  Purchaser  appoints  DSRM as its  Collection  Agent  and the
Collection  Agent  accepts  such  appointment.  The  Collection  Agent  shall be
responsible for collecting the Receivables  and  Receivables  Assets,  tracking,
holding and remitting the Collections and fulfilling all other duties  expressly
assigned to it in this Agreement.

<PAGE>

         (b)  The Collection Agent shall,  on each day on which  Collections are
received  by it, set aside and hold in trust for the  Purchasers  their share of
such Collections.

         (c)  Each Purchaser grants the Collection Agent the authority necessary
to carry out its  duties  under  this  Agreement  for so long as it is acting as
Collection Agent.

         (d)  Each Purchaser grants to each Collection  Agent, for so long as it
is acting in that  capacity,  an  irrevocable  power of  attorney to endorse all
drafts,  checks and other forms of payment made out in the name of the Seller or
any other  Diamond  Shamrock  Entity  and to  settle,  adjust  and  forgive  any
Receivable,  subject to the  provisions  of  Section  10.3(b)  hereof.  Upon any
replacement  of the  Collection  Agent,  such power of  attorney in favor of the
replaced Collection Agent will terminate and have no further force or effect.

         (e)  The  Collection  Agent  shall  exercise  reasonable  care  in  the
performance  of its duties under this Agreement and shall use the same degree of
care and skill which it applies to its own property.

         (f)  The Collection  Agent may  delegate  its duties  hereunder to such
Person as may be approved by the Administrative  Agent upon receipt of 120 days'
prior written notice,  such approval not to be unreasonably  withheld,  but such
delegation  shall neither affect the  obligations of the Collection  Agent under
any of the Sale Documents nor the rights of any Purchaser or the  Administrative
Agent under any of the Sale Documents,  including, without limitation, the right
to replace the Collection Agent pursuant to Section 8.2.1.

         SECTION  8.2.1.  Replacement  of   Collection  Agent;  Notification  of
                         Obligors.

         (a)  Upon the occurrence  of any  Event of Liquidation, the Administra-
tive Agent or any Purchaser may upon the provision of three Business  Days prior
written  notice  to DSRM  remove  DSRM as its  Collection  Agent,  appoint a new
Collection  Agent,  take control of the Blocked  Accounts (by  delivering to the
Blocked  Account  Bank  notice  in the  form  attached  to the  Blocked  Account
Agreements),  notify  Obligors  of  the  Aggregate  Ownership  Interest  in  the
Receivables  Assets  and  exercise  all  other  incidents  of  ownership  in the
Receivables Assets.

         (b)  The Administrative  Agent and  the Purchasers shall have the right
to remove any successor Collection Agent  to DSRM and to take the other  actions
described in (a) above at any time in their sole discretion.

         (c)  If DSRM is removed as Collection  Agent,  DSRM shall  transfer and
cause any Person to whom duties of the  Collection  Agent have been delegated by
DSRM pursuant to Section 8.2(f), to transfer, to the Administrative Agent or any
successor  servicer   designated  by  the  Administrative   Agent  all  records,
correspondence and documents  (including  computer tapes or other back-up media)
requested  by the  Administrative  Agent or such  successor  and to permit  such
persons to have access to, and to copy, all data and information used by DSRM in
the  collection,  administration  or  monitoring  of  the  Receivables  and  the
Receivables Assets. In addition,  the Seller or DSRM, as applicable,  will grant

<PAGE>

or  cause  to  be  granted  to  the  Administrative  Agent  or  its  designee an
irrevocable,  non-exclusive license  to use,  without  royalty or payment of any
kind, all software  used by  the Seller,  DSRM or  any  of their  Affiliates, as
applicable,  to  account  for  the  Receivables,  to  the  extent  necessary  to
administer  the Receivables, whether  such software is owned by the Seller, DSRM
or any such Affiliate, as applicable, or is  owned by  others and  used  by  the
Seller, DSRM or any such Affiliate, as applicable, under license agreements with
respect  thereto,  provided, that  should  the  consent of  any licensor  of the
Seller, DSRM or any such Affiliate, as applicable,  to such grant of the license
described herein be required, each  of  the Seller  and DSRM hereby agrees, upon
the  request of  the Administrative Agent, to use its best efforts to obtain the
consent of such  third-party  licensor.   Any  license  granted  hereby shall be
irrevocable, and shall terminate on the date after the Termination Date on which
the Aggregate Ownership Interest shall have been reduced to zero.

                   ARTICLE IX: REPRESENTATIONS AND WARRANTIES

         SECTION  9.1  Representations  and  Warranties  of the  Seller  and the
Collection  Agent.  Each of the  Seller and the  Collection  Agent  makes,  with
respect  to  itself,  the  following   representations  and  warranties  to  the
Purchasers:

         (a)  The Seller is a limited liability company and the Collection Agent
is a corporation duly organized, validly existing and in good standing under the
laws  of  their  respective  jurisdictions  of  organization  and  each  is duly
qualified  in good  standing  in each  jurisdiction  where the  failure to be so
qualified  could  materially   adversely  affect  its  ability  to  perform  its
obligations hereunder.

         (b)  The execution,  delivery  and  performance  by the  Seller and the
Collection Agent of the Sale Documents to which they are party, and the Seller's
use of the proceeds of the Purchases, are within the Seller's and the Collection
Agent's respective company or corporate powers, have been duly authorized by all
necessary  company or  corporate  action,  do not  contravene  (i) the  Seller's
certificate  of  formation  or operating  agreement  or the  Collection  Agent's
certificate of  incorporation  or by-laws or (ii) applicable law or any material
contractual  restriction  binding on the Seller or the Collection  Agent, and do
not result in or require the creation of any lien (other than  pursuant  hereto)
upon or with respect to any of their respective  properties;  and no transaction
contemplated hereby requires compliance with any bulk sales act or similar law.

         (c)  No authorization  or approval or other action by, and no notice to
or filing with, any  governmental  authority or regulatory  body is required for
the due  execution,  delivery and  performance  by the Seller or the  Collection
Agent of the Sale  Documents,  or for the  perfection of  Purchasers'  Aggregate
Ownership  Interest in the Receivables  Assets, or exercise by the Seller of the
Seller's rights and remedies under the Credit Card  Receivables  Sale Agreement,
except for the filing of the financing statements referred to in Section 6.3.4.

<PAGE>

         (d)  The Sale Documents,  when executed and delivered by the Seller and
the Collection  Agent,  will be the legal,  valid and binding  obligation of the
Seller and the Collection  Agent,  respectively,  enforceable in accordance with
their  terms,  except  as  such  enforceability  may be  limited  by  applicable
bankruptcy, insolvency, reorganization,  moratorium or other similar laws now or
hereafter in effect affecting the enforcement of creditors' rights generally and
except as may be limited by general principles of equity (whether  considered in
a suit at law or in equity).

         (e)  There  is  no  pending,  or  to  the   knowledge  of  the  Seller,
threatened,  action or  proceeding affecting the  Seller or the Collection Agent
or any of its  subsidiaries  before any court, governmental agency or arbitrator
which is  reasonably  likely to  materially  adversely affect  (i) its financial
condition or operations or (ii) its ability to perform its obligations under the
Sale Documents, or which is reasonably likely  to affect  the legality, validity
or enforceability of any Sale  Document  or of the Aggregate Ownership Interest.

         (f)  The Seller is the legal and  beneficial  owner of the  Receivables
Assets  free and clear of any lien,  security  interest,  claim or  encumbrance,
except as created by this Agreement,  the Credit Card Receivables Sale Agreement
or the DSRMNB Participation  Agreement;  upon each Purchase,  the Administrative
Agent, on behalf of the applicable Purchaser, will acquire a valid and perfected
first priority  ownership  interest in the  Receivables  Assets then existing or
thereafter  arising and in the Collections with respect thereto,  free and clear
of any lien, security interest, claim or encumbrance,  except as created by this
Agreement,   the  Credit  Card   Receivables   Sale   Agreement  or  the  DSRMNB
Participation Agreement.

         (g)  The information provided by the Seller to the Collection Agent for
use in each  Receivables  Activity  Report  prepared  under  Section 7.4 and all
written  information and Sale Documents furnished or to be furnished at any time
by the Seller to the  Administrative  Agent in connection with this Agreement is
or will be accurate in all material  respects as of their respective  dates, and
no such  document  will contain any untrue  statement of a material fact or will
omit to  state  a  material  fact  necessary  to make  any  such  statement  not
materially misleading.

         (h)  Each  eceivables  Activity Report and any other report prepared by
the Collection Agent pursuant to this Agreement will be accurate in all material
respects as of its date, and no such document will contain any untrue  statement
of a material fact or will omit to state a material  fact  necessary to make any
such report not materially misleading.

         (i)  The chief  place of  business  and chief  executive  office of the
Seller  and the  office  where the  Seller  keeps  its  records  concerning  the
Receivables  and the  Receivables  Assets are located at the  address  specified
below its  signature  to this  Agreement.  The chief place of business and chief
executive  office of each of DSRMNB and DSRM, and the office where they maintain
their respective records concerning the Receivables are located at the addresses
specified on Schedule D.

<PAGE>

         (j)  The  names and  addresses of  the  Blocked Account Banks, together
with  the account  numbers of  the Blocked Accounts, are specified in Schedule C
hereto  (or  at  such other Blocked  Account Banks  and/or  such  other  Blocked
Accounts as have been notified to the Administrative Agent).

         (k)  The  Parent,  the  Seller,  DSRM  and DSRMNB are treating the con-
veyance  of the Aggregate Ownership  Interest in  the Receivables Assets and the
Collections  under  the Sale  Documents  as a sale  for  purposes  of  generally
accepted accounting principles.

         (l)  Each Plan is in  compliance  with all of the  applicable  material
provisions of ERISA and each Plan intended to be qualified  under Section 401(a)
of the  Code is so  qualified.  No Plan has  incurred  an  "accumulated  funding
deficiency"  (within  the  meaning of Section 302 of ERISA or Section 412 of the
Code) whether or not waived. Neither the Seller nor any ERISA Affiliate: (i) has
incurred or expects to incur any liability under Title IV of ERISA, with respect
to any Plan,  which  could give rise to a lien in favor of the PBGC,  other than
liability  for the payment of premiums,  all of which have been timely paid when
due in  accordance  with Section 4007 of ERISA,  (ii) has incurred or expects to
incur any  withdrawal  liability,  within the meaning of Section  4201 of ERISA,
(iii) is subject to any lien under Section 412(n) of the Code or Sections 302(f)
or 4068 of ERISA or arising out of any action  brought  under  Sections  4070 or
4301 of ERISA,  or (iv) is required to provide  security to a Plan under Section
401(a)(29) of the Code. The PBGC has not instituted proceedings to terminate any
Plan  or to  appoint  a  trustee  or  administrator  of  any  such  Plan  and no
circumstances  exist that  constitute  grounds  under  Section  4042 of ERISA to
commence any such proceedings.

         (m)  Each of the Seller, DSRMNB and DSRM has  complied in all  material
respects  with  the  Credit  and   Collection   Policies  with  respect  to  the
Receivables.

         (n)  Prior to a transfer pursuant to the Credit Card  Receivables  Sale
Agreement,  DSRM  shall be the legal  and  beneficial  owner of the  Receivables
Assets sold by DSRM to the Seller pursuant to the Credit Card  Receivables  Sale
Agreement free and clear of any lien, security interest or encumbrance except as
created by the DSRMNB  Participation  Agreement and the Credit Card  Receivables
Sale  Agreement  is  effective  to, and shall,  transfer  to the Seller (and the
Seller shall  acquire)  from DSRM all right,  title and interest of DSRM in each
such Receivable Asset and Collections with respect thereto free and clear of any
lien,  security  interest  or  encumbrance  except  as  created  by  the  DSRMNB
Participation Agreement.

         (o)  The Collection  Agent (i) has completed a review and assessment of
all computer applications (including, but not limited to those of its suppliers,
vendors,  customers  and any third  party  servicers),  which are  related to or
involved  in  the  origination,  collection,  management  or  servicing  of  the
Receivables  (the  "Receivable  Systems")  and (ii)  has  determined  that  such
Receivable  Systems  are (or will be on or before  November  30,  1999)  able to
recognize and perform properly date-sensitive  functions involving certain dates
prior to and any date after December 31, 1999 ("Year 2000 Compliant"). The costs
of  all  assessment,   remediation,  testing  and  integration  related  to  the
Collection  Agent's  plan  for  becoming  Year  2000  Compliant  will  not  have
materially and adversely  affect  the  collectibility  of the Receivables or the
business or operations of the Seller, DSRM, DSRMNB or the Parent.

<PAGE>

                              ARTICLE X: COVENANTS

         SECTION 10.1.  Affirmative  Covenants of the Seller and the  Collection
Agent. Until the Aggregate  Ownership Interest is reduced to zero and no further
Purchases  are to be made,  each of the Seller and the  Collection  Agent  (with
respect  to  itself)  will,  unless  the  Administrative  Agent on behalf of the
Purchaser, has otherwise consented in writing:

         (a)  Comply in all material respects with all applicable  laws,  rules,
regulations  and orders with respect to it, its business and  properties and all
Receivables and Collections.

         (b)  Maintain its existence as a limited liability company (in the case
of the Seller) or corporation (in the case of the Collection Agent) in the state
of  Delaware,  and  qualify  and  remain  qualified  in  good  standing  in each
jurisdiction  where the failure to be so qualified  could  materially  adversely
affect its ability to perform its obligations hereunder.

         (c)  At any reasonable time,  subject to reasonable prior notice of not
less than two Business Days (or one Business Day if the Administrative  Agent is
investigating  a potential  Event of  Liquidation),  permit any Purchaser or its
agents or representatives to visit and inspect any of its properties, to examine
its books of account and other  records and files  relating to  Receivables  and
Receivables Assets (including, without limitation, computer tapes and disks) and
to discuss its  affairs,  business,  finances and accounts as they relate to the
Receivables and Receivables Assets with its officers and employees.

         (d)  Maintain and implement  administrative  and  operating  procedures
(including,  without  limitation,  an ability to recreate records evidencing the
Receivables  and the  Receivables  Assets in the event of the destruction of the
originals  thereof),  and keep and maintain  all records and other  information,
reasonably  necessary  or  advisable  for  the  collection  of  Receivables  and
Receivables Assets (including,  without  limitation,  records adequate to permit
the daily  identification  of Receivables and all Collections and adjustments to
Receivables).

         (e)  At its expense timely and fully perform and comply in all material
respects with all material  provisions and covenants  required to be observed by
the Seller under the contracts related to the Receivables.

         (f)  Keep  the  Seller's places of  business and chief executive office
(if the  Seller has more  than one place  of business)  and  the office where it
keeps the originals of its  records concerning the  Receivables at the addresses
listed  on Schedule D or,  upon 30 days' prior written notice to the Administra-
tive  Agent, at  any other  location in  a  jurisdiction where all UCC financing
statements  and such other  instruments and documents  that may be necessary or 

<PAGE>

desirable  or that the  Administrative  Agent or any  Purchaser  may  reasonably
request to perfect,  protect or evidence the Aggregate  Ownership  Interest have
been filed.

         (g)  Comply in all  material respects  with the  Credit and  Collection
Policies  in  regard  to  each  Receivable  and  any  contract  related  to such
Receivable.

         (h)  File and maintain in effect all  filings,  and take all such other
actions,  as may be  necessary to protect the  validity  and  perfection  of the
Aggregate Ownership Interest in Receivables Assets.

         (i) Cause each Plan to comply with all applicable provisions of ERISA.

         (j)  Not (i) permit any accumulated  funding  deficiency (as defined in
Section  302 of ERISA or Section  412 of the Code) to exist with  respect to any
Plan,  whether or not waived,  (ii) fail, or permit any ERISA Affiliate to fail,
to pay any required  installment or any other payment required under Section 412
of the  Code  with  respect  to any  Plan on or  before  the due  date  for such
installment or other payment, (iii) terminate,  or permit any ERISA Affiliate to
terminate,  any Plan which would  result in any  liability  of the Seller or any
ERISA  Affiliate  under Title IV of ERISA,  (iv) take any action or fail to take
any action, or permit any ERISA Affiliate to take any action or fail to take any
action,  with respect to any multiemployer  plan (as defined in Section 3(37) of
ERISA)  that will  result in  withdrawal  liability  of the  Seller or any ERISA
Affiliate,  or (v)  amend,  or permit  any  ERISA  Affiliate  to  amend,  a Plan
resulting  in an  increase  in  liabilities  such  that the  Seller or any ERISA
Affiliate is required to provide security to such Plan under Section  401(a)(29)
of the Code.

         (k)  Treat the  conveyance of the Aggregate  Ownership  Interest in the
Receivables  Assets and the Collections  under this Agreement and the other Sale
Documents as a sale for purposes of generally accepted accounting principles.

         (l)  At its own  expense, timely  and fully  perform  and comply in all
material  respects with all material  provisions,  covenants and other  promises
required  to be observed by it under the  Cardholder  Agreements  related to the
Receivables,  and  timely and fully  comply in all  material  respects  with the
Credit and  Collection  Policies  in regard to each  Receivable  and the related
Cardholder Agreement.

         (m)  The Seller hereby  acknowledges that the  Purchasers  are entering
into the  transactions  contemplated  by this  Agreement  in  reliance  upon the
Seller's  identity as a separate legal entity from the DSRMNB,  DSRM, the Parent
or any Diamond Shamrock Entity (as defined below). Therefore, from and after the
date of  execution  and  delivery of this  Agreement,  the Seller shall take all
reasonable steps including,  without limitation, all steps that any Purchaser or
the  Administrative  Agent may from time to time reasonably  request to maintain
the  Seller's  identity  as a separate  legal  entity and to make it manifest to
third parties that the Seller is an entity with assets and liabilities  distinct
from  those of DSRMNB,  DSRM,  the Parent  and any  Affiliates  (other  than the
Seller) thereof  (individually a "Diamond  Shamrock Entity" and collectively the

<PAGE>

"Diamond Shamrock  Entities"), and  not just a  division of any Diamond Shamrock
Entity.  Without limiting the generality of the foregoing and in addition to and
consistent with the covenant set forth in paragraph (b) above, the Seller shall:

         (i)    require  that all full-time  employees  of the  Seller  identity
     themselves  as such  and not  as employees  of any  Diamond Shamrock Entity
     (including, without limitation, by means of providing appropriate employees
     with  business  or  identification  cards identifying such employees as the
     Seller's employees);

         (ii)   compensate all  employees,  consultants  and agents for services
     provided to  the  Seller by such  employees, consultants and agents and, to
     the  extent any  employee, consultant  or agent of  the  Seller is  also an
     employee,  consultant or agent of any Diamond Shamrock Entity, allocate the
     compensation of  such employee,  consultant or agent between the Seller and
     such  Diamond Shamrock Entity  on  a  basis  which  reflects  the  services
     rendered to the Seller and such Diamond Shamrock Entity;

         (iii)  clearly  identify  its offices  (by signage or otherwise) as its
     offices;

         (iv)   allocate  all  overhead expenses (including, without limitation,
     telephone  and  other  utility charges) for items shared between the Seller
     and  any Diamond Shamrock  Entity on  the basis of actual use to the extent
     practicable  and,  to  the extent such  allocation is not practicable, on a
     basis reasonably related to actual use;

         (v)    ensure  that all material company actions are duly authorized by
     its Board of Management;

         (vi)   maintain  the  Seller's  books  and  records  separate from  the
     individual books and records of any other Diamond Shamrock Entity;

         (vii)  if  required  by   generally  accepted   accounting  principles,
     prepare its  financial  statements  separately  from those of other Diamond
     Shamrock   Entities   and,   to  the extent  included  in the  consolidated
     financial   statements  of the  Diamond  Shamrock  Entities,  indicate that
     the Seller is  a  limited liability company separate from the other Diamond
     Shamrock Entities included in such consolidated financial statements; and

         (viii)  not commingle funds or other assets of the Seller with those of
     any other Diamond  Shamrock Entity and  not maintain bank accounts or other
     depository  accounts to  which any  other  Diamond  Shamrock  Entity is  an
     account party, into which  any other Diamond Shamrock Entity makes deposits
     or  from  which  any  other  Diamond  Shamrock  etity has the power to make
     withdrawals.

<PAGE>

         (n)  With respect to each Receivable and the Participation  Interest in
each Participating Receivable sold by DSRM to the Seller, pay to DSRM reasonably
equivalent  value in  consideration  of the transfer of such  Receivable  or the
Participation Interest in such Participating Receivable, as applicable.

         (o)   Request  that  DSRM hold in trust  and promptly  turn over to the
Collection Agent any Collections received by DSRM on the Seller's behalf.

         (p)  The Collection Agent will promptly notify the Administrative Agent
in the event the  Collection  Agent  discovers or  determines  that any computer
application  (including  those of its suppliers,  vendors and customers) that is
necessary  for the  origination,  collection,  management,  or  servicing of the
Receivables  will not be Year 2000  Compliant  on or before  November  30, 1999.
Further, the Collection Agent will deliver  simultaneously with any quarterly or
annual financial  statements or reports to be delivered under this Agreement,  a
report  signed by an  appropriate  officer that no material  event,  problems or
conditions  have occurred  which in the opinion of  management  would prevent or
materially delay the Collection Agent's plan to become Year 2000 Compliant.

