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                               PURCHASE AGREEMENT

                                     Between

                          FAIR, ISAAC AND COMPANY, INC.

                                       And

                         LEASE PLAN NORTH AMERICA, INC.



                                  May 15, 1998


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                                TABLE OF CONTENTS

                                                                            Page

SECTION 1. INTERPRETATION......................................................1
1.01.      Definitions.........................................................1
1.02.      Rules of Construction...............................................2

SECTION 2. OPTIONAL PURCHASE BY LESSEE DURING THE TERM.........................2
2.01.      Term Purchase Option................................................2
2.02.      Partial Purchase Option.............................................3

SECTION 3. OBLIGATIONS OF LESSEE ON THE EXPIRATION DATE........................4
3.01.      Alternative.........................................................4
3.02.      Marketing Option....................................................4
3.03.      Expiration Date Purchase Option.....................................9

SECTION 4. TERMS OF ALL PURCHASES.............................................10
4.01.      Representations and Warranties of Parties..........................10
4.02.      "As Is" Purchase...................................................12
4.03.      Release............................................................12
4.04.      Permits, Approvals, Etc. ..........................................13
4.05.      Costs..............................................................13
4.06.      Lessee's Expiration Date and Partial Purchase Date
             Payment Obligations..............................................13
4.07.      Lessor Liens.......................................................14
4.08.      Transfer Documents.................................................14
4.09.      Casualty and Condemnation Proceeds.................................14
4.10.      Payments...........................................................15
4.11.      Environmental Reports..............................................15
4.12.      Further Assurances.................................................15

SECTION 5. MISCELLANEOUS......................................................15
5.01.      Notices............................................................15
5.02.      Waivers, Amendments................................................15
5.03.      Successors and Assigns.............................................15
5.04.      No Third Party Rights..............................................16
5.05.      Partial Invalidity.................................................16
5.06.      Governing Law......................................................16
5.07.      Counterparts.......................................................16

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                                TABLE OF CONTENTS
                                  (continued)

                                                                            Page

5.08.      Nature of Lessee's Obligations.....................................16

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                                TABLE OF CONTENTS


EXHIBITS

         A(1)     Notice of Term Purchase Option Exercise (2.02)
         A(2)     Notice of Partial Purchase Option Exercise (2.02)
         B        Notice of Marketing Option Exercise (3.01)
         C        Notice of Expiration Date Purchase Option Exercise (3.02)
         D        Deed (Lessor) (4.08(a))
         E        Bill of Sale (Lessor) (4.08(a))

                                       7-i-




                               PURCHASE AGREEMENT

         THIS PURCHASE AGREEMENT (this "Agreement" herein),  dated as of May 15,
1998, is entered into by and between:

                  (1) FAIR,  ISAAC AND  COMPANY,  INC.,  a Delaware  corporation
         ("Lessee"); and

                  (2) LEASE PLAN NORTH  AMERICA,  INC., an Illinois  corporation
         ("Lessor").


                                    RECITALS

         A. Lessee has requested Lessor and the financial institutions which are
"Participants" under the Participation  Agreement referred to in Recital B below
(such   financial   institutions   to  be  referred  to   collectively   as  the
"Participants") to provide to Lessee a lease facility pursuant to which:

                  (1) Lessor would (a) purchase certain  property  designated by
         Lessee,  (b) lease such  property  to  Lessee,  (c)  appoint  Lessee as
         Lessor's agent to make certain improvements to such property,  (d) make
         advances  to  finance  such  improvements  and to pay  certain  related
         expenses,  and (e) grant to Lessee the right to purchase such property;
         and

                  (2) The Participants  would participate in such lease facility
         by (a)  funding  the  purchase  price and other  advances to be made by
         Lessor,  and (b)  acquiring  participation  interests in the rental and
         certain other payments to be made by Lessee.

         B. Pursuant to a Participation  Agreement dated as of May 15, 1998 (the
"Participation  Agreement") among Lessee,  Lessor, the Participants and ABN AMRO
Bank N.V., as agent for the Participants (in such capacity, "Agent"), Lessor and
the  Participants  have agreed to provide such lease facility upon the terms and
subject to the conditions set forth therein,  including  without  limitation the
execution  and  delivery  of this  Agreement  setting  forth  the  terms for the
purchase of the Property by Lessee from Lessor.


                                    AGREEMENT

         NOW,  THEREFORE,  in consideration of the above Recitals and the mutual
covenants herein contained, the parties hereto hereby agree as follows:

SECTION 1. INTERPRETATION.

         1.01. Definitions.  Unless otherwise indicated in this Agreement or any
other  Operative  Document,  each  term  set  forth  in  Schedule  1.01  to  the
Participation  Agreement,  when used in

                                                                   EXHIBIT 10.40




this  Agreement  or any other  Operative  Document,  shall  have the  respective
meaning  given to that term in such  Schedule  1.01 or in the  provision of this
Agreement or other document, instrument or agreement referenced in such Schedule
1.01.

         1.02.  Rules  of  Construction.  Unless  otherwise  indicated  in  this
Agreement or any other Operative  Document,  the rules of construction set forth
in Schedule 1.02 to the  Participation  Agreement  shall apply to this Agreement
and the other Operative Documents.

SECTION 2. OPTIONAL PURCHASE BY LESSEE DURING THE TERM.

         2.01. Term Purchase Option. Subject to the terms and conditions of this
Agreement and the other Operative Documents  (including those set forth below in
this Paragraph 2.01), Lessee may, at its option on any Business Day prior to the
Scheduled Expiration Date of the Lease Agreement,  terminate the Lease Agreement
and purchase all of the Property (the "Term Purchase Option").

                  (a) Notice of Term  Purchase  Option  Exercise.  Lessee  shall
         notify  Lessor of  Lessee's  exercise  of the Term  Purchase  Option by
         delivering  to  Lessor  an  irrevocable  written  notice in the form of
         Exhibit  A(1),  appropriately  completed  (the "Notice of Term Purchase
         Option Exercise"),  which states that Lessee is exercising its right to
         terminate the Lease  Agreement  prior to the Scheduled  Expiration Date
         thereof  pursuant to Paragraph 4.01 of the Lease Agreement and purchase
         all of the Property  pursuant to this  Paragraph 2.01 and specifies the
         Business Day on which such termination and purchase are to occur (which
         date, after the delivery of such notice, shall be the Expiration Date).
         Lessee shall give the Notice of Term Purchase Option Exercise to Lessor
         at least ten (10) Business Days prior to the Business Day on which such
         termination  and  purchase  are to occur.  The Notice of Term  Purchase
         Option Exercise shall be delivered as required by Subparagraph  2.02(c)
         and Paragraph 7.01 of the Participation Agreement;  provided,  however,
         that Lessee shall  promptly  deliver the original of any Notice of Term
         Purchase Option Exercise initially delivered by facsimile.

                  (b) Term Purchase Option  Purchase Price.  Lessee shall pay to
         Lessor on the Expiration  Date, as the purchase price for the Property,
         an amount equal to the Outstanding Lease Amount on such date.

                  (c) Effect of Certain  Events.  Lessee may  exercise  the Term
         Purchase Option as provided in this Paragraph 2.01, notwithstanding (i)
         the prior  election by Lessee to exercise the Partial  Purchase  Option
         pursuant to Paragraph 2.02, the Marketing  Option pursuant to Paragraph
         3.01 and Paragraph 3.02 or the Expiration Date Purchase Option pursuant
         to Paragraph 3.01 and Paragraph  3.03,  provided that Lessor  completes
         the purchase of the Property  pursuant to the Term Purchase  Option and
         this Agreement  prior to the Scheduled  Expiration  Date and Lessor has
         not previously entered into an agreement with a Designated Purchaser or
         an Assignee  Purchaser to sell the Property or (ii) the  occurrence  of
         any Event of Default or the  exercise  by the Lessor  Parties of any of
         their rights or remedies  under the Operative  Documents  following the
         occurrence  of such Event of Default,  provided  that such  exercise by
         Lessee of the Term Purchase Option

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         after the  occurrence  of any Event of Default  shall not  require  the
         Lessor Parties to cease  exercising such rights and remedies unless and
         until Lessee  completes  the  purchase of the Property  pursuant to the
         Term Purchase Option and this Agreement.

         2.02.  Partial Purchase Option.  Subject to the terms and conditions of
this  Agreement and the other  Operative  Documents  (including  those set forth
below in this  Paragraph  2.02),  Lessee may from time to time, at its option on
any Business Day prior to the Scheduled  Expiration Date of the Lease Agreement,
without  terminating the Lease Agreement,  purchase one or more legal parcels of
property  included  in any Tract (a  "Sub-Tract  Parcel") of the  Property  (the
"Partial Purchase Option").

                  (a) Notice of Partial Purchase Option  Exercise.  Lessee shall
         notify Lessor of Lessee's  exercise of the Partial  Purchase  Option by
         delivering  to  Lessor  an  irrevocable  written  notice in the form of
         Exhibit A(2),  appropriately completed (the "Notice of Partial Purchase
         Option Exercise"),  which states that Lessee is exercising its right to
         purchase one or more  Sub-Tract  Parcels of the Property (but less than
         all of the Property) prior to the Scheduled Expiration Date pursuant to
         this  Paragraph  2.02  and  specifies  (i)  the  Sub-Tract(s)  so to be
         purchased  and (ii) the Business Day on which such purchase is to occur
         (a "Partial  Purchase Date").  Lessee shall give each Notice of Partial
         Purchase  Option  Exercise  to Lessor at least ten (10)  Business  Days
         prior to the  Partial  Purchase  Date on which a purchase  is to occur.
         Each Notice of Partial  Purchase  Option Exercise shall be delivered as
         required   by   Subparagraph   2.02(c)  and   Paragraph   7.01  of  the
         Participation Agreement;  provided, however, that Lessee shall promptly
         deliver the original of any Notice of Partial  Purchase Option Exercise
         initially delivered by facsimile.

                  (b) Partial  Purchase Option Purchase Price.  Lessee shall pay
         to Lessor on each Partial Purchase Date, as the purchase price for each
         Sub-Tract of Property to be purchased on such date,  an amount equal to
         the  purchase  price of such  Sub-Tract,  as set forth on Schedule 1 to
         Exhibit A(2) (the "Sub-Tract Purchase Price")

                  (c)  Conditions to Exercise of Partial  Purchase  Option.  The
         purchase by Lessee on any Partial  Purchase  Date of any  Sub-Tract  of
         Property  pursuant  to this  Paragraph  2.02 is  subject  to receipt by
         Lessor,  on or prior to such Partial  Purchase  Date, of new Expiration
         Date  Appraisals  for all Sub-Tracts and Tracts of Property that are to
         remain subject to the Lease Agreement after such Partial Purchase Date,
         which  appraisals  (i) each shall be dated a recent  date prior to such
         Partial Purchase Date and (ii) together shall assess the aggregate Fair
         Market Value of all such remaining Sub-Tracts and Tracts of Property at
         not less than the  Outstanding  Lease  Amount  that will  remain  after
         application  of all  amounts  to be  applied  thereto  on such  Partial
         Purchase Date.

                  (d)  Limitations to Exercise of Partial  Purchase Option as to
         the Tract 2 Land. Such other  limitations  with respect to the exercise
         of the Partial  Purchase  Option on the  Sub-Tracts  within the Tract 2
         Land as Lessor may reasonably  request prior to the Tract 2 Acquisition
         Date.

                  (e) Upon  delivery of any revised  Expiration  Date  Appraisal
         pursuant  to  Subparagraph  5.01(h)  of  the  Participation  Agreement,
         Schedule 1 to Exhibit  A-2 shall be

                                       3




         revised in accordance with such revised Expiration Date Appraisal.

SECTION 3. OBLIGATIONS OF LESSEE ON THE EXPIRATION DATE.

         3.01.  Alternative.  Unless  Lessee  has  exercised  the Term  Purchase
Option, on the Expiration Date of the Lease Agreement, Lessee shall either:

                  (a) Marketing  Option.  Cause  another  Person to complete the
         purchase of the  Property  pursuant to Paragraph  3.02 (the  "Marketing
         Option"); or

                  (b)  Expiration  Date Purchase  Option.  Purchase the Property
         itself  pursuant  to  Paragraph  3.03 (the  "Expiration  Date  Purchase
         Option").

Lessee shall elect either the Marketing  Option or the Expiration  Date Purchase
Option  by  delivering  to  Lessor,  not less than six (6)  months  prior to the
Scheduled  Expiration Date for the Lease Agreement,  either (i) a written notice
in the form of Exhibit B,  appropriately  completed  (the  "Notice of  Marketing
Option  Exercise"),  or  (ii)  a  written  notice  in the  form  of  Exhibit  C,
appropriately   completed  (the  "Notice  of  Expiration  Date  Purchase  Option
Exercise");  provided,  however, that (A) Lessee shall be deemed to have elected
the  Expiration  Date  Purchase  Option if it fails to deliver  either notice as
required by this sentence; (B) Lessee's election of the Expiration Date Purchase
Option (whether  expressly by a notice so delivered or implicitly by the failure
to deliver any notice)  shall be  irrevocable;  and (C) Lessee may not elect the
Marketing  Option if (1) the Expiration Date has been  accelerated to an earlier
Termination  Date following a Marketing  Option Event of Default under the Lease
Agreement or (2) the conditions set forth in Paragraph 3.03 of the Participation
Agreement are not satisfied on the date Lessee  delivers its election  notice or
on the Expiration  Date of the Lease Agreement  (unless,  in each case, the only
event  or  condition  causing  such  conditions  not to be so  satisfied  is the
occurrence  of  a  Non-Marketing   Option  Event  of  Default  under  the  Lease
Agreement).  The Notice of Marketing Option Exercise or the Notice of Expiration
Date Purchase  Option  Exercise  shall be delivered as required by  Subparagraph
2.02(c) and Paragraph 7.01 of the Participation  Agreement;  provided,  however,
that Lessee  shall  promptly  deliver to Lessor the  original of any such notice
initially delivered by facsimile.

         3.02. Marketing Option.

                  (a) General. If Lessee elects to exercise the Marketing Option
         by delivering to Lessor a Notice of Marketing Option Exercise  pursuant
         to Paragraph 3.01,  Lessee shall (i) locate a purchaser which satisfies
         the  requirements  set forth in this Paragraph  3.02,  (ii) arrange for
         such  purchaser to purchase the Property on the  Expiration  Date for a
         purchase  price which is not less than the lesser of (A) the sum of the
         total Tranche B  Proportionate  Share and total Tranche C Proportionate
         share of the Outstanding  Lease Amount and (B) the Fair Market Value of
         the Property, and (iii) otherwise comply, or cause compliance with, the
         requirements of this Paragraph 3.02 and the other applicable provisions
         of this Agreement.

                  (b) Lessee's Marketing Obligations.

                                       4




                           (i)  Initial  Marketing  Period.  During  the  period
                  beginning on the date Lessee  delivers the Notice of Marketing
                  Option  Exercise  and  ending  on the  date  which is four (4)
                  months  prior to the  Expiration  Date of the Lease  Agreement
                  (the "Initial Marketing Period"),  Lessee shall use reasonable
                  efforts to solicit  Conforming Bids from potential  purchasers
                  of the  Property.  On or prior to the last day of the  Initial
                  Marketing   Period,   Lessee  shall   deliver  to  Lessor  any
                  Conforming Bid selected by Lessee (the "Initial  Bid"). If the
                  purchase  price  specified  in the  Initial Bid is equal to or
                  greater  than the sum of the  total  Tranche  B  Proportionate
                  Share  and the  total  Tranche  C  Proportionate  Share of the
                  Outstanding  Lease  Amount,  Lessor  shall accept such bid and
                  Lessee shall have no further obligations to solicit additional
                  bids.

                           (ii) Secondary  Marketing  Period. If Lessee does not
                  submit an Initial Bid or if the  purchase  price  specified in
                  the  Initial  Bid is less than the sum of the total  Tranche B
                  Proportionate  Share  and the total  Tranche  C  Proportionate
                  Share of the Outstanding Lease Amount,  Lessor may reject such
                  bid and Lessee  shall,  during the period  which begins on the
                  day  following  the Initial  Marketing  Period and ends on the
                  date two (2) months prior to the Expiration  Date of the Lease
                  Agreement (the "Secondary Marketing Period"):

                                    (A)  Use  its  best   efforts   to   solicit
                           additional  Conforming Bids, including the engagement
                           of experienced and knowledgeable brokers;

                                    (B) Furnish to each Lessor  Party  copies of
                           all bids and otherwise provide each Lessor Party with
                           such  information  relating to the  marketing  of the
                           Property  as such  Person may  reasonably  request in
                           writing;

                                    (C)  Agree  to  provide  to  all   potential
                           purchasers   all   customary   seller's   indemnities
                           (including        environmental         indemnities),
                           representations and warranties regarding the Property
                           (including the title to, except for Lessor Liens, and
                           condition of the Property);

                                    (D) Furnish to each Lessor  Party  copies of
                           environmental  reports,   architect's   certificates,
                           licenses,   permits  and  other  evidence  reasonably
                           requested by such Person to establish that no Default
                           has  occurred  and  is  continuing  under  the  Lease
                           Agreement;

                                    (E)  Permit any  Lessor  Party or  potential
                           purchaser to inspect the Property and the maintenance
                           records  for  the  Property  upon  reasonable   prior
                           written  notice and during normal  business hours and
                           provide to each such Person all information regarding
                           the Property  reasonably  requested by such Person in
                           writing;

                                    (F) Take all other  commercially  reasonable
                           steps to secure the best price for the Property; and

                                       5




                                    (G) Submit to Lessor on or prior to the last
                           day of the Secondary  Marketing Period any Conforming
                           Bid selected by Lessee with a purchase price which is
                           equal to or greater than the sum of the total Tranche
                           B  Proportionate   Share  and  the  total  Tranche  C
                           Proportionate  Share of the Outstanding  Lease Amount
                           or, if no such Conforming Bid was received by Lessee,
                           the highest  Conforming Bid received by Lessee during
                           the Secondary Marketing Period.