         SECTION 10.2. Reporting Requirements of the Seller. Until the Aggregate
Ownership  Interest is reduced to zero and no further  Purchases are to be made,
the Seller  will,  unless the  Purchasers  shall  otherwise  consent in writing,
furnish to the  Administrative  Agent for each Purchaser (or, in the case of (f)
below, assist the Collection Agent in furnishing to the Administrative Agent for
each Purchaser):

         (a)  (i)  promptly and in any event  within 30 Business  Days after the
Seller or any ERISA  Affiliate  knows or has  reason to know that a  "reportable
event" (as defined in Section  4043 of ERISA) has  occurred  with respect to any
Plan and for which  notice to the PBGC has not been  waived  by  regulations,  a
statement  of an  officer  of  the  Seller  setting  forth  details  as to  such
reportable  event and the action that the Seller or an ERISA Affiliate  proposes
to  take  with  respect  thereto,  together  with a copy of the  notice  of such
reportable event, if any, given to the PBGC, the Internal Revenue Service or the
Department  of Labor;  (ii)  promptly and in any event  within 10 Business  Days
after receipt  thereof,  a copy of any notice the Seller or any ERISA  Affiliate
may receive from the PBGC relating to the intention of the PBGC to terminate any
Plan or to appoint a trustee to administer any such Plan;  (iii) promptly and in
any event  within 10  Business  Days after a filing  with the PBGC  pursuant  to
Section 412(n) of the Code of a notice of failure to make a required installment
or other payment with respect to a Plan, a statement of an officer of the Seller
setting  forth  details as to such  failure and the action that the Seller or an
ERISA Affiliate  proposes to take with respect thereto,  together with a copy of
such notice  given to the PBGC;  and (iv)  promptly  and in any event  within 30
Business Days after receipt  thereof by the Seller or any ERISA  Affiliate  from
the sponsor of a  multiemployer  plan (as defined in Section 3(37) of ERISA),  a
copy of each notice received by the Seller or any ERISA Affiliate concerning the
imposition of withdrawal  liability or a determination that a multiemployer plan
is, or is expected to be, terminated or reorganized;

<PAGE>

         (b)  as soon as possible and in any event within  three Business  Days
after the occurrence of any Event of Liquidation, written notice of such event;

         (c)  as soon as possible  and in any event  with  five  days  after the
occurrence  thereof,  written  notice of any  material  change in the Credit and
Collection Policies;

         (d)  such other information,  documents,  records or reports respecting
(i) the Receivables as the Purchaser may from time to time reasonably request or
(ii) in connection with any of the  transactions  contemplated by this Agreement
or the administration of this Agreement, the condition or operations,  financial
or otherwise, of the Seller or any of its subsidiaries as the Purchaser may from
time to time reasonably request;

         (e)  together with  each  Receivables Activity Report,  commencing with
the Receivables Activity Report to be delivered in the month of June, 1999,  and
continuing until such time as all Receivables Systems are Year 2000 Compliant, a
report setting in forth in reasonable  detail the status of efforts to cause all
Receivables Systems to be Year 2000 Compliant; and

         (f)  the Receivables  Activity  Report as required  under  Section 7.4,
together with a  certificate  of an officer of the Seller to the effect that all
of the  representations  and  warranties  contained  in Section 9.1 are true and
correct in all material  respects as of the date of delivery of each Receivables
Activity Report.

         SECTION  10.3.  Negative  Covenants  of the Seller  and the  Collection
Agent. Until the Aggregate  Ownership Interest is reduced to zero and no further
Purchases  are to be made,  neither  the Seller  nor the  Collection  Agent,  as
applicable,  will, unless the  Administrative  Agent on behalf of the Purchasers
has otherwise consented in writing:

         (a)  Except as provided  herein, sell,  assign (by  operation of law or
otherwise)  or  otherwise  dispose of, or create or suffer to exist any security
interest,  lien or encumbrance upon or with respect to Receivables,  Receivables
Assets,  Collections  or the  Blocked  Accounts  or assign  any right to receive
income in respect thereof.

         (b)  Amend or otherwise modify the terms of any  Receivable,  or amend,
modify or waive any term or condition of any contract related thereto other than
in accordance with the Credit and Collection Policies and this Agreement.

         (c)  Make any change in the character  of its business or in the Credit
and  Collection  Policies which would,  in either case, be reasonably  likely to
impair the collectibility or credit quality of any Receivables.

         (d)  Add or  terminate  any bank as a Blocked  Account Bank from  those
listed on Schedule C hereto,  or make any change in its instructions to Obligors
regarding  payments to be made to the Seller,  unless the  Purchaser  shall have
received notice of such addition, termination or change, and with respect to the

<PAGE>

addition of any  Blocked  Account, a  Blocked Account Agreement, executed by, as
applicable, the  Seller, DSRM, DSRMNB, the Administrative Agent and such Blocked
Account Bank,  shall have been  delivered to the  Administrative Agent,  in each
case not later  than the  Settlement Date  immediately  following the end of the
calendar quarter in which such event occurred.

         (e)  Deposit  or  otherwise   credit,  or  cause  or  permit  to  be so
deposited or  credited, to any Blocked  Account cash or cash proceeds other than
Collections.

         (f)  Amend or waive  any provision  of the DSRMNB  Participation Agree-
ment,  the  Credit  Card  Receivables  Sale  Agreement  or  the  DSRM  Servicing
Agreement.

         (g)  In the  case  of the  Seller,  enter  into  or be a  party  to any
agreement  or  instrument,  other than in the ordinary  course of business,  and
other than this Agreement,  the Trade Receivables Purchase Agreement, the Credit
Card Receivables Sale Agreement,  the Trade Receivables Sale Agreement, and each
"Revolving  Note" (as defined in the Credit Card  Receivables Sale Agreement and
the Trade Receivables Sale Agreement,  respectively),  or amend, modify or waive
any  provision  in any thereof,  or give any  approval or consent or  permission
provided for in any thereof;

         (h)  In the case of the Seller, engage in any business or enterprise or
enter into any transaction  other than as  contemplated  by this Agreement,  the
Trade Receivables Purchase Agreement, the Credit Card Receivables Sale Agreement
and the Trade Receivables Sale Agreement; or

         (i)  Amend the Certificate of Formation or Limited Liability  Agreement
of the Seller in any manner  which  requires  unanimous  consent of the Board of
Management thereof or which causes any other material change therein.

           ARTICLE XI: INDEMNIFICATIONS; INCREASED COSTS; TAX MATTERS

         SECTION 11.1.  Indemnification  by Seller of Purchasers,  etc.  Without
limiting any other rights which the  Purchasers,  the  Administrative  Agent and
their respective officers, directors,  employees, agents and affiliates may have
hereunder or under  applicable law, the Seller hereby  indemnifies  such parties
(each an "Indemnified  Person") and holds them harmless from and against any and
all  damages,  losses,  claims,  liabilities  and  related  costs  and  expenses
(including reasonable attorneys' fees and disbursements) incurred by any of them
arising out of or resulting from this Agreement or the purchase by any Purchaser
of any Ownership Interest in Receivables, including, without limitation:

         (i)      the reliance by the Administrative Agent  or the Purchasers on
     any representation or  warranty made by the Seller (or any of its officers)
     under or in connection with this Agreement or any Sale Document,  which was
     incorrect in any material respect when made;

<PAGE>

         (ii)     the failure  by the Seller or the  Collection  Agent to comply
with any  covenant  set  forth  in this Agreement, whether as Seller, Collection
Agent or otherwise;

         (iii)    the  failure  to  vest  and  maintain  in the Purchaser, or to
transfer  to the Purchasers,  legal and equitable title to, and ownership of, an
undivided  percentage  ownership  interest  (to  the  extent  of  the  Ownership
Interest) in  the Receivables  Assets, free and clear of any security  interest,
lien,  claim or  encumbrance other than any in favor of the Administrative Agent
or any Purchaser that may be created under this Agreement;

         (iv)     the  transfer  by the Seller of an undivided percentage owner-
ship interest in any Receivables other than the Ownership Interest;

         (v)      the Seller's use of proceeds of the Purchases;

         (vi)     the  failure  timely  to  file  financing  statements or other
similar  instruments  or  documents  under  the  Uniform  Commercial Code of any
applicable   jurisdiction   or   other  applicable  laws  with  respect  to  any
Receivables, whether at the time of a Purchase or otherwise;

         (vii)    the return  or transfer by the Collection Agent of any portion
of  Collections  allocable  to the Ownership Interest to the Seller or any other
person for any reason whatsoever;

         (viii)   any dispute, claim,  offset or  defense of any  Obligor to the
payment of any Receivable (including a defense based on such Receivable's or the
related  contract's  not being a legal,  valid and  binding  obligation  of such
Obligor enforceable against it in accordance with its terms), or any other claim
resulting  from the sale,  use,  operation  or  ownership  of or  defects  in or
breaches of warranties with respect to, the merchandise or services  relating to
such  Receivable  or the  furnishing or failure to furnish such  merchandise  or
services;

         (ix)     the  Seller's  failure  to  pay  when due any taxes (including
sales,  excise  or  personal  property  taxes)  payable  in connection with the 
Receivables;

         (x)      the commingling of Collections with other funds of the Seller;
or

         (xi)     the  failure by the Seller to comply with any applicable  law,
rule or regulation with respect to any Receivable, or the  nonconformity  of any
Receivable with any such applicable law, rule or regulation.

If and to the extent that the foregoing undertaking may be unenforceable for any
reason, the Seller hereby agrees to make the maximum contribution to the payment
of the amounts  indemnified  against in this Section which is permissible  under
applicable  law. The  obligation of Seller to indemnify as set forth above shall
not include damages,  losses, claims,  liabilities or related costs or expenses,
arising  solely  from  (i)  except  as  otherwise  provided  in this  Agreement,
Receivables  becoming  Defaulted  Receivables  pursuant clause (2) or (3) of the
definition  of  "Defaulted  Receivable,",  or  (ii) gross negligence  or willful
misconduct of an Indemnified Person seeking indemnification.

<PAGE>

         SECTION 11.2.  Indemnification  Due to Failure to Consummate  Purchase.
The Seller will  indemnify the Purchaser on demand and hold it harmless  against
all costs (including, without limitation, breakage costs) and expenses resulting
from any failure by the Seller (i) to consummate a Purchase  after the Purchaser
has  accepted an offer from the Seller to make such  Purchase or (ii) to fulfill
its  obligations  pursuant to Section 6.2, and the Purchaser  will indemnify the
Seller on demand and hold it  harmless  against  all costs  (including,  without
limitation,  breakage costs) and expenses  resulting from any failure by (i) the
Conduit  Purchaser to pay the required  purchase  price after it has accepted an
offer to Purchase  from the Seller,  (ii) the Conduit  Purchaser  to fulfill its
obligations  pursuant to Section 6.2 or (iii) the Back-Stop Purchaser to pay the
required  purchase  price  after a  proper  request  from  the  Seller  for such
purchase..

         SECTION  11.3.  Increased Costs. If due to either: (i) the introduction
of or any change (including, without limitation, any change by way of imposition
or  increase  of  reserve  requirements)  in or in  the  interpretation  by  any
governmental or regulatory  authority or agency of any law or regulation  (other
than  laws or  regulations  relating  to taxes)  or (ii) the  compliance  by any
Purchaser or any lender under any Liquidity Facility or Credit Facility (each, a
"Conduit  Lender")  with any guideline or request from any central bank or other
governmental authority (whether or not having the force of law), (1) there shall
be an increase in the cost to the Purchaser or such Conduit Lender of accepting,
funding or maintaining any Purchase hereunder, (2) there shall be a reduction in
the amount  receivable  with  regard to any  Purchase or (3) such  Purchaser  or
Conduit  Lender shall be required to make a payment  calculated  by reference to
the  Purchases  made  hereunder  or Purchase  Discount  received by it, then the
Seller shall, from time to time, within 30 days from the date the Administrative
Agent makes demand therefor, pay the Administrative Agent for the account of the
applicable Purchaser or Conduit Lender (as a third party beneficiary in the case
of any Conduit Lender),  that portion of such increased costs incurred,  amounts
not received or required  payment made or to be made,  which the  Administrative
Agent   reasonably   determines  is  attributable  to  accepting,   funding  and
maintaining   any  Purchase   hereunder.   In  determining   such  amount,   the
Administrative  Agent may use any reasonable  averaging and attribution methods.
The  applicable  Purchaser  or  Conduit  Lender  shall  submit  to the  Seller a
certificate  as to the existence and amounts of such increased  costs  incurred,
amounts not received or receivable or required payment made or to be made, which
certificate  shall, in the absence of manifest error, be  presumptively  correct
for all  purposes.  Any  Affected  Party that  incurs  such  increased  costs as
described in this Section 11.3 shall use its reasonable efforts (consistent with
its internal policy and legal and regulatory restrictions) to take such steps as
would eliminate or reduce the amount of such increased costs; provided,  that no
such steps shall be required to be taken if, in the reasonable  judgment of such
Affected Party, such steps would be disadvantageous to such Affected Party.

         SECTION  11.4.  Increased Capital. If either (i) the introduction of or
any  change  in  or  in  the  interpretation  by  any governmental or regulatory
authority  or  agency  of  any  law or regulation or (ii) compliance by any Pur-
chaser, the Administrative Agent, any Conduit Lender or any  parent  company  of

<PAGE>

the foregoing (each an "Affected Party") with any guideline or request  from any
central bank or other governmental authority (whether or not having the force of
law)  affects  or  would affect the amount of capital required or expected to be
maintained by such Affected Party or such  Affected Party reasonably  determines
that the amount of such  capital  is increased by or based upon the existence of
any  Purchaser's agreement to make or  maintain  or  to consider making or main-
taining Purchases  hereunder  and  other similar agreements or facilities, then,
within 30 days from the date such  Affected  Party  or the  Administrative Agent
makes demand  therefor, the  Seller shall immediately pay to such Affected Party
(as a third party beneficiary, in the case of any  Affected  Party  other than a
Purchaser  or  the Administrative  Agent)  or  the  Administrative Agent for the
account of  such Affected Party from time to time, as specified by such Affected
Party or the  Administrative Agent,  additional amounts sufficient to compensate
such Affected  Party  in light of  such circumstances,  to the  extent that such
Affected  Party or the  Administrative Agent  on behalf  of such  Affected Party
reasonably  determines such increase in capital to be allocable to the existence
any agreement  of a Purchaser hereunder.  A certificate  as to the existence and
amounts of  such increases shall  be submitted  to the  Seller by  such Affected
Party  or the Administrative Agent,  shall, in the absence of manifest error, be
presumptively  correct for all purposes.  Any Affected Party that is entitled to
compensation  for increases  in capital  as described in this Section 11.4 shall
use its  reasonable  efforts (consistent  with its internal policy and legal and
regulatory  restrictions) to  take such  steps as  would eliminate or reduce the
amount of  such compensation;  provided, that no such steps shall be required to
be taken if, in the reasonable judgment of such Affected party, such steps would
be disadvantageous to such Affected Party.

         SECTION  11.5.  Taxes.  (a) Any and all  payments and deposits required
to be made hereunder or under any instrument  delivered  hereunder by the Seller
shall be made,  in  accordance  with Section 7.2,  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 an Affected  Party,  net income taxes that are imposed by the United
States and  franchise  taxes and similar  taxes and net income  taxes,  that are
imposed on such Affected  Party by the state or foreign  jurisdiction  under the
laws of which such Affected Party is organized or in which it is otherwise doing
business or any  political  subdivision  thereof (all such  non-excluded  taxes,
levies,  imposts,  deductions,   charges,  withholdings  and  liabilities  being
hereinafter referred to as "Taxes"). If the Seller or the Collection Agent shall
be  required  by law to deduct any Taxes  from or in respect of any sum  payable
hereunder to any Affected Party, (i) the Seller shall make an additional payment
to such  Affected  Party,  in an amount  sufficient  so that,  after  making all
required deductions  (including deductions applicable to additional sums payable
under this Section  11.5),  such Affected  Party receives an amount equal to the
sum it would have received had no such  deductions been made, (ii) the Seller or
the Collection  Agent,  as the case may be, shall make such deductions and (iii)
the  Seller  or the  Collection  Agent,  as the case may be,  shall pay the full
amount  deducted  to the  relevant  taxation  authority  or other  authority  in
accordance with applicable law.

         (b)  In addition,  the Seller agrees to pay any present or future stamp
or other  documentary  taxes or any other  excise or property  taxes  charges or
similar  levies  which  arise  from  any  payment  made  hereunder  or under any
<PAGE>

instrument  delivered hereunder or from the execution,  delivery or registration
of, or otherwise  with respect to, this  Agreement or any  instrument  delivered
hereunder (hereinafter referred to as "Other Taxes").

         (c)  The Seller will indemnify  each  Affected  Party (as a third party
beneficiary,  in the case of any  Affected  Party other than a Purchaser  or the
Administrative  Agent) for the full amount of Taxes or Other  Taxes  (including,
without  limitation,  any Taxes or Other Taxes  imposed by any  jurisdiction  on
amounts payable under this Section  11.5(c)) paid by such Affected Party 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.  This  indemnification  shall be made within 30 days from the
date the Affected Party makes written demand  therefor.  A certificate as to the
existence and amount of such indemnification shall be submitted to the Seller by
such Affected Party,  setting forth the calculation  thereof,  and shall, in the
absence of manifest error, be presumptively correct for all purposes.

         (d)  Within 30 days after the date of any payment of Taxes,  the Seller
will furnish to the  Administrative  Agent the original or a certified copy of a
receipt evidencing payment thereof.

         (e)  Any  Affected  Party  that  is  entitled  to  the  payment  of any
additional amount pursuant to this Section 11.5 shall use its reasonable efforts
(consistent  with its internal policy and legal and regulatory  restrictions) to
take such steps as would  eliminate  or reduce the amount of payment;  provided,
that no such steps shall be required to be taken if, in the reasonable  judgment
of such Affected  party,  such steps would be  disadvantageous  to such Affected
Party.

         SECTION 11.6. Notices. Each Purchaser shall notify the Seller within 30
Business  Days  of its  knowledge  of a  claim  for  which  it  intends  to seek
indemnification  under Section 11.1 or reimbursement under Section 11.5 from the
Seller.  The  Seller  shall  provide   reasonable   assistance  to  the  parties
indemnified under Section 11.1, to the extent  reasonably  requested by them, in
any action, suit or proceeding brought by or against them in connection with the
indemnification  granted  herein.  The Seller  hereby  agrees that if it assumes
control of the defense in any action,  suit or proceeding  brought by or against
any Indemnified Party, the outcome of any such proceeding will be subject to the
indemnification provisions of Article XI of this Agreement. Each Purchaser shall
notify the Seller of a claim for which it  intends to seek  reimbursement  under
Sections  11.3 or 11.4 from the Seller;  provided,  however,  that in connection
with any such notice, the applicable  Purchaser shall not be entitled to receive
reimbursement in respect of any otherwise reimbursable amount under Section 11.3
or 11.4 to the extent that such amount was  incurred  more than 60 days prior to
the date of such notice.

                           ARTICLE XII: MISCELLANEOUS

         SECTION  12.1.  Amendments,  Etc. No  amendment  or  waiver of, or con-
sent to the Seller's  departure  from, any provision of this Agreement  shall be
effective unless it is in writing and signed by the parties hereto and then such

<PAGE>

amendment,  waiver or consent shall be effective  only in the specific  instance
and for the specific purpose for which it was given.

         SECTION  12.2.  Notices,  Etc.  All  notices  and other  communications
provided for hereunder shall,  unless otherwise stated herein,  be in writing or
by a  telecommunications  device capable of creating a written record, and sent,
as to each  party  hereto,  at its  address  set  forth  under  its  name on the
signature pages hereto,  or at such other address as shall be designated by such
party in a written  notice to the other  parties  hereto.  All such  notices and
communications shall be effective (a) upon personal delivery thereof, including,
but not limited to,  delivery by overnight  mail and courier  service,  (b) upon
receipt  after it shall have been mailed by United  States mail,  first class or
certified or registered,  with postage prepaid,  or (c) in the case of notice by
such a telecommunications device, when properly transmitted, except that notices
and  communications  to an Purchaser  pursuant to Section 6.2 shall be effective
when received by such Purchaser.

         SECTION 12.3.  [Reserved].

         SECTION  12.4.  No  Waiver;  Remedies.  No  failure  on the part of the
Administrative  Agent or any Purchaser to exercise,  and no delay in exercising,
any  right  hereunder  or under  any Sale  Document  shall  operate  as a waiver
thereof;  nor  shall any  single  or  partial  exercise  of any right  hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right.  The remedies  herein  provided are  cumulative  and not exclusive of any
remedies provided by law.

         SECTION 12.5. Binding Effect;  Assignability.  (a) This Agreement shall
be binding  upon and inure to the benefit of the  Seller,  each  Purchaser,  the
Administrative  Agent and their respective  successors and assigns,  except that
the Seller  shall not have the right to assign any interest  herein  without the
prior written consent of each Purchaser and the  Administrative  Agent,  and the
Purchaser  shall not have the  right to assign  any  interest  herein  except in
accordance with paragraph (b) below.  This Agreement shall create and constitute
the continuing  obligation of the parties  hereto in accordance  with its terms,
and shall  remain in full  force and  effect  until  such time as the  Ownership
Interest is reduced to zero and no further  Purchases are to be made;  provided,
however, that rights and remedies of the Purchasers and the Administrative Agent
under  Article XI and  Section  5.3 and the  provisions  of Section  12.11 shall
survive any termination of this Agreement.

         (b)  The Conduit Purchaser may assign its interests  hereunder  without
the  consent of the  Seller,  to CIBC,  any  affiliate  of CIBC,  any  financial
institution  providing  a Liquidity  Facility or Credit  Facility or any vehicle
organized by CIBC or by any  affiliate  thereof.  Any  Purchaser  may assign its
interests  hereunder  to any other  Person  with the prior  written  consent  of
Seller, such consent not to be unreasonably  withheld.  Upon any assignment by a
Purchaser,  the assignee shall become the owner of the  Purchaser's  interest in
the Receivables  Assets purchased  hereunder for all purposes of this Agreement.
Upon  any  assignment,  the  assignee  thereof  shall  have all the  rights  and
obligations  of a Purchaser  under this  Agreement,  and shall be subject to the
same terms and  conditions  of this  Agreement.  The  parties to this  Agreement
acknowledge that the Conduit  Purchaser  has  assigned and shall be permitted to

<PAGE>

continue  to assign  (without  consent)  to CIBC,  as  collateral  agent for the
benefit of the holder of the debt instruments issued by the Conduit Purchaser, a
security interest in all of the Conduit Purchaser's right, title and interest in
and to, among other things,  all rights of the Conduit  Purchaser in and to this
Agreement  and  other  securitization  agreements  entered  into by the  Conduit
Purchaser  with other sellers and the assets  purchased from or assigned by such
other sellers pursuant thereto.