                  During the Secondary  Marketing Period, any Lessor Party shall
                  have the right to submit one or more bids or solicit bids from
                  other Persons.

                  (c) Conforming  Bids. Each bid must meet each of the following
         requirements  (each such bid to be referred to herein as a  "Conforming
         Bid"):

                           (i) The bid may be submitted by any Person other than
                  (A) a Person  which is an  Affiliate of Lessee or (B) a Person
                  which has an  agreement  (whether  express  or  implied)  with
                  Lessee or any of its  Affiliates  to sell,  lease or otherwise
                  make  available to Lessee or any of its Affiliates any portion
                  of the Property;

                           (ii) The bidder must agree in writing to purchase the
                  Property on the Expiration  Date of the Lease  Agreement for a
                  purchase  price to be paid in cash  which is not less than the
                  lesser  of (A) the sum of the total  Tranche  B  Proportionate
                  Share and the Tranche C Proportionate Share of the Outstanding
                  Lease Amount on such date and (B) the Fair Market Value of the
                  Property on such date;

                           (iii) The bidder must agree to purchase  the Property
                  "as   is"   without   any   representations,   warranties   or
                  indemnities, except for (A) any representations, warranties or
                  indemnities   provided  by  Lessor  and  Lessee   pursuant  to
                  Subparagraph 4.01(b) and (B) any  representations,  warranties
                  or indemnities  provided by Lessee  pursuant to clause (ii)(C)
                  of Subparagraph 3.02(b); and

                           (iv) The  bidder  must agree to be bound by the other
                  terms and conditions of this Agreement applicable to bidders.

                  (d) Lessor's  Obligation to Accept Bids. If, at any time on or
         prior to the last day of the Secondary Marketing Period, Lessee submits
         to Lessor a Conforming  Bid under this  Paragraph  3.02 with a purchase
         price which is equal to or greater than the sum of the total  Tranche B
         Proportionate  Share  and the  Tranche  C  Proportionate  Share  of the
         Outstanding  Lease  Amount,  Lessor  shall  accept  such bid. If Lessee
         submits to Lessor a  Conforming  Bid under this  Paragraph  3.02 with a
         purchase  price  which is less  than  the sum of the  total  Tranche  B
         Proportionate  Share  and the  Tranche  C  Porportionate  Share  of the
         Outstanding  Lease  Amount,  Lessor  shall not  accept  such bid unless
         approved by Lessor and Required Participants. If Lessee fails to submit
         a bid to Lessor on or prior to the last day of the Secondary  Marketing
         Period which  Lessor is so required to accept,  Lessor shall retain the
         Property after the Expiration  Date of the Lease  Agreement;  provided,
         however,  that Lessee's  payment  obligations on such  Expiration  Date
         shall be

                                       6




         limited to the amounts payable pursuant to clause (iii) of Subparagraph
         4.06(a) if (i) Lessor  retains  the  Property  after  Lessee  submits a
         Conforming  Bid on or prior to the last day of the Secondary  Marketing
         Period in accordance with clause (ii) of Subparagraph  3.02(b) and (ii)
         the Marketing  Option has not terminated  prior to such Expiration Date
         pursuant  to  Subparagraph  3.02(f).  Lessor  shall  notify  Lessee  of
         Lessor's  election to retain the Property by delivering  to Lessee,  at
         least  ten  (10)  days  prior  to the  Expiration  Date  of  the  Lease
         Agreement, a written notice of such election.

                  (e) Purchase  Price.  If Lessor accepts any bid by any Person,
         such Person  (the  "Designated  Purchaser")  shall pay to Lessor on the
         Expiration Date of the Lease  Agreement,  as the purchase price for the
         Property, the amount set forth in such bid as the purchase price.

                  (f)  Termination  of the Marketing  Option.  Lessee's right to
         exercise the Marketing  Option shall  immediately  terminate and Lessee
         shall  purchase  the  Property  on the  Expiration  Date  of the  Lease
         Agreement pursuant to Paragraph 3.03 if (i) Lessee fails to comply with
         any of its  obligations  under this  Paragraph  3.02;  (ii) a Marketing
         Option Event of Default under the Lease  Agreement  occurs after Lessee
         delivers the Notice of Marketing Option Exercise;  (iii) the conditions
         precedent set forth in Paragraph  3.03 of the  Participation  Agreement
         are not satisfied on the Expiration Date of the Lease Agreement (unless
         the only  event  or  condition  causing  such  conditions  not to be so
         satisfied is the occurrence of a Non-Marketing  Option Event of Default
         under the Lease Agreement);  or (iv) the Designated  Purchaser fails to
         consummate the purchase of the Property on the  Expiration  Date of the
         Lease Agreement in accordance with its accepted bid and this Agreement,
         without  regard to the reason  for such  failure  (except as  otherwise
         provided in the following  proviso);  provided,  however,  that, if the
         Designated  Purchaser  fails to consummate the purchase of the Property
         on the Expiration Date solely due to Lessor's  failure to remove Lessor
         Liens or deliver the required deed and bill of sale or other  documents
         required  to be  delivered  by  Lessor  hereunder,  Lessee's  right  to
         exercise the Marketing Option shall not terminate,  Lessee shall not be
         required to purchase the Property on the  Expiration  Date and Lessee's
         payment  obligations  on the  Expiration  Date  shall be limited to the
         amounts set forth in clause (ii) of Subparagraph 4.06(a) (determined as
         if the purchase by the Designated Purchaser had been consummated).

                  (g)  Residual  Value  Guaranty  Amount and  Indemnity  Amount.
         Unless  Lessee's right to exercise the Marketing  Option has terminated
         and Lessee is required to purchase the Property on the Expiration  Date
         of the Lease Agreement  pursuant to Paragraph 3.03, Lessee shall pay to
         Lessor on such Expiration Date the following:

                           (i) An amount (the "Residual Value Guaranty  Amount")
                  equal  to the  total  Tranche  A  Proportionate  Share  of the
                  Outstanding Lease Amount on such date; and

                           (ii) An amount (the "Indemnity  Amount") equal to the
                  decrease,  if  any,  between  the  Commencement  Date  and the
                  Expiration  Date of the  Lease  Agreement  in the Fair  Market
                  Value of the  Property  caused  by (A) any  representation  or
                  warranty  of Lessee  or any of its  Affiliates  regarding  the
                  Property

                                       7




                  set  forth in any of the  Operative  Documents  proving  to be
                  false or  inaccurate  when made,  (B) the existence of, or the
                  failure of Lessee to pay any Governmental Charge, Indebtedness
                  or other obligation which might give rise to, any Liens in the
                  Property  (other  than  Permitted  Property  Liens),  (C)  the
                  failure  of Lessee to  complete  any New  Improvements  or any
                  Modifications  or (D) any  other  failure  of Lessee to comply
                  with any of its  obligations  regarding the Property set forth
                  in any of the Operative Documents;

         Provided,  however,  that (A) Lessee  shall not be obligated to pay any
         Residual  Value  Guaranty  Amount or  Indemnity  Amount if the purchase
         price paid to Lessor equals or exceeds the Outstanding  Lease Amount on
         such date and (B) the sum of any  Residual  Value  Guaranty  Amount and
         Indemnity  Amount payable to Lessor on the Expiration Date of the Lease
         Agreement  shall  not  exceed  the  deficiency,  if any,  between  such
         Outstanding Lease Amount and such purchase price.