         SECTION  12.6.  GOVERNING  LAW.  THIS  AGREEMENT  SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

         SECTION 12.7. Construction of the Agreement.  The parties hereto intend
that the  conveyance  of the  Ownership  Interest in  Receivables  Assets by the
Seller to the  Purchasers  shall be treated as sales for  purposes of  generally
accepted accounting  principles.  If, despite such intention, a determination is
made that such  transactions  shall not be treated as sales, then this Agreement
shall be  interpreted  to constitute a security  agreement and the  transactions
effected  hereby  shall be  deemed to  constitute  a  secured  financing  by the
Purchasers  to the Seller under  applicable  law. For such  purpose,  the Seller
hereby grants to the  Administrative  Agent for the benefit of the  Purchasers a
continuing  security  interest to the extent of such  Ownership  Interest in the
Receivables  Assets and  Collections to secure the  obligations of the Seller to
the Purchasers hereunder.

         SECTION 12.8. No Proceedings.  The Seller, the Back-Stop Purchaser, the
Administrative  Agent and the  Collection  Agent each hereby agrees that it will
not  institute  against the Conduit  Purchaser any  bankruptcy,  reorganization,
insolvency  or  similar  proceeding  under any  federal or state  bankruptcy  or
similar law, for one year and a day after the latest maturing  commercial  paper
note or other rated indebtedness  (whether or not issued to fund the purchase or
maintenance of the Ownership Interest hereunder) issued by the Conduit Purchaser
is paid.

         SECTION 12.9.  Confidentiality.  The Purchasers and the  Administrative
Agent agree to maintain the  confidentiality  of any  information  regarding the
Seller, the Collection Agent or the Receivables  obtained in accordance with the
terms of this Agreement  which is not publicly  available,  but any Purchaser or
the  Administrative  Agent may reveal such information (a) to applicable  rating
agencies, liquidity providers and credit providers, provided that such liquidity
providers and credit  providers  agree to maintain the  confidentiality  of such
information on the same terms that Purchaser is required to do so hereunder, (b)
as reasonably  necessary or appropriate in connection with the administration or
enforcement  of this  Agreement,  (c) as reasonably  necessary or appropriate in
connection with its funding of purchases under this Agreement, provided that any
private third parties to whom such  information  is disclosed  agree to maintain
the  confidentiality  of such  information on the same terms as the Purchaser is
required to do so  hereunder,  (d) as required  by law,  government  regulation,
court proceeding or subpoena or (e) to bank regulatory agencies and examiners.

<PAGE>

         SECTION  12.10.  Execution  in  Counterparts.  This  Agreement  may  be
executed  in any  number of  counterparts  and by  different  parties  hereto in
separate  counterparts,  each of which when so executed shall be deemed to be an
original and all of which when taken together shall  constitute one and the same
agreement.

         SECTION 12.11.  Severability  Clause.  Any provisions of this Agreement
which are prohibited or  unenforceable  in any  jurisdiction  shall,  as to such
jurisdiction,   be   ineffective   to  the   extent  of  such   prohibition   or
unenforceability  without  invalidating the remaining provisions hereof, and any
such prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

         SECTION 12.12.  SUBMISSION TO JURISDICTION; APPOINTMENT OF
AGENT TO ACCEPT SERVICE OF PROCESS.

         (A)  THE  SELLER  AND  THE  COLLECTION   AGENT  HEREBY  SUBMIT  TO  THE
NONEXCLUSIVE  JURISDICTION  OF THE  COURTS  OF THE  STATE OF NEW YORK AND OF ANY
FEDERAL COURT  LOCATED IN SUCH STATE IN ANY ACTION OR PROCEEDING  ARISING OUT OF
OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS  CONTEMPLATED  HEREBY. EACH OF
THE SELLER AND THE COLLECTION  AGENT  IRREVOCABLY  WAIVES ANY OBJECTION WHICH IT
MAY HAVE TO THE  LAYING OF VENUE OF ANY SUCH  PROCEEDING  AND ANY CLAIM THAT ANY
SUCH PROCEEDING HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.

         (B)  EACH  OF THE  SELLER  AND THE  COLLECTION  AGENT  HAS  IRREVOCABLY
APPOINTED CT CORPORATION SYSTEM AS ITS AGENT TO RECEIVE,  ACCEPT AND ACKNOWLEDGE
FOR AND ON ITS BEHALF,  SERVICE OF ANY AND ALL LEGAL PROCESS,  SUMMONS,  NOTICES
AND  DOCUMENTS  WHICH MAY BE SERVED IN ANY SUCH  PROCEEDING  BROUGHT IN ANY SUCH
COURT WHICH MAY BE MADE ON SUCH AGENT.  IF FOR ANY REASON SUCH AGENT SHALL CEASE
TO BE  AVAILABLE  TO ACT AS SUCH,  EACH OF THE SELLER AND THE  COLLECTION  AGENT
AGREES TO DESIGNATE A NEW AGENT IN THE CITY OF NEW YORK ON THE TERMS AND FOR THE
PURPOSES OF THIS SECTION 12.11 SATISFACTORY TO THE PURCHASER.

         IN WITNESS WHEREOF, the parties have caused this Agreement to be signed
by their duly authorized  officers as of the date set forth on the cover page of
this Agreement.

                           COYOTE FUNDING, L.L.C.
                             as Seller


                           By:    /s/ Steve Blank
                              Name:   Steve Blank
                              Title:  Vice President and Treasurer

                           Address:     6000 North Loop 1604 West
                                        San Antonio, Texas 78249-1112
                           Attention:   Treasurer
                           Telephone No.: (210) 592-2000
                           Facsimile No.: (210) 592-2010


                           DIAMOND SHAMROCK REFINING AND
                           MARKETING COMPANY
                             as Collection Agent


                           By:    /s/ Steve Blank
                              Name:   Steve Blank
                              Title:  Vice President and Treasurer

                           Address:     6000 North Loop 1604 West
                                        San Antonio, Texas 78249-1112
                           Attention:   Treasurer
                           Telephone No.: (210) 592-2000
                           Facsimile No.: (210) 592-2010



                           ASSET SECURITIZATION COOPERATIVE
                            CORPORATION,
                              as Conduit Purchaser


                           By:   /s/ Dean Kurdyla
                              Name:  Dean Kurdyla
                              Title: Controller

                           Address:     425 Lexington Avenue
                                        New York, New York  10017
                           Attention:   Asset Securitization Group
                           Telecopier:  (212) 856-3643


                           CANADIAN IMPERIAL BANK OF COMMERCE,
                             as Back-Stop Purchaser


                           By:    /s/ John Gevlin
                              Name:   John Gevlin
                              Title:  Authorized Signatory

                           Address:     425 Lexington Avenue
                                        New York, New York  10017
                           Attention:   Asset Securitization Group
                           Telecopier:  (212) 856-3643


                           CANADIAN IMPERIAL BANK OF COMMERCE,
                             as Administrative Agent


                           By:    /s/ John Gevlin
                              Name:   John Gevlin
                              Title:  Authorized Signatory

                           Address:     425 Lexington Avenue
                                        New York, New York  10017
                           Attention:   Asset Securitization Group
                           Telecopier:  (212) 856-3643

                                                                 EXECUTION COPY



                      TRADE RECEIVABLES PURCHASE AGREEMENT

                                      among

                             COYOTE FUNDING, L.L.C.
                                   as Seller,

                 DIAMOND SHAMROCK REFINING AND MARKETING COMPANY
                              as Collection Agent,

                  ASSET SECURITIZATION COOPERATIVE CORPORATION
                              as Conduit Purchaser,

                       CANADIAN IMPERIAL BANK OF COMMERCE
               as Back-Stop Purchaser and as Administrative Agent


                           Dated as of March 29, 1999

<PAGE>

                                TABLE OF CONTENTS

Article                                                                    Page
- -------                                                                    ----

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

ARTICLE II:  PURCHASE FACILITY................................................14
        SECTION 2.1.  Purchase Facility.......................................14
        SECTION 2.2.  Extension or Acceleration of the Termination Date.......14

ARTICLE III:  SALE OF OWNERSHIP INTEREST......................................15
        SECTION 3.1.  Determination of Ownership Interest.....................15
        SECTION 3.2.  Frequency of Determining Aggregate Ownership
                      Interest................................................16
        SECTION 3.3.  Maximum Ownership Interest..............................17
        SECTION 3.4.  Lock Boxes, Blocked Accounts and Collections............17

ARTICLE IV:  PURCHASE PRICE...................................................18
        SECTION 4.1.  Determination of Cash Component of Purchase Price.......18
        SECTION 4.2.  Determination of Deferred Payment Component of
                      Purchase Price..........................................18

ARTICLE V:  FEES AND EXPENSES.................................................18
        SECTION 5.1.  Settlement Date Payments................................18
             SECTION 5.1.1  Purchase Discount.................................19
             SECTION 5.1.2.  Purchase Premium.................................19
             SECTION 5.1.3.  Operating Expense Fee............................19
             SECTION 5.1.4.  Collection Agent Fee.............................20
             SECTION 5.1.5.  Administration Fee...............................20
        SECTION 5.2.  Unused Facility Fee.....................................20
        SECTION 5.3.  Structuring Fee.........................................20
        SECTION 5.4.  Legal Fees and Expenses.................................20
        SECTION 5.5.  Interest on Unpaid Amounts..............................21
        SECTION 5.6.  Audits..................................................21

ARTICLE VI:  PURCHASE PROCEDURES..............................................21
        SECTION 6.1.  Types of Purchases......................................21
        SECTION 6.2.  Notice Requirements.....................................21
        SECTION 6.3.  Conditions Precedent to Initial Purchase................22
             SECTION 6.3.1.  Membership in the Purchaser......................22
             SECTION 6.3.2.  Fees.............................................22
             SECTION 6.3.3.  Absence of Liens.................................22
             SECTION 6.3.4.  Financing Statements.............................22
             SECTION 6.3.5.  Trade Receivables Sale Agreement; Transfer 
                             Agreement........................................23
             SECTION 6.3.6.  Receivables Activity Report......................23
<PAGE>
             SECTION 6.3.7.  Resolutions......................................23
             SECTION 6.3.8.  Legal Opinion of Seller's and DSRM's and the 
                             Parents's Counsel................................23
             SECTION 6.3.9.  Good Standing Certificates.......................23
             SECTION 6.3.10.  Performance Support Agreement...................23
             SECTION 6.3.11.  Lock-Box and Blocked Account Agreements.........23
        SECTION 6.4.  Condition Precedent to All Incremental Purchases........24
        SECTION 6.5.  Conditions Precedent to All Purchases...................24
             SECTION 6.5.1.  Representations and Covenants....................24
             SECTION 6.5.2.  Notice...........................................24
             SECTION 6.5.3.  Other Documents..................................24

ARTICLE VII:  SETTLEMENT PROCEDURES...........................................24
        SECTION 7.1.  Settlement Date.........................................24
        SECTION 7.2.  Application of Collections..............................25
             SECTION 7.2.1.  Application of Collections on Days That Are 
                             Not Settlement Dates.............................25
             SECTION 7.2.2.  Application of Collections on Settlement
                             Dates............................................25
        SECTION 7.3.  Adjustments, Etc........................................26
        SECTION 7.4.  Receivables Activity Report.............................27

ARTICLE VIII: ADMINISTRATIVE AGENT AND COLLECTION AGENT.......................27
        SECTION 8.1.  Appointment of Administrative Agent.....................27
             SECTION 8.1.1  Replacement of Administrative Agent...............27
        SECTION 8.2.  Appointment of Collection Agent.........................27
             SECTION 8.2.1.  Replacement of Collection Agent; Notification
                             of Obligors......................................28

ARTICLE IX:  REPRESENTATIONS AND WARRANTIES...................................29
        SECTION 9.1.  Representations and Warranties of the Seller and
                      the Collection Agent....................................29

ARTICLE X:  COVENANTS.........................................................32
        SECTION 10.1.  Affirmative Covenants of the Seller and the
               Collection Agent...............................................32
        SECTION 10.2.  Reporting Requirements of the Seller...................35
        SECTION 10.3.  Negative Covenants of the Seller and the
               Collection Agent...............................................36

<PAGE>

ARTICLE XI:  INDEMNIFICATIONS; INCREASED COSTS................................38
        SECTION 11.1.  Indemnification by Seller of the Purchasers, etc.......38
        SECTION 11.2.  Indemnification Due to Failure to Consummate
                       Purchase...............................................39
        SECTION 11.3.  Increased Costs........................................40
        SECTION 11.4.  Increased Capital......................................40
        SECTION 11.5.  Taxes..................................................41
        SECTION 11.6.  Notices................................................42

ARTICLE XII:  MISCELLANEOUS...................................................43
        SECTION 12.1.  Amendments, Etc........................................43
        SECTION 12.2.  Notices, Etc...........................................43
        SECTION 12.3.  [Reserved].............................................43
        SECTION 12.4.  No Waiver; Remedies....................................43
        SECTION 12.5.  Binding Effect; Assignability..........................43
        SECTION 12.6.  GOVERNING LAW..........................................44
        SECTION 12.7.  Construction of the Agreement..........................44
        SECTION 12.8.  No Proceedings.........................................44
        SECTION 12.9.  Confidentiality........................................44
        SECTION 12.10.  Execution in Counterparts.............................45
        SECTION 12.11.  Severability Clause...................................45
        SECTION 12.12.  SUBMISSION TO JURISDICTION; APPOINTMENT OF AGENT
                        TO ACCEPT SERVICE OF PROCESS..........................45
<PAGE>

                                    EXHIBITS

Exhibit A    Form of Notice for Initial and Incremental Purchases

Exhibit B-1  Form of Notice of Election Not to Make Reinvestment Purchase

Exhibit B-2  Form of Notice of Election to Suspend Purchases and of Payment of
             Reduction in Investment

Exhibit C    Form of Membership Agreement

Exhibit D    Form of Lock-Box Agreement

Exhibit E    Form of Blocked Account Agreement

Exhibit F    Form of Receivables Activity Report


                                    SCHEDULES

Schedule A   Special Concentration Limits

Schedule B   Credit and Collection Policies

Schedule C   List of Lock-Box Banks

Schedule D   List of Blocked Account Banks

Schedule E   List of Addresses for the Seller and the Originators

<PAGE>

         This TRADE RECEIVABLES PURCHASE AGREEMENT (this "Agreement") is entered
into as of March 29,  1999 by and  among  COYOTE  FUNDING,  L.L.C.,  a  Delaware
limited liability company,  as Seller (the "Seller"),  DIAMOND SHAMROCK REFINING
AND MARKETING COMPANY ("DSRM", but when acting in its capacity as the collection
agent  hereunder,  the "Collection  Agent"),  ASSET  SECURITIZATION  COOPERATIVE
CORPORATION,  ("ASCC",  or the "Conduit  Purchaser"),  CANADIAN IMPERIAL BANK OF
COMMERCE,  ("CIBC",  and together with its successors and assigns, the Back-Stop
Purchaser"), and CIBC as agent (the "Administrative Agent") for the Purchasers.

                             ARTICLE I: DEFINITIONS

         As used in this Agreement, the following terms shall have the specified
meanings and shall  include in the singular  number the plural and in the plural
number the singular:

         "Administration  Fee" means the  percentage  used to determine  the fee
payable by the Seller to the Back-Stop Purchaser, as described in Section 5.1.5.

         "Administrative Agent" means CIBC and any replacement thereof
under Section 8.1.1.

         "Affected Party" has the meaning specified in Section 11.4.

         "Affiliate" means, as to any Person, any other Person that, directly or
indirectly,  is in control of, is controlled by or is under common  control with
such Person or is a director or officer of such Person.

         "Aggregate  Charge-Offs"  means,  for any  date of  determination,  the
aggregate  outstanding balance of all Receivables that became Charge-Offs during
the preceding period of 12 consecutive calendar months.

         "Aggregate  Ownership  Interest"  means  at  any  time,  the  Ownership
Interests of all Purchasers at such time.

         "Agreement" means this Trade Receivables Purchase Agreement,  as it may
be amended, restated, supplemented or otherwise modified from time to time.

         "Alternative Rate" for any Settlement Period means an interest rate per
annum equal to the sum of (a) the LIBO Rate (Reserve  Adjusted)  plus (b) 0.50%;
provided,  however,  that (i) in the case of any Settlement  Period of less than
one month,  the LIBO Rate  (Reserve  Adjusted)  under  clause (a) above shall be
calculated as if such  Settlement  Period has a duration of one month unless the
Administrative  Agent and  the Collection Agent agree in writing to a different 

<PAGE>

rate;  (ii) if it shall  become  unlawful for CIBC to obtain funds in the London
interbank  market in order to make,  fund or maintain any Purchase  hereunder or
deposits in dollars (in the applicable amounts) are not being offered by CIBC in
the London  interbank  market  then the  "Alternative  Rate" for any  Settlement
Period shall be  calculated  using an interest  rate per annum equal to the Base
Rate;  and  (iii)  following  the  occurrence  of an Event of  Liquidation,  the
"Alternative  Rate" for each Payment  Period shall be the sum of the  applicable
interest rate per annum  determined  pursuant to provisions set forth above plus
2.0% per annum.

         "Back-Stop Purchaser" means CIBC and its successors and assigns.

         "Base Rate"  means,  on any date,  a  fluctuating  rate of interest per
annum equal to the higher of (a) the Prime Rate and (b) the  Federal  Funds Rate
plus 1.0%.

         "Blocked Account" means any blocked account  established in the name of
the Seller to which the Collection  Agent shall deposit  Collections or to which
the Collection Agent shall cause  Collections to be  electronically  transferred
directly in accordance with the terms of this Agreement.

         "Blocked Account  Agreement" means the agreement in the form of Exhibit
E hereto executed among the Seller, DSRM, the Administrative Agent and a Blocked
Account Bank.

         "Blocked Account Bank" means any bank listed on Schedule D.

         "Business  Day" means a day other than a Saturday  or a Sunday on which
each of the Conduit  Purchaser,  the  Back-Stop  Purchaser,  the  Administrative
Agent, the Collection Agent and the Seller is open for business.

         "Charge-Off"  means any  receivable  that has been or should  have been
charged-off in conformity with the then current Credit and Collection Policies.

         "Charge-Off Ratio" means, as of any date of determination,  a fraction,
expressed as a percentage,  the numerator of which is the Aggregate  Charge-Offs
and the  denominator  of  which  is the  aggregate  outstanding  balance  of the
Receivables as of the last day of the month most recently completed.

         "CIBC" means Canadian Imperial Bank of Commerce.

         "Code" means the Internal Revenue Code of 1986, as amended.
<PAGE>
         "Collections"  means,  with respect to any Receivable,  all funds which
are  received  by the Seller or the  Collection  Agent in payment of any amounts
owed in respect  of such  Receivable  (including,  without  limitation,  finance
charges,  interest  and all amounts  received by the Seller  pursuant to Section
7.3(b)(i)  hereof),  applied  to  amounts  owed in  respect  of such  Receivable
(including, without limitation,  insurance payments and net proceeds of the sale
or other disposition of repossessed goods or other collateral or property of the
related  Obligor  or any other  Person  directly  or  indirectly  liable for the
payment of such Receivable and available to be applied thereon).

         "Collection Agent" means DSRM or any replacement thereof under
Section 8.2.1.

         "Collection  Agent Fee" means the percentage  used to determine the fee
payable by the  Purchasers  to the  Collection  Agent,  as  described in Section
5.1.4.

         "Commencement  Date" means the date  following the Conduit  Purchaser's
election not to make any further  purchases under this Agreement,  provided that
no Event of Liquidation has occurred.

         "Concentration Limit" means, with respect to any  Obligor, the Standard
Concentration Limit or the Special Concentration Limit, as applicable.

         "Conduit Lender" has the meaning specified in Section 11.3.

         "Conduit Purchaser" means Asset Securitization Cooperative Corporation,
a California cooperative corporation, and its successors and assigns.

         "Credit  and  Collection   Policies"   means  the  written  Credit  and
Collection Policies utilized by the Seller and the Originators,  attached hereto
as Schedule B, as the same shall be supplemented or otherwise modified in strict
compliance with this Agreement.

         "Credit  Card  Receivables  Purchase  Agreement"  means the Credit Card
Receivables Purchase Agreement of even date herewith among the Seller, DSRM, the
Conduit Purchaser, the Back-Stop Purchaser and the Administrative Agent relating
to a portfolio of credit card  receivables  originated by certain  Affiliates of
the Seller and serviced by DSRM.

         "Credit  Card   Receivables  Sale  Agreement"  means  the  Credit  Card
Receivables Sale Agreement of even date herewith between DSRM and the Seller, as
amended, restated, supplemented or otherwise modified from time to time.

<PAGE>

         "Credit Facilities" means each of the committed loan facilities,  lines
of credit, letters of credit, surety bonds and other forms of credit enhancement
available to the Conduit Purchaser to support the Conduit Purchaser's commercial
paper and which are not Liquidity Facilities.

         "Days Sales  Outstanding"  means,  in respect of any month, a number of
days  equal to the  product  of (a) the number of days in such month and (b) (i)
the  aggregate  outstanding  balance  of all  Receivables  as of the end of such
month,  divided by (ii) the  aggregate  outstanding  balance of all  Receivables
generated during such month.

         "Default  Ratio" means,  as of any date of  determination,  a fraction,
expressed  as a  percentage,  the  numerator  of which is (A) the sum of (i) the
aggregate   outstanding   balance  of  all  Receivables  that  became  Defaulted
Receivables  during  the  month  most  recently  ended  and (ii)  the  Aggregate
Charge-Offs,  and (B) the  denominator  of  which is the  aggregate  outstanding
balance of all  Receivables  on the last Business Day of the month most recently
ended.

         "Defaulted  Receivable" means any Receivable (the amount of which shall
be determined from the Seller's aged trial balance) which, without duplication:

         (1)      all or any  portion of which  remains  unpaid more than 30 but
                  fewer than 61 days past the date on which it was due; or

         (2)      is owed by an Obligor that is in  bankruptcy,  reorganization,
                  insolvency or similar proceedings.

         "Delinquency Ratio" means, as of any date of determination, a fraction,
expressed as a percentage,  the numerator of which is the aggregate  outstanding
balance of all Receivables that were unpaid for more than 21 days but fewer than
30 days  past the dates on which  they were due as of the end of the month  most
recently  ended,  and the  denominator  of  which is the  aggregate  outstanding
balance of all Receivables as of such date.

         "Diamond Shamrock Entity" has the meaning specified in Section 10.1(m).

         "DSRM"  means  Diamond  Shamrock  Refining  and  Marketing  Company,  a
Delaware corporation, and its successors.

         "Dilution  Ratio" means,  as of the last day of any month,  a fraction,
expressed as a percentage,  the  numerator of which is the  aggregate  amount of
Dilutions for the most recently  completed calendar month and the denominator of
which is the aggregate outstanding balance of all Receivables as of such day.

<PAGE>

         "Dilution  Reserve" means, as of any date of  determination,  an amount
equal to (a) the product of (1) the outstanding balance of Eligible  Receivables
as at the end of the calendar  month most recently  ended and (2) 2.00 times the
greatest of the Dilution  Ratios  determined  for each calendar month during the
period of twelve (12) months preceding such date of  determination  less (b) the
Standard Concentration Limit.

         "Dilutions"   means  the  aggregate   amount  of  any   reductions  and
cancellations of Receivables which have been reduced or canceled,  respectively,
by reason of return,  discount  (including,  without  limitation,  early payment
discounts) or other adjustment.

         "Eligible Receivable" means any Receivable:

         (1)      which  is  not  unpaid for  more than 20 days past the date on
                  which it was due;

         (2)      which is  required  to be paid in full  within no more than 30
                  days of the date on which it was billed;

         (3)      which is payable only in U.S. dollars;

         (4)      which is not a Defaulted Receivable or a Charge-Off;

         (5)      the  Obligor  of which  has not been at any  time  during  the
                  period  of  12  consecutive  months  ending  on  the  date  of
                  determination,  (A) the Obligor of a Charge-Off  in conformity
                  with the then current Credit and  Collections  Policies or (B)
                  in   bankruptcy,   reorganization,   insolvency   or   similar
                  proceedings.

         (6)      the  Obligor  of  which  is  a  U.S.  resident  and is  not an
                  Affiliate of the Originators or the Seller;

         (7)      which is not subject to any dispute, claim, defense or offset;

         (8)      which is an  "account"  or a "general  intangible"  within the
                  meaning of the Uniform  Commercial  Code of the State in which
                  is located the  Seller's  place of business  or, if the Seller
                  has  more  than one  place of  business,  the  Seller's  chief
                  executive office;

         (9)      which  arose  from a bona  fide  sale  of  merchandise  or the
                  rendering  of  services  accepted  by   the  Obligor  of  that
                  Receivable  and was  acquired from  DSRM pursuant to the Trade
                  Receivables Sale Agreement;
<PAGE>

         (10)     in which the applicable  Purchaser shall, upon the Purchase of
                  an Ownership  Interest  therein,  acquire good and  marketable
                  title to the Ownership Interest therein, free and clear of all
                  liens,  security  interests and encumbrances other than any in
                  favor  of  any  Purchaser  that  may  be  created  under  this
                  Agreement;

         (11)     that is the legal, valid and binding payment obligation of the
                  Obligor thereon;

         (12)     which  does  not  contravene  any  applicable   law,  rule  or
                  regulation in any material respect;

         (13)     which is  not  subject  to  any  restrictions on the transfer,
                  assignability or sale thereof;

         (14)     the terms of which  satisfy all  applicable  provisions of the
                  Credit  and  Collection  Policies  current  at the time of the
                  origination thereof;

         (15)     which was generated in the ordinary course of the Originators'
                  business and acquired by Seller from the Originators  pursuant
                  to the terms of the Transfer Agreement; and

         (16)     which the Administrative Agent has not designated, upon thirty
                  (30) days'  notice to the Seller,  as no longer  eligible  for
                  transfer hereunder.

         "ERISA" means the Employee  Retirement  Income Security Act of 1974 and
the rules and regulations thereunder, as amended from time to time.

         "ERISA   Affiliate"  means  any  trade  or  business  (whether  or  not
incorporated) that is treated as a single employer with the Seller under Section
414 of the Code.

         "Event of Liquidation" means any one or more of the following
events:

         (a)      the Parent's  long-term  unsecured private debt or public debt
                  rating  falls  below BBB- from S&P or Baa3 from  Moody's;  the
                  Performance  Support Agreement shall cease to be in full force
                  and effect;  or the Parent shall have disaffirmed or otherwise
                  repudiated  its  obligations  under  the  Performance  Support
                  Agreement  or  notified  the  Administrative Agent or any Pur-
                  chaser of its intention to do so;

<PAGE>

         (b)      Either of DSRM or the Seller shall no longer be a wholly-owned
                  direct or indirect subsidiary of the Parent;

         (c)      the  Seller  shall  cease  to  be  a  member  of  the  Conduit
                  Purchaser;

         (d)      the  Seller  or the  Collection  Agent  (if it is  DSRM or any
                  Diamond  Shamrock  Entity) shall fail to make any payment when
                  due to any of the Purchasers under any of the Sale Documents;

         (e)      any Diamond Shamrock Entity shall breach any representation or
                  warranty or fail to perform or observe  any term,  covenant or
                  agreement  applicable  to it  which is  contained  in any Sale
                  Document  to which it is a party  other  than one  covered  by
                  clause (d) above, and such breach or failure is likely to have
                  a  material  adverse  effect  on  the  collectibility  of  the
                  Receivables;

         (f)      (i) the  Seller,  DSRM,  or the Parent shall be in bankruptcy,
                  reorganization, insolvency  or similar proceedings or (ii) any
                  other  Diamond  Shamrock   Entity  shall   be  in  bankruptcy,
                  reorganization, insolvency or similar proceedings and any such
                  proceeding  has  had or can  reasonably be  expected to have a
                  material   adverse   effect  on  the   collectibility  of  the
                  Receivables,  the  ability  of  any  of  the  Diamond Shamrock
                  Entities  to  perform  their respective  obligations under the
                  Sale  Documents or the legality, validity or enforceability of
                  any Sale Document or of the Ownership Interest;

         (g)      the  Aggregate  Ownership  Interest  shall  exceed the Maximum
                  Ownership  Interest  and the Seller  shall have failed to make
                  the payment required under Section 3.3;

         (h)      on any Settlement Date the Delinquency  Ratio shall be greater
                  than the Historical Delinquency Ratio;

         (i)      on  any  Settlement   Date  the  average  of  the  Days  Sales
                  Outstanding  for the most recently ended month and each of the
                  two immediately preceding months exceeds 40 days;

         (j)      on any Settlement Date the Default Ratio shall be greater than
                  the lesser of 14% or the Historical Default Ratio;

<PAGE>

         (k)      the occurrence of any event which has had or can reasonably be
                  expected  to  have  a  material  adverse  effect  on  (i)  the
                  collectibility  of  the  Receivables,  or  (ii)  the legality,
                  validity  or  enforceability  of  any  Sale Document or of the
                  Ownership Interest;

         (l)      on any Settlement Date, the Dilution Ratio exceeds the product
                  of 1.5 and the greatest of the Dilution  Ratios for each month
                  during the period of twelve months  preceding such  Settlement
                  Date;

         (m)      the Charge-Off Ratio shall at any time exceed 1.00%; or

         (n)      The Parent, DSRM  or the  Seller  shall default in the payment
                  when due (whether at scheduled  maturity, required prepayment,
                  demand  or otherwise)  with respect to any indebtedness of the
                  Parent, DSRM  or the  Seller, the outstanding principal amount
                  of which indebtedness,  in  the  aggregate,  is $25,000,000 or
                  higher; or the Parent, DSRM or the Seller shall default in the
                  performance or observance of any other obligation or condition
                  with respect to any such indebtedness or any other event shall
                  occur  or  condition exist, if, as a result, such indebtedness
                  has become or can then be declared to be due and payable prior
                  to its  stated maturity other  than as a result of a regularly
                  scheduled payment.

         "Extension Date" means the last day of each calendar quarter commencing
June 30, 1999.

         "Facility  Limit" means the excess of  $250,000,000  over the aggregate
outstanding  "Investment"  under and as  defined  in this  Agreement;  provided,
however,  that on and after the  Termination  Date,  the "Facility  Limit" shall
equal the outstanding Investment from time to time.

         "Federal Funds Rate" means, for any period, a fluctuating interest rate
per annum equal for each day during such period to (a) 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 immediately  preceding  Business Day)
by the Federal Reserve Bank of New York, or (b) 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.

<PAGE>

         "Fee Letter" means the letter  agreement of even date herewith  between
the Administrative Agent and the Seller relating to fees.

         "Governmental Obligor" means any obligor that is a government,
a government subdivision or an agency of a government,

         "Historical  Default Ratio" means, as of any date of  determination,  a
percentage  equal to the  product  of (i) 1.50  and  (ii)  the  greatest  of the
fractions determined for each month during the period of 12 months preceding the
date of  determination  obtained  by dividing  (A) the sum of (i) the  aggregate
amount of all Defaulted  Receivables  and (ii) the Aggregate  Charge-Offs by (B)
the outstanding balance of Receivables as at the end of each such month.

         "Historical  Delinquency Ratio" means, as of any date of determination,
a  percentage  equal to the  product  of (i) 1.50 and (ii) the  greatest  of the
fractions determined for each month during the period of 12 months preceding the
date of  determination  obtained by  dividing  (A) the  aggregate  amount of all
Receivables  that were  unpaid for more than 21 days but fewer than 30 days past
the dates on which  they  were due as at the end of each  such  month by (B) the
outstanding balance of Receivables as at the end of each such month.

         "Incremental  Purchase"  means  any  Purchase  (other  than an  Initial
Purchase) which causes the amount of the Investment to increase.

         "Initial  Purchase"  means,  with  respect  to a  Purchaser,  the first
Purchase by such Purchaser under this Agreement.

         "Investment" means the sum of:

         (1)      the  aggregate  amount of cash paid by the  Purchasers  to the
                  Seller  for  their  respective   Initial   Purchases  and  all
                  Incremental  Purchases,  less the  amount  of all  Collections
                  received  and  applied  pursuant  to  Sections   7.2.1(b)  and
                  7.2.2(b)  and of all  payments  made by the Seller and applied
                  under Sections 3.3, 6.2(c) and 7.3; and

         (2)      any amounts owed by the Seller to the Purchasers under Article
                  XI.

         "LIBO Rate"  means,  for any  Settlement  Period,  the rate of interest
determined by the  Administrative  Agent to be the average (rounded upwards,  if
necessary,  to the  nearest  1/16 of 1%) of the rates  per  annum at which  U.S.
dollar  deposits  in  immediately  available  funds are  offered by CIBC two (2)
Business Days prior to the beginning of such Settlement Period to prime banks in

<PAGE>

the  interbank  eurodollar  market as at or about 10:00 A.M. New York time,  for
delivery on the first date of such Settlement Period, for a one month period and
in an amount equal to the amount of the Investment to be funded at the LIBO Rate
as of such second Business Day prior to the beginning of such Settlement Period.

         "LIBO Rate (Reserve Adjusted)" means,  relative to any Purchase for any
Settlement  Period,  a rate per annum  (rounded  upwards,  if necessary,  to the
nearest 1/16 of 1%) determined pursuant to the following formula:

                  LIBO Rate                 =        LIBO Rate
                                                     ----------
                  (Reserve Adjusted)                 1-LIBOR
                                                     Reserve
                                                     Percentage

The  Administrative  Agent shall determine the LIBO Rate (Reserve  Adjusted) for
each  Settlement  Period  applicable  to any  Purchase  and  promptly  provide a
certificate  of such  calculation  to the Seller  thereof  (which  determination
shall, in the absence of manifest error, be conclusive on the Seller).

         "LIBOR Reserve Percentage" means, relative to each Settlement Period, a
percentage  (expressed  as a decimal)  equal to the daily  average  during  such
Settlement  Period of the  percentages in effect on each day of such  Settlement
Period,  as prescribed by the Board of Governors of the Federal  Reserve  System
(or any successor  thereof) for  determining  the maximum  reserve  requirements
applicable to "Eurocurrency  Liabilities"  pursuant to Regulation D or any other
applicable  regulation which prescribes reserve requirements  applicable to such
"Eurocurrency Liabilities".

         "Liquidity  Facilities"  means each of the committed  loan  facilities,
lines of credit and other  financial  accommodations  available  to the  Conduit
Purchaser to support the liquidity of the Conduit  Purchaser's  commercial paper
notes and medium term notes.

         "Lock-Box"  means  any lock-box(es) or account(s) to which the Obligors
remit Collections.

         "Lock-Box  Agreement"  means  each  agreement  in the form of Exhibit D
hereto executed by the Seller,  the Collection Agent, the  Administrative  Agent
and each Lock-Box Bank.

         "Lock-Box Bank" means any institution at which a Lock-Box is
established and maintained.

         "Loss Reserve" means, on any date of determination,  the product of two
(2) times the highest  Default  Ratio  occurring  during the twelve  months most
recently completed on such date.

<PAGE>

         "Maximum Ownership Interest" means 100%.

         "Moody's" means Moody's Investors Service, Inc. and any
successor thereto.

         "Net ER" has the meaning set forth in Section 3.1(a).

         "Obligor"  means  any  Person  that  is  obligated to make payment on a
Receivable.

         "Operating  Expense Fee" means the percentage used to determine the fee
payable by the Seller to the Conduit Purchaser, as described in Section 5.1.3.

         "Originator" means  each  of  DSRM, TPI Petroleum, Inc., Ultramar, Inc.
and Diamond Shamrock Refining Company, L.P.

         "Other Taxes" has the meaning specified in Section 11.5(b).

         "Ownership  Interest"  means,  at any time,  the  undivided  percentage
ownership interest of a Purchaser in the Receivables and related  Collections as
determined pursuant to Section 3.1(a).

         "Parent"  means  Ultramar  Diamond  Shamrock  Corporation,  a  Delaware
corporation or any successor.

         "PBGC"  means   the  Pension  Benefit   Guaranty  Corporation  and  any
successor thereto.

         "Performance Support Agreement" means the Performance Support Agreement
of even date  herewith  executed  by the  Parent in favor of the  Administrative
Agent and the  Purchasers,  as  amended,  restated,  supplemented  or  otherwise
modified from time to time.

         "Person" means any  corporation,  natural person,  firm, joint venture,
partnership,  limited liability  company,  trust,  unincorporated  organization,
enterprise, government or any department or agency of any government.

         "Plan" means each employee  benefit plan (as defined in Section 3(3) of
ERISA)  currently  sponsored,  maintained or contributed to by the Seller or any
ERISA  Affiliate or with respect to which the Seller or any ERISA  Affiliate has
any liability.

                  "Prime  Rate"  means the rate  announced  by CIBC from time to
time as its prime  rate in the  United  States,  such rate to change as and when
such  designated  rate changes.  The Prime Rate is not intended to be the lowest
rate of interest  charged by CIBC in  connection  with  extensions  of credit to
debtors.

<PAGE>

         "Purchase"  means any purchase by a Purchaser of an Ownership  Interest
from the Seller under this  Agreement,  and includes  such  Purchaser's  Initial
Purchase, any Incremental Purchase and any
Reinvestment Purchase by such Purchaser.

         "Purchase  Discount"  means the percentage used to determine the amount
payable by the Seller to the Purchasers to cover the Purchasers' cost of funding
the Purchases, as described in Section 5.1.1.

         "Purchase  Premium" means the  percentage  used to determine the amount
payable by the Seller to the Purchasers, as described in Section 5.1.2.

         "Purchaser" means each of the Conduit Purchaser and the Back-
Stop Purchaser.

         "Receivable"  means the obligation of an Obligor to pay for merchandise
sold or services  rendered by the  Originators as shown from time to time on the
aged trial balance  maintained by the  Collection  Agent in connection  with the
wholesale  refining and  marketing  business of the  Originators,  including all
rights to payment of any  interest  or finance  charges  and in the  merchandise
(including  returned  goods) and  contracts  relating to such Receiv  able,  all
security  interests,  guaranties and property securing or supporting  payment of
such  Receivable,  all books and  records  relating to the  Receivables  and all
proceeds of the foregoing.

         "Receivables Activity Report" means the report in the form of Exhibit F
hereto to be provided by the  Collection  Agent to the  Administrative  Agent in
accordance with Sections 6.4 and 7.4 of this Agreement.

         "Receivables Systems" has the meaning specified in Section 9.1.(q).

         "Reinvestment Purchase" means any Purchase made with Collections.

         "Reserve"  means,  as of any date, an amount equal to the Investment on
such date multiplied by a fraction, the numerator of which equals the sum of the
items set forth below (each  expressed as a percentage),  and the denominator of
which equals 100% minus such sum:

         (1)      the Loss Reserve;

         (2)      the Standard Concentration Limit;

         (3)      the Collection Agent Fee; and

         (4)      the Yield Reserve Percentage.

<PAGE>

         "S&P" means Standard & Poor's, a division of The McGraw-Hill Companies,
Inc., and any successor thereto.

         "Sale  Documents"  means this Agreement,  the Transfer  Agreement,  the
Trade  Receivables  Sale  Agreement,  the  Performance  Support  Agreement,  the
Exhibits  hereto to which the Seller is a party,  the Lock-Box  Agreements,  the
Blocked Account Agreements and all other certificates,  agreements and documents
executed  from time to time by the Seller in  connection  with the  transactions
contemplated in this Agreement.

         "Seller" means Coyote Funding,  L.L.C.,  a Delaware  limited  liability
company, and its successors and permitted assigns.

         "Settlement  Date" means any date,  as described in Section 7.1 of this
Agreement, on which the Collection Agent is required to remit specified payments
to the Purchasers.

         "Settlement  Period" means the period from (and including) a Settlement
Date (or, in the case of the initial  Settlement  Period  under this  Agreement,
from  the  date  of the  earliest  Initial  Purchase)  to  (but  excluding)  the
immediately succeeding Settlement Date.

         "Special Concentration Limit" means, with respect to any Obligor having
a  long-term  unsecured  private or public  debt  rating  from either or both of
Moody's  and S&P,  the  amount  corresponding  to such  ratings  as set forth on
Schedule A; provided, however, that the Administrative Agent may, at any time in
its  discretion,   reduce  the  Special  Concentration  Limit  for  any  Obligor
notwithstanding  the ratings  applicable to such Obligor's  long-term  unsecured
public or private debt.

         "Standard  Concentration  Limit" means, at any time with respect to all
of the Receivables  owing from a single Obligor (except for an Obligor listed on
Schedule  A),   together  with   Receivables   owing  from  its   Affiliates  or
subsidiaries,  an amount equal to 2% of the  Investment  at such time;  provided
that the  Administrative  Agent may,  at any time in its  discretion,  reduce or
increase the Standard  Concentration  Limit for any Obligor through the delivery
of a notice by the Administrative Agent to the Seller.

         "Taxes" has the meaning specified in Section 11.5(a).

         "Termination  Date"  means the earlier of (a) March 27,  2000,  as such
date may be extended  pursuant to Section 2.2 and (b) the date on which an Event
of Liquidation occurs.

<PAGE>

         "Trade Receivables Sale Agreement" means that certain Trade Receivables
Sale Agreement  between DSRM and the Seller dated as of the date hereof,  as the
same may be amended,  restated,  supplemented or otherwise modified from time to
time.

         "Transfer Agreement" means that certain Transfer Agreement of even date
herewith among TPI Petroleum, Inc., Ultramar, Inc. and Diamond Shamrock Refining
Company,  L.P.,  as  sellers,  and DSRM,  as buyer,  as the same may be amended,
restated, supplemented or otherwise modified from time to time.

         "Unused Facility Fee" has the meaning specified in Section 5.2.

         "Year 2000 Compliant" has the meaning specified in Section 9.1(q).

         "Yield Reserve Percentage" means, for any Settlement Period (A) the sum
of (i) the Purchase Premium,  (ii) the Purchase  Discount  multiplied by 1.3 and
(iii) the Operating Expense Fee (B) multiplied by 75/360.


                          ARTICLE II: PURCHASE FACILITY

         SECTION 2.1. Purchase Facility.  On the terms and conditions  described
in this Agreement,  the Conduit Purchaser may, in its sole discretion,  purchase
an Ownership  Interest in the Receivables  offered for sale from time to time by
the Seller.  The  Back-Stop  Purchaser,  if so  requested  by the  Seller,  will
purchase  during  the  period on and  after the  Commencement  Date  until  (but
excluding) the Termination  Date, an Ownership  Interest in Receivables  offered
for sale from time to time (provided  that no Event of Liquidation  has occurred
and is  continuing)  by  the  Seller.  Nothing  herein  shall  be  construed  as
constituting  a  commitment  on the  part of the  Seller  to  sell an  Ownership
Interest in Receivables or on the Conduit Purchaser to make any Purchases. In no
event shall the Back-Stop  Purchaser's share of the Investment exceed the excess
of the Facility Limit over the outstanding Investment of the Conduit Purchaser's
Ownership Interest.