                  (h)  Determination of Fair Market Value and Indemnity  Amount.
         If the purchase price specified in the Initial Bid is less than the sum
         of the total  Tranche  B  Proportionate  Share and the total  Tranche C
         Proportionate Share of the Outstanding Lease Amount,  Lessor may, on or
         prior to the last day of the Secondary  Marketing Period (if Lessee has
         not  previously  delivered to Lessor a  Conforming  Bid with a purchase
         price  equal  to or  greater  than  the  sum of  the  total  Tranche  B
         Proportionate  Share and the total Tranche C Proportionate Share of the
         Outstanding  Lease  Amount),  deliver  to  Lessee a  written  notice of
         Lessor's determination of the current Fair Market Value of the Property
         and the  Indemnity  Amount.  To determine  such  amounts,  Lessor shall
         obtain Appraisals of the Property which set forth:

                           (i) A current  Appraisal  of the Fair Market Value of
                  the  Property in its then  existing  condition  (the  "Current
                  Appraisal"); and

                           (ii) An  Appraisal  of the Fair  Market  Value of the
                  Property  which  assumes  that  (A)  all  representations  and
                  warranties regarding the Property made by Lessee or any of its
                  Affiliates  in any of the  Operative  Documents  were true and
                  correct when made;  (B) Lessee has  maintained the Property in
                  compliance with all applicable  Governmental Rules,  Insurance
                  Requirements  and the  Operative  Documents;  (C)  Lessee  has
                  completed all  Modifications and any other New Improvements in
                  a good and workmanlike manner and otherwise as required by the
                  Operative  Documents;  (D) Lessee has repaired the Property as
                  required by the  Operative  Documents  following any Casualty;
                  (E)  Lessee has  restored  the  Property  as  required  by the
                  Operative Documents following any Condemnation; (F) Lessee has
                  paid  all   Governmental   Charges,   Indebtedness  and  other
                  obligations which, if unpaid, might give rise to a Lien (other
                  than a Lessor  Lien) on the  Property;  (G) Lessee has removed
                  all Liens on the Property except for Permitted  Property Liens
                  and Lessor  Liens;  and (H) Lessee  has  performed  all of its
                  other obligations as required by the Operative  Documents (the
                  "Assumed Appraisal").

         In the  absence of manifest  error,  (A) the  Current  Appraisal  shall
         constitute  the current  Fair Market  Value of the Property and (B) the
         difference  between the  Current  Appraisal

                                       8




         and the Assumed  Appraisal shall constitute the Indemnity Amount if the
         Current Appraisal is less than the Assumed Appraisal.

                  (i) Lessee not an Agent.  Lessee shall not be an agent for any
         of the Lessor Parties in arranging for a purchaser of the Property.  No
         Lessor Party shall be bound by any acts of Lessee.

                  (j) Excess  Proceeds.  If, on the Expiration Date of the Lease
         Agreement,  after the application by Lessor of all amounts  received by
         Lessor on such date to the  Outstanding  Lease Amount,  all unpaid Rent
         accrued  through  or due and  payable  on or prior to such date and all
         other  amounts,  if any, due and payable by Lessee under the  Operative
         Documents on or prior to such date, any excess amount  remains,  Lessor
         promptly shall pay such excess amount to Lessee.

                  (k) Creditworthiness of Designated  Purchaser.  Lessee assumes
         all  responsibility  for  determining  the   creditworthiness   of  any
         potential purchaser on any bid submitted by Lessee to Lessor hereunder.
         If,  after  any  purchase  by a  Designated  Purchaser  hereunder,  the
         purchase price paid by such Designated  Purchaser is recovered from any
         Lessor  Party,  Lessee  shall  reimburse  such  Lessor  Party  for such
         recovery   unless   such   recovery   is  due   solely  to  a  material
         misrepresentation or covenant breach by such Lessor Party.

                  (l) Exercise of Marketing  Option After  Non-Marketing  Option
         Event of Default.  If Lessor  notifies  Lessee pursuant to Subparagraph
         5.03(a) or  Subparagraph  5.04(a) of the Lease Agreement that Lessor is
         terminating the Lease Agreement on a Termination Date which is prior to
         the Scheduled Expiration Date of the Lease Agreement and the only basis
         for such early termination is the occurrence of a Non-Marketing  Option
         Event of  Default,  Lessee may,  subject to  Paragraph  3.01,  elect to
         exercise the Marketing Option if, not later than five (5) Business Days
         after it receives from Lessor such notice of early termination,  it (i)
         delivers to Lessor a Notice of Marketing Option Exercise, (ii) delivers
         to Agent or Participants  Cash Collateral as required by clause (ii) of
         Subparagraph 2.11(a) of the Participation Agreement,  (iii) delivers to
         Lessor  an  opinion  of its  counsel  as  required  by  clause  (ii) of
         Subparagraph  2.11(a) of the  Participation  Agreement,  and (iv) takes
         such other actions as may be necessary to grant to Agent first priority
         perfected security interests in such Cash Collateral in accordance with
         the Cash Collateral Agreement. Upon the delivery by Lessee to Lessor of
         a Notice of  Marketing  Option  Exercise and  satisfaction  of the Cash
         Collateral  requirements  set forth in the  preceding  sentence of this
         Subparagraph 3.02(l), the Expiration Date of the Lease Agreement shall,
         if the conditions to the exercise of the Marketing  Option set forth in
         Paragraph  3.01 are  satisfied,  be extended to the first  Business Day
         that is six (6)  months  after  the date of  receipt  by Lessor of such
         Notice of  Marketing  Option  Exercise.  Any  exercise by Lessee of the
         Marketing Option pursuant to this Subparagraph 3.02(l) shall be subject
         to the terms and conditions otherwise set forth in this Agreement.

         3.03. Expiration Date Purchase Option.

                                       9




                  (a) General.  If (i) Lessee elects to exercise the  Expiration
         Date  Purchase  Option by  delivering  to Lessor a Notice of Expiration
         Date Purchase Option  Exercise  pursuant to Paragraph 3.01; (ii) Lessee
         elects to  exercise  the  Marketing  Option by  delivering  to Lessor a
         Notice of Marketing Option Exercise  pursuant to Paragraph 3.01 but the
         Marketing Option terminates pursuant to Subparagraph  3.02(f); or (iii)
         Lessee  fails to  deliver  to  Lessor  either  notice  as  required  by
         Paragraph  3.01;  Lessee shall  purchase the Property on the Expiration
         Date of the Lease Agreement and otherwise  comply,  or cause compliance
         with, the  requirements of this Paragraph 3.03 and the other applicable
         provisions of this Agreement.

                  (b)  Purchase  Price.  If Lessee is  purchasing  the  Property
         pursuant to the Expiration  Date Purchase  Option,  Lessee shall pay to
         Lessor on the Expiration Date of the Lease  Agreement,  as the purchase
         price for the Property, an amount equal to the Outstanding Lease Amount
         on such date.

SECTION 4. TERMS OF ALL PURCHASES.

         4.01. Representations and Warranties of Parties.

                  (a) Representations and Warranties of Purchaser. The purchaser
         of the Property,  whether Lessee, an Assignee Purchaser or a Designated
         Purchaser  ("Purchaser")  shall  represent and warrant to Lessor on the
         Expiration  Date of the Lease  Agreement (or, in the case of a purchase
         of a portion of the Property  pursuant to the Partial  Purchase Option,
         on the applicable Partial Purchase Date) as follows:

                           (i) Such  Person is a legal  entity  duly  organized,
                  validly  existing and in good  standing  under the laws of its
                  jurisdiction  of  organization  or an  individual  with  legal
                  capacity  to  purchase  the  Property  (or,  in the  case of a
                  purchase of a portion of the Property  pursuant to the Partial
                  Purchase Option, on the applicable Partial Purchase Date).

                           (ii) The execution,  delivery and performance by such
                  Person of each document, instrument and agreement executed, or
                  to be executed, by such Person in connection with its purchase
                  of the Property (or, in the case of a purchase of a portion of
                  the Property  pursuant to the Partial Purchase Option,  on the
                  applicable  Partial Purchase Date) (the "Purchase  Documents")
                  and the consummation of the transactions  contemplated thereby
                  (A) are within the power of such Person and (B) have been duly
                  authorized  by all  necessary  actions  on the  part  of  such
                  Person.

                           (iii)  Each  Purchase  Document  executed,  or  to be
                  executed,  by such Person has been,  or will be, duly executed
                  and  delivered  by  such  Person  and  constitutes,   or  will
                  constitute,  a legal,  valid and  binding  obligation  of such
                  Person, enforceable against such Person in accordance with its
                  terms,  except as limited by  bankruptcy,  insolvency or other
                  laws of  general  application  relating  to or  affecting  the
                  enforcement  of  creditors'   rights   generally  and  general
                  principles of equity.

                                       10




                           (iv)  Such   Person   has  not  (A)  made  a  general
                  assignment  for  the  benefit  of  creditors,  (B)  filed  any
                  voluntary petition in bankruptcy or suffered the filing of any
                  involuntary petition by such Person's creditors,  (C) suffered
                  the  appointment  of a receiver to take  possession of all, or
                  substantially  all, of such Person 's assets, (D) suffered the
                  attachment or other judicial  seizure of all, or substantially
                  all,  of such  Person's  assets,  (E)  admitted in writing its
                  inability  to pay its debts as they  come due,  or (F) made an
                  offer of settlement, extension or composition to its creditors
                  generally.

                           (v) Such Person is not a "party in  interest"  within
                  the meaning of Section 3(14) of the ERISA, with respect to any
                  investor in or beneficiary of Lessor.

                  (b)  Representations and Warranties of Lessor and Lessee. Each
         of Lessor and Lessee  shall  represent  and warrant to  Purchaser  (and
         Lessee  also  shall  represent  and  warrant  to Lessor if Lessor is to
         retain the Property) on the Expiration  Date of the Lease  Agreement as
         follows:

                           (i) Such  Person  is a  corporation  duly  organized,
                  validly  existing and in good  standing  under the laws of its
                  jurisdiction of organization.