         SECTION 2.2.  Extension or Acceleration of the Termination Date.

         (a) Prior to the occurrence of an Event of Liquidation, the Seller may,
on a quarterly  basis at least  fifteen (15) days prior to any  Extension  Date,
request by notice to the Back-Stop  Purchaser  that the date specified in clause
(a) of the definition of "Termination  Date" be extended (any such request being

<PAGE>
an "Extension  Notice").  The Back-Stop Purchaser shall not have a commitment or
obligation to extend the Termination  Date. If the Back-Stop  Purchaser,  in its
sole  discretion,  agrees to accept  any  request  on the part of the  Seller to
extend  the  Termination  Date,  it shall so advise the Seller in writing by not
later than five (5) Business  Days prior to such  Extension  Date.  In the event
Back-Stop Purchaser shall fail to advise the Seller in response to any Extension
Notice,  such request for extension shall be deemed to have been declined.  Upon
acceptance in writing by the Back-Stop  Purchaser of any request set forth in an
Extension Notice,  the Termination Date shall thereupon become the date which is
360 days following  such  Extension  Date. As of no date during the term of this
Agreement shall the period from such date to the Termination Date then in effect
exceed a period of 360 days.

         (b)  Notwithstanding  the provisions of Section 2.2(a),  the Seller may
accelerate   the   Termination   Date  by  notifying  the   Purchasers  and  the
Administrative Agent to such effect. Such notice shall be given by no later than
1:00 p.m. New York time on the third  Business Day  preceding  the date on which
Seller intends the Termination Date to occur.

                     ARTICLE III: SALE OF OWNERSHIP INTEREST

         SECTION 3.1.  Determination of Ownership Interest.

         (a) When a  Purchaser  accepts an offer from the Seller to  purchase an
interest in the Receivables, such Purchaser shall have acquired, in exchange for
the purchase  price paid,  an  undivided  percentage  ownership  interest in the
Receivables  and any  Collections  relating  thereto.  The undivided  percentage
interest of a Purchaser in all  Receivables  and related  Collections  purchased
hereunder shall be referred to in this Agreement as such Purchaser's  "Ownership
Interest." The Ownership Interests of all of the Purchasers on any date shall be
referred to herein as the  "Aggregate  Ownership  Interest"  on such date,  and,
except as provided in  paragraphs  (b) and (c) of this  Section 3.1, is equal to
the following fraction (expressed as a percentage):

                                   I + R
                                   -----
                                   Net ER

          where:       I    =        the Investment on such date

                       R    =        the Reserve on such date

                  Net ER    =  the   outstanding   balance   of   all   Eligible
                               Receivables  on  such  date,   less  the Dilution
                               Reserve on such date, less the aggregate  amount 
                               by which  the  outstanding  balance  of  Eligible
                               Receivables  of each  Obligor exceeds its Concen-
                               tration Limit on such date and less the aggregate
                               amount by  which  the  outstanding balance of all
                               Eligible  Receivables  owing from a  Governmental
                               Obligor  exceeds 5.00%  of the Investment on such
                               date.
<PAGE>

The  Ownership  Interest  will change  from time to time,  except as provided in
paragraphs (b) and (c) of this Section 3.1, whenever the Investment,  Reserve or
Net ER changes.

         (b)  During  any  period  when the  Investment  is being  reduced,  the
Aggregate Ownership Interest will remain fixed at the percentage in effect as of
the close of business on the Business Day immediately preceding the commencement
of that period.

         (c) The Aggregate  Ownership  Interest will be reduced to zero when the
Purchasers receive the following amounts:

                  (1)      their respective shares of the Investment;

                  (2)      as further  provided  in Section  7.2.2(b)(i),  their
                           respective  shares of the accrued and unpaid  portion
                           of the Purchase  Discount,  Purchase Premium,  Unused
                           Facility Fee, Collection Agent Fee (if not payable to
                           a Diamond Shamrock Entity), Operating Expense Fee and
                           Administration Fee; and

                  (3)      all other fees,  expenses and amounts  payable to the
                           Purchasers under this Agreement.

When the Aggregate Ownership Interest in the Receivables is reduced to zero, the
Purchasers shall not be entitled to receive any additional  Collections from the
Receivables.

         (d) The  Administrative  Agent shall  maintain books and records (which
shall be presumed  accurate  absent  manifest  error)  reflecting the respective
shares of the  Purchasers in the  Aggregate  Ownership  Interest  based upon the
aggregate  amount of cash paid by each  Purchaser  to the Seller for the Initial
Purchase by such Purchaser and all Incremental Purchases by such Purchaser, less
the  amount  of  all  Collections  received  and  applied  pursuant  to  Section
7.2.2(b)(ii)(A)  and of all  payments  made  by the  Seller  and  applied  under
Sections 3.3 , 6.2(c) and 7.3. The  Administrative  Agent shall allocate amounts
paid by the Seller  hereunder  in respect of the  Aggregate  Ownership  Interest
accordingly,  taking into account the differing rates for  determining  Purchase
Discount for each Purchaser.

<PAGE>

         (e) Subject to the provisions of Section  8.2(d),  upon any Purchaser's
purchase of an Ownership Interest, the Administrative Agent shall be entitled to
(i)  endorse  all  drafts,  checks and other  forms of payment on account of the
Receivables  and to  settle,  adjust  and  forgive  any  amounts  payable on the
Receivables   and  (ii)  exercise  all  other  incidents  of  ownership  in  the
Receivables.

         (f) The Seller  hereby  assigns to the  Administrative  Agent,  for the
benefit of the Purchasers, all rights of the Seller against DSRM under the Trade
Receivables Sale Agreement and agrees that (i) the Administrative  Agent and the
Purchasers  shall be third party  beneficiaries of the Seller's rights under the
Trade Receivables Sale Agreement,  (ii) the Seller will enforce its rights under
the Trade Receivables Sale Agreement on behalf of the  Administrative  Agent and
the Purchasers and (iii) the  Administrative  Agent, on behalf of the Purchasers
shall be entitled to enforce  such  rights  against  DSRM if the Seller does not
enforce such rights  following notice from the  Administrative  Agent, as if the
Administrative   Agent  and  the  Purchasers  had  been  parties  to  the  Trade
Receivables Sale Agreement.

         SECTION 3.2. Frequency of Determining Aggregate Ownership Interest. The
Collection  Agent  shall  determine  or be deemed  to  determine  the  Aggregate
Ownership  Interest and report it to the  Administrative  Agent at the following
times:

         (a)      on the date of each Initial Purchase;

         (b)      on each Settlement Date;

         (c)      on the date of each Incremental Purchase;

         (d) on the Business Day  immediately  preceding any period during which
the Investment is being reduced;

         (e)      on the Business Day on which the Investment ceases being
reduced;

         (f) when the  Collection  Agent has reason to believe  that the Maximum
Ownership Interest has been exceeded; and

         (g)      at the request of any Purchaser.

         SECTION  3.3.  Maximum  Ownership  Interest.  If during any  Settlement
Period,  the Aggregate  Ownership  Interest at the end of such Settlement Period
exceeds the Maximum  Ownership  Interest,  the Seller shall  immediately  make a
payment to the Collection Agent in an amount  sufficient to reduce the Aggregate
Ownership  Interest  to the  Maximum  Ownership  Interest  but not to exceed the
portion of Collections  paid to Seller during such Settlement  Period.  Any such
payment will be used to reduce the  Investment  and shall be applied  ratably to
the Ownership  Interests of the Purchasers  according to their respective shares
of the Investment.

<PAGE>

         SECTION 3.4. Lock Boxes, Blocked Accounts and Collections.  In order to
secure the prompt and  complete  payment,  observance  and  performance  of this
Agreement,  the Seller hereby assigns and pledges to the  Administrative  Agent,
for the benefit of the Purchasers,  and grants a security  interest  thereto in,
all of Seller's  right  title and  interest  in the  Lock-Boxes  and the Blocked
Accounts,  including,  without limitation, any deposits or sums at any time held
in each Lock-Box and each Blocked  Account.  Upon the  occurrence and during the
continuation  of an Event of  Liquidation,  the  Administrative  Agent  may take
control of the  Lock-Boxes  and  Blocked  Accounts or any of them and either the
Administrative  Agent  or  any  Purchaser  may  notify  the  Obligors  that  the
Receivables  have been assigned to the  Purchasers,  and either in its own name,
and/or  the name of  Originators  and/or  the  Seller,  as  applicable,  demand,
collect,  receive,  receipt for,  sue for,  compound  and  discharge  any or all
amounts  due or to become due  thereon,  and, in the  Administrative  Agent's or
Purchasers' discretion (and without creating any obligation of the Purchasers or
Administrative  Agent),  file any claim or take any other  action or  proceeding
which  the  Administrative  Agent  or  the  Purchasers  may  deem  necessary  or
appropriate to protect and realize upon the Receivables.

                           ARTICLE IV: PURCHASE PRICE

         The purchase price payable by a Purchaser for its Ownership Interest in
the Receivables and any Collections shall be comprised of a cash component and a
deferred payment component.

         SECTION 4.1.  Determination of Cash Component of Purchase Price. When a
Purchaser  accepts an offer from the Seller to make a Purchase,  such  Purchaser
will pay the following amounts in cash to the Seller:

         (a)  for   any  Initial  and  any   Incremental  Purchases,  the amount
specified in the notice  required to be  delivered  by the Seller under  Section
6.2(a); or

         (b)  for a   Reinvestment  Purchase, the amount obtained by multiplying
(i) the dollar amount of the  Collections  received on the date of such Purchase
by (ii) such Purchaser's  Ownership  Interest on that date, and subtracting from
such amount any amounts then payable to the  Administrative  Agent under Section
7.2.2(b)(i);  provided  that the payment of any amount  described  in (a) or (b)
above would not cause (and such amount shall be reduced so as not to cause)
either:

<PAGE>
         (1)      the Investment at any time to exceed the Facility Limit;
                  or

         (2)      the Aggregate Ownership Interest to exceed the Maximum
                  Ownership Interest.

         SECTION 4.2.  Determination of Deferred  Payment  Component of Purchase
Price. Upon and after the reduction of the Aggregate  Ownership Interest to zero
as described in Section  3.1(c),  all  Collections or other cash received by the
Administrative Agent or any Purchaser on account of Receivables and the interest
of the  Purchasers  therein  and all  Receivables  held by or on  behalf  of the
Purchasers  will be  transmitted  in the form received by such  Purchaser or the
Administrative  Agent to the  Seller.  The  transmission  of such amount by such
Purchaser or the Administrative  Agent shall be deemed to satisfy the payment of
the deferred payment component of the purchase price under this Article IV.

                          ARTICLE V: FEES AND EXPENSES

         SECTION 5.1.  Settlement Date Payments.  The Administrative  Agent will
notify the  Seller and the  Collection  Agent on the last  Business  Day of each
calendar month of the Purchase  Discount,  Purchase  Premium,  Operating Expense
Fee, the Unused Facility Fee, the  Administration  Fee and Collection Agent Fee.
On each Settlement Date, the Seller will pay to the Purchaser the following,  in
accordance with Section 7.2.2.

         SECTION 5.1.1 Purchase Discount. A Purchase Discount equal to, for each
day in any Settlement Period, the weighted average of the following:

         (i) the weighted  average  determined  on each such day of the discount
rates on all  commercial  paper  notes  issued  by the  Conduit  Purchaser  at a
discount on such day (other than  commercial  paper notes the  proceeds of which
are  used by the  Conduit  Purchaser  to (x)  purchase  receivables,  or  extend
financing secured thereby, at a fixed interest rate or (y) conduct any arbitrage
activities  of the Conduit  Purchaser)  converted to an annual  yield-equivalent
rate on the basis of a 360-day year;

         (ii) the  weighted  average  determined  on each such day of the annual
interest rates payable on all interest-bearing  commercial paper notes issued by
the  Conduit  Purchaser  on such day  (other  than the  commercial  paper  notes
described  in clauses (x) and (y) of  paragraph  (i)  above),  on the basis of a
360-day year;

<PAGE>

         (iii) the  Alternative  Rate for the Settlement  Period relating to the
Settlement  Date to the extent  that the  ConduitPurchaser  has  borrowed  money
during such  Settlement  Period  (which  money  shall be  borrowed  only after a
determination by the Conduit Purchaser that financing its activities during such
period  by  issuing   commercial   paper  notes  would  not  be  practicable  or
cost-efficient); and

         (iv) the  Alternative  Rate for the Settlement  Period relating to such
Settlement Date in respect of that portion of the Investment,  if any, allocable
to the Ownership Interest of the Back-Stop Purchaser.

         SECTION 5.1.2.  Purchase Premium.  In respect of the Ownership Interest
of the  Conduit  Purchaser,  a  Purchase  Premium  equal to the  rate per  annum
specified as such in the Fee Letter.

         SECTION  5.1.3.  Operating  Expense  Fee.  In respect of the  Ownership
Interest of the Conduit  Purchaser,  an Operating  Expense Fee to cover  routine
operating  expenses of the Conduit  Purchaser  incurred  during the  immediately
preceding Settlement Period, including fees payable to commercial paper dealers,
issuing and paying agents, rating agencies, printers and auditors; provided that
(i) the Operating Expense Fee in respect of commercial paper dealer  commissions
shall not exceed a rate per annum equal to 0.05% and (ii) the Operating  Expense
Fee in respect of issuing and paying agent fees,  rating  agency fees,  printing
and all other routine operating expenses shall not exceed a rate per annum equal
to 0.01%.  If the amount of any  Operating  Expense Fee paid for any  Settlement
Period  exceeds the actual  amount of the  operating  costs and  expenses of the
Conduit Purchaser  incurred during such period,  then the Conduit Purchaser will
remit on an annual  basis the  excess to the  Seller in the form of a  patronage
distribution.

         SECTION 5.1.4.  Collection  Agent Fee. A Collection  Agent Fee equal to
1.00% per annum on the Purchaser's  average  outstanding  Investment,  which fee
shall be  remitted  by the  Purchasers  to the  Collection  Agent.  If a Diamond
Shamrock  Entity is acting as the Collection  Agent,  then the Collection  Agent
shall retain an amount equal to the Collection  Agent Fee (in full  satisfaction
of the payment of such fee to the Collection  Agent) out of amounts  required to
be remitted by the Collection Agent in accordance with Section 7.2.2(b)(i).

<PAGE>

         SECTION 5.1.5. Administration Fee. In respect of the Ownership Interest
of  the  Back-Stop  Purchaser   outstanding  during  the  immediately  preceding
Settlement Period, if any, an Administration Fee of up to 0.01% to cover routine
operating  expenses of the Back-Stop  Purchaser incurred during such immediately
preceding Settlement Period.

         SECTION 5.2. Unused Facility Fee. On each Settlement  Date, in addition
to the amounts  payable  pursuant to Section  5.1,  the Seller  shall pay to the
Back-Stop Purchaser an "Unused Facility Fee" for the period from the immediately
preceding  Settlement  Date (or, in the case of the initial payment of such fee,
from the date  hereof) to such  Settlement  Date equal to (i) the rate per annum
specified in the Fee Letter for computing the Unused Facility Fee, multiplied by
(ii) an amount, if positive, equal to the Facility Limit minus the average daily
amount of the outstanding  Investment  (calculated without regard to any amounts
then owed by the Seller under Article XI of this  Agreement or under any similar
provision  in any  other  Sale  Document).  The  Unused  Facility  Fee  shall be
calculated on the basis of a year of 360 days for actual days elapsed, and shall
be payable by the Seller from sources  other than  Collections  allocable to the
Purchasers.  There shall be credited  against  the Unused  Facility  Fee payable
hereunder,  the actual  amount of any "Unused  Facility  Fee" (as defined in the
Credit Card Receivables  Purchase Agreement) actually paid under the Credit Card
Receivables Purchase Agreement.

         SECTION 5.3.  Structuring Fee.  The  Seller  will pay a structuring fee
to the  Administrative  Agent on the date on which this Agreement is executed as
set forth in the Fee Letter.

         SECTION 5.4. Legal Fees and Expenses.  In addition to all other amounts
payable by the  Seller  under this  Agreement,  the Seller  agrees to pay to the
Purchasers by no later than 30 days after presentation of a bill therefore,  (i)
the  reasonable  fees and expenses of counsel for the  Purchasers  in connection
with the negotiation,  preparation,  execution, amendment and enforcement of the
Sale  Documents and advice with respect to the  Purchasers'  rights and remedies
thereunder  and (ii) all  reasonable  and  documented  out-of-pocket  costs  and
expenses of the Purchasers and the  Administrative  Agent incurred in connection
with this  Agreement  not  otherwise  provided for in this  Agreement  which are
accrued and owing to a Purchaser or the Administrative Agent, including, without
limitation,  expenses  in  connection  with  due  diligence  activities  of  the
Purchasers as to the Diamond  Shamrock  Entities after the date hereof,  such as
the costs of travel and lodging,  but excluding any expenses associated with the
replacement of the Administrative Agent.

         SECTION 5.5. Interest on Unpaid Amounts.  To the extent that the Seller
or Collection  Agent fails to pay when due to a Purchaser or the  Administrative
Agent any fee,  expense  or other  amount  payable  hereunder  or under any Sale
Document,  interest shall be due and payable on such unpaid amount, for each day
until  paid in full,  at the rate of 2.00% in  excess of the Base Rate in effect
from time to time.

<PAGE>

         SECTION 5.6.  Audits.  In addition to all other amounts  payable by the
Seller hereunder  (including,  without limitation,  under Sections 5.1.3 and 5.4
above), the Seller shall reimburse the Purchasers and the  Administrative  Agent
in respect of all reasonable  out-of-pocket  costs and expenses incurred by them
in the conduct of any audit or inspection of the Seller or the Collection  Agent
in connection with the Sale Documents.

                         ARTICLE VI: PURCHASE PROCEDURES

         SECTION 6.1. Types of Purchases. The three types of Purchases which can
be made under this Agreement are an Initial  Purchase,  an Incremental  Purchase
and a Reinvestment  Purchase.  The first  Purchase made by each Purchaser  under
this  Agreement  is the Initial  Purchase  with respect to such  Purchaser.  Any
Purchase (other than the Initial  Purchase) made by a Purchaser which causes the
amount of the Investment to increase is an Incremental  Purchase.  The amount of
each Incremental Purchase shall be $5,000,000 or greater. Any Purchase made by a
Purchaser with Collections is a Reinvestment Purchase.

         SECTION 6.2.  Notice Requirements.

         (a) In the case of the Initial  Purchase  with respect to any Purchaser
or any Incremental Purchase, the Seller will give the Administrative Agent three
(3) Business Days' written notice of its offer to sell an Ownership  Interest in
the Receivables to such Purchaser.  The notice will be in the form of Exhibit A,
and will include the amount of the new Investment requested and the Business Day
on which the Purchase will be made. The Conduit Purchaser will notify the Seller
within one Business Day after the receipt of such notice from the Seller whether
it intends to accept or reject the offer.

         (b) Each of the Seller and the Conduit  Purchaser may elect not to make
Reinvestment  Purchases by notifying  the other  parties  hereto to such effect.
Such notice shall be given by no later than 1:00 P.M. New York time on the third
Business  Day  preceding  the  date  on  which  the  Reinvestment  Purchase  was
contemplated to be made. The notice will be in the form of Exhibit B-1, and will
specify (i) the date on which  Reinvestment  Purchases  shall cease and (ii) the
amount to which the Investment  shall be reduced before  Reinvestment  Purchases
will  recommence.  No such notice  shall be required if an Event of  Liquidation
occurs,  and no further  Reinvestment  Purchases by any Purchaser  shall be made
upon the occurrence of an Event of Liquidation.

<PAGE>

         (c) The Seller may, on any Business Day (provided  that notice has been
given to the  Administrative  Agent in the form of Exhibit  B-2 by no later than
1:00 P.M. New York City time on the third  Business Day prior  thereto),  reduce
the dollar amount of the Investment in lieu of the application of Collections to
the amount of such  reduction  by paying to the  Administrative  Agent,  for the
ratable  account of the  Purchasers  based upon their  respective  shares of the
Investment,  by  12:00  Noon  New  York  City  time on the  Business  Day of the
contemplated  reduction,  the  dollar  amount by which the  Investment  is to be
reduced  after giving  effect to the  application  of  Collections  received and
applied to the reduction of the Investment on such Business Day.

         SECTION 6.3.  Conditions  Precedent to Initial Purchase.  The following
conditions  must be  satisfied  before  the first  Initial  Purchase  hereunder,
whether made by the Conduit Purchaser, in its sole discretion,  or the Back-Stop
Purchaser:

         SECTION 6.3.1. Membership in the Purchaser. The Seller will have joined
the Conduit  Purchaser  as a member by  delivering  to the Conduit  Purchaser an
executed Membership Agreement in the form of Exhibit C, together with the sum of
$10,000 as an  investment  in the Conduit  Purchaser.  Such  investment  will be
refunded by the Conduit  Purchaser  to the Seller when the  Aggregate  Ownership
Interest is reduced to zero and no further Purchases are to be made.

         SECTION 6.3.2.  Fees and Expenses.  The  Administrative  Agent and each
Purchaser  will  have  received  all  fees  and  expenses  due  hereunder  or in
connection  herewith  on or  prior to the date of such  first  Initial  Purchase
hereunder.

         SECTION 6.3.3.  Absence of Liens.  The  Administrative  Agent will have
received  evidence  acceptable to it (including  Uniform  Commercial Code search
reports)  that all  Receivables  and all proceeds  thereof are free and clear of
liens,  security  interests,  claims and  encumbrances  other than those created
pursuant  to this  Agreement,  the  Trade  Receivables  Sale  Agreement  and the
Transfer Agreement.