                           (ii) The execution,  delivery and performance by such
                  Person of each Purchase Document executed,  or to be executed,
                  by  such  Person  and  the  consummation  of the  transactions
                  contemplated  thereby  (A) are within the power of such Person
                  and (B) have been duly authorized by all necessary  actions on
                  the part of such Person.

                           (iii)  Each  Purchase  Document  executed,  or  to be
                  executed,  by such Person has been,  or will be, duly executed
                  and  delivered  by  such  Person  and  constitutes,   or  will
                  constitute,  a legal,  valid and  binding  obligation  of such
                  Person, enforceable against such Person in accordance with its
                  terms,  except as limited by  bankruptcy,  insolvency or other
                  laws of  general  application  relating  to or  affecting  the
                  enforcement  of  creditors'   rights   generally  and  general
                  principles of equity.

                           (iv)  Such   Person   has  not  (A)  made  a  general
                  assignment  for  the  benefit  of  creditors,  (B)  filed  any
                  voluntary petition in bankruptcy or suffered the filing of any
                  involuntary petition by such Person's creditors,  (C) suffered
                  the  appointment  of a receiver to take  possession of all, or
                  substantially  all, of such Person's assets,  (D) suffered the
                  attachment or other judicial  seizure of all, or substantially
                  all,  of such  Person's  assets,  (E)  admitted in writing its
                  inability  to pay its debts as they  come due,  or (F) made an
                  offer of settlement, extension or composition to its creditors
                  generally.

         In addition to the foregoing, (A) Lessee shall represent and warrant to
         the  Designated  Purchaser  (or  Lessor  if  Lessor  is to  retain  the
         Property) on the Expiration  Date of the Lease  Agreement that no Liens
         are attached to the Property,  except for Permitted Property Liens, and
         (B) Lessor shall  represent and warrant to Purchaser on the  Expiration

                                       11




         Date of the Lease Agreement (or, in the case of a purchase of a portion
         of  the  Property  pursuant  to the  Partial  Purchase  Option,  on the
         applicable  Partial Purchase Date) that no Lessor Liens are attached to
         the  Property  (or,  in the  case of a  purchase  of a  portion  of the
         Property  pursuant to the Partial Purchase Option, on the portion to be
         purchased).  Except for the foregoing representations and warranties to
         be made by Lessor on the Expiration Date of the Lease Agreement (or, in
         the case of a purchase  of a portion of the  Property  pursuant  to the
         Partial Purchase Option,  on the applicable  Partial Purchase Date), no
         Lessor Party shall make any  representation  or warranty  regarding the
         Property or the sale of the Property. Lessee shall make such additional
         representations  and  warranties as it may be required to make pursuant
         to clause (ii) of Subparagraph 3.02(b).

                  (c)   Survival  of   Representations   and   Warranties.   The
         representations  and  warranties of Purchaser,  Lessor and Lessee shall
         survive for a period of twelve (12) months after the Expiration Date of
         the Lease  Agreement (or, in the case of a purchase of a portion of the
         Property  pursuant to the Partial  Purchase  Option,  on the applicable
         Partial  Purchase Date). Any claim which any such party may have at any
         time   against   any  other  such  party  for  a  breach  of  any  such
         representation  or  warranty,  whether  known or unknown,  which is not
         asserted by written  notice  within such twelve (12) month period shall
         not be valid or effective,  and the party shall have no liability  with
         respect thereto.

         4.02. "As Is" Purchase.  All purchases of the Property  hereunder shall
be "as is,  with all faults" and  without  any  representations,  warranties  or
indemnities except for any  representations,  warranties or indemnities provided
by Lessee  pursuant to clause  (ii)(C) of  Subparagraph  3.02(b) or by Lessor or
Lessee  pursuant  to   Subparagraph   4.01(b).   Purchaser  shall   specifically
acknowledge  and agree that Lessor is selling and  Purchaser is  purchasing  the
Property on an "as is, with all faults" basis and that  Purchaser is not relying
on any representations or warranties of any kind whatsoever, express or implied,
from any Lessor Party, its agents,  or brokers as to any matters  concerning the
Property  (except  for any  representations  and  warranties  provided by Lessor
pursuant to Subparagraph  4.01(b)),  including (a) the condition of the Property
(including any Improvements to the Property made prior to the Commencement  Date
or during the Term of the Lease Agreement); (b) title to the Property (including
possession  of the  Property by any Person or the  existence  of any Lien or any
other  right,  title or  interest  in or to any of the  Property in favor of any
Person); (c) the value, habitability,  useability,  design, operation or fitness
for use of the Property; (d) the availability or adequacy of utilities and other
services  to the  Property;  (e) any  latent,  hidden  or  patent  defect in the
Property;  (f) the zoning or status of the Property or any other restrictions on
the use of the Property;  (g) the economics of the Property; (h) any Casualty or
Condemnation;  or  (i)  the  compliance  of the  Property  with  any  applicable
Governmental Rule or Insurance Requirement.

         4.03.  Release.  Without  limiting the foregoing,  Purchaser  shall, on
behalf of itself  and its  successors  and  assigns,  waive its right to recover
from, and forever release and discharge,  Lessor and the other  Indemnitees from
any and all  demands,  claims,  legal  or  administrative  proceedings,  losses,
liabilities,  damages,  penalties,  fines, liens,  judgments,  costs or expenses
whatsoever  (including  attorneys' fees and costs),  whether direct or indirect,
known or unknown, foreseen or unforeseen, that may arise on account of or in any
way be connected with the physical condition of the Property or any Governmental
Rule  applicable  thereto,   including  any  Environment  Law.  Purchaser  shall
expressly waive the benefits of Section 1542 of the

                                       12




California  Civil Code,  which provides that, "a general release does not extend
to claims  which the  creditor  does not know or expect to exist in his favor at
the time of executing  the release,  which if known to him must have  materially
affected the settlement with the debtor."

         4.04.  Permits,  Approvals,  Etc.  Lessee  shall  obtain  all  permits,
licenses and approvals from and make all filings with  Governmental  Authorities
and other Persons,  comply and cause compliance with all applicable Governmental
Rules and take all other actions  required for the marketing,  purchase and sale
of the Property.

         4.05.  Costs.  Lessee shall pay directly,  without  deduction  from the
purchase  price or any other amount payable to Lessor  hereunder,  all costs and
expenses  of Lessee and Lessor  associated  with the  marketing  and sale of the
Property,  including  brokers' fees and commissions;  title insurance  premiums;
survey  charges;  utility,  tax and  other  prorations;  fees  and  expenses  of
environmental consultants and attorneys; appraisal costs; escrow fees; recording
fees;  documentary,  transfer  and other  taxes;  and all other fees,  costs and
expenses which might  otherwise be deducted from the purchase price or any other
amount payable to Lessor hereunder.

         4.06.  Lessee's  Expiration  Date and  Partial  Purchase  Date  Payment
Obligations.

                  (a)  Expiration  Date.  On the  Expiration  Date of the  Lease
         Agreement, Lessee shall pay to Lessor the following:

                           (i)  Purchase  by Lessee.  If the  Property  is to be
                  purchased by Lessee or an Assignee Purchaser on such date, (i)
                  the  purchase  price  payable by Lessee,  (ii) all unpaid Rent
                  accrued  through  or due and  payable on or prior to such date
                  and (iii) all other amounts, if any, due and payable by Lessee
                  under the Operative Documents on or prior to such date;

                           (ii)  Purchase  by a  Designated  Purchaser.  If  the
                  Property is to be purchased by a Designated  Purchaser on such
                  date, (i) the Residual Value Guaranty  Amount  (subject to the
                  provisos set forth at the end of Subparagraph  3.02(g)),  (ii)
                  the Indemnity Amount (subject to the provisos set forth at the
                  end of  Subparagraph  3.02(g)),  (iii) all unpaid Rent accrued
                  through  or due and  payable on or prior to such date and (iv)
                  all other amounts, if any, due and payable by Lessee under the
                  Operative Documents on or prior to such date; or

                           (iii)  Retention by Lessor.  If the Property is to be
                  retained  by  Lessor  on such date  pursuant  to  Subparagraph
                  3.02(d),  (i) the Residual  Value  Guaranty  Amount,  (ii) the
                  Indemnity Amount, (iii) all unpaid Rent accrued through or due
                  and  payable  on or  prior to such  date  and  (iv) all  other
                  amounts, if any, due and payable by Lessee under the Operative
                  Documents on or prior to such date.

                  (b)  Partial  Purchase  Date.  On any Partial  Purchase  Date,
         Lessee shall pay to Lessor (i) the purchase price for the  Sub-Tract(s)
         of  Property  to be  purchased  on such  date,  (ii)  all  unpaid  Rent
         attributable to such  Sub-Tract(s)  of Property  accrued through or due
         and  payable  on or prior to such  date and  (iii)  all  other  amounts
         attributable  to such  Sub-Tracts of Property , if any, due and payable
         by Lessee under the Operative Documents on or prior to such date.

                                       13




         4.07.  Lessor  Liens.  Lessor  shall  remove all Lessor  Liens from the
Property on or before the Expiration Date of the Lease Agreement.

         4.08. Transfer Documents.

                  (a) Expiration Date.

                           (i)  Lessor.  Subject  to  receipt  by  Lessor on the
                  Expiration  Date of the Lease  Agreement of the full amount of
                  the following,  without any setoff,  deduction or reduction of
                  any kind:

                                    (A) In the case of a  transfer  to Lessee or
                           an Assignee Purchaser,  all amounts payable by Lessee
                           pursuant to clause (i) of Subparagraph 4.06(a); or

                                    (B)  In  the  case  of  a   transfer   to  a
                           Designated Purchaser,  (A) the purchase price payable
                           by the  Designated  Purchaser  and  (B)  all  amounts
                           payable  by  Lessee   pursuant   to  clause  (ii)  of
                           Subparagraph 4.06(a);

                  Lessor  shall   transfer  its  interest  in  the  Property  to
                  Purchaser  on  the  Expiration  Date  of the  Lease  Agreement
                  (unless  Lessor is to retain the  Property) by  executing  and
                  delivering  to Purchaser a Deed in  substantially  the form of
                  Exhibit  D and a Bill  of Sale in  substantially  the  form of
                  Exhibit E.

                           (ii)  Lessee.  On the  Expiration  Date of the  Lease
                  Agreement,  unless Lessee is to purchase the Property,  Lessee
                  shall  transfer its interest in the Property to the Designated
                  Purchaser or the Assignee Purchaser (or Lessor if Lessor is to
                  retain the  Property)  by  executing  and  delivering  to such
                  Person a Deed in  substantially  the form of Exhibit F, a Bill
                  of Sale in substantially  the form of Exhibit G and such other
                  documents,  instruments  and  agreements  as such  Person  may
                  reasonably request.

                  (b) Partial Purchase Date. Subject to receipt by Lessor on any
         Partial  Purchase  Date of all  amounts  payable by Lessee  pursuant to
         Subparagraph 4.06(b), without any setoff, deduction or reduction of any
         kind,  Lessor shall  transfer its interest in the Tracts of Property to
         be  purchased  on such date to Lessee by executing  and  delivering  to
         Lessee a Deed in substantially the form of Exhibit D, a Bill of Sale in
         substantially   the  form  of  Exhibit  E  and  such  other  documents,
         instruments and agreements as Lessee may reasonably request

         4.09. Casualty and Condemnation Proceeds. If, on the Expiration Date of
the Lease Agreement,  any Casualty and Condemnation  Proceeds are held by Lessor
in a Repair and Restoration Account or otherwise,  Lessor shall (a) if Lessee is
to purchase  the  Property on the  Expiration  Date of the Lease  Agreement  and
Lessee shall so direct,  apply such proceeds to the purchase price to be paid by
Lessee or (b) in all other  cases,  release such  proceeds to Lessee;  provided,
however,  that Lessor shall not have any  obligation so to apply or release such
proceeds unless Lessee and/or any Designated  Purchaser has complied with all of
the terms and conditions of this Agreement.

                                       14




         4.10. Payments. Purchaser, Lessor and Lessee shall make all payments in
lawful money of the United States and in same day or immediately available funds
not later than 12:00 noon on the date due.

         4.11. Environmental Reports. Lessee shall obtain and deliver to Lessor,
not later than one (1) month prior to the Expiration Date of the Lease Agreement
(or,  in the case of a purchase  of a portion of the  Property  pursuant  to the
Partial Purchase Option,  prior to the applicable Partial Purchase Date), copies
of all reports or documents (not previously delivered to Lessor) that update the
Environmental  Reports  with  respect  to the  Property  (or,  in the  case of a
purchase of a portion of the Property  pursuant to the Partial  Purchase Option,
with  respect to the  applicable  portion  thereof)  prepared  by  environmental
consultants  acceptable  to  Lessor  and a  database  report  prepared  by  such
environmental  consultants with respect to the properties adjoining the Property
(or the applicable portion thereof).

         4.12. Further Assurances.  Lessee shall, and shall cause any Designated
Purchaser to, execute and deliver such documents, instruments and agreements and
take such other actions as Lessor may reasonably  request to effect the purposes
of this  Agreement  and comply with the terms  hereof.  Similarly,  Lessor shall
execute and deliver such  documents,  instruments  and  agreements and take such
other  actions as Lessee or a Designated  Purchaser  may  reasonably  request to
effect the purposes of this Agreement and comply with the terms hereof.

SECTION 5. MISCELLANEOUS.

         5.01.  Notices.  Except as  otherwise  specified  herein,  all notices,
requests,  demands,  consents,  instructions or other  communications to or upon
Lessee or Lessor under this Agreement shall be given as provided in Subparagraph
2.02(c) and Paragraph 7.01 of the Participation Agreement.

         5.02. Waivers,  Amendments. Any term, covenant,  agreement or condition
of this Agreement may be amended or waived only as provided in the Participation
Agreement.  No  failure  or delay by any Lessor  Party in  exercising  any right
hereunder  shall operate as a waiver thereof or of any other right nor shall any
single or partial exercise of any such right preclude any other further exercise
thereof or of any other right.  Unless otherwise specified in any such waiver or
consent,  a waiver or consent  given  hereunder  shall be effective  only in the
specific instance and for the specific purpose for which given.

         5.03. Successors and Assigns.

                  (a) General. This Agreement shall be binding upon and inure to
         the  benefit of the  Lessor  Parties  and  Lessee  and their  permitted
         successors and assigns; provided,  however, that the Lessor Parties and
         Lessee shall not sell,  assign or delegate their respective  rights and
         obligations hereunder except as provided in the Participation Agreement
         and in Subparagraph 5.03(b).

                  (b) Assignment by Lessee of Purchase Rights. Lessee may assign
         to a third party (an  "Assignee  Purchaser")  its right to purchase the
         Property  pursuant to the Term Purchase  Option,  the Partial  Purchase
         Option or the Expiration Date Purchase Option;

                                       15




         provided, however, that (i) such an assignment shall not relieve Lessee
         of its obligations to consummate or cause the  consummation of any such
         purchase in accordance with the terms of this Agreement and (ii) Lessee
         assumes all responsibility for determining the  creditworthiness of any
         such  Assignee  Purchaser.  If,  after  any  purchase  by  an  Assignee
         Purchaser hereunder, the purchase price paid by such Assignee Purchaser
         is recovered from any Lessor Party,  Lessee shall reimburse such Lessor
         Party  for such  recovery  unless  such  recovery  is due  solely  to a
         material misrepresentation or covenant breach by such Lessor Party.

         5.04. No Third Party Rights. Nothing expressed in or to be implied from
this  Agreement is intended to give, or shall be construed to give,  any Person,
other than the Lessor  Parties  and Lessee and their  permitted  successors  and
assigns,  any benefit or legal or equitable  right,  remedy or claim under or by
virtue of this Agreement or under or by virtue of any provision herein.

         5.05.  Partial  Invalidity.  If at  any  time  any  provision  of  this
Agreement is or becomes  illegal,  invalid or unenforceable in any respect under
the law or any jurisdiction, neither the legality, validity or enforceability of
the  remaining  provisions  of this  Agreement  nor the  legality,  validity  or
enforceability of such provision under the law of any other  jurisdiction  shall
in any way be affected or impaired thereby.

         5.06.  Governing Law. This Agreement shall be governed by and construed
in  accordance  with the laws of the State of  California  without  reference to
conflicts of law rules.

         5.07.  Counterparts.  This  Agreement  may be executed in any number of
identical counterparts,  any set of which signed by all the parties hereto shall
be deemed to constitute a complete, executed original for all purposes.

         5.08. Nature of Lessee's Obligations.

                  (a)  Independent  Obligation.  The obligation of Lessee to pay
         the  amounts  payable  by Lessee  under  this  Agreement  and the other
         Operative  Documents  and to perform the other  Lessee  Obligation  are
         absolute,  unconditional and irrevocable obligations which are separate
         and  independent  of the  obligations  of the Lessor Parties under this
         Agreement  and the other  Operative  Documents and all other events and
         circumstances,  including  the  events and  circumstances  set forth in
         Subparagraph 5.08(c).

                  (b) No Termination or Abatement.  This Agreement and the other
         Operative   Documents  and  Lessee's  obligation  to  pay  all  amounts
         hereunder  and to pay and perform all other  Lessee  Obligations  shall
         continue in full force and effect without abatement notwithstanding the
         occurrence  or existence of any event or  circumstance,  including  any
         event or circumstance set forth in Subparagraph 5.08(c).