         SECTION 6.3.4. Financing Statements. The Administrative Agent will have
received  acknowledgment  copies of UCC-1  financing  statements,  and all other
documents  reasonably  requested by the  Administrative  Agent,  to evidence the
perfection of the Purchasers' Ownership Interests in the Receivables.

         SECTION 6.3.5.  Trade Receivables Sale Agreement;  Transfer  Agreement.
The  Administrative  Agent shall have  received  an  executed  copy of the Trade
Receivables   Sale   Agreement,   the   Transfer   Agreement   and  the  written
acknowledgment  of each  Originator  referred to in Section  2.1(b) of the Trade
Receivables Sale Agreement.

<PAGE>

         SECTION 6.3.6.  Receivables  Activity Report. The Administrative  Agent
will have  received  a  Receivables  Activity  Report  in the form of  Exhibit F
covering the calendar  month ending most recently prior to the date of the first
Initial Purchase hereunder.

         SECTION 6.3.7.  Resolutions.  The  Administrative  Agent  will have re-
ceived a certificate of each of the Seller's,  the Originators' and the Parent's
secretary or assistant secretary attesting to:

         (a) the resolutions of such Person's Board of Directors authorizing the
execution by such Person of the Sale Documents to be executed by such Person;

         (b) the names and signatures of the officers of such Person  authorized
to execute the Sale Documents to be executed by such Person; and

         (c) the  completeness  and  correctness of the attached  constitutional
documents  (certified by the  appropriate  governmental  officer) and by-laws of
such Person.

         SECTION  6.3.8.  Legal Opinion of Seller's and DSRM's and the Parents's
Counsel.  The Administrative  Agent will have received one or more opinions from
counsel  to each of the  Seller,  DSRM and the Parent  satisfactory  in form and
substance to the Administrative Agent.

         SECTION 6.3.9. Good Standing  Certificates.  The  Administrative  Agent
will have received  certificates of recent date issued by the Secretary of State
of the States of Delaware and Texas with respect to each of the Seller, DSRM and
the Parent, as to the legal existence and good standing of the Seller,  DSRM and
the Parent, respectively.

         SECTION 6.3.10.  Performance  Support  Agreement.   The  Administrative
Agent  will  have  received  a  duly  executed   Performance  Support  Agreement
satisfactory in form and substance to the Administrative Agent.

         SECTION   6.3.11.   Lock-Box  and  Blocked  Account   Agreements.   The
Administrative Agent will have received original Lock-Box Agreements in the form
of Exhibit D and original  Blocked Account  Agreements in the form of Exhibit E,
in each case,  executed by the  Seller,  DSRM,  the  Administrative  Agent,  the
Originators and each Lock-Box Bank and Blocked Account Bank, as applicable.

<PAGE>

         SECTION 6.4. Condition Precedent to All Incremental  Purchases.  Before
any Purchaser will consider making an Incremental  Purchase,  the Administrative
Agent will have received a Receivables  Activity Report in the form of Exhibit F
covering  the period from the date on which the last such  report was  delivered
under  Section 7.4 and the Business Day  preceding  the date of the  Incremental
Purchase.

         SECTION 6.5.  Conditions  Precedent  to  All Purchases.  The following 
conditions  must be satisfied  before any  Purchaser  will  consider  making any
Purchase:

         SECTION 6.5.1.  Representations and Covenants. On and as of the date of
such Purchase (i) the  representations of the Seller in Article IX shall be true
and  correct  with the same  effect as if made on such date and (ii) the  Seller
shall be in compliance with the covenants set forth in this Agreement.

         SECTION 6.5.2.  Notice.  The  Administrative  Agent shall have received
from the Seller,  in fully  completed  form, a notice under Section 6.2(a) as to
the offer to sell an Ownership Interest in the Receivables (if it is the Initial
Purchase or an Incremental Purchase).

         SECTION 6.5.3.  Other Documents.  The Administrative Agent and each of
the  Purchasers  will have  received  all other  documents  that any of them had
reasonably requested from the Seller.

                       ARTICLE VII: SETTLEMENT PROCEDURES

         SECTION 7.1.  Settlement Date.  Each of the following shall
constitute a Settlement Date:

         (a)      the first Business Day of each month;

         (b) each day  designated  as a  Settlement  Date by the  Administrative
Agent;  provided,  however, that Administrative Agent shall not cause Settlement
Dates to occur on a basis more  frequent  than weekly  unless either an Event of
Liquidation has occurred or
a Purchaser is itself being liquidated;

         (c) each Business Day on which the  Investment is reduced in accordance
with Section 3.1 or 6.2;

         (d) any date on which a  reduction  in the  Investment  is  required to
prevent the Aggregate  Ownership  Interest from exceeding the Maximum  Ownership
Interest; and

<PAGE>

         (e) each date on which any payment  due to a Purchaser  from the Seller
under Article XI has not been made.

         SECTION 7.2.  Application of Collections.  The  Collection  Agent  will
apply the Collections as provided in Sections 7.2.1 and 7.2.2, as applicable.

         SECTION  7.2.1.  Application  of  Collections  on  Days  That  Are  Not
Settlement  Dates.  The Collection Agent will, by 2:00 P.M. (New York City time)
on any  Business  Day  (other  than a  Settlement  Date),  since  the  preceding
Settlement Date, from Collections received on such day:

         (a)      first, pay  to the Seller for  its share  of ownership  in the
                  Collections an amount equal to the product of: (i) 1 minus the
                  Aggregate Ownership Interest and (ii) total Collections; and

         (b)      second,  pay to the  Seller  for a  Reinvestment  Purchase  an
                  amount  equal to the product of: (i) the  Aggregate  Ownership
                  Interest and (ii) total Collections less the amounts described
                  in Section 7.2.2(b)(i).

         SECTION 7.2.2.  Application of  Collections  on Settlement  Dates.  The
Collection  Agent  will,  by 3:00 P.M.  (New York City time) on each  Settlement
Date, from Collections received since the preceding Settlement Date:

         (a)      first,  pay  to the  Seller for  its share of ownership in the
                  Collections an amount equal to the product of: (i) 1 minus the
                  Aggregate Ownership Interest and (ii) total Collections; and

         (b)      second,  from the Purchasers'  Aggregate Ownership Interest in
                  the Collections, pay:

                  (i)      first, to the Administrative Agent for the account of
                           the Purchasers  according to their respect  interests
                           therein an amount  equal to the sum of the  following
                           amounts for each day in the Settlement Period:

                   [(PD + PP + OEF + CAF)  x CPI]  +  [(PD +AA +  CAF) x BPI]
                     -------------------                --------------
                               360                          360

                  where     PD       =     Purchase Discount

                            PP       =     Purchase Premium

                            OEF      =     Operating Expense Fee

                            CAF      =     Collection Agent Fee

                            AA       =     Administration Fee

                            CPI      =     the Conduit Purchaser's Investment

                            BPI      =     the Back-Stop Purchaser's Investment

                  (ii)     second,

                           (A)  if Reinvestment Purchases  have been  suspended,
                                then all remaining  Collections will  be paid to
                                the  Purchasers  ratably   according   to  their
                                respect Investments as a return thereof; or

                           (B)  if  Reinvestment  Purchases have  not  been sus-
                                pended,  then all remaining Collections shall be
                                paid to the Seller for Reinvestment Purchases.

         SECTION 7.3.  Adjustments, Etc.

         (a) The  Collection  Agent  shall  not  include  any  Receivable  as an
Eligible  Receivable if (i) the representation and warranty contained in Section
9.1(f) is no longer true with respect to any  Receivable  in which any Purchaser
has an Ownership Interest or (ii) the Seller or Collection Agent proposes to (x)
reduce or cancel the outstanding  balance of any Receivable in which a Purchaser
has an  Ownership  Interest  as a result  of  defective,  rejected  or  returned
merchandise  or  services  or in  connection  with a claim,  dispute,  or offset
asserted against such Receivable by an Obligor or (y) otherwise amend, modify or
waive any term or condition of such Receivable (other than in a manner that does
not  affect  the aging or  impair  the  collectibility  of such  Receivable  and
otherwise is in accordance with the Credit and Collection Policies).

         (b) On or before the Settlement  Date next succeeding the date on which
any Receivable is affected as described in the preceding  clause (a), the Seller
shall either:

         (i)  pay to  the  Collection  Agent  to  be applied  in accordance with
     Section 7.2  an amount  equal to the outstanding balance of such Receivable
     (or any affected portion thereof); or

<PAGE>

         (ii) adjust the  Aggregate Ownership Interest in effect on such date by
     decreasing "Net ER" in the denominator of the fraction described in Section
     3.1(a)  by the outstanding   balance  of  the  affected  Receivable (or any
     affected portion thereof) so long as the Aggregate Ownership Interest would
     not, as a result, exceed the Maximum Ownership Interest.

         SECTION 7.4.  Receivables  Activity  Report.  The Collection Agent will
provide the  Administrative  Agent with a Receivables  Activity  Report no later
than three (3) Business Days following  each  Settlement  Date. The  Receivables
Activity  Report  will be in the  form of  Exhibit  F and  will  cover  the most
recently completed Settlement Period.

             ARTICLE VIII: ADMINISTRATIVE AGENT AND COLLECTION AGENT

         SECTION 8.1.  Appointment of  Administrative  Agent. Each Purchaser has
appointed  CIBC  as  its  Administrative  Agent.  The  Administrative  Agent  is
responsible  for  administering  and enforcing this Agreement and fulfilling all
other duties  expressly  assigned to it in this  Agreement.  Each  Purchaser has
granted the Administrative  Agent the authority to take all actions necessary to
assure the Seller's  compliance with the terms of this Agreement and to take all
actions  required or  permitted to be  performed  by such  Purchaser  under this
Agreement.

         SECTION 8.1.1  Replacement of  Administrative  Agent.  Either Purchaser
may, at any time in its  discretion,  upon 120 days prior written  notice to the
Administrative Agent and the Seller, remove the Administrative Agent and appoint
a new  Administrative  Agent acceptable to all Purchasers,  which shall have the
duties described in Section 8.1. Such appointment of a successor  Administrative
Agent shall be effective upon the  acceptance by such  successor  Administrative
Agent of all of the duties and  obligations  of the  Administrative  Agent under
this Agreement. The appointment of a new Administrative Agent shall not increase
any of the fees payable under this  Agreement and any expenses  associated  with
such  appointment  shall be paid by the  Purchasers  and/or  the  Administrative
Agent.

         SECTION 8.2.  Appointment of Collection Agent.

         (a)  Each  Purchaser  appoints  DSRM as its  Collection  Agent  and the
Collection  Agent  accepts  such  appointment.  The  Collection  Agent  shall be
responsible for collecting the Receivables,  tracking, holding and remitting the
Collections  and  fulfilling all other duties  expressly  assigned to it in this
Agreement.

         (b) The Collection  Agent shall,  on each day on which  Collections are
received  by it, set aside and hold in trust for the  Purchasers  their share of
such Collections.

<PAGE>

         (c) Each Purchaser grants the Collection Agent the authority  necessary
to carry out its  duties  under  this  Agreement  for so long as it is acting as
Collection Agent.

         (d) Each Purchaser  grants to each Collection  Agent, for so long as it
is acting in that  capacity,  an  irrevocable  power of  attorney to endorse all
drafts,  checks and other forms of payment made out in the name of the Seller or
any other  Diamond  Shamrock  Entity  and to  settle,  adjust  and  forgive  any
Receivable,  subject to the  provisions  of  Section  10.3(b)  hereof.  Upon any
replacement  of the  Collection  Agent,  such power of  attorney in favor of the
replaced Collection Agent will terminate and have no further force or effect.

         (e)  The  Collection  Agent  shall  exercise  reasonable  care  in  the
performance  of its duties under this Agreement and shall use the same degree of
care and skill which it applies to its own property.

         (f) The  Collection  Agent may  delegate  its duties  hereunder to such
Person as may be approved by the Administrative  Agent upon receipt of 120 days'
prior written notice,  such approval not to be unreasonably  withheld,  but such
delegation  shall neither affect the  obligations of the Collection  Agent under
any of the Sale Documents nor the rights of any Purchaser or the  Administrative
Agent under any of the Sale Documents,  including, without limitation, the right
to replace the Collection Agent pursuant to Section 8.2.1.

         SECTION 8.2.1.  Replacement of Collection Agent; Notification of
Obligors.

         (a) Upon the occurrence of any Event of Liquidation, the Administrative
Agent or any  Purchaser  may upon the provision of three (3) Business Days prior
written  notice  to DSRM  remove  DSRM as its  Collection  Agent,  appoint a new
Collection  Agent,  take  control of the  Lock-Boxes  and Blocked  Accounts  (by
delivering to the LockBox Banks and Blocked  Account  Banks,  notice in the form
attached  to Exhibit D and  Exhibit E, as  applicable),  notify  Obligors of the
Aggregate Ownership Interest in the Receivables and exercise all other incidents
of ownership in the Receivables.

         (b) The Administrative Agent and the Purchasers shall have the right to
remove  any  successor  Collection  Agent to DSRM and to take the other  actions
described in (a) above at any time in their sole discretion.

<PAGE>

         (c) If DSRM is removed as  Collection  Agent,  DSRM shall  transfer and
cause any Person to whom duties of the  Collection  Agent have been delegated by
DSRM pursuant to Section 8.2(f), to transfer, to the Administrative Agent or any
successor  servicer   designated  by  the  Administrative   Agent  all  records,
correspondence and documents  (including  computer tapes or other back-up media)
requested  by the  Administrative  Agent or such  successor  and to permit  such
persons to have access to, and to copy, all data and information used by DSRM in
the collection,  administration  or monitoring of the Receivables.  In addition,
the  Seller or DSRM,  as  applicable,  will  grant or cause to be granted to the
Administrative  Agent or its designee an irrevocable,  non-exclusive  license to
use,  without  royalty or payment of any kind,  all software used by the Seller,
DSRM or any of their Affiliates,  as applicable, to account for the Receivables,
to the extent necessary to administer the Receivables,  whether such software is
owned by the Seller, DSRM or any such Affiliate,  as applicable,  or is owned by
others and used by the Seller, DSRM or any such Affiliate, as applicable,  under
license  agreements with respect thereto,  provided,  that should the consent of
any licensor of the Seller, DSRM or any such Affiliate,  as applicable,  to such
grant of the license  described herein be required,  each of the Seller and DSRM
hereby agrees,  upon the request of the  Administrative  Agent,  to use its best
efforts to obtain the consent of such third-party licensor.  Any license granted
hereby  shall  be  irrevocable,  and  shall  terminate  on the  date  after  the
Termination  Date on which the  Aggregate  Ownership  Interest  shall  have been
reduced to zero.

                   ARTICLE IX: REPRESENTATIONS AND WARRANTIES

         SECTION  9.1.  Representations  and  Warranties  of the  Seller and the
Collection  Agent.  Each of the  Seller and the  Collection  Agent  makes,  with
respect  to  itself,  the  following   representations  and  warranties  to  the
Purchasers and the Administrative Agent:

         (a) The Seller is a limited  liability company and the Collection Agent
is a corporation duly organized, validly existing and in good standing under the
laws of their respective jurisdiction of organization and each is duly qualified
in good standing in each jurisdiction where the failure to be so qualified could
materially adversely affect its ability to perform its obligations hereunder.

         (b) The  execution,  delivery  and  performance  by the  Seller and the
Collection Agent of the Sale Documents to which they are party, and the Seller's
use of the proceeds of the Purchases, are within the Seller's and the Collection
Agent's respective company or corporate powers, have been duly authorized by all
necessary  corporate  or company  action,  do not  contravene  (i) the  Seller's
certificate  of formation  or operating  agreement,  or the  Collection  Agent's
certificate of incorporation or by-laws,  or (ii) applicable law or any material
contractual  restriction  binding on the Seller or the Collection  Agent, and do
not result in or require the creation of any lien (other than  pursuant  hereto)
upon or with respect to any of their respective  properties;  and no transaction
contemplated hereby requires compliance with any bulk sales act or similar law.

<PAGE>

         (c) No  authorization  or approval or other action by, and no notice to
or filing with, any  governmental  authority or regulatory  body is required for
the due  execution,  delivery and  performance  by the Seller or the  Collection
Agent of the Sale Documents,  or for the perfection of the Purchasers' Aggregate
Ownership  Interest  in the  Receivables,  or  exercise  by the  Seller,  of the
Seller's rights and remedies under the Trade Receivables Sale Agreement,  except
for the filing of the financing statements referred to in Section 6.3.4.

         (d) The Sale  Documents,  when executed and delivered by the Seller and
the Collection  Agent,  will be the legal,  valid and binding  obligation of the
Seller and the Collection  Agent,  respectively,  enforceable in accordance with
their  terms,  except  as  such  enforceability  may be  limited  by  applicable
bankruptcy, insolvency, reorganization,  moratorium or other similar laws now or
hereafter in effect affecting the enforcement of creditors' rights generally and
except as may be limited by general principles of equity (whether  considered in
a suit at law or in equity).

         (e) There is no pending, or to the knowledge of the Seller, threatened,
action or proceeding  affecting the Seller or the Collection Agent or any of its
subsidiaries  before  any  court,  governmental  agency or  arbitrator  which is
reasonably likely to materially  adversely affect (i) its financial condition or
operations  or (ii) its  ability  to  perform  its  obligations  under  the Sale
Documents,  or which is reasonably  likely to affect the  legality,  validity or
enforceability of any Sale Document or of the Aggregate Ownership Interest.

         (f) The  Seller is the legal and  beneficial  owner of the  Receivables
free and clear of any lien, security interest,  claim or encumbrance,  except as
created by this Agreement or the Trade  Receivables  Sale  Agreement;  upon each
Purchase, the Administrative Agent, on behalf of the applicable Purchaser,  will
acquire  a  valid  and  perfected  first  priority  ownership  interest  in  the
Receivables,  then existing or thereafter  arising and in the  Collections  with
respect  thereto,  free  and  clear of any  lien,  security  interest,  claim or
encumbrance,  except as created by this Agreement and the Trade Receivables Sale
Agreement.

<PAGE>

         (g) The information  provided by the Seller to the Collection Agent for
use in each  Receivables  Activity  Report  prepared  under  Section 7.4 and all
written  information and Sale Documents furnished or to be furnished at any time
by the Seller to the  Administrative  Agent in connection with this Agreement is
or will be accurate in all material  respects as of their respective  dates, and
no such  document  will contain any untrue  statement of a material fact or will
omit to  state  a  material  fact  necessary  to make  any  such  statement  not
materially misleading.

         (h) Each  Receivables  Activity Report and any other report prepared by
the Collection Agent pursuant to this Agreement will be accurate in all material
respects as of its date, and no such document will contain any untrue  statement
of a material fact or will omit to state a material  fact  necessary to make any
such report not materially misleading.

         (i) The  chief  place of  business  and chief  executive  office of the
Seller  and the  office  where the  Seller  keeps  its  records  concerning  the
Receivables and the chief place of business and chief  executive  offices of the
Originators and the offices where the Originators keep their records  concerning
the Receivables are located at the addresses specified on Schedule E.

         (j) The names and addresses of the Lock-Box  Banks and Blocked  Account
Banks,  together with the account  numbers of each related  Lock-Box and Blocked
Account  are  specified  in  Schedule C and  Schedule D hereto (or at such other
Lock-Box  Banks  or  Blocked   Account  Banks  as  have  been  notified  to  the
Administrative Agent).

         (k) The Parent,  the Seller and DSRM are treating the conveyance of the
Aggregate  Ownership  Interest in the Receivables and the Collections  under the
Sale  Documents  as  a  sale  for  purposes  of  generally  accepted  accounting
principles.

         (l) Each  Plan is in  compliance  with all of the  applicable  material
provisions of ERISA and each Plan intended to be qualified  under Section 401(a)
of the  Code is so  qualified.  No Plan has  incurred  an  "accumulated  funding
deficiency"  (within  the  meaning of Section 302 of ERISA or Section 412 of the
Code) whether or not waived. Neither the Seller nor any ERISA Affiliate: (i) has
incurred or expects to incur any liability under Title IV of ERISA, with respect
to any Plan,  which  could give rise to a lien in favor of the PBGC,  other than
liability  for the payment of premiums,  all of which have been timely paid when
due in  accordance  with Section 4007 of ERISA,  (ii) has incurred or expects to
incur any  withdrawal  liability,  within the meaning of Section  4201 of ERISA,
(iii) is subject to any lien under Section 412(n) of the Code or Sections 302(f)
or 4068 of ERISA or arising out of any action  brought  under  Sections  4070 or
4301 of ERISA,  or (iv) is required to provide  security to a Plan under Section
401(a)(29) of the Code. The PBGC has not instituted proceedings to terminate any
Plan  or to  appoint  a  trustee  or  administrator  of  any  such  Plan  and no
circumstances  exist that  constitute  grounds  under  Section  4042 of ERISA to
commence any such
proceedings.

<PAGE>

         (m)  Prior  to a  transfer  pursuant  to  the  Trade  Receivables  Sale
Agreement,  DSRM shall be the legal and beneficial owner of the Receivables sold
by DSRM to the Seller pursuant to the Trade  Receivables Sale Agreement free and
clear of any lien,  security  interest or  encumbrance  except as created by the
Transfer  Agreement,  and the Trade  Receivables Sale Agreement is effective to,
and shall,  transfer to the Seller (and the Seller shall  acquire) from DSRM all
right,  title and interest of DSRM in each such Receivable and Collections  with
respect  thereto free and clear of any lien,  security  interest or  encumbrance
except as created by the Transfer Agreement.

         (n) Each of Originators have complied in all material respects with the
Credit and Collection  Policies with respect to any  Receivable  sold by DSRM to
the Seller pursuant to the Trade Receivables Sale Agreement.

         (o) With  respect to each  Receivable  sold by DSRM to the Seller,  the
Seller  shall  have  paid or  promised  to pay to DSRM at the time of such  sale
reasonably equivalent value in consideration of the transfer of such Receivable.