                  (c)  Full  Payment  and  Performance.  Lessee  shall  make all
         payments under this Agreement and the other Operative  Documents in the
         full amounts and at the times  required by the terms of this  Agreement
         and  the  other  Operative  Documents  without  setoff,   deduction  or
         reduction of any kind and shall perform all other Lessee Obligations as
         and  when  required,  without  regard  to any  event  or  circumstances
         whatsoever,

                                       16




         including (i) the condition of the Property (including any Improvements
         to the Property made prior to the Commencement  Date or during the Term
         of  the  Lease  Agreement);  (ii)  title  to  the  Property  (including
         possession  of the Property by any Person or the  existence of any Lien
         or any other  right,  title or interest in or to any of the Property in
         favor  of any  Person);  (iii)  the  value,  habitability,  useability,
         design,  operation  or  fitness  for  use of  the  Property;  (iv)  the
         availability  or  adequacy  of  utilities  and  other  services  to the
         Property; (v) any latent, hidden or patent defect in the Property; (vi)
         the zoning or status of the Property or any other  restrictions  on the
         use of the  Property;  (g) the  economics  of the  Property;  (vii) any
         Casualty or  Condemnation;  (viii) the  compliance of the Property with
         any applicable  Governmental  Rule or Insurance  Requirement;  (ix) any
         failure by any Lessor  Party to perform  any of its  obligations  under
         this Agreement or any other Operative Document;  or (x) the exercise by
         any Lessor  Party of any of its  remedies  under this  Agreement or any
         other Operative Document;  provided,  however, that this Paragraph 5.08
         shall not abrogate  any right which Lessee may have to recover  damages
         from any Lessor Party for any  material  breach by such Lessor Party of
         its obligations under this Agreement or any other Operative Document to
         the extent permitted hereunder or thereunder.

                          [The signature page follows.]

                                       17




         IN WITNESS WHEREOF,  Lessee and Lessor have caused this Agreement to be
executed as of the day and year first above written.


LESSEE:                                    FAIR, ISAAC AND COMPANY, INC.,
                                           a Delaware corporation

                                           By:_________________________________
                                              Name:  Michael C. Gordon
                                              Title: Vice President--Facilities
                                                     Administration


LESSOR:                                    LEASE PLAN NORTH AMERICA, INC.,
                                           an Illinois corporation

                                           By:__________________________________
                                              Name:  Jamie Dillon
                                              Title: Attorney-in-Fact

                                       18




                                  EXHIBIT A(1)

                     NOTICE OF TERM PURCHASE OPTION EXERCISE

                                     [Date]

Lease Plan North America, Inc.
c/o ABN AMRO Bank N.V.
  as Agent
Capital Markets-Syndications Group
1325 Avenue of the Americas, 9th Floor
New York, NY  10019
Attn:  Linda Boardman

         1. Reference is made to the following:

                  (a) The Participation Agreement, dated as of May 15, 1998 (the
         "Participation  Agreement"),   among  Fair,  Isaac  and  Company,  Inc.
         ("Lessee"),  Lease Plan North America,  Inc. ("Lessor"),  the financial
         institutions  listed in Schedule I to the Participation  Agreement (the
         "Participants")  and ABN AMRO Bank N.V., as agent for the  Participants
         (in such capacity, "Agent");

                  (b) The Lease Agreement,  dated as of ____________,  1998 (the
         "Lease Agreement"), between Lessee and Lessor; and

                  (c) The Purchase  Agreement,  dated as of  ____________,  1998
         (the "Lease Agreement"), between Lessee and Lessor.

Unless otherwise  indicated,  all terms defined in the  Participation  Agreement
have the same respective meanings when used herein.

         2.  Pursuant  to  Subparagraph  4.01(a)  of  the  Lease  Agreement  and
Paragraph 2.01 of the Purchase  Agreement,  Lessee hereby  irrevocably  notifies
Lessor that Lessee is  exercising  its right to  terminate  the Lease  Agreement
prior to the Scheduled  Expiration  Date of the Lease Agreement and purchase the
Property on  [_________,  ____] (which date is a Scheduled Rent Payment Date and
which date,  after the delivery of this notice,  shall be the Expiration Date of
the Lease Agreement).

         IN WITNESS  WHEREOF,  Lessee has executed  this Notice of Term Purchase
Option Exercise on the date set forth above.


                                                FAIR, ISAAC AND COMPANY, INC.,
                                                a Delaware corporation

                                                By:_____________________________
                                                   Name:________________________
                                                   Title:_______________________

                                      A-1




                                  EXHIBIT A(2)

                   NOTICE OF PARTIAL PURCHASE OPTION EXERCISE

                                     [Date]

Lease Plan North America, Inc.
c/o ABN AMRO Bank N.V.
  as Agent
Capital Markets-Syndications Group
1325 Avenue of the Americas, 9th Floor
New York, NY  10019
Attn:  Linda Boardman

         1.       Reference is made to the following:

                  (a) The Participation Agreement, dated as of May 15, 1998 (the
         "Participation  Agreement"),   among  Fair,  Isaac  and  Company,  Inc.
         ("Lessee"),  Lease Plan North America,  Inc. ("Lessor"),  the financial
         institutions  listed in Schedule I to the Participation  Agreement (the
         "Participants")  and ABN AMRO Bank N.V., as agent for the  Participants
         (in such capacity, "Agent"); and

                  (b) The  Purchase  Agreement,  dated as of May __,  1998  (the
         "Purchase Agreement"), between Lessee and Lessor.

Unless otherwise  indicated,  all terms defined in the  Participation  Agreement
have the same respective meanings when used herein.

         2. Pursuant to Paragraph 2.02 of the Purchase Agreement,  Lessee hereby
irrevocably  notifies  Lessor that Lessee is exercising  its right to purchase a
portion of the Property as follows:

                  (a) The  Sub-Tract[s]  of  Property to be  purchased  is [are]
         ________________; and

                  (b) The date on which such purchase is to occur is [_________,
         ____] (which date is a Business Day).

         3. Lessee hereby certifies to Lessor,  Agent and the Participants that,
on the date of this notice:

                  (a) The  representations and warranties of Lessee set forth in
         Paragraph  4.01  of  the  Participation  Agreement  and  in  the  other
         Operative Documents are true and correct in all material respects as if
         made on such date (except for representations and warranties  expressly
         made as of a specified date, which shall be true as of such date);

                  (b) No Default has occurred and is continuing; and

                  (c)  All of the  Operative  Documents  are in full  force  and
         effect.

                                     A(2)-1




         IN WITNESS WHEREOF, Lessee has executed this Notice of Partial Purchase
Option Exercise on the date set forth above.


                                                FAIR, ISAAC AND COMPANY, INC.

                                                By:_____________________________
                                                   Name:________________________
                                                   Title:_______________________

                                     A(2)-2




                                   SCHEDULE 1

                                       TO

                                  EXHIBIT A(2)

                            SUB-TRACT PURCHASE PRICE


- -------------------------------------- -----------------------------------------
          Description of Parcel                      Purchase Price

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

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

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

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

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

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

                                     A(2)-3




                                    EXHIBIT B

                       NOTICE OF MARKETING OPTION EXERCISE

                                     [Date]

Lease Plan North America, Inc.
c/o ABN AMRO Bank N.V.
  as Agent
Capital Markets-Syndications Group
1325 Avenue of the Americas, 9th Floor
New York, NY  10019
Attn:  Linda Boardman

         1. Reference is made to the following:

                  (a) The Participation Agreement, dated as of May 15, 1998 (the
         "Participation  Agreement"),   among  Fair,  Isaac  and  Company,  Inc.
         ("Lessee"),  Lease Plan North America,  Inc. ("Lessor"),  the financial
         institutions  listed in Schedule I to the Participation  Agreement (the
         "Participants")  and ABN AMRO Bank N.V., as agent for the  Participants
         (in such capacity, "Agent"); and

                  (b) The Purchase  Agreement,  dated as of  ____________,  1998
         (the "Purchase Agreement"), between Lessee and Lessor.

Unless otherwise  indicated,  all terms defined in the  Participation  Agreement
have the same respective meanings when used herein.

         2. Pursuant to Paragraph 3.01 of the Purchase Agreement,  Lessee hereby
notifies Lessor that Lessee is electing to exercise the Marketing  Option on the
Scheduled Expiration Date of the Lease Agreement of [_____, ____].

         3. Lessee hereby certifies to Lessor,  Agent and the Participants that,
on the date of this notice:

                  (a) The  representations and warranties of Lessee set forth in
         Paragraph  4.01  of  the  Participation  Agreement  and  in  the  other
         Operative Documents are true and correct in all material respects as if
         made on such date (except for representations and warranties  expressly
         made as of a specified date, which shall be true as of such date);

                  (b) No Default  (other than a  Non-Marketing  Option  Event of
         Default under the Lease Agreement) has occurred and is continuing; and

                  (c)  All of the  Operative  Documents  are in full  force  and
         effect.

                                      B-1




         IN WITNESS WHEREOF, Lessee has executed this Notice of Marketing Option
Exercise on the date set forth above.


                                                FAIR, ISAAC AND COMPANY, INC.,
                                                a Delaware corporation

                                                By:_____________________________
                                                   Name:________________________
                                                   Title:_______________________

                                      B-2




                                    EXHIBIT C

               NOTICE OF EXPIRATION DATE PURCHASE OPTION EXERCISE

                                     [Date]

Lease Plan North America, Inc.
ABN AMRO Bank N.V.
  as Agent
Capital Markets-Syndications Group
1325 Avenue of the Americas, 9th Floor
New York, NY  10019
Attn:  Linda Boardman

         1. Reference is made to the following:

                  (a) The Participation Agreement, dated as of May 15, 1998 (the
         "Participation  Agreement"),   among  Fair,  Isaac  and  Company,  Inc.
         ("Lessee"),  Lease Plan North America,  Inc. ("Lessor"),  the financial
         institutions  listed in Schedule I to the Participation  Agreement (the
         "Participants")  and ABN AMRO Bank N.V., as agent for the  Participants
         (in such capacity, "Agent"); and

                  (b) The Purchase  Agreement,  dated as of  ____________,  1998
         (the "Purchase Agreement"), between Lessee and Lessor.

Unless otherwise  indicated,  all terms defined in the  Participation  Agreement
have the same respective meanings when used herein.

         2. Pursuant to Paragraph 3.01 of the Purchase Agreement,  Lessee hereby
notifies Lessor that Lessee is electing to exercise the Expiration Date Purchase
Option on the Scheduled Expiration Date of the Lease Agreement of [_____, ____].

         IN WITNESS WHEREOF,  Lessee has executed this Notice of Expiration Date
Purchase Option Exercise on the date set forth above.


                                                FAIR, ISAAC AND COMPANY, INC.,
                                                a Delaware corporation

                                                By:_____________________________
                                                   Name:________________________
                                                   Title:_______________________

                                      C-1




                                    EXHIBIT D

RECORDING REQUESTED BY
WHEN RECORDED RETURN TO
AND MAIL TAX STATEMENTS TO:

[Purchaser]

__________________
__________________
__________________

Documentary  Transfer  Tax is not of public  record  and is shown on a  separate
sheet attached to this deed.

________________________________________________________________________________


                                 QUITCLAIM DEED

                  FOR  VALUABLE  CONSIDERATION,  the  receipt of which is hereby
acknowledged, LEASE PLAN NORTH AMERICA, INC. , a [_________] ("Grantor"), hereby
releases,  remises  and  forever  quitclaims  to  [PURCHASER],  a  _____________
("Grantee"),  the real  property  located  in the City of  [_______],  County of
[_________],  State of  California,  described on Exhibit A attached  hereto and
made a  part  hereof  (the  "Property").  Grantor  is  selling  and  Grantee  is
purchasing the Property on an "as is, with all faults" basis and that Grantee is
not relying on any representations or warranties of any kind whatsoever, express
or implied,  from Grantor,  its agents, or brokers as to any matters  concerning
the  Property  including  (a)  the  condition  of the  Property  (including  any
improvements to the Property);  (b) title to the Property (including  possession
of the Property by any  individual or entity or the existence of any lien or any
other  right,  title or  interest  in or to any of the  Property in favor of any
person); (c) the value, habitability,  useability,  design, operation or fitness
for use of the Property; (d) the availability or adequacy of utilities and other
services  to the  Property;  (e) any  latent,  hidden  or  patent  defect in the
Property;  (f) the zoning or status of the Property or any other restrictions on
the use of the Property;  (g) the economics of the Property;  (h) any damage to,
destruction  or, or decrease in the value of all or any portion of the  Property
or any  condemnation  or  other  taking  or  sale of all or any  portion  of the
Property, by or on account of any actual or threatened eminent domain proceeding
or other taking of action by any governmental authority or other person have the
power  of  eminent  domain;  or (i) the  compliance  of the  Property  with  any
applicable law, rule,  regulation,  ordinance,  order, code, judgment or similar
form of decision  of any  governmental  authority  or any terms,  conditions  or
requirements imposed by any policies of insurance relating to the Property.


                                 [See Next Page]

                                      D-1




                  Executed as of _____, 19__.



                                            LEASE PLAN NORTH AMERICA, INC.,
                                            an Illinois corporation

                                            By:   ______________________________

                                            Its:  ______________________________

                                      D-2




                                    EXHIBIT A

                                LEGAL DESCRIPTION


Assessor's Parcel No.:  _______________



                                     D(A)-1




State of _____________
County of _____________________
On ___________________ before me, _________________________________________,
         Date                             Name, Title of Officer
personally appeared ___________________________________________________________,
                                         Name(s) of signer(s)

(personally known to me -OR- (proved to me on the basis of satisfactory

                                    evidence to be the  person(s)  whose name(s)
                                    is/are  subscribed to the within  instrument
                                    and  acknowledged  to  me  that  he/she/they
                                    executed    the   same   in    his/her/their
                                    authorized   capacity(ies),   and   that  by
                                    his/her/their signature(s) on the instrument
                                    the  person(s)  or the entity upon behalf of
                                    which  the  person(s)  acted,  executed  the
                                    instrument.

                                    WITNESS my hand and official seal.
                                    ____________________________________________






                          _____________________, 19__



Marin County Recorder

              Re:    Request That Statement of Documentary
                     Transfer Tax Not be Recorded         

Dear Sir:

         Request is hereby made in accordance  with Section 11932 of the Revenue
and  Taxation  Code  that this  statement  of tax due not be  recorded  with the
attached deed but be affixed to the deed after  recordation and before return as
directed on the deed.

         The attached  deed names LEASE PLAN NORTH  AMERICA,  INC.,  an Illinois
corporation, as grantor, and [PURCHASER], a _________________, as grantee.

         The property  being  transferred  and described in the attached deed is
located in the City of San Rafael and County of Marin, State of California.

         The amount of  Documentary  Transfer  Tax due on the  attached  deed is
$__________, computed on full value of the property conveyed.


                                            LEASE PLAN NORTH AMERICA, INC.,
                                            an Illinois corporation

                                            By:   ______________________________

                                            Its:  ______________________________






                                    EXHIBIT E

                                  BILL OF SALE

         FOR GOOD AND  VALUABLE  CONSIDERATION,  the  receipt of which is hereby
acknowledged, LEASE PLAN NORTH AMERICA, INC., an Illinois corporation ("Seller")
does    hereby    sell,    transfer    and    convey    to    [PURCHASER],     a
_________________________  ("Purchaser"),  the personal property owned by Seller
in connection with that certain real property commonly known as _______________,
_________,  California,  including,  without  limitation,  the personal property
itemized on Schedule 1 attached hereto and incorporated herein by this reference
(the "Property").

         Seller is selling and  Purchaser is  purchasing  the Property on an "as
is, with all faults" basis and  Purchaser is not relying on any  representations
or  warranties  of any kind  whatsoever,  express or implied,  from Seller,  its
agents, or brokers as to any matters  concerning the Property  including (a) the
condition of the Property;  (b) title to the Property  (including  possession of
the  Property by any  individual  or entity or the  existence of any lien or any
other  right,  title or  interest  in or to any of the  Property in favor of any
person); (c) the value, habitability,  useability,  design, operation or fitness
for use of the  Property;  or (d) any  latent,  hidden or  patent  defect in the
Property.

Dated: ________________, 19__               SELLER:

                                            LEASE PLAN NORTH AMERICA, INC.,
                                            an Illinois corporation

                                            By:   ______________________________

                                            Its:  ______________________________


                                            PURCHASER:

                                            [PURCHASER]
                                            a _____________________________

                                            By:   ______________________________

                                            Its:  ______________________________

                                      E-1




                                   Schedule 1

                                    Property

                                    EXHIBIT G

                                  BILL OF SALE

         For good and valuable  consideration,  the receipt and  sufficiency  of
which are  hereby  acknowledged,  Fair,  Isaac and  Company,  Inc.,  a  Delaware
corporation ("Seller"),  does hereby sell, transfer, and convey unto [PURCHASER]
("Buyer"), the personal property owned by Seller in connection with that certain
real property commonly known as  _______________,  ________,  California,  which
Seller warrants to be free and clear of all liens and  encumbrances,  including,
without limitation, the personal property itemized on Schedule 1 attached hereto
and incorporated herein by this reference.

         Seller does hereby  covenant with Buyer that Seller is the lawful owner
of such personal  property,  and that the undersigned has good right to sell the
same as aforesaid and will warrant and defend the title thereto unto Buyer,  its
successors  and  assigns,   against  the  claims  and  demands  of  all  persons
whomsoever.

         DATED this ____ day of __________, 19__.

                          Seller:          Fair, Isaac and Company, Inc.,
                                           a Delaware corporation

                                            By:   ______________________________

                                            Its:  ______________________________


                                   Schedule 1

                                    Property

                                     E(1)-1