         (p) The  Collection  Agent (i) has completed a review and assessment of
all computer applications (including, but not limited to those of its suppliers,
vendors,  customers  and any third  party  servicers),  which are  related to or
involved  in  the  origination,  collection,  management  or  servicing  of  the
Receivables  (the  "Receivable  Systems")  and (ii)  has  determined  that  such
Receivable  Systems  are (or will be on or before  November  30,  1999)  able to
recognize and perform properly date-sensitive  functions involving certain dates
prior to and any date after December 31, 1999 ("Year 2000 Compliant"). The costs
of  all  assessment,   remediation,  testing  and  integration  related  to  the
Collection  Agent's  plan  for  becoming  Year  2000  Compliant  will  not  have
materially and adversely  affect the  collectibility  of the  Receivables or the
business or operations of the Seller, DSRM or the Parent.

                              ARTICLE X: COVENANTS

         SECTION 10.1.  Affirmative  Covenants of the Seller and the  Collection
Agent. Until the Aggregate Ownership Interest is reduced to zero as described in
Section 3.1(c) and no further  Purchases are to be made,  each of the Seller and
the Collection  Agent (with respect to itself) will,  unless the  Administrative
Agent on behalf of the Purchasers, has otherwise consented in writing:

<PAGE>

         (a) Comply in all material  respects with all applicable  laws,  rules,
regulations  and orders with respect to it, its business and  properties and all
Receivables and Collections.

         (b) Maintain its existence as a limited  liability company (in the case
of the Seller) or corporation (in the case of the Collection Agent) in the State
of  Delaware,  and  qualify  and  remain  qualified  in  good  standing  in each
jurisdiction  where the failure to be so qualified  could  materially  adversely
affect its ability to perform its obligations hereunder.

         (c) At any reasonable  time,  subject to reasonable prior notice of not
less than two (2) Business Days (or one Business Day if the Administrative Agent
is investigating a potential Event of Liquidation),  permit any Purchaser or its
agents or representatives to visit and inspect any of its properties, to examine
its  books of  account  and other  records  and files  relating  to  Receivables
(including,  without  limitation,  computer  tapes and disks) and to discuss its
affairs, business,  finances and accounts as they relate to the Receivables with
its officers and employees.

         (d) Maintain and  implement  administrative  and  operating  procedures
(including,  without  limitation,  an ability to recreate records evidencing the
Receivables in the event of the destruction of the originals thereof),  and keep
and  maintain  all  records  and  other  information,  reasonably  necessary  or
advisable for the  collection of  Receivables  (including,  without  limitation,
records  adequate  to permit the daily  identification  of  Receivables  and all
Collections and adjustments to Receivables).

         (e) At its expense  timely and fully perform and comply in all material
respects with all material  provisions and covenants  required to be observed by
the Seller under the contracts related to the Receivables.

         (f) Keep the Seller's places of business and chief executive office (if
the Seller has more than one place of  business)  and the office  where it keeps
the originals of its records  concerning the Receivables at the addresses listed
on  Schedule  E  or,  upon  thirty  (30)  days  prior  written   notice  to  the
Administrative  Agent,  at any other  location in a  jurisdiction  where all UCC
financing  statements,  and such other  instruments  and documents,  that may be
necessary or desirable,  or any Purchaser or that the  Administrative  Agent may
reasonably  request,  to perfect,  protect or evidence the  Aggregate  Ownership
Interest have been filed.

         (g) Comply in all  material  respects  with the  Credit and  Collection
Policies  in  regard  to  each  Receivable  and  any  contract  related  to such
Receivable.

<PAGE>

         (h) Instruct all Obligors to cause all  Collections  to be deposited or
electronically transferred directly into a Lock-Box or a Blocked Account.

         (i) File and  maintain in effect all  filings,  and take all such other
actions,  as may be  necessary to protect the  validity  and  perfection  of the
Aggregate Ownership Interest in Receivables.

         (j) Cause each Plan to comply with all applicable provisions of ERISA.

         (k) Not (i) permit any  accumulated  funding  deficiency (as defined in
Section  302 of ERISA or Section  412 of the Code) to exist with  respect to any
Plan,  whether or not waived,  (ii) fail, or permit any ERISA Affiliate to fail,
to pay any required  installment or any other payment required under Section 412
of the  Code  with  respect  to any  Plan on or  before  the due  date  for such
installment or other payment, (iii) terminate,  or permit any ERISA Affiliate to
terminate,  any Plan which would  result in any  liability  of the Seller or any
ERISA  Affiliate  under Title IV of ERISA,  (iv) take any action or fail to take
any action, or permit any ERISA Affiliate to take any action or fail to take any
action,  with respect to any multiemployer  plan (as defined in Section 3(37) of
ERISA)  that will  result in  withdrawal  liability  of the  Seller or any ERISA
Affiliate,  or (v)  amend,  or permit  any  ERISA  Affiliate  to  amend,  a Plan
resulting  in an  increase  in  liabilities  such  that the  Seller or any ERISA
Affiliate is required to provide security to such Plan under Section  401(a)(29)
of the Code.

         (l) Treat the  conveyance  of the Aggregate  Ownership  Interest in the
Receivables  and  the  Collections  under  this  Agreement  and the  other  Sale
Documents as a sale for purposes of generally accepted accounting principles.

         (m) The Seller hereby  acknowledges  that the  Purchasers  are entering
into the  transactions  contemplated  by this  Agreement  in  reliance  upon the
Seller's  identity as a separate  legal entity from the DSRM,  the Parent or any
Diamond Shamrock Entity (as defined below).  Therefore,  from and after the date
of  execution  and  delivery  of this  Agreement,  the  Seller  shall  take  all
reasonable steps including,  without limitation, all steps that any Purchaser or
the  Administrative  Agent may from time to time reasonably  request to maintain
the  Seller's  identity  as a separate  legal  entity and to make it manifest to
third parties that the Seller is an entity with assets and liabilities  distinct
from those of DSRM,  the  Parent  and any  Affiliates  (other  than the  Seller)
thereof  (individually a "Diamond Shamrock Entity" and collectively the "Diamond
Shamrock  Entities"),  and not just a division of any Diamond  Shamrock  Entity.
Without  limiting  the  generality  of  the  foregoing  and in  addition  to and
consistent with the covenant set forth in paragraph (b) above, the Seller shall:

<PAGE>

         (i)  require  that  all  full-time  employees  of the  Seller  identity
         themselves as such and not as employees of any Diamond  Shamrock Entity
         (including,  without  limitation,  by  means of  providing  appropriate
         employees  with  business  or  identification  cards  identifying  such
         employees as the Seller's employees);

         (ii)  compensate  all  employees,  consultants  and agents for services
         provided to the Seller by such  employees,  consultants and agents and,
         to the extent any  employee,  consultant or agent of the Seller is also
         an  employee,  consultant  or agent  of any  Diamond  Shamrock  Entity,
         allocate the compensation of such employee, consultant or agent between
         the Seller and such Diamond  Shamrock  Entity on a basis which reflects
         the services rendered to the Seller and such Diamond Shamrock Entity;

         (iii)  clearly  identify  its  offices (by signage or otherwise) as its
         offices;

         (iv) allocate all overhead  expenses  (including,  without  limitation,
         telephone  and other  utility  charges)  for items  shared  between the
         Seller and any  Diamond  Shamrock  Entity on the basis of actual use to
         the extent  practicable  and,  to the  extent  such  allocation  is not
         practicable, on a basis reasonably related to actual use;

         (v) ensure that all material company actions are duly authorized by its
         Board of Management;

         (vi)  maintain  the  Seller's  books  and  records  separate  from  the
         individual books and records of any other Diamond Shamrock Entity;

         (vii) if required by generally accepted accounting principles,  prepare
         its  financial  statements  separately  from  those  of  other  Diamond
         Shamrock  Entities  and,  to the extent  included  in the  consolidated
         financial  statements of the Diamond Shamrock  Entities,  indicate that
         the  Seller  is a limited  liability  company  separate  from the other
         Diamond  Shamrock  Entities  included  in such  consolidated  financial
         statements; and

         (viii) not commingle  funds or other assets of the Seller with those of
         any other  Diamond  Shamrock  Entity and not  maintain  bank  accounts
         or other depository accounts to which any other Diamond Shamrock Entity
         is an account party, into which any other Diamond Shamrock Entity makes
         deposits or from which any other Diamond Shamrock Entity has the power
         to make withdrawals.

<PAGE>

         (n) With respect to each Receivable sold by DSRM to the Seller,  pay to
DSRM  reasonably  equivalent  value in  consideration  of the  transfer  of such
Receivable.

         (o)  Request  that  DSRM hold in trust  and  promptly  turn over to the
Collection Agent any Collections received by DSRM on the Seller's behalf.

         (p) The Collection Agent will promptly notify the Administrative  Agent
in the event the  Collection  Agent  discovers or  determines  that any computer
application  (including  those of its suppliers,  vendors and customers) that is
necessary  for the  origination,  collection,  management,  or  servicing of the
Receivables  will not be Year 2000  Compliant  on or before  November  30, 1999.
Further, the Collection Agent will deliver  simultaneously with any quarterly or
annual financial  statements or reports to be delivered under this Agreement,  a
report  signed by an  appropriate  officer that no material  event,  problems or
conditions  have occurred  which in the opinion of  management  would prevent or
materially delay the Collection Agent's plan to become Year 2000 Compliant.

         SECTION 10.2. Reporting Requirements of the Seller. Until the Aggregate
Ownership  Interest is reduced to zero and no further  Purchases are to be made,
the Seller  will,  unless the  Purchasers  shall  otherwise  consent in writing,
furnish to the  Administrative  Agent for each Purchaser (or, in the case of (f)
below, assist the Collection Agent in furnishing to the Administrative Agent for
each Purchaser):

         (a) (i)  promptly  and in any event  within 30 Business  Days after the
Seller or any ERISA  Affiliate  knows or has  reason to know that a  "reportable
event" (as defined in Section  4043 of ERISA) has  occurred  with respect to any
Plan and for which  notice to the PBGC has not been  waived  by  regulations,  a
statement  of an  officer  of  the  Seller  setting  forth  details  as to  such
reportable  event and the action that the Seller or an ERISA Affiliate  proposes
to  take  with  respect  thereto,  together  with a copy of the  notice  of such
reportable event, if any, given to the PBGC, the Internal Revenue Service or the
Department  of Labor;  (ii)  promptly and in any event within ten (10)  Business
Days  after  receipt  thereof,  a copy of any  notice  the  Seller  or any ERISA
Affiliate  may receive  from the PBGC  relating to the  intention of the PBGC to
terminate  any Plan or to appoint a trustee to administer  any such Plan;  (iii)
promptly and in any event within ten (10)  Business Days after a filing with the
PBGC  pursuant  to  Section  412(n) of the Code of a notice of failure to make a
required  installment or other payment with respect to a Plan, a statement of an

<PAGE>

officer of the Seller  setting  forth  details as to such failure and the action
that the Seller or an ERISA  Affiliate  proposes to take with  respect  thereto,
together with a copy of such notice given to the PBGC;  and (iv) promptly and in
any event within thirty (30)  Business Days after receipt  thereof by the Seller
or any ERISA Affiliate from the sponsor of a  multiemployer  plan (as defined in
Section  3(37) of ERISA),  a copy of each  notice  received by the Seller or any
ERISA  Affiliate   concerning  the  imposition  of  withdrawal  liability  or  a
determination  that a multiemployer plan is, or is expected to be, terminated or
reorganized;

         (b) as soon as possible and in any event within three (3) Business Days
after the occurrence of any Event of Liquidation, written notice of such event;

         (c) as soon as  possible  and in any event with five (5) days after the
occurrence  thereof,  written  notice of any  material  change in the Credit and
Collection Policies;

         (d) such other  information,  documents,  records or reports respecting
(i) the Receivables as the Purchaser may from time to time reasonably request or
(ii) in connection with any of the  transactions  contemplated by this Agreement
or the administration of this Agreement, the condition or operations,  financial
or otherwise, of the Seller or any of its subsidiaries as the Purchaser may from
time to time reasonably request; and

         (e) together with each Receivables Activity Report, commencing with the
Receivables  Activity  Report to be  delivered in the month of June,  1999,  and
continuing until such time as all Receivables Systems are Year 2000 Compliant, a
report setting in forth in reasonable  detail the status of efforts to cause all
Receivables Systems to be Year 2000 Compliant; and

         (f) the  Receivables  Activity  Report as required  under  Section 7.4,
together with a  certificate  of an officer of the Seller to the effect that all
of the  representations  and  warranties  contained  in Section 9.1 are true and
correct in all material  respects as of the date of delivery of each Receivables
Activity Report.

         SECTION  10.3.  Negative  Covenants  of the Seller  and the  Collection
Agent. Until the Aggregate  Ownership Interest is reduced to zero and no further
Purchases  are to be made,  neither  the Seller  nor the  Collection  Agent,  as
applicable, will, unless the Purchasers have has otherwise consented in writing:

         (a) Except as provided  herein,  sell,  assign (by  operation of law or
         otherwise)  or  otherwise  dispose of, or create or suffer to exist any
         security  interest,  lien  or  encumbrance upon or with  respect to Re-
         ceivables, Collections or any Lock-Box or Blocked Account or assign any
         right to receive income in respect thereof.

<PAGE>

         (b) Amend or otherwise  modify the terms of any  Receivable,  or amend,
         modify or waive any term or condition of any contract  related  thereto
         other than in accordance  with the Credit and  Collection  Policies and
         this Agreement.

         (c) Make any change in the  character  of its business or in the Credit
         and  Collection  Policies  which would,  in either case,  be reasonably
         likely  to  impair  the   collectibility   or  credit  quality  of  any
         Receivables.

         (d) Add or  terminate  any bank as a Lock-Box  Bank or Blocked  Account
         Bank from those  listed on Schedule C and D hereto,  or make any change
         in its  instructions to Obligors  regarding  payments to be made to the
         Seller or payments to be made to any Lock-Box  Bank or Blocked  Account
         Bank, unless the Purchaser shall have received notice of such addition,
         termination or change, and with respect to the addition of any Lock-Box
         Bank,  a  Lock-Box  Bank  Agreement  in the form of  Exhibit  D or with
         respect to the addition of any Blocked  Account Bank, a Blocked Account
         Agreement  in the form of Exhibit E  executed  by, as  applicable,  the
         Seller,  DSRM,  the  Administrative  Agent  and such  Lock-Box  Bank or
         Blocked  Account Bank shall have been  delivered to the  Administrative
         Agent,  in each case not later  than the  Settlement  Date  immediately
         following the end of the calendar quarter in which such event occurred.

         (e) Deposit or otherwise  credit, or cause or permit to be so deposited
         or credited,  to any Lock-Box or Blocked  Account cash or cash proceeds
         other than Collections.

         (f) Amend or waive any provision of the Transfer Agreement or the Trade
         Receivables Sale Agreement.

         (g)  In the  case  of the  Seller,  enter  into  or be a  party  to any
         agreement or instrument, other than in the ordinary course of business,
         and other  than  this  Agreement,  the  Transfer  Agreement,  the Trade
         Receivables Sale Agreement, the Credit Card Receivables Sale Agreement,
         the Credit Card  Receivables  Purchase  Agreement,  and each "Revolving
         Note" (as  defined  in the Trade  Receivables  Sale  Agreement  and the
         Credit Card Receivables Sale Agreement, respectively), or amend, modify
         or waive any provision in any thereof,  or give any approval or consent
         or permission provided for in any thereof;

<PAGE>

         (h) In the case of the Seller,  engage in any business or enterprise or
         enter  into  any  transaction   other  than  as  contemplated  by  this
         Agreement,   the  Transfer   Agreement,   the  Trade  Receivables  Sale
         Agreement,  the Credit Card  Receivables  Sale Agreement and the Credit
         Card Receivables Purchase Agreement; or

         (i) Amend the Certificate of Formation or Limited  Liability  Agreement
         of the Seller in any manner  which  requires  unanimous  consent of the
         Board of Management  thereof or which causes any other material  change
         therein.

           ARTICLE XI: INDEMNIFICATIONS; INCREASED COSTS; TAX MATTERS

         SECTION 11.1. Indemnification by Seller of the Purchasers, etc. Without
limiting any other rights which the  Purchasers,  the  Administrative  Agent and
their respective officers, directors, employees, agents, affiliates,  successors
and  assigns may have  hereunder  or under  applicable  law,  the Seller  hereby
indemnifies such parties (each an "Indemnified  Person") and holds them harmless
from and against any and all damages,  losses,  claims,  liabilities and related
costs and expenses  (including  reasonable  attorneys'  fees and  disbursements)
incurred by any of them arising out of or resulting  from this  Agreement or the
purchase by any Purchaser of any Ownership  Interest in Receivables,  including,
without limitation:

         (a) the reliance by the  Administrative  Agent or the Purchasers on any
representation  or warranty  made by the Seller (or any of its  officers) or any
Originator (or any of its officers)  under or in connection with this Agreement,
the Trade  Receivables Sale Agreement or any Sale Document,  which was incorrect
in any material respect when made;

         (b) the  failure by the Seller or the  Collection  Agent to comply with
any covenant set forth in this Agreement, the failure by DSRM to comply with any
covenant set forth in the Trade  Receivables Sale Agreement,  whether as Seller,
Collection  Agent or otherwise and the failure by any  Originator to comply with
any
covenant set forth in the Transfer Agreement;

         (c) the failure to vest and maintain in each Purchaser,  or to transfer
to the Purchasers,  legal and equitable title to, and ownership of, an undivided
percentage  ownership interest (to the extent of the Ownership  Interest) in the
Receivables, free and clear of any security interest, lien, claim or encumbrance
other than any in favor of the Administrative Agent or any Purchaser that may be
created under this Agreement;

<PAGE>

         (d)  the transfer by the  Seller of an  undivided  percentage ownership
interest in any Receivables other than the Ownership Interest;

         (e)  the Seller's use of proceeds of the Purchases;

         (f) the return or  transfer by the  Collection  Agent of any portion of
Collections  allocable  to the  Ownership  Interest  to the  Seller or any other
person for any reason whatsoever, which Collections belong to each Purchaser;

         (g) the failure  timely to file  financing  statements or other similar
instruments  or documents  under the Uniform  Commercial  Code of any applicable
jurisdiction or other applicable laws with respect to any  Receivables,  whether
at the time of a Purchase or otherwise;

         (h) any dispute, claim, offset or defense of any Obligor to the payment
of any Receivable (including a defense based on such Receivable's or the related
contract's  not being a legal,  valid and  binding  obligation  of such  Obligor
enforceable  against  it in  accordance  with its  terms),  or any  other  claim
resulting  from the sale,  use,  operation  or  ownership  of or  defects  in or
breaches of warranties with respect to, the merchandise or services  relating to
such  Receivable  or the  furnishing or failure to furnish such  merchandise  or
services;

         (i) the Seller's or any Originators' failure to pay when due any taxes,
(including sales,  excise or personal property taxes) payable in connection with
the Receivables;

         (j)  the commingling of Collections with other funds of the Seller;

         (k) the  failure by the Seller or the  Originators  to comply  with any
applicable  law,  rule or  regulation  with  respect to any  Receivable,  or the
nonconformity   of  any  Receivable  with  any  such  applicable  law,  rule  or
regulation; or

         (l) the failure to vest in the Seller all right,  title and interest in
the  Receivables  purchased  by the  Seller  from  DSRM  pursuant  to the  Trade
Receivables Sale Agreement, free and clear of any security interest, lien, claim
or encumbrance.

If and to the extent that the foregoing undertaking may be unenforceable for any
reason, the Seller hereby agrees to make the maximum contribution to the payment
of the amounts  indemnified  against in this Section  11.1 which is  permissible
under  applicable  law. The obligation of Seller to indemnify as set forth above
shall not include  damages,  losses,  claims,  liabilities  or related  costs or
expenses,  arising  solely  from  (i)  except  as  otherwise  provided  in  this
Agreement,  Receivables becoming Defaulted Receivables pursuant to clause (2) or
(3) of the definition of "Defaulted Receivable", or (ii) the gross negligence or
willful misconduct of an Indemnified Person seeking indemnification.

<PAGE>

         SECTION 11.2.  Indemnification  Due to Failure to Consummate  Purchase.
The Seller will indemnify each Purchaser on demand and hold it harmless  against
all costs (including, without limitation, breakage costs) and expenses resulting
from any failure by the Seller (i) to consummate a Purchase after each Purchaser
has  accepted an offer from the Seller to make such  Purchase or (ii) to fulfill
its  obligations  pursuant to Section 6.3, and each Purchaser will indemnify the
Seller on demand and hold it  harmless  against  all costs  (including,  without
limitation,  breakage costs) and expenses  resulting from any failure by (i) the
Conduit  Purchaser to pay the required  purchase  price after it has accepted an
offer to Purchase  from the Seller,  (ii) the Conduit  Purchaser  to fulfill its
obligations  pursuant to Section 6.2 or (iii) the BackStop  Purchaser to pay the
required  purchase  price  after a  proper  request  from  the  Seller  for such
Purchase.

         SECTION 11.3.  Increased Costs. If due to either:  (i) the introduction
of or any change (including, without limitation, any change by way of imposition
or  increase  of  reserve  requirements)  in or in  the  interpretation  by  any
governmental or regulatory  authority or agency of any law or regulation  (other
than  laws or  regulations  relating  to taxes)  or (ii) the  compliance  by any
Purchaser or any lender under any Liquidity Facility or Credit Facility (each, a
"Conduit  Lender")  with any guideline or request from any central bank or other
governmental authority (whether or not having the force of law), (1) there shall
be an increase in the cost to the Purchaser or such Conduit Lender of accepting,
funding or maintaining any Purchase hereunder, (2) there shall be a reduction in
the amount  receivable  with  regard to any  Purchase or (3) such  Purchaser  or
Conduit  Lender shall be required to make a payment  calculated  by reference to
the  Purchases  made  hereunder  or Purchase  Discount  received by it, then the
Seller  shall,  from  time to time,  within  thirty  (30) days from the date the
Administrative Agent makes demand therefor, pay the Administrative Agent for the
account  of the  applicable  Purchaser  or  Conduit  Lender  (as a  third  party
beneficiary in the case of any Conduit  Lender),  that portion of such increased
costs  incurred,  amounts not  received or required  payment made or to be made,
which  the  Administrative  Agent  reasonably   determines  is  attributable  to
accepting,  funding and maintaining any Purchase hereunder.  In determining such
amount,  the  Administrative   Agent  may  use  any  reasonable   averaging  and
attribution  methods. The applicable Purchaser or Conduit Lender shall submit to
the Seller a certificate as to the existence and amounts of such increased costs
incurred,  amounts not received or receivable or required  payment made or to be
made,   which  cer  tificate  shall,  in  the  absence  of  manifest  error,  be
presumptively  correct for all  purposes.  Any  Affected  Party that incurs such
increased  costs as  described  in this  Section  11.3 shall use its  reasonable
efforts   (consistent   with  its  internal  policy  and  legal  and  regulatory
restrictions) to take such steps as would eliminate or reduce the amount of such
increased costs; provided,  that no such steps shall be required to be taken if,
in the  reasonable  judgment  of  such  Affected  Party,  such  steps  would  be
disadvantageous to such Affected Party.

<PAGE>

         SECTION 11.4.  Increased Capital.  If either (i) the introduction of or
any  change  in or in the  interpretation  by  any  governmental  or  regulatory
authority  or  agency  of any  law  or  regulation  or  (ii)  compliance  by any
Purchaser, the Administrative Agent, any Conduit Lender or any parent company of
the foregoing (each an "Affected  Party") with any guideline or request from any
central bank or other governmental authority (whether or not having the force of
law)  affects or would  affect the amount of capital  required or expected to be
maintained by such Affected Party or such Affected Party  reasonably  determines
that the amount of such capital is  increased by or based upon the  existence of
any  Purchaser's  agreement  to  make  or  maintain  or to  consider  making  or
maintaining  Purchases  hereunder  and other similar  agreements or  facilities,
then,  within  thirty  (30)  days  from  the  date  such  Affected  Party or the
Administrative Agent makes demand therefor,  the Seller shall immediately pay to
such Affected Party (as a third party  beneficiary,  in the case of any Affected
Party other than a Purchaser or the Administrative  Agent) or the Administrative
Agent for the account of such Affected  Party from time to time, as specified by
such Affected Party or the Administrative  Agent,  additional amounts sufficient
to compensate such Affected Party in light of such circumstances,  to the extent
that such Affected Party or the Administrative  Agent on behalf of such Affected
Party  reasonably  determines  such  increase in capital to be  allocable to the
existence  any  agreement  of a Purchaser  hereunder.  A certifi  cate as to the
existence and amounts of such increases shall be submitted to the Seller by such
Affected Party or the  Administrative  Agent,  shall, in the absence of manifest
error,  be  presumptively  correct for all purposes.  Any Affected Party that is
entitled to  compensation  for increases in capital as described in this Section
11.4 shall use its reasonable  efforts  (consistent with its internal policy and
legal and  regulatory  restrictions)  to take such steps as would  eliminate  or
reduce the amount of such  compensation;  provided,  that no such steps shall be
required to be taken if, in the reasonable judgment of such Affected party, such
steps would be disadvantageous to such Affected Party.

<PAGE>

         SECTION 11.5.  Taxes.  (a)  Any and  all payments and deposits required
to be made hereunder or under any instrument  delivered  hereunder by the Seller
shall be made,  in  accordance  with Section 7.2,  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 an Affected  Party,  net income taxes that are imposed by the United
States and  franchise  taxes and similar  taxes and net income  taxes,  that are
imposed on such Affected  Party by the state or foreign  jurisdiction  under the
laws of which such Affected Party is organized or in which it is otherwise doing
business or any  political  subdivision  thereof (all such  non-excluded  taxes,
levies,  imposts,  deductions,   charges,  withholdings  and  liabilities  being
hereinafter referred to as "Taxes"). If the Seller or the Collection Agent shall
be  required  by law to deduct any Taxes  from or in respect of any sum  payable
hereunder to any Affected Party, (i) the Seller shall make an additional payment
to such  Affected  Party,  in an amount  sufficient  so that,  after  making all
required deductions  (including deductions applicable to additional sums payable
under this Section  11.5),  such Affected  Party receives an amount equal to the
sum it would have received had no such  deductions been made, (ii) the Seller or
the Collection  Agent,  as the case may be, shall make such deductions and (iii)
the  Seller  or the  Collection  Agent,  as the case may be,  shall pay the full
amount  deducted  to the  relevant  taxation  authority  or other  authority  in
accordance with applicable law.

         (b) In addition,  the Seller  agrees to pay any present or future stamp
or other  documentary  taxes or any other  excise or property  taxes  charges or
similar  levies  which  arise  from any  payment  made  hereunder  or under  any
instrument  delivered hereunder or from the execution,  delivery or registration
of, or otherwise  with respect to, this  Agreement or any  instrument  delivered
hereunder (hereinafter referred to as "Other Taxes").

         (c) The Seller will  indemnify  each  Affected  Party (as a third party
beneficiary,  in the case of any  Affected  Party other than a Purchaser  or the
Administrative  Agent) for the full amount of Taxes or Other  Taxes  (including,
without  limitation,  any Taxes or Other Taxes  imposed by any  jurisdiction  on
amounts payable under this Section  11.5(c)) paid by such Affected Party 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.  This  indemnification  shall be made within thirty (30) days
from the date the Affected Party makes written demand therefor. A certificate as
to the  existence and amount of such  indemnification  shall be submitted to the
Seller by such Affected Party, setting forth the calculation thereof, and shall,
in the absence of manifest error, be presumptively correct for all purposes.

<PAGE>

         (d) Within thirty (30) days after the date of any payment of Taxes, the
Seller will furnish to the Administrative Agent the original or a certified copy
of a receipt evidencing payment thereof.

         (e)  Any  Affected  Party  that  is  entitled  to  the  payment  of any
additional amount pursuant to this Section 11.5 shall use its reasonable efforts
(consistent  with its internal policy and legal and regulatory  restrictions) to
take such steps as would  eliminate  or reduce the amount of payment;  provided,
that no such steps shall be required to be taken if, in the reasonable  judgment
of such Affected  party,  such steps would be  disadvantageous  to such Affected
Party.

         SECTION 11.6.  Notices.  Each Purchaser  shall notify the Seller within
thirty (30)  Business  Days of its  knowledge of a claim for which it intends to
seek indemnification under Section 11.1 or reimbursement under Section 11.5 from
the  Seller.  The Seller  shall  provide  reasonable  assistance  to the parties
indemnified under Section 11.1, to the extent  reasonably  requested by them, in
any action, suit or proceeding brought by or against them in connection with the
indemnification  granted  herein.  The Seller  hereby  agrees that if it assumes
control of the defense in any action,  suit or proceeding  brought by or against
any Indemnified Party, the outcome of any such proceeding will be subject to the
indemnification provisions of Article XI of this Agreement. Each Purchaser shall
notify the Seller of a claim for which it  intends to seek  reimbursement  under
Sections  11.3 or 11.4 from the Seller;  provided,  however,  that in connection
with any such notice, the applicable  Purchaser shall not be entitled to receive
reimbursement in respect of any otherwise reimbursable amount under Section 11.3
or 11.4 to the extent  that such amount was  incurred  more than sixty (60) days
prior to the date of such notice.

                           ARTICLE XII: MISCELLANEOUS

         SECTION 12.1. Amendments, Etc. No amendment or waiver of, or consent to
the Seller's  departure from, any provision of this Agreement shall be effective
unless  it is in  writing  and  signed  by the  parties  hereto  and  then  such
amendment,  waiver or consent shall be effective  only in the specific  instance
and for the specific purpose for which it was given.

         SECTION 12.2. Notices,  Etc.  All   notices  and  other  communications
provided for hereunder shall,  unless otherwise stated herein,  be in writing or
by a  telecommunications  device capable of creating a written record, and sent,
as to each  party  hereto,  at its  address  set  forth  under  its  name on the
signature pages hereto,  or at such other address as shall be designated by such
party in a written  notice to the other  parties  hereto.  All such  notices and
communications shall be effective (a) upon personal delivery thereof, including,
but not limited to,  delivery by overnight  mail and courier  service,  (b) upon
receipt  after it shall have been mailed by United  States mail,  first class or
certified or registered,  with postage prepaid,  or (c) in the case of notice by
such a telecommunications device, when properly transmitted, except that notices
and  communications  to an Purchaser  pursuant to Section 6.2 shall be effective
when received by such Purchaser.

<PAGE>

         SECTION 12.3.  [Reserved].

         SECTION  12.4.  No  Waiver;  Remedies.  No  failure  on the part of the
Administrative  Agent or any Purchaser to exercise,  and no delay in exercising,
any  right  hereunder  or under  any Sale  Document  shall  operate  as a waiver
thereof;  nor  shall any  single  or  partial  exercise  of any right  hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right.  The remedies  herein  provided are  cumulative  and not exclusive of any
remedies provided by law.

         SECTION 12.5. Binding Effect;  Assignability.  (a) This Agreement shall
be binding  upon and inure to the benefit of the  Seller,  each  Purchaser,  the
Administrative  Agent and their respective  successors and assigns,  except that
the Seller  shall not have the right to assign any interest  herein  without the
prior written consent of each Purchaser and the  Administrative  Agent,  and the
Purchaser  shall not have the  right to assign  any  interest  herein  except in
accordance with paragraph (b) below.  This Agreement shall create and constitute
the continuing  obligation of the parties  hereto in accordance  with its terms,
and shall  remain in full  force and  effect  until  such time as the  Ownership
Interest is reduced to zero and no further  Purchases are to be made;  provided,
however, that rights and remedies of the Purchasers and the Administrative Agent
under  Article XI and  Section  5.4 and the  provisions  of Section  12.11 shall
survive any termination of this Agreement.

         (b) The Conduit  Purchaser may assign its interests  hereunder  without
the  consent of the  Seller,  to CIBC,  any  affiliate  of CIBC,  any  financial
institution  providing  a Liquidity  Facility or Credit  Facility or any vehicle
organized by CIBC or by any  affiliate  thereof.  Any  Purchaser  may assign its
interests  hereunder  to any other  Person  with the prior  written  consent  of
Seller, such consent not to be unreasonably  withheld.  Upon any assignment by a
Purchaser,  the assignee shall become the owner of the  Purchaser's  interest in
the Receivables purchased hereunder for all purposes of this Agreement. Upon any
assignment,  the assignee thereof shall have all the rights and obligations of a
Purchaser  under  this  Agreement,  and shall be  subject  to the same terms and
conditions of this Agreement. The parties to this Agreement acknowledge that the
Conduit  Purchaser  has  assigned  and shall be  permitted to continue to assign
(without  consent) to CIBC, as collateral agent for the benefit of the holder of
the debt instruments issued by the Conduit Purchaser, a security interest in all
of the Conduit  Purchaser's  right,  title and  interest in and to,  among other
things,  all rights of the Conduit  Purchaser in and to this Agreement and other
securitization  agreements  entered  into by the  Conduit  Purchaser  with other
sellers and the assets purchased from or assigned by such other sellers pursuant
thereto.

<PAGE>

         SECTION 12.6.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

         SECTION 12.7. Construction of the Agreement.  The parties hereto intend
that the conveyance of the Ownership  Interest in the  Receivables by the Seller
to the Purchasers  shall be treated as sales for purposes of generally  accepted
accounting principles.  If, despite such intention, a determination is made that
such  transactions  shall not be treated as sales,  then this Agreement shall be
interpreted  to constitute a security  agreement and the  transactions  effected
hereby shall be deemed to  constitute a secured  financing by the  Purchasers to
the Seller under  applicable law. For such purpose,  the Seller hereby grants to
the Administrative Agent for the benefit of the Purchasers a continuing security
interest  to the  extent  of such  Ownership  Interest  in the  Receivables  and
Collections to secure the obligations of the Seller to the Purchasers hereunder.

         SECTION 12.8. No Proceedings.  The Seller, the Back-Stop Purchaser, the
Administrative  Agent and the  Collection  Agent each hereby agrees that it will
not  institute  against the Conduit  Purchaser any  bankruptcy,  reorganization,
insolvency  or  similar  proceeding  under any  federal or state  bankruptcy  or
similar law, for one year and a day after the latest maturing  commercial  paper
note  or other rated indebtedness (whether or not issued to fund the purchase or
maintenance of the Ownership Interest hereunder) issued by the Conduit Purchaser
is paid.

         SECTION 12.9.  Confidentiality.  The Purchasers and the  Administrative
Agent agree to maintain the  confidentiality  of any  information  regarding the
Seller, the Collection Agent or the Receivables  obtained in accordance with the
terms of this Agreement  which is not publicly  available,  but any Purchaser or
the  Administrative  Agent may reveal such information (a) to applicable  rating
agencies, liquidity providers and credit providers, provided that such liquidity
providers and credit  providers  agree to maintain the  confidentiality  of such
information on the same terms that Purchaser is required to do so hereunder, (b)
as reasonably  necessary or appropriate in connection with the administration or
enforcement  of this  Agreement,  (c) as reasonably  necessary or appropriate in
connection with its funding of purchases under this Agreement, provided that any
private third parties to whom such  information  is disclosed  agree to maintain
the  confidentiality  of such  information on the same terms as the Purchaser is
required to do so  hereunder,  (d) as required  by law,  government  regulation,
court proceeding or subpoena or (e) to bank regulatory agencies and examiners.

         SECTION  12.10.  Execution  in  Counterparts.  This  Agreement  may  be
executed  in any  number of  counterparts  and by  different  parties  hereto in
separate  counterparts,  each of which when so executed shall be deemed to be an
original and all of which when taken together shall  constitute one and the same
agreement.

         SECTION 12.11.  Severability  Clause.  Any provisions of this Agreement
which are prohibited or  unenforceable  in any  jurisdiction  shall,  as to such
jurisdiction,   be   ineffective   to  the   extent  of  such   prohibition   or
unenforceability  without  invalidating the remaining provisions hereof, and any
such prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

         SECTION 12.12.  SUBMISSION TO JURISDICTION; APPOINTMENT OF
AGENT TO ACCEPT SERVICE OF PROCESS.

         (A)  THE  SELLER  AND  THE  COLLECTION   AGENT  HEREBY  SUBMIT  TO  THE
NONEXCLUSIVE  JURISDICTION  OF THE  COURTS  OF THE  STATE OF NEW YORK AND OF ANY
FEDERAL COURT  LOCATED IN SUCH STATE IN ANY ACTION OR PROCEEDING  ARISING OUT OF
OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS  CONTEMPLATED  HEREBY. EACH OF
THE SELLER AND THE COLLECTION  AGENT  IRREVOCABLY  WAIVES ANY OBJECTION WHICH IT
MAY HAVE TO THE  LAYING OF VENUE OF ANY SUCH  PROCEEDING  AND ANY CLAIM THAT ANY
SUCH PROCEEDING HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.

<PAGE>

         (B)  EACH  OF THE  SELLER  AND THE  COLLECTION  AGENT  HAS  IRREVOCABLY
APPOINTED CT CORPORATION SYSTEM AS ITS AGENT TO RECEIVE,  ACCEPT AND ACKNOWLEDGE
FOR AND ON ITS BEHALF,  SERVICE OF ANY AND ALL LEGAL PROCESS,  SUMMONS,  NOTICES
AND  DOCUMENTS  WHICH MAY BE SERVED IN ANY SUCH  PROCEEDING  BROUGHT IN ANY SUCH
COURT WHICH MAY BE MADE ON SUCH AGENT.  IF FOR ANY REASON SUCH AGENT SHALL CEASE
TO BE  AVAILABLE  TO ACT AS SUCH,  EACH OF THE SELLER AND THE  COLLECTION  AGENT
AGREES TO DESIGNATE A NEW AGENT IN THE CITY OF NEW YORK ON THE TERMS AND FOR THE
PURPOSES OF THIS SECTION 12.11 SATISFACTORY TO THE PURCHASER.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be signed
by their duly authorized  officers as of the date set forth on the cover page of
this Agreement.

                           COYOTE FUNDING, L.L.C.,
                             as Seller

                           By:   /s/ Steve Blank
                              Name:  Steve Blank
                              Title: Vice President and Treasurer

                           Address: 6000 North Loop 1604 West
                           Attention: Treasurer
                           Telephone No.: (210) 592-2000
                           Facsimile No.: (210) 592-2010


                           DIAMOND SHAMROCK REFINING AND MARKETING COMPANY,
                             as Collection Agent

                           By:   /s/ Steve Blank
                              Name:  Steve Blank
                              Title: Vice President and Treasurer
                           
                           Address: 6000 North Loop 1604 West
                           Attention: Treasurer
                           Telephone No.: (210) 592-2000
                           Facsimile No.: (210) 592-2010

<PAGE>

                           ASSET SECURITIZATION COOPERATIVE CORPORATION,
                             as Conduit Purchaser

                           By:   /s/ Dean Kurdyla
                              Name:  Dean Kurdyla
                              Title: Controller

                           Address:  425 Lexington Avenue
                                     New York, New York 10017
                           Attention:  Asset Securitization Group
                           Facsimile:  (212) 856-3643


                           CANADIAN IMPERIAL BANK OF COMMERCE,
                             as Back-Stop Purchaser

                           By:   /s/ John Gevlin
                              Name:  John Gevlin
                              Title: Authorized Signatory

                           Address:  425 Lexington Avenue
                                     New York, New York 10017
                           Attention:  Asset Securitization Group
                           Facsimile:  (212) 856-3643


                           CANADIAN IMPERIAL BANK OF COMMERCE,
                             as Administrative Agent

                           By:   /s/ John Gevlin
                              Name:  John Gevlin
                              Title: Authorized Signatory

                           Address:  425 Lexington Avenue
                                     New York, New York 10017
                           Attention: Asset Securitization Group
                           Facsimile:  (212) 856-3643

<PAGE>

                                   SCHEDULE A
                                       TO
                      TRADE RECEIVABLES PURCHASE AGREEMENT
                                   dated as of
                                 March 29, 1999


                          Special Concentration Limits
                          ----------------------------

         Obligor Debt Ratings               Special Concentration Limit
         --------------------               ---------------------------

                                            Limited to the lesser of A and B:

Moody's              S&P                    (A)            (B)

Aa3 or higher        AA- or higher          $20,000,000    10.00% of Investment

> A3 and < A1        > A- and < A+          $15,000,000    7.50% of Investment
- -        -           -        -

> Baa1 and < Baa3    > BBB- and < BBB+      $8,000,000     4.00% of Investment
- -          -         -          -

In  determining  Concentration  Limits  based  upon  the  foregoing  chart,  the
following rules shall apply:

         1.       If an Obligor's  long-term unsecured private or public debt is
                  rated below Baa3 by Moody's or below BBB- by S&P, the Standard
                  Concentration Limit applies to that Obligor.

         2.       If an Obligor's  long-term unsecured private or public debt is
                  not rated by either Moody's or S&P, the Standard Concentration
                  Limit applies to that Obligor.

         3.       If an Obligor's long-term unsecured private or public  debt is
                  rated in one  of  the  ratings categories  specified  above by
                  Moody's and in a different ratings category specified above by
                  S&P, the  lower ratings  category applies  for determining the
                  Special  Concentration Limit (e.g., if  an Obligor  were rated
                  AA-  by S&P and  A1 by Moody's, the applicable Special Concen-
                  tration Limit would be  the lesser of $15,000,000 and 7.50% of
                  Investment).

         4.       If an Obligor's  long-term unsecured private or public debt is
                  rated by either  Moody's  or S&P but not by the  other  rating
                  agency,   then  the  Special   Concentration   Limit  will  be
                  determined by reference to the single  available rating (e.g.,
                  if an Obligor were  rated A2  by Moody's but not rated by S&P,
                  the applicable Special Concentration Limit would be the lesser
                  of $15,000,000 and 7.50% of Investment).

<TABLE> <S> <C>

<ARTICLE>                                      5
<MULTIPLIER>                                   1,000
       
<S>                                            <C>
<PERIOD-TYPE>                                        3-MOS
<FISCAL-YEAR-END>                              MAR-31-1999
<PERIOD-END>                                   DEC-31-1999
<CASH>                                             108,400
<SECURITIES>                                             0
<RECEIVABLES>                                      310,500
<ALLOWANCES>                                       (3,500)
<INVENTORY>                                        581,800
<CURRENT-ASSETS>                                 1,126,000
<PP&E>                                           4,463,700
<DEPRECIATION>                                 (1,208,400)
<TOTAL-ASSETS>                                   4,963,400
<CURRENT-LIABILITIES>                              963,800
<BONDS>                                          1,762,200
                              200,000
                                              0
<COMMON>                                               900
<OTHER-SE>                                       1,381,200
<TOTAL-LIABILITY-AND-EQUITY>                     4,963,400
<SALES>                                          2,725,700
<TOTAL-REVENUES>                                 2,725,700
<CGS>                                            1,547,200
<TOTAL-COSTS>                                    1,547,200
<OTHER-EXPENSES>                                 2,658,500
<LOSS-PROVISION>                                     1,700
<INTEREST-EXPENSE>                                  38,600
<INCOME-PRETAX>                                     31,300
<INCOME-TAX>                                        12,700
<INCOME-CONTINUING>                                 18,600
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                        16,000
<EPS-PRIMARY>                                         0.18
<EPS-DILUTED>                                         0.18
        

</TABLE>


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